/* DWARF 2 debugging format support for GDB.
Copyright (C) 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003,
- 2004, 2005, 2006, 2007, 2008, 2009
+ 2004, 2005, 2006, 2007, 2008, 2009, 2010
Free Software Foundation, Inc.
Adapted by Gary Funck (gary@intrepid.com), Intrepid Technology,
#include "symtab.h"
#include "gdbtypes.h"
#include "objfiles.h"
-#include "elf/dwarf2.h"
+#include "dwarf2.h"
#include "buildsym.h"
#include "demangle.h"
#include "expression.h"
#include "hashtab.h"
#include "command.h"
#include "gdbcmd.h"
+#include "block.h"
#include "addrmap.h"
+#include "typeprint.h"
+#include "jv-lang.h"
+#include "psympriv.h"
#include <fcntl.h>
#include "gdb_string.h"
#endif
#ifdef HAVE_MMAP
#include <sys/mman.h>
+#ifndef MAP_FAILED
+#define MAP_FAILED ((void *) -1)
+#endif
#endif
#if 0
#define _ACTUAL_COMP_UNIT_HEADER_SIZE 11
#endif
-/* .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. */
gdb_byte *buffer;
bfd_size_type size;
int was_mmapped;
+ /* True if we have tried to read this section. */
+ int readin;
};
struct dwarf2_per_objfile
struct dwarf2_section_info info;
struct dwarf2_section_info abbrev;
struct dwarf2_section_info line;
- struct dwarf2_section_info pubnames;
- struct dwarf2_section_info aranges;
struct dwarf2_section_info loc;
struct dwarf2_section_info macinfo;
struct dwarf2_section_info str;
struct dwarf2_section_info ranges;
+ struct dwarf2_section_info types;
struct dwarf2_section_info frame;
struct dwarf2_section_info eh_frame;
+ /* Back link. */
+ struct objfile *objfile;
+
/* A list of all the compilation units. This is used to locate
the target compilation unit of a particular reference. */
struct dwarf2_per_cu_data **all_comp_units;
they can be freed later. */
struct dwarf2_per_cu_data *read_in_chain;
+ /* A table mapping .debug_types signatures to its signatured_type entry.
+ This is NULL if the .debug_types section hasn't been read in yet. */
+ htab_t signatured_types;
+
/* A flag indicating wether this objfile has a section loaded at a
VMA of 0. */
int has_section_at_zero;
#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"
#define RANGES_SECTION "debug_ranges"
+#define TYPES_SECTION "debug_types"
#define FRAME_SECTION "debug_frame"
#define EH_FRAME_SECTION "eh_frame"
/* Hash table holding all the loaded partial DIEs. */
htab_t partial_dies;
- /* `.debug_ranges' offset for this `DW_TAG_compile_unit' DIE. */
- unsigned int ranges_offset;
-
/* Storage for things with the same lifetime as this read-in compilation
unit, including partial DIEs. */
struct obstack comp_unit_obstack;
DIEs for namespaces, we don't need to try to infer them
from mangled names. */
unsigned int has_namespace_info : 1;
-
- /* Field `ranges_offset' is filled in; flag as the value may be zero. */
- unsigned int has_ranges_offset : 1;
};
/* Persistent data held for a compilation unit, even when not
struct dwarf2_per_cu_data
{
- /* The start offset and length of this compilation unit. 2**30-1
+ /* The start offset and length of this compilation unit. 2**29-1
bytes should suffice to store the length of any compilation unit
- if it doesn't, GDB will fall over anyway.
NOTE: Unlike comp_unit_head.length, this length includes
initial_length_size. */
unsigned int offset;
- unsigned int length : 30;
+ unsigned int length : 29;
/* Flag indicating this compilation unit will be read in before
any of the current compilation units are processed. */
hash table and don't find it. */
unsigned int load_all_dies : 1;
- /* Set iff currently read in. */
+ /* Non-zero if this CU is from .debug_types.
+ Otherwise it's from .debug_info. */
+ unsigned int from_debug_types : 1;
+
+ /* Set to non-NULL iff this CU is currently loaded. When it gets freed out
+ of the CU cache it gets reset to NULL again. */
struct dwarf2_cu *cu;
/* If full symbols for this CU have been read in, then this field
struct partial_symtab *psymtab;
};
+/* Entry in the signatured_types hash table. */
+
+struct signatured_type
+{
+ ULONGEST signature;
+
+ /* Offset in .debug_types of the TU (type_unit) for this type. */
+ unsigned int offset;
+
+ /* Offset in .debug_types of the type defined by this TU. */
+ unsigned int type_offset;
+
+ /* The CU(/TU) of this type. */
+ struct dwarf2_per_cu_data per_cu;
+};
+
+/* Struct used to pass misc. parameters to read_die_and_children, et. al.
+ which are used for both .debug_info and .debug_types dies.
+ All parameters here are unchanging for the life of the call.
+ This struct exists to abstract away the constant parameters of
+ die reading. */
+
+struct die_reader_specs
+{
+ /* The bfd of this objfile. */
+ bfd* abfd;
+
+ /* The CU of the DIE we are parsing. */
+ struct dwarf2_cu *cu;
+
+ /* Pointer to start of section buffer.
+ This is either the start of .debug_info or .debug_types. */
+ const gdb_byte *buffer;
+};
+
/* The line number information for a compilation unit (found in the
.debug_line section) begins with a "statement program header",
which contains the following information. */
unsigned short version;
unsigned int header_length;
unsigned char minimum_instruction_length;
+ unsigned char maximum_ops_per_instruction;
unsigned char default_is_stmt;
int line_base;
unsigned char line_range;
/* DWARF-2 tag for this DIE. */
ENUM_BITFIELD(dwarf_tag) tag : 16;
- /* Language code associated with this DIE. This is only used
- for the compilation unit DIE. */
- unsigned int language : 8;
-
/* Assorted flags describing the data found in this DIE. */
unsigned int has_children : 1;
unsigned int is_external : 1;
unsigned int is_declaration : 1;
unsigned int has_type : 1;
unsigned int has_specification : 1;
- unsigned int has_stmt_list : 1;
unsigned int has_pc_info : 1;
/* Flag set if the SCOPE field of this structure has been
unsigned int has_byte_size : 1;
/* The name of this DIE. Normally the value of DW_AT_name, but
- sometimes DW_TAG_MIPS_linkage_name or a string computed in some
- other fashion. */
+ sometimes a default name for unnamed DIEs. */
char *name;
- char *dirname;
/* The scope to prepend to our children. This is generally
allocated on the comp_unit_obstack, so will disappear
CORE_ADDR lowpc;
CORE_ADDR highpc;
- /* Pointer into the info_buffer pointing at the target of
+ /* Pointer into the info_buffer (or types_buffer) pointing at the target of
DW_AT_sibling, if any. */
gdb_byte *sibling;
DW_AT_extension). */
unsigned int spec_offset;
- /* If HAS_STMT_LIST, the offset of the Line Number Information data. */
- unsigned int line_offset;
-
/* Pointers to this DIE's parent, first child, and next sibling,
if any. */
struct partial_die_info *die_parent, *die_child, *die_sibling;
ENUM_BITFIELD(dwarf_form) form : 16;
};
-/* Additional GDB-specific attribute forms. */
-enum
- {
- /* A string which has been updated to GDB's internal
- representation (e.g. converted to canonical form) and does not
- need to be updated again. */
- GDB_FORM_cached_string = 0xff
- };
-
/* Attributes have a name and a value */
struct attribute
{
ENUM_BITFIELD(dwarf_attribute) name : 16;
- ENUM_BITFIELD(dwarf_form) form : 16;
+ ENUM_BITFIELD(dwarf_form) form : 15;
+
+ /* Has DW_STRING already been updated by dwarf2_canonicalize_name? This
+ field should be in u.str (existing only for DW_STRING) but it is kept
+ here for better struct attribute alignment. */
+ unsigned int string_is_canonical : 1;
+
union
{
char *str;
struct dwarf_block *blk;
- unsigned long unsnd;
- long int snd;
+ ULONGEST unsnd;
+ LONGEST snd;
CORE_ADDR addr;
+ struct signatured_type *signatured_type;
}
u;
};
/* Abbrev number */
unsigned int abbrev;
- /* Offset in .debug_info section */
+ /* Offset in .debug_info or .debug_types section. */
unsigned int offset;
/* The dies in a compilation unit form an n-ary tree. PARENT
/* Get at parts of an attribute structure */
#define DW_STRING(attr) ((attr)->u.str)
+#define DW_STRING_IS_CANONICAL(attr) ((attr)->string_is_canonical)
#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)
+#define DW_SIGNATURED_TYPE(attr) ((attr)->u.signatured_type)
/* Blocks are a bunch of untyped bytes. */
struct dwarf_block
#define DW_FIELD_ALLOC_CHUNK 4
#endif
-/* A zeroed version of a partial die for initialization purposes. */
-static struct partial_die_info zeroed_partial_die;
-
/* 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. */
int virtuality;
struct field field;
}
- *fields;
+ *fields, *baseclasses;
- /* Number of fields. */
+ /* Number of fields (including baseclasses). */
int nfields;
/* Number of baseclasses. */
/* Number of entries in the fnfieldlists array. */
int nfnfields;
+
+ /* typedefs defined inside this class. TYPEDEF_FIELD_LIST contains head of
+ a NULL terminated list of TYPEDEF_FIELD_LIST_COUNT elements. */
+ struct typedef_field_list
+ {
+ struct typedef_field field;
+ struct typedef_field_list *next;
+ }
+ *typedef_field_list;
+ unsigned typedef_field_list_count;
};
/* One item on the queue of compilation units to read in full symbols
static void dwarf2_locate_sections (bfd *, asection *, void *);
-#if 0
-static void dwarf2_build_psymtabs_easy (struct objfile *, int);
-#endif
-
static void dwarf2_create_include_psymtab (char *, struct partial_symtab *,
struct objfile *);
static void dwarf2_build_include_psymtabs (struct dwarf2_cu *,
- struct partial_die_info *,
+ struct die_info *,
struct partial_symtab *);
-static void dwarf2_build_psymtabs_hard (struct objfile *, int);
+static void dwarf2_build_psymtabs_hard (struct objfile *);
static void scan_partial_symbols (struct partial_die_info *,
CORE_ADDR *, CORE_ADDR *,
static void add_partial_symbol (struct partial_die_info *,
struct dwarf2_cu *);
-static int pdi_needs_namespace (enum dwarf_tag tag);
-
static void add_partial_namespace (struct partial_die_info *pdi,
CORE_ADDR *lowpc, CORE_ADDR *highpc,
int need_pc, struct dwarf2_cu *cu);
int need_pc, struct dwarf2_cu *cu);
static gdb_byte *locate_pdi_sibling (struct partial_die_info *orig_pdi,
- gdb_byte *info_ptr,
- bfd *abfd,
- struct dwarf2_cu *cu);
+ gdb_byte *buffer, gdb_byte *info_ptr,
+ bfd *abfd, struct dwarf2_cu *cu);
static void dwarf2_psymtab_to_symtab (struct partial_symtab *);
static struct abbrev_info *dwarf2_lookup_abbrev (unsigned int,
struct dwarf2_cu *);
-static struct partial_die_info *load_partial_dies (bfd *, gdb_byte *, int,
- struct dwarf2_cu *);
+static struct partial_die_info *load_partial_dies (bfd *,
+ gdb_byte *, gdb_byte *,
+ int, struct dwarf2_cu *);
static gdb_byte *read_partial_die (struct partial_die_info *,
- struct abbrev_info *abbrev, unsigned int,
- bfd *, gdb_byte *, struct dwarf2_cu *);
+ struct abbrev_info *abbrev,
+ unsigned int, bfd *,
+ gdb_byte *, gdb_byte *,
+ struct dwarf2_cu *);
static struct partial_die_info *find_partial_die (unsigned int,
struct dwarf2_cu *);
static void fixup_partial_die (struct partial_die_info *,
struct dwarf2_cu *);
-static gdb_byte *read_full_die (struct die_info **, bfd *, gdb_byte *,
- struct dwarf2_cu *, int *);
-
static gdb_byte *read_attribute (struct attribute *, struct attr_abbrev *,
bfd *, gdb_byte *, struct dwarf2_cu *);
static unsigned int read_4_bytes (bfd *, gdb_byte *);
-static unsigned long read_8_bytes (bfd *, gdb_byte *);
+static ULONGEST read_8_bytes (bfd *, gdb_byte *);
static CORE_ADDR read_address (bfd *, gdb_byte *ptr, struct dwarf2_cu *,
unsigned int *);
static struct attribute *dwarf2_attr (struct die_info *, unsigned int,
struct dwarf2_cu *);
+static struct attribute *dwarf2_attr_no_follow (struct die_info *,
+ unsigned int,
+ struct dwarf2_cu *);
+
static int dwarf2_flag_true_p (struct die_info *die, unsigned name,
struct dwarf2_cu *cu);
static struct type *die_type (struct die_info *, struct dwarf2_cu *);
+static int need_gnat_info (struct dwarf2_cu *);
+
+static struct type *die_descriptive_type (struct die_info *, struct dwarf2_cu *);
+
+static void set_descriptive_type (struct type *, struct die_info *,
+ struct dwarf2_cu *);
+
static struct type *die_containing_type (struct die_info *,
struct dwarf2_cu *);
static char *determine_prefix (struct die_info *die, struct dwarf2_cu *);
-static char *typename_concat (struct obstack *,
- const char *prefix,
- const char *suffix,
- struct dwarf2_cu *);
+static char *typename_concat (struct obstack *obs, const char *prefix,
+ const char *suffix, int physname,
+ struct dwarf2_cu *cu);
static void read_file_scope (struct die_info *, struct dwarf2_cu *);
+static void read_type_unit_scope (struct die_info *, struct dwarf2_cu *);
+
static void read_func_scope (struct die_info *, struct dwarf2_cu *);
static void read_lexical_block_scope (struct die_info *, struct dwarf2_cu *);
struct dwarf2_cu *, struct partial_symtab *);
static int dwarf2_get_pc_bounds (struct die_info *,
- CORE_ADDR *, CORE_ADDR *, struct dwarf2_cu *);
+ CORE_ADDR *, CORE_ADDR *, struct dwarf2_cu *,
+ struct partial_symtab *);
static void get_scope_pc_bounds (struct die_info *,
CORE_ADDR *, CORE_ADDR *,
static void process_structure_scope (struct die_info *, struct dwarf2_cu *);
-static const char *determine_class_name (struct die_info *die,
- struct dwarf2_cu *cu);
-
static void read_common_block (struct die_info *, struct dwarf2_cu *);
static void read_namespace (struct die_info *die, struct dwarf2_cu *);
static void read_import_statement (struct die_info *die, struct dwarf2_cu *);
+static struct type *read_module_type (struct die_info *die,
+ struct dwarf2_cu *cu);
+
static const char *namespace_name (struct die_info *die,
int *is_anonymous, struct dwarf2_cu *);
static CORE_ADDR decode_locdesc (struct dwarf_block *, struct dwarf2_cu *);
-static enum dwarf_array_dim_ordering read_array_order (struct die_info *,
+static enum dwarf_array_dim_ordering read_array_order (struct die_info *,
struct dwarf2_cu *);
-static struct die_info *read_comp_unit (gdb_byte *, bfd *, struct dwarf2_cu *);
+static struct die_info *read_comp_unit (gdb_byte *, struct dwarf2_cu *);
-static struct die_info *read_die_and_children_1 (gdb_byte *info_ptr, bfd *abfd,
- struct dwarf2_cu *,
+static struct die_info *read_die_and_children_1 (const struct die_reader_specs *reader,
+ gdb_byte *info_ptr,
gdb_byte **new_info_ptr,
struct die_info *parent);
-static struct die_info *read_die_and_children (gdb_byte *info_ptr, bfd *abfd,
- struct dwarf2_cu *,
+static struct die_info *read_die_and_children (const struct die_reader_specs *reader,
+ gdb_byte *info_ptr,
gdb_byte **new_info_ptr,
struct die_info *parent);
-static struct die_info *read_die_and_siblings (gdb_byte *info_ptr, bfd *abfd,
- struct dwarf2_cu *,
+static struct die_info *read_die_and_siblings (const struct die_reader_specs *reader,
+ gdb_byte *info_ptr,
gdb_byte **new_info_ptr,
struct die_info *parent);
-static void process_die (struct die_info *, struct dwarf2_cu *);
+static gdb_byte *read_full_die (const struct die_reader_specs *reader,
+ struct die_info **, gdb_byte *,
+ int *);
-static char *dwarf2_linkage_name (struct die_info *, struct dwarf2_cu *);
+static void process_die (struct die_info *, struct dwarf2_cu *);
static char *dwarf2_canonicalize_name (char *, struct dwarf2_cu *,
struct obstack *);
static char *dwarf_form_name (unsigned int);
-static char *dwarf_stack_op_name (unsigned int);
-
static char *dwarf_bool_name (unsigned int);
static char *dwarf_type_encoding_name (unsigned int);
static void store_in_ref_table (struct die_info *,
struct dwarf2_cu *);
+static int is_ref_attr (struct attribute *);
+
static unsigned int dwarf2_get_ref_die_offset (struct attribute *);
-static int dwarf2_get_attr_constant_value (struct attribute *, int);
+static LONGEST dwarf2_get_attr_constant_value (struct attribute *, int);
+
+static struct die_info *follow_die_ref_or_sig (struct die_info *,
+ struct attribute *,
+ struct dwarf2_cu **);
static struct die_info *follow_die_ref (struct die_info *,
struct attribute *,
struct dwarf2_cu **);
+static struct die_info *follow_die_sig (struct die_info *,
+ struct attribute *,
+ struct dwarf2_cu **);
+
+static void read_signatured_type_at_offset (struct objfile *objfile,
+ unsigned int offset);
+
+static void read_signatured_type (struct objfile *,
+ struct signatured_type *type_sig);
+
/* memory allocation interface */
static struct dwarf_block *dwarf_alloc_block (struct dwarf2_cu *);
struct symbol *sym,
struct dwarf2_cu *cu);
-static gdb_byte *skip_one_die (gdb_byte *info_ptr, struct abbrev_info *abbrev,
- struct dwarf2_cu *cu);
+static gdb_byte *skip_one_die (gdb_byte *buffer, gdb_byte *info_ptr,
+ struct abbrev_info *abbrev,
+ struct dwarf2_cu *cu);
static void free_stack_comp_unit (void *);
static struct dwarf2_per_cu_data *dwarf2_find_comp_unit
(unsigned int offset, struct objfile *objfile);
+static struct dwarf2_cu *alloc_one_comp_unit (struct objfile *objfile);
+
static void free_one_comp_unit (void *);
static void free_cached_comp_units (void *);
static void create_all_comp_units (struct objfile *);
-static struct dwarf2_cu *load_full_comp_unit (struct dwarf2_per_cu_data *,
- struct objfile *);
+static void load_full_comp_unit (struct dwarf2_per_cu_data *,
+ struct objfile *);
static void process_full_comp_unit (struct dwarf2_per_cu_data *);
int
dwarf2_has_info (struct objfile *objfile)
{
- struct dwarf2_per_objfile *data;
+ dwarf2_per_objfile = objfile_data (objfile, dwarf2_objfile_data_key);
+ if (!dwarf2_per_objfile)
+ {
+ /* Initialize per-objfile state. */
+ struct dwarf2_per_objfile *data
+ = obstack_alloc (&objfile->objfile_obstack, sizeof (*data));
- /* Initialize per-objfile state. */
- data = obstack_alloc (&objfile->objfile_obstack, sizeof (*data));
- memset (data, 0, sizeof (*data));
- set_objfile_data (objfile, dwarf2_objfile_data_key, data);
- dwarf2_per_objfile = data;
+ memset (data, 0, sizeof (*data));
+ set_objfile_data (objfile, dwarf2_objfile_data_key, data);
+ dwarf2_per_objfile = data;
- bfd_map_over_sections (objfile->obfd, dwarf2_locate_sections, NULL);
- return (data->info.asection != NULL && data->abbrev.asection != NULL);
+ bfd_map_over_sections (objfile->obfd, dwarf2_locate_sections, NULL);
+ dwarf2_per_objfile->objfile = objfile;
+ }
+ return (dwarf2_per_objfile->info.asection != NULL
+ && dwarf2_per_objfile->abbrev.asection != NULL);
}
/* When loading sections, we can either look for ".<name>", or for
dwarf2_per_objfile->line.asection = sectp;
dwarf2_per_objfile->line.size = bfd_get_section_size (sectp);
}
- else if (section_is_p (sectp->name, PUBNAMES_SECTION))
- {
- dwarf2_per_objfile->pubnames.asection = sectp;
- dwarf2_per_objfile->pubnames.size = bfd_get_section_size (sectp);
- }
- else if (section_is_p (sectp->name, ARANGES_SECTION))
- {
- dwarf2_per_objfile->aranges.asection = sectp;
- dwarf2_per_objfile->aranges.size = bfd_get_section_size (sectp);
- }
else if (section_is_p (sectp->name, LOC_SECTION))
{
dwarf2_per_objfile->loc.asection = sectp;
else if (section_is_p (sectp->name, EH_FRAME_SECTION))
{
flagword aflag = bfd_get_section_flags (ignore_abfd, sectp);
+
if (aflag & SEC_HAS_CONTENTS)
{
dwarf2_per_objfile->eh_frame.asection = sectp;
dwarf2_per_objfile->ranges.asection = sectp;
dwarf2_per_objfile->ranges.size = bfd_get_section_size (sectp);
}
+ else if (section_is_p (sectp->name, TYPES_SECTION))
+ {
+ dwarf2_per_objfile->types.asection = sectp;
+ dwarf2_per_objfile->types.size = bfd_get_section_size (sectp);
+ }
if ((bfd_get_section_flags (abfd, sectp) & SEC_LOAD)
&& bfd_section_vma (abfd, sectp) == 0)
gdb_byte *buf, *retbuf;
unsigned char header[4];
+ if (info->readin)
+ return;
info->buffer = NULL;
info->was_mmapped = 0;
+ info->readin = 1;
if (info->asection == NULL || info->size == 0)
return;
{
info->was_mmapped = 1;
info->buffer = retbuf + (sectp->filepos & (pagesize - 1)) ;
+#if HAVE_POSIX_MADVISE
+ posix_madvise (retbuf, map_length, POSIX_MADV_WILLNEED);
+#endif
return;
}
}
http://sourceware.org/ml/gdb-patches/2002-04/msg00136.html .
We never compress sections in .o files, so we only need to
try this when the section is not compressed. */
- retbuf = symfile_relocate_debug_section (abfd, sectp, buf);
+ retbuf = symfile_relocate_debug_section (objfile, sectp, buf);
if (retbuf != NULL)
{
info->buffer = retbuf;
struct dwarf2_per_objfile *data
= objfile_data (objfile, dwarf2_objfile_data_key);
struct dwarf2_section_info *info;
+
+ /* We may see an objfile without any DWARF, in which case we just
+ return nothing. */
+ if (data == NULL)
+ {
+ *sectp = NULL;
+ *bufp = NULL;
+ *sizep = 0;
+ return;
+ }
if (section_is_p (section_name, EH_FRAME_SECTION))
info = &data->eh_frame;
else if (section_is_p (section_name, FRAME_SECTION))
/* Build a partial symbol table. */
void
-dwarf2_build_psymtabs (struct objfile *objfile, int mainline)
+dwarf2_build_psymtabs (struct objfile *objfile)
{
- dwarf2_read_section (objfile, &dwarf2_per_objfile->info);
- dwarf2_read_section (objfile, &dwarf2_per_objfile->abbrev);
- dwarf2_read_section (objfile, &dwarf2_per_objfile->line);
- dwarf2_read_section (objfile, &dwarf2_per_objfile->str);
- dwarf2_read_section (objfile, &dwarf2_per_objfile->macinfo);
- dwarf2_read_section (objfile, &dwarf2_per_objfile->ranges);
- dwarf2_read_section (objfile, &dwarf2_per_objfile->loc);
- dwarf2_read_section (objfile, &dwarf2_per_objfile->eh_frame);
- dwarf2_read_section (objfile, &dwarf2_per_objfile->frame);
-
- if (mainline
- || (objfile->global_psymbols.size == 0
- && objfile->static_psymbols.size == 0))
+ if (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 significantly easier if we have .debug_aranges and
- .debug_pubnames sections */
-
- dwarf2_build_psymtabs_easy (objfile, mainline);
- }
- else
-#endif
- /* only test this case for now */
- {
- /* In this case we have to work a bit harder */
- dwarf2_build_psymtabs_hard (objfile, 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 (struct objfile *objfile, 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_section);
- pubnames_ptr = pubnames_buffer;
- while ((pubnames_ptr - pubnames_buffer) < dwarf2_per_objfile->pubnames.size)
- {
- unsigned int bytes_read;
-
- entry_length = read_initial_length (abfd, pubnames_ptr, &bytes_read);
- pubnames_ptr += bytes_read;
- 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_section);
-
+ dwarf2_build_psymtabs_hard (objfile);
}
-#endif
/* Return TRUE if OFFSET is within CU_HEADER. */
unsigned int top = (cu_header->offset
+ cu_header->length
+ cu_header->initial_length_size);
+
return (offset >= bottom && offset < top);
}
-/* Read in the comp unit header information from the debug_info at
- info_ptr. */
+/* Read in the comp unit header information from the debug_info at info_ptr.
+ NOTE: This leaves members offset, first_die_offset to be filled in
+ by the caller. */
static gdb_byte *
read_comp_unit_head (struct comp_unit_head *cu_header,
static gdb_byte *
partial_read_comp_unit_head (struct comp_unit_head *header, gdb_byte *info_ptr,
+ gdb_byte *buffer, unsigned int buffer_size,
bfd *abfd)
{
gdb_byte *beg_of_comp_unit = info_ptr;
info_ptr = read_comp_unit_head (header, info_ptr, abfd);
- if (header->version != 2 && header->version != 3)
+ if (header->version != 2 && header->version != 3 && header->version != 4)
error (_("Dwarf Error: wrong version in compilation unit header "
- "(is %d, should be %d) [in module %s]"), header->version,
- 2, bfd_get_filename (abfd));
+ "(is %d, should be 2, 3, or 4) [in module %s]"), header->version,
+ bfd_get_filename (abfd));
if (header->abbrev_offset >= dwarf2_per_objfile->abbrev.size)
error (_("Dwarf Error: bad offset (0x%lx) in compilation unit header "
"(offset 0x%lx + 6) [in module %s]"),
(long) header->abbrev_offset,
- (long) (beg_of_comp_unit - dwarf2_per_objfile->info.buffer),
+ (long) (beg_of_comp_unit - buffer),
bfd_get_filename (abfd));
if (beg_of_comp_unit + header->length + header->initial_length_size
- > dwarf2_per_objfile->info.buffer + dwarf2_per_objfile->info.size)
+ > buffer + buffer_size)
error (_("Dwarf Error: bad length (0x%lx) in compilation unit header "
"(offset 0x%lx + 0) [in module %s]"),
(long) header->length,
- (long) (beg_of_comp_unit - dwarf2_per_objfile->info.buffer),
+ (long) (beg_of_comp_unit - buffer),
bfd_get_filename (abfd));
return info_ptr;
}
+/* Read in the types comp unit header information from .debug_types entry at
+ types_ptr. The result is a pointer to one past the end of the header. */
+
+static gdb_byte *
+read_type_comp_unit_head (struct comp_unit_head *cu_header,
+ ULONGEST *signature,
+ gdb_byte *types_ptr, bfd *abfd)
+{
+ gdb_byte *initial_types_ptr = types_ptr;
+
+ dwarf2_read_section (dwarf2_per_objfile->objfile,
+ &dwarf2_per_objfile->types);
+ cu_header->offset = types_ptr - dwarf2_per_objfile->types.buffer;
+
+ types_ptr = read_comp_unit_head (cu_header, types_ptr, abfd);
+
+ *signature = read_8_bytes (abfd, types_ptr);
+ types_ptr += 8;
+ types_ptr += cu_header->offset_size;
+ cu_header->first_die_offset = types_ptr - initial_types_ptr;
+
+ return types_ptr;
+}
+
/* Allocate a new partial symtab for file named NAME and mark this new
partial symtab as being an include of PST. */
/* Read the Line Number Program data and extract the list of files
included by the source file represented by PST. Build an include
- partial symtab for each of these included files.
