/* DWARF 2 debugging format support for GDB.
- Copyright 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001
+ Copyright 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003
Free Software Foundation, Inc.
Adapted by Gary Funck (gary@intrepid.com), Intrepid Technology,
#include "demangle.h"
#include "expression.h"
#include "filenames.h" /* for DOSish file names */
-
+#include "macrotab.h"
#include "language.h"
#include "complaints.h"
#include "bcache.h"
+#include "dwarf2expr.h"
+#include "dwarf2loc.h"
+#include "cp-support.h"
+
#include <fcntl.h>
#include "gdb_string.h"
#include "gdb_assert.h"
static file_ptr dwarf_loc_offset;
static file_ptr dwarf_macinfo_offset;
static file_ptr dwarf_str_offset;
+static file_ptr dwarf_ranges_offset;
+file_ptr dwarf_frame_offset;
+file_ptr dwarf_eh_frame_offset;
static unsigned int dwarf_info_size;
static unsigned int dwarf_abbrev_size;
static unsigned int dwarf_loc_size;
static unsigned int dwarf_macinfo_size;
static unsigned int dwarf_str_size;
+static unsigned int dwarf_ranges_size;
+unsigned int dwarf_frame_size;
+unsigned int dwarf_eh_frame_size;
+
+static asection *dwarf_info_section;
+static asection *dwarf_abbrev_section;
+static asection *dwarf_line_section;
+static asection *dwarf_pubnames_section;
+static asection *dwarf_aranges_section;
+static asection *dwarf_loc_section;
+static asection *dwarf_macinfo_section;
+static asection *dwarf_str_section;
+static asection *dwarf_ranges_section;
+asection *dwarf_frame_section;
+asection *dwarf_eh_frame_section;
/* names of the debugging sections */
#define LOC_SECTION ".debug_loc"
#define MACINFO_SECTION ".debug_macinfo"
#define STR_SECTION ".debug_str"
+#define RANGES_SECTION ".debug_ranges"
+#define FRAME_SECTION ".debug_frame"
+#define EH_FRAME_SECTION ".eh_frame"
/* local data types */
+/* We hold several abbreviation tables in memory at the same time. */
+#ifndef ABBREV_HASH_SIZE
+#define ABBREV_HASH_SIZE 121
+#endif
+
/* The data in a compilation unit header, after target2host
translation, looks like this. */
struct comp_unit_head
unsigned int offset_size; /* size of file offsets; either 4 or 8 */
unsigned int initial_length_size; /* size of the length field; either
4 or 12 */
+
+ /* Offset to the first byte of this compilation unit header in the
+ * .debug_info section, for resolving relative reference dies. */
+
+ unsigned int offset;
+
+ /* Pointer to this compilation unit header in the .debug_info
+ * section */
+
+ char *cu_head_ptr;
+
+ /* Pointer to the first die of this compilatio unit. This will
+ * be the first byte following the compilation unit header. */
+
+ char *first_die_ptr;
+
+ /* Pointer to the next compilation unit header in the program. */
+
+ struct comp_unit_head *next;
+
+ /* DWARF abbreviation table associated with this compilation unit */
+
+ struct abbrev_info *dwarf2_abbrevs[ABBREV_HASH_SIZE];
+
+ /* Base address of this compilation unit. */
+
+ CORE_ADDR base_address;
+
+ /* Non-zero if base_address has been set. */
+
+ int base_known;
};
-/* The data in the .debug_line statement prologue looks like this. */
-struct line_head
+/* 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. */
+struct line_header
+{
+ unsigned int total_length;
+ unsigned short version;
+ unsigned int header_length;
+ unsigned char minimum_instruction_length;
+ unsigned char default_is_stmt;
+ int line_base;
+ unsigned char line_range;
+ unsigned char opcode_base;
+
+ /* standard_opcode_lengths[i] is the number of operands for the
+ standard opcode whose value is i. This means that
+ standard_opcode_lengths[0] is unused, and the last meaningful
+ element is standard_opcode_lengths[opcode_base - 1]. */
+ unsigned char *standard_opcode_lengths;
+
+ /* The include_directories table. NOTE! These strings are not
+ allocated with xmalloc; instead, they are pointers into
+ debug_line_buffer. If you try to free them, `free' will get
+ indigestion. */
+ unsigned int num_include_dirs, include_dirs_size;
+ char **include_dirs;
+
+ /* The file_names table. NOTE! These strings are not allocated
+ with xmalloc; instead, they are pointers into debug_line_buffer.
+ Don't try to free them directly. */
+ unsigned int num_file_names, file_names_size;
+ struct file_entry
{
- unsigned int total_length;
- unsigned short version;
- unsigned int prologue_length;
- unsigned char minimum_instruction_length;
- unsigned char default_is_stmt;
- int line_base;
- unsigned char line_range;
- unsigned char opcode_base;
- unsigned char *standard_opcode_lengths;
- };
+ char *name;
+ unsigned int dir_index;
+ unsigned int mod_time;
+ unsigned int length;
+ } *file_names;
+
+ /* The start and end of the statement program following this
+ header. These point into dwarf_line_buffer. */
+ char *statement_program_start, *statement_program_end;
+};
/* When we construct a partial symbol table entry we only
need this much information. */
u;
};
+struct function_range
+{
+ const char *name;
+ CORE_ADDR lowpc, highpc;
+ int seen_line;
+ struct function_range *next;
+};
+
+static struct function_range *cu_first_fn, *cu_last_fn, *cu_cached_fn;
+
/* Get at parts of an attribute structure */
#define DW_STRING(attr) ((attr)->u.str)
char *data;
};
-/* We only hold one compilation unit's abbrevs in
- memory at any one time. */
-#ifndef ABBREV_HASH_SIZE
-#define ABBREV_HASH_SIZE 121
-#endif
#ifndef ATTR_ALLOC_CHUNK
#define ATTR_ALLOC_CHUNK 4
#endif
-static struct abbrev_info *dwarf2_abbrevs[ABBREV_HASH_SIZE];
-
/* A hash table of die offsets for following references. */
#ifndef REF_HASH_SIZE
#define REF_HASH_SIZE 1021
static char *dwarf_abbrev_buffer;
static char *dwarf_line_buffer;
static char *dwarf_str_buffer;
+static char *dwarf_macinfo_buffer;
+static char *dwarf_ranges_buffer;
+static char *dwarf_loc_buffer;
/* A zeroed version of a partial die for initialization purposes. */
static struct partial_die_info zeroed_partial_die;
this function, so we can't say
which register it's relative to;
use LOC_LOCAL. */
+static int is_thread_local; /* Variable is at a constant offset in the
+ thread-local storage block for the
+ current thread and the dynamic linker
+ module containing this expression.
+ decode_locdesc returns the offset from
+ that base. */
/* DW_AT_frame_base values for the current function.
frame_base_reg is -1 if DW_AT_frame_base is missing, otherwise it
char *dwarf_line_buffer;
+ /* Size of dwarf_line_buffer, in bytes. */
+
+ unsigned int dwarf_line_size;
+
/* Pointer to start of dwarf string buffer for the objfile. */
char *dwarf_str_buffer;
/* Size of dwarf string section for the objfile. */
unsigned int dwarf_str_size;
+
+ /* Pointer to start of dwarf macro buffer for the objfile. */
+
+ char *dwarf_macinfo_buffer;
+
+ /* Size of dwarf macinfo section for the objfile. */
+
+ unsigned int dwarf_macinfo_size;
+
+ /* Pointer to start of dwarf ranges buffer for the objfile. */
+
+ char *dwarf_ranges_buffer;
+
+ /* Size of dwarf ranges buffer for the objfile. */
+
+ unsigned int dwarf_ranges_size;
+
+ /* Pointer to start of dwarf locations buffer for the objfile. */
+
+ char *dwarf_loc_buffer;
+
+ /* Size of dwarf locations buffer for the objfile. */
+
+ unsigned int dwarf_loc_size;
};
#define PST_PRIVATE(p) ((struct dwarf2_pinfo *)(p)->read_symtab_private)
#define DWARF_ABBREV_BUFFER(p) (PST_PRIVATE(p)->dwarf_abbrev_buffer)
#define DWARF_ABBREV_SIZE(p) (PST_PRIVATE(p)->dwarf_abbrev_size)
#define DWARF_LINE_BUFFER(p) (PST_PRIVATE(p)->dwarf_line_buffer)
+#define DWARF_LINE_SIZE(p) (PST_PRIVATE(p)->dwarf_line_size)
#define DWARF_STR_BUFFER(p) (PST_PRIVATE(p)->dwarf_str_buffer)
#define DWARF_STR_SIZE(p) (PST_PRIVATE(p)->dwarf_str_size)
+#define DWARF_MACINFO_BUFFER(p) (PST_PRIVATE(p)->dwarf_macinfo_buffer)
+#define DWARF_MACINFO_SIZE(p) (PST_PRIVATE(p)->dwarf_macinfo_size)
+#define DWARF_RANGES_BUFFER(p) (PST_PRIVATE(p)->dwarf_ranges_buffer)
+#define DWARF_RANGES_SIZE(p) (PST_PRIVATE(p)->dwarf_ranges_size)
+#define DWARF_LOC_BUFFER(p) (PST_PRIVATE(p)->dwarf_loc_buffer)
+#define DWARF_LOC_SIZE(p) (PST_PRIVATE(p)->dwarf_loc_size)
/* Maintain an array of referenced fundamental types for the current
compilation unit being read. For DWARF version 1, we have to construct
int nfnfields;
};
-/* FIXME: Kludge to mark a varargs function type for C++ member function
- argument processing. */
-#define TYPE_FLAG_VARARGS (1 << 10)
-
-/* Dwarf2 has no clean way to discern C++ static and non-static member
- functions. G++ helps GDB by marking the first parameter for non-static
- member functions (which is the this pointer) as artificial.
- We pass this information between dwarf2_add_member_fn and
- read_subroutine_type via TYPE_FIELD_ARTIFICIAL. */
-#define TYPE_FIELD_ARTIFICIAL TYPE_FIELD_BITPOS
-
/* Various complaints about symbol reading that don't abort the process */
-static struct complaint dwarf2_const_ignored =
-{
- "type qualifier 'const' ignored", 0, 0
-};
-static struct complaint dwarf2_volatile_ignored =
-{
- "type qualifier 'volatile' ignored", 0, 0
-};
-static struct complaint dwarf2_non_const_array_bound_ignored =
-{
- "non-constant array bounds form '%s' ignored", 0, 0
-};
-static struct complaint dwarf2_missing_line_number_section =
-{
- "missing .debug_line section", 0, 0
-};
-static struct complaint dwarf2_mangled_line_number_section =
-{
- "mangled .debug_line section", 0, 0
-};
-static struct complaint dwarf2_unsupported_die_ref_attr =
-{
- "unsupported die ref attribute form: '%s'", 0, 0
-};
-static struct complaint dwarf2_unsupported_stack_op =
-{
- "unsupported stack op: '%s'", 0, 0
-};
-static struct complaint dwarf2_complex_location_expr =
-{
- "location expression too complex", 0, 0
-};
-static struct complaint dwarf2_unsupported_tag =
-{
- "unsupported tag: '%s'", 0, 0
-};
-static struct complaint dwarf2_unsupported_at_encoding =
-{
- "unsupported DW_AT_encoding: '%s'", 0, 0
-};
-static struct complaint dwarf2_unsupported_at_frame_base =
-{
- "unsupported DW_AT_frame_base for function '%s'", 0, 0
-};
-static struct complaint dwarf2_unexpected_tag =
-{
- "unexepected tag in read_type_die: '%s'", 0, 0
-};
-static struct complaint dwarf2_missing_at_frame_base =
-{
- "DW_AT_frame_base missing for DW_OP_fbreg", 0, 0
-};
-static struct complaint dwarf2_bad_static_member_name =
+static void
+dwarf2_non_const_array_bound_ignored_complaint (const char *arg1)
{
- "unrecognized static data member name '%s'", 0, 0
-};
-static struct complaint dwarf2_unsupported_accessibility =
+ complaint (&symfile_complaints, "non-constant array bounds form '%s' ignored",
+ arg1);
+}
+
+static void
+dwarf2_statement_list_fits_in_line_number_section_complaint (void)
{
- "unsupported accessibility %d", 0, 0
-};
-static struct complaint dwarf2_bad_member_name_complaint =
+ complaint (&symfile_complaints,
+ "statement list doesn't fit in .debug_line section");
+}
+
+static void
+dwarf2_complex_location_expr_complaint (void)
{
- "cannot extract member name from '%s'", 0, 0
-};
-static struct complaint dwarf2_missing_member_fn_type_complaint =
+ complaint (&symfile_complaints, "location expression too complex");
+}
+
+static void
+dwarf2_unsupported_at_frame_base_complaint (const char *arg1)
{
- "member function type missing for '%s'", 0, 0
-};
-static struct complaint dwarf2_vtbl_not_found_complaint =
+ complaint (&symfile_complaints,
+ "unsupported DW_AT_frame_base for function '%s'", arg1);
+}
+
+static void
+dwarf2_const_value_length_mismatch_complaint (const char *arg1, int arg2,
+ int arg3)
{
- "virtual function table pointer not found when defining class '%s'", 0, 0
-};
-static struct complaint dwarf2_absolute_sibling_complaint =
+ complaint (&symfile_complaints,
+ "const value length mismatch for '%s', got %d, expected %d", arg1,
+ arg2, arg3);
+}
+
+static void
+dwarf2_macros_too_long_complaint (void)
{
- "ignoring absolute DW_AT_sibling", 0, 0
-};
-static struct complaint dwarf2_const_value_length_mismatch =
+ complaint (&symfile_complaints,
+ "macro info runs off end of `.debug_macinfo' section");
+}
+
+static void
+dwarf2_macro_malformed_definition_complaint (const char *arg1)
{
- "const value length mismatch for '%s', got %d, expected %d", 0, 0
-};
-static struct complaint dwarf2_unsupported_const_value_attr =
+ complaint (&symfile_complaints,
+ "macro debug info contains a malformed macro definition:\n`%s'",
+ arg1);
+}
+
+static void
+dwarf2_invalid_attrib_class_complaint (const char *arg1, const char *arg2)
{
- "unsupported const value attribute form: '%s'", 0, 0
-};
+ complaint (&symfile_complaints,
