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Rename "epilogue_start" to "when_sp_restored".

Browse source 
(parse_dynamic): Fix it so it actually works.
(create_state_record_for): Initialize return_link_reg to zero.
	Don't print "no unwind info" unconditionally when UNW_DEBUG is
	in effect.

(Logical change 1.56)
This commit is contained in:
mostang.com!davidm 2003-02-27 09:58:57 +00:00
parent 26f95915e4
commit d6a0aa7059
1 changed files with 22 additions and 16 deletions
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32
src/ia64/Gparser-ia64.c
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@ -287,7 +287,7 @@ desc_prologue (int body, unw_word rlen, unsigned char mask,
for (i = 0; i < sr->epilogue_count; ++i)
pop (sr);
sr->epilogue_count = 0;
sr->epilogue_start = IA64_WHEN_NEVER;
sr->when_sp_restored = IA64_WHEN_NEVER;
sr->region_start = region_start;
sr->region_len = rlen;
@ -507,7 +507,7 @@ desc_spill_mask (unsigned char *imaskp, struct ia64_state_record *sr)
static inline void
desc_epilogue (unw_word t, unw_word ecount, struct ia64_state_record *sr)
{
sr->epilogue_start = sr->region_start + sr->region_len - 1 - t;
sr->when_sp_restored = sr->region_start + sr->region_len - 1 - t;
sr->epilogue_count = ecount + 1;
}
@ -749,7 +749,7 @@ lookup_preg (int regnum, int memory, struct ia64_state_record *sr)
return sr->curr.reg + preg;
}
static int
static inline int
parse_dynamic (struct cursor *c, struct ia64_state_record *sr)
{
unw_dyn_info_t *di = c->pi.unwind_info;
@ -782,7 +782,10 @@ parse_dynamic (struct cursor *c, struct ia64_state_record *sr)
/* all regions are treated as prologue regions: */
desc_prologue (0, len, 0, 0, sr);
for (op = r->op; 1; ++op)
if (sr->done)
return 0;
for (op = r->op; op < r->op + r->op_count; ++op)
{
when = op->when;
val = op->val;
@ -791,6 +794,8 @@ parse_dynamic (struct cursor *c, struct ia64_state_record *sr)
if (!desc_is_active (qp, when, sr))
continue;
when = sr->region_start + MIN ((int) when, sr->region_len - 1);
switch (op->tag)
{
case UNW_DYN_SAVE_REG:
@ -820,6 +825,7 @@ parse_dynamic (struct cursor *c, struct ia64_state_record *sr)
case UNW_DYN_SPILL_FP_REL:
memory = 1;
where = IA64_WHERE_PSPREL;
val = 0x10 - val;
goto update_reg_info;
case UNW_DYN_SPILL_SP_REL:
@ -837,6 +843,7 @@ parse_dynamic (struct cursor *c, struct ia64_state_record *sr)
__FUNCTION__, (long) op->val);
return -UNW_EINVAL;
}
desc_mem_stack_f (when, -((int64_t) val / 16), sr);
}
else
{
@ -847,17 +854,16 @@ parse_dynamic (struct cursor *c, struct ia64_state_record *sr)
break;
case UNW_DYN_POP_FRAMES:
sr->epilogue_start
= sr->region_start + sr->region_len - 1 - op->when;
sr->when_sp_restored = when;
sr->epilogue_count = op->val;
break;
case UNW_DYN_LABEL_STATE:
desc_label_state(op->val, sr);
desc_label_state (op->val, sr);
break;
case UNW_DYN_COPY_STATE:
desc_copy_state(op->val, sr);
desc_copy_state (op->val, sr);
break;
case UNW_DYN_ALIAS:
@ -871,10 +877,9 @@ parse_dynamic (struct cursor *c, struct ia64_state_record *sr)
goto end_of_ops;
}
}
}
while (!sr->done);
end_of_ops:
;
}
return 0;
}
@ -928,6 +933,7 @@ create_state_record_for (struct cursor *c, struct ia64_state_record *sr,
r->when = IA64_WHEN_NEVER;
sr->pr_val = predicates;
sr->first_region = 1;
sr->return_link_reg = 0;
ret = get_proc_info (c, ip, 1);
if (ret < 0)
@ -937,7 +943,7 @@ create_state_record_for (struct cursor *c, struct ia64_state_record *sr,
{
/* No info, return default unwinder (leaf proc, no mem stack, no
saved regs), rp in b0, pfs in ar.pfs. */
dprintf ("unwind.parser: no unwind info for ip=0x%lx (gp=%lx)\n",
debug (1, "unwind.parser: no unwind info for ip=0x%lx (gp=%lx)\n",
(long) ip, (long) c->pi.gp);
sr->curr.reg[IA64_REG_RP].where = IA64_WHERE_BR;
sr->curr.reg[IA64_REG_RP].when = -1;
@ -963,7 +969,7 @@ create_state_record_for (struct cursor *c, struct ia64_state_record *sr,
if (ret < 0)
return ret;
if (sr->when_target > sr->epilogue_start)
if (sr->when_target > sr->when_sp_restored)
{
/* sp has been restored and all values on the memory stack below
psp also have been restored. */