-
- This procedure assumes that there *is* a Line Number Program in
- the given CU. Callers should check that PDI->HAS_STMT_LIST is set
- before calling this procedure. */
+ partial symtab for each of these included files. */
static void
dwarf2_build_include_psymtabs (struct dwarf2_cu *cu,
- struct partial_die_info *pdi,
+ struct die_info *die,
struct partial_symtab *pst)
{
struct objfile *objfile = cu->objfile;
bfd *abfd = objfile->obfd;
- struct line_header *lh;
+ struct line_header *lh = NULL;
+ struct attribute *attr;
+
+ attr = dwarf2_attr (die, DW_AT_stmt_list, cu);
+ if (attr)
+ {
+ unsigned int line_offset = DW_UNSND (attr);
- lh = dwarf_decode_line_header (pdi->line_offset, abfd, cu);
+ lh = dwarf_decode_line_header (line_offset, abfd, cu);
+ }
if (lh == NULL)
return; /* No linetable, so no includes. */
free_line_header (lh);
}
-
-/* Build the partial symbol table by doing a quick pass through the
- .debug_info and .debug_abbrev sections. */
-
-static void
-dwarf2_build_psymtabs_hard (struct objfile *objfile, int mainline)
+static hashval_t
+hash_type_signature (const void *item)
{
- /* Instead of reading this into a big buffer, we should probably use
- mmap() on architectures that support it. (FIXME) */
- bfd *abfd = objfile->obfd;
- gdb_byte *info_ptr;
- gdb_byte *beg_of_comp_unit;
- struct partial_die_info comp_unit_die;
- struct partial_symtab *pst;
- struct cleanup *back_to;
- CORE_ADDR baseaddr;
+ const struct signatured_type *type_sig = item;
- info_ptr = dwarf2_per_objfile->info.buffer;
+ /* This drops the top 32 bits of the signature, but is ok for a hash. */
+ return type_sig->signature;
+}
- /* Any cached compilation units will be linked by the per-objfile
- read_in_chain. Make sure to free them when we're done. */
- back_to = make_cleanup (free_cached_comp_units, NULL);
+static int
+eq_type_signature (const void *item_lhs, const void *item_rhs)
+{
+ const struct signatured_type *lhs = item_lhs;
+ const struct signatured_type *rhs = item_rhs;
- create_all_comp_units (objfile);
+ return lhs->signature == rhs->signature;
+}
- objfile->psymtabs_addrmap = addrmap_create_mutable
- (&objfile->objfile_obstack);
+/* Create the hash table of all entries in the .debug_types section.
+ The result is zero if there is an error (e.g. missing .debug_types section),
+ otherwise non-zero. */
- /* Since the objects we're extracting from .debug_info vary in
- length, only the individual functions to extract them (like
- read_comp_unit_head and load_partial_die) can really know whether
- the buffer is large enough to hold another complete object.
+static int
+create_debug_types_hash_table (struct objfile *objfile)
+{
+ gdb_byte *info_ptr;
+ htab_t types_htab;
- At the moment, they don't actually check that. If .debug_info
- holds just one extra byte after the last compilation unit's dies,
- then read_comp_unit_head will happily read off the end of the
- buffer. read_partial_die is similarly casual. Those functions
- should be fixed.
+ dwarf2_read_section (objfile, &dwarf2_per_objfile->types);
+ info_ptr = dwarf2_per_objfile->types.buffer;
- For this loop condition, simply checking whether there's any data
- left at all should be sufficient. */
- while (info_ptr < (dwarf2_per_objfile->info.buffer
- + dwarf2_per_objfile->info.size))
+ if (info_ptr == NULL)
{
- struct cleanup *back_to_inner;
- struct dwarf2_cu cu;
- struct abbrev_info *abbrev;
- unsigned int bytes_read;
- struct dwarf2_per_cu_data *this_cu;
+ dwarf2_per_objfile->signatured_types = NULL;
+ return 0;
+ }
+
+ types_htab = htab_create_alloc_ex (41,
+ hash_type_signature,
+ eq_type_signature,
+ NULL,
+ &objfile->objfile_obstack,
+ hashtab_obstack_allocate,
+ dummy_obstack_deallocate);
- beg_of_comp_unit = info_ptr;
+ if (dwarf2_die_debug)
+ fprintf_unfiltered (gdb_stdlog, "Signatured types:\n");
- memset (&cu, 0, sizeof (cu));
+ while (info_ptr < dwarf2_per_objfile->types.buffer + dwarf2_per_objfile->types.size)
+ {
+ unsigned int offset;
+ unsigned int offset_size;
+ unsigned int type_offset;
+ unsigned int length, initial_length_size;
+ unsigned short version;
+ ULONGEST signature;
+ struct signatured_type *type_sig;
+ void **slot;
+ gdb_byte *ptr = info_ptr;
- obstack_init (&cu.comp_unit_obstack);
+ offset = ptr - dwarf2_per_objfile->types.buffer;
- back_to_inner = make_cleanup (free_stack_comp_unit, &cu);
+ /* We need to read the type's signature in order to build the hash
+ table, but we don't need to read anything else just yet. */
- cu.objfile = objfile;
- info_ptr = partial_read_comp_unit_head (&cu.header, info_ptr, abfd);
+ /* Sanity check to ensure entire cu is present. */
+ length = read_initial_length (objfile->obfd, ptr, &initial_length_size);
+ if (ptr + length + initial_length_size
+ > dwarf2_per_objfile->types.buffer + dwarf2_per_objfile->types.size)
+ {
+ complaint (&symfile_complaints,
+ _("debug type entry runs off end of `.debug_types' section, ignored"));
+ break;
+ }
- /* Complete the cu_header */
- cu.header.offset = beg_of_comp_unit - dwarf2_per_objfile->info.buffer;
- cu.header.first_die_offset = info_ptr - beg_of_comp_unit;
+ offset_size = initial_length_size == 4 ? 4 : 8;
+ ptr += initial_length_size;
+ version = bfd_get_16 (objfile->obfd, ptr);
+ ptr += 2;
+ ptr += offset_size; /* abbrev offset */
+ ptr += 1; /* address size */
+ signature = bfd_get_64 (objfile->obfd, ptr);
+ ptr += 8;
+ type_offset = read_offset_1 (objfile->obfd, ptr, offset_size);
- cu.list_in_scope = &file_symbols;
+ type_sig = obstack_alloc (&objfile->objfile_obstack, sizeof (*type_sig));
+ memset (type_sig, 0, sizeof (*type_sig));
+ type_sig->signature = signature;
+ type_sig->offset = offset;
+ type_sig->type_offset = type_offset;
- /* Read the abbrevs for this compilation unit into a table */
- dwarf2_read_abbrevs (abfd, &cu);
- make_cleanup (dwarf2_free_abbrev_table, &cu);
+ slot = htab_find_slot (types_htab, type_sig, INSERT);
+ gdb_assert (slot != NULL);
+ *slot = type_sig;
- this_cu = dwarf2_find_comp_unit (cu.header.offset, objfile);
+ if (dwarf2_die_debug)
+ fprintf_unfiltered (gdb_stdlog, " offset 0x%x, signature 0x%s\n",
+ offset, phex (signature, sizeof (signature)));
- /* Read the compilation unit die */
- abbrev = peek_die_abbrev (info_ptr, &bytes_read, &cu);
- info_ptr = read_partial_die (&comp_unit_die, abbrev, bytes_read,
- abfd, info_ptr, &cu);
+ info_ptr = info_ptr + initial_length_size + length;
+ }
- if (comp_unit_die.tag == DW_TAG_partial_unit)
- {
- info_ptr = (beg_of_comp_unit + cu.header.length
- + cu.header.initial_length_size);
- do_cleanups (back_to_inner);
- continue;
- }
+ dwarf2_per_objfile->signatured_types = types_htab;
- /* Set the language we're debugging */
- set_cu_language (comp_unit_die.language, &cu);
+ return 1;
+}
- /* Allocate a new partial symbol table structure */
- pst = start_psymtab_common (objfile, objfile->section_offsets,
- comp_unit_die.name ? comp_unit_die.name : "",
- /* TEXTLOW and TEXTHIGH are set below. */
- 0,
- objfile->global_psymbols.next,
- objfile->static_psymbols.next);
+/* Lookup a signature based type.
+ Returns NULL if SIG is not present in the table. */
- if (comp_unit_die.dirname)
- pst->dirname = obsavestring (comp_unit_die.dirname,
- strlen (comp_unit_die.dirname),
- &objfile->objfile_obstack);
+static struct signatured_type *
+lookup_signatured_type (struct objfile *objfile, ULONGEST sig)
+{
+ struct signatured_type find_entry, *entry;
- pst->read_symtab_private = (char *) this_cu;
+ if (dwarf2_per_objfile->signatured_types == NULL)
+ {
+ complaint (&symfile_complaints,
+ _("missing `.debug_types' section for DW_FORM_sig8 die"));
+ return 0;
+ }
- baseaddr = ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile));
+ find_entry.signature = sig;
+ entry = htab_find (dwarf2_per_objfile->signatured_types, &find_entry);
+ return entry;
+}
- /* Store the function that reads in the rest of the symbol table */
- pst->read_symtab = dwarf2_psymtab_to_symtab;
+/* Initialize a die_reader_specs struct from a dwarf2_cu struct. */
- /* If this compilation unit was already read in, free the
- cached copy in order to read it in again. This is
- necessary because we skipped some symbols when we first
- read in the compilation unit (see load_partial_dies).
- This problem could be avoided, but the benefit is
- unclear. */
- if (this_cu->cu != NULL)
- free_one_cached_comp_unit (this_cu->cu);
+static void
+init_cu_die_reader (struct die_reader_specs *reader,
+ struct dwarf2_cu *cu)
+{
+ reader->abfd = cu->objfile->obfd;
+ reader->cu = cu;
+ if (cu->per_cu->from_debug_types)
+ {
+ gdb_assert (dwarf2_per_objfile->types.readin);
+ reader->buffer = dwarf2_per_objfile->types.buffer;
+ }
+ else
+ {
+ gdb_assert (dwarf2_per_objfile->info.readin);
+ reader->buffer = dwarf2_per_objfile->info.buffer;
+ }
+}
- cu.per_cu = this_cu;
+/* Find the base address of the compilation unit for range lists and
+ location lists. It will normally be specified by DW_AT_low_pc.
+ In DWARF-3 draft 4, the base address could be overridden by
+ DW_AT_entry_pc. It's been removed, but GCC still uses this for
+ compilation units with discontinuous ranges. */
- /* Note that this is a pointer to our stack frame, being
- added to a global data structure. It will be cleaned up
- in free_stack_comp_unit when we finish with this
- compilation unit. */
- this_cu->cu = &cu;
+static void
+dwarf2_find_base_address (struct die_info *die, struct dwarf2_cu *cu)
+{
+ struct attribute *attr;
- this_cu->psymtab = pst;
+ cu->base_known = 0;
+ cu->base_address = 0;
- /* Possibly set the default values of LOWPC and HIGHPC from
- `DW_AT_ranges'. */
- if (cu.has_ranges_offset)
+ attr = dwarf2_attr (die, DW_AT_entry_pc, cu);
+ if (attr)
+ {
+ cu->base_address = DW_ADDR (attr);
+ cu->base_known = 1;
+ }
+ else
+ {
+ attr = dwarf2_attr (die, DW_AT_low_pc, cu);
+ if (attr)
{
- if (dwarf2_ranges_read (cu.ranges_offset, &comp_unit_die.lowpc,
- &comp_unit_die.highpc, &cu, pst))
- comp_unit_die.has_pc_info = 1;
+ cu->base_address = DW_ADDR (attr);
+ cu->base_known = 1;
}
- else if (comp_unit_die.has_pc_info
- && comp_unit_die.lowpc < comp_unit_die.highpc)
- /* Store the contiguous range if it is not empty; it can be empty for
- CUs with no code. */
- addrmap_set_empty (objfile->psymtabs_addrmap,
- comp_unit_die.lowpc + baseaddr,
- comp_unit_die.highpc + baseaddr - 1, pst);
-
- /* 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)
- {
- struct partial_die_info *first_die;
- CORE_ADDR lowpc, highpc;
-
- lowpc = ((CORE_ADDR) -1);
- highpc = ((CORE_ADDR) 0);
+ }
+}
- first_die = load_partial_dies (abfd, info_ptr, 1, &cu);
+/* Subroutine of process_type_comp_unit and dwarf2_build_psymtabs_hard
+ to combine the common parts.
+ Process a compilation unit for a psymtab.
+ BUFFER is a pointer to the beginning of the dwarf section buffer,
+ either .debug_info or debug_types.
+ INFO_PTR is a pointer to the start of the CU.
+ Returns a pointer to the next CU. */
- scan_partial_symbols (first_die, &lowpc, &highpc,
- ! comp_unit_die.has_pc_info, &cu);
+static gdb_byte *
+process_psymtab_comp_unit (struct objfile *objfile,
+ struct dwarf2_per_cu_data *this_cu,
+ gdb_byte *buffer, gdb_byte *info_ptr,
+ unsigned int buffer_size)
+{
+ bfd *abfd = objfile->obfd;
+ gdb_byte *beg_of_comp_unit = info_ptr;
+ struct die_info *comp_unit_die;
+ struct partial_symtab *pst;
+ CORE_ADDR baseaddr;
+ struct cleanup *back_to_inner;
+ struct dwarf2_cu cu;
+ int has_children, has_pc_info;
+ struct attribute *attr;
+ CORE_ADDR best_lowpc = 0, best_highpc = 0;
+ struct die_reader_specs reader_specs;
- /* If we didn't find a lowpc, set it to highpc to avoid
- complaints from `maint check'. */
- if (lowpc == ((CORE_ADDR) -1))
- lowpc = highpc;
+ memset (&cu, 0, sizeof (cu));
+ cu.objfile = objfile;
+ obstack_init (&cu.comp_unit_obstack);
- /* If the compilation unit didn't have an explicit address range,
- then use the information extracted from its child dies. */
- if (! comp_unit_die.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;
+ back_to_inner = make_cleanup (free_stack_comp_unit, &cu);
- 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);
+ info_ptr = partial_read_comp_unit_head (&cu.header, info_ptr,
+ buffer, buffer_size,
+ abfd);
- /* 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);
+ /* Complete the cu_header. */
+ cu.header.offset = beg_of_comp_unit - buffer;
+ cu.header.first_die_offset = info_ptr - beg_of_comp_unit;
+
+ cu.list_in_scope = &file_symbols;
+
+ /* If this compilation unit was already read in, free the
+ cached copy in order to read it in again. This is
+ necessary because we skipped some symbols when we first
+ read in the compilation unit (see load_partial_dies).
+ This problem could be avoided, but the benefit is
+ unclear. */
+ if (this_cu->cu != NULL)
+ free_one_cached_comp_unit (this_cu->cu);
+
+ /* Note that this is a pointer to our stack frame, being
+ added to a global data structure. It will be cleaned up
+ in free_stack_comp_unit when we finish with this
+ compilation unit. */
+ this_cu->cu = &cu;
+ cu.per_cu = this_cu;
- info_ptr = beg_of_comp_unit + cu.header.length
- + cu.header.initial_length_size;
+ /* Read the abbrevs for this compilation unit into a table. */
+ dwarf2_read_abbrevs (abfd, &cu);
+ make_cleanup (dwarf2_free_abbrev_table, &cu);
- if (comp_unit_die.has_stmt_list)
- {
- /* Get the list of files included in the current compilation unit,
- and build a psymtab for each of them. */
- dwarf2_build_include_psymtabs (&cu, &comp_unit_die, pst);
- }
+ /* Read the compilation unit die. */
+ if (this_cu->from_debug_types)
+ info_ptr += 8 /*signature*/ + cu.header.offset_size;
+ init_cu_die_reader (&reader_specs, &cu);
+ info_ptr = read_full_die (&reader_specs, &comp_unit_die, info_ptr,
+ &has_children);
+ if (this_cu->from_debug_types)
+ {
+ /* offset,length haven't been set yet for type units. */
+ this_cu->offset = cu.header.offset;
+ this_cu->length = cu.header.length + cu.header.initial_length_size;
+ }
+ else if (comp_unit_die->tag == DW_TAG_partial_unit)
+ {
+ info_ptr = (beg_of_comp_unit + cu.header.length
+ + cu.header.initial_length_size);
do_cleanups (back_to_inner);
+ return info_ptr;
}
- objfile->psymtabs_addrmap = addrmap_create_fixed (objfile->psymtabs_addrmap,
- &objfile->objfile_obstack);
+ /* Set the language we're debugging. */
+ attr = dwarf2_attr (comp_unit_die, DW_AT_language, &cu);
+ if (attr)
+ set_cu_language (DW_UNSND (attr), &cu);
+ else
+ set_cu_language (language_minimal, &cu);
- do_cleanups (back_to);
+ /* Allocate a new partial symbol table structure. */
+ attr = dwarf2_attr (comp_unit_die, DW_AT_name, &cu);
+ pst = start_psymtab_common (objfile, objfile->section_offsets,
+ (attr != NULL) ? DW_STRING (attr) : "",
+ /* TEXTLOW and TEXTHIGH are set below. */
+ 0,
+ objfile->global_psymbols.next,
+ objfile->static_psymbols.next);
+
+ attr = dwarf2_attr (comp_unit_die, DW_AT_comp_dir, &cu);
+ if (attr != NULL)
+ pst->dirname = DW_STRING (attr);
+
+ pst->read_symtab_private = this_cu;
+
+ baseaddr = ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile));
+
+ /* Store the function that reads in the rest of the symbol table */
+ pst->read_symtab = dwarf2_psymtab_to_symtab;
+
+ this_cu->psymtab = pst;
+
+ dwarf2_find_base_address (comp_unit_die, &cu);
+
+ /* Possibly set the default values of LOWPC and HIGHPC from
+ `DW_AT_ranges'. */
+ has_pc_info = dwarf2_get_pc_bounds (comp_unit_die, &best_lowpc,
+ &best_highpc, &cu, pst);
+ if (has_pc_info == 1 && best_lowpc < best_highpc)
+ /* Store the contiguous range if it is not empty; it can be empty for
+ CUs with no code. */
+ addrmap_set_empty (objfile->psymtabs_addrmap,
+ best_lowpc + baseaddr,
+ best_highpc + baseaddr - 1, pst);
+
+ /* 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 (has_children)
+ {
+ struct partial_die_info *first_die;
+ CORE_ADDR lowpc, highpc;
+
+ lowpc = ((CORE_ADDR) -1);
+ highpc = ((CORE_ADDR) 0);
+
+ first_die = load_partial_dies (abfd, buffer, info_ptr, 1, &cu);
+
+ scan_partial_symbols (first_die, &lowpc, &highpc,
+ ! has_pc_info, &cu);
+
+ /* If we didn't find a lowpc, set it to highpc to avoid
+ complaints from `maint check'. */
+ if (lowpc == ((CORE_ADDR) -1))
+ lowpc = highpc;
+
+ /* If the compilation unit didn't have an explicit address range,
+ then use the information extracted from its child dies. */
+ if (! has_pc_info)
+ {
+ best_lowpc = lowpc;
+ best_highpc = highpc;
+ }
+ }
+ pst->textlow = best_lowpc + baseaddr;
+ pst->texthigh = best_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);
+
+ info_ptr = (beg_of_comp_unit + cu.header.length
+ + cu.header.initial_length_size);
+
+ if (this_cu->from_debug_types)
+ {
+ /* It's not clear we want to do anything with stmt lists here.
+ Waiting to see what gcc ultimately does. */
+ }
+ else
+ {
+ /* Get the list of files included in the current compilation unit,
+ and build a psymtab for each of them. */
+ dwarf2_build_include_psymtabs (&cu, comp_unit_die, pst);
+ }
+
+ do_cleanups (back_to_inner);
+
+ return info_ptr;
+}
+
+/* Traversal function for htab_traverse_noresize.
+ Process one .debug_types comp-unit. */
+
+static int
+process_type_comp_unit (void **slot, void *info)
+{
+ struct signatured_type *entry = (struct signatured_type *) *slot;
+ struct objfile *objfile = (struct objfile *) info;
+ struct dwarf2_per_cu_data *this_cu;
+
+ this_cu = &entry->per_cu;
+ this_cu->from_debug_types = 1;
+
+ gdb_assert (dwarf2_per_objfile->types.readin);
+ process_psymtab_comp_unit (objfile, this_cu,
+ dwarf2_per_objfile->types.buffer,
+ dwarf2_per_objfile->types.buffer + entry->offset,
+ dwarf2_per_objfile->types.size);
+
+ return 1;
}
-/* Load the DIEs for a secondary CU into memory. */
+/* Subroutine of dwarf2_build_psymtabs_hard to simplify it.
+ Build partial symbol tables for the .debug_types comp-units. */
static void
-load_comp_unit (struct dwarf2_per_cu_data *this_cu, struct objfile *objfile)
+build_type_psymtabs (struct objfile *objfile)
+{
+ if (! create_debug_types_hash_table (objfile))
+ return;
+
+ htab_traverse_noresize (dwarf2_per_objfile->signatured_types,
+ process_type_comp_unit, objfile);
+}
+
+/* A cleanup function that clears objfile's psymtabs_addrmap field. */
+
+static void
+psymtabs_addrmap_cleanup (void *o)
+{
+ struct objfile *objfile = o;
+
+ objfile->psymtabs_addrmap = NULL;
+}
+
+/* Build the partial symbol table by doing a quick pass through the
+ .debug_info and .debug_abbrev sections. */
+
+static void
+dwarf2_build_psymtabs_hard (struct objfile *objfile)
+{
+ gdb_byte *info_ptr;
+ struct cleanup *back_to, *addrmap_cleanup;
+ struct obstack temp_obstack;
+
+ dwarf2_read_section (objfile, &dwarf2_per_objfile->info);
+ info_ptr = dwarf2_per_objfile->info.buffer;
+
+ /* Any cached compilation units will be linked by the per-objfile
+ read_in_chain. Make sure to free them when we're done. */
+ back_to = make_cleanup (free_cached_comp_units, NULL);
+
+ build_type_psymtabs (objfile);
+
+ create_all_comp_units (objfile);
+
+ /* Create a temporary address map on a temporary obstack. We later
+ copy this to the final obstack. */
+ obstack_init (&temp_obstack);
+ make_cleanup_obstack_free (&temp_obstack);
+ objfile->psymtabs_addrmap = addrmap_create_mutable (&temp_obstack);
+ addrmap_cleanup = make_cleanup (psymtabs_addrmap_cleanup, objfile);
+
+ /* Since the objects we're extracting from .debug_info vary in
+ length, only the individual functions to extract them (like
+ read_comp_unit_head and load_partial_die) can really know whether
+ the buffer is large enough to hold another complete object.
+
+ At the moment, they don't actually check that. If .debug_info
+ holds just one extra byte after the last compilation unit's dies,
+ then read_comp_unit_head will happily read off the end of the
+ buffer. read_partial_die is similarly casual. Those functions
+ should be fixed.
+
+ For this loop condition, simply checking whether there's any data
+ left at all should be sufficient. */
+
+ while (info_ptr < (dwarf2_per_objfile->info.buffer
+ + dwarf2_per_objfile->info.size))
+ {
+ struct dwarf2_per_cu_data *this_cu;
+
+ this_cu = dwarf2_find_comp_unit (info_ptr - dwarf2_per_objfile->info.buffer,
+ objfile);
+
+ info_ptr = process_psymtab_comp_unit (objfile, this_cu,
+ dwarf2_per_objfile->info.buffer,
+ info_ptr,
+ dwarf2_per_objfile->info.size);
+ }
+
+ objfile->psymtabs_addrmap = addrmap_create_fixed (objfile->psymtabs_addrmap,
+ &objfile->objfile_obstack);
+ discard_cleanups (addrmap_cleanup);
+
+ do_cleanups (back_to);
+}
+
+/* Load the partial DIEs for a secondary CU into memory. */
+
+static void
+load_partial_comp_unit (struct dwarf2_per_cu_data *this_cu,
+ struct objfile *objfile)
{
bfd *abfd = objfile->obfd;
gdb_byte *info_ptr, *beg_of_comp_unit;
- struct partial_die_info comp_unit_die;
+ struct die_info *comp_unit_die;
struct dwarf2_cu *cu;
- struct abbrev_info *abbrev;
- unsigned int bytes_read;
struct cleanup *back_to;
+ struct attribute *attr;
+ int has_children;
+ struct die_reader_specs reader_specs;
+ gdb_assert (! this_cu->from_debug_types);
+
+ gdb_assert (dwarf2_per_objfile->info.readin);
info_ptr = dwarf2_per_objfile->info.buffer + this_cu->offset;
beg_of_comp_unit = info_ptr;
- cu = xmalloc (sizeof (struct dwarf2_cu));
- memset (cu, 0, sizeof (struct dwarf2_cu));
+ cu = alloc_one_comp_unit (objfile);
- obstack_init (&cu->comp_unit_obstack);
+ /* ??? Missing cleanup for CU? */
- cu->objfile = objfile;
- info_ptr = partial_read_comp_unit_head (&cu->header, info_ptr, abfd);
+ /* Link this compilation unit into the compilation unit tree. */
+ this_cu->cu = cu;
+ cu->per_cu = this_cu;
+ cu->type_hash = this_cu->type_hash;
+
+ info_ptr = partial_read_comp_unit_head (&cu->header, info_ptr,
+ dwarf2_per_objfile->info.buffer,
+ dwarf2_per_objfile->info.size,
+ abfd);
/* Complete the cu_header. */
- cu->header.offset = beg_of_comp_unit - dwarf2_per_objfile->info.buffer;
+ cu->header.offset = this_cu->offset;
cu->header.first_die_offset = info_ptr - beg_of_comp_unit;
/* Read the abbrevs for this compilation unit into a table. */
back_to = make_cleanup (dwarf2_free_abbrev_table, cu);
/* Read the compilation unit die. */
- abbrev = peek_die_abbrev (info_ptr, &bytes_read, cu);
- info_ptr = read_partial_die (&comp_unit_die, abbrev, bytes_read,
- abfd, info_ptr, cu);
+ init_cu_die_reader (&reader_specs, cu);
+ info_ptr = read_full_die (&reader_specs, &comp_unit_die, info_ptr,
+ &has_children);
/* Set the language we're debugging. */
- set_cu_language (comp_unit_die.language, cu);
-
- /* Link this compilation unit into the compilation unit tree. */
- this_cu->cu = cu;
- cu->per_cu = this_cu;
- cu->type_hash = cu->per_cu->type_hash;
+ attr = dwarf2_attr (comp_unit_die, DW_AT_language, cu);
+ if (attr)
+ set_cu_language (DW_UNSND (attr), cu);
+ else
+ set_cu_language (language_minimal, cu);
/* 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)
- load_partial_dies (abfd, info_ptr, 0, cu);
+ if (has_children)
+ load_partial_dies (abfd, dwarf2_per_objfile->info.buffer, info_ptr, 0, cu);
do_cleanups (back_to);
}
int n_allocated;
int n_comp_units;
struct dwarf2_per_cu_data **all_comp_units;
- gdb_byte *info_ptr = dwarf2_per_objfile->info.buffer;
+ gdb_byte *info_ptr;
+
+ dwarf2_read_section (objfile, &dwarf2_per_objfile->info);
+ info_ptr = dwarf2_per_objfile->info.buffer;
n_comp_units = 0;
n_allocated = 10;
all_comp_units = xmalloc (n_allocated
* sizeof (struct dwarf2_per_cu_data *));
-
+
while (info_ptr < dwarf2_per_objfile->info.buffer + dwarf2_per_objfile->info.size)
{
unsigned int length, initial_length_size;
- gdb_byte *beg_of_comp_unit;
struct dwarf2_per_cu_data *this_cu;
unsigned int offset;
scan_partial_symbols (struct partial_die_info *first_die, CORE_ADDR *lowpc,
CORE_ADDR *highpc, int need_pc, struct dwarf2_cu *cu)
{
- struct objfile *objfile = cu->objfile;
- bfd *abfd = objfile->obfd;
struct partial_die_info *pdi;
/* Now, march along the PDI's, descending into ones which have
{
fixup_partial_die (pdi, cu);
- /* Anonymous namespaces have no name but have interesting
+ /* Anonymous namespaces or modules have no name but have interesting
children, so we need to look at them. Ditto for anonymous
enums. */
if (pdi->name != NULL || pdi->tag == DW_TAG_namespace
- || pdi->tag == DW_TAG_enumeration_type)
+ || pdi->tag == DW_TAG_module || pdi->tag == DW_TAG_enumeration_type)
{
switch (pdi->tag)
{
grandparent_scope = partial_die_parent_scope (parent, cu);
+ /* GCC 4.0 and 4.1 had a bug (PR c++/28460) where they generated bogus
+ DW_TAG_namespace DIEs with a name of "::" for the global namespace.