+ "invalid attribute class or form for '%s' in '%s'", arg1, arg2);
+}
/* local function prototypes */
-static void dwarf2_locate_sections (bfd *, asection *, PTR);
+static void dwarf2_locate_sections (bfd *, asection *, void *);
#if 0
static void dwarf2_build_psymtabs_easy (struct objfile *, int);
static void psymtab_to_symtab_1 (struct partial_symtab *);
-static char *dwarf2_read_section (struct objfile *, file_ptr, unsigned int);
+char *dwarf2_read_section (struct objfile *, file_ptr, unsigned int,
+ asection *);
-static void dwarf2_read_abbrevs (bfd *, unsigned int);
+static void dwarf2_read_abbrevs (bfd *abfd, struct comp_unit_head *cu_header);
-static void dwarf2_empty_abbrev_table (PTR);
+static void dwarf2_empty_abbrev_table (void *);
-static struct abbrev_info *dwarf2_lookup_abbrev (unsigned int);
+static struct abbrev_info *dwarf2_lookup_abbrev (unsigned int,
+ const struct comp_unit_head *cu_header);
static char *read_partial_die (struct partial_die_info *,
bfd *, char *,
static char *read_attribute (struct attribute *, struct attr_abbrev *,
bfd *, char *, const struct comp_unit_head *);
+static char *read_attribute_value (struct attribute *, unsigned,
+ bfd *, char *, const struct comp_unit_head *);
+
static unsigned int read_1_byte (bfd *, char *);
static int read_1_signed_byte (bfd *, char *);
static int die_is_declaration (struct die_info *);
-static void dwarf_decode_lines (unsigned int, char *, bfd *,
+static void free_line_header (struct line_header *lh);
+
+static struct line_header *(dwarf_decode_line_header
+ (unsigned int offset,
+ bfd *abfd,
+ const struct comp_unit_head *cu_header));
+
+static void dwarf_decode_lines (struct line_header *, char *, bfd *,
const struct comp_unit_head *);
static void dwarf2_start_subfile (char *, char *);
const struct comp_unit_head *);
static int dwarf2_get_pc_bounds (struct die_info *,
- CORE_ADDR *, CORE_ADDR *, struct objfile *);
+ CORE_ADDR *, CORE_ADDR *, struct objfile *,
+ const struct comp_unit_head *);
static void dwarf2_add_field (struct field_info *, struct die_info *,
struct objfile *, const struct comp_unit_head *);
static void read_common_block (struct die_info *, struct objfile *,
const struct comp_unit_head *);
+static void read_namespace (struct die_info *die, struct objfile *objfile,
+ const struct comp_unit_head *cu_header);
+
static void read_enumeration (struct die_info *, struct objfile *,
const struct comp_unit_head *);
static char *dwarf2_linkage_name (struct die_info *);
+static char *dwarf2_name (struct die_info *die);
+
+static struct die_info *dwarf2_extension (struct die_info *die);
+
static char *dwarf_tag_name (unsigned int);
static char *dwarf_attr_name (unsigned int);
/* memory allocation interface */
-static void dwarf2_free_tmp_obstack (PTR);
+static void dwarf2_free_tmp_obstack (void *);
static struct dwarf_block *dwarf_alloc_block (void);
static struct die_info *dwarf_alloc_die (void);
+static void initialize_cu_func_list (void);
+
+static void add_to_cu_func_list (const char *, CORE_ADDR, CORE_ADDR);
+
+static void dwarf_decode_macros (struct line_header *, unsigned int,
+ char *, bfd *, const struct comp_unit_head *,
+ struct objfile *);
+
+static int attr_form_is_block (struct attribute *);
+
+static void
+dwarf2_symbol_mark_computed (struct attribute *attr, struct symbol *sym,
+ const struct comp_unit_head *,
+ struct objfile *objfile);
+
/* Try to locate the sections we need for DWARF 2 debugging
information and return true if we have enough to do something. */
int
dwarf2_has_info (bfd *abfd)
{
- dwarf_info_offset = dwarf_abbrev_offset = dwarf_line_offset = 0;
+ dwarf_info_offset = 0;
+ dwarf_abbrev_offset = 0;
+ dwarf_line_offset = 0;
dwarf_str_offset = 0;
+ dwarf_macinfo_offset = 0;
+ dwarf_frame_offset = 0;
+ dwarf_eh_frame_offset = 0;
+ dwarf_ranges_offset = 0;
+ dwarf_loc_offset = 0;
+
bfd_map_over_sections (abfd, dwarf2_locate_sections, NULL);
if (dwarf_info_offset && dwarf_abbrev_offset)
{
in. */
static void
-dwarf2_locate_sections (bfd *ignore_abfd, asection *sectp, PTR ignore_ptr)
+dwarf2_locate_sections (bfd *ignore_abfd, asection *sectp, void *ignore_ptr)
{
if (STREQ (sectp->name, INFO_SECTION))
{
dwarf_info_offset = sectp->filepos;
dwarf_info_size = bfd_get_section_size_before_reloc (sectp);
+ dwarf_info_section = sectp;
}
else if (STREQ (sectp->name, ABBREV_SECTION))
{
dwarf_abbrev_offset = sectp->filepos;
dwarf_abbrev_size = bfd_get_section_size_before_reloc (sectp);
+ dwarf_abbrev_section = sectp;
}
else if (STREQ (sectp->name, LINE_SECTION))
{
dwarf_line_offset = sectp->filepos;
dwarf_line_size = bfd_get_section_size_before_reloc (sectp);
+ dwarf_line_section = sectp;
}
else if (STREQ (sectp->name, PUBNAMES_SECTION))
{
dwarf_pubnames_offset = sectp->filepos;
dwarf_pubnames_size = bfd_get_section_size_before_reloc (sectp);
+ dwarf_pubnames_section = sectp;
}
else if (STREQ (sectp->name, ARANGES_SECTION))
{
dwarf_aranges_offset = sectp->filepos;
dwarf_aranges_size = bfd_get_section_size_before_reloc (sectp);
+ dwarf_aranges_section = sectp;
}
else if (STREQ (sectp->name, LOC_SECTION))
{
dwarf_loc_offset = sectp->filepos;
dwarf_loc_size = bfd_get_section_size_before_reloc (sectp);
+ dwarf_loc_section = sectp;
}
else if (STREQ (sectp->name, MACINFO_SECTION))
{
dwarf_macinfo_offset = sectp->filepos;
dwarf_macinfo_size = bfd_get_section_size_before_reloc (sectp);
+ dwarf_macinfo_section = sectp;
}
else if (STREQ (sectp->name, STR_SECTION))
{
dwarf_str_offset = sectp->filepos;
dwarf_str_size = bfd_get_section_size_before_reloc (sectp);
+ dwarf_str_section = sectp;
+ }
+ else if (STREQ (sectp->name, FRAME_SECTION))
+ {
+ dwarf_frame_offset = sectp->filepos;
+ dwarf_frame_size = bfd_get_section_size_before_reloc (sectp);
+ dwarf_frame_section = sectp;
+ }
+ else if (STREQ (sectp->name, EH_FRAME_SECTION))
+ {
+ dwarf_eh_frame_offset = sectp->filepos;
+ dwarf_eh_frame_size = bfd_get_section_size_before_reloc (sectp);
+ dwarf_eh_frame_section = sectp;
+ }
+ else if (STREQ (sectp->name, RANGES_SECTION))
+ {
+ dwarf_ranges_offset = sectp->filepos;
+ dwarf_ranges_size = bfd_get_section_size_before_reloc (sectp);
+ dwarf_ranges_section = sectp;
}
}
dwarf_info_buffer = dwarf2_read_section (objfile,
dwarf_info_offset,
- dwarf_info_size);
+ dwarf_info_size,
+ dwarf_info_section);
dwarf_abbrev_buffer = dwarf2_read_section (objfile,
dwarf_abbrev_offset,
- dwarf_abbrev_size);
- dwarf_line_buffer = dwarf2_read_section (objfile,
- dwarf_line_offset,
- dwarf_line_size);
+ dwarf_abbrev_size,
+ dwarf_abbrev_section);
+
+ if (dwarf_line_offset)
+ dwarf_line_buffer = dwarf2_read_section (objfile,
+ dwarf_line_offset,
+ dwarf_line_size,
+ dwarf_line_section);
+ else
+ dwarf_line_buffer = NULL;
if (dwarf_str_offset)
dwarf_str_buffer = dwarf2_read_section (objfile,
dwarf_str_offset,
- dwarf_str_size);
+ dwarf_str_size,
+ dwarf_str_section);
else
dwarf_str_buffer = NULL;
+ if (dwarf_macinfo_offset)
+ dwarf_macinfo_buffer = dwarf2_read_section (objfile,
+ dwarf_macinfo_offset,
+ dwarf_macinfo_size,
+ dwarf_macinfo_section);
+ else
+ dwarf_macinfo_buffer = NULL;
+
+ if (dwarf_ranges_offset)
+ dwarf_ranges_buffer = dwarf2_read_section (objfile,
+ dwarf_ranges_offset,
+ dwarf_ranges_size,
+ dwarf_ranges_section);
+ else
+ dwarf_ranges_buffer = NULL;
+
+ if (dwarf_loc_offset)
+ dwarf_loc_buffer = dwarf2_read_section (objfile,
+ dwarf_loc_offset,
+ dwarf_loc_size,
+ dwarf_loc_section);
+ else
+ dwarf_loc_buffer = NULL;
+
if (mainline
|| (objfile->global_psymbols.size == 0
&& objfile->static_psymbols.size == 0))
pubnames_buffer = dwarf2_read_section (objfile,
dwarf_pubnames_offset,
- dwarf_pubnames_size);
+ dwarf_pubnames_size,
+ dwarf_pubnames_section);
pubnames_ptr = pubnames_buffer;
while ((pubnames_ptr - pubnames_buffer) < dwarf_pubnames_size)
{
aranges_buffer = dwarf2_read_section (objfile,
dwarf_aranges_offset,
- dwarf_aranges_size);
+ dwarf_aranges_size,
+ dwarf_aranges_section);
}
#endif
if (cu_header.version != 2)
{
- error ("Dwarf Error: wrong version in compilation unit header.");
+ error ("Dwarf Error: wrong version in compilation unit header (is %d, should be %d) [in module %s]", cu_header.version, 2, bfd_get_filename (abfd));
return;
}
if (cu_header.abbrev_offset >= dwarf_abbrev_size)
{
- error ("Dwarf Error: bad offset (0x%lx) in compilation unit header (offset 0x%lx + 6).",
+ error ("Dwarf Error: bad offset (0x%lx) in compilation unit header (offset 0x%lx + 6) [in module %s]",
(long) cu_header.abbrev_offset,
- (long) (beg_of_comp_unit - dwarf_info_buffer));
+ (long) (beg_of_comp_unit - dwarf_info_buffer),
+ bfd_get_filename (abfd));
return;
}
if (beg_of_comp_unit + cu_header.length + cu_header.initial_length_size
> dwarf_info_buffer + dwarf_info_size)
{
- error ("Dwarf Error: bad length (0x%lx) in compilation unit header (offset 0x%lx + 0).",
+ error ("Dwarf Error: bad length (0x%lx) in compilation unit header (offset 0x%lx + 0) [in module %s]",
(long) cu_header.length,
- (long) (beg_of_comp_unit - dwarf_info_buffer));
+ (long) (beg_of_comp_unit - dwarf_info_buffer),
+ bfd_get_filename (abfd));
return;
}
+ /* Complete the cu_header */
+ cu_header.offset = beg_of_comp_unit - dwarf_info_buffer;
+ cu_header.first_die_ptr = info_ptr;
+ cu_header.cu_head_ptr = beg_of_comp_unit;
+
/* Read the abbrevs for this compilation unit into a table */
- dwarf2_read_abbrevs (abfd, cu_header.abbrev_offset);
- make_cleanup (dwarf2_empty_abbrev_table, NULL);
+ dwarf2_read_abbrevs (abfd, &cu_header);
+ make_cleanup (dwarf2_empty_abbrev_table, cu_header.dwarf2_abbrevs);
/* Read the compilation unit die */
info_ptr = read_partial_die (&comp_unit_die, abfd, info_ptr,
DWARF_ABBREV_BUFFER (pst) = dwarf_abbrev_buffer;
DWARF_ABBREV_SIZE (pst) = dwarf_abbrev_size;
DWARF_LINE_BUFFER (pst) = dwarf_line_buffer;
+ DWARF_LINE_SIZE (pst) = dwarf_line_size;
DWARF_STR_BUFFER (pst) = dwarf_str_buffer;
DWARF_STR_SIZE (pst) = dwarf_str_size;
+ DWARF_MACINFO_BUFFER (pst) = dwarf_macinfo_buffer;
+ DWARF_MACINFO_SIZE (pst) = dwarf_macinfo_size;
+ DWARF_RANGES_BUFFER (pst) = dwarf_ranges_buffer;
+ DWARF_RANGES_SIZE (pst) = dwarf_ranges_size;
+ DWARF_LOC_BUFFER (pst) = dwarf_loc_buffer;
+ DWARF_LOC_SIZE (pst) = dwarf_loc_size;
baseaddr = ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile));
/* Store the function that reads in the rest of the symbol table */
int nesting_level = 1;
+ /* We only want to read in symbols corresponding to variables or
+ other similar objects that are global or static. Normally, these
+ are all children of the DW_TAG_compile_unit die, so are all at
+ level 1. But C++ namespaces give ries to DW_TAG_namespace dies
+ whose children are global objects. So we keep track of what
+ level we currently think of as referring to file scope; this
+ should always equal 1 plus the number of namespaces that we are
+ currently nested within. */
+
+ int file_scope_level = 1;
+
*lowpc = ((CORE_ADDR) -1);
*highpc = ((CORE_ADDR) 0);
{
info_ptr = read_partial_die (&pdi, abfd, info_ptr, cu_header);
- if (pdi.name)
+ /* Anonymous namespaces have no name but are interesting. */
+
+ if (pdi.name != NULL || pdi.tag == DW_TAG_namespace)
{
switch (pdi.tag)
{
{
*highpc = pdi.highpc;
}
- if ((pdi.is_external || nesting_level == 1)
+ if ((pdi.is_external || nesting_level == file_scope_level)
&& !pdi.is_declaration)
{
add_partial_symbol (&pdi, objfile, cu_header);
case DW_TAG_structure_type:
case DW_TAG_union_type:
case DW_TAG_enumeration_type:
- if ((pdi.is_external || nesting_level == 1)
+ if ((pdi.is_external || nesting_level == file_scope_level)
&& !pdi.is_declaration)
{
add_partial_symbol (&pdi, objfile, cu_header);
}
break;
case DW_TAG_enumerator:
- /* File scope enumerators are added to the partial symbol
- table. */
- if (nesting_level == 2)
+ /* File scope enumerators are added to the partial
+ symbol table. They're children of the enumeration
+ type die, so they occur at a level one higher than we
+ normally look for. */
+ if (nesting_level == file_scope_level + 1)
add_partial_symbol (&pdi, objfile, cu_header);
break;
case DW_TAG_base_type:
/* File scope base type definitions are added to the partial
symbol table. */
- if (nesting_level == 1)
+ if (nesting_level == file_scope_level)
add_partial_symbol (&pdi, objfile, cu_header);
break;
+ case DW_TAG_namespace:
+ /* FIXME: carlton/2002-10-16: we're not yet doing
+ anything useful with this, but for now make sure that
+ these tags at least don't cause us to miss any
+ important symbols. */
+ if (pdi.has_children)
+ file_scope_level++;
default:
break;
}
}
- /* If the die has a sibling, skip to the sibling.
