Initial creation of sourceware repository

1 files changed, 0 insertions, 451 deletions

diff --git a/gdb/mipsread.c b/gdb/mipsread.c
deleted file mode 100644
index 8e7d19d..0000000
--- a/gdb/mipsread.c
+++ /dev/null
@@ -1,451 +0,0 @@
-/* Read a symbol table in MIPS' format (Third-Eye).
-   Copyright 1986, 1987, 1989, 1990, 1991, 1992, 1993, 1994, 1995, 1996
-   Free Software Foundation, Inc.
-   Contributed by Alessandro Forin (af@cs.cmu.edu) at CMU.  Major work
-   by Per Bothner, John Gilmore and Ian Lance Taylor at Cygnus Support.
-
-This file is part of GDB.
-
-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.  */
-
-/* Read symbols from an ECOFF file.  Most of the work is done in
-   mdebugread.c.  */
-
-#include "defs.h"
-#include "gdb_string.h"
-#include "bfd.h"
-#include "symtab.h"
-#include "symfile.h"
-#include "objfiles.h"
-#include "buildsym.h"
-#include "stabsread.h"
-#include "gdb-stabs.h"
-
-#include "coff/sym.h"
-#include "coff/internal.h"
-#include "coff/ecoff.h"
-#include "libcoff.h"		/* Private BFD COFF information.  */
-#include "libecoff.h"		/* Private BFD ECOFF information.  */
-#include "elf/common.h"
-#include "elf/mips.h"
-
-static void
-mipscoff_new_init PARAMS ((struct objfile *));
-
-static void
-mipscoff_symfile_init PARAMS ((struct objfile *));
-
-static void
-mipscoff_symfile_read PARAMS ((struct objfile *, struct section_offsets *,
-			       int));
-
-static void
-mipscoff_symfile_finish PARAMS ((struct objfile *));
-
-static void
-read_alphacoff_dynamic_symtab PARAMS ((struct section_offsets *,
-				       struct objfile *objfile));
-
-/* Initialize anything that needs initializing when a completely new
-   symbol file is specified (not just adding some symbols from another
-   file, e.g. a shared library).  */
-
-extern CORE_ADDR sigtramp_address;
-
-static void
-mipscoff_new_init (ignore)
-     struct objfile *ignore;
-{
-  sigtramp_address = 0;
-  stabsread_new_init ();
-  buildsym_new_init ();
-}
-
-/* Initialize to read a symbol file (nothing to do).  */
-
-static void
-mipscoff_symfile_init (objfile)
-     struct objfile *objfile;
-{
-}
-
-/* Read a symbol file from a file.  */
-
-static void
-mipscoff_symfile_read (objfile, section_offsets, mainline)
-     struct objfile *objfile;
-     struct section_offsets *section_offsets;
-     int mainline;
-{
-  bfd *abfd = objfile->obfd;
-  struct cleanup * back_to;
-
-  init_minimal_symbol_collection ();
-  back_to = make_cleanup (discard_minimal_symbols, 0);
-
-  /* Now that the executable file is positioned at symbol table,
-     process it and define symbols accordingly.  */
-
-  if (!((*ecoff_backend (abfd)->debug_swap.read_debug_info)
-	(abfd, (asection *) NULL, &ecoff_data (abfd)->debug_info)))
-    error ("Error reading symbol table: %s", bfd_errmsg (bfd_get_error ()));
-
-  mdebug_build_psymtabs (objfile, &ecoff_backend (abfd)->debug_swap,
-			 &ecoff_data (abfd)->debug_info, section_offsets);
-
-  /* Add alpha coff dynamic symbols.  */
-
-  read_alphacoff_dynamic_symtab (section_offsets, objfile);
-
-  /* Install any minimal symbols that have been collected as the current
-     minimal symbols for this objfile. */
-
-  install_minimal_symbols (objfile);
-
-  /* If the entry_file bounds are still unknown after processing the
-     partial symbols, then try to set them from the minimal symbols
-     surrounding the entry_point.  */
-
-  if (mainline
-      && objfile->ei.entry_point != INVALID_ENTRY_POINT
-      && objfile->ei.entry_file_lowpc == INVALID_ENTRY_LOWPC)
-    {
-      struct minimal_symbol *m;
-
-      m = lookup_minimal_symbol_by_pc (objfile->ei.entry_point);
-      if (m && SYMBOL_NAME (m + 1))
-	{
-	  objfile->ei.entry_file_lowpc = SYMBOL_VALUE_ADDRESS (m);
-	  objfile->ei.entry_file_highpc = SYMBOL_VALUE_ADDRESS (m + 1);
-	}
-    }
-
-  do_cleanups (back_to);
-}
-
-/* Perform any local cleanups required when we are done with a
-   particular objfile.  */
-
-static void
-mipscoff_symfile_finish (objfile)
-     struct objfile *objfile;
-{
-}
-
-/* Alpha OSF/1 encapsulates the dynamic symbols in ELF format in a
-   standard coff section.  The ELF format for the symbols differs from
-   the format defined in elf/external.h. It seems that a normal ELF 32 bit
-   format is used, and the representation only changes because longs are
-   64 bit on the alpha. In addition, the handling of text/data section
-   indices for symbols is different from the ELF ABI.
