#include "defs.h"
#include "symtab.h"
#include "gdbtypes.h"
#include "breakpoint.h"
#include "bfd.h"
#include "symfile.h"
#include "objfiles.h"
#include "buildsym.h"
#include "obstack.h"
#include "gdb_string.h"
#include "dst.h"
CORE_ADDR cur_src_start_addr, cur_src_end_addr;
dst_sec blocks_info, lines_info, symbols_info;
static struct linetable *line_vector;
static int line_vector_index;
static int prev_line_number;
static int line_vector_length;
static int init_dst_sections (int);
static void read_dst_symtab (struct objfile *);
static void find_dst_sections (bfd *, sec_ptr, PTR);
static void dst_symfile_init (struct objfile *);
static void dst_new_init (struct objfile *);
static void dst_symfile_read (struct objfile *, int);
static void dst_symfile_finish (struct objfile *);
static void dst_end_symtab (struct objfile *);
static void complete_symtab (char *, CORE_ADDR, unsigned int);
static void dst_start_symtab (void);
static void dst_record_line (int, CORE_ADDR);
static void
dst_record_line (int line, CORE_ADDR pc)
{
struct linetable_entry *e;
if (line_vector_index + 2 >= line_vector_length)
{
line_vector_length *= 2;
line_vector = (struct linetable *)
xrealloc ((char *) line_vector, sizeof (struct linetable)
+ (line_vector_length
* sizeof (struct linetable_entry)));
}
e = line_vector->item + line_vector_index++;
e->line = line;
e->pc = pc;
}
static void
dst_start_symtab (void)
{
if (line_vector)
xfree (line_vector);
line_vector_index = 0;
line_vector_length = 1000;
prev_line_number = -2;
line_vector = (struct linetable *)
xmalloc (sizeof (struct linetable)
+ line_vector_length * sizeof (struct linetable_entry));
}
static void
complete_symtab (char *name, CORE_ADDR start_addr, unsigned int size)
{
last_source_file = savestring (name, strlen (name));
cur_src_start_addr = start_addr;
cur_src_end_addr = start_addr + size;
if (current_objfile->ei.entry_point >= cur_src_start_addr &&
current_objfile->ei.entry_point < cur_src_end_addr)
{
current_objfile->ei.entry_file_lowpc = cur_src_start_addr;
current_objfile->ei.entry_file_highpc = cur_src_end_addr;
}
}
static void
dst_end_symtab (struct objfile *objfile)
{
register struct symtab *symtab;
register struct blockvector *blockvector;
register struct linetable *lv;
blockvector = make_blockvector (objfile);
symtab = allocate_symtab (last_source_file, objfile);
symtab->blockvector = blockvector;
symtab->free_code = free_linetable;
symtab->free_ptr = 0;
symtab->filename = last_source_file;
symtab->dirname = NULL;
symtab->debugformat = obsavestring ("Apollo DST", 10,
&objfile->symbol_obstack);
lv = line_vector;
lv->nitems = line_vector_index;
symtab->linetable = (struct linetable *)
xrealloc ((char *) lv, (sizeof (struct linetable)
+ lv->nitems * sizeof (struct linetable_entry)));
free_named_symtabs (symtab->filename);
line_vector = 0;
line_vector_length = -1;
last_source_file = NULL;
}
static void
dst_symfile_init (struct objfile *objfile)
{
asection *section;
bfd *abfd = objfile->obfd;
init_entry_point_info (objfile);
}
static void
find_dst_sections (bfd *abfd, sec_ptr asect, PTR vpinfo)
{
int size, count;
long base;
file_ptr offset, maxoff;
dst_sec *section;
size = asect->_raw_size;
offset = asect->filepos;
base = asect->vma;
section = NULL;
if (!strcmp (asect->name, ".blocks"))
section = &blocks_info;
else if (!strcmp (asect->name, ".lines"))
section = &lines_info;
else if (!strcmp (asect->name, ".symbols"))
section = &symbols_info;
if (!section)
return;
section->size = size;
section->position = offset;
section->base = base;
}
static bfd *symfile_bfd;
static void
