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authorStan Shebs <shebs@codesourcery.com>1999-04-16 01:34:07 +0000
committerStan Shebs <shebs@codesourcery.com>1999-04-16 01:34:07 +0000
commit071ea11e85eb9d529cc5eb3d35f6247466a21b99 (patch)
tree5deda65b8d7b04d1f4cbc534c3206d328e1267ec /gdb/dwarf2read.c
parent1730ec6b1848f0f32154277f788fb29f88d8475b (diff)
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Initial creation of sourceware repository
Diffstat (limited to 'gdb/dwarf2read.c')
-rw-r--r--gdb/dwarf2read.c5865
1 files changed, 0 insertions, 5865 deletions
diff --git a/gdb/dwarf2read.c b/gdb/dwarf2read.c
deleted file mode 100644
index cf52066..0000000
--- a/gdb/dwarf2read.c
+++ /dev/null
@@ -1,5865 +0,0 @@
-/* DWARF 2 debugging format support for GDB.
- Copyright 1994, 1995, 1996, 1997, 1998 Free Software Foundation, Inc.
-
- Adapted by Gary Funck (gary@intrepid.com), Intrepid Technology,
- Inc. with support from Florida State University (under contract
- with the Ada Joint Program Office), and Silicon Graphics, Inc.
- Initial contribution by Brent Benson, Harris Computer Systems, Inc.,
- based on Fred Fish's (Cygnus Support) implementation of DWARF 1
- support in dwarfread.c
-
-This file is part of GDB.
-
-This program is free software; you can redistribute it and/or modify
-it under the terms of the GNU General Public License as published by
-the Free Software Foundation; either version 2 of the License, or (at
-your option) any later version.
-
-This program is distributed in the hope that it will be useful, but
-WITHOUT ANY WARRANTY; without even the implied warranty of
-MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
-General Public License for more details.
-
-You should have received a copy of the GNU General Public License
-along with this program; if not, write to the Free Software
-Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */
-
-#include "defs.h"
-#include "bfd.h"
-#include "elf-bfd.h"
-#include "symtab.h"
-#include "gdbtypes.h"
-#include "symfile.h"
-#include "objfiles.h"
-#include "elf/dwarf2.h"
-#include "buildsym.h"
-#include "demangle.h"
-#include "expression.h"
-#include "language.h"
-#include "complaints.h"
-
-#include <fcntl.h>
-#include "gdb_string.h"
-#include <sys/types.h>
-
-/* .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. */
-typedef struct comp_unit_header
- {
- unsigned int length; /* length of the .debug_info
- contribution */
- unsigned short version; /* version number -- 2 for DWARF
- version 2 */
- unsigned int abbrev_offset; /* offset into .debug_abbrev section */
- unsigned char addr_size; /* byte size of an address -- 4 */
- }
-_COMP_UNIT_HEADER;
-#define _ACTUAL_COMP_UNIT_HEADER_SIZE 11
-
-/* .debug_pubnames header
- Because of alignment constraints, this structure has padding and cannot
- be mapped directly onto the beginning of the .debug_info section. */
-typedef struct pubnames_header
- {
- unsigned int length; /* length of the .debug_pubnames
- contribution */
- unsigned char version; /* version number -- 2 for DWARF
- version 2 */
- unsigned int info_offset; /* offset into .debug_info section */
- unsigned int info_size; /* byte size of .debug_info section
- portion */
- }
-_PUBNAMES_HEADER;
-#define _ACTUAL_PUBNAMES_HEADER_SIZE 13
-
-/* .debug_pubnames header
- Because of alignment constraints, this structure has padding and cannot
- be mapped directly onto the beginning of the .debug_info section. */
-typedef struct aranges_header
- {
- unsigned int length; /* byte len of the .debug_aranges
- contribution */
- unsigned short version; /* version number -- 2 for DWARF
- version 2 */
- unsigned int info_offset; /* offset into .debug_info section */
- unsigned char addr_size; /* byte size of an address */
- unsigned char seg_size; /* byte size of segment descriptor */
- }
-_ARANGES_HEADER;
-#define _ACTUAL_ARANGES_HEADER_SIZE 12
-
-/* .debug_line statement program prologue
- Because of alignment constraints, this structure has padding and cannot
- be mapped directly onto the beginning of the .debug_info section. */
-typedef struct statement_prologue
- {
- unsigned int total_length; /* byte length of the statement
- information */
- unsigned short version; /* version number -- 2 for DWARF
- version 2 */
- unsigned int prologue_length; /* # bytes between prologue &
- stmt program */
- unsigned char minimum_instruction_length; /* byte size of
- smallest instr */
- unsigned char default_is_stmt; /* initial value of is_stmt
- register */
- char line_base;
- unsigned char line_range;
- unsigned char opcode_base; /* number assigned to first special
- opcode */
- unsigned char *standard_opcode_lengths;
- }
-_STATEMENT_PROLOGUE;
-
-/* offsets and sizes of debugging sections */
-
-static file_ptr dwarf_info_offset;
-static file_ptr dwarf_abbrev_offset;
-static file_ptr dwarf_line_offset;
-static file_ptr dwarf_pubnames_offset;
-static file_ptr dwarf_aranges_offset;
-static file_ptr dwarf_loc_offset;
-static file_ptr dwarf_macinfo_offset;
-static file_ptr dwarf_str_offset;
-
-static unsigned int dwarf_info_size;
-static unsigned int dwarf_abbrev_size;
-static unsigned int dwarf_line_size;
-static unsigned int dwarf_pubnames_size;
-static unsigned int dwarf_aranges_size;
-static unsigned int dwarf_loc_size;
-static unsigned int dwarf_macinfo_size;
-static unsigned int dwarf_str_size;
-
-/* names of the debugging sections */
-
-#define INFO_SECTION ".debug_info"
-#define ABBREV_SECTION ".debug_abbrev"
-#define LINE_SECTION ".debug_line"
-#define PUBNAMES_SECTION ".debug_pubnames"
-#define ARANGES_SECTION ".debug_aranges"
-#define LOC_SECTION ".debug_loc"
-#define MACINFO_SECTION ".debug_macinfo"
-#define STR_SECTION ".debug_str"
-
-/* local data types */
-
-/* The data in a compilation unit header looks like this. */
-struct comp_unit_head
- {
- unsigned int length;
- short version;
- unsigned int abbrev_offset;
- unsigned char addr_size;
- };
-
-/* The data in the .debug_line statement prologue looks like this. */
-struct line_head
- {
- unsigned int total_length;
- unsigned short version;
- unsigned int prologue_length;
- unsigned char minimum_instruction_length;
- unsigned char default_is_stmt;
- int line_base;
- unsigned char line_range;
- unsigned char opcode_base;
- unsigned char *standard_opcode_lengths;
- };
-
-/* When we construct a partial symbol table entry we only
- need this much information. */
-struct partial_die_info
- {
- enum dwarf_tag tag;
- unsigned char has_children;
- unsigned char is_external;
- unsigned char is_declaration;
- unsigned char has_type;
- unsigned int offset;
- unsigned int abbrev;
- char *name;
- CORE_ADDR lowpc;
- CORE_ADDR highpc;
- struct dwarf_block *locdesc;
- unsigned int language;
- char *sibling;
- };
-
-/* This data structure holds the information of an abbrev. */
-struct abbrev_info
- {
- unsigned int number; /* number identifying abbrev */
- enum dwarf_tag tag; /* dwarf tag */
- int has_children; /* boolean */
- unsigned int num_attrs; /* number of attributes */
- struct attr_abbrev *attrs; /* an array of attribute descriptions */
- struct abbrev_info *next; /* next in chain */
- };
-
-struct attr_abbrev
- {
- enum dwarf_attribute name;
- enum dwarf_form form;
- };
-
-/* This data structure holds a complete die structure. */
-struct die_info
- {
- enum dwarf_tag tag; /* Tag indicating type of die */
- unsigned short has_children; /* Does the die have children */
- unsigned int abbrev; /* Abbrev number */
- unsigned int offset; /* Offset in .debug_info section */
- unsigned int num_attrs; /* Number of attributes */
- struct attribute *attrs; /* An array of attributes */
- struct die_info *next_ref; /* Next die in ref hash table */
- struct die_info *next; /* Next die in linked list */
- struct type *type; /* Cached type information */
- };
-
-/* Attributes have a name and a value */
-struct attribute
- {
- enum dwarf_attribute name;
- enum dwarf_form form;
- union
- {
- char *str;
- struct dwarf_block *blk;
- unsigned int unsnd;
- int snd;
- CORE_ADDR addr;
- }
- u;
- };
-
-/* Get at parts of an attribute structure */
-
-#define DW_STRING(attr) ((attr)->u.str)
-#define DW_UNSND(attr) ((attr)->u.unsnd)
-#define DW_BLOCK(attr) ((attr)->u.blk)
-#define DW_SND(attr) ((attr)->u.snd)
-#define DW_ADDR(attr) ((attr)->u.addr)
-
-/* Blocks are a bunch of untyped bytes. */
-struct dwarf_block
- {
- unsigned int size;
- char *data;
- };
-
-/* We only hold one compilation unit's abbrevs in
- memory at any one time. */
-#ifndef ABBREV_HASH_SIZE
-#define ABBREV_HASH_SIZE 121
-#endif
-#ifndef ATTR_ALLOC_CHUNK
-#define ATTR_ALLOC_CHUNK 4
-#endif
-
-static struct abbrev_info *dwarf2_abbrevs[ABBREV_HASH_SIZE];
-
-/* A hash table of die offsets for following references. */
-#ifndef REF_HASH_SIZE
-#define REF_HASH_SIZE 1021
-#endif
-
-static struct die_info *die_ref_table[REF_HASH_SIZE];
-
-/* Obstack for allocating temporary storage used during symbol reading. */
-static struct obstack dwarf2_tmp_obstack;
-
-/* Offset to the first byte of the current compilation unit header,
- for resolving relative reference dies. */
-static unsigned int cu_header_offset;
-
-/* Allocate fields for structs, unions and enums in this size. */
-#ifndef DW_FIELD_ALLOC_CHUNK
-#define DW_FIELD_ALLOC_CHUNK 4
-#endif
-
-/* The language we are debugging. */
-static enum language cu_language;
-static const struct language_defn *cu_language_defn;
-
-/* Actually data from the sections. */
-static char *dwarf_info_buffer;
-static char *dwarf_abbrev_buffer;
-static char *dwarf_line_buffer;
-
-/* A zeroed version of a partial die for initialization purposes. */
-static struct partial_die_info zeroed_partial_die;
-
-/* The generic symbol table building routines have separate lists for
- file scope symbols and all all other scopes (local scopes). So
- we need to select the right one to pass to add_symbol_to_list().
- We do it by keeping a pointer to the correct list in list_in_scope.
-
- FIXME: The original dwarf code just treated the file scope as the first
- local scope, and all other local scopes as nested local scopes, and worked
- fine. Check to see if we really need to distinguish these
- in buildsym.c. */
-static struct pending **list_in_scope = &file_symbols;
-
-/* FIXME: The following variables pass additional information from
- decode_locdesc to the caller. */
-static int optimized_out; /* Kludge to identify optimized out variables */
-static int isreg; /* Kludge to identify register variables */
-static int offreg; /* Kludge to identify basereg references */
-static int basereg; /* Which base register is it relative to? */
-static int islocal; /* Kludge to identify local variables */
-
-/* DW_AT_frame_base values for the current function.
- frame_base_reg is -1 if DW_AT_frame_base is missing, otherwise it
- contains the register number for the frame register.
- frame_base_offset is the offset from the frame register to the
- virtual stack frame. */
-static int frame_base_reg;
-static CORE_ADDR frame_base_offset;
-
-/* This value is added to each symbol value. FIXME: Generalize to
- the section_offsets structure used by dbxread (once this is done,
- pass the appropriate section number to end_symtab). */
-static CORE_ADDR baseaddr; /* Add to each symbol value */
-
-/* We put a pointer to this structure in the read_symtab_private field
- of the psymtab.
- The complete dwarf information for an objfile is kept in the
- psymbol_obstack, so that absolute die references can be handled.
- Most of the information in this structure is related to an entire
- object file and could be passed via the sym_private field of the objfile.
- It is however conceivable that dwarf2 might not be the only type
- of symbols read from an object file. */
-
-struct dwarf2_pinfo
-{
- /* Pointer to start of dwarf info buffer for the objfile. */
-
- char *dwarf_info_buffer;
-
- /* Offset in dwarf_info_buffer for this compilation unit. */
-
- unsigned long dwarf_info_offset;
-
- /* Pointer to start of dwarf abbreviation buffer for the objfile. */
-
- char *dwarf_abbrev_buffer;
-
- /* Size of dwarf abbreviation section for the objfile. */
-
- unsigned int dwarf_abbrev_size;
-
- /* Pointer to start of dwarf line buffer for the objfile. */
-
- char *dwarf_line_buffer;
-};
-
-#define PST_PRIVATE(p) ((struct dwarf2_pinfo *)(p)->read_symtab_private)
-#define DWARF_INFO_BUFFER(p) (PST_PRIVATE(p)->dwarf_info_buffer)
-#define DWARF_INFO_OFFSET(p) (PST_PRIVATE(p)->dwarf_info_offset)
-#define DWARF_ABBREV_BUFFER(p) (PST_PRIVATE(p)->dwarf_abbrev_buffer)
-#define DWARF_ABBREV_SIZE(p) (PST_PRIVATE(p)->dwarf_abbrev_size)
-#define DWARF_LINE_BUFFER(p) (PST_PRIVATE(p)->dwarf_line_buffer)
-
-/* Maintain an array of referenced fundamental types for the current
- compilation unit being read. For DWARF version 1, we have to construct
- the fundamental types on the fly, since no information about the
- fundamental types is supplied. Each such fundamental type is created by
- calling a language dependent routine to create the type, and then a
- pointer to that type is then placed in the array at the index specified
- by it's FT_<TYPENAME> value. The array has a fixed size set by the
- FT_NUM_MEMBERS compile time constant, which is the number of predefined
- fundamental types gdb knows how to construct. */
-static struct type *ftypes[FT_NUM_MEMBERS]; /* Fundamental types */
-
-/* FIXME: We might want to set this from BFD via bfd_arch_bits_per_byte,
- but this would require a corresponding change in unpack_field_as_long
- and friends. */
-static int bits_per_byte = 8;
-
-/* The routines that read and process dies for a C struct or C++ class
- pass lists of data member fields and lists of member function fields
- in an instance of a field_info structure, as defined below. */
-struct field_info
-{
- /* List of data member and baseclasses fields. */
- struct nextfield
- {
- struct nextfield *next;
- int accessibility;
- int virtuality;
- struct field field;
- } *fields;
-
- /* Number of fields. */
- int nfields;
-
- /* Number of baseclasses. */
- int nbaseclasses;
-
- /* Set if the accesibility of one of the fields is not public. */
- int non_public_fields;
-
- /* Member function fields array, entries are allocated in the order they
- are encountered in the object file. */
- struct nextfnfield
- {
- struct nextfnfield *next;
- struct fn_field fnfield;
- } *fnfields;
-
- /* Member function fieldlist array, contains name of possibly overloaded
- member function, number of overloaded member functions and a pointer
- to the head of the member function field chain. */
- struct fnfieldlist
- {
- char *name;
- int length;
- struct nextfnfield *head;
- } *fnfieldlists;
-
- /* Number of entries in the fnfieldlists array. */
- int nfnfields;
-};
-
-/* FIXME: Kludge to mark a varargs function type for C++ member function
- argument processing. */
-#define TYPE_FLAG_VARARGS (1 << 10)
-
-/* Dwarf2 has no clean way to discern C++ static and non-static member
- functions. G++ helps GDB by marking the first parameter for non-static
- member functions (which is the this pointer) as artificial.
- We pass this information between dwarf2_add_member_fn and
- read_subroutine_type via TYPE_FIELD_ARTIFICIAL. */
-#define TYPE_FIELD_ARTIFICIAL TYPE_FIELD_BITPOS
-
-/* Various complaints about symbol reading that don't abort the process */
-
-static struct complaint dwarf2_const_ignored =
-{
- "type qualifier 'const' ignored", 0, 0
-};
-static struct complaint dwarf2_volatile_ignored =
-{
- "type qualifier 'volatile' ignored", 0, 0
-};
-static struct complaint dwarf2_non_const_array_bound_ignored =
-{
- "non-constant array bounds form '%s' ignored", 0, 0
-};
-static struct complaint dwarf2_missing_line_number_section =
-{
- "missing .debug_line section", 0, 0
-};
-static struct complaint dwarf2_mangled_line_number_section =
-{
- "mangled .debug_line section", 0, 0
-};
-static struct complaint dwarf2_unsupported_die_ref_attr =
-{
- "unsupported die ref attribute form: '%s'", 0, 0
-};
-static struct complaint dwarf2_unsupported_stack_op =
-{
- "unsupported stack op: '%s'", 0, 0
-};
-static struct complaint dwarf2_unsupported_tag =
-{
- "unsupported tag: '%s'", 0, 0
-};
-static struct complaint dwarf2_unsupported_at_encoding =
-{
- "unsupported DW_AT_encoding: '%s'", 0, 0
-};
-static struct complaint dwarf2_unsupported_at_frame_base =
-{
- "unsupported DW_AT_frame_base for function '%s'", 0, 0
-};
-static struct complaint dwarf2_unexpected_tag =
-{
- "unexepected tag in read_type_die: '%s'", 0, 0
-};
-static struct complaint dwarf2_missing_at_frame_base =
-{
- "DW_AT_frame_base missing for DW_OP_fbreg", 0, 0
-};
-static struct complaint dwarf2_bad_static_member_name =
-{
- "unrecognized static data member name '%s'", 0, 0
-};
-static struct complaint dwarf2_unsupported_accessibility =
-{
- "unsupported accessibility %d", 0, 0
-};
-static struct complaint dwarf2_bad_member_name_complaint =
-{
- "cannot extract member name from '%s'", 0, 0
-};
-static struct complaint dwarf2_missing_member_fn_type_complaint =
-{
- "member function type missing for '%s'", 0, 0
-};
-static struct complaint dwarf2_vtbl_not_found_complaint =
-{
- "virtual function table pointer not found when defining class '%s'", 0, 0
-};
-static struct complaint dwarf2_absolute_sibling_complaint =
-{
- "ignoring absolute DW_AT_sibling", 0, 0
-};
-static struct complaint dwarf2_const_value_length_mismatch =
-{
- "const value length mismatch for '%s', got %d, expected %d", 0, 0
-};
-static struct complaint dwarf2_unsupported_const_value_attr =
-{
- "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;
-
-/* Some elf32 object file formats while linked for a 32 bit address
- space contain debug information that has assumed 64 bit
- addresses. Eg 64 bit MIPS target produced by GCC/GAS/LD where the
- symbol table contains 32bit address values while its .debug_info
- section contains 64 bit address values.
