/* DWARF 2 debugging format support for GDB.
- Copyright 1994, 1995, 1996, 1997, 1998 Free Software Foundation, Inc.
+ Copyright 1994, 1995, 1996, 1997, 1998, 2001
+ Free Software Foundation, Inc.
Adapted by Gary Funck (gary@intrepid.com), Intrepid Technology,
Inc. with support from Florida State University (under contract
#include "gdb_string.h"
#include <sys/types.h>
+#ifndef DWARF2_REG_TO_REGNUM
+#define DWARF2_REG_TO_REGNUM(REG) (REG)
+#endif
+
+#if 0
/* .debug_info header for a compilation unit
Because of alignment constraints, this structure has padding and cannot
be mapped directly onto the beginning of the .debug_info section. */
}
_COMP_UNIT_HEADER;
#define _ACTUAL_COMP_UNIT_HEADER_SIZE 11
+#endif
/* .debug_pubnames header
Because of alignment constraints, this structure has padding and cannot
/* local data types */
-/* The data in a compilation unit header looks like this. */
+/* The data in a compilation unit header, after target2host
+ translation, looks like this. */
struct comp_unit_head
{
- unsigned int length;
+ unsigned long length;
short version;
unsigned int abbrev_offset;
unsigned char addr_size;
+ unsigned char signed_addr_p;
+ unsigned int offset_size; /* size of file offsets; either 4 or 8 */
+ unsigned int initial_length_size; /* size of the length field; either
+ 4 or 12 */
};
/* The data in the .debug_line statement prologue looks like this. */
static struct die_info *die_ref_table[REF_HASH_SIZE];
-#ifndef TYPE_HASH_SIZE
-#define TYPE_HASH_SIZE 4096
-#endif
-static struct type *dwarf2_cached_types[TYPE_HASH_SIZE];
-
/* Obstack for allocating temporary storage used during symbol reading. */
static struct obstack dwarf2_tmp_obstack;
"unsupported const value attribute form: '%s'", 0, 0
};
-/* Remember the addr_size read from the dwarf.
- If a target expects to link compilation units with differing address
- sizes, gdb needs to be sure that the appropriate size is here for
- whatever scope is currently getting read. */
-static int address_size;
-
/* Externals references. */
extern int info_verbose; /* From main.c; nonzero => verbose */
static void dwarf2_build_psymtabs_hard (struct objfile *, int);
static char *scan_partial_symbols (char *, struct objfile *,
- CORE_ADDR *, CORE_ADDR *);
+ CORE_ADDR *, CORE_ADDR *,
+ const struct comp_unit_head *);
-static void add_partial_symbol (struct partial_die_info *, struct objfile *);
+static void add_partial_symbol (struct partial_die_info *, struct objfile *,
+ const struct comp_unit_head *);
static void dwarf2_psymtab_to_symtab (struct partial_symtab *);
static struct abbrev_info *dwarf2_lookup_abbrev (unsigned int);
static char *read_partial_die (struct partial_die_info *,
- bfd *, char *, int *);
+ bfd *, char *, int *,
+ const struct comp_unit_head *);
-static char *read_full_die (struct die_info **, bfd *, char *);
+static char *read_full_die (struct die_info **, bfd *, char *,
+ const struct comp_unit_head *);
static char *read_attribute (struct attribute *, struct attr_abbrev *,
- bfd *, char *);
+ bfd *, char *, const struct comp_unit_head *);
static unsigned int read_1_byte (bfd *, char *);
static unsigned long read_8_bytes (bfd *, char *);
-static CORE_ADDR read_address (bfd *, char *);
+static CORE_ADDR read_address (bfd *, char *ptr, const struct comp_unit_head *,
+ int *bytes_read);
+
+static LONGEST read_initial_length (bfd *, char *,
+ struct comp_unit_head *, int *bytes_read);
+
+static LONGEST read_offset (bfd *, char *, const struct comp_unit_head *,
+ int *bytes_read);
static char *read_n_bytes (bfd *, char *, unsigned int);
static int die_is_declaration (struct die_info *);
-static void dwarf_decode_lines (unsigned int, char *, bfd *);
+static void dwarf_decode_lines (unsigned int, char *, bfd *,
+ const struct comp_unit_head *);
static void dwarf2_start_subfile (char *, char *);
static struct symbol *new_symbol (struct die_info *, struct type *,
- struct objfile *);
+ struct objfile *, const struct comp_unit_head *);
static void dwarf2_const_value (struct attribute *, struct symbol *,
- struct objfile *);
+ struct objfile *, const struct comp_unit_head *);
static void dwarf2_const_value_data (struct attribute *attr,
struct symbol *sym,
int bits);
-static struct type *die_type (struct die_info *, struct objfile *);
+static struct type *die_type (struct die_info *, struct objfile *,
+ const struct comp_unit_head *);
-static struct type *die_containing_type (struct die_info *, struct objfile *);
+static struct type *die_containing_type (struct die_info *, struct objfile *,
+ const struct comp_unit_head *);
#if 0
static struct type *type_at_offset (unsigned int, struct objfile *);
#endif
-static struct type *tag_type_to_type (struct die_info *, struct objfile *);
+static struct type *tag_type_to_type (struct die_info *, struct objfile *,
+ const struct comp_unit_head *);
-static void read_type_die (struct die_info *, struct objfile *);
+static void read_type_die (struct die_info *, struct objfile *,
+ const struct comp_unit_head *);
-static void read_typedef (struct die_info *, struct objfile *);
+static void read_typedef (struct die_info *, struct objfile *,
+ const struct comp_unit_head *);
static void read_base_type (struct die_info *, struct objfile *);
-static void read_file_scope (struct die_info *, struct objfile *);
+static void read_file_scope (struct die_info *, struct objfile *,
+ const struct comp_unit_head *);
-static void read_func_scope (struct die_info *, struct objfile *);
+static void read_func_scope (struct die_info *, struct objfile *,
+ const struct comp_unit_head *);
-static void read_lexical_block_scope (struct die_info *, struct objfile *);
+static void read_lexical_block_scope (struct die_info *, struct objfile *,
+ const struct comp_unit_head *);
static int dwarf2_get_pc_bounds (struct die_info *,
CORE_ADDR *, CORE_ADDR *, struct objfile *);
static void dwarf2_add_field (struct field_info *, struct die_info *,
- struct objfile *);
+ struct objfile *, const struct comp_unit_head *);
static void dwarf2_attach_fields_to_type (struct field_info *,
struct type *, struct objfile *);
static void dwarf2_add_member_fn (struct field_info *,
struct die_info *, struct type *,
- struct objfile *objfile);
+ struct objfile *objfile,
+ const struct comp_unit_head *);
static void dwarf2_attach_fn_fields_to_type (struct field_info *,
struct type *, struct objfile *);
-static void read_structure_scope (struct die_info *, struct objfile *);
+static void read_structure_scope (struct die_info *, struct objfile *,
+ const struct comp_unit_head *);
-static void read_common_block (struct die_info *, struct objfile *);
+static void read_common_block (struct die_info *, struct objfile *,
+ const struct comp_unit_head *);
-static void read_enumeration (struct die_info *, struct objfile *);
+static void read_enumeration (struct die_info *, struct objfile *,
+ const struct comp_unit_head *);
static struct type *dwarf_base_type (int, int, struct objfile *);
-static CORE_ADDR decode_locdesc (struct dwarf_block *, struct objfile *);
+static CORE_ADDR decode_locdesc (struct dwarf_block *, struct objfile *,
+ const struct comp_unit_head *);
-static void read_array_type (struct die_info *, struct objfile *);
+static void read_array_type (struct die_info *, struct objfile *,
+ const struct comp_unit_head *);
-static void read_tag_pointer_type (struct die_info *, struct objfile *);
+static void read_tag_pointer_type (struct die_info *, struct objfile *,
+ const struct comp_unit_head *);
-static void read_tag_ptr_to_member_type (struct die_info *, struct objfile *);
