binutils/
* dwarf.c (cu_tu_indexes_read, shndx_pool, shndx_pool_size) (shndx_pool_used): Move to top of file. (struct cu_tu_set): New type. (cu_count, tu_count, cu_sets, tu_sets): New file scope variables. (fetch_indexed_string): Add "this_set" parameter. Update all callers. (find_cu_tu_set_v2): New function. (read_and_display_attr_value): Add "this_set" parameter. (read_and_display_attr): Likewise. (process_debug_info): Track base offsets for DWARF package files. (load_debug_info): Call load_cu_tu_indexes. (get_DW_SECT_short_name): New function. (process_cu_tu_index): Add support for version 2 DWARF package files.
This commit is contained in:
Cary Coutant
parent
8a7bad181f
commit
341f9135d1
2 changed files with 355 additions and 65 deletions
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@ -1,3 +1,18 @@
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2013-03-01 Cary Coutant <ccoutant@google.com>
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* dwarf.c (cu_tu_indexes_read, shndx_pool, shndx_pool_size)
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(shndx_pool_used): Move to top of file.
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(struct cu_tu_set): New type.
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(cu_count, tu_count, cu_sets, tu_sets): New file scope variables.
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(fetch_indexed_string): Add "this_set" parameter. Update all callers.
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(find_cu_tu_set_v2): New function.
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(read_and_display_attr_value): Add "this_set" parameter.
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(read_and_display_attr): Likewise.
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(process_debug_info): Track base offsets for DWARF package files.
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(load_debug_info): Call load_cu_tu_indexes.
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(get_DW_SECT_short_name): New function.
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(process_cu_tu_index): Add support for version 2 DWARF package files.
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2013-02-27 Alan Modra <amodra@gmail.com>
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PR binutils/15191
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405
binutils/dwarf.c
405
binutils/dwarf.c
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@ -71,6 +71,36 @@ unsigned long dwarf_start_die;
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int dwarf_check = 0;
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/* Collection of CU/TU section sets from .debug_cu_index and .debug_tu_index
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sections. For version 1 package files, each set is stored in SHNDX_POOL
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as a zero-terminated list of section indexes comprising one set of debug
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sections from a .dwo file. */
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static int cu_tu_indexes_read = 0;
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static unsigned int *shndx_pool = NULL;
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static unsigned int shndx_pool_size = 0;
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static unsigned int shndx_pool_used = 0;
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/* For version 2 package files, each set contains an array of section offsets
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and an array of section sizes, giving the offset and size of the
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contribution from a CU or TU within one of the debug sections.
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When displaying debug info from a package file, we need to use these
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tables to locate the corresponding contributions to each section. */
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struct cu_tu_set
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{
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uint64_t signature;
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dwarf_vma section_offsets[DW_SECT_MAX];
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size_t section_sizes[DW_SECT_MAX];
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};
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static int cu_count = 0;
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static int tu_count = 0;
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static struct cu_tu_set *cu_sets = NULL;
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static struct cu_tu_set *tu_sets = NULL;
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static void load_cu_tu_indexes (void *file);
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/* Values for do_debug_lines. */
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#define FLAG_DEBUG_LINES_RAW 1
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#define FLAG_DEBUG_LINES_DECODED 2
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@ -450,7 +480,8 @@ fetch_indirect_string (dwarf_vma offset)
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}
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static const char *
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fetch_indexed_string (dwarf_vma idx, dwarf_vma offset_size, int dwo)
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fetch_indexed_string (dwarf_vma idx, struct cu_tu_set *this_set,
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dwarf_vma offset_size, int dwo)
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{
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enum dwarf_section_display_enum str_sec_idx = dwo ? str_dwo : str;
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enum dwarf_section_display_enum idx_sec_idx = dwo ? str_index_dwo : str_index;
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@ -465,6 +496,8 @@ fetch_indexed_string (dwarf_vma idx, dwarf_vma offset_size, int dwo)
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/* DWARF sections under Mach-O have non-zero addresses. */
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index_offset -= index_section->address;
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if (this_set != NULL)
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index_offset += this_set->section_offsets [DW_SECT_STR_OFFSETS];
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if (index_offset > index_section->size)
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{
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warn (_("DW_FORM_GNU_str_index offset too big: %s\n"),
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@ -1253,6 +1286,38 @@ decode_location_expression (unsigned char * data,
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return need_frame_base;
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}
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/* Find the CU or TU set corresponding to the given CU_OFFSET.
