diff options
Diffstat (limited to 'bfd/nlm32-ppc.c')
| -rw-r--r-- | bfd/nlm32-ppc.c | 1045 |
1 files changed, 0 insertions, 1045 deletions
diff --git a/bfd/nlm32-ppc.c b/bfd/nlm32-ppc.c deleted file mode 100644 index 0401d1efc71..00000000000 --- a/bfd/nlm32-ppc.c +++ /dev/null @@ -1,1045 +0,0 @@ -/* Support for 32-bit PowerPC NLM (NetWare Loadable Module) - Copyright 1994, 1995, 2000 Free Software Foundation, Inc. - -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 "libbfd.h" - -/* The format of a PowerPC NLM changed. Define OLDFORMAT to get the - old format. */ - -#define ARCH_SIZE 32 - -#include "nlm/ppc-ext.h" -#define Nlm_External_Fixed_Header Nlm32_powerpc_External_Fixed_Header - -#include "libnlm.h" - -#ifdef OLDFORMAT -static boolean nlm_powerpc_backend_object_p - PARAMS ((bfd *)); -static boolean nlm_powerpc_write_prefix - PARAMS ((bfd *)); -#endif - -static boolean nlm_powerpc_read_reloc - PARAMS ((bfd *, nlmNAME(symbol_type) *, asection **, arelent *)); -static boolean nlm_powerpc_mangle_relocs - PARAMS ((bfd *, asection *, PTR, bfd_vma, bfd_size_type)); -static boolean nlm_powerpc_read_import - PARAMS ((bfd *, nlmNAME(symbol_type) *)); - -#ifdef OLDFORMAT -static boolean nlm_powerpc_write_reloc - PARAMS ((bfd *, asection *, arelent *, int)); -#endif - -static boolean nlm_powerpc_write_import - PARAMS ((bfd *, asection *, arelent *)); -static boolean nlm_powerpc_write_external - PARAMS ((bfd *, bfd_size_type, asymbol *, struct reloc_and_sec *)); - -#ifndef OLDFORMAT -static boolean nlm_powerpc_set_public_section - PARAMS ((bfd *, nlmNAME(symbol_type) *)); -static bfd_vma nlm_powerpc_get_public_offset - PARAMS ((bfd *, asymbol *)); -#endif - -#ifdef OLDFORMAT - -/* The prefix header is only used in the old format. */ - -/* PowerPC NLM's have a prefix header before the standard NLM. This - function reads it in, verifies the version, and seeks the bfd to - the location before the regular NLM header. */ - -static boolean -nlm_powerpc_backend_object_p (abfd) - bfd *abfd; -{ - struct nlm32_powerpc_external_prefix_header s; - - if (bfd_read ((PTR) &s, sizeof s, 1, abfd) != sizeof s) - return false; - - if (memcmp (s.signature, NLM32_POWERPC_SIGNATURE, sizeof s.signature) != 0 - || bfd_h_get_32 (abfd, s.headerVersion) != NLM32_POWERPC_HEADER_VERSION) - return false; - - return true; -} - -/* Write out the prefix. */ - -static boolean -nlm_powerpc_write_prefix (abfd) - bfd *abfd; -{ - struct nlm32_powerpc_external_prefix_header s; - - memset (&s, 0, sizeof s); - memcpy (s.signature, NLM32_POWERPC_SIGNATURE, sizeof s.signature); - bfd_h_put_32 (abfd, (bfd_vma) NLM32_POWERPC_HEADER_VERSION, s.headerVersion); - bfd_h_put_32 (abfd, (bfd_vma) 0, s.origins); - - /* FIXME: What should we do about the date? */ - - if (bfd_write ((PTR) &s, sizeof s, 1, abfd) != sizeof s) - return false; - - return true; -} - -#endif /* OLDFORMAT */ - -#ifndef OLDFORMAT - -/* There is only one type of reloc in a PowerPC NLM. */ - -static reloc_howto_type nlm_powerpc_howto = - 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 */ - "32", /* name */ - true, /* partial_inplace */ - 0xffffffff, /* src_mask */ - 0xffffffff, /* dst_mask */ - false); /* pcrel_offset */ - -/* Read a PowerPC NLM reloc. */ - -static boolean -nlm_powerpc_read_reloc (abfd, sym, secp, rel) - bfd *abfd; - nlmNAME(symbol_type) *sym; - asection **secp; - arelent *rel; -{ - bfd_byte temp[4]; - bfd_vma val; - const char *name; - - if (bfd_read (temp, sizeof (temp), 1, abfd) != sizeof (temp)) - return false; - - val = bfd_get_32 (abfd, temp); - - /* The value is a word offset into either the code or data segment. - This is the location which needs to be adjusted. - - The high bit is 0 if the value is an offset into the data - segment, or 1 if the value is an offset into the text segment. - - If this is a relocation fixup rather than an imported symbol (the - sym argument is NULL), then the second most significant bit is 0 - if the address of the data segment should be added to the - location addressed by the value, or 1 if the address of the text - segment should be added. - - If this is an imported symbol, the second most significant bit is - not used and must be 0. */ - - if ((val & NLM_HIBIT) == 0) - name = NLM_INITIALIZED_DATA_NAME; - else - { - name = NLM_CODE_NAME; - val &=~ NLM_HIBIT; - } - *secp = bfd_get_section_by_name (abfd, name); - - if (sym == NULL) - { - if ((val & (NLM_HIBIT >> 1)) == 0) - name = NLM_INITIALIZED_DATA_NAME; - else - { - name = NLM_CODE_NAME; - val &=~ (NLM_HIBIT >> 1); - } - rel->sym_ptr_ptr = bfd_get_section_by_name (abfd, name)->symbol_ptr_ptr; - } - - rel->howto = &nlm_powerpc_howto; - - rel->address = val << 2; - rel->addend = 0; - - return true; -} - -#else /* OLDFORMAT */ - -/* This reloc handling is only applicable to the old format. */ - -/* How to process the various reloc types. PowerPC NLMs use XCOFF - reloc types, and I have just copied the XCOFF reloc table here. */ - -static reloc_howto_type nlm_powerpc_howto_table[] = -{ - /* Standard 32 bit relocation. */ - 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 */ - - /* 32 bit relocation, but store negative value. */ - HOWTO (1, /* 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_NEG", /* name */ - true, /* partial_inplace */ - 0xffffffff, /* src_mask */ - 0xffffffff, /* dst_mask */ - false), /* pcrel_offset */ - - /* 32 bit PC relative relocation. */ - HOWTO (2, /* type */ - 0, /* rightshift */ - 2, /* size (0 = byte, 1 = short, 2 = long) */ - 32, /* bitsize */ - true, /* pc_relative */ - 0, /* bitpos */ - complain_overflow_signed, /* complain_on_overflow */ - 0, /* special_function */ - "R_REL", /* name */ - true, /* partial_inplace */ - 0xffffffff, /* src_mask */ - 0xffffffff, /* dst_mask */ - false), /* pcrel_offset */ - - /* 16 bit TOC relative relocation. */ - HOWTO (3, /* type */ - 0, /* rightshift */ - 1, /* size (0 = byte, 1 = short, 2 = long) */ - 16, /* bitsize */ - false, /* pc_relative */ - 0, /* bitpos */ - complain_overflow_signed, /* complain_on_overflow */ - 0, /* special_function */ - "R_TOC", /* name */ - true, /* partial_inplace */ - 0xffff, /* src_mask */ - 0xffff, /* dst_mask */ - false), /* pcrel_offset */ - - /* I don't really know what this is. */ - HOWTO (4, /* type */ - 1, /* 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_RTB", /* name */ - true, /* partial_inplace */ - 0xffffffff, /* src_mask */ - 0xffffffff, /* dst_mask */ - false), /* pcrel_offset */ - - /* External TOC relative symbol. */ - HOWTO (5, /* type */ - 0, /* rightshift */ - 2, /* size (0 = byte, 1 = short, 2 = long) */ - 16, /* bitsize */ - false, /* pc_relative */ - 0, /* bitpos */ - complain_overflow_bitfield, /* complain_on_overflow */ - 0, /* special_function */ - "R_GL", /* name */ - true, /* partial_inplace */ - 0xffff, /* src_mask */ - 0xffff, /* dst_mask */ - false), /* pcrel_offset */ - - /* Local TOC relative symbol. */ - HOWTO (6, /* type */ - 0, /* rightshift */ - 2, /* size (0 = byte, 1 = short, 2 = long) */ - 16, /* bitsize */ - false, /* pc_relative */ - 0, /* bitpos */ - complain_overflow_bitfield, /* complain_on_overflow */ - 0, /* special_function */ - "R_TCL", /* name */ - true, /* partial_inplace */ - 0xffff, /* src_mask */ - 0xffff, /* dst_mask */ - false), /* pcrel_offset */ - - { 7 }, - - /* Non modifiable absolute branch. */ - HOWTO (8, /* type */ - 0, /* rightshift */ - 2, /* size (0 = byte, 1 = short, 2 = long) */ - 26, /* bitsize */ - false, /* pc_relative */ - 0, /* bitpos */ - complain_overflow_bitfield, /* complain_on_overflow */ - 0, /* special_function */ - "R_BA", /* name */ - true, /* partial_inplace */ - 0x3fffffc, /* src_mask */ - 0x3fffffc, /* dst_mask */ - false), /* pcrel_offset */ - - { 9 }, - - /* Non modifiable relative branch. */ - HOWTO (0xa, /* type */ - 0, /* rightshift */ - 2, /* size (0 = byte, 1 = short, 2 = long) */ - 26, /* bitsize */ - true, /* pc_relative */ - 0, /* bitpos */ - complain_overflow_signed, /* complain_on_overflow */ - 0, /* special_function */ - "R_BR", /* name */ - true, /* partial_inplace */ - 0x3fffffc, /* src_mask */ - 0x3fffffc, /* dst_mask */ - false), /* pcrel_offset */ - - { 0xb }, - - /* Indirect load. */ - HOWTO (0xc, /* type */ - 0, /* rightshift */ - 2, /* size (0 = byte, 1 = short, 2 = long) */ - 16, /* bitsize */ - false, /* pc_relative */ - 0, /* bitpos */ - complain_overflow_bitfield, /* complain_on_overflow */ - 0, /* special_function */ - "R_RL", /* name */ - true, /* partial_inplace */ - 0xffff, /* src_mask */ - 0xffff, /* dst_mask */ - false), /* pcrel_offset */ - - /* Load address. */ - HOWTO (0xd, /* type */ - 0, /* rightshift */ - 2, /* size (0 = byte, 1 = short, 2 = long) */ - 16, /* bitsize */ - false, /* pc_relative */ - 0, /* bitpos */ - complain_overflow_bitfield, /* complain_on_overflow */ - 0, /* special_function */ - "R_RLA", /* name */ - true, /* partial_inplace */ - 0xffff, /* src_mask */ - 0xffff, /* dst_mask */ - false), /* pcrel_offset */ - - { 0xe }, - - /* Non-relocating reference. */ - HOWTO (0xf, /* 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_REF", /* name */ - false, /* partial_inplace */ - 0, /* src_mask */ - 0, /* dst_mask */ - false), /* pcrel_offset */ - - { 0x10 }, - { 0x11 }, - - /* TOC relative indirect load. */ - HOWTO (0x12, /* type */ - 0, /* rightshift */ - 2, /* size (0 = byte, 1 = short, 2 = long) */ - 16, /* bitsize */ - false, /* pc_relative */ - 0, /* bitpos */ - complain_overflow_bitfield, /* complain_on_overflow */ - 0, /* special_function */ - "R_TRL", /* name */ - true, /* partial_inplace */ - 0xffff, /* src_mask */ - 0xffff, /* dst_mask */ - false), /* pcrel_offset */ - - /* TOC relative load address. */ - HOWTO (0x13, /* type */ - 0, /* rightshift */ - 2, /* size (0 = byte, 1 = short, 2 = long) */ - 16, /* bitsize */ - false, /* pc_relative */ - 0, /* bitpos */ - complain_overflow_bitfield, /* complain_on_overflow */ - 0, /* special_function */ - "R_TRLA", /* name */ - true, /* partial_inplace */ - 0xffff, /* src_mask */ - 0xffff, /* dst_mask */ - false), /* pcrel_offset */ - - /* Modifiable relative branch. */ - HOWTO (0x14, /* type */ - 1, /* 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_RRTBI", /* name */ - true, /* partial_inplace */ - 0xffffffff, /* src_mask */ - 0xffffffff, /* dst_mask */ - false), /* pcrel_offset */ - - /* Modifiable absolute branch. */ - HOWTO (0x15, /* type */ - 1, /* 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_RRTBA", /* name */ - true, /* partial_inplace */ - 0xffffffff, /* src_mask */ - 0xffffffff, /* dst_mask */ - false), /* pcrel_offset */ - - /* Modifiable call absolute indirect. */ - HOWTO (0x16, /* type */ - 0, /* rightshift */ - 2, /* size (0 = byte, 1 = short, 2 = long) */ - 16, /* bitsize */ - false, /* pc_relative */ - 0, /* bitpos */ - complain_overflow_bitfield, /* complain_on_overflow */ - 0, /* special_function */ - "R_CAI", /* name */ - true, /* partial_inplace */ - 0xffff, /* src_mask */ - 0xffff, /* dst_mask */ - false), /* pcrel_offset */ - - /* Modifiable call relative. */ - HOWTO (0x17, /* type */ - 0, /* rightshift */ - 2, /* size (0 = byte, 1 = short, 2 = long) */ - 16, /* bitsize */ - false, /* pc_relative */ - 0, /* bitpos */ - complain_overflow_bitfield, /* complain_on_overflow */ - 0, /* special_function */ - "R_REL", /* name */ - true, /* partial_inplace */ - 0xffff, /* src_mask */ - 0xffff, /* dst_mask */ - false), /* pcrel_offset */ - - /* Modifiable branch absolute. */ - HOWTO (0x18, /* type */ - 0, /* rightshift */ - 2, /* size (0 = byte, 1 = short, 2 = long) */ - 16, /* bitsize */ - false, /* pc_relative */ - 0, /* bitpos */ - complain_overflow_bitfield, /* complain_on_overflow */ - 0, /* special_function */ - "R_RBA", /* name */ - true, /* partial_inplace */ - 0xffff, /* src_mask */ - 0xffff, /* dst_mask */ - false), /* pcrel_offset */ - - /* Modifiable branch absolute. */ - HOWTO (0x19, /* type */ - 0, /* rightshift */ - 2, /* size (0 = byte, 1 = short, 2 = long) */ - 16, /* bitsize */ - false, /* pc_relative */ - 0, /* bitpos */ - complain_overflow_bitfield, /* complain_on_overflow */ - 0, /* special_function */ - "R_RBAC", /* name */ - true, /* partial_inplace */ - 0xffff, /* src_mask */ - 0xffff, /* dst_mask */ - false), /* pcrel_offset */ - - /* Modifiable branch relative. */ - HOWTO (0x1a, /* type */ - 0, /* rightshift */ - 2, /* size (0 = byte, 1 = short, 2 = long) */ - 26, /* bitsize */ - false, /* pc_relative */ - 0, /* bitpos */ - complain_overflow_signed, /* complain_on_overflow */ - 0, /* special_function */ - "R_REL", /* name */ - true, /* partial_inplace */ - 0xffff, /* src_mask */ - 0xffff, /* dst_mask */ - false), /* pcrel_offset */ - - /* Modifiable branch absolute. */ - HOWTO (0x1b, /* type */ - 0, /* rightshift */ - 2, /* size (0 = byte, 1 = short, 2 = long) */ - 16, /* bitsize */ - false, /* pc_relative */ - 0, /* bitpos */ - complain_overflow_bitfield, /* complain_on_overflow */ - 0, /* special_function */ - "R_REL", /* name */ - true, /* partial_inplace */ - 0xffff, /* src_mask */ - 0xffff, /* dst_mask */ - false) /* pcrel_offset */ -}; - -#define HOWTO_COUNT (sizeof nlm_powerpc_howto_table \ - / sizeof nlm_powerpc_howto_table[0]) - -/* Read a PowerPC NLM reloc. */ - -static boolean -nlm_powerpc_read_reloc (abfd, sym, secp, rel) - bfd *abfd; - nlmNAME(symbol_type) *sym; - asection **secp; - arelent *rel; -{ - struct nlm32_powerpc_external_reloc ext; - bfd_vma l_vaddr; - unsigned long l_symndx; - int l_rtype; - int l_rsecnm; - asection *code_sec, *data_sec, *bss_sec; - - /* Read the reloc from the file. */ - if (bfd_read (&ext, sizeof ext, 1, abfd) != sizeof ext) - return false; - - /* Swap in the fields. */ - l_vaddr = bfd_h_get_32 (abfd, ext.l_vaddr); - l_symndx = bfd_h_get_32 (abfd, ext.l_symndx); - l_rtype = bfd_h_get_16 (abfd, ext.l_rtype); - l_rsecnm = bfd_h_get_16 (abfd, ext.l_rsecnm); - - /* Get the sections now, for convenience. */ - code_sec = bfd_get_section_by_name (abfd, NLM_CODE_NAME); - data_sec = bfd_get_section_by_name (abfd, NLM_INITIALIZED_DATA_NAME); - bss_sec = bfd_get_section_by_name (abfd, NLM_UNINITIALIZED_DATA_NAME); - - /* Work out the arelent fields. */ - if (sym != NULL) - { - /* This is an import. sym_ptr_ptr is filled in by - nlm_canonicalize_reloc. */ - rel->sym_ptr_ptr = NULL; - } - else - { - asection *sec; - - if (l_symndx == 0) - sec = code_sec; - else if (l_symndx == 1) - sec = data_sec; - else if (l_symndx == 2) - sec = bss_sec; - else - { - bfd_set_error (bfd_error_bad_value); - return false; - } - - rel->sym_ptr_ptr = sec->symbol_ptr_ptr; - } - - rel->addend = 0; - - BFD_ASSERT ((l_rtype & 0xff) < HOWTO_COUNT); - - rel->howto = nlm_powerpc_howto_table + (l_rtype & 0xff); - - BFD_ASSERT (rel->howto->name != NULL - && ((l_rtype & 0x8000) != 0 - ? (rel->howto->complain_on_overflow - == complain_overflow_signed) - : (rel->howto->complain_on_overflow - == complain_overflow_bitfield)) - && ((l_rtype >> 8) & 0x1f) == rel->howto->bitsize - 1); - - if (l_rsecnm == 0) - *secp = code_sec; - else if (l_rsecnm == 1) - { - *secp = data_sec; - l_vaddr -= bfd_section_size (abfd, code_sec); - } - else - { - bfd_set_error (bfd_error_bad_value); - return false; - } - - rel->address = l_vaddr; - - return true; -} - -#endif /* OLDFORMAT */ - -/* Mangle PowerPC NLM relocs for output. */ - -static boolean -nlm_powerpc_mangle_relocs (abfd, sec, data, offset, count) - bfd *abfd ATTRIBUTE_UNUSED; - asection *sec ATTRIBUTE_UNUSED; - PTR data ATTRIBUTE_UNUSED; - bfd_vma offset ATTRIBUTE_UNUSED; - bfd_size_type count ATTRIBUTE_UNUSED; -{ - return true; -} - -/* Read a PowerPC NLM import record */ - -static boolean -nlm_powerpc_read_import (abfd, sym) - bfd *abfd; - nlmNAME(symbol_type) *sym; -{ - struct nlm_relent *nlm_relocs; /* relocation records for symbol */ - bfd_size_type rcount; /* number of relocs */ - bfd_byte temp[NLM_TARGET_LONG_SIZE]; /* temporary 32-bit value */ - unsigned char symlength; /* length of symbol name */ - char *name; - - if (bfd_read ((PTR) &symlength, sizeof (symlength), 1, abfd) - != sizeof (symlength)) - return (false); - sym -> symbol.the_bfd = abfd; - name = bfd_alloc (abfd, symlength + 1); - if (name == NULL) - return false; - if (bfd_read (name, symlength, 1, abfd) != symlength) - return (false); - name[symlength] = '\0'; - sym -> symbol.name = name; - sym -> symbol.flags = 0; - sym -> symbol.value = 0; - sym -> symbol.section = bfd_und_section_ptr; - if (bfd_read ((PTR) temp, sizeof (temp), 1, abfd) != sizeof (temp)) - return (false); - rcount = bfd_h_get_32 (abfd, temp); - nlm_relocs = ((struct nlm_relent *) - bfd_alloc (abfd, rcount * sizeof (struct nlm_relent))); - if (nlm_relocs == (struct nlm_relent *) NULL) - return false; - sym -> relocs = nlm_relocs; - sym -> rcnt = 0; - while (sym -> rcnt < rcount) - { - asection *section; - - if (nlm_powerpc_read_reloc (abfd, sym, §ion, - &nlm_relocs -> reloc) - == false) - return false; - nlm_relocs -> section = section; - nlm_relocs++; - sym -> rcnt++; - } - return true; -} - -#ifndef OLDFORMAT - -/* Write a PowerPC NLM reloc. */ - -static boolean -nlm_powerpc_write_import (abfd, sec, rel) - bfd *abfd; - asection *sec; - arelent *rel; -{ - asymbol *sym; - bfd_vma val; - bfd_byte temp[4]; - - /* PowerPC NetWare only supports one kind of reloc. */ - if (rel->addend != 0 - || rel->howto == NULL - || rel->howto->rightshift != 0 - || rel->howto->size != 2 - || rel->howto->bitsize != 32 - || rel->howto->bitpos != 0 - || rel->howto->pc_relative - || (rel->howto->src_mask != 0xffffffff && rel->addend != 0) - || rel->howto->dst_mask != 0xffffffff) - { - bfd_set_error (bfd_error_invalid_operation); - return false; - } - - sym = *rel->sym_ptr_ptr; - - /* The value we write out is the offset into the appropriate - segment, rightshifted by two. This offset is the section vma, - adjusted by the vma of the lowest section in that segment, plus - the address of the relocation. */ - val = bfd_get_section_vma (abfd, sec) + rel->address; - if ((val & 3) != 0) - { - bfd_set_error (bfd_error_bad_value); - return false; - } - val >>= 2; - - /* The high bit is 0 if the reloc is in the data section, or 1 if - the reloc is in the code section. */ - if (bfd_get_section_flags (abfd, sec) & SEC_DATA) - val -= nlm_get_data_low (abfd); - else - { - val -= nlm_get_text_low (abfd); - val |= NLM_HIBIT; - } - - if (! bfd_is_und_section (bfd_get_section (sym))) - { - /* This is an internal relocation fixup. The second most - significant bit is 0 if this is a reloc against the data - segment, or 1 if it is a reloc against the text segment. */ - if (bfd_get_section_flags (abfd, bfd_get_section (sym)) & SEC_CODE) - val |= NLM_HIBIT >> 1; - } - - bfd_put_32 (abfd, val, temp); - if (bfd_write (temp, sizeof (temp), 1, abfd) != sizeof (temp)) - return false; - - return true; -} - -#else /* OLDFORMAT */ - -/* This is used for the reloc handling in the old format. */ - -/* Write a PowerPC NLM reloc. */ - -static boolean -nlm_powerpc_write_reloc (abfd, sec, rel, indx) - bfd *abfd; - asection *sec; - arelent *rel; - int indx; -{ - struct nlm32_powerpc_external_reloc ext; - asection *code_sec, *data_sec, *bss_sec; - asymbol *sym; - asection *symsec; - unsigned long l_symndx; - int l_rtype; - int l_rsecnm; - reloc_howto_type *howto; - bfd_size_type address; - - /* Get the sections now, for convenience. */ - code_sec = bfd_get_section_by_name (abfd, NLM_CODE_NAME); - data_sec = bfd_get_section_by_name (abfd, NLM_INITIALIZED_DATA_NAME); - bss_sec = bfd_get_section_by_name (abfd, NLM_UNINITIALIZED_DATA_NAME); - - sym = *rel->sym_ptr_ptr; - symsec = bfd_get_section (sym); - if (indx != -1) - { - BFD_ASSERT (bfd_is_und_section (symsec)); - l_symndx = indx + 3; - } - else - { - if (symsec == code_sec) - l_symndx = 0; - else if (symsec == data_sec) - l_symndx = 1; - else if (symsec == bss_sec) - l_symndx = 2; - else - { - bfd_set_error (bfd_error_bad_value); - return false; - } - } - - bfd_h_put_32 (abfd, (bfd_vma) l_symndx, ext.l_symndx); - - for (howto = nlm_powerpc_howto_table; - howto < nlm_powerpc_howto_table + HOWTO_COUNT; - howto++) - { - if (howto->rightshift == rel->howto->rightshift - && howto->size == rel->howto->size - && howto->bitsize == rel->howto->bitsize - && howto->pc_relative == rel->howto->pc_relative - && howto->bitpos == rel->howto->bitpos - && (howto->partial_inplace == rel->howto->partial_inplace - || (! rel->howto->partial_inplace - && rel->addend == 0)) - && (howto->src_mask == rel->howto->src_mask - || (rel->howto->src_mask == 0 - && rel->addend == 0)) - && howto->dst_mask == rel->howto->dst_mask - && howto->pcrel_offset == rel->howto->pcrel_offset) - break; - } - if (howto >= nlm_powerpc_howto_table + HOWTO_COUNT) - { - bfd_set_error (bfd_error_bad_value); - return false; - } - - l_rtype = howto->type; - if (howto->complain_on_overflow == complain_overflow_signed) - l_rtype |= 0x8000; - l_rtype |= (howto->bitsize - 1) << 8; - bfd_h_put_16 (abfd, (bfd_vma) l_rtype, ext.l_rtype); - - address = rel->address; - - if (sec == code_sec) - l_rsecnm = 0; - else if (sec == data_sec) - { - l_rsecnm = 1; - address += bfd_section_size (abfd, code_sec); - } - else - { - bfd_set_error (bfd_error_bad_value); - return false; - } - - bfd_h_put_16 (abfd, (bfd_vma) l_rsecnm, ext.l_rsecnm); - bfd_h_put_32 (abfd, (bfd_vma) address, ext.l_vaddr); - - if (bfd_write (&ext, sizeof ext, 1, abfd) != sizeof ext) - return false; - - return true; -} - -/* Write a PowerPC NLM import. */ - -static boolean -nlm_powerpc_write_import (abfd, sec, rel) - bfd *abfd; - asection *sec; - arelent *rel; -{ - return nlm_powerpc_write_reloc (abfd, sec, rel, -1); -} - -#endif /* OLDFORMAT */ - -/* Write a PowerPC NLM external symbol. This routine keeps a static - count of the symbol index. FIXME: I don't know if this is - necessary, and the index never gets reset. */ - -static boolean -nlm_powerpc_write_external (abfd, count, sym, relocs) - bfd *abfd; - bfd_size_type count; - asymbol *sym; - struct reloc_and_sec *relocs; -{ - unsigned int i; - bfd_byte len; - unsigned char temp[NLM_TARGET_LONG_SIZE]; -#ifdef OLDFORMAT - static int indx; -#endif - - len = strlen (sym->name); - if ((bfd_write (&len, sizeof (bfd_byte), 1, abfd) != sizeof (bfd_byte)) - || bfd_write (sym->name, len, 1, abfd) != len) - return false; - - bfd_put_32 (abfd, count, temp); - if (bfd_write (temp, sizeof (temp), 1, abfd) != sizeof (temp)) - return false; - - for (i = 0; i < count; i++) - { -#ifndef OLDFORMAT - if (! nlm_powerpc_write_import (abfd, relocs[i].sec, relocs[i].rel)) - return false; -#else - if (! nlm_powerpc_write_reloc (abfd, relocs[i].sec, - relocs[i].rel, indx)) - return false; -#endif - } - -#ifdef OLDFORMAT - ++indx; -#endif - - return true; -} - -#ifndef OLDFORMAT - -/* PowerPC Netware uses a word offset, not a byte offset, for public - symbols. */ - -/* Set the section for a public symbol. */ - -static boolean -nlm_powerpc_set_public_section (abfd, sym) - bfd *abfd; - nlmNAME(symbol_type) *sym; -{ - if (sym->symbol.value & NLM_HIBIT) - { - sym->symbol.value &= ~NLM_HIBIT; - sym->symbol.flags |= BSF_FUNCTION; - sym->symbol.section = - bfd_get_section_by_name (abfd, NLM_CODE_NAME); - } - else - { - sym->symbol.section = - bfd_get_section_by_name (abfd, NLM_INITIALIZED_DATA_NAME); - } - - sym->symbol.value <<= 2; - - return true; -} - -/* Get the offset to write out for a public symbol. */ - -static bfd_vma -nlm_powerpc_get_public_offset (abfd, sym) - bfd *abfd; - asymbol *sym; -{ - bfd_vma offset; - asection *sec; - - offset = bfd_asymbol_value (sym); - sec = bfd_get_section (sym); - if (sec->flags & SEC_CODE) - { - offset -= nlm_get_text_low (abfd); - offset |= NLM_HIBIT; - } - else if (sec->flags & (SEC_DATA | SEC_ALLOC)) - { - /* SEC_ALLOC is for the .bss section. */ - offset -= nlm_get_data_low (abfd); - } - else - { - /* We can't handle an exported symbol that is not in the code or - data segment. */ - bfd_set_error (bfd_error_invalid_operation); - /* FIXME: No way to return error. */ - abort (); - } - - return offset; -} - -#endif /* ! defined (OLDFORMAT) */ - -#include "nlmswap.h" - -static const struct nlm_backend_data nlm32_powerpc_backend = -{ - "NetWare PowerPC Module \032", - sizeof (Nlm32_powerpc_External_Fixed_Header), -#ifndef OLDFORMAT - 0, /* optional_prefix_size */ -#else - sizeof (struct nlm32_powerpc_external_prefix_header), -#endif - bfd_arch_powerpc, - 0, - false, -#ifndef OLDFORMAT - 0, /* backend_object_p */ - 0, /* write_prefix */ -#else - nlm_powerpc_backend_object_p, - nlm_powerpc_write_prefix, -#endif - nlm_powerpc_read_reloc, - nlm_powerpc_mangle_relocs, - nlm_powerpc_read_import, - nlm_powerpc_write_import, -#ifndef OLDFORMAT - nlm_powerpc_set_public_section, - nlm_powerpc_get_public_offset, -#else - 0, /* set_public_section */ - 0, /* get_public_offset */ -#endif - nlm_swap_fixed_header_in, - nlm_swap_fixed_header_out, - nlm_powerpc_write_external, - 0, /* write_export */ -}; - -#define TARGET_BIG_NAME "nlm32-powerpc" -#define TARGET_BIG_SYM nlmNAME(powerpc_vec) -#define TARGET_BACKEND_DATA &nlm32_powerpc_backend - -#include "nlm-target.h" |