- ADDRESS_SIGNIFICANT_SIZE specifies the number significant bits in
- the ADDRESS_SIZE bytes read from the file */
-static int address_significant_size;
-
-/* Externals references. */
-extern int info_verbose; /* From main.c; nonzero => verbose */
-
-/* local function prototypes */
-
-static void dwarf2_locate_sections PARAMS ((bfd *, asection *, PTR));
-
-#if 0
-static void dwarf2_build_psymtabs_easy PARAMS ((struct objfile *,
- struct section_offsets *,
- int));
-#endif
-
-static void dwarf2_build_psymtabs_hard PARAMS ((struct objfile *,
- struct section_offsets *,
- int));
-
-static char *scan_partial_symbols PARAMS ((char *, struct objfile *,
- CORE_ADDR *, CORE_ADDR *));
-
-static void add_partial_symbol PARAMS ((struct partial_die_info *,
- struct objfile *));
-
-static void dwarf2_psymtab_to_symtab PARAMS ((struct partial_symtab *));
-
-static void psymtab_to_symtab_1 PARAMS ((struct partial_symtab *));
-
-static char *dwarf2_read_section PARAMS ((struct objfile *, file_ptr,
- unsigned int));
-
-static void dwarf2_read_abbrevs PARAMS ((bfd *, unsigned int));
-
-static void dwarf2_empty_abbrev_table PARAMS ((PTR));
-
-static struct abbrev_info *dwarf2_lookup_abbrev PARAMS ((unsigned int));
-
-static char *read_partial_die PARAMS ((struct partial_die_info *,
- bfd *, char *, int *));
-
-static char *read_full_die PARAMS ((struct die_info **, bfd *, char *));
-
-static char *read_attribute PARAMS ((struct attribute *, struct attr_abbrev *,
- bfd *, char *));
-
-static unsigned int read_1_byte PARAMS ((bfd *, char *));
-
-static int read_1_signed_byte PARAMS ((bfd *, char *));
-
-static unsigned int read_2_bytes PARAMS ((bfd *, char *));
-
-static unsigned int read_4_bytes PARAMS ((bfd *, char *));
-
-static unsigned int read_8_bytes PARAMS ((bfd *, char *));
-
-static CORE_ADDR read_address PARAMS ((bfd *, char *));
-
-static char *read_n_bytes PARAMS ((bfd *, char *, unsigned int));
-
-static char *read_string PARAMS ((bfd *, char *, unsigned int *));
-
-static unsigned int read_unsigned_leb128 PARAMS ((bfd *, char *,
- unsigned int *));
-
-static int read_signed_leb128 PARAMS ((bfd *, char *, unsigned int *));
-
-static void set_cu_language PARAMS ((unsigned int));
-
-static struct attribute *dwarf_attr PARAMS ((struct die_info *,
- unsigned int));
-
-static void dwarf_decode_lines PARAMS ((unsigned int, char *, bfd *));
-
-static void dwarf2_start_subfile PARAMS ((char *, char *));
-
-static struct symbol *new_symbol PARAMS ((struct die_info *, struct type *,
- struct objfile *));
-
-static void dwarf2_const_value PARAMS ((struct attribute *, struct symbol *,
- struct objfile *));
-
-static struct type *die_type PARAMS ((struct die_info *, struct objfile *));
-
-static struct type *die_containing_type PARAMS ((struct die_info *,
- struct objfile *));
-
-#if 0
-static struct type *type_at_offset PARAMS ((unsigned int, struct objfile *));
-#endif
-
-static struct type *tag_type_to_type PARAMS ((struct die_info *,
- struct objfile *));
-
-static void read_type_die PARAMS ((struct die_info *, struct objfile *));
-
-static void read_typedef PARAMS ((struct die_info *, struct objfile *));
-
-static void read_base_type PARAMS ((struct die_info *, struct objfile *));
-
-static void read_file_scope PARAMS ((struct die_info *, struct objfile *));
-
-static void read_func_scope PARAMS ((struct die_info *, struct objfile *));
-
-static void read_lexical_block_scope PARAMS ((struct die_info *,
- struct objfile *));
-
-static int dwarf2_get_pc_bounds PARAMS ((struct die_info *,
- CORE_ADDR *, CORE_ADDR *,
- struct objfile *));
-
-static void dwarf2_add_field PARAMS ((struct field_info *, struct die_info *,
- struct objfile *));
-
-static void dwarf2_attach_fields_to_type PARAMS ((struct field_info *,
- struct type *,
- struct objfile *));
-
-static char *skip_member_fn_name PARAMS ((char *));
-
-static void dwarf2_add_member_fn PARAMS ((struct field_info *,
- struct die_info *, struct type *,
- struct objfile *objfile));
-
-static void dwarf2_attach_fn_fields_to_type PARAMS ((struct field_info *,
- struct type *,
- struct objfile *));
-
-static void read_structure_scope PARAMS ((struct die_info *, struct objfile *));
-
-static void read_common_block PARAMS ((struct die_info *, struct objfile *));
-
-static void read_enumeration PARAMS ((struct die_info *, struct objfile *));
-
-static struct type *dwarf_base_type PARAMS ((int, int, struct objfile *));
-
-static CORE_ADDR decode_locdesc PARAMS ((struct dwarf_block *,
- struct objfile *));
-
-static void read_array_type PARAMS ((struct die_info *, struct objfile *));
-
-static void read_tag_pointer_type PARAMS ((struct die_info *,
- struct objfile *));
-
-static void read_tag_ptr_to_member_type PARAMS ((struct die_info *,
- struct objfile *));
-
-static void read_tag_reference_type PARAMS ((struct die_info *,
- struct objfile *));
-
-static void read_tag_const_type PARAMS ((struct die_info *, struct objfile *));
-
-static void read_tag_volatile_type PARAMS ((struct die_info *,
- struct objfile *));
-
-static void read_tag_string_type PARAMS ((struct die_info *,
- struct objfile *));
-
-static void read_subroutine_type PARAMS ((struct die_info *,
- struct objfile *));
-
-struct die_info *read_comp_unit PARAMS ((char *, bfd *));
-
-static void free_die_list PARAMS ((struct die_info *));
-
-static void process_die PARAMS ((struct die_info *, struct objfile *));
-
-static char *dwarf2_linkage_name PARAMS ((struct die_info *));
-
-static char *dwarf_tag_name PARAMS ((unsigned int));
-
-static char *dwarf_attr_name PARAMS ((unsigned int));
-
-static char *dwarf_form_name PARAMS ((unsigned int));
-
-static char *dwarf_stack_op_name PARAMS ((unsigned int));
-
-static char *dwarf_bool_name PARAMS ((unsigned int));
-
-static char *dwarf_type_encoding_name PARAMS ((unsigned int));
-
-#if 0
-static char *dwarf_cfi_name PARAMS ((unsigned int));
-
-struct die_info *copy_die PARAMS ((struct die_info *));
-#endif
-
-struct die_info *sibling_die PARAMS ((struct die_info *));
-
-void dump_die PARAMS ((struct die_info *));
-
-void dump_die_list PARAMS ((struct die_info *));
-
-void store_in_ref_table PARAMS ((unsigned int, struct die_info *));
-
-static void dwarf2_empty_die_ref_table PARAMS ((void));
-
-static unsigned int dwarf2_get_ref_die_offset PARAMS ((struct attribute *));
-
-struct die_info *follow_die_ref PARAMS ((unsigned int));
-
-static struct type *dwarf2_fundamental_type PARAMS ((struct objfile *, int));
-
-/* memory allocation interface */
-
-static void dwarf2_free_tmp_obstack PARAMS ((PTR));
-
-static struct dwarf_block *dwarf_alloc_block PARAMS ((void));
-
-static struct abbrev_info *dwarf_alloc_abbrev PARAMS ((void));
-
-static struct die_info *dwarf_alloc_die PARAMS ((void));
-
-/* Try to locate the sections we need for DWARF 2 debugging
- information and return true if we have enough to do something. */
-
-int
-dwarf2_has_info (abfd)
- bfd *abfd;
-{
- dwarf_info_offset = dwarf_abbrev_offset = dwarf_line_offset = 0;
- bfd_map_over_sections (abfd, dwarf2_locate_sections, NULL);
- if (dwarf_info_offset && dwarf_abbrev_offset)
- {
- return 1;
- }
- else
- {
- return 0;
- }
-}
-
-/* This function is mapped across the sections and remembers the
- offset and size of each of the debugging sections we are interested
- in. */
-
-static void
-dwarf2_locate_sections (ignore_abfd, sectp, ignore_ptr)
- bfd *ignore_abfd;
- asection *sectp;
- PTR ignore_ptr;
-{
- if (STREQ (sectp->name, INFO_SECTION))
- {
- dwarf_info_offset = sectp->filepos;
- dwarf_info_size = bfd_get_section_size_before_reloc (sectp);
- }
- else if (STREQ (sectp->name, ABBREV_SECTION))
- {
- dwarf_abbrev_offset = sectp->filepos;
- dwarf_abbrev_size = bfd_get_section_size_before_reloc (sectp);
- }
- else if (STREQ (sectp->name, LINE_SECTION))
- {
- dwarf_line_offset = sectp->filepos;
- dwarf_line_size = bfd_get_section_size_before_reloc (sectp);
- }
- else if (STREQ (sectp->name, PUBNAMES_SECTION))
- {
- dwarf_pubnames_offset = sectp->filepos;
- dwarf_pubnames_size = bfd_get_section_size_before_reloc (sectp);
- }
- else if (STREQ (sectp->name, ARANGES_SECTION))
- {
- dwarf_aranges_offset = sectp->filepos;
- dwarf_aranges_size = bfd_get_section_size_before_reloc (sectp);
- }
- else if (STREQ (sectp->name, LOC_SECTION))
- {
- dwarf_loc_offset = sectp->filepos;
- dwarf_loc_size = bfd_get_section_size_before_reloc (sectp);
- }
- else if (STREQ (sectp->name, MACINFO_SECTION))
- {
- dwarf_macinfo_offset = sectp->filepos;
- dwarf_macinfo_size = bfd_get_section_size_before_reloc (sectp);
- }
- else if (STREQ (sectp->name, STR_SECTION))
- {
- dwarf_str_offset = sectp->filepos;
- dwarf_str_size = bfd_get_section_size_before_reloc (sectp);
- }
-}
-
-/* Build a partial symbol table. */
-
-void
-dwarf2_build_psymtabs (objfile, section_offsets, mainline)
- struct objfile *objfile;
- struct section_offsets *section_offsets;
- int mainline;
-{
-
- /* We definitely need the .debug_info and .debug_abbrev sections */
-
- dwarf_info_buffer = dwarf2_read_section (objfile,
- dwarf_info_offset,
- dwarf_info_size);
- dwarf_abbrev_buffer = dwarf2_read_section (objfile,
- dwarf_abbrev_offset,
- dwarf_abbrev_size);
- dwarf_line_buffer = dwarf2_read_section (objfile,
- dwarf_line_offset,
- dwarf_line_size);
-
- if (mainline || objfile->global_psymbols.size == 0 ||
- objfile->static_psymbols.size == 0)
- {
- init_psymbol_list (objfile, 1024);
- }
-
-#if 0
- if (dwarf_aranges_offset && dwarf_pubnames_offset)
- {
- /* Things are significanlty easier if we have .debug_aranges and
- .debug_pubnames sections */
-
- dwarf2_build_psymtabs_easy (objfile, section_offsets, mainline);
- }
- else
-#endif
- /* only test this case for now */
- {
- /* In this case we have to work a bit harder */
- dwarf2_build_psymtabs_hard (objfile, section_offsets, mainline);
- }
-}
-
-#if 0
-/* Build the partial symbol table from the information in the
- .debug_pubnames and .debug_aranges sections. */
-
-static void
-dwarf2_build_psymtabs_easy (objfile, section_offsets, mainline)
- struct objfile *objfile;
- struct section_offsets *section_offsets;
- int mainline;
-{
- bfd *abfd = objfile->obfd;
- char *aranges_buffer, *pubnames_buffer;
- char *aranges_ptr, *pubnames_ptr;
- unsigned int entry_length, version, info_offset, info_size;
-
- pubnames_buffer = dwarf2_read_section (objfile,
- dwarf_pubnames_offset,
- dwarf_pubnames_size);
- pubnames_ptr = pubnames_buffer;
- while ((pubnames_ptr - pubnames_buffer) < dwarf_pubnames_size)
- {
- entry_length = read_4_bytes (abfd, pubnames_ptr);
- pubnames_ptr += 4;
- version = read_1_byte (abfd, pubnames_ptr);
- pubnames_ptr += 1;
- info_offset = read_4_bytes (abfd, pubnames_ptr);
- pubnames_ptr += 4;
- info_size = read_4_bytes (abfd, pubnames_ptr);
- pubnames_ptr += 4;
- }
-
- aranges_buffer = dwarf2_read_section (objfile,
- dwarf_aranges_offset,
- dwarf_aranges_size);
-
-}
-#endif
-
-/* 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, section_offsets, mainline)
- struct objfile *objfile;
- struct section_offsets *section_offsets;
- 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;
- int comp_unit_has_pc_info;
- CORE_ADDR lowpc, highpc;
-
- /* Number of bytes of any addresses that are signficant */
- address_significant_size = get_elf_backend_data (abfd)->s->arch_size / 8;
-
- info_ptr = dwarf_info_buffer;
- abbrev_ptr = dwarf_abbrev_buffer;
-
- obstack_init (&dwarf2_tmp_obstack);
- back_to = make_cleanup (dwarf2_free_tmp_obstack, NULL);
-
- while ((unsigned int) (info_ptr - dwarf_info_buffer)
- + ((info_ptr - dwarf_info_buffer) % 4) < dwarf_info_size)
- {
- 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;
-
- if (cu_header.version != 2)
- {
- error ("Dwarf Error: wrong version in compilation unit header.");
- return;
- }
- if (cu_header.abbrev_offset >= dwarf_abbrev_size)
- {
- error ("Dwarf Error: bad offset (0x%lx) in compilation unit header (offset 0x%lx + 6).",
- (long) cu_header.abbrev_offset,
- (long) (beg_of_comp_unit - dwarf_info_buffer));
- return;
- }
- if (beg_of_comp_unit + cu_header.length + 4
- > dwarf_info_buffer + dwarf_info_size)
- {
- error ("Dwarf Error: bad length (0x%lx) in compilation unit header (offset 0x%lx + 0).",
- (long) cu_header.length,
- (long) (beg_of_comp_unit - dwarf_info_buffer));
- return;
- }
- if (address_size < address_significant_size)
- {
- error ("Dwarf Error: bad address size (%ld) in compilation unit header (offset 0x%lx + 11).",
- (long) cu_header.addr_size,
- (long) (beg_of_comp_unit - dwarf_info_buffer));
- }
-
- /* Read the abbrevs for this compilation unit into a table */
- dwarf2_read_abbrevs (abfd, cu_header.abbrev_offset);
- 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);
-
- /* Set the language we're debugging */
- set_cu_language (comp_unit_die.language);
-
- /* Allocate a new partial symbol table structure */
- pst = start_psymtab_common (objfile, section_offsets,
- comp_unit_die.name ? comp_unit_die.name : "",
- comp_unit_die.lowpc,
- objfile->global_psymbols.next,
- objfile->static_psymbols.next);
-
- pst->read_symtab_private = (char *)
- obstack_alloc (&objfile->psymbol_obstack, sizeof (struct dwarf2_pinfo));
- cu_header_offset = beg_of_comp_unit - dwarf_info_buffer;
- DWARF_INFO_BUFFER(pst) = dwarf_info_buffer;
- DWARF_INFO_OFFSET(pst) = beg_of_comp_unit - dwarf_info_buffer;
- DWARF_ABBREV_BUFFER(pst) = dwarf_abbrev_buffer;
- DWARF_ABBREV_SIZE(pst) = dwarf_abbrev_size;
- DWARF_LINE_BUFFER(pst) = dwarf_line_buffer;
- baseaddr = ANOFFSET (section_offsets, 0);
-
- /* Store the function that reads in the rest of the symbol table */
- pst->read_symtab = dwarf2_psymtab_to_symtab;
-
- /* Check if comp unit has_children.
- If so, read the rest of the partial symbols from this comp unit.
- 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);
-
- /* If the compilation unit didn't have an explicit address range,
- then use the information extracted from its child dies. */
- if (!comp_unit_has_pc_info)
- {
- comp_unit_die.lowpc = lowpc;
- comp_unit_die.highpc = highpc;
- }
- }
- pst->textlow = comp_unit_die.lowpc + baseaddr;
- pst->texthigh = comp_unit_die.highpc + baseaddr;
-
- pst->n_global_syms = objfile->global_psymbols.next -
- (objfile->global_psymbols.list + pst->globals_offset);
- pst->n_static_syms = objfile->static_psymbols.next -
- (objfile->static_psymbols.list + pst->statics_offset);
- sort_pst_symbols (pst);
-
- /* If there is already a psymtab or symtab for a file of this
- name, remove it. (If there is a symtab, more drastic things
- also happen.) This happens in VxWorks. */
- free_named_symtabs (pst->filename);
-
- info_ptr = beg_of_comp_unit + cu_header.length + 4;
- }
- 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;
-{
- bfd *abfd = objfile->obfd;
- struct partial_die_info pdi;
-
- /* This function is called after we've read in the comp_unit_die in
- order to read its children. We start the nesting level at 1 since
- we have pushed 1 level down in order to read the comp unit's children.
- The comp unit itself is at level 0, so we stop reading when we pop
- back to that level. */
-
- int nesting_level = 1;
- int has_pc_info;
-
- *lowpc = ((CORE_ADDR) -1);
- *highpc = ((CORE_ADDR) 0);
-
- while (nesting_level)
- {
- info_ptr = read_partial_die (&pdi, abfd, info_ptr, &has_pc_info);
-
- if (pdi.name)
- {
- switch (pdi.tag)
- {
- case DW_TAG_subprogram:
- if (has_pc_info)
- {
- if (pdi.lowpc < *lowpc)
- {
- *lowpc = pdi.lowpc;
- }
- if (pdi.highpc > *highpc)
- {
- *highpc = pdi.highpc;
- }
- if ((pdi.is_external || nesting_level == 1)
- && !pdi.is_declaration)
- {
- add_partial_symbol (&pdi, objfile);
- }
- }
- break;
- case DW_TAG_variable:
- case DW_TAG_typedef:
- case DW_TAG_class_type:
- case DW_TAG_structure_type:
- case DW_TAG_union_type:
- case DW_TAG_enumeration_type:
- if ((pdi.is_external || nesting_level == 1)
- && !pdi.is_declaration)
- {
- add_partial_symbol (&pdi, objfile);
- }
- break;
- case DW_TAG_enumerator:
- /* File scope enumerators are added to the partial symbol
- table. */
- if (nesting_level == 2)
- add_partial_symbol (&pdi, objfile);
- 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);
- break;
- default:
- break;
- }
- }
-
- /* If the die has a sibling, skip to the sibling.
- Do not skip enumeration types, we want to record their
- enumerators. */
- if (pdi.sibling && pdi.tag != DW_TAG_enumeration_type)
- {
- info_ptr = pdi.sibling;
- }
- else if (pdi.has_children)
- {
- /* Die has children, but the optional DW_AT_sibling attribute
- is missing. */
- nesting_level++;
- }
-
- if (pdi.tag == 0)
- {
- nesting_level--;
- }
- }
-
- /* If we didn't find a lowpc, set it to highpc to avoid complaints
- from `maint check'. */
- if (*lowpc == ((CORE_ADDR) -1))
- *lowpc = *highpc;
- return info_ptr;
-}
-
-static void
-add_partial_symbol (pdi, objfile)
- struct partial_die_info *pdi;
- struct objfile *objfile;
-{
- CORE_ADDR addr = 0;
-
- switch (pdi->tag)
- {
- case DW_TAG_subprogram:
- if (pdi->is_external)
- {
- /*prim_record_minimal_symbol (pdi->name, pdi->lowpc + baseaddr,
- mst_text, objfile);*/
- add_psymbol_to_list (pdi->name, strlen (pdi->name),
- VAR_NAMESPACE, LOC_BLOCK,
- &objfile->global_psymbols,
- 0, pdi->lowpc + baseaddr, cu_language, objfile);
- }
- else
- {
- /*prim_record_minimal_symbol (pdi->name, pdi->lowpc + baseaddr,
- mst_file_text, objfile);*/
- add_psymbol_to_list (pdi->name, strlen (pdi->name),
- VAR_NAMESPACE, LOC_BLOCK,
- &objfile->static_psymbols,
- 0, pdi->lowpc + baseaddr, cu_language, objfile);
- }
- break;
- case DW_TAG_variable:
- if (pdi->is_external)
- {
- /* Global Variable.
- Don't enter into the minimal symbol tables as there is
- a minimal symbol table entry from the ELF symbols already.
- Enter into partial symbol table if it has a location
- descriptor or a type.
- If the location descriptor is missing, new_symbol will create
- a LOC_UNRESOLVED symbol, the address of the variable will then
- be determined from the minimal symbol table whenever the variable
- is referenced.
- The address for the partial symbol table entry is not
- used by GDB, but it comes in handy for debugging partial symbol
- table building. */
-
- if (pdi->locdesc)
- addr = decode_locdesc (pdi->locdesc, objfile);
- if (pdi->locdesc || pdi->has_type)
- add_psymbol_to_list (pdi->name, strlen (pdi->name),
- VAR_NAMESPACE, LOC_STATIC,
- &objfile->global_psymbols,
- 0, addr + baseaddr, cu_language, objfile);
- }
- else
- {
- /* Static Variable. Skip symbols without location descriptors. */
- if (pdi->locdesc == NULL)
- return;
- addr = decode_locdesc (pdi->locdesc, objfile);
- /*prim_record_minimal_symbol (pdi->name, addr + baseaddr,
- mst_file_data, objfile);*/
- add_psymbol_to_list (pdi->name, strlen (pdi->name),
- VAR_NAMESPACE, LOC_STATIC,
- &objfile->static_psymbols,
- 0, addr + baseaddr, cu_language, objfile);
- }
- break;
- case DW_TAG_typedef:
- case DW_TAG_base_type:
- add_psymbol_to_list (pdi->name, strlen (pdi->name),
- VAR_NAMESPACE, LOC_TYPEDEF,
- &objfile->static_psymbols,
- 0, (CORE_ADDR) 0, cu_language, objfile);
- break;
- case DW_TAG_class_type:
- case DW_TAG_structure_type:
- case DW_TAG_union_type:
- case DW_TAG_enumeration_type:
- /* Skip aggregate types without children, these are external
- references. */
- if (pdi->has_children == 0)
- return;
- add_psymbol_to_list (pdi->name, strlen (pdi->name),
- STRUCT_NAMESPACE, LOC_TYPEDEF,
- &objfile->static_psymbols,
- 0, (CORE_ADDR) 0, cu_language, objfile);
-
- if (cu_language == language_cplus)
- {
- /* For C++, these implicitly act as typedefs as well. */
- add_psymbol_to_list (pdi->name, strlen (pdi->name),
- VAR_NAMESPACE, LOC_TYPEDEF,
- &objfile->static_psymbols,
- 0, (CORE_ADDR) 0, cu_language, objfile);
- }
- break;
- case DW_TAG_enumerator:
- add_psymbol_to_list (pdi->name, strlen (pdi->name),
- VAR_NAMESPACE, LOC_CONST,
- &objfile->static_psymbols,
- 0, (CORE_ADDR) 0, cu_language, objfile);
- break;
- default:
- break;
- }
-}
-
-/* Expand this partial symbol table into a full symbol table. */
-
-static void
-dwarf2_psymtab_to_symtab (pst)
- struct partial_symtab *pst;
-{
- /* FIXME: This is barely more than a stub. */
- if (pst != NULL)
- {
- if (pst->readin)
- {
- warning ("bug: psymtab for %s is already read in.", pst->filename);
- }
- else
- {
- if (info_verbose)
- {
- printf_filtered ("Reading in symbols for %s...", pst->filename);
- gdb_flush (gdb_stdout);
- }
-
- psymtab_to_symtab_1 (pst);
-
- /* Finish up the debug error message. */
- if (info_verbose)
- printf_filtered ("done.\n");
- }
- }
-}
-
-static void
-psymtab_to_symtab_1 (pst)
- struct partial_symtab *pst;
-{
- struct objfile *objfile = pst->objfile;
- bfd *abfd = objfile->obfd;
- struct comp_unit_head cu_header;
- struct die_info *dies;
- unsigned long offset;
- CORE_ADDR lowpc, highpc;
- struct die_info *child_die;
- char *info_ptr;
- struct symtab *symtab;
- struct cleanup *back_to;
-
- /* Set local variables from the partial symbol table info. */
- offset = DWARF_INFO_OFFSET(pst);
- dwarf_info_buffer = DWARF_INFO_BUFFER(pst);
- 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);
- cu_header_offset = offset;
- info_ptr = dwarf_info_buffer + offset;
-
- obstack_init (&dwarf2_tmp_obstack);
- back_to = make_cleanup (dwarf2_free_tmp_obstack, NULL);
-
- buildsym_init ();
- make_cleanup ((make_cleanup_func) 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;
-
- /* 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);
-
- make_cleanup ((make_cleanup_func) free_die_list, dies);
-
- /* Do line number decoding in read_file_scope () */
- process_die (dies, objfile);
-
- if (!dwarf2_get_pc_bounds (dies, &lowpc, &highpc, objfile))
- {
- /* Some compilers don't define a DW_AT_high_pc attribute for
- the compilation unit. If the DW_AT_high_pc is missing,
- synthesize it, by scanning the DIE's below the compilation unit. */
- highpc = 0;
- if (dies->has_children)
- {
- child_die = dies->next;
- while (child_die && child_die->tag)
- {
- if (child_die->tag == DW_TAG_subprogram)
- {
- CORE_ADDR low, high;
-
- if (dwarf2_get_pc_bounds (child_die, &low, &high, objfile))
- {
- highpc = max (highpc, high);
- }
- }
- child_die = sibling_die (child_die);
- }
- }
- }
- symtab = end_symtab (highpc + baseaddr, objfile, 0);
-
- /* Set symtab language to language from DW_AT_language.
