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dwarf: fix unw_get_proc_info
unw_get_proc_info must always load the unwind info so that unw_resume
works with GNU_args_size expressions, but must not update
use_prev_expr unless we are unw_step()ing.
blame rev: 4b63a536ee
reported-by: Doug Moore <dougm@rice.edu>
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parent
ab868ece1a
commit
aee8bbe795
1 changed files with 4 additions and 7 deletions
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@ -430,18 +430,15 @@ fetch_proc_info (struct dwarf_cursor *c, unw_word_t ip, int need_unwind_info)
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if (c->use_prev_instr)
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--ip;
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if (c->pi_valid && !need_unwind_info)
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return 0;
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memset (&c->pi, 0, sizeof (c->pi));
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/* check dynamic info first --- it overrides everything else */
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ret = unwi_find_dynamic_proc_info (c->as, ip, &c->pi, need_unwind_info,
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ret = unwi_find_dynamic_proc_info (c->as, ip, &c->pi, 1,
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c->as_arg);
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if (ret == -UNW_ENOINFO)
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{
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dynamic = 0;
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if ((ret = tdep_find_proc_info (c, ip, need_unwind_info)) < 0)
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if ((ret = tdep_find_proc_info (c, ip, 1)) < 0)
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return ret;
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}
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@ -455,7 +452,7 @@ fetch_proc_info (struct dwarf_cursor *c, unw_word_t ip, int need_unwind_info)
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/* Let system/machine-dependent code determine frame-specific attributes. */
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if (ret >= 0)
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tdep_fetch_frame (c, ip, need_unwind_info);
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tdep_fetch_frame (c, ip, 1);
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/* Update use_prev_instr for the next frame. */
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if (need_unwind_info)
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@ -962,7 +959,7 @@ dwarf_make_proc_info (struct dwarf_cursor *c)
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int ret;
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/* Lookup it up the slow way... */
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if ((ret = fetch_proc_info (c, c->ip, 1)) < 0)
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if ((ret = fetch_proc_info (c, c->ip, 0)) < 0)
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return ret;
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/* Also need to check if current frame contains
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args_size, and set cursor appropriatly. Only
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