mirror of
https://github.com/bminor/binutils-gdb.git
synced 2025-12-26 09:08:59 +00:00
Extensive changes to move the bulk of the linker into BFD so that
more efficient backend code can be written for specific object files. Only existing efficient backend is a.out. * seclet.c, seclet.h: Removed. * hash.c, linker.c, genlink.h: New files. * bfd-in.h: Removed bfd_error_vector. Declared hash table structures and functions. (JUMP_TABLE): Removed bfd_seclet_link, added bfd_link_hash_table_create, bfd_link_add_symbols and bfd_final_link. * All backends: Changed accordingly. * bfd-in2.h: Rebuilt. * bfd.c (struct _bfd): Added link_next and archive_pass fields. Removed ld_symbols field. (bfd_nonrepresentable_section, bfd_undefined_symbol, bfd_reloc_value_truncated, bfd_reloc_is_dangerous, bfd_error_vector): Removed. (bfd_default_error_trap, bfd_error_trap, bfd_error_nonrepresentabltrap): Removed. (bfd_get_relocated_section_contents): Pass link_info. Pass link_order instead of seclet. Pass symbols. (bfd_relax_section): Pass link_info. (bfd_seclet_link): Removed. (bfd_link_hash_table_create, bfd_link_add_symbols, bfd_final_link): New macros. * libbfd-in.h: If __GNUC__ is defined and alloca is not, define alloca as __builtin_alloca. Declare internal linking functions. * libbfd.h: Rebuilt. * libbfd.c (bfd_seek): Comment out fseek assertion. It's worked for months. * reloc.c (reloc_howto_type): Added error_message argument to special_function field. Changed all callers and all definitions. (bfd_get_reloc_size): Make argument a const pointer. (bfd_perform_relocation): Add error_message argument to hold string set if return value if bfd_reloc_dangerous. Changed all callers. (_bfd_final_link_relocate, _bfd_relocate_contents): New functions. * section.c (asection): Renamed seclets_head and seclets_tail to link_order_head and link_order_tail. * targets.c (bfd_target): Replaced seclet argument with link_info and link_order and symbols arguments in bfd_get_relocated_section_contents. Added symbols argument to bfd_relax_section. Removed bfd_seclet_link. Added bfd_link_hash_table_create, bfd_link_add_symbols and bfd_final_link. * libaout.h (struct aoutdata): Added external_syms, external_sym_count, external_strings, sym_hashes fields. (obj_aout_external_syms, obj_aout_external_sym_count, obj_aout_external_strings, obj_aout_sym_hashes): New accessor macros. (WRITE_HEADERS): Only output symbols if outsymbols is not NULL. * aoutx.h: Wrote new back end linker routines. (translate_to_native_sym_flags): Return boolean value. Don't use bfd_error_vector. (NAME(aout,write_syms)): Return boolean value. Check return value of translate_to_native_sym_flags and bfd_write. * aout-target.h (final_link_callback): New function. (MY_bfd_final_link): New function. * aout-adobe.c (aout_adobe_write_object_contents): Check return value of aout_32_write_syms. * hp300hpux.c (MY(write_object_contents)): Likewise. * i386lynx.c (WRITE_HEADERS): Likewise. * libaout.h (WRITE_HEADERS): Likewise. * bout.c: Changed functions to use link_info->callbacks rather than bfd_error_vector, and link_orders rather than seclets. * coff-alpha.c: Likewise. * coff-h8300.c: Likewise. * coff-h8500.c: Likewise. * coff-sh.c: Likewise. * coff-z8k.c: Likewise. * elf32-hppa.c: Likewise. * reloc16.c: Likewise. * coff-alpha.c (alpha_ecoff_get_relocated_section_contents): Look up _gp in the hash table rather than in outsymbols. * coff-a29k.c (a29k_reloc): Pass errors back in new error_message argument rather than printing them. * coffcode.h (bfd_coff_reloc16_extra_cases): Take link_info and link_order arguments rather than seclet. Changed all uses and definitions. (bfd_coff_reloc16_estimate): Pass link_info arguments. Changed all uses and definitions. * libcoff.h: Rebuilt. * ecoff.c (ecoff_get_extr): If symbol is defined by linker, but not by ECOFF, make it scAbs. (ecoff_bfd_final_link): Renamed from ecoff_bfd_seclet_link and rewritten. * elf32-mips.c (mips_elf_final_link): Renamed from mips_elf_seclet_link and rewritten. * elf32-hppa.c (elf32_hppa_stub_description): Added link_info field. (new_stub, add_stub_by_name, hppa_elf_build_arg_reloc_stub, hppa_elf_build_long_branch_stub, hppa_look_for_stubs_in_section): Added link_info arguments. Changed all callers. * elfcode.h (elf_slurp_symbol_table): Don't quit if outsymbols is not NULL. * oasys.c (oasys_write_sections): Return boolean value rather than using bfd_error_vector. (oasys_write_object_contents): Check return value of oasys_write_sections. * hosts/std-host.h: Don't declare qsort or strtol. * Makefile.in: Rebuild dependencies. (BFD_LIBS): Removed seclet.o. Added hash.o and linker.o. (CFILES): Removed seclet.c. Added hash.c and linker.c. (HFILES): Removed seclet.h. Added genlink.h.
