gdb/gdb-6.3-ppcdotsolib-20041022.patch

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2004-12-02 17:44:10 +00:00
2004-10-22 Andrew Cagney <cagney@gnu.org>
* solib-svr4.c (enable_break): Convert a symbol descriptor into
the corresponding function entry point.
(solib_break_names): Delete "._dl_debug_state", no longer needed.
*** ./gdb/solib-svr4.c.dist Fri Oct 22 11:50:31 2004
--- ./gdb/solib-svr4.c Fri Oct 22 11:53:19 2004
***************
*** 86,102 ****
"_dl_debug_state",
"rtld_db_dlactivity",
"_rtld_debug_state",
-
- /* On the 64-bit PowerPC, the linker symbol with the same name as
- the C function points to a function descriptor, not to the entry
- point. The linker symbol whose name is the C function name
- prefixed with a '.' points to the function's entry point. So
- when we look through this table, we ignore symbols that point
- into the data section (thus skipping the descriptor's symbol),
- and eventually try this one, giving us the real entry point
- address. */
- "._dl_debug_state",
-
NULL
};
--- 86,91 ----
***************
*** 1284,1301 ****
/* Now try to set a breakpoint in the dynamic linker. */
for (bkpt_namep = solib_break_names; *bkpt_namep != NULL; 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;
}
/* We're done with both the temporary bfd and target. Remember,
--- 1273,1289 ----
/* 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, 0);
if (sym_addr != 0)
! {
! /* The symbol might be a descriptor, convert to into the
! corresponding code address. */
! sym_addr = gdbarch_convert_from_func_ptr_addr (current_gdbarch,
! sym_addr,
! tmp_bfd_target);
! if (sym_addr != 0)
! break;
! }
}
/* We're done with both the temporary bfd and target. Remember,