mirror of
https://github.com/darlinghq/darling-gdb.git
synced 2024-11-29 06:50:32 +00:00
1945 lines
46 KiB
C
1945 lines
46 KiB
C
/*
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bfd backend for ieee objects.
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IEEE 695 format is a stream of records, which we parse using a simple one
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token (which is one byte in this lexicon) lookahead recursive decent
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parser.
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*/
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#include "sysdep.h"
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#include "bfd.h"
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#include "libbfd.h"
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#include "obstack.h"
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#include "ieee.h"
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#include "libieee.h"
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#define obstack_chunk_alloc malloc
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#define obstack_chunk_free free
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#define ieee_malloc(abfd,size) \
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obstack_alloc(&( ieee_data(abfd)->ieee_obstack), (size))
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typedef void generic_symbol_type;
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/***************************************************************************
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Functions for writing to ieee files in the strange way that the
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standard requires:
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*/
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static void
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DEFUN(ieee_write_byte,(abfd, byte),
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bfd *abfd AND
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bfd_byte byte)
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{
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bfd_write(&byte, 1, 1, abfd);
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}
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static void
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DEFUN(ieee_write_2bytes,(abfd, bytes),
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bfd *abfd AND
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int bytes)
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{
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bfd_byte buffer[2];
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buffer[0] = bytes >> 8;
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buffer[1] = bytes & 0xff;
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bfd_write(buffer, 1, 2, abfd);
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}
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static void
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DEFUN(ieee_write_int,(abfd, value),
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bfd *abfd AND
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bfd_vma value)
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{
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if (value >= 0 && value <= 127) {
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ieee_write_byte(abfd, value);
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}
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else {
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unsigned int length;
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/* How many significant bytes ? */
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/* FIXME FOR LONGER INTS */
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if (value & 0xff000000) {
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length = 4;
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}
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else if (value & 0x00ff0000) {
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length = 3;
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}
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else if (value & 0x0000ff00) {
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length = 2;
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}
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else length = 1;
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ieee_write_byte(abfd, ieee_number_repeat_start_enum + length);
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switch (length) {
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case 4:
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ieee_write_byte(abfd, value >> 24);
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case 3:
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ieee_write_byte(abfd, value >> 16);
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case 2:
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ieee_write_byte(abfd, value >> 8);
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case 1:
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ieee_write_byte(abfd, value);
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}
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}
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}
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static void
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DEFUN(ieee_write_id,(abfd, id),
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bfd *abfd AND
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CONST char *id)
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{
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size_t length = strlen(id);
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if (length >= 0 && length <= 127) {
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ieee_write_byte(abfd, length);
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}
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else if (length < 255) {
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ieee_write_byte(abfd, ieee_extension_length_1_enum);
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ieee_write_byte(abfd, length);
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}
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else if (length < 65535) {
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ieee_write_byte(abfd, ieee_extension_length_2_enum);
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ieee_write_byte(abfd, length >> 8);
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ieee_write_byte(abfd, length & 0xff);
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}
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else {
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BFD_FAIL();
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}
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bfd_write((bfd_byte *)id, 1, length, abfd);
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}
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/***************************************************************************
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Functions for reading from ieee files in the strange way that the
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standard requires:
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*/
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#define this_byte(abfd) *(ptr(abfd))
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#define next_byte(abfd) (ptr(abfd)++)
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#define this_byte_and_next(abfd) *(ptr(abfd)++)
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static unsigned short
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DEFUN(read_2bytes,(abfd),
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bfd *abfd)
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{
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unsigned char c1 = this_byte_and_next(abfd);
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unsigned char c2 = this_byte_and_next(abfd);
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return (c1<<8 ) | c2;
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}
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static void
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DEFUN(bfd_get_string,(abfd, string, length),
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bfd *abfd AND
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char *string AND
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size_t length)
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{
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size_t i;
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for (i= 0; i < length; i++) {
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string[i] = this_byte_and_next(abfd);
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}
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}
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static char *
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DEFUN(read_id,(abfd),
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bfd *abfd)
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{
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size_t length;
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char *string;
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length = this_byte_and_next(abfd);
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if (length >= 0x00 && length <= 0x7f) {
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/* Simple string of length 0 to 127 */
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}
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else if (length == 0xde) {
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/* Length is next byte, allowing 0..255 */
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length = this_byte_and_next(abfd);
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}
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else if (length == 0xdf) {
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/* Length is next two bytes, allowing 0..65535 */
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length = this_byte_and_next(abfd) ;
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length = (length * 256) + this_byte_and_next(abfd);
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}
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/* Buy memory and read string */
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string = ieee_malloc(abfd, length+1);
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bfd_get_string(abfd, string, length);
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string[length] = 0;
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return string;
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}
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static void
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DEFUN(ieee_write_expression,(abfd, value, section, symbol),
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bfd*abfd AND
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bfd_vma value AND
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asection *section AND
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asymbol *symbol)
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{
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unsigned int plus_count = 0;
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ieee_write_int(abfd, value);
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if (section != (asection *)NULL) {
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plus_count++;
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ieee_write_byte(abfd, ieee_variable_L_enum);
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ieee_write_byte(abfd, section->index +IEEE_SECTION_NUMBER_BASE);
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}
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if (symbol != (asymbol *)NULL) {
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plus_count++;
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if ((symbol->flags & BSF_UNDEFINED ) ||
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(symbol->flags & BSF_FORT_COMM)) {
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ieee_write_byte(abfd, ieee_variable_X_enum);
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ieee_write_int(abfd, symbol->value);
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}
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else if (symbol->flags & BSF_GLOBAL) {
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ieee_write_byte(abfd, ieee_variable_I_enum);
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ieee_write_int(abfd, symbol->value);
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}
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else if (symbol->flags & BSF_LOCAL) {
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/* This is a reference to a defined local symbol,
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We can easily do a local as a section+offset */
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if (symbol->section != (asection *)NULL) {
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/* If this symbol is not absolute, add the base of it */
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ieee_write_byte(abfd, ieee_variable_L_enum);
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ieee_write_byte(abfd, symbol->section->index +
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IEEE_SECTION_NUMBER_BASE);
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plus_count++;
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}
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ieee_write_int(abfd, symbol->value);
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}
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else {
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BFD_FAIL();
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}
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}
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while (plus_count != 0) {
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ieee_write_byte(abfd, ieee_function_plus_enum);
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plus_count--;
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}
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}
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/*****************************************************************************/
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/*
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writes any integer into the buffer supplied and always takes 5 bytes
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*/
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static void
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DEFUN(ieee_write_int5,(buffer, value),
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bfd_byte*buffer AND
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bfd_vma value )
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{
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buffer[0] = ieee_number_repeat_4_enum;
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buffer[1] = (value >> 24 ) & 0xff;
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buffer[2] = (value >> 16 ) & 0xff;
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buffer[3] = (value >> 8 ) & 0xff;
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buffer[4] = (value >> 0 ) & 0xff;
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}
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static void
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DEFUN(ieee_write_int5_out, (abfd, value),
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bfd *abfd AND
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bfd_vma value)
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{
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char b[5];
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ieee_write_int5(b, value);
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bfd_write(b,1,5,abfd);
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}
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static boolean
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DEFUN(parse_int,(abfd, value_ptr),
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bfd *abfd AND
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bfd_vma *value_ptr)
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{
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int value = this_byte(abfd);
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int result;
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if (value >= 0 && value <= 127) {
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*value_ptr = value;
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next_byte(abfd);
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return true;
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}
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else if (value >= 0x80 && value <= 0x88) {
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unsigned int count = value & 0xf;
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result = 0;
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next_byte(abfd);
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while (count) {
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result =(result << 8) | this_byte_and_next(abfd);
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count--;
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}
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*value_ptr = result;
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return true;
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}
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return false;
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}
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static int
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DEFUN(parse_i,(abfd, ok),
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bfd *abfd AND
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boolean *ok)
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{
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bfd_vma x;
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*ok = parse_int(abfd, &x);
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return x;
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}
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static bfd_vma
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DEFUN(must_parse_int,(abfd),
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bfd *abfd)
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{
