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* sparc-tdep.c (sparc_frame_cache): Don't bail out if %fp is zero.

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Reorganize code a bit.
This commit is contained in:
Mark Kettenis 2004-03-04 10:10:33 +00:00
parent b4206d25f7
commit cbeae229a5
2 changed files with 17 additions and 12 deletions
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5
gdb/ChangeLog
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@ -1,3 +1,8 @@
2004-03-04 Mark Kettenis <kettenis@gnu.org>
* sparc-tdep.c (sparc_frame_cache): Don't bail out if %fp is zero.
Reorganize code a bit.
2004-03-04 Orjan Friberg <orjanf@axis.com> 2004-03-04 Orjan Friberg <orjanf@axis.com>
* cris-tdep.c (cris_scan_prologue): Save the frame pointer's offset * cris-tdep.c (cris_scan_prologue): Save the frame pointer's offset

24
gdb/sparc-tdep.c
View file

@ -615,14 +615,6 @@ sparc_frame_cache (struct frame_info *next_frame, void **this_cache)
cache = sparc_alloc_frame_cache (); cache = sparc_alloc_frame_cache ();
*this_cache = cache; *this_cache = cache;
/* In priciple, for normal frames, %fp (%i6) holds the frame
pointer, which holds the base address for the current stack
frame. */
cache->base = frame_unwind_register_unsigned (next_frame, SPARC_FP_REGNUM);
if (cache->base == 0)
return cache;
cache->pc = frame_func_unwind (next_frame); cache->pc = frame_func_unwind (next_frame);
if (cache->pc != 0) if (cache->pc != 0)
{ {
@ -632,10 +624,18 @@ sparc_frame_cache (struct frame_info *next_frame, void **this_cache)
if (cache->frameless_p) if (cache->frameless_p)
{ {
/* We didn't find a valid frame, which means that CACHE->base /* This function is frameless, so %fp (%i6) holds the frame
currently holds the frame pointer for our calling frame. */ pointer for our calling frame. Use %sp (%o6) as this frame's
cache->base = frame_unwind_register_unsigned (next_frame, base address. */
SPARC_SP_REGNUM); cache->base =
frame_unwind_register_unsigned (next_frame, SPARC_SP_REGNUM);
}
else
{
/* For normal frames, %fp (%i6) holds the frame pointer, the
base address for the current stack frame. */
cache->base =
frame_unwind_register_unsigned (next_frame, SPARC_FP_REGNUM);
} }
return cache; return cache;