+static void read_tag_ptr_to_member_type (struct die_info *, struct objfile *,
+ const struct comp_unit_head *);
-static void read_tag_reference_type (struct die_info *, struct objfile *);
+static void read_tag_reference_type (struct die_info *, struct objfile *,
+ const struct comp_unit_head *);
-static void read_tag_const_type (struct die_info *, struct objfile *);
+static void read_tag_const_type (struct die_info *, struct objfile *,
+ const struct comp_unit_head *);
-static void read_tag_volatile_type (struct die_info *, struct objfile *);
+static void read_tag_volatile_type (struct die_info *, struct objfile *,
+ const struct comp_unit_head *);
static void read_tag_string_type (struct die_info *, struct objfile *);
-static void read_subroutine_type (struct die_info *, struct objfile *);
+static void read_subroutine_type (struct die_info *, struct objfile *,
+ const struct comp_unit_head *);
-struct die_info *read_comp_unit (char *, bfd *);
+struct die_info *read_comp_unit (char *, bfd *, const struct comp_unit_head *);
static void free_die_list (struct die_info *);
static struct cleanup *make_cleanup_free_die_list (struct die_info *);
-static void process_die (struct die_info *, struct objfile *);
+static void process_die (struct die_info *, struct objfile *,
+ const struct comp_unit_head *);
static char *dwarf2_linkage_name (struct die_info *);
void store_in_ref_table (unsigned int, struct die_info *);
-static void dwarf2_empty_die_ref_table (void);
+static void dwarf2_empty_hash_tables (void);
static unsigned int dwarf2_get_ref_die_offset (struct attribute *);
information and return true if we have enough to do something. */
int
-dwarf2_has_info (abfd)
- bfd *abfd;
+dwarf2_has_info (bfd *abfd)
{
dwarf_info_offset = dwarf_abbrev_offset = dwarf_line_offset = 0;
bfd_map_over_sections (abfd, dwarf2_locate_sections, NULL);
in. */
static void
-dwarf2_locate_sections (ignore_abfd, sectp, ignore_ptr)
- bfd *ignore_abfd;
- asection *sectp;
- PTR ignore_ptr;
+dwarf2_locate_sections (bfd *ignore_abfd, asection *sectp, PTR ignore_ptr)
{
if (STREQ (sectp->name, INFO_SECTION))
{
/* Build a partial symbol table. */
void
-dwarf2_build_psymtabs (objfile, mainline)
- struct objfile *objfile;
- int mainline;
+dwarf2_build_psymtabs (struct objfile *objfile, int mainline)
{
/* We definitely need the .debug_info and .debug_abbrev sections */
.debug_pubnames and .debug_aranges sections. */
static void
-dwarf2_build_psymtabs_easy (objfile, mainline)
- struct objfile *objfile;
- int mainline;
+dwarf2_build_psymtabs_easy (struct objfile *objfile, int mainline)
{
bfd *abfd = objfile->obfd;
char *aranges_buffer, *pubnames_buffer;
pubnames_ptr = pubnames_buffer;
while ((pubnames_ptr - pubnames_buffer) < dwarf_pubnames_size)
{
- entry_length = read_4_bytes (abfd, pubnames_ptr);
- pubnames_ptr += 4;
+ struct comp_unit_head cu_header;
+ int bytes_read;
+
+ entry_length = read_initial_length (abfd, pubnames_ptr, &cu_header,
+ &bytes_read);
+ pubnames_ptr += bytes_read;
version = read_1_byte (abfd, pubnames_ptr);
pubnames_ptr += 1;
info_offset = read_4_bytes (abfd, pubnames_ptr);
}
#endif
+/* Read in the comp unit header information from the debug_info at
+ info_ptr. */
+
+static char *
+read_comp_unit_head (struct comp_unit_head *cu_header,
+ char *info_ptr, bfd *abfd)
+{
+ int signed_addr;
+ int bytes_read;
+ cu_header->length = read_initial_length (abfd, info_ptr, cu_header,
+ &bytes_read);
+ info_ptr += bytes_read;
+ cu_header->version = read_2_bytes (abfd, info_ptr);
+ info_ptr += 2;
+ cu_header->abbrev_offset = read_offset (abfd, info_ptr, cu_header,
+ &bytes_read);
+ info_ptr += bytes_read;
+ cu_header->addr_size = read_1_byte (abfd, info_ptr);
+ info_ptr += 1;
+ signed_addr = bfd_get_sign_extend_vma (abfd);
+ if (signed_addr < 0)
+ internal_error (__FILE__, __LINE__,
+ "read_comp_unit_head: dwarf from non elf file");
+ cu_header->signed_addr_p = signed_addr;
+ return info_ptr;
+}
+
/* Build the partial symbol table by doing a quick pass through the
.debug_info and .debug_abbrev sections. */
static void
-dwarf2_build_psymtabs_hard (objfile, mainline)
- struct objfile *objfile;
- int mainline;
+dwarf2_build_psymtabs_hard (struct objfile *objfile, int mainline)
{
/* Instead of reading this into a big buffer, we should probably use
mmap() on architectures that support it. (FIXME) */
bfd *abfd = objfile->obfd;
char *info_ptr, *abbrev_ptr;
char *beg_of_comp_unit;
- struct comp_unit_head cu_header;
struct partial_die_info comp_unit_die;
struct partial_symtab *pst;
struct cleanup *back_to;
while ((unsigned int) (info_ptr - dwarf_info_buffer)
+ ((info_ptr - dwarf_info_buffer) % 4) < dwarf_info_size)
{
+ struct comp_unit_head cu_header;
beg_of_comp_unit = info_ptr;
- cu_header.length = read_4_bytes (abfd, info_ptr);
- info_ptr += 4;
- cu_header.version = read_2_bytes (abfd, info_ptr);
- info_ptr += 2;
- cu_header.abbrev_offset = read_4_bytes (abfd, info_ptr);
- info_ptr += 4;
- cu_header.addr_size = read_1_byte (abfd, info_ptr);
- info_ptr += 1;
- address_size = cu_header.addr_size;
+ info_ptr = read_comp_unit_head (&cu_header, info_ptr, abfd);
if (cu_header.version != 2)
{
(long) (beg_of_comp_unit - dwarf_info_buffer));
return;
}
- if (beg_of_comp_unit + cu_header.length + 4
+ if (beg_of_comp_unit + cu_header.length + cu_header.initial_length_size
> dwarf_info_buffer + dwarf_info_size)
{
error ("Dwarf Error: bad length (0x%lx) in compilation unit header (offset 0x%lx + 0).",
make_cleanup (dwarf2_empty_abbrev_table, NULL);
/* Read the compilation unit die */
- info_ptr = read_partial_die (&comp_unit_die, abfd,
- info_ptr, &comp_unit_has_pc_info);
+ info_ptr = read_partial_die (&comp_unit_die, abfd, info_ptr,
+ &comp_unit_has_pc_info, &cu_header);
/* Set the language we're debugging */
set_cu_language (comp_unit_die.language);
DWARF_ABBREV_BUFFER (pst) = dwarf_abbrev_buffer;
DWARF_ABBREV_SIZE (pst) = dwarf_abbrev_size;
DWARF_LINE_BUFFER (pst) = dwarf_line_buffer;
- baseaddr = ANOFFSET (objfile->section_offsets, 0);
+ baseaddr = ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile));
/* Store the function that reads in the rest of the symbol table */
pst->read_symtab = dwarf2_psymtab_to_symtab;
If not, there's no more debug_info for this comp unit. */
if (comp_unit_die.has_children)
{
- info_ptr = scan_partial_symbols (info_ptr, objfile, &lowpc, &highpc);
+ info_ptr = scan_partial_symbols (info_ptr, objfile, &lowpc, &highpc,
+ &cu_header);
/* If the compilation unit didn't have an explicit address range,
then use the information extracted from its child dies. */
also happen.) This happens in VxWorks. */
free_named_symtabs (pst->filename);
- info_ptr = beg_of_comp_unit + cu_header.length + 4;
+ info_ptr = beg_of_comp_unit + cu_header.length
+ + cu_header.initial_length_size;
}
do_cleanups (back_to);
}
/* Read in all interesting dies to the end of the compilation unit. */
static char *
-scan_partial_symbols (info_ptr, objfile, lowpc, highpc)
- char *info_ptr;
- struct objfile *objfile;
- CORE_ADDR *lowpc;
- CORE_ADDR *highpc;
+scan_partial_symbols (char *info_ptr, struct objfile *objfile,
+ CORE_ADDR *lowpc, CORE_ADDR *highpc,
+ const struct comp_unit_head *cu_header)
{
bfd *abfd = objfile->obfd;
struct partial_die_info pdi;
while (nesting_level)
{
- info_ptr = read_partial_die (&pdi, abfd, info_ptr, &has_pc_info);
+ info_ptr = read_partial_die (&pdi, abfd, info_ptr,
+ &has_pc_info, cu_header);
if (pdi.name)
{
if ((pdi.is_external || nesting_level == 1)
&& !pdi.is_declaration)
{
- add_partial_symbol (&pdi, objfile);
