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Diffstat (limited to 'bfd/aoutx.h')
| -rw-r--r-- | bfd/aoutx.h | 5737 |
1 files changed, 0 insertions, 5737 deletions
diff --git a/bfd/aoutx.h b/bfd/aoutx.h deleted file mode 100644 index 6119564e237..00000000000 --- a/bfd/aoutx.h +++ /dev/null @@ -1,5737 +0,0 @@ -/* BFD semi-generic back-end for a.out binaries. - Copyright 1990, 1991, 1992, 1993, 1994, 1995, 1996, 1997, 1998, 2000, - 2001 - Free Software Foundation, Inc. - Written by 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. */ - -/* -SECTION - a.out backends - -DESCRIPTION - - BFD supports a number of different flavours of a.out format, - though the major differences are only the sizes of the - structures on disk, and the shape of the relocation - information. - - The support is split into a basic support file @file{aoutx.h} - and other files which derive functions from the base. One - derivation file is @file{aoutf1.h} (for a.out flavour 1), and - adds to the basic a.out functions support for sun3, sun4, 386 - and 29k a.out files, to create a target jump vector for a - specific target. - - This information is further split out into more specific files - for each machine, including @file{sunos.c} for sun3 and sun4, - @file{newsos3.c} for the Sony NEWS, and @file{demo64.c} for a - demonstration of a 64 bit a.out format. - - The base file @file{aoutx.h} defines general mechanisms for - reading and writing records to and from disk and various - other methods which BFD requires. It is included by - @file{aout32.c} and @file{aout64.c} to form the names - <<aout_32_swap_exec_header_in>>, <<aout_64_swap_exec_header_in>>, etc. - - As an example, this is what goes on to make the back end for a - sun4, from @file{aout32.c}: - -| #define ARCH_SIZE 32 -| #include "aoutx.h" - - Which exports names: - -| ... -| aout_32_canonicalize_reloc -| aout_32_find_nearest_line -| aout_32_get_lineno -| aout_32_get_reloc_upper_bound -| ... - - from @file{sunos.c}: - -| #define TARGET_NAME "a.out-sunos-big" -| #define VECNAME sunos_big_vec -| #include "aoutf1.h" - - requires all the names from @file{aout32.c}, and produces the jump vector - -| sunos_big_vec - - The file @file{host-aout.c} is a special case. It is for a large set - of hosts that use ``more or less standard'' a.out files, and - for which cross-debugging is not interesting. It uses the - standard 32-bit a.out support routines, but determines the - file offsets and addresses of the text, data, and BSS - sections, the machine architecture and machine type, and the - entry point address, in a host-dependent manner. Once these - values have been determined, generic code is used to handle - the object file. - - When porting it to run on a new system, you must supply: - -| HOST_PAGE_SIZE -| HOST_SEGMENT_SIZE -| HOST_MACHINE_ARCH (optional) -| HOST_MACHINE_MACHINE (optional) -| HOST_TEXT_START_ADDR -| HOST_STACK_END_ADDR - - in the file @file{../include/sys/h-@var{XXX}.h} (for your host). These - values, plus the structures and macros defined in @file{a.out.h} on - your host system, will produce a BFD target that will access - ordinary a.out files on your host. To configure a new machine - to use @file{host-aout.c}, specify: - -| TDEFAULTS = -DDEFAULT_VECTOR=host_aout_big_vec -| TDEPFILES= host-aout.o trad-core.o - - in the @file{config/@var{XXX}.mt} file, and modify @file{configure.in} - to use the - @file{@var{XXX}.mt} file (by setting "<<bfd_target=XXX>>") when your - configuration is selected. - -*/ - -/* Some assumptions: - * Any BFD with D_PAGED set is ZMAGIC, and vice versa. - Doesn't matter what the setting of WP_TEXT is on output, but it'll - get set on input. - * Any BFD with D_PAGED clear and WP_TEXT set is NMAGIC. - * Any BFD with both flags clear is OMAGIC. - (Just want to make these explicit, so the conditions tested in this - file make sense if you're more familiar with a.out than with BFD.) */ - -#define KEEPIT udata.i - -#include <ctype.h> -#include "bfd.h" -#include "sysdep.h" -#include "bfdlink.h" - -#include "libaout.h" -#include "libbfd.h" -#include "aout/aout64.h" -#include "aout/stab_gnu.h" -#include "aout/ar.h" - -static boolean aout_get_external_symbols PARAMS ((bfd *)); -static boolean translate_from_native_sym_flags - PARAMS ((bfd *, aout_symbol_type *)); -static boolean translate_to_native_sym_flags - PARAMS ((bfd *, asymbol *, struct external_nlist *)); -static void adjust_o_magic PARAMS ((bfd *, struct internal_exec *)); -static void adjust_z_magic PARAMS ((bfd *, struct internal_exec *)); -static void adjust_n_magic PARAMS ((bfd *, struct internal_exec *)); - -/* -SUBSECTION - Relocations - -DESCRIPTION - The file @file{aoutx.h} provides for both the @emph{standard} - and @emph{extended} forms of a.out relocation records. - - The standard records contain only an - address, a symbol index, and a type field. The extended records - (used on 29ks and sparcs) also have a full integer for an - addend. - -*/ -#ifndef CTOR_TABLE_RELOC_HOWTO -#define CTOR_TABLE_RELOC_IDX 2 -#define CTOR_TABLE_RELOC_HOWTO(BFD) ((obj_reloc_entry_size(BFD) == RELOC_EXT_SIZE \ - ? howto_table_ext : howto_table_std) \ - + CTOR_TABLE_RELOC_IDX) -#endif - -#ifndef MY_swap_std_reloc_in -#define MY_swap_std_reloc_in NAME(aout,swap_std_reloc_in) -#endif - -#ifndef MY_swap_ext_reloc_in -#define MY_swap_ext_reloc_in NAME(aout,swap_ext_reloc_in) -#endif - -#ifndef MY_swap_std_reloc_out -#define MY_swap_std_reloc_out NAME(aout,swap_std_reloc_out) -#endif - -#ifndef MY_swap_ext_reloc_out -#define MY_swap_ext_reloc_out NAME(aout,swap_ext_reloc_out) -#endif - -#ifndef MY_final_link_relocate -#define MY_final_link_relocate _bfd_final_link_relocate -#endif - -#ifndef MY_relocate_contents -#define MY_relocate_contents _bfd_relocate_contents -#endif - -#define howto_table_ext NAME(aout,ext_howto_table) -#define howto_table_std NAME(aout,std_howto_table) - -reloc_howto_type howto_table_ext[] = -{ - /* type rs size bsz pcrel bitpos ovrf sf name part_inpl readmask setmask pcdone */ - HOWTO(RELOC_8, 0, 0, 8, false, 0, complain_overflow_bitfield,0,"8", false, 0,0x000000ff, false), - HOWTO(RELOC_16, 0, 1, 16, false, 0, complain_overflow_bitfield,0,"16", false, 0,0x0000ffff, false), - HOWTO(RELOC_32, 0, 2, 32, false, 0, complain_overflow_bitfield,0,"32", false, 0,0xffffffff, false), - HOWTO(RELOC_DISP8, 0, 0, 8, true, 0, complain_overflow_signed,0,"DISP8", false, 0,0x000000ff, false), - HOWTO(RELOC_DISP16, 0, 1, 16, true, 0, complain_overflow_signed,0,"DISP16", false, 0,0x0000ffff, false), - HOWTO(RELOC_DISP32, 0, 2, 32, true, 0, complain_overflow_signed,0,"DISP32", false, 0,0xffffffff, false), - HOWTO(RELOC_WDISP30,2, 2, 30, true, 0, complain_overflow_signed,0,"WDISP30", false, 0,0x3fffffff, false), - HOWTO(RELOC_WDISP22,2, 2, 22, true, 0, complain_overflow_signed,0,"WDISP22", false, 0,0x003fffff, false), - HOWTO(RELOC_HI22, 10, 2, 22, false, 0, complain_overflow_bitfield,0,"HI22", false, 0,0x003fffff, false), - HOWTO(RELOC_22, 0, 2, 22, false, 0, complain_overflow_bitfield,0,"22", false, 0,0x003fffff, false), - HOWTO(RELOC_13, 0, 2, 13, false, 0, complain_overflow_bitfield,0,"13", false, 0,0x00001fff, false), - HOWTO(RELOC_LO10, 0, 2, 10, false, 0, complain_overflow_dont,0,"LO10", false, 0,0x000003ff, false), - HOWTO(RELOC_SFA_BASE,0, 2, 32, false, 0, complain_overflow_bitfield,0,"SFA_BASE", false, 0,0xffffffff, false), - HOWTO(RELOC_SFA_OFF13,0,2, 32, false, 0, complain_overflow_bitfield,0,"SFA_OFF13",false, 0,0xffffffff, false), - HOWTO(RELOC_BASE10, 0, 2, 10, false, 0, complain_overflow_dont,0,"BASE10", false, 0,0x000003ff, false), - HOWTO(RELOC_BASE13, 0, 2, 13, false, 0, complain_overflow_signed,0,"BASE13", false, 0,0x00001fff, false), - HOWTO(RELOC_BASE22, 10, 2, 22, false, 0, complain_overflow_bitfield,0,"BASE22", false, 0,0x003fffff, false), - HOWTO(RELOC_PC10, 0, 2, 10, true, 0, complain_overflow_dont,0,"PC10", false, 0,0x000003ff, true), - HOWTO(RELOC_PC22, 10, 2, 22, true, 0, complain_overflow_signed,0,"PC22", false, 0,0x003fffff, true), - HOWTO(RELOC_JMP_TBL,2, 2, 30, true, 0, complain_overflow_signed,0,"JMP_TBL", false, 0,0x3fffffff, false), - HOWTO(RELOC_SEGOFF16,0, 2, 0, false, 0, complain_overflow_bitfield,0,"SEGOFF16", false, 0,0x00000000, false), - HOWTO(RELOC_GLOB_DAT,0, 2, 0, false, 0, complain_overflow_bitfield,0,"GLOB_DAT", false, 0,0x00000000, false), - HOWTO(RELOC_JMP_SLOT,0, 2, 0, false, 0, complain_overflow_bitfield,0,"JMP_SLOT", false, 0,0x00000000, false), - HOWTO(RELOC_RELATIVE,0, 2, 0, false, 0, complain_overflow_bitfield,0,"RELATIVE", false, 0,0x00000000, false), - HOWTO(0, 0, 0, 0, false, 0, complain_overflow_dont, 0, "R_SPARC_NONE", false,0,0x00000000,true), - HOWTO(0, 0, 0, 0, false, 0, complain_overflow_dont, 0, "R_SPARC_NONE", false,0,0x00000000,true), -#define RELOC_SPARC_REV32 RELOC_WDISP19 - HOWTO(RELOC_SPARC_REV32, 0, 2, 32, false, 0, complain_overflow_dont,0,"R_SPARC_REV32", false, 0,0xffffffff, false), -}; - -/* Convert standard reloc records to "arelent" format (incl byte swap). */ - -reloc_howto_type howto_table_std[] = { - /* type rs size bsz pcrel bitpos ovrf sf name part_inpl readmask setmask pcdone */ -HOWTO( 0, 0, 0, 8, false, 0, complain_overflow_bitfield,0,"8", true, 0x000000ff,0x000000ff, false), -HOWTO( 1, 0, 1, 16, false, 0, complain_overflow_bitfield,0,"16", true, 0x0000ffff,0x0000ffff, false), -HOWTO( 2, 0, 2, 32, false, 0, complain_overflow_bitfield,0,"32", true, 0xffffffff,0xffffffff, false), -HOWTO( 3, 0, 4, 64, false, 0, complain_overflow_bitfield,0,"64", true, 0xdeaddead,0xdeaddead, false), -HOWTO( 4, 0, 0, 8, true, 0, complain_overflow_signed, 0,"DISP8", true, 0x000000ff,0x000000ff, false), -HOWTO( 5, 0, 1, 16, true, 0, complain_overflow_signed, 0,"DISP16", true, 0x0000ffff,0x0000ffff, false), -HOWTO( 6, 0, 2, 32, true, 0, complain_overflow_signed, 0,"DISP32", true, 0xffffffff,0xffffffff, false), -HOWTO( 7, 0, 4, 64, true, 0, complain_overflow_signed, 0,"DISP64", true, 0xfeedface,0xfeedface, false), -HOWTO( 8, 0, 2, 0, false, 0, complain_overflow_bitfield,0,"GOT_REL", false, 0,0x00000000, false), -HOWTO( 9, 0, 1, 16, false, 0, complain_overflow_bitfield,0,"BASE16", false,0xffffffff,0xffffffff, false), -HOWTO(10, 0, 2, 32, false, 0, complain_overflow_bitfield,0,"BASE32", false,0xffffffff,0xffffffff, false), -EMPTY_HOWTO (-1), -EMPTY_HOWTO (-1), -EMPTY_HOWTO (-1), -EMPTY_HOWTO (-1), -EMPTY_HOWTO (-1), - HOWTO(16, 0, 2, 0, false, 0, complain_overflow_bitfield,0,"JMP_TABLE", false, 0,0x00000000, false), -EMPTY_HOWTO (-1), -EMPTY_HOWTO (-1), -EMPTY_HOWTO (-1), -EMPTY_HOWTO (-1), -EMPTY_HOWTO (-1), -EMPTY_HOWTO (-1), -EMPTY_HOWTO (-1), -EMPTY_HOWTO (-1), -EMPTY_HOWTO (-1), -EMPTY_HOWTO (-1), -EMPTY_HOWTO (-1), -EMPTY_HOWTO (-1), -EMPTY_HOWTO (-1), -EMPTY_HOWTO (-1), -EMPTY_HOWTO (-1), - HOWTO(32, 0, 2, 0, false, 0, complain_overflow_bitfield,0,"RELATIVE", false, 0,0x00000000, false), -EMPTY_HOWTO (-1), -EMPTY_HOWTO (-1), -EMPTY_HOWTO (-1), -EMPTY_HOWTO (-1), -EMPTY_HOWTO (-1), -EMPTY_HOWTO (-1), -EMPTY_HOWTO (-1), - HOWTO(40, 0, 2, 0, false, 0, complain_overflow_bitfield,0,"BASEREL", false, 0,0x00000000, false), -}; - -#define TABLE_SIZE(TABLE) (sizeof (TABLE)/sizeof (TABLE[0])) - -reloc_howto_type * -NAME(aout,reloc_type_lookup) (abfd,code) - bfd *abfd; - bfd_reloc_code_real_type code; -{ -#define EXT(i,j) case i: return &howto_table_ext[j] -#define STD(i,j) case i: return &howto_table_std[j] - int ext = obj_reloc_entry_size (abfd) == RELOC_EXT_SIZE; - if (code == BFD_RELOC_CTOR) - switch (bfd_get_arch_info (abfd)->bits_per_address) - { - case 32: - code = BFD_RELOC_32; - break; - case 64: - code = BFD_RELOC_64; - break; - } - if (ext) - switch (code) - { - EXT (BFD_RELOC_8, 0); - EXT (BFD_RELOC_16, 1); - EXT (BFD_RELOC_32, 2); - EXT (BFD_RELOC_HI22, 8); - EXT (BFD_RELOC_LO10, 11); - EXT (BFD_RELOC_32_PCREL_S2, 6); - EXT (BFD_RELOC_SPARC_WDISP22, 7); - EXT (BFD_RELOC_SPARC13, 10); - EXT (BFD_RELOC_SPARC_GOT10, 14); - EXT (BFD_RELOC_SPARC_BASE13, 15); - EXT (BFD_RELOC_SPARC_GOT13, 15); - EXT (BFD_RELOC_SPARC_GOT22, 16); - EXT (BFD_RELOC_SPARC_PC10, 17); - EXT (BFD_RELOC_SPARC_PC22, 18); - EXT (BFD_RELOC_SPARC_WPLT30, 19); - EXT (BFD_RELOC_SPARC_REV32, 26); - default: return (reloc_howto_type *) NULL; - } - else - /* std relocs */ - switch (code) - { - STD (BFD_RELOC_16, 1); - STD (BFD_RELOC_32, 2); - STD (BFD_RELOC_8_PCREL, 4); - STD (BFD_RELOC_16_PCREL, 5); - STD (BFD_RELOC_32_PCREL, 6); - STD (BFD_RELOC_16_BASEREL, 9); - STD (BFD_RELOC_32_BASEREL, 10); - default: return (reloc_howto_type *) NULL; - } -} - -/* -SUBSECTION - Internal entry points - -DESCRIPTION - @file{aoutx.h} exports several routines for accessing the - contents of an a.out file, which are gathered and exported in - turn by various format specific files (eg sunos.c). - -*/ - -/* -FUNCTION - aout_@var{size}_swap_exec_header_in - -SYNOPSIS - void aout_@var{size}_swap_exec_header_in, - (bfd *abfd, - struct external_exec *raw_bytes, - struct internal_exec *execp); - -DESCRIPTION - Swap the information in an executable header @var{raw_bytes} taken - from a raw byte stream memory image into the internal exec header - structure @var{execp}. -*/ - -#ifndef NAME_swap_exec_header_in -void -NAME(aout,swap_exec_header_in) (abfd, raw_bytes, execp) - bfd *abfd; - struct external_exec *raw_bytes; - struct internal_exec *execp; -{ - struct external_exec *bytes = (struct external_exec *)raw_bytes; - - /* The internal_exec structure has some fields that are unused in this - configuration (IE for i960), so ensure that all such uninitialized - fields are zero'd out. There are places where two of these structs - are memcmp'd, and thus the contents do matter. */ - memset ((PTR) execp, 0, sizeof (struct internal_exec)); - /* Now fill in fields in the execp, from the bytes in the raw data. */ - execp->a_info = bfd_h_get_32 (abfd, bytes->e_info); - execp->a_text = GET_WORD (abfd, bytes->e_text); - execp->a_data = GET_WORD (abfd, bytes->e_data); - execp->a_bss = GET_WORD (abfd, bytes->e_bss); - execp->a_syms = GET_WORD (abfd, bytes->e_syms); - execp->a_entry = GET_WORD (abfd, bytes->e_entry); - execp->a_trsize = GET_WORD (abfd, bytes->e_trsize); - execp->a_drsize = GET_WORD (abfd, bytes->e_drsize); -} -#define NAME_swap_exec_header_in NAME(aout,swap_exec_header_in) -#endif - -/* -FUNCTION - aout_@var{size}_swap_exec_header_out - -SYNOPSIS - void aout_@var{size}_swap_exec_header_out - (bfd *abfd, - struct internal_exec *execp, - struct external_exec *raw_bytes); - -DESCRIPTION - Swap the information in an internal exec header structure - @var{execp} into the buffer @var{raw_bytes} ready for writing to disk. -*/ -void -NAME(aout,swap_exec_header_out) (abfd, execp, raw_bytes) - bfd *abfd; - struct internal_exec *execp; - struct external_exec *raw_bytes; -{ - struct external_exec *bytes = (struct external_exec *)raw_bytes; - - /* Now fill in fields in the raw data, from the fields in the exec struct. */ - bfd_h_put_32 (abfd, execp->a_info , bytes->e_info); - PUT_WORD (abfd, execp->a_text , bytes->e_text); - PUT_WORD (abfd, execp->a_data , bytes->e_data); - PUT_WORD (abfd, execp->a_bss , bytes->e_bss); - PUT_WORD (abfd, execp->a_syms , bytes->e_syms); - PUT_WORD (abfd, execp->a_entry , bytes->e_entry); - PUT_WORD (abfd, execp->a_trsize, bytes->e_trsize); - PUT_WORD (abfd, execp->a_drsize, bytes->e_drsize); -} - -/* Make all the section for an a.out file. */ - -boolean -NAME(aout,make_sections) (abfd) - bfd *abfd; -{ - if (obj_textsec (abfd) == (asection *) NULL - && bfd_make_section (abfd, ".text") == (asection *) NULL) - return false; - if (obj_datasec (abfd) == (asection *) NULL - && bfd_make_section (abfd, ".data") == (asection *) NULL) - return false; - if (obj_bsssec (abfd) == (asection *) NULL - && bfd_make_section (abfd, ".bss") == (asection *) NULL) - return false; - return true; -} - -/* -FUNCTION - aout_@var{size}_some_aout_object_p - -SYNOPSIS - const bfd_target *aout_@var{size}_some_aout_object_p - (bfd *abfd, - const bfd_target *(*callback_to_real_object_p) ()); - -DESCRIPTION - Some a.out variant thinks that the file open in @var{abfd} - checking is an a.out file. Do some more checking, and set up - for access if it really is. Call back to the calling - environment's "finish up" function just before returning, to - handle any last-minute setup. -*/ - -const bfd_target * -NAME(aout,some_aout_object_p) (abfd, execp, callback_to_real_object_p) - bfd *abfd; - struct internal_exec *execp; - const bfd_target *(*callback_to_real_object_p) PARAMS ((bfd *)); -{ - struct aout_data_struct *rawptr, *oldrawptr; - const bfd_target *result; - - rawptr = (struct aout_data_struct *) bfd_zalloc (abfd, sizeof (struct aout_data_struct )); - if (rawptr == NULL) - return 0; - - oldrawptr = abfd->tdata.aout_data; - abfd->tdata.aout_data = rawptr; - - /* Copy the contents of the old tdata struct. - In particular, we want the subformat, since for hpux it was set in - hp300hpux.c:swap_exec_header_in and will be used in - hp300hpux.c:callback. */ - if (oldrawptr != NULL) - *abfd->tdata.aout_data = *oldrawptr; - - abfd->tdata.aout_data->a.hdr = &rawptr->e; - *(abfd->tdata.aout_data->a.hdr) = *execp; /* Copy in the internal_exec struct */ - execp = abfd->tdata.aout_data->a.hdr; - - /* Set the file flags */ - abfd->flags = BFD_NO_FLAGS; - if (execp->a_drsize || execp->a_trsize) - abfd->flags |= HAS_RELOC; - /* Setting of EXEC_P has been deferred to the bottom of this function */ - if (execp->a_syms) - abfd->flags |= HAS_LINENO | HAS_DEBUG | HAS_SYMS | HAS_LOCALS; - if (N_DYNAMIC(*execp)) - abfd->flags |= DYNAMIC; - - if (N_MAGIC (*execp) == ZMAGIC) - { - abfd->flags |= D_PAGED | WP_TEXT; - adata (abfd).magic = z_magic; - } - else if (N_MAGIC (*execp) == QMAGIC) - { - abfd->flags |= D_PAGED | WP_TEXT; - adata (abfd).magic = z_magic; - adata (abfd).subformat = q_magic_format; - } - else if (N_MAGIC (*execp) == NMAGIC) - { - abfd->flags |= WP_TEXT; - adata (abfd).magic = n_magic; - } - else if (N_MAGIC (*execp) == OMAGIC - || N_MAGIC (*execp) == BMAGIC) - adata (abfd).magic = o_magic; - else - { - /* Should have been checked with N_BADMAG before this routine - was called. */ - abort (); - } - - bfd_get_start_address (abfd) = execp->a_entry; - - obj_aout_symbols (abfd) = (aout_symbol_type *)NULL; - bfd_get_symcount (abfd) = execp->a_syms / sizeof (struct external_nlist); - - /* The default relocation entry size is that of traditional V7 Unix. */ - obj_reloc_entry_size (abfd) = RELOC_STD_SIZE; - - /* The default symbol entry size is that of traditional Unix. */ - obj_symbol_entry_size (abfd) = EXTERNAL_NLIST_SIZE; - -#ifdef USE_MMAP - bfd_init_window (&obj_aout_sym_window (abfd)); - bfd_init_window (&obj_aout_string_window (abfd)); -#endif - obj_aout_external_syms (abfd) = NULL; - obj_aout_external_strings (abfd) = NULL; - obj_aout_sym_hashes (abfd) = NULL; - - if (! NAME(aout,make_sections) (abfd)) - return NULL; - - obj_datasec (abfd)->_raw_size = execp->a_data; - obj_bsssec (abfd)->_raw_size = execp->a_bss; - - obj_textsec (abfd)->flags = - (execp->a_trsize != 0 - ? (SEC_ALLOC | SEC_LOAD | SEC_CODE | SEC_HAS_CONTENTS | SEC_RELOC) - : (SEC_ALLOC | SEC_LOAD | SEC_CODE | SEC_HAS_CONTENTS)); - obj_datasec (abfd)->flags = - (execp->a_drsize != 0 - ? (SEC_ALLOC | SEC_LOAD | SEC_DATA | SEC_HAS_CONTENTS | SEC_RELOC) - : (SEC_ALLOC | SEC_LOAD | SEC_DATA | SEC_HAS_CONTENTS)); - obj_bsssec (abfd)->flags = SEC_ALLOC; - -#ifdef THIS_IS_ONLY_DOCUMENTATION - /* The common code can't fill in these things because they depend - on either the start address of the text segment, the rounding - up of virtual addresses between segments, or the starting file - position of the text segment -- all of which varies among different - versions of a.out. */ - - /* Call back to the format-dependent code to fill in the rest of the - fields and do any further cleanup. Things that should be filled - in by the callback: */ - - struct exec *execp = exec_hdr (abfd); - - obj_textsec (abfd)->size = N_TXTSIZE(*execp); - obj_textsec (abfd)->raw_size = N_TXTSIZE(*execp); - /* data and bss are already filled in since they're so standard */ - - /* The virtual memory addresses of the sections */ - obj_textsec (abfd)->vma = N_TXTADDR(*execp); - obj_datasec (abfd)->vma = N_DATADDR(*execp); - obj_bsssec (abfd)->vma = N_BSSADDR(*execp); - - /* The file offsets of the sections */ - obj_textsec (abfd)->filepos = N_TXTOFF(*execp); - obj_datasec (abfd)->filepos = N_DATOFF(*execp); - - /* The file offsets of the relocation info */ - obj_textsec (abfd)->rel_filepos = N_TRELOFF(*execp); - obj_datasec (abfd)->rel_filepos = N_DRELOFF(*execp); - - /* The file offsets of the string table and symbol table. */ - obj_str_filepos (abfd) = N_STROFF (*execp); - obj_sym_filepos (abfd) = N_SYMOFF (*execp); - - /* Determine the architecture and machine type of the object file. */ - switch (N_MACHTYPE (*exec_hdr (abfd))) { - default: - abfd->obj_arch = bfd_arch_obscure; - break; - } - - adata(abfd)->page_size = TARGET_PAGE_SIZE; - adata(abfd)->segment_size = SEGMENT_SIZE; - adata(abfd)->exec_bytes_size = EXEC_BYTES_SIZE; - - return abfd->xvec; - - /* The architecture is encoded in various ways in various a.out variants, - or is not encoded at all in some of them. The relocation size depends - on the architecture and the a.out variant. Finally, the return value - is the bfd_target vector in use. If an error occurs, return zero and - set bfd_error to the appropriate error code. - - Formats such as b.out, which have additional fields in the a.out - header, should cope with them in this callback as well. */ -#endif /* DOCUMENTATION */ - - result = (*callback_to_real_object_p) (abfd); - - /* Now that the segment addresses have been worked out, take a better - guess at whether the file is executable. If the entry point - is within the text segment, assume it is. (This makes files - executable even if their entry point address is 0, as long as - their text starts at zero.). - - This test had to be changed to deal with systems where the text segment - runs at a different location than the default. The problem is that the - entry address can appear to be outside the text segment, thus causing an - erroneous conclusion that the file isn't executable. - - To fix this, we now accept any non-zero entry point as an indication of - executability. This will work most of the time, since only the linker - sets the entry point, and that is likely to be non-zero for most systems. */ - - if (execp->a_entry != 0 - || (execp->a_entry >= obj_textsec(abfd)->vma - && execp->a_entry < obj_textsec(abfd)->vma + obj_textsec(abfd)->_raw_size)) - abfd->flags |= EXEC_P; -#ifdef STAT_FOR_EXEC - else - { - struct stat stat_buf; - - /* The original heuristic doesn't work in some important cases. - The a.out file has no information about the text start - address. For files (like kernels) linked to non-standard - addresses (ld -Ttext nnn) the entry point may not be between - the default text start (obj_textsec(abfd)->vma) and - (obj_textsec(abfd)->vma) + text size. This is not just a mach - issue. Many kernels are loaded at non standard addresses. */ - if (abfd->iostream != NULL - && (abfd->flags & BFD_IN_MEMORY) == 0 - && (fstat(fileno((FILE *) (abfd->iostream)), &stat_buf) == 0) - && ((stat_buf.st_mode & 0111) != 0)) - abfd->flags |= EXEC_P; - } -#endif /* STAT_FOR_EXEC */ - - if (result) - { -#if 0 /* These should be set correctly anyways. */ - abfd->sections = obj_textsec (abfd); - obj_textsec (abfd)->next = obj_datasec (abfd); - obj_datasec (abfd)->next = obj_bsssec (abfd); -#endif - } - else - { - free (rawptr); - abfd->tdata.aout_data = oldrawptr; - } - return result; -} - -/* -FUNCTION - aout_@var{size}_mkobject - -SYNOPSIS - boolean aout_@var{size}_mkobject, (bfd *abfd); - -DESCRIPTION - Initialize BFD @var{abfd} for use with a.out files. -*/ - -boolean -NAME(aout,mkobject) (abfd) - bfd *abfd; -{ - struct aout_data_struct *rawptr; - - bfd_set_error (bfd_error_system_call); - - /* Use an intermediate variable for clarity */ - rawptr = (struct aout_data_struct *)bfd_zalloc (abfd, sizeof (struct aout_data_struct )); - - if (rawptr == NULL) - return false; - - abfd->tdata.aout_data = rawptr; - exec_hdr (abfd) = &(rawptr->e); - - obj_textsec (abfd) = (asection *)NULL; - obj_datasec (abfd) = (asection *)NULL; - obj_bsssec (abfd) = (asection *)NULL; - - return true; -} - -/* -FUNCTION - aout_@var{size}_machine_type - -SYNOPSIS - enum machine_type aout_@var{size}_machine_type - (enum bfd_architecture arch, - unsigned long machine)); - -DESCRIPTION - Keep track of machine architecture and machine type for - a.out's. Return the <<machine_type>> for a particular - architecture and machine, or <<M_UNKNOWN>> if that exact architecture - and machine can't be represented in a.out format. - - If the architecture is understood, machine type 0 (default) - is always understood. -*/ - -enum machine_type -NAME(aout,machine_type) (arch, machine, unknown) - enum bfd_architecture arch; - unsigned long machine; - boolean *unknown; -{ - enum machine_type arch_flags; - - arch_flags = M_UNKNOWN; - *unknown = true; - - switch (arch) { - case bfd_arch_sparc: - if (machine == 0 - || machine == bfd_mach_sparc - || machine == bfd_mach_sparc_sparclite - || machine == bfd_mach_sparc_sparclite_le - || machine == bfd_mach_sparc_v9) - arch_flags = M_SPARC; - else if (machine == bfd_mach_sparc_sparclet) - arch_flags = M_SPARCLET; - break; - - case bfd_arch_m68k: - switch (machine) { - case 0: arch_flags = M_68010; break; - case bfd_mach_m68000: arch_flags = M_UNKNOWN; *unknown = false; break; - case bfd_mach_m68010: arch_flags = M_68010; break; - case bfd_mach_m68020: arch_flags = M_68020; break; - default: arch_flags = M_UNKNOWN; break; - } - break; - - case bfd_arch_i386: - if (machine == 0) arch_flags = M_386; - break; - - case bfd_arch_a29k: - if (machine == 0) arch_flags = M_29K; - break; - - case bfd_arch_arm: - if (machine == 0) arch_flags = M_ARM; - break; - - case bfd_arch_mips: - switch (machine) { - case 0: - case bfd_mach_mips3000: - case bfd_mach_mips3900: - arch_flags = M_MIPS1; - break; - case bfd_mach_mips6000: - arch_flags = M_MIPS2; - break; - case bfd_mach_mips4000: - case bfd_mach_mips4010: - case bfd_mach_mips4100: - case bfd_mach_mips4300: - case bfd_mach_mips4400: - case bfd_mach_mips4600: - case bfd_mach_mips4650: - case bfd_mach_mips8000: - case bfd_mach_mips10000: - case bfd_mach_mips12000: - case bfd_mach_mips16: - case bfd_mach_mips32: - case bfd_mach_mips32_4k: - case bfd_mach_mips5: - case bfd_mach_mips64: - case bfd_mach_mips_sb1: - /* FIXME: These should be MIPS3, MIPS4, MIPS16, MIPS32, etc. */ - arch_flags = M_MIPS2; - break; - default: - arch_flags = M_UNKNOWN; - break; - } - break; - - case bfd_arch_ns32k: - switch (machine) { - case 0: arch_flags = M_NS32532; break; - case 32032: arch_flags = M_NS32032; break; - case 32532: arch_flags = M_NS32532; break; - default: arch_flags = M_UNKNOWN; break; - } - break; - - case bfd_arch_vax: - *unknown = false; - break; - - case bfd_arch_cris: - if (machine == 0 || machine == 255) arch_flags = M_CRIS; - break; - - default: - arch_flags = M_UNKNOWN; - } - - if (arch_flags != M_UNKNOWN) - *unknown = false; - - return arch_flags; -} - -/* -FUNCTION - aout_@var{size}_set_arch_mach - -SYNOPSIS - boolean aout_@var{size}_set_arch_mach, - (bfd *, - enum bfd_architecture arch, - unsigned long machine)); - -DESCRIPTION - Set the architecture and the machine of the BFD @var{abfd} to the - values @var{arch} and @var{machine}. Verify that @var{abfd}'s format - can support the architecture required. -*/ - -boolean -NAME(aout,set_arch_mach) (abfd, arch, machine) - bfd *abfd; - enum bfd_architecture arch; - unsigned long machine; -{ - if (! bfd_default_set_arch_mach (abfd, arch, machine)) - return false; - - if (arch != bfd_arch_unknown) - { - boolean unknown; - - NAME(aout,machine_type) (arch, machine, &unknown); - if (unknown) - return false; - } - - /* Determine the size of a relocation entry */ - switch (arch) { - case bfd_arch_sparc: - case bfd_arch_a29k: - case bfd_arch_mips: - obj_reloc_entry_size (abfd) = RELOC_EXT_SIZE; - break; - default: - obj_reloc_entry_size (abfd) = RELOC_STD_SIZE; - break; - } - - return (*aout_backend_info(abfd)->set_sizes) (abfd); -} - -static void -adjust_o_magic (abfd, execp) - bfd *abfd; - struct internal_exec *execp; -{ - file_ptr pos = adata (abfd).exec_bytes_size; - bfd_vma vma = 0; - int pad = 0; - - /* Text. */ - obj_textsec(abfd)->filepos = pos; - if (!obj_textsec(abfd)->user_set_vma) - obj_textsec(abfd)->vma = vma; - else - vma = obj_textsec(abfd)->vma; - - pos += obj_textsec(abfd)->_raw_size; - vma += obj_textsec(abfd)->_raw_size; - - /* Data. */ - if (!obj_datasec(abfd)->user_set_vma) - { -#if 0 /* ?? Does alignment in the file image really matter? */ - pad = align_power (vma, obj_datasec(abfd)->alignment_power) - vma; -#endif - obj_textsec(abfd)->_raw_size += pad; - pos += pad; - vma += pad; - obj_datasec(abfd)->vma = vma; - } - else - vma = obj_datasec(abfd)->vma; - obj_datasec(abfd)->filepos = pos; - pos += obj_datasec(abfd)->_raw_size; - vma += obj_datasec(abfd)->_raw_size; - - /* BSS. */ - if (!obj_bsssec(abfd)->user_set_vma) - { -#if 0 - pad = align_power (vma, obj_bsssec(abfd)->alignment_power) - vma; -#endif - obj_datasec(abfd)->_raw_size += pad; - pos += pad; - vma += pad; - obj_bsssec(abfd)->vma = vma; - } - else - { - /* The VMA of the .bss section is set by the the VMA of the - .data section plus the size of the .data section. We may - need to add padding bytes to make this true. */ - pad = obj_bsssec (abfd)->vma - vma; - if (pad > 0) - { - obj_datasec (abfd)->_raw_size += pad; - pos += pad; - } - } - obj_bsssec(abfd)->filepos = pos; - - /* Fix up the exec header. */ - execp->a_text = obj_textsec(abfd)->_raw_size; - execp->a_data = obj_datasec(abfd)->_raw_size; - execp->a_bss = obj_bsssec(abfd)->_raw_size; - N_SET_MAGIC (*execp, OMAGIC); -} - -static void -adjust_z_magic (abfd, execp) - bfd *abfd; - struct internal_exec *execp; -{ - bfd_size_type data_pad, text_pad; - file_ptr text_end; - CONST struct aout_backend_data *abdp; - int ztih; /* Nonzero if text includes exec header. */ - - abdp = aout_backend_info (abfd); - - /* Text. */ - ztih = (abdp != NULL - && (abdp->text_includes_header - || obj_aout_subformat (abfd) == q_magic_format)); - obj_textsec(abfd)->filepos = (ztih - ? adata(abfd).exec_bytes_size - : adata(abfd).zmagic_disk_block_size); - if (! obj_textsec(abfd)->user_set_vma) - { - /* ?? Do we really need to check for relocs here? */ - obj_textsec(abfd)->vma = ((abfd->flags & HAS_RELOC) - ? 0 - : (ztih - ? (abdp->default_text_vma - + adata(abfd).exec_bytes_size) - : abdp->default_text_vma)); - text_pad = 0; - } - else - { - /* The .text section is being loaded at an unusual address. We - may need to pad it such that the .data section starts at a page - boundary. */ - if (ztih) - text_pad = ((obj_textsec (abfd)->filepos - obj_textsec (abfd)->vma) - & (adata (abfd).page_size - 1)); - else - text_pad = ((- obj_textsec (abfd)->vma) - & (adata (abfd).page_size - 1)); - } - - /* Find start of data. */ - if (ztih) - { - text_end = obj_textsec (abfd)->filepos + obj_textsec (abfd)->_raw_size; - text_pad += BFD_ALIGN (text_end, adata (abfd).page_size) - text_end; - } - else - { - /* Note that if page_size == zmagic_disk_block_size, then - filepos == page_size, and this case is the same as the ztih - case. */ - text_end = obj_textsec (abfd)->_raw_size; - text_pad += BFD_ALIGN (text_end, adata (abfd).page_size) - text_end; - text_end += obj_textsec (abfd)->filepos; - } - obj_textsec(abfd)->_raw_size += text_pad; - text_end += text_pad; - - /* Data. */ - if (!obj_datasec(abfd)->user_set_vma) - { - bfd_vma vma; - vma = obj_textsec(abfd)->vma + obj_textsec(abfd)->_raw_size; - obj_datasec(abfd)->vma = BFD_ALIGN (vma, adata(abfd).segment_size); - } - if (abdp && abdp->zmagic_mapped_contiguous) - { - asection * text = obj_textsec (abfd); - asection * data = obj_datasec (abfd); - - text_pad = data->vma - (text->vma + text->_raw_size); - /* Only pad the text section if the data - section is going to be placed after it. */ - if (text_pad > 0) - text->_raw_size += text_pad; - } - obj_datasec(abfd)->filepos = (obj_textsec(abfd)->filepos - + obj_textsec(abfd)->_raw_size); - - /* Fix up exec header while we're at it. */ - execp->a_text = obj_textsec(abfd)->_raw_size; - if (ztih && (!abdp || (abdp && !abdp->exec_header_not_counted))) - execp->a_text += adata(abfd).exec_bytes_size; - if (obj_aout_subformat (abfd) == q_magic_format) - N_SET_MAGIC (*execp, QMAGIC); - else - N_SET_MAGIC (*execp, ZMAGIC); - - /* Spec says data section should be rounded up to page boundary. */ - obj_datasec(abfd)->_raw_size - = align_power (obj_datasec(abfd)->_raw_size, - obj_bsssec(abfd)->alignment_power); - execp->a_data = BFD_ALIGN (obj_datasec(abfd)->_raw_size, - adata(abfd).page_size); - data_pad = execp->a_data - obj_datasec(abfd)->_raw_size; - - /* BSS. */ - if (!obj_bsssec(abfd)->user_set_vma) - obj_bsssec(abfd)->vma = (obj_datasec(abfd)->vma - + obj_datasec(abfd)->_raw_size); - /* If the BSS immediately follows the data section and extra space - in the page is left after the data section, fudge data - in the header so that the bss section looks smaller by that - amount. We'll start the bss section there, and lie to the OS. - (Note that a linker script, as well as the above assignment, - could have explicitly set the BSS vma to immediately follow - the data section.) */ - if (align_power (obj_bsssec(abfd)->vma, obj_bsssec(abfd)->alignment_power) - == obj_datasec(abfd)->vma + obj_datasec(abfd)->_raw_size) - execp->a_bss = (data_pad > obj_bsssec(abfd)->_raw_size) ? 0 : - obj_bsssec(abfd)->_raw_size - data_pad; - else - execp->a_bss = obj_bsssec(abfd)->_raw_size; -} - -static void -adjust_n_magic (abfd, execp) - bfd *abfd; - struct internal_exec *execp; -{ - file_ptr pos = adata(abfd).exec_bytes_size; - bfd_vma vma = 0; - int pad; - - /* Text. */ - obj_textsec(abfd)->filepos = pos; - if (!obj_textsec(abfd)->user_set_vma) - obj_textsec(abfd)->vma = vma; - else - vma = obj_textsec(abfd)->vma; - pos += obj_textsec(abfd)->_raw_size; - vma += obj_textsec(abfd)->_raw_size; - - /* Data. */ - obj_datasec(abfd)->filepos = pos; - if (!obj_datasec(abfd)->user_set_vma) - obj_datasec(abfd)->vma = BFD_ALIGN (vma, adata(abfd).segment_size); - vma = obj_datasec(abfd)->vma; - - /* Since BSS follows data immediately, see if it needs alignment. */ - vma += obj_datasec(abfd)->_raw_size; - pad = align_power (vma, obj_bsssec(abfd)->alignment_power) - vma; - obj_datasec(abfd)->_raw_size += pad; - pos += obj_datasec(abfd)->_raw_size; - - /* BSS. */ - if (!obj_bsssec(abfd)->user_set_vma) - obj_bsssec(abfd)->vma = vma; - else - vma = obj_bsssec(abfd)->vma; - - /* Fix up exec header. */ - execp->a_text = obj_textsec(abfd)->_raw_size; - execp->a_data = obj_datasec(abfd)->_raw_size; - execp->a_bss = obj_bsssec(abfd)->_raw_size; - N_SET_MAGIC (*execp, NMAGIC); -} - -boolean -NAME(aout,adjust_sizes_and_vmas) (abfd, text_size, text_end) - bfd *abfd; - bfd_size_type *text_size; - file_ptr *text_end ATTRIBUTE_UNUSED; -{ - struct internal_exec *execp = exec_hdr (abfd); - - if (! NAME(aout,make_sections) (abfd)) - return false; - - if (adata(abfd).magic != undecided_magic) - return true; - - obj_textsec(abfd)->_raw_size = - align_power(obj_textsec(abfd)->_raw_size, - obj_textsec(abfd)->alignment_power); - - *text_size = obj_textsec (abfd)->_raw_size; - /* Rule (heuristic) for when to pad to a new page. Note that there - are (at least) two ways demand-paged (ZMAGIC) files have been - handled. Most Berkeley-based systems start the text segment at - (TARGET_PAGE_SIZE). However, newer versions of SUNOS start the text - segment right after the exec header; the latter is counted in the - text segment size, and is paged in by the kernel with the rest of - the text. */ - - /* This perhaps isn't the right way to do this, but made it simpler for me - to understand enough to implement it. Better would probably be to go - right from BFD flags to alignment/positioning characteristics. But the - old code was sloppy enough about handling the flags, and had enough - other magic, that it was a little hard for me to understand. I think - I understand it better now, but I haven't time to do the cleanup this - minute. */ - - if (abfd->flags & D_PAGED) - /* Whether or not WP_TEXT is set -- let D_PAGED override. */ - adata(abfd).magic = z_magic; - else if (abfd->flags & WP_TEXT) - adata(abfd).magic = n_magic; - else - adata(abfd).magic = o_magic; - -#ifdef BFD_AOUT_DEBUG /* requires gcc2 */ -#if __GNUC__ >= 2 - fprintf (stderr, "%s text=<%x,%x,%x> data=<%x,%x,%x> bss=<%x,%x,%x>\n", - ({ char *str; - switch (adata(abfd).magic) { - case n_magic: str = "NMAGIC"; break; - case o_magic: str = "OMAGIC"; break; - case z_magic: str = "ZMAGIC"; break; - default: abort (); - } - str; - }), - obj_textsec(abfd)->vma, obj_textsec(abfd)->_raw_size, - obj_textsec(abfd)->alignment_power, - obj_datasec(abfd)->vma, obj_datasec(abfd)->_raw_size, - obj_datasec(abfd)->alignment_power, - obj_bsssec(abfd)->vma, obj_bsssec(abfd)->_raw_size, - obj_bsssec(abfd)->alignment_power); -#endif -#endif - - switch (adata(abfd).magic) - { - case o_magic: - adjust_o_magic (abfd, execp); - break; - case z_magic: - adjust_z_magic (abfd, execp); - break; - case n_magic: - adjust_n_magic (abfd, execp); - break; - default: - abort (); - } - -#ifdef BFD_AOUT_DEBUG - fprintf (stderr, " text=<%x,%x,%x> data=<%x,%x,%x> bss=<%x,%x>\n", - obj_textsec(abfd)->vma, obj_textsec(abfd)->_raw_size, - obj_textsec(abfd)->filepos, - obj_datasec(abfd)->vma, obj_datasec(abfd)->_raw_size, - obj_datasec(abfd)->filepos, - obj_bsssec(abfd)->vma, obj_bsssec(abfd)->_raw_size); -#endif - - return true; -} - -/* -FUNCTION - aout_@var{size}_new_section_hook - -SYNOPSIS - boolean aout_@var{size}_new_section_hook, - (bfd *abfd, - asection *newsect)); - -DESCRIPTION - Called by the BFD in response to a @code{bfd_make_section} - request. -*/ -boolean -NAME(aout,new_section_hook) (abfd, newsect) - bfd *abfd; - asection *newsect; -{ - /* align to double at least */ - newsect->alignment_power = bfd_get_arch_info(abfd)->section_align_power; - - if (bfd_get_format (abfd) == bfd_object) - { - if (obj_textsec(abfd) == NULL && !strcmp(newsect->name, ".text")) { - obj_textsec(abfd)= newsect; - newsect->target_index = N_TEXT; - return true; - } - - if (obj_datasec(abfd) == NULL && !strcmp(newsect->name, ".data")) { - obj_datasec(abfd) = newsect; - newsect->target_index = N_DATA; - return true; - } - - if (obj_bsssec(abfd) == NULL && !strcmp(newsect->name, ".bss")) { - obj_bsssec(abfd) = newsect; - newsect->target_index = N_BSS; - return true; - } - - } - - /* We allow more than three sections internally */ - return true; -} - -boolean -NAME(aout,set_section_contents) (abfd, section, location, offset, count) - bfd *abfd; - sec_ptr section; - PTR location; - file_ptr offset; - bfd_size_type count; -{ - file_ptr text_end; - bfd_size_type text_size; - - if (! abfd->output_has_begun) - { - if (! NAME(aout,adjust_sizes_and_vmas) (abfd, &text_size, &text_end)) - return false; - } - - if (section == obj_bsssec (abfd)) - { - bfd_set_error (bfd_error_no_contents); - return false; - } - - if (section != obj_textsec (abfd) - && section != obj_datasec (abfd)) - { - (*_bfd_error_handler) - (_("%s: can not represent section `%s' in a.out object file format"), - bfd_get_filename (abfd), bfd_get_section_name (abfd, section)); - bfd_set_error (bfd_error_nonrepresentable_section); - return false; - } - - if (count != 0) - { - if (bfd_seek (abfd, section->filepos + offset, SEEK_SET) != 0 - || bfd_write (location, 1, count, abfd) != count) - return false; - } - - return true; -} - -/* Read the external symbols from an a.out file. */ - -static boolean -aout_get_external_symbols (abfd) - bfd *abfd; -{ - if (obj_aout_external_syms (abfd) == (struct external_nlist *) NULL) - { - bfd_size_type count; - struct external_nlist *syms; - - count = exec_hdr (abfd)->a_syms / EXTERNAL_NLIST_SIZE; - -#ifdef USE_MMAP - if (bfd_get_file_window (abfd, - obj_sym_filepos (abfd), exec_hdr (abfd)->a_syms, - &obj_aout_sym_window (abfd), true) == false) - return false; - syms = (struct external_nlist *) obj_aout_sym_window (abfd).data; -#else - /* We allocate using malloc to make the values easy to free - later on. If we put them on the objalloc it might not be - possible to free them. */ - syms = ((struct external_nlist *) - bfd_malloc ((size_t) count * EXTERNAL_NLIST_SIZE)); - if (syms == (struct external_nlist *) NULL && count != 0) - return false; - - if (bfd_seek (abfd, obj_sym_filepos (abfd), SEEK_SET) != 0 - || (bfd_read (syms, 1, exec_hdr (abfd)->a_syms, abfd) - != exec_hdr (abfd)->a_syms)) - { - free (syms); - return false; - } -#endif - - obj_aout_external_syms (abfd) = syms; - obj_aout_external_sym_count (abfd) = count; - } - - if (obj_aout_external_strings (abfd) == NULL - && exec_hdr (abfd)->a_syms != 0) - { - unsigned char string_chars[BYTES_IN_WORD]; - bfd_size_type stringsize; - char *strings; - - /* Get the size of the strings. */ - if (bfd_seek (abfd, obj_str_filepos (abfd), SEEK_SET) != 0 - || (bfd_read ((PTR) string_chars, BYTES_IN_WORD, 1, abfd) - != BYTES_IN_WORD)) - return false; - stringsize = GET_WORD (abfd, string_chars); - -#ifdef USE_MMAP - if (bfd_get_file_window (abfd, obj_str_filepos (abfd), stringsize, - &obj_aout_string_window (abfd), true) == false) - return false; - strings = (char *) obj_aout_string_window (abfd).data; -#else - strings = (char *) bfd_malloc ((size_t) stringsize + 1); - if (strings == NULL) - return false; - - /* Skip space for the string count in the buffer for convenience - when using indexes. */ - if (bfd_read (strings + BYTES_IN_WORD, 1, stringsize - BYTES_IN_WORD, - abfd) - != stringsize - BYTES_IN_WORD) - { - free (strings); - return false; - } -#endif - - /* Ensure that a zero index yields an empty string. */ - strings[0] = '\0'; - - strings[stringsize - 1] = 0; - - obj_aout_external_strings (abfd) = strings; - obj_aout_external_string_size (abfd) = stringsize; - } - - return true; -} - -/* Translate an a.out symbol into a BFD symbol. The desc, other, type - and symbol->value fields of CACHE_PTR will be set from the a.out - nlist structure. This function is responsible for setting - symbol->flags and symbol->section, and adjusting symbol->value. */ - -static boolean -translate_from_native_sym_flags (abfd, cache_ptr) - bfd *abfd; - aout_symbol_type *cache_ptr; -{ - flagword visible; - - if ((cache_ptr->type & N_STAB) != 0 - || cache_ptr->type == N_FN) - { - asection *sec; - - /* This is a debugging symbol. */ - - cache_ptr->symbol.flags = BSF_DEBUGGING; - - /* Work out the symbol section. */ - switch (cache_ptr->type & N_TYPE) - { - case N_TEXT: - case N_FN: - sec = obj_textsec (abfd); - break; - case N_DATA: - sec = obj_datasec (abfd); - break; - case N_BSS: - sec = obj_bsssec (abfd); - break; - default: - case N_ABS: - sec = bfd_abs_section_ptr; - break; - } - - cache_ptr->symbol.section = sec; - cache_ptr->symbol.value -= sec->vma; - - return true; - } - - /* Get the default visibility. This does not apply to all types, so - we just hold it in a local variable to use if wanted. */ - if ((cache_ptr->type & N_EXT) == 0) - visible = BSF_LOCAL; - else - visible = BSF_GLOBAL; - - switch (cache_ptr->type) - { - default: - case N_ABS: case N_ABS | N_EXT: - cache_ptr->symbol.section = bfd_abs_section_ptr; - cache_ptr->symbol.flags = visible; - break; - - case N_UNDF | N_EXT: - if (cache_ptr->symbol.value != 0) - { - /* This is a common symbol. */ - cache_ptr->symbol.flags = BSF_GLOBAL; - cache_ptr->symbol.section = bfd_com_section_ptr; - } - else - { - cache_ptr->symbol.flags = 0; - cache_ptr->symbol.section = bfd_und_section_ptr; - } - break; - - case N_TEXT: case N_TEXT | N_EXT: - cache_ptr->symbol.section = obj_textsec (abfd); - cache_ptr->symbol.value -= cache_ptr->symbol.section->vma; - cache_ptr->symbol.flags = visible; - break; - - /* N_SETV symbols used to represent set vectors placed in the - data section. They are no longer generated. Theoretically, - it was possible to extract the entries and combine them with - new ones, although I don't know if that was ever actually - done. Unless that feature is restored, treat them as data - symbols. */ - case N_SETV: case N_SETV | N_EXT: - case N_DATA: case N_DATA | N_EXT: - cache_ptr->symbol.section = obj_datasec (abfd); - cache_ptr->symbol.value -= cache_ptr->symbol.section->vma; - cache_ptr->symbol.flags = visible; - break; - - case N_BSS: case N_BSS | N_EXT: - cache_ptr->symbol.section = obj_bsssec (abfd); - cache_ptr->symbol.value -= cache_ptr->symbol.section->vma; - cache_ptr->symbol.flags = visible; - break; - - case N_SETA: case N_SETA | N_EXT: - case N_SETT: case N_SETT | N_EXT: - case N_SETD: case N_SETD | N_EXT: - case N_SETB: case N_SETB | N_EXT: - { - /* This code is no longer needed. It used to be used to make - the linker handle set symbols, but they are now handled in - the add_symbols routine instead. */ -#if 0 - asection *section; - arelent_chain *reloc; - asection *into_section; - - /* This is a set symbol. The name of the symbol is the name - of the set (e.g., __CTOR_LIST__). The value of the symbol - is the value to add to the set. We create a section with - the same name as the symbol, and add a reloc to insert the - appropriate value into the section. - - This action is actually obsolete; it used to make the - linker do the right thing, but the linker no longer uses - this function. */ - - section = bfd_get_section_by_name (abfd, cache_ptr->symbol.name); - if (section == NULL) - { - char *copy; - - copy = bfd_alloc (abfd, strlen (cache_ptr->symbol.name) + 1); - if (copy == NULL) - return false; - - strcpy (copy, cache_ptr->symbol.name); - section = bfd_make_section (abfd, copy); - if (section == NULL) - return false; - } - - reloc = (arelent_chain *) bfd_alloc (abfd, sizeof (arelent_chain)); - if (reloc == NULL) - return false; - - /* Build a relocation entry for the constructor. */ - switch (cache_ptr->type & N_TYPE) - { - case N_SETA: - into_section = bfd_abs_section_ptr; - cache_ptr->type = N_ABS; - break; - case N_SETT: - into_section = obj_textsec (abfd); - cache_ptr->type = N_TEXT; - break; - case N_SETD: - into_section = obj_datasec (abfd); - cache_ptr->type = N_DATA; - break; - case N_SETB: - into_section = obj_bsssec (abfd); - cache_ptr->type = N_BSS; - break; - } - - /* Build a relocation pointing into the constructor section - pointing at the symbol in the set vector specified. */ - reloc->relent.addend = cache_ptr->symbol.value; - cache_ptr->symbol.section = into_section; - reloc->relent.sym_ptr_ptr = into_section->symbol_ptr_ptr; - - /* We modify the symbol to belong to a section depending upon - the name of the symbol, and add to the size of the section - to contain a pointer to the symbol. Build a reloc entry to - relocate to this symbol attached to this section. */ - section->flags = SEC_CONSTRUCTOR | SEC_RELOC; - - section->reloc_count++; - section->alignment_power = 2; - - reloc->next = section->constructor_chain; - section->constructor_chain = reloc; - reloc->relent.address = section->_raw_size; - section->_raw_size += BYTES_IN_WORD; - - reloc->relent.howto = CTOR_TABLE_RELOC_HOWTO(abfd); - -#endif /* 0 */ - - switch (cache_ptr->type & N_TYPE) - { - case N_SETA: - cache_ptr->symbol.section = bfd_abs_section_ptr; - break; - case N_SETT: - cache_ptr->symbol.section = obj_textsec (abfd); - break; - case N_SETD: - cache_ptr->symbol.section = obj_datasec (abfd); - break; - case N_SETB: - cache_ptr->symbol.section = obj_bsssec (abfd); - break; - } - - cache_ptr->symbol.flags |= BSF_CONSTRUCTOR; - } - break; - - case N_WARNING: - /* This symbol is the text of a warning message. The next - symbol is the symbol to associate the warning with. If a - reference is made to that symbol, a warning is issued. */ - cache_ptr->symbol.flags = BSF_DEBUGGING | BSF_WARNING; - cache_ptr->symbol.section = bfd_abs_section_ptr; - break; - - case N_INDR: case N_INDR | N_EXT: - /* An indirect symbol. This consists of two symbols in a row. - The first symbol is the name of the indirection. The second - symbol is the name of the target. A reference to the first - symbol becomes a reference to the second. */ - cache_ptr->symbol.flags = BSF_DEBUGGING | BSF_INDIRECT | visible; - cache_ptr->symbol.section = bfd_ind_section_ptr; - break; - - case N_WEAKU: - cache_ptr->symbol.section = bfd_und_section_ptr; - cache_ptr->symbol.flags = BSF_WEAK; - break; - - case N_WEAKA: - cache_ptr->symbol.section = bfd_abs_section_ptr; - cache_ptr->symbol.flags = BSF_WEAK; - break; - - case N_WEAKT: - cache_ptr->symbol.section = obj_textsec (abfd); - cache_ptr->symbol.value -= cache_ptr->symbol.section->vma; - cache_ptr->symbol.flags = BSF_WEAK; - break; - - case N_WEAKD: - cache_ptr->symbol.section = obj_datasec (abfd); - cache_ptr->symbol.value -= cache_ptr->symbol.section->vma; - cache_ptr->symbol.flags = BSF_WEAK; - break; - - case N_WEAKB: - cache_ptr->symbol.section = obj_bsssec (abfd); - cache_ptr->symbol.value -= cache_ptr->symbol.section->vma; - cache_ptr->symbol.flags = BSF_WEAK; - break; - } - - return true; -} - -/* Set the fields of SYM_POINTER according to CACHE_PTR. */ - -static boolean -translate_to_native_sym_flags (abfd, cache_ptr, sym_pointer) - bfd *abfd; - asymbol *cache_ptr; - struct external_nlist *sym_pointer; -{ - bfd_vma value = cache_ptr->value; - asection *sec; - bfd_vma off; - - /* Mask out any existing type bits in case copying from one section - to another. */ - sym_pointer->e_type[0] &= ~N_TYPE; - - sec = bfd_get_section (cache_ptr); - off = 0; - - if (sec == NULL) - { - /* This case occurs, e.g., for the *DEBUG* section of a COFF - file. */ - (*_bfd_error_handler) - (_("%s: can not represent section for symbol `%s' in a.out object file format"), - bfd_get_filename (abfd), - cache_ptr->name != NULL ? cache_ptr->name : _("*unknown*")); - bfd_set_error (bfd_error_nonrepresentable_section); - return false; - } - - if (sec->output_section != NULL) - { - off = sec->output_offset; - sec = sec->output_section; - } - - if (bfd_is_abs_section (sec)) - sym_pointer->e_type[0] |= N_ABS; - else if (sec == obj_textsec (abfd)) - sym_pointer->e_type[0] |= N_TEXT; - else if (sec == obj_datasec (abfd)) - sym_pointer->e_type[0] |= N_DATA; - else if (sec == obj_bsssec (abfd)) - sym_pointer->e_type[0] |= N_BSS; - else if (bfd_is_und_section (sec)) - sym_pointer->e_type[0] = N_UNDF | N_EXT; - else if (bfd_is_ind_section (sec)) - sym_pointer->e_type[0] = N_INDR; - else if (bfd_is_com_section (sec)) - sym_pointer->e_type[0] = N_UNDF | N_EXT; - else - { - (*_bfd_error_handler) - (_("%s: can not represent section `%s' in a.out object file format"), - bfd_get_filename (abfd), bfd_get_section_name (abfd, sec)); - bfd_set_error (bfd_error_nonrepresentable_section); - return false; - } - - /* Turn the symbol from section relative to absolute again */ - value += sec->vma + off; - - if ((cache_ptr->flags & BSF_WARNING) != 0) - sym_pointer->e_type[0] = N_WARNING; - - if ((cache_ptr->flags & BSF_DEBUGGING) != 0) - sym_pointer->e_type[0] = ((aout_symbol_type *) cache_ptr)->type; - else if ((cache_ptr->flags & BSF_GLOBAL) != 0) - sym_pointer->e_type[0] |= N_EXT; - else if ((cache_ptr->flags & BSF_LOCAL) != 0) - sym_pointer->e_type[0] &= ~N_EXT; - - if ((cache_ptr->flags & BSF_CONSTRUCTOR) != 0) - { - int type = ((aout_symbol_type *) cache_ptr)->type; - switch (type) - { - case N_ABS: type = N_SETA; break; - case N_TEXT: type = N_SETT; break; - case N_DATA: type = N_SETD; break; - case N_BSS: type = N_SETB; break; - } - sym_pointer->e_type[0] = type; - } - - if ((cache_ptr->flags & BSF_WEAK) != 0) - { - int type; - - switch (sym_pointer->e_type[0] & N_TYPE) - { - default: - case N_ABS: type = N_WEAKA; break; - case N_TEXT: type = N_WEAKT; break; - case N_DATA: type = N_WEAKD; break; - case N_BSS: type = N_WEAKB; break; - case N_UNDF: type = N_WEAKU; break; - } - sym_pointer->e_type[0] = type; - } - - PUT_WORD(abfd, value, sym_pointer->e_value); - - return true; -} - -/* Native-level interface to symbols. */ - -asymbol * -NAME(aout,make_empty_symbol) (abfd) - bfd *abfd; -{ - aout_symbol_type *new = - (aout_symbol_type *)bfd_zalloc (abfd, sizeof (aout_symbol_type)); - if (!new) - return NULL; - new->symbol.the_bfd = abfd; - - return &new->symbol; -} - -/* Translate a set of internal symbols into external symbols. */ - -boolean -NAME(aout,translate_symbol_table) (abfd, in, ext, count, str, strsize, dynamic) - bfd *abfd; - aout_symbol_type *in; - struct external_nlist *ext; - bfd_size_type count; - char *str; - bfd_size_type strsize; - boolean dynamic; -{ - struct external_nlist *ext_end; - - ext_end = ext + count; - for (; ext < ext_end; ext++, in++) - { - bfd_vma x; - - x = GET_WORD (abfd, ext->e_strx); - in->symbol.the_bfd = abfd; - - /* For the normal symbols, the zero index points at the number - of bytes in the string table but is to be interpreted as the - null string. For the dynamic symbols, the number of bytes in - the string table is stored in the __DYNAMIC structure and the - zero index points at an actual string. */ - if (x == 0 && ! dynamic) - in->symbol.name = ""; - else if (x < strsize) - in->symbol.name = str + x; - else - return false; - - in->symbol.value = GET_SWORD (abfd, ext->e_value); - in->desc = bfd_h_get_16 (abfd, ext->e_desc); - in->other = bfd_h_get_8 (abfd, ext->e_other); - in->type = bfd_h_get_8 (abfd, ext->e_type); - in->symbol.udata.p = NULL; - - if (! translate_from_native_sym_flags (abfd, in)) - return false; - - if (dynamic) - in->symbol.flags |= BSF_DYNAMIC; - } - - return true; -} - -/* We read the symbols into a buffer, which is discarded when this - function exits. We read the strings into a buffer large enough to - hold them all plus all the cached symbol entries. */ - -boolean -NAME(aout,slurp_symbol_table) (abfd) - bfd *abfd; -{ - struct external_nlist *old_external_syms; - aout_symbol_type *cached; - size_t cached_size; - - /* If there's no work to be done, don't do any */ - if (obj_aout_symbols (abfd) != (aout_symbol_type *) NULL) - return true; - - old_external_syms = obj_aout_external_syms (abfd); - - if (! aout_get_external_symbols (abfd)) - return false; - - cached_size = (obj_aout_external_sym_count (abfd) - * sizeof (aout_symbol_type)); - cached = (aout_symbol_type *) bfd_malloc (cached_size); - if (cached == NULL && cached_size != 0) - return false; - if (cached_size != 0) - memset (cached, 0, cached_size); - - /* Convert from external symbol information to internal. */ - if (! (NAME(aout,translate_symbol_table) - (abfd, cached, - obj_aout_external_syms (abfd), - obj_aout_external_sym_count (abfd), - obj_aout_external_strings (abfd), - obj_aout_external_string_size (abfd), - false))) - { - free (cached); - return false; - } - - bfd_get_symcount (abfd) = obj_aout_external_sym_count (abfd); - - obj_aout_symbols (abfd) = cached; - - /* It is very likely that anybody who calls this function will not - want the external symbol information, so if it was allocated - because of our call to aout_get_external_symbols, we free it up - right away to save space. */ - if (old_external_syms == (struct external_nlist *) NULL - && obj_aout_external_syms (abfd) != (struct external_nlist *) NULL) - { -#ifdef USE_MMAP - bfd_free_window (&obj_aout_sym_window (abfd)); -#else - free (obj_aout_external_syms (abfd)); -#endif - obj_aout_external_syms (abfd) = NULL; - } - - return true; -} - -/* We use a hash table when writing out symbols so that we only write - out a particular string once. This helps particularly when the - linker writes out stabs debugging entries, because each different - contributing object file tends to have many duplicate stabs - strings. - - This hash table code breaks dbx on SunOS 4.1.3, so we don't do it - if BFD_TRADITIONAL_FORMAT is set. */ - -static bfd_size_type add_to_stringtab - PARAMS ((bfd *, struct bfd_strtab_hash *, const char *, boolean)); -static boolean emit_stringtab PARAMS ((bfd *, struct bfd_strtab_hash *)); - -/* Get the index of a string in a strtab, adding it if it is not - already present. */ - -static INLINE bfd_size_type -add_to_stringtab (abfd, tab, str, copy) - bfd *abfd; - struct bfd_strtab_hash *tab; - const char *str; - boolean copy; -{ - boolean hash; - bfd_size_type index; - - /* An index of 0 always means the empty string. */ - if (str == 0 || *str == '\0') - return 0; - - /* Don't hash if BFD_TRADITIONAL_FORMAT is set, because SunOS dbx - doesn't understand a hashed string table. */ - hash = true; - if ((abfd->flags & BFD_TRADITIONAL_FORMAT) != 0) - hash = false; - - index = _bfd_stringtab_add (tab, str, hash, copy); - - if (index != (bfd_size_type) -1) - { - /* Add BYTES_IN_WORD to the return value to account for the - space taken up by the string table size. */ - index += BYTES_IN_WORD; - } - - return index; -} - -/* Write out a strtab. ABFD is already at the right location in the - file. */ - -static boolean -emit_stringtab (abfd, tab) - register bfd *abfd; - struct bfd_strtab_hash *tab; -{ - bfd_byte buffer[BYTES_IN_WORD]; - - /* The string table starts with the size. */ - PUT_WORD (abfd, _bfd_stringtab_size (tab) + BYTES_IN_WORD, buffer); - if (bfd_write ((PTR) buffer, 1, BYTES_IN_WORD, abfd) != BYTES_IN_WORD) - return false; - - return _bfd_stringtab_emit (abfd, tab); -} - -boolean -NAME(aout,write_syms) (abfd) - bfd *abfd; -{ - unsigned int count ; - asymbol **generic = bfd_get_outsymbols (abfd); - struct bfd_strtab_hash *strtab; - - strtab = _bfd_stringtab_init (); - if (strtab == NULL) - return false; - - for (count = 0; count < bfd_get_symcount (abfd); count++) - { - asymbol *g = generic[count]; - bfd_size_type indx; - struct external_nlist nsp; - - indx = add_to_stringtab (abfd, strtab, g->name, false); - if (indx == (bfd_size_type) -1) - goto error_return; - PUT_WORD (abfd, indx, (bfd_byte *) nsp.e_strx); - - if (bfd_asymbol_flavour(g) == abfd->xvec->flavour) - { - bfd_h_put_16(abfd, aout_symbol(g)->desc, nsp.e_desc); - bfd_h_put_8(abfd, aout_symbol(g)->other, nsp.e_other); - bfd_h_put_8(abfd, aout_symbol(g)->type, nsp.e_type); - } - else - { - bfd_h_put_16(abfd,0, nsp.e_desc); - bfd_h_put_8(abfd, 0, nsp.e_other); - bfd_h_put_8(abfd, 0, nsp.e_type); - } - - if (! translate_to_native_sym_flags (abfd, g, &nsp)) - goto error_return; - - if (bfd_write((PTR)&nsp,1,EXTERNAL_NLIST_SIZE, abfd) - != EXTERNAL_NLIST_SIZE) - goto error_return; - - /* NB: `KEEPIT' currently overlays `udata.p', so set this only - here, at the end. */ - g->KEEPIT = count; - } - - if (! emit_stringtab (abfd, strtab)) - goto error_return; - - _bfd_stringtab_free (strtab); - - return true; - -error_return: - _bfd_stringtab_free (strtab); - return false; -} - -long -NAME(aout,get_symtab) (abfd, location) - bfd *abfd; - asymbol **location; -{ - unsigned int counter = 0; - aout_symbol_type *symbase; - - if (!NAME(aout,slurp_symbol_table) (abfd)) - return -1; - - for (symbase = obj_aout_symbols(abfd); counter++ < bfd_get_symcount (abfd);) - *(location++) = (asymbol *) ( symbase++); - *location++ =0; - return bfd_get_symcount (abfd); -} - -/* Standard reloc stuff */ -/* Output standard relocation information to a file in target byte order. */ - -extern void NAME(aout,swap_std_reloc_out) - PARAMS ((bfd *, arelent *, struct reloc_std_external *)); - -void -NAME(aout,swap_std_reloc_out) (abfd, g, natptr) - bfd *abfd; - arelent *g; - struct reloc_std_external *natptr; -{ - int r_index; - asymbol *sym = *(g->sym_ptr_ptr); - int r_extern; - unsigned int r_length; - int r_pcrel; - int r_baserel, r_jmptable, r_relative; - asection *output_section = sym->section->output_section; - - PUT_WORD(abfd, g->address, natptr->r_address); - - r_length = g->howto->size ; /* Size as a power of two */ - r_pcrel = (int) g->howto->pc_relative; /* Relative to PC? */ - /* XXX This relies on relocs coming from a.out files. */ - r_baserel = (g->howto->type & 8) != 0; - r_jmptable = (g->howto->type & 16) != 0; - r_relative = (g->howto->type & 32) != 0; - -#if 0 - /* For a standard reloc, the addend is in the object file. */ - r_addend = g->addend + (*(g->sym_ptr_ptr))->section->output_section->vma; -#endif - - /* name was clobbered by aout_write_syms to be symbol index */ - - /* If this relocation is relative to a symbol then set the - r_index to the symbols index, and the r_extern bit. - - Absolute symbols can come in in two ways, either as an offset - from the abs section, or as a symbol which has an abs value. - check for that here - */ - - if (bfd_is_com_section (output_section) - || bfd_is_abs_section (output_section) - || bfd_is_und_section (output_section)) - { - if (bfd_abs_section_ptr->symbol == sym) - { - /* Whoops, looked like an abs symbol, but is really an offset - from the abs section */ - r_index = N_ABS; - r_extern = 0; - } - else - { - /* Fill in symbol */ - r_extern = 1; - r_index = (*(g->sym_ptr_ptr))->KEEPIT; - - } - } - else - { - /* Just an ordinary section */ - r_extern = 0; - r_index = output_section->target_index; - } - - /* now the fun stuff */ - if (bfd_header_big_endian (abfd)) { - natptr->r_index[0] = r_index >> 16; - natptr->r_index[1] = r_index >> 8; - natptr->r_index[2] = r_index; - natptr->r_type[0] = - (r_extern? RELOC_STD_BITS_EXTERN_BIG: 0) - | (r_pcrel? RELOC_STD_BITS_PCREL_BIG: 0) - | (r_baserel? RELOC_STD_BITS_BASEREL_BIG: 0) - | (r_jmptable? RELOC_STD_BITS_JMPTABLE_BIG: 0) - | (r_relative? RELOC_STD_BITS_RELATIVE_BIG: 0) - | (r_length << RELOC_STD_BITS_LENGTH_SH_BIG); - } else { - natptr->r_index[2] = r_index >> 16; - natptr->r_index[1] = r_index >> 8; - natptr->r_index[0] = r_index; - natptr->r_type[0] = - (r_extern? RELOC_STD_BITS_EXTERN_LITTLE: 0) - | (r_pcrel? RELOC_STD_BITS_PCREL_LITTLE: 0) - | (r_baserel? RELOC_STD_BITS_BASEREL_LITTLE: 0) - | (r_jmptable? RELOC_STD_BITS_JMPTABLE_LITTLE: 0) - | (r_relative? RELOC_STD_BITS_RELATIVE_LITTLE: 0) - | (r_length << RELOC_STD_BITS_LENGTH_SH_LITTLE); - } -} - -/* Extended stuff */ -/* Output extended relocation information to a file in target byte order. */ - -extern void NAME(aout,swap_ext_reloc_out) - PARAMS ((bfd *, arelent *, struct reloc_ext_external *)); - -void -NAME(aout,swap_ext_reloc_out) (abfd, g, natptr) - bfd *abfd; - arelent *g; - register struct reloc_ext_external *natptr; -{ - int r_index; - int r_extern; - unsigned int r_type; - unsigned int r_addend; - asymbol *sym = *(g->sym_ptr_ptr); - asection *output_section = sym->section->output_section; - - PUT_WORD (abfd, g->address, natptr->r_address); - - r_type = (unsigned int) g->howto->type; - - r_addend = g->addend; - if ((sym->flags & BSF_SECTION_SYM) != 0) - r_addend += (*(g->sym_ptr_ptr))->section->output_section->vma; - - /* If this relocation is relative to a symbol then set the - r_index to the symbols index, and the r_extern bit. - - Absolute symbols can come in in two ways, either as an offset - from the abs section, or as a symbol which has an abs value. - check for that here. */ - - if (bfd_is_abs_section (bfd_get_section (sym))) - { - r_extern = 0; - r_index = N_ABS; - } - else if ((sym->flags & BSF_SECTION_SYM) == 0) - { - if (bfd_is_und_section (bfd_get_section (sym)) - || (sym->flags & BSF_GLOBAL) != 0) - r_extern = 1; - else - r_extern = 0; - r_index = (*(g->sym_ptr_ptr))->KEEPIT; - } - else - { - /* Just an ordinary section */ - r_extern = 0; - r_index = output_section->target_index; - } - - /* now the fun stuff */ - if (bfd_header_big_endian (abfd)) { - natptr->r_index[0] = r_index >> 16; - natptr->r_index[1] = r_index >> 8; - natptr->r_index[2] = r_index; - natptr->r_type[0] = - ((r_extern? RELOC_EXT_BITS_EXTERN_BIG: 0) - | (r_type << RELOC_EXT_BITS_TYPE_SH_BIG)); - } else { - natptr->r_index[2] = r_index >> 16; - natptr->r_index[1] = r_index >> 8; - natptr->r_index[0] = r_index; - natptr->r_type[0] = - (r_extern? RELOC_EXT_BITS_EXTERN_LITTLE: 0) - | (r_type << RELOC_EXT_BITS_TYPE_SH_LITTLE); - } - - PUT_WORD (abfd, r_addend, natptr->r_addend); -} - -/* BFD deals internally with all things based from the section they're - in. so, something in 10 bytes into a text section with a base of - 50 would have a symbol (.text+10) and know .text vma was 50. - - Aout keeps all it's symbols based from zero, so the symbol would - contain 60. This macro subs the base of each section from the value - to give the true offset from the section */ - -#define MOVE_ADDRESS(ad) \ - if (r_extern) { \ - /* undefined symbol */ \ - cache_ptr->sym_ptr_ptr = symbols + r_index; \ - cache_ptr->addend = ad; \ - } else { \ - /* defined, section relative. replace symbol with pointer to \ - symbol which points to section */ \ - switch (r_index) { \ - case N_TEXT: \ - case N_TEXT | N_EXT: \ - cache_ptr->sym_ptr_ptr = obj_textsec(abfd)->symbol_ptr_ptr; \ - cache_ptr->addend = ad - su->textsec->vma; \ - break; \ - case N_DATA: \ - case N_DATA | N_EXT: \ - cache_ptr->sym_ptr_ptr = obj_datasec(abfd)->symbol_ptr_ptr; \ - cache_ptr->addend = ad - su->datasec->vma; \ - break; \ - case N_BSS: \ - case N_BSS | N_EXT: \ - cache_ptr->sym_ptr_ptr = obj_bsssec(abfd)->symbol_ptr_ptr; \ - cache_ptr->addend = ad - su->bsssec->vma; \ - break; \ - default: \ - case N_ABS: \ - case N_ABS | N_EXT: \ - cache_ptr->sym_ptr_ptr = bfd_abs_section_ptr->symbol_ptr_ptr; \ - cache_ptr->addend = ad; \ - break; \ - } \ - } \ - -void -NAME(aout,swap_ext_reloc_in) (abfd, bytes, cache_ptr, symbols, symcount) - bfd *abfd; - struct reloc_ext_external *bytes; - arelent *cache_ptr; - asymbol **symbols; - bfd_size_type symcount; -{ - unsigned int r_index; - int r_extern; - unsigned int r_type; - struct aoutdata *su = &(abfd->tdata.aout_data->a); - - cache_ptr->address = (GET_SWORD (abfd, bytes->r_address)); - - /* now the fun stuff */ - if (bfd_header_big_endian (abfd)) { - r_index = (bytes->r_index[0] << 16) - | (bytes->r_index[1] << 8) - | bytes->r_index[2]; - r_extern = (0 != (bytes->r_type[0] & RELOC_EXT_BITS_EXTERN_BIG)); - r_type = (bytes->r_type[0] & RELOC_EXT_BITS_TYPE_BIG) - >> RELOC_EXT_BITS_TYPE_SH_BIG; - } else { - r_index = (bytes->r_index[2] << 16) - | (bytes->r_index[1] << 8) - | bytes->r_index[0]; - r_extern = (0 != (bytes->r_type[0] & RELOC_EXT_BITS_EXTERN_LITTLE)); - r_type = (bytes->r_type[0] & RELOC_EXT_BITS_TYPE_LITTLE) - >> RELOC_EXT_BITS_TYPE_SH_LITTLE; - } - - cache_ptr->howto = howto_table_ext + r_type; - - /* Base relative relocs are always against the symbol table, - regardless of the setting of r_extern. r_extern just reflects - whether the symbol the reloc is against is local or global. */ - if (r_type == RELOC_BASE10 - || r_type == RELOC_BASE13 - || r_type == RELOC_BASE22) - r_extern = 1; - - if (r_extern && r_index > symcount) - { - /* We could arrange to return an error, but it might be useful - to see the file even if it is bad. */ - r_extern = 0; - r_index = N_ABS; - } - - MOVE_ADDRESS(GET_SWORD(abfd, bytes->r_addend)); -} - -void -NAME(aout,swap_std_reloc_in) (abfd, bytes, cache_ptr, symbols, symcount) - bfd *abfd; - struct reloc_std_external *bytes; - arelent *cache_ptr; - asymbol **symbols; - bfd_size_type symcount; -{ - unsigned int r_index; - int r_extern; - unsigned int r_length; - int r_pcrel; - int r_baserel, r_jmptable, r_relative; - struct aoutdata *su = &(abfd->tdata.aout_data->a); - unsigned int howto_idx; - - cache_ptr->address = bfd_h_get_32 (abfd, bytes->r_address); - - /* now the fun stuff */ - if (bfd_header_big_endian (abfd)) { - r_index = (bytes->r_index[0] << 16) - | (bytes->r_index[1] << 8) - | bytes->r_index[2]; - r_extern = (0 != (bytes->r_type[0] & RELOC_STD_BITS_EXTERN_BIG)); - r_pcrel = (0 != (bytes->r_type[0] & RELOC_STD_BITS_PCREL_BIG)); - r_baserel = (0 != (bytes->r_type[0] & RELOC_STD_BITS_BASEREL_BIG)); - r_jmptable= (0 != (bytes->r_type[0] & RELOC_STD_BITS_JMPTABLE_BIG)); - r_relative= (0 != (bytes->r_type[0] & RELOC_STD_BITS_RELATIVE_BIG)); - r_length = (bytes->r_type[0] & RELOC_STD_BITS_LENGTH_BIG) - >> RELOC_STD_BITS_LENGTH_SH_BIG; - } else { - r_index = (bytes->r_index[2] << 16) - | (bytes->r_index[1] << 8) - | bytes->r_index[0]; - r_extern = (0 != (bytes->r_type[0] & RELOC_STD_BITS_EXTERN_LITTLE)); - r_pcrel = (0 != (bytes->r_type[0] & RELOC_STD_BITS_PCREL_LITTLE)); - r_baserel = (0 != (bytes->r_type[0] & RELOC_STD_BITS_BASEREL_LITTLE)); - r_jmptable= (0 != (bytes->r_type[0] & RELOC_STD_BITS_JMPTABLE_LITTLE)); - r_relative= (0 != (bytes->r_type[0] & RELOC_STD_BITS_RELATIVE_LITTLE)); - r_length = (bytes->r_type[0] & RELOC_STD_BITS_LENGTH_LITTLE) - >> RELOC_STD_BITS_LENGTH_SH_LITTLE; - } - - howto_idx = r_length + 4 * r_pcrel + 8 * r_baserel - + 16 * r_jmptable + 32 * r_relative; - BFD_ASSERT (howto_idx < TABLE_SIZE (howto_table_std)); - cache_ptr->howto = howto_table_std + howto_idx; - BFD_ASSERT (cache_ptr->howto->type != (unsigned int) -1); - - /* Base relative relocs are always against the symbol table, - regardless of the setting of r_extern. r_extern just reflects - whether the symbol the reloc is against is local or global. */ - if (r_baserel) - r_extern = 1; - - if (r_extern && r_index > symcount) - { - /* We could arrange to return an error, but it might be useful - to see the file even if it is bad. */ - r_extern = 0; - r_index = N_ABS; - } - - MOVE_ADDRESS(0); -} - -/* Read and swap the relocs for a section. */ - -boolean -NAME(aout,slurp_reloc_table) (abfd, asect, symbols) - bfd *abfd; - sec_ptr asect; - asymbol **symbols; -{ - unsigned int count; - bfd_size_type reloc_size; - PTR relocs; - arelent *reloc_cache; - size_t each_size; - unsigned int counter = 0; - arelent *cache_ptr; - - if (asect->relocation) - return true; - - if (asect->flags & SEC_CONSTRUCTOR) - return true; - - if (asect == obj_datasec (abfd)) - reloc_size = exec_hdr(abfd)->a_drsize; - else if (asect == obj_textsec (abfd)) - reloc_size = exec_hdr(abfd)->a_trsize; - else if (asect == obj_bsssec (abfd)) - reloc_size = 0; - else - { - bfd_set_error (bfd_error_invalid_operation); - return false; - } - - if (bfd_seek (abfd, asect->rel_filepos, SEEK_SET) != 0) - return false; - - each_size = obj_reloc_entry_size (abfd); - - count = reloc_size / each_size; - - reloc_cache = (arelent *) bfd_malloc ((size_t) (count * sizeof (arelent))); - if (reloc_cache == NULL && count != 0) - return false; - memset (reloc_cache, 0, count * sizeof (arelent)); - - relocs = bfd_malloc ((size_t) reloc_size); - if (relocs == NULL && reloc_size != 0) - { - free (reloc_cache); - return false; - } - - if (bfd_read (relocs, 1, reloc_size, abfd) != reloc_size) - { - free (relocs); - free (reloc_cache); - return false; - } - - cache_ptr = reloc_cache; - if (each_size == RELOC_EXT_SIZE) - { - register struct reloc_ext_external *rptr = - (struct reloc_ext_external *) relocs; - - for (; counter < count; counter++, rptr++, cache_ptr++) - MY_swap_ext_reloc_in (abfd, rptr, cache_ptr, symbols, - bfd_get_symcount (abfd)); - } - else - { - register struct reloc_std_external *rptr = - (struct reloc_std_external *) relocs; - - for (; counter < count; counter++, rptr++, cache_ptr++) - MY_swap_std_reloc_in (abfd, rptr, cache_ptr, symbols, - bfd_get_symcount (abfd)); - } - - free (relocs); - - asect->relocation = reloc_cache; - asect->reloc_count = cache_ptr - reloc_cache; - - return true; -} - -/* Write out a relocation section into an object file. */ - -boolean -NAME(aout,squirt_out_relocs) (abfd, section) - bfd *abfd; - asection *section; -{ - arelent **generic; - unsigned char *native, *natptr; - size_t each_size; - - unsigned int count = section->reloc_count; - size_t natsize; - - if (count == 0 || section->orelocation == NULL) - return true; - - each_size = obj_reloc_entry_size (abfd); - natsize = each_size * count; - native = (unsigned char *) bfd_zalloc (abfd, natsize); - if (!native) - return false; - - generic = section->orelocation; - - if (each_size == RELOC_EXT_SIZE) - { - for (natptr = native; - count != 0; - --count, natptr += each_size, ++generic) - MY_swap_ext_reloc_out (abfd, *generic, - (struct reloc_ext_external *) natptr); - } - else - { - for (natptr = native; - count != 0; - --count, natptr += each_size, ++generic) - MY_swap_std_reloc_out(abfd, *generic, (struct reloc_std_external *)natptr); - } - - if ( bfd_write ((PTR) native, 1, natsize, abfd) != natsize) { - bfd_release(abfd, native); - return false; - } - bfd_release (abfd, native); - - return true; -} - -/* This is stupid. This function should be a boolean predicate */ -long -NAME(aout,canonicalize_reloc) (abfd, section, relptr, symbols) - bfd *abfd; - sec_ptr section; - arelent **relptr; - asymbol **symbols; -{ - arelent *tblptr = section->relocation; - unsigned int count; - - if (section == obj_bsssec (abfd)) - { - *relptr = NULL; - return 0; - } - - if (!(tblptr || NAME(aout,slurp_reloc_table) (abfd, section, symbols))) - return -1; - - if (section->flags & SEC_CONSTRUCTOR) { - arelent_chain *chain = section->constructor_chain; - for (count = 0; count < section->reloc_count; count ++) { - *relptr ++ = &chain->relent; - chain = chain->next; - } - } - else { - tblptr = section->relocation; - - for (count = 0; count++ < section->reloc_count;) - { - *relptr++ = tblptr++; - } - } - *relptr = 0; - - return section->reloc_count; -} - -long -NAME(aout,get_reloc_upper_bound) (abfd, asect) - bfd *abfd; - sec_ptr asect; -{ - if (bfd_get_format (abfd) != bfd_object) { - bfd_set_error (bfd_error_invalid_operation); - return -1; - } - if (asect->flags & SEC_CONSTRUCTOR) { - return (sizeof (arelent *) * (asect->reloc_count+1)); - } - - if (asect == obj_datasec (abfd)) - return (sizeof (arelent *) - * ((exec_hdr(abfd)->a_drsize / obj_reloc_entry_size (abfd)) - + 1)); - - if (asect == obj_textsec (abfd)) - return (sizeof (arelent *) - * ((exec_hdr(abfd)->a_trsize / obj_reloc_entry_size (abfd)) - + 1)); - - if (asect == obj_bsssec (abfd)) - return sizeof (arelent *); - - if (asect == obj_bsssec (abfd)) - return 0; - - bfd_set_error (bfd_error_invalid_operation); - return -1; -} - -long -NAME(aout,get_symtab_upper_bound) (abfd) - bfd *abfd; -{ - if (!NAME(aout,slurp_symbol_table) (abfd)) - return -1; - - return (bfd_get_symcount (abfd)+1) * (sizeof (aout_symbol_type *)); -} - - alent * -NAME(aout,get_lineno) (ignore_abfd, ignore_symbol) - bfd *ignore_abfd ATTRIBUTE_UNUSED; - asymbol *ignore_symbol ATTRIBUTE_UNUSED; -{ - return (alent *)NULL; -} - -void -NAME(aout,get_symbol_info) (ignore_abfd, symbol, ret) - bfd *ignore_abfd ATTRIBUTE_UNUSED; - asymbol *symbol; - symbol_info *ret; -{ - bfd_symbol_info (symbol, ret); - - if (ret->type == '?') - { - int type_code = aout_symbol(symbol)->type & 0xff; - const char *stab_name = bfd_get_stab_name (type_code); - static char buf[10]; - - if (stab_name == NULL) - { - sprintf (buf, "(%d)", type_code); - stab_name = buf; - } - ret->type = '-'; - ret->stab_type = type_code; - ret->stab_other = (unsigned) (aout_symbol(symbol)->other & 0xff); - ret->stab_desc = (unsigned) (aout_symbol(symbol)->desc & 0xffff); - ret->stab_name = stab_name; - } -} - -void -NAME(aout,print_symbol) (ignore_abfd, afile, symbol, how) - bfd *ignore_abfd ATTRIBUTE_UNUSED; - PTR afile; - asymbol *symbol; - bfd_print_symbol_type how; -{ - FILE *file = (FILE *)afile; - - switch (how) { - case bfd_print_symbol_name: - if (symbol->name) - fprintf (file,"%s", symbol->name); - break; - case bfd_print_symbol_more: - fprintf (file,"%4x %2x %2x",(unsigned) (aout_symbol(symbol)->desc & 0xffff), - (unsigned) (aout_symbol(symbol)->other & 0xff), - (unsigned) (aout_symbol(symbol)->type)); - break; - case bfd_print_symbol_all: - { - CONST char *section_name = symbol->section->name; - - bfd_print_symbol_vandf((PTR)file,symbol); - - fprintf (file," %-5s %04x %02x %02x", - section_name, - (unsigned) (aout_symbol(symbol)->desc & 0xffff), - (unsigned) (aout_symbol(symbol)->other & 0xff), - (unsigned) (aout_symbol(symbol)->type & 0xff)); - if (symbol->name) - fprintf (file," %s", symbol->name); - } - break; - } -} - -/* If we don't have to allocate more than 1MB to hold the generic - symbols, we use the generic minisymbol methord: it's faster, since - it only translates the symbols once, not multiple times. */ -#define MINISYM_THRESHOLD (1000000 / sizeof (asymbol)) - -/* Read minisymbols. For minisymbols, we use the unmodified a.out - symbols. The minisymbol_to_symbol function translates these into - BFD asymbol structures. */ - -long -NAME(aout,read_minisymbols) (abfd, dynamic, minisymsp, sizep) - bfd *abfd; - boolean dynamic; - PTR *minisymsp; - unsigned int *sizep; -{ - if (dynamic) - { - /* We could handle the dynamic symbols here as well, but it's - easier to hand them off. */ - return _bfd_generic_read_minisymbols (abfd, dynamic, minisymsp, sizep); - } - - if (! aout_get_external_symbols (abfd)) - return -1; - - if (obj_aout_external_sym_count (abfd) < MINISYM_THRESHOLD) - return _bfd_generic_read_minisymbols (abfd, dynamic, minisymsp, sizep); - - *minisymsp = (PTR) obj_aout_external_syms (abfd); - - /* By passing the external symbols back from this routine, we are - giving up control over the memory block. Clear - obj_aout_external_syms, so that we do not try to free it - ourselves. */ - obj_aout_external_syms (abfd) = NULL; - - *sizep = EXTERNAL_NLIST_SIZE; - return obj_aout_external_sym_count (abfd); -} - -/* Convert a minisymbol to a BFD asymbol. A minisymbol is just an - unmodified a.out symbol. The SYM argument is a structure returned - by bfd_make_empty_symbol, which we fill in here. */ - -asymbol * -NAME(aout,minisymbol_to_symbol) (abfd, dynamic, minisym, sym) - bfd *abfd; - boolean dynamic; - const PTR minisym; - asymbol *sym; -{ - if (dynamic - || obj_aout_external_sym_count (abfd) < MINISYM_THRESHOLD) - return _bfd_generic_minisymbol_to_symbol (abfd, dynamic, minisym, sym); - - memset (sym, 0, sizeof (aout_symbol_type)); - - /* We call translate_symbol_table to translate a single symbol. */ - if (! (NAME(aout,translate_symbol_table) - (abfd, - (aout_symbol_type *) sym, - (struct external_nlist *) minisym, - (bfd_size_type) 1, - obj_aout_external_strings (abfd), - obj_aout_external_string_size (abfd), - false))) - return NULL; - - return sym; -} - -/* - provided a BFD, a section and an offset into the section, calculate - and return the name of the source file and the line nearest to the - wanted location. -*/ - -boolean -NAME(aout,find_nearest_line) - (abfd, section, symbols, offset, filename_ptr, functionname_ptr, line_ptr) - bfd *abfd; - asection *section; - asymbol **symbols; - bfd_vma offset; - CONST char **filename_ptr; - CONST char **functionname_ptr; - unsigned int *line_ptr; -{ - /* Run down the file looking for the filename, function and linenumber */ - asymbol **p; - CONST char *directory_name = NULL; - CONST char *main_file_name = NULL; - CONST char *current_file_name = NULL; - CONST char *line_file_name = NULL; /* Value of current_file_name at line number. */ - CONST char *line_directory_name = NULL; /* Value of directory_name at line number. */ - bfd_vma low_line_vma = 0; - bfd_vma low_func_vma = 0; - asymbol *func = 0; - size_t filelen, funclen; - char *buf; - - *filename_ptr = abfd->filename; - *functionname_ptr = 0; - *line_ptr = 0; - if (symbols != (asymbol **)NULL) { - for (p = symbols; *p; p++) { - aout_symbol_type *q = (aout_symbol_type *) (*p); - next: - switch (q->type){ - case N_TEXT: - /* If this looks like a file name symbol, and it comes after - the line number we have found so far, but before the - offset, then we have probably not found the right line - number. */ - if (q->symbol.value <= offset - && ((q->symbol.value > low_line_vma - && (line_file_name != NULL - || *line_ptr != 0)) - || (q->symbol.value > low_func_vma - && func != NULL))) - { - const char *symname; - - symname = q->symbol.name; - if (strcmp (symname + strlen (symname) - 2, ".o") == 0) - { - if (q->symbol.value > low_line_vma) - { - *line_ptr = 0; - line_file_name = NULL; - } - if (q->symbol.value > low_func_vma) - func = NULL; - } - } - break; - - case N_SO: - /* If this symbol is less than the offset, but greater than - the line number we have found so far, then we have not - found the right line number. */ - if (q->symbol.value <= offset) - { - if (q->symbol.value > low_line_vma) - { - *line_ptr = 0; - line_file_name = NULL; - } - if (q->symbol.value > low_func_vma) - func = NULL; - } - - main_file_name = current_file_name = q->symbol.name; - /* Look ahead to next symbol to check if that too is an N_SO. */ - p++; - if (*p == NULL) - break; - q = (aout_symbol_type *) (*p); - if (q->type != (int)N_SO) - goto next; - - /* Found a second N_SO First is directory; second is filename. */ - directory_name = current_file_name; - main_file_name = current_file_name = q->symbol.name; - if (obj_textsec(abfd) != section) - goto done; - break; - case N_SOL: - current_file_name = q->symbol.name; - break; - - case N_SLINE: - - case N_DSLINE: - case N_BSLINE: - /* We'll keep this if it resolves nearer than the one we have - already. */ - if (q->symbol.value >= low_line_vma - && q->symbol.value <= offset) - { - *line_ptr = q->desc; - low_line_vma = q->symbol.value; - line_file_name = current_file_name; - line_directory_name = directory_name; - } - break; - case N_FUN: - { - /* We'll keep this if it is nearer than the one we have already */ - if (q->symbol.value >= low_func_vma && - q->symbol.value <= offset) { - low_func_vma = q->symbol.value; - func = (asymbol *)q; - } - else if (q->symbol.value > offset) - goto done; - } - break; - } - } - } - - done: - if (*line_ptr != 0) - { - main_file_name = line_file_name; - directory_name = line_directory_name; - } - - if (main_file_name == NULL - || IS_ABSOLUTE_PATH (main_file_name) - || directory_name == NULL) - filelen = 0; - else - filelen = strlen (directory_name) + strlen (main_file_name); - if (func == NULL) - funclen = 0; - else - funclen = strlen (bfd_asymbol_name (func)); - - if (adata (abfd).line_buf != NULL) - free (adata (abfd).line_buf); - if (filelen + funclen == 0) - adata (abfd).line_buf = buf = NULL; - else - { - buf = (char *) bfd_malloc (filelen + funclen + 3); - adata (abfd).line_buf = buf; - if (buf == NULL) - return false; - } - - if (main_file_name != NULL) - { - if (IS_ABSOLUTE_PATH (main_file_name) || directory_name == NULL) - *filename_ptr = main_file_name; - else - { - sprintf (buf, "%s%s", directory_name, main_file_name); - *filename_ptr = buf; - buf += filelen + 1; - } - } - - if (func) - { - const char *function = func->name; - char *p; - - /* The caller expects a symbol name. We actually have a - function name, without the leading underscore. Put the - underscore back in, so that the caller gets a symbol name. */ - if (bfd_get_symbol_leading_char (abfd) == '\0') - strcpy (buf, function); - else - { - buf[0] = bfd_get_symbol_leading_char (abfd); - strcpy (buf + 1, function); - } - /* Have to remove : stuff */ - p = strchr (buf, ':'); - if (p != NULL) - *p = '\0'; - *functionname_ptr = buf; - } - - return true; -} - -int -NAME(aout,sizeof_headers) (abfd, execable) - bfd *abfd; - boolean execable ATTRIBUTE_UNUSED; -{ - return adata(abfd).exec_bytes_size; -} - -/* Free all information we have cached for this BFD. We can always - read it again later if we need it. */ - -boolean -NAME(aout,bfd_free_cached_info) (abfd) - bfd *abfd; -{ - asection *o; - - if (bfd_get_format (abfd) != bfd_object - || abfd->tdata.aout_data == NULL) - return true; - -#define BFCI_FREE(x) if (x != NULL) { free (x); x = NULL; } - BFCI_FREE (obj_aout_symbols (abfd)); -#ifdef USE_MMAP - obj_aout_external_syms (abfd) = 0; - bfd_free_window (&obj_aout_sym_window (abfd)); - bfd_free_window (&obj_aout_string_window (abfd)); - obj_aout_external_strings (abfd) = 0; -#else - BFCI_FREE (obj_aout_external_syms (abfd)); - BFCI_FREE (obj_aout_external_strings (abfd)); -#endif - for (o = abfd->sections; o != (asection *) NULL; o = o->next) - BFCI_FREE (o->relocation); -#undef BFCI_FREE - - return true; -} - -/* a.out link code. */ - -static boolean aout_link_add_object_symbols - PARAMS ((bfd *, struct bfd_link_info *)); -static boolean aout_link_check_archive_element - PARAMS ((bfd *, struct bfd_link_info *, boolean *)); -static boolean aout_link_free_symbols PARAMS ((bfd *)); -static boolean aout_link_check_ar_symbols - PARAMS ((bfd *, struct bfd_link_info *, boolean *pneeded)); -static boolean aout_link_add_symbols - PARAMS ((bfd *, struct bfd_link_info *)); - -/* Routine to create an entry in an a.out link hash table. */ - -struct bfd_hash_entry * -NAME(aout,link_hash_newfunc) (entry, table, string) - struct bfd_hash_entry *entry; - struct bfd_hash_table *table; - const char *string; -{ - struct aout_link_hash_entry *ret = (struct aout_link_hash_entry *) entry; - - /* Allocate the structure if it has not already been allocated by a - subclass. */ - if (ret == (struct aout_link_hash_entry *) NULL) - ret = ((struct aout_link_hash_entry *) - bfd_hash_allocate (table, sizeof (struct aout_link_hash_entry))); - if (ret == (struct aout_link_hash_entry *) NULL) - return (struct bfd_hash_entry *) ret; - - /* Call the allocation method of the superclass. */ - ret = ((struct aout_link_hash_entry *) - _bfd_link_hash_newfunc ((struct bfd_hash_entry *) ret, - table, string)); - if (ret) - { - /* Set local fields. */ - ret->written = false; - ret->indx = -1; - } - - return (struct bfd_hash_entry *) ret; -} - -/* Initialize an a.out link hash table. */ - -boolean -NAME(aout,link_hash_table_init) (table, abfd, newfunc) - struct aout_link_hash_table *table; - bfd *abfd; - struct bfd_hash_entry *(*newfunc) PARAMS ((struct bfd_hash_entry *, - struct bfd_hash_table *, - const char *)); -{ - return _bfd_link_hash_table_init (&table->root, abfd, newfunc); -} - -/* Create an a.out link hash table. */ - -struct bfd_link_hash_table * -NAME(aout,link_hash_table_create) (abfd) - bfd *abfd; -{ - struct aout_link_hash_table *ret; - - ret = ((struct aout_link_hash_table *) - bfd_alloc (abfd, sizeof (struct aout_link_hash_table))); - if (ret == NULL) - return (struct bfd_link_hash_table *) NULL; - if (! NAME(aout,link_hash_table_init) (ret, abfd, - NAME(aout,link_hash_newfunc))) - { - free (ret); - return (struct bfd_link_hash_table *) NULL; - } - return &ret->root; -} - -/* Given an a.out BFD, add symbols to the global hash table as - appropriate. */ - -boolean -NAME(aout,link_add_symbols) (abfd, info) - bfd *abfd; - struct bfd_link_info *info; -{ - switch (bfd_get_format (abfd)) - { - case bfd_object: - return aout_link_add_object_symbols (abfd, info); - case bfd_archive: - return _bfd_generic_link_add_archive_symbols - (abfd, info, aout_link_check_archive_element); - default: - bfd_set_error (bfd_error_wrong_format); - return false; - } -} - -/* Add symbols from an a.out object file. */ - -static boolean -aout_link_add_object_symbols (abfd, info) - bfd *abfd; - struct bfd_link_info *info; -{ - if (! aout_get_external_symbols (abfd)) - return false; - if (! aout_link_add_symbols (abfd, info)) - return false; - if (! info->keep_memory) - { - if (! aout_link_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 from - _bfd_generic_link_add_archive_symbols. */ - -static boolean -aout_link_check_archive_element (abfd, info, pneeded) - bfd *abfd; - struct bfd_link_info *info; - boolean *pneeded; -{ - if (! aout_get_external_symbols (abfd)) - return false; - - if (! aout_link_check_ar_symbols (abfd, info, pneeded)) - return false; - - if (*pneeded) - { - if (! aout_link_add_symbols (abfd, info)) - return false; - } - - if (! info->keep_memory || ! *pneeded) - { - if (! aout_link_free_symbols (abfd)) - return false; - } - - return true; -} - -/* Free up the internal symbols read from an a.out file. */ - -static boolean -aout_link_free_symbols (abfd) - bfd *abfd; -{ - if (obj_aout_external_syms (abfd) != (struct external_nlist *) NULL) - { -#ifdef USE_MMAP - bfd_free_window (&obj_aout_sym_window (abfd)); -#else - free ((PTR) obj_aout_external_syms (abfd)); -#endif - obj_aout_external_syms (abfd) = (struct external_nlist *) NULL; - } - if (obj_aout_external_strings (abfd) != (char *) NULL) - { -#ifdef USE_MMAP - bfd_free_window (&obj_aout_string_window (abfd)); -#else - free ((PTR) obj_aout_external_strings (abfd)); -#endif - obj_aout_external_strings (abfd) = (char *) NULL; - } - return true; -} - -/* Look through the internal symbols to see if this object file should - be included in the link. We should include this object file if it - defines any symbols which are currently undefined. If this object - file defines a common symbol, then we may adjust the size of the - known symbol but we do not include the object file in the link - (unless there is some other reason to include it). */ - -static boolean -aout_link_check_ar_symbols (abfd, info, pneeded) - bfd *abfd; - struct bfd_link_info *info; - boolean *pneeded; -{ - register struct external_nlist *p; - struct external_nlist *pend; - char *strings; - - *pneeded = false; - - /* Look through all the symbols. */ - p = obj_aout_external_syms (abfd); - pend = p + obj_aout_external_sym_count (abfd); - strings = obj_aout_external_strings (abfd); - for (; p < pend; p++) - { - int type = bfd_h_get_8 (abfd, p->e_type); - const char *name; - struct bfd_link_hash_entry *h; - - /* Ignore symbols that are not externally visible. This is an - optimization only, as we check the type more thoroughly - below. */ - if (((type & N_EXT) == 0 - || (type & N_STAB) != 0 - || type == N_FN) - && type != N_WEAKA - && type != N_WEAKT - && type != N_WEAKD - && type != N_WEAKB) - { - if (type == N_WARNING - || type == N_INDR) - ++p; - continue; - } - - name = strings + GET_WORD (abfd, p->e_strx); - h = bfd_link_hash_lookup (info->hash, name, false, false, true); - - /* We are only interested in symbols that are currently - undefined or common. */ - if (h == (struct bfd_link_hash_entry *) NULL - || (h->type != bfd_link_hash_undefined - && h->type != bfd_link_hash_common)) - { - if (type == (N_INDR | N_EXT)) - ++p; - continue; - } - - if (type == (N_TEXT | N_EXT) - || type == (N_DATA | N_EXT) - || type == (N_BSS | N_EXT) - || type == (N_ABS | N_EXT) - || type == (N_INDR | N_EXT)) - { - /* This object file defines this symbol. We must link it - in. This is true regardless of whether the current - definition of the symbol is undefined or common. If the - current definition is common, we have a case in which we - have already seen an object file including - int a; - and this object file from the archive includes - int a = 5; - In such a case we must include this object file. - - FIXME: The SunOS 4.1.3 linker will pull in the archive - element if the symbol is defined in the .data section, - but not if it is defined in the .text section. That - seems a bit crazy to me, and I haven't implemented it. - However, it might be correct. */ - if (! (*info->callbacks->add_archive_element) (info, abfd, name)) - return false; - *pneeded = true; - return true; - } - - if (type == (N_UNDF | N_EXT)) - { - bfd_vma value; - - value = GET_WORD (abfd, p->e_value); - if (value != 0) - { - /* This symbol is common in the object from the archive - file. */ - if (h->type == bfd_link_hash_undefined) - { - bfd *symbfd; - unsigned int power; - - symbfd = h->u.undef.abfd; - if (symbfd == (bfd *) NULL) - { - /* This symbol was created as undefined from - outside BFD. We assume that we should link - in the object file. This is done for the -u - option in the linker. */ - if (! (*info->callbacks->add_archive_element) (info, - abfd, - name)) - return false; - *pneeded = true; - return true; - } - /* Turn the current link symbol into a common - symbol. It is already on the undefs list. */ - h->type = bfd_link_hash_common; - h->u.c.p = ((struct bfd_link_hash_common_entry *) - bfd_hash_allocate (&info->hash->table, - sizeof (struct bfd_link_hash_common_entry))); - if (h->u.c.p == NULL) - return false; - - h->u.c.size = value; - - /* FIXME: This isn't quite right. The maximum - alignment of a common symbol should be set by the - architecture of the output file, not of the input - file. */ - power = bfd_log2 (value); - if (power > bfd_get_arch_info (abfd)->section_align_power) - power = bfd_get_arch_info (abfd)->section_align_power; - h->u.c.p->alignment_power = power; - - h->u.c.p->section = bfd_make_section_old_way (symbfd, - "COMMON"); - } - else - { - /* Adjust the size of the common symbol if - necessary. */ - if (value > h->u.c.size) - h->u.c.size = value; - } - } - } - - if (type == N_WEAKA - || type == N_WEAKT - || type == N_WEAKD - || type == N_WEAKB) - { - /* This symbol is weak but defined. We must pull it in if - the current link symbol is undefined, but we don't want - it if the current link symbol is common. */ - if (h->type == bfd_link_hash_undefined) - { - if (! (*info->callbacks->add_archive_element) (info, abfd, name)) - return false; - *pneeded = true; - return true; - } - } - } - - /* We do not need this object file. */ - return true; -} - -/* Add all symbols from an object file to the hash table. */ - -static boolean -aout_link_add_symbols (abfd, info) - bfd *abfd; - struct bfd_link_info *info; -{ - boolean (*add_one_symbol) PARAMS ((struct bfd_link_info *, bfd *, - const char *, flagword, asection *, - bfd_vma, const char *, boolean, - boolean, - struct bfd_link_hash_entry **)); - struct external_nlist *syms; - bfd_size_type sym_count; - char *strings; - boolean copy; - struct aout_link_hash_entry **sym_hash; - register struct external_nlist *p; - struct external_nlist *pend; - - syms = obj_aout_external_syms (abfd); - sym_count = obj_aout_external_sym_count (abfd); - strings = obj_aout_external_strings (abfd); - if (info->keep_memory) - copy = false; - else - copy = true; - - if (aout_backend_info (abfd)->add_dynamic_symbols != NULL) - { - if (! ((*aout_backend_info (abfd)->add_dynamic_symbols) - (abfd, info, &syms, &sym_count, &strings))) - return false; - } - - /* We keep a list of the linker hash table entries that correspond - to particular symbols. We could just look them up in the hash - table, but keeping the list is more efficient. Perhaps this - should be conditional on info->keep_memory. */ - sym_hash = ((struct aout_link_hash_entry **) - bfd_alloc (abfd, - ((size_t) sym_count - * sizeof (struct aout_link_hash_entry *)))); - if (sym_hash == NULL && sym_count != 0) - return false; - obj_aout_sym_hashes (abfd) = sym_hash; - - add_one_symbol = aout_backend_info (abfd)->add_one_symbol; - if (add_one_symbol == NULL) - add_one_symbol = _bfd_generic_link_add_one_symbol; - - p = syms; - pend = p + sym_count; - for (; p < pend; p++, sym_hash++) - { - int type; - const char *name; - bfd_vma value; - asection *section; - flagword flags; - const char *string; - - *sym_hash = NULL; - - type = bfd_h_get_8 (abfd, p->e_type); - - /* Ignore debugging symbols. */ - if ((type & N_STAB) != 0) - continue; - - name = strings + GET_WORD (abfd, p->e_strx); - value = GET_WORD (abfd, p->e_value); - flags = BSF_GLOBAL; - string = NULL; - switch (type) - { - default: - abort (); - - case N_UNDF: - case N_ABS: - case N_TEXT: - case N_DATA: - case N_BSS: - case N_FN_SEQ: - case N_COMM: - case N_SETV: - case N_FN: - /* Ignore symbols that are not externally visible. */ - continue; - case N_INDR: - /* Ignore local indirect symbol. */ - ++p; - ++sym_hash; - continue; - - case N_UNDF | N_EXT: - if (value == 0) - { - section = bfd_und_section_ptr; - flags = 0; - } - else - section = bfd_com_section_ptr; - break; - case N_ABS | N_EXT: - section = bfd_abs_section_ptr; - break; - case N_TEXT | N_EXT: - section = obj_textsec (abfd); - value -= bfd_get_section_vma (abfd, section); - break; - case N_DATA | N_EXT: - case N_SETV | N_EXT: - /* Treat N_SETV symbols as N_DATA symbol; see comment in - translate_from_native_sym_flags. */ - section = obj_datasec (abfd); - value -= bfd_get_section_vma (abfd, section); - break; - case N_BSS | N_EXT: - section = obj_bsssec (abfd); - value -= bfd_get_section_vma (abfd, section); - break; - case N_INDR | N_EXT: - /* An indirect symbol. The next symbol is the symbol - which this one really is. */ - BFD_ASSERT (p + 1 < pend); - ++p; - string = strings + GET_WORD (abfd, p->e_strx); - section = bfd_ind_section_ptr; - flags |= BSF_INDIRECT; - break; - case N_COMM | N_EXT: - section = bfd_com_section_ptr; - break; - case N_SETA: case N_SETA | N_EXT: - section = bfd_abs_section_ptr; - flags |= BSF_CONSTRUCTOR; - break; - case N_SETT: case N_SETT | N_EXT: - section = obj_textsec (abfd); - flags |= BSF_CONSTRUCTOR; - value -= bfd_get_section_vma (abfd, section); - break; - case N_SETD: case N_SETD | N_EXT: - section = obj_datasec (abfd); - flags |= BSF_CONSTRUCTOR; - value -= bfd_get_section_vma (abfd, section); - break; - case N_SETB: case N_SETB | N_EXT: - section = obj_bsssec (abfd); - flags |= BSF_CONSTRUCTOR; - value -= bfd_get_section_vma (abfd, section); - break; - case N_WARNING: - /* A warning symbol. The next symbol is the one to warn - about. */ - BFD_ASSERT (p + 1 < pend); - ++p; - string = name; - name = strings + GET_WORD (abfd, p->e_strx); - section = bfd_und_section_ptr; - flags |= BSF_WARNING; - break; - case N_WEAKU: - section = bfd_und_section_ptr; - flags = BSF_WEAK; - break; - case N_WEAKA: - section = bfd_abs_section_ptr; - flags = BSF_WEAK; - break; - case N_WEAKT: - section = obj_textsec (abfd); - value -= bfd_get_section_vma (abfd, section); - flags = BSF_WEAK; - break; - case N_WEAKD: - section = obj_datasec (abfd); - value -= bfd_get_section_vma (abfd, section); - flags = BSF_WEAK; - break; - case N_WEAKB: - section = obj_bsssec (abfd); - value -= bfd_get_section_vma (abfd, section); - flags = BSF_WEAK; - break; - } - - if (! ((*add_one_symbol) - (info, abfd, name, flags, section, value, string, copy, false, - (struct bfd_link_hash_entry **) sym_hash))) - return false; - - /* Restrict the maximum alignment of a common symbol based on - the architecture, since a.out has no way to represent - alignment requirements of a section in a .o file. FIXME: - This isn't quite right: it should use the architecture of the - output file, not the input files. */ - if ((*sym_hash)->root.type == bfd_link_hash_common - && ((*sym_hash)->root.u.c.p->alignment_power > - bfd_get_arch_info (abfd)->section_align_power)) - (*sym_hash)->root.u.c.p->alignment_power = - bfd_get_arch_info (abfd)->section_align_power; - - /* If this is a set symbol, and we are not building sets, then - it is possible for the hash entry to not have been set. In - such a case, treat the symbol as not globally defined. */ - if ((*sym_hash)->root.type == bfd_link_hash_new) - { - BFD_ASSERT ((flags & BSF_CONSTRUCTOR) != 0); - *sym_hash = NULL; - } - - if (type == (N_INDR | N_EXT) || type == N_WARNING) - ++sym_hash; - } - - return true; -} - -/* A hash table used for header files with N_BINCL entries. */ - -struct aout_link_includes_table -{ - struct bfd_hash_table root; -}; - -/* A linked list of totals that we have found for a particular header - file. */ - -struct aout_link_includes_totals -{ - struct aout_link_includes_totals *next; - bfd_vma total; -}; - -/* An entry in the header file hash table. */ - -struct aout_link_includes_entry -{ - struct bfd_hash_entry root; - /* List of totals we have found for this file. */ - struct aout_link_includes_totals *totals; -}; - -/* Look up an entry in an the header file hash table. */ - -#define aout_link_includes_lookup(table, string, create, copy) \ - ((struct aout_link_includes_entry *) \ - bfd_hash_lookup (&(table)->root, (string), (create), (copy))) - -/* During the final link step we need to pass around a bunch of - information, so we do it in an instance of this structure. */ - -struct aout_final_link_info -{ - /* General