/* DWARF 2 support.
Copyright 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003,
- 2004 Free Software Foundation, Inc.
+ 2004, 2005 Free Software Foundation, Inc.
Adapted from gdb/dwarf2read.c by Gavin Koch of Cygnus Solutions
(gavin@cygnus.com).
struct dwarf_block
{
unsigned int size;
- char *data;
+ bfd_byte *data;
};
struct dwarf2_debug
{
/* A list of all previously read comp_units. */
- struct comp_unit* all_comp_units;
+ struct comp_unit *all_comp_units;
/* The next unread compilation unit within the .debug_info section.
Zero indicates that the .debug_info section has not been loaded
into a buffer yet. */
- char* info_ptr;
+ bfd_byte *info_ptr;
/* Pointer to the end of the .debug_info section memory buffer. */
- char* info_ptr_end;
+ bfd_byte *info_ptr_end;
/* Pointer to the section and address of the beginning of the
section. */
- asection* sec;
- char* sec_info_ptr;
+ asection *sec;
+ bfd_byte *sec_info_ptr;
/* Pointer to the symbol table. */
- asymbol** syms;
+ asymbol **syms;
/* Pointer to the .debug_abbrev section loaded into memory. */
- char* dwarf_abbrev_buffer;
+ bfd_byte *dwarf_abbrev_buffer;
/* Length of the loaded .debug_abbrev section. */
unsigned long dwarf_abbrev_size;
/* Buffer for decode_line_info. */
- char *dwarf_line_buffer;
+ bfd_byte *dwarf_line_buffer;
/* Length of the loaded .debug_line section. */
unsigned long dwarf_line_size;
/* Pointer to the .debug_str section loaded into memory. */
- char* dwarf_str_buffer;
+ bfd_byte *dwarf_str_buffer;
/* Length of the loaded .debug_str section. */
unsigned long dwarf_str_size;
struct comp_unit
{
/* Chain the previously read compilation units. */
- struct comp_unit* next_unit;
+ struct comp_unit *next_unit;
/* Keep the bdf convenient (for memory allocation). */
- bfd* abfd;
+ bfd *abfd;
/* The lowest and higest addresses contained in this compilation
unit as specified in the compilation unit header. */
struct arange arange;
/* The DW_AT_name attribute (for error messages). */
- char* name;
+ char *name;
/* The abbrev hash table. */
- struct abbrev_info** abbrevs;
+ struct abbrev_info **abbrevs;
/* Note that an error was found by comp_unit_find_nearest_line. */
int error;
/* The DW_AT_comp_dir attribute. */
- char* comp_dir;
+ char *comp_dir;
/* TRUE if there is a line number table associated with this comp. unit. */
int stmtlist;
+ /* Pointer to the current comp_unit so that we can find a given entry
+ by its reference. */
+ bfd_byte *info_ptr_unit;
+
/* The offset into .debug_line of the line number table. */
unsigned long line_offset;
/* Pointer to the first child die for the comp unit. */
- char *first_child_die_ptr;
+ bfd_byte *first_child_die_ptr;
/* The end of the comp unit. */
- char *end_ptr;
+ bfd_byte *end_ptr;
/* The decoded line number, NULL if not yet decoded. */
- struct line_info_table* line_table;
+ struct line_info_table *line_table;
/* A list of the functions found in this comp. unit. */
- struct funcinfo* function_table;
+ struct funcinfo *function_table;
/* Pointer to dwarf2_debug structure. */
struct dwarf2_debug *stash;
/* Read dwarf information from a buffer. */
static unsigned int
-read_1_byte (bfd *abfd ATTRIBUTE_UNUSED, char *buf)
+read_1_byte (bfd *abfd ATTRIBUTE_UNUSED, bfd_byte *buf)
{
return bfd_get_8 (abfd, buf);
}
static int
-read_1_signed_byte (bfd *abfd ATTRIBUTE_UNUSED, char *buf)
+read_1_signed_byte (bfd *abfd ATTRIBUTE_UNUSED, bfd_byte *buf)
{
return bfd_get_signed_8 (abfd, buf);
}
static unsigned int
-read_2_bytes (bfd *abfd, char *buf)