-   As the BFD linker currently does not support dynamic linking on the alpha,
-   there seems to be no reason to pollute BFD with another mixture of object
-   file formats for now.  */
-
-/* Format of an alpha external ELF symbol.  */
-
-typedef struct {
-  unsigned char	st_name[4];		/* Symbol name, index in string tbl */
-  unsigned char	st_pad[4];		/* Pad to long word boundary */
-  unsigned char	st_value[8];		/* Value of the symbol */
-  unsigned char	st_size[4];		/* Associated symbol size */
-  unsigned char	st_info[1];		/* Type and binding attributes */
-  unsigned char	st_other[1];		/* No defined meaning, 0 */
-  unsigned char	st_shndx[2];		/* Associated section index */
-} Elfalpha_External_Sym;
-
-/* Format of an alpha external ELF dynamic info structure.  */
-
-typedef struct {
-  unsigned char	d_tag[4];		/* Tag */
-  unsigned char	d_pad[4];		/* Pad to long word boundary */
-  union {
-    unsigned char d_ptr[8];		/* Pointer value */
-    unsigned char d_val[4];		/* Integer value */
-  } d_un;
-} Elfalpha_External_Dyn;
-
-/* Struct to obtain the section pointers for alpha dynamic symbol info.  */
-
-struct alphacoff_dynsecinfo {
-  asection *sym_sect;		/* Section pointer for .dynsym section */
-  asection *str_sect;		/* Section pointer for .dynstr section */
-  asection *dyninfo_sect;	/* Section pointer for .dynamic section */
-  asection *got_sect;		/* Section pointer for .got section */
-};
-
-static void
-alphacoff_locate_sections PARAMS ((bfd *, asection *, void *));
-
-/* We are called once per section from read_alphacoff_dynamic_symtab.
-   We need to examine each section we are passed, check to see
-   if it is something we are interested in processing, and
-   if so, stash away some access information for the section.  */
-
-static void
-alphacoff_locate_sections (ignore_abfd, sectp, sip)
-     bfd *ignore_abfd;
-     asection *sectp;
-     PTR sip;
-{
-  register struct alphacoff_dynsecinfo *si;
-
-  si = (struct alphacoff_dynsecinfo *) sip;
-
-  if (STREQ (sectp->name, ".dynsym"))
-    {
-      si->sym_sect = sectp;
-    }
-  else if (STREQ (sectp->name, ".dynstr"))
-    {
-      si->str_sect = sectp;
-    }
-  else if (STREQ (sectp->name, ".dynamic"))
-    {
-      si->dyninfo_sect = sectp;
-    }
-  else if (STREQ (sectp->name, ".got"))
-    {
-      si->got_sect = sectp;
-    }
-}
-
-/* Scan an alpha dynamic symbol table for symbols of interest and
-   add them to the minimal symbol table.  */
-
-static void
-read_alphacoff_dynamic_symtab (section_offsets, objfile)
-     struct section_offsets *section_offsets;
-     struct objfile *objfile;
-{
-  bfd *abfd = objfile->obfd;
-  struct alphacoff_dynsecinfo si;
-  char *sym_secptr;
-  char *str_secptr;
-  char *dyninfo_secptr;
-  char *got_secptr;
-  bfd_size_type sym_secsize;
-  bfd_size_type str_secsize;
-  bfd_size_type dyninfo_secsize;
-  bfd_size_type got_secsize;
-  int sym_count;
-  int i;
-  int stripped;
-  Elfalpha_External_Sym *x_symp;
-  char *dyninfo_p;
-  char *dyninfo_end;
-  int got_entry_size = 8;