- Do not skip enumeration types, we want to record their
- enumerators. */
- if (pdi.sibling && pdi.tag != DW_TAG_enumeration_type)
+ /* If the die has a sibling, skip to the sibling. Do not skip
+ enumeration types, we want to record their enumerators. Do
+ not skip namespaces, we want to record symbols inside
+ them. */
+ if (pdi.sibling
+ && pdi.tag != DW_TAG_enumeration_type
+ && pdi.tag != DW_TAG_namespace)
{
info_ptr = pdi.sibling;
}
else if (pdi.has_children)
{
- /* Die has children, but the optional DW_AT_sibling attribute
- is missing. */
+ /* Die has children, but either the optional DW_AT_sibling
+ attribute is missing or we want to look at them. */
nesting_level++;
}
if (pdi.tag == 0)
{
nesting_level--;
+ /* If this is the end of a DW_TAG_namespace entry, then
+ decrease the file_scope_level, too. */
+ if (nesting_level < file_scope_level)
+ {
+ file_scope_level--;
+ gdb_assert (nesting_level == file_scope_level);
+ }
}
}
/*prim_record_minimal_symbol (pdi->name, pdi->lowpc + baseaddr,
mst_text, objfile); */
add_psymbol_to_list (pdi->name, strlen (pdi->name),
- VAR_NAMESPACE, LOC_BLOCK,
+ VAR_DOMAIN, LOC_BLOCK,
&objfile->global_psymbols,
0, pdi->lowpc + baseaddr, cu_language, objfile);
}
/*prim_record_minimal_symbol (pdi->name, pdi->lowpc + baseaddr,
mst_file_text, objfile); */
add_psymbol_to_list (pdi->name, strlen (pdi->name),
- VAR_NAMESPACE, LOC_BLOCK,
+ VAR_DOMAIN, LOC_BLOCK,
&objfile->static_psymbols,
0, pdi->lowpc + baseaddr, cu_language, objfile);
}
addr = decode_locdesc (pdi->locdesc, objfile, cu_header);
if (pdi->locdesc || pdi->has_type)
add_psymbol_to_list (pdi->name, strlen (pdi->name),
- VAR_NAMESPACE, LOC_STATIC,
+ VAR_DOMAIN, LOC_STATIC,
&objfile->global_psymbols,
0, addr + baseaddr, cu_language, objfile);
}
/*prim_record_minimal_symbol (pdi->name, addr + baseaddr,
mst_file_data, objfile); */
add_psymbol_to_list (pdi->name, strlen (pdi->name),
- VAR_NAMESPACE, LOC_STATIC,
+ VAR_DOMAIN, LOC_STATIC,
&objfile->static_psymbols,
0, addr + baseaddr, cu_language, objfile);
}
case DW_TAG_typedef:
case DW_TAG_base_type:
add_psymbol_to_list (pdi->name, strlen (pdi->name),
- VAR_NAMESPACE, LOC_TYPEDEF,
+ VAR_DOMAIN, LOC_TYPEDEF,
&objfile->static_psymbols,
0, (CORE_ADDR) 0, cu_language, objfile);
break;
if (pdi->has_children == 0)
return;
add_psymbol_to_list (pdi->name, strlen (pdi->name),
- STRUCT_NAMESPACE, LOC_TYPEDEF,
+ STRUCT_DOMAIN, LOC_TYPEDEF,
&objfile->static_psymbols,
0, (CORE_ADDR) 0, cu_language, objfile);
{
/* For C++, these implicitly act as typedefs as well. */
add_psymbol_to_list (pdi->name, strlen (pdi->name),
- VAR_NAMESPACE, LOC_TYPEDEF,
+ VAR_DOMAIN, LOC_TYPEDEF,
&objfile->static_psymbols,
0, (CORE_ADDR) 0, cu_language, objfile);
}
break;
case DW_TAG_enumerator:
add_psymbol_to_list (pdi->name, strlen (pdi->name),
- VAR_NAMESPACE, LOC_CONST,
+ VAR_DOMAIN, LOC_CONST,
&objfile->static_psymbols,
0, (CORE_ADDR) 0, cu_language, objfile);
break;
char *info_ptr;
struct symtab *symtab;
struct cleanup *back_to;
+ struct attribute *attr;
/* Set local variables from the partial symbol table info. */
offset = DWARF_INFO_OFFSET (pst);
dwarf_abbrev_buffer = DWARF_ABBREV_BUFFER (pst);
dwarf_abbrev_size = DWARF_ABBREV_SIZE (pst);
dwarf_line_buffer = DWARF_LINE_BUFFER (pst);
+ dwarf_line_size = DWARF_LINE_SIZE (pst);
dwarf_str_buffer = DWARF_STR_BUFFER (pst);
dwarf_str_size = DWARF_STR_SIZE (pst);
+ dwarf_macinfo_buffer = DWARF_MACINFO_BUFFER (pst);
+ dwarf_macinfo_size = DWARF_MACINFO_SIZE (pst);
+ dwarf_ranges_buffer = DWARF_RANGES_BUFFER (pst);
+ dwarf_ranges_size = DWARF_RANGES_SIZE (pst);
+ dwarf_loc_buffer = DWARF_LOC_BUFFER (pst);
+ dwarf_loc_size = DWARF_LOC_SIZE (pst);
baseaddr = ANOFFSET (pst->section_offsets, SECT_OFF_TEXT (objfile));
cu_header_offset = offset;
info_ptr = dwarf_info_buffer + offset;
info_ptr = read_comp_unit_head (&cu_header, info_ptr, abfd);
/* Read the abbrevs for this compilation unit */
- dwarf2_read_abbrevs (abfd, cu_header.abbrev_offset);
- make_cleanup (dwarf2_empty_abbrev_table, NULL);
+ dwarf2_read_abbrevs (abfd, &cu_header);
+ make_cleanup (dwarf2_empty_abbrev_table, cu_header.dwarf2_abbrevs);
dies = read_comp_unit (info_ptr, abfd, &cu_header);
make_cleanup_free_die_list (dies);
+ /* 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_header.base_known = 0;
+ cu_header.base_address = 0;
+
+ attr = dwarf_attr (dies, DW_AT_entry_pc);
+ if (attr)
+ {
+ cu_header.base_address = DW_ADDR (attr);
+ cu_header.base_known = 1;
+ }
+ else
+ {
+ attr = dwarf_attr (dies, DW_AT_low_pc);
+ if (attr)
+ {
+ cu_header.base_address = DW_ADDR (attr);
+ cu_header.base_known = 1;
+ }
+ }
+
/* Do line number decoding in read_file_scope () */
process_die (dies, objfile, &cu_header);
- if (!dwarf2_get_pc_bounds (dies, &lowpc, &highpc, objfile))
+ if (!dwarf2_get_pc_bounds (dies, &lowpc, &highpc, objfile, &cu_header))
{
/* Some compilers don't define a DW_AT_high_pc attribute for
the compilation unit. If the DW_AT_high_pc is missing,
{
CORE_ADDR low, high;
- if (dwarf2_get_pc_bounds (child_die, &low, &high, objfile))
+ if (dwarf2_get_pc_bounds (child_die, &low, &high,
+ objfile, &cu_header))
{
highpc = max (highpc, high);
}
}
pst->symtab = symtab;
pst->readin = 1;
- sort_symtab_syms (pst->symtab);
do_cleanups (back_to);
}
of a function and make GDB `next' properly over inlined functions. */
break;
case DW_TAG_lexical_block:
+ case DW_TAG_try_block:
+ case DW_TAG_catch_block:
read_lexical_block_scope (die, objfile, cu_header);
break;
case DW_TAG_class_type:
break;
case DW_TAG_common_inclusion:
break;
+ case DW_TAG_namespace:
+ if (!processing_has_namespace_info)
+ {
+ processing_has_namespace_info = 1;
+ processing_current_namespace = "";
+ }
+ read_namespace (die, objfile, cu_header);
+ break;
+ case DW_TAG_imported_declaration:
+ case DW_TAG_imported_module:
+ /* FIXME: carlton/2002-10-16: Eventually, we should use the
+ information contained in these. DW_TAG_imported_declaration
+ dies shouldn't have children; DW_TAG_imported_module dies
+ shouldn't in the C++ case, but conceivably could in the
+ Fortran case, so we'll have to replace this gdb_assert if
+ Fortran compilers start generating that info. */
+ if (!processing_has_namespace_info)
+ {
+ processing_has_namespace_info = 1;
+ processing_current_namespace = "";
+ }
+ gdb_assert (!die->has_children);
+ break;
default:
new_symbol (die, NULL, objfile, cu_header);
break;
}
}
+static void
+initialize_cu_func_list (void)
+{
+ cu_first_fn = cu_last_fn = cu_cached_fn = NULL;
+}
+
static void
read_file_scope (struct die_info *die, struct objfile *objfile,
const struct comp_unit_head *cu_header)
{
- unsigned int line_offset = 0;
+ struct cleanup *back_to = make_cleanup (null_cleanup, 0);
CORE_ADDR lowpc = ((CORE_ADDR) -1);
CORE_ADDR highpc = ((CORE_ADDR) 0);
struct attribute *attr;
char *comp_dir = NULL;
struct die_info *child_die;
bfd *abfd = objfile->obfd;
+ struct line_header *line_header = 0;
- if (!dwarf2_get_pc_bounds (die, &lowpc, &highpc, objfile))
+ if (!dwarf2_get_pc_bounds (die, &lowpc, &highpc, objfile, cu_header))
{
if (die->has_children)
{
{
CORE_ADDR low, high;
- if (dwarf2_get_pc_bounds (child_die, &low, &high, objfile))
+ if (dwarf2_get_pc_bounds (child_die, &low, &high,
+ objfile, cu_header))
{
lowpc = min (lowpc, low);
highpc = max (highpc, high);
start_symtab (name, comp_dir, lowpc);
record_debugformat ("DWARF 2");
- /* Decode line number information if present. */
- attr = dwarf_attr (die, DW_AT_stmt_list);
- if (attr)
- {
- line_offset = DW_UNSND (attr);
- dwarf_decode_lines (line_offset, comp_dir, abfd, cu_header);
- }
+ initialize_cu_func_list ();
/* Process all dies in compilation unit. */
if (die->has_children)
child_die = sibling_die (child_die);
}
}
+
+ /* Decode line number information if present. */
+ attr = dwarf_attr (die, DW_AT_stmt_list);
+ if (attr)
+ {
+ unsigned int line_offset = DW_UNSND (attr);
+ line_header = dwarf_decode_line_header (line_offset,
+ abfd, cu_header);
+ if (line_header)
+ {
+ make_cleanup ((make_cleanup_ftype *) free_line_header,
+ (void *) line_header);
+ dwarf_decode_lines (line_header, comp_dir, abfd, cu_header);
+ }
+ }
+
+ /* Decode macro information, if present. Dwarf 2 macro information
+ refers to information in the line number info statement program
+ header, so we can only read it if we've read the header
+ successfully. */
+ attr = dwarf_attr (die, DW_AT_macro_info);
+ if (attr && line_header)
+ {
+ unsigned int macro_offset = DW_UNSND (attr);
+ dwarf_decode_macros (line_header, macro_offset,
+ comp_dir, abfd, cu_header, objfile);
+ }
+ do_cleanups (back_to);
+}
+
+static void
+add_to_cu_func_list (const char *name, CORE_ADDR lowpc, CORE_ADDR highpc)
+{
+ struct function_range *thisfn;
+
+ thisfn = (struct function_range *)
+ obstack_alloc (&dwarf2_tmp_obstack, sizeof (struct function_range));
+ thisfn->name = name;
+ thisfn->lowpc = lowpc;
+ thisfn->highpc = highpc;
+ thisfn->seen_line = 0;
+ thisfn->next = NULL;
+
+ if (cu_last_fn == NULL)
+ cu_first_fn = thisfn;
+ else
+ cu_last_fn->next = thisfn;
+
+ cu_last_fn = thisfn;
}
static void
/* Ignore functions with missing or empty names and functions with
missing or invalid low and high pc attributes. */
- if (name == NULL || !dwarf2_get_pc_bounds (die, &lowpc, &highpc, objfile))
+ if (name == NULL || !dwarf2_get_pc_bounds (die, &lowpc, &highpc, objfile, cu_header))
return;
lowpc += baseaddr;
highpc += baseaddr;
+ /* Record the function range for dwarf_decode_lines. */
+ add_to_cu_func_list (name, lowpc, highpc);
+
if (objfile->ei.entry_point >= lowpc &&
objfile->ei.entry_point < highpc)
{
attr = dwarf_attr (die, DW_AT_frame_base);
if (attr)
{
- CORE_ADDR addr = decode_locdesc (DW_BLOCK (attr), objfile, cu_header);
+ CORE_ADDR addr;
+
+ /* Support the .debug_loc offsets */
+ if (attr_form_is_block (attr))
+ {
+ addr = decode_locdesc (DW_BLOCK (attr), objfile, cu_header);
+ }
+ else if (attr->form == DW_FORM_data4 || attr->form == DW_FORM_data8)
+ {
+ dwarf2_complex_location_expr_complaint ();
+ addr = 0;
+ }
+ else
+ {
+ dwarf2_invalid_attrib_class_complaint ("DW_AT_frame_base", name);
+ addr = 0;
+ }
+
if (isderef)
- complain (&dwarf2_unsupported_at_frame_base, name);
+ dwarf2_unsupported_at_frame_base_complaint (name);
else if (isreg)
frame_base_reg = addr;
else if (offreg)
frame_base_offset = addr;
}
else
- complain (&dwarf2_unsupported_at_frame_base, name);
+ dwarf2_unsupported_at_frame_base_complaint (name);
}
new = push_context (0, lowpc);
new->name = new_symbol (die, die->type, objfile, cu_header);
+
+ /* If there was a location expression for DW_AT_frame_base above,
+ record it. We still need to decode it above because not all
+ symbols use location expressions exclusively. */
+ if (attr)
+ dwarf2_symbol_mark_computed (attr, new->name, cu_header, objfile);
+
list_in_scope = &local_symbols;
if (die->has_children)
/* Make a block for the local symbols within. */
finish_block (new->name, &local_symbols, new->old_blocks,
lowpc, highpc, objfile);
- list_in_scope = &file_symbols;
+
+ /* 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
+ back to building a containing block's symbol lists. */
+ local_symbols = new->locals;
+ param_symbols = new->params;
+
+ /* If we've finished processing a top-level function, subsequent
+ symbols go in the file symbol list. */
+ if (outermost_context_p ())
+ list_in_scope = &file_symbols;
}
/* Process all the DIES contained within a lexical block scope. Start
struct die_info *child_die;
/* Ignore blocks with missing or invalid low and high pc attributes. */
- if (!dwarf2_get_pc_bounds (die, &lowpc, &highpc, objfile))
+ /* ??? 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
+ describe ranges. */
+ if (!dwarf2_get_pc_bounds (die, &lowpc, &highpc, objfile, cu_header))
return;
lowpc += baseaddr;
highpc += baseaddr;
local_symbols = new->locals;
}
-/* Get low and high pc attributes from a die.
- Return 1 if the attributes are present and valid, otherwise, return 0. */
-
+/* Get low and high pc attributes from a die. Return 1 if the attributes
+ are present and valid, otherwise, return 0. Return -1 if the range is
+ 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 objfile *objfile)
+dwarf2_get_pc_bounds (struct die_info *die, CORE_ADDR *lowpc,
+ CORE_ADDR *highpc, struct objfile *objfile,
+ const struct comp_unit_head *cu_header)
{
struct attribute *attr;
- CORE_ADDR low;
- CORE_ADDR high;
+ bfd *obfd = objfile->obfd;
+ CORE_ADDR low = 0;
+ CORE_ADDR high = 0;
+ int ret = 0;
- attr = dwarf_attr (die, DW_AT_low_pc);
- if (attr)
- low = DW_ADDR (attr);
- else
- return 0;
attr = dwarf_attr (die, DW_AT_high_pc);
if (attr)
- high = DW_ADDR (attr);
+ {
+ high = DW_ADDR (attr);
+ attr = dwarf_attr (die, DW_AT_low_pc);
+ if (attr)
+ low = DW_ADDR (attr);
+ else
+ /* Found high w/o low attribute. */
+ return 0;
+
+ /* Found consecutive range of addresses. */
+ ret = 1;
+ }
else
- return 0;
+ {
+ attr = dwarf_attr (die, DW_AT_ranges);
+ if (attr != NULL)
+ {
+ unsigned int addr_size = cu_header->addr_size;
+ CORE_ADDR mask = ~(~(CORE_ADDR)1 << (addr_size * 8 - 1));
+ /* Value of the DW_AT_ranges attribute is the offset in the
+ .debug_renges section. */
+ unsigned int offset = DW_UNSND (attr);
+ /* Base address selection entry. */
+ CORE_ADDR base;
+ int found_base;
+ int dummy;
+ unsigned int i;
+ char *buffer;
+ CORE_ADDR marker;
+ int low_set;
+
+ found_base = cu_header->base_known;
+ base = cu_header->base_address;
+ buffer = dwarf_ranges_buffer + offset;
+
+ /* Read in the largest possible address. */
+ marker = read_address (obfd, buffer, cu_header, &dummy);
+ if ((marker & mask) == mask)
+ {
+ /* If we found the largest possible address, then
+ read the base address. */
+ base = read_address (obfd, buffer + addr_size,
+ cu_header, &dummy);
+ buffer += 2 * addr_size;
+ offset += 2 * addr_size;
+ found_base = 1;
+ }
+
+ low_set = 0;
+
+ while (1)
+ {
+ CORE_ADDR range_beginning, range_end;
+
+ range_beginning = read_address (obfd, buffer,
+ cu_header, &dummy);
+ buffer += addr_size;
+ range_end = read_address (obfd, buffer, cu_header, &dummy);
+ buffer += addr_size;
+ offset += 2 * addr_size;
+
+ /* An end of list marker is a pair of zero addresses. */
+ if (range_beginning == 0 && range_end == 0)
+ /* Found the end of list entry. */
+ break;
+
+ /* Each base address selection entry is a pair of 2 values.
+ The first is the largest possible address, the second is
+ the base address. Check for a base address here. */
+ if ((range_beginning & mask) == mask)
+ {
+ /* If we found the largest possible address, then
+ read the base address. */
+ base = read_address (obfd, buffer + addr_size,
+ cu_header, &dummy);
+ found_base = 1;
+ continue;
+ }
+
+ if (!found_base)
+ {
+ /* We have no valid base address for the ranges
+ data. */
+ complaint (&symfile_complaints,
+ "Invalid .debug_ranges data (no base address)");
+ return 0;
+ }
+
+ range_beginning += base;
+ range_end += base;
+
+ /* FIXME: This is recording everything as a low-high
+ segment of consecutive addresses. We should have a
+ data structure for discontiguous block ranges
+ instead. */
+ if (! low_set)
+ {
+ low = range_beginning;
+ high = range_end;
+ low_set = 1;
+ }
+ else
+ {
+ if (range_beginning < low)
+ low = range_beginning;
+ if (range_end > high)
+ high = range_end;
+ }
+ }
+
+ if (! low_set)
+ /* If the first entry is an end-of-list marker, the range
+ describes an empty scope, i.e. no instructions. */
+ return 0;
+
+ ret = -1;
+ }
+ }
if (high < low)
return 0;
labels are not in the output, so the relocs get a value of 0.
If this is a discarded function, mark the pc bounds as invalid,
so that GDB will ignore it. */
- if (low == 0 && (bfd_get_file_flags (objfile->obfd) & HAS_RELOC) == 0)
+ if (low == 0 && (bfd_get_file_flags (obfd) & HAS_RELOC) == 0)
return 0;
*lowpc = low;
*highpc = high;
- return 1;
+ return ret;
}
/* Add an aggregate field to the field list. */
new_field->virtuality = DW_UNSND (attr);
fp = &new_field->field;
- if (die->tag == DW_TAG_member)
+
+ if (die->tag == DW_TAG_member && ! die_is_declaration (die))
{
+ /* Data member other than a C++ static data member. */
+
/* Get type of field. */
fp->type = die_type (die, objfile, cu_header);
+ FIELD_STATIC_KIND (*fp) = 0;
+
/* Get bit size of field (zero if none). */
attr = dwarf_attr (die, DW_AT_bit_size);
if (attr)
fip->non_public_fields = 1;
}
}
- else if (die->tag == DW_TAG_variable)
+ else if (die->tag == DW_TAG_member || die->tag == DW_TAG_variable)
{
+ /* C++ static member. */
+
+ /* NOTE: carlton/2002-11-05: It should be a DW_TAG_member that
+ 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;
- /* C++ static member.
