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* rs6000-tdep.c: Delete unused function print_frame.

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* frame.h (struct frame_info): Doc fix for next_frame.
	New field signal_handler_caller.
	blockframe.c (create_new_frame, get_prev_frame_info),
	config/rs6000/tm-rs6000.h (INIT_EXTRA_FRAME_INFO): Set it (needs
	INIT_FRAME_PC_FIRST).
	stack.c (print_frame_info), rs6000-tdep.c (rs6000_frame_chain):
	Check it.
This commit is contained in:
Jim Kingdon 1993-04-20 18:02:54 +00:00
parent 01f5a1f825
commit cee86be37f
3 changed files with 25 additions and 22 deletions
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12
gdb/ChangeLog
View File

@ -1,3 +1,15 @@
Tue Apr 20 08:55:11 1993 Jim Kingdon (kingdon@cygnus.com)
* rs6000-tdep.c: Delete unused function print_frame.
* frame.h (struct frame_info): Doc fix for next_frame.
New field signal_handler_caller.
blockframe.c (create_new_frame, get_prev_frame_info),
config/rs6000/tm-rs6000.h (INIT_EXTRA_FRAME_INFO): Set it (needs
INIT_FRAME_PC_FIRST).
stack.c (print_frame_info), rs6000-tdep.c (rs6000_frame_chain):
Check it.
Mon Apr 19 22:52:33 1993 Stu Grossman (grossman@cygnus.com)
* irix4-nat.c (fetch_core_registers): Special version of this for

26
gdb/rs6000-tdep.c
View File

@ -892,23 +892,6 @@ extract_return_value (valtype, regbuf, valbuf)
CORE_ADDR rs6000_struct_return_address;
/* Throw away this debugging code. FIXMEmgo. */
void
print_frame(fram)
int fram;
{
int ii, val;
for (ii=0; ii<40; ++ii) {
if ((ii % 4) == 0)
printf ("\n");
val = read_memory_integer (fram + ii * 4, 4);
printf ("0x%08x\t", val);
}
printf ("\n");
}
/* Indirect function calls use a piece of trampoline code to do context
switching, i.e. to set the new TOC table. Skip such code if we are on
its first instruction (as when we have single-stepped to here).
@ -1098,12 +1081,8 @@ rs6000_frame_chain (thisframe)
FRAME_ADDR fp;
if (inside_entry_file ((thisframe)->pc))
return 0;
fp = read_memory_integer ((thisframe)->frame, 4);
if (fp == 0 && thisframe->pc < TEXT_SEGMENT_BASE)
if (thisframe->signal_handler_caller)
{
/* If we are doing a backtrace from a signal handler, fp will be 0
and thisframe->pc will be something like 0x3f88 or 0x2790. */
/* This was determined by experimentation on AIX 3.2. Perhaps
it corresponds to some offset in /usr/include/sys/user.h or
something like that. Using some system include file would
@ -1114,6 +1093,9 @@ rs6000_frame_chain (thisframe)
#define SIG_FRAME_FP_OFFSET 284
fp = read_memory_integer (thisframe->frame + SIG_FRAME_FP_OFFSET, 4);
}
else
fp = read_memory_integer ((thisframe)->frame, 4);
return fp;
}

9
gdb/stack.c
View File

@ -152,6 +152,15 @@ print_frame_info (fi, level, source, args)
printf_filtered ("<function called from gdb>\n");
return;
}
if (fi->signal_handler_caller)
{
/* Do this regardless of SOURCE because we don't have any source
to list for this frame. */
if (level >= 0)
printf_filtered ("#%-2d ", level);
printf_filtered ("<signal handler called>\n");
return;
}
sal = find_pc_line (fi->pc, fi->next_frame);
func = find_pc_function (fi->pc);