+read_2_bytes (bfd *abfd, bfd_byte *buf)
{
return bfd_get_16 (abfd, buf);
}
static unsigned int
-read_4_bytes (bfd *abfd, char *buf)
+read_4_bytes (bfd *abfd, bfd_byte *buf)
{
return bfd_get_32 (abfd, buf);
}
static bfd_uint64_t
-read_8_bytes (bfd *abfd, char *buf)
+read_8_bytes (bfd *abfd, bfd_byte *buf)
{
return bfd_get_64 (abfd, buf);
}
-static char *
+static bfd_byte *
read_n_bytes (bfd *abfd ATTRIBUTE_UNUSED,
- char *buf,
+ bfd_byte *buf,
unsigned int size ATTRIBUTE_UNUSED)
{
/* If the size of a host char is 8 bits, we can return a pointer
static char *
read_string (bfd *abfd ATTRIBUTE_UNUSED,
- char *buf,
+ bfd_byte *buf,
unsigned int *bytes_read_ptr)
{
/* Return a pointer to the embedded string. */
- if (*buf == '\0')
+ char *str = (char *) buf;
+ if (*str == '\0')
{
*bytes_read_ptr = 1;
return NULL;
}
- *bytes_read_ptr = strlen (buf) + 1;
- return buf;
+ *bytes_read_ptr = strlen (str) + 1;
+ return str;
}
static char *
read_indirect_string (struct comp_unit* unit,
- char *buf,
+ bfd_byte *buf,
unsigned int *bytes_read_ptr)
{
bfd_uint64_t offset;
struct dwarf2_debug *stash = unit->stash;
+ char *str;
if (unit->offset_size == 4)
offset = read_4_bytes (unit->abfd, buf);
{
asection *msec;
bfd *abfd = unit->abfd;
+ bfd_size_type sz;
msec = bfd_get_section_by_name (abfd, ".debug_str");
if (! msec)
return NULL;
}
- stash->dwarf_str_size = msec->_raw_size;
- stash->dwarf_str_buffer = bfd_alloc (abfd, msec->_raw_size);
+ sz = msec->rawsize ? msec->rawsize : msec->size;
+ stash->dwarf_str_size = sz;
+ stash->dwarf_str_buffer = bfd_alloc (abfd, sz);
if (! stash->dwarf_abbrev_buffer)
return NULL;
if (! bfd_get_section_contents (abfd, msec, stash->dwarf_str_buffer,
- 0, msec->_raw_size))
+ 0, sz))
return NULL;
}
return NULL;
}
- buf = stash->dwarf_str_buffer + offset;
- if (*buf == '\0')
+ str = (char *) stash->dwarf_str_buffer + offset;
+ if (*str == '\0')
return NULL;
- return buf;
-}
-
-static unsigned int
-read_unsigned_leb128 (bfd *abfd ATTRIBUTE_UNUSED,
- char *buf,
- unsigned int *bytes_read_ptr)
-{
- unsigned int result;
- unsigned int num_read;
- int shift;
- unsigned char byte;
-
- result = 0;
- shift = 0;
- num_read = 0;
-
- do
- {
- byte = bfd_get_8 (abfd, buf);
- buf ++;
- num_read ++;
- result |= ((byte & 0x7f) << shift);
- shift += 7;
- }
- while (byte & 0x80);
-
- * bytes_read_ptr = num_read;
-
- return result;
-}
-
-static int
-read_signed_leb128 (bfd *abfd ATTRIBUTE_UNUSED,
- char *buf,
- unsigned int * bytes_read_ptr)
-{
- int result;
- int shift;
- int num_read;
- unsigned char byte;
-
- result = 0;
- shift = 0;
- num_read = 0;
-
- do
- {
- byte = bfd_get_8 (abfd, buf);
- buf ++;
- num_read ++;
- result |= ((byte & 0x7f) << shift);
- shift += 7;
- }
- while (byte & 0x80);
-
- if ((shift < 32) && (byte & 0x40))
- result |= -(1 << shift);
-
- * bytes_read_ptr = num_read;
-
- return result;
+ return str;
}
/* END VERBATIM */
static bfd_uint64_t
-read_address (struct comp_unit *unit, char *buf)
+read_address (struct comp_unit *unit, bfd_byte *buf)
{
switch (unit->addr_size)
{
read_abbrevs (bfd *abfd, bfd_uint64_t offset, struct dwarf2_debug *stash)
{
struct abbrev_info **abbrevs;
- char *abbrev_ptr;
+ bfd_byte *abbrev_ptr;
struct abbrev_info *cur_abbrev;
unsigned int abbrev_number, bytes_read, abbrev_name;
unsigned int abbrev_form, hash_number;
return 0;
}
- stash->dwarf_abbrev_size = msec->_raw_size;
+ stash->dwarf_abbrev_size = msec->size;
stash->dwarf_abbrev_buffer
= bfd_simple_get_relocated_section_contents (abfd, msec, NULL,
