/* DWARF 2 support.
Copyright 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003,
- 2004, 2005, 2006, 2007, 2008 Free Software Foundation, Inc.
+ 2004, 2005, 2006, 2007, 2008, 2009 Free Software Foundation, Inc.
Adapted from gdb/dwarf2read.c by Gavin Koch of Cygnus Solutions
(gavin@cygnus.com).
#include "libiberty.h"
#include "libbfd.h"
#include "elf-bfd.h"
-#include "elf/dwarf2.h"
+#include "dwarf2.h"
/* The data in the .debug_line statement prologue looks like this. */
/* Pointer to the bfd, section and address of the beginning of the
section. The bfd might be different than expected because of
gnu_debuglink sections. */
- bfd * bfd;
+ bfd *bfd_ptr;
asection *sec;
bfd_byte *sec_info_ptr;
derived class. */
if (ret == NULL)
{
- ret = bfd_hash_allocate (table, sizeof (* ret));
+ ret = (struct info_hash_entry *) bfd_hash_allocate (table,
+ sizeof (* ret));
if (ret == NULL)
return NULL;
}
{
struct info_hash_table *hash_table;
- hash_table = bfd_alloc (abfd, sizeof (struct info_hash_table));
+ hash_table = (struct info_hash_table *)
+ bfd_alloc (abfd, sizeof (struct info_hash_table));
if (!hash_table)
return hash_table;
if (!entry)
return FALSE;
- node = bfd_hash_allocate (&hash_table->base, sizeof (*node));
+ node = (struct info_list_node *) bfd_hash_allocate (&hash_table->base,
+ sizeof (*node));
if (!node)
return FALSE;
}
/* Read a section into its appropriate place in the dwarf2_debug
- struct (indicated by SECTION_BUFFER and SECTION_SIZE). If syms is
+ struct (indicated by SECTION_BUFFER and SECTION_SIZE). If SYMS is
not NULL, use bfd_simple_get_relocated_section_contents to read the
- section contents, otherwise use bfd_get_section_contents. */
+ section contents, otherwise use bfd_get_section_contents. Fail if
+ the located section does not contain at least OFFSET bytes. */
static bfd_boolean
-read_section (bfd *abfd,
- const char* section_name, const char* compressed_section_name,
- asymbol** syms, bfd_uint64_t offset,
- bfd_byte **section_buffer, bfd_size_type *section_size)
+read_section (bfd * abfd,
+ const char * section_name,
+ const char * compressed_section_name,
+ asymbol ** syms,
+ bfd_uint64_t offset,
+ bfd_byte ** section_buffer,
+ bfd_size_type * section_size)
{
asection *msec;
bfd_boolean section_is_compressed = FALSE;
/* read_section is a noop if the section has already been read. */
- if (*section_buffer)
- return TRUE;
-
- msec = bfd_get_section_by_name (abfd, section_name);
- if (! msec && compressed_section_name)
- {
- msec = bfd_get_section_by_name (abfd, compressed_section_name);
- section_is_compressed = TRUE;
- }
- if (! msec)
+ if (!*section_buffer)
{
- (*_bfd_error_handler) (_("Dwarf Error: Can't find %s section."), section_name);
- bfd_set_error (bfd_error_bad_value);
- return FALSE;
- }
+ msec = bfd_get_section_by_name (abfd, section_name);
+ if (! msec && compressed_section_name)
+ {
+ msec = bfd_get_section_by_name (abfd, compressed_section_name);