This commit is contained in:
Ian Lance Taylor
318
bfd/hpux-core.c
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318
bfd/hpux-core.c
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@@ -0,0 +1,318 @@
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/* BFD back-end for HP/UX core files.
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Copyright 1993 Free Software Foundation, Inc.
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Written by Stu Grossman, Cygnus Support.
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Converted to back-end form by Ian Lance Taylor, Cygnus SUpport
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This file is part of BFD, the Binary File Descriptor library.
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software
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Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. */
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/* This file can only be compiled on systems which use HP/UX style
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core files. In the config/XXXXXX.mh file for such a system add
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HDEFINES=-DHPUX_CORE
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HDEPFILES=hpux-core.o
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*/
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#include "bfd.h"
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#include "sysdep.h"
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#include "libbfd.h"
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#if defined (HOST_HPPAHPUX) || defined (HOST_HP300HPUX)
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/* FIXME: sys/core.h doesn't exist for HPUX version 7. HPUX version
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5, 6, and 7 core files seem to be standard trad-core.c type core
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files; can we just use trad-core.c in addition to this file? */
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#include <sys/core.h>
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#include <sys/utsname.h>
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#endif /* HOST_HPPAHPUX */
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#ifdef HOST_HPPABSD
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/* Not a very swift place to put it, but that's where the BSD port
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puts them. */
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#include "/hpux/usr/include/sys/core.h"
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#endif /* HOST_HPPABSD */
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#include <stdio.h>
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#include <sys/types.h>
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#include <sys/param.h>
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#include <sys/dir.h>
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#include <signal.h>
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#include <machine/reg.h>
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#include <sys/user.h> /* After a.out.h */
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#include <sys/file.h>
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#include <errno.h>
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/* These are stored in the bfd's tdata */
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struct hpux_core_struct
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{
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int sig;
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char cmd[MAXCOMLEN + 1];
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asection *data_section;
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asection *stack_section;
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asection *reg_section;
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};
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#define core_hdr(bfd) ((bfd)->tdata.hpux_core_data)
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#define core_signal(bfd) (core_hdr(bfd)->sig)
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#define core_command(bfd) (core_hdr(bfd)->cmd)
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#define core_datasec(bfd) (core_hdr(bfd)->data_section)
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#define core_stacksec(bfd) (core_hdr(bfd)->stack_section)
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#define core_regsec(bfd) (core_hdr(bfd)->reg_section)
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static asection *
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make_bfd_asection (abfd, name, flags, _raw_size, vma, alignment_power)
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bfd *abfd;
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CONST char *name;
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flagword flags;
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bfd_size_type _raw_size;
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bfd_vma vma;
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unsigned int alignment_power;
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{
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asection *asect;
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asect = bfd_make_section (abfd, name);
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if (!asect)
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return NULL;
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asect->flags = flags;
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asect->_raw_size = _raw_size;
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asect->vma = vma;
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asect->filepos = bfd_tell (abfd);
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asect->alignment_power = alignment_power;
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return asect;
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}
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static asymbol *
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hpux_core_make_empty_symbol (abfd)
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bfd *abfd;
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{
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asymbol *new = (asymbol *) bfd_zalloc (abfd, sizeof (asymbol));
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new->the_bfd = abfd;
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return new;
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}
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static bfd_target *
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hpux_core_core_file_p (abfd)
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bfd *abfd;
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{
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core_hdr (abfd) = (struct hpux_core_struct *)
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bfd_zalloc (abfd, sizeof (struct hpux_core_struct));
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if (!core_hdr (abfd))
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return NULL;
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while (1)
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{
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int val;
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struct corehead core_header;
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val = bfd_read ((void *) &core_header, 1, sizeof core_header, abfd);
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if (val <= 0)
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break;