+ Work around this problem here. */
+ if (cu->language == language_cplus
+ && parent->tag == DW_TAG_namespace
+ && strcmp (parent->name, "::") == 0
+ && grandparent_scope == NULL)
+ {
+ parent->scope = NULL;
+ parent->scope_set = 1;
+ return NULL;
+ }
+
if (parent->tag == DW_TAG_namespace
+ || parent->tag == DW_TAG_module
|| parent->tag == DW_TAG_structure_type
|| parent->tag == DW_TAG_class_type
|| parent->tag == DW_TAG_interface_type
- || parent->tag == DW_TAG_union_type)
+ || parent->tag == DW_TAG_union_type
+ || parent->tag == DW_TAG_enumeration_type)
{
if (grandparent_scope == NULL)
parent->scope = parent->name;
else
parent->scope = typename_concat (&cu->comp_unit_obstack, grandparent_scope,
- parent->name, cu);
+ parent->name, 0, cu);
}
- else if (parent->tag == DW_TAG_enumeration_type)
+ else if (parent->tag == DW_TAG_enumerator)
/* Enumerators should not get the name of the enumeration as a prefix. */
parent->scope = grandparent_scope;
else
if (parent_scope == NULL)
return NULL;
else
- return typename_concat (NULL, parent_scope, pdi->name, cu);
+ return typename_concat (NULL, parent_scope, pdi->name, 0, cu);
}
static void
struct objfile *objfile = cu->objfile;
CORE_ADDR addr = 0;
char *actual_name = NULL;
- const char *my_prefix;
const struct partial_symbol *psym = NULL;
CORE_ADDR baseaddr;
int built_actual_name = 0;
baseaddr = ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile));
- if (pdi_needs_namespace (pdi->tag))
- {
- actual_name = partial_die_full_name (pdi, cu);
- if (actual_name)
- built_actual_name = 1;
- }
+ actual_name = partial_die_full_name (pdi, cu);
+ if (actual_name)
+ built_actual_name = 1;
if (actual_name == NULL)
actual_name = pdi->name;
/*prim_record_minimal_symbol (actual_name, pdi->lowpc + baseaddr,
mst_text, objfile); */
psym = add_psymbol_to_list (actual_name, strlen (actual_name),
+ built_actual_name,
VAR_DOMAIN, LOC_BLOCK,
&objfile->global_psymbols,
0, pdi->lowpc + baseaddr,
/*prim_record_minimal_symbol (actual_name, pdi->lowpc + baseaddr,
mst_file_text, objfile); */
psym = add_psymbol_to_list (actual_name, strlen (actual_name),
+ built_actual_name,
VAR_DOMAIN, LOC_BLOCK,
&objfile->static_psymbols,
0, pdi->lowpc + baseaddr,
addr = decode_locdesc (pdi->locdesc, cu);
if (pdi->locdesc || pdi->has_type)
psym = add_psymbol_to_list (actual_name, strlen (actual_name),
+ built_actual_name,
VAR_DOMAIN, LOC_STATIC,
&objfile->global_psymbols,
0, addr + baseaddr,
/*prim_record_minimal_symbol (actual_name, addr + baseaddr,
mst_file_data, objfile); */
psym = add_psymbol_to_list (actual_name, strlen (actual_name),
+ built_actual_name,
VAR_DOMAIN, LOC_STATIC,
&objfile->static_psymbols,
0, addr + baseaddr,
case DW_TAG_base_type:
case DW_TAG_subrange_type:
add_psymbol_to_list (actual_name, strlen (actual_name),
+ built_actual_name,
VAR_DOMAIN, LOC_TYPEDEF,
&objfile->static_psymbols,
0, (CORE_ADDR) 0, cu->language, objfile);
break;
case DW_TAG_namespace:
add_psymbol_to_list (actual_name, strlen (actual_name),
+ built_actual_name,
VAR_DOMAIN, LOC_TYPEDEF,
&objfile->global_psymbols,
0, (CORE_ADDR) 0, cu->language, objfile);
/* NOTE: carlton/2003-10-07: See comment in new_symbol about
static vs. global. */
add_psymbol_to_list (actual_name, strlen (actual_name),
+ built_actual_name,
STRUCT_DOMAIN, LOC_TYPEDEF,
(cu->language == language_cplus
|| cu->language == language_java)
break;
case DW_TAG_enumerator:
add_psymbol_to_list (actual_name, strlen (actual_name),
+ built_actual_name,
VAR_DOMAIN, LOC_CONST,
(cu->language == language_cplus
|| cu->language == language_java)
break;
}
- /* Check to see if we should scan the name for possible namespace
- info. Only do this if this is C++, if we don't have namespace
- debugging info in the file, if the psym is of an appropriate type
- (otherwise we'll have psym == NULL), and if we actually had a
- mangled name to begin with. */
-
- /* FIXME drow/2004-02-22: Why don't we do this for classes, i.e. the
- cases which do not set PSYM above? */
-
- if (cu->language == language_cplus
- && cu->has_namespace_info == 0
- && psym != NULL
- && SYMBOL_CPLUS_DEMANGLED_NAME (psym) != NULL)
- cp_check_possible_namespace_symbols (SYMBOL_CPLUS_DEMANGLED_NAME (psym),
- objfile);
-
if (built_actual_name)
xfree (actual_name);
}
-/* Determine whether a die of type TAG living in a C++ class or
- namespace needs to have the name of the scope prepended to the
- name listed in the die. */
-
-static int
-pdi_needs_namespace (enum dwarf_tag tag)
-{
- switch (tag)
- {
- case DW_TAG_namespace:
- case DW_TAG_typedef:
- case DW_TAG_class_type:
- case DW_TAG_interface_type:
- case DW_TAG_structure_type:
- case DW_TAG_union_type:
- case DW_TAG_enumeration_type:
- case DW_TAG_enumerator:
- return 1;
- default:
- return 0;
- }
-}
-
/* Read a partial die corresponding to a namespace; also, add a symbol
corresponding to that namespace to the symbol table. NAMESPACE is
the name of the enclosing namespace. */
CORE_ADDR *lowpc, CORE_ADDR *highpc,
int need_pc, struct dwarf2_cu *cu)
{
- struct objfile *objfile = cu->objfile;
-
/* Add a symbol for the namespace. */
add_partial_symbol (pdi, cu);
add_partial_module (struct partial_die_info *pdi, CORE_ADDR *lowpc,
CORE_ADDR *highpc, int need_pc, struct dwarf2_cu *cu)
{
- /* Now scan partial symbols in that module.
-
- FIXME: Support the separate Fortran module namespaces. */
+ /* Now scan partial symbols in that module. */
if (pdi->has_children)
scan_partial_symbols (pdi->die_child, lowpc, highpc, need_pc, cu);
symbol for that subprogram. When the CU language allows it, this
routine also defines a partial symbol for each nested subprogram
that this subprogram contains.
-
+
DIE my also be a lexical block, in which case we simply search
recursively for suprograms defined inside that lexical block.
Again, this is only performed when the CU language allows this
baseaddr = ANOFFSET (objfile->section_offsets,
SECT_OFF_TEXT (objfile));
addrmap_set_empty (objfile->psymtabs_addrmap,
- pdi->lowpc, pdi->highpc - 1,
+ pdi->lowpc + baseaddr,
+ pdi->highpc - 1 + baseaddr,
cu->per_cu->psymtab);
}
if (!pdi->is_declaration)
- add_partial_symbol (pdi, cu);
+ /* Ignore subprogram DIEs that do not have a name, they are
+ illegal. Do not emit a complaint at this point, we will
+ do so when we convert this psymtab into a symtab. */
+ if (pdi->name)
+ add_partial_symbol (pdi, cu);
}
}
-
+
if (! pdi->has_children)
return;
could fix this by only using the demangled name to get the
prefix (but see comment in read_structure_type). */
- struct partial_die_info *child_pdi = struct_pdi->die_child;
struct partial_die_info *real_pdi;
/* If this DIE (this DIE's specification, if any) has a parent, then
if (real_pdi->die_parent != NULL)
return;
-
- while (child_pdi != NULL)
- {
- if (child_pdi->tag == DW_TAG_subprogram)
- {
- char *actual_class_name
- = language_class_name_from_physname (cu->language_defn,
- child_pdi->name);
- if (actual_class_name != NULL)
- {
- struct_pdi->name
- = obsavestring (actual_class_name,
- strlen (actual_class_name),
- &cu->comp_unit_obstack);
- xfree (actual_class_name);
- }
- break;
- }
-
- child_pdi = child_pdi->die_sibling;
- }
}
}
add_partial_enumeration (struct partial_die_info *enum_pdi,
struct dwarf2_cu *cu)
{
- struct objfile *objfile = cu->objfile;
- bfd *abfd = objfile->obfd;
struct partial_die_info *pdi;
if (enum_pdi->name != NULL)
return abbrev;
}
-/* Scan the debug information for CU starting at INFO_PTR. Returns a
- pointer to the end of a series of DIEs, terminated by an empty
+/* Scan the debug information for CU starting at INFO_PTR in buffer BUFFER.
+ Returns a pointer to the end of a series of DIEs, terminated by an empty
DIE. Any children of the skipped DIEs will also be skipped. */
static gdb_byte *
-skip_children (gdb_byte *info_ptr, struct dwarf2_cu *cu)
+skip_children (gdb_byte *buffer, gdb_byte *info_ptr, struct dwarf2_cu *cu)
{
struct abbrev_info *abbrev;
unsigned int bytes_read;
if (abbrev == NULL)
return info_ptr + bytes_read;
else
- info_ptr = skip_one_die (info_ptr + bytes_read, abbrev, cu);
+ info_ptr = skip_one_die (buffer, info_ptr + bytes_read, abbrev, cu);
}
}
-/* Scan the debug information for CU starting at INFO_PTR. INFO_PTR
- should point just after the initial uleb128 of a DIE, and the
+/* Scan the debug information for CU starting at INFO_PTR in buffer BUFFER.
+ INFO_PTR should point just after the initial uleb128 of a DIE, and the
abbrev corresponding to that skipped uleb128 should be passed in
ABBREV. Returns a pointer to this DIE's sibling, skipping any
children. */
static gdb_byte *
-skip_one_die (gdb_byte *info_ptr, struct abbrev_info *abbrev,
- struct dwarf2_cu *cu)
+skip_one_die (gdb_byte *buffer, gdb_byte *info_ptr,
+ struct abbrev_info *abbrev, struct dwarf2_cu *cu)
{
unsigned int bytes_read;
struct attribute attr;
if (attr.form == DW_FORM_ref_addr)
complaint (&symfile_complaints, _("ignoring absolute DW_AT_sibling"));
else
- return dwarf2_per_objfile->info.buffer
- + dwarf2_get_ref_die_offset (&attr);
+ return buffer + dwarf2_get_ref_die_offset (&attr);
}
/* If it isn't DW_AT_sibling, skip this attribute. */
skip_attribute:
switch (form)
{
- case DW_FORM_addr:
case DW_FORM_ref_addr:
+ /* In DWARF 2, DW_FORM_ref_addr is address sized; in DWARF 3
+ and later it is offset sized. */
+ if (cu->header.version == 2)
+ info_ptr += cu->header.addr_size;
+ else
+ info_ptr += cu->header.offset_size;
+ break;
+ case DW_FORM_addr:
info_ptr += cu->header.addr_size;
break;
case DW_FORM_data1:
case DW_FORM_flag:
info_ptr += 1;
break;
+ case DW_FORM_flag_present:
+ break;
case DW_FORM_data2:
case DW_FORM_ref2:
info_ptr += 2;
break;
case DW_FORM_data8:
case DW_FORM_ref8:
+ case DW_FORM_sig8:
info_ptr += 8;
break;
case DW_FORM_string:
read_string (abfd, info_ptr, &bytes_read);
info_ptr += bytes_read;
break;
+ case DW_FORM_sec_offset:
case DW_FORM_strp:
info_ptr += cu->header.offset_size;
break;
+ case DW_FORM_exprloc:
case DW_FORM_block:
info_ptr += read_unsigned_leb128 (abfd, info_ptr, &bytes_read);
info_ptr += bytes_read;
}
if (abbrev->has_children)
- return skip_children (info_ptr, cu);
+ return skip_children (buffer, info_ptr, cu);
else
return info_ptr;
}
-/* Locate ORIG_PDI's sibling; INFO_PTR should point to the start of
- the next DIE after ORIG_PDI. */
+/* Locate ORIG_PDI's sibling.
+ INFO_PTR should point to the start of the next DIE after ORIG_PDI
+ in BUFFER. */
static gdb_byte *
-locate_pdi_sibling (struct partial_die_info *orig_pdi, gdb_byte *info_ptr,
+locate_pdi_sibling (struct partial_die_info *orig_pdi,
+ gdb_byte *buffer, gdb_byte *info_ptr,
bfd *abfd, struct dwarf2_cu *cu)
{
/* Do we know the sibling already? */
/* Skip the children the long way. */
- return skip_children (info_ptr, cu);
+ return skip_children (buffer, info_ptr, cu);
}
/* Expand this partial symbol table into a full symbol table. */
struct dwarf2_per_objfile *dpo_backlink
= objfile_data (pst->objfile->separate_debug_objfile_backlink,
dwarf2_objfile_data_key);
+
dwarf2_per_objfile->has_section_at_zero
= dpo_backlink->has_section_at_zero;
}
dwarf2_queue_tail->next = item;
dwarf2_queue_tail = item;
-
- /* Either PER_CU is the CU we want to process, or we're following a reference
- pointing into PER_CU. Either way, we need its DIEs now. */
- load_full_comp_unit (item->per_cu, objfile);
- item->per_cu->cu->read_in_chain = dwarf2_per_objfile->read_in_chain;
- dwarf2_per_objfile->read_in_chain = item->per_cu;
}
/* Process the queue. */
psymtab_to_symtab_1 (pst->dependencies[i]);
}
- per_cu = (struct dwarf2_per_cu_data *) pst->read_symtab_private;
+ per_cu = pst->read_symtab_private;
if (per_cu == NULL)
{
queue_comp_unit (per_cu, pst->objfile);
+ if (per_cu->from_debug_types)
+ read_signatured_type_at_offset (pst->objfile, per_cu->offset);
+ else
+ load_full_comp_unit (per_cu, pst->objfile);
+
process_queue (pst->objfile);
/* Age the cache, releasing compilation units that have not
do_cleanups (back_to);
}
-/* Load the DIEs associated with PST and PER_CU into memory. */
+/* Load the DIEs associated with PER_CU into memory. */
-static struct dwarf2_cu *
+static void
load_full_comp_unit (struct dwarf2_per_cu_data *per_cu, struct objfile *objfile)
{
bfd *abfd = objfile->obfd;
struct dwarf2_cu *cu;
unsigned int offset;
- gdb_byte *info_ptr;
+ gdb_byte *info_ptr, *beg_of_comp_unit;
struct cleanup *back_to, *free_cu_cleanup;
struct attribute *attr;
- CORE_ADDR baseaddr;
+
+ gdb_assert (! per_cu->from_debug_types);
/* Set local variables from the partial symbol table info. */
offset = per_cu->offset;
+ dwarf2_read_section (objfile, &dwarf2_per_objfile->info);
info_ptr = dwarf2_per_objfile->info.buffer + offset;
+ beg_of_comp_unit = info_ptr;
- cu = xmalloc (sizeof (struct dwarf2_cu));
- memset (cu, 0, sizeof (struct dwarf2_cu));
+ cu = alloc_one_comp_unit (objfile);
/* If an error occurs while loading, release our storage. */
free_cu_cleanup = make_cleanup (free_one_comp_unit, cu);
- cu->objfile = objfile;
-
- /* read in the comp_unit header */
+ /* Read in the comp_unit header. */
info_ptr = read_comp_unit_head (&cu->header, info_ptr, abfd);
- /* Read the abbrevs for this compilation unit */
+ /* Complete the cu_header. */
+ cu->header.offset = offset;
+ cu->header.first_die_offset = info_ptr - beg_of_comp_unit;
+
+ /* Read the abbrevs for this compilation unit. */
dwarf2_read_abbrevs (abfd, cu);
back_to = make_cleanup (dwarf2_free_abbrev_table, cu);
- cu->header.offset = offset;
-
- cu->per_cu = per_cu;
+ /* Link this compilation unit into the compilation unit tree. */
per_cu->cu = cu;
+ cu->per_cu = per_cu;
cu->type_hash = per_cu->type_hash;
- /* We use this obstack for block values in dwarf_alloc_block. */
- obstack_init (&cu->comp_unit_obstack);
-
- cu->dies = read_comp_unit (info_ptr, abfd, cu);
+ cu->dies = read_comp_unit (info_ptr, cu);
/* We try not to read any attributes in this function, because not
all objfiles needed for references have been loaded yet, and symbol
else
set_cu_language (language_minimal, cu);
+ /* Similarly, if we do not read the producer, we can not apply
+ producer-specific interpretation. */
+ attr = dwarf2_attr (cu->dies, DW_AT_producer, cu);
+ if (attr)
+ cu->producer = DW_STRING (attr);
+
+ /* Link this CU into read_in_chain. */
+ per_cu->cu->read_in_chain = dwarf2_per_objfile->read_in_chain;
+ dwarf2_per_objfile->read_in_chain = per_cu;
+
do_cleanups (back_to);
/* We've successfully allocated this compilation unit. Let our caller
clean it up when finished with it. */
discard_cleanups (free_cu_cleanup);
-
- return cu;
}
/* Generate full symbol information for PST and CU, whose DIEs have
struct partial_symtab *pst = per_cu->psymtab;
struct dwarf2_cu *cu = per_cu->cu;
struct objfile *objfile = pst->objfile;
- bfd *abfd = objfile->obfd;
CORE_ADDR lowpc, highpc;
struct symtab *symtab;
struct cleanup *back_to;
- struct attribute *attr;
CORE_ADDR baseaddr;
baseaddr = ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile));
cu->list_in_scope = &file_symbols;
- /* Find the base address of the compilation unit for range lists and
- location lists. It will normally be specified by DW_AT_low_pc.
- In DWARF-3 draft 4, the base address could be overridden by
- DW_AT_entry_pc. It's been removed, but GCC still uses this for
- compilation units with discontinuous ranges. */
-
- cu->base_known = 0;
- cu->base_address = 0;
-
- attr = dwarf2_attr (cu->dies, DW_AT_entry_pc, cu);
- if (attr)
- {
- cu->base_address = DW_ADDR (attr);
- cu->base_known = 1;
- }
- else
- {
- attr = dwarf2_attr (cu->dies, DW_AT_low_pc, cu);
- if (attr)
- {
- cu->base_address = DW_ADDR (attr);
- cu->base_known = 1;
- }
- }
+ dwarf2_find_base_address (cu->dies, cu);
/* Do line number decoding in read_file_scope () */
process_die (cu->dies, cu);
case DW_TAG_compile_unit:
read_file_scope (die, cu);
break;
- case DW_TAG_subprogram:
- read_func_scope (die, cu);
+ case DW_TAG_type_unit:
+ read_type_unit_scope (die, cu);
break;
+ case DW_TAG_subprogram:
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. */
+ read_func_scope (die, cu);
break;
case DW_TAG_lexical_block:
case DW_TAG_try_block:
case DW_TAG_base_type:
case DW_TAG_subrange_type:
case DW_TAG_typedef:
+ case DW_TAG_const_type:
+ case DW_TAG_volatile_type:
/* Add a typedef symbol for the type definition, if it has a
DW_AT_name. */
new_symbol (die, read_type_die (die, cu), cu);
read_namespace (die, cu);
break;
case DW_TAG_module:
+ processing_has_namespace_info = 1;
read_module (die, cu);
break;
case DW_TAG_imported_declaration:
}
}
+/* A helper function for dwarf2_compute_name which determines whether DIE
+ needs to have the name of the scope prepended to the name listed in the
+ die. */
+
+static int
+die_needs_namespace (struct die_info *die, struct dwarf2_cu *cu)
+{
+ struct attribute *attr;
+
+ switch (die->tag)
+ {
+ case DW_TAG_namespace:
+ case DW_TAG_typedef:
+ case DW_TAG_class_type:
+ case DW_TAG_interface_type:
+ case DW_TAG_structure_type:
+ case DW_TAG_union_type:
+ case DW_TAG_enumeration_type:
+ case DW_TAG_enumerator:
+ case DW_TAG_subprogram:
+ case DW_TAG_member:
+ return 1;
+
+ case DW_TAG_variable:
+ /* We only need to prefix "globally" visible variables. These include
+ any variable marked with DW_AT_external or any variable that
+ lives in a namespace. [Variables in anonymous namespaces
+ require prefixing, but they are not DW_AT_external.] */
+
+ if (dwarf2_attr (die, DW_AT_specification, cu))
+ {
+ struct dwarf2_cu *spec_cu = cu;
+
+ return die_needs_namespace (die_specification (die, &spec_cu),
+ spec_cu);
+ }
+
+ attr = dwarf2_attr (die, DW_AT_external, cu);
+ if (attr == NULL && die->parent->tag != DW_TAG_namespace
+ && die->parent->tag != DW_TAG_module)
+ return 0;
+ /* A variable in a lexical block of some kind does not need a
+ namespace, even though in C++ such variables may be external
+ and have a mangled name. */
+ if (die->parent->tag == DW_TAG_lexical_block
+ || die->parent->tag == DW_TAG_try_block
+ || die->parent->tag == DW_TAG_catch_block
+ || die->parent->tag == DW_TAG_subprogram)
+ return 0;
+ return 1;
+
+ default:
+ return 0;
+ }
+}
+
+/* Compute the fully qualified name of DIE in CU. If PHYSNAME is nonzero,
+ compute the physname for the object, which include a method's
+ formal parameters (C++/Java) and return type (Java).
+
+ For Ada, return the DIE's linkage name rather than the fully qualified
+ name. PHYSNAME is ignored..
+
+ The result is allocated on the objfile_obstack and canonicalized. */
+
+static const char *
+dwarf2_compute_name (char *name, struct die_info *die, struct dwarf2_cu *cu,
+ int physname)
+{
+ if (name == NULL)
+ name = dwarf2_name (die, cu);
+
+ /* For Fortran GDB prefers DW_AT_*linkage_name if present but otherwise
+ compute it by typename_concat inside GDB. */
+ if (cu->language == language_ada
+ || (cu->language == language_fortran && physname))
+ {
+ /* For Ada unit, we prefer the linkage name over the name, as
+ the former contains the exported name, which the user expects
+ to be able to reference. Ideally, we want the user to be able
+ to reference this entity using either natural or linkage name,
+ but we haven't started looking at this enhancement yet. */
+ struct attribute *attr;
+
+ attr = dwarf2_attr (die, DW_AT_linkage_name, cu);
+ if (attr == NULL)
+ attr = dwarf2_attr (die, DW_AT_MIPS_linkage_name, cu);
+ if (attr && DW_STRING (attr))
+ return DW_STRING (attr);
+ }
+
+ /* These are the only languages we know how to qualify names in. */
+ if (name != NULL
+ && (cu->language == language_cplus || cu->language == language_java
+ || cu->language == language_fortran))
+ {
+ if (die_needs_namespace (die, cu))
+ {
+ long length;
+ char *prefix;
+ struct ui_file *buf;
+
+ prefix = determine_prefix (die, cu);
+ buf = mem_fileopen ();
+ if (*prefix != '\0')
+ {
+ char *prefixed_name = typename_concat (NULL, prefix, name,
+ physname, cu);
+
+ fputs_unfiltered (prefixed_name, buf);
+ xfree (prefixed_name);
+ }
+ else
+ fputs_unfiltered (name ? name : "", buf);
+
+ /* For Java and C++ methods, append formal parameter type
+ information, if PHYSNAME. */
+
+ if (physname && die->tag == DW_TAG_subprogram
+ && (cu->language == language_cplus
+ || cu->language == language_java))
+ {
+ struct type *type = read_type_die (die, cu);
+
+ c_type_print_args (type, buf, 0, cu->language);
+
+ if (cu->language == language_java)
+ {
+ /* For java, we must append the return type to method
+ names. */
+ if (die->tag == DW_TAG_subprogram)
+ java_print_type (TYPE_TARGET_TYPE (type), "", buf,
+ 0, 0);
+ }
+ else if (cu->language == language_cplus)
+ {
+ if (TYPE_NFIELDS (type) > 0
+ && TYPE_FIELD_ARTIFICIAL (type, 0)
+ && TYPE_CONST (TYPE_TARGET_TYPE (TYPE_FIELD_TYPE (type, 0))))
+ fputs_unfiltered (" const", buf);
+ }
+ }
+
+ name = ui_file_obsavestring (buf, &cu->objfile->objfile_obstack,
+ &length);
+ ui_file_delete (buf);
+
+ if (cu->language == language_cplus)
+ {
+ char *cname
+ = dwarf2_canonicalize_name (name, cu,
+ &cu->objfile->objfile_obstack);
+
+ if (cname != NULL)
+ name = cname;
+ }
+ }
+ }
+
+ return name;
+}
+
/* Return the fully qualified name of DIE, based on its DW_AT_name.
If scope qualifiers are appropriate they will be added. The result
will be allocated on the objfile_obstack, or NULL if the DIE does
- not have a name. */
+ not have a name. NAME may either be from a previous call to
+ dwarf2_name or NULL.
+
+ The output string will be canonicalized (if C++/Java). */
static const char *
-dwarf2_full_name (struct die_info *die, struct dwarf2_cu *cu)
+dwarf2_full_name (char *name, struct die_info *die, struct dwarf2_cu *cu)
{
- struct attribute *attr;
- char *prefix, *name;
- struct ui_file *buf = NULL;
+ return dwarf2_compute_name (name, die, cu, 0);
+}
- name = dwarf2_name (die, cu);
- if (!name)
- return NULL;
+/* Construct a physname for the given DIE in CU. NAME may either be
+ from a previous call to dwarf2_name or NULL. The result will be
+ allocated on the objfile_objstack or NULL if the DIE does not have a
+ name.