+ section_is_compressed = TRUE;
+ }
+ if (! msec)
+ {
+ (*_bfd_error_handler) (_("Dwarf Error: Can't find %s section."), section_name);
+ bfd_set_error (bfd_error_bad_value);
+ return FALSE;
+ }
- if (syms)
- {
- *section_size = msec->size;
- *section_buffer
- = bfd_simple_get_relocated_section_contents (abfd, msec, NULL, syms);
- if (! *section_buffer)
- return FALSE;
- }
- else
- {
*section_size = msec->rawsize ? msec->rawsize : msec->size;
- *section_buffer = bfd_malloc (*section_size);
- if (! *section_buffer)
- return FALSE;
- if (! bfd_get_section_contents (abfd, msec, *section_buffer,
- 0, *section_size))
- return FALSE;
- }
+ if (syms)
+ {
+ *section_buffer
+ = bfd_simple_get_relocated_section_contents (abfd, msec, NULL, syms);
+ if (! *section_buffer)
+ return FALSE;
+ }
+ else
+ {
+ *section_buffer = (bfd_byte *) bfd_malloc (*section_size);
+ if (! *section_buffer)
+ return FALSE;
+ if (! bfd_get_section_contents (abfd, msec, *section_buffer,
+ 0, *section_size))
+ return FALSE;
+ }
- if (section_is_compressed)
- {
- if (! bfd_uncompress_section_contents (section_buffer, section_size))
+ if (section_is_compressed)
{
- (*_bfd_error_handler) (_("Dwarf Error: unable to decompress %s section."), compressed_section_name);
- bfd_set_error (bfd_error_bad_value);
- return FALSE;
+ if (! bfd_uncompress_section_contents (section_buffer, section_size))
+ {
+ (*_bfd_error_handler) (_("Dwarf Error: unable to decompress %s section."), compressed_section_name);
+ bfd_set_error (bfd_error_bad_value);
+ return FALSE;
+ }
}
}
/* It is possible to get a bad value for the offset into the section
- * that the client wants. Validate it here to avoid trouble later. */
+ that the client wants. Validate it here to avoid trouble later. */
if (offset != 0 && offset >= *section_size)
{
(*_bfd_error_handler) (_("Dwarf Error: Offset (%lu) greater than or equal to %s size (%lu)."),
- offset, section_name, *section_size);
+ (long) offset, section_name, *section_size);
bfd_set_error (bfd_error_bad_value);
return FALSE;
}
bfd_byte *buf,
unsigned int size ATTRIBUTE_UNUSED)
{
- /* If the size of a host char is 8 bits, we can return a pointer
- to the buffer, otherwise we have to copy the data to a buffer
- allocated on the temporary obstack. */
return buf;
}
{
/* Return a pointer to the embedded string. */
char *str = (char *) buf;
+
if (*str == '\0')
{
*bytes_read_ptr = 1;
return str;
}
+/* END VERBATIM */
+
static char *
-read_indirect_string (struct comp_unit* unit,
- bfd_byte *buf,
- unsigned int *bytes_read_ptr)
+read_indirect_string (struct comp_unit * unit,
+ bfd_byte * buf,
+ unsigned int * bytes_read_ptr)
{
bfd_uint64_t offset;
struct dwarf2_debug *stash = unit->stash;
offset = read_4_bytes (unit->abfd, buf);
else
offset = read_8_bytes (unit->abfd, buf);
+
*bytes_read_ptr = unit->offset_size;
if (! read_section (unit->abfd, ".debug_str", ".zdebug_str",
- 0, offset,
+ stash->syms, offset,