dst_symfile_read (struct objfile *objfile, int mainline)
{
bfd *abfd = objfile->obfd;
char *name = bfd_get_filename (abfd);
int desc;
register int val;
int num_symbols;
int symtab_offset;
int stringtab_offset;
symfile_bfd = abfd;
desc = fileno ((FILE *) (abfd->iostream));
bfd_map_over_sections (abfd, find_dst_sections, (PTR) NULL);
val = init_dst_sections (desc);
if (val < 0)
error ("\"%s\": error reading debugging symbol tables\n", name);
init_minimal_symbol_collection ();
make_cleanup_discard_minimal_symbols ();
read_dst_symtab (objfile);
{
struct symtab *s;
for (s = objfile->symtabs; s != NULL; s = s->next)
{
sort_symtab_syms (s);
}
}
install_minimal_symbols (objfile);
}
static void
dst_new_init (struct objfile *ignore)
{
}
static void
dst_symfile_finish (struct objfile *objfile)
{
}
static int
get_dst_line (signed char **buffer, long *pc)
{
static last_pc = 0;
static long last_line = 0;
static int last_file = 0;
dst_ln_entry_ptr_t entry;
int size;
dst_src_loc_t *src_loc;
if (*pc != -1)
{
last_pc = *pc;
*pc = -1;
}
entry = (dst_ln_entry_ptr_t) * buffer;
while (dst_ln_ln_delta (*entry) == dst_ln_escape_flag)
{
switch (entry->esc.esc_code)
{
case dst_ln_pad:
size = 1;
break;
case dst_ln_file:
size = 5;
src_loc = (dst_src_loc_t *) (*buffer + 1);
last_line = src_loc->line_number;
last_file = src_loc->file_index;
break;
case dst_ln_dln1_dpc1:
last_line += (*buffer)[1];
last_pc += 2 * (unsigned char) (*buffer)[2];
dst_record_line (last_line, last_pc);
size = 3;
break;
case dst_ln_dln2_dpc2:
last_line += *(short *) (*buffer + 1);
last_pc += 2 * (*(short *) (*buffer + 3));
size = 5;
dst_record_line (last_line, last_pc);
break;
case dst_ln_ln4_pc4:
last_line = *(unsigned long *) (*buffer + 1);
last_pc = *(unsigned long *) (*buffer + 5);
size = 9;
dst_record_line (last_line, last_pc);
break;
case dst_ln_dln1_dpc0:
size = 2;
last_line += (*buffer)[1];
break;
case dst_ln_ln_off_1:
size = 1;
break;
case dst_ln_ln_off:
size = 2;
break;
case dst_ln_entry:
size = 2;
break;
case dst_ln_exit:
size = 1;
break;
case dst_ln_stmt_end:
size = 5;
break;
case dst_ln_escape_11:
case dst_ln_escape_12:
case dst_ln_escape_13:
size = 1;
break;
case dst_ln_nxt_byte:
return 0;
break;
case dst_ln_end:
return 0;
}
*buffer += (size < 0) ? -size : size;
entry = (dst_ln_entry_ptr_t) * buffer;
}
last_line += dst_ln_ln_delta (*entry);
last_pc += entry->delta.pc_delta * 2;
(*buffer)++;
dst_record_line (last_line, last_pc);
return 1;
}
static void
enter_all_lines (char *buffer, long address)
{
if (buffer)
while (get_dst_line (&buffer, &address));
}
static int
get_dst_entry (char *buffer, dst_rec_ptr_t *ret_entry)
{
int size;
dst_rec_ptr_t entry;
static int last_type;
int ar_size;
static unsigned lu3;
entry = (dst_rec_ptr_t) buffer;
switch (entry->rec_type)
{
case dst_typ_pad:
size = 0;
break;
case dst_typ_comp_unit:
size = sizeof (DST_comp_unit (entry));
break;
case dst_typ_section_tab:
size = sizeof (DST_section_tab (entry))
+ ((int) DST_section_tab (entry).number_of_sections
- dst_dummy_array_size) * sizeof (long);
break;
case dst_typ_file_tab:
size = sizeof (DST_file_tab (entry))
+ ((int) DST_file_tab (entry).number_of_files
- dst_dummy_array_size) * sizeof (dst_file_desc_t);
break;
case dst_typ_block:
size = sizeof (DST_block (entry))
+ ((int) DST_block (entry).n_of_code_ranges
- dst_dummy_array_size) * sizeof (dst_code_range_t);
break;
case dst_typ_5:
size = -1;
break;
case dst_typ_var:
size = sizeof (DST_var (entry)) -
sizeof (dst_var_loc_long_t) * dst_dummy_array_size +
DST_var (entry).no_of_locs *
(DST_var (entry).short_locs ?