stash->syms);
/* Read an attribute value described by an attribute form. */
-static char *
+static bfd_byte *
read_attribute_value (struct attribute *attr,
unsigned form,
struct comp_unit *unit,
- char *info_ptr)
+ bfd_byte *info_ptr)
{
bfd *abfd = unit->abfd;
unsigned int bytes_read;
/* Read an attribute described by an abbreviated attribute. */
-static char *
+static bfd_byte *
read_attribute (struct attribute *attr,
struct attr_abbrev *abbrev,
struct comp_unit *unit,
- char *info_ptr)
+ bfd_byte *info_ptr)
{
attr->name = abbrev->name;
info_ptr = read_attribute_value (attr, abbrev->form, unit, info_ptr);
{
struct line_info* prev_line;
bfd_vma address;
- char* filename;
+ char *filename;
unsigned int line;
unsigned int column;
int end_sequence; /* End of (sequential) code sequence. */
bfd* abfd;
unsigned int num_files;
unsigned int num_dirs;
- char* comp_dir;
- char** dirs;
+ char *comp_dir;
+ char **dirs;
struct fileinfo* files;
struct line_info* last_line; /* largest VMA */
struct line_info* lcl_head; /* local head; used in 'add_line_info' */
struct funcinfo
{
struct funcinfo *prev_func;
- char* name;
+ char *name;
bfd_vma low;
bfd_vma high;
};
info->column = column;
info->end_sequence = end_sequence;
- amt = strlen (filename);
- if (amt)
+ if (filename && filename[0])
{
- info->filename = bfd_alloc (table->abfd, amt + 1);
+ info->filename = bfd_alloc (table->abfd, strlen (filename) + 1);
if (info->filename)
strcpy (info->filename, filename);
}
static char *
concat_filename (struct line_info_table *table, unsigned int file)
{
- char* filename;
+ char *filename;
if (file - 1 >= table->num_files)
{
if (! IS_ABSOLUTE_PATH (filename))
{
- char* dirname = (table->files[file - 1].dir
+ char *dirname = (table->files[file - 1].dir
? table->dirs[table->files[file - 1].dir - 1]
: table->comp_dir);
{
bfd *abfd = unit->abfd;
struct line_info_table* table;
- char *line_ptr;
- char *line_end;
+ bfd_byte *line_ptr;
+ bfd_byte *line_end;
struct line_head lh;
unsigned int i, bytes_read, offset_size;
char *cur_file, *cur_dir;
return 0;
}
- stash->dwarf_line_size = msec->_raw_size;
+ stash->dwarf_line_size = msec->size;
stash->dwarf_line_buffer
= bfd_simple_get_relocated_section_contents (abfd, msec, NULL,
stash->syms);
return FALSE;
}
+static char *
+find_abstract_instance_name (struct comp_unit *unit, bfd_uint64_t die_ref)
+{
+ bfd *abfd = unit->abfd;
+ bfd_byte *info_ptr;
+ unsigned int abbrev_number, bytes_read, i;
+ struct abbrev_info *abbrev;
+ struct attribute attr;
+ char *name = 0;
+
+ info_ptr = unit->info_ptr_unit + die_ref;
+ abbrev_number = read_unsigned_leb128 (abfd, info_ptr, &bytes_read);
+ info_ptr += bytes_read;
+
+ if (abbrev_number)
+ {
+ abbrev = lookup_abbrev (abbrev_number, unit->abbrevs);
+ if (! abbrev)
+ {
+ (*_bfd_error_handler) (_("Dwarf Error: Could not find abbrev number %u."),
+ abbrev_number);
+ bfd_set_error (bfd_error_bad_value);
+ }
+ else
+ {
+ for (i = 0; i < abbrev->num_attrs && !name; ++i)
+ {
+ info_ptr = read_attribute (&attr, &abbrev->attrs[i], unit, info_ptr);
+ switch (attr.name)
+ {
+ case DW_AT_name:
+ name = attr.u.str;
+ break;
+ case DW_AT_specification:
+ name = find_abstract_instance_name (unit, attr.u.val);
+ break;
+ default:
+ break;
+ }
+ }
+ }
+ }
+ return (name);
+}
+
/* DWARF2 Compilation unit functions. */
/* Scan over each die in a comp. unit looking for functions to add
scan_unit_for_functions (struct comp_unit *unit)
{
bfd *abfd = unit->abfd;
- char *info_ptr = unit->first_child_die_ptr;