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bfd_vma result;
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BFD_ASSERT(parse_int(abfd, &result) == true);
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return result;
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}
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typedef struct
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{
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bfd_vma value;
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asection *section;
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ieee_symbol_index_type symbol;
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} ieee_value_type;
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static
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reloc_howto_type abs32_howto
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= {1,0,2,32,0,0,0,true,0,"abs32",false,0xffffffff, 0xffffffff};
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static
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reloc_howto_type abs16_howto
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= {1,0,1,16,0,0,0,true,0,"abs16",false,0x0000ffff, 0x0000ffff};
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static ieee_symbol_index_type NOSYMBOL = { 0, 0};
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static void
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DEFUN(parse_expression,(abfd, value, section, symbol, pcrel, extra),
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bfd *abfd AND
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bfd_vma *value AND
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asection **section AND
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ieee_symbol_index_type *symbol AND
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boolean *pcrel AND
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unsigned int *extra)
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{
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#define POS sp[1]
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#define TOS sp[0]
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#define NOS sp[-1]
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#define INC sp++;
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#define DEC sp--;
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boolean loop = true;
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ieee_value_type stack[10];
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/* The stack pointer always points to the next unused location */
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#define PUSH(x,y,z) TOS.symbol=x;TOS.section=y;TOS.value=z;INC;
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#define POP(x,y,z) DEC;x=TOS.symbol;y=TOS.section;z=TOS.value;
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ieee_value_type *sp = stack;
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while (loop) {
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switch (this_byte(abfd))
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{
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case ieee_variable_P_enum:
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/* P variable, current program counter for section n */
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{
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int section_n ;
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next_byte(abfd);
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section_n = must_parse_int(abfd);
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PUSH(NOSYMBOL, 0,
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TOS.value = ieee_data(abfd)->section_table[section_n]->vma +
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ieee_per_section(ieee_data(abfd)->section_table[section_n])->pc);
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break;
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}
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case ieee_variable_L_enum:
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/* L variable address of section N */
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next_byte(abfd);
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PUSH(NOSYMBOL,ieee_data(abfd)->section_table[must_parse_int(abfd)],0);
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break;
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case ieee_variable_R_enum:
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/* R variable, logical address of section module */
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/* FIXME, this should be different to L */
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next_byte(abfd);
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PUSH(NOSYMBOL,ieee_data(abfd)->section_table[must_parse_int(abfd)],0);
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break;
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case ieee_variable_S_enum:
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/* S variable, size in MAUS of section module */
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next_byte(abfd);
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PUSH(NOSYMBOL,
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0,
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ieee_data(abfd)->section_table[must_parse_int(abfd)]->size);
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break;
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case ieee_variable_X_enum:
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/* Push the address of external variable n */
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{
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ieee_symbol_index_type sy;
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next_byte(abfd);
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sy.index = (int)(must_parse_int(abfd)) ;
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sy.letter = 'X';
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PUSH(sy, 0, 0);
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}
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break;
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case ieee_function_minus_enum:
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{
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bfd_vma value1, value2;
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asection *section;
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ieee_symbol_index_type sy;
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next_byte(abfd);
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POP(sy, section, value1);
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POP(sy, section, value2);
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PUSH(NOSYMBOL, 0, value1-value2);
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}
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break;
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case ieee_function_plus_enum:
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{
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bfd_vma value1, value2;
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asection *section1;
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asection *section2;
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ieee_symbol_index_type sy1;
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ieee_symbol_index_type sy2;
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next_byte(abfd);
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POP(sy1, section1, value1);
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POP(sy2, section2, value2);
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PUSH(sy1.letter ? sy1 : sy2, section1 ? section1: section2, value1+value2);
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}
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break;
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default:
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{
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bfd_vma va;
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BFD_ASSERT(this_byte(abfd) < ieee_variable_A_enum
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|| this_byte(abfd) > ieee_variable_Z_enum);
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if (parse_int(abfd, &va))
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{
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PUSH(NOSYMBOL,0, va);
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}
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else {
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/*
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Thats all that we can understand. As far as I can see
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there is a bug in the Microtec IEEE output which I'm
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using to scan, whereby the comma operator is ommited
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sometimes in an expression, giving expressions with too
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many terms. We can tell if that's the case by ensuring
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that sp == stack here. If not, then we've pushed
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something too far. -
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*/
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POP(*symbol, *section, *value);
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if (sp != stack) {
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BFD_ASSERT(*section == 0);
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*extra = *value;
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/* Get what should be returned */
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POP(*symbol, *section, *value);
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}
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else {
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*extra = 0;
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}
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loop = false;
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}
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}
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}
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}
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}
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#define ieee_seek(abfd, offset) \
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ieee_data(abfd)->input_p = ieee_data(abfd)->first_byte + offset
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static void
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DEFUN(ieee_slurp_external_symbols,(abfd),
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bfd *abfd)
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{
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ieee_data_type *ieee = ieee_data(abfd);
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file_ptr offset = ieee->w.r.external_part;
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ieee_symbol_type **prev_symbols_ptr = &ieee->external_symbols;
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ieee_symbol_type **prev_reference_ptr = &ieee->external_reference;
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ieee_symbol_type *symbol;
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unsigned int symbol_count = 0;
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boolean loop = true;
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ieee->symbol_table_full = true;
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ieee_seek(abfd, offset );
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while (loop) {
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switch (this_byte(abfd)) {
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case ieee_external_symbol_enum:
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next_byte(abfd);
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symbol = (ieee_symbol_type *)ieee_malloc(abfd, sizeof(ieee_symbol_type));
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*prev_symbols_ptr = symbol;
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prev_symbols_ptr= &symbol->next;
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symbol->index = must_parse_int(abfd);
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if (symbol->index > ieee->external_symbol_max_index) {
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ieee->external_symbol_max_index = symbol->index;
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}
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BFD_ASSERT (symbol->index >= ieee->external_symbol_min_index);
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symbol_count++;
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symbol->symbol.the_bfd = abfd;
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symbol->symbol.name = read_id(abfd);
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symbol->symbol.udata = (void *)NULL;
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symbol->symbol.flags = BSF_NO_FLAGS;
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break;
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case ieee_attribute_record_enum >> 8:
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{
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unsigned int symbol_name_index;
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unsigned int symbol_type_index;
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unsigned int symbol_attribute_def;
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bfd_vma value;
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next_byte(abfd); /* Skip prefix */
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next_byte(abfd);
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symbol_name_index = must_parse_int(abfd);
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symbol_type_index = must_parse_int(abfd);
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symbol_attribute_def = must_parse_int(abfd);
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parse_int(abfd,&value);
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}
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break;
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case ieee_value_record_enum >> 8:
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{
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unsigned int symbol_name_index;
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ieee_symbol_index_type symbol_ignore;
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boolean pcrel_ignore;
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unsigned int extra_ignore;
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next_byte(abfd);
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next_byte(abfd);
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symbol_name_index = must_parse_int(abfd);
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parse_expression(abfd,
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&symbol->symbol.value,
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&symbol->symbol.section,
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&symbol_ignore,
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&pcrel_ignore,
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&extra_ignore);
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if (symbol->symbol.section != (asection *)NULL) {
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symbol->symbol.flags = BSF_GLOBAL | BSF_EXPORT;
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}
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else {
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symbol->symbol.flags = BSF_GLOBAL | BSF_EXPORT | BSF_ABSOLUTE;
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}
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}
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break;
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case ieee_weak_external_reference_enum:
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{ bfd_vma size;
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bfd_vma value ;
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next_byte(abfd);
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/* Throw away the external reference index */
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(void)must_parse_int(abfd);
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/* Fetch the default size if not resolved */
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size = must_parse_int(abfd);
|
||
/* Fetch the defautlt value if available */
|
||
if ( parse_int(abfd, &value) == false) {
|
||
value = 0;
|
||
}
|
||
/* This turns into a common */
|
||
symbol->symbol.flags = BSF_FORT_COMM;
|
||
symbol->symbol.value = size;
|
||
}
|
||
break;
|
||
|
||
case ieee_external_reference_enum:
|
||
next_byte(abfd);
|
||
symbol = (ieee_symbol_type *)ieee_malloc(abfd, sizeof(ieee_symbol_type));
|
||
symbol_count++;
|
||
*prev_reference_ptr = symbol;
|
||
prev_reference_ptr = &symbol->next;
|
||
symbol->index = must_parse_int(abfd);
|
||
symbol->symbol.the_bfd = abfd;
|
||
symbol->symbol.name = read_id(abfd);
|
||
symbol->symbol.udata = (void *)NULL;
|
||
symbol->symbol.section = (asection *)NULL;
|
||
symbol->symbol.value = (bfd_vma)0;
|
||
symbol->symbol.flags = BSF_UNDEFINED;
|
||
if (symbol->index > ieee->external_reference_max_index) {
|
||
ieee->external_reference_max_index = symbol->index;
|
||
}
|
||
BFD_ASSERT (symbol->index >= ieee->external_reference_min_index);
|
||
break;
|
||
|
||
default:
|
||
loop = false;
|
||
}
|
||
}
|
||
|
||
if (ieee->external_symbol_max_index != 0) {
|
||
ieee->external_symbol_count =
|
||
ieee->external_symbol_max_index -
|
||
ieee->external_symbol_min_index + 1 ;
|
||
}
|
||
else {
|
||
ieee->external_symbol_count = 0;
|
||
}
|
||
|
||
|
||
if(ieee->external_reference_max_index != 0) {
|
||
ieee->external_reference_count =
|
||
ieee->external_reference_max_index -
|
||
ieee->external_reference_min_index + 1;
|
||
}
|
||
else {
|
||
ieee->external_reference_count = 0;
|
||
}
|
||
|
||
abfd->symcount =
|
||
ieee->external_reference_count + ieee->external_symbol_count;
|
||
|
||
if (symbol_count != abfd->symcount) {
|
||
/* There are gaps in the table -- */
|
||
ieee->symbol_table_full = false;
|
||
}
|
||
*prev_symbols_ptr = (ieee_symbol_type *)NULL;
|
||
*prev_reference_ptr = (ieee_symbol_type *)NULL;
|
||
}
|
||
|
||
static void
|
||
DEFUN(ieee_slurp_symbol_table,(abfd),
|
||
bfd *abfd)
|
||
{
|
||
if (ieee_data(abfd)->read_symbols == false) {
|
||
ieee_slurp_external_symbols(abfd);
|
||
ieee_data(abfd)->read_symbols= true;
|
||
}
|
||
}
|
||
|
||
size_t
|
||
DEFUN(ieee_get_symtab_upper_bound,(abfd),
|
||
bfd *abfd)
|
||
{
|
||
ieee_slurp_symbol_table (abfd);
|
||
|
||
return (abfd->symcount != 0) ?