+ add_partial_symbol (&pdi, objfile, cu_header);
}
}
break;
if ((pdi.is_external || nesting_level == 1)
&& !pdi.is_declaration)
{
- add_partial_symbol (&pdi, objfile);
+ add_partial_symbol (&pdi, objfile, cu_header);
}
break;
case DW_TAG_enumerator:
/* File scope enumerators are added to the partial symbol
table. */
if (nesting_level == 2)
- add_partial_symbol (&pdi, objfile);
+ add_partial_symbol (&pdi, objfile, cu_header);
break;
case DW_TAG_base_type:
/* File scope base type definitions are added to the partial
symbol table. */
if (nesting_level == 1)
- add_partial_symbol (&pdi, objfile);
+ add_partial_symbol (&pdi, objfile, cu_header);
break;
default:
break;
}
static void
-add_partial_symbol (pdi, objfile)
- struct partial_die_info *pdi;
- struct objfile *objfile;
+add_partial_symbol (struct partial_die_info *pdi, struct objfile *objfile,
+ const struct comp_unit_head *cu_header)
{
CORE_ADDR addr = 0;
table building. */
if (pdi->locdesc)
- addr = decode_locdesc (pdi->locdesc, objfile);
+ addr = decode_locdesc (pdi->locdesc, objfile, cu_header);
if (pdi->locdesc || pdi->has_type)
add_psymbol_to_list (pdi->name, strlen (pdi->name),
VAR_NAMESPACE, LOC_STATIC,
/* Static Variable. Skip symbols without location descriptors. */
if (pdi->locdesc == NULL)
return;
- addr = decode_locdesc (pdi->locdesc, objfile);
+ addr = decode_locdesc (pdi->locdesc, objfile, cu_header);
/*prim_record_minimal_symbol (pdi->name, addr + baseaddr,
mst_file_data, objfile); */
add_psymbol_to_list (pdi->name, strlen (pdi->name),
/* Expand this partial symbol table into a full symbol table. */
static void
-dwarf2_psymtab_to_symtab (pst)
- struct partial_symtab *pst;
+dwarf2_psymtab_to_symtab (struct partial_symtab *pst)
{
/* FIXME: This is barely more than a stub. */
if (pst != NULL)
}
static void
-psymtab_to_symtab_1 (pst)
- struct partial_symtab *pst;
+psymtab_to_symtab_1 (struct partial_symtab *pst)
{
struct objfile *objfile = pst->objfile;
bfd *abfd = objfile->obfd;
dwarf_abbrev_buffer = DWARF_ABBREV_BUFFER (pst);
dwarf_abbrev_size = DWARF_ABBREV_SIZE (pst);
dwarf_line_buffer = DWARF_LINE_BUFFER (pst);
- baseaddr = ANOFFSET (pst->section_offsets, 0);
+ baseaddr = ANOFFSET (pst->section_offsets, SECT_OFF_TEXT (objfile));
cu_header_offset = offset;
info_ptr = dwarf_info_buffer + offset;
make_cleanup (really_free_pendings, NULL);
/* read in the comp_unit header */
- cu_header.length = read_4_bytes (abfd, info_ptr);
- info_ptr += 4;
- cu_header.version = read_2_bytes (abfd, info_ptr);
- info_ptr += 2;
- cu_header.abbrev_offset = read_4_bytes (abfd, info_ptr);
- info_ptr += 4;
- cu_header.addr_size = read_1_byte (abfd, info_ptr);
- info_ptr += 1;
+ info_ptr = read_comp_unit_head (&cu_header, info_ptr, abfd);
/* Read the abbrevs for this compilation unit */
dwarf2_read_abbrevs (abfd, cu_header.abbrev_offset);
make_cleanup (dwarf2_empty_abbrev_table, NULL);
- dies = read_comp_unit (info_ptr, abfd);
+ dies = read_comp_unit (info_ptr, abfd, &cu_header);
make_cleanup_free_die_list (dies);
/* Do line number decoding in read_file_scope () */
- process_die (dies, objfile);
+ process_die (dies, objfile, &cu_header);
if (!dwarf2_get_pc_bounds (dies, &lowpc, &highpc, objfile))
{
}
}
}
- symtab = end_symtab (highpc + baseaddr, objfile, 0);
+ symtab = end_symtab (highpc + baseaddr, objfile, SECT_OFF_TEXT (objfile));
/* Set symtab language to language from DW_AT_language.
If the compilation is from a C file generated by language preprocessors,
/* Process a die and its children. */
static void
-process_die (die, objfile)
- struct die_info *die;
- struct objfile *objfile;
+process_die (struct die_info *die, struct objfile *objfile,
+ const struct comp_unit_head *cu_header)
{
switch (die->tag)
{
case DW_TAG_padding:
break;
case DW_TAG_compile_unit:
- read_file_scope (die, objfile);
+ read_file_scope (die, objfile, cu_header);
break;
case DW_TAG_subprogram:
- read_subroutine_type (die, objfile);
- read_func_scope (die, objfile);
+ read_subroutine_type (die, objfile, cu_header);
+ read_func_scope (die, objfile, cu_header);
break;
case DW_TAG_inlined_subroutine:
/* FIXME: These are ignored for now.
of a function and make GDB `next' properly over inlined functions. */
break;
case DW_TAG_lexical_block:
- read_lexical_block_scope (die, objfile);
+ read_lexical_block_scope (die, objfile, cu_header);
break;
case DW_TAG_class_type:
case DW_TAG_structure_type:
case DW_TAG_union_type:
- read_structure_scope (die, objfile);
+ read_structure_scope (die, objfile, cu_header);
break;
case DW_TAG_enumeration_type:
- read_enumeration (die, objfile);
+ read_enumeration (die, objfile, cu_header);
break;
case DW_TAG_subroutine_type:
- read_subroutine_type (die, objfile);
+ read_subroutine_type (die, objfile, cu_header);
break;
case DW_TAG_array_type:
- read_array_type (die, objfile);
+ read_array_type (die, objfile, cu_header);
break;
case DW_TAG_pointer_type:
- read_tag_pointer_type (die, objfile);
+ read_tag_pointer_type (die, objfile, cu_header);
break;
case DW_TAG_ptr_to_member_type:
- read_tag_ptr_to_member_type (die, objfile);
+ read_tag_ptr_to_member_type (die, objfile, cu_header);
break;
case DW_TAG_reference_type:
- read_tag_reference_type (die, objfile);
+ read_tag_reference_type (die, objfile, cu_header);
break;
case DW_TAG_string_type:
read_tag_string_type (die, objfile);
if (dwarf_attr (die, DW_AT_name))
{
/* Add a typedef symbol for the base type definition. */
- new_symbol (die, die->type, objfile);
+ new_symbol (die, die->type, objfile, cu_header);
}
break;
case DW_TAG_common_block:
- read_common_block (die, objfile);
+ read_common_block (die, objfile, cu_header);
break;
case DW_TAG_common_inclusion:
break;
default:
- new_symbol (die, NULL, objfile);
+ new_symbol (die, NULL, objfile, cu_header);
break;
}
}
static void
-read_file_scope (die, objfile)
- struct die_info *die;
- struct objfile *objfile;
+read_file_scope (struct die_info *die, struct objfile *objfile,
+ const struct comp_unit_head *cu_header)
{
unsigned int line_offset = 0;
CORE_ADDR lowpc = ((CORE_ADDR) -1);
if (attr)
{
line_offset = DW_UNSND (attr);
- dwarf_decode_lines (line_offset, comp_dir, abfd);
+ dwarf_decode_lines (line_offset, comp_dir, abfd, cu_header);
}
/* Process all dies in compilation unit. */
child_die = die->next;
while (child_die && child_die->tag)
{
- process_die (child_die, objfile);
+ process_die (child_die, objfile, cu_header);
child_die = sibling_die (child_die);
}
}
}
static void
-read_func_scope (die, objfile)
- struct die_info *die;
- struct objfile *objfile;
+read_func_scope (struct die_info *die, struct objfile *objfile,
+ const struct comp_unit_head *cu_header)
{
register struct context_stack *new;
CORE_ADDR lowpc;
attr = dwarf_attr (die, DW_AT_frame_base);
if (attr)
{
- CORE_ADDR addr = decode_locdesc (DW_BLOCK (attr), objfile);
+ CORE_ADDR addr = decode_locdesc (DW_BLOCK (attr), objfile, cu_header);
if (isderef)
complain (&dwarf2_unsupported_at_frame_base, name);
else if (isreg)
}
new = push_context (0, lowpc);
- new->name = new_symbol (die, die->type, objfile);
+ new->name = new_symbol (die, die->type, objfile, cu_header);
list_in_scope = &local_symbols;
if (die->has_children)
child_die = die->next;
while (child_die && child_die->tag)
{
- process_die (child_die, objfile);
+ process_die (child_die, objfile, cu_header);
child_die = sibling_die (child_die);
}
}
a new scope, process the dies, and then close the scope. */
static void
-read_lexical_block_scope (die, objfile)
- struct die_info *die;
- struct objfile *objfile;
+read_lexical_block_scope (struct die_info *die, struct objfile *objfile,