- If the compilation is from a C file generated by language preprocessors,
- do not set the language if it was already deduced by start_subfile. */
- if (symtab != NULL
- && !(cu_language == language_c && symtab->language != language_c))
- {
- symtab->language = cu_language;
- }
- pst->symtab = symtab;
- pst->readin = 1;
- sort_symtab_syms (pst->symtab);
-
- do_cleanups (back_to);
-}
-
-/* Process a die and its children. */
-
-static void
-process_die (die, objfile)
- struct die_info *die;
- struct objfile *objfile;
-{
- switch (die->tag)
- {
- case DW_TAG_padding:
- break;
- case DW_TAG_compile_unit:
- read_file_scope (die, objfile);
- break;
- case DW_TAG_subprogram:
- read_subroutine_type (die, objfile);
- read_func_scope (die, objfile);
- break;
- case DW_TAG_inlined_subroutine:
- /* FIXME: These are ignored for now.
- They could be used to set breakpoints on all inlined instances
- of a function and make GDB `next' properly over inlined functions. */
- break;
- case DW_TAG_lexical_block:
- read_lexical_block_scope (die, objfile);
- break;
- case DW_TAG_class_type:
- case DW_TAG_structure_type:
- case DW_TAG_union_type:
- read_structure_scope (die, objfile);
- break;
- case DW_TAG_enumeration_type:
- read_enumeration (die, objfile);
- break;
- case DW_TAG_subroutine_type:
- read_subroutine_type (die, objfile);
- break;
- case DW_TAG_array_type:
- read_array_type (die, objfile);
- break;
- case DW_TAG_pointer_type:
- read_tag_pointer_type (die, objfile);
- break;
- case DW_TAG_ptr_to_member_type:
- read_tag_ptr_to_member_type (die, objfile);
- break;
- case DW_TAG_reference_type:
- read_tag_reference_type (die, objfile);
- break;
- case DW_TAG_string_type:
- read_tag_string_type (die, objfile);
- break;
- case DW_TAG_base_type:
- read_base_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);
- }
- break;
- case DW_TAG_common_block:
- read_common_block (die, objfile);
- break;
- case DW_TAG_common_inclusion:
- break;
- default:
- new_symbol (die, NULL, objfile);
- break;
- }
-}
-
-static void
-read_file_scope (die, objfile)
- struct die_info *die;
- struct objfile *objfile;
-{
- unsigned int line_offset = 0;
- CORE_ADDR lowpc = ((CORE_ADDR) -1);
- CORE_ADDR highpc = ((CORE_ADDR) 0);
- struct attribute *attr;
- char *name = "<unknown>";
- char *comp_dir = NULL;
- struct die_info *child_die;
- bfd *abfd = objfile->obfd;
-
- if (!dwarf2_get_pc_bounds (die, &lowpc, &highpc, objfile))
- {
- if (die->has_children)
- {
- child_die = die->next;
- while (child_die && child_die->tag)
- {
- if (child_die->tag == DW_TAG_subprogram)
- {
- CORE_ADDR low, high;
-
- if (dwarf2_get_pc_bounds (child_die, &low, &high, objfile))
- {
- lowpc = min (lowpc, low);
- highpc = max (highpc, high);
- }
- }
- child_die = sibling_die (child_die);
- }
- }
- }
-
- /* If we didn't find a lowpc, set it to highpc to avoid complaints
- from finish_block. */
- if (lowpc == ((CORE_ADDR) -1))
- lowpc = highpc;
- lowpc += baseaddr;
- highpc += baseaddr;
-
- attr = dwarf_attr (die, DW_AT_name);
- if (attr)
- {
- name = DW_STRING (attr);
- }
- attr = dwarf_attr (die, DW_AT_comp_dir);
- if (attr)
- {
- comp_dir = DW_STRING (attr);
- if (comp_dir)
- {
- /* Irix 6.2 native cc prepends <machine>.: to the compilation
- directory, get rid of it. */
- char *cp = strchr (comp_dir, ':');
-
- if (cp && cp != comp_dir && cp[-1] == '.' && cp[1] == '/')
- comp_dir = cp + 1;
- }
- }
-
- if (objfile->ei.entry_point >= lowpc &&
- objfile->ei.entry_point < highpc)
- {
- objfile->ei.entry_file_lowpc = lowpc;
- objfile->ei.entry_file_highpc = highpc;
- }
-
- attr = dwarf_attr (die, DW_AT_language);
- if (attr)
- {
- set_cu_language (DW_UNSND (attr));
- }
-
- /* We assume that we're processing GCC output. */
- processing_gcc_compilation = 2;
-#if 0
- /* FIXME:Do something here. */
- if (dip->at_producer != NULL)
- {
- handle_producer (dip->at_producer);
- }
-#endif
-
- /* The compilation unit may be in a different language or objfile,
- zero out all remembered fundamental types. */
- memset (ftypes, 0, FT_NUM_MEMBERS * sizeof (struct type *));
-
- start_symtab (name, comp_dir, lowpc);
- record_debugformat ("DWARF 2");
-
- /* Decode line number information if present. */
- attr = dwarf_attr (die, DW_AT_stmt_list);
- if (attr)
- {
- line_offset = DW_UNSND (attr);
- dwarf_decode_lines (line_offset, comp_dir, abfd);
- }
-
- /* Process all dies in compilation unit. */
- if (die->has_children)
- {
- child_die = die->next;
- while (child_die && child_die->tag)
- {
- process_die (child_die, objfile);
- child_die = sibling_die (child_die);
- }
- }
-}
-
-static void
-read_func_scope (die, objfile)
- struct die_info *die;
- struct objfile *objfile;
-{
- register struct context_stack *new;
- CORE_ADDR lowpc;
- CORE_ADDR highpc;
- struct die_info *child_die;
- struct attribute *attr;
- char *name;
-
- name = dwarf2_linkage_name (die);
-
- /* Ignore functions with missing or empty names and functions with
- missing or invalid low and high pc attributes. */
- if (name == NULL || !dwarf2_get_pc_bounds (die, &lowpc, &highpc, objfile))
- return;
-
- lowpc += baseaddr;
- highpc += baseaddr;
-
- if (objfile->ei.entry_point >= lowpc &&
- objfile->ei.entry_point < highpc)
- {
- objfile->ei.entry_func_lowpc = lowpc;
- objfile->ei.entry_func_highpc = highpc;
- }
-
- if (STREQ (name, "main")) /* FIXME: hardwired name */
- {
- objfile->ei.main_func_lowpc = lowpc;
- objfile->ei.main_func_highpc = highpc;
- }
-
- /* Decode DW_AT_frame_base location descriptor if present, keep result
- for DW_OP_fbreg operands in decode_locdesc. */
- frame_base_reg = -1;
- frame_base_offset = 0;
- attr = dwarf_attr (die, DW_AT_frame_base);
- if (attr)
- {
- CORE_ADDR addr = decode_locdesc (DW_BLOCK (attr), objfile);
- if (isreg)
- frame_base_reg = addr;
- else if (offreg)
- {
- frame_base_reg = basereg;
- frame_base_offset = addr;
- }
- else
- complain (&dwarf2_unsupported_at_frame_base, name);
- }
-
- new = push_context (0, lowpc);
- new->name = new_symbol (die, die->type, objfile);
- list_in_scope = &local_symbols;
-
- if (die->has_children)
- {
- child_die = die->next;
- while (child_die && child_die->tag)
- {
- process_die (child_die, objfile);
- child_die = sibling_die (child_die);
- }
- }
-
- new = pop_context ();
- /* Make a block for the local symbols within. */
- finish_block (new->name, &local_symbols, new->old_blocks,
- lowpc, highpc, objfile);
- list_in_scope = &file_symbols;
-}
-
-/* Process all the DIES contained within a lexical block scope. Start
- 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;
-{
- register struct context_stack *new;
- CORE_ADDR lowpc, highpc;
- struct die_info *child_die;
-
- /* Ignore blocks with missing or invalid low and high pc attributes. */
- if (!dwarf2_get_pc_bounds (die, &lowpc, &highpc, objfile))
- return;
- lowpc += baseaddr;
- highpc += baseaddr;
-
- push_context (0, lowpc);
- if (die->has_children)
- {
- child_die = die->next;
- while (child_die && child_die->tag)
- {
- process_die (child_die, objfile);
- child_die = sibling_die (child_die);
- }
- }
- new = pop_context ();
-
- if (local_symbols != NULL)
- {
- finish_block (0, &local_symbols, new->old_blocks, new->start_addr,
- highpc, objfile);
- }
- local_symbols = new->locals;
-}
-
-/* Get low and high pc attributes from a 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;
-{
- struct attribute *attr;
- CORE_ADDR low;
- CORE_ADDR high;
-
- attr = dwarf_attr (die, DW_AT_low_pc);
- if (attr)
- low = DW_ADDR (attr);
- else
- return 0;
- attr = dwarf_attr (die, DW_AT_high_pc);
- if (attr)
- high = DW_ADDR (attr);
- else
- return 0;
-
- if (high < low)
- return 0;
-
- /* When using the GNU linker, .gnu.linkonce. sections are used to
- eliminate duplicate copies of functions and vtables and such.
- The linker will arbitrarily choose one and discard the others.
- The AT_*_pc values for such functions refer to local labels in
- these sections. If the section from that file was discarded, the
- labels are not in the output, so the relocs get a value of 0.
- If this is a discarded function, mark the pc bounds as invalid,
- so that GDB will ignore it. */
- if (low == 0 && (bfd_get_file_flags (objfile->obfd) & HAS_RELOC) == 0)
- return 0;
-
- *lowpc = low;
- *highpc = high;
- return 1;
-}
-
-/* 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;
-{
- struct nextfield *new_field;
- struct attribute *attr;
- struct field *fp;
- char *fieldname = "";
-
- /* Allocate a new field list entry and link it in. */
- new_field = (struct nextfield *) xmalloc (sizeof (struct nextfield));
- make_cleanup (free, new_field);
- memset (new_field, 0, sizeof (struct nextfield));
- new_field->next = fip->fields;
- fip->fields = new_field;
- fip->nfields++;
-
- /* Handle accessibility and virtuality of field.
- The default accessibility for members is public, the default
- accessibility for inheritance is private. */
- if (die->tag != DW_TAG_inheritance)
- new_field->accessibility = DW_ACCESS_public;
- else
- new_field->accessibility = DW_ACCESS_private;
- new_field->virtuality = DW_VIRTUALITY_none;
-
- attr = dwarf_attr (die, DW_AT_accessibility);
- if (attr)
- new_field->accessibility = DW_UNSND (attr);
- if (new_field->accessibility != DW_ACCESS_public)
- fip->non_public_fields = 1;
- attr = dwarf_attr (die, DW_AT_virtuality);
- if (attr)
- new_field->virtuality = DW_UNSND (attr);
-
- fp = &new_field->field;
- if (die->tag == DW_TAG_member)
- {
- /* Get type of field. */
- fp->type = die_type (die, objfile);
-
- /* Get bit size of field (zero if none). */
- attr = dwarf_attr (die, DW_AT_bit_size);
- if (attr)
- {
- FIELD_BITSIZE (*fp) = DW_UNSND (attr);
- }
- else
- {
- FIELD_BITSIZE (*fp) = 0;
- }
-
- /* Get bit offset of field. */
- attr = dwarf_attr (die, DW_AT_data_member_location);
- if (attr)
- {
- FIELD_BITPOS (*fp) =
- decode_locdesc (DW_BLOCK (attr), objfile) * bits_per_byte;
- }
- else
- FIELD_BITPOS (*fp) = 0;
- attr = dwarf_attr (die, DW_AT_bit_offset);
- if (attr)
- {
- if (BITS_BIG_ENDIAN)
- {
- /* For big endian bits, the DW_AT_bit_offset gives the
- additional bit offset from the MSB of the containing
- anonymous object to the MSB of the field. We don't
- have to do anything special since we don't need to
- know the size of the anonymous object. */
- FIELD_BITPOS (*fp) += DW_UNSND (attr);
- }
- else
- {
- /* For little endian bits, compute the bit offset to the
- MSB of the anonymous object, subtract off the number of
- bits from the MSB of the field to the MSB of the
- object, and then subtract off the number of bits of
- the field itself. The result is the bit offset of
- the LSB of the field. */
- int anonymous_size;
- int bit_offset = DW_UNSND (attr);
-
- attr = dwarf_attr (die, DW_AT_byte_size);
- if (attr)
- {
- /* The size of the anonymous object containing
- the bit field is explicit, so use the
- indicated size (in bytes). */
- anonymous_size = DW_UNSND (attr);
- }
- else
- {
- /* The size of the anonymous object containing
- the bit field must be inferred from the type
- attribute of the data member containing the
- bit field. */
- anonymous_size = TYPE_LENGTH (fp->type);
- }
- FIELD_BITPOS (*fp) += anonymous_size * bits_per_byte
- - bit_offset - FIELD_BITSIZE (*fp);
- }
- }
-
- /* Get name of field. */
- attr = dwarf_attr (die, DW_AT_name);
- if (attr && DW_STRING (attr))
- fieldname = DW_STRING (attr);
- fp->name = obsavestring (fieldname, strlen (fieldname),
- &objfile->type_obstack);
-
- /* Change accessibility for artificial fields (e.g. virtual table
- pointer or virtual base class pointer) to private. */
- if (dwarf_attr (die, DW_AT_artificial))
- {
- new_field->accessibility = DW_ACCESS_private;
- fip->non_public_fields = 1;
- }
- }
- else if (die->tag == DW_TAG_variable)
- {
- char *physname;
- char *cp;
-
- /* C++ static member.
- Get physical name, extract field name from physical name. */
- physname = dwarf2_linkage_name (die);
- if (physname == NULL)
- return;
-
- cp = physname;
- while (*cp && !is_cplus_marker (*cp))
- cp++;
- if (*cp)
- fieldname = cp + 1;
- if (*fieldname == '\0')
- {
- complain (&dwarf2_bad_static_member_name, physname);
- }
-
- SET_FIELD_PHYSNAME (*fp, obsavestring (physname, strlen (physname),
- &objfile->type_obstack));
- FIELD_TYPE (*fp) = die_type (die, objfile);
- FIELD_NAME (*fp) = obsavestring (fieldname, strlen (fieldname),
- &objfile->type_obstack);
- }
- else if (die->tag == DW_TAG_inheritance)
- {
- /* 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_BITSIZE (*fp) = 0;
- FIELD_TYPE (*fp) = die_type (die, objfile);
- 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;
-{
- int nfields = fip->nfields;
-
- /* Record the field count, allocate space for the array of fields,
- and create blank accessibility bitfields if necessary. */
- TYPE_NFIELDS (type) = nfields;
- TYPE_FIELDS (type) = (struct field *)
- TYPE_ALLOC (type, sizeof (struct field) * nfields);
- memset (TYPE_FIELDS (type), 0, sizeof (struct field) * nfields);
-
- if (fip->non_public_fields)
- {
- ALLOCATE_CPLUS_STRUCT_TYPE (type);
-
- TYPE_FIELD_PRIVATE_BITS (type) =
- (B_TYPE *) TYPE_ALLOC (type, B_BYTES (nfields));
- B_CLRALL (TYPE_FIELD_PRIVATE_BITS (type), nfields);
-
- TYPE_FIELD_PROTECTED_BITS (type) =
- (B_TYPE *) TYPE_ALLOC (type, B_BYTES (nfields));
- B_CLRALL (TYPE_FIELD_PROTECTED_BITS (type), nfields);
-
- TYPE_FIELD_IGNORE_BITS (type) =
- (B_TYPE *) TYPE_ALLOC (type, B_BYTES (nfields));
- B_CLRALL (TYPE_FIELD_IGNORE_BITS (type), nfields);
- }
-
- /* If the type has baseclasses, allocate and clear a bit vector for
- TYPE_FIELD_VIRTUAL_BITS. */
- if (fip->nbaseclasses)
- {
- int num_bytes = B_BYTES (fip->nbaseclasses);
- char *pointer;
-
- ALLOCATE_CPLUS_STRUCT_TYPE (type);
- pointer = (char *) TYPE_ALLOC (type, num_bytes);
- TYPE_FIELD_VIRTUAL_BITS (type) = (B_TYPE *) pointer;
- B_CLRALL (TYPE_FIELD_VIRTUAL_BITS (type), fip->nbaseclasses);
- TYPE_N_BASECLASSES (type) = fip->nbaseclasses;
- }
-
- /* Copy the saved-up fields into the field vector. Start from the head
- of the list, adding to the tail of the field array, so that they end
- up in the same order in the array in which they were added to the list. */
- while (nfields-- > 0)
- {
- TYPE_FIELD (type, nfields) = fip->fields->field;
- switch (fip->fields->accessibility)
- {
- case DW_ACCESS_private:
- SET_TYPE_FIELD_PRIVATE (type, nfields);
- break;
-
- case DW_ACCESS_protected:
- SET_TYPE_FIELD_PROTECTED (type, nfields);
- break;
-
- case DW_ACCESS_public:
- break;
-
- default:
- /* Unknown accessibility. Complain and treat it as public. */
- {
- complain (&dwarf2_unsupported_accessibility,
- fip->fields->accessibility);
- }
- break;
- }
- if (nfields < fip->nbaseclasses)
- {
- switch (fip->fields->virtuality)
- {
- case DW_VIRTUALITY_virtual:
- case DW_VIRTUALITY_pure_virtual:
- SET_TYPE_FIELD_VIRTUAL (type, nfields);
- break;
- }
- }
- fip->fields = fip->fields->next;
- }
-}
-
-/* Skip to the end of a member function name in a mangled name. */
-
-static char *
-skip_member_fn_name (physname)
- char *physname;
-{
- char *endname = physname;
-
- /* Skip over leading underscores. */
- while (*endname == '_')
- endname++;
-
- /* Find two succesive underscores. */
- do
- endname = strchr (endname, '_');
- while (endname != NULL && *++endname != '_');
-
- if (endname == NULL)
- {
- complain (&dwarf2_bad_member_name_complaint, physname);
- endname = physname;
- }
- else
- {
- /* Take care of trailing underscores. */
- if (endname[1] != '_')
- endname--;
- }
- return endname;
-}
-
-/* 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;
-{
- struct attribute *attr;
- struct fnfieldlist *flp;
- int i;
- struct fn_field *fnp;
- char *fieldname;
- char *physname;
- struct nextfnfield *new_fnfield;
-
- /* Extract member function name from mangled name. */
- physname = dwarf2_linkage_name (die);
- if (physname == NULL)
- return;
- if ((physname[0] == '_' && physname[1] == '_'
- && strchr ("0123456789Qt", physname[2]))
- || DESTRUCTOR_PREFIX_P (physname))
- {
- /* Constructor and destructor field names are set to the name
- of the class, but without template parameter lists.
- The name might be missing for anonymous aggregates. */
- if (TYPE_TAG_NAME (type))
- {
- char *p = strchr (TYPE_TAG_NAME (type), '<');
-
- if (p == NULL)
- fieldname = TYPE_TAG_NAME (type);
- else
- fieldname = obsavestring (TYPE_TAG_NAME (type),
- p - TYPE_TAG_NAME (type),
- &objfile->type_obstack);
- }
- else
- {
- char *anon_name = "";
- fieldname = obsavestring (anon_name, strlen (anon_name),
- &objfile->type_obstack);
- }
- }
- else
- {
- char *endname = skip_member_fn_name (physname);
-
- /* Ignore member function if we were unable not extract the member
- function name. */
- if (endname == physname)
- return;
- fieldname = obsavestring (physname, endname - physname,
- &objfile->type_obstack);
- }
-
- /* Look up member function name in fieldlist. */
- for (i = 0; i < fip->nfnfields; i++)
- {
- if (STREQ (fip->fnfieldlists[i].name, fieldname))
- break;
- }
-
- /* Create new list element if necessary. */
- if (i < fip->nfnfields)
- flp = &fip->fnfieldlists[i];
- else
- {
- if ((fip->nfnfields % DW_FIELD_ALLOC_CHUNK) == 0)
- {
- fip->fnfieldlists = (struct fnfieldlist *)
- xrealloc (fip->fnfieldlists,
- (fip->nfnfields + DW_FIELD_ALLOC_CHUNK)
- * sizeof (struct fnfieldlist));
- if (fip->nfnfields == 0)
- make_cleanup ((make_cleanup_func) free_current_contents,
- &fip->fnfieldlists);
- }
- flp = &fip->fnfieldlists[fip->nfnfields];
- flp->name = fieldname;
- flp->length = 0;
- flp->head = NULL;
- fip->nfnfields++;
- }
-
- /* 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);
- memset (new_fnfield, 0, sizeof (struct nextfnfield));
- new_fnfield->next = flp->head;
- flp->head = new_fnfield;
- flp->length++;
-
- /* Fill in the member function field info. */
- fnp = &new_fnfield->fnfield;
- fnp->physname = obsavestring (physname, strlen (physname),
- &objfile->type_obstack);
- fnp->type = alloc_type (objfile);
- if (die->type && TYPE_CODE (die->type) == TYPE_CODE_FUNC)
- {
- struct type *return_type = TYPE_TARGET_TYPE (die->type);
- struct type **arg_types;
- int nparams = TYPE_NFIELDS (die->type);
- int iparams;
-
- /* Copy argument types from the subroutine type. */
- arg_types = (struct type **)
- TYPE_ALLOC (fnp->type, (nparams + 1) * sizeof (struct type *));
- for (iparams = 0; iparams < nparams; iparams++)
- arg_types[iparams] = TYPE_FIELD_TYPE (die->type, iparams);
-
- /* Set last entry in argument type vector. */
- if (TYPE_FLAGS (die->type) & TYPE_FLAG_VARARGS)
- arg_types[nparams] = NULL;
- else
- arg_types[nparams] = dwarf2_fundamental_type (objfile, FT_VOID);
-
- smash_to_method_type (fnp->type, type, return_type, arg_types);
-
- /* Handle static member functions.
