diff options
Diffstat (limited to 'bfd/xcofflink.c')
| -rw-r--r-- | bfd/xcofflink.c | 6640 |
1 files changed, 0 insertions, 6640 deletions
diff --git a/bfd/xcofflink.c b/bfd/xcofflink.c deleted file mode 100644 index 9ec75bd01d8..00000000000 --- a/bfd/xcofflink.c +++ /dev/null @@ -1,6640 +0,0 @@ -/* POWER/PowerPC XCOFF linker support. - Copyright 1995, 1996, 1997, 1998, 1999 Free Software Foundation, Inc. - Written by Ian Lance Taylor <ian@cygnus.com>, Cygnus Support. - -This file is part of BFD, the Binary File Descriptor library. - -This program is free software; you can redistribute it and/or modify -it under the terms of the GNU General Public License as published by -the Free Software Foundation; either version 2 of the License, or -(at your option) any later version. - -This program is distributed in the hope that it will be useful, -but WITHOUT ANY WARRANTY; without even the implied warranty of -MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the -GNU General Public License for more details. - -You should have received a copy of the GNU General Public License -along with this program; if not, write to the Free Software -Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */ - -#include "bfd.h" -#include "sysdep.h" -#include "bfdlink.h" -#include "libbfd.h" -#include "coff/internal.h" -#include "libcoff.h" - -/* This file holds the XCOFF linker code. */ - -#define STRING_SIZE_SIZE (4) - -/* In order to support linking different object file formats into an - XCOFF format, we need to be able to determine whether a particular - bfd_target is an XCOFF vector. FIXME: We need to rethink this - whole approach. */ -#define XCOFF_XVECP(xv) \ - (strcmp ((xv)->name, "aixcoff-rs6000") == 0 \ - || strcmp ((xv)->name, "xcoff-powermac") == 0) - -/* Get the XCOFF hash table entries for a BFD. */ -#define obj_xcoff_sym_hashes(bfd) \ - ((struct xcoff_link_hash_entry **) obj_coff_sym_hashes (bfd)) - -/* XCOFF relocation types. These probably belong in a header file - somewhere. The relocations are described in the function - _bfd_ppc_xcoff_relocate_section in this file. */ - -#define R_POS (0x00) -#define R_NEG (0x01) -#define R_REL (0x02) -#define R_TOC (0x03) -#define R_RTB (0x04) -#define R_GL (0x05) -#define R_TCL (0x06) -#define R_BA (0x08) -#define R_BR (0x0a) -#define R_RL (0x0c) -#define R_RLA (0x0d) -#define R_REF (0x0f) -#define R_TRL (0x12) -#define R_TRLA (0x13) -#define R_RRTBI (0x14) -#define R_RRTBA (0x15) -#define R_CAI (0x16) -#define R_CREL (0x17) -#define R_RBA (0x18) -#define R_RBAC (0x19) -#define R_RBR (0x1a) -#define R_RBRC (0x1b) - -/* The first word of global linkage code. This must be modified by - filling in the correct TOC offset. */ - -#define XCOFF_GLINK_FIRST (0x81820000) /* lwz r12,0(r2) */ - -/* The remaining words of global linkage code. */ - -static unsigned long xcoff_glink_code[] = -{ - 0x90410014, /* stw r2,20(r1) */ - 0x800c0000, /* lwz r0,0(r12) */ - 0x804c0004, /* lwz r2,4(r12) */ - 0x7c0903a6, /* mtctr r0 */ - 0x4e800420, /* bctr */ - 0x0, /* start of traceback table */ - 0x000c8000, /* traceback table */ - 0x0 /* traceback table */ -}; - -#define XCOFF_GLINK_SIZE \ - (((sizeof xcoff_glink_code / sizeof xcoff_glink_code[0]) * 4) + 4) - -/* We reuse the SEC_ROM flag as a mark flag for garbage collection. - This flag will only be used on input sections. */ - -#define SEC_MARK (SEC_ROM) - -/* The ldhdr structure. This appears at the start of the .loader - section. */ - -struct internal_ldhdr -{ - /* The version number: currently always 1. */ - unsigned long l_version; - /* The number of symbol table entries. */ - bfd_size_type l_nsyms; - /* The number of relocation table entries. */ - bfd_size_type l_nreloc; - /* The length of the import file string table. */ - bfd_size_type l_istlen; - /* The number of import files. */ - bfd_size_type l_nimpid; - /* The offset from the start of the .loader section to the first - entry in the import file table. */ - bfd_size_type l_impoff; - /* The length of the string table. */ - bfd_size_type l_stlen; - /* The offset from the start of the .loader section to the first - entry in the string table. */ - bfd_size_type l_stoff; -}; - -struct external_ldhdr -{ - bfd_byte l_version[4]; - bfd_byte l_nsyms[4]; - bfd_byte l_nreloc[4]; - bfd_byte l_istlen[4]; - bfd_byte l_nimpid[4]; - bfd_byte l_impoff[4]; - bfd_byte l_stlen[4]; - bfd_byte l_stoff[4]; -}; - -#define LDHDRSZ (8 * 4) - -/* The ldsym structure. This is used to represent a symbol in the - .loader section. */ - -struct internal_ldsym -{ - union - { - /* The symbol name if <= SYMNMLEN characters. */ - char _l_name[SYMNMLEN]; - struct - { - /* Zero if the symbol name is more than SYMNMLEN characters. */ - long _l_zeroes; - /* The offset in the string table if the symbol name is more - than SYMNMLEN characters. */ - long _l_offset; - } _l_l; - } _l; - /* The symbol value. */ - bfd_vma l_value; - /* The symbol section number. */ - short l_scnum; - /* The symbol type and flags. */ - char l_smtype; - /* The symbol storage class. */ - char l_smclas; - /* The import file ID. */ - bfd_size_type l_ifile; - /* Offset to the parameter type check string. */ - bfd_size_type l_parm; -}; - -struct external_ldsym -{ - union - { - bfd_byte _l_name[SYMNMLEN]; - struct - { - bfd_byte _l_zeroes[4]; - bfd_byte _l_offset[4]; - } _l_l; - } _l; - bfd_byte l_value[4]; - bfd_byte l_scnum[2]; - bfd_byte l_smtype[1]; - bfd_byte l_smclas[1]; - bfd_byte l_ifile[4]; - bfd_byte l_parm[4]; -}; - -#define LDSYMSZ (8 + 3 * 4 + 2 + 2) - -/* These flags are for the l_smtype field (the lower three bits are an - XTY_* value). */ - -/* Imported symbol. */ -#define L_IMPORT (0x40) -/* Entry point. */ -#define L_ENTRY (0x20) -/* Exported symbol. */ -#define L_EXPORT (0x10) - -/* The ldrel structure. This is used to represent a reloc in the - .loader section. */ - -struct internal_ldrel -{ - /* The reloc address. */ - bfd_vma l_vaddr; - /* The symbol table index in the .loader section symbol table. */ - bfd_size_type l_symndx; - /* The relocation type and size. */ - short l_rtype; - /* The section number this relocation applies to. */ - short l_rsecnm; -}; - -struct external_ldrel -{ - bfd_byte l_vaddr[4]; - bfd_byte l_symndx[4]; - bfd_byte l_rtype[2]; - bfd_byte l_rsecnm[2]; -}; - -#define LDRELSZ (2 * 4 + 2 * 2) - -/* The list of import files. */ - -struct xcoff_import_file -{ - /* The next entry in the list. */ - struct xcoff_import_file *next; - /* The path. */ - const char *path; - /* The file name. */ - const char *file; - /* The member name. */ - const char *member; -}; - -/* An entry in the XCOFF linker hash table. */ - -struct xcoff_link_hash_entry -{ - struct bfd_link_hash_entry root; - - /* Symbol index in output file. Set to -1 initially. Set to -2 if - there is a reloc against this symbol. */ - long indx; - - /* If we have created a TOC entry for this symbol, this is the .tc - section which holds it. */ - asection *toc_section; - - union - { - /* If we have created a TOC entry (the XCOFF_SET_TOC flag is - set), this is the offset in toc_section. */ - bfd_vma toc_offset; - /* If the TOC entry comes from an input file, this is set to the - symbol index of the C_HIDEXT XMC_TC or XMC_TD symbol. */ - long toc_indx; - } u; - - /* If this symbol is a function entry point which is called, this - field holds a pointer to the function descriptor. If this symbol - is a function descriptor, this field holds a pointer to the - function entry point. */ - struct xcoff_link_hash_entry *descriptor; - - /* The .loader symbol table entry, if there is one. */ - struct internal_ldsym *ldsym; - - /* If XCOFF_BUILT_LDSYM is set, this is the .loader symbol table - index. If XCOFF_BUILD_LDSYM is clear, and XCOFF_IMPORT is set, - this is the l_ifile value. */ - long ldindx; - - /* Some linker flags. */ - unsigned short flags; - /* Symbol is referenced by a regular object. */ -#define XCOFF_REF_REGULAR (01) - /* Symbol is defined by a regular object. */ -#define XCOFF_DEF_REGULAR (02) - /* Symbol is defined by a dynamic object. */ -#define XCOFF_DEF_DYNAMIC (04) - /* Symbol is used in a reloc being copied into the .loader section. */ -#define XCOFF_LDREL (010) - /* Symbol is the entry point. */ -#define XCOFF_ENTRY (020) - /* Symbol is called; this is, it appears in a R_BR reloc. */ -#define XCOFF_CALLED (040) - /* Symbol needs the TOC entry filled in. */ -#define XCOFF_SET_TOC (0100) - /* Symbol is explicitly imported. */ -#define XCOFF_IMPORT (0200) - /* Symbol is explicitly exported. */ -#define XCOFF_EXPORT (0400) - /* Symbol has been processed by xcoff_build_ldsyms. */ -#define XCOFF_BUILT_LDSYM (01000) - /* Symbol is mentioned by a section which was not garbage collected. */ -#define XCOFF_MARK (02000) - /* Symbol size is recorded in size_list list from hash table. */ -#define XCOFF_HAS_SIZE (04000) - /* Symbol is a function descriptor. */ -#define XCOFF_DESCRIPTOR (010000) - /* Multiple definitions have been for the symbol. */ -#define XCOFF_MULTIPLY_DEFINED (020000) - - /* The storage mapping class. */ - unsigned char smclas; -}; - -/* The XCOFF linker hash table. */ - -struct xcoff_link_hash_table -{ - struct bfd_link_hash_table root; - - /* The .debug string hash table. We need to compute this while - reading the input files, so that we know how large the .debug - section will be before we assign section positions. */ - struct bfd_strtab_hash *debug_strtab; - - /* The .debug section we will use for the final output. */ - asection *debug_section; - - /* The .loader section we will use for the final output. */ - asection *loader_section; - - /* A count of non TOC relative relocs which will need to be - allocated in the .loader section. */ - size_t ldrel_count; - - /* The .loader section header. */ - struct internal_ldhdr ldhdr; - - /* The .gl section we use to hold global linkage code. */ - asection *linkage_section; - - /* The .tc section we use to hold toc entries we build for global - linkage code. */ - asection *toc_section; - - /* The .ds section we use to hold function descriptors which we - create for exported symbols. */ - asection *descriptor_section; - - /* The list of import files. */ - struct xcoff_import_file *imports; - - /* Required alignment of sections within the output file. */ - unsigned long file_align; - - /* Whether the .text section must be read-only. */ - boolean textro; - - /* Whether garbage collection was done. */ - boolean gc; - - /* A linked list of symbols for which we have size information. */ - struct xcoff_link_size_list - { - struct xcoff_link_size_list *next; - struct xcoff_link_hash_entry *h; - bfd_size_type size; - } *size_list; - - /* Magic sections: _text, _etext, _data, _edata, _end, end. */ - asection *special_sections[6]; -}; - -/* Information we keep for each section in the output file during the - final link phase. */ - -struct xcoff_link_section_info -{ - /* The relocs to be output. */ - struct internal_reloc *relocs; - /* For each reloc against a global symbol whose index was not known - when the reloc was handled, the global hash table entry. */ - struct xcoff_link_hash_entry **rel_hashes; - /* If there is a TOC relative reloc against a global symbol, and the - index of the TOC symbol is not known when the reloc was handled, - an entry is added to this linked list. This is not an array, - like rel_hashes, because this case is quite uncommon. */ - struct xcoff_toc_rel_hash - { - struct xcoff_toc_rel_hash *next; - struct xcoff_link_hash_entry *h; - struct internal_reloc *rel; - } *toc_rel_hashes; -}; - -/* Information that we pass around while doing the final link step. */ - -struct xcoff_final_link_info -{ - /* General link information. */ - struct bfd_link_info *info; - /* Output BFD. */ - bfd *output_bfd; - /* Hash table for long symbol names. */ - struct bfd_strtab_hash *strtab; - /* Array of information kept for each output section, indexed by the - target_index field. */ - struct xcoff_link_section_info *section_info; - /* Symbol index of last C_FILE symbol (-1 if none). */ - long last_file_index; - /* Contents of last C_FILE symbol. */ - struct internal_syment last_file; - /* Symbol index of TOC symbol. */ - long toc_symindx; - /* Start of .loader symbols. */ - struct external_ldsym *ldsym; - /* Next .loader reloc to swap out. */ - struct external_ldrel *ldrel; - /* File position of start of line numbers. */ - file_ptr line_filepos; - /* Buffer large enough to hold swapped symbols of any input file. */ - struct internal_syment *internal_syms; - /* Buffer large enough to hold output indices of symbols of any - input file. */ - long *sym_indices; - /* Buffer large enough to hold output symbols for any input file. */ - bfd_byte *outsyms; - /* Buffer large enough to hold external line numbers for any input - section. */ - bfd_byte *linenos; - /* Buffer large enough to hold any input section. */ - bfd_byte *contents; - /* Buffer large enough to hold external relocs of any input section. */ - bfd_byte *external_relocs; -}; - -static void xcoff_swap_ldhdr_in - PARAMS ((bfd *, const struct external_ldhdr *, struct internal_ldhdr *)); -static void xcoff_swap_ldhdr_out - PARAMS ((bfd *, const struct internal_ldhdr *, struct external_ldhdr *)); -static void xcoff_swap_ldsym_in - PARAMS ((bfd *, const struct external_ldsym *, struct internal_ldsym *)); -static void xcoff_swap_ldsym_out - PARAMS ((bfd *, const struct internal_ldsym *, struct external_ldsym *)); -static void xcoff_swap_ldrel_in - PARAMS ((bfd *, const struct external_ldrel *, struct internal_ldrel *)); -static void xcoff_swap_ldrel_out - PARAMS ((bfd *, const struct internal_ldrel *, struct external_ldrel *)); -static struct bfd_hash_entry *xcoff_link_hash_newfunc - PARAMS ((struct bfd_hash_entry *, struct bfd_hash_table *, const char *)); -static boolean xcoff_get_section_contents PARAMS ((bfd *, asection *)); -static struct internal_reloc *xcoff_read_internal_relocs - PARAMS ((bfd *, asection *, boolean, bfd_byte *, boolean, - struct internal_reloc *)); -static boolean xcoff_link_add_object_symbols - PARAMS ((bfd *, struct bfd_link_info *)); -static boolean xcoff_link_check_archive_element - PARAMS ((bfd *, struct bfd_link_info *, boolean *)); -static boolean xcoff_link_check_ar_symbols - PARAMS ((bfd *, struct bfd_link_info *, boolean *)); -static boolean xcoff_link_check_dynamic_ar_symbols - PARAMS ((bfd *, struct bfd_link_info *, boolean *)); -static bfd_size_type xcoff_find_reloc - PARAMS ((struct internal_reloc *, bfd_size_type, bfd_vma)); -static boolean xcoff_link_add_symbols PARAMS ((bfd *, struct bfd_link_info *)); -static boolean xcoff_link_add_dynamic_symbols - PARAMS ((bfd *, struct bfd_link_info *)); -static boolean xcoff_mark_symbol - PARAMS ((struct bfd_link_info *, struct xcoff_link_hash_entry *)); -static boolean xcoff_mark PARAMS ((struct bfd_link_info *, asection *)); -static void xcoff_sweep PARAMS ((struct bfd_link_info *)); -static boolean xcoff_build_ldsyms - PARAMS ((struct xcoff_link_hash_entry *, PTR)); -static boolean xcoff_link_input_bfd - PARAMS ((struct xcoff_final_link_info *, bfd *)); -static boolean xcoff_write_global_symbol - PARAMS ((struct xcoff_link_hash_entry *, PTR)); -static boolean xcoff_reloc_link_order - PARAMS ((bfd *, struct xcoff_final_link_info *, asection *, - struct bfd_link_order *)); -static int xcoff_sort_relocs PARAMS ((const PTR, const PTR)); - -/* Routines to swap information in the XCOFF .loader section. If we - ever need to write an XCOFF loader, this stuff will need to be - moved to another file shared by the linker (which XCOFF calls the - ``binder'') and the loader. */ - -/* Swap in the ldhdr structure. */ - -static void -xcoff_swap_ldhdr_in (abfd, src, dst) - bfd *abfd; - const struct external_ldhdr *src; - struct internal_ldhdr *dst; -{ - dst->l_version = bfd_get_32 (abfd, src->l_version); - dst->l_nsyms = bfd_get_32 (abfd, src->l_nsyms); - dst->l_nreloc = bfd_get_32 (abfd, src->l_nreloc); - dst->l_istlen = bfd_get_32 (abfd, src->l_istlen); - dst->l_nimpid = bfd_get_32 (abfd, src->l_nimpid); - dst->l_impoff = bfd_get_32 (abfd, src->l_impoff); - dst->l_stlen = bfd_get_32 (abfd, src->l_stlen); - dst->l_stoff = bfd_get_32 (abfd, src->l_stoff); -} - -/* Swap out the ldhdr structure. */ - -static void -xcoff_swap_ldhdr_out (abfd, src, dst) - bfd *abfd; - const struct internal_ldhdr *src; - struct external_ldhdr *dst; -{ - bfd_put_32 (abfd, src->l_version, dst->l_version); - bfd_put_32 (abfd, src->l_nsyms, dst->l_nsyms); - bfd_put_32 (abfd, src->l_nreloc, dst->l_nreloc); - bfd_put_32 (abfd, src->l_istlen, dst->l_istlen); - bfd_put_32 (abfd, src->l_nimpid, dst->l_nimpid); - bfd_put_32 (abfd, src->l_impoff, dst->l_impoff); - bfd_put_32 (abfd, src->l_stlen, dst->l_stlen); - bfd_put_32 (abfd, src->l_stoff, dst->l_stoff); -} - -/* Swap in the ldsym structure. */ - -static void -xcoff_swap_ldsym_in (abfd, src, dst) - bfd *abfd; - const struct external_ldsym *src; - struct internal_ldsym *dst; -{ - if (bfd_get_32 (abfd, src->_l._l_l._l_zeroes) != 0) - memcpy (dst->_l._l_name, src->_l._l_name, SYMNMLEN); - else - { - dst->_l._l_l._l_zeroes = 0; - dst->_l._l_l._l_offset = bfd_get_32 (abfd, src->_l._l_l._l_offset); - } - dst->l_value = bfd_get_32 (abfd, src->l_value); - dst->l_scnum = bfd_get_16 (abfd, src->l_scnum); - dst->l_smtype = bfd_get_8 (abfd, src->l_smtype); - dst->l_smclas = bfd_get_8 (abfd, src->l_smclas); - dst->l_ifile = bfd_get_32 (abfd, src->l_ifile); - dst->l_parm = bfd_get_32 (abfd, src->l_parm); -} - -/* Swap out the ldsym structure. */ - -static void -xcoff_swap_ldsym_out (abfd, src, dst) - bfd *abfd; - const struct internal_ldsym *src; - struct external_ldsym *dst; -{ - if (src->_l._l_l._l_zeroes != 0) - memcpy (dst->_l._l_name, src->_l._l_name, SYMNMLEN); - else - { - bfd_put_32 (abfd, 0, dst->_l._l_l._l_zeroes); - bfd_put_32 (abfd, src->_l._l_l._l_offset, dst->_l._l_l._l_offset); - } - bfd_put_32 (abfd, src->l_value, dst->l_value); - bfd_put_16 (abfd, src->l_scnum, dst->l_scnum); - bfd_put_8 (abfd, src->l_smtype, dst->l_smtype); - bfd_put_8 (abfd, src->l_smclas, dst->l_smclas); - bfd_put_32 (abfd, src->l_ifile, dst->l_ifile); - bfd_put_32 (abfd, src->l_parm, dst->l_parm); -} - -/* Swap in the ldrel structure. */ - -static void -xcoff_swap_ldrel_in (abfd, src, dst) - bfd *abfd; - const struct external_ldrel *src; - struct internal_ldrel *dst; -{ - dst->l_vaddr = bfd_get_32 (abfd, src->l_vaddr); - dst->l_symndx = bfd_get_32 (abfd, src->l_symndx); - dst->l_rtype = bfd_get_16 (abfd, src->l_rtype); - dst->l_rsecnm = bfd_get_16 (abfd, src->l_rsecnm); -} - -/* Swap out the ldrel structure. */ - -static void -xcoff_swap_ldrel_out (abfd, src, dst) - bfd *abfd; - const struct internal_ldrel *src; - struct external_ldrel *dst; -{ - bfd_put_32 (abfd, src->l_vaddr, dst->l_vaddr); - bfd_put_32 (abfd, src->l_symndx, dst->l_symndx); - bfd_put_16 (abfd, src->l_rtype, dst->l_rtype); - bfd_put_16 (abfd, src->l_rsecnm, dst->l_rsecnm); -} - -/* Routines to read XCOFF dynamic information. This don't really - belong here, but we already have the ldsym manipulation routines - here. */ - -/* Read the contents of a section. */ - -static boolean -xcoff_get_section_contents (abfd, sec) - bfd *abfd; - asection *sec; -{ - if (coff_section_data (abfd, sec) == NULL) - { - sec->used_by_bfd = bfd_zalloc (abfd, - sizeof (struct coff_section_tdata)); - if (sec->used_by_bfd == NULL) - return false; - } - - if (coff_section_data (abfd, sec)->contents == NULL) - { - coff_section_data (abfd, sec)->contents = - (bfd_byte *) bfd_malloc (sec->_raw_size); - if (coff_section_data (abfd, sec)->contents == NULL) - return false; - - if (! bfd_get_section_contents (abfd, sec, - coff_section_data (abfd, sec)->contents, - (file_ptr) 0, sec->_raw_size)) - return false; - } - - return true; -} - -/* Get the size required to hold the dynamic symbols. */ - -long -_bfd_xcoff_get_dynamic_symtab_upper_bound (abfd) - bfd *abfd; -{ - asection *lsec; - bfd_byte *contents; - struct internal_ldhdr ldhdr; - - if ((abfd->flags & DYNAMIC) == 0) - { - bfd_set_error (bfd_error_invalid_operation); - return -1; - } - - lsec = bfd_get_section_by_name (abfd, ".loader"); - if (lsec == NULL) - { - bfd_set_error (bfd_error_no_symbols); - return -1; - } - - if (! xcoff_get_section_contents (abfd, lsec)) - return -1; - contents = coff_section_data (abfd, lsec)->contents; - - xcoff_swap_ldhdr_in (abfd, (struct external_ldhdr *) contents, &ldhdr); - - return (ldhdr.l_nsyms + 1) * sizeof (asymbol *); -} - -/* Get the dynamic symbols. */ - -long -_bfd_xcoff_canonicalize_dynamic_symtab (abfd, psyms) - bfd *abfd; - asymbol **psyms; -{ - asection *lsec; - bfd_byte *contents; - struct internal_ldhdr ldhdr; - const char *strings; - struct external_ldsym *elsym, *elsymend; - coff_symbol_type *symbuf; - - if ((abfd->flags & DYNAMIC) == 0) - { - bfd_set_error (bfd_error_invalid_operation); - return -1; - } - - lsec = bfd_get_section_by_name (abfd, ".loader"); - if (lsec == NULL) - { - bfd_set_error (bfd_error_no_symbols); - return -1; - } - - if (! xcoff_get_section_contents (abfd, lsec)) - return -1; - contents = coff_section_data (abfd, lsec)->contents; - - coff_section_data (abfd, lsec)->keep_contents = true; - - xcoff_swap_ldhdr_in (abfd, (struct external_ldhdr *) contents, &ldhdr); - - strings = (char *) contents + ldhdr.l_stoff; - - symbuf = ((coff_symbol_type *) - bfd_zalloc (abfd, ldhdr.l_nsyms * sizeof (coff_symbol_type))); - if (symbuf == NULL) - return -1; - - elsym = (struct external_ldsym *) (contents + LDHDRSZ); - elsymend = elsym + ldhdr.l_nsyms; - for (; elsym < elsymend; elsym++, symbuf++, psyms++) - { - struct internal_ldsym ldsym; - - xcoff_swap_ldsym_in (abfd, elsym, &ldsym); - - symbuf->symbol.the_bfd = abfd; - - if (ldsym._l._l_l._l_zeroes == 0) - symbuf->symbol.name = strings + ldsym._l._l_l._l_offset; - else - { - int i; - - for (i = 0; i < SYMNMLEN; i++) - if (ldsym._l._l_name[i] == '\0') - break; - if (i < SYMNMLEN) - symbuf->symbol.name = (char *) elsym->_l._l_name; - else - { - char *c; - - c = bfd_alloc (abfd, SYMNMLEN + 1); - if (c == NULL) - return -1; - memcpy (c, ldsym._l._l_name, SYMNMLEN); - c[SYMNMLEN] = '\0'; - symbuf->symbol.name = c; - } - } - - if (ldsym.l_smclas == XMC_XO) - symbuf->symbol.section = bfd_abs_section_ptr; - else - symbuf->symbol.section = coff_section_from_bfd_index (abfd, - ldsym.l_scnum); - symbuf->symbol.value = ldsym.l_value - symbuf->symbol.section->vma; - - symbuf->symbol.flags = BSF_NO_FLAGS; - if ((ldsym.l_smtype & L_EXPORT) != 0) - symbuf->symbol.flags |= BSF_GLOBAL; - - /* FIXME: We have no way to record the other information stored - with the loader symbol. */ - - *psyms = (asymbol *) symbuf; - } - - *psyms = NULL; - - return ldhdr.l_nsyms; -} - -/* Get the size required to hold the dynamic relocs. */ - -long -_bfd_xcoff_get_dynamic_reloc_upper_bound (abfd) - bfd *abfd; -{ - asection *lsec; - bfd_byte *contents; - struct internal_ldhdr ldhdr; - - if ((abfd->flags & DYNAMIC) == 0) - { - bfd_set_error (bfd_error_invalid_operation); - return -1; - } - - lsec = bfd_get_section_by_name (abfd, ".loader"); - if (lsec == NULL) - { - bfd_set_error (bfd_error_no_symbols); - return -1; - } - - if (! xcoff_get_section_contents (abfd, lsec)) - return -1; - contents = coff_section_data (abfd, lsec)->contents; - - xcoff_swap_ldhdr_in (abfd, (struct external_ldhdr *) contents, &ldhdr); - - return (ldhdr.l_nreloc + 1) * sizeof (arelent *); -} - -/* The typical dynamic reloc. */ - -static reloc_howto_type xcoff_dynamic_reloc = - HOWTO (0, /* type */ - 0, /* rightshift */ - 2, /* size (0 = byte, 1 = short, 2 = long) */ - 32, /* bitsize */ - false, /* pc_relative */ - 0, /* bitpos */ - complain_overflow_bitfield, /* complain_on_overflow */ - 0, /* special_function */ - "R_POS", /* name */ - true, /* partial_inplace */ - 0xffffffff, /* src_mask */ - 0xffffffff, /* dst_mask */ - false); /* pcrel_offset */ - -/* Get the dynamic relocs. */ - -long -_bfd_xcoff_canonicalize_dynamic_reloc (abfd, prelocs, syms) - bfd *abfd; - arelent **prelocs; - asymbol **syms; -{ - asection *lsec; - bfd_byte *contents; - struct internal_ldhdr ldhdr; - arelent *relbuf; - struct external_ldrel *elrel, *elrelend; - - if ((abfd->flags & DYNAMIC) == 0) - { - bfd_set_error (bfd_error_invalid_operation); - return -1; - } - - lsec = bfd_get_section_by_name (abfd, ".loader"); - if (lsec == NULL) - { - bfd_set_error (bfd_error_no_symbols); - return -1; - } - - if (! xcoff_get_section_contents (abfd, lsec)) - return -1; - contents = coff_section_data (abfd, lsec)->contents; - - xcoff_swap_ldhdr_in (abfd, (struct external_ldhdr *) contents, &ldhdr); - - relbuf = (arelent *) bfd_alloc (abfd, ldhdr.l_nreloc * sizeof (arelent)); - if (relbuf == NULL) - return -1; - - elrel = ((struct external_ldrel *) - (contents + LDHDRSZ + ldhdr.l_nsyms * LDSYMSZ)); - elrelend = elrel + ldhdr.l_nreloc; - for (; elrel < elrelend; elrel++, relbuf++, prelocs++) - { - struct internal_ldrel ldrel; - - xcoff_swap_ldrel_in (abfd, elrel, &ldrel); - - if (ldrel.l_symndx >= 3) - relbuf->sym_ptr_ptr = syms + (ldrel.l_symndx - 3); - else - { - const char *name; - asection *sec; - - switch (ldrel.l_symndx) - { - case 0: - name = ".text"; - break; - case 1: - name = ".data"; - break; - case 2: - name = ".bss"; - break; - default: - abort (); - break; - } - - sec = bfd_get_section_by_name (abfd, name); - if (sec == NULL) - { - bfd_set_error (bfd_error_bad_value); - return -1; - } - - relbuf->sym_ptr_ptr = sec->symbol_ptr_ptr; - } - - relbuf->address = ldrel.l_vaddr; - relbuf->addend = 0; - - /* Most dynamic relocs have the same type. FIXME: This is only - correct if ldrel.l_rtype == 0. In other cases, we should use - a different howto. */ - relbuf->howto = &xcoff_dynamic_reloc; - - /* FIXME: We have no way to record the l_rsecnm field. */ - - *prelocs = relbuf; - } - - *prelocs = NULL; - - return ldhdr.l_nreloc; -} - -/* Routine to create an entry in an XCOFF link hash table. */ - -static struct bfd_hash_entry * -xcoff_link_hash_newfunc (entry, table, string) - struct bfd_hash_entry *entry; - struct bfd_hash_table *table; - const char *string; -{ - struct xcoff_link_hash_entry *ret = (struct xcoff_link_hash_entry *) entry; - - /* Allocate the structure if it has not already been allocated by a - subclass. */ - if (ret == (struct xcoff_link_hash_entry *) NULL) - ret = ((struct xcoff_link_hash_entry *) - bfd_hash_allocate (table, sizeof (struct xcoff_link_hash_entry))); - if (ret == (struct xcoff_link_hash_entry *) NULL) - return (struct bfd_hash_entry *) ret; - - /* Call the allocation method of the superclass. */ - ret = ((struct xcoff_link_hash_entry *) - _bfd_link_hash_newfunc ((struct bfd_hash_entry *) ret, - table, string)); - if (ret != NULL) - { - /* Set local fields. */ - ret->indx = -1; - ret->toc_section = NULL; - ret->u.toc_indx = -1; - ret->descriptor = NULL; - ret->ldsym = NULL; - ret->ldindx = -1; - ret->flags = 0; - ret->smclas = XMC_UA; - } - - return (struct bfd_hash_entry *) ret; -} - -/* Create a XCOFF link hash table. */ - -struct bfd_link_hash_table * -_bfd_xcoff_bfd_link_hash_table_create (abfd) - bfd *abfd; -{ - struct xcoff_link_hash_table *ret; - - ret = ((struct xcoff_link_hash_table *) - bfd_alloc (abfd, sizeof (struct xcoff_link_hash_table))); - if (ret == (struct xcoff_link_hash_table *) NULL) - return (struct bfd_link_hash_table *) NULL; - if (! _bfd_link_hash_table_init (&ret->root, abfd, xcoff_link_hash_newfunc)) - { - bfd_release (abfd, ret); - return (struct bfd_link_hash_table *) NULL; - } - - ret->debug_strtab = _bfd_xcoff_stringtab_init (); - ret->debug_section = NULL; - ret->loader_section = NULL; - ret->ldrel_count = 0; - memset (&ret->ldhdr, 0, sizeof (struct internal_ldhdr)); - ret->linkage_section = NULL; - ret->toc_section = NULL; - ret->descriptor_section = NULL; - ret->imports = NULL; - ret->file_align = 0; - ret->textro = false; - ret->gc = false; - memset (ret->special_sections, 0, sizeof ret->special_sections); - - /* The linker will always generate a full a.out header. We need to - record that fact now, before the sizeof_headers routine could be - called. */ - xcoff_data (abfd)->full_aouthdr = true; - - return &ret->root; -} - -/* Look up an entry in an XCOFF link hash table. */ - -#define xcoff_link_hash_lookup(table, string, create, copy, follow) \ - ((struct xcoff_link_hash_entry *) \ - bfd_link_hash_lookup (&(table)->root, (string), (create), (copy),\ - (follow))) - -/* Traverse an XCOFF link hash table. */ - -#define xcoff_link_hash_traverse(table, func, info) \ - (bfd_link_hash_traverse \ - (&(table)->root, \ - (boolean (*) PARAMS ((struct bfd_link_hash_entry *, PTR))) (func), \ - (info))) - -/* Get the XCOFF link hash table from the info structure. This is - just a cast. */ - -#define xcoff_hash_table(p) ((struct xcoff_link_hash_table *) ((p)->hash)) - -/* Read internal relocs for an XCOFF csect. This is a wrapper around - _bfd_coff_read_internal_relocs which tries to take advantage of any - relocs which may have been cached for the enclosing section. */ - -static struct internal_reloc * -xcoff_read_internal_relocs (abfd, sec, cache, external_relocs, - require_internal, internal_relocs) - bfd *abfd; - asection *sec; - boolean cache; - bfd_byte *external_relocs; - boolean require_internal; - struct internal_reloc *internal_relocs; -{ - if (coff_section_data (abfd, sec) != NULL - && coff_section_data (abfd, sec)->relocs == NULL - && xcoff_section_data (abfd, sec) != NULL) - { - asection *enclosing; - - enclosing = xcoff_section_data (abfd, sec)->enclosing; - - if (enclosing != NULL - && (coff_section_data (abfd, enclosing) == NULL - || coff_section_data (abfd, enclosing)->relocs == NULL) - && cache - && enclosing->reloc_count > 0) - { - if (_bfd_coff_read_internal_relocs (abfd, enclosing, true, - external_relocs, false, - (struct internal_reloc *) NULL) - == NULL) - return NULL; - } - - if (enclosing != NULL - && coff_section_data (abfd, enclosing) != NULL - && coff_section_data (abfd, enclosing)->relocs != NULL) - { - size_t off; - - off = ((sec->rel_filepos - enclosing->rel_filepos) - / bfd_coff_relsz (abfd)); - if (! require_internal) - return coff_section_data (abfd, enclosing)->relocs + off; - memcpy (internal_relocs, - coff_section_data (abfd, enclosing)->relocs + off, - sec->reloc_count * sizeof (struct internal_reloc)); - return internal_relocs; - } - } - - return _bfd_coff_read_internal_relocs (abfd, sec, cache, external_relocs, - require_internal, internal_relocs); -} - -/* Given an XCOFF BFD, add symbols to the global hash table as - appropriate. */ - -boolean -_bfd_xcoff_bfd_link_add_symbols (abfd, info) - bfd *abfd; - struct bfd_link_info *info; -{ - switch (bfd_get_format (abfd)) - { - case bfd_object: - return xcoff_link_add_object_symbols (abfd, info); - - case bfd_archive: - /* If the archive has a map, do the usual search. We then need - to check the archive for stripped dynamic objects, because - they will not appear in the archive map even though they - should, perhaps, be included. If the archive has no map, we - just consider each object file in turn, since that apparently - is what the AIX native linker does. */ - if (bfd_has_map (abfd)) - { - if (! (_bfd_generic_link_add_archive_symbols - (abfd, info, xcoff_link_check_archive_element))) - return false; - } - - { - bfd *member; - - member = bfd_openr_next_archived_file (abfd, (bfd *) NULL); - while (member != NULL) - { - if (bfd_check_format (member, bfd_object) - && (! bfd_has_map (abfd) - || ((member->flags & DYNAMIC) != 0 - && (member->flags & HAS_SYMS) == 0))) - { - boolean needed; - - if (! xcoff_link_check_archive_element (member, info, &needed)) - return false; - if (needed) - member->archive_pass = -1; - } - member = bfd_openr_next_archived_file (abfd, member); - } - } - - return true; - - default: - bfd_set_error (bfd_error_wrong_format); - return false; - } -} - -/* Add symbols from an XCOFF object file. */ - -static boolean -xcoff_link_add_object_symbols (abfd, info) - bfd *abfd; - struct bfd_link_info *info; -{ - if (! _bfd_coff_get_external_symbols (abfd)) - return false; - if (! xcoff_link_add_symbols (abfd, info)) - return false; - if (! info->keep_memory) - { - if (! _bfd_coff_free_symbols (abfd)) - return false; - } - return true; -} - -/* Check a single archive element to see if we need to include it in - the link. *PNEEDED is set according to whether this element is - needed in the link or not. This is called via - _bfd_generic_link_add_archive_symbols. */ - -static boolean -xcoff_link_check_archive_element (abfd, info, pneeded) - bfd *abfd; - struct bfd_link_info *info; - boolean *pneeded; -{ - if (! _bfd_coff_get_external_symbols (abfd)) - return false; - - if (! xcoff_link_check_ar_symbols (abfd, info, pneeded)) - return false; - - if (*pneeded) - { - if (! xcoff_link_add_symbols (abfd, info)) - return false; - } - - if (! info->keep_memory || ! *pneeded) - { - if (! _bfd_coff_free_symbols (abfd)) - return false; - } - - return true; -} - -/* Look through the symbols to see if this object file should be - included in the link. */ - -static boolean -xcoff_link_check_ar_symbols (abfd, info, pneeded) - bfd *abfd; - struct bfd_link_info *info; - boolean *pneeded; -{ - bfd_size_type symesz; - bfd_byte *esym; - bfd_byte *esym_end; - - *pneeded = false; - - if ((abfd->flags & DYNAMIC) != 0 - && ! info->static_link - && info->hash->creator == abfd->xvec) - return xcoff_link_check_dynamic_ar_symbols (abfd, info, pneeded); - - symesz = bfd_coff_symesz (abfd); - esym = (bfd_byte *) obj_coff_external_syms (abfd); - esym_end = esym + obj_raw_syment_count (abfd) * symesz; - while (esym < esym_end) - { - struct internal_syment sym; - - bfd_coff_swap_sym_in (abfd, (PTR) esym, (PTR) &sym); - - if (sym.n_sclass == C_EXT && sym.n_scnum != N_UNDEF) - { - const char *name; - char buf[SYMNMLEN + 1]; - struct bfd_link_hash_entry *h; - - /* This symbol is externally visible, and is defined by this - object file. */ - - name = _bfd_coff_internal_syment_name (abfd, &sym, buf); - if (name == NULL) - return false; - h = bfd_link_hash_lookup (info->hash, name, false, false, true); - - /* We are only interested in symbols that are currently - undefined. If a symbol is currently known to be common, - XCOFF linkers do not bring in an object file which - defines it. We also don't bring in symbols to satisfy - undefined references in shared objects. */ - if (h != (struct bfd_link_hash_entry *) NULL - && h->type == bfd_link_hash_undefined - && (info->hash->creator != abfd->xvec - || (((struct xcoff_link_hash_entry *) h)->flags - & XCOFF_DEF_DYNAMIC) == 0)) - { - if (! (*info->callbacks->add_archive_element) (info, abfd, name)) - return false; - *pneeded = true; - return true; - } - } - - esym += (sym.n_numaux + 1) * symesz; - } - - /* We do not need this object file. */ - return true; -} - -/* Look through the loader symbols to see if this dynamic object - should be included in the link. The native linker uses the loader - symbols, not the normal symbol table, so we do too. */ - -static boolean -xcoff_link_check_dynamic_ar_symbols (abfd, info, pneeded) - bfd *abfd; - struct bfd_link_info *info; - boolean *pneeded; -{ - asection *lsec; - bfd_byte *buf; - struct internal_ldhdr ldhdr; - const char *strings; - struct external_ldsym *elsym, *elsymend; - - *pneeded = false; - - lsec = bfd_get_section_by_name (abfd, ".loader"); - if (lsec == NULL) - { - /* There are no symbols, so don't try to include it. */ - return true; - } - - if (! xcoff_get_section_contents (abfd, lsec)) - return false; - buf = coff_section_data (abfd, lsec)->contents; - - xcoff_swap_ldhdr_in (abfd, (struct external_ldhdr *) buf, &ldhdr); - - strings = (char *) buf + ldhdr.l_stoff; - - elsym = (struct external_ldsym *) (buf + LDHDRSZ); - elsymend = elsym + ldhdr.l_nsyms; - for (; elsym < elsymend; elsym++) - { - struct internal_ldsym ldsym; - char nambuf[SYMNMLEN + 1]; - const char *name; - struct bfd_link_hash_entry *h; - - xcoff_swap_ldsym_in (abfd, elsym, &ldsym); - - /* We are only interested in exported symbols. */ - if ((ldsym.l_smtype & L_EXPORT) == 0) - continue; - - if (ldsym._l._l_l._l_zeroes == 0) - name = strings + ldsym._l._l_l._l_offset; - else - { - memcpy (nambuf, ldsym._l._l_name, SYMNMLEN); - nambuf[SYMNMLEN] = '\0'; - name = nambuf; - } - - h = bfd_link_hash_lookup (info->hash, name, false, false, true); - - /* We are only interested in symbols that are currently - undefined. At this point we know that we are using an XCOFF - hash table. */ - if (h != NULL - && h->type == bfd_link_hash_undefined - && (((struct xcoff_link_hash_entry *) h)->flags - & XCOFF_DEF_DYNAMIC) == 0) - { - if (! (*info->callbacks->add_archive_element) (info, abfd, name)) - return false; - *pneeded = true; - return true; - } - } - - /* We do not need this shared object. */ - - if (buf != NULL && ! coff_section_data (abfd, lsec)->keep_contents) - { - free (coff_section_data (abfd, lsec)->contents); - coff_section_data (abfd, lsec)->contents = NULL; - } - - return true; -} - -/* Returns the index of reloc in RELOCS with the least address greater - than or equal to ADDRESS. The relocs are sorted by address. */ - -static bfd_size_type -xcoff_find_reloc (relocs, count, address) - struct internal_reloc *relocs; - bfd_size_type count; - bfd_vma address; -{ - bfd_size_type min, max, this; - - if (count < 2) - { - if (count == 1 && relocs[0].r_vaddr < address) - return 1; - else - return 0; - } - - min = 0; - max = count; - - /* Do a binary search over (min,max]. */ - while (min + 1 < max) - { - bfd_vma raddr; - - this = (max + min) / 2; - raddr = relocs[this].r_vaddr; - if (raddr > address) - max = this; - else if (raddr < address) - min = this; - else - { - min = this; - break; - } - } - - if (relocs[min].r_vaddr < address) - return min + 1; - - while (min > 0 - && relocs[min - 1].r_vaddr == address) - --min; - - return min; -} - -/* Add all the symbols from an object file to the hash table. - - XCOFF is a weird format. A normal XCOFF .o files will have three - COFF sections--.text, .data, and .bss--but each COFF section will - contain many csects. These csects are described in the symbol - table. From the linker's point of view, each csect must be - considered a section in its own right. For example, a TOC entry is - handled as a small XMC_TC csect. The linker must be able to merge - different TOC entries together, which means that it must be able to - extract the XMC_TC csects from the .data section of the input .o - file. - - From the point of view of our linker, this is, of course, a hideous - nightmare. We cope by actually creating sections for each csect, - and discarding the original sections. We then have to handle the - relocation entries carefully, since the only way to tell which - csect they belong to is to examine the address. */ - -static boolean -xcoff_link_add_symbols (abfd, info) - bfd *abfd; - struct bfd_link_info *info; -{ - unsigned int n_tmask; - unsigned int n_btshft; - boolean default_copy; - bfd_size_type symcount; - struct xcoff_link_hash_entry **sym_hash; - asection **csect_cache; - bfd_size_type linesz; - asection *o; - asection *last_real; - boolean keep_syms; - asection *csect; - unsigned int csect_index; - asection *first_csect; - bfd_size_type symesz; - bfd_byte *esym; - bfd_byte *esym_end; - struct reloc_info_struct - { - struct internal_reloc *relocs; - asection **csects; - bfd_byte *linenos; - } *reloc_info = NULL; - - keep_syms = obj_coff_keep_syms (abfd); - - if ((abfd->flags & DYNAMIC) != 0 - && ! info->static_link) - { - if (! xcoff_link_add_dynamic_symbols (abfd, info)) - return false; - } - - if (info->hash->creator == abfd->xvec) - { - /* We need to build a .loader section, so we do it here. This - won't work if we're producing an XCOFF output file with no - XCOFF input files. FIXME. */ - if (xcoff_hash_table (info)->loader_section == NULL) - { - asection *lsec; - - lsec = bfd_make_section_anyway (abfd, ".loader"); - if (lsec == NULL) - goto error_return; - xcoff_hash_table (info)->loader_section = lsec; - lsec->flags |= SEC_HAS_CONTENTS | SEC_IN_MEMORY; - } - /* Likewise for the linkage section. */ - if (xcoff_hash_table (info)->linkage_section == NULL) - { - asection *lsec; - - lsec = bfd_make_section_anyway (abfd, ".gl"); - if (lsec == NULL) - goto error_return; - xcoff_hash_table (info)->linkage_section = lsec; - lsec->flags |= (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS - | SEC_IN_MEMORY); - lsec->alignment_power = 2; - } - /* Likewise for the TOC section. */ - if (xcoff_hash_table (info)->toc_section == NULL) - { - asection *tsec; - - tsec = bfd_make_section_anyway (abfd, ".tc"); - if (tsec == NULL) - goto error_return; - xcoff_hash_table (info)->toc_section = tsec; - tsec->flags |= (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS - | SEC_IN_MEMORY); - tsec->alignment_power = 2; - } - /* Likewise for the descriptor section. */ - if (xcoff_hash_table (info)->descriptor_section == NULL) - { - asection *dsec; - - dsec = bfd_make_section_anyway (abfd, ".ds"); - if (dsec == NULL) - goto error_return; - xcoff_hash_table (info)->descriptor_section = dsec; - dsec->flags |= (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS - | SEC_IN_MEMORY); - dsec->alignment_power = 2; - } - /* Likewise for the .debug section. */ - if (xcoff_hash_table (info)->debug_section == NULL - && info->strip != strip_all) - { - asection *dsec; - - dsec = bfd_make_section_anyway (abfd, ".debug"); - if (dsec == NULL) - goto error_return; - xcoff_hash_table (info)->debug_section = dsec; - dsec->flags |= SEC_HAS_CONTENTS | SEC_IN_MEMORY; - } - } - - if ((abfd->flags & DYNAMIC) != 0 - && ! info->static_link) - return true; - - n_tmask = coff_data (abfd)->local_n_tmask; - n_btshft = coff_data (abfd)->local_n_btshft; - - /* Define macros so that ISFCN, et. al., macros work correctly. */ -#define N_TMASK n_tmask -#define N_BTSHFT n_btshft - - if (info->keep_memory) - default_copy = false; - else - default_copy = true; - - symcount = obj_raw_syment_count (abfd); - - /* We keep a list of the linker hash table entries that correspond - to each external symbol. */ - sym_hash = ((struct xcoff_link_hash_entry **) - bfd_alloc (abfd, - (symcount - * sizeof (struct xcoff_link_hash_entry *)))); - if (sym_hash == NULL && symcount != 0) - goto error_return; - coff_data (abfd)->sym_hashes = (struct coff_link_hash_entry **) sym_hash; - memset (sym_hash, 0, - (size_t) symcount * sizeof (struct xcoff_link_hash_entry *)); - - /* Because of the weird stuff we are doing with XCOFF csects, we can - not easily determine which section a symbol is in, so we store - the information in the tdata for the input file. */ - csect_cache = ((asection **) - bfd_alloc (abfd, symcount * sizeof (asection *))); - if (csect_cache == NULL && symcount != 0) - goto error_return; - xcoff_data (abfd)->csects = csect_cache; - memset (csect_cache, 0, (size_t) symcount * sizeof (asection *)); - - /* While splitting sections into csects, we need to assign the - relocs correctly. The relocs and the csects must both be in - order by VMA within a given section, so we handle this by - scanning along the relocs as we process the csects. We index - into reloc_info using the section target_index. */ - reloc_info = ((struct reloc_info_struct *) - bfd_malloc ((abfd->section_count + 1) - * sizeof (struct reloc_info_struct))); - if (reloc_info == NULL) - goto error_return; - memset ((PTR) reloc_info, 0, - (abfd->section_count + 1) * sizeof (struct reloc_info_struct)); - - /* Read in the relocs and line numbers for each section. */ - linesz = bfd_coff_linesz (abfd); - last_real = NULL; - for (o = abfd->sections; o != NULL; o = o->next) - { - last_real = o; - if ((o->flags & SEC_RELOC) != 0) - { - reloc_info[o->target_index].relocs = - xcoff_read_internal_relocs (abfd, o, true, (bfd_byte *) NULL, - false, (struct internal_reloc *) NULL); - reloc_info[o->target_index].csects = - (asection **) bfd_malloc (o->reloc_count * sizeof (asection *)); - if (reloc_info[o->target_index].csects == NULL) - goto error_return; - memset (reloc_info[o->target_index].csects, 0, - o->reloc_count * sizeof (asection *)); - } - - if ((info->strip == strip_none || info->strip == strip_some) - && o->lineno_count > 0) - { - bfd_byte *linenos; - - linenos = (bfd_byte *) bfd_malloc (o->lineno_count * linesz); - if (linenos == NULL) - goto error_return; - reloc_info[o->target_index].linenos = linenos; - if (bfd_seek (abfd, o->line_filepos, SEEK_SET) != 0 - || (bfd_read (linenos, linesz, o->lineno_count, abfd) - != linesz * o->lineno_count)) - goto error_return; - } - } - - /* Don't let the linker relocation routines discard the symbols. */ - obj_coff_keep_syms (abfd) = true; - - csect = NULL; - csect_index = 0; - first_csect = NULL; - - symesz = bfd_coff_symesz (abfd); - BFD_ASSERT (symesz == bfd_coff_auxesz (abfd)); - esym = (bfd_byte *) obj_coff_external_syms (abfd); - esym_end = esym + symcount * symesz; - while (esym < esym_end) - { - struct internal_syment sym; - union internal_auxent aux; - const char *name; - char buf[SYMNMLEN + 1]; - int smtyp; - flagword flags; - asection *section; - bfd_vma value; - struct xcoff_link_hash_entry *set_toc; - - bfd_coff_swap_sym_in (abfd, (PTR) esym, (PTR) &sym); - - /* In this pass we are only interested in symbols with csect - information. */ - if (sym.n_sclass != C_EXT && sym.n_sclass != C_HIDEXT) - { - if (sym.n_sclass == C_FILE && csect != NULL) - { - xcoff_section_data (abfd, csect)->last_symndx = - ((esym - - (bfd_byte *) obj_coff_external_syms (abfd)) - / symesz); - csect = NULL; - } - - if (csect != NULL) - *csect_cache = csect; - else if (first_csect == NULL || sym.n_sclass == C_FILE) - *csect_cache = coff_section_from_bfd_index (abfd, sym.n_scnum); - else - *csect_cache = NULL; - esym += (sym.n_numaux + 1) * symesz; - sym_hash += sym.n_numaux + 1; - csect_cache += sym.n_numaux + 1; - continue; - } - - name = _bfd_coff_internal_syment_name (abfd, &sym, buf); - if (name == NULL) - goto error_return; - - /* If this symbol has line number information attached to it, - and we're not stripping it, count the number of entries and - add them to the count for this csect. In the final link pass - we are going to attach line number information by symbol, - rather than by section, in order to more easily handle - garbage collection. */ - if ((info->strip == strip_none || info->strip == strip_some) - && sym.n_numaux > 1 - && csect != NULL - && ISFCN (sym.n_type)) - { - union internal_auxent auxlin; - - bfd_coff_swap_aux_in (abfd, (PTR) (esym + symesz), - sym.n_type, sym.n_sclass, - 0, sym.n_numaux, (PTR) &auxlin); - if (auxlin.x_sym.x_fcnary.x_fcn.x_lnnoptr != 0) - { - asection *enclosing; - bfd_size_type linoff; - - enclosing = xcoff_section_data (abfd, csect)->enclosing; - if (enclosing == NULL) - { - (*_bfd_error_handler) - (_("%s: `%s' has line numbers but no enclosing section"), - bfd_get_filename (abfd), name); - bfd_set_error (bfd_error_bad_value); - goto error_return; - } - linoff = (auxlin.x_sym.x_fcnary.x_fcn.x_lnnoptr - - enclosing->line_filepos); - if (linoff < enclosing->lineno_count * linesz) - { - struct internal_lineno lin; - bfd_byte *linpstart; - - linpstart = (reloc_info[enclosing->target_index].linenos - + linoff); - bfd_coff_swap_lineno_in (abfd, (PTR) linpstart, (PTR) &lin); - if (lin.l_lnno == 0 - && ((bfd_size_type) lin.l_addr.l_symndx - == ((esym - - (bfd_byte *) obj_coff_external_syms (abfd)) - / symesz))) - { - bfd_byte *linpend, *linp; - - linpend = (reloc_info[enclosing->target_index].linenos - + enclosing->lineno_count * linesz); - for (linp = linpstart + linesz; - linp < linpend; - linp += linesz) - { - bfd_coff_swap_lineno_in (abfd, (PTR) linp, - (PTR) &lin); - if (lin.l_lnno == 0) - break; - } - csect->lineno_count += (linp - linpstart) / linesz; - /* The setting of line_filepos will only be - useful if all the line number entries for a - csect are contiguous; this only matters for - error reporting. */ - if (csect->line_filepos == 0) - csect->line_filepos = - auxlin.x_sym.x_fcnary.x_fcn.x_lnnoptr; - } - } - } - } - - /* Pick up the csect auxiliary information. */ - - if (sym.n_numaux == 0) - { - (*_bfd_error_handler) - (_("%s: class %d symbol `%s' has no aux entries"), - bfd_get_filename (abfd), sym.n_sclass, name); - bfd_set_error (bfd_error_bad_value); - goto error_return; - } - - bfd_coff_swap_aux_in (abfd, - (PTR) (esym + symesz * sym.n_numaux), - sym.n_type, sym.n_sclass, - sym.n_numaux - 1, sym.n_numaux, - (PTR) &aux); - - smtyp = SMTYP_SMTYP (aux.x_csect.x_smtyp); - - flags = BSF_GLOBAL; - section = NULL; - value = 0; - set_toc = NULL; - - switch (smtyp) - { - default: - (*_bfd_error_handler) - (_("%s: symbol `%s' has unrecognized csect type %d"), - bfd_get_filename (abfd), name, smtyp); - bfd_set_error (bfd_error_bad_value); - goto error_return; - - case XTY_ER: - /* This is an external reference. */ - if (sym.n_sclass == C_HIDEXT - || sym.n_scnum != N_UNDEF - || aux.x_csect.x_scnlen.l != 0) - { - (*_bfd_error_handler) - (_("%s: bad XTY_ER symbol `%s': class %d scnum %d scnlen %d"), - bfd_get_filename (abfd), name, sym.n_sclass, sym.n_scnum, - aux.x_csect.x_scnlen.l); - bfd_set_error (bfd_error_bad_value); - goto error_return; - } - - /* An XMC_XO external reference is actually a reference to - an absolute location. */ - if (aux.x_csect.x_smclas != XMC_XO) - section = bfd_und_section_ptr; - else - { - section = bfd_abs_section_ptr; - value = sym.n_value; - } - break; - - case XTY_SD: - /* This is a csect definition. */ - - if (csect != NULL) - { - xcoff_section_data (abfd, csect)->last_symndx = - ((esym - - (bfd_byte *) obj_coff_external_syms (abfd)) - / symesz); - } - - csect = NULL; - csect_index = -1; - - /* When we see a TOC anchor, we record the TOC value. */ - if (aux.x_csect.x_smclas == XMC_TC0) - { - if (sym.n_sclass != C_HIDEXT - || aux.x_csect.x_scnlen.l != 0) - { - (*_bfd_error_handler) - (_("%s: XMC_TC0 symbol `%s' is class %d scnlen %d"), - bfd_get_filename (abfd), name, sym.n_sclass, - aux.x_csect.x_scnlen.l); - bfd_set_error (bfd_error_bad_value); - goto error_return; - } - xcoff_data (abfd)->toc = sym.n_value; - } - - /* We must merge TOC entries for the same symbol. We can - merge two TOC entries if they are both C_HIDEXT, they - both have the same name, they are both 4 bytes long, and - they both have a relocation table entry for an external - symbol with the same name. Unfortunately, this means - that we must look through the relocations. Ick. */ - if (aux.x_csect.x_smclas == XMC_TC - && sym.n_sclass == C_HIDEXT - && aux.x_csect.x_scnlen.l == 4 - && info->hash->creator == abfd->xvec) - { - asection *enclosing; - struct internal_reloc *relocs; - bfd_size_type relindx; - struct internal_reloc *rel; - - enclosing = coff_section_from_bfd_index (abfd, sym.n_scnum); - if (enclosing == NULL) - goto error_return; - - relocs = reloc_info[enclosing->target_index].relocs; - relindx = xcoff_find_reloc (relocs, enclosing->reloc_count, - sym.n_value); - rel = relocs + relindx; - if (relindx < enclosing->reloc_count - && rel->r_vaddr == (bfd_vma) sym.n_value - && rel->r_size == 31 - && rel->r_type == R_POS) - { - bfd_byte *erelsym; - struct internal_syment relsym; - - erelsym = ((bfd_byte *) obj_coff_external_syms (abfd) - + rel->r_symndx * symesz); - bfd_coff_swap_sym_in (abfd, (PTR) erelsym, (PTR) &relsym); - if (relsym.n_sclass == C_EXT) - { - const char *relname; - char relbuf[SYMNMLEN + 1]; - boolean copy; - struct xcoff_link_hash_entry *h; - - /* At this point we know that the TOC entry is - for an externally visible symbol. */ - relname = _bfd_coff_internal_syment_name (abfd, &relsym, - relbuf); - if (relname == NULL) - goto error_return; - - /* We only merge TOC entries if the TC name is - the same as the symbol name. This handles - the normal case, but not common cases like - SYM.P4 which gcc generates to store SYM + 4 - in the TOC. FIXME. */ - if (strcmp (name, relname) == 0) - { - copy = (! info->keep_memory - || relsym._n._n_n._n_zeroes != 0 - || relsym._n._n_n._n_offset == 0); - h = xcoff_link_hash_lookup (xcoff_hash_table (info), - relname, true, copy, - false); - if (h == NULL) - goto error_return; - - /* At this point h->root.type could be - bfd_link_hash_new. That should be OK, - since we know for sure that we will come - across this symbol as we step through the - file. */ - - /* We store h in *sym_hash for the - convenience of the relocate_section - function. */ - *sym_hash = h; - - if (h->toc_section != NULL) - { - asection **rel_csects; - - /* We already have a TOC entry for this - symbol, so we can just ignore this - one. */ - rel_csects = - reloc_info[enclosing->target_index].csects; - rel_csects[relindx] = bfd_und_section_ptr; - break; - } - - /* We are about to create a TOC entry for - this symbol. */ - set_toc = h; - } - } - } - } - - /* We need to create a new section. We get the name from - the csect storage mapping class, so that the linker can - accumulate similar csects together. */ - { - static const char *csect_name_by_class[] = - { - ".pr", ".ro", ".db", ".tc", ".ua", ".rw", ".gl", ".xo", - ".sv", ".bs", ".ds", ".uc", ".ti", ".tb", NULL, ".tc0", - ".td" - }; - const char *csect_name; - asection *enclosing; - - if ((aux.x_csect.x_smclas >= - sizeof csect_name_by_class / sizeof csect_name_by_class[0]) - || csect_name_by_class[aux.x_csect.x_smclas] == NULL) - { - (*_bfd_error_handler) - (_("%s: symbol `%s' has unrecognized smclas %d"), - bfd_get_filename (abfd), name, aux.x_csect.x_smclas); - bfd_set_error (bfd_error_bad_value); - goto error_return; - } - - csect_name = csect_name_by_class[aux.x_csect.x_smclas]; - csect = bfd_make_section_anyway (abfd, csect_name); - if (csect == NULL) - goto error_return; - enclosing = coff_section_from_bfd_index (abfd, sym.n_scnum); - if (enclosing == NULL) - goto error_return; - if (! bfd_is_abs_section (enclosing) - && ((bfd_vma) sym.n_value < enclosing->vma - || ((bfd_vma) sym.n_value + aux.x_csect.x_scnlen.l - > enclosing->vma + enclosing->_raw_size))) - { - (*_bfd_error_handler) - (_("%s: csect `%s' not in enclosing section"), - bfd_get_filename (abfd), name); - bfd_set_error (bfd_error_bad_value); - goto error_return; - } - csect->vma = sym.n_value; - csect->filepos = (enclosing->filepos - + sym.n_value - - enclosing->vma); - csect->_raw_size = aux.x_csect.x_scnlen.l; - csect->flags |= SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS; - csect->alignment_power = SMTYP_ALIGN (aux.x_csect.x_smtyp); - - /* Record the enclosing section in the tdata for this new - section. */ - csect->used_by_bfd = - (PTR) bfd_zalloc (abfd, sizeof (struct coff_section_tdata)); - if (csect->used_by_bfd == NULL) - goto error_return; - coff_section_data (abfd, csect)->tdata = - bfd_zalloc (abfd, sizeof (struct xcoff_section_tdata)); - if (coff_section_data (abfd, csect)->tdata == NULL) - goto error_return; - xcoff_section_data (abfd, csect)->enclosing = enclosing; - xcoff_section_data (abfd, csect)->lineno_count = - enclosing->lineno_count; - - if (enclosing->owner == abfd) - { - struct internal_reloc *relocs; - bfd_size_type relindx; - struct internal_reloc *rel; - asection **rel_csect; - - relocs = reloc_info[enclosing->target_index].relocs; - relindx = xcoff_find_reloc (relocs, enclosing->reloc_count, - csect->vma); - rel = relocs + relindx; - rel_csect = (reloc_info[enclosing->target_index].csects - + relindx); - csect->rel_filepos = (enclosing->rel_filepos - + relindx * bfd_coff_relsz (abfd)); - while (relindx < enclosing->reloc_count - && *rel_csect == NULL - && rel->r_vaddr < csect->vma + csect->_raw_size) - { - *rel_csect = csect; - csect->flags |= SEC_RELOC; - ++csect->reloc_count; - ++relindx; - ++rel; - ++rel_csect; - } - } - - /* There are a number of other fields and section flags - which we do not bother to set. */ - - csect_index = ((esym - - (bfd_byte *) obj_coff_external_syms (abfd)) - / symesz); - - xcoff_section_data (abfd, csect)->first_symndx = csect_index; - - if (first_csect == NULL) - first_csect = csect; - - /* If this symbol is C_EXT, we treat it as starting at the - beginning of the newly created section. */ - if (sym.n_sclass == C_EXT) - { - section = csect; - value = 0; - } - - /* If this is a TOC section for a symbol, record it. */ - if (set_toc != NULL) - set_toc->toc_section = csect; - } - break; - - case XTY_LD: - /* This is a label definition. The x_scnlen field is the - symbol index of the csect. I believe that this must - always follow the appropriate XTY_SD symbol, so I will - insist on it. */ - { - boolean bad; - - bad = false; - if (aux.x_csect.x_scnlen.l < 0 - || (aux.x_csect.x_scnlen.l - >= esym - (bfd_byte *) obj_coff_external_syms (abfd))) - bad = true; - if (! bad) - { - section = xcoff_data (abfd)->csects[aux.x_csect.x_scnlen.l]; - if (section == NULL - || (section->flags & SEC_HAS_CONTENTS) == 0) - bad = true; - } - if (bad) - { - (*_bfd_error_handler) - (_("%s: misplaced XTY_LD `%s'"), - bfd_get_filename (abfd), name); - bfd_set_error (bfd_error_bad_value); - goto error_return; - } - - value = sym.n_value - csect->vma; - } - break; - - case XTY_CM: - /* This is an unitialized csect. We could base the name on - the storage mapping class, but we don't bother except for - an XMC_TD symbol. If this csect is externally visible, - it is a common symbol. We put XMC_TD symbols in sections - named .tocbss, and rely on the linker script to put that - in the TOC area. */ - - if (csect != NULL) - { - xcoff_section_data (abfd, csect)->last_symndx = - ((esym - - (bfd_byte *) obj_coff_external_syms (abfd)) - / symesz); - } - - if (aux.x_csect.x_smclas == XMC_TD) - csect = bfd_make_section_anyway (abfd, ".tocbss"); - else - csect = bfd_make_section_anyway (abfd, ".bss"); - if (csect == NULL) - goto error_return; - csect->vma = sym.n_value; - csect->_raw_size = aux.x_csect.x_scnlen.l; - csect->flags |= SEC_ALLOC; - csect->alignment_power = SMTYP_ALIGN (aux.x_csect.x_smtyp); - /* There are a number of other fields and section flags - which we do not bother to set. */ - - csect_index = ((esym - - (bfd_byte *) obj_coff_external_syms (abfd)) - / symesz); - - csect->used_by_bfd = - (PTR) bfd_zalloc (abfd, sizeof (struct coff_section_tdata)); - if (csect->used_by_bfd == NULL) - goto error_return; - coff_section_data (abfd, csect)->tdata = - bfd_zalloc (abfd, sizeof (struct xcoff_section_tdata)); - if (coff_section_data (abfd, csect)->tdata == NULL) - goto error_return; - xcoff_section_data (abfd, csect)->first_symndx = csect_index; - - if (first_csect == NULL) - first_csect = csect; - - if (sym.n_sclass == C_EXT) - { - csect->flags |= SEC_IS_COMMON; - csect->_raw_size = 0; - section = csect; - value = aux.x_csect.x_scnlen.l; - } - - break; - } - - /* Check for magic symbol names. */ - if ((smtyp == XTY_SD || smtyp == XTY_CM) - && aux.x_csect.x_smclas != XMC_TC - && aux.x_csect.x_smclas != XMC_TD) - { - int i; - - i = -1; - if (name[0] == '_') - { - if (strcmp (name, "_text") == 0) - i = 0; - else if (strcmp (name, "_etext") == 0) - i = 1; - else if (strcmp (name, "_data") == 0) - i = 2; - else if (strcmp (name, "_edata") == 0) - i = 3; - else if (strcmp (name, "_end") == 0) - i = 4; - } - else if (name[0] == 'e' && strcmp (name, "end") == 0) - i = 5; - - if (i != -1) - xcoff_hash_table (info)->special_sections[i] = csect; - } - - /* Now we have enough information to add the symbol to the - linker hash table. */ - - if (sym.n_sclass == C_EXT) - { - boolean copy; - - BFD_ASSERT (section != NULL); - - /* We must copy the name into memory if we got it from the - syment itself, rather than the string table. */ - copy = default_copy; - if (sym._n._n_n._n_zeroes != 0 - || sym._n._n_n._n_offset == 0) - copy = true; - - /* The AIX linker appears to only detect multiple symbol - definitions when there is a reference to the symbol. If - a symbol is defined multiple times, and the only - references are from the same object file, the AIX linker - appears to permit it. It does not merge the different - definitions, but handles them independently. On the - other hand, if there is a reference, the linker reports - an error. - - This matters because the AIX <net/net_globals.h> header - file actually defines an initialized array, so we have to - actually permit that to work. - - Just to make matters even more confusing, the AIX linker - appears to permit multiple symbol definitions whenever - the second definition is in an archive rather than an - object file. This may be a consequence of the manner in - which it handles archives: I think it may load the entire - archive in as separate csects, and then let garbage - collection discard symbols. - - We also have to handle the case of statically linking a - shared object, which will cause symbol redefinitions, - although this is an easier case to detect. */ - - if (info->hash->creator == abfd->xvec) - { - if (! bfd_is_und_section (section)) - *sym_hash = xcoff_link_hash_lookup (xcoff_hash_table (info), - name, true, copy, false); - else - *sym_hash = ((struct xcoff_link_hash_entry *) - bfd_wrapped_link_hash_lookup (abfd, info, name, - true, copy, false)); - if (*sym_hash == NULL) - goto error_return; - if (((*sym_hash)->root.type == bfd_link_hash_defined - || (*sym_hash)->root.type == bfd_link_hash_defweak) - && ! bfd_is_und_section (section) - && ! bfd_is_com_section (section)) - { - /* This is a second definition of a defined symbol. */ - if ((abfd->flags & DYNAMIC) != 0 - && ((*sym_hash)->smclas != XMC_GL - || aux.x_csect.x_smclas == XMC_GL - || ((*sym_hash)->root.u.def.section->owner->flags - & DYNAMIC) == 0)) - { - /* The new symbol is from a shared library, and - either the existing symbol is not global - linkage code or this symbol is global linkage - code. If the existing symbol is global - linkage code and the new symbol is not, then - we want to use the new symbol. */ - section = bfd_und_section_ptr; - value = 0; - } - else if (((*sym_hash)->root.u.def.section->owner->flags - & DYNAMIC) != 0) - { - /* The existing symbol is from a shared library. - Replace it. */ - (*sym_hash)->root.type = bfd_link_hash_undefined; - (*sym_hash)->root.u.undef.abfd = - (*sym_hash)->root.u.def.section->owner; - } - else if (abfd->my_archive != NULL) - { - /* This is a redefinition in an object contained - in an archive. Just ignore it. See the - comment above. */ - section = bfd_und_section_ptr; - value = 0; - } - else if ((*sym_hash)->root.next != NULL - || info->hash->undefs_tail == &(*sym_hash)->root) - { - /* This symbol has been referenced. In this - case, we just continue and permit the - multiple definition error. See the comment - above about the behaviour of the AIX linker. */ - } - else if ((*sym_hash)->smclas == aux.x_csect.x_smclas) - { - /* The symbols are both csects of the same - class. There is at least a chance that this - is a semi-legitimate redefinition. */ - section = bfd_und_section_ptr; - value = 0; - (*sym_hash)->flags |= XCOFF_MULTIPLY_DEFINED; - } - } - else if (((*sym_hash)->flags & XCOFF_MULTIPLY_DEFINED) != 0 - && ((*sym_hash)->root.type == bfd_link_hash_defined - || (*sym_hash)->root.type == bfd_link_hash_defweak) - && (bfd_is_und_section (section) - || bfd_is_com_section (section))) - { - /* This is a reference to a multiply defined symbol. - Report the error now. See the comment above - about the behaviour of the AIX linker. We could - also do this with warning symbols, but I'm not - sure the XCOFF linker is wholly prepared to - handle them, and that would only be a warning, - not an error. */ - if (! ((*info->callbacks->multiple_definition) - (info, (*sym_hash)->root.root.string, - (bfd *) NULL, (asection *) NULL, 0, - (*sym_hash)->root.u.def.section->owner, - (*sym_hash)->root.u.def.section, - (*sym_hash)->root.u.def.value))) - goto error_return; - /* Try not to give this error too many times. */ - (*sym_hash)->flags &= ~XCOFF_MULTIPLY_DEFINED; - } - } - - /* _bfd_generic_link_add_one_symbol may call the linker to - generate an error message, and the linker may try to read - the symbol table to give a good error. Right now, the - line numbers are in an inconsistent state, since they are - counted both in the real sections and in the new csects. - We need to leave the count in the real sections so that - the linker can report the line number of the error - correctly, so temporarily clobber the link to the csects - so that the linker will not try to read the line numbers - a second time from the csects. */ - BFD_ASSERT (last_real->next == first_csect); - last_real->next = NULL; - if (! (_bfd_generic_link_add_one_symbol - (info, abfd, name, flags, section, value, - (const char *) NULL, copy, true, - (struct bfd_link_hash_entry **) sym_hash))) - goto error_return; - last_real->next = first_csect; - - if (smtyp == XTY_CM) - { - if ((*sym_hash)->root.type != bfd_link_hash_common - || (*sym_hash)->root.u.c.p->section != csect) - { - /* We don't need the common csect we just created. */ - csect->_raw_size = 0; - } - else - { - (*sym_hash)->root.u.c.p->alignment_power - = csect->alignment_power; - } - } - - if (info->hash->creator == abfd->xvec) - { - int flag; - - if (smtyp == XTY_ER || smtyp == XTY_CM) - flag = XCOFF_REF_REGULAR; - else - flag = XCOFF_DEF_REGULAR; - (*sym_hash)->flags |= flag; - - if ((*sym_hash)->smclas == XMC_UA - || flag == XCOFF_DEF_REGULAR) - (*sym_hash)->smclas = aux.x_csect.x_smclas; - } - } - - *csect_cache = csect; - - esym += (sym.n_numaux + 1) * symesz; - sym_hash += sym.n_numaux + 1; - csect_cache += sym.n_numaux + 1; - } - - BFD_ASSERT (last_real == NULL || last_real->next == first_csect); - - /* Make sure that we have seen all the relocs. */ - for (o = abfd->sections; o != first_csect; o = o->next) - { - /* Reset the section size and the line number count, since the - data is now attached to the csects. Don't reset the size of - the .debug section, since we need to read it below in - bfd_xcoff_size_dynamic_sections. */ - if (strcmp (bfd_get_section_name (abfd, o), ".debug") != 0) - o->_raw_size = 0; - o->lineno_count = 0; - - if ((o->flags & SEC_RELOC) != 0) - { - bfd_size_type i; - struct internal_reloc *rel; - asection **rel_csect; - - rel = reloc_info[o->target_index].relocs; - rel_csect = reloc_info[o->target_index].csects; - for (i = 0; i < o->reloc_count; i++, rel++, rel_csect++) - { - if (*rel_csect == NULL) - { - (*_bfd_error_handler) - (_("%s: reloc %s:%d not in csect"), - bfd_get_filename (abfd), o->name, i); - bfd_set_error (bfd_error_bad_value); - goto error_return; - } - - /* We identify all symbols which are called, so that we - can create glue code for calls to functions imported - from dynamic objects. */ - if (info->hash->creator == abfd->xvec - && *rel_csect != bfd_und_section_ptr - && (rel->r_type == R_BR - || rel->r_type == R_RBR) - && obj_xcoff_sym_hashes (abfd)[rel->r_symndx] != NULL) - { - struct xcoff_link_hash_entry *h; - - h = obj_xcoff_sym_hashes (abfd)[rel->r_symndx]; - h->flags |= XCOFF_CALLED; - /* If the symbol name starts with a period, it is - the code of a function. If the symbol is - currently undefined, then add an undefined symbol - for the function descriptor. This should do no - harm, because any regular object that defines the - function should also define the function - descriptor. It helps, because it means that we - will identify the function descriptor with a - dynamic object if a dynamic object defines it. */ - if (h->root.root.string[0] == '.' - && h->descriptor == NULL) - { - struct xcoff_link_hash_entry *hds; - - hds = xcoff_link_hash_lookup (xcoff_hash_table (info), - h->root.root.string + 1, - true, false, true); - if (hds == NULL) - goto error_return; - if (hds->root.type == bfd_link_hash_new) - { - if (! (_bfd_generic_link_add_one_symbol - (info, abfd, hds->root.root.string, - (flagword) 0, bfd_und_section_ptr, - (bfd_vma) 0, (const char *) NULL, false, - true, - (struct bfd_link_hash_entry **) &hds))) - goto error_return; - } - hds->flags |= XCOFF_DESCRIPTOR; - BFD_ASSERT ((hds->flags & XCOFF_CALLED) == 0 - && (h->flags & XCOFF_DESCRIPTOR) == 0); - hds->descriptor = h; - h->descriptor = hds; - } - } - } - - free (reloc_info[o->target_index].csects); - reloc_info[o->target_index].csects = NULL; - - /* Reset SEC_RELOC and the reloc_count, since the reloc - information is now attached to the csects. */ - o->flags &=~ SEC_RELOC; - o->reloc_count = 0; - - /* If we are not keeping memory, free the reloc information. */ - if (! info->keep_memory - && coff_section_data (abfd, o) != NULL - && coff_section_data (abfd, o)->relocs != NULL - && ! coff_section_data (abfd, o)->keep_relocs) - { - free (coff_section_data (abfd, o)->relocs); - coff_section_data (abfd, o)->relocs = NULL; - } - } - - /* Free up the line numbers. FIXME: We could cache these - somewhere for the final link, to avoid reading them again. */ - if (reloc_info[o->target_index].linenos != NULL) - { - free (reloc_info[o->target_index].linenos); - reloc_info[o->target_index].linenos = NULL; - } - } - - free (reloc_info); - - obj_coff_keep_syms (abfd) = keep_syms; - - return true; - - error_return: - if (reloc_info != NULL) - { - for (o = abfd->sections; o != NULL; o = o->next) - { - if (reloc_info[o->target_index].csects != NULL) - free (reloc_info[o->target_index].csects); - if (reloc_info[o->target_index].linenos != NULL) - free (reloc_info[o->target_index].linenos); - } - free (reloc_info); - } - obj_coff_keep_syms (abfd) = keep_syms; - return false; -} - -#undef N_TMASK -#undef N_BTSHFT - -/* This function is used to add symbols from a dynamic object to the - global symbol table. */ - -static boolean -xcoff_link_add_dynamic_symbols (abfd, info) - bfd *abfd; - struct bfd_link_info *info; -{ - asection *lsec; - bfd_byte *buf; - struct internal_ldhdr ldhdr; - const char *strings; - struct external_ldsym *elsym, *elsymend; - struct xcoff_import_file *n; - const char *bname; - const char *mname; - const char *s; - unsigned int c; - struct xcoff_import_file **pp; - - /* We can only handle a dynamic object if we are generating an XCOFF - output file. */ - if (info->hash->creator != abfd->xvec) - { - (*_bfd_error_handler) - (_("%s: XCOFF shared object when not producing XCOFF output"), - bfd_get_filename (abfd)); - bfd_set_error (bfd_error_invalid_operation); - return false; - } - - /* The symbols we use from a dynamic object are not the symbols in - the normal symbol table, but, rather, the symbols in the export - table. If there is a global symbol in a dynamic object which is - not in the export table, the loader will not be able to find it, - so we don't want to find it either. Also, on AIX 4.1.3, shr.o in - libc.a has symbols in the export table which are not in the - symbol table. */ - - /* Read in the .loader section. FIXME: We should really use the - o_snloader field in the a.out header, rather than grabbing the - section by name. */ - lsec = bfd_get_section_by_name (abfd, ".loader"); - if (lsec == NULL) - { - (*_bfd_error_handler) - (_("%s: dynamic object with no .loader section"), - bfd_get_filename (abfd)); - bfd_set_error (bfd_error_no_symbols); - return false; - } - - if (! xcoff_get_section_contents (abfd, lsec)) - return false; - buf = coff_section_data (abfd, lsec)->contents; - - /* Remove the sections from this object, so that they do not get - included in the link. */ - abfd->sections = NULL; - - xcoff_swap_ldhdr_in (abfd, (struct external_ldhdr *) buf, &ldhdr); - - strings = (char *) buf + ldhdr.l_stoff; - - elsym = (struct external_ldsym *) (buf + LDHDRSZ); - elsymend = elsym + ldhdr.l_nsyms; - BFD_ASSERT (sizeof (struct external_ldsym) == LDSYMSZ); - for (; elsym < elsymend; elsym++) - { - struct internal_ldsym ldsym; - char nambuf[SYMNMLEN + 1]; - const char *name; - struct xcoff_link_hash_entry *h; - - xcoff_swap_ldsym_in (abfd, elsym, &ldsym); - - /* We are only interested in exported symbols. */ - if ((ldsym.l_smtype & L_EXPORT) == 0) - continue; - - if (ldsym._l._l_l._l_zeroes == 0) - name = strings + ldsym._l._l_l._l_offset; - else - { - memcpy (nambuf, ldsym._l._l_name, SYMNMLEN); - nambuf[SYMNMLEN] = '\0'; - name = nambuf; - } - - /* Normally we could not call xcoff_link_hash_lookup in an add - symbols routine, since we might not be using an XCOFF hash - table. However, we verified above that we are using an XCOFF - hash table. */ - - h = xcoff_link_hash_lookup (xcoff_hash_table (info), name, true, - true, true); - if (h == NULL) - return false; - - h->flags |= XCOFF_DEF_DYNAMIC; - - /* If the symbol is undefined, and the BFD it was found in is - not a dynamic object, change the BFD to this dynamic object, - so that we can get the correct import file ID. */ - if ((h->root.type == bfd_link_hash_undefined - || h->root.type == bfd_link_hash_undefweak) - && (h->root.u.undef.abfd == NULL - || (h->root.u.undef.abfd->flags & DYNAMIC) == 0)) - h->root.u.undef.abfd = abfd; - - if (h->root.type == bfd_link_hash_new) - { - h->root.type = bfd_link_hash_undefined; - h->root.u.undef.abfd = abfd; - /* We do not want to add this to the undefined symbol list. */ - } - - if (h->smclas == XMC_UA - || h->root.type == bfd_link_hash_undefined - || h->root.type == bfd_link_hash_undefweak) - h->smclas = ldsym.l_smclas; - - /* Unless this is an XMC_XO symbol, we don't bother to actually - define it, since we don't have a section to put it in anyhow. - Instead, the relocation routines handle the DEF_DYNAMIC flag - correctly. */ - - if (h->smclas == XMC_XO - && (h->root.type == bfd_link_hash_undefined - || h->root.type == bfd_link_hash_undefweak)) - { - /* This symbol has an absolute value. */ - h->root.type = bfd_link_hash_defined; - h->root.u.def.section = bfd_abs_section_ptr; - h->root.u.def.value = ldsym.l_value; - } - - /* If this symbol defines a function descriptor, then it - implicitly defines the function code as well. */ - if (h->smclas == XMC_DS - || (h->smclas == XMC_XO && name[0] != '.')) - h->flags |= XCOFF_DESCRIPTOR; - if ((h->flags & XCOFF_DESCRIPTOR) != 0) - { - struct xcoff_link_hash_entry *hds; - - hds = h->descriptor; - if (hds == NULL) - { - char *dsnm; - - dsnm = bfd_malloc (strlen (name) + 2); - if (dsnm == NULL) - return false; - dsnm[0] = '.'; - strcpy (dsnm + 1, name); - hds = xcoff_link_hash_lookup (xcoff_hash_table (info), dsnm, - true, true, true); - free (dsnm); - if (hds == NULL) - return false; - - if (hds->root.type == bfd_link_hash_new) - { - hds->root.type = bfd_link_hash_undefined; - hds->root.u.undef.abfd = abfd; - /* We do not want to add this to the undefined - symbol list. */ - } - - hds->descriptor = h; - h->descriptor = hds; - } - - hds->flags |= XCOFF_DEF_DYNAMIC; - if (hds->smclas == XMC_UA) - hds->smclas = XMC_PR; - - /* An absolute symbol appears to actually define code, not a - function descriptor. This is how some math functions are - implemented on AIX 4.1. */ - if (h->smclas == XMC_XO - && (hds->root.type == bfd_link_hash_undefined - || hds->root.type == bfd_link_hash_undefweak)) - { - hds->smclas = XMC_XO; - hds->root.type = bfd_link_hash_defined; - hds->root.u.def.section = bfd_abs_section_ptr; - hds->root.u.def.value = ldsym.l_value; - } - } - } - - if (buf != NULL && ! coff_section_data (abfd, lsec)->keep_contents) - { - free (coff_section_data (abfd, lsec)->contents); - coff_section_data (abfd, lsec)->contents = NULL; - } - - /* Record this file in the import files. */ - - n = ((struct xcoff_import_file *) - bfd_alloc (abfd, sizeof (struct xcoff_import_file))); - if (n == NULL) - return false; - n->next = NULL; - - /* For some reason, the path entry in the import file list for a - shared object appears to always be empty. The file name is the - base name. */ - n->path = ""; - if (abfd->my_archive == NULL) - { - bname = bfd_get_filename (abfd); - mname = ""; - } - else - { - bname = bfd_get_filename (abfd->my_archive); - mname = bfd_get_filename (abfd); - } - s = strrchr (bname, '/'); - if (s != NULL) - bname = s + 1; - n->file = bname; - n->member = mname; - - /* We start c at 1 because the first import file number is reserved - for LIBPATH. */ - for (pp = &xcoff_hash_table (info)->imports, c = 1; - *pp != NULL; - pp = &(*pp)->next, ++c) - ; - *pp = n; - - xcoff_data (abfd)->import_file_id = c; - - return true; -} - -/* Routines that are called after all the input files have been - handled, but before the sections are laid out in memory. */ - -/* Mark a symbol as not being garbage, including the section in which - it is defined. */ - -static INLINE boolean -xcoff_mark_symbol (info, h) - struct bfd_link_info *info; - struct xcoff_link_hash_entry *h; -{ - if ((h->flags & XCOFF_MARK) != 0) - return true; - - h->flags |= XCOFF_MARK; - if (h->root.type == bfd_link_hash_defined - || h->root.type == bfd_link_hash_defweak) - { - asection *hsec; - - hsec = h->root.u.def.section; - if (! bfd_is_abs_section (hsec) - && (hsec->flags & SEC_MARK) == 0) - { - if (! xcoff_mark (info, hsec)) - return false; - } - } - - if (h->toc_section != NULL - && (h->toc_section->flags & SEC_MARK) == 0) - { - if (! xcoff_mark (info, h->toc_section)) - return false; - } - - return true; -} - -/* The mark phase of garbage collection. For a given section, mark - it, and all the sections which define symbols to which it refers. - Because this function needs to look at the relocs, we also count - the number of relocs which need to be copied into the .loader - section. */ - -static boolean -xcoff_mark (info, sec) - struct bfd_link_info *info; - asection *sec; -{ - if (bfd_is_abs_section (sec) - || (sec->flags & SEC_MARK) != 0) - return true; - - sec->flags |= SEC_MARK; - - if (sec->owner->xvec == info->hash->creator - && coff_section_data (sec->owner, sec) != NULL - && xcoff_section_data (sec->owner, sec) != NULL) - { - register struct xcoff_link_hash_entry **hp, **hpend; - struct internal_reloc *rel, *relend; - - /* Mark all the symbols in this section. */ - - hp = (obj_xcoff_sym_hashes (sec->owner) - + xcoff_section_data (sec->owner, sec)->first_symndx); - hpend = (obj_xcoff_sym_hashes (sec->owner) - + xcoff_section_data (sec->owner, sec)->last_symndx); - for (; hp < hpend; hp++) - { - register struct xcoff_link_hash_entry *h; - - h = *hp; - if (h != NULL - && (h->flags & XCOFF_MARK) == 0) - { - if (! xcoff_mark_symbol (info, h)) - return false; - } - } - - /* Look through the section relocs. */ - - if ((sec->flags & SEC_RELOC) != 0 - && sec->reloc_count > 0) - { - rel = xcoff_read_internal_relocs (sec->owner, sec, true, - (bfd_byte *) NULL, false, - (struct internal_reloc *) NULL); - if (rel == NULL) - return false; - relend = rel + sec->reloc_count; - for (; rel < relend; rel++) - { - asection *rsec; - struct xcoff_link_hash_entry *h; - - if ((unsigned int) rel->r_symndx - > obj_raw_syment_count (sec->owner)) - continue; - - h = obj_xcoff_sym_hashes (sec->owner)[rel->r_symndx]; - if (h != NULL - && (h->flags & XCOFF_MARK) == 0) - { - if (! xcoff_mark_symbol (info, h)) - return false; - } - - rsec = xcoff_data (sec->owner)->csects[rel->r_symndx]; - if (rsec != NULL - && (rsec->flags & SEC_MARK) == 0) - { - if (! xcoff_mark (info, rsec)) - return false; - } - - /* See if this reloc needs to be copied into the .loader - section. */ - switch (rel->r_type) - { - default: - if (h == NULL - || h->root.type == bfd_link_hash_defined - || h->root.type == bfd_link_hash_defweak - || h->root.type == bfd_link_hash_common - || ((h->flags & XCOFF_CALLED) != 0 - && (h->root.type == bfd_link_hash_undefined - || h->root.type == bfd_link_hash_undefweak) - && h->root.root.string[0] == '.' - && h->descriptor != NULL - && ((h->descriptor->flags & XCOFF_DEF_DYNAMIC) != 0 - || ((h->descriptor->flags & XCOFF_IMPORT) != 0 - && (h->descriptor->flags - & XCOFF_DEF_REGULAR) == 0)))) - break; - /* Fall through. */ - case R_POS: - case R_NEG: - case R_RL: - case R_RLA: - ++xcoff_hash_table (info)->ldrel_count; - if (h != NULL) - h->flags |= XCOFF_LDREL; - break; - case R_TOC: - case R_GL: - case R_TCL: - case R_TRL: - case R_TRLA: - /* We should never need a .loader reloc for a TOC - relative reloc. */ - break; - } - } - - if (! info->keep_memory - && coff_section_data (sec->owner, sec) != NULL - && coff_section_data (sec->owner, sec)->relocs != NULL - && ! coff_section_data (sec->owner, sec)->keep_relocs) - { - free (coff_section_data (sec->owner, sec)->relocs); - coff_section_data (sec->owner, sec)->relocs = NULL; - } - } - } - - return true; -} - -/* The sweep phase of garbage collection. Remove all garbage - sections. */ - -static void -xcoff_sweep (info) - struct bfd_link_info *info; -{ - bfd *sub; - - for (sub = info->input_bfds; sub != NULL; sub = sub->link_next) - { - asection *o; - - for (o = sub->sections; o != NULL; o = o->next) - { - if ((o->flags & SEC_MARK) == 0) - { - /* Keep all sections from non-XCOFF input files. Keep - special sections. Keep .debug sections for the - moment. */ - if (sub->xvec != info->hash->creator - || o == xcoff_hash_table (info)->debug_section - || o == xcoff_hash_table (info)->loader_section - || o == xcoff_hash_table (info)->linkage_section - || o == xcoff_hash_table (info)->toc_section - || o == xcoff_hash_table (info)->descriptor_section - || strcmp (o->name, ".debug") == 0) - o->flags |= SEC_MARK; - else - { - o->_raw_size = 0; - o->reloc_count = 0; - o->lineno_count = 0; - } - } - } - } -} - -/* Record the number of elements in a set. This is used to output the - correct csect length. */ - -boolean -bfd_xcoff_link_record_set (output_bfd, info, harg, size) - bfd *output_bfd; - struct bfd_link_info *info; - struct bfd_link_hash_entry *harg; - bfd_size_type size; -{ - struct xcoff_link_hash_entry *h = (struct xcoff_link_hash_entry *) harg; - struct xcoff_link_size_list *n; - - if (! XCOFF_XVECP (output_bfd->xvec)) - return true; - - /* This will hardly ever be called. I don't want to burn four bytes - per global symbol, so instead the size is kept on a linked list - attached to the hash table. */ - - n = ((struct xcoff_link_size_list *) - bfd_alloc (output_bfd, sizeof (struct xcoff_link_size_list))); - if (n == NULL) - return false; - n->next = xcoff_hash_table (info)->size_list; - n->h = h; - n->size = size; - xcoff_hash_table (info)->size_list = n; - - h->flags |= XCOFF_HAS_SIZE; - - return true; -} - -/* Import a symbol. */ - -boolean -bfd_xcoff_import_symbol (output_bfd, info, harg, val, imppath, impfile, - impmember) - bfd *output_bfd; - struct bfd_link_info *info; - struct bfd_link_hash_entry *harg; - bfd_vma val; - const char *imppath; - const char *impfile; - const char *impmember; -{ - struct xcoff_link_hash_entry *h = (struct xcoff_link_hash_entry *) harg; - - if (! XCOFF_XVECP (output_bfd->xvec)) - return true; - - /* A symbol name which starts with a period is the code for a - function. If the symbol is undefined, then add an undefined - symbol for the function descriptor, and import that instead. */ - if (h->root.root.string[0] == '.' - && h->root.type == bfd_link_hash_undefined - && val == (bfd_vma) -1) - { - struct xcoff_link_hash_entry *hds; - - hds = h->descriptor; - if (hds == NULL) - { - hds = xcoff_link_hash_lookup (xcoff_hash_table (info), - h->root.root.string + 1, - true, false, true); - if (hds == NULL) - return false; - if (hds->root.type == bfd_link_hash_new) - { - hds->root.type = bfd_link_hash_undefined; - hds->root.u.undef.abfd = h->root.u.undef.abfd; - } - hds->flags |= XCOFF_DESCRIPTOR; - BFD_ASSERT ((hds->flags & XCOFF_CALLED) == 0 - && (h->flags & XCOFF_DESCRIPTOR) == 0); - hds->descriptor = h; - h->descriptor = hds; - } - - /* Now, if the descriptor is undefined, import the descriptor - rather than the symbol we were told to import. FIXME: Is - this correct in all cases? */ - if (hds->root.type == bfd_link_hash_undefined) - h = hds; - } - - h->flags |= XCOFF_IMPORT; - - if (val != (bfd_vma) -1) - { - if (h->root.type == bfd_link_hash_defined - && (! bfd_is_abs_section (h->root.u.def.section) - || h->root.u.def.value != val)) - { - if (! ((*info->callbacks->multiple_definition) - (info, h->root.root.string, h->root.u.def.section->owner, - h->root.u.def.section, h->root.u.def.value, - output_bfd, bfd_abs_section_ptr, val))) - return false; - } - - h->root.type = bfd_link_hash_defined; - h->root.u.def.section = bfd_abs_section_ptr; - h->root.u.def.value = val; - } - - /* We overload the ldindx field to hold the l_ifile value for this - symbol. */ - BFD_ASSERT (h->ldsym == NULL); - BFD_ASSERT ((h->flags & XCOFF_BUILT_LDSYM) == 0); - if (imppath == NULL) - h->ldindx = -1; - else - { - unsigned int c; - struct xcoff_import_file **pp; - - /* We start c at 1 because the first entry in the import list is - reserved for the library search path. */ - for (pp = &xcoff_hash_table (info)->imports, c = 1; - *pp != NULL; - pp = &(*pp)->next, ++c) - { - if (strcmp ((*pp)->path, imppath) == 0 - && strcmp ((*pp)->file, impfile) == 0 - && strcmp ((*pp)->member, impmember) == 0) - break; - } - - if (*pp == NULL) - { - struct xcoff_import_file *n; - - n = ((struct xcoff_import_file *) - bfd_alloc (output_bfd, sizeof (struct xcoff_import_file))); - if (n == NULL) - return false; - n->next = NULL; - n->path = imppath; - n->file = impfile; - n->member = impmember; - *pp = n; - } - - h->ldindx = c; - } - - return true; -} - -/* Export a symbol. */ - -boolean -bfd_xcoff_export_symbol (output_bfd, info, harg, syscall) - bfd *output_bfd; - struct bfd_link_info *info; - struct bfd_link_hash_entry *harg; - boolean syscall ATTRIBUTE_UNUSED; -{ - struct xcoff_link_hash_entry *h = (struct xcoff_link_hash_entry *) harg; - - if (! XCOFF_XVECP (output_bfd->xvec)) - return true; - - h->flags |= XCOFF_EXPORT; - - /* FIXME: I'm not at all sure what syscall is supposed to mean, so - I'm just going to ignore it until somebody explains it. */ - - /* See if this is a function descriptor. It may be one even though - it is not so marked. */ - if ((h->flags & XCOFF_DESCRIPTOR) == 0 - && h->root.root.string[0] != '.') - { - char *fnname; - struct xcoff_link_hash_entry *hfn; - - fnname = (char *) bfd_malloc (strlen (h->root.root.string) + 2); - if (fnname == NULL) - return false; - fnname[0] = '.'; - strcpy (fnname + 1, h->root.root.string); - hfn = xcoff_link_hash_lookup (xcoff_hash_table (info), - fnname, false, false, true); - free (fnname); - if (hfn != NULL - && hfn->smclas == XMC_PR - && (hfn->root.type == bfd_link_hash_defined - || hfn->root.type == bfd_link_hash_defweak)) - { - h->flags |= XCOFF_DESCRIPTOR; - h->descriptor = hfn; - hfn->descriptor = h; - } - } - - /* Make sure we don't garbage collect this symbol. */ - if (! xcoff_mark_symbol (info, h)) - return false; - - /* If this is a function descriptor, make sure we don't garbage - collect the associated function code. We normally don't have to - worry about this, because the descriptor will be attached to a - section with relocs, but if we are creating the descriptor - ourselves those relocs will not be visible to the mark code. */ - if ((h->flags & XCOFF_DESCRIPTOR) != 0) - { - if (! xcoff_mark_symbol (info, h->descriptor)) - return false; - } - - return true; -} - -/* Count a reloc against a symbol. This is called for relocs - generated by the linker script, typically for global constructors - and destructors. */ - -boolean -bfd_xcoff_link_count_reloc (output_bfd, info, name) - bfd *output_bfd; - struct bfd_link_info *info; - const char *name; -{ - struct xcoff_link_hash_entry *h; - - if (! XCOFF_XVECP (output_bfd->xvec)) - return true; - - h = ((struct xcoff_link_hash_entry *) - bfd_wrapped_link_hash_lookup (output_bfd, info, name, false, false, - false)); - if (h == NULL) - { - (*_bfd_error_handler) (_("%s: no such symbol"), name); - bfd_set_error (bfd_error_no_symbols); - return false; - } - - h->flags |= XCOFF_REF_REGULAR | XCOFF_LDREL; - ++xcoff_hash_table (info)->ldrel_count; - - /* Mark the symbol to avoid garbage collection. */ - if (! xcoff_mark_symbol (info, h)) - return false; - - return true; -} - -/* This function is called for each symbol to which the linker script - assigns a value. */ - -boolean -bfd_xcoff_record_link_assignment (output_bfd, info, name) - bfd *output_bfd; - struct bfd_link_info *info; - const char *name; -{ - struct xcoff_link_hash_entry *h; - - if (! XCOFF_XVECP (output_bfd->xvec)) - return true; - - h = xcoff_link_hash_lookup (xcoff_hash_table (info), name, true, true, - false); - if (h == NULL) - return false; - - h->flags |= XCOFF_DEF_REGULAR; - - return true; -} - -/* This structure is used to pass information through - xcoff_link_hash_traverse. */ - -struct xcoff_loader_info -{ - /* Set if a problem occurred. */ - boolean failed; - /* Output BFD. */ - bfd *output_bfd; - /* Link information structure. */ - struct bfd_link_info *info; - /* Whether all defined symbols should be exported. */ - boolean export_defineds; - /* Number of ldsym structures. */ - size_t ldsym_count; - /* Size of string table. */ - size_t string_size; - /* String table. */ - bfd_byte *strings; - /* Allocated size of string table. */ - size_t string_alc; -}; - -/* Build the .loader section. This is called by the XCOFF linker - emulation before_allocation routine. We must set the size of the - .loader section before the linker lays out the output file. - LIBPATH is the library path to search for shared objects; this is - normally built from the -L arguments passed to the linker. ENTRY - is the name of the entry point symbol (the -e linker option). - FILE_ALIGN is the alignment to use for sections within the file - (the -H linker option). MAXSTACK is the maximum stack size (the - -bmaxstack linker option). MAXDATA is the maximum data size (the - -bmaxdata linker option). GC is whether to do garbage collection - (the -bgc linker option). MODTYPE is the module type (the - -bmodtype linker option). TEXTRO is whether the text section must - be read only (the -btextro linker option). EXPORT_DEFINEDS is - whether all defined symbols should be exported (the -unix linker - option). SPECIAL_SECTIONS is set by this routine to csects with - magic names like _end. */ - -boolean -bfd_xcoff_size_dynamic_sections (output_bfd, info, libpath, entry, - file_align, maxstack, maxdata, gc, - modtype, textro, export_defineds, - special_sections) - bfd *output_bfd; - struct bfd_link_info *info; - const char *libpath; - const char *entry; - unsigned long file_align; - unsigned long maxstack; - unsigned long maxdata; - boolean gc; - int modtype; - boolean textro; - boolean export_defineds; - asection **special_sections; -{ - struct xcoff_link_hash_entry *hentry; - asection *lsec; - struct xcoff_loader_info ldinfo; - int i; - size_t impsize, impcount; - struct xcoff_import_file *fl; - struct internal_ldhdr *ldhdr; - bfd_size_type stoff; - register char *out; - asection *sec; - bfd *sub; - struct bfd_strtab_hash *debug_strtab; - bfd_byte *debug_contents = NULL; - - if (! XCOFF_XVECP (output_bfd->xvec)) - { - for (i = 0; i < 6; i++) - special_sections[i] = NULL; - return true; - } - - ldinfo.failed = false; - ldinfo.output_bfd = output_bfd; - ldinfo.info = info; - ldinfo.export_defineds = export_defineds; - ldinfo.ldsym_count = 0; - ldinfo.string_size = 0; - ldinfo.strings = NULL; - ldinfo.string_alc = 0; - - xcoff_data (output_bfd)->maxstack = maxstack; - xcoff_data (output_bfd)->maxdata = maxdata; - xcoff_data (output_bfd)->modtype = modtype; - - xcoff_hash_table (info)->file_align = file_align; - xcoff_hash_table (info)->textro = textro; - - if (entry == NULL) - hentry = NULL; - else - { - hentry = xcoff_link_hash_lookup (xcoff_hash_table (info), entry, - false, false, true); - if (hentry != NULL) - hentry->flags |= XCOFF_ENTRY; - } - - /* Garbage collect unused sections. */ - if (info->relocateable - || ! gc - || hentry == NULL - || (hentry->root.type != bfd_link_hash_defined - && hentry->root.type != bfd_link_hash_defweak)) - { - gc = false; - xcoff_hash_table (info)->gc = false; - - /* We still need to call xcoff_mark, in order to set ldrel_count - correctly. */ - for (sub = info->input_bfds; sub != NULL; sub = sub->link_next) - { - asection *o; - - for (o = sub->sections; o != NULL; o = o->next) - { - if ((o->flags & SEC_MARK) == 0) - { - if (! xcoff_mark (info, o)) - goto error_return; - } - } - } - } - else - { - if (! xcoff_mark (info, hentry->root.u.def.section)) - goto error_return; - xcoff_sweep (info); - xcoff_hash_table (info)->gc = true; - } - - /* Return special sections to the caller. */ - for (i = 0; i < 6; i++) - { - asection *sec; - - sec = xcoff_hash_table (info)->special_sections[i]; - if (sec != NULL - && gc - && (sec->flags & SEC_MARK) == 0) - sec = NULL; - special_sections[i] = sec; - } - - if (info->input_bfds == NULL) - { - /* I'm not sure what to do in this bizarre case. */ - return true; - } - - xcoff_link_hash_traverse (xcoff_hash_table (info), xcoff_build_ldsyms, - (PTR) &ldinfo); - if (ldinfo.failed) - goto error_return; - - /* Work out the size of the import file names. Each import file ID - consists of three null terminated strings: the path, the file - name, and the archive member name. The first entry in the list - of names is the path to use to find objects, which the linker has - passed in as the libpath argument. For some reason, the path - entry in the other import file names appears to always be empty. */ - impsize = strlen (libpath) + 3; - impcount = 1; - for (fl = xcoff_hash_table (info)->imports; fl != NULL; fl = fl->next) - { - ++impcount; - impsize += (strlen (fl->path) - + strlen (fl->file) - + strlen (fl->member) - + 3); - } - - /* Set up the .loader section header. */ - ldhdr = &xcoff_hash_table (info)->ldhdr; - ldhdr->l_version = 1; - ldhdr->l_nsyms = ldinfo.ldsym_count; - ldhdr->l_nreloc = xcoff_hash_table (info)->ldrel_count; - ldhdr->l_istlen = impsize; - ldhdr->l_nimpid = impcount; - ldhdr->l_impoff = (LDHDRSZ - + ldhdr->l_nsyms * LDSYMSZ - + ldhdr->l_nreloc * LDRELSZ); - ldhdr->l_stlen = ldinfo.string_size; - stoff = ldhdr->l_impoff + impsize; - if (ldinfo.string_size == 0) - ldhdr->l_stoff = 0; - else - ldhdr->l_stoff = stoff; - - /* We now know the final size of the .loader section. Allocate - space for it. */ - lsec = xcoff_hash_table (info)->loader_section; - lsec->_raw_size = stoff + ldhdr->l_stlen; - lsec->contents = (bfd_byte *) bfd_zalloc (output_bfd, lsec->_raw_size); - if (lsec->contents == NULL) - goto error_return; - - /* Set up the header. */ - xcoff_swap_ldhdr_out (output_bfd, ldhdr, - (struct external_ldhdr *) lsec->contents); - - /* Set up the import file names. */ - out = (char *) lsec->contents + ldhdr->l_impoff; - strcpy (out, libpath); - out += strlen (libpath) + 1; - *out++ = '\0'; - *out++ = '\0'; - for (fl = xcoff_hash_table (info)->imports; fl != NULL; fl = fl->next) - { - register const char *s; - - s = fl->path; - while ((*out++ = *s++) != '\0') - ; - s = fl->file; - while ((*out++ = *s++) != '\0') - ; - s = fl->member; - while ((*out++ = *s++) != '\0') - ; - } - - BFD_ASSERT ((bfd_size_type) ((bfd_byte *) out - lsec->contents) == stoff); - - /* Set up the symbol string table. */ - if (ldinfo.string_size > 0) - { - memcpy (out, ldinfo.strings, ldinfo.string_size); - free (ldinfo.strings); - ldinfo.strings = NULL; - } - - /* We can't set up the symbol table or the relocs yet, because we - don't yet know the final position of the various sections. The - .loader symbols are written out when the corresponding normal - symbols are written out in xcoff_link_input_bfd or - xcoff_write_global_symbol. The .loader relocs are written out - when the corresponding normal relocs are handled in - xcoff_link_input_bfd. */ - - /* Allocate space for the magic sections. */ - sec = xcoff_hash_table (info)->linkage_section; - if (sec->_raw_size > 0) - { - sec->contents = (bfd_byte *) bfd_zalloc (output_bfd, sec->_raw_size); - if (sec->contents == NULL) - goto error_return; - } - sec = xcoff_hash_table (info)->toc_section; - if (sec->_raw_size > 0) - { - sec->contents = (bfd_byte *) bfd_zalloc (output_bfd, sec->_raw_size); - if (sec->contents == NULL) - goto error_return; - } - sec = xcoff_hash_table (info)->descriptor_section; - if (sec->_raw_size > 0) - { - sec->contents = (bfd_byte *) bfd_zalloc (output_bfd, sec->_raw_size); - if (sec->contents == NULL) - goto error_return; - } - - /* Now that we've done garbage collection, figure out the contents - of the .debug section. */ - debug_strtab = xcoff_hash_table (info)->debug_strtab; - - for (sub = info->input_bfds; sub != NULL; sub = sub->link_next) - { - asection *subdeb; - bfd_size_type symcount; - unsigned long *debug_index; - asection **csectpp; - bfd_byte *esym, *esymend; - bfd_size_type symesz; - - if (sub->xvec != info->hash->creator) - continue; - subdeb = bfd_get_section_by_name (sub, ".debug"); - if (subdeb == NULL || subdeb->_raw_size == 0) - continue; - - if (info->strip == strip_all - || info->strip == strip_debugger - || info->discard == discard_all) - { - subdeb->_raw_size = 0; - continue; - } - - if (! _bfd_coff_get_external_symbols (sub)) - goto error_return; - - symcount = obj_raw_syment_count (sub); - debug_index = ((unsigned long *) - bfd_zalloc (sub, symcount * sizeof (unsigned long))); - if (debug_index == NULL) - goto error_return; - xcoff_data (sub)->debug_indices = debug_index; - - /* Grab the contents of the .debug section. We use malloc and - copy the names into the debug stringtab, rather than - bfd_alloc, because I expect that, when linking many files - together, many of the strings will be the same. Storing the - strings in the hash table should save space in this case. */ - debug_contents = (bfd_byte *) bfd_malloc (subdeb->_raw_size); - if (debug_contents == NULL) - goto error_return; - if (! bfd_get_section_contents (sub, subdeb, (PTR) debug_contents, - (file_ptr) 0, subdeb->_raw_size)) - goto error_return; - - csectpp = xcoff_data (sub)->csects; - - symesz = bfd_coff_symesz (sub); - esym = (bfd_byte *) obj_coff_external_syms (sub); - esymend = esym + symcount * symesz; - while (esym < esymend) - { - struct internal_syment sym; - - bfd_coff_swap_sym_in (sub, (PTR) esym, (PTR) &sym); - - *debug_index = (unsigned long) -1; - - if (sym._n._n_n._n_zeroes == 0 - && *csectpp != NULL - && (! gc - || ((*csectpp)->flags & SEC_MARK) != 0 - || *csectpp == bfd_abs_section_ptr) - && bfd_coff_symname_in_debug (sub, &sym)) - { - char *name; - bfd_size_type indx; - - name = (char *) debug_contents + sym._n._n_n._n_offset; - indx = _bfd_stringtab_add (debug_strtab, name, true, true); - if (indx == (bfd_size_type) -1) - goto error_return; - *debug_index = indx; - } - - esym += (sym.n_numaux + 1) * symesz; - csectpp += sym.n_numaux + 1; - debug_index += sym.n_numaux + 1; - } - - free (debug_contents); - debug_contents = NULL; - - /* Clear the size of subdeb, so that it is not included directly - in the output file. */ - subdeb->_raw_size = 0; - - if (! info->keep_memory) - { - if (! _bfd_coff_free_symbols (sub)) - goto error_return; - } - } - - if (info->strip != strip_all) - xcoff_hash_table (info)->debug_section->_raw_size = - _bfd_stringtab_size (debug_strtab); - - return true; - - error_return: - if (ldinfo.strings != NULL) - free (ldinfo.strings); - if (debug_contents != NULL) - free (debug_contents); - return false; -} - -/* Add a symbol to the .loader symbols, if necessary. */ - -static boolean -xcoff_build_ldsyms (h, p) - struct xcoff_link_hash_entry *h; - PTR p; -{ - struct xcoff_loader_info *ldinfo = (struct xcoff_loader_info *) p; - size_t len; - - /* If this is a final link, and the symbol was defined as a common - symbol in a regular object file, and there was no definition in - any dynamic object, then the linker will have allocated space for - the symbol in a common section but the XCOFF_DEF_REGULAR flag - will not have been set. */ - if (h->root.type == bfd_link_hash_defined - && (h->flags & XCOFF_DEF_REGULAR) == 0 - && (h->flags & XCOFF_REF_REGULAR) != 0 - && (h->flags & XCOFF_DEF_DYNAMIC) == 0 - && (bfd_is_abs_section (h->root.u.def.section) - || (h->root.u.def.section->owner->flags & DYNAMIC) == 0)) - h->flags |= XCOFF_DEF_REGULAR; - - /* If all defined symbols should be exported, mark them now. We - don't want to export the actual functions, just the function - descriptors. */ - if (ldinfo->export_defineds - && (h->flags & XCOFF_DEF_REGULAR) != 0 - && h->root.root.string[0] != '.') - { - boolean export; - - /* We don't export a symbol which is being defined by an object - included from an archive which contains a shared object. The - rationale is that if an archive contains both an unshared and - a shared object, then there must be some reason that the - unshared object is unshared, and we don't want to start - providing a shared version of it. In particular, this solves - a bug involving the _savefNN set of functions. gcc will call - those functions without providing a slot to restore the TOC, - so it is essential that these functions be linked in directly - and not from a shared object, which means that a shared - object which also happens to link them in must not export - them. This is confusing, but I haven't been able to think of - a different approach. Note that the symbols can, of course, - be exported explicitly. */ - export = true; - if ((h->root.type == bfd_link_hash_defined - || h->root.type == bfd_link_hash_defweak) - && h->root.u.def.section->owner != NULL - && h->root.u.def.section->owner->my_archive != NULL) - { - bfd *arbfd, *member; - - arbfd = h->root.u.def.section->owner->my_archive; - member = bfd_openr_next_archived_file (arbfd, (bfd *) NULL); - while (member != NULL) - { - if ((member->flags & DYNAMIC) != 0) - { - export = false; - break; - } - member = bfd_openr_next_archived_file (arbfd, member); - } - } - - if (export) - h->flags |= XCOFF_EXPORT; - } - - /* We don't want to garbage collect symbols which are not defined in - XCOFF files. This is a convenient place to mark them. */ - if (xcoff_hash_table (ldinfo->info)->gc - && (h->flags & XCOFF_MARK) == 0 - && (h->root.type == bfd_link_hash_defined - || h->root.type == bfd_link_hash_defweak) - && (h->root.u.def.section->owner == NULL - || (h->root.u.def.section->owner->xvec - != ldinfo->info->hash->creator))) - h->flags |= XCOFF_MARK; - - /* If this symbol is called and defined in a dynamic object, or it - is imported, then we need to set up global linkage code for it. - (Unless we did garbage collection and we didn't need this - symbol.) */ - if ((h->flags & XCOFF_CALLED) != 0 - && (h->root.type == bfd_link_hash_undefined - || h->root.type == bfd_link_hash_undefweak) - && h->root.root.string[0] == '.' - && h->descriptor != NULL - && ((h->descriptor->flags & XCOFF_DEF_DYNAMIC) != 0 - || ((h->descriptor->flags & XCOFF_IMPORT) != 0 - && (h->descriptor->flags & XCOFF_DEF_REGULAR) == 0)) - && (! xcoff_hash_table (ldinfo->info)->gc - || (h->flags & XCOFF_MARK) != 0)) - { - asection *sec; - struct xcoff_link_hash_entry *hds; - - sec = xcoff_hash_table (ldinfo->info)->linkage_section; - h->root.type = bfd_link_hash_defined; - h->root.u.def.section = sec; - h->root.u.def.value = sec->_raw_size; - h->smclas = XMC_GL; - h->flags |= XCOFF_DEF_REGULAR; - sec->_raw_size += XCOFF_GLINK_SIZE; - - /* The global linkage code requires a TOC entry for the - descriptor. */ - hds = h->descriptor; - BFD_ASSERT ((hds->root.type == bfd_link_hash_undefined - || hds->root.type == bfd_link_hash_undefweak) - && (hds->flags & XCOFF_DEF_REGULAR) == 0); - hds->flags |= XCOFF_MARK; - if (hds->toc_section == NULL) - { - hds->toc_section = xcoff_hash_table (ldinfo->info)->toc_section; - hds->u.toc_offset = hds->toc_section->_raw_size; - hds->toc_section->_raw_size += 4; - ++xcoff_hash_table (ldinfo->info)->ldrel_count; - ++hds->toc_section->reloc_count; - hds->indx = -2; - hds->flags |= XCOFF_SET_TOC | XCOFF_LDREL; - - /* We need to call xcoff_build_ldsyms recursively here, - because we may already have passed hds on the traversal. */ - xcoff_build_ldsyms (hds, p); - } - } - - /* If this symbol is exported, but not defined, we need to try to - define it. */ - if ((h->flags & XCOFF_EXPORT) != 0 - && (h->flags & XCOFF_IMPORT) == 0 - && (h->flags & XCOFF_DEF_REGULAR) == 0 - && (h->flags & XCOFF_DEF_DYNAMIC) == 0 - && (h->root.type == bfd_link_hash_undefined - || h->root.type == bfd_link_hash_undefweak)) - { - if ((h->flags & XCOFF_DESCRIPTOR) != 0 - && (h->descriptor->root.type == bfd_link_hash_defined - || h->descriptor->root.type == bfd_link_hash_defweak)) - { - asection *sec; - - /* This is an undefined function descriptor associated with - a defined entry point. We can build up a function - descriptor ourselves. Believe it or not, the AIX linker - actually does this, and there are cases where we need to - do it as well. */ - sec = xcoff_hash_table (ldinfo->info)->descriptor_section; - h->root.type = bfd_link_hash_defined; - h->root.u.def.section = sec; - h->root.u.def.value = sec->_raw_size; - h->smclas = XMC_DS; - h->flags |= XCOFF_DEF_REGULAR; - sec->_raw_size += 12; - - /* A function descriptor uses two relocs: one for the - associated code, and one for the TOC address. */ - xcoff_hash_table (ldinfo->info)->ldrel_count += 2; - sec->reloc_count += 2; - - /* We handle writing out the contents of the descriptor in - xcoff_write_global_symbol. */ - } - else - { - (*_bfd_error_handler) - (_("warning: attempt to export undefined symbol `%s'"), - h->root.root.string); - h->ldsym = NULL; - return true; - } - } - - /* If this is still a common symbol, and it wasn't garbage - collected, we need to actually allocate space for it in the .bss - section. */ - if (h->root.type == bfd_link_hash_common - && (! xcoff_hash_table (ldinfo->info)->gc - || (h->flags & XCOFF_MARK) != 0) - && h->root.u.c.p->section->_raw_size == 0) - { - BFD_ASSERT (bfd_is_com_section (h->root.u.c.p->section)); - h->root.u.c.p->section->_raw_size = h->root.u.c.size; - } - - /* We need to add a symbol to the .loader section if it is mentioned - in a reloc which we are copying to the .loader section and it was - not defined or common, or if it is the entry point, or if it is - being exported. */ - - if (((h->flags & XCOFF_LDREL) == 0 - || h->root.type == bfd_link_hash_defined - || h->root.type == bfd_link_hash_defweak - || h->root.type == bfd_link_hash_common) - && (h->flags & XCOFF_ENTRY) == 0 - && (h->flags & XCOFF_EXPORT) == 0) - { - h->ldsym = NULL; - return true; - } - - /* We don't need to add this symbol if we did garbage collection and - we did not mark this symbol. */ - if (xcoff_hash_table (ldinfo->info)->gc - && (h->flags & XCOFF_MARK) == 0) - { - h->ldsym = NULL; - return true; - } - - /* We may have already processed this symbol due to the recursive - call above. */ - if ((h->flags & XCOFF_BUILT_LDSYM) != 0) - return true; - - /* We need to add this symbol to the .loader symbols. */ - - BFD_ASSERT (h->ldsym == NULL); - h->ldsym = ((struct internal_ldsym *) - bfd_zalloc (ldinfo->output_bfd, - sizeof (struct internal_ldsym))); - if (h->ldsym == NULL) - { - ldinfo->failed = true; - return false; - } - - if ((h->flags & XCOFF_IMPORT) != 0) - h->ldsym->l_ifile = h->ldindx; - - /* The first 3 symbol table indices are reserved to indicate the - sections. */ - h->ldindx = ldinfo->ldsym_count + 3; - - ++ldinfo->ldsym_count; - - len = strlen (h->root.root.string); - if (len <= SYMNMLEN) - strncpy (h->ldsym->_l._l_name, h->root.root.string, SYMNMLEN); - else - { - if (ldinfo->string_size + len + 3 > ldinfo->string_alc) - { - size_t newalc; - bfd_byte *newstrings; - - newalc = ldinfo->string_alc * 2; - if (newalc == 0) - newalc = 32; - while (ldinfo->string_size + len + 3 > newalc) - newalc *= 2; - - newstrings = ((bfd_byte *) - bfd_realloc ((PTR) ldinfo->strings, newalc)); - if (newstrings == NULL) - { - ldinfo->failed = true; - return false; - } - ldinfo->string_alc = newalc; - ldinfo->strings = newstrings; - } - - bfd_put_16 (ldinfo->output_bfd, len + 1, - ldinfo->strings + ldinfo->string_size); - strcpy (ldinfo->strings + ldinfo->string_size + 2, h->root.root.string); - h->ldsym->_l._l_l._l_zeroes = 0; - h->ldsym->_l._l_l._l_offset = ldinfo->string_size + 2; - ldinfo->string_size += len + 3; - } - - h->flags |= XCOFF_BUILT_LDSYM; - - return true; -} - -/* Do the final link step. */ - -boolean -_bfd_xcoff_bfd_final_link (abfd, info) - bfd *abfd; - struct bfd_link_info *info; -{ - bfd_size_type symesz; - struct xcoff_final_link_info finfo; - asection *o; - struct bfd_link_order *p; - size_t max_contents_size; - size_t max_sym_count; - size_t max_lineno_count; - size_t max_reloc_count; - size_t max_output_reloc_count; - file_ptr rel_filepos; - unsigned int relsz; - file_ptr line_filepos; - unsigned int linesz; - bfd *sub; - bfd_byte *external_relocs = NULL; - char strbuf[STRING_SIZE_SIZE]; - - if (info->shared) - abfd->flags |= DYNAMIC; - - symesz = bfd_coff_symesz (abfd); - - finfo.info = info; - finfo.output_bfd = abfd; - finfo.strtab = NULL; - finfo.section_info = NULL; - finfo.last_file_index = -1; - finfo.toc_symindx = -1; - finfo.internal_syms = NULL; - finfo.sym_indices = NULL; - finfo.outsyms = NULL; - finfo.linenos = NULL; - finfo.contents = NULL; - finfo.external_relocs = NULL; - - finfo.ldsym = ((struct external_ldsym *) - (xcoff_hash_table (info)->loader_section->contents - + LDHDRSZ)); - finfo.ldrel = ((struct external_ldrel *) - (xcoff_hash_table (info)->loader_section->contents - + LDHDRSZ - + xcoff_hash_table (info)->ldhdr.l_nsyms * LDSYMSZ)); - - xcoff_data (abfd)->coff.link_info = info; - - finfo.strtab = _bfd_stringtab_init (); - if (finfo.strtab == NULL) - goto error_return; - - /* Count the line number and relocation entries required for the - output file. Determine a few maximum sizes. */ - max_contents_size = 0; - max_lineno_count = 0; - max_reloc_count = 0; - for (o = abfd->sections; o != NULL; o = o->next) - { - o->reloc_count = 0; - o->lineno_count = 0; - for (p = o->link_order_head; p != NULL; p = p->next) - { - if (p->type == bfd_indirect_link_order) - { - asection *sec; - - sec = p->u.indirect.section; - - /* Mark all sections which are to be included in the - link. This will normally be every section. We need - to do this so that we can identify any sections which - the linker has decided to not include. */ - sec->linker_mark = true; - - if (info->strip == strip_none - || info->strip == strip_some) - o->lineno_count += sec->lineno_count; - - o->reloc_count += sec->reloc_count; - - if (sec->_raw_size > max_contents_size) - max_contents_size = sec->_raw_size; - if (sec->lineno_count > max_lineno_count) - max_lineno_count = sec->lineno_count; - if (coff_section_data (sec->owner, sec) != NULL - && xcoff_section_data (sec->owner, sec) != NULL - && (xcoff_section_data (sec->owner, sec)->lineno_count - > max_lineno_count)) - max_lineno_count = - xcoff_section_data (sec->owner, sec)->lineno_count; - if (sec->reloc_count > max_reloc_count) - max_reloc_count = sec->reloc_count; - } - else if (p->type == bfd_section_reloc_link_order - || p->type == bfd_symbol_reloc_link_order) - ++o->reloc_count; - } - } - - /* Compute the file positions for all the sections. */ - if (abfd->output_has_begun) - { - if (xcoff_hash_table (info)->file_align != 0) - abort (); - } - else - { - bfd_vma file_align; - - file_align = xcoff_hash_table (info)->file_align; - if (file_align != 0) - { - boolean saw_contents; - int indx; - asection **op; - file_ptr sofar; - - /* Insert .pad sections before every section which has - contents and is loaded, if it is preceded by some other - section which has contents and is loaded. */ - saw_contents = true; - for (op = &abfd->sections; *op != NULL; op = &(*op)->next) - { - if (strcmp ((*op)->name, ".pad") == 0) - saw_contents = false; - else if (((*op)->flags & SEC_HAS_CONTENTS) != 0 - && ((*op)->flags & SEC_LOAD) != 0) - { - if (! saw_contents) - saw_contents = true; - else - { - asection *n, *hold; - - hold = *op; - *op = NULL; - n = bfd_make_section_anyway (abfd, ".pad"); - BFD_ASSERT (*op == n); - n->next = hold; - n->flags = SEC_HAS_CONTENTS; - n->alignment_power = 0; - saw_contents = false; - } - } - } - - /* Reset the section indices after inserting the new - sections. */ - indx = 0; - for (o = abfd->sections; o != NULL; o = o->next) - { - ++indx; - o->target_index = indx; - } - BFD_ASSERT ((unsigned int) indx == abfd->section_count); - - /* Work out appropriate sizes for the .pad sections to force - each section to land on a page boundary. This bit of - code knows what compute_section_file_positions is going - to do. */ - sofar = bfd_coff_filhsz (abfd); - sofar += bfd_coff_aoutsz (abfd); - sofar += abfd->section_count * bfd_coff_scnhsz (abfd); - for (o = abfd->sections; o != NULL; o = o->next) - if (o->reloc_count >= 0xffff || o->lineno_count >= 0xffff) - sofar += bfd_coff_scnhsz (abfd); - - for (o = abfd->sections; o != NULL; o = o->next) - { - if (strcmp (o->name, ".pad") == 0) - { - bfd_vma pageoff; - - BFD_ASSERT (o->_raw_size == 0); - pageoff = sofar & (file_align - 1); - if (pageoff != 0) - { - o->_raw_size = file_align - pageoff; - sofar += file_align - pageoff; - o->flags |= SEC_HAS_CONTENTS; - } - } - else - { - if ((o->flags & SEC_HAS_CONTENTS) != 0) - sofar += BFD_ALIGN (o->_raw_size, - 1 << o->alignment_power); - } - } - } - - if (! bfd_coff_compute_section_file_positions (abfd)) - goto error_return; - } - - /* Allocate space for the pointers we need to keep for the relocs. */ - { - unsigned int i; - - /* We use section_count + 1, rather than section_count, because - the target_index fields are 1 based. */ - finfo.section_info = - ((struct xcoff_link_section_info *) - bfd_malloc ((abfd->section_count + 1) - * sizeof (struct xcoff_link_section_info))); - if (finfo.section_info == NULL) - goto error_return; - for (i = 0; i <= abfd->section_count; i++) - { - finfo.section_info[i].relocs = NULL; - finfo.section_info[i].rel_hashes = NULL; - finfo.section_info[i].toc_rel_hashes = NULL; - } - } - - /* Set the file positions for the relocs. */ - rel_filepos = obj_relocbase (abfd); - relsz = bfd_coff_relsz (abfd); - max_output_reloc_count = 0; - for (o = abfd->sections; o != NULL; o = o->next) - { - if (o->reloc_count == 0) - o->rel_filepos = 0; - else - { - /* A stripped file has no relocs. However, we still - allocate the buffers, so that later code doesn't have to - worry about whether we are stripping or not. */ - if (info->strip == strip_all) - o->rel_filepos = 0; - else - { - o->flags |= SEC_RELOC; - o->rel_filepos = rel_filepos; - rel_filepos += o->reloc_count * relsz; - } - - /* We don't know the indices of global symbols until we have - written out all the local symbols. For each section in - the output file, we keep an array of pointers to hash - table entries. Each entry in the array corresponds to a - reloc. When we find a reloc against a global symbol, we - set the corresponding entry in this array so that we can - fix up the symbol index after we have written out all the - local symbols. - - Because of this problem, we also keep the relocs in - memory until the end of the link. This wastes memory. - We could backpatch the file later, I suppose, although it - would be slow. */ - finfo.section_info[o->target_index].relocs = - ((struct internal_reloc *) - bfd_malloc (o->reloc_count * sizeof (struct internal_reloc))); - finfo.section_info[o->target_index].rel_hashes = - ((struct xcoff_link_hash_entry **) - bfd_malloc (o->reloc_count - * sizeof (struct xcoff_link_hash_entry *))); - if (finfo.section_info[o->target_index].relocs == NULL - || finfo.section_info[o->target_index].rel_hashes == NULL) - goto error_return; - - if (o->reloc_count > max_output_reloc_count) - max_output_reloc_count = o->reloc_count; - } - } - - /* We now know the size of the relocs, so we can determine the file - positions of the line numbers. */ - line_filepos = rel_filepos; - finfo.line_filepos = line_filepos; - linesz = bfd_coff_linesz (abfd); - for (o = abfd->sections; o != NULL; o = o->next) - { - if (o->lineno_count == 0) - o->line_filepos = 0; - else - { - o->line_filepos = line_filepos; - line_filepos += o->lineno_count * linesz; - } - - /* Reset the reloc and lineno counts, so that we can use them to - count the number of entries we have output so far. */ - o->reloc_count = 0; - o->lineno_count = 0; - } - - obj_sym_filepos (abfd) = line_filepos; - - /* Figure out the largest number of symbols in an input BFD. Take - the opportunity to clear the output_has_begun fields of all the - input BFD's. We want at least 6 symbols, since that is the - number which xcoff_write_global_symbol may need. */ - max_sym_count = 6; - for (sub = info->input_bfds; sub != NULL; sub = sub->link_next) - { - size_t sz; - - sub->output_has_begun = false; - sz = obj_raw_syment_count (sub); - if (sz > max_sym_count) - max_sym_count = sz; - } - - /* Allocate some buffers used while linking. */ - finfo.internal_syms = ((struct internal_syment *) - bfd_malloc (max_sym_count - * sizeof (struct internal_syment))); - finfo.sym_indices = (long *) bfd_malloc (max_sym_count * sizeof (long)); - finfo.outsyms = ((bfd_byte *) - bfd_malloc ((size_t) ((max_sym_count + 1) * symesz))); - finfo.linenos = (bfd_byte *) bfd_malloc (max_lineno_count - * bfd_coff_linesz (abfd)); - finfo.contents = (bfd_byte *) bfd_malloc (max_contents_size); - finfo.external_relocs = (bfd_byte *) bfd_malloc (max_reloc_count * relsz); - if ((finfo.internal_syms == NULL && max_sym_count > 0) - || (finfo.sym_indices == NULL && max_sym_count > 0) - || finfo.outsyms == NULL - || (finfo.linenos == NULL && max_lineno_count > 0) - || (finfo.contents == NULL && max_contents_size > 0) - || (finfo.external_relocs == NULL && max_reloc_count > 0)) - goto error_return; - - obj_raw_syment_count (abfd) = 0; - xcoff_data (abfd)->toc = (bfd_vma) -1; - - /* We now know the position of everything in the file, except that - we don't know the size of the symbol table and therefore we don't - know where the string table starts. We just build the string - table in memory as we go along. We process all the relocations - for a single input file at once. */ - for (o = abfd->sections; o != NULL; o = o->next) - { - for (p = o->link_order_head; p != NULL; p = p->next) - { - if (p->type == bfd_indirect_link_order - && p->u.indirect.section->owner->xvec == abfd->xvec) - { - sub = p->u.indirect.section->owner; - if (! sub->output_has_begun) - { - if (! xcoff_link_input_bfd (&finfo, sub)) - goto error_return; - sub->output_has_begun = true; - } - } - else if (p->type == bfd_section_reloc_link_order - || p->type == bfd_symbol_reloc_link_order) - { - if (! xcoff_reloc_link_order (abfd, &finfo, o, p)) - goto error_return; - } - else - { - if (! _bfd_default_link_order (abfd, info, o, p)) - goto error_return; - } - } - } - - /* Free up the buffers used by xcoff_link_input_bfd. */ - - if (finfo.internal_syms != NULL) - { - free (finfo.internal_syms); - finfo.internal_syms = NULL; - } - if (finfo.sym_indices != NULL) - { - free (finfo.sym_indices); - finfo.sym_indices = NULL; - } - if (finfo.linenos != NULL) - { - free (finfo.linenos); - finfo.linenos = NULL; - } - if (finfo.contents != NULL) - { - free (finfo.contents); - finfo.contents = NULL; - } - if (finfo.external_relocs != NULL) - { - free (finfo.external_relocs); - finfo.external_relocs = NULL; - } - - /* The value of the last C_FILE symbol is supposed to be -1. Write - it out again. */ - if (finfo.last_file_index != -1) - { - finfo.last_file.n_value = -1; - bfd_coff_swap_sym_out (abfd, (PTR) &finfo.last_file, - (PTR) finfo.outsyms); - if (bfd_seek (abfd, - (obj_sym_filepos (abfd) - + finfo.last_file_index * symesz), - SEEK_SET) != 0 - || bfd_write (finfo.outsyms, symesz, 1, abfd) != symesz) - goto error_return; - } - - /* Write out all the global symbols which do not come from XCOFF - input files. */ - xcoff_link_hash_traverse (xcoff_hash_table (info), - xcoff_write_global_symbol, - (PTR) &finfo); - - if (finfo.outsyms != NULL) - { - free (finfo.outsyms); - finfo.outsyms = NULL; - } - - /* Now that we have written out all the global symbols, we know the - symbol indices to use for relocs against them, and we can finally - write out the relocs. */ - external_relocs = (bfd_byte *) bfd_malloc (max_output_reloc_count * relsz); - if (external_relocs == NULL && max_output_reloc_count != 0) - goto error_return; - - for (o = abfd->sections; o != NULL; o = o->next) - { - struct internal_reloc *irel; - struct internal_reloc *irelend; - struct xcoff_link_hash_entry **rel_hash; - struct xcoff_toc_rel_hash *toc_rel_hash; - bfd_byte *erel; - - /* A stripped file has no relocs. */ - if (info->strip == strip_all) - { - o->reloc_count = 0; - continue; - } - - if (o->reloc_count == 0) - continue; - - irel = finfo.section_info[o->target_index].relocs; - irelend = irel + o->reloc_count; - rel_hash = finfo.section_info[o->target_index].rel_hashes; - for (; irel < irelend; irel++, rel_hash++, erel += relsz) - { - if (*rel_hash != NULL) - { - if ((*rel_hash)->indx < 0) - { - if (! ((*info->callbacks->unattached_reloc) - (info, (*rel_hash)->root.root.string, - (bfd *) NULL, o, irel->r_vaddr))) - goto error_return; - (*rel_hash)->indx = 0; - } - irel->r_symndx = (*rel_hash)->indx; - } - } - - for (toc_rel_hash = finfo.section_info[o->target_index].toc_rel_hashes; - toc_rel_hash != NULL; - toc_rel_hash = toc_rel_hash->next) - { - if (toc_rel_hash->h->u.toc_indx < 0) - { - if (! ((*info->callbacks->unattached_reloc) - (info, toc_rel_hash->h->root.root.string, - (bfd *) NULL, o, toc_rel_hash->rel->r_vaddr))) - goto error_return; - toc_rel_hash->h->u.toc_indx = 0; - } - toc_rel_hash->rel->r_symndx = toc_rel_hash->h->u.toc_indx; - } - - /* XCOFF requires that the relocs be sorted by address. We tend - to produce them in the order in which their containing csects - appear in the symbol table, which is not necessarily by - address. So we sort them here. There may be a better way to - do this. */ - qsort ((PTR) finfo.section_info[o->target_index].relocs, - o->reloc_count, sizeof (struct internal_reloc), - xcoff_sort_relocs); - - irel = finfo.section_info[o->target_index].relocs; - irelend = irel + o->reloc_count; - erel = external_relocs; - for (; irel < irelend; irel++, rel_hash++, erel += relsz) - bfd_coff_swap_reloc_out (abfd, (PTR) irel, (PTR) erel); - - if (bfd_seek (abfd, o->rel_filepos, SEEK_SET) != 0 - || bfd_write ((PTR) external_relocs, relsz, o->reloc_count, - abfd) != relsz * o->reloc_count) - goto error_return; - } - - if (external_relocs != NULL) - { - free (external_relocs); - external_relocs = NULL; - } - - /* Free up the section information. */ - if (finfo.section_info != NULL) - { - unsigned int i; - - for (i = 0; i < abfd->section_count; i++) - { - if (finfo.section_info[i].relocs != NULL) - free (finfo.section_info[i].relocs); - if (finfo.section_info[i].rel_hashes != NULL) - free (finfo.section_info[i].rel_hashes); - } - free (finfo.section_info); - finfo.section_info = NULL; - } - - /* Write out the loader section contents. */ - BFD_ASSERT ((bfd_byte *) finfo.ldrel - == (xcoff_hash_table (info)->loader_section->contents - + xcoff_hash_table (info)->ldhdr.l_impoff)); - o = xcoff_hash_table (info)->loader_section; - if (! bfd_set_section_contents (abfd, o->output_section, - o->contents, o->output_offset, - o->_raw_size)) - goto error_return; - - /* Write out the magic sections. */ - o = xcoff_hash_table (info)->linkage_section; - if (o->_raw_size > 0 - && ! bfd_set_section_contents (abfd, o->output_section, o->contents, - o->output_offset, o->_raw_size)) - goto error_return; - o = xcoff_hash_table (info)->toc_section; - if (o->_raw_size > 0 - && ! bfd_set_section_contents (abfd, o->output_section, o->contents, - o->output_offset, o->_raw_size)) - goto error_return; - o = xcoff_hash_table (info)->descriptor_section; - if (o->_raw_size > 0 - && ! bfd_set_section_contents (abfd, o->output_section, o->contents, - o->output_offset, o->_raw_size)) - goto error_return; - - /* Write out the string table. */ - if (bfd_seek (abfd, - (obj_sym_filepos (abfd) - + obj_raw_syment_count (abfd) * symesz), - SEEK_SET) != 0) - goto error_return; - bfd_h_put_32 (abfd, - _bfd_stringtab_size (finfo.strtab) + STRING_SIZE_SIZE, - (bfd_byte *) strbuf); - if (bfd_write (strbuf, 1, STRING_SIZE_SIZE, abfd) != STRING_SIZE_SIZE) - goto error_return; - if (! _bfd_stringtab_emit (abfd, finfo.strtab)) - goto error_return; - - _bfd_stringtab_free (finfo.strtab); - - /* Write out the debugging string table. */ - o = xcoff_hash_table (info)->debug_section; - if (o != NULL) - { - struct bfd_strtab_hash *debug_strtab; - - debug_strtab = xcoff_hash_table (info)->debug_strtab; - BFD_ASSERT (o->output_section->_raw_size - o->output_offset - >= _bfd_stringtab_size (debug_strtab)); - if (bfd_seek (abfd, - o->output_section->filepos + o->output_offset, - SEEK_SET) != 0) - goto error_return; - if (! _bfd_stringtab_emit (abfd, debug_strtab)) - goto error_return; - } - - /* Setting bfd_get_symcount to 0 will cause write_object_contents to - not try to write out the symbols. */ - bfd_get_symcount (abfd) = 0; - - return true; - - error_return: - if (finfo.strtab != NULL) - _bfd_stringtab_free (finfo.strtab); - if (finfo.section_info != NULL) - { - unsigned int i; - - for (i = 0; i < abfd->section_count; i++) - { - if (finfo.section_info[i].relocs != NULL) - free (finfo.section_info[i].relocs); - if (finfo.section_info[i].rel_hashes != NULL) - free (finfo.section_info[i].rel_hashes); - } - free (finfo.section_info); - } - if (finfo.internal_syms != NULL) - free (finfo.internal_syms); - if (finfo.sym_indices != NULL) - free (finfo.sym_indices); - if (finfo.outsyms != NULL) - free (finfo.outsyms); - if (finfo.linenos != NULL) - free (finfo.linenos); - if (finfo.contents != NULL) - free (finfo.contents); - if (finfo.external_relocs != NULL) - free (finfo.external_relocs); - if (external_relocs != NULL) - free (external_relocs); - return false; -} - -/* Link an input file into the linker output file. This function - handles all the sections and relocations of the input file at once. */ - -static boolean -xcoff_link_input_bfd (finfo, input_bfd) - struct xcoff_final_link_info *finfo; - bfd *input_bfd; -{ - bfd *output_bfd; - const char *strings; - bfd_size_type syment_base; - unsigned int n_tmask; - unsigned int n_btshft; - boolean copy, hash; - bfd_size_type isymesz; - bfd_size_type osymesz; - bfd_size_type linesz; - bfd_byte *esym; - bfd_byte *esym_end; - struct xcoff_link_hash_entry **sym_hash; - struct internal_syment *isymp; - asection **csectpp; - unsigned long *debug_index; - long *indexp; - unsigned long output_index; - bfd_byte *outsym; - unsigned int incls; - asection *oline; - boolean keep_syms; - asection *o; - - /* We can just skip DYNAMIC files, unless this is a static link. */ - if ((input_bfd->flags & DYNAMIC) != 0 - && ! finfo->info->static_link) - return true; - - /* Move all the symbols to the output file. */ - - output_bfd = finfo->output_bfd; - strings = NULL; - syment_base = obj_raw_syment_count (output_bfd); - isymesz = bfd_coff_symesz (input_bfd); - osymesz = bfd_coff_symesz (output_bfd); - linesz = bfd_coff_linesz (input_bfd); - BFD_ASSERT (linesz == bfd_coff_linesz (output_bfd)); - - n_tmask = coff_data (input_bfd)->local_n_tmask; - n_btshft = coff_data (input_bfd)->local_n_btshft; - - /* Define macros so that ISFCN, et. al., macros work correctly. */ -#define N_TMASK n_tmask -#define N_BTSHFT n_btshft - - copy = false; - if (! finfo->info->keep_memory) - copy = true; - hash = true; - if ((output_bfd->flags & BFD_TRADITIONAL_FORMAT) != 0) - hash = false; - - if (! _bfd_coff_get_external_symbols (input_bfd)) - return false; - - esym = (bfd_byte *) obj_coff_external_syms (input_bfd); - esym_end = esym + obj_raw_syment_count (input_bfd) * isymesz; - sym_hash = obj_xcoff_sym_hashes (input_bfd); - csectpp = xcoff_data (input_bfd)->csects; - debug_index = xcoff_data (input_bfd)->debug_indices; - isymp = finfo->internal_syms; - indexp = finfo->sym_indices; - output_index = syment_base; - outsym = finfo->outsyms; - incls = 0; - oline = NULL; - - while (esym < esym_end) - { - struct internal_syment isym; - union internal_auxent aux; - int smtyp = 0; - boolean skip; - boolean require; - int add; - - bfd_coff_swap_sym_in (input_bfd, (PTR) esym, (PTR) isymp); - - /* If this is a C_EXT or C_HIDEXT symbol, we need the csect - information. */ - if (isymp->n_sclass == C_EXT || isymp->n_sclass == C_HIDEXT) - { - BFD_ASSERT (isymp->n_numaux > 0); - bfd_coff_swap_aux_in (input_bfd, - (PTR) (esym + isymesz * isymp->n_numaux), - isymp->n_type, isymp->n_sclass, - isymp->n_numaux - 1, isymp->n_numaux, - (PTR) &aux); - smtyp = SMTYP_SMTYP (aux.x_csect.x_smtyp); - } - - /* Make a copy of *isymp so that the relocate_section function - always sees the original values. This is more reliable than - always recomputing the symbol value even if we are stripping - the symbol. */ - isym = *isymp; - - /* If this symbol is in the .loader section, swap out the - .loader symbol information. If this is an external symbol - reference to a defined symbol, though, then wait until we get - to the definition. */ - if (isym.n_sclass == C_EXT - && *sym_hash != NULL - && (*sym_hash)->ldsym != NULL - && (smtyp != XTY_ER - || (*sym_hash)->root.type == bfd_link_hash_undefined)) - { - struct xcoff_link_hash_entry *h; - struct internal_ldsym *ldsym; - - h = *sym_hash; - ldsym = h->ldsym; - if (isym.n_scnum > 0) - { - ldsym->l_scnum = (*csectpp)->output_section->target_index; - ldsym->l_value = (isym.n_value - + (*csectpp)->output_section->vma - + (*csectpp)->output_offset - - (*csectpp)->vma); - } - else - { - ldsym->l_scnum = isym.n_scnum; - ldsym->l_value = isym.n_value; - } - - ldsym->l_smtype = smtyp; - if (((h->flags & XCOFF_DEF_REGULAR) == 0 - && (h->flags & XCOFF_DEF_DYNAMIC) != 0) - || (h->flags & XCOFF_IMPORT) != 0) - ldsym->l_smtype |= L_IMPORT; - if (((h->flags & XCOFF_DEF_REGULAR) != 0 - && (h->flags & XCOFF_DEF_DYNAMIC) != 0) - || (h->flags & XCOFF_EXPORT) != 0) - ldsym->l_smtype |= L_EXPORT; - if ((h->flags & XCOFF_ENTRY) != 0) - ldsym->l_smtype |= L_ENTRY; - - ldsym->l_smclas = aux.x_csect.x_smclas; - - if (ldsym->l_ifile == (bfd_size_type) -1) - ldsym->l_ifile = 0; - else if (ldsym->l_ifile == 0) - { - if ((ldsym->l_smtype & L_IMPORT) == 0) - ldsym->l_ifile = 0; - else - { - bfd *impbfd; - - if (h->root.type == bfd_link_hash_defined - || h->root.type == bfd_link_hash_defweak) - impbfd = h->root.u.def.section->owner; - else if (h->root.type == bfd_link_hash_undefined - || h->root.type == bfd_link_hash_undefweak) - impbfd = h->root.u.undef.abfd; - else - impbfd = NULL; - - if (impbfd == NULL) - ldsym->l_ifile = 0; - else - { - BFD_ASSERT (impbfd->xvec == finfo->output_bfd->xvec); - ldsym->l_ifile = xcoff_data (impbfd)->import_file_id; - } - } - } - - ldsym->l_parm = 0; - - BFD_ASSERT (h->ldindx >= 0); - BFD_ASSERT (LDSYMSZ == sizeof (struct external_ldsym)); - xcoff_swap_ldsym_out (finfo->output_bfd, ldsym, - finfo->ldsym + h->ldindx - 3); - h->ldsym = NULL; - - /* Fill in snentry now that we know the target_index. */ - if ((h->flags & XCOFF_ENTRY) != 0 - && (h->root.type == bfd_link_hash_defined - || h->root.type == bfd_link_hash_defweak)) - xcoff_data (output_bfd)->snentry = - h->root.u.def.section->output_section->target_index; - } - - *indexp = -1; - - skip = false; - require = false; - add = 1 + isym.n_numaux; - - /* If we are skipping this csect, we want to skip this symbol. */ - if (*csectpp == NULL) - skip = true; - - /* If we garbage collected this csect, we want to skip this - symbol. */ - if (! skip - && xcoff_hash_table (finfo->info)->gc - && ((*csectpp)->flags & SEC_MARK) == 0 - && *csectpp != bfd_abs_section_ptr) - skip = true; - - /* An XCOFF linker always skips C_STAT symbols. */ - if (! skip - && isymp->n_sclass == C_STAT) - skip = true; - - /* We skip all but the first TOC anchor. */ - if (! skip - && isymp->n_sclass == C_HIDEXT - && aux.x_csect.x_smclas == XMC_TC0) - { - if (finfo->toc_symindx != -1) - skip = true; - else - { - bfd_vma tocval, tocend; - - tocval = ((*csectpp)->output_section->vma - + (*csectpp)->output_offset - + isym.n_value - - (*csectpp)->vma); - /* We want to find out if tocval is a good value to use - as the TOC anchor--that is, whether we can access all - of the TOC using a 16 bit offset from tocval. This - test assumes that the TOC comes at the end of the - output section, as it does in the default linker - script. FIXME: This doesn't handle .tocbss sections - created from XMC_TD common symbols correctly. */ - - tocend = ((*csectpp)->output_section->vma - + (*csectpp)->output_section->_raw_size); - - if (tocval + 0x10000 < tocend) - { - (*_bfd_error_handler) - (_("TOC overflow: 0x%lx > 0x10000; try -mminimal-toc when compiling"), - (unsigned long) (tocend - tocval)); - bfd_set_error (bfd_error_file_too_big); - return false; - } - - if (tocval + 0x8000 < tocend) - { - bfd_vma tocadd; - - tocadd = tocend - (tocval + 0x8000); - tocval += tocadd; - isym.n_value += tocadd; - } - - finfo->toc_symindx = output_index; - xcoff_data (finfo->output_bfd)->toc = tocval; - xcoff_data (finfo->output_bfd)->sntoc = - (*csectpp)->output_section->target_index; - require = true; - } - } - - /* If we are stripping all symbols, we want to skip this one. */ - if (! skip - && finfo->info->strip == strip_all) - skip = true; - - /* We can skip resolved external references. */ - if (! skip - && isym.n_sclass == C_EXT - && smtyp == XTY_ER - && (*sym_hash)->root.type != bfd_link_hash_undefined) - skip = true; - - /* We can skip common symbols if they got defined somewhere - else. */ - if (! skip - && isym.n_sclass == C_EXT - && smtyp == XTY_CM - && ((*sym_hash)->root.type != bfd_link_hash_common - || (*sym_hash)->root.u.c.p->section != *csectpp) - && ((*sym_hash)->root.type != bfd_link_hash_defined - || (*sym_hash)->root.u.def.section != *csectpp)) - skip = true; - - /* Skip local symbols if we are discarding them. */ - if (! skip - && finfo->info->discard == discard_all - && isym.n_sclass != C_EXT - && (isym.n_sclass != C_HIDEXT - || smtyp != XTY_SD)) - skip = true; - - /* If we stripping debugging symbols, and this is a debugging - symbol, then skip it. */ - if (! skip - && finfo->info->strip == strip_debugger - && isym.n_scnum == N_DEBUG) - skip = true; - - /* If some symbols are stripped based on the name, work out the - name and decide whether to skip this symbol. We don't handle - this correctly for symbols whose names are in the .debug - section; to get it right we would need a new bfd_strtab_hash - function to return the string given the index. */ - if (! skip - && (finfo->info->strip == strip_some - || finfo->info->discard == discard_l) - && (debug_index == NULL || *debug_index == (unsigned long) -1)) - { - const char *name; - char buf[SYMNMLEN + 1]; - - name = _bfd_coff_internal_syment_name (input_bfd, &isym, buf); - if (name == NULL) - return false; - - if ((finfo->info->strip == strip_some - && (bfd_hash_lookup (finfo->info->keep_hash, name, false, - false) == NULL)) - || (finfo->info->discard == discard_l - && (isym.n_sclass != C_EXT - && (isym.n_sclass != C_HIDEXT - || smtyp != XTY_SD)) - && bfd_is_local_label_name (input_bfd, name))) - skip = true; - } - - /* We can not skip the first TOC anchor. */ - if (skip - && require - && finfo->info->strip != strip_all) - skip = false; - - /* We now know whether we are to skip this symbol or not. */ - if (! skip) - { - /* Adjust the symbol in order to output it. */ - - if (isym._n._n_n._n_zeroes == 0 - && isym._n._n_n._n_offset != 0) - { - /* This symbol has a long name. Enter it in the string - table we are building. If *debug_index != -1, the - name has already been entered in the .debug section. */ - if (debug_index != NULL && *debug_index != (unsigned long) -1) - isym._n._n_n._n_offset = *debug_index; - else - { - const char *name; - bfd_size_type indx; - - name = _bfd_coff_internal_syment_name (input_bfd, &isym, - (char *) NULL); - if (name == NULL) - return false; - indx = _bfd_stringtab_add (finfo->strtab, name, hash, copy); - if (indx == (bfd_size_type) -1) - return false; - isym._n._n_n._n_offset = STRING_SIZE_SIZE + indx; - } - } - - if (isym.n_sclass != C_BSTAT - && isym.n_sclass != C_ESTAT - && isym.n_sclass != C_DECL - && isym.n_scnum > 0) - { - isym.n_scnum = (*csectpp)->output_section->target_index; - isym.n_value += ((*csectpp)->output_section->vma - + (*csectpp)->output_offset - - (*csectpp)->vma); - } - - /* The value of a C_FILE symbol is the symbol index of the - next C_FILE symbol. The value of the last C_FILE symbol - is -1. We try to get this right, below, just before we - write the symbols out, but in the general case we may - have to write the symbol out twice. */ - if (isym.n_sclass == C_FILE) - { - if (finfo->last_file_index != -1 - && finfo->last_file.n_value != (long) output_index) - { - /* We must correct the value of the last C_FILE entry. */ - finfo->last_file.n_value = output_index; - if ((bfd_size_type) finfo->last_file_index >= syment_base) - { - /* The last C_FILE symbol is in this input file. */ - bfd_coff_swap_sym_out (output_bfd, - (PTR) &finfo->last_file, - (PTR) (finfo->outsyms - + ((finfo->last_file_index - - syment_base) - * osymesz))); - } - else - { - /* We have already written out the last C_FILE - symbol. We need to write it out