sizeof (dst_var_loc_short_t) :
sizeof (dst_var_loc_long_t));
break;
case dst_typ_pointer:
size = sizeof (DST_pointer (entry));
break;
case dst_typ_array:
size = sizeof (DST_array (entry));
break;
case dst_typ_subrange:
size = sizeof (DST_subrange (entry));
break;
case dst_typ_set:
size = sizeof (DST_set (entry));
break;
case dst_typ_implicit_enum:
size = sizeof (DST_implicit_enum (entry))
+ ((int) DST_implicit_enum (entry).nelems
- dst_dummy_array_size) * sizeof (dst_rel_offset_t);
break;
case dst_typ_explicit_enum:
size = sizeof (DST_explicit_enum (entry))
+ ((int) DST_explicit_enum (entry).nelems
- dst_dummy_array_size) * sizeof (dst_enum_elem_t);
break;
case dst_typ_short_rec:
size = sizeof (DST_short_rec (entry))
+ DST_short_rec (entry).nfields * sizeof (dst_short_field_t)
- dst_dummy_array_size * sizeof (dst_field_t);
break;
case dst_typ_short_union:
size = sizeof (DST_short_union (entry))
+ DST_short_union (entry).nfields * sizeof (dst_short_field_t)
- dst_dummy_array_size * sizeof (dst_field_t);
break;
case dst_typ_file:
size = sizeof (DST_file (entry));
break;
case dst_typ_offset:
size = sizeof (DST_offset (entry));
break;
case dst_typ_alias:
size = sizeof (DST_alias (entry));
break;
case dst_typ_signature:
size = sizeof (DST_signature (entry)) +
((int) DST_signature (entry).nargs -
dst_dummy_array_size) * sizeof (dst_arg_t);
break;
case dst_typ_21:
size = -1;
break;
case dst_typ_old_label:
size = sizeof (DST_old_label (entry));
break;
case dst_typ_scope:
size = sizeof (DST_scope (entry));
break;
case dst_typ_end_scope:
size = 0;
break;
case dst_typ_25:
case dst_typ_26:
size = -1;
break;
case dst_typ_string_tab:
case dst_typ_global_name_tab:
size = sizeof (DST_string_tab (entry))
+ DST_string_tab (entry).length
- dst_dummy_array_size;
break;
case dst_typ_forward:
size = sizeof (DST_forward (entry));
get_dst_entry ((char *) entry + DST_forward (entry).rec_off, &entry);
break;
case dst_typ_aux_size:
size = sizeof (DST_aux_size (entry));
break;
case dst_typ_aux_align:
size = sizeof (DST_aux_align (entry));
break;
case dst_typ_aux_field_size:
size = sizeof (DST_aux_field_size (entry));
break;
case dst_typ_aux_field_off:
size = sizeof (DST_aux_field_off (entry));
break;
case dst_typ_aux_field_align:
size = sizeof (DST_aux_field_align (entry));
break;
case dst_typ_aux_qual:
size = sizeof (DST_aux_qual (entry));
break;
case dst_typ_aux_var_bound:
size = sizeof (DST_aux_var_bound (entry));
break;
case dst_typ_extension:
size = DST_extension (entry).rec_size;
break;
case dst_typ_string:
size = sizeof (DST_string (entry));
break;
case dst_typ_old_entry:
size = 48;
break;
case dst_typ_const:
size = sizeof (DST_const (entry))
+ DST_const (entry).value.length
- sizeof (DST_const (entry).value.val);
break;
case dst_typ_reference:
size = sizeof (DST_reference (entry));
break;
case dst_typ_old_record:
case dst_typ_old_union:
case dst_typ_record:
case dst_typ_union:
size = sizeof (DST_record (entry))
+ ((int) DST_record (entry).nfields
- dst_dummy_array_size) * sizeof (dst_field_t);
break;
case dst_typ_aux_type_deriv:
size = sizeof (DST_aux_type_deriv (entry));
break;
case dst_typ_locpool:
size = sizeof (DST_locpool (entry))
+ ((int) DST_locpool (entry).length -
dst_dummy_array_size);
break;
case dst_typ_variable:
size = sizeof (DST_variable (entry));
break;
case dst_typ_label:
size = sizeof (DST_label (entry));
break;
case dst_typ_entry:
size = sizeof (DST_entry (entry));
break;
case dst_typ_aux_lifetime:
size = sizeof (DST_aux_lifetime (entry));
break;
case dst_typ_aux_ptr_base:
size = sizeof (DST_aux_ptr_base (entry));
break;
case dst_typ_aux_src_range:
size = sizeof (DST_aux_src_range (entry));
break;
case dst_typ_aux_reg_val:
size = sizeof (DST_aux_reg_val (entry));
break;
case dst_typ_aux_unit_names:
size = sizeof (DST_aux_unit_names (entry))
+ ((int) DST_aux_unit_names (entry).number_of_names
- dst_dummy_array_size) * sizeof (dst_rel_offset_t);
break;
case dst_typ_aux_sect_info:
size = sizeof (DST_aux_sect_info (entry))
+ ((int) DST_aux_sect_info (entry).number_of_refs
- dst_dummy_array_size) * sizeof (dst_sect_ref_t);
break;
default:
size = -1;
break;
}
if (size == -1)
{
fprintf_unfiltered (gdb_stderr, "Warning: unexpected DST entry type (%d) found\nLast valid entry was of type: %d\n",
(int) entry->rec_type,
last_type);
fprintf_unfiltered (gdb_stderr, "Last unknown_3 value: %d\n", lu3);
size = 0;
}
else
last_type = entry->rec_type;
if (size & 1)
size++;
size += 2;
*ret_entry = entry;
return size;
}
static int
next_dst_entry (char **buffer, dst_rec_ptr_t *entry, dst_sec *table)
{
if (*buffer - table->buffer >= table->size)
{
*entry = NULL;
return 0;
}
*buffer += get_dst_entry (*buffer, entry);
return 1;
}
#define NEXT_BLK(a, b) next_dst_entry(a, b, &blocks_info)
#define NEXT_SYM(a, b) next_dst_entry(a, b, &symbols_info)
#define DST_OFFSET(a, b) ((char *) (a) + (b))
static dst_rec_ptr_t section_table = NULL;
char *
get_sec_ref (dst_sect_ref_t *ref)
{
dst_sec *section = NULL;
long offset;
if (!section_table || !ref->sect_index)
return NULL;
offset = DST_section_tab (section_table).section_base[ref->sect_index - 1]
+ ref->sect_offset;
if (offset >= blocks_info.base &&