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This is used for DWARF package files. */
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static struct cu_tu_set *
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find_cu_tu_set_v2 (dwarf_vma cu_offset, int do_types)
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{
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struct cu_tu_set *p;
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unsigned int nsets;
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unsigned int dw_sect;
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if (do_types)
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{
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p = tu_sets;
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nsets = tu_count;
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dw_sect = DW_SECT_TYPES;
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}
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else
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{
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p = cu_sets;
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nsets = cu_count;
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dw_sect = DW_SECT_INFO;
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}
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while (nsets > 0)
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{
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if (p->section_offsets [dw_sect] == cu_offset)
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return p;
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p++;
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nsets--;
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}
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return NULL;
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}
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static unsigned char *
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read_and_display_attr_value (unsigned long attribute,
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unsigned long form,
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@ -1263,7 +1328,8 @@ read_and_display_attr_value (unsigned long attribute,
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int dwarf_version,
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debug_info * debug_info_p,
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int do_loc,
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struct dwarf_section * section)
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struct dwarf_section * section,
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struct cu_tu_set * this_set)
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{
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dwarf_vma uvalue = 0;
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unsigned char *block_start = NULL;
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@ -1351,7 +1417,7 @@ read_and_display_attr_value (unsigned long attribute,
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cu_offset, pointer_size,
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offset_size, dwarf_version,
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debug_info_p, do_loc,
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section);
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section, this_set);
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case DW_FORM_GNU_addr_index:
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uvalue = read_leb128 (data, & bytes_read, 0);
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data += bytes_read;
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@ -1475,7 +1541,7 @@ read_and_display_attr_value (unsigned long attribute,
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printf (_(" (indexed string: 0x%s): %s"),
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dwarf_vmatoa ("x", uvalue),
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fetch_indexed_string (uvalue, offset_size, dwo));
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fetch_indexed_string (uvalue, this_set, offset_size, dwo));
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}
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break;
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@ -1553,6 +1619,8 @@ read_and_display_attr_value (unsigned long attribute,
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lmax, sizeof (*debug_info_p->have_frame_base));
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debug_info_p->max_loc_offsets = lmax;
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}
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if (this_set != NULL)
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uvalue += this_set->section_offsets [DW_SECT_LOC];
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debug_info_p->loc_offsets [num] = uvalue;
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debug_info_p->have_frame_base [num] = have_frame_base;
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debug_info_p->num_loc_offsets++;
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@ -1904,20 +1972,20 @@ read_and_display_attr (unsigned long attribute,
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int dwarf_version,
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debug_info * debug_info_p,
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int do_loc,
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struct dwarf_section * section)
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struct dwarf_section * section,
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struct cu_tu_set * this_set)