again. We - borrow *outsym temporarily. */ - bfd_coff_swap_sym_out (output_bfd, - (PTR) &finfo->last_file, - (PTR) outsym); - if (bfd_seek (output_bfd, - (obj_sym_filepos (output_bfd) - + finfo->last_file_index * osymesz), - SEEK_SET) != 0 - || (bfd_write (outsym, osymesz, 1, output_bfd) - != osymesz)) - return false; - } - } - - finfo->last_file_index = output_index; - finfo->last_file = isym; - } - - /* The value of a C_BINCL or C_EINCL symbol is a file offset - into the line numbers. We update the symbol values when - we handle the line numbers. */ - if (isym.n_sclass == C_BINCL - || isym.n_sclass == C_EINCL) - { - isym.n_value = finfo->line_filepos; - ++incls; - } - - /* Output the symbol. */ - - bfd_coff_swap_sym_out (output_bfd, (PTR) &isym, (PTR) outsym); - - *indexp = output_index; - - if (isym.n_sclass == C_EXT) - { - long indx; - struct xcoff_link_hash_entry *h; - - indx = ((esym - (bfd_byte *) obj_coff_external_syms (input_bfd)) - / isymesz); - h = obj_xcoff_sym_hashes (input_bfd)[indx]; - BFD_ASSERT (h != NULL); - h->indx = output_index; - } - - /* If this is a symbol in the TOC which we may have merged - (class XMC_TC), remember the symbol index of the TOC - symbol. */ - if (isym.n_sclass == C_HIDEXT - && aux.x_csect.x_smclas == XMC_TC - && *sym_hash != NULL) - { - BFD_ASSERT (((*sym_hash)->flags & XCOFF_SET_TOC) == 0); - BFD_ASSERT ((*sym_hash)->toc_section != NULL); - (*sym_hash)->u.toc_indx = output_index; - } - - output_index += add; - outsym += add * osymesz; - } - - esym += add * isymesz; - isymp += add; - csectpp += add; - sym_hash += add; - if (debug_index != NULL) - debug_index += add; - ++indexp; - for (--add; add > 0; --add) - *indexp++ = -1; - } - - /* Fix up the aux entries and the C_BSTAT symbols. This must be - done in a separate pass, because we don't know the correct symbol - indices until we have already decided which symbols we are going - to keep. */ - - esym = (bfd_byte *) obj_coff_external_syms (input_bfd); - esym_end = esym + obj_raw_syment_count (input_bfd) * isymesz; - isymp = finfo->internal_syms; - indexp = finfo->sym_indices; - csectpp = xcoff_data (input_bfd)->csects; - outsym = finfo->outsyms; - while (esym < esym_end) - { - int add; - - add = 1 + isymp->n_numaux; - - if (*indexp < 0) - esym += add * isymesz; - else - { - int i; - - if (isymp->n_sclass == C_BSTAT) - { - struct internal_syment isym; - unsigned long indx; - - /* The value of a C_BSTAT symbol is the symbol table - index of the containing csect. */ - bfd_coff_swap_sym_in (output_bfd, (PTR) outsym, (PTR) &isym); - indx = isym.n_value; - if (indx < obj_raw_syment_count (input_bfd)) - { - long symindx; - - symindx = finfo->sym_indices[indx]; - if (symindx < 0) - isym.n_value = 0; - else - isym.n_value = symindx; - bfd_coff_swap_sym_out (output_bfd, (PTR) &isym, - (PTR) outsym); - } - } - - esym += isymesz; - outsym += osymesz; - - for (i = 0; i < isymp->n_numaux && esym < esym_end; i++) - { - union internal_auxent aux; - - bfd_coff_swap_aux_in (input_bfd, (PTR) esym, isymp->n_type, - isymp->n_sclass, i, isymp->n_numaux, - (PTR) &aux); - - if (isymp->n_sclass == C_FILE) - { - /* This is the file name (or some comment put in by - the compiler). If it is long, we must put it in - the string table. */ - if (aux.x_file.x_n.x_zeroes == 0 - && aux.x_file.x_n.x_offset != 0) - { - const char *filename; - bfd_size_type indx; - - BFD_ASSERT (aux.x_file.x_n.x_offset - >= STRING_SIZE_SIZE); - if (strings == NULL) - { - strings = _bfd_coff_read_string_table (input_bfd); - if (strings == NULL) - return false; - } - filename = strings + aux.x_file.x_n.x_offset; - indx = _bfd_stringtab_add (finfo->strtab, filename, - hash, copy); - if (indx == (bfd_size_type) -1) - return false; - aux.x_file.x_n.x_offset = STRING_SIZE_SIZE + indx; - } - } - else if ((isymp->n_sclass == C_EXT - || isymp->n_sclass == C_HIDEXT) - && i + 1 == isymp->n_numaux) - { - /* We don't support type checking. I don't know if - anybody does. */ - aux.x_csect.x_parmhash = 0; - /* I don't think anybody uses these fields, but we'd - better clobber them just in case. */ - aux.x_csect.x_stab = 0; - aux.x_csect.x_snstab = 0; - if (SMTYP_SMTYP (aux.x_csect.x_smtyp) == XTY_LD) - { - unsigned long indx; - - indx = aux.x_csect.x_scnlen.l; - if (indx < obj_raw_syment_count (input_bfd)) - { - long symindx; - - symindx = finfo->sym_indices[indx]; - if (symindx < 0) - aux.x_sym.x_tagndx.l = 0; - else - aux.x_sym.x_tagndx.l = symindx; - } - } - } - else if (isymp->n_sclass != C_STAT || isymp->n_type != T_NULL) - { - unsigned long indx; - - if (ISFCN (isymp->n_type) - || ISTAG (isymp->n_sclass) - || isymp->n_sclass == C_BLOCK - || isymp->n_sclass == C_FCN) - { - indx = aux.x_sym.x_fcnary.x_fcn.x_endndx.l; - if (indx > 0 - && indx < obj_raw_syment_count (input_bfd)) - { - /* We look forward through the symbol for - the index of the next symbol we are going - to include. I don't know if this is - entirely right. */ - while (finfo->sym_indices[indx] < 0 - && indx < obj_raw_syment_count (input_bfd)) - ++indx; - if (indx >= obj_raw_syment_count (input_bfd)) - indx = output_index; - else - indx = finfo->sym_indices[indx]; - aux.x_sym.x_fcnary.x_fcn.x_endndx.l = indx; - } - } - - indx = aux.x_sym.x_tagndx.l; - if (indx > 0 && indx < obj_raw_syment_count (input_bfd)) - { - long symindx; - - symindx = finfo->sym_indices[indx]; - if (symindx < 0) - aux.x_sym.x_tagndx.l = 0; - else - aux.x_sym.x_tagndx.l = symindx; - } - } - - /* Copy over the line numbers, unless we are stripping - them. We do this on a symbol by symbol basis in - order to more easily handle garbage collection. */ - if ((isymp->n_sclass == C_EXT - || isymp->n_sclass == C_HIDEXT) - && i == 0 - && isymp->n_numaux > 1 - && ISFCN (isymp->n_type) - && aux.x_sym.x_fcnary.x_fcn.x_lnnoptr != 0) - { - if (finfo->info->strip != strip_none - && finfo->info->strip != strip_some) - aux.x_sym.x_fcnary.x_fcn.x_lnnoptr = 0; - else - { - asection *enclosing; - unsigned int enc_count; - bfd_size_type linoff; - struct internal_lineno lin; - - o = *csectpp; - enclosing = xcoff_section_data (abfd, o)->enclosing; - enc_count = xcoff_section_data (abfd, o)->lineno_count; - if (oline != enclosing) - { - if (bfd_seek (input_bfd, - enclosing->line_filepos, - SEEK_SET) != 0 - || (bfd_read (finfo->linenos, linesz, - enc_count, input_bfd) - != linesz * enc_count)) - return false; - oline = enclosing; - } - - linoff = (aux.x_sym.x_fcnary.x_fcn.x_lnnoptr - - enclosing->line_filepos); - - bfd_coff_swap_lineno_in (input_bfd, - (PTR) (finfo->linenos + linoff), - (PTR) &lin); - if (lin.l_lnno != 0 - || ((bfd_size_type) lin.l_addr.l_symndx - != ((esym - - isymesz - - ((bfd_byte *) - obj_coff_external_syms (input_bfd))) - / isymesz))) - aux.x_sym.x_fcnary.x_fcn.x_lnnoptr = 0; - else - { - bfd_byte *linpend, *linp; - bfd_vma offset; - bfd_size_type count; - - lin.l_addr.l_symndx = *indexp; - bfd_coff_swap_lineno_out (output_bfd, (PTR) &lin, - (PTR) (finfo->linenos - + linoff)); - - linpend = (finfo->linenos - + enc_count * linesz); - offset = (o->output_section->vma - + o->output_offset - - o->vma); - for (linp = finfo->linenos + linoff + linesz; - linp < linpend; - linp += linesz) - { - bfd_coff_swap_lineno_in (input_bfd, (PTR) linp, - (PTR) &lin); - if (lin.l_lnno == 0) - break; - lin.l_addr.l_paddr += offset; - bfd_coff_swap_lineno_out (output_bfd, - (PTR) &lin, - (PTR) linp); - } - - count = (linp - (finfo->linenos + linoff)) / linesz; - - aux.x_sym.x_fcnary.x_fcn.x_lnnoptr = - (o->output_section->line_filepos - + o->output_section->lineno_count * linesz); - - if (bfd_seek (output_bfd, - aux.x_sym.x_fcnary.x_fcn.x_lnnoptr, - SEEK_SET) != 0 - || (bfd_write (finfo->linenos + linoff, - linesz, count, output_bfd) - != linesz * count)) - return false; - - o->output_section->lineno_count += count; - - if (incls > 0) - { - struct internal_syment *iisp, *iispend; - long *iindp; - bfd_byte *oos; - int iiadd; - - /* Update any C_BINCL or C_EINCL symbols - that refer to a line number in the - range we just output. */ - iisp = finfo->internal_syms; - iispend = (iisp - + obj_raw_syment_count (input_bfd)); - iindp = finfo->sym_indices; - oos = finfo->outsyms; - while (iisp < iispend) - { - if (*iindp >= 0 - && (iisp->n_sclass == C_BINCL - || iisp->n_sclass == C_EINCL) - && ((bfd_size_type) iisp->n_value - >= enclosing->line_filepos + linoff) - && ((bfd_size_type) iisp->n_value - < (enclosing->line_filepos - + enc_count * linesz))) - { - struct internal_syment iis; - - bfd_coff_swap_sym_in (output_bfd, - (PTR) oos, - (PTR) &iis); - iis.n_value = - (iisp->n_value - - enclosing->line_filepos - - linoff - + aux.x_sym.x_fcnary.x_fcn.x_lnnoptr); - bfd_coff_swap_sym_out (output_bfd, - (PTR) &iis, - (PTR) oos); - --incls; - } - - iiadd = 1 + iisp->n_numaux; - if (*iindp >= 0) - oos += iiadd * osymesz; - iisp += iiadd; - iindp += iiadd; - } - } - } - } - } - - bfd_coff_swap_aux_out (output_bfd, (PTR) &aux, isymp->n_type, - isymp->n_sclass, i, isymp->n_numaux, - (PTR) outsym); - outsym += osymesz; - esym += isymesz; - } - } - - indexp += add; - isymp += add; - csectpp += add; - } - - /* If we swapped out a C_FILE symbol, guess that the next C_FILE - symbol will be the first symbol in the next input file. In the - normal case, this will save us from writing out the C_FILE symbol - again. */ - if (finfo->last_file_index != -1 - && (bfd_size_type) finfo->last_file_index >= syment_base) - { - finfo->last_file.n_value = output_index; - bfd_coff_swap_sym_out (output_bfd, (PTR) &finfo->last_file, - (PTR) (finfo->outsyms - + ((finfo->last_file_index - syment_base) - * osymesz))); - } - - /* Write the modified symbols to the output file. */ - if (outsym > finfo->outsyms) - { - if (bfd_seek (output_bfd, - obj_sym_filepos (output_bfd) + syment_base * osymesz, - SEEK_SET) != 0 - || (bfd_write (finfo->outsyms, outsym - finfo->outsyms, 1, - output_bfd) - != (bfd_size_type) (outsym - finfo->outsyms))) - return false; - - BFD_ASSERT ((obj_raw_syment_count (output_bfd) - + (outsym - finfo->outsyms) / osymesz) - == output_index); - - obj_raw_syment_count (output_bfd) = output_index; - } - - /* Don't let the linker relocation routines discard the symbols. */ - keep_syms = obj_coff_keep_syms (input_bfd); - obj_coff_keep_syms (input_bfd) = true; - - /* Relocate the contents of each section. */ - for (o = input_bfd->sections; o != NULL; o = o->next) - { - bfd_byte *contents; - - if (! o->linker_mark) - { - /* This section was omitted from the link. */ - continue; - } - - if ((o->flags & SEC_HAS_CONTENTS) == 0 - || o->_raw_size == 0 - || (o->flags & SEC_IN_MEMORY) != 0) - continue; - - /* We have set filepos correctly for the sections we created to - represent csects, so bfd_get_section_contents should work. */ - if (coff_section_data (input_bfd, o) != NULL - && coff_section_data (input_bfd, o)->contents != NULL) - contents = coff_section_data (input_bfd, o)->contents; - else - { - if (! bfd_get_section_contents (input_bfd, o, finfo->contents, - (file_ptr) 0, o->_raw_size)) - return false; - contents = finfo->contents; - } - - if ((o->flags & SEC_RELOC) != 0) - { - int target_index; - struct internal_reloc *internal_relocs; - struct internal_reloc *irel; - bfd_vma offset; - struct internal_reloc *irelend; - struct xcoff_link_hash_entry **rel_hash; - long r_symndx; - - /* Read in the relocs. */ - target_index = o->output_section->target_index; - internal_relocs = (xcoff_read_internal_relocs - (input_bfd, o, false, finfo->external_relocs, - true, - (finfo->section_info[target_index].relocs - + o->output_section->reloc_count))); - if (internal_relocs == NULL) - return false; - - /* Call processor specific code to relocate the section - contents. */ - if (! bfd_coff_relocate_section (output_bfd, finfo->info, - input_bfd, o, - contents, - internal_relocs, - finfo->internal_syms, - xcoff_data (input_bfd)->csects)) - return false; - - offset = o->output_section->vma + o->output_offset - o->vma; - irel = internal_relocs; - irelend = irel + o->reloc_count; - rel_hash = (finfo->section_info[target_index].rel_hashes - + o->output_section->reloc_count); - for (; irel < irelend; irel++, rel_hash++) - { - struct xcoff_link_hash_entry *h = NULL; - struct internal_ldrel ldrel; - boolean quiet; - - *rel_hash = NULL; - - /* Adjust the reloc address and symbol index. */ - - irel->r_vaddr += offset; - - r_symndx = irel->r_symndx; - - if (r_symndx == -1) - h = NULL; - else - h = obj_xcoff_sym_hashes (input_bfd)[r_symndx]; - - if (r_symndx != -1 && finfo->info->strip != strip_all) - { - if (h != NULL - && h->smclas != XMC_TD - && (irel->r_type == R_TOC - || irel->r_type == R_GL - || irel->r_type == R_TCL - || irel->r_type == R_TRL - || irel->r_type == R_TRLA)) - { - /* This is a TOC relative reloc with a symbol - attached. The symbol should be the one which - this reloc is for. We want to make this - reloc against the TOC address of the symbol, - not the symbol itself. */ - BFD_ASSERT (h->toc_section != NULL); - BFD_ASSERT ((h->flags & XCOFF_SET_TOC) == 0); - if (h->u.toc_indx != -1) - irel->r_symndx = h->u.toc_indx; - else - { - struct xcoff_toc_rel_hash *n; - struct xcoff_link_section_info *si; - - n = ((struct xcoff_toc_rel_hash *) - bfd_alloc (finfo->output_bfd, - sizeof (struct xcoff_toc_rel_hash))); - if (n == NULL) - return false; - si = finfo->section_info + target_index; - n->next = si->toc_rel_hashes; - n->h = h; - n->rel = irel; - si->toc_rel_hashes = n; - } - } - else if (h != NULL) - { - /* This is a global symbol. */ - if (h->indx >= 0) - irel->r_symndx = h->indx; - else - { - /* This symbol is being written at the end - of the file, and we do not yet know the - symbol index. We save the pointer to the - hash table entry in the rel_hash list. - We set the indx field to -2 to indicate - that this symbol must not be stripped. */ - *rel_hash = h; - h->indx = -2; - } - } - else - { - long indx; - - indx = finfo->sym_indices[r_symndx]; - - if (indx == -1) - { - struct internal_syment *is; - - /* Relocations against a TC0 TOC anchor are - automatically transformed to be against - the TOC anchor in the output file. */ - is = finfo->internal_syms + r_symndx; - if (is->n_sclass == C_HIDEXT - && is->n_numaux > 0) - { - PTR auxptr; - union internal_auxent aux; - - auxptr = ((PTR) - (((bfd_byte *) - obj_coff_external_syms (input_bfd)) - + ((r_symndx + is->n_numaux) - * isymesz))); - bfd_coff_swap_aux_in (input_bfd, auxptr, - is->n_type, is->n_sclass, - is->n_numaux - 1, - is->n_numaux, - (PTR) &aux); - if (SMTYP_SMTYP (aux.x_csect.x_smtyp) == XTY_SD - && aux.x_csect.x_smclas == XMC_TC0) - indx = finfo->toc_symindx; - } - } - - if (indx != -1) - irel->r_symndx = indx; - else - { - struct internal_syment *is; - const char *name; - char buf[SYMNMLEN + 1]; - - /* This reloc is against a symbol we are - stripping. It would be possible to handle - this case, but I don't think it's worth it. */ - is = finfo->internal_syms + r_symndx; - - name = (_bfd_coff_internal_syment_name - (input_bfd, is, buf)); - if (name == NULL) - return false; - - if (! ((*finfo->info->callbacks->unattached_reloc) - (finfo->info, name, input_bfd, o, - irel->r_vaddr))) - return false; - } - } - } - - quiet = false; - switch (irel->r_type) - { - default: - if (h == NULL - || h->root.type == bfd_link_hash_defined - || h->root.type == bfd_link_hash_defweak - || h->root.type == bfd_link_hash_common) - break; - /* Fall through. */ - case R_POS: - case R_NEG: - case R_RL: - case R_RLA: - /* This reloc needs to be copied into the .loader - section. */ - ldrel.l_vaddr = irel->r_vaddr; - if (r_symndx == -1) - ldrel.l_symndx = -1; - else if (h == NULL - || (h->root.type == bfd_link_hash_defined - || h->root.type == bfd_link_hash_defweak - || h->root.type == bfd_link_hash_common)) - { - asection *sec; - - if (h == NULL) - sec = xcoff_data (input_bfd)->csects[r_symndx]; - else if (h->root.type == bfd_link_hash_common) - sec = h->root.u.c.p->section; - else - sec = h->root.u.def.section; - sec = sec->output_section; - - if (strcmp (sec->name, ".text") == 0) - ldrel.l_symndx = 0; - else if (strcmp (sec->name, ".data") == 0) - ldrel.l_symndx = 1; - else if (strcmp (sec->name, ".bss") == 0) - ldrel.l_symndx = 2; - else - { - (*_bfd_error_handler) - (_("%s: loader reloc in unrecognized section `%s'"), - bfd_get_filename (input_bfd), - sec->name); - bfd_set_error (bfd_error_nonrepresentable_section); - return false; - } - } - else - { - if (! finfo->info->relocateable - && (h->flags & XCOFF_DEF_DYNAMIC) == 0 - && (h->flags & XCOFF_IMPORT) == 0) - { - /* We already called the undefined_symbol - callback for this relocation, in - _bfd_ppc_xcoff_relocate_section. Don't - issue any more warnings. */ - quiet = true; - } - if (h->ldindx < 0 && ! quiet) - { - (*_bfd_error_handler) - (_("%s: `%s' in loader reloc but not loader sym"), - bfd_get_filename (input_bfd), - h->root.root.string); - bfd_set_error (bfd_error_bad_value); - return false; - } - ldrel.l_symndx = h->ldindx; - } - ldrel.l_rtype = (irel->r_size << 8) | irel->r_type; - ldrel.l_rsecnm = o->output_section->target_index; - if (xcoff_hash_table (finfo->info)->textro - && strcmp (o->output_section->name, ".text") == 0 - && ! quiet) - { - (*_bfd_error_handler) - (_("%s: loader reloc in read-only section %s"), - bfd_get_filename (input_bfd), - bfd_get_section_name (finfo->output_bfd, - o->output_section)); - bfd_set_error (bfd_error_invalid_operation); - return false; - } - xcoff_swap_ldrel_out (output_bfd, &ldrel, - finfo->ldrel); - BFD_ASSERT (sizeof (struct external_ldrel) == LDRELSZ); - ++finfo->ldrel; - break; - - case R_TOC: - case R_GL: - case R_TCL: - case R_TRL: - case R_TRLA: - /* We should never need a .loader reloc for a TOC - relative reloc. */ - break; - } - } - - o->output_section->reloc_count += o->reloc_count; - } - - /* Write out the modified section contents. */ - if (! bfd_set_section_contents (output_bfd, o->output_section, - contents, o->output_offset, - (o->_cooked_size != 0 - ? o->_cooked_size - : o->_raw_size))) - return false; - } - - obj_coff_keep_syms (input_bfd) = keep_syms; - - if (! finfo->info->keep_memory) - { - if (! _bfd_coff_free_symbols (input_bfd)) - return false; - } - - return true; -} - -#undef N_TMASK -#undef N_BTSHFT - -/* Write out a non-XCOFF global symbol. */ - -static boolean -xcoff_write_global_symbol (h, p) - struct xcoff_link_hash_entry *h; - PTR p; -{ - struct xcoff_final_link_info *finfo = (struct xcoff_final_link_info *) p; - bfd *output_bfd; - bfd_byte *outsym; - struct internal_syment isym; - union internal_auxent aux; - - output_bfd = finfo->output_bfd; - outsym = finfo->outsyms; - - /* If this symbol was garbage collected, just skip it. */ - if (xcoff_hash_table (finfo->info)->gc - && (h->flags & XCOFF_MARK) == 0) - return true; - - /* If we need a .loader section entry, write it out. */ - if (h->ldsym != NULL) - { - struct internal_ldsym *ldsym; - bfd *impbfd; - - ldsym = h->ldsym; - - if (h->root.type == bfd_link_hash_undefined - || h->root.type == bfd_link_hash_undefweak) - { - ldsym->l_value = 0; - ldsym->l_scnum = N_UNDEF; - ldsym->l_smtype = XTY_ER; - impbfd = h->root.u.undef.abfd; - } - else if (h->root.type == bfd_link_hash_defined - || h->root.type == bfd_link_hash_defweak) - { - asection *sec; - - sec = h->root.u.def.section; - ldsym->l_value = (sec->output_section->vma - + sec->output_offset - + h->root.u.def.value); - ldsym->l_scnum = sec->output_section->target_index; - ldsym->l_smtype = XTY_SD; - impbfd = sec->owner; - } - else - abort (); - - if (((h->flags & XCOFF_DEF_REGULAR) == 0 - && (h->flags & XCOFF_DEF_DYNAMIC) != 0) - || (h->flags & XCOFF_IMPORT) != 0) - ldsym->l_smtype |= L_IMPORT; - if (((h->flags & XCOFF_DEF_REGULAR) != 0 - && (h->flags & XCOFF_DEF_DYNAMIC) != 0) - || (h->flags & XCOFF_EXPORT) != 0) - ldsym->l_smtype |= L_EXPORT; - if ((h->flags & XCOFF_ENTRY) != 0) - ldsym->l_smtype |= L_ENTRY; - - ldsym->l_smclas = h->smclas; - - if (ldsym->l_ifile == (bfd_size_type) -1) - ldsym->l_ifile = 0; - else if (ldsym->l_ifile == 0) - { - if ((ldsym->l_smtype & L_IMPORT) == 0) - ldsym->l_ifile = 0; - else if (impbfd == NULL) - ldsym->l_ifile = 0; - else - { - BFD_ASSERT (impbfd->xvec == output_bfd->xvec); - ldsym->l_ifile = xcoff_data (impbfd)->import_file_id; - } - } - - ldsym->l_parm = 0; - - BFD_ASSERT (h->ldindx >= 0); - BFD_ASSERT (LDSYMSZ == sizeof (struct external_ldsym)); - xcoff_swap_ldsym_out (output_bfd, ldsym, finfo->ldsym + h->ldindx - 3); - h->ldsym = NULL; - } - - /* If this symbol needs global linkage code, write it out. */ - if (h->root.type == bfd_link_hash_defined - && (h->root.u.def.section - == xcoff_hash_table (finfo->info)->linkage_section)) - { - bfd_byte *p; - bfd_vma tocoff; - unsigned int i; - - p = h->root.u.def.section->contents + h->root.u.def.value; - - /* The first instruction in the global linkage code loads a - specific TOC element. */ - tocoff = (h->descriptor->toc_section->output_section->vma - + h->descriptor->toc_section->output_offset - - xcoff_data (output_bfd)->toc); - if ((h->descriptor->flags & XCOFF_SET_TOC) != 0) - tocoff += h->descriptor->u.toc_offset; - bfd_put_32 (output_bfd, XCOFF_GLINK_FIRST | (tocoff & 0xffff), p); - for (i = 0, p += 4; - i < sizeof xcoff_glink_code / sizeof xcoff_glink_code[0]; - i++, p += 4) - bfd_put_32 (output_bfd, xcoff_glink_code[i], p); - } - - /* If we created a TOC entry for this symbol, write out the required - relocs. */ - if ((h->flags & XCOFF_SET_TOC) != 0) - { - asection *tocsec; - asection *osec; - int oindx; - struct internal_reloc *irel; - struct internal_ldrel ldrel; - struct internal_syment irsym; - union internal_auxent iraux; - - tocsec = h->toc_section; - osec = tocsec->output_section; - oindx = osec->target_index; - irel = finfo->section_info[oindx].relocs + osec->reloc_count; - irel->r_vaddr = (osec->vma - + tocsec->output_offset - + h->u.toc_offset); - if (h->indx >= 0) - irel->r_symndx = h->indx; - else - { - h->indx = -2; - irel->r_symndx = obj_raw_syment_count (output_bfd); - } - irel->r_type = R_POS; - irel->r_size = 31; - finfo->section_info[oindx].rel_hashes[osec->reloc_count] = NULL; - ++osec->reloc_count; - - BFD_ASSERT (h->ldindx >= 0); - ldrel.l_vaddr = irel->r_vaddr; - ldrel.l_symndx = h->ldindx; - ldrel.l_rtype = (31 << 8) | R_POS; - ldrel.l_rsecnm = oindx; - xcoff_swap_ldrel_out (output_bfd, &ldrel, finfo->ldrel); - ++finfo->ldrel; - - /* We need to emit a symbol to define a csect which holds the - reloc. */ - if (finfo->info->strip != strip_all) - { - if (strlen (h->root.root.string) <= SYMNMLEN) - strncpy (irsym._n._n_name, h->root.root.string, SYMNMLEN); - else - { - boolean hash; - bfd_size_type indx; - - hash = true; - if ((output_bfd->flags & BFD_TRADITIONAL_FORMAT) != 0) - hash = false; - indx = _bfd_stringtab_add (finfo->strtab, h->root.root.string, - hash, false); - if (indx == (bfd_size_type) -1) - return