offset < blocks_info.base + blocks_info.size)
section = &blocks_info;
else if (offset >= symbols_info.base &&
offset < symbols_info.base + symbols_info.size)
section = &symbols_info;
else if (offset >= lines_info.base &&
offset < lines_info.base + lines_info.size)
section = &lines_info;
if (!section)
return NULL;
return section->buffer + (offset - section->base);
}
CORE_ADDR
dst_get_addr (int section, long offset)
{
if (!section_table || !section)
return 0;
return DST_section_tab (section_table).section_base[section - 1] + offset;
}
CORE_ADDR
dst_sym_addr (dst_sect_ref_t *ref)
{
if (!section_table || !ref->sect_index)
return 0;
return DST_section_tab (section_table).section_base[ref->sect_index - 1]
+ ref->sect_offset;
}
static struct type *
create_new_type (struct objfile *objfile)
{
struct type *type;
type = (struct type *)
obstack_alloc (&objfile->symbol_obstack, sizeof (struct type));
memset (type, 0, sizeof (struct type));
return type;
}
static struct symbol *
create_new_symbol (struct objfile *objfile, char *name)
{
struct symbol *sym = (struct symbol *)
obstack_alloc (&objfile->symbol_obstack, sizeof (struct symbol));
memset (sym, 0, sizeof (struct symbol));
SYMBOL_NAME (sym) = obsavestring (name, strlen (name),
&objfile->symbol_obstack);
SYMBOL_VALUE (sym) = 0;
SYMBOL_NAMESPACE (sym) = VAR_NAMESPACE;
SYMBOL_CLASS (sym) = LOC_BLOCK;
return sym;
};
static struct type *decode_dst_type (struct objfile *, dst_rec_ptr_t);
static struct type *
decode_type_desc (struct objfile *objfile, dst_type_t *type_desc,
dst_rec_ptr_t base)
{
struct type *type;
dst_rec_ptr_t entry;
if (type_desc->std_type.user_defined_type)
{
entry = (dst_rec_ptr_t) DST_OFFSET (base,
dst_user_type_offset (*type_desc));
type = decode_dst_type (objfile, entry);
}
else
{
switch (type_desc->std_type.dtc)
{
case dst_int8_type:
type = builtin_type_signed_char;
break;
case dst_int16_type:
type = builtin_type_short;
break;
case dst_int32_type:
type = builtin_type_long;
break;
case dst_uint8_type:
type = builtin_type_unsigned_char;
break;
case dst_uint16_type:
type = builtin_type_unsigned_short;
break;
case dst_uint32_type:
type = builtin_type_unsigned_long;
break;
case dst_real32_type:
type = builtin_type_float;
break;
case dst_real64_type:
type = builtin_type_double;
break;
case dst_complex_type:
type = builtin_type_complex;
break;
case dst_dcomplex_type:
type = builtin_type_double_complex;
break;
case dst_bool8_type:
type = builtin_type_char;
break;
case dst_bool16_type:
type = builtin_type_short;
break;
case dst_bool32_type:
type = builtin_type_long;
break;
case dst_char_type:
type = builtin_type_char;
break;
case dst_string_type:
type = builtin_type_void;
break;
case dst_ptr_type:
type = builtin_type_void;
break;
case dst_set_type:
type = builtin_type_void;
break;
case dst_proc_type:
type = builtin_type_void;
break;
case dst_func_type:
type = builtin_type_void;
break;
case dst_void_type:
type = builtin_type_void;
break;
case dst_uchar_type:
type = builtin_type_unsigned_char;
break;
default:
type = builtin_type_void;
break;
}
}
return type;
}
struct structure_list
{
struct structure_list *next;
struct type *type;
};
static struct structure_list *struct_list = NULL;
static struct type *
find_dst_structure (char *name)
{
struct structure_list *element;
for (element = struct_list; element; element = element->next)
if (!strcmp (name, TYPE_NAME (element->type)))
return element->type;
return NULL;
}
static struct type *
decode_dst_structure (struct objfile *objfile, dst_rec_ptr_t entry, int code,
int version)
{
struct type *type, *child_type;
char *struct_name;
char *name, *field_name;
int i;
int fieldoffset, fieldsize;
dst_type_t type_desc;
struct structure_list *element;
struct_name = DST_OFFSET (entry, DST_record (entry).noffset);
name = concat ((code == TYPE_CODE_UNION) ? "union " : "struct ",
struct_name, NULL);
type = find_dst_structure (name);
if (type)
{
xfree (name);
return type;
}
type = create_new_type (objfile);
TYPE_NAME (type) = obstack_copy0 (&objfile->symbol_obstack,
name, strlen (name));
xfree (name);
TYPE_CODE (type) = code;
TYPE_LENGTH (type) = DST_record (entry).size;
TYPE_NFIELDS (type) = DST_record (entry).nfields;
TYPE_FIELDS (type) = (struct field *)
obstack_alloc (&objfile->symbol_obstack, sizeof (struct field) *
DST_record (entry).nfields);
fieldoffset = fieldsize = 0;
INIT_CPLUS_SPECIFIC (type);
element = (struct structure_list *)
xmalloc (sizeof (struct structure_list));
element->type = type;
element->next = struct_list;
struct_list = element;
for (i = 0; i < DST_record (entry).nfields; i++)
{
switch (version)
{
case 2:
field_name = DST_OFFSET (entry,
DST_record (entry).f.ofields[i].noffset);
fieldoffset = DST_record (entry).f.ofields[i].foffset * 8 +
DST_record (entry).f.ofields[i].bit_offset;
fieldsize = DST_record (entry).f.ofields[i].size;
type_desc = DST_record (entry).f.ofields[i].type_desc;
break;
case 1:
field_name = DST_OFFSET (entry,
DST_record (entry).f.fields[i].noffset);
type_desc = DST_record (entry).f.fields[i].type_desc;
switch (DST_record (entry).f.fields[i].f.field_loc.format_tag)
{
case dst_field_byte:
fieldoffset = DST_record (entry).f.