|
||
(abfd->symcount+1) * (sizeof (ieee_symbol_type *)) : 0;
|
||
}
|
||
|
||
/*
|
||
Move from our internal lists to the canon table, and insert in
|
||
symbol index order
|
||
*/
|
||
|
||
extern bfd_target ieee_vec;
|
||
|
||
unsigned int
|
||
DEFUN(ieee_get_symtab,(abfd, location),
|
||
bfd *abfd AND
|
||
asymbol **location)
|
||
{
|
||
ieee_symbol_type *symp;
|
||
static bfd dummy_bfd;
|
||
static asymbol empty_symbol =
|
||
{ &dummy_bfd," ieee empty",(symvalue)0,BSF_DEBUGGING | BSF_FAKE};
|
||
|
||
ieee_data_type *ieee = ieee_data(abfd);
|
||
dummy_bfd.xvec= &ieee_vec;
|
||
ieee_slurp_symbol_table(abfd);
|
||
|
||
if (ieee->symbol_table_full == false) {
|
||
/* Arrgh - there are gaps in the table, run through and fill them */
|
||
/* up with pointers to a null place */
|
||
unsigned int i;
|
||
for (i= 0; i < abfd->symcount; i++) {
|
||
location[i] = &empty_symbol;
|
||
}
|
||
}
|
||
|
||
|
||
ieee->external_symbol_base_offset= - ieee->external_symbol_min_index;
|
||
for (symp = ieee_data(abfd)->external_symbols;
|
||
symp != (ieee_symbol_type *)NULL;
|
||
symp = symp->next) {
|
||
/* Place into table at correct index locations */
|
||
location[symp->index + ieee->external_symbol_base_offset] = &symp->symbol;
|
||
|
||
}
|
||
|
||
/* The external refs are indexed in a bit */
|
||
ieee->external_reference_base_offset =
|
||
- ieee->external_reference_min_index +ieee->external_symbol_count ;
|
||
|
||
for (symp = ieee_data(abfd)->external_reference;
|
||
symp != (ieee_symbol_type *)NULL;
|
||
symp = symp->next) {
|
||
location[symp->index + ieee->external_reference_base_offset] =
|
||
&symp->symbol;
|
||
|
||
}
|
||
|
||
|
||
|
||
location[abfd->symcount] = (asymbol *)NULL;
|
||
|
||
return abfd->symcount;
|
||
}
|
||
|
||
|
||
static void
|
||
DEFUN(ieee_slurp_sections,(abfd),
|
||
bfd *abfd)
|
||
{
|
||
ieee_data_type *ieee = ieee_data(abfd);
|
||
file_ptr offset = ieee->w.r.section_part;
|
||
|
||
asection *section = (asection *)NULL;
|
||
|
||
if (offset != 0) {
|
||
bfd_byte section_type[3];
|
||
ieee_seek(abfd, offset);
|
||
while (true) {
|
||
switch (this_byte(abfd)) {
|
||
case ieee_section_type_enum:
|
||
{
|
||
unsigned int section_index ;
|
||
next_byte(abfd);
|
||
section_index = must_parse_int(abfd);
|
||
/* Fixme to be nice about a silly number of sections */
|
||
BFD_ASSERT(section_index < NSECTIONS);
|
||
|
||
section = bfd_make_section(abfd, " tempname");
|
||
ieee->section_table[section_index] = section;
|
||
section->flags = SEC_NO_FLAGS;
|
||
section->target_index = section_index;
|
||
section_type[0] = this_byte_and_next(abfd);
|
||
switch (section_type[0]) {
|
||
case 0xC3:
|
||
section_type[1] = this_byte(abfd);
|
||
section->flags = SEC_LOAD;
|
||
switch (section_type[1]) {
|
||
case 0xD0:
|
||
/* Normal code */
|
||
next_byte(abfd);
|
||
section->flags |= SEC_LOAD | SEC_CODE;
|
||
break;
|
||
case 0xC4:
|
||
next_byte(abfd);
|
||
section->flags |= SEC_LOAD | SEC_DATA;
|
||
/* Normal data */
|
||
break;
|
||
case 0xD2:
|
||
next_byte(abfd);
|
||
/* Normal rom data */
|
||
section->flags |= SEC_LOAD | SEC_ROM | SEC_DATA;
|
||
break;
|
||
default:
|
||
break;
|
||
}
|
||
}
|
||
section->name = read_id(abfd);
|
||
{ bfd_vma parent, brother, context;
|
||
parse_int(abfd, &parent);
|
||
parse_int(abfd, &brother);
|
||
parse_int(abfd, &context);
|
||
}
|
||
|
||
|
||
}
|
||
break;
|
||
case ieee_section_alignment_enum:
|
||
{
|
||
unsigned int section_index;
|
||
bfd_vma value;
|
||
next_byte(abfd);
|
||
section_index = must_parse_int(abfd);
|
||
if (section_index > ieee->section_count) {
|
||
ieee->section_count = section_index;
|
||
}
|
||
ieee->section_table[section_index]->alignment_power =
|
||
bfd_log2(must_parse_int(abfd));
|
||
(void)parse_int(abfd, & value);
|
||
}
|
||
break;
|
||
case ieee_e2_first_byte_enum:
|
||
{
|
||
ieee_record_enum_type t = read_2bytes(abfd);
|
||
switch (t) {
|
||
case ieee_section_size_enum:
|
||
section = ieee->section_table[must_parse_int(abfd)];
|
||
section->size = must_parse_int(abfd);
|
||
break;
|
||
case ieee_physical_region_size_enum:
|
||
section = ieee->section_table[must_parse_int(abfd)];
|
||
section->size = must_parse_int(abfd);
|
||
break;
|
||
case ieee_region_base_address_enum:
|
||
section = ieee->section_table[must_parse_int(abfd)];
|
||
section->vma = must_parse_int(abfd);
|
||
break;
|
||
case ieee_mau_size_enum:
|
||
must_parse_int(abfd);
|
||
must_parse_int(abfd);
|
||
break;
|
||
case ieee_m_value_enum:
|
||
must_parse_int(abfd);
|
||
must_parse_int(abfd);
|
||
break;
|
||
case ieee_section_base_address_enum:
|
||
section = ieee->section_table[must_parse_int(abfd)];
|
||
section->vma = must_parse_int(abfd);
|
||
break;
|
||
case ieee_section_offset_enum:
|
||
(void) must_parse_int(abfd);
|
||
(void) must_parse_int(abfd);
|
||
break;
|
||
default:
|
||
return;
|
||
}
|
||
}
|
||
break;
|
||
default:
|
||
return;
|
||
}
|
||
}
|
||
}
|
||
}
|
||
|
||
/***********************************************************************
|
||
* archive stuff
|
||
*/
|
||
bfd_target *
|
||
DEFUN(ieee_archive_p,(abfd),
|
||
bfd *abfd)
|
||
{
|
||
char *library;
|
||
boolean loop;
|
||
ieee_ar_data_type *ar;
|
||
unsigned int i;
|
||
return 0;
|
||
ieee_seek(abfd, (file_ptr) 0);
|
||
if (this_byte(abfd) != Module_Beginning) return (bfd_target*)NULL;
|
||
next_byte(abfd);
|
||
library= read_id(abfd);
|
||
