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* solib-svr4.c (bfd_lookup_symbol): New SECT_FLAGS argument.

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(enable_break): Pass SEC_CODE as the SECT_FLAGS argument to
bfd_lookup_symbol, since we only want symbols in code sections.
(look_for_base): Pass zero as the SECT_FLAGS argument to
bfd_lookup_symbol, since we're not concerned about which section
the symbol is in.
This commit is contained in:
Jim Blandy 2003-08-26 23:35:19 +00:00
parent 102d615a7c
commit 87f84c9d11
2 changed files with 31 additions and 7 deletions
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9
gdb/ChangeLog
View File

@ -1,3 +1,12 @@
2003-08-26 Jim Blandy <jimb@redhat.com>
* solib-svr4.c (bfd_lookup_symbol): New SECT_FLAGS argument.
(enable_break): Pass SEC_CODE as the SECT_FLAGS argument to
bfd_lookup_symbol, since we only want symbols in code sections.
(look_for_base): Pass zero as the SECT_FLAGS argument to
bfd_lookup_symbol, since we're not concerned about which section
the symbol is in.
2003-08-26 Jeff Johnston <jjohnstn@redhat.com>
* ia64-tdep.c (examine_prologue): Only stop at predicated insns if

29
gdb/solib-svr4.c
View File

@ -177,7 +177,7 @@ static CORE_ADDR breakpoint_addr; /* Address where end bkpt is set */
static int match_main (char *);
static CORE_ADDR bfd_lookup_symbol (bfd *, char *);
static CORE_ADDR bfd_lookup_symbol (bfd *, char *, flagword);
/*
@ -187,7 +187,7 @@ static CORE_ADDR bfd_lookup_symbol (bfd *, char *);
SYNOPSIS
CORE_ADDR bfd_lookup_symbol (bfd *abfd, char *symname)
CORE_ADDR bfd_lookup_symbol (bfd *abfd, char *symname, flagword sect_flags)
DESCRIPTION
@ -196,12 +196,15 @@ static CORE_ADDR bfd_lookup_symbol (bfd *, char *);
shared library support to find the address of the debugger
interface structures in the shared library.
If SECT_FLAGS is non-zero, only match symbols in sections whose
flags include all those in SECT_FLAGS.
Note that 0 is specifically allowed as an error return (no
such symbol).
*/
static CORE_ADDR
bfd_lookup_symbol (bfd *abfd, char *symname)
bfd_lookup_symbol (bfd *abfd, char *symname, flagword sect_flags)
{
long storage_needed;
asymbol *sym;
@ -222,7 +225,8 @@ bfd_lookup_symbol (bfd *abfd, char *symname)
for (i = 0; i < number_of_symbols; i++)
{
sym = *symbol_table++;
if (STREQ (sym->name, symname))
if (STREQ (sym->name, symname)
&& (sym->section->flags & sect_flags) == sect_flags)
{
/* Bfd symbols are section relative. */
symaddr = sym->value + sym->section->vma;
@ -249,7 +253,9 @@ bfd_lookup_symbol (bfd *abfd, char *symname)
for (i = 0; i < number_of_symbols; i++)
{
sym = *symbol_table++;
if (STREQ (sym->name, symname))
if (STREQ (sym->name, symname)
&& (sym->section->flags & sect_flags) == sect_flags)
{
/* Bfd symbols are section relative. */
symaddr = sym->value + sym->section->vma;
@ -355,7 +361,7 @@ look_for_base (int fd, CORE_ADDR baseaddr)
for (symbolp = debug_base_symbols; *symbolp != NULL; symbolp++)
{
address = bfd_lookup_symbol (interp_bfd, *symbolp);
address = bfd_lookup_symbol (interp_bfd, *symbolp, 0);
if (address != 0)
{
break;
@ -1060,7 +1066,16 @@ enable_break (void)
/* Now try to set a breakpoint in the dynamic linker. */
for (bkpt_namep = solib_break_names; *bkpt_namep != NULL; bkpt_namep++)
{
sym_addr = bfd_lookup_symbol (tmp_bfd, *bkpt_namep);
/* On ABI's that use function descriptors, there are usually
two linker symbols associated with each C function: one
pointing at the actual entry point of the machine code,
and one pointing at the function's descriptor. The
latter symbol has the same name as the C function.
What we're looking for here is the machine code entry
point, so we are only interested in symbols in code
sections. */
sym_addr = bfd_lookup_symbol (tmp_bfd, *bkpt_namep, SEC_CODE);
if (sym_addr != 0)
break;
}