false; - irsym._n._n_n._n_zeroes = 0; - irsym._n._n_n._n_offset = STRING_SIZE_SIZE + indx; - } - - irsym.n_value = irel->r_vaddr; - irsym.n_scnum = osec->target_index; - irsym.n_sclass = C_HIDEXT; - irsym.n_type = T_NULL; - irsym.n_numaux = 1; - - bfd_coff_swap_sym_out (output_bfd, (PTR) &irsym, (PTR) outsym); - outsym += bfd_coff_symesz (output_bfd); - - memset (&iraux, 0, sizeof iraux); - iraux.x_csect.x_smtyp = XTY_SD; - iraux.x_csect.x_scnlen.l = 4; - iraux.x_csect.x_smclas = XMC_TC; - - bfd_coff_swap_aux_out (output_bfd, (PTR) &iraux, T_NULL, C_HIDEXT, - 0, 1, (PTR) outsym); - outsym += bfd_coff_auxesz (output_bfd); - - if (h->indx >= 0) - { - /* We aren't going to write out the symbols below, so we - need to write them out now. */ - if (bfd_seek (output_bfd, - (obj_sym_filepos (output_bfd) - + (obj_raw_syment_count (output_bfd) - * bfd_coff_symesz (output_bfd))), - SEEK_SET) != 0 - || (bfd_write (finfo->outsyms, outsym - finfo->outsyms, 1, - output_bfd) - != (bfd_size_type) (outsym - finfo->outsyms))) - return false; - obj_raw_syment_count (output_bfd) += - (outsym - finfo->outsyms) / bfd_coff_symesz (output_bfd); - - outsym = finfo->outsyms; - } - } - } - - /* If this symbol is a specially defined function descriptor, write - it out. The first word is the address of the function code - itself, the second word is the address of the TOC, and the third - word is zero. */ - if ((h->flags & XCOFF_DESCRIPTOR) != 0 - && h->root.type == bfd_link_hash_defined - && (h->root.u.def.section - == xcoff_hash_table (finfo->info)->descriptor_section)) - { - asection *sec; - asection *osec; - int oindx; - bfd_byte *p; - struct xcoff_link_hash_entry *hentry; - asection *esec; - struct internal_reloc *irel; - struct internal_ldrel ldrel; - asection *tsec; - - sec = h->root.u.def.section; - osec = sec->output_section; - oindx = osec->target_index; - p = sec->contents + h->root.u.def.value; - - hentry = h->descriptor; - BFD_ASSERT (hentry != NULL - && (hentry->root.type == bfd_link_hash_defined - || hentry->root.type == bfd_link_hash_defweak)); - esec = hentry->root.u.def.section; - bfd_put_32 (output_bfd, - (esec->output_section->vma - + esec->output_offset - + hentry->root.u.def.value), - p); - - irel = finfo->section_info[oindx].relocs + osec->reloc_count; - irel->r_vaddr = (osec->vma - + sec->output_offset - + h->root.u.def.value); - irel->r_symndx = esec->output_section->target_index; - irel->r_type = R_POS; - irel->r_size = 31; - finfo->section_info[oindx].rel_hashes[osec->reloc_count] = NULL; - ++osec->reloc_count; - - ldrel.l_vaddr = irel->r_vaddr; - if (strcmp (esec->output_section->name, ".text") == 0) - ldrel.l_symndx = 0; - else if (strcmp (esec->output_section->name, ".data") == 0) - ldrel.l_symndx = 1; - else if (strcmp (esec->output_section->name, ".bss") == 0) - ldrel.l_symndx = 2; - else - { - (*_bfd_error_handler) - (_("%s: loader reloc in unrecognized section `%s'"), - bfd_get_filename (output_bfd), - esec->output_section->name); - bfd_set_error (bfd_error_nonrepresentable_section); - return false; - } - ldrel.l_rtype = (31 << 8) | R_POS; - ldrel.l_rsecnm = oindx; - xcoff_swap_ldrel_out (output_bfd, &ldrel, finfo->ldrel); - ++finfo->ldrel; - - bfd_put_32 (output_bfd, xcoff_data (output_bfd)->toc, p + 4); - - tsec = coff_section_from_bfd_index (output_bfd, - xcoff_data (output_bfd)->sntoc); - - ++irel; - irel->r_vaddr = (osec->vma - + sec->output_offset - + h->root.u.def.value - + 4); - irel->r_symndx = tsec->output_section->target_index; - irel->r_type = R_POS; - irel->r_size = 31; - finfo->section_info[oindx].rel_hashes[osec->reloc_count] = NULL; - ++osec->reloc_count; - - ldrel.l_vaddr = irel->r_vaddr; - if (strcmp (tsec->output_section->name, ".text") == 0) - ldrel.l_symndx = 0; - else if (strcmp (tsec->output_section->name, ".data") == 0) - ldrel.l_symndx = 1; - else if (strcmp (tsec->output_section->name, ".bss") == 0) - ldrel.l_symndx = 2; - else - { - (*_bfd_error_handler) - (_("%s: loader reloc in unrecognized section `%s'"), - bfd_get_filename (output_bfd), - tsec->output_section->name); - bfd_set_error (bfd_error_nonrepresentable_section); - return false; - } - ldrel.l_rtype = (31 << 8) | R_POS; - ldrel.l_rsecnm = oindx; - xcoff_swap_ldrel_out (output_bfd, &ldrel, finfo->ldrel); - ++finfo->ldrel; - } - - if (h->indx >= 0 || finfo->info->strip == strip_all) - { - BFD_ASSERT (outsym == finfo->outsyms); - return true; - } - - if (h->indx != -2 - && (finfo->info->strip == strip_all - || (finfo->info->strip == strip_some - && (bfd_hash_lookup (finfo->info->keep_hash, - h->root.root.string, false, false) - == NULL)))) - { - BFD_ASSERT (outsym == finfo->outsyms); - return true; - } - - if (h->indx != -2 - && (h->flags & (XCOFF_REF_REGULAR | XCOFF_DEF_REGULAR)) == 0) - { - BFD_ASSERT (outsym == finfo->outsyms); - return true; - } - - memset (&aux, 0, sizeof aux); - - h->indx = obj_raw_syment_count (output_bfd); - - if (strlen (h->root.root.string) <= SYMNMLEN) - strncpy (isym._n._n_name, h->root.root.string, SYMNMLEN); - else - { - boolean hash; - bfd_size_type indx; - - hash = true; - if ((output_bfd->flags & BFD_TRADITIONAL_FORMAT) != 0) - hash = false; - indx = _bfd_stringtab_add (finfo->strtab, h->root.root.string, hash, - false); - if (indx == (bfd_size_type) -1) - return false; - isym._n._n_n._n_zeroes = 0; - isym._n._n_n._n_offset = STRING_SIZE_SIZE + indx; - } - - if (h->root.type == bfd_link_hash_undefined - || h->root.type == bfd_link_hash_undefweak) - { - isym.n_value = 0; - isym.n_scnum = N_UNDEF; - isym.n_sclass = C_EXT; - aux.x_csect.x_smtyp = XTY_ER; - } - else if ((h->root.type == bfd_link_hash_defined - || h->root.type == bfd_link_hash_defweak) - && h->smclas == XMC_XO) - { - BFD_ASSERT (bfd_is_abs_section (h->root.u.def.section)); - isym.n_value = h->root.u.def.value; - isym.n_scnum = N_UNDEF; - isym.n_sclass = C_EXT; - aux.x_csect.x_smtyp = XTY_ER; - } - else if (h->root.type == bfd_link_hash_defined - || h->root.type == bfd_link_hash_defweak) - { - struct xcoff_link_size_list *l; - - isym.n_value = (h->root.u.def.section->output_section->vma - + h->root.u.def.section->output_offset - + h->root.u.def.value); - isym.n_scnum = h->root.u.def.section->output_section->target_index; - isym.n_sclass = C_HIDEXT; - aux.x_csect.x_smtyp = XTY_SD; - - if ((h->flags & XCOFF_HAS_SIZE) != 0) - { - for (l = xcoff_hash_table (finfo->info)->size_list; - l != NULL; - l = l->next) - { - if (l->h == h) - { - aux.x_csect.x_scnlen.l = l->size; - break; - } - } - } - } - else if (h->root.type == bfd_link_hash_common) - { - isym.n_value = (h->root.u.c.p->section->output_section->vma - + h->root.u.c.p->section->output_offset); - isym.n_scnum = h->root.u.c.p->section->output_section->target_index; - isym.n_sclass = C_EXT; - aux.x_csect.x_smtyp = XTY_CM; - aux.x_csect.x_scnlen.l = h->root.u.c.size; - } - else - abort (); - - isym.n_type = T_NULL; - isym.n_numaux = 1; - - bfd_coff_swap_sym_out (output_bfd, (PTR) &isym, (PTR) outsym); - outsym += bfd_coff_symesz (output_bfd); - - aux.x_csect.x_smclas = h->smclas; - - bfd_coff_swap_aux_out (output_bfd, (PTR) &aux, T_NULL, isym.n_sclass, 0, 1, - (PTR) outsym); - outsym += bfd_coff_auxesz (output_bfd); - - if ((h->root.type == bfd_link_hash_defined - || h->root.type == bfd_link_hash_defweak) - && h->smclas != XMC_XO) - { - /* We just output an SD symbol. Now output an LD symbol. */ - - h->indx += 2; - - isym.n_sclass = C_EXT; - bfd_coff_swap_sym_out (output_bfd, (PTR) &isym, (PTR) outsym); - outsym += bfd_coff_symesz (output_bfd); - - aux.x_csect.x_smtyp = XTY_LD; - aux.x_csect.x_scnlen.l = obj_raw_syment_count (output_bfd); - - bfd_coff_swap_aux_out (output_bfd, (PTR) &aux, T_NULL, C_EXT, 0, 1, - (PTR) outsym); - outsym += bfd_coff_auxesz (output_bfd); - } - - if (bfd_seek (output_bfd, - (obj_sym_filepos (output_bfd) - + (obj_raw_syment_count (output_bfd) - * bfd_coff_symesz (output_bfd))), - SEEK_SET) != 0 - || (bfd_write (finfo->outsyms, outsym - finfo->outsyms, 1, output_bfd) - != (bfd_size_type) (outsym - finfo->outsyms))) - return false; - obj_raw_syment_count (output_bfd) += - (outsym - finfo->outsyms) / bfd_coff_symesz (output_bfd); - - return true; -} - -/* Handle a link order which is supposed to generate a reloc. */ - -static boolean -xcoff_reloc_link_order (output_bfd, finfo, output_section, link_order) - bfd *output_bfd; - struct xcoff_final_link_info *finfo; - asection *output_section; - struct bfd_link_order *link_order; -{ - reloc_howto_type *howto; - struct xcoff_link_hash_entry *h; - asection *hsec; - bfd_vma hval; - bfd_vma addend; - struct internal_reloc *irel; - struct xcoff_link_hash_entry **rel_hash_ptr; - struct internal_ldrel ldrel; - - if (link_order->type == bfd_section_reloc_link_order) - { - /* We need to somehow locate a symbol in the right section. The - symbol must either have a value of zero, or we must adjust - the addend by the value of the symbol. FIXME: Write this - when we need it. The old linker couldn't handle this anyhow. */ - abort (); - } - - howto = bfd_reloc_type_lookup (output_bfd, link_order->u.reloc.p->reloc); - if (howto == NULL) - { - bfd_set_error (bfd_error_bad_value); - return false; - } - - h = ((struct xcoff_link_hash_entry *) - bfd_wrapped_link_hash_lookup (output_bfd, finfo->info, - link_order->u.reloc.p->u.name, - false, false, true)); - if (h == NULL) - { - if (! ((*finfo->info->callbacks->unattached_reloc) - (finfo->info, link_order->u.reloc.p->u.name, (bfd *) NULL, - (asection *) NULL, (bfd_vma) 0))) - return false; - return true; - } - - if (h->root.type == bfd_link_hash_common) - { - hsec = h->root.u.c.p->section; - hval = 0; - } - else if (h->root.type == bfd_link_hash_defined - || h->root.type == bfd_link_hash_defweak) - { - hsec = h->root.u.def.section; - hval = h->root.u.def.value; - } - else - { - hsec = NULL; - hval = 0; - } - - addend = link_order->u.reloc.p->addend; - if (hsec != NULL) - addend += (hsec->output_section->vma - + hsec->output_offset - + hval); - - if (addend != 0) - { - bfd_size_type size; - bfd_byte *buf; - bfd_reloc_status_type rstat; - boolean ok; - - size = bfd_get_reloc_size (howto); - buf = (bfd_byte *) bfd_zmalloc (size); - if (buf == NULL) - return false; - - rstat = _bfd_relocate_contents (howto, output_bfd, addend, buf); - switch (rstat) - { - case bfd_reloc_ok: - break; - default: - case bfd_reloc_outofrange: - abort (); - case bfd_reloc_overflow: - if (! ((*finfo->info->callbacks->reloc_overflow) - (finfo->info, link_order->u.reloc.p->u.name, - howto->name, addend, (bfd *) NULL, (asection *) NULL, - (bfd_vma) 0))) - { - free (buf); - return false; - } - break; - } - ok = bfd_set_section_contents (output_bfd, output_section, (PTR) buf, - (file_ptr) link_order->offset, size); - free (buf); - if (! ok) - return false; - } - - /* Store the reloc information in the right place. It will get - swapped and written out at the end of the final_link routine. */ - - irel = (finfo->section_info[output_section->target_index].relocs - + output_section->reloc_count); - rel_hash_ptr = (finfo->section_info[output_section->target_index].rel_hashes - + output_section->reloc_count); - - memset (irel, 0, sizeof (struct internal_reloc)); - *rel_hash_ptr = NULL; - - irel->r_vaddr = output_section->vma + link_order->offset; - - if (h->indx >= 0) - irel->r_symndx = h->indx; - else - { - /* Set the index to -2 to force this symbol to get written out. */ - h->indx = -2; - *rel_hash_ptr = h; - irel->r_symndx = 0; - } - - irel->r_type = howto->type; - irel->r_size = howto->bitsize - 1; - if (howto->complain_on_overflow == complain_overflow_signed) - irel->r_size |= 0x80; - - ++output_section->reloc_count; - - /* Now output the reloc to the .loader section. */ - - ldrel.l_vaddr = irel->r_vaddr; - - if (hsec != NULL) - { - const char *secname; - - secname = hsec->output_section->name; - - if (strcmp (secname, ".text") == 0) - ldrel.l_symndx = 0; - else if (strcmp (secname, ".data") == 0) - ldrel.l_symndx = 1; - else if (strcmp (secname, ".bss") == 0) - ldrel.l_symndx = 2; - else - { - (*_bfd_error_handler) - (_("%s: loader reloc in unrecognized section `%s'"), - bfd_get_filename (output_bfd), secname); - bfd_set_error (bfd_error_nonrepresentable_section); - return false; - } - } - else - { - if (h->ldindx < 0) - { - (*_bfd_error_handler) - (_("%s: `%s' in loader reloc but not loader sym"), - bfd_get_filename (output_bfd), - h->root.root.string); - bfd_set_error (bfd_error_bad_value); - return false; - } - ldrel.l_symndx = h->ldindx; - } - - ldrel.l_rtype = (irel->r_size << 8) | irel->r_type; - ldrel.l_rsecnm = output_section->target_index; - xcoff_swap_ldrel_out (output_bfd, &ldrel, finfo->ldrel); - ++finfo->ldrel; - - return true; -} - -/* Sort relocs by VMA. This is called via qsort. */ - -static int -xcoff_sort_relocs (p1, p2) - const PTR p1; - const PTR p2; -{ - const struct internal_reloc *r1 = (const struct internal_reloc *) p1; - const struct internal_reloc *r2 = (const struct internal_reloc *) p2; - - if (r1->r_vaddr > r2->r_vaddr) - return 1; - else if (r1->r_vaddr < r2->r_vaddr) - return -1; - else - return 0; -} - -/* This is the relocation function for the RS/6000/POWER/PowerPC. - This is currently the only processor which uses XCOFF; I hope that - will never change. */ - -boolean -_bfd_ppc_xcoff_relocate_section (output_bfd, info, input_bfd, - input_section, contents, relocs, syms, - sections) - bfd *output_bfd; - struct bfd_link_info *info; - bfd *input_bfd; - asection *input_section; - bfd_byte *contents; - struct internal_reloc *relocs; - struct internal_syment *syms; - asection **sections; -{ - struct internal_reloc *rel; - struct internal_reloc *relend; - - rel = relocs; - relend = rel + input_section->reloc_count; - for (; rel < relend; rel++) - { - long symndx; - struct xcoff_link_hash_entry *h; - struct internal_syment *sym; - bfd_vma addend; - bfd_vma val; - struct reloc_howto_struct howto; - bfd_reloc_status_type rstat; - - /* Relocation type R_REF is a special relocation type which is - merely used to prevent garbage collection from occurring for - the csect including the symbol which it references. */ - if (rel->r_type == R_REF) - continue; - - symndx = rel->r_symndx; - - if (symndx == -1) - { - h = NULL; - sym = NULL; - addend = 0; - } - else - { - h = obj_xcoff_sym_hashes (input_bfd)[symndx]; - sym = syms + symndx; - addend = - sym->n_value; - } - - /* We build the howto information on the fly. */ - - howto.type = rel->r_type; - howto.rightshift = 0; - howto.size = 2; - howto.bitsize = (rel->r_size & 0x1f) + 1; - howto.pc_relative = false; - howto.bitpos = 0; - if ((rel->r_size & 0x80) != 0) - howto.complain_on_overflow = complain_overflow_signed; - else - howto.complain_on_overflow = complain_overflow_bitfield; - howto.special_function = NULL; - howto.name = "internal"; - howto.partial_inplace = true; - if (howto.bitsize == 32) - howto.src_mask = howto.dst_mask = 0xffffffff; - else - { - howto.src_mask = howto.dst_mask = (1 << howto.bitsize) - 1; - if (howto.bitsize == 16) - howto.size = 1; - } - howto.pcrel_offset = false; - - val = 0; - - if (h == NULL) - { - asection *sec; - - if (symndx == -1) - { - sec = bfd_abs_section_ptr; - val = 0; - } - else - { - sec = sections[symndx]; - /* Hack to make sure we use the right TOC anchor value - if this reloc is against the TOC anchor. */ - if (sec->name[3] == '0' - && strcmp (sec->name, ".tc0") == 0) - val = xcoff_data (output_bfd)->toc; - else - val = (sec->output_section->vma - + sec->output_offset - + sym->n_value - - sec->vma); - } - } - else - { - if (h->root.type == bfd_link_hash_defined - || h->root.type == bfd_link_hash_defweak) - { - asection *sec; - - sec = h->root.u.def.section; - val = (h->root.u.def.value - + sec->output_section->vma - + sec->output_offset); - } - else if (h->root.type == bfd_link_hash_common) - { - asection *sec; - - sec = h->root.u.c.p->section; - val = (sec->output_section->vma - + sec->output_offset); - } - else if ((h->flags & XCOFF_DEF_DYNAMIC) != 0 - || (h->flags & XCOFF_IMPORT) != 0) - { - /* Every symbol in a shared object is defined somewhere. */ - val = 0; - } - else if (! info->relocateable) - { - if (! ((*info->callbacks->undefined_symbol) - (info, h->root.root.string, input_bfd, input_section, - rel->r_vaddr - input_section->vma))) - return false; - - /* Don't try to process the reloc. It can't help, and - it may generate another error. */ - continue; - } - } - - /* I took the relocation type definitions from two documents: - the PowerPC AIX Version 4 Application Binary Interface, First - Edition (April 1992), and the PowerOpen ABI, Big-Endian - 32-Bit Hardware Implementation (June 30, 1994). Differences - between the documents are noted below. */ - - switch (rel->r_type) - { - case R_RTB: - case R_RRTBI: - case R_RRTBA: - /* These relocs are defined by the PowerPC ABI to be - relative branches which use half of the difference - between the symbol and the program counter. I can't - quite figure out when this is useful. These relocs are - not defined by the PowerOpen ABI. */ - default: - (*_bfd_error_handler) - (_("%s: unsupported relocation type 0x%02x"), - bfd_get_filename (input_bfd), (unsigned int) rel->r_type); - bfd_set_error (bfd_error_bad_value); - return false; - case R_POS: - /* Simple positive relocation. */ - break; - case R_NEG: - /* Simple negative relocation. */ - val = - val; - break; - case R_REL: - /* Simple PC relative relocation. */ - howto.pc_relative = true; - break; - case R_TOC: - /* TOC relative relocation. The value in the instruction in - the input file is the offset from the input file TOC to - the desired location. We want the offset from the final - TOC to the desired location. We have: - isym = iTOC + in - iinsn = in + o - osym = oTOC + on - oinsn = on + o - so we must change insn by on - in. - */ - case R_GL: - /* Global linkage relocation. The value of this relocation - is the address of the entry in the TOC section. */ - case R_TCL: - /* Local object TOC address. I can't figure out the - difference between this and case R_GL. */ - case R_TRL: - /* TOC relative relocation. A TOC relative load instruction - which may be changed to a load address instruction. - FIXME: We don't currently implement this optimization. */ - case R_TRLA: - /* TOC relative relocation. This is a TOC relative load - address instruction which may be changed to a load - instruction. FIXME: I don't know if this is the correct - implementation. */ - if (h != NULL && h->smclas != XMC_TD) - { - if (h->toc_section == NULL) - { - (*_bfd_error_handler) - (_("%s: TOC reloc at 0x%x to symbol `%s' with no TOC entry"), - bfd_get_filename (input_bfd), rel->r_vaddr, - h->root.root.string); - bfd_set_error (bfd_error_bad_value); - return false; - } - - BFD_ASSERT ((h->flags & XCOFF_SET_TOC) == 0); - val = (h->toc_section->output_section->vma - + h->toc_section->output_offset); - } - - val = ((val - xcoff_data (output_bfd)->toc) - - (sym->n_value - xcoff_data (input_bfd)->toc)); - addend = 0; - break; - case R_BA: - /* Absolute branch. We don't want to mess with the lower - two bits of the instruction. */ - case R_CAI: - /* The PowerPC ABI defines this as an absolute call which - may be modified to become a relative call. The PowerOpen - ABI does not define this relocation type. */ - case R_RBA: - /* Absolute branch which may be modified to become a - relative branch. */ - case R_RBAC: - /* The PowerPC ABI defines this as an absolute branch to a - fixed address which may be modified to an absolute branch - to a symbol. The PowerOpen ABI does not define this - relocation type. */ - case R_RBRC: - /* The PowerPC ABI defines this as an absolute branch to a - fixed address which may be modified to a relative branch. - The PowerOpen ABI does not define this relocation type. */ - howto.src_mask &= ~3; - howto.dst_mask = howto.src_mask; - break; - case R_BR: - /* Relative branch. We don't want to mess with the lower - two bits of the instruction. */ - case R_CREL: - /* The PowerPC ABI defines this as a relative call which may - be modified to become an absolute call. The PowerOpen - ABI does not define this relocation type. */ - case R_RBR: - /* A relative branch which may be modified to become an - absolute branch. FIXME: We don't implement this, - although we should for symbols of storage mapping class - XMC_XO. */ - howto.pc_relative = true; - howto.src_mask &= ~3; - howto.dst_mask = howto.src_mask; - break; - case R_RL: - /* The PowerPC AIX ABI describes this as a load which may be - changed to a load address. The PowerOpen ABI says this - is the same as case R_POS. */ - break; - case R_RLA: - /* The PowerPC AIX ABI describes this as a load address - which may be changed to a load. The PowerOpen ABI says - this is the same as R_POS. */ - break; - } - - /* If we see an R_BR or R_RBR reloc which is jumping to global - linkage code, and it is followed by an appropriate cror nop - instruction, we replace the cror with lwz r2,20(r1). This - restores the TOC after the glink code. Contrariwise, if the - call is followed by a lwz r2,20(r1), but the call is not - going to global linkage code, we can replace the load with a - cror. */ - if ((rel->r_type == R_BR || rel->r_type == R_RBR) - && h != NULL - && h->root.type == bfd_link_hash_defined - && (rel->r_vaddr - input_section->vma + 8 - <= input_section->_cooked_size)) - { - bfd_byte *pnext; - unsigned long next; - - pnext = contents + (rel->r_vaddr - input_section->vma) + 4; - next = bfd_get_32 (input_bfd, pnext); - - /* The _ptrgl function is magic. It is used by the AIX - compiler to call a function through a pointer. */ - if (h->smclas == XMC_GL - || strcmp (h->root.root.string, "._ptrgl") == 0) - { - if (next == 0x4def7b82 /* cror 15,15,15 */ - || next == 0x4ffffb82) /* cror 31,31,31 */ - bfd_put_32 (input_bfd, 0x80410014, pnext); /* lwz r1,20(r1) */ - } - else - { - if (next == 0x80410014) /* lwz r1,20(r1) */ - bfd_put_32 (input_bfd, 0x4ffffb82, pnext); /* cror 31,31,31 */ - } - } - - /* A PC relative reloc includes the section address. */ - if (howto.pc_relative) - addend += input_section->vma; - - rstat = _bfd_final_link_relocate (&howto, input_bfd, input_section, - contents, - rel->r_vaddr - input_section->vma, - val, addend); - - switch (rstat) - { - default: - abort (); - case bfd_reloc_ok: - break; - case bfd_reloc_overflow: - { - const char *name; - char buf[SYMNMLEN + 1]; - char howto_name[10]; - - if (symndx == -1) - name = "*ABS*"; - else if (h != NULL) - name = h->root.root.string; - else - { - name = _bfd_coff_internal_syment_name (input_bfd, sym, buf); - if (name == NULL) - return false; - } - sprintf (howto_name, "0x%02x", rel->r_type); - - if (! ((*info->callbacks->reloc_overflow) - (info, name, howto_name, (bfd_vma) 0, input_bfd, - input_section, rel->r_vaddr - input_section->vma))) - return false; - } - } - } - - return true; -} |