fields[i].f.field_byte.offset * 8;
fieldsize = -1;
break;
case dst_field_bit:
fieldoffset = DST_record (entry).f.
fields[i].f.field_bit.byte_offset * 8 +
DST_record (entry).f.
fields[i].f.field_bit.bit_offset;
fieldsize = DST_record (entry).f.
fields[i].f.field_bit.nbits;
break;
case dst_field_loc:
fieldoffset += fieldsize;
fieldsize = -1;
break;
}
break;
case 0:
field_name = DST_OFFSET (entry,
DST_record (entry).f.sfields[i].noffset);
fieldoffset = DST_record (entry).f.sfields[i].foffset;
type_desc = DST_record (entry).f.sfields[i].type_desc;
if (i < DST_record (entry).nfields - 1)
fieldsize = DST_record (entry).f.sfields[i + 1].foffset;
else
fieldsize = DST_record (entry).size;
fieldsize -= fieldoffset;
fieldoffset *= 8;
fieldsize *= 8;
}
TYPE_FIELDS (type)[i].name =
obstack_copy0 (&objfile->symbol_obstack,
field_name, strlen (field_name));
TYPE_FIELDS (type)[i].type = decode_type_desc (objfile,
&type_desc,
entry);
if (fieldsize == -1)
fieldsize = TYPE_LENGTH (TYPE_FIELDS (type)[i].type) *
8;
TYPE_FIELDS (type)[i].bitsize = fieldsize;
TYPE_FIELDS (type)[i].bitpos = fieldoffset;
}
return type;
}
static struct type *
decode_dst_type (struct objfile *objfile, dst_rec_ptr_t entry)
{
struct type *child_type, *type, *range_type, *index_type;
switch (entry->rec_type)
{
case dst_typ_var:
return decode_type_desc (objfile,
&DST_var (entry).type_desc,
entry);
break;
case dst_typ_variable:
return decode_type_desc (objfile,
&DST_variable (entry).type_desc,
entry);
break;
case dst_typ_short_rec:
return decode_dst_structure (objfile, entry, TYPE_CODE_STRUCT, 0);
case dst_typ_short_union:
return decode_dst_structure (objfile, entry, TYPE_CODE_UNION, 0);
case dst_typ_union:
return decode_dst_structure (objfile, entry, TYPE_CODE_UNION, 1);
case dst_typ_record:
return decode_dst_structure (objfile, entry, TYPE_CODE_STRUCT, 1);
case dst_typ_old_union:
return decode_dst_structure (objfile, entry, TYPE_CODE_UNION, 2);
case dst_typ_old_record:
return decode_dst_structure (objfile, entry, TYPE_CODE_STRUCT, 2);
case dst_typ_pointer:
return make_pointer_type (
decode_type_desc (objfile,
&DST_pointer (entry).type_desc,
entry),
NULL);
case dst_typ_array:
child_type = decode_type_desc (objfile,
&DST_pointer (entry).type_desc,
entry);
index_type = lookup_fundamental_type (objfile,
FT_INTEGER);
range_type = create_range_type ((struct type *) NULL,
index_type, DST_array (entry).lo_bound,
DST_array (entry).hi_bound);
return create_array_type ((struct type *) NULL, child_type,
range_type);
case dst_typ_alias:
return decode_type_desc (objfile,
&DST_alias (entry).type_desc,
entry);
default:
return builtin_type_int;
}
}
struct symbol_list
{
struct symbol_list *next;
struct symbol *symbol;
};
static struct symbol_list *dst_global_symbols = NULL;
static int total_globals = 0;
static void
decode_dst_locstring (char *locstr, struct symbol *sym)
{
dst_loc_entry_t *entry, *next_entry;
CORE_ADDR temp;
int count = 0;
while (1)
{
if (count++ == 100)
{
fprintf_unfiltered (gdb_stderr, "Error reading locstring\n");
break;
}
entry = (dst_loc_entry_t *) locstr;
next_entry = (dst_loc_entry_t *) (locstr + 1);
switch (entry->header.code)
{
case dst_lsc_end:
return;
case dst_lsc_indirect:
if (entry->header.arg < 6)
{
SYMBOL_CLASS (sym) = LOC_REGISTER;
SYMBOL_VALUE (sym) = entry->header.arg + 8;
}
locstr++;
break;
case dst_lsc_dreg:
SYMBOL_CLASS (sym) = LOC_REGISTER;
SYMBOL_VALUE (sym) = entry->header.arg;
locstr++;
break;
case dst_lsc_section:
SYMBOL_VALUE (sym) = dst_get_addr (entry->header.arg + 1, 0);
locstr++;
break;
case dst_lsc_sec_byte:
SYMBOL_VALUE (sym) = dst_get_addr (locstr[1] + 1, 0);
locstr += 2;