+ const struct comp_unit_head *cu_header)
{
register struct context_stack *new;
CORE_ADDR lowpc, highpc;
child_die = die->next;
while (child_die && child_die->tag)
{
- process_die (child_die, objfile);
+ process_die (child_die, objfile, cu_header);
child_die = sibling_die (child_die);
}
}
Return 1 if the attributes are present and valid, otherwise, return 0. */
static int
-dwarf2_get_pc_bounds (die, lowpc, highpc, objfile)
- struct die_info *die;
- CORE_ADDR *lowpc;
- CORE_ADDR *highpc;
- struct objfile *objfile;
+dwarf2_get_pc_bounds (struct die_info *die, CORE_ADDR *lowpc, CORE_ADDR *highpc,
+ struct objfile *objfile)
{
struct attribute *attr;
CORE_ADDR low;
/* Add an aggregate field to the field list. */
static void
-dwarf2_add_field (fip, die, objfile)
- struct field_info *fip;
- struct die_info *die;
- struct objfile *objfile;
+dwarf2_add_field (struct field_info *fip, struct die_info *die,
+ struct objfile *objfile,
+ const struct comp_unit_head *cu_header)
{
struct nextfield *new_field;
struct attribute *attr;
/* Allocate a new field list entry and link it in. */
new_field = (struct nextfield *) xmalloc (sizeof (struct nextfield));
- make_cleanup (free, new_field);
+ make_cleanup (xfree, new_field);
memset (new_field, 0, sizeof (struct nextfield));
new_field->next = fip->fields;
fip->fields = new_field;
if (die->tag == DW_TAG_member)
{
/* Get type of field. */
- fp->type = die_type (die, objfile);
+ fp->type = die_type (die, objfile, cu_header);
/* Get bit size of field (zero if none). */
attr = dwarf_attr (die, DW_AT_bit_size);
if (attr)
{
FIELD_BITPOS (*fp) =
- decode_locdesc (DW_BLOCK (attr), objfile) * bits_per_byte;
+ decode_locdesc (DW_BLOCK (attr), objfile, cu_header) * bits_per_byte;
}
else
FIELD_BITPOS (*fp) = 0;
SET_FIELD_PHYSNAME (*fp, obsavestring (physname, strlen (physname),
&objfile->type_obstack));
- FIELD_TYPE (*fp) = die_type (die, objfile);
+ FIELD_TYPE (*fp) = die_type (die, objfile, cu_header);
FIELD_NAME (*fp) = obsavestring (fieldname, strlen (fieldname),
&objfile->type_obstack);
}
/* C++ base class field. */
attr = dwarf_attr (die, DW_AT_data_member_location);
if (attr)
- FIELD_BITPOS (*fp) = decode_locdesc (DW_BLOCK (attr), objfile) * bits_per_byte;
+ FIELD_BITPOS (*fp) = (decode_locdesc (DW_BLOCK (attr), objfile, cu_header)
+ * bits_per_byte);
FIELD_BITSIZE (*fp) = 0;
- FIELD_TYPE (*fp) = die_type (die, objfile);
+ FIELD_TYPE (*fp) = die_type (die, objfile, cu_header);
FIELD_NAME (*fp) = type_name_no_tag (fp->type);
fip->nbaseclasses++;
}
/* Create the vector of fields, and attach it to the type. */
static void
-dwarf2_attach_fields_to_type (fip, type, objfile)
- struct field_info *fip;
- struct type *type;
- struct objfile *objfile;
+dwarf2_attach_fields_to_type (struct field_info *fip, struct type *type,
+ struct objfile *objfile)
{
int nfields = fip->nfields;
/* Add a member function to the proper fieldlist. */
static void
-dwarf2_add_member_fn (fip, die, type, objfile)
- struct field_info *fip;
- struct die_info *die;
- struct type *type;
- struct objfile *objfile;
+dwarf2_add_member_fn (struct field_info *fip, struct die_info *die,
+ struct type *type, struct objfile *objfile,
+ const struct comp_unit_head *cu_header)
{
struct attribute *attr;
struct fnfieldlist *flp;
/* Create a new member function field and chain it to the field list
entry. */
new_fnfield = (struct nextfnfield *) xmalloc (sizeof (struct nextfnfield));
- make_cleanup (free, new_fnfield);
+ make_cleanup (xfree, new_fnfield);
memset (new_fnfield, 0, sizeof (struct nextfnfield));
new_fnfield->next = flp->head;
flp->head = new_fnfield;
/* Get fcontext from DW_AT_containing_type if present. */
if (dwarf_attr (die, DW_AT_containing_type) != NULL)
- fnp->fcontext = die_containing_type (die, objfile);
+ fnp->fcontext = die_containing_type (die, objfile, cu_header);
/* dwarf2 doesn't have stubbed physical names, so the setting of is_const
and is_volatile is irrelevant, as it is needed by gdb_mangle_name only. */
/* Get index in virtual function table if it is a virtual member function. */
attr = dwarf_attr (die, DW_AT_vtable_elem_location);
if (attr)
- fnp->voffset = decode_locdesc (DW_BLOCK (attr), objfile) + 2;
+ fnp->voffset = decode_locdesc (DW_BLOCK (attr), objfile, cu_header) + 2;
}
/* Create the vector of member function fields, and attach it to the type. */
static void
-dwarf2_attach_fn_fields_to_type (fip, type, objfile)
- struct field_info *fip;
- struct type *type;
- struct objfile *objfile;
+dwarf2_attach_fn_fields_to_type (struct field_info *fip, struct type *type,
+ struct objfile *objfile)
{
struct fnfieldlist *flp;
int total_length = 0;
suppresses creating a symbol table entry itself). */
static void
-read_structure_scope (die, objfile)
- struct die_info *die;
- struct objfile *objfile;
+read_structure_scope (struct die_info *die, struct objfile *objfile,
+ const struct comp_unit_head *cu_header)
{
struct type *type;
struct attribute *attr;
{
if (child_die->tag == DW_TAG_member)
{
- dwarf2_add_field (&fi, child_die, objfile);
+ dwarf2_add_field (&fi, child_die, objfile, cu_header);
}
else if (child_die->tag == DW_TAG_variable)
{
/* C++ static member. */
- dwarf2_add_field (&fi, child_die, objfile);
+ dwarf2_add_field (&fi, child_die, objfile, cu_header);
}
else if (child_die->tag == DW_TAG_subprogram)
{
/* C++ member function. */
- process_die (child_die, objfile);
- dwarf2_add_member_fn (&fi, child_die, type, objfile);
+ process_die (child_die, objfile, cu_header);
+ dwarf2_add_member_fn (&fi, child_die, type, objfile, cu_header);
}
else if (child_die->tag == DW_TAG_inheritance)
{
/* C++ base class field. */
- dwarf2_add_field (&fi, child_die, objfile);
+ dwarf2_add_field (&fi, child_die, objfile, cu_header);
}
else
{
- process_die (child_die, objfile);
+ process_die (child_die, objfile, cu_header);
}
child_die = sibling_die (child_die);
}
if (dwarf_attr (die, DW_AT_containing_type) != NULL)
{
- struct type *t = die_containing_type (die, objfile);
+ struct type *t = die_containing_type (die, objfile, cu_header);
TYPE_VPTR_BASETYPE (type) = t;
if (type == t)
}
}
- new_symbol (die, type, objfile);
+ new_symbol (die, type, objfile, cu_header);
do_cleanups (back_to);
}
NOTE: We reverse the order of the element list. */
static void
-read_enumeration (die, objfile)
- struct die_info *die;
- struct objfile *objfile;
+read_enumeration (struct die_info *die, struct objfile *objfile,
+ const struct comp_unit_head *cu_header)
{
struct die_info *child_die;
struct type *type;
{
if (child_die->tag != DW_TAG_enumerator)
{
- process_die (child_die, objfile);
+ process_die (child_die, objfile, cu_header);
}
else
{
attr = dwarf_attr (child_die, DW_AT_name);
if (attr)
{
- sym = new_symbol (child_die, type, objfile);
+ sym = new_symbol (child_die, type, objfile, cu_header);
if (SYMBOL_VALUE (sym) < 0)
unsigned_enum = 0;
TYPE_ALLOC (type, sizeof (struct field) * num_fields);
memcpy (TYPE_FIELDS (type), fields,
sizeof (struct field) * num_fields);
- free (fields);
+ xfree (fields);
}
if (unsigned_enum)
TYPE_FLAGS (type) |= TYPE_FLAG_UNSIGNED;
}
die->type = type;
- new_symbol (die, type, objfile);
+ new_symbol (die, type, objfile, cu_header);
}
/* Extract all information from a DW_TAG_array_type DIE and put it in
arrays. */
static void
-read_array_type (die, objfile)
- struct die_info *die;
- struct objfile *objfile;
+read_array_type (struct die_info *die, struct objfile *objfile,
+ const struct comp_unit_head *cu_header)
{
struct die_info *child_die;
struct type *type = NULL;
return;
}
- element_type = die_type (die, objfile);