link information. */ - struct bfd_link_info *info; - /* Output bfd. */ - bfd *output_bfd; - /* Reloc file positions. */ - file_ptr treloff, dreloff; - /* File position of symbols. */ - file_ptr symoff; - /* String table. */ - struct bfd_strtab_hash *strtab; - /* Header file hash table. */ - struct aout_link_includes_table includes; - /* A buffer large enough to hold the contents of any section. */ - bfd_byte *contents; - /* A buffer large enough to hold the relocs of any section. */ - PTR relocs; - /* A buffer large enough to hold the symbol map of any input BFD. */ - int *symbol_map; - /* A buffer large enough to hold output symbols of any input BFD. */ - struct external_nlist *output_syms; -}; - -static struct bfd_hash_entry *aout_link_includes_newfunc - PARAMS ((struct bfd_hash_entry *, struct bfd_hash_table *, const char *)); -static boolean aout_link_input_bfd - PARAMS ((struct aout_final_link_info *, bfd *input_bfd)); -static boolean aout_link_write_symbols - PARAMS ((struct aout_final_link_info *, bfd *input_bfd)); -static boolean aout_link_write_other_symbol - PARAMS ((struct aout_link_hash_entry *, PTR)); -static boolean aout_link_input_section - PARAMS ((struct aout_final_link_info *, bfd *input_bfd, - asection *input_section, file_ptr *reloff_ptr, - bfd_size_type rel_size)); -static boolean aout_link_input_section_std - PARAMS ((struct aout_final_link_info *, bfd *input_bfd, - asection *input_section, struct reloc_std_external *, - bfd_size_type rel_size, bfd_byte *contents)); -static boolean aout_link_input_section_ext - PARAMS ((struct aout_final_link_info *, bfd *input_bfd, - asection *input_section, struct reloc_ext_external *, - bfd_size_type rel_size, bfd_byte *contents)); -static INLINE asection *aout_reloc_index_to_section - PARAMS ((bfd *, int)); -static boolean aout_link_reloc_link_order - PARAMS ((struct aout_final_link_info *, asection *, - struct bfd_link_order *)); - -/* The function to create a new entry in the header file hash table. */ - -static struct bfd_hash_entry * -aout_link_includes_newfunc (entry, table, string) - struct bfd_hash_entry *entry; - struct bfd_hash_table *table; - const char *string; -{ - struct aout_link_includes_entry *ret = - (struct aout_link_includes_entry *) entry; - - /* Allocate the structure if it has not already been allocated by a - subclass. */ - if (ret == (struct aout_link_includes_entry *) NULL) - ret = ((struct aout_link_includes_entry *) - bfd_hash_allocate (table, - sizeof (struct aout_link_includes_entry))); - if (ret == (struct aout_link_includes_entry *) NULL) - return (struct bfd_hash_entry *) ret; - - /* Call the allocation method of the superclass. */ - ret = ((struct aout_link_includes_entry *) - bfd_hash_newfunc ((struct bfd_hash_entry *) ret, table, string)); - if (ret) - { - /* Set local fields. */ - ret->totals = NULL; - } - - return (struct bfd_hash_entry *) ret; -} - -/* Do the final link step. This is called on the output BFD. The - INFO structure should point to a list of BFDs linked through the - link_next field which can be used to find each BFD which takes part - in the output. Also, each section in ABFD should point to a list - of bfd_link_order structures which list all the input sections for - the output section. */ - -boolean -NAME(aout,final_link) (abfd, info, callback) - bfd *abfd; - struct bfd_link_info *info; - void (*callback) PARAMS ((bfd *, file_ptr *, file_ptr *, file_ptr *)); -{ - struct aout_final_link_info aout_info; - boolean includes_hash_initialized = false; - register bfd *sub; - bfd_size_type trsize, drsize; - size_t max_contents_size; - size_t max_relocs_size; - size_t max_sym_count; - bfd_size_type text_size; - file_ptr text_end; - register struct bfd_link_order *p; - asection *o; - boolean have_link_order_relocs; - - if (info->shared) - abfd->flags |= DYNAMIC; - - aout_info.info = info; - aout_info.output_bfd = abfd; - aout_info.contents = NULL; - aout_info.relocs = NULL; - aout_info.symbol_map = NULL; - aout_info.output_syms = NULL; - - if (! bfd_hash_table_init_n (&aout_info.includes.root, - aout_link_includes_newfunc, - 251)) - goto error_return; - includes_hash_initialized = true; - - /* Figure out the largest section size. Also, if generating - relocateable output, count the relocs. */ - trsize = 0; - drsize = 0; - max_contents_size = 0; - max_relocs_size = 0; - max_sym_count = 0; - for (sub = info->input_bfds; sub != NULL; sub = sub->link_next) - { - size_t sz; - - if (info->relocateable) - { - if (bfd_get_flavour (sub) == bfd_target_aout_flavour) - { - trsize += exec_hdr (sub)->a_trsize; - drsize += exec_hdr (sub)->a_drsize; - } - else - { - /* FIXME: We need to identify the .text and .data sections - and call get_reloc_upper_bound and canonicalize_reloc to - work out the number of relocs needed, and then multiply - by the reloc size. */ - (*_bfd_error_handler) - (_("%s: relocateable link from %s to %s not supported"), - bfd_get_filename (abfd), - sub->xvec->name, abfd->xvec->name); - bfd_set_error (bfd_error_invalid_operation); - goto error_return; - } - } - - if (bfd_get_flavour (sub) == bfd_target_aout_flavour) - { - sz = bfd_section_size (sub, obj_textsec (sub)); - if (sz > max_contents_size) - max_contents_size = sz; - sz = bfd_section_size (sub, obj_datasec (sub)); - if (sz > max_contents_size) - max_contents_size = sz; - - sz = exec_hdr (sub)->a_trsize; - if (sz > max_relocs_size) - max_relocs_size = sz; - sz = exec_hdr (sub)->a_drsize; - if (sz > max_relocs_size) - max_relocs_size = sz; - - sz = obj_aout_external_sym_count (sub); - if (sz > max_sym_count) - max_sym_count = sz; - } - } - - if (info->relocateable) - { - if (obj_textsec (abfd) != (asection *) NULL) - trsize += (_bfd_count_link_order_relocs (obj_textsec (abfd) - ->link_order_head) - * obj_reloc_entry_size (abfd)); - if (obj_datasec (abfd) != (asection *) NULL) - drsize += (_bfd_count_link_order_relocs (obj_datasec (abfd) - ->link_order_head) - * obj_reloc_entry_size (abfd)); - } - - exec_hdr (abfd)->a_trsize = trsize; - exec_hdr (abfd)->a_drsize = drsize; - - exec_hdr (abfd)->a_entry = bfd_get_start_address (abfd); - - /* Adjust the section sizes and vmas according to the magic number. - This sets a_text, a_data and a_bss in the exec_hdr and sets the - filepos for each section. */ - if (! NAME(aout,adjust_sizes_and_vmas) (abfd, &text_size, &text_end)) - goto error_return; - - /* The relocation and symbol file positions differ among a.out - targets. We are passed a callback routine from the backend - specific code to handle this. - FIXME: At this point we do not know how much space the symbol - table will require. This will not work for any (nonstandard) - a.out target that needs to know the symbol table size before it - can compute the relocation file positions. This may or may not - be the case for the hp300hpux target, for example. */ - (*callback) (abfd, &aout_info.treloff, &aout_info.dreloff, - &aout_info.symoff); - obj_textsec (abfd)->rel_filepos = aout_info.treloff; - obj_datasec (abfd)->rel_filepos = aout_info.dreloff; - obj_sym_filepos (abfd) = aout_info.symoff; - - /* We keep a count of the symbols as we output them. */ - obj_aout_external_sym_count (abfd) = 0; - - /* We accumulate the string table as we write out the symbols. */ - aout_info.strtab = _bfd_stringtab_init (); - if (aout_info.strtab == NULL) - goto error_return; - - /* Allocate buffers to hold section contents and relocs. */ - aout_info.contents = (bfd_byte *) bfd_malloc (max_contents_size); - aout_info.relocs = (PTR) bfd_malloc (max_relocs_size); - aout_info.symbol_map = (int *) bfd_malloc (max_sym_count * sizeof (int *)); - aout_info.output_syms = ((struct external_nlist *) - bfd_malloc ((max_sym_count + 1) - * sizeof (struct external_nlist))); - if ((aout_info.contents == NULL && max_contents_size != 0) - || (aout_info.relocs == NULL && max_relocs_size != 0) - || (aout_info.symbol_map == NULL && max_sym_count != 0) - || aout_info.output_syms == NULL) - goto error_return; - - /* If we have a symbol named __DYNAMIC, force it out now. This is - required by SunOS. Doing this here rather than in sunos.c is a - hack, but it's easier than exporting everything which would be - needed. */ - { - struct aout_link_hash_entry *h; - - h = aout_link_hash_lookup (aout_hash_table (info), "__DYNAMIC", - false, false, false); - if (h != NULL) - aout_link_write_other_symbol (h, &aout_info); - } - - /* The most time efficient way to do the link would be to read all - the input object files into memory and then sort out the - information into the output file. Unfortunately, that will - probably use too much memory. Another method would be to step - through everything that composes the text section and write it - out, and then everything that composes the data section and write - it out, and then write out the relocs, and then write out the - symbols. Unfortunately, that requires reading stuff from each - input file several times, and we will not be able to keep all the - input files open simultaneously, and reopening them will be slow. - - What we do is basically process one input file at a time. We do - everything we need to do with an input file once--copy over the - section contents, handle the relocation information, and write - out the symbols--and then we throw away the information we read - from it. This approach requires a lot of lseeks of the output - file, which is unfortunate but still faster than reopening a lot - of files. - - We use the output_has_begun field of the input BFDs to see - whether we have already handled it. */ - for (sub = info->input_bfds; sub != (bfd *) NULL; sub = sub->link_next) - sub->output_has_begun = false; - - /* 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. */ - 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->linker_mark = true; - } - } - - have_link_order_relocs = false; - for (o = abfd->sections; o != (asection *) NULL; o = o->next) - { - for (p = o->link_order_head; - p != (struct bfd_link_order *) NULL; - p = p->next) - { - if (p->type == bfd_indirect_link_order - && (bfd_get_flavour (p->u.indirect.section->owner) - == bfd_target_aout_flavour)) - { - bfd *input_bfd; - - input_bfd = p->u.indirect.section->owner; - if (! input_bfd->output_has_begun) - { - if (! aout_link_input_bfd (&aout_info, input_bfd)) - goto error_return; - input_bfd->output_has_begun = true; - } - } - else if (p->type == bfd_section_reloc_link_order - || p->type == bfd_symbol_reloc_link_order) - { - /* These are handled below. */ - have_link_order_relocs = true; - } - else - { - if (! _bfd_default_link_order (abfd, info, o, p)) - goto error_return; - } - } - } - - /* Write out any symbols that we have not already written out. */ - aout_link_hash_traverse (aout_hash_table (info), - aout_link_write_other_symbol, - (PTR) &aout_info); - - /* Now handle any relocs we were asked to create by the linker. - These did not come from any input file. We must do these after - we have written out all the symbols, so that we know the symbol - indices to use. */ - if (have_link_order_relocs) - { - for (o = abfd->sections; o != (asection *) NULL; o = o->next) - { - for (p = o->link_order_head; - p != (struct bfd_link_order *) NULL; - p = p->next) - { - if (p->type == bfd_section_reloc_link_order - || p->type == bfd_symbol_reloc_link_order) - { - if (! aout_link_reloc_link_order (&aout_info, o, p)) - goto error_return; - } - } - } - } - - if (aout_info.contents != NULL) - { - free (aout_info.contents); - aout_info.contents = NULL; - } - if (aout_info.relocs != NULL) - { - free (aout_info.relocs); - aout_info.relocs = NULL; - } - if (aout_info.symbol_map != NULL) - { - free (aout_info.symbol_map); - aout_info.symbol_map = NULL; - } - if (aout_info.output_syms != NULL) - { - free (aout_info.output_syms); - aout_info.output_syms = NULL; - } - if (includes_hash_initialized) - { - bfd_hash_table_free (&aout_info.includes.root); - includes_hash_initialized = false; - } - - /* Finish up any dynamic linking we may be doing. */ - if (aout_backend_info (abfd)->finish_dynamic_link != NULL) - { - if (! (*aout_backend_info (abfd)->finish_dynamic_link) (abfd, info)) - goto error_return; - } - - /* Update the header information. */ - abfd->symcount = obj_aout_external_sym_count (abfd); - exec_hdr (abfd)->a_syms = abfd->symcount * EXTERNAL_NLIST_SIZE; - obj_str_filepos (abfd) = obj_sym_filepos (abfd) + exec_hdr (abfd)->a_syms; - obj_textsec (abfd)->reloc_count = - exec_hdr (abfd)->a_trsize / obj_reloc_entry_size (abfd); - obj_datasec (abfd)->reloc_count = - exec_hdr (abfd)->a_drsize / obj_reloc_entry_size (abfd); - - /* Write out the string table, unless there are no symbols. */ - if (abfd->symcount > 0) - { - if (bfd_seek (abfd, obj_str_filepos (abfd), SEEK_SET) != 0 - || ! emit_stringtab (abfd, aout_info.strtab)) - goto error_return; - } - else if (obj_textsec (abfd)->reloc_count == 0 - && obj_datasec (abfd)->reloc_count == 0) - { - bfd_byte b; - - b = 0; - if (bfd_seek (abfd, - (obj_datasec (abfd)->filepos - + exec_hdr (abfd)->a_data - - 1), - SEEK_SET) != 0 - || bfd_write (&b, 1, 1, abfd) != 1) - goto error_return; - } - - return true; - - error_return: - if (aout_info.contents != NULL) - free (aout_info.contents); - if (aout_info.relocs != NULL) - free (aout_info.relocs); - if (aout_info.symbol_map != NULL) - free (aout_info.symbol_map); - if (aout_info.output_syms != NULL) - free (aout_info.output_syms); - if (includes_hash_initialized) - bfd_hash_table_free (&aout_info.includes.root); - return false; -} - -/* Link an a.out input BFD into the output file. */ - -static boolean -aout_link_input_bfd (finfo, input_bfd) - struct aout_final_link_info *finfo; - bfd *input_bfd; -{ - bfd_size_type sym_count; - - BFD_ASSERT (bfd_get_format (input_bfd) == bfd_object); - - /* If this is a dynamic object, it may need special handling. */ - if ((input_bfd->flags & DYNAMIC) != 0 - && aout_backend_info (input_bfd)->link_dynamic_object != NULL) - { - return ((*aout_backend_info (input_bfd)->link_dynamic_object) - (finfo->info, input_bfd)); - } - - /* Get the symbols. We probably have them already, unless - finfo->info->keep_memory is false. */ - if (! aout_get_external_symbols (input_bfd)) - return false; - - sym_count = obj_aout_external_sym_count (input_bfd); - - /* Write out the symbols and get a map of the new indices. The map - is placed into finfo->symbol_map. */ - if (! aout_link_write_symbols (finfo, input_bfd)) - return false; - - /* Relocate and write out the sections. These functions use the - symbol map created by aout_link_write_symbols. The linker_mark - field will be set if these sections are to be included in the - link, which will normally be the case. */ - if (obj_textsec (input_bfd)->linker_mark) - { - if (! aout_link_input_section (finfo, input_bfd, - obj_textsec (input_bfd), - &finfo->treloff, - exec_hdr (input_bfd)->a_trsize)) - return false; - } - if (obj_datasec (input_bfd)->linker_mark) - { - if (! aout_link_input_section (finfo, input_bfd, - obj_datasec (input_bfd), - &finfo->dreloff, - exec_hdr (input_bfd)->a_drsize)) - return false; - } - - /* If we are not keeping memory, we don't need the symbols any - longer. We still need them if we are keeping memory, because the - strings in the hash table point into them. */ - if (! finfo->info->keep_memory) - { - if (! aout_link_free_symbols (input_bfd)) - return false; - } - - return true; -} - -/* Adjust and write out the symbols for an a.out file. Set the new - symbol indices into a symbol_map. */ - -static boolean -aout_link_write_symbols (finfo, input_bfd) - struct aout_final_link_info *finfo; - bfd *input_bfd; -{ - bfd *output_bfd; - bfd_size_type sym_count; - char *strings; - enum bfd_link_strip strip; - enum bfd_link_discard discard; - struct external_nlist *outsym; - bfd_size_type strtab_index; - register struct external_nlist *sym; - struct external_nlist *sym_end; - struct aout_link_hash_entry **sym_hash; - int *symbol_map; - boolean pass; - boolean skip_next; - - output_bfd = finfo->output_bfd; - sym_count = obj_aout_external_sym_count (input_bfd); - strings = obj_aout_external_strings (input_bfd); - strip = finfo->info->strip; - discard = finfo->info->discard; - outsym = finfo->output_syms; - - /* First write out a symbol for this object file, unless we are - discarding such symbols. */ - if (strip != strip_all - && (strip != strip_some - || bfd_hash_lookup (finfo->info->keep_hash, input_bfd->filename, - false, false) != NULL) - && discard != discard_all) - { - bfd_h_put_8 (output_bfd, N_TEXT, outsym->e_type); - bfd_h_put_8 (output_bfd, 0, outsym->e_other); - bfd_h_put_16 (output_bfd, (bfd_vma) 0, outsym->e_desc); - strtab_index = add_to_stringtab (output_bfd, finfo->strtab, - input_bfd->filename, false); - if (strtab_index == (bfd_size_type) -1) - return false; - PUT_WORD (output_bfd, strtab_index, outsym->e_strx); - PUT_WORD (output_bfd, - (bfd_get_section_vma (output_bfd, - obj_textsec (input_bfd)->output_section) - + obj_textsec (input_bfd)->output_offset), - outsym->e_value); - ++obj_aout_external_sym_count (output_bfd); - ++outsym; - } - - pass = false; - skip_next = false; - sym = obj_aout_external_syms (input_bfd); - sym_end = sym + sym_count; - sym_hash = obj_aout_sym_hashes (input_bfd); - symbol_map = finfo->symbol_map; - memset (symbol_map, 0, sym_count * sizeof *symbol_map); - for (; sym < sym_end; sym++, sym_hash++, symbol_map++) - { - const char *name; - int type; - struct aout_link_hash_entry *h; - boolean skip; - asection *symsec; - bfd_vma val = 0; - boolean copy; - - /* We set *symbol_map to 0 above for all symbols. If it has - already been set to -1 for this symbol, it means that we are - discarding it because it appears in a duplicate header file. - See the N_BINCL code below. */ - if (*symbol_map == -1) - continue; - - /* Initialize *symbol_map to -1, which means that the symbol was - not copied into the output file. We will change it later if - we do copy the symbol over. */ - *symbol_map = -1; - - type = bfd_h_get_8 (input_bfd, sym->e_type); - name = strings + GET_WORD (input_bfd, sym->e_strx); - - h = NULL; - - if (pass) - { - /* Pass this symbol through. It is the target of an - indirect or warning symbol. */ - val = GET_WORD (input_bfd, sym->e_value); - pass = false; - } - else if (skip_next) - { - /* Skip this symbol, which is the target of an indirect - symbol that we have changed to no longer be an indirect - symbol. */ - skip_next = false; - continue; - } - else - { - struct aout_link_hash_entry *hresolve; - - /* We have saved the hash table entry for this symbol, if - there is one. Note that we could just look it up again - in the hash table, provided we first check that it is an - external symbol. */ - h = *sym_hash; - - /* Use the name from the hash table, in case the symbol was - wrapped. */ - if (h != NULL) - name = h->root.root.string; - - /* If this is an indirect or warning symbol, then change - hresolve to the base symbol. We also change *sym_hash so - that the relocation routines relocate against the real - symbol. */ - hresolve = h; - if (h != (struct aout_link_hash_entry *) NULL - && (h->root.type == bfd_link_hash_indirect - || h->root.type == bfd_link_hash_warning)) - { - hresolve = (struct aout_link_hash_entry *) h->root.u.i.link; - while (hresolve->root.type == bfd_link_hash_indirect - || hresolve->root.type == bfd_link_hash_warning) - hresolve = ((struct aout_link_hash_entry *) - hresolve->root.u.i.link); - *sym_hash = hresolve; - } - - /* If the symbol has already been written out, skip it. */ - if (h != (struct aout_link_hash_entry *) NULL - && h->root.type != bfd_link_hash_warning - && h->written) - { - if ((type & N_TYPE) == N_INDR - || type == N_WARNING) - skip_next = true; - *symbol_map = h->indx; - continue; - } - - /* See if we are stripping this symbol. */ - skip = false; - switch (strip) - { - case strip_none: - break; - case strip_debugger: - if ((type & N_STAB) != 0) - skip = true; - break; - case strip_some: - if (bfd_hash_lookup (finfo->info->keep_hash, name, false, false) - == NULL) - skip = true; - break; - case strip_all: - skip = true; - break; - } - if (skip) - { - if (h != (struct aout_link_hash_entry *) NULL) - h->written = true; - continue; - } - - /* Get the value of the symbol. */ - if ((type & N_TYPE) == N_TEXT - || type == N_WEAKT) - symsec = obj_textsec (input_bfd); - else if ((type & N_TYPE) == N_DATA - || type == N_WEAKD) - symsec = obj_datasec (input_bfd); - else if ((type & N_TYPE) == N_BSS - || type == N_WEAKB) - symsec = obj_bsssec (input_bfd); - else if ((type & N_TYPE) == N_ABS - || type == N_WEAKA) - symsec = bfd_abs_section_ptr; - else if (((type & N_TYPE) == N_INDR - && (hresolve == (struct aout_link_hash_entry *) NULL - || (hresolve->root.type != bfd_link_hash_defined - && hresolve->root.type != bfd_link_hash_defweak - && hresolve->root.type != bfd_link_hash_common))) - || type == N_WARNING) - { - /* Pass the next symbol through unchanged. The - condition above for indirect symbols is so that if - the indirect symbol was defined, we output it with - the correct definition so the debugger will - understand it. */ - pass = true; - val = GET_WORD (input_bfd, sym->e_value); - symsec = NULL; - } - else if ((type & N_STAB) != 0) - { - val = GET_WORD (input_bfd, sym->e_value); - symsec = NULL; - } - else - { - /* If we get here with an indirect symbol, it means that - we are outputting it with a real definition. In such - a case we do not want to output the next symbol, - which is the target of the indirection. */ - if ((type & N_TYPE) == N_INDR) - skip_next = true; - - symsec = NULL; - - /* We need to get the value from the hash table. We use - hresolve so that if we have defined an indirect - symbol we output the final definition. */ - if (h == (struct aout_link_hash_entry *) NULL) - { - switch (type & N_TYPE) - { - case N_SETT: - symsec = obj_textsec (input_bfd); - break; - case N_SETD: - symsec = obj_datasec (input_bfd); - break; - case N_SETB: - symsec = obj_bsssec (input_bfd); - break; - case N_SETA: - symsec = bfd_abs_section_ptr; - break; - default: - val = 0; - break; - } - } - else if (hresolve->root.type == bfd_link_hash_defined - || hresolve->root.type == bfd_link_hash_defweak) - { - asection *input_section; - asection *output_section; - - /* This case usually means a common symbol which was - turned into a defined symbol. */ - input_section = hresolve->root.u.def.section; - output_section = input_section->output_section; - BFD_ASSERT (bfd_is_abs_section (output_section) - || output_section->owner == output_bfd); - val = (hresolve->root.u.def.value - + bfd_get_section_vma (output_bfd, output_section) - + input_section->output_offset); - - /* Get the correct type based on the section. If - this is a constructed set, force it to be - globally visible. */ - if (type == N_SETT - || type == N_SETD - || type == N_SETB - || type == N_SETA) - type |= N_EXT; - - type &=~ N_TYPE; - - if (output_section == obj_textsec (output_bfd)) - type |= (hresolve->root.type == bfd_link_hash_defined - ? N_TEXT - : N_WEAKT); - else if (output_section == obj_datasec (output_bfd)) - type |= (hresolve->root.type == bfd_link_hash_defined - ? N_DATA - : N_WEAKD); - else if (output_section == obj_bsssec (output_bfd)) - type |= (hresolve->root.type == bfd_link_hash_defined - ? N_BSS - : N_WEAKB); - else - type |= (hresolve->root.type == bfd_link_hash_defined - ? N_ABS - : N_WEAKA); - } - else if (hresolve->root.type == bfd_link_hash_common) - val = hresolve->root.u.c.size; - else if (hresolve->root.type == bfd_link_hash_undefweak) - { - val = 0; - type = N_WEAKU; - } - else - val = 0; - } - if (symsec != (asection *) NULL) - val = (symsec->output_section->vma - + symsec->output_offset - + (GET_WORD (input_bfd, sym->e_value) - - symsec->vma)); - - /* If this is a global symbol set the written flag, and if - it is a local symbol see if we should discard it. */ - if (h != (struct aout_link_hash_entry *) NULL) - { - h->written = true; - h->indx = obj_aout_external_sym_count (output_bfd); - } - else if ((type & N_TYPE) != N_SETT - && (type & N_TYPE) != N_SETD - && (type & N_TYPE) != N_SETB - && (type & N_TYPE) != N_SETA) - { - switch (discard) - { - case discard_none: - case discard_sec_merge: - break; - case discard_l: - if ((type & N_STAB) == 0 - && bfd_is_local_label_name (input_bfd, name)) - skip = true; - break; - case discard_all: - skip = true; - break; - } - if (skip) - { - pass = false; - continue; - } - } - - /* An N_BINCL symbol indicates the start of the stabs - entries for a header file. We need to scan ahead to the - next N_EINCL symbol, ignoring nesting, adding up all the - characters in the symbol names, not including the file - numbers in types (the first number after an open - parenthesis). */ - if (type == N_BINCL) - { - struct external_nlist *incl_sym; - int nest; - struct aout_link_includes_entry *incl_entry; - struct aout_link_includes_totals *t; - - val = 0; - nest = 0; - for (incl_sym = sym + 1; incl_sym < sym_end; incl_sym++) - { - int incl_type; - - incl_type = bfd_h_get_8 (input_bfd, incl_sym->e_type); - if (incl_type == N_EINCL) - { - if (nest == 0) - break; - --nest; - } - else if (incl_type == N_BINCL) - ++nest; - else if (nest == 0) - { - const char *s; - - s = strings + GET_WORD (input_bfd, incl_sym->e_strx); - for (; *s != '\0'; s++) - { - val += *s; - if (*s == '(') - { - /* Skip the file number. */ - ++s; - while (isdigit ((unsigned char) *s)) - ++s; - --s; - } - } - } - } - - /* If we have already included a header file with the - same value, then replace this one with an N_EXCL - symbol. */ - copy = ! finfo->info->keep_memory; - incl_entry = aout_link_includes_lookup (&finfo->includes, - name, true, copy); - if (incl_entry == NULL) - return false; - for (t = incl_entry->totals; t != NULL; t = t->next) - if (t->total == val) - break; - if (t == NULL) - { - /* This is the first time we have seen this header - file with this set of stabs strings. */ - t = ((struct aout_link_includes_totals *) - bfd_hash_allocate (&finfo->includes.root, - sizeof *t)); - if (t == NULL) - return false; - t->total = val; - t->next = incl_entry->totals; - incl_entry->totals = t; - } - else - { - int *incl_map; - - /* This is a duplicate header file. We must change - it to be an N_EXCL entry, and mark all the - included symbols to prevent outputting them. */ - type = N_EXCL; - - nest = 0; - for (incl_sym = sym + 1, incl_map = symbol_map + 1; - incl_sym < sym_end; - incl_sym++, incl_map++) - { - int incl_type; - - incl_type = bfd_h_get_8 (input_bfd, incl_sym->e_type); - if (incl_type == N_EINCL) - { - if (nest == 0) - { - *incl_map = -1; - break; - } - --nest; - } - else if (incl_type == N_BINCL) - ++nest; - else if (nest == 0) - *incl_map = -1; - } - } - } - } - - /* Copy this symbol into the list of symbols we are going to - write out. */ - bfd_h_put_8 (output_bfd, type, outsym->e_type); - bfd_h_put_8 (output_bfd, bfd_h_get_8 (input_bfd, sym->e_other), - outsym->e_other); - bfd_h_put_16 (output_bfd, bfd_h_get_16 (input_bfd, sym->e_desc), - outsym->e_desc); - copy = false; - if (! finfo->info->keep_memory) - { - /* name points into a string table which we are going to - free. If there is a hash table entry, use that string. - Otherwise, copy name into memory. */ - if (h != (struct aout_link_hash_entry *) NULL) - name = h->root.root.string; - else - copy = true; - } - strtab_index = add_to_stringtab (output_bfd, finfo->strtab, - name, copy); - if (strtab_index == (bfd_size_type) -1) - return false; - PUT_WORD (output_bfd, strtab_index, outsym->e_strx); - PUT_WORD (output_bfd, val, outsym->e_value); - *symbol_map = obj_aout_external_sym_count (output_bfd); - ++obj_aout_external_sym_count (output_bfd); - ++outsym; - } - - /* Write out the output symbols we have just constructed. */ - if (outsym > finfo->output_syms) - { - bfd_size_type outsym_count; - - if (bfd_seek (output_bfd, finfo->symoff, SEEK_SET) != 0) - return false; - outsym_count = outsym - finfo->output_syms; - if (bfd_write ((PTR) finfo->output_syms, - (bfd_size_type) EXTERNAL_NLIST_SIZE, - (bfd_size_type) outsym_count, output_bfd) - != outsym_count * EXTERNAL_NLIST_SIZE) - return false; - finfo->symoff += outsym_count * EXTERNAL_NLIST_SIZE; - } - - return true; -} - -/* Write out a symbol that was not associated with an a.out input - object. */ - -static boolean -aout_link_write_other_symbol (h, data) - struct aout_link_hash_entry *h; - PTR data; -{ - struct aout_final_link_info *finfo = (struct aout_final_link_info *) data; - bfd *output_bfd; - int type; - bfd_vma val; - struct external_nlist outsym; - bfd_size_type indx; - - output_bfd = finfo->output_bfd; - - if (aout_backend_info (output_bfd)->write_dynamic_symbol != NULL) - { - if (! ((*aout_backend_info (output_bfd)->write_dynamic_symbol) - (output_bfd, finfo->info, h))) - { - /* FIXME: No way to handle errors. */ - abort (); - } - } - - if (h->written) - return true; - - h->written = true; - - /* An indx of -2 means the symbol must be written. */ - 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))) - return true; - - switch (h->root.type) - { - default: - abort (); - /* Avoid variable not initialized warnings. */ - return true; - case bfd_link_hash_new: - /* This can happen for set symbols when sets are not being - built. */ - return true; - case bfd_link_hash_undefined: - type = N_UNDF | N_EXT; - val = 0; - break; - case bfd_link_hash_defined: - case bfd_link_hash_defweak: - { - asection *sec; - - sec = h->root.u.def.section->output_section; - BFD_ASSERT (bfd_is_abs_section (sec) - || sec->owner == output_bfd); - if (sec == obj_textsec (output_bfd)) - type = h->root.type == bfd_link_hash_defined ? N_TEXT : N_WEAKT; - else if (sec == obj_datasec (output_bfd)) - type = h->root.type == bfd_link_hash_defined ? N_DATA : N_WEAKD; - else if (sec == obj_bsssec (output_bfd)) - type = h->root.type == bfd_link_hash_defined ? N_BSS : N_WEAKB; - else - type = h->root.type == bfd_link_hash_defined ? N_ABS : N_WEAKA; - type |= N_EXT; - val = (h->root.u.def.value - + sec->vma - + h->root.u.def.section->output_offset); - } - break; - case bfd_link_hash_common: - type = N_UNDF | N_EXT; - val = h->root.u.c.size; - break; - case bfd_link_hash_undefweak: - type = N_WEAKU; - val = 0; - case bfd_link_hash_indirect: - case bfd_link_hash_warning: - /* FIXME: Ignore these for now. The circumstances under which - they should be written out are not clear to me. */ - return true; - } - - bfd_h_put_8 (output_bfd, type, outsym.e_type); - bfd_h_put_8 (output_bfd, 0, outsym.e_other); - bfd_h_put_16 (output_bfd, 0, outsym.e_desc); - indx = add_to_stringtab (output_bfd, finfo->strtab, h->root.root.string, - false); - if (indx == (bfd_size_type) -1) - { - /* FIXME: No way to handle errors. */ - abort (); - } - PUT_WORD (output_bfd, indx, outsym.e_strx); - PUT_WORD (output_bfd, val, outsym.e_value); - - if (bfd_seek (output_bfd, finfo->symoff, SEEK_SET) != 0 - || bfd_write ((PTR) &outsym, (bfd_size_type) EXTERNAL_NLIST_SIZE, - (bfd_size_type) 1, output_bfd) != EXTERNAL_NLIST_SIZE) - { - /* FIXME: No way to handle errors. */ - abort (); - } - - finfo->symoff += EXTERNAL_NLIST_SIZE; - h->indx = obj_aout_external_sym_count (output_bfd); - ++obj_aout_external_sym_count (output_bfd); - - return true; -} - -/* Link an a.out section into the output file. */ - -static boolean -aout_link_input_section (finfo, input_bfd, input_section, reloff_ptr, - rel_size) - struct aout_final_link_info *finfo; - bfd *input_bfd; - asection *input_section; - file_ptr *reloff_ptr; - bfd_size_type rel_size; -{ - bfd_size_type input_size; - PTR relocs; - - /* Get the section contents. */ - input_size = bfd_section_size (input_bfd, input_section); - if (! bfd_get_section_contents (input_bfd, input_section, - (PTR) finfo->contents, - (file_ptr) 0, input_size)) - return false; - - /* Read in the relocs if we haven't already done it. */ - if (aout_section_data (input_section) != NULL - && aout_section_data (input_section)->relocs != NULL) - relocs = aout_section_data (input_section)->relocs; - else - { - relocs = finfo->relocs; - if (rel_size > 0) - { - if (bfd_seek (input_bfd, input_section->rel_filepos, SEEK_SET) != 0 - || bfd_read (relocs, 1, rel_size, input_bfd) != rel_size) - return false; - } - } - - /* Relocate the section contents. */ - if (obj_reloc_entry_size (input_bfd) == RELOC_STD_SIZE) - { - if (! aout_link_input_section_std (finfo, input_bfd, input_section, - (struct reloc_std_external *) relocs, - rel_size, finfo->contents)) - return false; - } - else - { - if (! aout_link_input_section_ext (finfo, input_bfd, input_section, - (struct reloc_ext_external *) relocs, - rel_size, finfo->contents)) - return false; - } - - /* Write out the section contents. */ - if (! bfd_set_section_contents (finfo->output_bfd, - input_section->output_section, - (PTR) finfo->contents, - input_section->output_offset, - input_size)) - return false; - - /* If we are producing relocateable output, the relocs were - modified, and we now write them out. */ - if (finfo->info->relocateable && rel_size > 0) - { - if (bfd_seek (finfo->output_bfd, *reloff_ptr, SEEK_SET) != 0) - return false; - if (bfd_write (relocs, (bfd_size_type) 1, rel_size, finfo->output_bfd) - != rel_size) - return false; - *reloff_ptr += rel_size; - - /* Assert that the relocs have not run into the symbols, and - that if these are the text relocs they have not run into the - data relocs. */ - BFD_ASSERT (*reloff_ptr <= obj_sym_filepos (finfo->output_bfd) - && (reloff_ptr != &finfo->treloff - || (*reloff_ptr - <= obj_datasec (finfo->output_bfd)->rel_filepos))); - } - - return true; -} - -/* Get the section corresponding to a reloc index. */ - -static INLINE asection * -aout_reloc_index_to_section (abfd, indx) - bfd *abfd; - int indx; -{ - switch (indx & N_TYPE) - { - case N_TEXT: - return obj_textsec (abfd); - case N_DATA: - return obj_datasec (abfd); - case N_BSS: - return obj_bsssec (abfd); - case N_ABS: - case N_UNDF: - return bfd_abs_section_ptr; - default: - abort (); - } - /*NOTREACHED*/ - return NULL; -} - -/* Relocate an a.out section using standard a.out relocs. */ - -static boolean -aout_link_input_section_std (finfo, input_bfd, input_section, relocs, - rel_size, contents) - struct aout_final_link_info *finfo; - bfd *input_bfd; - asection *input_section; - struct reloc_std_external *relocs; - bfd_size_type rel_size; - bfd_byte *contents; -{ - boolean (*check_dynamic_reloc) PARAMS ((struct bfd_link_info *, - bfd *, asection *, - struct aout_link_hash_entry *, - PTR, bfd_byte *, boolean *, - bfd_vma *)); - bfd *output_bfd; - boolean relocateable; - struct external_nlist *syms; - char *strings; - struct aout_link_hash_entry **sym_hashes; - int *symbol_map; - bfd_size_type reloc_count; - register struct reloc_std_external *rel; - struct reloc_std_external *rel_end; - - output_bfd = finfo->output_bfd; - check_dynamic_reloc = aout_backend_info (output_bfd)->check_dynamic_reloc; - - BFD_ASSERT (obj_reloc_entry_size (input_bfd) == RELOC_STD_SIZE); - BFD_ASSERT (input_bfd->xvec->header_byteorder - == output_bfd->xvec->header_byteorder); - - relocateable = finfo->info->relocateable; - syms = obj_aout_external_syms (input_bfd); - strings = obj_aout_external_strings (input_bfd); - sym_hashes = obj_aout_sym_hashes (input_bfd); - symbol_map = finfo->symbol_map; - - reloc_count = rel_size / RELOC_STD_SIZE; - rel = relocs; - rel_end = rel + reloc_count; - for (; rel < rel_end; rel++) - { - bfd_vma r_addr; - int r_index; - int r_extern; - int r_pcrel; - int r_baserel = 0; - reloc_howto_type *howto; - struct aout_link_hash_entry *h = NULL; - bfd_vma relocation; - bfd_reloc_status_type r; - - r_addr = GET_SWORD (input_bfd, rel->r_address); - -#ifdef MY_reloc_howto - howto = MY_reloc_howto(input_bfd, rel, r_index, r_extern, r_pcrel); -#else - { - int r_jmptable; - int r_relative; - int r_length; - unsigned int howto_idx; - - if (bfd_header_big_endian (input_bfd)) - { - r_index = ((rel->r_index[0] << 16) - | (rel->r_index[1] << 8) - | rel->r_index[2]); - r_extern = (0 != (rel->r_type[0] & RELOC_STD_BITS_EXTERN_BIG)); - r_pcrel = (0 != (rel->r_type[0] & RELOC_STD_BITS_PCREL_BIG)); - r_baserel = (0 != (rel->r_type[0] & RELOC_STD_BITS_BASEREL_BIG)); - r_jmptable= (0 != (rel->r_type[0] & RELOC_STD_BITS_JMPTABLE_BIG)); - r_relative= (0 != (rel->r_type[0] & RELOC_STD_BITS_RELATIVE_BIG)); - r_length = ((rel->r_type[0] & RELOC_STD_BITS_LENGTH_BIG) - >> RELOC_STD_BITS_LENGTH_SH_BIG); - } - else - { - r_index = ((rel->r_index[2] << 16) - | (rel->r_index[1] << 8) - | rel->r_index[0]); - r_extern = (0 != (rel->r_type[0] & RELOC_STD_BITS_EXTERN_LITTLE)); - r_pcrel = (0 != (rel->r_type[0] & RELOC_STD_BITS_PCREL_LITTLE)); - r_baserel = (0 != (rel->r_type[0] - & RELOC_STD_BITS_BASEREL_LITTLE)); - r_jmptable= (0 != (rel->r_type[0] - & RELOC_STD_BITS_JMPTABLE_LITTLE)); - r_relative= (0 != (rel->r_type[0] - & RELOC_STD_BITS_RELATIVE_LITTLE)); - r_length = ((rel->r_type[0] & RELOC_STD_BITS_LENGTH_LITTLE) - >> RELOC_STD_BITS_LENGTH_SH_LITTLE); - } - - howto_idx = (r_length + 4 * r_pcrel + 8 * r_baserel - + 16 * r_jmptable + 32 * r_relative); - BFD_ASSERT (howto_idx < TABLE_SIZE (howto_table_std)); - howto = howto_table_std + howto_idx; - } -#endif - - if (relocateable) - { - /* We are generating a relocateable output file, and must - modify the reloc accordingly. */ - if (r_extern) - { - /* If we know the symbol this relocation is against, - convert it into a relocation against a section. This - is what the native linker does. */ - h = sym_hashes[r_index]; - if (h != (struct aout_link_hash_entry *) NULL - && (h->root.type == bfd_link_hash_defined - || h->root.type == bfd_link_hash_defweak)) - { - asection *output_section; - - /* Change the r_extern value. */ - if (bfd_header_big_endian (output_bfd)) - rel->r_type[0] &=~ RELOC_STD_BITS_EXTERN_BIG; - else - rel->r_type[0] &=~ RELOC_STD_BITS_EXTERN_LITTLE; - - /* Compute a new r_index. */ - output_section = h->root.u.def.section->output_section; - if (output_section == obj_textsec (output_bfd)) - r_index = N_TEXT; - else if (output_section == obj_datasec (output_bfd)) - r_index = N_DATA; - else if (output_section == obj_bsssec (output_bfd)) - r_index = N_BSS; - else - r_index = N_ABS; - - /* Add the symbol value and the section VMA to the - addend stored in the contents. */ - relocation = (h->root.u.def.value - + output_section->vma - + h->root.u.def.section->output_offset); - } - else - { - /* We must change r_index according to the symbol - map. */ - r_index = symbol_map[r_index]; - - if (r_index == -1) - { - if (h != NULL) - { - /* We decided to strip this symbol, but it - turns out that we can't. Note that we - lose the other and desc information here. - I don't think that will ever matter for a - global symbol. */ - if (h->indx < 0) - { - h->indx = -2; - h->written = false; - if (! aout_link_write_other_symbol (h, - (PTR) finfo)) - return false; - } - r_index = h->indx; - } - else - { - const char *name; - - name = strings + GET_WORD (input_bfd, - syms[r_index].e_strx); - if (! ((*finfo->info->callbacks->unattached_reloc) - (finfo->info, name, input_bfd, input_section, - r_addr))) - return false; - r_index = 0; - } - } - - relocation = 0; - } - - /* Write out the new r_index value. */ - if (bfd_header_big_endian (output_bfd)) - { - rel->r_index[0] = r_index >> 16; - rel->r_index[1] = r_index >> 8; - rel->r_index[2] = r_index; - } - else - { - rel->r_index[2] = r_index >> 16; - rel->r_index[1] = r_index >> 8; - rel->r_index[0] = r_index; - } - } - else - { - asection *section; - - /* This is a relocation against a section. We must - adjust by the amount that the section moved. */ - section = aout_reloc_index_to_section (input_bfd, r_index); - relocation = (section->output_section->vma - + section->output_offset - - section->vma); - } - - /* Change the address of the