mirror of
https://github.com/darlinghq/darling-gdb.git
synced 2024-12-13 23:29:03 +00:00
d7a96d6771
takes care of it.
1731 lines
44 KiB
C
1731 lines
44 KiB
C
/* Read apollo DST symbol tables and convert to internal format, for GDB.
|
||
Contributed by Troy Rollo, University of NSW (troy@cbme.unsw.edu.au).
|
||
Copyright 1993 Free Software Foundation, Inc.
|
||
|
||
This file is part of GDB.
|
||
|
||
This program is free software; you can redistribute it and/or modify
|
||
it under the terms of the GNU General Public License as published by
|
||
the Free Software Foundation; either version 2 of the License, or
|
||
(at your option) any later version.
|
||
|
||
This program is distributed in the hope that it will be useful,
|
||
but WITHOUT ANY WARRANTY; without even the implied warranty of
|
||
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
||
GNU General Public License for more details.
|
||
|
||
You should have received a copy of the GNU General Public License
|
||
along with this program; if not, write to the Free Software
|
||
Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. */
|
||
|
||
#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 <string.h>
|
||
|
||
#include "dst.h"
|
||
|
||
CORE_ADDR cur_src_start_addr, cur_src_end_addr;
|
||
dst_sec blocks_info, lines_info, symbols_info;
|
||
|
||
/* Vector of line number information. */
|
||
|
||
static struct linetable *line_vector;
|
||
|
||
/* Index of next entry to go in line_vector_index. */
|
||
|
||
static int line_vector_index;
|
||
|
||
/* Last line number recorded in the line vector. */
|
||
|
||
static int prev_line_number;
|
||
|
||
/* Number of elements allocated for line_vector currently. */
|
||
|
||
static int line_vector_length;
|
||
|
||
static struct blockvector *
|
||
make_blockvector PARAMS ((struct objfile *));
|
||
|
||
static int
|
||
init_dst_sections PARAMS ((int));
|
||
|
||
static void
|
||
read_dst_symtab PARAMS ((struct objfile *));
|
||
|
||
static void
|
||
find_dst_sections PARAMS ((bfd *, sec_ptr, PTR));
|
||
|
||
static void
|
||
dst_symfile_init PARAMS ((struct objfile *));
|
||
|
||
static void
|
||
dst_new_init PARAMS ((struct objfile *));
|
||
|
||
static void
|
||
dst_symfile_read PARAMS ((struct objfile *, struct section_offsets *, int));
|
||
|
||
static void
|
||
dst_symfile_finish PARAMS ((struct objfile *));
|
||
|
||
static void
|
||
record_minimal_symbol PARAMS ((char *, CORE_ADDR, enum minimal_symbol_type,
|
||
struct objfile *));
|
||
|
||
static void
|
||
dst_end_symtab PARAMS ((struct objfile *));
|
||
|
||
static void
|
||
complete_symtab PARAMS ((char *, CORE_ADDR, unsigned int));
|
||
|
||
static void
|
||
dst_start_symtab PARAMS ((void));
|
||
|
||
static void
|
||
dst_record_line PARAMS ((int, CORE_ADDR));
|
||
|
||
static struct blockvector *
|
||
make_blockvector (objfile)
|
||
struct objfile *objfile;
|
||
{
|
||
register struct pending_block *next, *next1;
|
||
register struct blockvector *blockvector;
|
||
register int i;
|
||
|
||
/* Count the length of the list of blocks. */
|
||
|
||
for (next = pending_blocks, i = 0; next; next = next->next, i++);
|
||
|
||
blockvector = (struct blockvector *)
|
||
obstack_alloc (&objfile->symbol_obstack, sizeof (struct blockvector) + (i - 1) * sizeof (struct block *));
|
||
|
||
/* Copy the blocks into the blockvector.
|
||
This is done in reverse order, which happens to put
|
||
the blocks into the proper order (ascending starting address).
|
||
*/
|
||
|
||
BLOCKVECTOR_NBLOCKS (blockvector) = i;
|
||
for (next = pending_blocks; next; next = next->next)
|
||
BLOCKVECTOR_BLOCK (blockvector, --i) = next->block;
|
||
|
||
/* Now free the links of the list, and empty the list. */
|
||
|
||
for (next = pending_blocks; next; next = next1)
|
||
{
|
||
next1 = next->next;
|
||
free ((PTR)next);
|
||
}
|
||
pending_blocks = 0;
|
||
|
||
return blockvector;
|
||
}
|
||
|
||
/* Manage the vector of line numbers. */
|
||
/* FIXME: Use record_line instead. */
|
||
|
||
static void
|
||
dst_record_line (line, pc)
|
||
int line;
|
||
CORE_ADDR pc;
|
||
{
|
||
struct linetable_entry *e;
|
||
/* Make sure line vector is big enough. */
|
||
|
||
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;
|
||
}
|
||
|
||
/* Start a new symtab for a new source file.
