e03c0cc670
* configure.in (mips-sgi-irix5*): New host and target. Use irix5 for both. * config/mips/irix5.mh, config/mips/irix5.mt, config/mips/xm-irix5.h, config/mips/nm-irix5.h, config/mips/tm-irix5.h, irix5-nat.c: New files for Irix 5 support. * mdebugread.c: New file, split out of mipsread.c. Added elfmdebug_build_psymtabs routine. Added some checks on external symbols. Changed code to keep ecoff_debug_info and ecoff_debug_swap structs in the psymtab and in global pointers rather than retrieving them from the bfd. Also changed to keep the pending list with the psymtab rather than the objfile (each psymtab for a single objfile points to the same pending list). * mipsread.c: Bulk of file moved into mdebugread.c, leaving just the sym_fns. * Makefile.in (SFILES): Added mdebugread.c. (OBS): Added mdebugread.o. (mdebugread.o): New target. * symfile.h: Declare mdebug_build_psymtabs and elfmdebug_build_psymtabs. * elfread.c (struct elfinfo): Added mdebugsect field. (elf_locate_sections): Remember location of .mdebug section. (elf_symfile_read): Call elfmdebug_build_psymtabs on .mdebug section. * infrun.c (AT_FUNCTION_START): Set to 0 if not already defined. (wait_for_inferior): Use AT_FUNCTION_START if it is defined to see if PC is at the start of a function. * mips-tdep.c (read_next_frame_reg): Use SIGFRAME_REG_SIZE, and give it a default definition. (mips_skip_prologue): Skip instructions which initialize $gp register. (in_sigtramp): New procedure, moved in from mipsread.c. * config/mips/tm-mips.h: Declare in_sigtramp.
158 lines
4.4 KiB
C
158 lines
4.4 KiB
C
/* Read a symbol table in MIPS' format (Third-Eye).
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Copyright 1986, 1987, 1989, 1990, 1991, 1992, 1993 Free Software
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Foundation, Inc.
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Contributed by Alessandro Forin (af@cs.cmu.edu) at CMU. Major work
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by Per Bothner, John Gilmore and Ian Lance Taylor at Cygnus Support.
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This file is part of GDB.
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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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/* Read symbols from an ECOFF file. Most of the work is done in
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mdebugread.c. */
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#include "defs.h"
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#include "symtab.h"
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#include "symfile.h"
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#include "objfiles.h"
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#include "buildsym.h"
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#include "stabsread.h"
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#include "gdb-stabs.h"
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#include "coff/internal.h"
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#include "coff/ecoff.h"
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#include "libcoff.h" /* Private BFD COFF information. */
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#include "libecoff.h" /* Private BFD ECOFF information. */
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static void
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mipscoff_new_init PARAMS ((struct objfile *));
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static void
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mipscoff_symfile_init PARAMS ((struct objfile *));
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static void
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mipscoff_symfile_read PARAMS ((struct objfile *, struct section_offsets *,
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int));
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static void
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mipscoff_symfile_finish PARAMS ((struct objfile *));
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static struct section_offsets *
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mipscoff_symfile_offsets PARAMS ((struct objfile *, CORE_ADDR));
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/* Initialize anything that needs initializing when a completely new
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symbol file is specified (not just adding some symbols from another
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file, e.g. a shared library). */
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extern CORE_ADDR sigtramp_address;
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static void
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mipscoff_new_init (ignore)
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struct objfile *ignore;
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{
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sigtramp_address = 0;
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stabsread_new_init ();
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buildsym_new_init ();
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}
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/* Initialize to read a symbol file (nothing to do). */
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static void
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mipscoff_symfile_init (objfile)
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struct objfile *objfile;
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{
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}
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/* Read a symbol file from a file. */
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static void
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mipscoff_symfile_read (objfile, section_offsets, mainline)
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struct objfile *objfile;
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struct section_offsets *section_offsets;
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int mainline;
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{
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bfd *abfd = objfile->obfd;
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struct cleanup * back_to;
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init_minimal_symbol_collection ();
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back_to = make_cleanup (discard_minimal_symbols, 0);
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/* Now that the executable file is positioned at symbol table,
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process it and define symbols accordingly. */
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if (ecoff_slurp_symbolic_info (abfd) == false)
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error ("Error reading symbol table: %s", bfd_errmsg (bfd_error));
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mdebug_build_psymtabs (objfile, &ecoff_backend (abfd)->debug_swap,
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&ecoff_data (abfd)->debug_info, section_offsets);
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/* Install any minimal symbols that have been collected as the current
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minimal symbols for this objfile. */
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install_minimal_symbols (objfile);
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do_cleanups (back_to);
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}
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/* Perform any local cleanups required when we are done with a
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particular objfile. */
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static void
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mipscoff_symfile_finish (objfile)
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struct objfile *objfile;
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{
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}
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/* Fake up identical offsets for all sections. */
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static struct section_offsets *
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mipscoff_symfile_offsets (objfile, addr)
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struct objfile *objfile;
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CORE_ADDR addr;
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{
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struct section_offsets *section_offsets;
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int i;
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objfile->num_sections = SECT_OFF_MAX;
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section_offsets = ((struct section_offsets *)
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obstack_alloc (&objfile->psymbol_obstack,
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(sizeof (struct section_offsets)
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+ (sizeof (section_offsets->offsets)
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* (SECT_OFF_MAX - 1)))));
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for (i = 0; i < SECT_OFF_MAX; i++)
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ANOFFSET (section_offsets, i) = addr;
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return section_offsets;
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}
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/* Initialization */
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static struct sym_fns ecoff_sym_fns =
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{
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bfd_target_ecoff_flavour,
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mipscoff_new_init, /* sym_new_init: init anything gbl to entire symtab */
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mipscoff_symfile_init, /* sym_init: read initial info, setup for sym_read() */
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mipscoff_symfile_read, /* sym_read: read a symbol file into symtab */
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mipscoff_symfile_finish, /* sym_finish: finished with file, cleanup */
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mipscoff_symfile_offsets, /* sym_offsets: dummy FIXME til implem sym reloc */
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NULL /* next: pointer to next struct sym_fns */
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};
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void
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_initialize_mipsread ()
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{
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add_symtab_fns (&ecoff_sym_fns);
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}
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