relocation. */ - PUT_WORD (output_bfd, - r_addr + input_section->output_offset, - rel->r_address); - - /* Adjust a PC relative relocation by removing the reference - to the original address in the section and including the - reference to the new address. */ - if (r_pcrel) - relocation -= (input_section->output_section->vma - + input_section->output_offset - - input_section->vma); - -#ifdef MY_relocatable_reloc - MY_relocatable_reloc (howto, output_bfd, rel, relocation, r_addr); -#endif - - if (relocation == 0) - r = bfd_reloc_ok; - else - r = MY_relocate_contents (howto, - input_bfd, relocation, - contents + r_addr); - } - else - { - boolean hundef; - - /* We are generating an executable, and must do a full - relocation. */ - hundef = false; - - if (r_extern) - { - h = sym_hashes[r_index]; - - if (h != (struct aout_link_hash_entry *) NULL - && (h->root.type == bfd_link_hash_defined - || h->root.type == bfd_link_hash_defweak)) - { - relocation = (h->root.u.def.value - + h->root.u.def.section->output_section->vma - + h->root.u.def.section->output_offset); - } - else if (h != (struct aout_link_hash_entry *) NULL - && h->root.type == bfd_link_hash_undefweak) - relocation = 0; - else - { - hundef = true; - relocation = 0; - } - } - else - { - asection *section; - - section = aout_reloc_index_to_section (input_bfd, r_index); - relocation = (section->output_section->vma - + section->output_offset - - section->vma); - if (r_pcrel) - relocation += input_section->vma; - } - - if (check_dynamic_reloc != NULL) - { - boolean skip; - - if (! ((*check_dynamic_reloc) - (finfo->info, input_bfd, input_section, h, - (PTR) rel, contents, &skip, &relocation))) - return false; - if (skip) - continue; - } - - /* Now warn if a global symbol is undefined. We could not - do this earlier, because check_dynamic_reloc might want - to skip this reloc. */ - if (hundef && ! finfo->info->shared && ! r_baserel) - { - const char *name; - - if (h != NULL) - name = h->root.root.string; - else - name = strings + GET_WORD (input_bfd, syms[r_index].e_strx); - if (! ((*finfo->info->callbacks->undefined_symbol) - (finfo->info, name, input_bfd, input_section, - r_addr, true))) - return false; - } - - r = MY_final_link_relocate (howto, - input_bfd, input_section, - contents, r_addr, relocation, - (bfd_vma) 0); - } - - if (r != bfd_reloc_ok) - { - switch (r) - { - default: - case bfd_reloc_outofrange: - abort (); - case bfd_reloc_overflow: - { - const char *name; - - if (h != NULL) - name = h->root.root.string; - else if (r_extern) - name = strings + GET_WORD (input_bfd, - syms[r_index].e_strx); - else - { - asection *s; - - s = aout_reloc_index_to_section (input_bfd, r_index); - name = bfd_section_name (input_bfd, s); - } - if (! ((*finfo->info->callbacks->reloc_overflow) - (finfo->info, name, howto->name, - (bfd_vma) 0, input_bfd, input_section, r_addr))) - return false; - } - break; - } - } - } - - return true; -} - -/* Relocate an a.out section using extended a.out relocs. */ - -static boolean -aout_link_input_section_ext (finfo, input_bfd, input_section, relocs, - rel_size, contents) - struct aout_final_link_info *finfo; - bfd *input_bfd; - asection *input_section; - struct reloc_ext_external *relocs; - bfd_size_type rel_size; - bfd_byte *contents; -{ - boolean (*check_dynamic_reloc) PARAMS ((struct bfd_link_info *, - bfd *, asection *, - struct aout_link_hash_entry *, - PTR, bfd_byte *, boolean *, - bfd_vma *)); - bfd *output_bfd; - boolean relocateable; - struct external_nlist *syms; - char *strings; - struct aout_link_hash_entry **sym_hashes; - int *symbol_map; - bfd_size_type reloc_count; - register struct reloc_ext_external *rel; - struct reloc_ext_external *rel_end; - - output_bfd = finfo->output_bfd; - check_dynamic_reloc = aout_backend_info (output_bfd)->check_dynamic_reloc; - - BFD_ASSERT (obj_reloc_entry_size (input_bfd) == RELOC_EXT_SIZE); - BFD_ASSERT (input_bfd->xvec->header_byteorder - == output_bfd->xvec->header_byteorder); - - relocateable = finfo->info->relocateable; - syms = obj_aout_external_syms (input_bfd); - strings = obj_aout_external_strings (input_bfd); - sym_hashes = obj_aout_sym_hashes (input_bfd); - symbol_map = finfo->symbol_map; - - reloc_count = rel_size / RELOC_EXT_SIZE; - rel = relocs; - rel_end = rel + reloc_count; - for (; rel < rel_end; rel++) - { - bfd_vma r_addr; - int r_index; - int r_extern; - unsigned int r_type; - bfd_vma r_addend; - struct aout_link_hash_entry *h = NULL; - asection *r_section = NULL; - bfd_vma relocation; - - r_addr = GET_SWORD (input_bfd, rel->r_address); - - if (bfd_header_big_endian (input_bfd)) - { - r_index = ((rel->r_index[0] << 16) - | (rel->r_index[1] << 8) - | rel->r_index[2]); - r_extern = (0 != (rel->r_type[0] & RELOC_EXT_BITS_EXTERN_BIG)); - r_type = ((rel->r_type[0] & RELOC_EXT_BITS_TYPE_BIG) - >> RELOC_EXT_BITS_TYPE_SH_BIG); - } - else - { - r_index = ((rel->r_index[2] << 16) - | (rel->r_index[1] << 8) - | rel->r_index[0]); - r_extern = (0 != (rel->r_type[0] & RELOC_EXT_BITS_EXTERN_LITTLE)); - r_type = ((rel->r_type[0] & RELOC_EXT_BITS_TYPE_LITTLE) - >> RELOC_EXT_BITS_TYPE_SH_LITTLE); - } - - r_addend = GET_SWORD (input_bfd, rel->r_addend); - - BFD_ASSERT (r_type < TABLE_SIZE (howto_table_ext)); - - if (relocateable) - { - /* We are generating a relocateable output file, and must - modify the reloc accordingly. */ - if (r_extern - || r_type == RELOC_BASE10 - || r_type == RELOC_BASE13 - || r_type == RELOC_BASE22) - { - /* If we know the symbol this relocation is against, - convert it into a relocation against a section. This - is what the native linker does. */ - if (r_type == RELOC_BASE10 - || r_type == RELOC_BASE13 - || r_type == RELOC_BASE22) - h = NULL; - else - h = sym_hashes[r_index]; - if (h != (struct aout_link_hash_entry *) NULL - && (h->root.type == bfd_link_hash_defined - || h->root.type == bfd_link_hash_defweak)) - { - asection *output_section; - - /* Change the r_extern value. */ - if (bfd_header_big_endian (output_bfd)) - rel->r_type[0] &=~ RELOC_EXT_BITS_EXTERN_BIG; - else - rel->r_type[0] &=~ RELOC_EXT_BITS_EXTERN_LITTLE; - - /* Compute a new r_index. */ - output_section = h->root.u.def.section->output_section; - if (output_section == obj_textsec (output_bfd)) - r_index = N_TEXT; - else if (output_section == obj_datasec (output_bfd)) - r_index = N_DATA; - else if (output_section == obj_bsssec (output_bfd)) - r_index = N_BSS; - else - r_index = N_ABS; - - /* Add the symbol value and the section VMA to the - addend. */ - relocation = (h->root.u.def.value - + output_section->vma - + h->root.u.def.section->output_offset); - - /* Now RELOCATION is the VMA of the final - destination. If this is a PC relative reloc, - then ADDEND is the negative of the source VMA. - We want to set ADDEND to the difference between - the destination VMA and the source VMA, which - means we must adjust RELOCATION by the change in - the source VMA. This is done below. */ - } - else - { - /* We must change r_index according to the symbol - map. */ - r_index = symbol_map[r_index]; - - if (r_index == -1) - { - if (h != NULL) - { - /* We decided to strip this symbol, but it - turns out that we can't. Note that we - lose the other and desc information here. - I don't think that will ever matter for a - global symbol. */ - if (h->indx < 0) - { - h->indx = -2; - h->written = false; - if (! aout_link_write_other_symbol (h, - (PTR) finfo)) - return false; - } - r_index = h->indx; - } - else - { - const char *name; - - name = strings + GET_WORD (input_bfd, - syms[r_index].e_strx); - if (! ((*finfo->info->callbacks->unattached_reloc) - (finfo->info, name, input_bfd, input_section, - r_addr))) - return false; - r_index = 0; - } - } - - relocation = 0; - - /* If this is a PC relative reloc, then the addend - is the negative of the source VMA. We must - adjust it by the change in the source VMA. This - is done below. */ - } - - /* Write out the new r_index value. */ - if (bfd_header_big_endian (output_bfd)) - { - rel->r_index[0] = r_index >> 16; - rel->r_index[1] = r_index >> 8; - rel->r_index[2] = r_index; - } - else - { - rel->r_index[2] = r_index >> 16; - rel->r_index[1] = r_index >> 8; - rel->r_index[0] = r_index; - } - } - else - { - /* This is a relocation against a section. We must - adjust by the amount that the section moved. */ - r_section = aout_reloc_index_to_section (input_bfd, r_index); - relocation = (r_section->output_section->vma - + r_section->output_offset - - r_section->vma); - - /* If this is a PC relative reloc, then the addend is - the difference in VMA between the destination and the - source. We have just adjusted for the change in VMA - of the destination, so we must also adjust by the - change in VMA of the source. This is done below. */ - } - - /* As described above, we must always adjust a PC relative - reloc by the change in VMA of the source. However, if - pcrel_offset is set, then the addend does not include the - location within the section, in which case we don't need - to adjust anything. */ - if (howto_table_ext[r_type].pc_relative - && ! howto_table_ext[r_type].pcrel_offset) - relocation -= (input_section->output_section->vma - + input_section->output_offset - - input_section->vma); - - /* Change the addend if necessary. */ - if (relocation != 0) - PUT_WORD (output_bfd, r_addend + relocation, rel->r_addend); - - /* Change the address of the relocation. */ - PUT_WORD (output_bfd, - r_addr + input_section->output_offset, - rel->r_address); - } - else - { - boolean hundef; - bfd_reloc_status_type r; - - /* We are generating an executable, and must do a full - relocation. */ - hundef = false; - - if (r_extern) - { - h = sym_hashes[r_index]; - - if (h != (struct aout_link_hash_entry *) NULL - && (h->root.type == bfd_link_hash_defined - || h->root.type == bfd_link_hash_defweak)) - { - relocation = (h->root.u.def.value - + h->root.u.def.section->output_section->vma - + h->root.u.def.section->output_offset); - } - else if (h != (struct aout_link_hash_entry *) NULL - && h->root.type == bfd_link_hash_undefweak) - relocation = 0; - else - { - hundef = true; - relocation = 0; - } - } - else if (r_type == RELOC_BASE10 - || r_type == RELOC_BASE13 - || r_type == RELOC_BASE22) - { - struct external_nlist *sym; - int type; - - /* For base relative relocs, r_index is always an index - into the symbol table, even if r_extern is 0. */ - sym = syms + r_index; - type = bfd_h_get_8 (input_bfd, sym->e_type); - if ((type & N_TYPE) == N_TEXT - || type == N_WEAKT) - r_section = obj_textsec (input_bfd); - else if ((type & N_TYPE) == N_DATA - || type == N_WEAKD) - r_section = obj_datasec (input_bfd); - else if ((type & N_TYPE) == N_BSS - || type == N_WEAKB) - r_section = obj_bsssec (input_bfd); - else if ((type & N_TYPE) == N_ABS - || type == N_WEAKA) - r_section = bfd_abs_section_ptr; - else - abort (); - relocation = (r_section->output_section->vma - + r_section->output_offset - + (GET_WORD (input_bfd, sym->e_value) - - r_section->vma)); - } - else - { - r_section = aout_reloc_index_to_section (input_bfd, r_index); - - /* If this is a PC relative reloc, then R_ADDEND is the - difference between the two vmas, or - old_dest_sec + old_dest_off - (old_src_sec + old_src_off) - where - old_dest_sec == section->vma - and - old_src_sec == input_section->vma - and - old_src_off == r_addr - - _bfd_final_link_relocate expects RELOCATION + - R_ADDEND to be the VMA of the destination minus - r_addr (the minus r_addr is because this relocation - is not pcrel_offset, which is a bit confusing and - should, perhaps, be changed), or - new_dest_sec - where - new_dest_sec == output_section->vma + output_offset - We arrange for this to happen by setting RELOCATION to - new_dest_sec + old_src_sec - old_dest_sec - - If this is not a PC relative reloc, then R_ADDEND is - simply the VMA of the destination, so we set - RELOCATION to the change in the destination VMA, or - new_dest_sec - old_dest_sec - */ - relocation = (r_section->output_section->vma - + r_section->output_offset - - r_section->vma); - if (howto_table_ext[r_type].pc_relative) - relocation += input_section->vma; - } - - if (check_dynamic_reloc != NULL) - { - boolean skip; - - if (! ((*check_dynamic_reloc) - (finfo->info, input_bfd, input_section, h, - (PTR) rel, contents, &skip, &relocation))) - return false; - if (skip) - continue; - } - - /* Now warn if a global symbol is undefined. We could not - do this earlier, because check_dynamic_reloc might want - to skip this reloc. */ - if (hundef - && ! finfo->info->shared - && r_type != RELOC_BASE10 - && r_type != RELOC_BASE13 - && r_type != RELOC_BASE22) - { - const char *name; - - if (h != NULL) - name = h->root.root.string; - else - name = strings + GET_WORD (input_bfd, syms[r_index].e_strx); - if (! ((*finfo->info->callbacks->undefined_symbol) - (finfo->info, name, input_bfd, input_section, - r_addr, true))) - return false; - } - - if (r_type != RELOC_SPARC_REV32) - r = MY_final_link_relocate (howto_table_ext + r_type, - input_bfd, input_section, - contents, r_addr, relocation, - r_addend); - else - { - bfd_vma x; - - x = bfd_get_32 (input_bfd, contents + r_addr); - x = x + relocation + r_addend; - bfd_putl32 (/*input_bfd,*/ x, contents + r_addr); - r = bfd_reloc_ok; - } - - if (r != bfd_reloc_ok) - { - switch (r) - { - default: - case bfd_reloc_outofrange: - abort (); - case bfd_reloc_overflow: - { - const char *name; - - if (h != NULL) - name = h->root.root.string; - else if (r_extern - || r_type == RELOC_BASE10 - || r_type == RELOC_BASE13 - || r_type == RELOC_BASE22) - name = strings + GET_WORD (input_bfd, - syms[r_index].e_strx); - else - { - asection *s; - - s = aout_reloc_index_to_section (input_bfd, r_index); - name = bfd_section_name (input_bfd, s); - } - if (! ((*finfo->info->callbacks->reloc_overflow) - (finfo->info, name, howto_table_ext[r_type].name, - r_addend, input_bfd, input_section, r_addr))) - return false; - } - break; - } - } - } - } - - return true; -} - -/* Handle a link order which is supposed to generate a reloc. */ - -static boolean -aout_link_reloc_link_order (finfo, o, p) - struct aout_final_link_info *finfo; - asection *o; - struct bfd_link_order *p; -{ - struct bfd_link_order_reloc *pr; - int r_index; - int r_extern; - reloc_howto_type *howto; - file_ptr *reloff_ptr = NULL; - struct reloc_std_external srel; - struct reloc_ext_external erel; - PTR rel_ptr; - - pr = p->u.reloc.p; - - if (p->type == bfd_section_reloc_link_order) - { - r_extern = 0; - if (bfd_is_abs_section (pr->u.section)) - r_index = N_ABS | N_EXT; - else - { - BFD_ASSERT (pr->u.section->owner == finfo->output_bfd); - r_index = pr->u.section->target_index; - } - } - else - { - struct aout_link_hash_entry *h; - - BFD_ASSERT (p->type == bfd_symbol_reloc_link_order); - r_extern = 1; - h = ((struct aout_link_hash_entry *) - bfd_wrapped_link_hash_lookup (finfo->output_bfd, finfo->info, - pr->u.name, false, false, true)); - if (h != (struct aout_link_hash_entry *) NULL - && h->indx >= 0) - r_index = h->indx; - else if (h != NULL) - { - /* We decided to strip this symbol, but it turns out that we - can't. Note that we lose the other and desc information - here. I don't think that will ever matter for a global - symbol. */ - h->indx = -2; - h->written = false; - if (! aout_link_write_other_symbol (h, (PTR) finfo)) - return false; - r_index = h->indx; - } - else - { - if (! ((*finfo->info->callbacks->unattached_reloc) - (finfo->info, pr->u.name, (bfd *) NULL, - (asection *) NULL, (bfd_vma) 0))) - return false; - r_index = 0; - } - } - - howto = bfd_reloc_type_lookup (finfo->output_bfd, pr->reloc); - if (howto == 0) - { - bfd_set_error (bfd_error_bad_value); - return false; - } - - if (o == obj_textsec (finfo->output_bfd)) - reloff_ptr = &finfo->treloff; - else if (o == obj_datasec (finfo->output_bfd)) - reloff_ptr = &finfo->dreloff; - else - abort (); - - if (obj_reloc_entry_size (finfo->output_bfd) == RELOC_STD_SIZE) - { -#ifdef MY_put_reloc - MY_put_reloc(finfo->output_bfd, r_extern, r_index, p->offset, howto, - &srel); -#else - { - int r_pcrel; - int r_baserel; - int r_jmptable; - int r_relative; - int r_length; - - r_pcrel = howto->pc_relative; - r_baserel = (howto->type & 8) != 0; - r_jmptable = (howto->type & 16) != 0; - r_relative = (howto->type & 32) != 0; - r_length = howto->size; - - PUT_WORD (finfo->output_bfd, p->offset, srel.r_address); - if (bfd_header_big_endian (finfo->output_bfd)) - { - srel.r_index[0] = r_index >> 16; - srel.r_index[1] = r_index >> 8; - srel.r_index[2] = r_index; - srel.r_type[0] = - ((r_extern ? RELOC_STD_BITS_EXTERN_BIG : 0) - | (r_pcrel ? RELOC_STD_BITS_PCREL_BIG : 0) - | (r_baserel ? RELOC_STD_BITS_BASEREL_BIG : 0) - | (r_jmptable ? RELOC_STD_BITS_JMPTABLE_BIG : 0) - | (r_relative ? RELOC_STD_BITS_RELATIVE_BIG : 0) - | (r_length << RELOC_STD_BITS_LENGTH_SH_BIG)); - } - else - { - srel.r_index[2] = r_index >> 16; - srel.r_index[1] = r_index >> 8; - srel.r_index[0] = r_index; - srel.r_type[0] = - ((r_extern ? RELOC_STD_BITS_EXTERN_LITTLE : 0) - | (r_pcrel ? RELOC_STD_BITS_PCREL_LITTLE : 0) - | (r_baserel ? RELOC_STD_BITS_BASEREL_LITTLE : 0) - | (r_jmptable ? RELOC_STD_BITS_JMPTABLE_LITTLE : 0) - | (r_relative ? RELOC_STD_BITS_RELATIVE_LITTLE : 0) - | (r_length << RELOC_STD_BITS_LENGTH_SH_LITTLE)); - } - } -#endif - rel_ptr = (PTR) &srel; - - /* We have to write the addend into the object file, since - standard a.out relocs are in place. It would be more - reliable if we had the current contents of the file here, - rather than assuming zeroes, but we can't read the file since - it was opened using bfd_openw. */ - if (pr->addend != 0) - { - bfd_size_type size; - bfd_reloc_status_type r; - bfd_byte *buf; - boolean ok; - - size = bfd_get_reloc_size (howto); - buf = (bfd_byte *) bfd_zmalloc (size); - if (buf == (bfd_byte *) NULL) - return false; - r = MY_relocate_contents (howto, finfo->output_bfd, - pr->addend, buf); - switch (r) - { - case bfd_reloc_ok: - break; - default: - case bfd_reloc_outofrange: - abort (); - case bfd_reloc_overflow: - if (! ((*finfo->info->callbacks->reloc_overflow) - (finfo->info, - (p->type == bfd_section_reloc_link_order - ? bfd_section_name (finfo->output_bfd, - pr->u.section) - : pr->u.name), - howto->name, pr->addend, (bfd *) NULL, - (asection *) NULL, (bfd_vma) 0))) - { - free (buf); - return false; - } - break; - } - ok = bfd_set_section_contents (finfo->output_bfd, o, - (PTR) buf, - (file_ptr) p->offset, - size); - free (buf); - if (! ok) - return false; - } - } - else - { -#ifdef MY_put_ext_reloc - MY_put_ext_reloc (finfo->output_bfd, r_extern, r_index, p->offset, - howto, &erel, pr->addend); -#else - PUT_WORD (finfo->output_bfd, p->offset, erel.r_address); - - if (bfd_header_big_endian (finfo->output_bfd)) - { - erel.r_index[0] = r_index >> 16; - erel.r_index[1] = r_index >> 8; - erel.r_index[2] = r_index; - erel.r_type[0] = - ((r_extern ? RELOC_EXT_BITS_EXTERN_BIG : 0) - | (howto->type << RELOC_EXT_BITS_TYPE_SH_BIG)); - } - else - { - erel.r_index[2] = r_index >> 16; - erel.r_index[1] = r_index >> 8; - erel.r_index[0] = r_index; - erel.r_type[0] = - (r_extern ? RELOC_EXT_BITS_EXTERN_LITTLE : 0) - | (howto->type << RELOC_EXT_BITS_TYPE_SH_LITTLE); - } - - PUT_WORD (finfo->output_bfd, pr->addend, erel.r_addend); -#endif /* MY_put_ext_reloc */ - - rel_ptr = (PTR) &erel; - } - - if (bfd_seek (finfo->output_bfd, *reloff_ptr, SEEK_SET) != 0 - || (bfd_write (rel_ptr, (bfd_size_type) 1, - obj_reloc_entry_size (finfo->output_bfd), - finfo->output_bfd) - != obj_reloc_entry_size (finfo->output_bfd))) - return false; - - *reloff_ptr += obj_reloc_entry_size (finfo->output_bfd); - - /* Assert that the relocs have not run into the symbols, and that n - the text relocs have not run into the data relocs. */ - BFD_ASSERT (*reloff_ptr <= obj_sym_filepos (finfo->output_bfd) - && (reloff_ptr != &finfo->treloff - || (*reloff_ptr - <= obj_datasec (finfo->output_bfd)->rel_filepos))); - - return true; -} |