|
||
It indicates the start of data for one original source file. */
|
||
/* FIXME: use start_symtab, like coffread.c now does. */
|
||
|
||
static void
|
||
dst_start_symtab ()
|
||
{
|
||
/* Initialize the source file line number information for this file. */
|
||
|
||
if (line_vector) /* Unlikely, but maybe possible? */
|
||
free ((PTR)line_vector);
|
||
line_vector_index = 0;
|
||
line_vector_length = 1000;
|
||
prev_line_number = -2; /* Force first line number to be explicit */
|
||
line_vector = (struct linetable *)
|
||
xmalloc (sizeof (struct linetable)
|
||
+ line_vector_length * sizeof (struct linetable_entry));
|
||
}
|
||
|
||
/* Save the vital information from when starting to read a file,
|
||
for use when closing off the current file.
|
||
NAME is the file name the symbols came from, START_ADDR is the first
|
||
text address for the file, and SIZE is the number of bytes of text. */
|
||
|
||
static void
|
||
complete_symtab (name, start_addr, size)
|
||
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;
|
||
}
|
||
}
|
||
|
||
/* Finish the symbol definitions for one main source file,
|
||
close off all the lexical contexts for that file
|
||
(creating struct block's for them), then make the
|
||
struct symtab for that file and put it in the list of all such. */
|
||
/* FIXME: Use end_symtab, like coffread.c now does. */
|
||
|
||
static void
|
||
dst_end_symtab (objfile)
|
||
struct objfile *objfile;
|
||
{
|
||
register struct symtab *symtab;
|
||
register struct blockvector *blockvector;
|
||
register struct linetable *lv;
|
||
|
||
/* Create the blockvector that points to all the file's blocks. */
|
||
|
||
blockvector = make_blockvector (objfile);
|
||
|
||
/* Now create the symtab object for this source file. */
|
||
symtab = allocate_symtab (last_source_file, objfile);
|
||
|
||
/* Fill in its components. */
|
||
symtab->blockvector = blockvector;
|
||
symtab->free_code = free_linetable;
|
||
symtab->free_ptr = 0;
|
||
symtab->filename = last_source_file;
|
||
symtab->dirname = NULL;
|
||
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);
|
||
|
||
/* Reinitialize for beginning of new file. */
|
||
line_vector = 0;
|
||
line_vector_length = -1;
|
||
last_source_file = NULL;
|
||
}
|
||
|
||
static void
|
||
record_minimal_symbol (name, address, type, objfile)
|
||
char *name;
|
||
CORE_ADDR address;
|
||
enum minimal_symbol_type type;
|
||
struct objfile *objfile;
|
||
{
|
||
prim_record_minimal_symbol (savestring (name, strlen (name)),
|
||
address,
|
||
type,
|
||
objfile);
|
||
}
|
||
|
||
/* dst_symfile_init ()
|
||
is the dst-specific initialization routine for reading symbols.
|
||
|
||
We will only be called if this is a DST or DST-like file.
|
||
BFD handles figuring out the format of the file, and code in symtab.c
|
||
uses BFD's determination to vector to us.