- /* These are the only languages we know how to qualify names in. */
- if (cu->language != language_cplus
- && cu->language != language_java)
- return name;
-
- /* If no prefix is necessary for this type of DIE, return the
- unqualified name. The other three tags listed could be handled
- in pdi_needs_namespace, but that requires broader changes. */
- if (!pdi_needs_namespace (die->tag)
- && die->tag != DW_TAG_subprogram
- && die->tag != DW_TAG_variable
- && die->tag != DW_TAG_member)
- return name;
-
- prefix = determine_prefix (die, cu);
- if (*prefix != '\0')
- name = typename_concat (&cu->objfile->objfile_obstack, prefix,
- name, cu);
+ The output string will be canonicalized (if C++/Java). */
- return name;
+static const char *
+dwarf2_physname (char *name, struct die_info *die, struct dwarf2_cu *cu)
+{
+ return dwarf2_compute_name (name, die, cu, 1);
}
/* Read the import statement specified by the given die and record it. */
{
struct attribute *import_attr;
struct die_info *imported_die;
+ struct dwarf2_cu *imported_cu;
const char *imported_name;
+ const char *imported_name_prefix;
+ const char *canonical_name;
+ const char *import_alias;
+ const char *imported_declaration = NULL;
+ const char *import_prefix;
+
+ char *temp;
import_attr = dwarf2_attr (die, DW_AT_import, cu);
if (import_attr == NULL)
return;
}
- imported_die = follow_die_ref (die, import_attr, &cu);
- imported_name = dwarf2_name (imported_die, cu);
+ imported_cu = cu;
+ imported_die = follow_die_ref_or_sig (die, import_attr, &imported_cu);
+ imported_name = dwarf2_name (imported_die, imported_cu);
if (imported_name == NULL)
{
/* GCC bug: https://bugzilla.redhat.com/show_bug.cgi?id=506524
return;
}
- /* FIXME: dwarf2_name (die); for the local name after import. */
+ /* Figure out the local name after import. */
+ import_alias = dwarf2_name (die, cu);
+
+ /* Figure out where the statement is being imported to. */
+ import_prefix = determine_prefix (die, cu);
+
+ /* Figure out what the scope of the imported die is and prepend it
+ to the name of the imported die. */
+ imported_name_prefix = determine_prefix (imported_die, imported_cu);
+
+ if (imported_die->tag != DW_TAG_namespace
+ && imported_die->tag != DW_TAG_module)
+ {
+ imported_declaration = imported_name;
+ canonical_name = imported_name_prefix;
+ }
+ else if (strlen (imported_name_prefix) > 0)
+ {
+ temp = alloca (strlen (imported_name_prefix)
+ + 2 + strlen (imported_name) + 1);
+ strcpy (temp, imported_name_prefix);
+ strcat (temp, "::");
+ strcat (temp, imported_name);
+ canonical_name = temp;
+ }
+ else
+ canonical_name = imported_name;
- using_directives = cp_add_using (imported_name, strlen (imported_name), 0,
- using_directives);
+ cp_add_using_directive (import_prefix,
+ canonical_name,
+ import_alias,
+ imported_declaration,
+ &cu->objfile->objfile_obstack);
}
static void
read_file_scope (struct die_info *die, struct dwarf2_cu *cu)
{
struct objfile *objfile = cu->objfile;
- struct comp_unit_head *cu_header = &cu->header;
struct cleanup *back_to = make_cleanup (null_cleanup, 0);
CORE_ADDR lowpc = ((CORE_ADDR) -1);
CORE_ADDR highpc = ((CORE_ADDR) 0);
bfd *abfd = objfile->obfd;
struct line_header *line_header = 0;
CORE_ADDR baseaddr;
-
+
baseaddr = ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile));
get_scope_pc_bounds (die, &lowpc, &highpc, cu);
}
attr = dwarf2_attr (die, DW_AT_producer, cu);
- if (attr)
+ if (attr)
cu->producer = DW_STRING (attr);
/* We assume that we're processing GCC output. */
if (attr && line_header)
{
unsigned int macro_offset = DW_UNSND (attr);
+
dwarf_decode_macros (line_header, macro_offset,
comp_dir, abfd, cu);
}
do_cleanups (back_to);
}
+/* For TUs we want to skip the first top level sibling if it's not the
+ actual type being defined by this TU. In this case the first top
+ level sibling is there to provide context only. */
+
+static void
+read_type_unit_scope (struct die_info *die, struct dwarf2_cu *cu)
+{
+ struct objfile *objfile = cu->objfile;
+ struct cleanup *back_to = make_cleanup (null_cleanup, 0);
+ CORE_ADDR lowpc;
+ struct attribute *attr;
+ char *name = NULL;
+ char *comp_dir = NULL;
+ struct die_info *child_die;
+ bfd *abfd = objfile->obfd;
+
+ /* start_symtab needs a low pc, but we don't really have one.
+ Do what read_file_scope would do in the absence of such info. */
+ lowpc = ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile));
+
+ /* Find the filename. Do not use dwarf2_name here, since the filename
+ is not a source language identifier. */
+ attr = dwarf2_attr (die, DW_AT_name, cu);
+ if (attr)
+ name = DW_STRING (attr);
+
+ attr = dwarf2_attr (die, DW_AT_comp_dir, cu);
+ if (attr)
+ comp_dir = DW_STRING (attr);
+ else if (name != NULL && IS_ABSOLUTE_PATH (name))
+ {
+ comp_dir = ldirname (name);
+ if (comp_dir != NULL)
+ make_cleanup (xfree, comp_dir);
+ }
+
+ if (name == NULL)
+ name = "<unknown>";
+
+ attr = dwarf2_attr (die, DW_AT_language, cu);
+ if (attr)
+ set_cu_language (DW_UNSND (attr), cu);
+
+ /* This isn't technically needed today. It is done for symmetry
+ with read_file_scope. */
+ attr = dwarf2_attr (die, DW_AT_producer, cu);
+ if (attr)
+ cu->producer = DW_STRING (attr);
+
+ /* We assume that we're processing GCC output. */
+ processing_gcc_compilation = 2;
+
+ processing_has_namespace_info = 0;
+
+ start_symtab (name, comp_dir, lowpc);
+ record_debugformat ("DWARF 2");
+ record_producer (cu->producer);
+
+ /* Process the dies in the type unit. */
+ if (die->child == NULL)
+ {
+ dump_die_for_error (die);
+ error (_("Dwarf Error: Missing children for type unit [in module %s]"),
+ bfd_get_filename (abfd));
+ }
+
+ child_die = die->child;
+
+ while (child_die && child_die->tag)
+ {
+ process_die (child_die, cu);
+
+ child_die = sibling_die (child_die);
+ }
+
+ do_cleanups (back_to);
+}
+
static void
add_to_cu_func_list (const char *name, CORE_ADDR lowpc, CORE_ADDR highpc,
struct dwarf2_cu *cu)
return;
origin_die = follow_die_ref (die, attr, &cu);
- if (die->tag != origin_die->tag)
+ if (die->tag != origin_die->tag
+ && !(die->tag == DW_TAG_inlined_subroutine
+ && origin_die->tag == DW_TAG_subprogram))
complaint (&symfile_complaints,
_("DIE 0x%x and its abstract origin 0x%x have different tags"),
die->offset, origin_die->offset);
child_die = die->child;
while (child_die && child_die->tag)
{
- attr = dwarf2_attr (child_die, DW_AT_abstract_origin, cu);
+ /* For each CHILD_DIE, find the corresponding child of
+ ORIGIN_DIE. If there is more than one layer of
+ DW_AT_abstract_origin, follow them all; there shouldn't be,
+ but GCC versions at least through 4.4 generate this (GCC PR
+ 40573). */
+ struct die_info *child_origin_die = child_die;
+
+ while (1)
+ {
+ attr = dwarf2_attr (child_origin_die, DW_AT_abstract_origin, cu);
+ if (attr == NULL)
+ break;
+ child_origin_die = follow_die_ref (child_origin_die, attr, &cu);
+ }
+
/* According to DWARF3 3.3.8.2 #3 new entries without their abstract
counterpart may exist. */
- if (attr)
+ if (child_origin_die != child_die)
{
- struct die_info *child_origin_die;
-
- child_origin_die = follow_die_ref (child_die, attr, &cu);
- if (child_die->tag != child_origin_die->tag)
+ if (child_die->tag != child_origin_die->tag
+ && !(child_die->tag == DW_TAG_inlined_subroutine
+ && child_origin_die->tag == DW_TAG_subprogram))
complaint (&symfile_complaints,
_("Child DIE 0x%x and its abstract origin 0x%x have "
"different tags"), child_die->offset,
child_origin_die->offset);
- *offsets_end++ = child_origin_die->offset;
+ if (child_origin_die->parent != origin_die)
+ complaint (&symfile_complaints,
+ _("Child DIE 0x%x and its abstract origin 0x%x have "
+ "different parents"), child_die->offset,
+ child_origin_die->offset);
+ else
+ *offsets_end++ = child_origin_die->offset;
}
child_die = sibling_die (child_die);
}
CORE_ADDR lowpc;
CORE_ADDR highpc;
struct die_info *child_die;
- struct attribute *attr;
+ struct attribute *attr, *call_line, *call_file;
char *name;
CORE_ADDR baseaddr;
struct block *block;
+ int inlined_func = (die->tag == DW_TAG_inlined_subroutine);
+
+ if (inlined_func)
+ {
+ /* If we do not have call site information, we can't show the
+ caller of this inlined function. That's too confusing, so
+ only use the scope for local variables. */
+ call_line = dwarf2_attr (die, DW_AT_call_line, cu);
+ call_file = dwarf2_attr (die, DW_AT_call_file, cu);
+ if (call_line == NULL || call_file == NULL)
+ {
+ read_lexical_block_scope (die, cu);
+ return;
+ }
+ }
baseaddr = ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile));
- name = dwarf2_linkage_name (die, cu);
+ name = dwarf2_name (die, cu);
- /* 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, cu))
- return;
+ /* Ignore functions with missing or empty names. These are actually
+ illegal according to the DWARF standard. */
+ if (name == NULL)
+ {
+ complaint (&symfile_complaints,
+ _("missing name for subprogram DIE at %d"), die->offset);
+ return;
+ }
+
+ /* Ignore functions with missing or invalid low and high pc attributes. */
+ if (!dwarf2_get_pc_bounds (die, &lowpc, &highpc, cu, NULL))
+ {
+ attr = dwarf2_attr (die, DW_AT_external, cu);
+ if (!attr || !DW_UNSND (attr))
+ complaint (&symfile_complaints,
+ _("cannot get low and high bounds for subprogram DIE at %d"),
+ die->offset);
+ return;
+ }
lowpc += baseaddr;
highpc += baseaddr;
inherit_abstract_dies (die, cu);
+ /* If we have a DW_AT_specification, we might need to import using
+ directives from the context of the specification DIE. See the
+ comment in determine_prefix. */
+ if (cu->language == language_cplus
+ && dwarf2_attr (die, DW_AT_specification, cu))
+ {
+ struct dwarf2_cu *spec_cu = cu;
+ struct die_info *spec_die = die_specification (die, &spec_cu);
+
+ while (spec_die)
+ {
+ child_die = spec_die->child;
+ while (child_die && child_die->tag)
+ {
+ if (child_die->tag == DW_TAG_imported_module)
+ process_die (child_die, spec_cu);
+ child_die = sibling_die (child_die);
+ }
+
+ /* In some cases, GCC generates specification DIEs that
+ themselves contain DW_AT_specification attributes. */
+ spec_die = die_specification (spec_die, &spec_cu);
+ }
+ }
+
new = pop_context ();
/* Make a block for the local symbols within. */
block = finish_block (new->name, &local_symbols, new->old_blocks,
lowpc, highpc, objfile);
/* For C++, set the block's scope. */
- if (cu->language == language_cplus)
+ if (cu->language == language_cplus || cu->language == language_fortran)
cp_set_block_scope (new->name, block, &objfile->objfile_obstack,
determine_prefix (die, cu),
processing_has_namespace_info);
/* If we have address ranges, record them. */
dwarf2_record_block_ranges (die, block, baseaddr, cu);
-
+
/* In C++, we can have functions nested inside functions (e.g., when
a function declares a class that has methods). This means that
when we finish processing a function scope, we may need to go
/* Ignore blocks with missing or invalid low and high pc attributes. */
/* ??? Perhaps consider discontiguous blocks defined by DW_AT_ranges
as multiple lexical blocks? Handling children in a sane way would
- be nasty. Might be easier to properly extend generic blocks to
+ be nasty. Might be easier to properly extend generic blocks to
describe ranges. */
- if (!dwarf2_get_pc_bounds (die, &lowpc, &highpc, cu))
+ if (!dwarf2_get_pc_bounds (die, &lowpc, &highpc, cu, NULL))
return;
lowpc += baseaddr;
highpc += baseaddr;
}
new = pop_context ();
- if (local_symbols != NULL)
+ if (local_symbols != NULL || using_directives != NULL)
{
struct block *block
= finish_block (0, &local_symbols, new->old_blocks, new->start_addr,
found_base = cu->base_known;
base = cu->base_address;
+ dwarf2_read_section (objfile, &dwarf2_per_objfile->ranges);
if (offset >= dwarf2_per_objfile->ranges.size)
{
complaint (&symfile_complaints,
discontinuous, i.e. derived from DW_AT_ranges information. */
static int
dwarf2_get_pc_bounds (struct die_info *die, CORE_ADDR *lowpc,
- CORE_ADDR *highpc, struct dwarf2_cu *cu)
+ CORE_ADDR *highpc, struct dwarf2_cu *cu,
+ struct partial_symtab *pst)
{
struct attribute *attr;
CORE_ADDR low = 0;
{
/* Value of the DW_AT_ranges attribute is the offset in the
.debug_ranges section. */
- if (!dwarf2_ranges_read (DW_UNSND (attr), &low, &high, cu, NULL))
+ if (!dwarf2_ranges_read (DW_UNSND (attr), &low, &high, cu, pst))
return 0;
/* Found discontinuous range of addresses. */
ret = -1;
CORE_ADDR low, high;
struct die_info *child = die->child;
- if (dwarf2_get_pc_bounds (die, &low, &high, cu))
+ if (dwarf2_get_pc_bounds (die, &low, &high, cu, NULL))
{
*lowpc = min (*lowpc, low);
*highpc = max (*highpc, high);
subprograms or lexical blocks), we're done. */
if (cu->language != language_ada)
return;
-
+
/* Check all the children of the given DIE. If it contains nested
subprograms, then check their pc bounds. Likewise, we need to
check lexical blocks as well, as they may also contain subprogram
CORE_ADDR best_high = (CORE_ADDR) 0;
CORE_ADDR current_low, current_high;
- if (dwarf2_get_pc_bounds (die, ¤t_low, ¤t_high, cu))
+ if (dwarf2_get_pc_bounds (die, ¤t_low, ¤t_high, cu, NULL))
{
best_low = current_low;
best_high = current_high;
dwarf2_get_subprogram_pc_bounds (child, &best_low, &best_high, cu);
break;
case DW_TAG_namespace:
+ case DW_TAG_module:
/* FIXME: carlton/2004-01-16: Should we do this for
DW_TAG_class_type/DW_TAG_structure_type, too? I think
that current GCC's always emit the DIEs corresponding
if (attr)
{
CORE_ADDR high = DW_ADDR (attr);
+
attr = dwarf2_attr (die, DW_AT_low_pc, cu);
if (attr)
{
CORE_ADDR low = DW_ADDR (attr);
+
record_block_range (block, baseaddr + low, baseaddr + high - 1);
}
}
CORE_ADDR base = cu->base_address;
int base_known = cu->base_known;
+ gdb_assert (dwarf2_per_objfile->ranges.readin);
if (offset >= dwarf2_per_objfile->ranges.size)
{
complaint (&symfile_complaints,
return;
}
- record_block_range (block,
- baseaddr + base + start,
+ record_block_range (block,
+ baseaddr + base + start,
baseaddr + base + end - 1);
}
}
static void
dwarf2_add_field (struct field_info *fip, struct die_info *die,
struct dwarf2_cu *cu)
-{
+{
struct objfile *objfile = cu->objfile;
struct gdbarch *gdbarch = get_objfile_arch (objfile);
struct nextfield *new_field;
new_field = (struct nextfield *) xmalloc (sizeof (struct nextfield));
make_cleanup (xfree, new_field);
memset (new_field, 0, sizeof (struct nextfield));
- new_field->next = fip->fields;
- fip->fields = new_field;
+
+ if (die->tag == DW_TAG_inheritance)
+ {
+ new_field->next = fip->baseclasses;
+ fip->baseclasses = new_field;
+ }
+ else
+ {
+ new_field->next = fip->fields;
+ fip->fields = new_field;
+ }
fip->nfields++;
/* Handle accessibility and virtuality of field.
fp = &new_field->field;
+ /* NOTE: According to the dwarf standard, static data members are
+ indicated by having DW_AT_external.
+ The check here for ! die_is_declaration is historical.
+ This test is replicated in new_symbol. */
+
if (die->tag == DW_TAG_member && ! die_is_declaration (die, cu))
{
/* Data member other than a C++ static data member. */
-
+
/* Get type of field. */
fp->type = die_type (die, cu);
attr = dwarf2_attr (die, DW_AT_data_member_location, cu);
if (attr)
{
- int byte_offset;
+ int byte_offset = 0;
if (attr_form_is_section_offset (attr))
- {
- dwarf2_complex_location_expr_complaint ();
- byte_offset = 0;
- }
+ dwarf2_complex_location_expr_complaint ();
else if (attr_form_is_constant (attr))
byte_offset = dwarf2_get_attr_constant_value (attr, 0);
- else
+ else if (attr_form_is_block (attr))
byte_offset = decode_locdesc (DW_BLOCK (attr), cu);
+ else
+ dwarf2_complex_location_expr_complaint ();
SET_FIELD_BITPOS (*fp, byte_offset * bits_per_byte);
}
pointer or virtual base class pointer) to private. */
if (dwarf2_attr (die, DW_AT_artificial, cu))
{
+ FIELD_ARTIFICIAL (*fp) = 1;
new_field->accessibility = DW_ACCESS_private;
fip->non_public_fields = 1;
}
is a declaration, but all versions of G++ as of this writing
(so through at least 3.2.1) incorrectly generate
DW_TAG_variable tags. */
-
+
char *physname;
/* Get name of field. */
if (fieldname == NULL)
return;
+ attr = dwarf2_attr (die, DW_AT_const_value, cu);
+ if (attr)
+ {
+ /* A static const member, not much different than an enum as far as
+ we're concerned, except that we can support more types. */
+ new_symbol (die, NULL, cu);
+ }
+
/* Get physical name. */
- physname = dwarf2_linkage_name (die, cu);
+ physname = (char *) dwarf2_physname (fieldname, die, cu);
/* The name is already allocated along with this objfile, so we don't
need to duplicate it for the type. */
/* C++ base class field. */
attr = dwarf2_attr (die, DW_AT_data_member_location, cu);
if (attr)
- SET_FIELD_BITPOS (*fp, decode_locdesc (DW_BLOCK (attr), cu)
- * bits_per_byte);
+ {
+ int byte_offset = 0;
+
+ if (attr_form_is_section_offset (attr))
+ dwarf2_complex_location_expr_complaint ();
+ else if (attr_form_is_constant (attr))
+ byte_offset = dwarf2_get_attr_constant_value (attr, 0);
+ else if (attr_form_is_block (attr))
+ byte_offset = decode_locdesc (DW_BLOCK (attr), cu);
+ else
+ dwarf2_complex_location_expr_complaint ();
+
+ SET_FIELD_BITPOS (*fp, byte_offset * bits_per_byte);
+ }
FIELD_BITSIZE (*fp) = 0;
FIELD_TYPE (*fp) = die_type (die, cu);
FIELD_NAME (*fp) = type_name_no_tag (fp->type);
}
}
+/* Add a typedef defined in the scope of the FIP's class. */
+
+static void
+dwarf2_add_typedef (struct field_info *fip, struct die_info *die,
+ struct dwarf2_cu *cu)
+{
+ struct objfile *objfile = cu->objfile;
+ struct gdbarch *gdbarch = get_objfile_arch (objfile);
+ struct typedef_field_list *new_field;
+ struct attribute *attr;
+ struct typedef_field *fp;
+ char *fieldname = "";
+
+ /* Allocate a new field list entry and link it in. */
+ new_field = xzalloc (sizeof (*new_field));
+ make_cleanup (xfree, new_field);
+
+ gdb_assert (die->tag == DW_TAG_typedef);
+
+ fp = &new_field->field;
+
+ /* Get name of field. */
+ fp->name = dwarf2_name (die, cu);
+ if (fp->name == NULL)
+ return;
+
+ fp->type = read_type_die (die, cu);
+
+ new_field->next = fip->typedef_field_list;
+ fip->typedef_field_list = new_field;
+ fip->typedef_field_list_count++;
+}
+
/* Create the vector of fields, and attach it to the type. */
static void
TYPE_ALLOC (type, sizeof (struct field) * nfields);
memset (TYPE_FIELDS (type), 0, sizeof (struct field) * nfields);
- if (fip->non_public_fields)
+ if (fip->non_public_fields && cu->language != language_ada)
{
ALLOCATE_CPLUS_STRUCT_TYPE (type);
/* If the type has baseclasses, allocate and clear a bit vector for
TYPE_FIELD_VIRTUAL_BITS. */
- if (fip->nbaseclasses)
+ if (fip->nbaseclasses && cu->language != language_ada)
{
int num_bytes = B_BYTES (fip->nbaseclasses);
unsigned char *pointer;
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)
+ struct nextfield *fieldp;
+
+ if (fip->fields)
+ {
+ fieldp = fip->fields;
+ fip->fields = fieldp->next;
+ }
+ else
+ {
+ fieldp = fip->baseclasses;
+ fip->baseclasses = fieldp->next;
+ }
+
+ TYPE_FIELD (type, nfields) = fieldp->field;
+ switch (fieldp->accessibility)
{
case DW_ACCESS_private:
- SET_TYPE_FIELD_PRIVATE (type, nfields);
+ if (cu->language != language_ada)
+ SET_TYPE_FIELD_PRIVATE (type, nfields);
break;
case DW_ACCESS_protected:
- SET_TYPE_FIELD_PROTECTED (type, nfields);
+ if (cu->language != language_ada)
+ SET_TYPE_FIELD_PROTECTED (type, nfields);
break;
case DW_ACCESS_public:
/* Unknown accessibility. Complain and treat it as public. */
{
complaint (&symfile_complaints, _("unsupported accessibility %d"),
- fip->fields->accessibility);
+ fieldp->accessibility);
}
break;
}
if (nfields < fip->nbaseclasses)
{
- switch (fip->fields->virtuality)
+ switch (fieldp->virtuality)
{
case DW_VIRTUALITY_virtual:
case DW_VIRTUALITY_pure_virtual:
+ if (cu->language == language_ada)
+ error ("unexpected virtuality in component of Ada type");
SET_TYPE_FIELD_VIRTUAL (type, nfields);
break;
}
}
- fip->fields = fip->fields->next;
}
}
struct nextfnfield *new_fnfield;
struct type *this_type;
+ if (cu->language == language_ada)
+ error ("unexpected member function in Ada type");
+
/* Get name of member function. */
fieldname = dwarf2_name (die, cu);
if (fieldname == NULL)
return;
/* Get the mangled name. */
- physname = dwarf2_linkage_name (die, cu);
+ physname = (char *) dwarf2_physname (fieldname, die, cu);
/* Look up member function name in fieldlist. */
for (i = 0; i < fip->nfnfields; i++)
if (attr && DW_UNSND (attr) != 0)
fnp->is_artificial = 1;
- /* Get index in virtual function table if it is a virtual member function. */
+ /* Get index in virtual function table if it is a virtual member
+ function. For older versions of GCC, this is an offset in the
+ appropriate virtual table, as specified by DW_AT_containing_type.
+ For everyone else, it is an expression to be evaluated relative
+ to the object address. */
+
attr = dwarf2_attr (die, DW_AT_vtable_elem_location, cu);
if (attr)
{
- /* Support the .debug_loc offsets */
- if (attr_form_is_block (attr))
+ if (attr_form_is_block (attr) && DW_BLOCK (attr)->size > 0)
{
- fnp->voffset = decode_locdesc (DW_BLOCK (attr), cu) + 2;
- }
+ if (DW_BLOCK (attr)->data[0] == DW_OP_constu)
+ {
+ /* Old-style GCC. */
+ fnp->voffset = decode_locdesc (DW_BLOCK (attr), cu) + 2;
+ }
+ else if (DW_BLOCK (attr)->data[0] == DW_OP_deref
+ || (DW_BLOCK (attr)->size > 1
+ && DW_BLOCK (attr)->data[0] == DW_OP_deref_size
+ && DW_BLOCK (attr)->data[1] == cu->header.addr_size))
+ {
+ struct dwarf_block blk;
+ int offset;
+
+ offset = (DW_BLOCK (attr)->data[0] == DW_OP_deref
+ ? 1 : 2);
+ blk.size = DW_BLOCK (attr)->size - offset;
+ blk.data = DW_BLOCK (attr)->data + offset;
+ fnp->voffset = decode_locdesc (DW_BLOCK (attr), cu);
+ if ((fnp->voffset % cu->header.addr_size) != 0)
+ dwarf2_complex_location_expr_complaint ();
+ else
+ fnp->voffset /= cu->header.addr_size;
+ fnp->voffset += 2;
+ }
+ else
+ dwarf2_complex_location_expr_complaint ();
+
+ if (!fnp->fcontext)
+ fnp->fcontext = TYPE_TARGET_TYPE (TYPE_FIELD_TYPE (this_type, 0));
+ }
else if (attr_form_is_section_offset (attr))
{
dwarf2_complex_location_expr_complaint ();
dwarf2_invalid_attrib_class_complaint ("DW_AT_vtable_elem_location",
fieldname);
}
- }
+ }
+ else
+ {
+ attr = dwarf2_attr (die, DW_AT_virtuality, cu);
+ if (attr && DW_UNSND (attr))
+ {
+ /* GCC does this, as of 2008-08-25; PR debug/37237. */
+ complaint (&symfile_complaints,
+ _("Member function \"%s\" (offset %d) is virtual but the vtable offset is not specified"),
+ fieldname, die->offset);
+ ALLOCATE_CPLUS_STRUCT_TYPE (type);
+ TYPE_CPLUS_DYNAMIC (type) = 1;
+ }
+ }
}
/* Create the vector of member function fields, and attach it to the type. */
int total_length = 0;
int i;
+ if (cu->language == language_ada)
+ error ("unexpected member functions in Ada type");
+
ALLOCATE_CPLUS_STRUCT_TYPE (type);
TYPE_FN_FIELDLISTS (type) = (struct fn_fieldlist *)
TYPE_ALLOC (type, sizeof (struct fn_fieldlist) * fip->nfnfields);
}
/* GCC outputs unnamed structures that are really pointers to member
- functions, with the ABI-specified layout. If DIE (from CU) describes
- such a structure, set its type, and return nonzero. Otherwise return
- zero.
+ functions, with the ABI-specified layout. If TYPE describes
+ such a structure, smash it into a member function type.
GCC shouldn't do this; it should just output pointer to member DIEs.
