Bug #17052 » ruby-addr2line-abbrev_table-r1.patch
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const char *q;
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int format; // 4 or 8
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uint8_t address_size;
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uint64_t debug_abbrev_offset;
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int level;
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const char *abbrev_table[ABBREV_TABLE_SIZE];
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} DebugInfoReader;
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| ... | ... | |
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static void
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di_read_debug_abbrev_cu(DebugInfoReader *reader)
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{
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uint64_t prev = 0;
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const char *p = reader->q0;
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size_t i;
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for (i = 0; i < ABBREV_TABLE_SIZE; i++)
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reader->abbrev_table[i] = NULL;
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for (;;) {
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uint64_t abbrev_number = uleb128(&p);
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if (abbrev_number <= prev) break;
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if (abbrev_number == 0) break;
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if (abbrev_number < ABBREV_TABLE_SIZE) {
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reader->abbrev_table[abbrev_number] = p;
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}
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prev = abbrev_number;
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uleb128(&p); /* tag */
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p++; /* has_children */
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di_skip_die_attributes(&p);
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| ... | ... | |
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exit(1);
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}
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static const char *
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di_abbrev_table(DebugInfoReader *reader, uint64_t abbrev_number)
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{
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const char *p = reader->abbrev_table[abbrev_number];
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if (!p) {
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fprintf(stderr,"%d: Abbrev Number %"PRId64" not found\n",__LINE__, abbrev_number);
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abort();
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}
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return p;
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}
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/* find abbrev in current compilation unit */
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static const char *
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di_find_abbrev(DebugInfoReader *reader, uint64_t abbrev_number)
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{
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const char *p;
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if (abbrev_number < ABBREV_TABLE_SIZE) {
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return reader->abbrev_table[abbrev_number];
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return di_abbrev_table(reader, abbrev_number);
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}
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p = reader->abbrev_table[ABBREV_TABLE_SIZE-1];
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/* skip 255th record */
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uleb128(&p); /* tag */
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p++; /* has_children */
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di_skip_die_attributes(&p);
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p = reader->obj->debug_abbrev.ptr + reader->debug_abbrev_offset;
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for (uint64_t n = uleb128(&p); abbrev_number != n; n = uleb128(&p)) {
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if (n == 0) {
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fprintf(stderr,"%d: Abbrev Number %"PRId64" not found\n",__LINE__, abbrev_number);
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| ... | ... | |
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{
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uint64_t unit_length;
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uint16_t version;
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uint64_t debug_abbrev_offset;
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reader->format = 4;
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reader->current_cu = reader->p;
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unit_length = read_uint32(&reader->p);
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| ... | ... | |
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else if (version == 5) {
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/* unit_type = */ read_uint8(&reader->p);
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reader->address_size = read_uint8(&reader->p);
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debug_abbrev_offset = read_uint(reader);
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reader->debug_abbrev_offset = read_uint(reader);
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}
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else {
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debug_abbrev_offset = read_uint(reader);
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reader->debug_abbrev_offset = read_uint(reader);
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reader->address_size = read_uint8(&reader->p);
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}
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reader->q0 = reader->obj->debug_abbrev.ptr + debug_abbrev_offset;
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reader->q0 = reader->obj->debug_abbrev.ptr + reader->debug_abbrev_offset;
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reader->level = 0;
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di_read_debug_abbrev_cu(reader);
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