|
||
|
||
The ultimate result is a new symtab (or, FIXME, eventually a psymtab). */
|
||
|
||
static void
|
||
dst_symfile_init (objfile)
|
||
struct objfile *objfile;
|
||
{
|
||
asection *section;
|
||
bfd *abfd = objfile->obfd;
|
||
|
||
init_entry_point_info (objfile);
|
||
|
||
}
|
||
|
||
/* This function is called for every section; it finds the outer limits
|
||
of the line table (minimum and maximum file offset) so that the
|
||
mainline code can read the whole thing for efficiency. */
|
||
|
||
/* ARGSUSED */
|
||
static void
|
||
find_dst_sections (abfd, asect, vpinfo)
|
||
bfd *abfd;
|
||
sec_ptr asect;
|
||
PTR vpinfo;
|
||
{
|
||
int size, count;
|
||
long base;
|
||
file_ptr offset, maxoff;
|
||
dst_sec *section;
|
||
|
||
/* WARNING WILL ROBINSON! ACCESSING BFD-PRIVATE DATA HERE! FIXME! */
|
||
size = asect->_raw_size;
|
||
offset = asect->filepos;
|
||
base = asect->vma;
|
||
/* End of warning */
|
||
|
||
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;
|
||
}
|
||
|
||
|
||
/* The BFD for this file -- only good while we're actively reading
|
||
symbols into a psymtab or a symtab. */
|
||
|
||
static bfd *symfile_bfd;
|
||
|
||
/* Read a symbol file, after initialization by dst_symfile_init. */
|
||
/* FIXME! Addr and Mainline are not used yet -- this will not work for
|
||
shared libraries or add_file! */
|
||
|
||
/* ARGSUSED */
|
||
static void
|
||
dst_symfile_read (objfile, section_offsets, mainline)
|
||
struct objfile *objfile;
|
||
struct section_offsets *section_offsets;
|
||
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; /* Kludge for swap routines */
|
||
|
||
/* WARNING WILL ROBINSON! ACCESSING BFD-PRIVATE DATA HERE! FIXME! */
|
||
desc = fileno ((GDB_FILE *)(abfd->iostream)); /* File descriptor */
|
||
|
||
/* Read the line number table, all at once. */
|
||
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, 0);
|
||
|
||
/* Now that the executable file is positioned at symbol table,
|
||
process it and define symbols accordingly. */
|
||
|
||
read_dst_symtab (objfile);
|
||
|
||
/* Sort symbols alphabetically within each block. */
|
||
|
||
{
|
||
struct symtab *s;
|
||
for (s = objfile -> symtabs; s != NULL; s = s -> next)
|
||
{
|
||
sort_symtab_syms (s);
|
||
}
|
||
}
|
||
|
||
/* Install any minimal symbols that have been collected as the current
|
||
minimal symbols for this objfile. */
|
||
|
||
install_minimal_symbols (objfile);
|
||
}
|
||
|
||
static void
|
||
dst_new_init (ignore)
|
||
struct objfile *ignore;
|
||
{
|
||
/* Nothin' to do */
|
||
}
|
||
|
||
/* Perform any local cleanups required when we are done with a particular
|
||
objfile. I.E, we are in the process of discarding all symbol information
|
||
for an objfile, freeing up all memory held for it, and unlinking the
|
||
objfile struct from the global list of known objfiles. */
|
||
|
||
static void
|
||
dst_symfile_finish (objfile)
|
||
struct objfile *objfile;
|
||
{
|
||
/* Nothing to do */
|
||
}
|
||
|
||
|
||
/* Get the next line number from the DST. Returns 0 when we hit an
|
||
* end directive or cannot continue for any other reason.
|
||
*
|
||
* Note that ordinary pc deltas are multiplied by two. Apparently
|
||
* this is what was really intended.
|
||
*/
|
||
static int
|
||
get_dst_line(buffer, pc)
|
||
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; /* pad byte */
|
||
break;
|
||
case dst_ln_file:
|
||
/* file escape. Next 4 bytes are a dst_src_loc_t */
|
||
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:
|
||
/* 1 byte line delta, 1 byte pc delta */
|
||
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:
|
||
/* 2 bytes line delta, 2 bytes pc delta */
|
||
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:
|
||
/* 4 bytes ABSOLUTE line number, 4 bytes ABSOLUTE pc */
|
||
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:
|
||
/* 1 byte line delta, pc delta = 0 */
|
||
size = 2;
|
||
last_line+= (*buffer)[1];
|
||
break;
|
||
case dst_ln_ln_off_1:
|
||
/* statement escape, stmt # = 1 (2nd stmt on line) */
|
||
size = 1;
|
||
break;
|
||
case dst_ln_ln_off:
|
||
/* statement escape, stmt # = next byte */
|
||
size = 2;
|
||
break;
|
||
case dst_ln_entry:
|
||
/* entry escape, next byte is entry number */
|
||
size = 2;
|
||
break;
|
||
case dst_ln_exit:
|
||
/* exit escape */
|
||
size = 1;
|
||
break;
|
||
case dst_ln_stmt_end:
|
||
/* gap escape, 4 bytes pc delta */
|
||
size = 5;
|
||
/* last_pc += 2 * (*(long *) (*buffer + 1)); */
|
||
/* Apparently this isn't supposed to actually modify
|
||
* the pc value. Totally weird.
