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* mips-tdep.c (mips_stub_frame_cache): Correct the saved return

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address register.  Correct the call to frame_id_build.
	(mips_stub_frame_sniffer): Use the stub unwinder when the PC
	is invalid.
This commit is contained in:
Daniel Jacobowitz 2007-09-19 14:45:39 +00:00
parent fd462a6189
commit aa6c981f95
2 changed files with 15 additions and 2 deletions
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7
gdb/ChangeLog
View file

@ -1,3 +1,10 @@
2007-09-19 Daniel Jacobowitz <dan@codesourcery.com>
* mips-tdep.c (mips_stub_frame_cache): Correct the saved return
address register. Correct the call to frame_id_build.
(mips_stub_frame_sniffer): Use the stub unwinder when the PC
is invalid.
2007-09-18 Joel Brobecker <brobecker@adacore.com> 2007-09-18 Joel Brobecker <brobecker@adacore.com>
* ia64-tdep.c (refine_prologue_limit): Make sure we don't scan * ia64-tdep.c (refine_prologue_limit): Make sure we don't scan

10
gdb/mips-tdep.c
View file

@ -2174,14 +2174,15 @@ mips_stub_frame_cache (struct frame_info *next_frame, void **this_cache)
/* The return address is in the link register. */ /* The return address is in the link register. */
trad_frame_set_reg_realreg (this_trad_cache, trad_frame_set_reg_realreg (this_trad_cache,
gdbarch_pc_regnum (current_gdbarch), gdbarch_pc_regnum (current_gdbarch),
MIPS_RA_REGNUM); (gdbarch_num_regs (current_gdbarch)
+ MIPS_RA_REGNUM));
/* Frame ID, since it's a frameless / stackless function, no stack /* Frame ID, since it's a frameless / stackless function, no stack
space is allocated and SP on entry is the current SP. */ space is allocated and SP on entry is the current SP. */
pc = frame_pc_unwind (next_frame); pc = frame_pc_unwind (next_frame);
find_pc_partial_function (pc, NULL, &start_addr, NULL); find_pc_partial_function (pc, NULL, &start_addr, NULL);
stack_addr = frame_unwind_register_signed (next_frame, MIPS_SP_REGNUM); stack_addr = frame_unwind_register_signed (next_frame, MIPS_SP_REGNUM);
trad_frame_set_id (this_trad_cache, frame_id_build (start_addr, stack_addr)); trad_frame_set_id (this_trad_cache, frame_id_build (stack_addr, start_addr));
/* Assume that the frame's base is the same as the /* Assume that the frame's base is the same as the
stack-pointer. */ stack-pointer. */
@ -2222,9 +2223,14 @@ static const struct frame_unwind mips_stub_frame_unwind =
static const struct frame_unwind * static const struct frame_unwind *
mips_stub_frame_sniffer (struct frame_info *next_frame) mips_stub_frame_sniffer (struct frame_info *next_frame)
{ {
gdb_byte dummy[4];
struct obj_section *s; struct obj_section *s;
CORE_ADDR pc = frame_unwind_address_in_block (next_frame, NORMAL_FRAME); CORE_ADDR pc = frame_unwind_address_in_block (next_frame, NORMAL_FRAME);
/* Use the stub unwinder for unreadable code. */
if (target_read_memory (frame_pc_unwind (next_frame), dummy, 4) != 0)
return &mips_stub_frame_unwind;
if (in_plt_section (pc, NULL)) if (in_plt_section (pc, NULL))
return &mips_stub_frame_unwind; return &mips_stub_frame_unwind;