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{
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if (!do_loc)
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printf (" %-18s:", get_AT_name (attribute));
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data = read_and_display_attr_value (attribute, form, data, cu_offset,
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pointer_size, offset_size,
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dwarf_version, debug_info_p,
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do_loc, section);
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do_loc, section, this_set);
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if (!do_loc)
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printf ("\n");
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return data;
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}
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/* Process the contents of a .debug_info section. If do_loc is non-zero
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then we are scanning for location lists and we do not want to display
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anything to the user. If do_types is non-zero, we are processing
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@ -2025,6 +2093,9 @@ process_debug_info (struct dwarf_section *section,
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dwarf_vma signature_high = 0;
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dwarf_vma signature_low = 0;
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dwarf_vma type_offset = 0;
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struct cu_tu_set *this_set;
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dwarf_vma abbrev_base;
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size_t abbrev_size;
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hdrptr = start;
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@ -2049,9 +2120,22 @@ process_debug_info (struct dwarf_section *section,
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cu_offset = start - section_begin;
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this_set = find_cu_tu_set_v2 (cu_offset, do_types);
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compunit.cu_abbrev_offset = byte_get (hdrptr, offset_size);
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hdrptr += offset_size;
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if (this_set == NULL)
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{
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abbrev_base = 0;
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abbrev_size = debug_displays [abbrev_sec].section.size;
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}
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else
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{
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abbrev_base = this_set->section_offsets [DW_SECT_ABBREV];
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abbrev_size = this_set->section_sizes [DW_SECT_ABBREV];
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}
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compunit.cu_pointer_size = byte_get (hdrptr, 1);
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hdrptr += 1;
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@ -2105,6 +2189,25 @@ process_debug_info (struct dwarf_section *section,
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printf (_(" Type Offset: 0x%s\n"),
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dwarf_vmatoa ("x", type_offset));
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}
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if (this_set != NULL)
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{
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dwarf_vma *offsets = this_set->section_offsets;
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size_t *sizes = this_set->section_sizes;
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printf (_(" Section contributions:\n"));
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printf (_(" .debug_abbrev.dwo: 0x%s 0x%s\n"),
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dwarf_vmatoa ("x", offsets [DW_SECT_ABBREV]),
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dwarf_vmatoa ("x", sizes [DW_SECT_ABBREV]));
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printf (_(" .debug_line.dwo: 0x%s 0x%s\n"),
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dwarf_vmatoa ("x", offsets [DW_SECT_LINE]),
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dwarf_vmatoa ("x", sizes [DW_SECT_LINE]));
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printf (_(" .debug_loc.dwo: 0x%s 0x%s\n"),
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dwarf_vmatoa ("x", offsets [DW_SECT_LOC]),
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dwarf_vmatoa ("x", sizes [DW_SECT_LOC]));
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printf (_(" .debug_str_offsets.dwo: 0x%s 0x%s\n"),
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dwarf_vmatoa ("x", offsets [DW_SECT_STR_OFFSETS]),
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dwarf_vmatoa ("x", sizes [DW_SECT_STR_OFFSETS]));
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}
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}
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if (cu_offset + compunit.cu_length + initial_length_size
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@ -2133,16 +2236,16 @@ process_debug_info (struct dwarf_section *section,
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/* Process the abbrevs used by this compilation unit. DWARF
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sections under Mach-O have non-zero addresses. */