- Get name of field. */
+ /* Get name of field. */
attr = dwarf_attr (die, DW_AT_name);
if (attr && DW_STRING (attr))
fieldname = DW_STRING (attr);
FIELD_BITPOS (*fp) = (decode_locdesc (DW_BLOCK (attr), objfile, cu_header)
* bits_per_byte);
FIELD_BITSIZE (*fp) = 0;
+ FIELD_STATIC_KIND (*fp) = 0;
FIELD_TYPE (*fp) = die_type (die, objfile, cu_header);
FIELD_NAME (*fp) = type_name_no_tag (fp->type);
fip->nbaseclasses++;
default:
/* Unknown accessibility. Complain and treat it as public. */
{
- complain (&dwarf2_unsupported_accessibility,
- fip->fields->accessibility);
+ complaint (&symfile_complaints, "unsupported accessibility %d",
+ fip->fields->accessibility);
}
break;
}
if (die->type && TYPE_CODE (die->type) == TYPE_CODE_FUNC)
{
struct type *return_type = TYPE_TARGET_TYPE (die->type);
- struct type **arg_types;
int nparams = TYPE_NFIELDS (die->type);
- int iparams;
- /* Copy argument types from the subroutine type. */
- arg_types = (struct type **)
- TYPE_ALLOC (fnp->type, (nparams + 1) * sizeof (struct type *));
- for (iparams = 0; iparams < nparams; iparams++)
- arg_types[iparams] = TYPE_FIELD_TYPE (die->type, iparams);
-
- /* Set last entry in argument type vector. */
- if (TYPE_FLAGS (die->type) & TYPE_FLAG_VARARGS)
- arg_types[nparams] = NULL;
- else
- arg_types[nparams] = dwarf2_fundamental_type (objfile, FT_VOID);
-
- smash_to_method_type (fnp->type, type, return_type, arg_types);
+ /* TYPE is the domain of this method, and DIE->TYPE is the type
+ of the method itself (TYPE_CODE_METHOD). */
+ smash_to_method_type (fnp->type, type,
+ TYPE_TARGET_TYPE (die->type),
+ TYPE_FIELDS (die->type),
+ TYPE_NFIELDS (die->type),
+ TYPE_VARARGS (die->type));
/* Handle static member functions.
Dwarf2 has no clean way to discern C++ static and non-static
fnp->voffset = VOFFSET_STATIC;
}
else
- complain (&dwarf2_missing_member_fn_type_complaint, physname);
+ complaint (&symfile_complaints, "member function type missing for '%s'",
+ physname);
/* Get fcontext from DW_AT_containing_type if present. */
if (dwarf_attr (die, DW_AT_containing_type) != NULL)
}
}
+ /* Check for artificial methods. */
+ attr = dwarf_attr (die, DW_AT_artificial);
+ if (attr && DW_UNSND (attr) != 0)
+ fnp->is_artificial = 1;
+
/* Get index in virtual function table if it is a virtual member function. */
attr = dwarf_attr (die, DW_AT_vtable_elem_location);
if (attr)
- fnp->voffset = decode_locdesc (DW_BLOCK (attr), objfile, cu_header) + 2;
+ {
+ /* Support the .debug_loc offsets */
+ if (attr_form_is_block (attr))
+ {
+ fnp->voffset = decode_locdesc (DW_BLOCK (attr), objfile, cu_header) + 2;
+ }
+ else if (attr->form == DW_FORM_data4 || attr->form == DW_FORM_data8)
+ {
+ dwarf2_complex_location_expr_complaint ();
+ }
+ else
+ {
+ dwarf2_invalid_attrib_class_complaint ("DW_AT_vtable_elem_location",
+ fieldname);
+ }
+ }
}
/* Create the vector of member function fields, and attach it to the type. */
while (child_die && child_die->tag)
{
- if (child_die->tag == DW_TAG_member)
- {
- dwarf2_add_field (&fi, child_die, objfile, cu_header);
- }
- else if (child_die->tag == DW_TAG_variable)
+ if (child_die->tag == DW_TAG_member
+ || child_die->tag == DW_TAG_variable)
{
- /* C++ static member. */
+ /* NOTE: carlton/2002-11-05: A C++ static data member
+ should be a DW_TAG_member that 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 for them instead. */
dwarf2_add_field (&fi, child_die, objfile, cu_header);
}
else if (child_die->tag == DW_TAG_subprogram)
/* Complain if virtual function table field not found. */
if (i < TYPE_N_BASECLASSES (t))
- complain (&dwarf2_vtbl_not_found_complaint,
- TYPE_TAG_NAME (type) ? TYPE_TAG_NAME (type) : "");
+ complaint (&symfile_complaints,
+ "virtual function table pointer not found when defining class '%s'",
+ TYPE_TAG_NAME (type) ? TYPE_TAG_NAME (type) :
+ "");
}
else
{
/* No children, must be stub. */
TYPE_FLAGS (type) |= TYPE_FLAG_STUB;
}
-
- die->type = type;
}
/* Given a pointer to a die which begins an enumeration, process all
* sizeof (struct field));
}
- FIELD_NAME (fields[num_fields]) = SYMBOL_NAME (sym);
+ FIELD_NAME (fields[num_fields]) = DEPRECATED_SYMBOL_NAME (sym);
FIELD_TYPE (fields[num_fields]) = NULL;
FIELD_BITPOS (fields[num_fields]) = SYMBOL_VALUE (sym);
FIELD_BITSIZE (fields[num_fields]) = 0;
+ FIELD_STATIC_KIND (fields[num_fields]) = 0;
num_fields++;
}
else if (attr->form == DW_FORM_udata
|| attr->form == DW_FORM_data1
|| attr->form == DW_FORM_data2
- || attr->form == DW_FORM_data4)
+ || attr->form == DW_FORM_data4
+ || attr->form == DW_FORM_data8)
{
low = DW_UNSND (attr);
}
else
{
- complain (&dwarf2_non_const_array_bound_ignored,
- dwarf_form_name (attr->form));
+ dwarf2_non_const_array_bound_ignored_complaint
+ (dwarf_form_name (attr->form));
#ifdef FORTRAN_HACK
die->type = lookup_pointer_type (element_type);
return;
else if (attr->form == DW_FORM_udata
|| attr->form == DW_FORM_data1
|| attr->form == DW_FORM_data2
- || attr->form == DW_FORM_data4)
+ || attr->form == DW_FORM_data4
+ || attr->form == DW_FORM_data8)
{
high = DW_UNSND (attr);
}
}
else
{
- complain (&dwarf2_non_const_array_bound_ignored,
- dwarf_form_name (attr->form));
+ dwarf2_non_const_array_bound_ignored_complaint
+ (dwarf_form_name (attr->form));
#ifdef FORTRAN_HACK
die->type = lookup_pointer_type (element_type);
return;
while (ndim-- > 0)
type = create_array_type (NULL, type, range_types[ndim]);
+ /* Understand Dwarf2 support for vector types (like they occur on
+ the PowerPC w/ AltiVec). Gcc just adds another attribute to the
+ array type. This is not part of the Dwarf2/3 standard yet, but a
+ custom vendor extension. The main difference between a regular
+ array and the vector variant is that vectors are passed by value
+ to functions. */
+ attr = dwarf_attr (die, DW_AT_GNU_vector);
+ if (attr)
+ TYPE_FLAGS (type) |= TYPE_FLAG_VECTOR;
+
do_cleanups (back_to);
/* Install the type in the die. */
attr = dwarf_attr (die, DW_AT_location);
if (attr)
{
- base = decode_locdesc (DW_BLOCK (attr), objfile, cu_header);
+ /* Support the .debug_loc offsets */
+ if (attr_form_is_block (attr))
+ {
+ base = decode_locdesc (DW_BLOCK (attr), objfile, cu_header);
+ }
+ else if (attr->form == DW_FORM_data4 || attr->form == DW_FORM_data8)
+ {
+ dwarf2_complex_location_expr_complaint ();
+ }
+ else
+ {
+ dwarf2_invalid_attrib_class_complaint ("DW_AT_location",
+ "common block member");
+ }
}
if (die->has_children)
{
}
}
-/* Extract all information from a DW_TAG_pointer_type DIE and add to
- the user defined type vector. */
+/* Read a C++ namespace. */
static void
-read_tag_pointer_type (struct die_info *die, struct objfile *objfile,
- const struct comp_unit_head *cu_header)
+read_namespace (struct die_info *die, struct objfile *objfile,
+ const struct comp_unit_head *cu_header)
{
- struct type *type;
- struct attribute *attr;
+ const char *previous_namespace = processing_current_namespace;
+ const char *name = NULL;
+ int is_anonymous;
+ struct die_info *current_die;
- if (die->type)
+ /* Loop through the extensions until we find a name. */
+
+ for (current_die = die;
+ current_die != NULL;
+ current_die = dwarf2_extension (die))
{
- return;
+ name = dwarf2_name (current_die);
+ if (name != NULL)
+ break;
}
- type = lookup_pointer_type (die_type (die, objfile, cu_header));
- attr = dwarf_attr (die, DW_AT_byte_size);
- if (attr)
+ /* Is it an anonymous namespace? */
+
+ is_anonymous = (name == NULL);
+ if (is_anonymous)
+ name = "(anonymous namespace)";
+
+ /* Now build the name of the current namespace. */
+
+ if (previous_namespace[0] == '\0')
{
- TYPE_LENGTH (type) = DW_UNSND (attr);
+ processing_current_namespace = name;
}
else
{
- TYPE_LENGTH (type) = cu_header->addr_size;
+ /* We need temp_name around because processing_current_namespace
+ is a const char *. */
+ char *temp_name = alloca (strlen (previous_namespace)
+ + 2 + strlen(name) + 1);
+ strcpy (temp_name, previous_namespace);
+ strcat (temp_name, "::");
+ strcat (temp_name, name);
+
+ processing_current_namespace = temp_name;
+ }
+
+ /* If it's an anonymous namespace that we're seeing for the first
+ time, add a using directive. */
+
+ if (is_anonymous && dwarf_attr (die, DW_AT_extension) == NULL)
+ cp_add_using_directive (processing_current_namespace,
+ strlen (previous_namespace),
+ strlen (processing_current_namespace));
+
+ if (die->has_children)
+ {
+ struct die_info *child_die = die->next;
+
+ while (child_die && child_die->tag)
+ {
+ process_die (child_die, objfile, cu_header);
+ child_die = sibling_die (child_die);
+ }
+ }
+
+ processing_current_namespace = previous_namespace;
+}
+
+/* Extract all information from a DW_TAG_pointer_type DIE and add to
+ the user defined type vector. */
+
+static void
+read_tag_pointer_type (struct die_info *die, struct objfile *objfile,
+ const struct comp_unit_head *cu_header)
+{
+ struct type *type;
+ struct attribute *attr_byte_size;
+ struct attribute *attr_address_class;
+ int byte_size, addr_class;
+
+ if (die->type)
+ {
+ return;
+ }
+
+ type = lookup_pointer_type (die_type (die, objfile, cu_header));
+
+ attr_byte_size = dwarf_attr (die, DW_AT_byte_size);
+ if (attr_byte_size)
+ byte_size = DW_UNSND (attr_byte_size);
+ else
+ byte_size = cu_header->addr_size;
+
+ attr_address_class = dwarf_attr (die, DW_AT_address_class);
+ if (attr_address_class)
+ addr_class = DW_UNSND (attr_address_class);
+ else
+ addr_class = DW_ADDR_none;
+
+ /* If the pointer size or address class is different than the
+ default, create a type variant marked as such and set the
+ length accordingly. */
+ if (TYPE_LENGTH (type) != byte_size || addr_class != DW_ADDR_none)
+ {
+ if (ADDRESS_CLASS_TYPE_FLAGS_P ())
+ {
+ int type_flags;
+
+ type_flags = ADDRESS_CLASS_TYPE_FLAGS (byte_size, addr_class);
+ gdb_assert ((type_flags & ~TYPE_FLAG_ADDRESS_CLASS_ALL) == 0);
+ type = make_type_with_address_space (type, type_flags);
+ }
+ else if (TYPE_LENGTH (type) != byte_size)
+ {
+ complaint (&symfile_complaints, "invalid pointer size %d", byte_size);
+ }
+ else {
+ /* Should we also complain about unhandled address classes? */
+ }
}
+
+ TYPE_LENGTH (type) = byte_size;
die->type = type;
}
}
else
{
- length = 1;
+ /* check for the DW_AT_byte_size attribute */
+ attr = dwarf_attr (die, DW_AT_byte_size);
+ if (attr)
+ {
+ length = DW_UNSND (attr);
+ }
+ else
+ {
+ length = 1;
+ }
}
index_type = dwarf2_fundamental_type (objfile, FT_INTEGER);
range_type = create_range_type (NULL, index_type, 1, length);
- char_type = dwarf2_fundamental_type (objfile, FT_CHAR);
- type = create_string_type (char_type, range_type);
+ if (cu_language == language_fortran)
+ {
+ /* Need to create a unique string type for bounds
+ information */
+ type = create_string_type (0, range_type);
+ }
+ else
+ {
+ char_type = dwarf2_fundamental_type (objfile, FT_CHAR);
+ type = create_string_type (char_type, range_type);
+ }
die->type = type;
}
read_typedef (struct die_info *die, struct objfile *objfile,
const struct comp_unit_head *cu_header)
{
- struct type *type;
+ struct attribute *attr;
+ char *name = NULL;
if (!die->type)
{
- struct attribute *attr;
- struct type *xtype;
-
- xtype = die_type (die, objfile, cu_header);
-
- type = alloc_type (objfile);
- TYPE_CODE (type) = TYPE_CODE_TYPEDEF;
- TYPE_FLAGS (type) |= TYPE_FLAG_TARGET_STUB;
- TYPE_TARGET_TYPE (type) = xtype;
attr = dwarf_attr (die, DW_AT_name);
if (attr && DW_STRING (attr))
- TYPE_NAME (type) = obsavestring (DW_STRING (attr),
- strlen (DW_STRING (attr)),
- &objfile->type_obstack);
-
- die->type = type;
+ {
+ name = DW_STRING (attr);
+ }
+ die->type = init_type (TYPE_CODE_TYPEDEF, 0, TYPE_FLAG_TARGET_STUB, name, objfile);
+ TYPE_TARGET_TYPE (die->type) = die_type (die, objfile, cu_header);
}
}
if (attr && DW_STRING (attr))
{
enum type_code code = TYPE_CODE_INT;
- int is_unsigned = 0;
+ int type_flags = 0;
switch (encoding)
{
case DW_ATE_address:
/* Turn DW_ATE_address into a void * pointer. */
code = TYPE_CODE_PTR;
- is_unsigned = 1;
+ type_flags |= TYPE_FLAG_UNSIGNED;
break;
case DW_ATE_boolean:
code = TYPE_CODE_BOOL;
- is_unsigned = 1;
+ type_flags |= TYPE_FLAG_UNSIGNED;
break;
case DW_ATE_complex_float:
code = TYPE_CODE_COMPLEX;
break;
case DW_ATE_unsigned:
case DW_ATE_unsigned_char:
- is_unsigned = 1;
+ type_flags |= TYPE_FLAG_UNSIGNED;
break;
default:
- complain (&dwarf2_unsupported_at_encoding,
- dwarf_type_encoding_name (encoding));
+ complaint (&symfile_complaints, "unsupported DW_AT_encoding: '%s'",
+ dwarf_type_encoding_name (encoding));
break;
}
- type = init_type (code, size, is_unsigned, DW_STRING (attr), objfile);
+ type = init_type (code, size, type_flags, DW_STRING (attr), objfile);
if (encoding == DW_ATE_address)
TYPE_TARGET_TYPE (type) = dwarf2_fundamental_type (objfile, FT_VOID);
+ else if (encoding == DW_ATE_complex_float)
+ {
+ if (size == 32)
+ TYPE_TARGET_TYPE (type)
+ = dwarf2_fundamental_type (objfile, FT_EXT_PREC_FLOAT);
+ else if (size == 16)
+ TYPE_TARGET_TYPE (type)
+ = dwarf2_fundamental_type (objfile, FT_DBL_PREC_FLOAT);
+ else if (size == 8)
+ TYPE_TARGET_TYPE (type)
+ = dwarf2_fundamental_type (objfile, FT_FLOAT);
+ }
}
else
{
/* Read the contents of the section at OFFSET and of size SIZE from the
object file specified by OBJFILE into the psymbol_obstack and return it. */
-static char *
+char *
dwarf2_read_section (struct objfile *objfile, file_ptr offset,
- unsigned int size)
+ unsigned int size, asection *sectp)
{
bfd *abfd = objfile->obfd;
- char *buf;
+ char *buf, *retbuf;
if (size == 0)
return NULL;
buf = (char *) obstack_alloc (&objfile->psymbol_obstack, size);
+ retbuf
+ = (char *) symfile_relocate_debug_section (abfd, sectp, (bfd_byte *) buf);
+ if (retbuf != NULL)
+ return retbuf;
+
if ((bfd_seek (abfd, offset, SEEK_SET) != 0) ||
(bfd_bread (buf, size, abfd) != size))
{
in a hash table. */
static void
-dwarf2_read_abbrevs (bfd *abfd, unsigned int offset)
+dwarf2_read_abbrevs (bfd *abfd, struct comp_unit_head *cu_header)
{
char *abbrev_ptr;
struct abbrev_info *cur_abbrev;
unsigned int abbrev_number, bytes_read, abbrev_name;
unsigned int abbrev_form, hash_number;
- /* empty the table */
- dwarf2_empty_abbrev_table (NULL);
+ /* Initialize dwarf2 abbrevs */
+ memset (cu_header->dwarf2_abbrevs, 0,
+ ABBREV_HASH_SIZE*sizeof (struct abbrev_info *));
- abbrev_ptr = dwarf_abbrev_buffer + offset;
+ abbrev_ptr = dwarf_abbrev_buffer + cu_header->abbrev_offset;
abbrev_number = read_unsigned_leb128 (abfd, abbrev_ptr, &bytes_read);
abbrev_ptr += bytes_read;
}
hash_number = abbrev_number % ABBREV_HASH_SIZE;
- cur_abbrev->next = dwarf2_abbrevs[hash_number];
- dwarf2_abbrevs[hash_number] = cur_abbrev;
+ cur_abbrev->next = cu_header->dwarf2_abbrevs[hash_number];
+ cu_header->dwarf2_abbrevs[hash_number] = cur_abbrev;
/* Get next abbreviation.