+ element_type = die_type (die, objfile, cu_header);
/* Irix 6.2 native cc creates array types without children for
arrays with unspecified length. */
low = 1;
}
- index_type = die_type (child_die, objfile);
+ index_type = die_type (child_die, objfile, cu_header);
attr = dwarf_attr (child_die, DW_AT_lower_bound);
if (attr)
{
/* First cut: install each common block member as a global variable. */
static void
-read_common_block (die, objfile)
- struct die_info *die;
- struct objfile *objfile;
+read_common_block (struct die_info *die, struct objfile *objfile,
+ const struct comp_unit_head *cu_header)
{
struct die_info *child_die;
struct attribute *attr;
attr = dwarf_attr (die, DW_AT_location);
if (attr)
{
- base = decode_locdesc (DW_BLOCK (attr), objfile);
+ base = decode_locdesc (DW_BLOCK (attr), objfile, cu_header);
}
if (die->has_children)
{
child_die = die->next;
while (child_die && child_die->tag)
{
- sym = new_symbol (child_die, NULL, objfile);
+ sym = new_symbol (child_die, NULL, objfile, cu_header);
attr = dwarf_attr (child_die, DW_AT_data_member_location);
if (attr)
{
SYMBOL_VALUE_ADDRESS (sym) =
- base + decode_locdesc (DW_BLOCK (attr), objfile);
+ base + decode_locdesc (DW_BLOCK (attr), objfile, cu_header);
add_symbol_to_list (sym, &global_symbols);
}
child_die = sibling_die (child_die);
the user defined type vector. */
static void
-read_tag_pointer_type (die, objfile)
- struct die_info *die;
- struct objfile *objfile;
+read_tag_pointer_type (struct die_info *die, struct objfile *objfile,
+ const struct comp_unit_head *cu_header)
{
struct type *type;
struct attribute *attr;
return;
}
- type = lookup_pointer_type (die_type (die, objfile));
+ type = lookup_pointer_type (die_type (die, objfile, cu_header));
attr = dwarf_attr (die, DW_AT_byte_size);
if (attr)
{
}
else
{
- TYPE_LENGTH (type) = address_size;
+ TYPE_LENGTH (type) = cu_header->addr_size;
}
die->type = type;
}
the user defined type vector. */
static void
-read_tag_ptr_to_member_type (die, objfile)
- struct die_info *die;
- struct objfile *objfile;
+read_tag_ptr_to_member_type (struct die_info *die, struct objfile *objfile,
+ const struct comp_unit_head *cu_header)
{
struct type *type;
struct type *to_type;
}
type = alloc_type (objfile);
- to_type = die_type (die, objfile);
- domain = die_containing_type (die, objfile);
+ to_type = die_type (die, objfile, cu_header);
+ domain = die_containing_type (die, objfile, cu_header);
smash_to_member_type (type, domain, to_type);
die->type = type;
the user defined type vector. */
static void
-read_tag_reference_type (die, objfile)
- struct die_info *die;
- struct objfile *objfile;
+read_tag_reference_type (struct die_info *die, struct objfile *objfile,
+ const struct comp_unit_head *cu_header)
{
struct type *type;
struct attribute *attr;
return;
}
- type = lookup_reference_type (die_type (die, objfile));
+ type = lookup_reference_type (die_type (die, objfile, cu_header));
attr = dwarf_attr (die, DW_AT_byte_size);
if (attr)
{
}
else
{
- TYPE_LENGTH (type) = address_size;
+ TYPE_LENGTH (type) = cu_header->addr_size;
}
die->type = type;
}
static void
-read_tag_const_type (die, objfile)
- struct die_info *die;
- struct objfile *objfile;
+read_tag_const_type (struct die_info *die, struct objfile *objfile,
+ const struct comp_unit_head *cu_header)
{
+ struct type *base_type;
+
if (die->type)
{
return;
}
- complain (&dwarf2_const_ignored);
- die->type = die_type (die, objfile);
+ base_type = die_type (die, objfile, cu_header);
+ die->type = make_cv_type (1, TYPE_VOLATILE (base_type), base_type, 0);
}
static void
-read_tag_volatile_type (die, objfile)
- struct die_info *die;
- struct objfile *objfile;
+read_tag_volatile_type (struct die_info *die, struct objfile *objfile,
+ const struct comp_unit_head *cu_header)
{
+ struct type *base_type;
+
if (die->type)
{
return;
}
- complain (&dwarf2_volatile_ignored);
- die->type = die_type (die, objfile);
+ base_type = die_type (die, objfile, cu_header);
+ die->type = make_cv_type (TYPE_CONST (base_type), 1, base_type, 0);
}
/* Extract all information from a DW_TAG_string_type DIE and add to
attribute to reference it. */
static void
-read_tag_string_type (die, objfile)
- struct die_info *die;
- struct objfile *objfile;
+read_tag_string_type (struct die_info *die, struct objfile *objfile)
{
struct type *type, *range_type, *index_type, *char_type;
struct attribute *attr;
*/
static void
-read_subroutine_type (die, objfile)
- struct die_info *die;
- struct objfile *objfile;
+read_subroutine_type (struct die_info *die, struct objfile *objfile,
+ const struct comp_unit_head *cu_header)
{
struct type *type; /* Type that this function returns */
struct type *ftype; /* Function that returns above type */
{
return;
}
- type = die_type (die, objfile);
+ type = die_type (die, objfile, cu_header);
ftype = lookup_function_type (type);
/* All functions in C++ have prototypes. */
TYPE_FIELD_ARTIFICIAL (ftype, iparams) = DW_UNSND (attr);
else
TYPE_FIELD_ARTIFICIAL (ftype, iparams) = 0;
- TYPE_FIELD_TYPE (ftype, iparams) = die_type (child_die, objfile);
+ TYPE_FIELD_TYPE (ftype, iparams) = die_type (child_die, objfile,
+ cu_header);
iparams++;
}
child_die = sibling_die (child_die);
}
static void
-read_typedef (die, objfile)
- struct die_info *die;
- struct objfile *objfile;
+read_typedef (struct die_info *die, struct objfile *objfile,
+ const struct comp_unit_head *cu_header)
{
struct type *type;
struct attribute *attr;
struct type *xtype;
- xtype = die_type (die, objfile);
+ xtype = die_type (die, objfile, cu_header);
type = alloc_type (objfile);
TYPE_CODE (type) = TYPE_CODE_TYPEDEF;
it in the TYPE field of the die. */
static void
-read_base_type (die, objfile)
- struct die_info *die;
- struct objfile *objfile;
+read_base_type (struct die_info *die, struct objfile *objfile)
{
struct type *type;
struct attribute *attr;
/* Read a whole compilation unit into a linked list of dies. */
struct die_info *
-read_comp_unit (info_ptr, abfd)
- char *info_ptr;
- bfd *abfd;
+read_comp_unit (char *info_ptr, bfd *abfd,
+ const struct comp_unit_head *cu_header)
{
struct die_info *first_die, *last_die, *die;
char *cur_ptr;
int nesting_level;
- /* Reset die reference table, we are building a new one now. */
- dwarf2_empty_die_ref_table ();
+ /* Reset die reference table; we are
+ building new ones now. */
+ dwarf2_empty_hash_tables ();
cur_ptr = info_ptr;
nesting_level = 0;
first_die = last_die = NULL;
do
{
- cur_ptr = read_full_die (&die, abfd, cur_ptr);
+ cur_ptr = read_full_die (&die, abfd, cur_ptr, cu_header);
if (die->has_children)
{
nesting_level++;
/* Free a linked list of dies. */
static void
-free_die_list (dies)
- struct die_info *dies;
+free_die_list (struct die_info *dies)
{
struct die_info *die, *next;
while (die)
{
next = die->next;
- free (die->attrs);
- free (die);
+ xfree (die->attrs);
+ xfree (die);
die = next;
}
}
object file specified by OBJFILE into the psymbol_obstack and return it. */
static char *
-dwarf2_read_section (objfile, offset, size)
- struct objfile *objfile;
- file_ptr offset;
- unsigned int size;
+dwarf2_read_section (struct objfile *objfile, file_ptr offset,
+ unsigned int size)
{
bfd *abfd = objfile->obfd;
char *buf;
in a hash table. */
static void
-dwarf2_read_abbrevs (abfd, offset)
- bfd *abfd;
- unsigned int offset;
+dwarf2_read_abbrevs (bfd *abfd, unsigned int offset)
{
char *abbrev_ptr;
struct abbrev_info *cur_abbrev;
/* ARGSUSED */
static void
-dwarf2_empty_abbrev_table (ignore)
- PTR ignore;
+dwarf2_empty_abbrev_table (PTR ignore)
{
int i;
struct abbrev_info *abbrev, *next;