&stash->dwarf_str_buffer, &stash->dwarf_str_size))
- return 0;
+ return NULL;
str = (char *) stash->dwarf_str_buffer + offset;
if (*str == '\0')
return str;
}
-/* END VERBATIM */
-
static bfd_uint64_t
read_address (struct comp_unit *unit, bfd_byte *buf)
{
return 0;
amt = sizeof (struct abbrev_info*) * ABBREV_HASH_SIZE;
- abbrevs = bfd_zalloc (abfd, amt);
+ abbrevs = (struct abbrev_info **) bfd_zalloc (abfd, amt);
abbrev_ptr = stash->dwarf_abbrev_buffer + offset;
abbrev_number = read_unsigned_leb128 (abfd, abbrev_ptr, &bytes_read);
while (abbrev_number)
{
amt = sizeof (struct abbrev_info);
- cur_abbrev = bfd_zalloc (abfd, amt);
+ cur_abbrev = (struct abbrev_info *) bfd_zalloc (abfd, amt);
/* Read in abbrev header. */
cur_abbrev->number = abbrev_number;
amt = cur_abbrev->num_attrs + ATTR_ALLOC_CHUNK;
amt *= sizeof (struct attr_abbrev);
- tmp = bfd_realloc (cur_abbrev->attrs, amt);
+ tmp = (struct attr_abbrev *) bfd_realloc (cur_abbrev->attrs, amt);
if (tmp == NULL)
{
size_t i;
break;
case DW_FORM_block2:
amt = sizeof (struct dwarf_block);
- blk = bfd_alloc (abfd, amt);
+ blk = (struct dwarf_block *) bfd_alloc (abfd, amt);
blk->size = read_2_bytes (abfd, info_ptr);
info_ptr += 2;
blk->data = read_n_bytes (abfd, info_ptr, blk->size);
break;
case DW_FORM_block4:
amt = sizeof (struct dwarf_block);
- blk = bfd_alloc (abfd, amt);
+ blk = (struct dwarf_block *) bfd_alloc (abfd, amt);
blk->size = read_4_bytes (abfd, info_ptr);
info_ptr += 4;
blk->data = read_n_bytes (abfd, info_ptr, blk->size);
break;
case DW_FORM_block:
amt = sizeof (struct dwarf_block);
- blk = bfd_alloc (abfd, amt);
+ blk = (struct dwarf_block *) bfd_alloc (abfd, amt);
blk->size = read_unsigned_leb128 (abfd, info_ptr, &bytes_read);
info_ptr += bytes_read;
blk->data = read_n_bytes (abfd, info_ptr, blk->size);
break;
case DW_FORM_block1:
amt = sizeof (struct dwarf_block);
- blk = bfd_alloc (abfd, amt);
+ blk = (struct dwarf_block *) bfd_alloc (abfd, amt);
blk->size = read_1_byte (abfd, info_ptr);
info_ptr += 1;
blk->data = read_n_bytes (abfd, info_ptr, blk->size);
int end_sequence)
{
bfd_size_type amt = sizeof (struct line_info);
- struct line_info* info = bfd_alloc (table->abfd, amt);
+ struct line_info* info = (struct line_info *) bfd_alloc (table->abfd, amt);
/* Set member data of 'info'. */
info->address = address;
if (filename && filename[0])
{
- info->filename = bfd_alloc (table->abfd, strlen (filename) + 1);
+ info->filename = (char *) bfd_alloc (table->abfd, strlen (filename) + 1);
if (info->filename)
strcpy (info->filename, filename);
}
if (subdirname)
{
len += strlen (subdirname) + 1;
- name = bfd_malloc (len);
+ name = (char *) bfd_malloc (len);
if (name)
sprintf (name, "%s/%s/%s", dirname, subdirname, filename);
}
else
{
- name = bfd_malloc (len);
+ name = (char *) bfd_malloc (len);
if (name)
sprintf (name, "%s/%s", dirname, filename);
}
/* Need to allocate a new arange and insert it into the arange list.