if (strcmp(library , "LIBRARY") != 0) {
|
||
free(library);
|
||
return (bfd_target *)NULL;
|
||
}
|
||
/* Throw away the filename */
|
||
free( read_id(abfd));
|
||
/* This must be an IEEE archive, so we'll buy some space to do
|
||
things */
|
||
ar = (ieee_ar_data_type *) malloc(sizeof(ieee_ar_data_type));
|
||
ieee_ar_data(abfd) = ar;
|
||
ar->element_count = 0;
|
||
ar->element_index = 0;
|
||
obstack_init(&ar->element_obstack);
|
||
|
||
next_byte(abfd); /* Drop the ad part */
|
||
must_parse_int(abfd); /* And the two dummy numbers */
|
||
must_parse_int(abfd);
|
||
|
||
loop = true;
|
||
/* Read the index of the BB table */
|
||
while (loop) {
|
||
ieee_ar_obstack_type t;
|
||
int rec =read_2bytes(abfd);
|
||
if (rec ==ieee_assign_value_to_variable_enum) {
|
||
int record_number = must_parse_int(abfd);
|
||
t.file_offset = must_parse_int(abfd);
|
||
t.abfd = (bfd *)NULL;
|
||
ar->element_count++;
|
||
obstack_grow(&ar->element_obstack, (PTR)&t, sizeof(t));
|
||
}
|
||
else loop = false;
|
||
}
|
||
ar->elements = (ieee_ar_obstack_type *)obstack_base(&ar->element_obstack);
|
||
|
||
/* Now scan the area again, and replace BB offsets with file */
|
||
/* offsets */
|
||
|
||
|
||
for (i = 2; i < ar->element_count; i++) {
|
||
ieee_seek(abfd, ar->elements[i].file_offset);
|
||
next_byte(abfd); /* Drop F8 */
|
||
next_byte(abfd); /* Drop 14 */
|
||
must_parse_int(abfd); /* Drop size of block */
|
||
if (must_parse_int(abfd) != 0) {
|
||
/* This object has been deleted */
|
||
ar->elements[i].file_offset = 0;
|
||
}
|
||
else {
|
||
ar->elements[i].file_offset = must_parse_int(abfd);
|
||
}
|
||
}
|
||
|
||
obstack_finish(&ar->element_obstack);
|
||
return abfd->xvec;
|
||
}
|
||
|
||
static boolean
|
||
DEFUN(ieee_mkobject,(abfd),
|
||
bfd *abfd)
|
||
{
|
||
struct obstack tmp_obstack;
|
||
ieee_data_type *ieee;
|
||
obstack_init(&tmp_obstack);
|
||
BFD_ASSERT(ieee_data(abfd) == 0);
|
||
ieee_data(abfd) =
|
||
(ieee_data_type*)obstack_alloc(&tmp_obstack,sizeof(ieee_data_type));
|
||
ieee = ieee_data(abfd);
|
||
ieee->ieee_obstack = tmp_obstack;
|
||
return true;
|
||
}
|
||
|
||
bfd_target *
|
||
DEFUN(ieee_object_p,(abfd),
|
||
bfd *abfd)
|
||
{
|
||
char *processor;
|
||
unsigned int part;
|
||
ieee_data_type *ieee;
|
||
char buffer[300];
|
||
ieee_data(abfd) = 0;
|
||
ieee_mkobject(abfd);
|
||
ieee = ieee_data(abfd);
|
||
|
||
/* Read the first few bytes in to see if it makes sense */
|
||
bfd_read(buffer, 1, sizeof(buffer), abfd);
|
||
|
||
ptr(abfd)= buffer;
|
||
if (*(ptr(abfd)++) != Module_Beginning) goto fail;
|
||
|
||
|
||
ieee->read_symbols= false;
|
||
ieee->read_data= false;
|
||
ieee->section_count = 0;
|
||
ieee->external_symbol_max_index = 0;
|
||
ieee->external_symbol_min_index = IEEE_PUBLIC_BASE;
|
||
ieee->external_reference_min_index =IEEE_REFERENCE_BASE;
|
||
ieee->external_reference_max_index = 0;
|
||
memset((PTR)ieee->section_table, 0, sizeof(ieee->section_table));
|
||
|
||
processor = ieee->mb.processor = read_id(abfd);
|
||
if (strcmp(processor,"LIBRARY") == 0) goto fail;
|
||
ieee->mb.module_name = read_id(abfd);
|
||
if (abfd->filename == (char *)NULL) {
|
||
abfd->filename = ieee->mb.module_name;
|
||
}
|
||
/* Determine the architecture and machine type of the object file. */
|
||
bfd_scan_arch_mach(processor, &abfd->obj_arch, &abfd->obj_machine);
|
||
|
||
if (this_byte(abfd) != ieee_address_descriptor_enum) {
|
||
goto fail;
|
||
}
|
||
next_byte(abfd);
|
||
|
||
if (parse_int(abfd, &ieee->ad.number_of_bits_mau) == false) {
|
||
goto fail;
|
||
}
|
||
if(parse_int(abfd, &ieee->ad.number_of_maus_in_address) == false) {
|
||
goto fail;
|
||
}
|
||
|
||
/* If there is a byte order info, take it */
|
||
if (this_byte(abfd) == ieee_variable_L_enum ||
|
||
this_byte(abfd) == ieee_variable_M_enum)
|
||
next_byte(abfd);
|
||
|
||
|
||
for (part = 0; part < N_W_VARIABLES; part++) {
|
||
boolean ok;
|
||
if (read_2bytes(abfd) != ieee_assign_value_to_variable_enum) {
|
||
goto fail;
|
||
}
|
||
if (this_byte_and_next(abfd) != part) {
|
||
goto fail;
|
||
}
|
||
|
||
ieee->w.offset[part] = parse_i(abfd, &ok);
|
||
if (ok==false) {
|
||
goto fail;
|
||
}
|
||
|
||
}
|
||
abfd->flags = HAS_SYMS;
|
||
|
||
/* By now we know that this is a real IEEE file, we're going to read
|
||
the whole thing into memory so that we can run up and down it
|
||
quickly. We can work out how big the file is from the trailer
|
||
record */
|
||
|
||
ieee_data(abfd)->first_byte = ieee_malloc(abfd, ieee->w.r.me_record
|
||
+ 50);
|
||
bfd_seek(abfd, 0, 0);
|
||
bfd_read(ieee_data(abfd)->first_byte, 1, ieee->w.r.me_record+50, abfd);
|
||
|
||
ieee_slurp_sections(abfd);
|
||
return abfd->xvec;
|
||
fail:
|
||
obstack_finish(&ieee->ieee_obstack);
|
||
return (bfd_target *)NULL;
|
||
}
|
||
|
||
|
||
void
|
||
DEFUN(ieee_print_symbol,(ignore_abfd, file, symbol, how),
|
||
bfd *ignore_abfd AND
|
||
FILE *file AND
|
||
asymbol *symbol AND
|
||
bfd_print_symbol_enum_type how)
|
||
{
|
||
switch (how) {
|
||
case bfd_print_symbol_name_enum:
|
||
fprintf(file,"%s", symbol->name);
|
||
break;
|
||
case bfd_print_symbol_type_enum:
|
||
#if 0
|
||
fprintf(file,"%4x %2x",aout_symbol(symbol)->desc & 0xffff,
|
||
aout_symbol(symbol)->other & 0xff);
|
||
#endif
|
||
BFD_FAIL();
|
||
break;
|
||
case bfd_print_symbol_all_enum:
|
||
{
|
||
CONST char *section_name = symbol->section == (asection *)NULL ?
