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2003-11-14 Andrew Cagney <cagney@redhat.com>

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* Makefile.in (ppc-sysv-tdep.o): Update dependencies.
	* ppc-sysv-tdep.c: Include "objfiles.h".
	(ppc64_sysv_abi_push_dummy_call): Provide the
	the FN's objfile when looking for the descriptor.
This commit is contained in:
Andrew Cagney 2003-11-14 14:34:30 +00:00
parent 9ea97f2aa0
commit 0a90bcdd1e
2 changed files with 32 additions and 15 deletions
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7
gdb/ChangeLog
View file

@ -1,4 +1,9 @@
2003-11-13 Andrew Cagney <cagney@redhat.com>
2003-11-14 Andrew Cagney <cagney@redhat.com>
* Makefile.in (ppc-sysv-tdep.o): Update dependencies.
* ppc-sysv-tdep.c: Include "objfiles.h".
(ppc64_sysv_abi_push_dummy_call): Provide the
the FN's objfile when looking for the descriptor.
* ppc-linux-tdep.c (ppc_linux_init_abi): Set PPC64's
"name_of_malloc" to ".malloc".

40
gdb/ppc-sysv-tdep.c
View file

@ -29,6 +29,7 @@
#include "gdb_assert.h"
#include "ppc-tdep.h"
#include "target.h"
#include "objfiles.h"
/* Pass the arguments in either registers, or in the stack. Using the
ppc sysv ABI, the first eight words of the argument list (that might
@ -790,27 +791,38 @@ ppc64_sysv_abi_push_dummy_call (struct gdbarch *gdbarch, CORE_ADDR func_addr,
".FN" and "FN" in the minimal symbol table. "FN" points at the
FN's descriptor, while ".FN" points at the entry point (which
matches FUNC_ADDR). Need to reverse from FUNC_ADDR back to the
FN's descriptor address. */
FN's descriptor address (while at the same time being careful to
find "FN" in the same object file as ".FN"). */
{
/* Find the minimal symbol that corresponds to FUNC_ADDR (should
have the name ".FN"). */
struct minimal_symbol *dot_fn = lookup_minimal_symbol_by_pc (func_addr);
if (dot_fn != NULL && SYMBOL_LINKAGE_NAME (dot_fn)[0] == '.')
{
/* Now find the corresponding "FN" (dropping ".") minimal
symbol's address. */
struct minimal_symbol *fn =
lookup_minimal_symbol (SYMBOL_LINKAGE_NAME (dot_fn) + 1, NULL,
NULL);
if (fn != NULL)
/* Get the section that contains FUNC_ADR. Need this for the
"objfile" that it contains. */
struct obj_section *dot_fn_section = find_pc_section (func_addr);
if (dot_fn_section != NULL && dot_fn_section->objfile != NULL)
{
/* Got the address of that descriptor. The TOC is the
second double word. */
CORE_ADDR toc =
read_memory_unsigned_integer (SYMBOL_VALUE_ADDRESS (fn) +
tdep->wordsize, tdep->wordsize);
regcache_cooked_write_unsigned (regcache,
tdep->ppc_gp0_regnum + 2, toc);
/* Now find the corresponding "FN" (dropping ".") minimal
symbol's address. Only look for the minimal symbol in
".FN"'s object file - avoids problems when two object
files (i.e., shared libraries) contain a minimal symbol
with the same name. */
struct minimal_symbol *fn =
lookup_minimal_symbol (SYMBOL_LINKAGE_NAME (dot_fn) + 1, NULL,
dot_fn_section->objfile);
if (fn != NULL)
{
/* Got the address of that descriptor. The TOC is the
second double word. */
CORE_ADDR toc =
read_memory_unsigned_integer (SYMBOL_VALUE_ADDRESS (fn)
+ tdep->wordsize,
tdep->wordsize);
regcache_cooked_write_unsigned (regcache,
tdep->ppc_gp0_regnum + 2, toc);
}
}
}
}