Order isn't significant, so just insert after the first arange. */
- arange = bfd_zalloc (abfd, sizeof (*arange));
+ arange = (struct arange *) bfd_zalloc (abfd, sizeof (*arange));
arange->low = low_pc;
arange->high = high_pc;
arange->next = first_arange->next;
return 0;
amt = sizeof (struct line_info_table);
- table = bfd_alloc (abfd, amt);
+ table = (struct line_info_table *) bfd_alloc (abfd, amt);
table->abfd = abfd;
table->comp_dir = unit->comp_dir;
lh.opcode_base = read_1_byte (abfd, line_ptr);
line_ptr += 1;
amt = lh.opcode_base * sizeof (unsigned char);
- lh.standard_opcode_lengths = bfd_alloc (abfd, amt);
+ lh.standard_opcode_lengths = (unsigned char *) bfd_alloc (abfd, amt);
lh.standard_opcode_lengths[0] = 1;
amt = table->num_dirs + DIR_ALLOC_CHUNK;
amt *= sizeof (char *);
- tmp = bfd_realloc (table->dirs, amt);
+ tmp = (char **) bfd_realloc (table->dirs, amt);
if (tmp == NULL)
{
free (table->dirs);
amt = table->num_files + FILE_ALLOC_CHUNK;
amt *= sizeof (struct fileinfo);
- tmp = bfd_realloc (table->files, amt);
+ tmp = (struct fileinfo *) bfd_realloc (table->files, amt);
if (tmp == NULL)
{
free (table->files);
amt = table->num_files + FILE_ALLOC_CHUNK;
amt *= sizeof (struct fileinfo);
- tmp = bfd_realloc (table->files, amt);
+ tmp = (struct fileinfo *) bfd_realloc (table->files, amt);
if (tmp == NULL)
{
free (table->files);
line_ptr += bytes_read;
table->num_files++;
break;
+ case DW_LNE_set_discriminator:
+ (void) read_unsigned_leb128 (abfd, line_ptr, &bytes_read);
+ line_ptr += bytes_read;
+ break;
default:
(*_bfd_error_handler) (_("Dwarf Error: mangled line number section."));
bfd_set_error (bfd_error_bad_value);
static bfd_boolean
lookup_address_in_line_info_table (struct line_info_table *table,
bfd_vma addr,
- struct funcinfo *function,
const char **filename_ptr,
unsigned int *linenumber_ptr)
{
/* Note: table->last_line should be a descendingly sorted list. */
- struct line_info* next_line = table->last_line;
- struct line_info* each_line = NULL;
- *filename_ptr = NULL;
+ struct line_info *each_line;
- if (!next_line)
- return FALSE;
-
- each_line = next_line->prev_line;
-
- /* Check for large addresses */
- if (addr > next_line->address)
- each_line = NULL; /* ensure we skip over the normal case */
-
- /* Normal case: search the list; save */
- while (each_line && next_line)
- {
- /* If we have an address match, save this info. This allows us
- to return as good as results as possible for strange debugging
- info. */
- bfd_boolean addr_match = FALSE;
- if (each_line->address <= addr && addr < next_line->address)
- {
- addr_match = TRUE;
-
- /* If this line appears to span functions, and addr is in the
- later function, return the first line of that function instead
- of the last line of the earlier one. This check is for GCC
- 2.95, which emits the first line number for a function late. */
-
- if (function != NULL)
- {
- bfd_vma lowest_pc;
- struct arange *arange;
-
- /* Find the lowest address in the function's range list */
- lowest_pc = function->arange.low;
- for (arange = &function->arange;
- arange;
- arange = arange->next)
- {
- if (function->arange.low < lowest_pc)
- lowest_pc = function->arange.low;
- }
- /* Check for spanning function and set outgoing line info */
- if (addr >= lowest_pc
- && each_line->address < lowest_pc
- && next_line->address > lowest_pc)
- {
- *filename_ptr = next_line->filename;