This is GCC PR debug/28767. */
-static struct type *
-quirk_gcc_member_function_pointer (struct die_info *die, struct dwarf2_cu *cu)
+static void
+quirk_gcc_member_function_pointer (struct type *type, struct objfile *objfile)
{
- struct objfile *objfile = cu->objfile;
- struct type *type;
- struct die_info *pfn_die, *delta_die;
- struct attribute *pfn_name, *delta_name;
- struct type *pfn_type, *domain_type;
+ struct type *pfn_type, *domain_type, *new_type;
/* Check for a structure with no name and two children. */
- if (die->tag != DW_TAG_structure_type
- || dwarf2_attr (die, DW_AT_name, cu) != NULL
- || die->child == NULL
- || die->child->sibling == NULL
- || (die->child->sibling->sibling != NULL
- && die->child->sibling->sibling->tag != DW_TAG_padding))
- return NULL;
+ if (TYPE_CODE (type) != TYPE_CODE_STRUCT || TYPE_NFIELDS (type) != 2)
+ return;
/* Check for __pfn and __delta members. */
- pfn_die = die->child;
- pfn_name = dwarf2_attr (pfn_die, DW_AT_name, cu);
- if (pfn_die->tag != DW_TAG_member
- || pfn_name == NULL
- || DW_STRING (pfn_name) == NULL
- || strcmp ("__pfn", DW_STRING (pfn_name)) != 0)
- return NULL;
-
- delta_die = pfn_die->sibling;
- delta_name = dwarf2_attr (delta_die, DW_AT_name, cu);
- if (delta_die->tag != DW_TAG_member
- || delta_name == NULL
- || DW_STRING (delta_name) == NULL
- || strcmp ("__delta", DW_STRING (delta_name)) != 0)
- return NULL;
+ if (TYPE_FIELD_NAME (type, 0) == NULL
+ || strcmp (TYPE_FIELD_NAME (type, 0), "__pfn") != 0
+ || TYPE_FIELD_NAME (type, 1) == NULL
+ || strcmp (TYPE_FIELD_NAME (type, 1), "__delta") != 0)
+ return;
/* Find the type of the method. */
- pfn_type = die_type (pfn_die, cu);
+ pfn_type = TYPE_FIELD_TYPE (type, 0);
if (pfn_type == NULL
|| TYPE_CODE (pfn_type) != TYPE_CODE_PTR
|| TYPE_CODE (TYPE_TARGET_TYPE (pfn_type)) != TYPE_CODE_FUNC)
- return NULL;
+ return;
/* Look for the "this" argument. */
pfn_type = TYPE_TARGET_TYPE (pfn_type);
if (TYPE_NFIELDS (pfn_type) == 0
+ /* || TYPE_FIELD_TYPE (pfn_type, 0) == NULL */
|| TYPE_CODE (TYPE_FIELD_TYPE (pfn_type, 0)) != TYPE_CODE_PTR)
- return NULL;
+ return;
domain_type = TYPE_TARGET_TYPE (TYPE_FIELD_TYPE (pfn_type, 0));
- type = alloc_type (objfile);
- smash_to_method_type (type, domain_type, TYPE_TARGET_TYPE (pfn_type),
+ new_type = alloc_type (objfile);
+ smash_to_method_type (new_type, domain_type, TYPE_TARGET_TYPE (pfn_type),
TYPE_FIELDS (pfn_type), TYPE_NFIELDS (pfn_type),
TYPE_VARARGS (pfn_type));
- type = lookup_methodptr_type (type);
- return set_die_type (die, type, cu);
+ smash_to_methodptr_type (type, new_type);
}
/* Called when we find the DIE that starts a structure or union scope
struct type *type;
struct attribute *attr;
char *name;
- struct cleanup *back_to = make_cleanup (null_cleanup, 0);
+ struct cleanup *back_to;
- type = quirk_gcc_member_function_pointer (die, cu);
- if (type)
- return type;
+ /* If the definition of this type lives in .debug_types, read that type.
+ Don't follow DW_AT_specification though, that will take us back up
+ the chain and we want to go down. */
+ attr = dwarf2_attr_no_follow (die, DW_AT_signature, cu);
+ if (attr)
+ {
+ struct dwarf2_cu *type_cu = cu;
+ struct die_info *type_die = follow_die_ref_or_sig (die, attr, &type_cu);
+
+ /* We could just recurse on read_structure_type, but we need to call
+ get_die_type to ensure only one type for this DIE is created.
+ This is important, for example, because for c++ classes we need
+ TYPE_NAME set which is only done by new_symbol. Blech. */
+ type = read_type_die (type_die, type_cu);
+ return set_die_type (die, type, cu);
+ }
+
+ back_to = make_cleanup (null_cleanup, 0);
type = alloc_type (objfile);
INIT_CPLUS_SPECIFIC (type);
+
name = dwarf2_name (die, cu);
if (name != NULL)
{
if (cu->language == language_cplus
|| cu->language == language_java)
{
- const char *new_prefix = determine_class_name (die, cu);
- TYPE_TAG_NAME (type) = (char *) new_prefix;
+ TYPE_TAG_NAME (type) = (char *) dwarf2_full_name (name, die, cu);
+ if (die->tag == DW_TAG_structure_type
+ || die->tag == DW_TAG_class_type)
+ TYPE_NAME (type) = TYPE_TAG_NAME (type);
}
else
{
/* The name is already allocated along with this objfile, so
we don't need to duplicate it for the type. */
- TYPE_TAG_NAME (type) = name;
+ TYPE_TAG_NAME (type) = (char *) name;
+ if (die->tag == DW_TAG_class_type)
+ TYPE_NAME (type) = TYPE_TAG_NAME (type);
}
}
}
else
{
- /* FIXME: TYPE_CODE_CLASS is currently defined to TYPE_CODE_STRUCT
- in gdbtypes.h. */
TYPE_CODE (type) = TYPE_CODE_CLASS;
}
+ if (cu->language == language_cplus && die->tag == DW_TAG_class_type)
+ TYPE_DECLARED_CLASS (type) = 1;
+
attr = dwarf2_attr (die, DW_AT_byte_size, cu);
if (attr)
{
TYPE_STUB_SUPPORTED (type) = 1;
if (die_is_declaration (die, cu))
TYPE_STUB (type) = 1;
+ else if (attr == NULL && die->child == NULL
+ && producer_is_realview (cu->producer))
+ /* RealView does not output the required DW_AT_declaration
+ on incomplete types. */
+ TYPE_STUB (type) = 1;
/* 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. */
set_die_type (die, type, cu);
+ /* set_die_type should be already done. */
+ set_descriptive_type (type, die, cu);
+
if (die->child != NULL && ! die_is_declaration (die, cu))
{
struct field_info fi;
/* C++ base class field. */
dwarf2_add_field (&fi, child_die, cu);
}
+ else if (child_die->tag == DW_TAG_typedef)
+ dwarf2_add_typedef (&fi, child_die, cu);
child_die = sibling_die (child_die);
}
/* 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. */
+ class from the DW_AT_containing_type attribute. This use of
+ DW_AT_containing_type is a GNU extension. */
if (dwarf2_attr (die, DW_AT_containing_type, cu) != NULL)
{
}
}
}
+
+ /* Copy fi.typedef_field_list linked list elements content into the
+ allocated array TYPE_TYPEDEF_FIELD_ARRAY (type). */
+ if (fi.typedef_field_list)
+ {
+ int i = fi.typedef_field_list_count;
+
+ ALLOCATE_CPLUS_STRUCT_TYPE (type);
+ TYPE_TYPEDEF_FIELD_ARRAY (type)
+ = TYPE_ALLOC (type, sizeof (TYPE_TYPEDEF_FIELD (type, 0)) * i);
+ TYPE_TYPEDEF_FIELD_COUNT (type) = i;
+
+ /* Reverse the list order to keep the debug info elements order. */
+ while (--i >= 0)
+ {
+ struct typedef_field *dest, *src;
+
+ dest = &TYPE_TYPEDEF_FIELD (type, i);
+ src = &fi.typedef_field_list->field;
+ fi.typedef_field_list = fi.typedef_field_list->next;
+ *dest = *src;
+ }
+ }
}
+ quirk_gcc_member_function_pointer (type, cu->objfile);
+
do_cleanups (back_to);
return type;
}
static void
process_structure_scope (struct die_info *die, struct dwarf2_cu *cu)
{
- struct objfile *objfile = cu->objfile;
struct die_info *child_die = die->child;
struct type *this_type;
struct attribute *attr;
const char *name;
+ /* If the definition of this type lives in .debug_types, read that type.
+ Don't follow DW_AT_specification though, that will take us back up
+ the chain and we want to go down. */
+ attr = dwarf2_attr_no_follow (die, DW_AT_signature, cu);
+ if (attr)
+ {
+ struct dwarf2_cu *type_cu = cu;
+ struct die_info *type_die = follow_die_ref_or_sig (die, attr, &type_cu);
+
+ type = read_type_die (type_die, type_cu);
+ return set_die_type (die, type, cu);
+ }
+
type = alloc_type (objfile);
TYPE_CODE (type) = TYPE_CODE_ENUM;
- name = dwarf2_full_name (die, cu);
+ name = dwarf2_full_name (NULL, die, cu);
if (name != NULL)
TYPE_TAG_NAME (type) = (char *) name;
return set_die_type (die, type, cu);
}
-/* Determine the name of the type represented by DIE, which should be
- a named C++ or Java compound type. Return the name in question,
- allocated on the objfile obstack. */
-
-static const char *
-determine_class_name (struct die_info *die, struct dwarf2_cu *cu)
-{
- const char *new_prefix = NULL;
-
- /* If we don't have namespace debug info, guess the name by trying
- to demangle the names of members, just like we did in
- guess_structure_name. */
- if (!processing_has_namespace_info)
- {
- struct die_info *child;
-
- for (child = die->child;
- child != NULL && child->tag != 0;
- child = sibling_die (child))
- {
- if (child->tag == DW_TAG_subprogram)
- {
- char *phys_prefix
- = language_class_name_from_physname (cu->language_defn,
- dwarf2_linkage_name
- (child, cu));
-
- if (phys_prefix != NULL)
- {
- new_prefix
- = obsavestring (phys_prefix, strlen (phys_prefix),
- &cu->objfile->objfile_obstack);
- xfree (phys_prefix);
- break;
- }
- }
- }
- }
-
- if (new_prefix == NULL)
- new_prefix = dwarf2_full_name (die, cu);
-
- return new_prefix;
-}
-
/* Given a pointer to a die which begins an enumeration, process all
the dies that define the members of the enumeration, and create the
symbol for the enumeration type.
static void
process_enumeration_scope (struct die_info *die, struct dwarf2_cu *cu)
{
- struct objfile *objfile = cu->objfile;
struct die_info *child_die;
struct field *fields;
struct symbol *sym;
{
struct objfile *objfile = cu->objfile;
struct die_info *child_die;
- struct type *type = NULL;
+ struct type *type;
struct type *element_type, *range_type, *index_type;
struct type **range_types = NULL;
struct attribute *attr;
element_type = die_type (die, cu);
+ /* The die_type call above may have already set the type for this DIE. */
+ type = get_die_type (die, cu);
+ if (type)
+ return type;
+
/* Irix 6.2 native cc creates array types without children for
arrays with unspecified length. */
if (die->child == NULL)
{
- index_type = builtin_type_int32;
+ index_type = objfile_type (objfile)->builtin_int;
range_type = create_range_type (NULL, index_type, 0, -1);
type = create_array_type (NULL, element_type, range_type);
return set_die_type (die, type, cu);
if (child_die->tag == DW_TAG_subrange_type)
{
struct type *child_type = read_type_die (child_die, cu);
+
if (child_type != NULL)
{
/* The range type was succesfully read. Save it for
if (read_array_order (die, cu) == DW_ORD_col_major)
{
int i = 0;
+
while (i < ndim)
type = create_array_type (NULL, type, range_types[i++]);
}
name = dwarf2_name (die, cu);
if (name)
TYPE_NAME (type) = name;
-
- do_cleanups (back_to);
/* Install the type in the die. */
- return set_die_type (die, type, cu);
+ set_die_type (die, type, cu);
+
+ /* set_die_type should be already done. */
+ set_descriptive_type (type, die, cu);
+
+ do_cleanups (back_to);
+
+ return type;
}
static enum dwarf_array_dim_ordering
-read_array_order (struct die_info *die, struct dwarf2_cu *cu)
+read_array_order (struct die_info *die, struct dwarf2_cu *cu)
{
struct attribute *attr;
/*
GNU F77 is a special case, as at 08/2004 array type info is the
- opposite order to the dwarf2 specification, but data is still
+ opposite order to the dwarf2 specification, but data is still
laid out as per normal fortran.
- FIXME: dsl/2004-8-20: If G77 is ever fixed, this will also need
+ FIXME: dsl/2004-8-20: If G77 is ever fixed, this will also need
version checking.
*/
- if (cu->language == language_fortran &&
- cu->producer && strstr (cu->producer, "GNU F77"))
+ if (cu->language == language_fortran
+ && cu->producer && strstr (cu->producer, "GNU F77"))
{
return DW_ORD_row_major;
}
- switch (cu->language_defn->la_array_ordering)
+ switch (cu->language_defn->la_array_ordering)
{
case array_column_major:
return DW_ORD_col_major;
static struct type *
read_set_type (struct die_info *die, struct dwarf2_cu *cu)
{
- struct type *set_type = create_set_type (NULL, die_type (die, cu));
+ struct type *domain_type, *set_type;
+ struct attribute *attr;
+
+ domain_type = die_type (die, cu);
+
+ /* The die_type call above may have already set the type for this DIE. */
+ set_type = get_die_type (die, cu);
+ if (set_type)
+ return set_type;
+
+ set_type = create_set_type (NULL, domain_type);
+
+ attr = dwarf2_attr (die, DW_AT_byte_size, cu);
+ if (attr)
+ TYPE_LENGTH (set_type) = DW_UNSND (attr);
return set_die_type (die, set_type, cu);
}
attr = dwarf2_attr (child_die, DW_AT_data_member_location, cu);
if (attr)
{
- SYMBOL_VALUE_ADDRESS (sym) =
- base + decode_locdesc (DW_BLOCK (attr), cu);
+ CORE_ADDR byte_offset = 0;
+
+ if (attr_form_is_section_offset (attr))
+ dwarf2_complex_location_expr_complaint ();
+ else if (attr_form_is_constant (attr))
+ byte_offset = dwarf2_get_attr_constant_value (attr, 0);
+ else if (attr_form_is_block (attr))
+ byte_offset = decode_locdesc (DW_BLOCK (attr), cu);
+ else
+ dwarf2_complex_location_expr_complaint ();
+
+ SYMBOL_VALUE_ADDRESS (sym) = base + byte_offset;
add_symbol_to_list (sym, &global_symbols);
}
child_die = sibling_die (child_die);
{
struct die_info *ext_die;
struct dwarf2_cu *ext_cu = cu;
+
ext_die = dwarf2_extension (die, &ext_cu);
type = read_type_die (ext_die, ext_cu);
return set_die_type (die, type, cu);
previous_prefix = determine_prefix (die, cu);
if (previous_prefix[0] != '\0')
name = typename_concat (&objfile->objfile_obstack,
- previous_prefix, name, cu);
+ previous_prefix, name, 0, cu);
/* Create the type. */
type = init_type (TYPE_CODE_NAMESPACE, 0, 0, NULL,
TYPE_NAME (type) = (char *) name;
TYPE_TAG_NAME (type) = TYPE_NAME (type);
- set_die_type (die, type, cu);
-
- return type;
+ return set_die_type (die, type, cu);
}
/* Read a C++ namespace. */
if (is_anonymous)
{
const char *previous_prefix = determine_prefix (die, cu);
- cp_add_using_directive (TYPE_NAME (type),
- strlen (previous_prefix),
- strlen (TYPE_NAME (type)));
+
+ cp_add_using_directive (previous_prefix, TYPE_NAME (type), NULL,
+ NULL, &objfile->objfile_obstack);
}
}
if (die->child != NULL)
{
struct die_info *child_die = die->child;
-
+
while (child_die && child_die->tag)
{
process_die (child_die, cu);
}
}
+/* Read a Fortran module as type. This DIE can be only a declaration used for
+ imported module. Still we need that type as local Fortran "use ... only"
+ declaration imports depend on the created type in determine_prefix. */
+
+static struct type *
+read_module_type (struct die_info *die, struct dwarf2_cu *cu)
+{
+ struct objfile *objfile = cu->objfile;
+ char *module_name;
+ struct type *type;
+
+ module_name = dwarf2_name (die, cu);
+ if (!module_name)
+ complaint (&symfile_complaints, _("DW_TAG_module has no name, offset 0x%x"),
+ die->offset);
+ type = init_type (TYPE_CODE_MODULE, 0, 0, module_name, objfile);
+
+ /* determine_prefix uses TYPE_TAG_NAME. */
+ TYPE_TAG_NAME (type) = TYPE_NAME (type);
+
+ return set_die_type (die, type, cu);
+}
+
/* Read a Fortran module. */
static void
{
struct die_info *child_die = die->child;
- /* FIXME: Support the separate Fortran module namespaces. */
-
while (child_die && child_die->tag)
{
process_die (child_die, cu);
struct attribute *attr_byte_size;
struct attribute *attr_address_class;
int byte_size, addr_class;
+ struct type *target_type;
+
+ target_type = die_type (die, cu);
+
+ /* The die_type call above may have already set the type for this DIE. */
+ type = get_die_type (die, cu);
+ if (type)
+ return type;
- type = lookup_pointer_type (die_type (die, cu));
+ type = lookup_pointer_type (target_type);
attr_byte_size = dwarf2_attr (die, DW_AT_byte_size, cu);
if (attr_byte_size)
{
complaint (&symfile_complaints, _("invalid pointer size %d"), byte_size);
}
- else {
- /* Should we also complain about unhandled address classes? */
- }
+ else
+ {
+ /* Should we also complain about unhandled address classes? */
+ }
}
TYPE_LENGTH (type) = byte_size;
static struct type *
read_tag_ptr_to_member_type (struct die_info *die, struct dwarf2_cu *cu)
{
- struct objfile *objfile = cu->objfile;
struct type *type;
struct type *to_type;
struct type *domain;
to_type = die_type (die, cu);
domain = die_containing_type (die, cu);
+ /* The calls above may have already set the type for this DIE. */
+ type = get_die_type (die, cu);
+ if (type)
+ return type;
+
if (TYPE_CODE (check_typedef (to_type)) == TYPE_CODE_METHOD)
type = lookup_methodptr_type (to_type);
else
read_tag_reference_type (struct die_info *die, struct dwarf2_cu *cu)
{
struct comp_unit_head *cu_header = &cu->header;
- struct type *type;
+ struct type *type, *target_type;
struct attribute *attr;
- type = lookup_reference_type (die_type (die, cu));
+ target_type = die_type (die, cu);
+
+ /* The die_type call above may have already set the type for this DIE. */
+ type = get_die_type (die, cu);
+ if (type)
+ return type;
+
+ type = lookup_reference_type (target_type);
attr = dwarf2_attr (die, DW_AT_byte_size, cu);
if (attr)
{
struct type *base_type, *cv_type;
base_type = die_type (die, cu);
+
+ /* The die_type call above may have already set the type for this DIE. */
+ cv_type = get_die_type (die, cu);
+ if (cv_type)
+ return cv_type;
+
cv_type = make_cv_type (1, TYPE_VOLATILE (base_type), base_type, 0);
return set_die_type (die, cv_type, cu);
}
struct type *base_type, *cv_type;
base_type = die_type (die, cu);
+
+ /* The die_type call above may have already set the type for this DIE. */
+ cv_type = get_die_type (die, cu);
+ if (cv_type)
+ return cv_type;
+
cv_type = make_cv_type (TYPE_CONST (base_type), 1, base_type, 0);
return set_die_type (die, cv_type, cu);
}
}
}
- index_type = builtin_type_int32;
+ index_type = objfile_type (objfile)->builtin_int;
range_type = create_range_type (NULL, index_type, 1, length);
char_type = language_string_char_type (cu->language_defn, gdbarch);
type = create_string_type (NULL, char_type, range_type);
struct attribute *attr;
type = die_type (die, cu);
- ftype = make_function_type (type, (struct type **) 0, cu->objfile);
+
+ /* The die_type call above may have already set the type for this DIE. */
+ ftype = get_die_type (die, cu);
+ if (ftype)
+ return ftype;
+
+ ftype = lookup_function_type (type);
/* All functions in C++, Pascal and Java have prototypes. */
attr = dwarf2_attr (die, DW_AT_prototyped, cu);
|| cu->language == language_java
|| cu->language == language_pascal)
TYPE_PROTOTYPED (ftype) = 1;
+ else if (producer_is_realview (cu->producer))
+ /* RealView does not emit DW_AT_prototyped. We can not
+ distinguish prototyped and unprototyped functions; default to
+ prototyped, since that is more common in modern code (and
+ RealView warns about unprototyped functions). */
+ TYPE_PROTOTYPED (ftype) = 1;
/* Store the calling convention in the type if it's available in
the subroutine die. Otherwise set the calling convention to
the default value DW_CC_normal. */
attr = dwarf2_attr (die, DW_AT_calling_convention, cu);
TYPE_CALLING_CONVENTION (ftype) = attr ? DW_UNSND (attr) : DW_CC_normal;
-
+
+ /* We need to add the subroutine type to the die immediately so
+ we don't infinitely recurse when dealing with parameters
+ declared as the same subroutine type. */
+ set_die_type (die, ftype, cu);
+
if (die->child != NULL)
{
+ struct type *void_type = objfile_type (cu->objfile)->builtin_void;
struct die_info *child_die;
- int nparams = 0;
- int iparams = 0;
+ int nparams, iparams;
/* Count the number of parameters.
FIXME: GDB currently ignores vararg functions, but knows about
vararg member functions. */
+ nparams = 0;
child_die = die->child;
while (child_die && child_die->tag)
{
TYPE_FIELDS (ftype) = (struct field *)
TYPE_ZALLOC (ftype, nparams * sizeof (struct field));
+ /* TYPE_FIELD_TYPE must never be NULL. Pre-fill the array to ensure it
+ even if we error out during the parameters reading below. */
+ for (iparams = 0; iparams < nparams; iparams++)
+ TYPE_FIELD_TYPE (ftype, iparams) = void_type;
+
+ iparams = 0;
child_die = die->child;
while (child_die && child_die->tag)
{
if (attr)
TYPE_FIELD_ARTIFICIAL (ftype, iparams) = DW_UNSND (attr);
else
- TYPE_FIELD_ARTIFICIAL (ftype, iparams) = 0;
+ {
+ TYPE_FIELD_ARTIFICIAL (ftype, iparams) = 0;
+
+ /* GCC/43521: In java, the formal parameter
+ "this" is sometimes not marked with DW_AT_artificial. */
+ if (cu->language == language_java)
+ {
+ const char *name = dwarf2_name (child_die, cu);
+
+ if (name && !strcmp (name, "this"))
+ TYPE_FIELD_ARTIFICIAL (ftype, iparams) = 1;
+ }
+ }
TYPE_FIELD_TYPE (ftype, iparams) = die_type (child_die, cu);
iparams++;
}
}
}
- return set_die_type (die, ftype, cu);
+ return ftype;
}
static struct type *
read_typedef (struct die_info *die, struct dwarf2_cu *cu)
{
struct objfile *objfile = cu->objfile;
- struct attribute *attr;
const char *name = NULL;
struct type *this_type;
- name = dwarf2_full_name (die, cu);
+ name = dwarf2_full_name (NULL, die, cu);
this_type = init_type (TYPE_CODE_TYPEDEF, 0,
TYPE_FLAG_TARGET_STUB, NULL, objfile);
TYPE_NAME (this_type) = (char *) name;
type_flags |= TYPE_FLAG_UNSIGNED;
break;
case DW_ATE_signed_char:
- if (cu->language == language_ada || cu->language == language_m2
+ if (cu->language == language_ada || cu->language == language_m2
|| cu->language == language_pascal)
code = TYPE_CODE_CHAR;
break;
code = TYPE_CODE_CHAR;
type_flags |= TYPE_FLAG_UNSIGNED;
break;
+ case DW_ATE_UTF:
+ /* We just treat this as an integer and then recognize the
+ type by name elsewhere. */
+ break;
+
default:
complaint (&symfile_complaints, _("unsupported DW_AT_encoding: '%s'"),
dwarf_type_encoding_name (encoding));
struct type *base_type;
struct type *range_type;
struct attribute *attr;
- int low = 0;
- int high = -1;
+ LONGEST low = 0;
+ LONGEST high = -1;
char *name;
-
+ LONGEST negative_mask;
+
base_type = die_type (die, cu);
- if (TYPE_CODE (base_type) == TYPE_CODE_VOID)
- {
- complaint (&symfile_complaints,
- _("DW_AT_type missing from DW_TAG_subrange_type"));
- base_type
- = init_type (TYPE_CODE_INT, gdbarch_addr_bit (gdbarch) / 8,
- 0, NULL, cu->objfile);
- }
+
+ /* The die_type call above may have already set the type for this DIE. */
+ range_type = get_die_type (die, cu);
+ if (range_type)
+ return range_type;
if (cu->language == language_fortran)
- {
+ {
/* FORTRAN implies a lower bound of 1, if not given. */
low = 1;
}
attr = dwarf2_attr (die, DW_AT_upper_bound, cu);
if (attr)
- {
- if (attr->form == DW_FORM_block1)
+ {
+ if (attr->form == DW_FORM_block1 || is_ref_attr (attr))
{
/* GCC encodes arrays with unspecified or dynamic length
- with a DW_FORM_block1 attribute.
+ with a DW_FORM_block1 attribute or a reference attribute.
FIXME: GDB does not yet know how to handle dynamic
arrays properly, treat them as arrays with unspecified
length for now.
else
high = dwarf2_get_attr_constant_value (attr, 1);
}
+ else
+ {
+ attr = dwarf2_attr (die, DW_AT_count, cu);
+ if (attr)
+ {
+ int count = dwarf2_get_attr_constant_value (attr, 1);
+ high = low + count - 1;
+ }
+ }
+
+ /* Dwarf-2 specifications explicitly allows to create subrange types
+ without specifying a base type.
+ In that case, the base type must be set to the type of
+ the lower bound, upper bound or count, in that order, if any of these
+ three attributes references an object that has a type.
+ If no base type is found, the Dwarf-2 specifications say that
+ a signed integer type of size equal to the size of an address should
+ be used.
+ For the following C code: `extern char gdb_int [];'
+ GCC produces an empty range DIE.
+ FIXME: muller/2010-05-28: Possible references to object for low bound,
+ high bound or count are not yet handled by this code.