- Dwarf2 has no clean way to discern C++ static and non-static
- member functions. G++ helps GDB by marking the first
- parameter for non-static member functions (which is the
- this pointer) as artificial. We obtain this information
- from read_subroutine_type via TYPE_FIELD_ARTIFICIAL. */
- if (nparams == 0 || TYPE_FIELD_ARTIFICIAL (die->type, 0) == 0)
- fnp->voffset = VOFFSET_STATIC;
- }
- else
- complain (&dwarf2_missing_member_fn_type_complaint, physname);
-
- /* 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);
-
- /* 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 accessibility. */
- attr = dwarf_attr (die, DW_AT_accessibility);
- if (attr)
- {
- switch (DW_UNSND (attr))
- {
- case DW_ACCESS_private:
- fnp->is_private = 1;
- break;
- case DW_ACCESS_protected:
- fnp->is_protected = 1;
- break;
- }
- }
-
- /* 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;
-}
-
-/* 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;
-{
- struct fnfieldlist *flp;
- int total_length = 0;
- int i;
-
- ALLOCATE_CPLUS_STRUCT_TYPE (type);
- TYPE_FN_FIELDLISTS (type) = (struct fn_fieldlist *)
- TYPE_ALLOC (type, sizeof (struct fn_fieldlist) * fip->nfnfields);
-
- for (i = 0, flp = fip->fnfieldlists; i < fip->nfnfields; i++, flp++)
- {
- struct nextfnfield *nfp = flp->head;
- struct fn_fieldlist *fn_flp = &TYPE_FN_FIELDLIST (type, i);
- int k;
-
- TYPE_FN_FIELDLIST_NAME (type, i) = flp->name;
- TYPE_FN_FIELDLIST_LENGTH (type, i) = flp->length;
- fn_flp->fn_fields = (struct fn_field *)
- TYPE_ALLOC (type, sizeof (struct fn_field) * flp->length);
- for (k = flp->length; (k--, nfp); nfp = nfp->next)
- fn_flp->fn_fields[k] = nfp->fnfield;
-
- total_length += flp->length;
- }
-
- TYPE_NFN_FIELDS (type) = fip->nfnfields;
- TYPE_NFN_FIELDS_TOTAL (type) = total_length;
-}
-
-/* Called when we find the DIE that starts a structure or union scope
- (definition) to process all dies that define the members of the
- structure or union.
-
- NOTE: we need to call struct_type regardless of whether or not the
- DIE has an at_name attribute, since it might be an anonymous
- structure or union. This gets the type entered into our set of
- user defined types.
-
- However, if the structure is incomplete (an opaque struct/union)
- then suppress creating a symbol table entry for it since gdb only
- wants to find the one with the complete definition. Note that if
- it is complete, we just call new_symbol, which does it's own
- checking about whether the struct/union is anonymous or not (and
- suppresses creating a symbol table entry itself). */
-
-static void
-read_structure_scope (die, objfile)
- struct die_info *die;
- struct objfile *objfile;
-{
- struct type *type;
- struct attribute *attr;
-
- type = alloc_type (objfile);
-
- INIT_CPLUS_SPECIFIC (type);
- attr = dwarf_attr (die, DW_AT_name);
- if (attr && DW_STRING (attr))
- {
- TYPE_TAG_NAME (type) = obsavestring (DW_STRING (attr),
- strlen (DW_STRING (attr)),
- &objfile->type_obstack);
- }
-
- if (die->tag == DW_TAG_structure_type)
- {
- TYPE_CODE (type) = TYPE_CODE_STRUCT;
- }
- else if (die->tag == DW_TAG_union_type)
- {
- TYPE_CODE (type) = TYPE_CODE_UNION;
- }
- else
- {
- /* FIXME: TYPE_CODE_CLASS is currently defined to TYPE_CODE_STRUCT
- in gdbtypes.h. */
- TYPE_CODE (type) = TYPE_CODE_CLASS;
- }
-
- attr = dwarf_attr (die, DW_AT_byte_size);
- if (attr)
- {
- TYPE_LENGTH (type) = DW_UNSND (attr);
- }
- else
- {
- TYPE_LENGTH (type) = 0;
- }
-
- /* We need to add the type field to the die immediately so we don't
- infinitely recurse when dealing with pointers to the structure
- type within the structure itself. */
- die->type = type;
-
- if (die->has_children)
- {
- struct field_info fi;
- struct die_info *child_die;
- struct cleanup *back_to = make_cleanup (null_cleanup, NULL);
-
- memset (&fi, 0, sizeof (struct field_info));
-
- child_die = die->next;
-
- while (child_die && child_die->tag)
- {
- if (child_die->tag == DW_TAG_member)
- {
- dwarf2_add_field (&fi, child_die, objfile);
- }
- else if (child_die->tag == DW_TAG_variable)
- {
- /* C++ static member. */
- dwarf2_add_field (&fi, child_die, objfile);
- }
- 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);
- }
- else if (child_die->tag == DW_TAG_inheritance)
- {
- /* C++ base class field. */
- dwarf2_add_field (&fi, child_die, objfile);
- }
- else
- {
- process_die (child_die, objfile);
- }
- child_die = sibling_die (child_die);
- }
-
- /* Attach fields and member functions to the type. */
- if (fi.nfields)
- dwarf2_attach_fields_to_type (&fi, type, objfile);
- if (fi.nfnfields)
- {
- dwarf2_attach_fn_fields_to_type (&fi, type, objfile);
-
- /* Get the type which refers to the base class (possibly this
- class itself) which contains the vtable pointer for the current
- class from the DW_AT_containing_type attribute. */
-
- if (dwarf_attr (die, DW_AT_containing_type) != NULL)
- {
- struct type *t = die_containing_type (die, objfile);
-
- TYPE_VPTR_BASETYPE (type) = t;
- if (type == t)
- {
- static const char vptr_name[] = { '_','v','p','t','r','\0' };
- int i;
-
- /* Our own class provides vtbl ptr. */
- for (i = TYPE_NFIELDS (t) - 1;
- i >= TYPE_N_BASECLASSES (t);
- --i)
- {
- char *fieldname = TYPE_FIELD_NAME (t, i);
-
- if (STREQN (fieldname, vptr_name, strlen (vptr_name) - 1)
- && is_cplus_marker (fieldname[strlen (vptr_name)]))
- {
- TYPE_VPTR_FIELDNO (type) = i;
- break;
- }
- }
-
- /* Complain if virtual function table field not found. */
- if (i < TYPE_N_BASECLASSES (t))
- complain (&dwarf2_vtbl_not_found_complaint,
- TYPE_TAG_NAME (type) ? TYPE_TAG_NAME (type) : "");
- }
- else
- {
- TYPE_VPTR_FIELDNO (type) = TYPE_VPTR_FIELDNO (t);
- }
- }
- }
-
- new_symbol (die, type, objfile);
-
- do_cleanups (back_to);
- }
- else
- {
- /* No children, must be stub. */
- TYPE_FLAGS (type) |= TYPE_FLAG_STUB;
- }
-
- die->type = type;
-}
-
-/* Given a pointer to a die which begins an enumeration, process all
- the dies that define the members of the enumeration.
-
- This will be much nicer in draft 6 of the DWARF spec when our
- members will be dies instead squished into the DW_AT_element_list
- attribute.
-
- NOTE: We reverse the order of the element list. */
-
-static void
-read_enumeration (die, objfile)
- struct die_info *die;
- struct objfile *objfile;
-{
- struct die_info *child_die;
- struct type *type;
- struct field *fields;
- struct attribute *attr;
- struct symbol *sym;
- int num_fields;
- int unsigned_enum = 1;
-
- type = alloc_type (objfile);
-
- TYPE_CODE (type) = TYPE_CODE_ENUM;
- attr = dwarf_attr (die, DW_AT_name);
- if (attr && DW_STRING (attr))
- {
- TYPE_TAG_NAME (type) = obsavestring (DW_STRING (attr),
- strlen (DW_STRING (attr)),
- &objfile->type_obstack);
- }
-
- attr = dwarf_attr (die, DW_AT_byte_size);
- if (attr)
- {
- TYPE_LENGTH (type) = DW_UNSND (attr);
- }
- else
- {
- TYPE_LENGTH (type) = 0;
- }
-
- num_fields = 0;
- fields = NULL;
- if (die->has_children)
- {
- child_die = die->next;
- while (child_die && child_die->tag)
- {
- if (child_die->tag != DW_TAG_enumerator)
- {
- process_die (child_die, objfile);
- }
- else
- {
- attr = dwarf_attr (child_die, DW_AT_name);
- if (attr)
- {
- sym = new_symbol (child_die, type, objfile);
- if (SYMBOL_VALUE (sym) < 0)
- unsigned_enum = 0;
-
- if ((num_fields % DW_FIELD_ALLOC_CHUNK) == 0)
- {
- fields = (struct field *)
- xrealloc (fields,
- (num_fields + DW_FIELD_ALLOC_CHUNK)
- * sizeof (struct field));
- }
-
- FIELD_NAME (fields[num_fields]) = SYMBOL_NAME (sym);
- FIELD_TYPE (fields[num_fields]) = NULL;
- FIELD_BITPOS (fields[num_fields]) = SYMBOL_VALUE (sym);
- FIELD_BITSIZE (fields[num_fields]) = 0;
-
- num_fields++;
- }
- }
-
- child_die = sibling_die (child_die);
- }
-
- if (num_fields)
- {
- TYPE_NFIELDS (type) = num_fields;
- TYPE_FIELDS (type) = (struct field *)
- TYPE_ALLOC (type, sizeof (struct field) * num_fields);
- memcpy (TYPE_FIELDS (type), fields,
- sizeof (struct field) * num_fields);
- free (fields);
- }
- if (unsigned_enum)
- TYPE_FLAGS (type) |= TYPE_FLAG_UNSIGNED;
- }
- die->type = type;
- new_symbol (die, type, objfile);
-}
-
-/* Extract all information from a DW_TAG_array_type DIE and put it in
- the DIE's type field. For now, this only handles one dimensional
- arrays. */
-
-static void
-read_array_type (die, objfile)
- struct die_info *die;
- struct objfile *objfile;
-{
- struct die_info *child_die;
- struct type *type = NULL;
- struct type *element_type, *range_type, *index_type;
- struct type **range_types = NULL;
- struct attribute *attr;
- int ndim = 0;
- struct cleanup *back_to;
-
- /* Return if we've already decoded this type. */
- if (die->type)
- {
- return;
- }
-
- element_type = die_type (die, objfile);
-
- /* Irix 6.2 native cc creates array types without children for
- arrays with unspecified length. */
- if (die->has_children == 0)
- {
- index_type = dwarf2_fundamental_type (objfile, FT_INTEGER);
- range_type = create_range_type (NULL, index_type, 0, -1);
- die->type = create_array_type (NULL, element_type, range_type);
- return;
- }
-
- back_to = make_cleanup (null_cleanup, NULL);
- child_die = die->next;
- while (child_die && child_die->tag)
- {
- if (child_die->tag == DW_TAG_subrange_type)
- {
- unsigned int low, high;
-
- /* Default bounds to an array with unspecified length. */
- low = 0;
- high = -1;
- if (cu_language == language_fortran)
- {
- /* FORTRAN implies a lower bound of 1, if not given. */
- low = 1;
- }
-
- index_type = die_type (child_die, objfile);
- attr = dwarf_attr (child_die, DW_AT_lower_bound);
- if (attr)
- {
- if (attr->form == DW_FORM_sdata)
- {
- low = DW_SND (attr);
- }
- else if (attr->form == DW_FORM_udata
- || attr->form == DW_FORM_data1
- || attr->form == DW_FORM_data2
- || attr->form == DW_FORM_data4)
- {
- low = DW_UNSND (attr);
- }
- else
- {
- complain (&dwarf2_non_const_array_bound_ignored,
- dwarf_form_name (attr->form));
-#ifdef FORTRAN_HACK
- die->type = lookup_pointer_type (element_type);
- return;
-#else
- low = 0;
-#endif
- }
- }
- attr = dwarf_attr (child_die, DW_AT_upper_bound);
- if (attr)
- {
- if (attr->form == DW_FORM_sdata)
- {
- high = DW_SND (attr);
- }
- else if (attr->form == DW_FORM_udata
- || attr->form == DW_FORM_data1
- || attr->form == DW_FORM_data2
- || attr->form == DW_FORM_data4)
- {
- high = DW_UNSND (attr);
- }
- else if (attr->form == DW_FORM_block1)
- {
- /* GCC encodes arrays with unspecified or dynamic length
- with a DW_FORM_block1 attribute.
- FIXME: GDB does not yet know how to handle dynamic
- arrays properly, treat them as arrays with unspecified
- length for now. */
- high = -1;
- }
- else
- {
- complain (&dwarf2_non_const_array_bound_ignored,
- dwarf_form_name (attr->form));
-#ifdef FORTRAN_HACK
- die->type = lookup_pointer_type (element_type);
- return;
-#else
- high = 1;
-#endif
- }
- }
-
- /* Create a range type and save it for array type creation. */
- if ((ndim % DW_FIELD_ALLOC_CHUNK) == 0)
- {
- range_types = (struct type **)
- xrealloc (range_types, (ndim + DW_FIELD_ALLOC_CHUNK)
- * sizeof (struct type *));
- if (ndim == 0)
- make_cleanup ((make_cleanup_func) free_current_contents,
- &range_types);
- }
- range_types[ndim++] = create_range_type (NULL, index_type, low, high);
- }
- child_die = sibling_die (child_die);
- }
-
- /* Dwarf2 dimensions are output from left to right, create the
- necessary array types in backwards order. */
- type = element_type;
- while (ndim-- > 0)
- type = create_array_type (NULL, type, range_types[ndim]);
-
- do_cleanups (back_to);
-
- /* Install the type in the die. */
- die->type = type;
-}
-
-/* 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;
-{
- struct die_info *child_die;
- struct attribute *attr;
- struct symbol *sym;
- CORE_ADDR base = (CORE_ADDR) 0;
-
- attr = dwarf_attr (die, DW_AT_location);
- if (attr)
- {
- base = decode_locdesc (DW_BLOCK (attr), objfile);
- }
- if (die->has_children)
- {
- child_die = die->next;
- while (child_die && child_die->tag)
- {
- sym = new_symbol (child_die, NULL, objfile);
- attr = dwarf_attr (child_die, DW_AT_data_member_location);
- if (attr)
- {
- SYMBOL_VALUE_ADDRESS (sym) =
- base + decode_locdesc (DW_BLOCK (attr), objfile);
- add_symbol_to_list (sym, &global_symbols);
- }
- child_die = sibling_die (child_die);
- }
- }
-}
-
-/* Extract all information from a DW_TAG_pointer_type DIE and add to
- the user defined type vector. */
-
-static void
-read_tag_pointer_type (die, objfile)
- struct die_info *die;
- struct objfile *objfile;
-{
- struct type *type;
- struct attribute *attr;
-
- if (die->type)
- {
- return;
- }
-
- type = lookup_pointer_type (die_type (die, objfile));
- attr = dwarf_attr (die, DW_AT_byte_size);
- if (attr)
- {
- TYPE_LENGTH (type) = DW_UNSND (attr);
- }
- else
- {
- TYPE_LENGTH (type) = address_size;
- }
- die->type = type;
-}
-
-/* Extract all information from a DW_TAG_ptr_to_member_type DIE and add to
- the user defined type vector. */
-
-static void
-read_tag_ptr_to_member_type (die, objfile)
- struct die_info *die;
- struct objfile *objfile;
-{
- struct type *type;
- struct type *to_type;
- struct type *domain;
-
- if (die->type)
- {
- return;
- }
-
- type = alloc_type (objfile);
- to_type = die_type (die, objfile);
- domain = die_containing_type (die, objfile);
- smash_to_member_type (type, domain, to_type);
-
- die->type = type;
-}
-
-/* Extract all information from a DW_TAG_reference_type DIE and add to
- the user defined type vector. */
-
-static void
-read_tag_reference_type (die, objfile)
- struct die_info *die;
- struct objfile *objfile;
-{
- struct type *type;
- struct attribute *attr;
-
- if (die->type)
- {
- return;
- }
-
- type = lookup_reference_type (die_type (die, objfile));
- attr = dwarf_attr (die, DW_AT_byte_size);
- if (attr)
- {
- TYPE_LENGTH (type) = DW_UNSND (attr);
- }
- else
- {
- TYPE_LENGTH (type) = address_size;
- }
- die->type = type;
-}
-
-static void
-read_tag_const_type (die, objfile)
- struct die_info *die;
- struct objfile *objfile;
-{
- if (die->type)
- {
- return;
- }
-
- complain (&dwarf2_const_ignored);
- die->type = die_type (die, objfile);
-}
-
-static void
-read_tag_volatile_type (die, objfile)
- struct die_info *die;
- struct objfile *objfile;
-{
- if (die->type)
- {
- return;
- }
-
- complain (&dwarf2_volatile_ignored);
- die->type = die_type (die, objfile);
-}
-
-/* Extract all information from a DW_TAG_string_type DIE and add to
- the user defined type vector. It isn't really a user defined type,
- but it behaves like one, with other DIE's using an AT_user_def_type
- attribute to reference it. */
-
-static void
-read_tag_string_type (die, objfile)
- struct die_info *die;
- struct objfile *objfile;
-{
- struct type *type, *range_type, *index_type, *char_type;
- struct attribute *attr;
- unsigned int length;
-
- if (die->type)
- {
- return;
- }
-
- attr = dwarf_attr (die, DW_AT_string_length);
- if (attr)
- {
- length = DW_UNSND (attr);
- }
- else
- {
- length = 1;
- }
- index_type = dwarf2_fundamental_type (objfile, FT_INTEGER);
- range_type = create_range_type (NULL, index_type, 1, length);
- char_type = dwarf2_fundamental_type (objfile, FT_CHAR);
- type = create_string_type (char_type, range_type);
- die->type = type;
-}
-
-/* Handle DIES due to C code like:
-
- struct foo
- {
- int (*funcp)(int a, long l);
- int b;
- };
-
- ('funcp' generates a DW_TAG_subroutine_type DIE)
-*/
-
-static void
-read_subroutine_type (die, objfile)
- struct die_info *die;
- struct objfile *objfile;
-{
- struct type *type; /* Type that this function returns */
- struct type *ftype; /* Function that returns above type */
- struct attribute *attr;
-
- /* Decode the type that this subroutine returns */
- if (die->type)
- {
- return;
- }
- type = die_type (die, objfile);
- ftype = lookup_function_type (type);
-
- /* All functions in C++ have prototypes. */
- attr = dwarf_attr (die, DW_AT_prototyped);
- if ((attr && (DW_UNSND (attr) != 0))
- || cu_language == language_cplus)
- TYPE_FLAGS (ftype) |= TYPE_FLAG_PROTOTYPED;
-
- if (die->has_children)
- {
- struct die_info *child_die;
- int nparams = 0;
- int iparams = 0;
-
- /* Count the number of parameters.