Under Irix6 the abbreviations for a compilation unit are not
break;
abbrev_number = read_unsigned_leb128 (abfd, abbrev_ptr, &bytes_read);
abbrev_ptr += bytes_read;
- if (dwarf2_lookup_abbrev (abbrev_number) != NULL)
+ if (dwarf2_lookup_abbrev (abbrev_number, cu_header) != NULL)
break;
}
}
/* ARGSUSED */
static void
-dwarf2_empty_abbrev_table (PTR ignore)
+dwarf2_empty_abbrev_table (void *ptr_to_abbrevs_table)
{
int i;
struct abbrev_info *abbrev, *next;
+ struct abbrev_info **abbrevs;
+
+ abbrevs = (struct abbrev_info **)ptr_to_abbrevs_table;
for (i = 0; i < ABBREV_HASH_SIZE; ++i)
{
next = NULL;
- abbrev = dwarf2_abbrevs[i];
+ abbrev = abbrevs[i];
while (abbrev)
{
next = abbrev->next;
xfree (abbrev);
abbrev = next;
}
- dwarf2_abbrevs[i] = NULL;
+ abbrevs[i] = NULL;
}
}
/* Lookup an abbrev_info structure in the abbrev hash table. */
static struct abbrev_info *
-dwarf2_lookup_abbrev (unsigned int number)
+dwarf2_lookup_abbrev (unsigned int number, const struct comp_unit_head *cu_header)
{
unsigned int hash_number;
struct abbrev_info *abbrev;
hash_number = number % ABBREV_HASH_SIZE;
- abbrev = dwarf2_abbrevs[hash_number];
+ abbrev = cu_header->dwarf2_abbrevs[hash_number];
while (abbrev)
{
if (!abbrev_number)
return info_ptr;
- abbrev = dwarf2_lookup_abbrev (abbrev_number);
+ abbrev = dwarf2_lookup_abbrev (abbrev_number, cu_header);
if (!abbrev)
{
- error ("Dwarf Error: Could not find abbrev number %d.", abbrev_number);
+ error ("Dwarf Error: Could not find abbrev number %d [in module %s]", abbrev_number,
+ bfd_get_filename (abfd));
}
part_die->offset = info_ptr - dwarf_info_buffer;
part_die->tag = abbrev->tag;
part_die->highpc = DW_ADDR (&attr);
break;
case DW_AT_location:
- part_die->locdesc = DW_BLOCK (&attr);
+ /* Support the .debug_loc offsets */
+ if (attr_form_is_block (&attr))
+ {
+ part_die->locdesc = DW_BLOCK (&attr);
+ }
+ else if (attr.form == DW_FORM_data4 || attr.form == DW_FORM_data8)
+ {
+ dwarf2_complex_location_expr_complaint ();
+ }
+ else
+ {
+ dwarf2_invalid_attrib_class_complaint ("DW_AT_location",
+ "partial symbol information");
+ }
break;
case DW_AT_language:
part_die->language = DW_UNSND (&attr);
/* Ignore absolute siblings, they might point outside of
the current compile unit. */
if (attr.form == DW_FORM_ref_addr)
- complain (&dwarf2_absolute_sibling_complaint);
+ complaint (&symfile_complaints, "ignoring absolute DW_AT_sibling");
else
part_die->sibling =
dwarf_info_buffer + dwarf2_get_ref_die_offset (&attr);
return info_ptr;
}
- abbrev = dwarf2_lookup_abbrev (abbrev_number);
+ abbrev = dwarf2_lookup_abbrev (abbrev_number, cu_header);
if (!abbrev)
{
- error ("Dwarf Error: could not find abbrev number %d.", abbrev_number);
+ error ("Dwarf Error: could not find abbrev number %d [in module %s]", abbrev_number,
+ bfd_get_filename (abfd));
}
die = dwarf_alloc_die ();
die->offset = offset;
return info_ptr;
}
-/* Read an attribute described by an abbreviated attribute. */
+/* Read an attribute value described by an attribute form. */
static char *
-read_attribute (struct attribute *attr, struct attr_abbrev *abbrev,
+read_attribute_value (struct attribute *attr, unsigned form,
bfd *abfd, char *info_ptr,
const struct comp_unit_head *cu_header)
{
unsigned int bytes_read;
struct dwarf_block *blk;
- attr->name = abbrev->name;
- attr->form = abbrev->form;
- switch (abbrev->form)
+ attr->form = form;
+ switch (form)
{
case DW_FORM_addr:
case DW_FORM_ref_addr:
info_ptr += bytes_read;
break;
case DW_FORM_indirect:
+ form = read_unsigned_leb128 (abfd, info_ptr, &bytes_read);
+ info_ptr += bytes_read;
+ info_ptr = read_attribute_value (attr, form, abfd, info_ptr, cu_header);
+ break;
default:
- error ("Dwarf Error: Cannot handle %s in DWARF reader.",
- dwarf_form_name (abbrev->form));
+ error ("Dwarf Error: Cannot handle %s in DWARF reader [in module %s]",
+ dwarf_form_name (form),
+ bfd_get_filename (abfd));
}
return info_ptr;
}
+/* Read an attribute described by an abbreviated attribute. */
+
+static char *
+read_attribute (struct attribute *attr, struct attr_abbrev *abbrev,
+ bfd *abfd, char *info_ptr,
+ const struct comp_unit_head *cu_header)
+{
+ attr->name = abbrev->name;
+ return read_attribute_value (attr, abbrev->form, abfd, info_ptr, cu_header);
+}
+
/* read dwarf information from a buffer */
static unsigned int
break;
default:
internal_error (__FILE__, __LINE__,
- "read_address: bad switch, signed");
+ "read_address: bad switch, signed [in module %s]",
+ bfd_get_filename (abfd));
}
}
else
break;
default:
internal_error (__FILE__, __LINE__,
- "read_address: bad switch, unsigned");
+ "read_address: bad switch, unsigned [in module %s]",
+ bfd_get_filename (abfd));
}
}
return retval;
}
-/* Reads the initial length from a section. The (draft) DWARF 2.1
+/* Read the initial length from a section. The (draft) DWARF 3
specification allows the initial length to take up either 4 bytes
or 12 bytes. If the first 4 bytes are 0xffffffff, then the next 8
bytes describe the length and all offsets will be 8 bytes in length
instead of 4.
+ An older, non-standard 64-bit format is also handled by this
+ function. The older format in question stores the initial length
+ as an 8-byte quantity without an escape value. Lengths greater
+ than 2^32 aren't very common which means that the initial 4 bytes
+ is almost always zero. Since a length value of zero doesn't make
+ sense for the 32-bit format, this initial zero can be considered to
+ be an escape value which indicates the presence of the older 64-bit
+ format. As written, the code can't detect (old format) lengths
+ greater than 4GB. If it becomes necessary to handle lengths somewhat
+ larger than 4GB, we could allow other small values (such as the
+ non-sensical values of 1, 2, and 3) to also be used as escape values
+ indicating the presence of the old format.
+
The value returned via bytes_read should be used to increment
the relevant pointer after calling read_initial_length().
[ Note: read_initial_length() and read_offset() are based on the
document entitled "DWARF Debugging Information Format", revision
- 2.1, draft 4, dated July 20, 2000. This document was obtained
+ 3, draft 8, dated November 19, 2001. This document was obtained
from:
- http://reality.sgi.com/dehnert_engr/dwarf/dwarf2p1-draft4-000720.pdf
+ http://reality.sgiweb.org/davea/dwarf3-draft8-011125.pdf
This document is only a draft and is subject to change. (So beware.)
- - Kevin, Aug 4, 2000
+ Details regarding the older, non-standard 64-bit format were
+ determined empirically by examining 64-bit ELF files produced
+ by the SGI toolchain on an IRIX 6.5 machine.
+
+ - Kevin, July 16, 2002
] */
static LONGEST
cu_header->offset_size = 8;
}
}
+ else if (retval == 0)
+ {
+ /* Handle (non-standard) 64-bit DWARF2 formats such as that used
+ by IRIX. */
+ retval = bfd_get_64 (abfd, (bfd_byte *) buf);
+ *bytes_read = 8;
+ if (cu_header != NULL)
+ {
+ cu_header->initial_length_size = 8;
+ cu_header->offset_size = 8;
+ }
+ }
else
{
*bytes_read = 4;
break;
default:
internal_error (__FILE__, __LINE__,
- "read_offset: bad switch");
+ "read_offset: bad switch [in module %s]",
+ bfd_get_filename (abfd));
}
return retval;
if (dwarf_str_buffer == NULL)
{
- error ("DW_FORM_strp used without .debug_str section");
+ error ("DW_FORM_strp used without .debug_str section [in module %s]",
+ bfd_get_filename (abfd));
return NULL;
}
if (str_offset >= dwarf_str_size)
{
- error ("DW_FORM_strp pointing outside of .debug_str section");
+ error ("DW_FORM_strp pointing outside of .debug_str section [in module %s]",
+ bfd_get_filename (abfd));
return NULL;
}
gdb_assert (HOST_CHAR_BIT == 8);
break;
case DW_LANG_Fortran77:
case DW_LANG_Fortran90:
+ case DW_LANG_Fortran95:
cu_language = language_fortran;
break;
case DW_LANG_Mips_Assembler:
cu_language = language_java;
break;
case DW_LANG_Ada83:
+ case DW_LANG_Ada95:
case DW_LANG_Cobol74:
case DW_LANG_Cobol85:
case DW_LANG_Pascal83:
case DW_LANG_Modula2:
default:
- cu_language = language_unknown;
+ cu_language = language_minimal;
break;
}
cu_language_defn = language_def (cu_language);
&& ! dwarf_attr (die, DW_AT_specification));
}
-/* Decode the line number information for the compilation unit whose
- line number info is at OFFSET in the .debug_line section.
- The compilation directory of the file is passed in COMP_DIR. */
-struct filenames
+/* Free the line_header structure *LH, and any arrays and strings it
+ refers to. */
+static void
+free_line_header (struct line_header *lh)
+{
+ if (lh->standard_opcode_lengths)
+ xfree (lh->standard_opcode_lengths);
+
+ /* Remember that all the lh->file_names[i].name pointers are
+ pointers into debug_line_buffer, and don't need to be freed. */
+ if (lh->file_names)
+ xfree (lh->file_names);
+
+ /* Similarly for the include directory names. */
+ if (lh->include_dirs)
+ xfree (lh->include_dirs);
+
+ xfree (lh);
+}
+
+
+/* Add an entry to LH's include directory table. */
+static void
+add_include_dir (struct line_header *lh, char *include_dir)
{
- unsigned int num_files;
- struct fileinfo
+ /* Grow the array if necessary. */
+ if (lh->include_dirs_size == 0)
{
- char *name;
- unsigned int dir;
- unsigned int time;
- unsigned int size;
+ lh->include_dirs_size = 1; /* for testing */
+ lh->include_dirs = xmalloc (lh->include_dirs_size
+ * sizeof (*lh->include_dirs));
+ }
+ else if (lh->num_include_dirs >= lh->include_dirs_size)
+ {
+ lh->include_dirs_size *= 2;
+ lh->include_dirs = xrealloc (lh->include_dirs,
+ (lh->include_dirs_size
+ * sizeof (*lh->include_dirs)));
}
- *files;
-};
-struct directories
- {
- unsigned int num_dirs;
- char **dirs;
- };
+ lh->include_dirs[lh->num_include_dirs++] = include_dir;
+}
+
+/* Add an entry to LH's file name table. */
static void
-dwarf_decode_lines (unsigned int offset, char *comp_dir, bfd *abfd,
- const struct comp_unit_head *cu_header)
+add_file_name (struct line_header *lh,
+ char *name,
+ unsigned int dir_index,
+ unsigned int mod_time,
+ unsigned int length)
{
- char *line_ptr;
- char *line_end;
- struct line_head lh;
- struct cleanup *back_to;
- unsigned int i, bytes_read;
- char *cur_file, *cur_dir;
- unsigned char op_code, extended_op, adj_opcode;
+ struct file_entry *fe;
-#define FILE_ALLOC_CHUNK 5
-#define DIR_ALLOC_CHUNK 5
+ /* Grow the array if necessary. */
+ if (lh->file_names_size == 0)
+ {
+ lh->file_names_size = 1; /* for testing */
+ lh->file_names = xmalloc (lh->file_names_size
+ * sizeof (*lh->file_names));
+ }
+ else if (lh->num_file_names >= lh->file_names_size)
+ {
+ lh->file_names_size *= 2;
+ lh->file_names = xrealloc (lh->file_names,
+ (lh->file_names_size
+ * sizeof (*lh->file_names)));
+ }
- struct filenames files;
- struct directories dirs;
+ fe = &lh->file_names[lh->num_file_names++];
+ fe->name = name;
+ fe->dir_index = dir_index;
+ fe->mod_time = mod_time;
+ fe->length = length;
+}
+
+
+/* Read the statement program header starting at OFFSET in
+ dwarf_line_buffer, according to the endianness of ABFD. Return a
+ pointer to a struct line_header, allocated using xmalloc.
