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2008-02-20 Markus Deuling <deuling@de.ibm.com>

Browse Source 
Mark Kettenis  <kettenis@gnu.org>

	* alpha-tdep.c (alpha_heuristic_unwind_cache): Replace saved_regs by
	trad_frame_saved_reg.
	(trad-frame.h): New include.

	(alpha_heuristic_frame_unwind_cache): Use trad_frame_alloc_saved_regs
	instead of frame_obstack_zalloc.
	(alpha_heuristic_frame_prev_register): Use trad_frame_get_prev_register.

	* Makefile.in (alpha-tdep.o): Add dependency to trad_frame_h.
This commit is contained in:
Markus Deuling 2008-02-20 15:45:20 +00:00
parent 845b51d665
commit 07ea644b36
3 changed files with 33 additions and 49 deletions
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13
gdb/ChangeLog
View File

@ -1,3 +1,16 @@
2008-02-20 Markus Deuling <deuling@de.ibm.com>
Mark Kettenis <kettenis@gnu.org>
* alpha-tdep.c (alpha_heuristic_unwind_cache): Replace saved_regs by
trad_frame_saved_reg.
(trad-frame.h): New include.
(alpha_heuristic_frame_unwind_cache): Use trad_frame_alloc_saved_regs
instead of frame_obstack_zalloc.
(alpha_heuristic_frame_prev_register): Use trad_frame_get_prev_register.
* Makefile.in (alpha-tdep.o): Add dependency to trad_frame_h.
2008-02-20 Markus Deuling <deuling@de.ibm.com>
* rs6000-tdep.c (gdb_print_insn_powerpc): Get the current endianess

2
gdb/Makefile.in
View File

@ -1847,7 +1847,7 @@ alpha-tdep.o: alpha-tdep.c $(defs_h) $(doublest_h) $(frame_h) \
$(symtab_h) $(value_h) $(gdbcmd_h) $(gdbcore_h) $(dis_asm_h) \
$(symfile_h) $(objfiles_h) $(gdb_string_h) $(linespec_h) \
$(regcache_h) $(reggroups_h) $(arch_utils_h) $(osabi_h) $(block_h) \
$(infcall_h) $(elf_bfd_h) $(alpha_tdep_h)
$(infcall_h) $(elf_bfd_h) $(alpha_tdep_h) $(trad_frame_h)
amd64bsd-nat.o: amd64bsd-nat.c $(defs_h) $(inferior_h) $(regcache_h) \
$(target_h) $(gdb_assert_h) $(amd64_tdep_h) $(amd64_nat_h) \
$(inf_ptrace_h)

67
gdb/alpha-tdep.c
View File

@ -40,6 +40,7 @@
#include "osabi.h"
#include "block.h"
#include "infcall.h"
#include "trad-frame.h"
#include "elf-bfd.h"
@ -900,16 +901,6 @@ alpha_sigtramp_frame_sniffer (struct frame_info *next_frame)
return NULL;
}
/* Fallback alpha frame unwinder. Uses instruction scanning and knows
something about the traditional layout of alpha stack frames. */
struct alpha_heuristic_unwind_cache
{
CORE_ADDR *saved_regs;
CORE_ADDR vfp;
CORE_ADDR start_pc;
int return_reg;
};
/* Heuristic_proc_start may hunt through the text section for a long
time across a 2400 baud serial line. Allows the user to limit this
@ -996,6 +987,17 @@ Otherwise, you told GDB there was a function where there isn't one, or\n\
return 0;
}
/* Fallback alpha frame unwinder. Uses instruction scanning and knows
something about the traditional layout of alpha stack frames. */
struct alpha_heuristic_unwind_cache
{
CORE_ADDR vfp;
CORE_ADDR start_pc;
struct trad_frame_saved_reg *saved_regs;
int return_reg;
};
static struct alpha_heuristic_unwind_cache *
alpha_heuristic_frame_unwind_cache (struct frame_info *next_frame,
void **this_prologue_cache,
@ -1012,7 +1014,7 @@ alpha_heuristic_frame_unwind_cache (struct frame_info *next_frame,
info = FRAME_OBSTACK_ZALLOC (struct alpha_heuristic_unwind_cache);
*this_prologue_cache = info;
info->saved_regs = frame_obstack_zalloc (SIZEOF_FRAME_SAVED_REGS);
info->saved_regs = trad_frame_alloc_saved_regs (next_frame);
limit_pc = frame_pc_unwind (next_frame);
if (start_pc == 0)
@ -1062,7 +1064,7 @@ alpha_heuristic_frame_unwind_cache (struct frame_info *next_frame,
All it says is that the function we are scanning reused
that register for some computation of its own, and is now
saving its result. */
if (info->saved_regs[reg])
if (trad_frame_addr_p(info->saved_regs, reg))
continue;
if (reg == 31)
@ -1078,7 +1080,7 @@ alpha_heuristic_frame_unwind_cache (struct frame_info *next_frame,
pointer or not. */
/* Hack: temporarily add one, so that the offset is non-zero
and we can tell which registers have save offsets below. */
info->saved_regs[reg] = (word & 0xffff) + 1;
info->saved_regs[reg].addr = (word & 0xffff) + 1;
/* Starting with OSF/1-3.2C, the system libraries are shipped
without local symbols, but they still contain procedure
@ -1155,8 +1157,8 @@ alpha_heuristic_frame_unwind_cache (struct frame_info *next_frame,
/* Convert offsets to absolute addresses. See above about adding
one to the offsets to make all detected offsets non-zero. */
for (reg = 0; reg < ALPHA_NUM_REGS; ++reg)
if (info->saved_regs[reg])
info->saved_regs[reg] += val - 1;
if (trad_frame_addr_p(info->saved_regs, reg))
info->saved_regs[reg].addr += val - 1;
return info;
}
@ -1193,39 +1195,8 @@ alpha_heuristic_frame_prev_register (struct frame_info *next_frame,
if (regnum == ALPHA_PC_REGNUM)
regnum = info->return_reg;
/* For all registers known to be saved in the current frame,
do the obvious and pull the value out. */
if (info->saved_regs[regnum])
{
*optimizedp = 0;
*lvalp = lval_memory;
*addrp = info->saved_regs[regnum];
*realnump = -1;
if (bufferp != NULL)
get_frame_memory (next_frame, *addrp, bufferp, ALPHA_REGISTER_SIZE);
return;
}
/* The stack pointer of the previous frame is computed by popping
the current stack frame. */
if (regnum == ALPHA_SP_REGNUM)
{
*optimizedp = 0;
*lvalp = not_lval;
*addrp = 0;
*realnump = -1;
if (bufferp != NULL)
store_unsigned_integer (bufferp, ALPHA_REGISTER_SIZE, info->vfp);
return;
}
/* Otherwise assume the next frame has the same register value. */
*optimizedp = 0;
*lvalp = lval_register;
*addrp = 0;
*realnump = regnum;
if (bufferp)
frame_unwind_register (next_frame, *realnump, bufferp);
trad_frame_get_prev_register (next_frame, info->saved_regs, regnum,
optimizedp, lvalp, addrp, realnump, bufferp);
}
static const struct frame_unwind alpha_heuristic_frame_unwind = {