- FIXME: GDB currently ignores vararg functions, but knows about
- vararg member functions. */
- child_die = die->next;
- while (child_die && child_die->tag)
- {
- if (child_die->tag == DW_TAG_formal_parameter)
- nparams++;
- else if (child_die->tag == DW_TAG_unspecified_parameters)
- TYPE_FLAGS (ftype) |= TYPE_FLAG_VARARGS;
- child_die = sibling_die (child_die);
- }
-
- /* Allocate storage for parameters and fill them in. */
- TYPE_NFIELDS (ftype) = nparams;
- TYPE_FIELDS (ftype) = (struct field *)
- TYPE_ALLOC (ftype, nparams * sizeof (struct field));
-
- child_die = die->next;
- while (child_die && child_die->tag)
- {
- if (child_die->tag == DW_TAG_formal_parameter)
- {
- /* Dwarf2 has no clean way to discern C++ static and non-static
- member functions. G++ helps GDB by marking the first
- parameter for non-static member functions (which is the
- this pointer) as artificial. We pass this information
- to dwarf2_add_member_fn via TYPE_FIELD_ARTIFICIAL. */
- attr = dwarf_attr (child_die, DW_AT_artificial);
- if (attr)
- 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);
- iparams++;
- }
- child_die = sibling_die (child_die);
- }
- }
-
- die->type = ftype;
-}
-
-static void
-read_typedef (die, objfile)
- struct die_info *die;
- struct objfile *objfile;
-{
- struct type *type;
-
- if (!die->type)
- {
- struct attribute *attr;
- struct type *xtype;
-
- xtype = die_type (die, objfile);
-
- type = alloc_type (objfile);
- TYPE_CODE (type) = TYPE_CODE_TYPEDEF;
- TYPE_FLAGS (type) |= TYPE_FLAG_TARGET_STUB;
- TYPE_TARGET_TYPE (type) = xtype;
- attr = dwarf_attr (die, DW_AT_name);
- if (attr && DW_STRING (attr))
- TYPE_NAME (type) = obsavestring (DW_STRING (attr),
- strlen (DW_STRING (attr)),
- &objfile->type_obstack);
-
- die->type = type;
- }
-}
-
-/* Find a representation of a given base type and install
- it in the TYPE field of the die. */
-
-static void
-read_base_type (die, objfile)
- struct die_info *die;
- struct objfile *objfile;
-{
- struct type *type;
- struct attribute *attr;
- int encoding = 0, size = 0;
-
- /* If we've already decoded this die, this is a no-op. */
- if (die->type)
- {
- return;
- }
-
- attr = dwarf_attr (die, DW_AT_encoding);
- if (attr)
- {
- encoding = DW_UNSND (attr);
- }
- attr = dwarf_attr (die, DW_AT_byte_size);
- if (attr)
- {
- size = DW_UNSND (attr);
- }
- attr = dwarf_attr (die, DW_AT_name);
- if (attr && DW_STRING (attr))
- {
- enum type_code code = TYPE_CODE_INT;
- int is_unsigned = 0;
-
- switch (encoding)
- {
- case DW_ATE_address:
- /* Turn DW_ATE_address into a void * pointer. */
- code = TYPE_CODE_PTR;
- is_unsigned = 1;
- break;
- case DW_ATE_boolean:
- code = TYPE_CODE_BOOL;
- is_unsigned = 1;
- break;
- case DW_ATE_complex_float:
- code = TYPE_CODE_COMPLEX;
- break;
- case DW_ATE_float:
- code = TYPE_CODE_FLT;
- break;
- case DW_ATE_signed:
- case DW_ATE_signed_char:
- break;
- case DW_ATE_unsigned:
- case DW_ATE_unsigned_char:
- is_unsigned = 1;
- break;
- default:
- complain (&dwarf2_unsupported_at_encoding,
- dwarf_type_encoding_name (encoding));
- break;
- }
- type = init_type (code, size, is_unsigned, DW_STRING (attr), objfile);
- if (encoding == DW_ATE_address)
- TYPE_TARGET_TYPE (type) = dwarf2_fundamental_type (objfile, FT_VOID);
- }
- else
- {
- type = dwarf_base_type (encoding, size, objfile);
- }
- die->type = type;
-}
-
-/* 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;
-{
- 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 ();
-
- cur_ptr = info_ptr;
- nesting_level = 0;
- first_die = last_die = NULL;
- do
- {
- cur_ptr = read_full_die (&die, abfd, cur_ptr);
- if (die->has_children)
- {
- nesting_level++;
- }
- if (die->tag == 0)
- {
- nesting_level--;
- }
-
- die->next = NULL;
-
- /* Enter die in reference hash table */
- store_in_ref_table (die->offset, die);
-
- if (!first_die)
- {
- first_die = last_die = die;
- }
- else
- {
- last_die->next = die;
- last_die = die;
- }
- }
- while (nesting_level > 0);
- return first_die;
-}
-
-/* Free a linked list of dies. */
-
-static void
-free_die_list (dies)
- struct die_info *dies;
-{
- struct die_info *die, *next;
-
- die = dies;
- while (die)
- {
- next = die->next;
- free (die->attrs);
- free (die);
- die = next;
- }
-}
-
-/* Read the contents of the section at OFFSET and of size SIZE from the
- 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;
-{
- bfd *abfd = objfile->obfd;
- char *buf;
-
- if (size == 0)
- return NULL;
-
- buf = (char *) obstack_alloc (&objfile->psymbol_obstack, size);
- if ((bfd_seek (abfd, offset, SEEK_SET) != 0) ||
- (bfd_read (buf, size, 1, abfd) != size))
- {
- buf = NULL;
- error ("Dwarf Error: Can't read DWARF data from '%s'",
- bfd_get_filename (abfd));
- }
- return buf;
-}
-
-/* In DWARF version 2, the description of the debugging information is
- stored in a separate .debug_abbrev section. Before we read any
- dies from a section we read in all abbreviations and install them
- in a hash table. */
-
-static void
-dwarf2_read_abbrevs (abfd, offset)
- bfd * abfd;
- unsigned int offset;
-{
- char *abbrev_ptr;
- struct abbrev_info *cur_abbrev;
- unsigned int abbrev_number, bytes_read, abbrev_name;
- unsigned int abbrev_form, hash_number;
-
- /* empty the table */
- dwarf2_empty_abbrev_table (NULL);
-
- abbrev_ptr = dwarf_abbrev_buffer + offset;
- abbrev_number = read_unsigned_leb128 (abfd, abbrev_ptr, &bytes_read);
- abbrev_ptr += bytes_read;
-
- /* loop until we reach an abbrev number of 0 */
- while (abbrev_number)
- {
- cur_abbrev = dwarf_alloc_abbrev ();
-
- /* read in abbrev header */
- cur_abbrev->number = abbrev_number;
- cur_abbrev->tag = read_unsigned_leb128 (abfd, abbrev_ptr, &bytes_read);
- abbrev_ptr += bytes_read;
- cur_abbrev->has_children = read_1_byte (abfd, abbrev_ptr);
- abbrev_ptr += 1;
-
- /* now read in declarations */
- abbrev_name = read_unsigned_leb128 (abfd, abbrev_ptr, &bytes_read);
- abbrev_ptr += bytes_read;
- abbrev_form = read_unsigned_leb128 (abfd, abbrev_ptr, &bytes_read);
- abbrev_ptr += bytes_read;
- while (abbrev_name)
- {
- if ((cur_abbrev->num_attrs % ATTR_ALLOC_CHUNK) == 0)
- {
- cur_abbrev->attrs = (struct attr_abbrev *)
- xrealloc (cur_abbrev->attrs,
- (cur_abbrev->num_attrs + ATTR_ALLOC_CHUNK)
- * sizeof (struct attr_abbrev));
- }
- cur_abbrev->attrs[cur_abbrev->num_attrs].name = abbrev_name;
- cur_abbrev->attrs[cur_abbrev->num_attrs++].form = abbrev_form;
- abbrev_name = read_unsigned_leb128 (abfd, abbrev_ptr, &bytes_read);
- abbrev_ptr += bytes_read;
- abbrev_form = read_unsigned_leb128 (abfd, abbrev_ptr, &bytes_read);
- abbrev_ptr += bytes_read;
- }
-
- hash_number = abbrev_number % ABBREV_HASH_SIZE;
- cur_abbrev->next = dwarf2_abbrevs[hash_number];
- dwarf2_abbrevs[hash_number] = cur_abbrev;
-
- /* Get next abbreviation.
- Under Irix6 the abbreviations for a compilation unit are not
- always properly terminated with an abbrev number of 0.
- Exit loop if we encounter an abbreviation which we have
- already read (which means we are about to read the abbreviations
- for the next compile unit) or if the end of the abbreviation
- table is reached. */
- if ((unsigned int) (abbrev_ptr - dwarf_abbrev_buffer)
- >= dwarf_abbrev_size)
- break;
- abbrev_number = read_unsigned_leb128 (abfd, abbrev_ptr, &bytes_read);
- abbrev_ptr += bytes_read;
- if (dwarf2_lookup_abbrev (abbrev_number) != NULL)
- break;
- }
-}
-
-/* Empty the abbrev table for a new compilation unit. */
-
-/* ARGSUSED */
-static void
-dwarf2_empty_abbrev_table (ignore)
- PTR ignore;
-{
- int i;
- struct abbrev_info *abbrev, *next;
-
- for (i = 0; i < ABBREV_HASH_SIZE; ++i)
- {
- next = NULL;
- abbrev = dwarf2_abbrevs[i];
- while (abbrev)
- {
- next = abbrev->next;
- free (abbrev->attrs);
- free (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;
-{
- unsigned int hash_number;
- struct abbrev_info *abbrev;
-
- hash_number = number % ABBREV_HASH_SIZE;
- abbrev = dwarf2_abbrevs[hash_number];
-
- while (abbrev)
- {
- if (abbrev->number == number)
- return abbrev;
- else
- abbrev = abbrev->next;
- }
- return NULL;
-}
-
-/* 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;
-{
- unsigned int abbrev_number, bytes_read, i;
- struct abbrev_info *abbrev;
- struct attribute attr;
- struct attribute spec_attr;
- int found_spec_attr = 0;
- int has_low_pc_attr = 0;
- int has_high_pc_attr = 0;
-
- *part_die = zeroed_partial_die;
- *has_pc_info = 0;
- abbrev_number = read_unsigned_leb128 (abfd, info_ptr, &bytes_read);
- info_ptr += bytes_read;
- if (!abbrev_number)
- return info_ptr;
-
- abbrev = dwarf2_lookup_abbrev (abbrev_number);
- if (!abbrev)
- {
- error ("Dwarf Error: Could not find abbrev number %d.", abbrev_number);
- }
- part_die->offset = info_ptr - dwarf_info_buffer;
- part_die->tag = abbrev->tag;
- part_die->has_children = abbrev->has_children;
- part_die->abbrev = abbrev_number;
-
- for (i = 0; i < abbrev->num_attrs; ++i)
- {
- info_ptr = read_attribute (&attr, &abbrev->attrs[i], abfd, info_ptr);
-
- /* Store the data if it is of an attribute we want to keep in a
- partial symbol table. */
- switch (attr.name)
- {
- case DW_AT_name:
-
- /* Prefer DW_AT_MIPS_linkage_name over DW_AT_name. */
- if (part_die->name == NULL)
- part_die->name = DW_STRING (&attr);
- break;
- case DW_AT_MIPS_linkage_name:
- part_die->name = DW_STRING (&attr);
- break;
- case DW_AT_low_pc:
- has_low_pc_attr = 1;
- part_die->lowpc = DW_ADDR (&attr);
- break;
- case DW_AT_high_pc:
- has_high_pc_attr = 1;
- part_die->highpc = DW_ADDR (&attr);
- break;
- case DW_AT_location:
- part_die->locdesc = DW_BLOCK (&attr);
- break;
- case DW_AT_language:
- part_die->language = DW_UNSND (&attr);
- break;
- case DW_AT_external:
- part_die->is_external = DW_UNSND (&attr);
- break;
- case DW_AT_declaration:
- part_die->is_declaration = DW_UNSND (&attr);
- break;
- case DW_AT_type:
- part_die->has_type = 1;
- break;
- case DW_AT_abstract_origin:
- case DW_AT_specification:
- found_spec_attr = 1;
- spec_attr = attr;
- break;
- case DW_AT_sibling:
- /* Ignore absolute siblings, they might point outside of
- the current compile unit. */
- if (attr.form == DW_FORM_ref_addr)
- complain(&dwarf2_absolute_sibling_complaint);
- else
- part_die->sibling =
- dwarf_info_buffer + dwarf2_get_ref_die_offset (&attr);
- break;
- default:
- break;
- }
- }
-
- /* If we found a reference attribute and the die has no name, try
- to find a name in the referred to die. */
-
- if (found_spec_attr && part_die->name == NULL)
- {
- struct partial_die_info spec_die;
- char *spec_ptr;
- int dummy;
-
- spec_ptr = dwarf_info_buffer + dwarf2_get_ref_die_offset (&spec_attr);
- read_partial_die (&spec_die, abfd, spec_ptr, &dummy);
- if (spec_die.name)
- {
- part_die->name = spec_die.name;
-
- /* Copy DW_AT_external attribute if it is set. */
- if (spec_die.is_external)
- part_die->is_external = spec_die.is_external;
- }
- }
-
- /* When using the GNU linker, .gnu.linkonce. sections are used to
- eliminate duplicate copies of functions and vtables and such.
- The linker will arbitrarily choose one and discard the others.
- The AT_*_pc values for such functions refer to local labels in
- these sections. If the section from that file was discarded, the
- labels are not in the output, so the relocs get a value of 0.
- If this is a discarded function, mark the pc bounds as invalid,
- so that GDB will ignore it. */
- if (has_low_pc_attr && has_high_pc_attr
- && part_die->lowpc < part_die->highpc
- && (part_die->lowpc != 0
- || (bfd_get_file_flags (abfd) & HAS_RELOC)))
- *has_pc_info = 1;
- return info_ptr;
-}
-
-/* Read the die from the .debug_info section buffer. And set diep to
- 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;
-{
- unsigned int abbrev_number, bytes_read, i, offset;
- struct abbrev_info *abbrev;
- struct die_info *die;
-
- offset = info_ptr - dwarf_info_buffer;
- abbrev_number = read_unsigned_leb128 (abfd, info_ptr, &bytes_read);
- info_ptr += bytes_read;
- if (!abbrev_number)
- {
- die = dwarf_alloc_die ();
- die->tag = 0;
- die->abbrev = abbrev_number;
- die->type = NULL;
- *diep = die;
- return info_ptr;
- }
-
- abbrev = dwarf2_lookup_abbrev (abbrev_number);
- if (!abbrev)
- {
- error ("Dwarf Error: could not find abbrev number %d.", abbrev_number);
- }
- die = dwarf_alloc_die ();
- die->offset = offset;
- die->tag = abbrev->tag;
- die->has_children = abbrev->has_children;
- die->abbrev = abbrev_number;
- die->type = NULL;
-
- die->num_attrs = abbrev->num_attrs;
- die->attrs = (struct attribute *)
- xmalloc (die->num_attrs * sizeof (struct attribute));
-
- for (i = 0; i < abbrev->num_attrs; ++i)
- {
- info_ptr = read_attribute (&die->attrs[i], &abbrev->attrs[i],
- abfd, info_ptr);
- }
-
- *diep = die;
- return info_ptr;
-}
-
-/* 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;
-{
- unsigned int bytes_read;
- struct dwarf_block *blk;
-
- attr->name = abbrev->name;
- attr->form = abbrev->form;
- switch (abbrev->form)
- {
- case DW_FORM_addr:
- case DW_FORM_ref_addr:
- DW_ADDR (attr) = read_address (abfd, info_ptr);
- info_ptr += address_size;
- break;
- case DW_FORM_block2:
- blk = dwarf_alloc_block ();
- blk->size = read_2_bytes (abfd, info_ptr);
- info_ptr += 2;
- blk->data = read_n_bytes (abfd, info_ptr, blk->size);
- info_ptr += blk->size;
- DW_BLOCK (attr) = blk;
- break;
- case DW_FORM_block4:
- blk = dwarf_alloc_block ();
- blk->size = read_4_bytes (abfd, info_ptr);
- info_ptr += 4;
- blk->data = read_n_bytes (abfd, info_ptr, blk->size);
- info_ptr += blk->size;
- DW_BLOCK (attr) = blk;
- break;
- case DW_FORM_data2:
- DW_UNSND (attr) = read_2_bytes (abfd, info_ptr);
- info_ptr += 2;
- break;
- case DW_FORM_data4:
- DW_UNSND (attr) = read_4_bytes (abfd, info_ptr);
- info_ptr += 4;
- break;
- case DW_FORM_data8:
- DW_UNSND (attr) = read_8_bytes (abfd, info_ptr);
- info_ptr += 8;
- break;
- case DW_FORM_string:
- DW_STRING (attr) = read_string (abfd, info_ptr, &bytes_read);
- info_ptr += bytes_read;
- break;
- case DW_FORM_block:
- blk = dwarf_alloc_block ();
- blk->size = read_unsigned_leb128 (abfd, info_ptr, &bytes_read);
- info_ptr += bytes_read;
- blk->data = read_n_bytes (abfd, info_ptr, blk->size);
- info_ptr += blk->size;
- DW_BLOCK (attr) = blk;
- break;
- case DW_FORM_block1:
- blk = dwarf_alloc_block ();
- blk->size = read_1_byte (abfd, info_ptr);
- info_ptr += 1;
- blk->data = read_n_bytes (abfd, info_ptr, blk->size);
- info_ptr += blk->size;
- DW_BLOCK (attr) = blk;
- break;
- case DW_FORM_data1:
- DW_UNSND (attr) = read_1_byte (abfd, info_ptr);
- info_ptr += 1;
- break;
- case DW_FORM_flag:
- DW_UNSND (attr) = read_1_byte (abfd, info_ptr);
- info_ptr += 1;
- break;
- case DW_FORM_sdata:
- DW_SND (attr) = read_signed_leb128 (abfd, info_ptr, &bytes_read);
- info_ptr += bytes_read;
- break;
- case DW_FORM_udata:
- DW_UNSND (attr) = read_unsigned_leb128 (abfd, info_ptr, &bytes_read);
- info_ptr += bytes_read;
- break;
- case DW_FORM_ref1:
- DW_UNSND (attr) = read_1_byte (abfd, info_ptr);
- info_ptr += 1;
- break;
- case DW_FORM_ref2:
- DW_UNSND (attr) = read_2_bytes (abfd, info_ptr);
- info_ptr += 2;
- break;
- case DW_FORM_ref4:
- DW_UNSND (attr) = read_4_bytes (abfd, info_ptr);
- info_ptr += 4;
- break;
- case DW_FORM_ref_udata:
- DW_UNSND (attr) = read_unsigned_leb128 (abfd, info_ptr, &bytes_read);
- info_ptr += bytes_read;
- break;
- case DW_FORM_strp:
- case DW_FORM_indirect:
- default:
- error ("Dwarf Error: Cannot handle %s in DWARF reader.",
- dwarf_form_name (abbrev->form));
- }
- return info_ptr;
-}
-
-/* read dwarf information from a buffer */
-
-static unsigned int
-read_1_byte (abfd, buf)
- bfd *abfd;
- char *buf;
-{
- return bfd_get_8 (abfd, (bfd_byte *) buf);
-}
-
-static int
-read_1_signed_byte (abfd, buf)
- 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;
-{
- return bfd_get_16 (abfd, (bfd_byte *) buf);
-}
-
-static int
-read_2_signed_bytes (abfd, buf)
- 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;
-{
- return bfd_get_32 (abfd, (bfd_byte *) buf);
-}
-
-static int
-read_4_signed_bytes (abfd, buf)
- bfd *abfd;
- char *buf;
-{
- return bfd_get_signed_32 (abfd, (bfd_byte *) buf);
-}
-
-static unsigned int
-read_8_bytes (abfd, buf)
- bfd *abfd;
- char *buf;
-{
- return bfd_get_64 (abfd, (bfd_byte *) buf);
-}
-
-static CORE_ADDR
-read_address (abfd, buf)
- bfd *abfd;
- char *buf;
-{
- CORE_ADDR retval = 0;
-
- switch (address_size)
- {
- case 4:
- retval = bfd_get_32 (abfd, (bfd_byte *) buf);
- break;
- case 8:
- retval = bfd_get_64 (abfd, (bfd_byte *) buf);
- break;
- default:
- /* *THE* alternative is 8, right? */
- abort ();
- }
- /* If the address being read is larger than the address that is
- applicable for the object file format then mask it down to the
- correct size. Take care to avoid unnecessary shift or shift
- overflow */
- if (address_size > address_significant_size
- && address_significant_size < sizeof (CORE_ADDR))
- {
- CORE_ADDR mask = ((CORE_ADDR) 0) - 1;
- retval &= ~(mask << (address_significant_size * 8));
- }
- return retval;
-}
-
-static char *
-read_n_bytes (abfd, buf, size)
- 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
- allocated on the temporary obstack. */
-#if HOST_CHAR_BIT == 8
- return buf;
-#else
- char *ret;
- unsigned int i;
-
- ret = obstack_alloc (&dwarf2_tmp_obstack, size);
- for (i = 0; i < size; ++i)
- {
- ret[i] = bfd_get_8 (abfd, (bfd_byte *) buf);
- buf++;
- }
- return ret;
-#endif
-}
-
-static char *
-read_string (abfd, buf, bytes_read_ptr)
- 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
- allocated on the temporary obstack. */
-#if HOST_CHAR_BIT == 8
- if (*buf == '\0')
- {
- *bytes_read_ptr = 1;
- return NULL;
- }
- *bytes_read_ptr = strlen (buf) + 1;
- return buf;
-#else
- int byte;
- unsigned int i = 0;
-
- while ((byte = bfd_get_8 (abfd, (bfd_byte *) buf)) != 0)
- {
- obstack_1grow (&dwarf2_tmp_obstack, byte);
- i++;
- buf++;
- }
- if (i == 0)
- {
- *bytes_read_ptr = 1;
- return NULL;
- }
- obstack_1grow (&dwarf2_tmp_obstack, '\0');
- *bytes_read_ptr = i + 1;
- return obstack_finish (&dwarf2_tmp_obstack);
-#endif
-}
-
-static unsigned int
-read_unsigned_leb128 (abfd, buf, bytes_read_ptr)
- bfd *abfd;
- char *buf;
- unsigned int *bytes_read_ptr;
-{
- unsigned int result, num_read;
- int i, shift;
- unsigned char byte;
-
- result = 0;
- shift = 0;
- num_read = 0;
- i = 0;
- while (1)
- {
- byte = bfd_get_8 (abfd, (bfd_byte *) buf);
- buf++;
- num_read++;
- result |= ((byte & 127) << shift);
- if ((byte & 128) == 0)
- {
- break;
- }
- shift += 7;
- }
- *bytes_read_ptr = num_read;
- return result;
-}
-
-static int
-read_signed_leb128 (abfd, buf, bytes_read_ptr)
- bfd *abfd;
- char *buf;
- unsigned int *bytes_read_ptr;
-{
- int result;
- int i, shift, size, num_read;
- unsigned char byte;
-
- result = 0;
- shift = 0;
- size = 32;
- num_read = 0;
- i = 0;
- while (1)
- {
- byte = bfd_get_8 (abfd, (bfd_byte *) buf);
- buf++;
- num_read++;
- result |= ((byte & 127) << shift);
- shift += 7;
- if ((byte & 128) == 0)
- {
- break;
- }
- }
- if ((shift < size) && (byte & 0x40))
- {
- result |= -(1 << shift);
- }
- *bytes_read_ptr = num_read;
- return result;
-}
-
-static void
-set_cu_language (lang)
- unsigned int lang;
-{
- switch (lang)
- {
- case DW_LANG_C89:
- case DW_LANG_C:
- cu_language = language_c;
- break;
- case DW_LANG_C_plus_plus:
- cu_language = language_cplus;
- break;
- case DW_LANG_Fortran77:
- case DW_LANG_Fortran90:
- cu_language = language_fortran;
- break;
- case DW_LANG_Mips_Assembler:
- cu_language = language_asm;
- break;
- case DW_LANG_Ada83:
- case DW_LANG_Cobol74:
- case DW_LANG_Cobol85:
- case DW_LANG_Pascal83:
- case DW_LANG_Modula2:
- default:
- cu_language = language_unknown;
- break;
- }
- cu_language_defn = language_def (cu_language);
-}
-
-/* Return the named attribute or NULL if not there. */
-
-static struct attribute *
-dwarf_attr (die, name)
- struct die_info *die;
- unsigned int name;
-{
- unsigned int i;
- struct attribute *spec = NULL;
-
- for (i = 0; i < die->num_attrs; ++i)
- {
- if (die->attrs[i].name == name)
- {
- return &die->attrs[i];
- }
- if (die->attrs[i].name == DW_AT_specification
- || die->attrs[i].name == DW_AT_abstract_origin)
- spec = &die->attrs[i];
- }
- if (spec)
- {
- struct die_info *ref_die =
- follow_die_ref (dwarf2_get_ref_die_offset (spec));
-
- if (ref_die)
- return dwarf_attr (ref_die, name);
- }
-
- return NULL;
-}
-
-/* Decode the line number information for the compilation unit whose
- line number info is at OFFSET in the .debug_line section.
