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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
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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
mean that the region behaves exactly like the first RLEN
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
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;
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));
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_len = orig_sr.region_len;
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->when_target = orig_sr.when_target;
for (i = 0; i < IA64_NUM_PREGS; ++i)
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);
sr->labeled_states = orig_sr.labeled_states;