+
+ NOTE: the strings in the include directory and file name tables of
+ the returned object point into debug_line_buffer, and must not be
+ freed. */
+static struct line_header *
+dwarf_decode_line_header (unsigned int offset, bfd *abfd,
+ const struct comp_unit_head *cu_header)
+{
+ struct cleanup *back_to;
+ struct line_header *lh;
+ char *line_ptr;
+ int bytes_read;
+ int i;
+ char *cur_dir, *cur_file;
if (dwarf_line_buffer == NULL)
{
- complain (&dwarf2_missing_line_number_section);
- return;
+ complaint (&symfile_complaints, "missing .debug_line section");
+ return 0;
}
- files.num_files = 0;
- files.files = NULL;
+ /* Make sure that at least there's room for the total_length field. That
+ could be 12 bytes long, but we're just going to fudge that. */
+ if (offset + 4 >= dwarf_line_size)
+ {
+ dwarf2_statement_list_fits_in_line_number_section_complaint ();
+ return 0;
+ }
- dirs.num_dirs = 0;
- dirs.dirs = NULL;
+ lh = xmalloc (sizeof (*lh));
+ memset (lh, 0, sizeof (*lh));
+ back_to = make_cleanup ((make_cleanup_ftype *) free_line_header,
+ (void *) lh);
line_ptr = dwarf_line_buffer + offset;
- /* read in the prologue */
- lh.total_length = read_initial_length (abfd, line_ptr, NULL, &bytes_read);
+ /* read in the header */
+ lh->total_length = read_initial_length (abfd, line_ptr, NULL, &bytes_read);
line_ptr += bytes_read;
- line_end = line_ptr + lh.total_length;
- lh.version = read_2_bytes (abfd, line_ptr);
+ if (line_ptr + lh->total_length > dwarf_line_buffer + dwarf_line_size)
+ {
+ dwarf2_statement_list_fits_in_line_number_section_complaint ();
+ return 0;
+ }
+ lh->statement_program_end = line_ptr + lh->total_length;
+ lh->version = read_2_bytes (abfd, line_ptr);
line_ptr += 2;
- lh.prologue_length = read_offset (abfd, line_ptr, cu_header, &bytes_read);
+ lh->header_length = read_offset (abfd, line_ptr, cu_header, &bytes_read);
line_ptr += bytes_read;
- lh.minimum_instruction_length = read_1_byte (abfd, line_ptr);
+ lh->minimum_instruction_length = read_1_byte (abfd, line_ptr);
line_ptr += 1;
- lh.default_is_stmt = read_1_byte (abfd, line_ptr);
+ lh->default_is_stmt = read_1_byte (abfd, line_ptr);
line_ptr += 1;
- lh.line_base = read_1_signed_byte (abfd, line_ptr);
+ lh->line_base = read_1_signed_byte (abfd, line_ptr);
line_ptr += 1;
- lh.line_range = read_1_byte (abfd, line_ptr);
+ lh->line_range = read_1_byte (abfd, line_ptr);
line_ptr += 1;
- lh.opcode_base = read_1_byte (abfd, line_ptr);
+ lh->opcode_base = read_1_byte (abfd, line_ptr);
line_ptr += 1;
- lh.standard_opcode_lengths = (unsigned char *)
- xmalloc (lh.opcode_base * sizeof (unsigned char));
- back_to = make_cleanup (free_current_contents, &lh.standard_opcode_lengths);
+ lh->standard_opcode_lengths
+ = (unsigned char *) xmalloc (lh->opcode_base * sizeof (unsigned char));
- lh.standard_opcode_lengths[0] = 1;
- for (i = 1; i < lh.opcode_base; ++i)
+ lh->standard_opcode_lengths[0] = 1; /* This should never be used anyway. */
+ for (i = 1; i < lh->opcode_base; ++i)
{
- lh.standard_opcode_lengths[i] = read_1_byte (abfd, line_ptr);
+ lh->standard_opcode_lengths[i] = read_1_byte (abfd, line_ptr);
line_ptr += 1;
}
while ((cur_dir = read_string (abfd, line_ptr, &bytes_read)) != NULL)
{
line_ptr += bytes_read;
- if ((dirs.num_dirs % DIR_ALLOC_CHUNK) == 0)
- {
- dirs.dirs = (char **)
- xrealloc (dirs.dirs,
- (dirs.num_dirs + DIR_ALLOC_CHUNK) * sizeof (char *));
- if (dirs.num_dirs == 0)
- make_cleanup (free_current_contents, &dirs.dirs);
- }
- dirs.dirs[dirs.num_dirs++] = cur_dir;
+ add_include_dir (lh, cur_dir);
}
line_ptr += bytes_read;
/* Read file name table */
while ((cur_file = read_string (abfd, line_ptr, &bytes_read)) != NULL)
{
+ unsigned int dir_index, mod_time, length;
+
line_ptr += bytes_read;
- if ((files.num_files % FILE_ALLOC_CHUNK) == 0)
- {
- files.files = (struct fileinfo *)
- xrealloc (files.files,
- (files.num_files + FILE_ALLOC_CHUNK)
- * sizeof (struct fileinfo));
- if (files.num_files == 0)
- make_cleanup (free_current_contents, &files.files);
- }
- files.files[files.num_files].name = cur_file;
- files.files[files.num_files].dir =
- read_unsigned_leb128 (abfd, line_ptr, &bytes_read);
+ dir_index = read_unsigned_leb128 (abfd, line_ptr, &bytes_read);
line_ptr += bytes_read;
- files.files[files.num_files].time =
- read_unsigned_leb128 (abfd, line_ptr, &bytes_read);
+ mod_time = read_unsigned_leb128 (abfd, line_ptr, &bytes_read);
line_ptr += bytes_read;
- files.files[files.num_files].size =
- read_unsigned_leb128 (abfd, line_ptr, &bytes_read);
+ length = read_unsigned_leb128 (abfd, line_ptr, &bytes_read);
line_ptr += bytes_read;
- files.num_files++;
+
+ add_file_name (lh, cur_file, dir_index, mod_time, length);
}
line_ptr += bytes_read;
+ lh->statement_program_start = line_ptr;
+
+ if (line_ptr > dwarf_line_buffer + dwarf_line_size)
+ complaint (&symfile_complaints,
+ "line number info header doesn't fit in `.debug_line' section");
+
+ discard_cleanups (back_to);
+ return lh;
+}
+
+/* This function exists to work around a bug in certain compilers
+ (particularly GCC 2.95), in which the first line number marker of a
+ function does not show up until after the prologue, right before
+ the second line number marker. This function shifts ADDRESS down
+ to the beginning of the function if necessary, and is called on
+ addresses passed to record_line. */
+
+static CORE_ADDR
+check_cu_functions (CORE_ADDR address)
+{
+ struct function_range *fn;
+
+ /* Find the function_range containing address. */
+ if (!cu_first_fn)
+ return address;
+
+ if (!cu_cached_fn)
+ cu_cached_fn = cu_first_fn;
+
+ fn = cu_cached_fn;
+ while (fn)
+ if (fn->lowpc <= address && fn->highpc > address)
+ goto found;
+ else
+ fn = fn->next;
+
+ fn = cu_first_fn;
+ while (fn && fn != cu_cached_fn)
+ if (fn->lowpc <= address && fn->highpc > address)
+ goto found;
+ else
+ fn = fn->next;
+
+ return address;
+
+ found:
+ if (fn->seen_line)
+ return address;
+ if (address != fn->lowpc)
+ complaint (&symfile_complaints,
+ "misplaced first line number at 0x%lx for '%s'",
+ (unsigned long) address, fn->name);
+ fn->seen_line = 1;
+ return fn->lowpc;
+}
+
+/* Decode the line number information for the compilation unit whose
+ line number info is at OFFSET in the .debug_line section.
+ The compilation directory of the file is passed in COMP_DIR. */
+
+static void
+dwarf_decode_lines (struct line_header *lh, char *comp_dir, bfd *abfd,
+ const struct comp_unit_head *cu_header)
+{
+ char *line_ptr;
+ char *line_end;
+ unsigned int i, bytes_read;
+ char *cur_dir;
+ unsigned char op_code, extended_op, adj_opcode;
+
+ line_ptr = lh->statement_program_start;
+ line_end = lh->statement_program_end;
/* Read the statement sequences until there's nothing left. */
while (line_ptr < line_end)
unsigned int file = 1;
unsigned int line = 1;
unsigned int column = 0;
- int is_stmt = lh.default_is_stmt;
+ int is_stmt = lh->default_is_stmt;
int basic_block = 0;
int end_sequence = 0;
/* Start a subfile for the current file of the state machine. */
- if (files.num_files >= file)
+ if (lh->num_file_names >= file)
{
- /* The file and directory tables are 0 based, the references
- are 1 based. */
- dwarf2_start_subfile (files.files[file - 1].name,
- (files.files[file - 1].dir
- ? dirs.dirs[files.files[file - 1].dir - 1]
- : comp_dir));
+ /* lh->include_dirs and lh->file_names are 0-based, but the
+ directory and file name numbers in the statement program
+ are 1-based. */
+ struct file_entry *fe = &lh->file_names[file - 1];
+ char *dir;
+ if (fe->dir_index)
+ dir = lh->include_dirs[fe->dir_index - 1];
+ else
+ dir = comp_dir;
+ dwarf2_start_subfile (fe->name, dir);
}
/* Decode the table. */
op_code = read_1_byte (abfd, line_ptr);
line_ptr += 1;
- if (op_code >= lh.opcode_base)
+ 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;
- line += lh.line_base + (adj_opcode % lh.line_range);
+ adj_opcode = op_code - lh->opcode_base;
+ address += (adj_opcode / lh->line_range)
+ * lh->minimum_instruction_length;
+ line += lh->line_base + (adj_opcode % lh->line_range);
/* append row to matrix using current values */
- record_line (current_subfile, line, address);
+ record_line (current_subfile, line,
+ check_cu_functions (address));
basic_block = 1;
}
else switch (op_code)
{
case DW_LNE_end_sequence:
end_sequence = 1;
- /* Don't call record_line here. The end_sequence
- instruction provides the address of the first byte
- *after* the last line in the sequence; it's not the
- address of any real source line. However, the GDB
- linetable structure only records the starts of lines,
- not the ends. This is a weakness of GDB. */
+ record_line (current_subfile, 0, address);
break;
case DW_LNE_set_address:
address = read_address (abfd, line_ptr, cu_header, &bytes_read);
address += baseaddr;
break;
case DW_LNE_define_file:
- cur_file = read_string (abfd, line_ptr, &bytes_read);
- line_ptr += bytes_read;
- if ((files.num_files % FILE_ALLOC_CHUNK) == 0)
- {
- files.files = (struct fileinfo *)
- xrealloc (files.files,
- (files.num_files + FILE_ALLOC_CHUNK)
- * sizeof (struct fileinfo));
- if (files.num_files == 0)
- make_cleanup (free_current_contents, &files.files);
- }
- files.files[files.num_files].name = cur_file;
- files.files[files.num_files].dir =
- read_unsigned_leb128 (abfd, line_ptr, &bytes_read);
- line_ptr += bytes_read;
- files.files[files.num_files].time =
- read_unsigned_leb128 (abfd, line_ptr, &bytes_read);
- line_ptr += bytes_read;
- files.files[files.num_files].size =
- read_unsigned_leb128 (abfd, line_ptr, &bytes_read);
- line_ptr += bytes_read;
- files.num_files++;
+ {
+ 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 =
+ read_unsigned_leb128 (abfd, line_ptr, &bytes_read);
+ line_ptr += bytes_read;
+ mod_time =
+ read_unsigned_leb128 (abfd, line_ptr, &bytes_read);
+ line_ptr += bytes_read;
+ length =
+ read_unsigned_leb128 (abfd, line_ptr, &bytes_read);
+ line_ptr += bytes_read;
+ add_file_name (lh, cur_file, dir_index, mod_time, length);
+ }
break;
default:
- complain (&dwarf2_mangled_line_number_section);
- goto done;
+ complaint (&symfile_complaints,
+ "mangled .debug_line section");
+ return;
}
break;
case DW_LNS_copy:
- record_line (current_subfile, line, address);
+ record_line (current_subfile, line,
+ check_cu_functions (address));
basic_block = 0;
break;
case DW_LNS_advance_pc:
- address += lh.minimum_instruction_length
+ address += lh->minimum_instruction_length
* read_unsigned_leb128 (abfd, line_ptr, &bytes_read);
line_ptr += bytes_read;
break;
line_ptr += bytes_read;
break;
case DW_LNS_set_file:
- /* The file and directory tables are 0 based, the references
- are 1 based. */
- file = read_unsigned_leb128 (abfd, line_ptr, &bytes_read);
- line_ptr += bytes_read;
- dwarf2_start_subfile
- (files.files[file - 1].name,
- (files.files[file - 1].dir
- ? dirs.dirs[files.files[file - 1].dir - 1]
- : comp_dir));
+ {
+ /* lh->include_dirs and lh->file_names are 0-based,
+ but the directory and file name numbers in the
+ statement program are 1-based. */
+ struct file_entry *fe;
+ char *dir;
+ file = read_unsigned_leb128 (abfd, line_ptr, &bytes_read);
+ line_ptr += bytes_read;
+ fe = &lh->file_names[file - 1];
+ if (fe->dir_index)
+ dir = lh->include_dirs[fe->dir_index - 1];
+ else
+ dir = comp_dir;
+ dwarf2_start_subfile (fe->name, dir);
+ }
break;
case DW_LNS_set_column:
column = read_unsigned_leb128 (abfd, line_ptr, &bytes_read);
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));
+ address += (lh->minimum_instruction_length
+ * ((255 - lh->opcode_base) / lh->line_range));
break;
case DW_LNS_fixed_advance_pc:
address += read_2_bytes (abfd, line_ptr);
default:
{ /* Unknown standard opcode, ignore it. */
int i;
- for (i = 0; i < lh.standard_opcode_lengths[op_code]; i++)
+ for (i = 0; i < lh->standard_opcode_lengths[op_code]; i++)
{
(void) read_unsigned_leb128 (abfd, line_ptr, &bytes_read);
line_ptr += bytes_read;
}
}
}
-done:
- do_cleanups (back_to);
}
/* Start a subfile for DWARF. FILENAME is the name of the file and
start_subfile (filename, dirname);
}
+static void
+var_decode_location (struct attribute *attr, struct symbol *sym,
+ struct objfile *objfile,
+ const struct comp_unit_head *cu_header)
+{
+ /* NOTE drow/2003-01-30: There used to be a comment and some special
+ code here to turn a symbol with DW_AT_external and a
+ SYMBOL_VALUE_ADDRESS of 0 into a LOC_UNRESOLVED symbol. This was
+ necessary for platforms (maybe Alpha, certainly PowerPC GNU/Linux
+ with some versions of binutils) where shared libraries could have
+ relocations against symbols in their debug information - the
+ minimal symbol would have the right address, but the debug info
+ would not. It's no longer necessary, because we will explicitly
+ apply relocations when we read in the debug information now. */
+
+ /* A DW_AT_location attribute with no contents indicates that a
+ variable has been optimized away. */
+ if (attr_form_is_block (attr) && DW_BLOCK (attr)->size == 0)
+ {
+ SYMBOL_CLASS (sym) = LOC_OPTIMIZED_OUT;
+ return;
+ }
+
+ /* Handle one degenerate form of location expression specially, to
+ preserve GDB's previous behavior when section offsets are
+ specified. If this is just a DW_OP_addr then mark this symbol
+ as LOC_STATIC. */
+
+ if (attr_form_is_block (attr)
+ && DW_BLOCK (attr)->size == 1 + cu_header->addr_size
+ && DW_BLOCK (attr)->data[0] == DW_OP_addr)
+ {
+ int dummy;
+
+ SYMBOL_VALUE_ADDRESS (sym) =
+ read_address (objfile->obfd, DW_BLOCK (attr)->data + 1, cu_header,
+ &dummy);
+ fixup_symbol_section (sym, objfile);
+ SYMBOL_VALUE_ADDRESS (sym) += ANOFFSET (objfile->section_offsets,
+ SYMBOL_SECTION (sym));
+ SYMBOL_CLASS (sym) = LOC_STATIC;
+ return;
+ }
+
+ /* NOTE drow/2002-01-30: It might be worthwhile to have a static
+ expression evaluator, and use LOC_COMPUTED only when necessary
+ (i.e. when the value of a register or memory location is
+ referenced, or a thread-local block, etc.). Then again, it might
+ not be worthwhile. I'm assuming that it isn't unless performance
+ or memory numbers show me otherwise. */
+
+ dwarf2_symbol_mark_computed (attr, sym, cu_header, objfile);
+ SYMBOL_CLASS (sym) = LOC_COMPUTED;
+}
+
/* Given a pointer to a DWARF information entry, figure out if we need
to make a symbol table entry for it, and if so, create a new entry
and return a pointer to it.
char *name;
struct attribute *attr = NULL;
struct attribute *attr2 = NULL;
- CORE_ADDR addr;
+ CORE_ADDR addr = 0;
name = dwarf2_linkage_name (die);
if (name)
sizeof (struct symbol));
OBJSTAT (objfile, n_syms++);
memset (sym, 0, sizeof (struct symbol));
- SYMBOL_NAME (sym) = obsavestring (name, strlen (name),
- &objfile->symbol_obstack);
+
+ /* 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);
/* Default assumptions.
Use the passed type or decode it from the die. */
- SYMBOL_NAMESPACE (sym) = VAR_NAMESPACE;
+ SYMBOL_DOMAIN (sym) = VAR_DOMAIN;
SYMBOL_CLASS (sym) = LOC_STATIC;
if (type != NULL)
SYMBOL_TYPE (sym) = type;
{
SYMBOL_LINE (sym) = DW_UNSND (attr);
}
-
- /* If this symbol is from a C++ compilation, then attempt to
- cache the demangled form for future reference. This is a
- typical time versus space tradeoff, that was decided in favor
- of time because it sped up C++ symbol lookups by a factor of
- about 20. */
-
- SYMBOL_LANGUAGE (sym) = cu_language;
- SYMBOL_INIT_DEMANGLED_NAME (sym, &objfile->symbol_obstack);
switch (die->tag)
{
case DW_TAG_label:
attr = dwarf_attr (die, DW_AT_location);
if (attr)
{
+ var_decode_location (attr, sym, objfile, cu_header);
attr2 = dwarf_attr (die, DW_AT_external);
if (attr2 && (DW_UNSND (attr2) != 0))
- {
- SYMBOL_VALUE_ADDRESS (sym) =
- decode_locdesc (DW_BLOCK (attr), objfile, cu_header);
- add_symbol_to_list (sym, &global_symbols);
-
- /* In shared libraries the address of the variable
- in the location descriptor might still be relocatable,
- so its value could be zero.