- The compilation directory of the file is passed in COMP_DIR. */
-
-struct filenames
-{
- unsigned int num_files;
- struct fileinfo
- {
- char *name;
- unsigned int dir;
- unsigned int time;
- unsigned int size;
- }
- *files;
-};
-
-struct directories
-{
- unsigned int num_dirs;
- char **dirs;
-};
-
-static void
-dwarf_decode_lines (offset, comp_dir, abfd)
- unsigned int offset;
- char *comp_dir;
- bfd *abfd;
-{
- char *line_ptr;
- char *line_end;
- struct line_head lh;
- struct cleanup *back_to;
- unsigned int i, bytes_read;
- char *cur_file, *cur_dir;
- unsigned char op_code, extended_op, adj_opcode;
-
-#define FILE_ALLOC_CHUNK 5
-#define DIR_ALLOC_CHUNK 5
-
- struct filenames files;
- struct directories dirs;
-
- if (dwarf_line_buffer == NULL)
- {
- complain (&dwarf2_missing_line_number_section);
- return;
- }
-
- files.num_files = 0;
- files.files = NULL;
-
- dirs.num_dirs = 0;
- dirs.dirs = NULL;
-
- line_ptr = dwarf_line_buffer + offset;
-
- /* read in the prologue */
- lh.total_length = read_4_bytes (abfd, line_ptr);
- line_ptr += 4;
- 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.minimum_instruction_length = read_1_byte (abfd, line_ptr);
- line_ptr += 1;
- lh.default_is_stmt = read_1_byte (abfd, line_ptr);
- line_ptr += 1;
- lh.line_base = read_1_signed_byte (abfd, line_ptr);
- line_ptr += 1;
- lh.line_range = read_1_byte (abfd, line_ptr);
- line_ptr += 1;
- lh.opcode_base = read_1_byte (abfd, line_ptr);
- line_ptr += 1;
- lh.standard_opcode_lengths = (unsigned char *)
- xmalloc (lh.opcode_base * sizeof (unsigned char));
- back_to = make_cleanup ((make_cleanup_func) free_current_contents,
- &lh.standard_opcode_lengths);
-
- lh.standard_opcode_lengths[0] = 1;
- for (i = 1; i < lh.opcode_base; ++i)
- {
- lh.standard_opcode_lengths[i] = read_1_byte (abfd, line_ptr);
- line_ptr += 1;
- }
-
- /* Read directory table */
- while ((cur_dir = read_string (abfd, line_ptr, &bytes_read)) != NULL)
- {
- line_ptr += bytes_read;
- if ((dirs.num_dirs % DIR_ALLOC_CHUNK) == 0)
- {
- dirs.dirs = (char **)
- xrealloc (dirs.dirs,
- (dirs.num_dirs + DIR_ALLOC_CHUNK) * sizeof (char *));
- if (dirs.num_dirs == 0)
- make_cleanup ((make_cleanup_func) free_current_contents, &dirs.dirs);
- }
- dirs.dirs[dirs.num_dirs++] = cur_dir;
- }
- line_ptr += bytes_read;
-
- /* Read file name table */
- while ((cur_file = read_string (abfd, line_ptr, &bytes_read)) != NULL)
- {
- line_ptr += bytes_read;
- if ((files.num_files % FILE_ALLOC_CHUNK) == 0)
- {
- files.files = (struct fileinfo *)
- xrealloc (files.files,
- (files.num_files + FILE_ALLOC_CHUNK)
- * sizeof (struct fileinfo));
- if (files.num_files == 0)
- make_cleanup ((make_cleanup_func) free_current_contents,
- &files.files);
- }
- files.files[files.num_files].name = cur_file;
- files.files[files.num_files].dir =
- read_unsigned_leb128 (abfd, line_ptr, &bytes_read);
- line_ptr += bytes_read;
- files.files[files.num_files].time =
- read_unsigned_leb128 (abfd, line_ptr, &bytes_read);
- line_ptr += bytes_read;
- files.files[files.num_files].size =
- read_unsigned_leb128 (abfd, line_ptr, &bytes_read);
- line_ptr += bytes_read;
- files.num_files++;
- }
- line_ptr += bytes_read;
-
- /* Read the statement sequences until there's nothing left. */
- while (line_ptr < line_end)
- {
- /* state machine registers */
- CORE_ADDR address = 0;
- unsigned int file = 1;
- unsigned int line = 1;
- unsigned int column = 0;
- int is_stmt = lh.default_is_stmt;
- int basic_block = 0;
- int end_sequence = 0;
-
- /* Start a subfile for the current file of the state machine. */
- if (files.num_files >= file)
- {
- /* The file and directory tables are 0 based, the references
- are 1 based. */
- dwarf2_start_subfile (files.files[file - 1].name,
- (files.files[file - 1].dir
- ? dirs.dirs[files.files[file - 1].dir - 1]
- : comp_dir));
- }
-
- /* Decode the table. */
- while (! end_sequence)
- {
- op_code = read_1_byte (abfd, line_ptr);
- line_ptr += 1;
- switch (op_code)
- {
- case DW_LNS_extended_op:
- line_ptr += 1; /* ignore length */
- extended_op = read_1_byte (abfd, line_ptr);
- line_ptr += 1;
- switch (extended_op)
- {
- case DW_LNE_end_sequence:
- end_sequence = 1;
- record_line (current_subfile, line, address);
- break;
- case DW_LNE_set_address:
- address = read_address (abfd, line_ptr) + baseaddr;
- line_ptr += address_size;
- break;
- case DW_LNE_define_file:
- cur_file = read_string (abfd, line_ptr, &bytes_read);
- line_ptr += bytes_read;
- if ((files.num_files % FILE_ALLOC_CHUNK) == 0)
- {
- files.files = (struct fileinfo *)
- xrealloc (files.files,
- (files.num_files + FILE_ALLOC_CHUNK)
- * sizeof (struct fileinfo));
- if (files.num_files == 0)
- make_cleanup ((make_cleanup_func) free_current_contents,
- &files.files);
- }
- files.files[files.num_files].name = cur_file;
- files.files[files.num_files].dir =
- read_unsigned_leb128 (abfd, line_ptr, &bytes_read);
- line_ptr += bytes_read;
- files.files[files.num_files].time =
- read_unsigned_leb128 (abfd, line_ptr, &bytes_read);
- line_ptr += bytes_read;
- files.files[files.num_files].size =
- read_unsigned_leb128 (abfd, line_ptr, &bytes_read);
- line_ptr += bytes_read;
- files.num_files++;
- break;
- default:
- complain (&dwarf2_mangled_line_number_section);
- goto done;
- }
- break;
- case DW_LNS_copy:
- record_line (current_subfile, line, address);
- basic_block = 0;
- break;
- case DW_LNS_advance_pc:
- address += lh.minimum_instruction_length
- * read_unsigned_leb128 (abfd, line_ptr, &bytes_read);
- line_ptr += bytes_read;
- break;
- case DW_LNS_advance_line:
- line += read_signed_leb128 (abfd, line_ptr, &bytes_read);
- line_ptr += bytes_read;
- break;
- case DW_LNS_set_file:
- /* The file and directory tables are 0 based, the references
- are 1 based. */
- file = read_unsigned_leb128 (abfd, line_ptr, &bytes_read);
- line_ptr += bytes_read;
- dwarf2_start_subfile
- (files.files[file - 1].name,
- (files.files[file - 1].dir
- ? dirs.dirs[files.files[file - 1].dir - 1]
- : comp_dir));
- break;
- case DW_LNS_set_column:
- column = read_unsigned_leb128 (abfd, line_ptr, &bytes_read);
- line_ptr += bytes_read;
- break;
- case DW_LNS_negate_stmt:
- is_stmt = (!is_stmt);
- break;
- case DW_LNS_set_basic_block:
- basic_block = 1;
- break;
- case DW_LNS_const_add_pc:
- address += (255 - lh.opcode_base) / lh.line_range;
- break;
- case DW_LNS_fixed_advance_pc:
- address += read_2_bytes (abfd, line_ptr);
- line_ptr += 2;
- break;
- default: /* special operand */
- adj_opcode = op_code - lh.opcode_base;
- address += (adj_opcode / lh.line_range)
- * lh.minimum_instruction_length;
- line += lh.line_base + (adj_opcode % lh.line_range);
- /* append row to matrix using current values */
- record_line (current_subfile, line, address);
- basic_block = 1;
- }
- }
- }
-done:
- do_cleanups (back_to);
-}
-
-/* Start a subfile for DWARF. FILENAME is the name of the file and
- DIRNAME the name of the source directory which contains FILENAME
- or NULL if not known.
- This routine tries to keep line numbers from identical absolute and
- relative file names in a common subfile.
-
- Using the `list' example from the GDB testsuite, which resides in
- /srcdir and compiling it with Irix6.2 cc in /compdir using a filename
- of /srcdir/list0.c yields the following debugging information for list0.c:
-
- DW_AT_name: /srcdir/list0.c
- DW_AT_comp_dir: /compdir
- files.files[0].name: list0.h
- files.files[0].dir: /srcdir
- files.files[1].name: list0.c
- files.files[1].dir: /srcdir
-
- The line number information for list0.c has to end up in a single
- subfile, so that `break /srcdir/list0.c:1' works as expected. */
-
-static void
-dwarf2_start_subfile (filename, dirname)
- char *filename;
- char *dirname;
-{
- /* If the filename isn't absolute, try to match an existing subfile
- with the full pathname. */
-
- if (*filename != '/' && dirname != NULL)
- {
- struct subfile *subfile;
- char *fullname = concat (dirname, "/", filename, NULL);
-
- for (subfile = subfiles; subfile; subfile = subfile->next)
- {
- if (STREQ (subfile->name, fullname))
- {
- current_subfile = subfile;
- free (fullname);
- return;
- }
- }
- free (fullname);
- }
- start_subfile (filename, dirname);
-}
-
-/* Given a pointer to a DWARF information entry, figure out if we need
- to make a symbol table entry for it, and if so, create a new entry
- and return a pointer to it.
- If TYPE is NULL, determine symbol type from the die, otherwise
- used the passed type.
- */
-
-static struct symbol *
-new_symbol (die, type, objfile)
- struct die_info *die;
- struct type *type;
- struct objfile *objfile;
-{
- struct symbol *sym = NULL;
- char *name;
- struct attribute *attr = NULL;
- struct attribute *attr2 = NULL;
- CORE_ADDR addr;
-
- name = dwarf2_linkage_name (die);
- if (name)
- {
- sym = (struct symbol *) obstack_alloc (&objfile->symbol_obstack,
- sizeof (struct symbol));
- OBJSTAT (objfile, n_syms++);
- memset (sym, 0, sizeof (struct symbol));
- SYMBOL_NAME (sym) = obsavestring (name, strlen (name),
- &objfile->symbol_obstack);
-
- /* Default assumptions.
- Use the passed type or decode it from the die. */
- SYMBOL_NAMESPACE (sym) = VAR_NAMESPACE;
- SYMBOL_CLASS (sym) = LOC_STATIC;
- if (type != NULL)
- SYMBOL_TYPE (sym) = type;
- else
- SYMBOL_TYPE (sym) = die_type (die, objfile);
- attr = dwarf_attr (die, DW_AT_decl_line);
- if (attr)
- {
- SYMBOL_LINE (sym) = DW_UNSND (attr);
- }
-
- /* If this symbol is from a C++ compilation, then attempt to
- cache the demangled form for future reference. This is a
- typical time versus space tradeoff, that was decided in favor
- of time because it sped up C++ symbol lookups by a factor of
- about 20. */
-
- SYMBOL_LANGUAGE (sym) = cu_language;
- SYMBOL_INIT_DEMANGLED_NAME (sym, &objfile->symbol_obstack);
- switch (die->tag)
- {
- case DW_TAG_label:
- attr = dwarf_attr (die, DW_AT_low_pc);
- if (attr)
- {
- SYMBOL_VALUE_ADDRESS (sym) = DW_ADDR (attr) + baseaddr;
- }
- SYMBOL_CLASS (sym) = LOC_LABEL;
- break;
- case DW_TAG_subprogram:
- /* SYMBOL_BLOCK_VALUE (sym) will be filled in later by
- finish_block. */
- SYMBOL_CLASS (sym) = LOC_BLOCK;
- attr2 = dwarf_attr (die, DW_AT_external);
- if (attr2 && (DW_UNSND (attr2) != 0))
- {
- add_symbol_to_list (sym, &global_symbols);
- }
- else
- {
- add_symbol_to_list (sym, list_in_scope);
- }
- break;
- case DW_TAG_variable:
- /* Compilation with minimal debug info may result in variables
- with missing type entries. Change the misleading `void' type
- to something sensible. */
- if (TYPE_CODE (SYMBOL_TYPE (sym)) == TYPE_CODE_VOID)
- SYMBOL_TYPE (sym) = init_type (TYPE_CODE_INT,
- TARGET_INT_BIT / HOST_CHAR_BIT, 0,
- "<variable, no debug info>",
- objfile);
- attr = dwarf_attr (die, DW_AT_const_value);
- if (attr)
- {
- dwarf2_const_value (attr, sym, objfile);
- attr2 = dwarf_attr (die, DW_AT_external);
- if (attr2 && (DW_UNSND (attr2) != 0))
- add_symbol_to_list (sym, &global_symbols);
- else
- add_symbol_to_list (sym, list_in_scope);
- break;
- }
- attr = dwarf_attr (die, DW_AT_location);
- if (attr)
- {
- attr2 = dwarf_attr (die, DW_AT_external);
- if (attr2 && (DW_UNSND (attr2) != 0))
- {
- SYMBOL_VALUE_ADDRESS (sym) =
- decode_locdesc (DW_BLOCK (attr), objfile);
- add_symbol_to_list (sym, &global_symbols);
-
- /* In shared libraries the address of the variable
- in the location descriptor might still be relocatable,
- so its value could be zero.
- Enter the symbol as a LOC_UNRESOLVED symbol, if its
- value is zero, the address of the variable will then
- be determined from the minimal symbol table whenever
- the variable is referenced. */
- if (SYMBOL_VALUE_ADDRESS (sym))
- {
- SYMBOL_VALUE_ADDRESS (sym) += baseaddr;
- SYMBOL_CLASS (sym) = LOC_STATIC;
- }
- else
- SYMBOL_CLASS (sym) = LOC_UNRESOLVED;
- }
- else
- {
- SYMBOL_VALUE (sym) = addr =
- decode_locdesc (DW_BLOCK (attr), objfile);
- add_symbol_to_list (sym, list_in_scope);
- if (optimized_out)
- {
- SYMBOL_CLASS (sym) = LOC_OPTIMIZED_OUT;
- }
- else if (isreg)
- {
- SYMBOL_CLASS (sym) = LOC_REGISTER;
- }
- else if (offreg)
- {
- SYMBOL_CLASS (sym) = LOC_BASEREG;
- SYMBOL_BASEREG (sym) = basereg;
- }
- else if (islocal)
- {
- SYMBOL_CLASS (sym) = LOC_LOCAL;
- }
- else
- {
- SYMBOL_CLASS (sym) = LOC_STATIC;
- SYMBOL_VALUE_ADDRESS (sym) = addr + baseaddr;
- }
- }
- }
- else
- {
- /* We do not know the address of this symbol.
- If it is an external symbol and we have type information
- for it, enter the symbol as a LOC_UNRESOLVED symbol.
- The address of the variable will then be determined from
- the minimal symbol table whenever the variable is
- referenced. */
- attr2 = dwarf_attr (die, DW_AT_external);
- if (attr2 && (DW_UNSND (attr2) != 0)
- && dwarf_attr (die, DW_AT_type) != NULL)
- {
- SYMBOL_CLASS (sym) = LOC_UNRESOLVED;
- add_symbol_to_list (sym, &global_symbols);
- }
- }
- break;
- case DW_TAG_formal_parameter:
- attr = dwarf_attr (die, DW_AT_location);
- if (attr)
- {
- SYMBOL_VALUE (sym) = decode_locdesc (DW_BLOCK (attr), objfile);
- if (isreg)
- {
- SYMBOL_CLASS (sym) = LOC_REGPARM;
- }
- else if (offreg)
- {
- SYMBOL_CLASS (sym) = LOC_BASEREG_ARG;
- SYMBOL_BASEREG (sym) = basereg;
- }
- else
- {
- SYMBOL_CLASS (sym) = LOC_ARG;
- }
- }
- attr = dwarf_attr (die, DW_AT_const_value);
- if (attr)
- {
- dwarf2_const_value (attr, sym, objfile);
- }
- add_symbol_to_list (sym, list_in_scope);
- break;
- case DW_TAG_unspecified_parameters:
- /* From varargs functions; gdb doesn't seem to have any
- interest in this information, so just ignore it for now.