while (abbrev)
{
next = abbrev->next;
- free (abbrev->attrs);
- free (abbrev);
+ xfree (abbrev->attrs);
+ xfree (abbrev);
abbrev = next;
}
dwarf2_abbrevs[i] = NULL;
/* Lookup an abbrev_info structure in the abbrev hash table. */
static struct abbrev_info *
-dwarf2_lookup_abbrev (number)
- unsigned int number;
+dwarf2_lookup_abbrev (unsigned int number)
{
unsigned int hash_number;
struct abbrev_info *abbrev;
/* Read a minimal amount of information into the minimal die structure. */
static char *
-read_partial_die (part_die, abfd, info_ptr, has_pc_info)
- struct partial_die_info *part_die;
- bfd *abfd;
- char *info_ptr;
- int *has_pc_info;
+read_partial_die (struct partial_die_info *part_die, bfd *abfd,
+ char *info_ptr, int *has_pc_info,
+ const struct comp_unit_head *cu_header)
{
unsigned int abbrev_number, bytes_read, i;
struct abbrev_info *abbrev;
for (i = 0; i < abbrev->num_attrs; ++i)
{
- info_ptr = read_attribute (&attr, &abbrev->attrs[i], abfd, info_ptr);
+ info_ptr = read_attribute (&attr, &abbrev->attrs[i], abfd,
+ info_ptr, cu_header);
/* Store the data if it is of an attribute we want to keep in a
partial symbol table. */
int dummy;
spec_ptr = dwarf_info_buffer + dwarf2_get_ref_die_offset (&spec_attr);
- read_partial_die (&spec_die, abfd, spec_ptr, &dummy);
+ read_partial_die (&spec_die, abfd, spec_ptr, &dummy, cu_header);
if (spec_die.name)
{
part_die->name = spec_die.name;
point to a newly allocated die with its information. */
static char *
-read_full_die (diep, abfd, info_ptr)
- struct die_info **diep;
- bfd *abfd;
- char *info_ptr;
+read_full_die (struct die_info **diep, bfd *abfd, char *info_ptr,
+ const struct comp_unit_head *cu_header)
{
unsigned int abbrev_number, bytes_read, i, offset;
struct abbrev_info *abbrev;
for (i = 0; i < abbrev->num_attrs; ++i)
{
info_ptr = read_attribute (&die->attrs[i], &abbrev->attrs[i],
- abfd, info_ptr);
+ abfd, info_ptr, cu_header);
}
*diep = die;
/* Read an attribute described by an abbreviated attribute. */
static char *
-read_attribute (attr, abbrev, abfd, info_ptr)
- struct attribute *attr;
- struct attr_abbrev *abbrev;
- bfd *abfd;
- char *info_ptr;
+read_attribute (struct attribute *attr, struct attr_abbrev *abbrev,
+ bfd *abfd, char *info_ptr,
+ const struct comp_unit_head *cu_header)
{
unsigned int bytes_read;
struct dwarf_block *blk;
{
case DW_FORM_addr:
case DW_FORM_ref_addr:
- DW_ADDR (attr) = read_address (abfd, info_ptr);
- info_ptr += address_size;
+ DW_ADDR (attr) = read_address (abfd, info_ptr, cu_header, &bytes_read);
+ info_ptr += bytes_read;
break;
case DW_FORM_block2:
blk = dwarf_alloc_block ();
DW_UNSND (attr) = read_4_bytes (abfd, info_ptr);
info_ptr += 4;
break;
+ case DW_FORM_ref8:
+ DW_UNSND (attr) = read_8_bytes (abfd, info_ptr);
+ info_ptr += 8;
+ break;
case DW_FORM_ref_udata:
DW_UNSND (attr) = read_unsigned_leb128 (abfd, info_ptr, &bytes_read);
info_ptr += bytes_read;
/* read dwarf information from a buffer */
static unsigned int
-read_1_byte (abfd, buf)
- bfd *abfd;
- char *buf;
+read_1_byte (bfd *abfd, char *buf)
{
return bfd_get_8 (abfd, (bfd_byte *) buf);
}
static int
-read_1_signed_byte (abfd, buf)
- bfd *abfd;
- char *buf;
+read_1_signed_byte (bfd *abfd, char *buf)
{
return bfd_get_signed_8 (abfd, (bfd_byte *) buf);
}
static unsigned int
-read_2_bytes (abfd, buf)
- bfd *abfd;
- char *buf;
+read_2_bytes (bfd *abfd, char *buf)
{
return bfd_get_16 (abfd, (bfd_byte *) buf);
}
static int
-read_2_signed_bytes (abfd, buf)
- bfd *abfd;
- char *buf;
+read_2_signed_bytes (bfd *abfd, char *buf)
{
return bfd_get_signed_16 (abfd, (bfd_byte *) buf);
}
static unsigned int
-read_4_bytes (abfd, buf)
- bfd *abfd;
- char *buf;
+read_4_bytes (bfd *abfd, char *buf)
{
return bfd_get_32 (abfd, (bfd_byte *) buf);
}
static int
-read_4_signed_bytes (abfd, buf)
- bfd *abfd;
- char *buf;
+read_4_signed_bytes (bfd *abfd, char *buf)
{
return bfd_get_signed_32 (abfd, (bfd_byte *) buf);
}
static unsigned long
-read_8_bytes (abfd, buf)
- bfd *abfd;
- char *buf;
+read_8_bytes (bfd *abfd, char *buf)
{
return bfd_get_64 (abfd, (bfd_byte *) buf);
}
static CORE_ADDR
-read_address (abfd, buf)
- bfd *abfd;
- char *buf;
+read_address (bfd *abfd, char *buf, const struct comp_unit_head *cu_header,
+ int *bytes_read)
{
CORE_ADDR retval = 0;
- switch (address_size)
+ if (cu_header->signed_addr_p)
+ {
+ switch (cu_header->addr_size)
+ {
+ case 2:
+ retval = bfd_get_signed_16 (abfd, (bfd_byte *) buf);
+ break;
+ case 4:
+ retval = bfd_get_signed_32 (abfd, (bfd_byte *) buf);
+ break;
+ case 8:
+ retval = bfd_get_signed_64 (abfd, (bfd_byte *) buf);
+ break;
+ default:
+ internal_error (__FILE__, __LINE__,
+ "read_address: bad switch, signed");
+ }
+ }
+ else
+ {
+ switch (cu_header->addr_size)
+ {
+ case 2:
+ retval = bfd_get_16 (abfd, (bfd_byte *) buf);
+ break;
+ case 4:
+ retval = bfd_get_32 (abfd, (bfd_byte *) buf);
+ break;
+ case 8:
+ retval = bfd_get_64 (abfd, (bfd_byte *) buf);
+ break;
+ default:
+ internal_error (__FILE__, __LINE__,
+ "read_address: bad switch, unsigned");
+ }
+ }
+
+ *bytes_read = cu_header->addr_size;
+ return retval;
+}
+
+/* Reads the initial length from a section. The (draft) DWARF 2.1
+ specification allows the initial length to take up either 4 bytes
+ or 12 bytes. If the first 4 bytes are 0xffffffff, then the next 8
+ bytes describe the length and all offsets will be 8 bytes in length
+ instead of 4.
+
+ The value returned via bytes_read should be used to increment
+ the relevant pointer after calling read_initial_length().
+
+ As a side effect, this function sets the fields initial_length_size
+ and offset_size in cu_header to the values appropriate for the
+ length field. (The format of the initial length field determines
+ the width of file offsets to be fetched later with fetch_offset().)
+
+ [ Note: read_initial_length() and read_offset() are based on the
+ document entitled "DWARF Debugging Information Format", revision
+ 2.1, draft 4, dated July 20, 2000. This document was obtained
+ from:
+
+ http://reality.sgi.com/dehnert_engr/dwarf/dwarf2p1-draft4-000720.pdf
+
+ This document is only a draft and is subject to change. (So beware.)
+
+ - Kevin, Aug 4, 2000
+ ] */
+
+static LONGEST
+read_initial_length (bfd *abfd, char *buf, struct comp_unit_head *cu_header,
+ int *bytes_read)
+{
+ LONGEST retval = 0;
+
+ retval = bfd_get_32 (abfd, (bfd_byte *) buf);
+
+ if (retval == 0xffffffff)
+ {
+ retval = bfd_get_64 (abfd, (bfd_byte *) buf + 4);
+ *bytes_read = 12;
+ if (cu_header != NULL)
+ {
+ cu_header->initial_length_size = 12;
+ cu_header->offset_size = 8;
+ }
+ }
+ else
+ {
+ *bytes_read = 4;
+ if (cu_header != NULL)
+ {
+ cu_header->initial_length_size = 4;
+ cu_header->offset_size = 4;
+ }
+ }
+
+ return retval;
+}
+
+/* Read an offset from the data stream. The size of the offset is
+ given by cu_header->offset_size. */
+
+static LONGEST
+read_offset (bfd *abfd, char *buf, const struct comp_unit_head *cu_header,
+ int *bytes_read)
+{
+ LONGEST retval = 0;
+
+ switch (cu_header->offset_size)
{
- case 2:
- retval = bfd_get_16 (abfd, (bfd_byte *) buf);
- break;
case 4:
retval = bfd_get_32 (abfd, (bfd_byte *) buf);
+ *bytes_read = 4;
break;
case 8:
retval = bfd_get_64 (abfd, (bfd_byte *) buf);
+ *bytes_read = 8;
break;
default:
- /* *THE* alternative is 8, right? */
- abort ();
+ internal_error (__FILE__, __LINE__,
+ "read_offset: bad switch");
}
return retval;
}
static char *
-read_n_bytes (abfd, buf, size)
- bfd *abfd;
- char *buf;
- unsigned int size;
+read_n_bytes (bfd *abfd, char *buf, unsigned int size)
{
/* 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