|
||
"*abs" : symbol->section->name;
|
||
|
||
bfd_print_symbol_vandf((void *)file,symbol);
|
||
|
||
fprintf(file," %-5s %04x %02x %s",
|
||
section_name,
|
||
(unsigned) ieee_symbol(symbol)->index,
|
||
(unsigned) 0, /*
|
||
aout_symbol(symbol)->desc & 0xffff,
|
||
aout_symbol(symbol)->other & 0xff,*/
|
||
symbol->name);
|
||
}
|
||
break;
|
||
}
|
||
}
|
||
|
||
|
||
|
||
/* Read in all the section data and relocation stuff too */
|
||
static boolean
|
||
DEFUN(ieee_slurp_section_data,(abfd),
|
||
bfd *abfd)
|
||
{
|
||
bfd_byte *location_ptr ;
|
||
ieee_data_type *ieee = ieee_data(abfd);
|
||
unsigned int section_number ;
|
||
|
||
ieee_per_section_type *current_map;
|
||
asection *s;
|
||
/* Seek to the start of the data area */
|
||
if (ieee->read_data== true) return true;
|
||
ieee->read_data = true;
|
||
ieee_seek(abfd, ieee->w.r.data_part);
|
||
|
||
/* Allocate enough space for all the section contents */
|
||
|
||
|
||
for (s = abfd->sections; s != (asection *)NULL; s = s->next) {
|
||
ieee_per_section_type *per = (ieee_per_section_type *) s->used_by_bfd;
|
||
per->data = (bfd_byte *) ieee_malloc(abfd, s->size);
|
||
/*SUPPRESS 68*/
|
||
per->reloc_tail_ptr =
|
||
(ieee_reloc_type **)&(s->relocation);
|
||
}
|
||
|
||
|
||
|
||
while (true) {
|
||
switch (this_byte(abfd))
|
||
{
|
||
/* IF we see anything strange then quit */
|
||
default:
|
||
return true;
|
||
|
||
case ieee_set_current_section_enum:
|
||
next_byte(abfd);
|
||
section_number = must_parse_int(abfd);
|
||
s = ieee->section_table[section_number];
|
||
current_map = (ieee_per_section_type *) s->used_by_bfd;
|
||
location_ptr = current_map->data - s->vma;
|
||
/* The document I have says that Microtec's compilers reset */
|
||
/* this after a sec section, even though the standard says not */
|
||
/* to. SO .. */
|
||
current_map->pc =s->vma;
|
||
break;
|
||
|
||
case ieee_load_constant_bytes_enum:
|
||
{
|
||
unsigned int number_of_maus;
|
||
unsigned int i;
|
||
next_byte(abfd);
|
||
number_of_maus = must_parse_int(abfd);
|
||
|
||
for (i = 0; i < number_of_maus; i++) {
|
||
location_ptr[current_map->pc++]= this_byte(abfd);
|
||
next_byte(abfd);
|
||
}
|
||
}
|
||
break;
|
||
|
||
case ieee_e2_first_byte_enum:
|
||
next_byte(abfd);
|
||
switch (this_byte(abfd))
|
||
{
|
||
case ieee_set_current_pc_enum & 0xff:
|
||
{
|
||
bfd_vma value;
|
||
asection *dsection;
|
||
ieee_symbol_index_type symbol;
|
||
unsigned int extra;
|
||
boolean pcrel;
|
||
next_byte(abfd);
|
||
must_parse_int(abfd); /* Thow away section #*/
|
||
parse_expression(abfd, &value, &dsection, &symbol, &pcrel, &extra);
|
||
current_map->pc = value;
|
||
BFD_ASSERT((unsigned)(value - s->vma) <= s->size);
|
||
}
|
||
break;
|
||
|
||
case ieee_value_starting_address_enum & 0xff:
|
||
/* We've got to the end of the data now - */
|
||
return true;
|
||
break;
|
||
default:
|
||
BFD_FAIL();
|
||
return true;
|
||
}
|
||
break;
|
||
case ieee_load_with_relocation_enum:
|
||
{
|
||
boolean loop = true;
|
||
next_byte(abfd);
|
||
while (loop)
|
||
{
|
||
switch (this_byte(abfd))
|
||
{
|
||
case ieee_variable_R_enum:
|
||
|
||
case ieee_function_signed_open_b_enum:
|
||
case ieee_function_unsigned_open_b_enum:
|
||
case ieee_function_either_open_b_enum:
|
||
{
|
||
unsigned int extra;
|
||
boolean pcrel;
|
||
|
||
ieee_reloc_type *r =
|
||
(ieee_reloc_type *) ieee_malloc(abfd,
|
||
sizeof(ieee_reloc_type));
|
||
|
||
*(current_map->reloc_tail_ptr) = r;
|
||
current_map->reloc_tail_ptr= &r->next;
|
||
r->next = (ieee_reloc_type *)NULL;
|
||
next_byte(abfd);
|
||
parse_expression(abfd,
|
||
&r->relent.addend,
|
||
&r->relent.section,
|
||
&r->symbol,
|
||
&pcrel,
|
||
&extra);
|
||
r->relent.address = current_map->pc;
|
||
s->reloc_count++;
|
||
switch (this_byte(abfd)) {
|
||
case ieee_function_signed_close_b_enum:
|
||
next_byte(abfd);
|
||
break;
|
||
case ieee_function_unsigned_close_b_enum:
|
||
next_byte(abfd);
|
||
break;
|
||
case ieee_function_either_close_b_enum:
|
||
next_byte(abfd);
|
||
break;
|
||
default:
|
||
break;
|
||
}
|
||
/* Build a relocation entry for this type */
|
||
if (this_byte(abfd) == ieee_comma) {
|
||
|
||
next_byte(abfd);
|
||
/* Fetch number of bytes to pad */
|
||
extra = must_parse_int(abfd);
|
||
BFD_FAIL();
|
||
}
|
||
switch (extra) {
|
||
case 0:
|
||
case 4:
|
||
location_ptr[current_map->pc++] = 0;
|
||
location_ptr[current_map->pc++] = 0;
|
||
location_ptr[current_map->pc++] = 0;
|
||
location_ptr[current_map->pc++] = 0;
|
||
r->relent.howto = &abs32_howto;
|
||
break;
|
||
case 2:
|
||
location_ptr[current_map->pc++] = 0;
|
||
location_ptr[current_map->pc++] = 0;
|
||
r->relent.howto = &abs16_howto;
|
||
break;
|
||
|
||
default:
|
||
BFD_FAIL();
|
||
break;
|
||
}
|
||
}
|
||
break;
|
||
default:
|
||
{
|
||
bfd_vma this_size ;
|
||
if (parse_int(abfd, &this_size) == true) {
|
||
unsigned int i;
|
||
for (i = 0; i < this_size; i++) {
|
||
location_ptr[current_map->pc ++] = this_byte(abfd);
|
||
next_byte(abfd);
|
||
}
|
||
}
|
||
else {
|
||
loop = false;
|
||
}
|
||
}
|
||
}
|
||
}
|
||
}
|
||
}
|
||
}
|
||
}
|
||
|
||
|
||
|
||
boolean
|
||
DEFUN(ieee_new_section_hook,(abfd, newsect),
|
||
bfd *abfd AND
|
||
asection *newsect)
|
||
{
|
||
newsect->used_by_bfd = (PTR)
|
||
ieee_malloc(abfd, sizeof(ieee_per_section_type));
|
||
ieee_per_section( newsect)->data = (bfd_byte *)NULL;
|
||
ieee_per_section(newsect)->section = newsect;
|
||
return true;
|
||
}
|
||
|
||
|
||
unsigned int
|
||
DEFUN(ieee_get_reloc_upper_bound,(abfd, asect),
|
||
bfd *abfd AND
|
||
sec_ptr asect)
|
||
{
|
||
ieee_slurp_section_data(abfd);
|
||
return (asect->reloc_count+1) * sizeof(arelent *);
|
||
}
|
||
|
||
static boolean
|
||
DEFUN(ieee_get_section_contents,(abfd, section, location, offset, count),
|
||
bfd *abfd AND
|
||
sec_ptr section AND
|
||
void *location AND
|
||
file_ptr offset AND
|
||
unsigned int count)
|
||
{
|
||
ieee_per_section_type *p = (ieee_per_section_type *) section->used_by_bfd;
|
||
ieee_slurp_section_data(abfd);
|
||
(void) memcpy(location, p->data + offset, count);
|
||
return true;
|
||
}
|
||
|
||
|
||
unsigned int
|
||
DEFUN(ieee_canonicalize_reloc,(abfd, section, relptr, symbols),
|
||
bfd *abfd AND
|
||
sec_ptr section AND
|
||
arelent **relptr AND
|
||
asymbol **symbols)
|
||
{
|
||