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if (compunit.cu_abbrev_offset >= debug_displays [abbrev_sec].section.size)
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if (compunit.cu_abbrev_offset >= abbrev_size)
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warn (_("Debug info is corrupted, abbrev offset (%lx) is larger than abbrev section size (%lx)\n"),
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(unsigned long) compunit.cu_abbrev_offset,
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(unsigned long) debug_displays [abbrev_sec].section.size);
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(unsigned long) abbrev_size);
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else
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process_abbrev_section
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((unsigned char *) debug_displays [abbrev_sec].section.start
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+ compunit.cu_abbrev_offset,
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(unsigned char *) debug_displays [abbrev_sec].section.start
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+ debug_displays [abbrev_sec].section.size);
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(((unsigned char *) debug_displays [abbrev_sec].section.start
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+ abbrev_base + compunit.cu_abbrev_offset),
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((unsigned char *) debug_displays [abbrev_sec].section.start
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+ abbrev_base + abbrev_size));
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level = 0;
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last_level = level;
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@ -2274,12 +2377,15 @@ process_debug_info (struct dwarf_section *section,
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tags = read_and_display_attr (attr->attribute,
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attr->form,
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tags, cu_offset,
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tags,
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cu_offset,
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compunit.cu_pointer_size,
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offset_size,
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compunit.cu_version,
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arg,
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do_loc || ! do_printing, section);
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do_loc || ! do_printing,
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section,
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this_set);
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}
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if (entry->children)
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@ -2323,6 +2429,9 @@ load_debug_info (void * file)
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if (num_debug_info_entries > 0)
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return num_debug_info_entries;
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/* If this is a DWARF package file, load the CU and TU indexes. */
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load_cu_tu_indexes (file);
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if (load_debug_section (info, file)
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&& process_debug_info (&debug_displays [info].section, file, abbrev, 1, 0))
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return num_debug_info_entries;
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@ -3715,7 +3824,8 @@ display_debug_macro (struct dwarf_section *section,
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curr
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= read_and_display_attr_value (0, byte_get (desc++, 1),
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curr, 0, 0, offset_size,
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version, NULL, 0, NULL);
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version, NULL, 0, NULL,
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NULL);
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if (n != nargs - 1)
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printf (",");
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}
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@ -3888,7 +3998,7 @@ print_addr_index (unsigned int idx, unsigned int len)
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{
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static char buf[15];
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snprintf (buf, sizeof (buf), "[%d]", idx);
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printf("%*s ", len, buf);
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printf ("%*s ", len, buf);
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}
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/* Display a location list from a .dwo section. It uses address indexes rather
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@ -5878,15 +5988,6 @@ display_gdb_index (struct dwarf_section *section,
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return 1;
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}
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/* Collection of CU/TU section sets from .debug_cu_index and .debug_tu_index
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sections. Each set is stored in SHNDX_POOL as a zero-terminated list of
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section indexes comprising one set of debug sections from a .dwo file. */