- Enter the symbol as a LOC_UNRESOLVED symbol, if its
- value is zero, the address of the variable will then
- be determined from the minimal symbol table whenever
- the variable is referenced. */
- if (SYMBOL_VALUE_ADDRESS (sym))
- {
- fixup_symbol_section (sym, objfile);
- SYMBOL_VALUE_ADDRESS (sym) +=
- ANOFFSET (objfile->section_offsets,
- SYMBOL_SECTION (sym));
- SYMBOL_CLASS (sym) = LOC_STATIC;
- }
- else
- SYMBOL_CLASS (sym) = LOC_UNRESOLVED;
- }
+ add_symbol_to_list (sym, &global_symbols);
else
- {
- SYMBOL_VALUE (sym) = addr =
- decode_locdesc (DW_BLOCK (attr), objfile, cu_header);
- add_symbol_to_list (sym, list_in_scope);
- if (optimized_out)
- {
- SYMBOL_CLASS (sym) = LOC_OPTIMIZED_OUT;
- }
- else if (isreg)
- {
- SYMBOL_CLASS (sym) = LOC_REGISTER;
- SYMBOL_VALUE (sym) =
- DWARF2_REG_TO_REGNUM (SYMBOL_VALUE (sym));
- }
- else if (offreg)
- {
- SYMBOL_CLASS (sym) = LOC_BASEREG;
- SYMBOL_BASEREG (sym) = DWARF2_REG_TO_REGNUM (basereg);
- }
- else if (islocal)
- {
- SYMBOL_CLASS (sym) = LOC_LOCAL;
- }
- else
- {
- fixup_symbol_section (sym, objfile);
- SYMBOL_VALUE_ADDRESS (sym) =
- addr + ANOFFSET (objfile->section_offsets,
- SYMBOL_SECTION (sym));
- SYMBOL_CLASS (sym) = LOC_STATIC;
- }
- }
+ add_symbol_to_list (sym, list_in_scope);
}
else
{
if (isderef)
{
if (basereg != frame_base_reg)
- complain (&dwarf2_complex_location_expr);
+ dwarf2_complex_location_expr_complaint ();
SYMBOL_CLASS (sym) = LOC_REF_ARG;
}
else
case DW_TAG_union_type:
case DW_TAG_enumeration_type:
SYMBOL_CLASS (sym) = LOC_TYPEDEF;
- SYMBOL_NAMESPACE (sym) = STRUCT_NAMESPACE;
+ SYMBOL_DOMAIN (sym) = STRUCT_DOMAIN;
add_symbol_to_list (sym, list_in_scope);
/* The semantics of C++ state that "struct foo { ... }" also
obstack_alloc (&objfile->symbol_obstack,
sizeof (struct symbol));
*typedef_sym = *sym;
- SYMBOL_NAMESPACE (typedef_sym) = VAR_NAMESPACE;
+ SYMBOL_DOMAIN (typedef_sym) = VAR_DOMAIN;
if (TYPE_NAME (SYMBOL_TYPE (sym)) == 0)
TYPE_NAME (SYMBOL_TYPE (sym)) =
- obsavestring (SYMBOL_NAME (sym),
- strlen (SYMBOL_NAME (sym)),
+ obsavestring (DEPRECATED_SYMBOL_NAME (sym),
+ strlen (DEPRECATED_SYMBOL_NAME (sym)),
&objfile->type_obstack);
add_symbol_to_list (typedef_sym, list_in_scope);
}
case DW_TAG_typedef:
case DW_TAG_base_type:
SYMBOL_CLASS (sym) = LOC_TYPEDEF;
- SYMBOL_NAMESPACE (sym) = VAR_NAMESPACE;
+ SYMBOL_DOMAIN (sym) = VAR_DOMAIN;
add_symbol_to_list (sym, list_in_scope);
break;
case DW_TAG_enumerator:
trash data, but since we must specifically ignore things
we don't recognize, there is nothing else we should do at
this point. */
- complain (&dwarf2_unsupported_tag, dwarf_tag_name (die->tag));
+ complaint (&symfile_complaints, "unsupported tag: '%s'",
+ dwarf_tag_name (die->tag));
break;
}
}
{
case DW_FORM_addr:
if (TYPE_LENGTH (SYMBOL_TYPE (sym)) != cu_header->addr_size)
- complain (&dwarf2_const_value_length_mismatch, SYMBOL_NAME (sym),
- cu_header->addr_size, TYPE_LENGTH (SYMBOL_TYPE (sym)));
+ dwarf2_const_value_length_mismatch_complaint (DEPRECATED_SYMBOL_NAME (sym),
+ cu_header->addr_size,
+ TYPE_LENGTH (SYMBOL_TYPE
+ (sym)));
SYMBOL_VALUE_BYTES (sym) = (char *)
obstack_alloc (&objfile->symbol_obstack, cu_header->addr_size);
- store_address (SYMBOL_VALUE_BYTES (sym), cu_header->addr_size,
- DW_ADDR (attr));
+ /* 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));
SYMBOL_CLASS (sym) = LOC_CONST_BYTES;
break;
case DW_FORM_block1:
case DW_FORM_block:
blk = DW_BLOCK (attr);
if (TYPE_LENGTH (SYMBOL_TYPE (sym)) != blk->size)
- complain (&dwarf2_const_value_length_mismatch, SYMBOL_NAME (sym),
- blk->size, TYPE_LENGTH (SYMBOL_TYPE (sym)));
+ dwarf2_const_value_length_mismatch_complaint (DEPRECATED_SYMBOL_NAME (sym),
+ blk->size,
+ TYPE_LENGTH (SYMBOL_TYPE
+ (sym)));
SYMBOL_VALUE_BYTES (sym) = (char *)
obstack_alloc (&objfile->symbol_obstack, blk->size);
memcpy (SYMBOL_VALUE_BYTES (sym), blk->data, blk->size);
break;
default:
- complain (&dwarf2_unsupported_const_value_attr,
- dwarf_form_name (attr->form));
+ complaint (&symfile_complaints,
+ "unsupported const value attribute form: '%s'",
+ dwarf_form_name (attr->form));
SYMBOL_VALUE (sym) = 0;
SYMBOL_CLASS (sym) = LOC_CONST;
break;
type_die = follow_die_ref (ref);
if (!type_die)
{
- error ("Dwarf Error: Cannot find referent at offset %d.", ref);
+ error ("Dwarf Error: Cannot find referent at offset %d [in module %s]",
+ ref, objfile->name);
return NULL;
}
}
if (!type)
{
dump_die (type_die);
- error ("Dwarf Error: Problem turning type die at offset into gdb type.");
+ error ("Dwarf Error: Problem turning type die at offset into gdb type [in module %s]",
+ objfile->name);
}
return type;
}
type_die = follow_die_ref (ref);
if (!type_die)
{
- error ("Dwarf Error: Cannot find referent at offset %d.", ref);
+ error ("Dwarf Error: Cannot find referent at offset %d [in module %s]", ref,
+ objfile->name);
return NULL;
}
type = tag_type_to_type (type_die, objfile, cu_header);
{
if (type_die)
dump_die (type_die);
- error ("Dwarf Error: Problem turning containing type into gdb type.");
+ error ("Dwarf Error: Problem turning containing type into gdb type [in module %s]",
+ objfile->name);
}
return type;
}
if (!die->type)
{
dump_die (die);
- error ("Dwarf Error: Cannot find type of die.");
+ error ("Dwarf Error: Cannot find type of die [in module %s]",
+ objfile->name);
}
return die->type;
}
read_base_type (die, objfile);
break;
default:
- complain (&dwarf2_unexpected_tag, dwarf_tag_name (die->tag));
+ complaint (&symfile_complaints, "unexepected tag in read_type_die: '%s'",
+ dwarf_tag_name (die->tag));
break;
}
}
return NULL;
}
+/* Get name of a die, return NULL if not found. */
+
+static char *
+dwarf2_name (struct die_info *die)
+{
+ struct attribute *attr;
+
+ attr = dwarf_attr (die, DW_AT_name);
+ if (attr && DW_STRING (attr))
+ return DW_STRING (attr);
+ return NULL;
+}
+
+/* Return the die that this die in an extension of, or NULL if there
+ is none. */
+
+static struct die_info *
+dwarf2_extension (struct die_info *die)
+{
+ struct attribute *attr;
+ struct die_info *extension_die;
+ unsigned int ref;
+
+ attr = dwarf_attr (die, DW_AT_extension);
+ if (attr == NULL)
+ return NULL;
+
+ ref = dwarf2_get_ref_die_offset (attr);
+ extension_die = follow_die_ref (ref);
+ if (!extension_die)
+ {
+ error ("Dwarf Error: Cannot find referent at offset %d.", ref);
+ }
+
+ return extension_die;
+}
+
/* Convert a DIE tag into its string name. */
static char *
return "DW_TAG_variable";
case DW_TAG_volatile_type:
return "DW_TAG_volatile_type";
+ case DW_TAG_dwarf_procedure:
+ return "DW_TAG_dwarf_procedure";
+ case DW_TAG_restrict_type:
+ return "DW_TAG_restrict_type";
+ case DW_TAG_interface_type:
+ return "DW_TAG_interface_type";
+ case DW_TAG_namespace:
+ return "DW_TAG_namespace";
+ case DW_TAG_imported_module:
+ return "DW_TAG_imported_module";
+ case DW_TAG_unspecified_type:
+ return "DW_TAG_unspecified_type";
+ case DW_TAG_partial_unit:
+ return "DW_TAG_partial_unit";
+ case DW_TAG_imported_unit:
+ return "DW_TAG_imported_unit";
case DW_TAG_MIPS_loop:
return "DW_TAG_MIPS_loop";
case DW_TAG_format_label:
return "DW_AT_virtuality";
case DW_AT_vtable_elem_location:
return "DW_AT_vtable_elem_location";
-
+ case DW_AT_allocated:
+ return "DW_AT_allocated";
+ case DW_AT_associated:
+ return "DW_AT_associated";
+ case DW_AT_data_location:
+ return "DW_AT_data_location";
+ case DW_AT_stride:
+ return "DW_AT_stride";
+ case DW_AT_entry_pc:
+ return "DW_AT_entry_pc";
+ case DW_AT_use_UTF8:
+ return "DW_AT_use_UTF8";
+ case DW_AT_extension:
+ return "DW_AT_extension";
+ case DW_AT_ranges:
+ return "DW_AT_ranges";
+ case DW_AT_trampoline:
+ return "DW_AT_trampoline";
+ case DW_AT_call_column:
+ return "DW_AT_call_column";
+ case DW_AT_call_file:
+ return "DW_AT_call_file";
+ case DW_AT_call_line:
+ return "DW_AT_call_line";
#ifdef MIPS
case DW_AT_MIPS_fde:
return "DW_AT_MIPS_fde";
return "DW_AT_body_begin";
case DW_AT_body_end:
return "DW_AT_body_end";
+ case DW_AT_GNU_vector:
+ return "DW_AT_GNU_vector";
default:
return "DW_AT_<unknown>";
}
return "DW_OP_xderef_size";
case DW_OP_nop:
return "DW_OP_nop";
+ /* DWARF 3 extensions. */
+ case DW_OP_push_object_address:
+ return "DW_OP_push_object_address";
+ case DW_OP_call2:
+ return "DW_OP_call2";
+ case DW_OP_call4:
+ return "DW_OP_call4";
+ case DW_OP_call_ref:
+ return "DW_OP_call_ref";
+ /* GNU extensions. */
+ case DW_OP_GNU_push_tls_address:
+ return "DW_OP_GNU_push_tls_address";
default:
return "OP_<unknown>";
}
return "DW_ATE_unsigned";
case DW_ATE_unsigned_char:
return "DW_ATE_unsigned_char";
+ case DW_ATE_imaginary_float:
+ return "DW_ATE_imaginary_float";
default:
return "DW_ATE_<unknown>";
}
return "DW_CFA_def_cfa_register";
case DW_CFA_def_cfa_offset:
return "DW_CFA_def_cfa_offset";
+
+ /* DWARF 3 */
+ case DW_CFA_def_cfa_expression:
+ return "DW_CFA_def_cfa_expression";
+ case DW_CFA_expression:
+ return "DW_CFA_expression";
+ case DW_CFA_offset_extended_sf:
+ return "DW_CFA_offset_extended_sf";
+ case DW_CFA_def_cfa_sf:
+ return "DW_CFA_def_cfa_sf";
+ case DW_CFA_def_cfa_offset_sf:
+ return "DW_CFA_def_cfa_offset_sf";
+
/* SGI/MIPS specific */
case DW_CFA_MIPS_advance_loc8:
return "DW_CFA_MIPS_advance_loc8";
+
+ /* GNU extensions */
+ case DW_CFA_GNU_window_save:
+ return "DW_CFA_GNU_window_save";
+ case DW_CFA_GNU_args_size:
+ return "DW_CFA_GNU_args_size";
+ case DW_CFA_GNU_negative_offset_extended:
+ return "DW_CFA_GNU_negative_offset_extended";
+
default:
return "DW_CFA_<unknown>";
}
{
unsigned int i;
- fprintf (stderr, "Die: %s (abbrev = %d, offset = %d)\n",
+ fprintf_unfiltered (gdb_stderr, "Die: %s (abbrev = %d, offset = %d)\n",
dwarf_tag_name (die->tag), die->abbrev, die->offset);
- fprintf (stderr, "\thas children: %s\n",
+ fprintf_unfiltered (gdb_stderr, "\thas children: %s\n",
dwarf_bool_name (die->has_children));
- fprintf (stderr, "\tattributes:\n");
+ fprintf_unfiltered (gdb_stderr, "\tattributes:\n");
for (i = 0; i < die->num_attrs; ++i)
{
- fprintf (stderr, "\t\t%s (%s) ",
+ fprintf_unfiltered (gdb_stderr, "\t\t%s (%s) ",
dwarf_attr_name (die->attrs[i].name),
dwarf_form_name (die->attrs[i].form));
switch (die->attrs[i].form)
{
case DW_FORM_ref_addr:
case DW_FORM_addr:
- fprintf (stderr, "address: ");
+ fprintf_unfiltered (gdb_stderr, "address: ");
print_address_numeric (DW_ADDR (&die->attrs[i]), 1, gdb_stderr);
break;
case DW_FORM_block2:
case DW_FORM_block4:
case DW_FORM_block:
case DW_FORM_block1:
- fprintf (stderr, "block: size %d", DW_BLOCK (&die->attrs[i])->size);
+ fprintf_unfiltered (gdb_stderr, "block: size %d", DW_BLOCK (&die->attrs[i])->size);
break;
case DW_FORM_data1:
case DW_FORM_data2:
case DW_FORM_ref4:
case DW_FORM_udata:
case DW_FORM_sdata:
- fprintf (stderr, "constant: %ld", DW_UNSND (&die->attrs[i]));
+ fprintf_unfiltered (gdb_stderr, "constant: %ld", DW_UNSND (&die->attrs[i]));
break;
case DW_FORM_string:
case DW_FORM_strp:
- fprintf (stderr, "string: \"%s\"",
+ fprintf_unfiltered (gdb_stderr, "string: \"%s\"",
DW_STRING (&die->attrs[i])
? DW_STRING (&die->attrs[i]) : "");
break;
case DW_FORM_flag:
if (DW_UNSND (&die->attrs[i]))
- fprintf (stderr, "flag: TRUE");
+ fprintf_unfiltered (gdb_stderr, "flag: TRUE");
else
- fprintf (stderr, "flag: FALSE");
+ fprintf_unfiltered (gdb_stderr, "flag: FALSE");
+ break;
+ case DW_FORM_indirect:
+ /* the reader will have reduced the indirect form to
+ the "base form" so this form should not occur */
+ fprintf_unfiltered (gdb_stderr, "unexpected attribute form: DW_FORM_indirect");
break;
- case DW_FORM_indirect: /* we do not handle indirect yet */
default:
- fprintf (stderr, "unsupported attribute form: %d.",
+ fprintf_unfiltered (gdb_stderr, "unsupported attribute form: %d.",
die->attrs[i].form);
}
- fprintf (stderr, "\n");
+ fprintf_unfiltered (gdb_stderr, "\n");
}
}
result = cu_header_offset + DW_UNSND (attr);
break;
default:
- complain (&dwarf2_unsupported_die_ref_attr, dwarf_form_name (attr->form));
+ complaint (&symfile_complaints,
+ "unsupported die ref attribute form: '%s'",
+ dwarf_form_name (attr->form));
}
return result;
}
{
if (typeid < 0 || typeid >= FT_NUM_MEMBERS)
{
- error ("Dwarf Error: internal error - invalid fundamental type id %d.",
- typeid);
+ error ("Dwarf Error: internal error - invalid fundamental type id %d [in module %s]",
+ typeid, objfile->name);
}
/* Look for this particular type in the fundamental type vector. If
offreg = 0;
isderef = 0;
islocal = 0;
+ is_thread_local = 0;
optimized_out = 1;
while (i < size)
op = data[i++];
switch (op)
{
+ case DW_OP_lit0:
+ case DW_OP_lit1:
+ case DW_OP_lit2:
+ case DW_OP_lit3:
+ case DW_OP_lit4:
+ case DW_OP_lit5:
+ case DW_OP_lit6:
+ case DW_OP_lit7:
+ case DW_OP_lit8:
+ case DW_OP_lit9:
+ case DW_OP_lit10:
+ case DW_OP_lit11:
+ case DW_OP_lit12:
+ case DW_OP_lit13:
+ case DW_OP_lit14:
+ case DW_OP_lit15:
+ case DW_OP_lit16:
+ case DW_OP_lit17:
+ case DW_OP_lit18:
+ case DW_OP_lit19:
+ case DW_OP_lit20:
+ case DW_OP_lit21:
+ case DW_OP_lit22:
+ case DW_OP_lit23:
+ case DW_OP_lit24:
+ case DW_OP_lit25:
+ case DW_OP_lit26:
+ case DW_OP_lit27:
+ case DW_OP_lit28:
+ case DW_OP_lit29:
+ case DW_OP_lit30:
+ case DW_OP_lit31:
+ stack[++stacki] = op - DW_OP_lit0;
+ break;
+
case DW_OP_reg0:
case DW_OP_reg1:
case DW_OP_reg2:
isreg = 1;
unsnd = read_unsigned_leb128 (NULL, (data + i), &bytes_read);
i += bytes_read;
-#if defined(HARRIS_TARGET) && defined(_M88K)
- /* The Harris 88110 gdb ports have long kept their special reg
- numbers between their gp-regs and their x-regs. This is
- not how our dwarf is generated. Punt. */
- unsnd += 6;
-#endif
stack[++stacki] = unsnd;
break;
}
else
{
- complain (&dwarf2_missing_at_frame_base);
+ complaint (&symfile_complaints,
+ "DW_AT_frame_base missing for DW_OP_fbreg");
islocal = 1;
}
break;
i += bytes_read;
break;
+ case DW_OP_dup:
+ stack[stacki + 1] = stack[stacki];
+ stacki++;
+ break;
+
case DW_OP_plus:
stack[stacki - 1] += stack[stacki];
stacki--;
break;
case DW_OP_minus:
- stack[stacki - 1] = stack[stacki] - stack[stacki - 1];
+ stack[stacki - 1] -= stack[stacki];
stacki--;
break;
/* If we're not the last op, then we definitely can't encode
this using GDB's address_class enum. */
if (i < size)
- complain (&dwarf2_complex_location_expr);
+ dwarf2_complex_location_expr_complaint ();
break;
+ case DW_OP_GNU_push_tls_address:
+ is_thread_local = 1;
+ /* The top of the stack has the offset from the beginning
+ of the thread control block at which the variable is located. */
+ /* Nothing should follow this operator, so the top of stack would
+ be returned. */
+ if (i < size)
+ dwarf2_complex_location_expr_complaint ();
+ break;
+
default:
- complain (&dwarf2_unsupported_stack_op, dwarf_stack_op_name (op));
+ complaint (&symfile_complaints, "unsupported stack op: '%s'",
+ dwarf_stack_op_name (op));
return (stack[stacki]);
}
}
/* ARGSUSED */
static void
-dwarf2_free_tmp_obstack (PTR ignore)
+dwarf2_free_tmp_obstack (void *ignore)
{
obstack_free (&dwarf2_tmp_obstack, NULL);
}
memset (die, 0, sizeof (struct die_info));
return (die);
}
+
+\f
+/* Macro support. */
+
+
+/* Return the full name of file number I in *LH's file name table.