}
static char *
-read_string (abfd, buf, bytes_read_ptr)
- bfd *abfd;
- char *buf;
- unsigned int *bytes_read_ptr;
+read_string (bfd *abfd, char *buf, unsigned int *bytes_read_ptr)
{
/* If the size of a host char is 8 bits, we can return a pointer
to the string, otherwise we have to copy the string to a buffer
}
static unsigned long
-read_unsigned_leb128 (abfd, buf, bytes_read_ptr)
- bfd *abfd;
- char *buf;
- unsigned int *bytes_read_ptr;
+read_unsigned_leb128 (bfd *abfd, char *buf, unsigned int *bytes_read_ptr)
{
unsigned long result;
unsigned int num_read;
}
static long
-read_signed_leb128 (abfd, buf, bytes_read_ptr)
- bfd *abfd;
- char *buf;
- unsigned int *bytes_read_ptr;
+read_signed_leb128 (bfd *abfd, char *buf, unsigned int *bytes_read_ptr)
{
long result;
int i, shift, size, num_read;
}
static void
-set_cu_language (lang)
- unsigned int lang;
+set_cu_language (unsigned int lang)
{
switch (lang)
{
/* Return the named attribute or NULL if not there. */
static struct attribute *
-dwarf_attr (die, name)
- struct die_info *die;
- unsigned int name;
+dwarf_attr (struct die_info *die, unsigned int name)
{
unsigned int i;
struct attribute *spec = NULL;
};
static void
-dwarf_decode_lines (offset, comp_dir, abfd)
- unsigned int offset;
- char *comp_dir;
- bfd *abfd;
+dwarf_decode_lines (unsigned int offset, char *comp_dir, bfd *abfd,
+ const struct comp_unit_head *cu_header)
{
char *line_ptr;
char *line_end;
line_ptr = dwarf_line_buffer + offset;
/* read in the prologue */
- lh.total_length = read_4_bytes (abfd, line_ptr);
- line_ptr += 4;
+ lh.total_length = read_initial_length (abfd, line_ptr, NULL, &bytes_read);
+ line_ptr += bytes_read;
line_end = line_ptr + lh.total_length;
lh.version = read_2_bytes (abfd, line_ptr);
line_ptr += 2;
- lh.prologue_length = read_4_bytes (abfd, line_ptr);
- line_ptr += 4;
+ lh.prologue_length = read_offset (abfd, line_ptr, cu_header, &bytes_read);
+ line_ptr += bytes_read;
lh.minimum_instruction_length = read_1_byte (abfd, line_ptr);
line_ptr += 1;
lh.default_is_stmt = read_1_byte (abfd, line_ptr);
not the ends. This is a weakness of GDB. */
break;
case DW_LNE_set_address:
- address = read_address (abfd, line_ptr) + baseaddr;
- line_ptr += address_size;
+ address = read_address (abfd, line_ptr, cu_header, &bytes_read);
+ line_ptr += bytes_read;
+ address += baseaddr;
break;
case DW_LNE_define_file:
cur_file = read_string (abfd, line_ptr, &bytes_read);
subfile, so that `break /srcdir/list0.c:1' works as expected. */
static void
-dwarf2_start_subfile (filename, dirname)
- char *filename;
- char *dirname;
+dwarf2_start_subfile (char *filename, char *dirname)
{
/* If the filename isn't absolute, try to match an existing subfile
with the full pathname. */
if (STREQ (subfile->name, fullname))
{
current_subfile = subfile;
- free (fullname);
+ xfree (fullname);
return;
}
}
- free (fullname);
+ xfree (fullname);
}
start_subfile (filename, dirname);
}
used the passed type. */
static struct symbol *
-new_symbol (die, type, objfile)
- struct die_info *die;
- struct type *type;
- struct objfile *objfile;
+new_symbol (struct die_info *die, struct type *type, struct objfile *objfile,
+ const struct comp_unit_head *cu_header)
{
struct symbol *sym = NULL;
char *name;
if (type != NULL)
SYMBOL_TYPE (sym) = type;
else
- SYMBOL_TYPE (sym) = die_type (die, objfile);
+ SYMBOL_TYPE (sym) = die_type (die, objfile, cu_header);
attr = dwarf_attr (die, DW_AT_decl_line);
if (attr)
{
attr = dwarf_attr (die, DW_AT_const_value);
if (attr)
{
- dwarf2_const_value (attr, sym, objfile);
+ dwarf2_const_value (attr, sym, objfile, cu_header);
attr2 = dwarf_attr (die, DW_AT_external);
if (attr2 && (DW_UNSND (attr2) != 0))
add_symbol_to_list (sym, &global_symbols);
if (attr2 && (DW_UNSND (attr2) != 0))
{
SYMBOL_VALUE_ADDRESS (sym) =
- decode_locdesc (DW_BLOCK (attr), objfile);
+ decode_locdesc (DW_BLOCK (attr), objfile, cu_header);
add_symbol_to_list (sym, &global_symbols);
/* In shared libraries the address of the variable
the variable is referenced. */
if (SYMBOL_VALUE_ADDRESS (sym))
{
- SYMBOL_VALUE_ADDRESS (sym) += baseaddr;
+ fixup_symbol_section (sym, objfile);
+ SYMBOL_VALUE_ADDRESS (sym) +=
+ ANOFFSET (objfile->section_offsets,
+ SYMBOL_SECTION (sym));
SYMBOL_CLASS (sym) = LOC_STATIC;
}
else
else
{
SYMBOL_VALUE (sym) = addr =
- decode_locdesc (DW_BLOCK (attr), objfile);
+ decode_locdesc (DW_BLOCK (attr), objfile, cu_header);
add_symbol_to_list (sym, list_in_scope);
if (optimized_out)
{
else if (isreg)
{
SYMBOL_CLASS (sym) = LOC_REGISTER;
+ SYMBOL_VALUE (sym) =
+ DWARF2_REG_TO_REGNUM (SYMBOL_VALUE (sym));
}
else if (offreg)
{
SYMBOL_CLASS (sym) = LOC_BASEREG;
- SYMBOL_BASEREG (sym) = basereg;
+ SYMBOL_BASEREG (sym) = DWARF2_REG_TO_REGNUM (basereg);
}
else if (islocal)
{
}
else
{
+ fixup_symbol_section (sym, objfile);
+ SYMBOL_VALUE_ADDRESS (sym) =
+ addr + ANOFFSET (objfile->section_offsets,
+ SYMBOL_SECTION (sym));
SYMBOL_CLASS (sym) = LOC_STATIC;
- SYMBOL_VALUE_ADDRESS (sym) = addr + baseaddr;
}
}
}
attr = dwarf_attr (die, DW_AT_location);
if (attr)
{
- SYMBOL_VALUE (sym) = decode_locdesc (DW_BLOCK (attr), objfile);
+ SYMBOL_VALUE (sym) =
+ decode_locdesc (DW_BLOCK (attr), objfile, cu_header);
if (isreg)
{
SYMBOL_CLASS (sym) = LOC_REGPARM;
+ SYMBOL_VALUE (sym) =
+ DWARF2_REG_TO_REGNUM (SYMBOL_VALUE (sym));
}
else if (offreg)
{
else
{
SYMBOL_CLASS (sym) = LOC_BASEREG_ARG;
- SYMBOL_BASEREG (sym) = basereg;
+ SYMBOL_BASEREG (sym) = DWARF2_REG_TO_REGNUM (basereg);
}
}
else
attr = dwarf_attr (die, DW_AT_const_value);
if (attr)
{
- dwarf2_const_value (attr, sym, objfile);
+ dwarf2_const_value (attr, sym, objfile, cu_header);
}
add_symbol_to_list (sym, list_in_scope);
break;
attr = dwarf_attr (die, DW_AT_const_value);
if (attr)
{
- dwarf2_const_value (attr, sym, objfile);
+ dwarf2_const_value (attr, sym, objfile, cu_header);
}
add_symbol_to_list (sym, list_in_scope);
break;
/* Copy constant value from an attribute to a symbol. */
static void
-dwarf2_const_value (attr, sym, objfile)
- struct attribute *attr;
- struct symbol *sym;
- struct objfile *objfile;
+dwarf2_const_value (struct attribute *attr, struct symbol *sym,
+ struct objfile *objfile,
+ const struct comp_unit_head *cu_header)
{
struct dwarf_block *blk;
switch (attr->form)
{
case DW_FORM_addr:
- if (TYPE_LENGTH (SYMBOL_TYPE (sym)) != (unsigned int) address_size)
+ if (TYPE_LENGTH (SYMBOL_TYPE (sym)) != cu_header->addr_size)
complain (&dwarf2_const_value_length_mismatch, SYMBOL_NAME (sym),
- address_size, TYPE_LENGTH (SYMBOL_TYPE (sym)));
+ cu_header->addr_size, TYPE_LENGTH (SYMBOL_TYPE (sym)));
SYMBOL_VALUE_BYTES (sym) = (char *)
- obstack_alloc (&objfile->symbol_obstack, address_size);
- store_address (SYMBOL_VALUE_BYTES (sym), address_size, DW_ADDR (attr));
+ obstack_alloc (&objfile->symbol_obstack, cu_header->addr_size);
+ store_address (SYMBOL_VALUE_BYTES (sym), cu_header->addr_size,
+ DW_ADDR (attr));
SYMBOL_CLASS (sym) = LOC_CONST_BYTES;
break;
case DW_FORM_block1:
/* Return the type of the die in question using its DW_AT_type attribute. */
static struct type *
-die_type (die, objfile)
- struct die_info *die;
- struct objfile *objfile;
+die_type (struct die_info *die, struct objfile *objfile,
+ const struct comp_unit_head *cu_header)
{
struct type *type;
struct attribute *type_attr;
return NULL;
}
}
- type = tag_type_to_type (type_die, objfile);
+ type = tag_type_to_type (type_die, objfile, cu_header);
if (!type)
{
dump_die (type_die);
DW_AT_containing_type attribute. */
static struct type *
-die_containing_type (die, objfile)
- struct die_info *die;
