/* 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. */
}
/* 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_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)
{
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);
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)
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, stash->sec);
+ stash->sec_info_ptr = stash->info_ptr;
+ }
+
if (found)
goto done;
}
projects / deliverable / binutils-gdb.git / blobdiff