+ */
+ if (TYPE_CODE (base_type) == TYPE_CODE_VOID)
+ {
+ struct objfile *objfile = cu->objfile;
+ struct gdbarch *gdbarch = get_objfile_arch (objfile);
+ int addr_size = gdbarch_addr_bit (gdbarch) /8;
+ struct type *int_type = objfile_type (objfile)->builtin_int;
+
+ /* Test "int", "long int", and "long long int" objfile types,
+ and select the first one having a size above or equal to the
+ architecture address size. */
+ if (int_type && TYPE_LENGTH (int_type) >= addr_size)
+ base_type = int_type;
+ else
+ {
+ int_type = objfile_type (objfile)->builtin_long;
+ if (int_type && TYPE_LENGTH (int_type) >= addr_size)
+ base_type = int_type;
+ else
+ {
+ int_type = objfile_type (objfile)->builtin_long_long;
+ if (int_type && TYPE_LENGTH (int_type) >= addr_size)
+ base_type = int_type;
+ }
+ }
+ }
+
+ negative_mask =
+ (LONGEST) -1 << (TYPE_LENGTH (base_type) * TARGET_CHAR_BIT - 1);
+ if (!TYPE_UNSIGNED (base_type) && (low & negative_mask))
+ low |= negative_mask;
+ if (!TYPE_UNSIGNED (base_type) && (high & negative_mask))
+ high |= negative_mask;
range_type = create_range_type (NULL, base_type, low, high);
+ /* Mark arrays with dynamic length at least as an array of unspecified
+ length. GDB could check the boundary but before it gets implemented at
+ least allow accessing the array elements. */
+ if (attr && attr->form == DW_FORM_block1)
+ TYPE_HIGH_BOUND_UNDEFINED (range_type) = 1;
+
name = dwarf2_name (die, cu);
if (name)
TYPE_NAME (range_type) = name;
-
+
attr = dwarf2_attr (die, DW_AT_byte_size, cu);
if (attr)
TYPE_LENGTH (range_type) = DW_UNSND (attr);
- return set_die_type (die, range_type, cu);
+ set_die_type (die, range_type, cu);
+
+ /* set_die_type should be already done. */
+ set_descriptive_type (range_type, die, cu);
+
+ return range_type;
}
-
+
static struct type *
read_unspecified_type (struct die_info *die, struct dwarf2_cu *cu)
{
die_hash (const void *item)
{
const struct die_info *die = item;
+
return die->offset;
}
{
const struct die_info *die_lhs = item_lhs;
const struct die_info *die_rhs = item_rhs;
+
return die_lhs->offset == die_rhs->offset;
}
/* Read a whole compilation unit into a linked list of dies. */
static struct die_info *
-read_comp_unit (gdb_byte *info_ptr, bfd *abfd, struct dwarf2_cu *cu)
+read_comp_unit (gdb_byte *info_ptr, struct dwarf2_cu *cu)
{
+ struct die_reader_specs reader_specs;
+
+ gdb_assert (cu->die_hash == NULL);
cu->die_hash
= htab_create_alloc_ex (cu->header.length / 12,
die_hash,
hashtab_obstack_allocate,
dummy_obstack_deallocate);
- return read_die_and_children (info_ptr, abfd, cu, &info_ptr, NULL);
+ init_cu_die_reader (&reader_specs, cu);
+
+ return read_die_and_children (&reader_specs, info_ptr, &info_ptr, NULL);
}
/* Main entry point for reading a DIE and all children.
Read the DIE and dump it if requested. */
static struct die_info *
-read_die_and_children (gdb_byte *info_ptr, bfd *abfd,
- struct dwarf2_cu *cu,
+read_die_and_children (const struct die_reader_specs *reader,
+ gdb_byte *info_ptr,
gdb_byte **new_info_ptr,
struct die_info *parent)
{
- struct die_info *result = read_die_and_children_1 (info_ptr, abfd, cu,
+ struct die_info *result = read_die_and_children_1 (reader, info_ptr,
new_info_ptr, parent);
if (dwarf2_die_debug)
{
- fprintf_unfiltered (gdb_stdlog, "Read die from .debug_info:\n");
+ fprintf_unfiltered (gdb_stdlog,
+ "\nRead die from %s of %s:\n",
+ reader->buffer == dwarf2_per_objfile->info.buffer
+ ? ".debug_info"
+ : reader->buffer == dwarf2_per_objfile->types.buffer
+ ? ".debug_types"
+ : "unknown section",
+ reader->abfd->filename);
dump_die (result, dwarf2_die_debug);
}
is the parent of the die in question. */
static struct die_info *
-read_die_and_children_1 (gdb_byte *info_ptr, bfd *abfd,
- struct dwarf2_cu *cu,
+read_die_and_children_1 (const struct die_reader_specs *reader,
+ gdb_byte *info_ptr,
gdb_byte **new_info_ptr,
struct die_info *parent)
{
gdb_byte *cur_ptr;
int has_children;
- cur_ptr = read_full_die (&die, abfd, info_ptr, cu, &has_children);
+ cur_ptr = read_full_die (reader, &die, info_ptr, &has_children);
if (die == NULL)
{
*new_info_ptr = cur_ptr;
return NULL;
}
- store_in_ref_table (die, cu);
+ store_in_ref_table (die, reader->cu);
if (has_children)
- {
- die->child = read_die_and_siblings (cur_ptr, abfd, cu,
- new_info_ptr, die);
- }
+ die->child = read_die_and_siblings (reader, cur_ptr, new_info_ptr, die);
else
{
die->child = NULL;
in read_die_and_children. */
static struct die_info *
-read_die_and_siblings (gdb_byte *info_ptr, bfd *abfd,
- struct dwarf2_cu *cu,
+read_die_and_siblings (const struct die_reader_specs *reader,
+ gdb_byte *info_ptr,
gdb_byte **new_info_ptr,
struct die_info *parent)
{
while (1)
{
struct die_info *die
- = read_die_and_children_1 (cur_ptr, abfd, cu, &cur_ptr, parent);
+ = read_die_and_children_1 (reader, cur_ptr, &cur_ptr, parent);
if (die == NULL)
{
}
}
+/* Read the die from the .debug_info section buffer. Set DIEP to
+ point to a newly allocated die with its information, except for its
+ child, sibling, and parent fields. Set HAS_CHILDREN to tell
+ whether the die has children or not. */
+
+static gdb_byte *
+read_full_die (const struct die_reader_specs *reader,
+ struct die_info **diep, gdb_byte *info_ptr,
+ int *has_children)
+{
+ unsigned int abbrev_number, bytes_read, i, offset;
+ struct abbrev_info *abbrev;
+ struct die_info *die;
+ struct dwarf2_cu *cu = reader->cu;
+ bfd *abfd = reader->abfd;
+
+ offset = info_ptr - reader->buffer;
+ abbrev_number = read_unsigned_leb128 (abfd, info_ptr, &bytes_read);
+ info_ptr += bytes_read;
+ if (!abbrev_number)
+ {
+ *diep = NULL;
+ *has_children = 0;
+ return info_ptr;
+ }
+
+ abbrev = dwarf2_lookup_abbrev (abbrev_number, cu);
+ if (!abbrev)
+ error (_("Dwarf Error: could not find abbrev number %d [in module %s]"),
+ abbrev_number,
+ bfd_get_filename (abfd));
+
+ die = dwarf_alloc_die (cu, abbrev->num_attrs);
+ die->offset = offset;
+ die->tag = abbrev->tag;
+ die->abbrev = abbrev_number;
+
+ die->num_attrs = abbrev->num_attrs;
+
+ for (i = 0; i < abbrev->num_attrs; ++i)
+ info_ptr = read_attribute (&die->attrs[i], &abbrev->attrs[i],
+ abfd, info_ptr, cu);
+
+ *diep = die;
+ *has_children = abbrev->has_children;
+ return info_ptr;
+}
+
/* 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
memset (cu->dwarf2_abbrevs, 0,
ABBREV_HASH_SIZE * sizeof (struct abbrev_info *));
+ dwarf2_read_section (dwarf2_per_objfile->objfile,
+ &dwarf2_per_objfile->abbrev);
abbrev_ptr = dwarf2_per_objfile->abbrev.buffer + cu_header->abbrev_offset;
abbrev_number = read_unsigned_leb128 (abfd, abbrev_ptr, &bytes_read);
abbrev_ptr += bytes_read;
allocated_attrs = ATTR_ALLOC_CHUNK;
cur_attrs = xmalloc (allocated_attrs * sizeof (struct attr_abbrev));
-
+
/* loop until we reach an abbrev number of 0 */
while (abbrev_number)
{
/* Load all DIEs that are interesting for partial symbols into memory. */
static struct partial_die_info *
-load_partial_dies (bfd *abfd, gdb_byte *info_ptr, int building_psymtab,
- struct dwarf2_cu *cu)
+load_partial_dies (bfd *abfd, gdb_byte *buffer, gdb_byte *info_ptr,
+ int building_psymtab, struct dwarf2_cu *cu)
{
struct partial_die_info *part_die;
struct partial_die_info *parent_die, *last_die, *first_die = NULL;
&& abbrev->tag != DW_TAG_lexical_block
&& abbrev->tag != DW_TAG_variable
&& abbrev->tag != DW_TAG_namespace
+ && abbrev->tag != DW_TAG_module
&& abbrev->tag != DW_TAG_member)
{
/* Otherwise we skip to the next sibling, if any. */
- info_ptr = skip_one_die (info_ptr + bytes_read, abbrev, cu);
+ info_ptr = skip_one_die (buffer, info_ptr + bytes_read, abbrev, cu);
continue;
}
- info_ptr = read_partial_die (part_die, abbrev, bytes_read,
- abfd, info_ptr, cu);
+ info_ptr = read_partial_die (part_die, abbrev, bytes_read, abfd,
+ buffer, info_ptr, cu);
/* This two-pass algorithm for processing partial symbols has a
high cost in cache pressure. Thus, handle some simple cases
|| part_die->tag == DW_TAG_subrange_type))
{
if (building_psymtab && part_die->name != NULL)
- add_psymbol_to_list (part_die->name, strlen (part_die->name),
+ add_psymbol_to_list (part_die->name, strlen (part_die->name), 0,
VAR_DOMAIN, LOC_TYPEDEF,
&cu->objfile->static_psymbols,
0, (CORE_ADDR) 0, cu->language, cu->objfile);
- info_ptr = locate_pdi_sibling (part_die, info_ptr, abfd, cu);
+ info_ptr = locate_pdi_sibling (part_die, buffer, info_ptr, abfd, cu);
continue;
}
if (part_die->name == NULL)
complaint (&symfile_complaints, _("malformed enumerator DIE ignored"));
else if (building_psymtab)
- add_psymbol_to_list (part_die->name, strlen (part_die->name),
+ add_psymbol_to_list (part_die->name, strlen (part_die->name), 0,
VAR_DOMAIN, LOC_CONST,
(cu->language == language_cplus
|| cu->language == language_java)
: &cu->objfile->static_psymbols,
0, (CORE_ADDR) 0, cu->language, cu->objfile);
- info_ptr = locate_pdi_sibling (part_die, info_ptr, abfd, cu);
+ info_ptr = locate_pdi_sibling (part_die, buffer, info_ptr, abfd, cu);
continue;
}
if (last_die->has_children
&& (load_all
|| last_die->tag == DW_TAG_namespace
+ || last_die->tag == DW_TAG_module
|| last_die->tag == DW_TAG_enumeration_type
|| (cu->language != language_c
&& (last_die->tag == DW_TAG_class_type
}
/* Otherwise we skip to the next sibling, if any. */
- info_ptr = locate_pdi_sibling (last_die, info_ptr, abfd, cu);
+ info_ptr = locate_pdi_sibling (last_die, buffer, info_ptr, abfd, cu);
/* Back to the top, do it again. */
}
read_partial_die (struct partial_die_info *part_die,
struct abbrev_info *abbrev,
unsigned int abbrev_len, bfd *abfd,
- gdb_byte *info_ptr, struct dwarf2_cu *cu)
+ gdb_byte *buffer, gdb_byte *info_ptr,
+ struct dwarf2_cu *cu)
{
- unsigned int bytes_read, i;
+ unsigned int i;
struct attribute attr;
int has_low_pc_attr = 0;
int has_high_pc_attr = 0;
- CORE_ADDR base_address = 0;
- enum
- {
- base_address_none,
- base_address_low_pc,
- /* Overrides BASE_ADDRESS_LOW_PC. */
- base_address_entry_pc
- }
- base_address_type = base_address_none;
memset (part_die, 0, sizeof (struct partial_die_info));
- part_die->offset = info_ptr - dwarf2_per_objfile->info.buffer;
+ part_die->offset = info_ptr - buffer;
info_ptr += abbrev_len;
switch (part_die->tag)
{
case DW_TAG_compile_unit:
+ case DW_TAG_type_unit:
/* Compilation units have a DW_AT_name that is a filename, not
a source language identifier. */
case DW_TAG_enumeration_type:
default:
part_die->name
= dwarf2_canonicalize_name (DW_STRING (&attr), cu,
- &cu->comp_unit_obstack);
+ &cu->objfile->objfile_obstack);
break;
}
break;
- case DW_AT_comp_dir:
- if (part_die->dirname == NULL)
- part_die->dirname = DW_STRING (&attr);
- break;
+ case DW_AT_linkage_name:
case DW_AT_MIPS_linkage_name:
- part_die->name = DW_STRING (&attr);
+ /* Note that both forms of linkage name might appear. We
+ assume they will be the same, and we only store the last
+ one we see. */
+ if (cu->language == language_ada)
+ part_die->name = DW_STRING (&attr);
break;
case DW_AT_low_pc:
has_low_pc_attr = 1;
part_die->lowpc = DW_ADDR (&attr);
- if (part_die->tag == DW_TAG_compile_unit
- && base_address_type < base_address_low_pc)
- {
- base_address = DW_ADDR (&attr);
- base_address_type = base_address_low_pc;
- }
break;
case DW_AT_high_pc:
has_high_pc_attr = 1;
part_die->highpc = DW_ADDR (&attr);
break;
- case DW_AT_entry_pc:
- if (part_die->tag == DW_TAG_compile_unit
- && base_address_type < base_address_entry_pc)
- {
- base_address = DW_ADDR (&attr);
- base_address_type = base_address_entry_pc;
- }
- break;
- case DW_AT_ranges:
- if (part_die->tag == DW_TAG_compile_unit)
- {
- cu->ranges_offset = DW_UNSND (&attr);
- cu->has_ranges_offset = 1;
- }
- break;
case DW_AT_location:
/* Support the .debug_loc offsets */
if (attr_form_is_block (&attr))
"partial symbol information");
}
break;
- case DW_AT_language:
- part_die->language = DW_UNSND (&attr);
- break;
case DW_AT_external:
part_die->is_external = DW_UNSND (&attr);
break;
if (attr.form == DW_FORM_ref_addr)
complaint (&symfile_complaints, _("ignoring absolute DW_AT_sibling"));
else
- part_die->sibling = dwarf2_per_objfile->info.buffer
- + dwarf2_get_ref_die_offset (&attr);
+ part_die->sibling = buffer + dwarf2_get_ref_die_offset (&attr);
break;
- case DW_AT_stmt_list:
- part_die->has_stmt_list = 1;
- part_die->line_offset = DW_UNSND (&attr);
- break;
case DW_AT_byte_size:
part_die->has_byte_size = 1;
break;
|| dwarf2_per_objfile->has_section_at_zero))
part_die->has_pc_info = 1;
- if (base_address_type != base_address_none && !cu->base_known)
- {
- gdb_assert (part_die->tag == DW_TAG_compile_unit);
- cu->base_known = 1;
- cu->base_address = base_address;
- }
-
return info_ptr;
}
return lookup_die;
}
-/* Find a partial DIE at OFFSET, which may or may not be in CU. */
+/* Find a partial DIE at OFFSET, which may or may not be in CU,
+ except in the case of .debug_types DIEs which do not reference
+ outside their CU (they do however referencing other types via
+ DW_FORM_sig8). */
static struct partial_die_info *
find_partial_die (unsigned int offset, struct dwarf2_cu *cu)
struct dwarf2_per_cu_data *per_cu = NULL;
struct partial_die_info *pd = NULL;
+ if (cu->per_cu->from_debug_types)
+ {
+ pd = find_partial_die_in_comp_unit (offset, cu);
+ if (pd != NULL)
+ return pd;
+ goto not_found;
+ }
+
if (offset_in_cu_p (&cu->header, offset))
{
pd = find_partial_die_in_comp_unit (offset, cu);
if (per_cu->cu == NULL)
{
- load_comp_unit (per_cu, cu->objfile);
+ load_partial_comp_unit (per_cu, cu->objfile);
per_cu->cu->read_in_chain = dwarf2_per_objfile->read_in_chain;
dwarf2_per_objfile->read_in_chain = per_cu;
}
if (per_cu->cu->dwarf2_abbrevs == NULL)
{
dwarf2_read_abbrevs (per_cu->cu->objfile->obfd, per_cu->cu);
- back_to = make_cleanup (dwarf2_free_abbrev_table, per_cu->cu);
+ make_cleanup (dwarf2_free_abbrev_table, per_cu->cu);
}
info_ptr = (dwarf2_per_objfile->info.buffer
+ per_cu->cu->header.offset
+ per_cu->cu->header.first_die_offset);
abbrev = peek_die_abbrev (info_ptr, &bytes_read, per_cu->cu);
info_ptr = read_partial_die (&comp_unit_die, abbrev, bytes_read,
- per_cu->cu->objfile->obfd, info_ptr,
+ per_cu->cu->objfile->obfd,
+ dwarf2_per_objfile->info.buffer, info_ptr,
per_cu->cu);
if (comp_unit_die.has_children)
- load_partial_dies (per_cu->cu->objfile->obfd, info_ptr, 0, per_cu->cu);
+ load_partial_dies (per_cu->cu->objfile->obfd,
+ dwarf2_per_objfile->info.buffer, info_ptr,
+ 0, per_cu->cu);
do_cleanups (back_to);
pd = find_partial_die_in_comp_unit (offset, per_cu->cu);
}
+ not_found:
+
if (pd == NULL)
internal_error (__FILE__, __LINE__,
_("could not find partial DIE 0x%x in cache [from module %s]\n"),
guess_structure_name (part_die, cu);
}
-/* Read the die from the .debug_info section buffer. Set DIEP to
- point to a newly allocated die with its information, except for its
- child, sibling, and parent fields. Set HAS_CHILDREN to tell
- whether the die has children or not. */
-
-static gdb_byte *
-read_full_die (struct die_info **diep, bfd *abfd, gdb_byte *info_ptr,
- struct dwarf2_cu *cu, int *has_children)
-{
- unsigned int abbrev_number, bytes_read, i, offset;
- struct abbrev_info *abbrev;
- struct die_info *die;
-
- offset = info_ptr - dwarf2_per_objfile->info.buffer;
- abbrev_number = read_unsigned_leb128 (abfd, info_ptr, &bytes_read);
- info_ptr += bytes_read;
- if (!abbrev_number)
- {
- *diep = NULL;
- *has_children = 0;
- return info_ptr;
- }
-
- abbrev = dwarf2_lookup_abbrev (abbrev_number, cu);
- if (!abbrev)
- {
- error (_("Dwarf Error: could not find abbrev number %d [in module %s]"),
- abbrev_number,
- bfd_get_filename (abfd));
- }
- die = dwarf_alloc_die (cu, abbrev->num_attrs);
- die->offset = offset;
- die->tag = abbrev->tag;
- die->abbrev = abbrev_number;
-
- die->num_attrs = abbrev->num_attrs;
-
- for (i = 0; i < abbrev->num_attrs; ++i)
- info_ptr = read_attribute (&die->attrs[i], &abbrev->attrs[i],
- abfd, info_ptr, cu);
-
- *diep = die;
- *has_children = abbrev->has_children;
- return info_ptr;
-}
-
/* Read an attribute value described by an attribute form. */
static gdb_byte *
attr->form = form;
switch (form)
{
- case DW_FORM_addr:
case DW_FORM_ref_addr:
+ if (cu->header.version == 2)
+ DW_ADDR (attr) = read_address (abfd, info_ptr, cu, &bytes_read);
+ else
+ DW_ADDR (attr) = read_offset (abfd, info_ptr, &cu->header, &bytes_read);
+ info_ptr += bytes_read;
+ break;
+ case DW_FORM_addr:
DW_ADDR (attr) = read_address (abfd, info_ptr, cu, &bytes_read);
info_ptr += bytes_read;
break;
DW_UNSND (attr) = read_8_bytes (abfd, info_ptr);
info_ptr += 8;
break;
+ case DW_FORM_sec_offset:
+ DW_UNSND (attr) = read_offset (abfd, info_ptr, &cu->header, &bytes_read);
+ info_ptr += bytes_read;
+ break;
case DW_FORM_string:
DW_STRING (attr) = read_string (abfd, info_ptr, &bytes_read);
+ DW_STRING_IS_CANONICAL (attr) = 0;
info_ptr += bytes_read;
break;
case DW_FORM_strp:
DW_STRING (attr) = read_indirect_string (abfd, info_ptr, cu_header,
&bytes_read);
+ DW_STRING_IS_CANONICAL (attr) = 0;
info_ptr += bytes_read;
break;
+ case DW_FORM_exprloc:
case DW_FORM_block:
blk = dwarf_alloc_block (cu);
blk->size = read_unsigned_leb128 (abfd, info_ptr, &bytes_read);
DW_UNSND (attr) = read_1_byte (abfd, info_ptr);
info_ptr += 1;
break;
+ case DW_FORM_flag_present:
+ DW_UNSND (attr) = 1;
+ break;
case DW_FORM_sdata:
DW_SND (attr) = read_signed_leb128 (abfd, info_ptr, &bytes_read);
info_ptr += bytes_read;
DW_ADDR (attr) = cu->header.offset + read_8_bytes (abfd, info_ptr);
info_ptr += 8;
break;
+ case DW_FORM_sig8:
+ /* Convert the signature to something we can record in DW_UNSND
+ for later lookup.
+ NOTE: This is NULL if the type wasn't found. */
+ DW_SIGNATURED_TYPE (attr) =
+ lookup_signatured_type (cu->objfile, read_8_bytes (abfd, info_ptr));
+ info_ptr += 8;
+ break;
case DW_FORM_ref_udata:
DW_ADDR (attr) = (cu->header.offset
+ read_unsigned_leb128 (abfd, info_ptr, &bytes_read));
{
complaint
(&symfile_complaints,
- _("Suspicious DW_AT_byte_size value treated as zero instead of 0x%lx"),
- DW_UNSND (attr));
+ _("Suspicious DW_AT_byte_size value treated as zero instead of %s"),
+ hex_string (DW_UNSND (attr)));
DW_UNSND (attr) = 0;
}
return bfd_get_signed_32 (abfd, buf);
}
-static unsigned long
+static ULONGEST
read_8_bytes (bfd *abfd, gdb_byte *buf)
{
return bfd_get_64 (abfd, buf);
from:
http://reality.sgiweb.org/davea/dwarf3-draft8-011125.pdf
-
+
This document is only a draft and is subject to change. (So beware.)
Details regarding the older, non-standard 64-bit format were
unsigned int *bytes_read)
{
LONGEST offset = read_offset_1 (abfd, buf, cu_header->offset_size);
+
*bytes_read = cu_header->offset_size;
return offset;
}
{
LONGEST str_offset = read_offset (abfd, buf, cu_header, bytes_read_ptr);
+ dwarf2_read_section (dwarf2_per_objfile->objfile, &dwarf2_per_objfile->str);
if (dwarf2_per_objfile->str.buffer == NULL)
{
error (_("DW_FORM_strp used without .debug_str section [in module %s]"),
case DW_LANG_C_plus_plus:
cu->language = language_cplus;
break;
+ case DW_LANG_D:
+ cu->language = language_d;
+ break;
case DW_LANG_Fortran77:
case DW_LANG_Fortran90:
case DW_LANG_Fortran95:
return NULL;
}
+/* Return the named attribute or NULL if not there,
+ but do not follow DW_AT_specification, etc.
+ This is for use in contexts where we're reading .debug_types dies.
+ Following DW_AT_specification, DW_AT_abstract_origin will take us
+ back up the chain, and we want to go down. */
+
+static struct attribute *
+dwarf2_attr_no_follow (struct die_info *die, unsigned int name,
+ struct dwarf2_cu *cu)
+{
+ unsigned int i;
+
+ for (i = 0; i < die->num_attrs; ++i)
+ if (die->attrs[i].name == name)
+ return &die->attrs[i];
+
+ return NULL;
+}
+
/* Return non-zero iff the attribute NAME is defined for the given DIE,
and holds a non-zero value. This function should only be used for
- DW_FORM_flag attributes. */
+ DW_FORM_flag or DW_FORM_flag_present attributes. */
static int
dwarf2_flag_true_p (struct die_info *die, unsigned name, struct dwarf2_cu *cu)
/* Return the die giving the specification for DIE, if there is
one. *SPEC_CU is the CU containing DIE on input, and the CU
- containing the return value on output. */
+ containing the return value on output. If there is no
+ specification, but there is an abstract origin, that is
+ returned. */
static struct die_info *
die_specification (struct die_info *die, struct dwarf2_cu **spec_cu)
struct attribute *spec_attr = dwarf2_attr (die, DW_AT_specification,
*spec_cu);
+ if (spec_attr == NULL)
+ spec_attr = dwarf2_attr (die, DW_AT_abstract_origin, *spec_cu);
+
if (spec_attr == NULL)
return NULL;
else
lh->include_dirs[lh->num_include_dirs++] = include_dir;
}
-
+
/* Add an entry to LH's file name table. */
static void
fe->included_p = 0;
fe->symtab = NULL;
}
-
+
/* Read the statement program header starting at OFFSET in
.debug_line, according to the endianness of ABFD. Return a pointer
int i;
char *cur_dir, *cur_file;
+ dwarf2_read_section (dwarf2_per_objfile->objfile, &dwarf2_per_objfile->line);
if (dwarf2_per_objfile->line.buffer == NULL)
{
complaint (&symfile_complaints, _("missing .debug_line section"));
line_ptr = dwarf2_per_objfile->line.buffer + offset;
/* Read in the header. */
- lh->total_length =
+ lh->total_length =
read_checked_initial_length_and_offset (abfd, line_ptr, &cu->header,
&bytes_read, &offset_size);
line_ptr += bytes_read;
line_ptr += offset_size;
lh->minimum_instruction_length = read_1_byte (abfd, line_ptr);
line_ptr += 1;
+ if (lh->version >= 4)
+ {
+ lh->maximum_ops_per_instruction = read_1_byte (abfd, line_ptr);
+ line_ptr += 1;
+ }
+ else
+ lh->maximum_ops_per_instruction = 1;
+
+ if (lh->maximum_ops_per_instruction == 0)
+ {
+ lh->maximum_ops_per_instruction = 1;
+ complaint (&symfile_complaints,
+ _("invalid maximum_ops_per_instruction in `.debug_line' section"));
+ }
+
lh->default_is_stmt = read_1_byte (abfd, line_ptr);
line_ptr += 1;
lh->line_base = read_1_signed_byte (abfd, line_ptr);
add_file_name (lh, cur_file, dir_index, mod_time, length);
}
line_ptr += bytes_read;
- lh->statement_program_start = line_ptr;
+ lh->statement_program_start = line_ptr;
if (line_ptr > (dwarf2_per_objfile->line.buffer
+ dwarf2_per_objfile->line.size))
to create all necessary symbol tables, and their linetables.
The compilation directory of the file is passed in COMP_DIR,
and must not be NULL.