break;
case dst_lsc_add:
case dst_lsc_sub:
temp = (entry->header.arg + 1) * 2;
locstr++;
if (*locstr == dst_multiply_256)
{
temp <<= 8;
locstr++;
}
switch (entry->header.code)
{
case dst_lsc_add:
if (SYMBOL_CLASS (sym) == LOC_LOCAL)
SYMBOL_CLASS (sym) = LOC_ARG;
SYMBOL_VALUE (sym) += temp;
break;
case dst_lsc_sub:
SYMBOL_VALUE (sym) -= temp;
break;
}
break;
case dst_lsc_add_byte:
case dst_lsc_sub_byte:
switch (entry->header.arg & 0x03)
{
case 1:
temp = (unsigned char) locstr[1];
locstr += 2;
break;
case 2:
temp = *(unsigned short *) (locstr + 1);
locstr += 3;
break;
case 3:
temp = *(unsigned long *) (locstr + 1);
locstr += 5;
break;
}
if (*locstr == dst_multiply_256)
{
temp <<= 8;
locstr++;
}
switch (entry->header.code)
{
case dst_lsc_add_byte:
if (SYMBOL_CLASS (sym) == LOC_LOCAL)
SYMBOL_CLASS (sym) = LOC_ARG;
SYMBOL_VALUE (sym) += temp;
break;
case dst_lsc_sub_byte:
SYMBOL_VALUE (sym) -= temp;
break;
}
break;
case dst_lsc_sbreg:
if (next_entry->header.code != dst_lsc_indirect)
{
SYMBOL_VALUE (sym) = 0;
SYMBOL_CLASS (sym) = LOC_STATIC;
return;
}
SYMBOL_VALUE (sym) = 0;
SYMBOL_CLASS (sym) = LOC_LOCAL;
locstr++;
break;
default:
SYMBOL_VALUE (sym) = 0;
SYMBOL_CLASS (sym) = LOC_STATIC;
return;
}
}
}
static struct symbol_list *
process_dst_symbols (struct objfile *objfile, dst_rec_ptr_t entry, char *name,
int *nsyms_ret)
{
struct symbol_list *list = NULL, *element;
struct symbol *sym;
char *symname;
int nsyms = 0;
char *location;
long line;
dst_type_t symtype;
struct type *type;
dst_var_attr_t attr;
dst_var_loc_t loc_type;
unsigned loc_index;
long loc_value;
if (!entry)
{
*nsyms_ret = 0;
return NULL;
}
location = (char *) entry;
while (NEXT_SYM (&location, &entry) &&
entry->rec_type != dst_typ_end_scope)
{
if (entry->rec_type == dst_typ_var)
{
if (DST_var (entry).short_locs)
{
loc_type = DST_var (entry).locs.shorts[0].loc_type;
loc_index = DST_var (entry).locs.shorts[0].loc_index;
loc_value = DST_var (entry).locs.shorts[0].location;
}
else
{
loc_type = DST_var (entry).locs.longs[0].loc_type;
loc_index = DST_var (entry).locs.longs[0].loc_index;
loc_value = DST_var (entry).locs.longs[0].location;
}
if (loc_type == dst_var_loc_external)
continue;
symname = DST_OFFSET (entry, DST_var (entry).noffset);
line = DST_var (entry).src_loc.line_number;
symtype = DST_var (entry).type_desc;
attr = DST_var (entry).attributes;
}
else if (entry->rec_type == dst_typ_variable)
{
symname = DST_OFFSET (entry,
DST_variable (entry).noffset);
line = DST_variable (entry).src_loc.line_number;
symtype = DST_variable (entry).type_desc;
attr = DST_variable (entry).attributes;
}
else
{
continue;
}
if (symname && name && !strcmp (symname, name))
continue;
sym = create_new_symbol (objfile, symname);
if ((attr & (1 << dst_var_attr_global)) ||
(attr & (1 << dst_var_attr_static)))
SYMBOL_CLASS (sym) = LOC_STATIC;
else
SYMBOL_CLASS (sym) = LOC_LOCAL;
SYMBOL_LINE (sym) = line;
SYMBOL_TYPE (sym) = decode_type_desc (objfile, &symtype,
entry);
SYMBOL_VALUE (sym) = 0;
switch (entry->rec_type)
{
case dst_typ_var:
switch (loc_type)
{
case dst_var_loc_abs:
SYMBOL_VALUE_ADDRESS (sym) = loc_value;
break;
case dst_var_loc_sect_off:
case dst_var_loc_ind_sect_off:
SYMBOL_VALUE_ADDRESS (sym) = dst_get_addr (
loc_index,
loc_value);
break;
case dst_var_loc_ind_reg_rel:
case dst_var_loc_reg_rel:
if (loc_index)
{
sym->aux_value.basereg = loc_index;
}
SYMBOL_VALUE (sym) = loc_value;
if (loc_value > 0 &&
SYMBOL_CLASS (sym) == LOC_BASEREG)
SYMBOL_CLASS (sym) = LOC_BASEREG_ARG;
break;
case dst_var_loc_reg:
SYMBOL_VALUE (sym) = loc_index;
SYMBOL_CLASS (sym) = LOC_REGISTER;
break;
}
break;
case dst_typ_variable:
