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Unwind across intrframes as well. While here, better handle bottom of

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stack by claiming the frame when the IP is 0. It's a bit of a kluge,
but avoids screens full of bogus frames.

MFC after: 1 week
This commit is contained in:
marcel 2005-09-11 05:55:24 +00:00
parent 5c551253ea
commit afc227eedb
1 changed files with 8 additions and 2 deletions
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10
gnu/usr.bin/gdb/kgdb/trgt_amd64.c
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@ -150,12 +150,15 @@ kgdb_trgt_trapframe_prev_register(struct frame_info *next_frame,
*lvalp = not_lval;
*realnump = -1;
cache = kgdb_trgt_frame_cache(next_frame, this_cache);
if (cache->pc == 0)
return;
ofs = (regnum >= AMD64_RAX_REGNUM && regnum <= AMD64_EFLAGS_REGNUM + 2)
? kgdb_trgt_frame_offset[regnum] : -1;
if (ofs == -1)
return;
cache = kgdb_trgt_frame_cache(next_frame, this_cache);
*addrp = cache->sp + ofs;
*lvalp = lval_memory;
target_read_memory(*addrp, valuep, regsz);
@ -174,11 +177,14 @@ kgdb_trgt_trapframe_sniffer(struct frame_info *next_frame)
CORE_ADDR pc;
pc = frame_pc_unwind(next_frame);
if (pc == 0)
return (&kgdb_trgt_trapframe_unwind);
pname = NULL;
find_pc_partial_function(pc, &pname, NULL, NULL);
if (pname == NULL)
return (NULL);
if (strcmp(pname, "calltrap") == 0)
if (strcmp(pname, "calltrap") == 0 ||
(pname[0] == 'X' && pname[1] != '_'))
return (&kgdb_trgt_trapframe_unwind);
/* printf("%s: %lx =%s\n", __func__, pc, pname); */
return (NULL);