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(desc_alias): Fix off-by-one bug.

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(Logical change 1.287)
This commit is contained in:
hp.com!davidm 2005-04-20 21:01:22 +00:00
parent 5302bf4828
commit 8efd6d24da
1 changed files with 5 additions and 4 deletions

9
src/ia64/Gparser.c
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@ -747,7 +747,8 @@ lookup_preg (int regnum, int memory, struct ia64_state_record *sr)
/* An alias directive inside a region of length RLEN is interpreted to /* An alias directive inside a region of length RLEN is interpreted to
mean that the region behaves exactly like the first RLEN mean that the region behaves exactly like the first RLEN
instructions at the aliased IP. RLEN=0 implies that the current instructions at the aliased IP. RLEN=0 implies that the current
state matches exactly that of the aliased IP. */ state matches exactly that of before the instruction at the aliased
IP is executed. */
static int static int
desc_alias (unw_dyn_op_t *op, struct cursor *c, struct ia64_state_record *sr) desc_alias (unw_dyn_op_t *op, struct cursor *c, struct ia64_state_record *sr)
@ -756,7 +757,7 @@ desc_alias (unw_dyn_op_t *op, struct cursor *c, struct ia64_state_record *sr)
int i, ret, when, rlen = sr->region_len; int i, ret, when, rlen = sr->region_len;
unw_word_t new_ip; unw_word_t new_ip;
when = MIN(sr->when_target, rlen - 1); when = MIN (sr->when_target, rlen);
new_ip = op->val + ((when / 3) * 16 + (when % 3)); new_ip = op->val + ((when / 3) * 16 + (when % 3));
if ((ret = ia64_fetch_proc_info (c, new_ip, 1)) < 0) if ((ret = ia64_fetch_proc_info (c, new_ip, 1)) < 0)
@ -772,13 +773,13 @@ desc_alias (unw_dyn_op_t *op, struct cursor *c, struct ia64_state_record *sr)
sr->region_start = orig_sr.region_start; sr->region_start = orig_sr.region_start;
sr->region_len = orig_sr.region_len; sr->region_len = orig_sr.region_len;
if (sr->when_sp_restored != IA64_WHEN_NEVER) if (sr->when_sp_restored != IA64_WHEN_NEVER)
sr->when_sp_restored = op->when + MIN (orig_sr.when_sp_restored, rlen - 1); sr->when_sp_restored = op->when + MIN (orig_sr.when_sp_restored, rlen);
sr->epilogue_count = orig_sr.epilogue_count; sr->epilogue_count = orig_sr.epilogue_count;
sr->when_target = orig_sr.when_target; sr->when_target = orig_sr.when_target;
for (i = 0; i < IA64_NUM_PREGS; ++i) for (i = 0; i < IA64_NUM_PREGS; ++i)
if (sr->curr.reg[i].when != IA64_WHEN_NEVER) if (sr->curr.reg[i].when != IA64_WHEN_NEVER)
sr->curr.reg[i].when = op->when + MIN (sr->curr.reg[i].when, rlen - 1); sr->curr.reg[i].when = op->when + MIN (sr->curr.reg[i].when, rlen);
ia64_free_state_record (sr); ia64_free_state_record (sr);
sr->labeled_states = orig_sr.labeled_states; sr->labeled_states = orig_sr.labeled_states;