+ bfd_byte *info_ptr = unit->first_child_die_ptr;
int nesting_level = 1;
while (nesting_level)
struct abbrev_info *abbrev;
struct attribute attr;
struct funcinfo *func;
- char* name = 0;
+ char *name = 0;
abbrev_number = read_unsigned_leb128 (abfd, info_ptr, &bytes_read);
info_ptr += bytes_read;
return FALSE;
}
- if (abbrev->tag == DW_TAG_subprogram)
+ if (abbrev->tag == DW_TAG_subprogram
+ || abbrev->tag == DW_TAG_inlined_subroutine)
{
bfd_size_type amt = sizeof (struct funcinfo);
func = bfd_zalloc (abfd, amt);
{
switch (attr.name)
{
+ case DW_AT_abstract_origin:
+ func->name = find_abstract_instance_name (unit, attr.u.val);
+ break;
+
case DW_AT_name:
name = attr.u.str;
parse_comp_unit (bfd *abfd,
struct dwarf2_debug *stash,
bfd_vma unit_length,
+ bfd_byte *info_ptr_unit,
unsigned int offset_size)
{
struct comp_unit* unit;
unsigned int abbrev_number, bytes_read, i;
struct abbrev_info *abbrev;
struct attribute attr;
- char *info_ptr = stash->info_ptr;
- char *end_ptr = info_ptr + unit_length;
+ bfd_byte *info_ptr = stash->info_ptr;
+ bfd_byte *end_ptr = info_ptr + unit_length;
bfd_size_type amt;
version = read_2_bytes (abfd, info_ptr);
unit->abbrevs = abbrevs;
unit->end_ptr = end_ptr;
unit->stash = stash;
+ unit->info_ptr_unit = info_ptr_unit;
for (i = 0; i < abbrev->num_attrs; ++i)
{
case DW_AT_comp_dir:
{
- char* comp_dir = attr.u.str;
+ char *comp_dir = attr.u.str;
if (comp_dir)
{
/* Irix 6.2 native cc prepends <machine>.: to the compilation
return NULL;
}
-/* The DWARF2 version of find_nearest line. Return TRUE if the line
+/* The DWARF2 version of find_nearest_line. Return TRUE if the line
is found without error. ADDR_SIZE is the number of bytes in the
initial .debug_info length field and in the abbreviation offset.
You may use zero to indicate that the default value should be
We keep a list of all the previously read compilation units, and
a pointer to the next un-read compilation unit. Check the
previously read units before reading more. */
- struct dwarf2_debug *stash = *pinfo;
+ struct dwarf2_debug *stash;
/* What address are we looking for? */
- bfd_vma addr = offset + section->vma;
+ bfd_vma addr;
struct comp_unit* each;
+ stash = *pinfo;
+ addr = offset;
+ if (section->output_section)
+ addr += section->output_section->vma + section->output_offset;
+ else
+ addr += section->vma;
*filename_ptr = NULL;
*functionname_ptr = NULL;
*linenumber_ptr = 0;
In the second pass we read in the section's contents. The allows
us to avoid reallocing the data as we add sections to the stash. */
for (total_size = 0; msec; msec = find_debug_info (abfd, msec))
- total_size += msec->_raw_size;
+ total_size += msec->size;
stash->info_ptr = bfd_alloc (abfd, total_size);
if (stash->info_ptr == NULL)
bfd_size_type size;
bfd_size_type start;
- size = msec->_raw_size;
+ size = msec->size;
if (size == 0)
continue;
bfd_vma length;
bfd_boolean found;
unsigned int offset_size = addr_size;
+ bfd_byte *info_ptr_unit = stash->info_ptr;
length = read_4_bytes (abfd, stash->info_ptr);
/* A 0xffffff length is the DWARF3 way of indicating we use
if (length > 0)
{
- each = parse_comp_unit (abfd, stash, length, offset_size);
+ each = parse_comp_unit (abfd, stash, length, info_ptr_unit,
+ offset_size);
stash->info_ptr += length;
if ((bfd_vma) (stash->info_ptr - stash->sec_info_ptr)
- == stash->sec->_raw_size)
+ == stash->sec->size)
{
stash->sec = find_debug_info (abfd, stash->sec);
stash->sec_info_ptr = stash->info_ptr;
projects / deliverable / binutils-gdb.git / blobdiff