if (DST_variable (entry).loffset == -1)
continue;
decode_dst_locstring (DST_OFFSET (entry,
DST_variable (entry).loffset),
sym);
}
element = (struct symbol_list *)
xmalloc (sizeof (struct symbol_list));
if (attr & (1 << dst_var_attr_global))
{
element->next = dst_global_symbols;
dst_global_symbols = element;
total_globals++;
}
else
{
element->next = list;
list = element;
nsyms++;
}
element->symbol = sym;
}
*nsyms_ret = nsyms;
return list;
}
static struct symbol *
process_dst_function (struct objfile *objfile, dst_rec_ptr_t entry, char *name,
CORE_ADDR address)
{
struct symbol *sym;
struct type *type, *ftype;
dst_rec_ptr_t sym_entry, typ_entry;
char *location;
struct symbol_list *element;
type = builtin_type_int;
sym = create_new_symbol (objfile, name);
SYMBOL_CLASS (sym) = LOC_BLOCK;
if (entry)
{
location = (char *) entry;
do
{
NEXT_SYM (&location, &sym_entry);
}
while (sym_entry && sym_entry->rec_type != dst_typ_signature);
if (sym_entry)
{
SYMBOL_LINE (sym) =
DST_signature (sym_entry).src_loc.line_number;
if (DST_signature (sym_entry).result)
{
typ_entry = (dst_rec_ptr_t)
DST_OFFSET (sym_entry,
DST_signature (sym_entry).result);
type = decode_dst_type (objfile, typ_entry);
}
}
}
if (!type->function_type)
{
ftype = create_new_type (objfile);
type->function_type = ftype;
ftype->target_type = type;
ftype->code = TYPE_CODE_FUNC;
}
SYMBOL_TYPE (sym) = type->function_type;
element = (struct symbol_list *)
xmalloc (sizeof (struct symbol_list));
element->next = dst_global_symbols;
dst_global_symbols = element;
total_globals++;
element->symbol = sym;
return sym;
}
static struct block *
process_dst_block (struct objfile *objfile, dst_rec_ptr_t entry)
{
struct block *block;
struct symbol *function = NULL;
CORE_ADDR address;
long size;
char *name;
dst_rec_ptr_t child_entry, symbol_entry;
struct block *child_block;
int total_symbols = 0;
char fake_name[20];
static long fake_seq = 0;
struct symbol_list *symlist, *nextsym;
int symnum;
if (DST_block (entry).noffset)
name = DST_OFFSET (entry, DST_block (entry).noffset);
else
name = NULL;
if (DST_block (entry).n_of_code_ranges)
{
address = dst_sym_addr (
&DST_block (entry).code_ranges[0].code_start);
size = DST_block (entry).code_ranges[0].code_size;
}
else
{
address = -1;
size = 0;
}
symbol_entry = (dst_rec_ptr_t) get_sec_ref (&DST_block (entry).symbols_start);
switch (DST_block (entry).block_type)
{
case dst_block_procedure:
case dst_block_function:
case dst_block_subroutine:
case dst_block_program:
prim_record_minimal_symbol (name, address, mst_text, objfile);
function = process_dst_function (
objfile,
symbol_entry,
name,
address);
enter_all_lines (get_sec_ref (&DST_block (entry).code_ranges[0].lines_start), address);
break;
case dst_block_block_data:
break;
default:
sprintf (fake_name, "block_%08lx", fake_seq++);
function = process_dst_function (
objfile, NULL, fake_name, address);
break;
}
symlist = process_dst_symbols (objfile, symbol_entry,
name, &total_symbols);
block = (struct block *)
obstack_alloc (&objfile->symbol_obstack,
sizeof (struct block) +
(total_symbols - 1) * sizeof (struct symbol *));
symnum = 0;
while (symlist)
{
nextsym = symlist->next;
block->sym[symnum] = symlist->symbol;
xfree (symlist);
symlist = nextsym;
symnum++;
}
BLOCK_NSYMS (block) = total_symbols;
BLOCK_START (block) = address;
BLOCK_END (block) = address + size;
BLOCK_SUPERBLOCK (block) = 0;
if (function)
{
SYMBOL_BLOCK_VALUE (function) = block;
BLOCK_FUNCTION (block) = function;
}
else
BLOCK_FUNCTION (block) = 0;
if (DST_block (entry).child_block_off)
{
child_entry = (dst_rec_ptr_t) DST_OFFSET (entry,
DST_block (entry).child_block_off);
