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In error messages, replace "unwind:" by "libunwind:".
(desc_prologue): Fix handling of region_start so it doesn't get corrupted by state-record pushing/popping. (parse_dynamic): Allow the last region to contain a negative insn_count, indicating that the region covers the last portion of a procedure. (Logical change 1.54)
This commit is contained in:
mostang.com!davidm
parent
a01d77efb8
commit
9d5c1bc580
1 changed files with 34 additions and 16 deletions
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@ -52,7 +52,7 @@ push (struct ia64_state_record *sr)
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rs = alloc_reg_state ();
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if (!rs)
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{
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fprintf (stderr, "unwind: cannot stack reg state!\n");
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fprintf (stderr, "libunwind: cannot stack reg state!\n");
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return;
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}
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memcpy (rs, &sr->curr, sizeof (*rs));
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@ -66,7 +66,7 @@ pop (struct ia64_state_record *sr)
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if (!rs)
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{
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fprintf (stderr, "unwind: stack underflow!\n");
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fprintf (stderr, "libunwind: stack underflow!\n");
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return;
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}
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memcpy (&sr->curr, rs, sizeof (*rs));
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@ -152,7 +152,7 @@ decode_abreg (unsigned char abreg, int memory)
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default:
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break;
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}
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dprintf ("unwind: bad abreg=0x%x\n", abreg);
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dprintf ("libunwind: bad abreg=0x%x\n", abreg);
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return IA64_REG_LC;
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}
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@ -198,7 +198,7 @@ spill_next_when (struct ia64_reg_info **regp, struct ia64_reg_info *lim,
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return;
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}
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}
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dprintf ("unwind: excess spill!\n");
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dprintf ("libunwind: excess spill!\n");
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}
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static inline void
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@ -269,7 +269,7 @@ static void
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desc_prologue (int body, unw_word rlen, unsigned char mask,
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unsigned char grsave, struct ia64_state_record *sr)
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{
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int i;
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int i, region_start;
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if (!(sr->in_body || sr->first_region))
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finish_prologue (sr);
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@ -282,20 +282,21 @@ desc_prologue (int body, unw_word rlen, unsigned char mask,
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return;
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}
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region_start = sr->region_start + sr->region_len;
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for (i = 0; i < sr->epilogue_count; ++i)
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pop (sr);
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sr->epilogue_count = 0;
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sr->epilogue_start = IA64_WHEN_NEVER;
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if (!body)
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push (sr);
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sr->region_start += sr->region_len;
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sr->region_start = region_start;
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sr->region_len = rlen;
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sr->in_body = body;
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if (!body)
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{
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push (sr);
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if (mask)
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for (i = 0; i < 4; ++i)
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{
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@ -320,7 +321,8 @@ desc_abi (unsigned char abi, unsigned char context,
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if (abi == 0 && context == 's')
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sr->is_signal_frame = 1;
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else
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dprintf ("unwind: ignoring unwabi(abi=0x%x,context=0x%x)\n", abi, context);
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dprintf ("libunwind: ignoring unwabi(abi=0x%x,context=0x%x)\n",
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abi, context);
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}
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static inline void
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@ -524,7 +526,7 @@ desc_copy_state (unw_word label, struct ia64_state_record *sr)
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return;
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}
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}
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fprintf (stderr, "unwind: failed to find state labeled 0x%lx\n", label);
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fprintf (stderr, "libunwind: failed to find state labeled 0x%lx\n", label);
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}
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static inline void
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@ -630,7 +632,8 @@ desc_spill_sprel_p (unsigned char qp, unw_word t, unsigned char abreg,
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r->val = 4 * spoff;
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}
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#define UNW_DEC_BAD_CODE(code) fprintf (stderr, "unwind: unknown code 0x%02x\n", code);
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#define UNW_DEC_BAD_CODE(code) \
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fprintf (stderr, "libunwind: unknown code 0x%02x\n", code)
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/* Register names. */
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#define UNW_REG_BSP IA64_REG_BSP
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@ -756,14 +759,28 @@ parse_dynamic (struct cursor *c, struct ia64_state_record *sr)
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unw_word_t val, new_ip;
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enum ia64_where where;
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unw_dyn_op_t *op;
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int32_t when;
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int32_t when, len;
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int8_t qp;
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int memory;
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for (r = proc->regions; r; r = r->next)
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{
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len = r->insn_count;
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if (len < 0)
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{
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if (r->next)
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{
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debug (10, "libunwind: negative region length allowed in last "
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"region only!");
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return -UNW_EINVAL;
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}
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len = -len;
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/* hack old region info to set the start where we need it: */
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sr->region_start = (di->end_ip - di->start_ip) / 0x10 * 3 - len;
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sr->region_len = 0;
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}
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/* all regions are treated as prologue regions: */
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desc_prologue (0, r->insn_count, 0, 0, sr);
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desc_prologue (0, len, 0, 0, sr);
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for (op = r->op; 1; ++op)
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{
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@ -976,7 +993,8 @@ create_state_record_for (struct cursor *c, struct ia64_state_record *sr,
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&& sr->when_target > sr->curr.reg[IA64_REG_BSPSTORE].when
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&& sr->when_target > sr->curr.reg[IA64_REG_RNAT].when)
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{
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debug (10, "unwind: func 0x%lx may switch the register-backing-store\n",
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debug (10,
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"libunwind: func 0x%lx may switch the register-backing-store\n",
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c->pi.start_ip);
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c->pi.flags |= UNW_PI_FLAG_IA64_RBS_SWITCH;
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}
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@ -984,7 +1002,7 @@ create_state_record_for (struct cursor *c, struct ia64_state_record *sr,
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#if UNW_DEBUG
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if (unw.debug_level > 0)
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{
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dprintf ("unwind: state record for func 0x%lx, t=%u (flags=0x%lx):\n",
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dprintf ("libunwind: state record for func 0x%lx, t=%u (flags=0x%lx):\n",
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(long) c->pi.start_ip, sr->when_target, (long) c->pi.flags);
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for (r = sr->curr.reg; r < sr->curr.reg + IA64_NUM_PREGS; ++r)
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{
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