From e03c0cc67016bb6c50add63e0176a4c3cd0f011e Mon Sep 17 00:00:00 2001
From: Ian Lance Taylor <ian@airs.com>
Date: Mon, 6 Dec 1993 17:31:05 +0000
Subject: 	Added Irix 5 support. 	* 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.

---
 gdb/elfread.c | 19 ++++++++++++++++++-
 1 file changed, 18 insertions(+), 1 deletion(-)

(limited to 'gdb/elfread.c')

diff --git a/gdb/elfread.c b/gdb/elfread.c
index 1a0eee5..11a8c0e 100644
--- a/gdb/elfread.c
+++ b/gdb/elfread.c
@@ -45,6 +45,7 @@ struct elfinfo {
   unsigned int lnsize;		/* Size of dwarf line number section */
   asection *stabsect;		/* Section pointer for .stab section */
   asection *stabindexsect;	/* Section pointer for .stab.index section */
+  asection *mdebugsect;		/* Section pointer for .mdebug section */
 };
 
 /* Various things we might complain about... */
@@ -136,6 +137,10 @@ elf_locate_sections (ignore_abfd, sectp, eip)
     {
       ei -> stabindexsect = sectp;
     }
+  else if (STREQ (sectp -> name, ".mdebug"))
+    {
+      ei -> mdebugsect = sectp;
+    }
 }
 
 #if 0	/* Currently unused */
@@ -447,7 +452,8 @@ elf_symtab_read (abfd, addr, objfile)
    format to look for:  FIXME!!!
 
    dwarf_build_psymtabs() builds psymtabs for DWARF symbols;
-   elfstab_build_psymtabs() handles STABS symbols.
+   elfstab_build_psymtabs() handles STABS symbols;
+   mdebug_build_psymtabs() handles ECOFF debugging information.
 
    Note that ELF files have a "minimal" symbol table, which looks a lot
    like a COFF symbol table, but has only the minimal information necessary
@@ -519,6 +525,17 @@ elf_symfile_read (objfile, section_offsets, mainline)
 	  (file_ptr) elf_sect->sh_offset,		/* .stabstr offset */
 	  elf_sect->sh_size);				/* .stabstr size */
     }
+  if (ei.mdebugsect)
+    {
+      const struct ecoff_debug_swap *swap;
+
+      /* .mdebug section, presumably holding ECOFF debugging
+	 information.  */
+      swap = get_elf_backend_data (abfd)->elf_backend_ecoff_debug_swap;
+      if (swap)
+	elfmdebug_build_psymtabs (objfile, swap, ei.mdebugsect,
+				  section_offsets);
+    }
 
   if (!have_partial_symbols ())
     {
-- 
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