- (FIXME?) */
- break;
- case DW_TAG_class_type:
- case DW_TAG_structure_type:
- case DW_TAG_union_type:
- case DW_TAG_enumeration_type:
- SYMBOL_CLASS (sym) = LOC_TYPEDEF;
- SYMBOL_NAMESPACE (sym) = STRUCT_NAMESPACE;
- add_symbol_to_list (sym, list_in_scope);
-
- /* The semantics of C++ state that "struct foo { ... }" also
- defines a typedef for "foo". Synthesize a typedef symbol so
- that "ptype foo" works as expected. */
- if (cu_language == language_cplus)
- {
- struct symbol *typedef_sym = (struct symbol *)
- obstack_alloc (&objfile->symbol_obstack,
- sizeof (struct symbol));
- *typedef_sym = *sym;
- SYMBOL_NAMESPACE (typedef_sym) = VAR_NAMESPACE;
- if (TYPE_NAME (SYMBOL_TYPE (sym)) == 0)
- TYPE_NAME (SYMBOL_TYPE (sym)) =
- obsavestring (SYMBOL_NAME (sym),
- strlen (SYMBOL_NAME (sym)),
- &objfile->type_obstack);
- add_symbol_to_list (typedef_sym, list_in_scope);
- }
- break;
- case DW_TAG_typedef:
- case DW_TAG_base_type:
- SYMBOL_CLASS (sym) = LOC_TYPEDEF;
- SYMBOL_NAMESPACE (sym) = VAR_NAMESPACE;
- add_symbol_to_list (sym, list_in_scope);
- break;
- case DW_TAG_enumerator:
- attr = dwarf_attr (die, DW_AT_const_value);
- if (attr)
- {
- dwarf2_const_value (attr, sym, objfile);
- }
- add_symbol_to_list (sym, list_in_scope);
- break;
- default:
- /* Not a tag we recognize. Hopefully we aren't processing
- trash data, but since we must specifically ignore things
- we don't recognize, there is nothing else we should do at
- this point. */
- complain (&dwarf2_unsupported_tag, dwarf_tag_name (die->tag));
- break;
- }
- }
- return (sym);
-}
-
-/* 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;
-{
- struct dwarf_block *blk;
-
- switch (attr->form)
- {
- case DW_FORM_addr:
- if (TYPE_LENGTH (SYMBOL_TYPE (sym)) != (unsigned int) address_size)
- complain (&dwarf2_const_value_length_mismatch, SYMBOL_NAME (sym),
- address_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));
- SYMBOL_CLASS (sym) = LOC_CONST_BYTES;
- break;
- case DW_FORM_block1:
- case DW_FORM_block2:
- case DW_FORM_block4:
- case DW_FORM_block:
- blk = DW_BLOCK (attr);
- if (TYPE_LENGTH (SYMBOL_TYPE (sym)) != blk->size)
- complain (&dwarf2_const_value_length_mismatch, SYMBOL_NAME (sym),
- blk->size, TYPE_LENGTH (SYMBOL_TYPE (sym)));
- SYMBOL_VALUE_BYTES (sym) = (char *)
- obstack_alloc (&objfile->symbol_obstack, blk->size);
- memcpy (SYMBOL_VALUE_BYTES (sym), blk->data, blk->size);
- SYMBOL_CLASS (sym) = LOC_CONST_BYTES;
- break;
- case DW_FORM_data2:
- case DW_FORM_data4:
- case DW_FORM_data8:
- case DW_FORM_data1:
- case DW_FORM_sdata:
- case DW_FORM_udata:
- SYMBOL_VALUE (sym) = DW_UNSND (attr);
- SYMBOL_CLASS (sym) = LOC_CONST;
- break;
- default:
- complain (&dwarf2_unsupported_const_value_attr,
- dwarf_form_name (attr->form));
- SYMBOL_VALUE (sym) = 0;
- SYMBOL_CLASS (sym) = LOC_CONST;
- break;
- }
-}
-
-/* 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;
-{
- struct type *type;
- struct attribute *type_attr;
- struct die_info *type_die;
- unsigned int ref;
-
- type_attr = dwarf_attr (die, DW_AT_type);
- if (!type_attr)
- {
- /* A missing DW_AT_type represents a void type. */
- return dwarf2_fundamental_type (objfile, FT_VOID);
- }
- else
- {
- ref = dwarf2_get_ref_die_offset (type_attr);
- type_die = follow_die_ref (ref);
- if (!type_die)
- {
- error ("Dwarf Error: Cannot find referent at offset %d.", ref);
- return NULL;
- }
- }
- type = tag_type_to_type (type_die, objfile);
- if (!type)
- {
- dump_die (type_die);
- error ("Dwarf Error: Problem turning type die at offset into gdb type.");
- }
- return type;
-}
-
-/* Return the containing type of the die in question using its
- DW_AT_containing_type attribute. */
-
-static struct type *
-die_containing_type (die, objfile)
- struct die_info *die;
- struct objfile *objfile;
-{
- struct type *type = NULL;
- struct attribute *type_attr;
- struct die_info *type_die = NULL;
- unsigned int ref;
-
- type_attr = dwarf_attr (die, DW_AT_containing_type);
- if (type_attr)
- {
- ref = dwarf2_get_ref_die_offset (type_attr);
- type_die = follow_die_ref (ref);
- if (!type_die)
- {
- error ("Dwarf Error: Cannot find referent at offset %d.", ref);
- return NULL;
- }
- type = tag_type_to_type (type_die, objfile);
- }
- if (!type)
- {
- if (type_die)
- dump_die (type_die);
- error ("Dwarf Error: Problem turning containing type into gdb type.");
- }
- return type;
-}
-
-#if 0
-static struct type *
-type_at_offset (offset, objfile)
- unsigned int offset;
- struct objfile *objfile;
-{
- struct die_info *die;
- struct type *type;
-
- die = follow_die_ref (offset);
- if (!die)
- {
- error ("Dwarf Error: Cannot find type referent at offset %d.", offset);
- return NULL;
- }
- type = tag_type_to_type (die, objfile);
- return type;
-}
-#endif
-
-static struct type *
-tag_type_to_type (die, objfile)
- struct die_info *die;
- struct objfile *objfile;
-{
- if (die->type)
- {
- return die->type;
- }
- else
- {
- read_type_die (die, objfile);
- if (!die->type)
- {
- dump_die (die);
- error ("Dwarf Error: Cannot find type of die.");
- }
- return die->type;
- }
-}
-
-static void
-read_type_die (die, objfile)
- struct die_info *die;
- struct objfile *objfile;
-{
- switch (die->tag)
- {
- case DW_TAG_class_type:
- case DW_TAG_structure_type:
- case DW_TAG_union_type:
- read_structure_scope (die, objfile);
- break;
- case DW_TAG_enumeration_type:
- read_enumeration (die, objfile);
- break;
- case DW_TAG_subprogram:
- case DW_TAG_subroutine_type:
- read_subroutine_type (die, objfile);
- break;
- case DW_TAG_array_type:
- read_array_type (die, objfile);
- break;
- case DW_TAG_pointer_type:
- read_tag_pointer_type (die, objfile);
- break;
- case DW_TAG_ptr_to_member_type:
- read_tag_ptr_to_member_type (die, objfile);
- break;
- case DW_TAG_reference_type:
- read_tag_reference_type (die, objfile);
- break;
- case DW_TAG_const_type:
- read_tag_const_type (die, objfile);
- break;
- case DW_TAG_volatile_type:
- read_tag_volatile_type (die, objfile);
- break;
- case DW_TAG_string_type:
- read_tag_string_type (die, objfile);
- break;
- case DW_TAG_typedef:
- read_typedef (die, objfile);
- break;
- case DW_TAG_base_type:
- read_base_type (die, objfile);
- break;
- default:
- complain (&dwarf2_unexpected_tag, dwarf_tag_name (die->tag));
- break;
- }
-}
-
-static struct type *
-dwarf_base_type (encoding, size, objfile)
- int encoding;
- int size;
- struct objfile *objfile;
-{
- /* FIXME - this should not produce a new (struct type *)
- every time. It should cache base types. */
- struct type *type;
- switch (encoding)
- {
- case DW_ATE_address:
- type = dwarf2_fundamental_type (objfile, FT_VOID);
- return type;
- case DW_ATE_boolean:
- type = dwarf2_fundamental_type (objfile, FT_BOOLEAN);
- return type;
- case DW_ATE_complex_float:
- if (size == 16)
- {
- type = dwarf2_fundamental_type (objfile, FT_DBL_PREC_COMPLEX);
- }
- else
- {
- type = dwarf2_fundamental_type (objfile, FT_COMPLEX);
- }
- return type;
- case DW_ATE_float:
- if (size == 8)
- {
- type = dwarf2_fundamental_type (objfile, FT_DBL_PREC_FLOAT);
- }
- else
- {
- type = dwarf2_fundamental_type (objfile, FT_FLOAT);
- }
- return type;
- case DW_ATE_signed:
- switch (size)
- {
- case 1:
- type = dwarf2_fundamental_type (objfile, FT_SIGNED_CHAR);
- break;
- case 2:
- type = dwarf2_fundamental_type (objfile, FT_SIGNED_SHORT);
- break;
- default:
- case 4:
- type = dwarf2_fundamental_type (objfile, FT_SIGNED_INTEGER);
- break;
- }
- return type;
- case DW_ATE_signed_char:
- type = dwarf2_fundamental_type (objfile, FT_SIGNED_CHAR);
- return type;
- case DW_ATE_unsigned:
- switch (size)
- {
- case 1:
- type = dwarf2_fundamental_type (objfile, FT_UNSIGNED_CHAR);
- break;
- case 2:
- type = dwarf2_fundamental_type (objfile, FT_UNSIGNED_SHORT);
- break;
- default:
- case 4:
- type = dwarf2_fundamental_type (objfile, FT_UNSIGNED_INTEGER);
- break;
- }
- return type;
- case DW_ATE_unsigned_char:
- type = dwarf2_fundamental_type (objfile, FT_UNSIGNED_CHAR);
- return type;
- default:
- type = dwarf2_fundamental_type (objfile, FT_SIGNED_INTEGER);
- return type;
- }
-}
-
-#if 0
-struct die_info *
-copy_die (old_die)
- struct die_info *old_die;
-{
- struct die_info *new_die;
- int i, num_attrs;
-
- new_die = (struct die_info *) xmalloc (sizeof (struct die_info));
- memset (new_die, 0, sizeof (struct die_info));
-
- new_die->tag = old_die->tag;
- new_die->has_children = old_die->has_children;
- new_die->abbrev = old_die->abbrev;
- new_die->offset = old_die->offset;
- new_die->type = NULL;
-
- num_attrs = old_die->num_attrs;
- new_die->num_attrs = num_attrs;
- new_die->attrs = (struct attribute *)
- xmalloc (num_attrs * sizeof (struct attribute));
-
- for (i = 0; i < old_die->num_attrs; ++i)
- {
- new_die->attrs[i].name = old_die->attrs[i].name;
- new_die->attrs[i].form = old_die->attrs[i].form;
- new_die->attrs[i].u.addr = old_die->attrs[i].u.addr;
- }
-
- new_die->next = NULL;
- return new_die;
-}
-#endif
-
-/* Return sibling of die, NULL if no sibling. */
-
-struct die_info *
-sibling_die (die)
- struct die_info *die;
-{
- int nesting_level = 0;
-
- if (!die->has_children)
- {
- if (die->next && (die->next->tag == 0))
- {
- return NULL;
- }
- else
- {
- return die->next;
- }
- }
- else
- {
- do
- {
- if (die->has_children)
- {
- nesting_level++;
- }
- if (die->tag == 0)
- {
- nesting_level--;
- }
- die = die->next;
- }
- while (nesting_level);
- if (die && (die->tag == 0))
- {
- return NULL;
- }
- else
- {
- return die;
- }
- }
-}
-
-/* Get linkage name of a die, return NULL if not found. */
-
-static char *
-dwarf2_linkage_name (die)
- struct die_info *die;
-{
- struct attribute *attr;
-
- attr = dwarf_attr (die, DW_AT_MIPS_linkage_name);
- if (attr && DW_STRING (attr))
- return DW_STRING (attr);
- attr = dwarf_attr (die, DW_AT_name);
- if (attr && DW_STRING (attr))
- return DW_STRING (attr);
- return NULL;
-}
-
-/* Convert a DIE tag into its string name. */
-
-static char *
-dwarf_tag_name (tag)
- register unsigned tag;
-{
- switch (tag)
- {
- case DW_TAG_padding:
- return "DW_TAG_padding";
- case DW_TAG_array_type:
- return "DW_TAG_array_type";
- case DW_TAG_class_type:
- return "DW_TAG_class_type";
- case DW_TAG_entry_point:
- return "DW_TAG_entry_point";
- case DW_TAG_enumeration_type:
- return "DW_TAG_enumeration_type";
- case DW_TAG_formal_parameter:
- return "DW_TAG_formal_parameter";
- case DW_TAG_imported_declaration:
- return "DW_TAG_imported_declaration";
- case DW_TAG_label:
- return "DW_TAG_label";
- case DW_TAG_lexical_block:
- return "DW_TAG_lexical_block";
- case DW_TAG_member:
- return "DW_TAG_member";
- case DW_TAG_pointer_type:
- return "DW_TAG_pointer_type";
- case DW_TAG_reference_type:
- return "DW_TAG_reference_type";
- case DW_TAG_compile_unit:
- return "DW_TAG_compile_unit";
- case DW_TAG_string_type:
- return "DW_TAG_string_type";
- case DW_TAG_structure_type:
- return "DW_TAG_structure_type";
- case DW_TAG_subroutine_type:
- return "DW_TAG_subroutine_type";
- case DW_TAG_typedef:
- return "DW_TAG_typedef";
- case DW_TAG_union_type:
- return "DW_TAG_union_type";
- case DW_TAG_unspecified_parameters:
- return "DW_TAG_unspecified_parameters";
- case DW_TAG_variant:
- return "DW_TAG_variant";
- case DW_TAG_common_block:
- return "DW_TAG_common_block";
- case DW_TAG_common_inclusion:
- return "DW_TAG_common_inclusion";
- case DW_TAG_inheritance:
- return "DW_TAG_inheritance";
- case DW_TAG_inlined_subroutine:
- return "DW_TAG_inlined_subroutine";
- case DW_TAG_module:
- return "DW_TAG_module";
- case DW_TAG_ptr_to_member_type:
- return "DW_TAG_ptr_to_member_type";
- case DW_TAG_set_type:
- return "DW_TAG_set_type";
- case DW_TAG_subrange_type:
- return "DW_TAG_subrange_type";
- case DW_TAG_with_stmt:
- return "DW_TAG_with_stmt";
- case DW_TAG_access_declaration:
- return "DW_TAG_access_declaration";
- case DW_TAG_base_type:
- return "DW_TAG_base_type";
- case DW_TAG_catch_block:
- return "DW_TAG_catch_block";
- case DW_TAG_const_type:
- return "DW_TAG_const_type";
- case DW_TAG_constant:
- return "DW_TAG_constant";
- case DW_TAG_enumerator:
- return "DW_TAG_enumerator";
- case DW_TAG_file_type:
- return "DW_TAG_file_type";
- case DW_TAG_friend:
- return "DW_TAG_friend";
- case DW_TAG_namelist:
- return "DW_TAG_namelist";
- case DW_TAG_namelist_item:
- return "DW_TAG_namelist_item";
- case DW_TAG_packed_type:
- return "DW_TAG_packed_type";
- case DW_TAG_subprogram:
- return "DW_TAG_subprogram";
- case DW_TAG_template_type_param:
- return "DW_TAG_template_type_param";
- case DW_TAG_template_value_param:
- return "DW_TAG_template_value_param";
- case DW_TAG_thrown_type:
- return "DW_TAG_thrown_type";
- case DW_TAG_try_block:
- return "DW_TAG_try_block";
- case DW_TAG_variant_part:
- return "DW_TAG_variant_part";
- case DW_TAG_variable:
- return "DW_TAG_variable";
- case DW_TAG_volatile_type:
- return "DW_TAG_volatile_type";
- case DW_TAG_MIPS_loop:
- return "DW_TAG_MIPS_loop";
- case DW_TAG_format_label:
- return "DW_TAG_format_label";
- case DW_TAG_function_template:
- return "DW_TAG_function_template";
- case DW_TAG_class_template:
- return "DW_TAG_class_template";
- default:
- return "DW_TAG_<unknown>";
- }
-}
-
-/* Convert a DWARF attribute code into its string name. */
-
-static char *
-dwarf_attr_name (attr)
- register unsigned attr;
-{
- switch (attr)
- {
- case DW_AT_sibling:
- return "DW_AT_sibling";
- case DW_AT_location:
- return "DW_AT_location";
- case DW_AT_name:
- return "DW_AT_name";
- case DW_AT_ordering:
- return "DW_AT_ordering";
- case DW_AT_subscr_data:
- return "DW_AT_subscr_data";
- case DW_AT_byte_size:
- return "DW_AT_byte_size";
- case DW_AT_bit_offset:
- return "DW_AT_bit_offset";
- case DW_AT_bit_size:
- return "DW_AT_bit_size";
- case DW_AT_element_list:
- return "DW_AT_element_list";
- case DW_AT_stmt_list:
- return "DW_AT_stmt_list";
- case DW_AT_low_pc:
- return "DW_AT_low_pc";
- case DW_AT_high_pc:
- return "DW_AT_high_pc";
- case DW_AT_language:
- return "DW_AT_language";
- case DW_AT_member:
- return "DW_AT_member";
- case DW_AT_discr:
- return "DW_AT_discr";
- case DW_AT_discr_value:
- return "DW_AT_discr_value";
- case DW_AT_visibility:
- return "DW_AT_visibility";
- case DW_AT_import:
- return "DW_AT_import";
- case DW_AT_string_length:
- return "DW_AT_string_length";
- case DW_AT_common_reference:
- return "DW_AT_common_reference";
- case DW_AT_comp_dir:
- return "DW_AT_comp_dir";
- case DW_AT_const_value:
- return "DW_AT_const_value";
- case DW_AT_containing_type:
- return "DW_AT_containing_type";
- case DW_AT_default_value:
- return "DW_AT_default_value";
- case DW_AT_inline:
- return "DW_AT_inline";
- case DW_AT_is_optional:
- return "DW_AT_is_optional";
- case DW_AT_lower_bound:
- return "DW_AT_lower_bound";
- case DW_AT_producer:
- return "DW_AT_producer";
- case DW_AT_prototyped:
- return "DW_AT_prototyped";
- case DW_AT_return_addr:
- return "DW_AT_return_addr";
- case DW_AT_start_scope:
- return "DW_AT_start_scope";
- case DW_AT_stride_size:
- return "DW_AT_stride_size";
- case DW_AT_upper_bound:
- return "DW_AT_upper_bound";
- case DW_AT_abstract_origin:
- return "DW_AT_abstract_origin";
- case DW_AT_accessibility:
- return "DW_AT_accessibility";
- case DW_AT_address_class:
- return "DW_AT_address_class";
- case DW_AT_artificial:
- return "DW_AT_artificial";
- case DW_AT_base_types:
- return "DW_AT_base_types";
- case DW_AT_calling_convention:
- return "DW_AT_calling_convention";
- case DW_AT_count:
- return "DW_AT_count";
- case DW_AT_data_member_location:
- return "DW_AT_data_member_location";
- case DW_AT_decl_column:
- return "DW_AT_decl_column";
- case DW_AT_decl_file:
- return "DW_AT_decl_file";
- case DW_AT_decl_line:
- return "DW_AT_decl_line";
- case DW_AT_declaration:
- return "DW_AT_declaration";
- case DW_AT_discr_list:
- return "DW_AT_discr_list";
- case DW_AT_encoding:
- return "DW_AT_encoding";
- case DW_AT_external:
- return "DW_AT_external";
- case DW_AT_frame_base:
- return "DW_AT_frame_base";
- case DW_AT_friend:
- return "DW_AT_friend";
- case DW_AT_identifier_case:
- return "DW_AT_identifier_case";
- case DW_AT_macro_info:
- return "DW_AT_macro_info";
- case DW_AT_namelist_items:
- return "DW_AT_namelist_items";
- case DW_AT_priority:
- return "DW_AT_priority";
- case DW_AT_segment:
- return "DW_AT_segment";
- case DW_AT_specification:
- return "DW_AT_specification";
- case DW_AT_static_link:
- return "DW_AT_static_link";
- case DW_AT_type:
- return "DW_AT_type";
- case DW_AT_use_location:
- return "DW_AT_use_location";
- case DW_AT_variable_parameter:
- return "DW_AT_variable_parameter";
- case DW_AT_virtuality:
- return "DW_AT_virtuality";
- case DW_AT_vtable_elem_location:
- return "DW_AT_vtable_elem_location";
-
-#ifdef MIPS
- case DW_AT_MIPS_fde:
- return "DW_AT_MIPS_fde";
- case DW_AT_MIPS_loop_begin:
- return "DW_AT_MIPS_loop_begin";
- case DW_AT_MIPS_tail_loop_begin:
- return "DW_AT_MIPS_tail_loop_begin";
- case DW_AT_MIPS_epilog_begin:
- return "DW_AT_MIPS_epilog_begin";
- case DW_AT_MIPS_loop_unroll_factor:
- return "DW_AT_MIPS_loop_unroll_factor";
- case DW_AT_MIPS_software_pipeline_depth:
- return "DW_AT_MIPS_software_pipeline_depth";
- case DW_AT_MIPS_linkage_name:
- return "DW_AT_MIPS_linkage_name";
-#endif
-
- case DW_AT_sf_names:
- return "DW_AT_sf_names";
- case DW_AT_src_info:
- return "DW_AT_src_info";
- case DW_AT_mac_info:
- return "DW_AT_mac_info";
- case DW_AT_src_coords:
- return "DW_AT_src_coords";
- case DW_AT_body_begin:
- return "DW_AT_body_begin";
- case DW_AT_body_end:
- return "DW_AT_body_end";
- default:
- return "DW_AT_<unknown>";
- }
-}
-
-/* Convert a DWARF value form code into its string name. */
-
-static char *
-dwarf_form_name (form)
- register unsigned form;
-{
- switch (form)
- {
- case DW_FORM_addr:
- return "DW_FORM_addr";
- case DW_FORM_block2:
- return "DW_FORM_block2";
- case DW_FORM_block4:
- return "DW_FORM_block4";
- case DW_FORM_data2:
- return "DW_FORM_data2";
- case DW_FORM_data4:
- return "DW_FORM_data4";
- case DW_FORM_data8:
- return "DW_FORM_data8";
- case DW_FORM_string:
- return "DW_FORM_string";
- case DW_FORM_block:
- return "DW_FORM_block";
- case DW_FORM_block1:
- return "DW_FORM_block1";
- case DW_FORM_data1:
- return "DW_FORM_data1";
- case DW_FORM_flag:
- return "DW_FORM_flag";
- case DW_FORM_sdata:
- return "DW_FORM_sdata";
- case DW_FORM_strp:
- return "DW_FORM_strp";
- case DW_FORM_udata:
- return "DW_FORM_udata";
- case DW_FORM_ref_addr:
- return "DW_FORM_ref_addr";
- case DW_FORM_ref1:
- return "DW_FORM_ref1";
- case DW_FORM_ref2:
- return "DW_FORM_ref2";