-
+
2. If PST is not NULL, this procedure reads the program to determine
the list of files included by the unit represented by PST, and
builds all the associated partial symbol tables. In this case,
int basic_block = 0;
int end_sequence = 0;
CORE_ADDR addr;
+ unsigned char op_index = 0;
if (!decode_for_pst_p && lh->num_file_names >= file)
{
}
if (op_code >= lh->opcode_base)
- {
+ {
/* Special operand. */
adj_opcode = op_code - lh->opcode_base;
- address += (adj_opcode / lh->line_range)
- * lh->minimum_instruction_length;
+ address += (((op_index + (adj_opcode / lh->line_range))
+ / lh->maximum_ops_per_instruction)
+ * lh->minimum_instruction_length);
+ op_index = ((op_index + (adj_opcode / lh->line_range))
+ % lh->maximum_ops_per_instruction);
line += lh->line_base + (adj_opcode % lh->line_range);
if (lh->num_file_names < file || file == 0)
dwarf2_debug_line_missing_file_complaint ();
- else
+ /* For now we ignore lines not starting on an
+ instruction boundary. */
+ else if (op_index == 0)
{
lh->file_names[file - 1].included_p = 1;
- if (!decode_for_pst_p)
+ if (!decode_for_pst_p && is_stmt)
{
if (last_subfile != current_subfile)
{
record_line (current_subfile, line, addr);
}
}
- basic_block = 1;
+ basic_block = 0;
}
else switch (op_code)
{
break;
case DW_LNE_set_address:
address = read_address (abfd, line_ptr, cu, &bytes_read);
+ op_index = 0;
line_ptr += bytes_read;
address += baseaddr;
break;
{
char *cur_file;
unsigned int dir_index, mod_time, length;
-
+
cur_file = read_string (abfd, line_ptr, &bytes_read);
line_ptr += bytes_read;
dir_index =
else
{
lh->file_names[file - 1].included_p = 1;
- if (!decode_for_pst_p)
+ if (!decode_for_pst_p && is_stmt)
{
if (last_subfile != current_subfile)
{
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;
+ {
+ CORE_ADDR adjust
+ = read_unsigned_leb128 (abfd, line_ptr, &bytes_read);
+
+ address += (((op_index + adjust)
+ / lh->maximum_ops_per_instruction)
+ * lh->minimum_instruction_length);
+ op_index = ((op_index + adjust)
+ % lh->maximum_ops_per_instruction);
+ line_ptr += bytes_read;
+ }
break;
case DW_LNS_advance_line:
line += read_signed_leb128 (abfd, line_ptr, &bytes_read);
instruction length since special opcode 255 would have
scaled the the increment. */
case DW_LNS_const_add_pc:
- address += (lh->minimum_instruction_length
- * ((255 - lh->opcode_base) / lh->line_range));
+ {
+ CORE_ADDR adjust = (255 - lh->opcode_base) / lh->line_range;
+
+ address += (((op_index + adjust)
+ / lh->maximum_ops_per_instruction)
+ * lh->minimum_instruction_length);
+ op_index = ((op_index + adjust)
+ % lh->maximum_ops_per_instruction);
+ }
break;
case DW_LNS_fixed_advance_pc:
address += read_2_bytes (abfd, line_ptr);
+ op_index = 0;
line_ptr += 2;
break;
default:
for (i = 0; i < lh->num_file_names; i++)
{
char *dir = NULL;
+
fe = &lh->file_names[i];
if (fe->dir_index)
dir = lh->include_dirs[fe->dir_index - 1];
new_symbol (struct die_info *die, struct type *type, struct dwarf2_cu *cu)
{
struct objfile *objfile = cu->objfile;
- struct gdbarch *gdbarch = get_objfile_arch (objfile);
struct symbol *sym = NULL;
char *name;
struct attribute *attr = NULL;
struct attribute *attr2 = NULL;
CORE_ADDR baseaddr;
+ int inlined_func = (die->tag == DW_TAG_inlined_subroutine);
baseaddr = ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile));
- if (die->tag != DW_TAG_namespace)
- name = dwarf2_linkage_name (die, cu);
- else
- name = TYPE_NAME (type);
-
+ name = dwarf2_name (die, cu);
if (name)
{
+ const char *linkagename;
+
sym = (struct symbol *) obstack_alloc (&objfile->objfile_obstack,
sizeof (struct symbol));
OBJSTAT (objfile, n_syms++);
/* Cache this symbol's name and the name's demangled form (if any). */
SYMBOL_LANGUAGE (sym) = cu->language;
- SYMBOL_SET_NAMES (sym, name, strlen (name), objfile);
+ linkagename = dwarf2_physname (name, die, cu);
+ SYMBOL_SET_NAMES (sym, linkagename, strlen (linkagename), 0, objfile);
+
+ /* Fortran does not have mangling standard and the mangling does differ
+ between gfortran, iFort etc. */
+ if (cu->language == language_fortran
+ && sym->ginfo.language_specific.cplus_specific.demangled_name == NULL)
+ sym->ginfo.language_specific.cplus_specific.demangled_name
+ = (char *) dwarf2_full_name (name, die, cu);
/* Default assumptions.
Use the passed type or decode it from the die. */
SYMBOL_TYPE (sym) = type;
else
SYMBOL_TYPE (sym) = die_type (die, cu);
- attr = dwarf2_attr (die, DW_AT_decl_line, cu);
+ attr = dwarf2_attr (die,
+ inlined_func ? DW_AT_call_line : DW_AT_decl_line,
+ cu);
if (attr)
{
SYMBOL_LINE (sym) = DW_UNSND (attr);
}
- attr = dwarf2_attr (die, DW_AT_decl_file, cu);
+ attr = dwarf2_attr (die,
+ inlined_func ? DW_AT_call_file : DW_AT_decl_file,
+ cu);
if (attr)
{
int file_index = DW_UNSND (attr);
+
if (cu->line_header == NULL
|| file_index > cu->line_header->num_file_names)
complaint (&symfile_complaints,
else if (file_index > 0)
{
struct file_entry *fe;
+
fe = &cu->line_header->file_names[file_index - 1];
SYMBOL_SYMTAB (sym) = fe->symtab;
}
add_symbol_to_list (sym, cu->list_in_scope);
}
break;
+ case DW_TAG_inlined_subroutine:
+ /* SYMBOL_BLOCK_VALUE (sym) will be filled in later by
+ finish_block. */
+ SYMBOL_CLASS (sym) = LOC_BLOCK;
+ SYMBOL_INLINED (sym) = 1;
+ /* Do not add the symbol to any lists. It will be found via
+ BLOCK_FUNCTION from the blockvector. */
+ break;
case DW_TAG_variable:
+ case DW_TAG_member:
/* 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)
- = builtin_type (gdbarch)->nodebug_data_symbol;
+ = objfile_type (objfile)->nodebug_data_symbol;
attr = dwarf2_attr (die, DW_AT_const_value, cu);
+ /* In the case of DW_TAG_member, we should only be called for
+ static const members. */
+ if (die->tag == DW_TAG_member)
+ {
+ /* NOTE: This test seems wrong according to the dwarf standard.
+ static data members are represented by DW_AT_external.
+ However, dwarf2_add_field is currently calling
+ die_is_declaration to check, so we do the same. */
+ gdb_assert (die_is_declaration (die, cu));
+ gdb_assert (attr);
+ }
if (attr)
{
dwarf2_const_value (attr, sym, cu);
var_decode_location (attr, sym, cu);
attr2 = dwarf2_attr (die, DW_AT_external, cu);
if (attr2 && (DW_UNSND (attr2) != 0))
- add_symbol_to_list (sym, &global_symbols);
+ {
+ struct pending **list_to_add;
+
+ /* Workaround gfortran PR debug/40040 - it uses
+ DW_AT_location for variables in -fPIC libraries which may
+ get overriden by other libraries/executable and get
+ a different address. Resolve it by the minimal symbol
+ which may come from inferior's executable using copy
+ relocation. Make this workaround only for gfortran as for
+ other compilers GDB cannot guess the minimal symbol
+ Fortran mangling kind. */
+ if (cu->language == language_fortran && die->parent
+ && die->parent->tag == DW_TAG_module
+ && cu->producer
+ && strncmp (cu->producer, "GNU Fortran ", 12) == 0)
+ SYMBOL_CLASS (sym) = LOC_UNRESOLVED;
+
+ /* A variable with DW_AT_external is never static,
+ but it may be block-scoped. */
+ list_to_add = (cu->list_in_scope == &file_symbols
+ ? &global_symbols : cu->list_in_scope);
+ add_symbol_to_list (sym, list_to_add);
+ }
else
add_symbol_to_list (sym, cu->list_in_scope);
}
if (attr2 && (DW_UNSND (attr2) != 0)
&& dwarf2_attr (die, DW_AT_type, cu) != NULL)
{
+ struct pending **list_to_add;
+
+ /* A variable with DW_AT_external is never static, but it
+ may be block-scoped. */
+ list_to_add = (cu->list_in_scope == &file_symbols
+ ? &global_symbols : cu->list_in_scope);
+
SYMBOL_CLASS (sym) = LOC_UNRESOLVED;
- add_symbol_to_list (sym, cu->list_in_scope);
+ add_symbol_to_list (sym, list_to_add);
}
else if (!die_is_declaration (die, cu))
{
}
break;
case DW_TAG_formal_parameter:
- SYMBOL_IS_ARGUMENT (sym) = 1;
+ /* If we are inside a function, mark this as an argument. If
+ not, we might be looking at an argument to an inlined function
+ when we do not have enough information to show inlined frames;
+ pretend it's a local variable in that case so that the user can
+ still see it. */
+ if (context_stack_depth > 0
+ && context_stack[context_stack_depth - 1].name != NULL)
+ SYMBOL_IS_ARGUMENT (sym) = 1;
attr = dwarf2_attr (die, DW_AT_location, cu);
if (attr)
{
{
dwarf2_const_value (attr, sym, cu);
}
+ attr = dwarf2_attr (die, DW_AT_variable_parameter, cu);
+ if (attr && DW_UNSND (attr))
+ {
+ struct type *ref_type;
+
+ ref_type = lookup_reference_type (SYMBOL_TYPE (sym));
+ SYMBOL_TYPE (sym) = ref_type;
+ }
+
add_symbol_to_list (sym, cu->list_in_scope);
break;
case DW_TAG_unspecified_parameters:
SYMBOL_CLASS (sym) = LOC_TYPEDEF;
SYMBOL_DOMAIN (sym) = STRUCT_DOMAIN;
- /* Make sure that the symbol includes appropriate enclosing
- classes/namespaces in its name. These are calculated in
- read_structure_type, and the correct name is saved in
- the type. */
-
- if (cu->language == language_cplus
- || cu->language == language_java)
- {
- struct type *type = SYMBOL_TYPE (sym);
-
- if (TYPE_TAG_NAME (type) != NULL)
- {
- /* FIXME: carlton/2003-11-10: Should this use
- SYMBOL_SET_NAMES instead? (The same problem also
- arises further down in this function.) */
- /* The type's name is already allocated along with
- this objfile, so we don't need to duplicate it
- for the symbol. */
- SYMBOL_LINKAGE_NAME (sym) = TYPE_TAG_NAME (type);
- }
- }
-
{
/* NOTE: carlton/2003-11-10: C++ and Java class symbols shouldn't
really ever be static objects: otherwise, if you try
&& (cu->language == language_cplus
|| cu->language == language_java)
? &global_symbols : cu->list_in_scope);
-
+
add_symbol_to_list (sym, list_to_add);
/* The semantics of C++ state that "struct foo { ... }" also
}
break;
case DW_TAG_typedef:
- SYMBOL_LINKAGE_NAME (sym) = (char *) dwarf2_full_name (die, cu);
SYMBOL_CLASS (sym) = LOC_TYPEDEF;
SYMBOL_DOMAIN (sym) = VAR_DOMAIN;
add_symbol_to_list (sym, cu->list_in_scope);
break;
case DW_TAG_base_type:
case DW_TAG_subrange_type:
+ case DW_TAG_const_type:
+ case DW_TAG_volatile_type:
SYMBOL_CLASS (sym) = LOC_TYPEDEF;
SYMBOL_DOMAIN (sym) = VAR_DOMAIN;
add_symbol_to_list (sym, cu->list_in_scope);
break;
case DW_TAG_enumerator:
- SYMBOL_LINKAGE_NAME (sym) = (char *) dwarf2_full_name (die, cu);
attr = dwarf2_attr (die, DW_AT_const_value, cu);
if (attr)
{
&& (cu->language == language_cplus
|| cu->language == language_java)
? &global_symbols : cu->list_in_scope);
-
+
add_symbol_to_list (sym, list_to_add);
}
break;
/* For the benefit of old versions of GCC, check for anonymous
namespaces based on the demangled name. */
if (!processing_has_namespace_info
- && cu->language == language_cplus
- && dwarf2_attr (die, DW_AT_MIPS_linkage_name, cu) != NULL)
+ && cu->language == language_cplus)
cp_scan_for_anonymous_namespaces (sym);
}
return (sym);
{
struct objfile *objfile = cu->objfile;
struct comp_unit_head *cu_header = &cu->header;
+ enum bfd_endian byte_order = bfd_big_endian (objfile->obfd) ?
+ BFD_ENDIAN_BIG : BFD_ENDIAN_LITTLE;
struct dwarf_block *blk;
switch (attr->form)
cu_header->addr_size,
TYPE_LENGTH (SYMBOL_TYPE
(sym)));
- SYMBOL_VALUE_BYTES (sym) =
+ SYMBOL_VALUE_BYTES (sym) =
obstack_alloc (&objfile->objfile_obstack, cu_header->addr_size);
/* NOTE: cagney/2003-05-09: In-lined store_address call with
it's body - store_unsigned_integer. */
store_unsigned_integer (SYMBOL_VALUE_BYTES (sym), cu_header->addr_size,
- DW_ADDR (attr));
+ byte_order, DW_ADDR (attr));
SYMBOL_CLASS (sym) = LOC_CONST_BYTES;
break;
case DW_FORM_string:
case DW_FORM_block2:
case DW_FORM_block4:
case DW_FORM_block:
+ case DW_FORM_exprloc:
blk = DW_BLOCK (attr);
if (TYPE_LENGTH (SYMBOL_TYPE (sym)) != blk->size)
dwarf2_const_value_length_mismatch_complaint (SYMBOL_PRINT_NAME (sym),
static struct type *
die_type (struct die_info *die, struct dwarf2_cu *cu)
{
- struct gdbarch *gdbarch = get_objfile_arch (cu->objfile);
- struct type *type;
struct attribute *type_attr;
struct die_info *type_die;
if (!type_attr)
{
/* A missing DW_AT_type represents a void type. */
- return builtin_type (gdbarch)->builtin_void;
+ return objfile_type (cu->objfile)->builtin_void;
}
- else
- type_die = follow_die_ref (die, type_attr, &cu);
- type = tag_type_to_type (type_die, cu);
- if (!type)
+ type_die = follow_die_ref_or_sig (die, type_attr, &cu);
+
+ return tag_type_to_type (type_die, cu);
+}
+
+/* True iff CU's producer generates GNAT Ada auxiliary information
+ that allows to find parallel types through that information instead
+ of having to do expensive parallel lookups by type name. */
+
+static int
+need_gnat_info (struct dwarf2_cu *cu)
+{
+ /* FIXME: brobecker/2010-10-12: As of now, only the AdaCore version
+ of GNAT produces this auxiliary information, without any indication
+ that it is produced. Part of enhancing the FSF version of GNAT
+ to produce that information will be to put in place an indicator
+ that we can use in order to determine whether the descriptive type
+ info is available or not. One suggestion that has been made is
+ to use a new attribute, attached to the CU die. For now, assume
+ that the descriptive type info is not available. */
+ return 0;
+}
+
+
+/* Return the auxiliary type of the die in question using its
+ DW_AT_GNAT_descriptive_type attribute. Returns NULL if the
+ attribute is not present. */
+
+static struct type *
+die_descriptive_type (struct die_info *die, struct dwarf2_cu *cu)
+{
+ struct attribute *type_attr;
+ struct die_info *type_die;
+
+ type_attr = dwarf2_attr (die, DW_AT_GNAT_descriptive_type, cu);
+ if (!type_attr)
+ return NULL;
+
+ type_die = follow_die_ref (die, type_attr, &cu);
+ return tag_type_to_type (type_die, cu);
+}
+
+/* If DIE has a descriptive_type attribute, then set the TYPE's
+ descriptive type accordingly. */
+
+static void
+set_descriptive_type (struct type *type, struct die_info *die,
+ struct dwarf2_cu *cu)
+{
+ struct type *descriptive_type = die_descriptive_type (die, cu);
+
+ if (descriptive_type)
{
- dump_die_for_error (type_die);
- error (_("Dwarf Error: Problem turning type die at offset into gdb type [in module %s]"),
- cu->objfile->name);
+ ALLOCATE_GNAT_AUX_TYPE (type);
+ TYPE_DESCRIPTIVE_TYPE (type) = descriptive_type;
}
- return type;
}
/* Return the containing type of the die in question using its
static struct type *
die_containing_type (struct die_info *die, struct dwarf2_cu *cu)
{
- struct type *type = NULL;
struct attribute *type_attr;
- struct die_info *type_die = NULL;
+ struct die_info *type_die;
type_attr = dwarf2_attr (die, DW_AT_containing_type, cu);
- if (type_attr)
- {
- type_die = follow_die_ref (die, type_attr, &cu);
- type = tag_type_to_type (type_die, cu);
- }
- if (!type)
- {
- if (type_die)
- dump_die_for_error (type_die);
- error (_("Dwarf Error: Problem turning containing type into gdb type [in module %s]"),
- cu->objfile->name);
- }
- return type;
+ if (!type_attr)
+ error (_("Dwarf Error: Problem turning containing type into gdb type "
+ "[in module %s]"), cu->objfile->name);
+
+ type_die = follow_die_ref_or_sig (die, type_attr, &cu);
+ return tag_type_to_type (type_die, cu);
}
static struct type *
this_type = read_type_die (die, cu);
if (!this_type)
{
- dump_die_for_error (die);
- error (_("Dwarf Error: Cannot find type of die [in module %s]"),
- cu->objfile->name);
+ char *message, *saved;
+
+ /* read_type_die already issued a complaint. */
+ message = xstrprintf (_("<unknown type in %s, CU 0x%x, DIE 0x%x>"),
+ cu->objfile->name,
+ cu->header.offset,
+ die->offset);
+ saved = obstack_copy0 (&cu->objfile->objfile_obstack,
+ message, strlen (message));
+ xfree (message);
+
+ this_type = init_type (TYPE_CODE_ERROR, 0, 0, saved, cu->objfile);
}
return this_type;
}
break;
case DW_TAG_subprogram:
case DW_TAG_subroutine_type:
+ case DW_TAG_inlined_subroutine:
this_type = read_subroutine_type (die, cu);
break;
case DW_TAG_array_type:
case DW_TAG_namespace:
this_type = read_namespace_type (die, cu);
break;
+ case DW_TAG_module:
+ this_type = read_module_type (die, cu);
+ break;
default:
complaint (&symfile_complaints, _("unexpected tag in read_type_die: '%s'"),
dwarf_tag_name (die->tag));
struct dwarf2_cu *spec_cu;
struct type *parent_type;
- if (cu->language != language_cplus
- && cu->language != language_java)
+ if (cu->language != language_cplus && cu->language != language_java
+ && cu->language != language_fortran)
return "";
/* We have to be careful in the presence of DW_AT_specification.
{
case DW_TAG_namespace:
parent_type = read_type_die (parent, cu);
+ /* GCC 4.0 and 4.1 had a bug (PR c++/28460) where they generated bogus
+ DW_TAG_namespace DIEs with a name of "::" for the global namespace.
+ Work around this problem here. */
+ if (cu->language == language_cplus
+ && strcmp (TYPE_TAG_NAME (parent_type), "::") == 0)
+ return "";
/* We give a name to even anonymous namespaces. */
return TYPE_TAG_NAME (parent_type);
case DW_TAG_class_type:
case DW_TAG_interface_type:
case DW_TAG_structure_type:
case DW_TAG_union_type:
+ case DW_TAG_module:
parent_type = read_type_die (parent, cu);
if (TYPE_TAG_NAME (parent_type) != NULL)
return TYPE_TAG_NAME (parent_type);
perform an obconcat, otherwise allocate storage for the result. The CU argument
is used to determine the language and hence, the appropriate separator. */
-#define MAX_SEP_LEN 2 /* sizeof ("::") */
+#define MAX_SEP_LEN 7 /* strlen ("__") + strlen ("_MOD_") */
static char *
-typename_concat (struct obstack *obs, const char *prefix, const char *suffix,
- struct dwarf2_cu *cu)
+typename_concat (struct obstack *obs, const char *prefix, const char *suffix,
+ int physname, struct dwarf2_cu *cu)
{
- char *sep;
+ const char *lead = "";
+ const char *sep;
if (suffix == NULL || suffix[0] == '\0' || prefix == NULL || prefix[0] == '\0')
sep = "";
else if (cu->language == language_java)
sep = ".";
+ else if (cu->language == language_fortran && physname)
+ {
+ /* This is gfortran specific mangling. Normally DW_AT_linkage_name or
+ DW_AT_MIPS_linkage_name is preferred and used instead. */
+
+ lead = "__";
+ sep = "_MOD_";
+ }
else
sep = "::";
if (obs == NULL)
{
char *retval = xmalloc (strlen (prefix) + MAX_SEP_LEN + strlen (suffix) + 1);
- strcpy (retval, prefix);
+
+ strcpy (retval, lead);
+ strcat (retval, prefix);
strcat (retval, sep);
strcat (retval, suffix);
return retval;
else
{
/* We have an obstack. */
- return obconcat (obs, prefix, sep, suffix);
+ return obconcat (obs, lead, prefix, sep, suffix, (char *) NULL);
}
}
return die->sibling;
}
-/* Get linkage name of a die, return NULL if not found. */
-
-static char *
-dwarf2_linkage_name (struct die_info *die, struct dwarf2_cu *cu)
-{
- struct attribute *attr;
-
- attr = dwarf2_attr (die, DW_AT_MIPS_linkage_name, cu);
- if (attr && DW_STRING (attr))
- return DW_STRING (attr);
- return dwarf2_name (die, cu);
-}
-
/* Get name of a die, return NULL if not found. */
static char *
/* These tags always have simple identifiers already; no need
to canonicalize them. */
return DW_STRING (attr);
- default:
- if (attr->form != GDB_FORM_cached_string)
+
+ case DW_TAG_subprogram:
+ /* Java constructors will all be named "<init>", so return
+ the class name when we see this special case. */
+ if (cu->language == language_java
+ && DW_STRING (attr) != NULL
+ && strcmp (DW_STRING (attr), "<init>") == 0)
{
- DW_STRING (attr)
- = dwarf2_canonicalize_name (DW_STRING (attr), cu,
- &cu->objfile->objfile_obstack);
- attr->form = GDB_FORM_cached_string;
+ struct dwarf2_cu *spec_cu = cu;
+ struct die_info *spec_die;
+
+ /* GCJ will output '<init>' for Java constructor names.
+ For this special case, return the name of the parent class. */
+
+ /* GCJ may output suprogram DIEs with AT_specification set.
+ If so, use the name of the specified DIE. */
+ spec_die = die_specification (die, &spec_cu);
+ if (spec_die != NULL)
+ return dwarf2_name (spec_die, spec_cu);
+
+ do
+ {
+ die = die->parent;
+ if (die->tag == DW_TAG_class_type)
+ return dwarf2_name (die, cu);
+ }
+ while (die->tag != DW_TAG_compile_unit);
}
- return DW_STRING (attr);
+ break;
+
+ case DW_TAG_class_type:
+ case DW_TAG_interface_type:
+ case DW_TAG_structure_type:
+ case DW_TAG_union_type:
+ /* Some GCC versions emit spurious DW_AT_name attributes for unnamed
+ structures or unions. These were of the form "._%d" in GCC 4.1,
+ or simply "<anonymous struct>" or "<anonymous union>" in GCC 4.3
+ and GCC 4.4. We work around this problem by ignoring these. */
+ if (strncmp (DW_STRING (attr), "._", 2) == 0
+ || strncmp (DW_STRING (attr), "<anonymous", 10) == 0)
+ return NULL;
+ break;
+
+ default:
+ break;
+ }
+
+ if (!DW_STRING_IS_CANONICAL (attr))
+ {
+ DW_STRING (attr)
+ = dwarf2_canonicalize_name (DW_STRING (attr), cu,
+ &cu->objfile->objfile_obstack);
+ DW_STRING_IS_CANONICAL (attr) = 1;
}
+ return DW_STRING (attr);
}
/* Return the die that this die in an extension of, or NULL if there
return "DW_TAG_condition";
case DW_TAG_shared_type:
return "DW_TAG_shared_type";
+ case DW_TAG_type_unit:
+ return "DW_TAG_type_unit";
case DW_TAG_MIPS_loop:
return "DW_TAG_MIPS_loop";
case DW_TAG_HP_array_descriptor:
return "DW_AT_pure";
case DW_AT_recursive:
return "DW_AT_recursive";
+ /* DWARF 4 values. */
+ case DW_AT_signature:
+ return "DW_AT_signature";
+ case DW_AT_linkage_name:
+ return "DW_AT_linkage_name";
/* SGI/MIPS extensions. */
#ifdef MIPS /* collides with DW_AT_HP_block_index */
case DW_AT_MIPS_fde:
return "DW_FORM_ref_udata";
case DW_FORM_indirect:
return "DW_FORM_indirect";
- case GDB_FORM_cached_string:
- return "GDB_FORM_cached_string";
+ case DW_FORM_sec_offset:
+ return "DW_FORM_sec_offset";
+ case DW_FORM_exprloc:
+ return "DW_FORM_exprloc";
+ case DW_FORM_flag_present:
+ return "DW_FORM_flag_present";
+ case DW_FORM_sig8:
+ return "DW_FORM_sig8";
default:
return "DW_FORM_<unknown>";
}
/* Convert a DWARF stack opcode into its string name. */
-static char *
-dwarf_stack_op_name (unsigned op)
+const char *
+dwarf_stack_op_name (unsigned op, int def)
{
switch (op)
{
return "DW_OP_call4";
case DW_OP_call_ref:
return "DW_OP_call_ref";
- /* GNU extensions. */
case DW_OP_form_tls_address:
return "DW_OP_form_tls_address";
case DW_OP_call_frame_cfa:
return "DW_OP_call_frame_cfa";
case DW_OP_bit_piece:
return "DW_OP_bit_piece";
+ /* DWARF 4 extensions. */
+ case DW_OP_implicit_value:
+ return "DW_OP_implicit_value";
+ case DW_OP_stack_value:
+ return "DW_OP_stack_value";
+ /* GNU extensions. */
case DW_OP_GNU_push_tls_address:
return "DW_OP_GNU_push_tls_address";
case DW_OP_GNU_uninit:
return "DW_OP_GNU_uninit";
- /* HP extensions. */
- case DW_OP_HP_is_value:
- return "DW_OP_HP_is_value";
- case DW_OP_HP_fltconst4:
- return "DW_OP_HP_fltconst4";
- case DW_OP_HP_fltconst8:
- return "DW_OP_HP_fltconst8";
- case DW_OP_HP_mod_range:
- return "DW_OP_HP_mod_range";
- case DW_OP_HP_unmod_range:
- return "DW_OP_HP_unmod_range";
- case DW_OP_HP_tls:
- return "DW_OP_HP_tls";
default:
- return "OP_<unknown>";
+ return def ? "OP_<unknown>" : NULL;
}
}
return "DW_ATE_unsigned_fixed";
case DW_ATE_decimal_float:
return "DW_ATE_decimal_float";
+ /* DWARF 4. */
+ case DW_ATE_UTF:
+ return "DW_ATE_UTF";
/* HP extensions. */
case DW_ATE_HP_float80:
return "DW_ATE_HP_float80";
case DW_FORM_ref_addr:
case DW_FORM_addr:
fprintf_unfiltered (f, "address: ");
- fputs_filtered (paddress (DW_ADDR (&die->attrs[i])), f);
+ fputs_filtered (hex_string (DW_ADDR (&die->attrs[i])), f);
break;
case DW_FORM_block2:
case DW_FORM_block4:
case DW_FORM_block1:
fprintf_unfiltered (f, "block: size %d", DW_BLOCK (&die->attrs[i])->size);
break;
+ case DW_FORM_exprloc:
+ fprintf_unfiltered (f, "expression: size %u",
+ DW_BLOCK (&die->attrs[i])->size);
+ break;
case DW_FORM_ref1:
case DW_FORM_ref2:
case DW_FORM_ref4:
case DW_FORM_data8:
case DW_FORM_udata:
case DW_FORM_sdata:
- fprintf_unfiltered (f, "constant: %ld", DW_UNSND (&die->attrs[i]));
+ fprintf_unfiltered (f, "constant: %s",
+ pulongest (DW_UNSND (&die->attrs[i])));
+ break;
+ case DW_FORM_sec_offset:
+ fprintf_unfiltered (f, "section offset: %s",
+ pulongest (DW_UNSND (&die->attrs[i])));
+ break;
+ case DW_FORM_sig8:
+ if (DW_SIGNATURED_TYPE (&die->attrs[i]) != NULL)
+ fprintf_unfiltered (f, "signatured type, offset: 0x%x",
+ DW_SIGNATURED_TYPE (&die->attrs[i])->offset);
+ else
+ fprintf_unfiltered (f, "signatured type, offset: unknown");
break;
case DW_FORM_string:
case DW_FORM_strp:
- case GDB_FORM_cached_string:
- fprintf_unfiltered (f, "string: \"%s\"",
+ fprintf_unfiltered (f, "string: \"%s\" (%s canonicalized)",
DW_STRING (&die->attrs[i])
- ? DW_STRING (&die->attrs[i]) : "");
+ ? DW_STRING (&die->attrs[i]) : "",
+ DW_STRING_IS_CANONICAL (&die->attrs[i]) ? "is" : "not");
break;
case DW_FORM_flag:
if (DW_UNSND (&die->attrs[i]))
else
fprintf_unfiltered (f, "flag: FALSE");
break;
+ case DW_FORM_flag_present:
+ fprintf_unfiltered (f, "flag: TRUE");
+ break;
case DW_FORM_indirect:
/* the reader will have reduced the indirect form to
the "base form" so this form should not occur */
*slot = die;
}
-static unsigned int
-dwarf2_get_ref_die_offset (struct attribute *attr)
+static int
+is_ref_attr (struct attribute *attr)
{
- unsigned int result = 0;
-
switch (attr->form)
{
case DW_FORM_ref_addr:
case DW_FORM_ref4:
case DW_FORM_ref8:
case DW_FORM_ref_udata:
- result = DW_ADDR (attr);
- break;
+ return 1;
default:
- complaint (&symfile_complaints,
- _("unsupported die ref attribute form: '%s'"),
- dwarf_form_name (attr->form));
+ return 0;
}
- return result;
}
-/* Return the constant value held by the given attribute. Return -1
- if the value held by the attribute is not constant. */
+static unsigned int
+dwarf2_get_ref_die_offset (struct attribute *attr)
+{
+ if (is_ref_attr (attr))
+ return DW_ADDR (attr);
-static int
+ complaint (&symfile_complaints,
+ _("unsupported die ref attribute form: '%s'"),
+ dwarf_form_name (attr->form));
+ return 0;
+}
+
+/* Return the constant value held by ATTR. Return DEFAULT_VALUE if
+ * the value held by the attribute is not constant. */
+
+static LONGEST
dwarf2_get_attr_constant_value (struct attribute *attr, int default_value)
{
if (attr->form == DW_FORM_sdata)
}
/* THIS_CU has a reference to PER_CU. If necessary, load the new compilation
- unit and add it to our queue. */
+ unit and add it to our queue.