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int cu_tu_indexes_read = 0;
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unsigned int *shndx_pool = NULL;
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unsigned int shndx_pool_size = 0;
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unsigned int shndx_pool_used = 0;
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/* Pre-allocate enough space for the CU/TU sets needed. */
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static void
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@ -5929,7 +6030,42 @@ end_cu_tu_entry (void)
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shndx_pool [shndx_pool_used++] = 0;
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}
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/* Process a CU or TU index. If DO_DISPLAY is true, print the contents. */
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/* Return the short name of a DWARF section given by a DW_SECT enumerator. */
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static const char *
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get_DW_SECT_short_name (unsigned int dw_sect)
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{
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static char buf[16];
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switch (dw_sect)
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{
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case DW_SECT_INFO:
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return "info";
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case DW_SECT_TYPES:
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return "types";
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case DW_SECT_ABBREV:
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return "abbrev";
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case DW_SECT_LINE:
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return "line";
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case DW_SECT_LOC:
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return "loc";
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case DW_SECT_STR_OFFSETS:
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return "str_off";
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case DW_SECT_MACINFO:
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return "macinfo";
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case DW_SECT_MACRO:
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return "macro";
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default:
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break;
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}
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snprintf (buf, sizeof (buf), "%d", dw_sect);
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return buf;
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}
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/* Process a CU or TU index. If DO_DISPLAY is true, print the contents.
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These sections are extensions for Fission.
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See http://gcc.gnu.org/wiki/DebugFissionDWP. */
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static int
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process_cu_tu_index (struct dwarf_section *section, int do_display)
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@ -5940,24 +6076,30 @@ process_cu_tu_index (struct dwarf_section *section, int do_display)
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unsigned char *pindex;
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unsigned char *ppool;
|
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unsigned int version;
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unsigned int ncols = 0;
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unsigned int nused;
|
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unsigned int nslots;
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unsigned int i;
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unsigned int j;
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dwarf_vma signature_high;
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dwarf_vma signature_low;
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char buf[64];
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|
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version = byte_get (phdr, 4);
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if (version >= 2)
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ncols = byte_get (phdr + 4, 4);
|
||||
nused = byte_get (phdr + 8, 4);
|
||||
nslots = byte_get (phdr + 12, 4);
|
||||
phash = phdr + 16;
|
||||
pindex = phash + nslots * 8;
|
||||
ppool = pindex + nslots * 4;
|
||||
|
||||
if (!do_display)
|
||||
prealloc_cu_tu_list((limit - ppool) / 4);
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||||
|
||||
if (do_display)
|
||||
{
|
||||
printf (_("Contents of the %s section:\n\n"), section->name);
|
||||
printf (_(" Version: %d\n"), version);
|
||||
if (version >= 2)
|
||||
printf (_(" Number of columns: %d\n"), ncols);
|
||||
printf (_(" Number of used entries: %d\n"), nused);
|
||||
printf (_(" Number of slots: %d\n\n"), nslots);
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}
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@ -5969,49 +6111,182 @@ process_cu_tu_index (struct dwarf_section *section, int do_display)
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return 0;
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}
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||||
|
||||
for (i = 0; i < nslots; i++)
