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2006-03-01 Randolph Chung <tausq@debian.org>

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* hppa-tdep.c (hppa_frame_cache): Handle Region_Description and
	Pseudo_SP_Set in unwind record.
This commit is contained in:
Randolph Chung 2006-03-01 05:22:38 +00:00
parent 477e69e8fd
commit 46acf08120
2 changed files with 23 additions and 5 deletions
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5
gdb/ChangeLog
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@ -1,3 +1,8 @@
2006-03-01 Randolph Chung <tausq@debian.org>
* hppa-tdep.c (hppa_frame_cache): Handle Region_Description and
Pseudo_SP_Set in unwind record.
2006-03-01 Randolph Chung <tausq@debian.org>
* hppa-hpux-tdep.c (initialize_hp_cxx_exception_support): Use

23
gdb/hppa-tdep.c
View File

@ -1857,7 +1857,7 @@ hppa_frame_cache (struct frame_info *next_frame, void **this_cache)
GCC code. */
{
int final_iteration = 0;
CORE_ADDR pc, end_pc;
CORE_ADDR pc, start_pc, end_pc;
int looking_for_sp = u->Save_SP;
int looking_for_rp = u->Save_RP;
int fp_loc = -1;
@ -1877,9 +1877,19 @@ hppa_frame_cache (struct frame_info *next_frame, void **this_cache)
/* We used to use frame_func_unwind () to locate the beginning of the
function to pass to skip_prologue (). However, when objects are
compiled without debug symbols, frame_func_unwind can return the wrong
function (or 0). We can do better than that by using unwind records. */
function (or 0). We can do better than that by using unwind records.
This only works if the Region_description of the unwind record
indicates that it includes the entry point of the function.
HP compilers sometimes generate unwind records for regions that
do not include the entry or exit point of a function. GNU tools
do not do this. */
prologue_end = skip_prologue_hard_way (u->region_start, 0);
if ((u->Region_description & 0x2) == 0)
start_pc = u->region_start;
else
start_pc = frame_func_unwind (next_frame);
prologue_end = skip_prologue_hard_way (start_pc, 0);
end_pc = frame_pc_unwind (next_frame);
if (prologue_end != 0 && end_pc > prologue_end)
@ -1887,7 +1897,7 @@ hppa_frame_cache (struct frame_info *next_frame, void **this_cache)
frame_size = 0;
for (pc = u->region_start;
for (pc = start_pc;
((saved_gr_mask || saved_fr_mask
|| looking_for_sp || looking_for_rp
|| frame_size < (u->Total_frame_size << 3))
@ -2054,9 +2064,12 @@ hppa_frame_cache (struct frame_info *next_frame, void **this_cache)
instead of Save_SP. */
fp = frame_unwind_register_unsigned (next_frame, HPPA_FP_REGNUM);
if (u->Pseudo_SP_Set)
fp -= u->Total_frame_size << 3;
if (frame_pc_unwind (next_frame) >= prologue_end
&& u->Save_SP && fp != 0)
&& (u->Save_SP || u->Pseudo_SP_Set) && fp != 0)
{
cache->base = fp;