- struct objfile *objfile;
+die_containing_type (struct die_info *die, struct objfile *objfile,
+ const struct comp_unit_head *cu_header)
{
struct type *type = NULL;
struct attribute *type_attr;
error ("Dwarf Error: Cannot find referent at offset %d.", ref);
return NULL;
}
- type = tag_type_to_type (type_die, objfile);
+ type = tag_type_to_type (type_die, objfile, cu_header);
}
if (!type)
{
#if 0
static struct type *
-type_at_offset (offset, objfile)
- unsigned int offset;
- struct objfile *objfile;
+type_at_offset (unsigned int offset, struct objfile *objfile)
{
struct die_info *die;
struct type *type;
#endif
static struct type *
-tag_type_to_type (die, objfile)
- struct die_info *die;
- struct objfile *objfile;
+tag_type_to_type (struct die_info *die, struct objfile *objfile,
+ const struct comp_unit_head *cu_header)
{
if (die->type)
{
}
else
{
- struct attribute *attr;
- attr = dwarf_attr (die, DW_AT_name);
- if (attr && DW_STRING (attr))
- {
- char *attrname=DW_STRING (attr);
- unsigned long hashval=hash(attrname, strlen(attrname)) % TYPE_HASH_SIZE;
-
- if (dwarf2_cached_types[hashval] != NULL)
- {
- const char *nameoftype;
- nameoftype = TYPE_NAME(dwarf2_cached_types[hashval]) == NULL ? TYPE_TAG_NAME(dwarf2_cached_types[hashval]) : TYPE_NAME(dwarf2_cached_types[hashval]);
- if (strcmp(attrname, nameoftype) == 0)
- {
- die->type=dwarf2_cached_types[hashval];
- }
- else
- {
- read_type_die (die, objfile);
- dwarf2_cached_types[hashval] = die->type;
- }
- }
- else
- {
- read_type_die (die, objfile);
- dwarf2_cached_types[hashval] = die->type;
- }
- }
- else
- {
- read_type_die (die, objfile);
- }
-
+ read_type_die (die, objfile, cu_header);
if (!die->type)
{
dump_die (die);
}
static void
-read_type_die (die, objfile)
- struct die_info *die;
- struct objfile *objfile;
+read_type_die (struct die_info *die, struct objfile *objfile,
+ const struct comp_unit_head *cu_header)
{
switch (die->tag)
{
case DW_TAG_class_type:
case DW_TAG_structure_type:
case DW_TAG_union_type:
- read_structure_scope (die, objfile);
+ read_structure_scope (die, objfile, cu_header);
break;
case DW_TAG_enumeration_type:
- read_enumeration (die, objfile);
+ read_enumeration (die, objfile, cu_header);
break;
case DW_TAG_subprogram:
case DW_TAG_subroutine_type:
- read_subroutine_type (die, objfile);
+ read_subroutine_type (die, objfile, cu_header);
break;
case DW_TAG_array_type:
- read_array_type (die, objfile);
+ read_array_type (die, objfile, cu_header);
break;
case DW_TAG_pointer_type:
- read_tag_pointer_type (die, objfile);
+ read_tag_pointer_type (die, objfile, cu_header);
break;
case DW_TAG_ptr_to_member_type:
- read_tag_ptr_to_member_type (die, objfile);
+ read_tag_ptr_to_member_type (die, objfile, cu_header);
break;
case DW_TAG_reference_type:
- read_tag_reference_type (die, objfile);
+ read_tag_reference_type (die, objfile, cu_header);
break;
case DW_TAG_const_type:
- read_tag_const_type (die, objfile);
+ read_tag_const_type (die, objfile, cu_header);
break;
case DW_TAG_volatile_type:
- read_tag_volatile_type (die, objfile);
+ read_tag_volatile_type (die, objfile, cu_header);
break;
case DW_TAG_string_type:
read_tag_string_type (die, objfile);
break;
case DW_TAG_typedef:
- read_typedef (die, objfile);
+ read_typedef (die, objfile, cu_header);
break;
case DW_TAG_base_type:
read_base_type (die, objfile);
}
static struct type *
-dwarf_base_type (encoding, size, objfile)
- int encoding;
- int size;
- struct objfile *objfile;
+dwarf_base_type (int encoding, int size, struct objfile *objfile)
{
/* FIXME - this should not produce a new (struct type *)
every time. It should cache base types. */
#if 0
struct die_info *
-copy_die (old_die)
- struct die_info *old_die;
+copy_die (struct die_info *old_die)
{
struct die_info *new_die;
int i, num_attrs;
/* Return sibling of die, NULL if no sibling. */
struct die_info *
-sibling_die (die)
- struct die_info *die;
+sibling_die (struct die_info *die)
{
int nesting_level = 0;
/* Get linkage name of a die, return NULL if not found. */
static char *
-dwarf2_linkage_name (die)
- struct die_info *die;
+dwarf2_linkage_name (struct die_info *die)
{
struct attribute *attr;
/* Convert a DIE tag into its string name. */
static char *
-dwarf_tag_name (tag)
- register unsigned tag;
+dwarf_tag_name (register unsigned tag)
{
switch (tag)
{
/* Convert a DWARF attribute code into its string name. */
static char *
-dwarf_attr_name (attr)
- register unsigned attr;
+dwarf_attr_name (register unsigned attr)
{
switch (attr)
{
/* Convert a DWARF value form code into its string name. */
static char *
-dwarf_form_name (form)
- register unsigned form;
+dwarf_form_name (register unsigned form)
{
switch (form)
{
/* Convert a DWARF stack opcode into its string name. */
static char *
-dwarf_stack_op_name (op)
- register unsigned op;
+dwarf_stack_op_name (register unsigned op)
{
switch (op)
{
}
static char *
-dwarf_bool_name (mybool)
- unsigned mybool;
+dwarf_bool_name (unsigned mybool)
{
if (mybool)
return "TRUE";
/* Convert a DWARF type code into its string name. */
static char *
-dwarf_type_encoding_name (enc)
- register unsigned enc;
+dwarf_type_encoding_name (register unsigned enc)
{
switch (enc)
{
#if 0
static char *
-dwarf_cfi_name (cfi_opc)
- register unsigned cfi_opc;
+dwarf_cfi_name (register unsigned cfi_opc)
{
switch (cfi_opc)
{
#endif
void
-dump_die (die)
- struct die_info *die;
+dump_die (struct die_info *die)
{
unsigned int i;
}
void
-dump_die_list (die)
- struct die_info *die;
+dump_die_list (struct die_info *die)
{
while (die)
{
}
void
-store_in_ref_table (offset, die)
- unsigned int offset;
- struct die_info *die;
+store_in_ref_table (unsigned int offset, struct die_info *die)
{
int h;
struct die_info *old;
static void
-dwarf2_empty_die_ref_table ()
+dwarf2_empty_hash_tables (void)
{
memset (die_ref_table, 0, sizeof (die_ref_table));
}
static unsigned int
-dwarf2_get_ref_die_offset (attr)
- struct attribute *attr;
+dwarf2_get_ref_die_offset (struct attribute *attr)
{
unsigned int result = 0;
case DW_FORM_ref1:
case DW_FORM_ref2:
case DW_FORM_ref4:
+ case DW_FORM_ref8:
case DW_FORM_ref_udata:
result = cu_header_offset + DW_UNSND (attr);
break;
}
struct die_info *
-follow_die_ref (offset)
- unsigned int offset;
+follow_die_ref (unsigned int offset)
{
struct die_info *die;
int h;
}
static struct type *
-dwarf2_fundamental_type (objfile, typeid)
- struct objfile *objfile;
- int typeid;
+dwarf2_fundamental_type (struct objfile *objfile, int typeid)
{
if (typeid < 0 || typeid >= FT_NUM_MEMBERS)
{
Note that stack overflow is not yet handled. */
static CORE_ADDR
-decode_locdesc (blk, objfile)
- struct dwarf_block *blk;
- struct objfile *objfile;
+decode_locdesc (struct dwarf_block *blk, struct objfile *objfile,
+ const struct comp_unit_head *cu_header)
{
int i;
int size = blk->size;
break;
case DW_OP_addr:
- stack[++stacki] = read_address (objfile->obfd, &data[i]);
- i += address_size;
+ stack[++stacki] = read_address (objfile->obfd, &data[i],
+ cu_header, &bytes_read);
+ i += bytes_read;
break;
case DW_OP_const1u:
/* ARGSUSED */
static void
-dwarf2_free_tmp_obstack (ignore)
- PTR ignore;
+dwarf2_free_tmp_obstack (PTR ignore)
{
obstack_free (&dwarf2_tmp_obstack, NULL);
}
static struct dwarf_block *
-dwarf_alloc_block ()
+dwarf_alloc_block (void)
{
struct dwarf_block *blk;
}
static struct abbrev_info *
-dwarf_alloc_abbrev ()
+dwarf_alloc_abbrev (void)
{
struct abbrev_info *abbrev;
}
static struct die_info *
-dwarf_alloc_die ()
+dwarf_alloc_die (void)
{
struct die_info *die;
projects / deliverable / binutils-gdb.git / blobdiff