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switch (core_header.type)
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{
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case CORE_KERNEL:
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case CORE_FORMAT:
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bfd_seek (abfd, core_header.len, SEEK_CUR); /* Just skip this */
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break;
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case CORE_EXEC:
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{
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struct proc_exec proc_exec;
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bfd_read ((void *) &proc_exec, 1, core_header.len, abfd);
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strncpy (core_command (abfd), proc_exec.cmd, MAXCOMLEN + 1);
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}
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break;
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case CORE_PROC:
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{
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struct proc_info proc_info;
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core_regsec (abfd) = make_bfd_asection (abfd, ".reg",
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SEC_ALLOC + SEC_HAS_CONTENTS,
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core_header.len,
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(int) &proc_info - (int) &proc_info.hw_regs,
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2);
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bfd_read (&proc_info, 1, core_header.len, abfd);
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core_signal (abfd) = proc_info.sig;
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}
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if (!core_regsec (abfd))
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return NULL;
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break;
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case CORE_DATA:
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core_datasec (abfd) = make_bfd_asection (abfd, ".data",
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SEC_ALLOC + SEC_LOAD + SEC_HAS_CONTENTS,
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core_header.len,
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core_header.addr,
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2);
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if (!core_datasec (abfd))
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return NULL;
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bfd_seek (abfd, core_header.len, SEEK_CUR);
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break;
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case CORE_STACK:
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core_stacksec (abfd) = make_bfd_asection (abfd, ".stack",
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SEC_ALLOC + SEC_LOAD + SEC_HAS_CONTENTS,
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core_header.len,
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core_header.addr,
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2);
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if (!core_stacksec (abfd))
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return NULL;
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bfd_seek (abfd, core_header.len, SEEK_CUR);
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break;
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default:
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/* Falling into here is an error and should prevent this
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target from matching. That way systems which use hpux
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cores along with other formats can still work. */
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return 0;
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}
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}
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/* OK, we believe you. You're a core file (sure, sure). */
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return abfd->xvec;
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}
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static char *
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hpux_core_core_file_failing_command (abfd)
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bfd *abfd;
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{
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return core_command (abfd);
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}
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/* ARGSUSED */
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static int
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hpux_core_core_file_failing_signal (abfd)
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bfd *abfd;
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{
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return core_signal (abfd);
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}
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/* ARGSUSED */
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static boolean
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hpux_core_core_file_matches_executable_p (core_bfd, exec_bfd)
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bfd *core_bfd, *exec_bfd;
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{
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return true; /* FIXME, We have no way of telling at this point */
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}
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/* No archive file support via this BFD */
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#define hpux_core_openr_next_archived_file bfd_generic_openr_next_archived_file
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#define hpux_core_generic_stat_arch_elt bfd_generic_stat_arch_elt
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#define hpux_core_slurp_armap bfd_false
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#define hpux_core_slurp_extended_name_table bfd_true
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#define hpux_core_write_armap (boolean (*) PARAMS \
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((bfd *arch, unsigned int elength, struct orl *map, \
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unsigned int orl_count, int stridx))) bfd_false
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#define hpux_core_truncate_arname bfd_dont_truncate_arname
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#define hpux_core_close_and_cleanup bfd_generic_close_and_cleanup
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#define hpux_core_set_section_contents (boolean (*) PARAMS \
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((bfd *abfd, asection *section, PTR data, file_ptr offset, \
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bfd_size_type count))) bfd_false
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#define hpux_core_get_section_contents bfd_generic_get_section_contents
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#define hpux_core_new_section_hook (boolean (*) PARAMS \
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((bfd *, sec_ptr))) bfd_true
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#define hpux_core_get_symtab_upper_bound bfd_0u
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#define hpux_core_get_symtab (unsigned int (*) PARAMS \