ieee_per_section_type *p = (ieee_per_section_type *) section->used_by_bfd;
|
||
ieee_reloc_type *src = (ieee_reloc_type *)(section->relocation);
|
||
ieee_data_type *ieee = ieee_data(abfd);
|
||
|
||
while (src != (ieee_reloc_type *)NULL) {
|
||
/* Work out which symbol to attatch it this reloc to */
|
||
switch (src->symbol.letter) {
|
||
case 'X':
|
||
src->relent.sym_ptr_ptr =
|
||
symbols + src->symbol.index + ieee->external_reference_base_offset;
|
||
break;
|
||
case 0:
|
||
src->relent.sym_ptr_ptr = (asymbol **)NULL;
|
||
break;
|
||
default:
|
||
|
||
BFD_FAIL();
|
||
}
|
||
*relptr++ = &src->relent;
|
||
src = src->next;
|
||
}
|
||
*relptr = (arelent *)NULL;
|
||
return section->reloc_count;
|
||
}
|
||
|
||
boolean
|
||
DEFUN(ieee_set_arch_mach,(abfd, arch, machine),
|
||
bfd *abfd AND
|
||
enum bfd_architecture arch AND
|
||
unsigned long machine)
|
||
{
|
||
abfd->obj_arch = arch;
|
||
abfd->obj_machine = machine;
|
||
return true;
|
||
}
|
||
|
||
|
||
static int
|
||
DEFUN(comp,(ap, bp),
|
||
CONST PTR ap AND
|
||
CONST PTR bp)
|
||
{
|
||
arelent *a = *((arelent **)ap);
|
||
arelent *b = *((arelent **)bp);
|
||
return a->address - b->address;
|
||
}
|
||
|
||
/*
|
||
Write the section headers
|
||
*/
|
||
|
||
static void
|
||
DEFUN(ieee_write_section_part,(abfd),
|
||
bfd *abfd)
|
||
{
|
||
ieee_data_type *ieee = ieee_data(abfd);
|
||
asection *s;
|
||
ieee->w.r.section_part = bfd_tell(abfd);
|
||
for (s = abfd->sections; s != (asection *)NULL; s=s->next) {
|
||
ieee_write_byte(abfd, ieee_section_type_enum);
|
||
ieee_write_byte(abfd, s->index + IEEE_SECTION_NUMBER_BASE);
|
||
|
||
switch (s->flags & (SEC_LOAD | SEC_CODE | SEC_DATA | SEC_ROM)) {
|
||
case SEC_LOAD | SEC_CODE:
|
||
/* Normal named section, code */
|
||
ieee_write_byte(abfd, ieee_variable_C_enum);
|
||
ieee_write_byte(abfd, ieee_variable_P_enum);
|
||
break;
|
||
case SEC_LOAD | SEC_DATA:
|
||
/* Normal named section, data */
|
||
ieee_write_byte(abfd, ieee_variable_C_enum);
|
||
ieee_write_byte(abfd, ieee_variable_D_enum);
|
||
break;
|
||
case SEC_LOAD | SEC_DATA | SEC_ROM:
|
||
/* Normal named section, data rom */
|
||
ieee_write_byte(abfd, ieee_variable_C_enum);
|
||
ieee_write_byte(abfd, ieee_variable_R_enum);
|
||
break;
|
||
default:
|
||
ieee_write_byte(abfd, ieee_variable_C_enum);
|
||
break;
|
||
}
|
||
|
||
ieee_write_id(abfd, s->name);
|
||
ieee_write_int(abfd, 0); /* Parent */
|
||
ieee_write_int(abfd, 0); /* Brother */
|
||
ieee_write_int(abfd, 0); /* Context */
|
||
|
||
/* Alignment */
|
||
ieee_write_byte(abfd, ieee_section_alignment_enum);
|
||
ieee_write_byte(abfd, s->index + IEEE_SECTION_NUMBER_BASE);
|
||
ieee_write_int(abfd, 1 << s->alignment_power);
|
||
|
||
/* Size */
|
||
ieee_write_2bytes(abfd, ieee_section_size_enum);
|
||
ieee_write_byte(abfd, s->index + IEEE_SECTION_NUMBER_BASE);
|
||
ieee_write_int(abfd, s->size);
|
||
|
||
/* Vma */
|
||
ieee_write_2bytes(abfd, ieee_region_base_address_enum);
|
||
ieee_write_byte(abfd, s->index + IEEE_SECTION_NUMBER_BASE);
|
||
ieee_write_int(abfd, s->vma);
|
||
|
||
}
|
||
}
|
||
|
||
|
||
|
||
/* write the data in an ieee way */
|
||
static void
|
||
DEFUN(ieee_write_data_part,(abfd),
|
||
bfd *abfd)
|
||
{
|
||
asection *s;
|
||
ieee_data_type *ieee = ieee_data(abfd);
|
||
ieee->w.r.data_part = bfd_tell(abfd);
|
||
for (s = abfd->sections; s != (asection *)NULL; s = s->next)
|
||
{
|
||
bfd_byte header[11];
|
||
bfd_byte *stream = ieee_per_section(s)->data;
|
||
arelent **p = s->orelocation;
|
||
unsigned int relocs_to_go = s->reloc_count;
|
||
size_t current_byte_index = 0;
|
||
|
||
|
||
/* Sort the reloc records so we can insert them in the correct
|
||
places */
|
||
if (s->reloc_count != 0) {
|
||
qsort(s->orelocation,
|
||
s->reloc_count,
|
||
sizeof(arelent **),
|
||
comp);
|
||
}
|
||
|
||
|
||
/* Output the section preheader */
|
||
header[0] =ieee_set_current_section_enum;
|
||
header[1] = s->index + IEEE_SECTION_NUMBER_BASE;
|
||
|
||
header[2] = ieee_set_current_pc_enum >> 8;
|
||
header[3]= ieee_set_current_pc_enum & 0xff;
|
||
header[4] = s->index + IEEE_SECTION_NUMBER_BASE;
|
||
ieee_write_int5(header+5, s->vma );
|
||
header[10] = ieee_load_with_relocation_enum;
|
||
bfd_write(header, 1, sizeof(header), abfd);
|
||
|
||
/* Output the data stream as the longest sequence of bytes
|
||
possible, allowing for the a reasonable packet size and
|
||
relocation stuffs */
|
||
|
||
if (stream == (void *)NULL) {
|
||
/* Outputting a section without data, fill it up */
|
||
stream = ieee_malloc(abfd, s->size);
|
||
memset(stream, 0, s->size);
|
||
}
|
||
while (current_byte_index < s->size) {
|
||
size_t run;
|
||
unsigned int MAXRUN = 32;
|
||
if (p && *p) {
|
||
run = (*p)->address - current_byte_index;
|
||
}
|
||
else {
|
||
run = MAXRUN;
|
||
}
|
||
if (run > s->size - current_byte_index) {
|
||
run = s->size - current_byte_index;
|
||
}
|
||
|
||
if (run != 0) {
|
||
/* Output a stream of bytes */
|
||
ieee_write_int(abfd, run);
|
||
bfd_write(stream + current_byte_index,
|
||
1,
|
||
run,
|
||
abfd);
|
||
current_byte_index += run;
|
||
}
|
||
/* Output any relocations here */
|
||
if (relocs_to_go && (*p) && (*p)->address == current_byte_index) {
|
||
while (relocs_to_go && (*p) && (*p)->address == current_byte_index) {
|
||
|
||
arelent *r = *p;
|
||
ieee_write_byte(abfd, ieee_function_either_open_b_enum);
|
||
if (r->sym_ptr_ptr != (asymbol **)NULL) {
|
||
ieee_write_expression(abfd, r->addend,
|
||
r->section,
|
||
*(r->sym_ptr_ptr));
|
||
}
|
||
else {
|
||
ieee_write_expression(abfd, r->addend,
|
||
r->section,
|
||
(asymbol *)NULL);
|
||
}
|
||
ieee_write_byte(abfd,
|
||
ieee_function_either_close_b_enum);
|
||
relocs_to_go --;
|
||
p++;
|
||
}
|
||
/* FIXME !! Are all relocations 4 bytes ? */
|
||
current_byte_index += 4;
|
||
}
|
||
}
|
||
}
|
||
|
||
}
|
||
|
||
|
||
|
||
static void
|
||
DEFUN(init_for_output,(abfd),
|
||
bfd *abfd)
|
||
{
|
||
asection *s;
|
||
for (s = abfd->sections; s != (asection *)NULL; s = s->next) {
|
||
if (s->size != 0) {
|
||
ieee_per_section(s)->data = (bfd_byte *)(ieee_malloc(abfd, s->size));
|
||
}
|
||
}
|
||
}
|
||
|
||
/** exec and core file sections */
|
||
|
||
/* set section contents is complicated with IEEE since the format is
|
||
* not a byte image, but a record stream.