- *linenumber_ptr = next_line->line;
- }
- else
- {
- *filename_ptr = each_line->filename;
- *linenumber_ptr = each_line->line;
- }
- }
- else
- {
- *filename_ptr = each_line->filename;
- *linenumber_ptr = each_line->line;
- }
- }
-
- if (addr_match && !each_line->end_sequence)
- return TRUE; /* we have definitely found what we want */
-
- next_line = each_line;
- each_line = each_line->prev_line;
- }
+ for (each_line = table->last_line;
+ each_line;
+ each_line = each_line->prev_line)
+ if (addr >= each_line->address)
+ break;
- /* At this point each_line is NULL but next_line is not. If we found
- a candidate end-of-sequence point in the loop above, we can return
- that (compatibility with a bug in the Intel compiler); otherwise,
- assuming that we found the containing function for this address in
- this compilation unit, return the first line we have a number for
- (compatibility with GCC 2.95). */
- if (*filename_ptr == NULL && function != NULL)
+ if (each_line
+ && !(each_line->end_sequence || each_line == table->last_line))
{
- *filename_ptr = next_line->filename;
- *linenumber_ptr = next_line->line;
+ *filename_ptr = each_line->filename;
+ *linenumber_ptr = each_line->line;
return TRUE;
}
+ *filename_ptr = NULL;
return FALSE;
}
bfd_vma low_pc;
bfd_vma high_pc;
- if (unit->addr_size == 4)
- {
- low_pc = read_4_bytes (unit->abfd, ranges_ptr);
- ranges_ptr += 4;
- high_pc = read_4_bytes (unit->abfd, ranges_ptr);
- ranges_ptr += 4;
- }
- else
- {
- low_pc = read_8_bytes (unit->abfd, ranges_ptr);
- ranges_ptr += 8;
- high_pc = read_8_bytes (unit->abfd, ranges_ptr);
- ranges_ptr += 8;
- }
+ low_pc = read_address (unit, ranges_ptr);
+ ranges_ptr += unit->addr_size;
+ high_pc = read_address (unit, ranges_ptr);
+ ranges_ptr += unit->addr_size;
+
if (low_pc == 0 && high_pc == 0)
break;
if (low_pc == -1UL && high_pc != -1UL)
/* Maintain a stack of in-scope functions and inlined functions, which we
can use to set the caller_func field. */
nested_funcs_size = 32;
- nested_funcs = bfd_malloc (nested_funcs_size * sizeof (struct funcinfo *));
+ nested_funcs = (struct funcinfo **)
+ bfd_malloc (nested_funcs_size * sizeof (struct funcinfo *));
if (nested_funcs == NULL)
return FALSE;
nested_funcs[nesting_level] = 0;
|| abbrev->tag == DW_TAG_inlined_subroutine)
{
bfd_size_type amt = sizeof (struct funcinfo);
- func = bfd_zalloc (abfd, amt);
+ func = (struct funcinfo *) bfd_zalloc (abfd, amt);
func->tag = abbrev->tag;
func->prev_func = unit->function_table;
unit->function_table = func;
if (abbrev->tag == DW_TAG_variable)
{
bfd_size_type amt = sizeof (struct varinfo);
- var = bfd_zalloc (abfd, amt);
+ var = (struct varinfo *) bfd_zalloc (abfd, amt);
var->tag = abbrev->tag;
var->stack = 1;
var->prev_var = unit->variable_table;
struct funcinfo **tmp;
nested_funcs_size *= 2;
- tmp = bfd_realloc (nested_funcs,
- (nested_funcs_size
- * sizeof (struct funcinfo *)));
+ tmp = (struct funcinfo **)
+ bfd_realloc (nested_funcs,
+ (nested_funcs_size * sizeof (struct funcinfo *)));
if (tmp == NULL)
{
free (nested_funcs);
bfd_size_type amt;
bfd_vma low_pc = 0;
bfd_vma high_pc = 0;
- bfd *abfd = stash->bfd;
+ bfd *abfd = stash->bfd_ptr;
version = read_2_bytes (abfd, info_ptr);
info_ptr += 2;
}
amt = sizeof (struct comp_unit);
- unit = bfd_zalloc (abfd, amt);
+ unit = (struct comp_unit *) bfd_zalloc (abfd, amt);
unit->abfd = abfd;
unit->version = version;
unit->addr_size = addr_size;