-  int dt_mips_local_gotno = -1;
-  int dt_mips_gotsym = -1;
-
-
-  /* We currently only know how to handle alpha dynamic symbols.  */
-  if (bfd_get_arch (abfd) != bfd_arch_alpha)
-    return;
-
-  /* Locate the dynamic symbols sections and read them in.  */
-  memset ((char *) &si, 0, sizeof (si));
-  bfd_map_over_sections (abfd, alphacoff_locate_sections, (PTR) &si);
-  if (si.sym_sect == NULL
-      || si.str_sect == NULL
-      || si.dyninfo_sect == NULL
-      || si.got_sect == NULL)
-    return;
-
-  sym_secsize = bfd_get_section_size_before_reloc (si.sym_sect);
-  str_secsize = bfd_get_section_size_before_reloc (si.str_sect);
-  dyninfo_secsize = bfd_get_section_size_before_reloc (si.dyninfo_sect);
-  got_secsize = bfd_get_section_size_before_reloc (si.got_sect);
-  sym_secptr = alloca (sym_secsize);
-  str_secptr = alloca (str_secsize);
-  dyninfo_secptr = alloca (dyninfo_secsize);
-  got_secptr = alloca (got_secsize);
-
-  if (!bfd_get_section_contents (abfd, si.sym_sect, sym_secptr,
-				 (file_ptr)0, sym_secsize))
-    return;
-  if (!bfd_get_section_contents (abfd, si.str_sect, str_secptr,
-				 (file_ptr)0, str_secsize))
-    return;
-  if (!bfd_get_section_contents (abfd, si.dyninfo_sect, dyninfo_secptr,
-				 (file_ptr)0, dyninfo_secsize))
-    return;
-  if (!bfd_get_section_contents (abfd, si.got_sect, got_secptr,
-				 (file_ptr)0, got_secsize))
-    return;
-
-  /* Find the number of local GOT entries and the index for the
-     the first dynamic symbol in the GOT. */
-  for (dyninfo_p = dyninfo_secptr, dyninfo_end = dyninfo_p + dyninfo_secsize;
-       dyninfo_p < dyninfo_end;
-       dyninfo_p += sizeof (Elfalpha_External_Dyn))
-    {
-      Elfalpha_External_Dyn *x_dynp = (Elfalpha_External_Dyn *)dyninfo_p;
-      long dyn_tag;
-
-      dyn_tag = bfd_h_get_32 (abfd, (bfd_byte *) x_dynp->d_tag);
-      if (dyn_tag == DT_NULL)
-	break;
-      else if (dyn_tag == DT_MIPS_LOCAL_GOTNO)
-	{
-	  if (dt_mips_local_gotno < 0)
-	    dt_mips_local_gotno
-	      = bfd_h_get_32 (abfd, (bfd_byte *) x_dynp->d_un.d_val);
-	}
-      else if (dyn_tag == DT_MIPS_GOTSYM)
-	{
-	  if (dt_mips_gotsym < 0)
-	    dt_mips_gotsym
-	      = bfd_h_get_32 (abfd, (bfd_byte *) x_dynp->d_un.d_val);
-	}
-    }
-  if (dt_mips_local_gotno < 0 || dt_mips_gotsym < 0)
-    return;
-
-  /* Scan all dynamic symbols and enter them into the minimal symbol table
-     if appropriate.  */
-  sym_count = sym_secsize / sizeof (Elfalpha_External_Sym);
-  stripped = (bfd_get_symcount (abfd) == 0);
-
-  /* Skip first symbol, which is a null dummy.  */
-  for (i = 1, x_symp = (Elfalpha_External_Sym *) sym_secptr + 1;
-       i < sym_count;
-       i++, x_symp++)
-    {
-      unsigned long strx;
-      char *name;
-      bfd_vma sym_value;
-      unsigned char sym_info;
-      unsigned int sym_shndx;
-      int isglobal;
-      enum minimal_symbol_type ms_type;
-
-      strx = bfd_h_get_32 (abfd, (bfd_byte *) x_symp->st_name);
-      if (strx >= str_secsize)
-	continue;
-      name = str_secptr + strx;
-      if (*name == '\0' || *name == '.')