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((bfd *, struct symbol_cache_entry **))) bfd_0u
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#define hpux_core_get_reloc_upper_bound (unsigned int (*) PARAMS \
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((bfd *, sec_ptr))) bfd_0u
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#define hpux_core_canonicalize_reloc (unsigned int (*) PARAMS \
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((bfd *, sec_ptr, arelent **, struct symbol_cache_entry**))) bfd_0u
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#define hpux_core_print_symbol (void (*) PARAMS \
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((bfd *, PTR, struct symbol_cache_entry *, \
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bfd_print_symbol_type))) bfd_false
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#define hpux_core_get_symbol_info (void (*) PARAMS \
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((bfd *, struct symbol_cache_entry *, \
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symbol_info *))) bfd_false
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#define hpux_core_get_lineno (alent * (*) PARAMS \
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((bfd *, struct symbol_cache_entry *))) bfd_nullvoidptr
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#define hpux_core_set_arch_mach (boolean (*) PARAMS \
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((bfd *, enum bfd_architecture, unsigned long))) bfd_false
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#define hpux_core_find_nearest_line (boolean (*) PARAMS \
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((bfd *abfd, struct sec *section, \
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struct symbol_cache_entry **symbols,bfd_vma offset, \
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CONST char **file, CONST char **func, unsigned int *line))) bfd_false
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#define hpux_core_sizeof_headers (int (*) PARAMS \
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((bfd *, boolean))) bfd_0
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#define hpux_core_bfd_debug_info_start bfd_void
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#define hpux_core_bfd_debug_info_end bfd_void
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#define hpux_core_bfd_debug_info_accumulate (void (*) PARAMS \
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((bfd *, struct sec *))) bfd_void
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#define hpux_core_bfd_get_relocated_section_contents bfd_generic_get_relocated_section_contents
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#define hpux_core_bfd_relax_section bfd_generic_relax_section
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#define hpux_core_bfd_reloc_type_lookup \
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((CONST struct reloc_howto_struct *(*) PARAMS ((bfd *, bfd_reloc_code_real_type))) bfd_nullvoidptr)
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#define hpux_core_bfd_make_debug_symbol \
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((asymbol *(*) PARAMS ((bfd *, void *, unsigned long))) bfd_nullvoidptr)
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#define hpux_core_bfd_link_hash_table_create \
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((struct bfd_link_hash_table *(*) PARAMS ((bfd *))) bfd_nullvoidptr)
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#define hpux_core_bfd_link_add_symbols \
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((boolean (*) PARAMS ((bfd *, struct bfd_link_info *))) bfd_false)
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#define hpux_core_bfd_final_link \
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((boolean (*) PARAMS ((bfd *, struct bfd_link_info *))) bfd_false)
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/* If somebody calls any byte-swapping routines, shoot them. */
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void
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swap_abort()
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{
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abort(); /* This way doesn't require any declaration for ANSI to fuck up */
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}
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#define NO_GET ((bfd_vma (*) PARAMS (( bfd_byte *))) swap_abort )
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#define NO_PUT ((void (*) PARAMS ((bfd_vma, bfd_byte *))) swap_abort )
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#define NO_SIGNED_GET ((bfd_signed_vma (*) PARAMS ((bfd_byte *))) swap_abort )
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bfd_target hpux_core_vec =
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{
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"hpux-core",
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bfd_target_unknown_flavour,
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true, /* target byte order */
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true, /* target headers byte order */
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(HAS_RELOC | EXEC_P | /* object flags */
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HAS_LINENO | HAS_DEBUG |
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HAS_SYMS | HAS_LOCALS | WP_TEXT | D_PAGED),
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(SEC_HAS_CONTENTS | SEC_ALLOC | SEC_LOAD | SEC_RELOC), /* section flags */
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0, /* symbol prefix */
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' ', /* ar_pad_char */
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16, /* ar_max_namelen */
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3, /* minimum alignment power */
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NO_GET, NO_SIGNED_GET, NO_PUT, /* 64 bit data */
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NO_GET, NO_SIGNED_GET, NO_PUT, /* 32 bit data */
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NO_GET, NO_SIGNED_GET, NO_PUT, /* 16 bit data */
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NO_GET, NO_SIGNED_GET, NO_PUT, /* 64 bit hdrs */
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NO_GET, NO_SIGNED_GET, NO_PUT, /* 32 bit hdrs */
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NO_GET, NO_SIGNED_GET, NO_PUT, /* 16 bit hdrs */
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{ /* bfd_check_format */
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_bfd_dummy_target, /* unknown format */
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_bfd_dummy_target, /* object file */
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_bfd_dummy_target, /* archive */
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hpux_core_core_file_p /* a core file */
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},
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{ /* bfd_set_format */
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bfd_false, bfd_false,
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bfd_false, bfd_false
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},
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{ /* bfd_write_contents */
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bfd_false, bfd_false,
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bfd_false, bfd_false
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},
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JUMP_TABLE(hpux_core),
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(PTR) 0 /* backend_data */
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};
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