|
||
*/
|
||
boolean
|
||
DEFUN(ieee_set_section_contents,(abfd, section, location, offset, count),
|
||
bfd *abfd AND
|
||
sec_ptr section AND
|
||
unsigned char *location AND
|
||
file_ptr offset AND
|
||
int count)
|
||
{
|
||
if (ieee_per_section(section)->data == (bfd_byte *)NULL) {
|
||
init_for_output(abfd);
|
||
}
|
||
(void) memcpy(ieee_per_section(section)->data + offset, location, count);
|
||
return true;
|
||
}
|
||
|
||
/*
|
||
write the external symbols of a file, IEEE considers two sorts of
|
||
external symbols, public, and referenced. It uses to internal forms
|
||
to index them as well. When we write them out we turn their symbol
|
||
values into indexes from the right base.
|
||
*/
|
||
static void
|
||
DEFUN(ieee_write_external_part,(abfd),
|
||
bfd *abfd)
|
||
{
|
||
asymbol **q;
|
||
ieee_data_type *ieee = ieee_data(abfd);
|
||
|
||
unsigned int reference_index = IEEE_REFERENCE_BASE;
|
||
unsigned int public_index = IEEE_PUBLIC_BASE;
|
||
ieee->w.r.external_part = bfd_tell(abfd);
|
||
if (abfd->outsymbols != (asymbol **)NULL) {
|
||
for (q = abfd->outsymbols; *q != (asymbol *)NULL; q++) {
|
||
asymbol *p = *q;
|
||
if (p->flags & BSF_UNDEFINED) {
|
||
/* This must be a symbol reference .. */
|
||
ieee_write_byte(abfd, ieee_external_reference_enum);
|
||
ieee_write_int(abfd, reference_index);
|
||
ieee_write_id(abfd, p->name);
|
||
p->value = reference_index;
|
||
reference_index++;
|
||
}
|
||
else if(p->flags & BSF_FORT_COMM) {
|
||
/* This is a weak reference */
|
||
ieee_write_byte(abfd, ieee_external_reference_enum);
|
||
ieee_write_int(abfd, reference_index);
|
||
ieee_write_id(abfd, p->name);
|
||
ieee_write_byte(abfd, ieee_weak_external_reference_enum);
|
||
ieee_write_int(abfd, reference_index);
|
||
ieee_write_int(abfd, p->value);
|
||
ieee_write_int(abfd, BFD_FORT_COMM_DEFAULT_VALUE);
|
||
p->value = reference_index;
|
||
reference_index++;
|
||
}
|
||
else if(p->flags & BSF_GLOBAL) {
|
||
/* This must be a symbol definition */
|
||
|
||
ieee_write_byte(abfd, ieee_external_symbol_enum);
|
||
ieee_write_int(abfd, public_index );
|
||
ieee_write_id(abfd, p->name);
|
||
|
||
/* Write out the value */
|
||
ieee_write_2bytes(abfd, ieee_value_record_enum);
|
||
ieee_write_int(abfd, public_index);
|
||
if (p->section != (asection *)NULL)
|
||
{
|
||
ieee_write_expression(abfd,
|
||
p->value + p->section->output_offset,
|
||
p->section->output_section,
|
||
(asymbol *)NULL);
|
||
}
|
||
else
|
||
{
|
||
ieee_write_expression(abfd,
|
||
p->value,
|
||
(asection *)NULL,
|
||
(asymbol *)NULL);
|
||
}
|
||
p->value = public_index;
|
||
public_index++;
|
||
}
|
||
else {
|
||
/* This can happen - when there are gaps in the symbols read */
|
||
/* from an input ieee file */
|
||
}
|
||
}
|
||
}
|
||
|
||
}
|
||
|
||
static
|
||
void
|
||
DEFUN(ieee_write_me_part,(abfd),
|
||
bfd *abfd)
|
||
{
|
||
ieee_data_type *ieee= ieee_data(abfd);
|
||
ieee->w.r.me_record = bfd_tell(abfd);
|
||
|
||
ieee_write_2bytes(abfd, ieee_value_starting_address_enum);
|
||
ieee_write_int(abfd, abfd->start_address);
|
||
ieee_write_byte(abfd, ieee_module_end_enum);
|
||
|
||
}
|
||
boolean
|
||
DEFUN(ieee_write_object_contents,(abfd),
|
||
bfd *abfd)
|
||
{
|
||
ieee_data_type *ieee = ieee_data(abfd);
|
||
unsigned int i;
|
||
file_ptr old;
|
||
/* Fast forward over the header area */
|
||
bfd_seek(abfd, 0, 0);
|
||
ieee_write_byte(abfd, ieee_module_beginning_enum);
|
||
|
||
ieee_write_id(abfd, bfd_printable_arch_mach(abfd->obj_arch,
|
||
abfd->obj_machine));
|
||
ieee_write_id(abfd, abfd->filename);
|
||
ieee_write_byte(abfd, ieee_address_descriptor_enum);
|
||
ieee_write_byte(abfd, 8); /* Bits per MAU */
|
||
ieee_write_byte(abfd, 4); /* MAU's per address */
|
||
|
||
/* Fast forward over the variable bits */
|
||
old = bfd_tell(abfd);
|
||
bfd_seek(abfd, 8 * N_W_VARIABLES, 1);
|
||
|
||
/*
|
||
First write the symbols, this changes their values into table
|
||
indeces so we cant use it after this point
|
||
*/
|
||
ieee_write_external_part(abfd);
|
||
ieee_write_byte(abfd, ieee_record_seperator_enum);
|
||
|
||
ieee_write_section_part(abfd);
|
||
ieee_write_byte(abfd, ieee_record_seperator_enum);
|
||
/*
|
||
Can only write the data once the symbols have been written since
|
||
the data contains relocation information which points to the
|
||
symbols
|
||
*/
|
||
ieee_write_data_part(abfd);
|
||
ieee_write_byte(abfd, ieee_record_seperator_enum);
|
||
|
||
/*
|
||
At the end we put the end !
|
||
*/
|
||
ieee_write_me_part(abfd);
|
||
|
||
|
||
/* Generate the header */
|
||
bfd_seek(abfd, old, false);
|
||
|
||
for (i= 0; i < N_W_VARIABLES; i++) {
|
||
ieee_write_2bytes(abfd,ieee_assign_value_to_variable_enum);
|
||
ieee_write_byte(abfd, i);
|
||
ieee_write_int5_out(abfd, ieee->w.offset[i]);
|
||
}
|
||
return true;
|
||
}
|
||
|
||
|
||
|
||
|
||
/* Native-level interface to symbols. */
|
||
|
||
/* We read the symbols into a buffer, which is discarded when this
|
||
function exits. We read the strings into a buffer large enough to
|
||
hold them all plus all the cached symbol entries. */
|
||
|
||
asymbol *
|
||
DEFUN(ieee_make_empty_symbol,(abfd),
|
||
bfd *abfd)
|
||
{
|
||
|
||
ieee_symbol_type *new =
|
||
(ieee_symbol_type *)zalloc (sizeof (ieee_symbol_type));
|
||
new->symbol.the_bfd = abfd;
|
||
return &new->symbol;
|
||
|
||
}
|
||
|
||
void
|
||
DEFUN(ieee_reclaim_symbol_table, (abfd),
|
||
bfd *abfd)
|
||
{
|
||
#if 0
|
||
asection *section;
|
||
|
||
if (!bfd_get_symcount (abfd)) return;
|
||
|
||
for (section = abfd->sections; section != NULL; section = section->next)
|
||
if (section->relocation) {
|
||
free ((void *)section->relocation);
|
||
section->relocation = NULL;
|
||
section->reloc_count = 0;
|
||
}
|
||
|
||
bfd_get_symcount (abfd) = 0;
|
||
free ((void *)obj_aout_symbols (abfd));
|
||
obj_aout_symbols (abfd) = (aout_symbol_type *)NULL;
|
||
#endif
|
||
}
|
||
|
||
|
||
|
||
|
||
/* Obsolete procedural interface; better to look at the cache directly */
|
||
|
||
/* User should have checked the file flags; perhaps we should return
|
||
BFD_NO_MORE_SYMBOLS if there are none? */