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||||
if (version == 1)
|
||||
{
|
||||
dwarf_vma signature_high;
|
||||
dwarf_vma signature_low;
|
||||
unsigned int j;
|
||||
unsigned char *shndx_list;
|
||||
unsigned int shndx;
|
||||
char buf[64];
|
||||
|
||||
byte_get_64 (phash, &signature_high, &signature_low);
|
||||
if (signature_high != 0 || signature_low != 0)
|
||||
if (!do_display)
|
||||
prealloc_cu_tu_list ((limit - ppool) / 4);
|
||||
for (i = 0; i < nslots; i++)
|
||||
{
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||||
j = byte_get (pindex, 4);
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||||
shndx_list = ppool + j * 4;
|
||||
if (do_display)
|
||||
printf (_(" [%3d] Signature: 0x%s Sections: "),
|
||||
i, dwarf_vmatoa64 (signature_high, signature_low,
|
||||
buf, sizeof (buf)));
|
||||
for (;;)
|
||||
unsigned char *shndx_list;
|
||||
unsigned int shndx;
|
||||
|
||||
byte_get_64 (phash, &signature_high, &signature_low);
|
||||
if (signature_high != 0 || signature_low != 0)
|
||||
{
|
||||
if (shndx_list >= limit)
|
||||
{
|
||||
warn (_("Section %s too small for shndx pool\n"),
|
||||
section->name);
|
||||
return 0;
|
||||
}
|
||||
shndx = byte_get (shndx_list, 4);
|
||||
if (shndx == 0)
|
||||
break;
|
||||
j = byte_get (pindex, 4);
|
||||
shndx_list = ppool + j * 4;
|
||||
if (do_display)
|
||||
printf (" %d", shndx);
|
||||
printf (_(" [%3d] Signature: 0x%s Sections: "),
|
||||
i, dwarf_vmatoa64 (signature_high, signature_low,
|
||||
buf, sizeof (buf)));
|
||||
for (;;)
|
||||
{
|
||||
if (shndx_list >= limit)
|
||||
{
|
||||
warn (_("Section %s too small for shndx pool\n"),
|
||||
section->name);
|
||||
return 0;
|
||||
}
|
||||
shndx = byte_get (shndx_list, 4);
|
||||
if (shndx == 0)
|
||||
break;
|
||||
if (do_display)
|
||||
printf (" %d", shndx);
|
||||
else
|
||||
add_shndx_to_cu_tu_entry (shndx);
|
||||
shndx_list += 4;
|
||||
}
|
||||
if (do_display)
|
||||
printf ("\n");
|
||||
else
|
||||
add_shndx_to_cu_tu_entry (shndx);
|
||||
shndx_list += 4;
|
||||
end_cu_tu_entry ();
|
||||
}
|
||||
if (do_display)
|
||||
printf ("\n");
|
||||
else
|
||||
end_cu_tu_entry ();
|
||||
phash += 8;
|
||||
pindex += 4;
|
||||
}
|
||||
phash += 8;
|
||||
pindex += 4;
|
||||
}
|
||||
else if (version == 2)
|
||||
{
|
||||
unsigned int val;
|
||||
unsigned int dw_sect;
|
||||
unsigned char *ph = phash;
|
||||
unsigned char *pi = pindex;
|
||||
unsigned char *poffsets = ppool + ncols * 4;
|
||||
unsigned char *psizes = poffsets + nused * ncols * 4;
|
||||
unsigned char *pend = psizes + nused * ncols * 4;
|
||||
bfd_boolean is_tu_index;
|
||||
struct cu_tu_set *this_set = NULL;
|
||||
unsigned int row;
|
||||
unsigned char *prow;
|
||||
|
||||
is_tu_index = strcmp (section->name, ".debug_tu_index") == 0;
|
||||
|
||||
if (pend > limit)
|
||||
{
|
||||
warn (_("Section %s too small for offset and size tables\n"),
|
||||
section->name);
|
||||
return 0;
|
||||
}
|
||||
|
||||
if (do_display)
|
||||
{
|
||||
printf (_(" Offset table\n"));
|
||||
printf (" slot %-16s ",
|
||||
is_tu_index ? _("signature") : _("dwo_id"));
|
||||
}
|
||||
else
|
||||
{
|
||||
if (is_tu_index)
|
||||
{
|
||||
tu_count = nused;
|
||||
tu_sets = xcmalloc (nused, sizeof (struct cu_tu_set));
|
||||
this_set = tu_sets;
|
||||
}
|
||||
else
|
||||
{
|
||||
cu_count = nused;
|
||||
cu_sets = xcmalloc (nused, sizeof (struct cu_tu_set));
|
||||
this_set = cu_sets;
|
||||
}
|
||||
}
|
||||
if (do_display)
|
||||
{
|
||||
for (j = 0; j < ncols; j++)
|
||||
{
|
||||
dw_sect = byte_get (ppool + j * 4, 4);
|
||||
printf (" %8s", get_DW_SECT_short_name (dw_sect));
|
||||
}
|
||||
printf ("\n");
|
||||
}
|
||||
for (i = 0; i < nslots; i++)
|
||||
{
|
||||
byte_get_64 (ph, &signature_high, &signature_low);
|
||||
row = byte_get (pi, 4);
|
||||
if (row != 0)
|
||||
{
|
||||
if (!do_display)
|
||||
memcpy (&this_set[row - 1].signature, ph, sizeof (uint64_t));
|
||||
prow = poffsets + (row - 1) * ncols * 4;
|
||||
if (do_display)
|
||||
printf (_(" [%3d] 0x%s"),
|
||||
i, dwarf_vmatoa64 (signature_high, signature_low,
|
||||
buf, sizeof (buf)));
|
||||
for (j = 0; j < ncols; j++)
|
||||
{
|
||||
val = byte_get (prow + j * 4, 4);
|
||||
if (do_display)
|
||||
printf (" %8d", val);
|
||||
else
|
||||
{
|
||||
dw_sect = byte_get (ppool + j * 4, 4);
|
||||
this_set [row - 1].section_offsets [dw_sect] = val;
|
||||
}
|
||||
}
|
||||
if (do_display)
|
||||
printf ("\n");
|
||||
}
|
||||
ph += 8;
|
||||
pi += 4;
|
||||
}
|
||||
|
||||
ph = phash;
|
||||
pi = pindex;
|
||||
if (do_display)
|
||||
{
|
||||
printf ("\n");
|
||||
printf (_(" Size table\n"));
|
||||
printf (" slot %-16s ",
|
||||
is_tu_index ? _("signature") : _("dwo_id"));
|
||||
}
|
||||
for (j = 0; j < ncols; j++)
|
||||
{
|
||||
val = byte_get (ppool + j * 4, 4);
|
||||
if (do_display)
|
||||
printf (" %8s", get_DW_SECT_short_name (val));
|
||||
}
|
||||
if (do_display)
|
||||
printf ("\n");
|
||||
for (i = 0; i < nslots; i++)
|
||||
{
|
||||
byte_get_64 (ph, &signature_high, &signature_low);
|
||||
row = byte_get (pi, 4);
|
||||
if (row != 0)
|
||||
{
|
||||
prow = psizes + (row - 1) * ncols * 4;
|
||||
if (do_display)
|
||||
printf (_(" [%3d] 0x%s"),
|
||||
i, dwarf_vmatoa64 (signature_high, signature_low,
|
||||
buf, sizeof (buf)));
|
||||
for (j = 0; j < ncols; j++)
|
||||
{
|
||||
val = byte_get (prow + j * 4, 4);
|
||||
if (do_display)
|
||||
printf (" %8d", val);
|
||||
else
|
||||
{
|
||||
dw_sect = byte_get (ppool + j * 4, 4);
|
||||
this_set [row - 1].section_sizes [dw_sect] = val;
|
||||
}
|
||||
}
|
||||
if (do_display)
|
||||
printf ("\n");
|
||||
}
|
||||
ph += 8;
|
||||
pi += 4;
|
||||
}
|
||||
}
|
||||
else if (do_display)
|
||||
printf (_(" Unsupported version\n"));
|
||||
|
||||
if (do_display)
|
||||
printf ("\n");
|
||||
|
|
|
|||
Loading…
Reference in a new issue