+ Use COMP_DIR as the name of the current directory of the
+ compilation. The result is allocated using xmalloc; the caller is
+ responsible for freeing it. */
+static char *
+file_full_name (int file, struct line_header *lh, const char *comp_dir)
+{
+ struct file_entry *fe = &lh->file_names[file - 1];
+
+ if (IS_ABSOLUTE_PATH (fe->name))
+ return xstrdup (fe->name);
+ else
+ {
+ const char *dir;
+ int dir_len;
+ char *full_name;
+
+ if (fe->dir_index)
+ dir = lh->include_dirs[fe->dir_index - 1];
+ else
+ dir = comp_dir;
+
+ if (dir)
+ {
+ dir_len = strlen (dir);
+ full_name = xmalloc (dir_len + 1 + strlen (fe->name) + 1);
+ strcpy (full_name, dir);
+ full_name[dir_len] = '/';
+ strcpy (full_name + dir_len + 1, fe->name);
+ return full_name;
+ }
+ else
+ return xstrdup (fe->name);
+ }
+}
+
+
+static struct macro_source_file *
+macro_start_file (int file, int line,
+ struct macro_source_file *current_file,
+ const char *comp_dir,
+ struct line_header *lh, struct objfile *objfile)
+{
+ /* The full name of this source file. */
+ char *full_name = file_full_name (file, lh, comp_dir);
+
+ /* We don't create a macro table for this compilation unit
+ at all until we actually get a filename. */
+ if (! pending_macros)
+ pending_macros = new_macro_table (&objfile->symbol_obstack,
+ objfile->macro_cache);
+
+ if (! current_file)
+ /* If we have no current file, then this must be the start_file
+ directive for the compilation unit's main source file. */
+ current_file = macro_set_main (pending_macros, full_name);
+ else
+ current_file = macro_include (current_file, line, full_name);
+
+ xfree (full_name);
+
+ return current_file;
+}
+
+
+/* Copy the LEN characters at BUF to a xmalloc'ed block of memory,
+ followed by a null byte. */
+static char *
+copy_string (const char *buf, int len)
+{
+ char *s = xmalloc (len + 1);
+ memcpy (s, buf, len);
+ s[len] = '\0';
+
+ return s;
+}
+
+
+static const char *
+consume_improper_spaces (const char *p, const char *body)
+{
+ if (*p == ' ')
+ {
+ complaint (&symfile_complaints,
+ "macro definition contains spaces in formal argument list:\n`%s'",
+ body);
+
+ while (*p == ' ')
+ p++;
+ }
+
+ return p;
+}
+
+
+static void
+parse_macro_definition (struct macro_source_file *file, int line,
+ const char *body)
+{
+ const char *p;
+
+ /* The body string takes one of two forms. For object-like macro
+ definitions, it should be:
+
+ <macro name> " " <definition>
+
+ For function-like macro definitions, it should be:
+
+ <macro name> "() " <definition>
+ or
+ <macro name> "(" <arg name> ( "," <arg name> ) * ") " <definition>
+
+ Spaces may appear only where explicitly indicated, and in the
+ <definition>.
+
+ 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 Dwarf 2 spec says that there should be no spaces between the
+ formal arguments in a function-like macro's formal argument list,
+ but versions of GCC around March 2002 include spaces after the
+ commas. */
+
+
+ /* Find the extent of the macro name. The macro name is terminated
+ by either a space or null character (for an object-like macro) or
+ an opening paren (for a function-like macro). */
+ for (p = body; *p; p++)
+ if (*p == ' ' || *p == '(')
+ break;
+
+ if (*p == ' ' || *p == '\0')
+ {
+ /* It's an object-like macro. */
+ int name_len = p - body;
+ char *name = copy_string (body, name_len);
+ const char *replacement;
+
+ if (*p == ' ')
+ replacement = body + name_len + 1;
+ else
+ {
+ dwarf2_macro_malformed_definition_complaint (body);
+ replacement = body + name_len;
+ }
+
+ macro_define_object (file, line, name, replacement);
+
+ xfree (name);
+ }
+ else if (*p == '(')
+ {
+ /* It's a function-like macro. */
+ char *name = copy_string (body, p - body);
+ int argc = 0;
+ int argv_size = 1;
+ char **argv = xmalloc (argv_size * sizeof (*argv));
+
+ p++;
+
+ p = consume_improper_spaces (p, body);
+
+ /* Parse the formal argument list. */
+ while (*p && *p != ')')
+ {
+ /* Find the extent of the current argument name. */
+ const char *arg_start = p;
+
+ while (*p && *p != ',' && *p != ')' && *p != ' ')
+ p++;
+
+ if (! *p || p == arg_start)
+ dwarf2_macro_malformed_definition_complaint (body);
+ else
+ {
+ /* Make sure argv has room for the new argument. */
+ if (argc >= argv_size)
+ {
+ argv_size *= 2;
+ argv = xrealloc (argv, argv_size * sizeof (*argv));
+ }
+
+ argv[argc++] = copy_string (arg_start, p - arg_start);
+ }
+
+ p = consume_improper_spaces (p, body);
+
+ /* Consume the comma, if present. */
+ if (*p == ',')
+ {
+ p++;
+
+ p = consume_improper_spaces (p, body);
+ }
+ }
+
+ if (*p == ')')
+ {
+ p++;
+
+ if (*p == ' ')
+ /* Perfectly formed definition, no complaints. */
+ macro_define_function (file, line, name,
+ 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,
+ p);
+ }
+ else
+ /* Just complain. */
+ dwarf2_macro_malformed_definition_complaint (body);
+ }
+ else
+ /* Just complain. */
+ dwarf2_macro_malformed_definition_complaint (body);
+
+ xfree (name);
+ {
+ int i;
+
+ for (i = 0; i < argc; i++)
+ xfree (argv[i]);
+ }
+ xfree (argv);
+ }
+ else
+ dwarf2_macro_malformed_definition_complaint (body);
+}
+
+
+static void
+dwarf_decode_macros (struct line_header *lh, unsigned int offset,
+ char *comp_dir, bfd *abfd,
+ const struct comp_unit_head *cu_header,
+ struct objfile *objfile)
+{
+ char *mac_ptr, *mac_end;
+ struct macro_source_file *current_file = 0;
+
+ if (dwarf_macinfo_buffer == NULL)
+ {
+ complaint (&symfile_complaints, "missing .debug_macinfo section");
+ return;
+ }
+
+ mac_ptr = dwarf_macinfo_buffer + offset;
+ mac_end = dwarf_macinfo_buffer + dwarf_macinfo_size;
+
+ for (;;)
+ {
+ enum dwarf_macinfo_record_type macinfo_type;
+
+ /* Do we at least have room for a macinfo type byte? */
+ if (mac_ptr >= mac_end)
+ {
+ dwarf2_macros_too_long_complaint ();
+ return;
+ }
+
+ macinfo_type = read_1_byte (abfd, mac_ptr);
+ mac_ptr++;
+
+ switch (macinfo_type)
+ {
+ /* A zero macinfo type indicates the end of the macro
+ information. */
+ case 0:
+ return;
+
+ case DW_MACINFO_define:
+ case DW_MACINFO_undef:
+ {
+ int bytes_read;
+ int line;
+ char *body;
+
+ line = read_unsigned_leb128 (abfd, mac_ptr, &bytes_read);
+ mac_ptr += bytes_read;
+ body = read_string (abfd, mac_ptr, &bytes_read);
+ mac_ptr += bytes_read;
+
+ if (! current_file)
+ complaint (&symfile_complaints,
+ "debug info gives macro %s outside of any file: %s",
+ macinfo_type ==
+ DW_MACINFO_define ? "definition" : macinfo_type ==
+ DW_MACINFO_undef ? "undefinition" :
+ "something-or-other", body);
+ else
+ {
+ if (macinfo_type == DW_MACINFO_define)
+ parse_macro_definition (current_file, line, body);
+ else if (macinfo_type == DW_MACINFO_undef)
+ macro_undef (current_file, line, body);
+ }
+ }
+ break;
+
+ case DW_MACINFO_start_file:
+ {
+ int bytes_read;
+ int line, file;
+
+ line = read_unsigned_leb128 (abfd, mac_ptr, &bytes_read);
+ mac_ptr += bytes_read;
+ file = read_unsigned_leb128 (abfd, mac_ptr, &bytes_read);
+ mac_ptr += bytes_read;
+
+ current_file = macro_start_file (file, line,
+ current_file, comp_dir,
+ lh, objfile);
+ }
+ break;
+
+ case DW_MACINFO_end_file:
+ if (! current_file)
+ complaint (&symfile_complaints,
+ "macro debug info has an unmatched `close_file' directive");
+ else
+ {
+ current_file = current_file->included_by;
+ if (! current_file)
+ {
+ enum dwarf_macinfo_record_type next_type;
+
+ /* GCC circa March 2002 doesn't produce the zero
+ type byte marking the end of the compilation
+ unit. Complain if it's not there, but exit no
+ matter what. */
+
+ /* Do we at least have room for a macinfo type byte? */
+ if (mac_ptr >= mac_end)
+ {
+ dwarf2_macros_too_long_complaint ();
+ return;
+ }
+
+ /* We don't increment mac_ptr here, so this is just
+ a look-ahead. */
+ next_type = read_1_byte (abfd, mac_ptr);
+ if (next_type != 0)
+ complaint (&symfile_complaints,
+ "no terminating 0-type entry for macros in `.debug_macinfo' section");
+
+ return;
+ }
+ }
+ break;
+
+ case DW_MACINFO_vendor_ext:
+ {
+ int bytes_read;
+ int constant;
+ char *string;
+
+ constant = read_unsigned_leb128 (abfd, mac_ptr, &bytes_read);
+ mac_ptr += bytes_read;
+ string = read_string (abfd, mac_ptr, &bytes_read);
+ mac_ptr += bytes_read;
+
+ /* We don't recognize any vendor extensions. */
+ }
+ break;
+ }
+ }
+}
+
+/* Check if the attribute's form is a DW_FORM_block*
+ if so return true else false. */
+static int
+attr_form_is_block (struct attribute *attr)
+{
+ return (attr == NULL ? 0 :
+ attr->form == DW_FORM_block1
+ || attr->form == DW_FORM_block2
+ || attr->form == DW_FORM_block4
+ || attr->form == DW_FORM_block);
+}
+
+static void
+dwarf2_symbol_mark_computed (struct attribute *attr, struct symbol *sym,
+ const struct comp_unit_head *cu_header,
+ struct objfile *objfile)
+{
+ if (attr->form == DW_FORM_data4 || attr->form == DW_FORM_data8)
+ {
+ struct dwarf2_loclist_baton *baton;
+
+ baton = obstack_alloc (&objfile->symbol_obstack,
+ sizeof (struct dwarf2_loclist_baton));
+ baton->objfile = objfile;
+
+ /* 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 = dwarf_loc_size - DW_UNSND (attr);
+ baton->data = dwarf_loc_buffer + DW_UNSND (attr);
+ baton->base_address = cu_header->base_address;
+ if (cu_header->base_known == 0)
+ complaint (&symfile_complaints,
+ "Location list used without specifying the CU base address.");
+
+ SYMBOL_LOCATION_FUNCS (sym) = &dwarf2_loclist_funcs;
+ SYMBOL_LOCATION_BATON (sym) = baton;
+ }
+ else
+ {
+ struct dwarf2_locexpr_baton *baton;
+
+ baton = obstack_alloc (&objfile->symbol_obstack,
+ sizeof (struct dwarf2_locexpr_baton));
+ baton->objfile = objfile;
+
+ if (attr_form_is_block (attr))
+ {
+ /* Note that we're just copying the block's data pointer
+ here, not the actual data. We're still pointing into the
+ dwarf_info_buffer for SYM's objfile; right now we never
+ release that buffer, but when we do clean up properly
+ this may need to change. */
+ baton->size = DW_BLOCK (attr)->size;
+ baton->data = DW_BLOCK (attr)->data;
+ }
+ else
+ {
+ dwarf2_invalid_attrib_class_complaint ("location description",
+ SYMBOL_NATURAL_NAME (sym));
+ baton->size = 0;
+ baton->data = NULL;
+ }
+
+ SYMBOL_LOCATION_FUNCS (sym) = &dwarf2_locexpr_funcs;
+ SYMBOL_LOCATION_BATON (sym) = baton;
+ }
+}
projects / deliverable / binutils-gdb.git / blobdiff