|
||
*/
|
||
break;
|
||
case dst_ln_escape_11:
|
||
case dst_ln_escape_12:
|
||
case dst_ln_escape_13:
|
||
size = 1;
|
||
break;
|
||
case dst_ln_nxt_byte:
|
||
/* This shouldn't happen. If it does, we're SOL */
|
||
return 0;
|
||
break;
|
||
case dst_ln_end:
|
||
/* end escape, final entry follows */
|
||
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(buffer, address)
|
||
char *buffer;
|
||
long address;
|
||
{
|
||
if (buffer)
|
||
while (get_dst_line(&buffer, &address));
|
||
}
|
||
|
||
static int
|
||
get_dst_entry(buffer, ret_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; /* Obsolete entry type */
|
||
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) /* Align on a word boundary */
|
||
size++;
|
||
size += 2;
|
||
*ret_entry = entry;
|
||
return size;
|
||
}
|
||
|
||
static int next_dst_entry(buffer, entry, table)
|
||
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(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(ref)
|
||
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(objfile)
|
||
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(objfile, name)
|
||
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) = obstack_copy0 (&objfile->symbol_obstack,
|
||
name, strlen (name));
|
||
SYMBOL_VALUE (sym) = 0;
|
||
SYMBOL_NAMESPACE (sym) = VAR_NAMESPACE;
|
||
|
||
SYMBOL_CLASS (sym) = LOC_BLOCK;
|
||
return sym;
|
||
};
|
||
|
||
static struct type *
|
||
decode_dst_type PARAMS ((struct objfile *, dst_rec_ptr_t));
|
||
|
||
static struct type *
|
||
decode_type_desc(objfile, type_desc, base)
|
||
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;
|
||
/* The next few are more complex. I will take care
|
||
* of them properly at a later point.
|
||
*/
|
||
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;
|
||
/* Back tto some ordinary ones */
|
||
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(name)
|
||
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(objfile, entry, code, version)
|
||
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)
|
||
{
|
||
free((PTR) name);
|
||
return type;
|
||
}
|
||
type = create_new_type(objfile);
|
||
TYPE_NAME(type) = obstack_copy0 (&objfile->symbol_obstack,
|
||
name, strlen(name));
|
||
free((PTR) 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(objfile, entry)
|
||
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(locstr, sym)
|
||
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: /* End of string */
|
||
return;
|
||
case dst_lsc_indirect:/* Indirect through previous. Arg == 6 */
|
||
/* Or register ax x == arg */
|
||
if (entry->header.arg < 6)
|
||
{
|
||
SYMBOL_CLASS(sym) = LOC_REGISTER;
|
||
SYMBOL_VALUE(sym) = entry->header.arg + 8;
|
||
}
|
||
/* We predict indirects */
|
||
locstr++;
|
||
break;
|
||
case dst_lsc_dreg:
|
||
SYMBOL_CLASS(sym) = LOC_REGISTER;
|
||
SYMBOL_VALUE(sym) = entry->header.arg;
|
||
locstr++;
|
||
break;
|
||
case dst_lsc_section:/* Section (arg+1) */
|
||
SYMBOL_VALUE(sym) = dst_get_addr(entry->header.arg+1, 0);
|
||
locstr++;
|
||
break;
|
||
case dst_lsc_sec_byte: /* Section (next_byte+1) */
|
||
SYMBOL_VALUE(sym) = dst_get_addr(locstr[1]+1, 0);
|
||
locstr+=2;
|
||
break;
|
||
case dst_lsc_add: /* Add (arg+1)*2 */
|
||
case dst_lsc_sub: /* Subtract (arg+1)*2 */
|
||
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: /* Stack base register (frame pointer). Arg==0*/
|
||
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(objfile, entry, name, nsyms_ret)
|
||
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))
|
||
/* It's the function return value */
|
||
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: /* What is this? */
|
||
SYMBOL_VALUE_ADDRESS(sym) = dst_get_addr(
|
||
loc_index,
|
||
loc_value);
|
||
break;
|
||
case dst_var_loc_ind_reg_rel: /* What is this? */
|
||
case dst_var_loc_reg_rel:
|
||
/* If it isn't fp relative, specify the
|
||
* register it's relative to.
|
||
*/
|
||
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:
|
||
/* External variable..... don't try to interpret
|
||
* its nonexistant locstring.
|
||
*/
|
||
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(objfile, entry, name, address)
|
||
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;
|
||
|
||
/* Now add ourselves to the global symbols list */
|
||
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(objfile, entry)
|
||
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;
|
||
struct pending_block *pblock;
|
||
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)
|
||
{
|
||
/* These are all really functions. Even the "program" type.
|
||
* This is because the Apollo OS was written in Pascal, and
|
||
* in Pascal, the main procedure is described as the Program.
|
||
* Cute, huh?