-	continue;
-
-      sym_value = bfd_h_get_64 (abfd, (bfd_byte *) x_symp->st_value);
-      sym_info = bfd_h_get_8 (abfd, (bfd_byte *) x_symp->st_info);
-      sym_shndx = bfd_h_get_16 (abfd, (bfd_byte *) x_symp->st_shndx);
-      isglobal = (ELF_ST_BIND (sym_info) == STB_GLOBAL);
-
-      if (sym_shndx == SHN_UNDEF)
-	{
-	  /* Handle undefined functions which are defined in a shared
-	     library.  */
-	  if (ELF_ST_TYPE (sym_info) != STT_FUNC
-	      || ELF_ST_BIND (sym_info) != STB_GLOBAL)
-	    continue;
-
-	  ms_type = mst_solib_trampoline;
-
-	  /* If sym_value is nonzero, it points to the shared library
-	     trampoline entry, which is what we are looking for.
-
-	     If sym_value is zero, then we have to get the GOT entry
-	     for the symbol.
-	     If the GOT entry is nonzero, it represents the quickstart
-	     address of the function and we use that as the symbol value.
-
-	     If the GOT entry is zero, the function address has to be resolved
-	     by the runtime loader before the executable is started.
-	     We are unable to find any meaningful address for these
-	     functions in the executable file, so we skip them.  */
-	  if (sym_value == 0)
-	    {
-	      int got_entry_offset =
-		(i - dt_mips_gotsym + dt_mips_local_gotno) * got_entry_size;
-
-	      if (got_entry_offset < 0 || got_entry_offset >= got_secsize)
-		continue;
-	      sym_value =
-		bfd_h_get_64 (abfd,
-			      (bfd_byte *) (got_secptr + got_entry_offset));
-	      if (sym_value == 0)
-		continue;
-	    }
-	}
-      else
-	{
-	  /* Symbols defined in the executable itself. We only care about
-	     them if this is a stripped executable, otherwise they have
-	     been retrieved from the normal symbol table already.  */
-	  if (!stripped)
-	    continue;
-
-	  if (sym_shndx == SHN_MIPS_TEXT)
-	    {
-	      if (isglobal)
-		ms_type = mst_text;
-	      else
-		ms_type = mst_file_text;
-	      sym_value += ANOFFSET (section_offsets, SECT_OFF_TEXT);
-	    }
-	  else if (sym_shndx == SHN_MIPS_DATA)
-	    {
-	      if (isglobal)
-		ms_type = mst_data;
-	      else
-		ms_type = mst_file_data;
-	      sym_value += ANOFFSET (section_offsets, SECT_OFF_DATA);
-	    }
-	  else if (sym_shndx == SHN_MIPS_ACOMMON)
-	    {
-	      if (isglobal)
-		ms_type = mst_bss;
-	      else
-		ms_type = mst_file_bss;
-	      sym_value += ANOFFSET (section_offsets, SECT_OFF_BSS);
-	    }
-	  else if (sym_shndx == SHN_ABS)
-	    {
-	      ms_type = mst_abs;
-	    }
-	  else
-	    {
-	      continue;
-	    }
-	}
-
-      prim_record_minimal_symbol (obsavestring (name,
-						strlen (name),
-						&objfile -> symbol_obstack),
-				  sym_value,
-				  ms_type,
-				  objfile);
-    }
-}
-
-/* Initialization */
-
-static struct sym_fns ecoff_sym_fns =
-{
-  bfd_target_ecoff_flavour,
-  mipscoff_new_init,		/* sym_new_init: init anything gbl to entire symtab */
-  mipscoff_symfile_init,	/* sym_init: read initial info, setup for sym_read() */
-  mipscoff_symfile_read,	/* sym_read: read a symbol file into symtab */
-  mipscoff_symfile_finish,	/* sym_finish: finished with file, cleanup */
-  default_symfile_offsets,	/* sym_offsets: dummy FIXME til implem sym reloc */
-  NULL				/* next: pointer to next struct sym_fns */
-};
-
-void
-_initialize_mipsread ()
-{
-  add_symtab_fns (&ecoff_sym_fns);
-}