|
||
|
||
int
|
||
DEFUN(ieee_get_symcount_upper_bound,(abfd),
|
||
bfd *abfd)
|
||
{
|
||
#if 0
|
||
/* In case we're doing an output file or something...? */
|
||
if (bfd_get_symcount (abfd)) return bfd_get_symcount (abfd);
|
||
|
||
return (exec_hdr (abfd)->a_syms) / (sizeof (struct nlist));
|
||
#endif
|
||
return 0;
|
||
}
|
||
|
||
symindex
|
||
DEFUN(ieee_get_first_symbol,(ignore_abfd),
|
||
bfd * ignore_abfd)
|
||
{
|
||
return 0;
|
||
}
|
||
|
||
symindex
|
||
DEFUN(ieee_get_next_symbol,(abfd, oidx),
|
||
bfd *abfd AND
|
||
symindex oidx)
|
||
{
|
||
#if 0
|
||
if (oidx == BFD_NO_MORE_SYMBOLS) return BFD_NO_MORE_SYMBOLS;
|
||
return ++oidx >= bfd_get_symcount (abfd) ? BFD_NO_MORE_SYMBOLS :
|
||
oidx;
|
||
#endif
|
||
return 0;
|
||
}
|
||
|
||
char *
|
||
ieee_symbol_name (abfd, idx)
|
||
bfd *abfd;
|
||
symindex idx;
|
||
{
|
||
#if 0
|
||
return (obj_aout_symbols (abfd) + idx)->symbol.name;
|
||
#endif
|
||
return 0;
|
||
}
|
||
|
||
long
|
||
ieee_symbol_value (abfd, idx)
|
||
bfd *abfd;
|
||
symindex idx;
|
||
{
|
||
#if 0
|
||
return (obj_aout_symbols (abfd) + idx)->symbol.value;
|
||
#endif
|
||
return 0;
|
||
}
|
||
|
||
symclass
|
||
ieee_classify_symbol (abfd, idx)
|
||
bfd *abfd;
|
||
symindex idx;
|
||
{
|
||
#if 0
|
||
aout_symbol_type *sym = obj_aout_symbols (abfd) + idx;
|
||
|
||
if ((sym->symbol.flags & BSF_FORT_COMM) != 0) return bfd_symclass_fcommon;
|
||
if ((sym->symbol.flags & BSF_GLOBAL) != 0) return bfd_symclass_global;
|
||
if ((sym->symbol.flags & BSF_DEBUGGING) != 0) return bfd_symclass_debugger;
|
||
if ((sym->symbol.flags & BSF_UNDEFINED) != 0) return bfd_symclass_undefined;
|
||
#endif
|
||
return bfd_symclass_unknown;
|
||
}
|
||
|
||
boolean
|
||
ieee_symbol_hasclass (abfd, idx, class)
|
||
bfd *abfd;
|
||
symindex idx;
|
||
symclass class;
|
||
{
|
||
#if 0
|
||
aout_symbol_type *sym = obj_aout_symbols (abfd) + idx;
|
||
switch (class) {
|
||
case bfd_symclass_fcommon:
|
||
return (sym->symbol.flags & BSF_FORT_COMM) ? true :false;
|
||
case bfd_symclass_global:
|
||
return (sym->symbol.flags & BSF_GLOBAL) ? true:false;
|
||
case bfd_symclass_debugger:
|
||
return (sym->symbol.flags & BSF_DEBUGGING) ? true:false;;
|
||
case bfd_symclass_undefined:
|
||
return (sym->symbol.flags & BSF_UNDEFINED) ? true:false;;
|
||
default: return false;
|
||
}
|
||
#endif
|
||
return 0;
|
||
}
|
||
|
||
|
||
void
|
||
ieee_reclaim_reloc (ignore_abfd, section)
|
||
bfd *ignore_abfd;
|
||
sec_ptr section;
|
||
{
|
||
#if 0
|
||
if (section->relocation) {
|
||
free (section->relocation);
|
||
section->relocation = NULL;
|
||
section->reloc_count = 0;
|
||
}
|
||
#endif
|
||
}
|
||
|
||
boolean
|
||
ieee_close_and_cleanup (abfd)
|
||
bfd *abfd;
|
||
{
|
||
if (bfd_read_p (abfd) == false)
|
||
switch (abfd->format) {
|
||
case bfd_archive:
|
||
if (!_bfd_write_archive_contents (abfd)) {
|
||
return false;
|
||
}
|
||
break;
|
||
case bfd_object:
|
||
if (!ieee_write_object_contents (abfd)) {
|
||
return false;
|
||
}
|
||
break;
|
||
default:
|
||
bfd_error = invalid_operation;
|
||
return false;
|
||
}
|
||
|
||
|
||
if (ieee_data(abfd) != (ieee_data_type *)NULL) {
|
||
/* FIXME MORE LEAKS */
|
||
|
||
}
|
||
|
||
return true;
|
||
}
|
||
|
||
static bfd *
|
||
ieee_openr_next_archived_file(arch, prev)
|
||
bfd *arch;
|
||
bfd *prev;
|
||
{
|
||
ieee_ar_data_type *ar = ieee_ar_data(arch);
|
||
/* take the next one from the arch state, or reset */
|
||
if (prev == (bfd *)NULL) {
|
||
/* Reset the index - the first two entries are bogus*/
|
||
ar->element_index = 2;
|
||
}
|
||
while (true) {
|
||
ieee_ar_obstack_type *p = ar->elements + ar->element_index;
|
||
ar->element_index++;
|
||
if (ar->element_index <= ar->element_count) {
|
||
if (p->file_offset != (file_ptr)0) {
|
||
if (p->abfd == (bfd *)NULL) {
|
||
p->abfd = _bfd_create_empty_archive_element_shell(arch);
|
||
p->abfd->origin = p->file_offset;
|
||
}
|
||
return p->abfd;
|
||
}
|
||
}
|
||
else {
|
||
return (bfd *)NULL;
|
||
}
|
||
|
||
}
|
||
}
|
||
|
||
static boolean
|
||
ieee_find_nearest_line(abfd,
|
||
section,
|
||
symbols,
|
||
offset,
|
||
filename_ptr,
|
||
functionname_ptr,
|
||
line_ptr)
|
||
bfd *abfd;
|
||
asection *section;
|
||
asymbol **symbols;
|
||
bfd_vma offset;
|
||
char **filename_ptr;
|
||
char **functionname_ptr;
|
||
unsigned int *line_ptr;
|
||
{
|
||
return false;
|
||
|
||
}
|
||
|
||
|
||
static int
|
||
ieee_generic_stat_arch_elt(abfd, buf)
|
||
bfd *abfd;
|
||
struct stat *buf;
|
||
{
|
||
ieee_ar_data_type *ar = ieee_ar_data(abfd);
|
||
if (ar == (ieee_ar_data_type *)NULL) {
|
||
bfd_error = invalid_operation;
|
||
return -1;
|
||
}
|
||
else {
|
||
buf->st_size = 0x1;
|
||
buf->st_mode = 0666;
|
||
return 0;
|
||
}
|
||
}
|
||
static int
|
||
DEFUN(ieee_sizeof_headers,(abfd),
|
||
bfd *abfd)
|
||
{
|
||
return 0;
|
||
}
|
||
|
||
#define ieee_core_file_failing_command bfd_false
|
||
#define ieee_core_file_failing_signal bfd_false
|
||
#define ieee_core_file_matches_executable_p bfd_false
|
||
#define ieee_slurp_armap bfd_true
|
||
#define ieee_slurp_extended_name_table bfd_true
|
||
#define ieee_truncate_arname bfd_false
|
||
#define ieee_write_armap bfd_false
|
||
#define ieee_get_lineno bfd_false
|
||
|
||
|
||
/*SUPPRESS 460 */
|
||
bfd_target ieee_vec =
|
||
{
|
||
"ieee", /* name */
|
||
bfd_target_ieee_flavour_enum,
|
||
true, /* target byte order */
|
||
true, /* target headers byte order */
|
||
(HAS_RELOC | EXEC_P | /* object flags */
|
||
HAS_LINENO | HAS_DEBUG |
|
||
HAS_SYMS | HAS_LOCALS | DYNAMIC | WP_TEXT | D_PAGED),
|
||
(SEC_CODE|SEC_DATA|SEC_ROM|SEC_HAS_CONTENTS
|
||
|SEC_ALLOC | SEC_LOAD | SEC_RELOC), /* section flags */
|
||
' ', /* ar_pad_char */
|
||
16, /* ar_max_namelen */
|
||
|
||
_do_getblong, _do_putblong, _do_getbshort, _do_putbshort, /* data */
|
||
_do_getblong, _do_putblong, _do_getbshort, _do_putbshort, /* hdrs */
|
||
|
||
{_bfd_dummy_target,
|
||
ieee_object_p, /* bfd_check_format */
|
||
ieee_archive_p,
|
||
bfd_false
|
||
},
|
||
{
|
||
bfd_false,
|
||
ieee_mkobject,
|
||
_bfd_generic_mkarchive,
|
||
bfd_false
|
||
},
|
||
JUMP_TABLE(ieee)
|
||
};
|