if (func_p && (function->tag == DW_TAG_inlined_subroutine))
stash->inliner_chain = function;
line_p = lookup_address_in_line_info_table (unit->line_table, addr,
- function, filename_ptr,
+ filename_ptr,
linenumber_ptr);
return line_p || func_p;
}
node;
node = node->next)
{
- each_func = node->info;
+ each_func = (struct funcinfo *) node->info;
for (arange = &each_func->arange;
arange;
arange = arange->next)
node;
node = node->next)
{
- each = node->info;
+ each = (struct varinfo *) node->info;
if (each->addr == addr
&& (!each->sec || each->sec == sec))
{
bfd_vma found = FALSE;
bfd_boolean do_line;
- stash = *pinfo;
+ stash = (struct dwarf2_debug *) *pinfo;
if (! stash)
{
bfd_size_type amt = sizeof (struct dwarf2_debug);
- stash = bfd_zalloc (abfd, amt);
+ stash = (struct dwarf2_debug *) bfd_zalloc (abfd, amt);
if (! stash)
return FALSE;
}
if (all_uncompressed)
{
/* Case 2: multiple sections, but none is compressed. */
- stash->info_ptr_memory = bfd_malloc (total_size);
+ stash->info_ptr_memory = (bfd_byte *) bfd_malloc (total_size);
if (stash->info_ptr_memory == NULL)
goto done;
goto done;
}
}
- stash->info_ptr_memory = bfd_realloc (stash->info_ptr_memory,
- total_size + size);
+ stash->info_ptr_memory = (bfd_byte *)
+ bfd_realloc (stash->info_ptr_memory, total_size + size);
memcpy (stash->info_ptr_memory + total_size, buffer, size);
free (buffer);
total_size += size;
stash->sec = find_debug_info (debug_bfd, NULL);
stash->sec_info_ptr = stash->info_ptr;
stash->syms = symbols;
- stash->bfd = debug_bfd;
+ stash->bfd_ptr = debug_bfd;
}
/* A null info_ptr indicates that there is no dwarf2 info
unsigned int offset_size = addr_size;
bfd_byte *info_ptr_unit = stash->info_ptr;
- length = read_4_bytes (stash->bfd, stash->info_ptr);
+ length = read_4_bytes (stash->bfd_ptr, stash->info_ptr);
/* A 0xffffff length is the DWARF3 way of indicating
we use 64-bit offsets, instead of 32-bit offsets. */
if (length == 0xffffffff)
{
offset_size = 8;
- length = read_8_bytes (stash->bfd, stash->info_ptr + 4);
+ length = read_8_bytes (stash->bfd_ptr, stash->info_ptr + 4);
stash->info_ptr += 12;
}
/* A zero length is the IRIX way of indicating 64-bit offsets,
else if (length == 0)
{
offset_size = 8;
- length = read_4_bytes (stash->bfd, stash->info_ptr + 4);
+ length = read_4_bytes (stash->bfd_ptr, stash->info_ptr + 4);
stash->info_ptr += 8;
}
/* In the absence of the hints above, we assume 32-bit DWARF2
break;
stash->info_ptr += length;
- if ((bfd_vma) (stash->info_ptr - stash->sec_info_ptr)
- == stash->sec->size)
- {
- stash->sec = find_debug_info (stash->bfd, stash->sec);
- stash->sec_info_ptr = stash->info_ptr;
- }
-
if (stash->all_comp_units)
stash->all_comp_units->prev_unit = each;
else
functionname_ptr,
linenumber_ptr,
stash));
+
+ if ((bfd_vma) (stash->info_ptr - stash->sec_info_ptr)
+ == stash->sec->size)
+ {
+ stash->sec = find_debug_info (stash->bfd_ptr, stash->sec);
+ stash->sec_info_ptr = stash->info_ptr;
+ }
+
if (found)
goto done;
}
{
struct dwarf2_debug *stash;
- stash = *pinfo;
+ stash = (struct dwarf2_debug *) *pinfo;
if (stash)
{
struct funcinfo *func = stash->inliner_chain;
if (abfd == NULL || elf_tdata (abfd) == NULL)
return;
- stash = elf_tdata (abfd)->dwarf2_find_line_info;
+ stash = (struct dwarf2_debug *) elf_tdata (abfd)->dwarf2_find_line_info;
if (stash == NULL)
return;
projects / deliverable / binutils-gdb.git / blobdiff