|
||
*/
|
||
case dst_block_procedure:
|
||
case dst_block_function:
|
||
case dst_block_subroutine:
|
||
case dst_block_program:
|
||
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:
|
||
/* GDB has to call it something, and the module name
|
||
* won't cut it
|
||
*/
|
||
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;
|
||
|
||
free((PTR) 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;
|
||
|
||
pblock = (struct pending_block *)
|
||
xmalloc (sizeof (struct pending_block));
|
||
pblock->block = block;
|
||
pblock->next = pending_blocks;
|
||
pending_blocks = pblock;
|
||
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;
|
||
}
|
||
}
|
||
return block;
|
||
}
|
||
|
||
|
||
static void
|
||
read_dst_symtab (objfile)
|
||
struct objfile *objfile;
|
||
{
|
||
char *buffer;
|
||
dst_rec_ptr_t entry, file_table, root_block;
|
||
char *source_file;
|
||
struct block *block, *global_block;
|
||
struct pending_block *pblock;
|
||
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);
|
||
/* Point buffer to the start of the next comp_unit */
|
||
buffer = DST_OFFSET(entry,
|
||
DST_comp_unit(entry).data_size);
|
||
dst_start_symtab();
|
||
|
||
pblock = (struct pending_block *)
|
||
xmalloc (sizeof (struct pending_block));
|
||
pblock->next = NULL;
|
||
pending_blocks = pblock;
|
||
|
||
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;
|
||
|
||
free((PTR) 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;
|
||
pblock->block = global_block;
|
||
|
||
complete_symtab(source_file,
|
||
BLOCK_START(block),
|
||
BLOCK_END(block) - BLOCK_START(block));
|
||
module_num++;
|
||
dst_end_symtab(objfile);
|
||
}
|
||
}
|
||
if (module_num)
|
||
record_minimal_symbol("<end_of_program>",
|
||
BLOCK_END(block), mst_text, objfile);
|
||
/* One more faked symbol to make sure nothing can ever run off the
|
||
* end of the symbol table. This one represents the end of the
|
||
* text space. It used to be (CORE_ADDR) -1 (effectively the highest
|
||
* int possible), but some parts of gdb treated it as a signed
|
||
* number and failed comparisons. We could equally use 7fffffff,
|
||
* but no functions are ever mapped to an address higher than
|
||
* 40000000
|
||
*/
|
||
record_minimal_symbol("<end_of_text>",
|
||
(CORE_ADDR) 0x40000000,
|
||
mst_text, objfile);
|
||
while (struct_list)
|
||
{
|
||
element = struct_list;
|
||
struct_list = element->next;
|
||
free((PTR) element);
|
||
}
|
||
}
|
||
|
||
|
||
/* Support for line number handling */
|
||
static char *linetab = NULL;
|
||
static long linetab_offset;
|
||
static unsigned long linetab_size;
|
||
|
||
/* Read in all the line numbers for fast lookups later. Leave them in
|
||
external (unswapped) format in memory; we'll swap them as we enter
|
||
them into GDB's data structures. */
|
||
static int
|
||
init_one_section(chan, secinfo)
|
||
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 (chan)
|
||
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;
|
||
}
|
||
|
||
/* Fake up support for relocating symbol addresses. FIXME. */
|
||
|
||
struct section_offsets dst_symfile_faker = {0};
|
||
|
||
struct section_offsets *
|
||
dst_symfile_offsets (objfile, addr)
|
||
struct objfile *objfile;
|
||
CORE_ADDR addr;
|
||
{
|
||
objfile->num_sections = 1;
|
||
return &dst_symfile_faker;
|
||
}
|
||
|
||
/* Register our ability to parse symbols for DST BFD files */
|
||
|
||
static struct sym_fns dst_sym_fns =
|
||
{
|
||
/* FIXME: Can this be integrated with coffread.c? If not, should it be
|
||
a separate flavour like ecoff? */
|
||
(enum bfd_flavour)-2,
|
||
|
||
dst_new_init, /* sym_new_init: init anything gbl to entire symtab */
|
||
dst_symfile_init, /* sym_init: read initial info, setup for sym_read() */
|
||
dst_symfile_read, /* sym_read: read a symbol file into symtab */
|
||
dst_symfile_finish, /* sym_finish: finished with file, cleanup */
|
||
dst_symfile_offsets, /* sym_offsets: xlate external to internal form */
|
||
NULL /* next: pointer to next struct sym_fns */
|
||
};
|
||
|
||
void
|
||
_initialize_dstread ()
|
||
{
|
||
add_symtab_fns(&dst_sym_fns);
|
||
}
|