while (child_entry)
{
child_block = process_dst_block (objfile, child_entry);
if (child_block)
{
if (BLOCK_START (child_block) <
BLOCK_START (block) ||
BLOCK_START (block) == -1)
BLOCK_START (block) =
BLOCK_START (child_block);
if (BLOCK_END (child_block) >
BLOCK_END (block) ||
BLOCK_END (block) == -1)
BLOCK_END (block) =
BLOCK_END (child_block);
BLOCK_SUPERBLOCK (child_block) = block;
}
if (DST_block (child_entry).sibling_block_off)
child_entry = (dst_rec_ptr_t) DST_OFFSET (
child_entry,
DST_block (child_entry).sibling_block_off);
else
child_entry = NULL;
}
}
record_pending_block (objfile, block, NULL);
return block;
}
static void
read_dst_symtab (struct objfile *objfile)
{
char *buffer;
dst_rec_ptr_t entry, file_table, root_block;
char *source_file;
struct block *block, *global_block;
int symnum;
struct symbol_list *nextsym;
int module_num = 0;
struct structure_list *element;
current_objfile = objfile;
buffer = blocks_info.buffer;
while (NEXT_BLK (&buffer, &entry))
{
if (entry->rec_type == dst_typ_comp_unit)
{
file_table = (dst_rec_ptr_t) DST_OFFSET (entry,
DST_comp_unit (entry).file_table);
section_table = (dst_rec_ptr_t) DST_OFFSET (entry,
DST_comp_unit (entry).section_table);
root_block = (dst_rec_ptr_t) DST_OFFSET (entry,
DST_comp_unit (entry).root_block_offset);
source_file = DST_OFFSET (file_table,
DST_file_tab (file_table).files[0].noffset);
buffer = DST_OFFSET (entry,
DST_comp_unit (entry).data_size);
dst_start_symtab ();
block = process_dst_block (objfile, root_block);
global_block = (struct block *)
obstack_alloc (&objfile->symbol_obstack,
sizeof (struct block) +
(total_globals - 1) *
sizeof (struct symbol *));
BLOCK_NSYMS (global_block) = total_globals;
for (symnum = 0; symnum < total_globals; symnum++)
{
nextsym = dst_global_symbols->next;
global_block->sym[symnum] =
dst_global_symbols->symbol;
xfree (dst_global_symbols);
dst_global_symbols = nextsym;
}
dst_global_symbols = NULL;
total_globals = 0;
BLOCK_FUNCTION (global_block) = 0;
BLOCK_START (global_block) = BLOCK_START (block);
BLOCK_END (global_block) = BLOCK_END (block);
BLOCK_SUPERBLOCK (global_block) = 0;
BLOCK_SUPERBLOCK (block) = global_block;
record_pending_block (objfile, global_block, NULL);
complete_symtab (source_file,
BLOCK_START (block),
BLOCK_END (block) - BLOCK_START (block));
module_num++;
dst_end_symtab (objfile);
}
}
if (module_num)
prim_record_minimal_symbol ("<end_of_program>",
BLOCK_END (block), mst_text, objfile);
prim_record_minimal_symbol ("<end_of_text>",
(CORE_ADDR) 0x40000000,
mst_text, objfile);
while (struct_list)
{
element = struct_list;
struct_list = element->next;
xfree (element);
}
}
static char *linetab = NULL;
static long linetab_offset;
static unsigned long linetab_size;
static int
init_one_section (int chan, dst_sec *secinfo)
{
if (secinfo->size == 0
|| lseek (chan, secinfo->position, 0) == -1
|| (secinfo->buffer = xmalloc (secinfo->size)) == NULL
|| myread (chan, secinfo->buffer, secinfo->size) == -1)
return 0;
else
return 1;
}
static int
init_dst_sections (int chan)
{
if (!init_one_section (chan, &blocks_info) ||
!init_one_section (chan, &lines_info) ||
!init_one_section (chan, &symbols_info))
return -1;
else
return 0;
}
struct section_offsets dst_symfile_faker =
{0};
void
dst_symfile_offsets (struct objfile *objfile, struct section_addr_info *addrs)
{
objfile->num_sections = 1;
objfile->section_offsets = &dst_symfile_faker;
}
static struct sym_fns dst_sym_fns =
{
(enum bfd_flavour) -2,
dst_new_init,
dst_symfile_init,
dst_symfile_read,
dst_symfile_finish,
dst_symfile_offsets,
NULL
};
void
_initialize_dstread (void)
{
add_symtab_fns (&dst_sym_fns);
}