- case DW_FORM_ref4:
- return "DW_FORM_ref4";
- case DW_FORM_ref8:
- return "DW_FORM_ref8";
- case DW_FORM_ref_udata:
- return "DW_FORM_ref_udata";
- case DW_FORM_indirect:
- return "DW_FORM_indirect";
- default:
- return "DW_FORM_<unknown>";
- }
-}
-
-/* Convert a DWARF stack opcode into its string name. */
-
-static char *
-dwarf_stack_op_name (op)
- register unsigned op;
-{
- switch (op)
- {
- case DW_OP_addr:
- return "DW_OP_addr";
- case DW_OP_deref:
- return "DW_OP_deref";
- case DW_OP_const1u:
- return "DW_OP_const1u";
- case DW_OP_const1s:
- return "DW_OP_const1s";
- case DW_OP_const2u:
- return "DW_OP_const2u";
- case DW_OP_const2s:
- return "DW_OP_const2s";
- case DW_OP_const4u:
- return "DW_OP_const4u";
- case DW_OP_const4s:
- return "DW_OP_const4s";
- case DW_OP_const8u:
- return "DW_OP_const8u";
- case DW_OP_const8s:
- return "DW_OP_const8s";
- case DW_OP_constu:
- return "DW_OP_constu";
- case DW_OP_consts:
- return "DW_OP_consts";
- case DW_OP_dup:
- return "DW_OP_dup";
- case DW_OP_drop:
- return "DW_OP_drop";
- case DW_OP_over:
- return "DW_OP_over";
- case DW_OP_pick:
- return "DW_OP_pick";
- case DW_OP_swap:
- return "DW_OP_swap";
- case DW_OP_rot:
- return "DW_OP_rot";
- case DW_OP_xderef:
- return "DW_OP_xderef";
- case DW_OP_abs:
- return "DW_OP_abs";
- case DW_OP_and:
- return "DW_OP_and";
- case DW_OP_div:
- return "DW_OP_div";
- case DW_OP_minus:
- return "DW_OP_minus";
- case DW_OP_mod:
- return "DW_OP_mod";
- case DW_OP_mul:
- return "DW_OP_mul";
- case DW_OP_neg:
- return "DW_OP_neg";
- case DW_OP_not:
- return "DW_OP_not";
- case DW_OP_or:
- return "DW_OP_or";
- case DW_OP_plus:
- return "DW_OP_plus";
- case DW_OP_plus_uconst:
- return "DW_OP_plus_uconst";
- case DW_OP_shl:
- return "DW_OP_shl";
- case DW_OP_shr:
- return "DW_OP_shr";
- case DW_OP_shra:
- return "DW_OP_shra";
- case DW_OP_xor:
- return "DW_OP_xor";
- case DW_OP_bra:
- return "DW_OP_bra";
- case DW_OP_eq:
- return "DW_OP_eq";
- case DW_OP_ge:
- return "DW_OP_ge";
- case DW_OP_gt:
- return "DW_OP_gt";
- case DW_OP_le:
- return "DW_OP_le";
- case DW_OP_lt:
- return "DW_OP_lt";
- case DW_OP_ne:
- return "DW_OP_ne";
- case DW_OP_skip:
- return "DW_OP_skip";
- case DW_OP_lit0:
- return "DW_OP_lit0";
- case DW_OP_lit1:
- return "DW_OP_lit1";
- case DW_OP_lit2:
- return "DW_OP_lit2";
- case DW_OP_lit3:
- return "DW_OP_lit3";
- case DW_OP_lit4:
- return "DW_OP_lit4";
- case DW_OP_lit5:
- return "DW_OP_lit5";
- case DW_OP_lit6:
- return "DW_OP_lit6";
- case DW_OP_lit7:
- return "DW_OP_lit7";
- case DW_OP_lit8:
- return "DW_OP_lit8";
- case DW_OP_lit9:
- return "DW_OP_lit9";
- case DW_OP_lit10:
- return "DW_OP_lit10";
- case DW_OP_lit11:
- return "DW_OP_lit11";
- case DW_OP_lit12:
- return "DW_OP_lit12";
- case DW_OP_lit13:
- return "DW_OP_lit13";
- case DW_OP_lit14:
- return "DW_OP_lit14";
- case DW_OP_lit15:
- return "DW_OP_lit15";
- case DW_OP_lit16:
- return "DW_OP_lit16";
- case DW_OP_lit17:
- return "DW_OP_lit17";
- case DW_OP_lit18:
- return "DW_OP_lit18";
- case DW_OP_lit19:
- return "DW_OP_lit19";
- case DW_OP_lit20:
- return "DW_OP_lit20";
- case DW_OP_lit21:
- return "DW_OP_lit21";
- case DW_OP_lit22:
- return "DW_OP_lit22";
- case DW_OP_lit23:
- return "DW_OP_lit23";
- case DW_OP_lit24:
- return "DW_OP_lit24";
- case DW_OP_lit25:
- return "DW_OP_lit25";
- case DW_OP_lit26:
- return "DW_OP_lit26";
- case DW_OP_lit27:
- return "DW_OP_lit27";
- case DW_OP_lit28:
- return "DW_OP_lit28";
- case DW_OP_lit29:
- return "DW_OP_lit29";
- case DW_OP_lit30:
- return "DW_OP_lit30";
- case DW_OP_lit31:
- return "DW_OP_lit31";
- case DW_OP_reg0:
- return "DW_OP_reg0";
- case DW_OP_reg1:
- return "DW_OP_reg1";
- case DW_OP_reg2:
- return "DW_OP_reg2";
- case DW_OP_reg3:
- return "DW_OP_reg3";
- case DW_OP_reg4:
- return "DW_OP_reg4";
- case DW_OP_reg5:
- return "DW_OP_reg5";
- case DW_OP_reg6:
- return "DW_OP_reg6";
- case DW_OP_reg7:
- return "DW_OP_reg7";
- case DW_OP_reg8:
- return "DW_OP_reg8";
- case DW_OP_reg9:
- return "DW_OP_reg9";
- case DW_OP_reg10:
- return "DW_OP_reg10";
- case DW_OP_reg11:
- return "DW_OP_reg11";
- case DW_OP_reg12:
- return "DW_OP_reg12";
- case DW_OP_reg13:
- return "DW_OP_reg13";
- case DW_OP_reg14:
- return "DW_OP_reg14";
- case DW_OP_reg15:
- return "DW_OP_reg15";
- case DW_OP_reg16:
- return "DW_OP_reg16";
- case DW_OP_reg17:
- return "DW_OP_reg17";
- case DW_OP_reg18:
- return "DW_OP_reg18";
- case DW_OP_reg19:
- return "DW_OP_reg19";
- case DW_OP_reg20:
- return "DW_OP_reg20";
- case DW_OP_reg21:
- return "DW_OP_reg21";
- case DW_OP_reg22:
- return "DW_OP_reg22";
- case DW_OP_reg23:
- return "DW_OP_reg23";
- case DW_OP_reg24:
- return "DW_OP_reg24";
- case DW_OP_reg25:
- return "DW_OP_reg25";
- case DW_OP_reg26:
- return "DW_OP_reg26";
- case DW_OP_reg27:
- return "DW_OP_reg27";
- case DW_OP_reg28:
- return "DW_OP_reg28";
- case DW_OP_reg29:
- return "DW_OP_reg29";
- case DW_OP_reg30:
- return "DW_OP_reg30";
- case DW_OP_reg31:
- return "DW_OP_reg31";
- case DW_OP_breg0:
- return "DW_OP_breg0";
- case DW_OP_breg1:
- return "DW_OP_breg1";
- case DW_OP_breg2:
- return "DW_OP_breg2";
- case DW_OP_breg3:
- return "DW_OP_breg3";
- case DW_OP_breg4:
- return "DW_OP_breg4";
- case DW_OP_breg5:
- return "DW_OP_breg5";
- case DW_OP_breg6:
- return "DW_OP_breg6";
- case DW_OP_breg7:
- return "DW_OP_breg7";
- case DW_OP_breg8:
- return "DW_OP_breg8";
- case DW_OP_breg9:
- return "DW_OP_breg9";
- case DW_OP_breg10:
- return "DW_OP_breg10";
- case DW_OP_breg11:
- return "DW_OP_breg11";
- case DW_OP_breg12:
- return "DW_OP_breg12";
- case DW_OP_breg13:
- return "DW_OP_breg13";
- case DW_OP_breg14:
- return "DW_OP_breg14";
- case DW_OP_breg15:
- return "DW_OP_breg15";
- case DW_OP_breg16:
- return "DW_OP_breg16";
- case DW_OP_breg17:
- return "DW_OP_breg17";
- case DW_OP_breg18:
- return "DW_OP_breg18";
- case DW_OP_breg19:
- return "DW_OP_breg19";
- case DW_OP_breg20:
- return "DW_OP_breg20";
- case DW_OP_breg21:
- return "DW_OP_breg21";
- case DW_OP_breg22:
- return "DW_OP_breg22";
- case DW_OP_breg23:
- return "DW_OP_breg23";
- case DW_OP_breg24:
- return "DW_OP_breg24";
- case DW_OP_breg25:
- return "DW_OP_breg25";
- case DW_OP_breg26:
- return "DW_OP_breg26";
- case DW_OP_breg27:
- return "DW_OP_breg27";
- case DW_OP_breg28:
- return "DW_OP_breg28";
- case DW_OP_breg29:
- return "DW_OP_breg29";
- case DW_OP_breg30:
- return "DW_OP_breg30";
- case DW_OP_breg31:
- return "DW_OP_breg31";
- case DW_OP_regx:
- return "DW_OP_regx";
- case DW_OP_fbreg:
- return "DW_OP_fbreg";
- case DW_OP_bregx:
- return "DW_OP_bregx";
- case DW_OP_piece:
- return "DW_OP_piece";
- case DW_OP_deref_size:
- return "DW_OP_deref_size";
- case DW_OP_xderef_size:
- return "DW_OP_xderef_size";
- case DW_OP_nop:
- return "DW_OP_nop";
- default:
- return "OP_<unknown>";
- }
-}
-
-static char *
-dwarf_bool_name (mybool)
- unsigned mybool;
-{
- if (mybool)
- return "TRUE";
- else
- return "FALSE";
-}
-
-/* Convert a DWARF type code into its string name. */
-
-static char *
-dwarf_type_encoding_name (enc)
- register unsigned enc;
-{
- switch (enc)
- {
- case DW_ATE_address:
- return "DW_ATE_address";
- case DW_ATE_boolean:
- return "DW_ATE_boolean";
- case DW_ATE_complex_float:
- return "DW_ATE_complex_float";
- case DW_ATE_float:
- return "DW_ATE_float";
- case DW_ATE_signed:
- return "DW_ATE_signed";
- case DW_ATE_signed_char:
- return "DW_ATE_signed_char";
- case DW_ATE_unsigned:
- return "DW_ATE_unsigned";
- case DW_ATE_unsigned_char:
- return "DW_ATE_unsigned_char";
- default:
- return "DW_ATE_<unknown>";
- }
-}
-
-/* Convert a DWARF call frame info operation to its string name. */
-
-#if 0
-static char *
-dwarf_cfi_name (cfi_opc)
- register unsigned cfi_opc;
-{
- switch (cfi_opc)
- {
- case DW_CFA_advance_loc:
- return "DW_CFA_advance_loc";
- case DW_CFA_offset:
- return "DW_CFA_offset";
- case DW_CFA_restore:
- return "DW_CFA_restore";
- case DW_CFA_nop:
- return "DW_CFA_nop";
- case DW_CFA_set_loc:
- return "DW_CFA_set_loc";
- case DW_CFA_advance_loc1:
- return "DW_CFA_advance_loc1";
- case DW_CFA_advance_loc2:
- return "DW_CFA_advance_loc2";
- case DW_CFA_advance_loc4:
- return "DW_CFA_advance_loc4";
- case DW_CFA_offset_extended:
- return "DW_CFA_offset_extended";
- case DW_CFA_restore_extended:
- return "DW_CFA_restore_extended";
- case DW_CFA_undefined:
- return "DW_CFA_undefined";
- case DW_CFA_same_value:
- return "DW_CFA_same_value";
- case DW_CFA_register:
- return "DW_CFA_register";
- case DW_CFA_remember_state:
- return "DW_CFA_remember_state";
- case DW_CFA_restore_state:
- return "DW_CFA_restore_state";
- case DW_CFA_def_cfa:
- return "DW_CFA_def_cfa";
- case DW_CFA_def_cfa_register:
- return "DW_CFA_def_cfa_register";
- case DW_CFA_def_cfa_offset:
- return "DW_CFA_def_cfa_offset";
- /* SGI/MIPS specific */
- case DW_CFA_MIPS_advance_loc8:
- return "DW_CFA_MIPS_advance_loc8";
- default:
- return "DW_CFA_<unknown>";
- }
-}
-#endif
-
-void
-dump_die (die)
- struct die_info *die;
-{
- unsigned int i;
-
- fprintf (stderr, "Die: %s (abbrev = %d, offset = %d)\n",
- dwarf_tag_name (die->tag), die->abbrev, die->offset);
- fprintf (stderr, "\thas children: %s\n",
- dwarf_bool_name (die->has_children));
-
- fprintf (stderr, "\tattributes:\n");
- for (i = 0; i < die->num_attrs; ++i)
- {
- fprintf (stderr, "\t\t%s (%s) ",
- dwarf_attr_name (die->attrs[i].name),
- dwarf_form_name (die->attrs[i].form));
- switch (die->attrs[i].form)
- {
- case DW_FORM_ref_addr:
- case DW_FORM_addr:
- fprintf (stderr, "address: ");
- print_address_numeric (DW_ADDR (&die->attrs[i]), 1, gdb_stderr);
- break;
- case DW_FORM_block2:
- case DW_FORM_block4:
- case DW_FORM_block:
- case DW_FORM_block1:
- fprintf (stderr, "block: size %d", DW_BLOCK (&die->attrs[i])->size);
- break;
- case DW_FORM_data1:
- case DW_FORM_data2:
- case DW_FORM_data4:
- case DW_FORM_ref1:
- case DW_FORM_ref2:
- case DW_FORM_ref4:
- case DW_FORM_udata:
- case DW_FORM_sdata:
- fprintf (stderr, "constant: %d", DW_UNSND (&die->attrs[i]));
- break;
- case DW_FORM_string:
- fprintf (stderr, "string: \"%s\"",
- DW_STRING (&die->attrs[i])
- ? DW_STRING (&die->attrs[i]) : "");
- break;
- case DW_FORM_flag:
- if (DW_UNSND (&die->attrs[i]))
- fprintf (stderr, "flag: TRUE");
- else
- fprintf (stderr, "flag: FALSE");
- break;
- case DW_FORM_strp: /* we do not support separate string
- section yet */
- case DW_FORM_indirect: /* we do not handle indirect yet */
- case DW_FORM_data8: /* we do not have 64 bit quantities */
- default:
- fprintf (stderr, "unsupported attribute form: %d.",
- die->attrs[i].form);
- }
- fprintf (stderr, "\n");
- }
-}
-
-void
-dump_die_list (die)
- struct die_info *die;
-{
- while (die)
- {
- dump_die (die);
- die = die->next;
- }
-}
-
-void
-store_in_ref_table (offset, die)
- unsigned int offset;
- struct die_info *die;
-{
- int h;
- struct die_info *old;
-
- h = (offset % REF_HASH_SIZE);
- old = die_ref_table[h];
- die->next_ref = old;
- die_ref_table[h] = die;
-}
-
-
-static void
-dwarf2_empty_die_ref_table ()
-{
- memset (die_ref_table, 0, sizeof (die_ref_table));
-}
-
-static unsigned int
-dwarf2_get_ref_die_offset (attr)
- struct attribute *attr;
-{
- unsigned int result = 0;
-
- switch (attr->form)
- {
- case DW_FORM_ref_addr:
- result = DW_ADDR (attr);
- break;
- case DW_FORM_ref1:
- case DW_FORM_ref2:
- case DW_FORM_ref4:
- case DW_FORM_ref_udata:
- result = cu_header_offset + DW_UNSND (attr);
- break;
- default:
- complain (&dwarf2_unsupported_die_ref_attr, dwarf_form_name (attr->form));
- }
- return result;
-}
-
-struct die_info *
-follow_die_ref (offset)
- unsigned int offset;
-{
- struct die_info *die;
- int h;
-
- h = (offset % REF_HASH_SIZE);
- die = die_ref_table[h];
- while (die)
- {
- if (die->offset == offset)
- {
- return die;
- }
- die = die->next_ref;
- }
- return NULL;
-}
-
-static struct type *
-dwarf2_fundamental_type (objfile, typeid)
- struct objfile *objfile;
- int typeid;
-{
- if (typeid < 0 || typeid >= FT_NUM_MEMBERS)
- {
- error ("Dwarf Error: internal error - invalid fundamental type id %d.",
- typeid);
- }
-
- /* Look for this particular type in the fundamental type vector. If
- one is not found, create and install one appropriate for the
- current language and the current target machine. */
-
- if (ftypes[typeid] == NULL)
- {
- ftypes[typeid] = cu_language_defn->la_fund_type (objfile, typeid);
- }
-
- return (ftypes[typeid]);
-}
-
-/* Decode simple location descriptions.
- Given a pointer to a dwarf block that defines a location, compute
- the location and return the value.
-
- FIXME: This is a kludge until we figure out a better
- way to handle the location descriptions.
- Gdb's design does not mesh well with the DWARF2 notion of a location
- computing interpreter, which is a shame because the flexibility goes unused.
- FIXME: Implement more operations as necessary.
-
- A location description containing no operations indicates that the
- object is optimized out. The global optimized_out flag is set for
- those, the return value is meaningless.
-
- When the result is a register number, the global isreg flag is set,
- otherwise it is cleared.
-
- When the result is a base register offset, the global offreg flag is set
- and the register number is returned in basereg, otherwise it is cleared.
-
- When the DW_OP_fbreg operation is encountered without a corresponding
- DW_AT_frame_base attribute, the global islocal flag is set.
- Hopefully the machine dependent code knows how to set up a virtual
- frame pointer for the local references.
-
- Note that stack[0] is unused except as a default error return.
- Note that stack overflow is not yet handled. */
-
-static CORE_ADDR
-decode_locdesc (blk, objfile)
- struct dwarf_block *blk;
- struct objfile *objfile;
-{
- int i;
- int size = blk->size;
- char *data = blk->data;
- CORE_ADDR stack[64];
- int stacki;
- unsigned int bytes_read, unsnd;
- unsigned char op;
-
- i = 0;
- stacki = 0;
- stack[stacki] = 0;
- isreg = 0;
- offreg = 0;
- islocal = 0;
- optimized_out = 1;
-
- while (i < size)
- {
- optimized_out = 0;
- op = data[i++];
- switch (op)
- {
- case DW_OP_reg0:
- case DW_OP_reg1:
- case DW_OP_reg2:
- case DW_OP_reg3:
- case DW_OP_reg4:
- case DW_OP_reg5:
- case DW_OP_reg6:
- case DW_OP_reg7:
- case DW_OP_reg8:
- case DW_OP_reg9:
- case DW_OP_reg10:
- case DW_OP_reg11:
- case DW_OP_reg12:
- case DW_OP_reg13:
- case DW_OP_reg14:
- case DW_OP_reg15:
- case DW_OP_reg16:
- case DW_OP_reg17:
- case DW_OP_reg18:
- case DW_OP_reg19:
- case DW_OP_reg20:
- case DW_OP_reg21:
- case DW_OP_reg22:
- case DW_OP_reg23:
- case DW_OP_reg24:
- case DW_OP_reg25:
- case DW_OP_reg26:
- case DW_OP_reg27:
- case DW_OP_reg28:
- case DW_OP_reg29:
- case DW_OP_reg30:
- case DW_OP_reg31:
- isreg = 1;
- stack[++stacki] = op - DW_OP_reg0;
- break;
-
- case DW_OP_regx:
- isreg = 1;
- unsnd = read_unsigned_leb128 (NULL, (data + i), &bytes_read);
- i += bytes_read;
-#if defined(HARRIS_TARGET) && defined(_M88K)
- /* The Harris 88110 gdb ports have long kept their special reg
- numbers between their gp-regs and their x-regs. This is
- not how our dwarf is generated. Punt. */
- unsnd += 6;
-#endif
- stack[++stacki] = unsnd;
- break;
-
- case DW_OP_breg0:
- case DW_OP_breg1:
- case DW_OP_breg2:
- case DW_OP_breg3:
- case DW_OP_breg4:
- case DW_OP_breg5:
- case DW_OP_breg6:
- case DW_OP_breg7:
- case DW_OP_breg8:
- case DW_OP_breg9:
- case DW_OP_breg10:
- case DW_OP_breg11:
- case DW_OP_breg12:
- case DW_OP_breg13:
- case DW_OP_breg14:
- case DW_OP_breg15:
- case DW_OP_breg16:
- case DW_OP_breg17:
- case DW_OP_breg18:
- case DW_OP_breg19:
- case DW_OP_breg20:
- case DW_OP_breg21:
- case DW_OP_breg22:
- case DW_OP_breg23:
- case DW_OP_breg24:
- case DW_OP_breg25:
- case DW_OP_breg26:
- case DW_OP_breg27:
- case DW_OP_breg28:
- case DW_OP_breg29:
- case DW_OP_breg30:
- case DW_OP_breg31:
- offreg = 1;
- basereg = op - DW_OP_breg0;
- stack[++stacki] = read_signed_leb128 (NULL, (data + i), &bytes_read);
- i += bytes_read;
- break;
-
- case DW_OP_fbreg:
- stack[++stacki] = read_signed_leb128 (NULL, (data + i), &bytes_read);
- i += bytes_read;
- if (frame_base_reg >= 0)
- {
- offreg = 1;
- basereg = frame_base_reg;
- stack[stacki] += frame_base_offset;
- }
- else
- {
- complain (&dwarf2_missing_at_frame_base);
- islocal = 1;
- }
- break;
-
- case DW_OP_addr:
- stack[++stacki] = read_address (objfile->obfd, &data[i]);
- i += address_size;
- break;
-
- case DW_OP_const1u:
- stack[++stacki] = read_1_byte (objfile->obfd, &data[i]);
- i += 1;
- break;
-
- case DW_OP_const1s:
- stack[++stacki] = read_1_signed_byte (objfile->obfd, &data[i]);
- i += 1;
- break;
-
- case DW_OP_const2u:
- stack[++stacki] = read_2_bytes (objfile->obfd, &data[i]);
- i += 2;
- break;
-
- case DW_OP_const2s:
- stack[++stacki] = read_2_signed_bytes (objfile->obfd, &data[i]);
- i += 2;
- break;
-
- case DW_OP_const4u:
- stack[++stacki] = read_4_bytes (objfile->obfd, &data[i]);
- i += 4;
- break;
-
- case DW_OP_const4s:
- stack[++stacki] = read_4_signed_bytes (objfile->obfd, &data[i]);
- i += 4;
- break;
-
- case DW_OP_constu:
- stack[++stacki] = read_unsigned_leb128 (NULL, (data + i),
- &bytes_read);
- i += bytes_read;
- break;
-
- case DW_OP_consts:
- stack[++stacki] = read_signed_leb128 (NULL, (data + i), &bytes_read);
- i += bytes_read;
- break;
-
- case DW_OP_plus:
- stack[stacki - 1] += stack[stacki];
- stacki--;
- break;
-
- case DW_OP_plus_uconst:
- stack[stacki] += read_unsigned_leb128 (NULL, (data + i), &bytes_read);
- i += bytes_read;
- break;
-
- case DW_OP_minus:
- stack[stacki - 1] = stack[stacki] - stack[stacki - 1];
- stacki--;
- break;
-
- default:
- complain (&dwarf2_unsupported_stack_op, dwarf_stack_op_name(op));
- return (stack[stacki]);
- }
- }
- return (stack[stacki]);
-}
-
-/* memory allocation interface */
-
-/* ARGSUSED */
-static void
-dwarf2_free_tmp_obstack (ignore)
- PTR ignore;
-{
- obstack_free (&dwarf2_tmp_obstack, NULL);
-}
-
-static struct dwarf_block *
-dwarf_alloc_block ()
-{
- struct dwarf_block *blk;
-
- blk = (struct dwarf_block *)
- obstack_alloc (&dwarf2_tmp_obstack, sizeof (struct dwarf_block));
- return (blk);
-}
-
-static struct abbrev_info *
-dwarf_alloc_abbrev ()
-{
- struct abbrev_info *abbrev;
-
- abbrev = (struct abbrev_info *) xmalloc (sizeof (struct abbrev_info));
- memset (abbrev, 0, sizeof (struct abbrev_info));
- return (abbrev);
-}
-
-static struct die_info *
-dwarf_alloc_die ()
-{
- struct die_info *die;
-
- die = (struct die_info *) xmalloc (sizeof (struct die_info));
- memset (die, 0, sizeof (struct die_info));
- return (die);
-}