+ The result is non-zero if PER_CU was queued, otherwise the result is zero
+ meaning either PER_CU is already queued or it is already loaded. */
-static void
+static int
maybe_queue_comp_unit (struct dwarf2_cu *this_cu,
struct dwarf2_per_cu_data *per_cu)
{
/* If it's already on the queue, we have nothing to do. */
if (per_cu->queued)
- return;
+ return 0;
/* If the compilation unit is already loaded, just mark it as
used. */
if (per_cu->cu != NULL)
{
per_cu->cu->last_used = 0;
- return;
+ return 0;
}
/* Add it to the queue. */
queue_comp_unit (per_cu, this_cu->objfile);
+
+ return 1;
}
-/* Follow reference attribute ATTR of SRC_DIE.
+/* Follow reference or signature attribute ATTR of SRC_DIE.
On entry *REF_CU is the CU of SRC_DIE.
On exit *REF_CU is the CU of the result. */
static struct die_info *
-follow_die_ref (struct die_info *src_die, struct attribute *attr,
- struct dwarf2_cu **ref_cu)
+follow_die_ref_or_sig (struct die_info *src_die, struct attribute *attr,
+ struct dwarf2_cu **ref_cu)
{
struct die_info *die;
- unsigned int offset;
+
+ if (is_ref_attr (attr))
+ die = follow_die_ref (src_die, attr, ref_cu);
+ else if (attr->form == DW_FORM_sig8)
+ die = follow_die_sig (src_die, attr, ref_cu);
+ else
+ {
+ dump_die_for_error (src_die);
+ error (_("Dwarf Error: Expected reference attribute [in module %s]"),
+ (*ref_cu)->objfile->name);
+ }
+
+ return die;
+}
+
+/* Follow reference OFFSET.
+ On entry *REF_CU is the CU of source DIE referencing OFFSET.
+ On exit *REF_CU is the CU of the result. */
+
+static struct die_info *
+follow_die_offset (unsigned int offset, struct dwarf2_cu **ref_cu)
+{
struct die_info temp_die;
struct dwarf2_cu *target_cu, *cu = *ref_cu;
- offset = dwarf2_get_ref_die_offset (attr);
+ gdb_assert (cu->per_cu != NULL);
- if (! offset_in_cu_p (&cu->header, offset))
+ if (cu->per_cu->from_debug_types)
+ {
+ /* .debug_types CUs cannot reference anything outside their CU.
+ If they need to, they have to reference a signatured type via
+ DW_FORM_sig8. */
+ if (! offset_in_cu_p (&cu->header, offset))
+ return NULL;
+ target_cu = cu;
+ }
+ else if (! offset_in_cu_p (&cu->header, offset))
{
struct dwarf2_per_cu_data *per_cu;
+
per_cu = dwarf2_find_containing_comp_unit (offset, cu->objfile);
/* If necessary, add it to the queue and load its DIEs. */
- maybe_queue_comp_unit (cu, per_cu);
+ if (maybe_queue_comp_unit (cu, per_cu))
+ load_full_comp_unit (per_cu, cu->objfile);
target_cu = per_cu->cu;
}
*ref_cu = target_cu;
temp_die.offset = offset;
- die = htab_find_with_hash (target_cu->die_hash, &temp_die, offset);
+ return htab_find_with_hash (target_cu->die_hash, &temp_die, offset);
+}
+
+/* Follow reference attribute ATTR of SRC_DIE.
+ On entry *REF_CU is the CU of SRC_DIE.
+ On exit *REF_CU is the CU of the result. */
+
+static struct die_info *
+follow_die_ref (struct die_info *src_die, struct attribute *attr,
+ struct dwarf2_cu **ref_cu)
+{
+ unsigned int offset = dwarf2_get_ref_die_offset (attr);
+ struct dwarf2_cu *cu = *ref_cu;
+ struct die_info *die;
+
+ die = follow_die_offset (offset, ref_cu);
+ if (!die)
+ error (_("Dwarf Error: Cannot find DIE at 0x%x referenced from DIE "
+ "at 0x%x [in module %s]"),
+ offset, src_die->offset, cu->objfile->name);
+
+ return die;
+}
+
+/* Return DWARF block and its CU referenced by OFFSET at PER_CU. Returned
+ value is intended for DW_OP_call*. */
+
+struct dwarf2_locexpr_baton
+dwarf2_fetch_die_location_block (unsigned int offset,
+ struct dwarf2_per_cu_data *per_cu)
+{
+ struct dwarf2_cu *cu = per_cu->cu;
+ struct die_info *die;
+ struct attribute *attr;
+ struct dwarf2_locexpr_baton retval;
+
+ die = follow_die_offset (offset, &cu);
+ if (!die)
+ error (_("Dwarf Error: Cannot find DIE at 0x%x referenced in module %s"),
+ offset, per_cu->cu->objfile->name);
+
+ attr = dwarf2_attr (die, DW_AT_location, cu);
+ if (!attr)
+ {
+ /* DWARF: "If there is no such attribute, then there is no effect.". */
+
+ retval.data = NULL;
+ retval.size = 0;
+ }
+ else
+ {
+ if (!attr_form_is_block (attr))
+ error (_("Dwarf Error: DIE at 0x%x referenced in module %s "
+ "is neither DW_FORM_block* nor DW_FORM_exprloc"),
+ offset, per_cu->cu->objfile->name);
+
+ retval.data = DW_BLOCK (attr)->data;
+ retval.size = DW_BLOCK (attr)->size;
+ }
+ retval.per_cu = cu->per_cu;
+ return retval;
+}
+
+/* Follow the signature attribute ATTR in SRC_DIE.
+ On entry *REF_CU is the CU of SRC_DIE.
+ On exit *REF_CU is the CU of the result. */
+
+static struct die_info *
+follow_die_sig (struct die_info *src_die, struct attribute *attr,
+ struct dwarf2_cu **ref_cu)
+{
+ struct objfile *objfile = (*ref_cu)->objfile;
+ struct die_info temp_die;
+ struct signatured_type *sig_type = DW_SIGNATURED_TYPE (attr);
+ struct dwarf2_cu *sig_cu;
+ struct die_info *die;
+
+ /* sig_type will be NULL if the signatured type is missing from
+ the debug info. */
+ if (sig_type == NULL)
+ error (_("Dwarf Error: Cannot find signatured DIE referenced from DIE "
+ "at 0x%x [in module %s]"),
+ src_die->offset, objfile->name);
+
+ /* If necessary, add it to the queue and load its DIEs. */
+
+ if (maybe_queue_comp_unit (*ref_cu, &sig_type->per_cu))
+ read_signatured_type (objfile, sig_type);
+
+ gdb_assert (sig_type->per_cu.cu != NULL);
+
+ sig_cu = sig_type->per_cu.cu;
+ temp_die.offset = sig_cu->header.offset + sig_type->type_offset;
+ die = htab_find_with_hash (sig_cu->die_hash, &temp_die, temp_die.offset);
if (die)
- return die;
+ {
+ *ref_cu = sig_cu;
+ return die;
+ }
+
+ error (_("Dwarf Error: Cannot find signatured DIE at 0x%x referenced from DIE "
+ "at 0x%x [in module %s]"),
+ sig_type->type_offset, src_die->offset, objfile->name);
+}
+
+/* Given an offset of a signatured type, return its signatured_type. */
+
+static struct signatured_type *
+lookup_signatured_type_at_offset (struct objfile *objfile, unsigned int offset)
+{
+ gdb_byte *info_ptr = dwarf2_per_objfile->types.buffer + offset;
+ unsigned int length, initial_length_size;
+ unsigned int sig_offset;
+ struct signatured_type find_entry, *type_sig;
+
+ length = read_initial_length (objfile->obfd, info_ptr, &initial_length_size);
+ sig_offset = (initial_length_size
+ + 2 /*version*/
+ + (initial_length_size == 4 ? 4 : 8) /*debug_abbrev_offset*/
+ + 1 /*address_size*/);
+ find_entry.signature = bfd_get_64 (objfile->obfd, info_ptr + sig_offset);
+ type_sig = htab_find (dwarf2_per_objfile->signatured_types, &find_entry);
+
+ /* This is only used to lookup previously recorded types.
+ If we didn't find it, it's our bug. */
+ gdb_assert (type_sig != NULL);
+ gdb_assert (offset == type_sig->offset);
+
+ return type_sig;
+}
+
+/* Read in signatured type at OFFSET and build its CU and die(s). */
+
+static void
+read_signatured_type_at_offset (struct objfile *objfile,
+ unsigned int offset)
+{
+ struct signatured_type *type_sig;
+
+ dwarf2_read_section (objfile, &dwarf2_per_objfile->types);
+
+ /* We have the section offset, but we need the signature to do the
+ hash table lookup. */
+ type_sig = lookup_signatured_type_at_offset (objfile, offset);
+
+ gdb_assert (type_sig->per_cu.cu == NULL);
+
+ read_signatured_type (objfile, type_sig);
+
+ gdb_assert (type_sig->per_cu.cu != NULL);
+}
+
+/* Read in a signatured type and build its CU and DIEs. */
+
+static void
+read_signatured_type (struct objfile *objfile,
+ struct signatured_type *type_sig)
+{
+ gdb_byte *types_ptr = dwarf2_per_objfile->types.buffer + type_sig->offset;
+ struct die_reader_specs reader_specs;
+ struct dwarf2_cu *cu;
+ ULONGEST signature;
+ struct cleanup *back_to, *free_cu_cleanup;
+ struct attribute *attr;
+
+ gdb_assert (type_sig->per_cu.cu == NULL);
+
+ cu = xmalloc (sizeof (struct dwarf2_cu));
+ memset (cu, 0, sizeof (struct dwarf2_cu));
+ obstack_init (&cu->comp_unit_obstack);
+ cu->objfile = objfile;
+ type_sig->per_cu.cu = cu;
+ cu->per_cu = &type_sig->per_cu;
+
+ /* If an error occurs while loading, release our storage. */
+ free_cu_cleanup = make_cleanup (free_one_comp_unit, cu);
+
+ types_ptr = read_type_comp_unit_head (&cu->header, &signature,
+ types_ptr, objfile->obfd);
+ gdb_assert (signature == type_sig->signature);
+
+ cu->die_hash
+ = htab_create_alloc_ex (cu->header.length / 12,
+ die_hash,
+ die_eq,
+ NULL,
+ &cu->comp_unit_obstack,
+ hashtab_obstack_allocate,
+ dummy_obstack_deallocate);
+
+ dwarf2_read_abbrevs (cu->objfile->obfd, cu);
+ back_to = make_cleanup (dwarf2_free_abbrev_table, cu);
+
+ init_cu_die_reader (&reader_specs, cu);
+
+ cu->dies = read_die_and_children (&reader_specs, types_ptr, &types_ptr,
+ NULL /*parent*/);
+
+ /* We try not to read any attributes in this function, because not
+ all objfiles needed for references have been loaded yet, and symbol
+ table processing isn't initialized. But we have to set the CU language,
+ or we won't be able to build types correctly. */
+ attr = dwarf2_attr (cu->dies, DW_AT_language, cu);
+ if (attr)
+ set_cu_language (DW_UNSND (attr), cu);
+ else
+ set_cu_language (language_minimal, cu);
+
+ do_cleanups (back_to);
- error (_("Dwarf Error: Cannot find DIE at 0x%lx referenced from DIE "
- "at 0x%lx [in module %s]"),
- (long) offset, (long) src_die->offset, cu->objfile->name);
+ /* We've successfully allocated this compilation unit. Let our caller
+ clean it up when finished with it. */
+ discard_cleanups (free_cu_cleanup);
+
+ type_sig->per_cu.cu->read_in_chain = dwarf2_per_objfile->read_in_chain;
+ dwarf2_per_objfile->read_in_chain = &type_sig->per_cu;
}
/* Decode simple location descriptions.
decode_locdesc (struct dwarf_block *blk, struct dwarf2_cu *cu)
{
struct objfile *objfile = cu->objfile;
- struct comp_unit_head *cu_header = &cu->header;
int i;
int size = blk->size;
gdb_byte *data = blk->data;
default:
complaint (&symfile_complaints, _("unsupported stack op: '%s'"),
- dwarf_stack_op_name (op));
+ dwarf_stack_op_name (op, 1));
return (stack[stacki]);
}
}
if (1 <= file && file <= lh->num_file_names)
{
struct file_entry *fe = &lh->file_names[file - 1];
-
+
if (IS_ABSOLUTE_PATH (fe->name))
return xstrdup (fe->name);
else
record the macro definitions made in the file, even if we
won't be able to find the file by name. */
char fake_name[80];
+
sprintf (fake_name, "<bad macro file number %d>", file);
- complaint (&symfile_complaints,
+ complaint (&symfile_complaints,
_("bad file number in macro information (%d)"),
file);
current_file = macro_include (current_file, line, full_name);
xfree (full_name);
-
+
return current_file;
}
copy_string (const char *buf, int len)
{
char *s = xmalloc (len + 1);
+
memcpy (s, buf, len);
s[len] = '\0';
-
return s;
}
The Dwarf 2 spec says that an object-like macro's name is always
followed by a space, but versions of GCC around March 2002 omit
- the space when the macro's definition is the empty string.
+ the space when the macro's definition is the empty string.
The Dwarf 2 spec says that there should be no spaces between the
formal arguments in a function-like macro's formal argument list,
dwarf2_macro_malformed_definition_complaint (body);
replacement = body + name_len;
}
-
+
macro_define_object (file, line, name, replacement);
xfree (name);
if (*p == ' ')
/* Perfectly formed definition, no complaints. */
macro_define_function (file, line, name,
- argc, (const char **) argv,
+ argc, (const char **) argv,
p + 1);
else if (*p == '\0')
{
/* Complain, but do define it. */
dwarf2_macro_malformed_definition_complaint (body);
macro_define_function (file, line, name,
- argc, (const char **) argv,
+ argc, (const char **) argv,
p);
}
else
enum dwarf_macinfo_record_type macinfo_type;
int at_commandline;
+ dwarf2_read_section (dwarf2_per_objfile->objfile,
+ &dwarf2_per_objfile->macinfo);
if (dwarf2_per_objfile->macinfo.buffer == NULL)
{
complaint (&symfile_complaints, _("missing .debug_macinfo section"));
complaint (&symfile_complaints,
_("debug info with no main source gives macro %s "
"on line %d: %s"),
- macinfo_type ==
- DW_MACINFO_define ? _("definition") : macinfo_type ==
- DW_MACINFO_undef ? _("undefinition") :
- "something-or-other", line, body);
+ macinfo_type == DW_MACINFO_define ?
+ _("definition") :
+ macinfo_type == DW_MACINFO_undef ?
+ _("undefinition") :
+ _("something-or-other"), line, body);
break;
}
if ((line == 0 && !at_commandline) || (line != 0 && at_commandline))
complaint (&symfile_complaints,
_("debug info gives %s macro %s with %s line %d: %s"),
at_commandline ? _("command-line") : _("in-file"),
- macinfo_type ==
- DW_MACINFO_define ? _("definition") : macinfo_type ==
- DW_MACINFO_undef ? _("undefinition") :
- "something-or-other",
+ macinfo_type == DW_MACINFO_define ?
+ _("definition") :
+ macinfo_type == DW_MACINFO_undef ?
+ _("undefinition") :
+ _("something-or-other"),
line == 0 ? _("zero") : _("non-zero"), line, body);
if (macinfo_type == DW_MACINFO_define)
attr->form == DW_FORM_block1
|| attr->form == DW_FORM_block2
|| attr->form == DW_FORM_block4
- || attr->form == DW_FORM_block);
+ || attr->form == DW_FORM_block
+ || attr->form == DW_FORM_exprloc);
}
/* Return non-zero if ATTR's value is a section offset --- classes
attr_form_is_section_offset (struct attribute *attr)
{
return (attr->form == DW_FORM_data4
- || attr->form == DW_FORM_data8);
+ || attr->form == DW_FORM_data8
+ || attr->form == DW_FORM_sec_offset);
}
baton->per_cu = cu->per_cu;
gdb_assert (baton->per_cu);
+ dwarf2_read_section (dwarf2_per_objfile->objfile,
+ &dwarf2_per_objfile->loc);
+
/* We don't know how long the location list is, but make sure we
don't run off the edge of the section. */
baton->size = dwarf2_per_objfile->loc.size - DW_UNSND (attr);
baton->size = 0;
baton->data = NULL;
}
-
+
SYMBOL_COMPUTED_OPS (sym) = &dwarf2_locexpr_funcs;
SYMBOL_LOCATION_BATON (sym) = baton;
}
struct dwarf2_per_objfile *per_objfile
= objfile_data (objfile, dwarf2_objfile_data_key);
gdb_byte *info_ptr = per_objfile->info.buffer + per_cu->offset;
-
struct comp_unit_head cu_header;
+
memset (&cu_header, 0, sizeof cu_header);
read_comp_unit_head (&cu_header, info_ptr, objfile->obfd);
return cu_header.addr_size;
}
}
-/* Locate the compilation unit from CU's objfile which contains the
- DIE at OFFSET. Raises an error on failure. */
+/* Return the offset size given in the compilation unit header for CU. */
+
+int
+dwarf2_per_cu_offset_size (struct dwarf2_per_cu_data *per_cu)
+{
+ if (per_cu->cu)
+ return per_cu->cu->header.offset_size;
+ else
+ {
+ /* If the CU is not currently read in, we re-read its header. */
+ struct objfile *objfile = per_cu->psymtab->objfile;
+ struct dwarf2_per_objfile *per_objfile
+ = objfile_data (objfile, dwarf2_objfile_data_key);
+ gdb_byte *info_ptr = per_objfile->info.buffer + per_cu->offset;
+ struct comp_unit_head cu_header;
+
+ memset (&cu_header, 0, sizeof cu_header);
+ read_comp_unit_head (&cu_header, info_ptr, objfile->obfd);
+ return cu_header.offset_size;
+ }
+}
+
+/* Locate the .debug_info compilation unit from CU's objfile which contains
+ the DIE at OFFSET. Raises an error on failure. */
static struct dwarf2_per_cu_data *
dwarf2_find_containing_comp_unit (unsigned int offset,
while (high > low)
{
int mid = low + (high - low) / 2;
+
if (dwarf2_per_objfile->all_comp_units[mid]->offset >= offset)
high = mid;
else
dwarf2_find_comp_unit (unsigned int offset, struct objfile *objfile)
{
struct dwarf2_per_cu_data *this_cu;
+
this_cu = dwarf2_find_containing_comp_unit (offset, objfile);
if (this_cu->offset != offset)
error (_("no compilation unit with offset %u."), offset);
return this_cu;
}
+/* Malloc space for a dwarf2_cu for OBJFILE and initialize it. */
+
+static struct dwarf2_cu *
+alloc_one_comp_unit (struct objfile *objfile)
+{
+ struct dwarf2_cu *cu = xcalloc (1, sizeof (struct dwarf2_cu));
+ cu->objfile = objfile;
+ obstack_init (&cu->comp_unit_obstack);
+ return cu;
+}
+
/* Release one cached compilation unit, CU. We unlink it from the tree
of compilation units, but we don't remove it from the read_in_chain;
- the caller is responsible for that. */
+ the caller is responsible for that.
+ NOTE: DATA is a void * because this function is also used as a
+ cleanup routine. */
static void
free_one_comp_unit (void *data)
offset_and_type_hash (const void *item)
{
const struct dwarf2_offset_and_type *ofs = item;
+
return ofs->offset;
}
{
const struct dwarf2_offset_and_type *ofs_lhs = item_lhs;
const struct dwarf2_offset_and_type *ofs_rhs = item_rhs;
+
return ofs_lhs->offset == ofs_rhs->offset;
}
/* Set the type associated with DIE to TYPE. Save it in CU's hash
- table if necessary. For convenience, return TYPE. */
+ table if necessary. For convenience, return TYPE.
+
+ The DIEs reading must have careful ordering to:
+ * Not cause infite loops trying to read in DIEs as a prerequisite for
+ reading current DIE.
+ * Not trying to dereference contents of still incompletely read in types
+ while reading in other DIEs.
+ * Enable referencing still incompletely read in types just by a pointer to
+ the type without accessing its fields.
+
+ Therefore caller should follow these rules:
+ * Try to fetch any prerequisite types we may need to build this DIE type
+ before building the type and calling set_die_type.
+ * After building typer call set_die_type for current DIE as soon as
+ possible before fetching more types to complete the current type.
+ * Make the type as complete as possible before fetching more types. */
static struct type *
set_die_type (struct die_info *die, struct type *type, struct dwarf2_cu *cu)
{
struct dwarf2_offset_and_type **slot, ofs;
+ /* For Ada types, make sure that the gnat-specific data is always
+ initialized (if not already set). There are a few types where
+ we should not be doing so, because the type-specific area is
+ already used to hold some other piece of info (eg: TYPE_CODE_FLT
+ where the type-specific area is used to store the floatformat).
+ But this is not a problem, because the gnat-specific information
+ is actually not needed for these types. */
+ if (need_gnat_info (cu)
+ && TYPE_CODE (type) != TYPE_CODE_FUNC
+ && TYPE_CODE (type) != TYPE_CODE_FLT
+ && !HAVE_GNAT_AUX_INFO (type))
+ INIT_GNAT_SPECIFIC (type);
+
if (cu->type_hash == NULL)
{
gdb_assert (cu->per_cu != NULL);
ofs.type = type;
slot = (struct dwarf2_offset_and_type **)
htab_find_slot_with_hash (cu->type_hash, &ofs, ofs.offset, INSERT);
+ if (*slot)
+ complaint (&symfile_complaints,
+ _("A problem internal to GDB: DIE 0x%x has type already set"),
+ die->offset);
*slot = obstack_alloc (&cu->objfile->objfile_obstack, sizeof (**slot));
**slot = ofs;
return type;
partial_die_hash (const void *item)
{
const struct partial_die_info *part_die = item;
+
return part_die->offset;
}
{
const struct partial_die_info *part_die_lhs = item_lhs;
const struct partial_die_info *part_die_rhs = item_rhs;
+
return part_die_lhs->offset == part_die_rhs->offset;
}
static void
show_dwarf2_cmd (char *args, int from_tty)
-{
+{
cmd_show_list (show_dwarf2_cmdlist, from_tty, "");
}
intptr_t begin = (intptr_t) info->buffer;
intptr_t map_begin = begin & ~(pagesize - 1);
size_t map_length = info->size + begin - map_begin;
+
gdb_assert (munmap ((void *) map_begin, map_length) == 0);
#else
/* Without HAVE_MMAP, we should never be here to begin with. */
/* munmap debug sections for OBJFILE, if necessary. */
static void
-dwarf2_per_objfile_cleanup (struct objfile *objfile, void *d)
+dwarf2_per_objfile_free (struct objfile *objfile, void *d)
{
struct dwarf2_per_objfile *data = d;
+
munmap_section_buffer (&data->info);
munmap_section_buffer (&data->abbrev);
munmap_section_buffer (&data->line);
munmap_section_buffer (&data->eh_frame);
}
+int dwarf2_always_disassemble;
+
+static void
+show_dwarf2_always_disassemble (struct ui_file *file, int from_tty,
+ struct cmd_list_element *c, const char *value)
+{
+ fprintf_filtered (file, _("\
+Whether to always disassemble DWARF expressions is %s.\n"),
+ value);
+}
+
void _initialize_dwarf2_read (void);
void
_initialize_dwarf2_read (void)
{
dwarf2_objfile_data_key
- = register_objfile_data_with_cleanup (dwarf2_per_objfile_cleanup);
+ = register_objfile_data_with_cleanup (NULL, dwarf2_per_objfile_free);
add_prefix_cmd ("dwarf2", class_maintenance, set_dwarf2_cmd, _("\
Set DWARF 2 specific variables.\n\
&set_dwarf2_cmdlist,
&show_dwarf2_cmdlist);
+ add_setshow_boolean_cmd ("always-disassemble", class_obscure,
+ &dwarf2_always_disassemble, _("\
+Set whether `info address' always disassembles DWARF expressions."), _("\
+Show whether `info address' always disassembles DWARF expressions."), _("\
+When enabled, DWARF expressions are always printed in an assembly-like\n\
+syntax. When disabled, expressions will be printed in a more\n\
+conversational style, when possible."),
+ NULL,
+ show_dwarf2_always_disassemble,
+ &set_dwarf2_cmdlist,
+ &show_dwarf2_cmdlist);
+
add_setshow_zinteger_cmd ("dwarf2-die", no_class, &dwarf2_die_debug, _("\
Set debugging of the dwarf2 DIE reader."), _("\
Show debugging of the dwarf2 DIE reader."), _("\
projects / deliverable / binutils-gdb.git / blobdiff