diff options
Diffstat (limited to 'gas/config/obj-coff-bfd.c')
| -rwxr-xr-x | gas/config/obj-coff-bfd.c | 2114 |
1 files changed, 0 insertions, 2114 deletions
diff --git a/gas/config/obj-coff-bfd.c b/gas/config/obj-coff-bfd.c deleted file mode 100755 index b2cb035..0000000 --- a/gas/config/obj-coff-bfd.c +++ /dev/null @@ -1,2114 +0,0 @@ -/* coff object file format with bfd - Copyright (C) 1989, 1990, 1991 Free Software Foundation, Inc. - -This file is part of GAS. - -GAS 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, or (at your option) -any later version. - -GAS 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 GAS; see the file COPYING. If not, write to -the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA. */ - -/* - - How does this releate to the rest of GAS ? - - Well, all the other files in gas are more or less a black box. It - takes care of opening files, parsing command lines, stripping blanks - etc etc. This module gets a chance to register what it wants to do by - saying that it is interested in various pseduo ops. The other big - change is write_object_file. This runs through all the data - structures that gas builds, and outputs the file in the format of our - choice. - - Hacked for BFDness by steve chamberlain - - This object module now supports the Hitachi H8/300 and the AMD 29k - - sac@cygnus.com -*/ - -#include "as.h" -#include "obstack.h" -#include "subsegs.h" -#include "frags.h" -#include "../bfd/libbfd.h" - - -/* This vector is used to turn an internal segment into a section # - suitable for insertion into a coff symbol table - */ - -const short seg_N_TYPE[] = { /* in: segT out: N_TYPE bits */ - C_ABS_SECTION, - 1, - 2, - 3, - 4, - 5, - 6, - 7, - 8, - 9, - 10, - C_UNDEF_SECTION, /* SEG_UNKNOWN */ - C_UNDEF_SECTION, /* SEG_ABSENT */ - C_UNDEF_SECTION, /* SEG_PASS1 */ - C_UNDEF_SECTION, /* SEG_GOOF */ - C_UNDEF_SECTION, /* SEG_BIG */ - C_UNDEF_SECTION, /* SEG_DIFFERENCE */ - C_DEBUG_SECTION, /* SEG_DEBUG */ - C_NTV_SECTION, /* SEG_NTV */ - C_PTV_SECTION, /* SEG_PTV */ - C_REGISTER_SECTION, /* SEG_REGISTER */ -}; - - -int function_lineoff = -1; /* Offset in line#s where the last function - started (the odd entry for line #0) */ - -int our_lineno_number = 0; /* we use this to build pointers from .bf's - into the linetable. It should match - exactly the values that are later - assigned in text_lineno_number by - write.c. */ - -int text_lineno_number = 0; - -/* Add 4 to the real value to get the index and compensate the - negatives. This vector is used by S_GET_SEGMENT to turn a coff - section number into a segment number -*/ -static symbolS *previous_file_symbol = NULL; -void c_symbol_merge(); - -symbolS *c_section_symbol(); -bfd *abfd; -void EXFUN(bfd_as_write_hook,(struct internal_filehdr *, - bfd *abfd)); - -static void EXFUN(fixup_segment,(fixS * fixP, - segT this_segment_type)); - -static void EXFUN(fill_section,(bfd *abfd , - struct internal_filehdr *f, unsigned - long *)); - - -char *EXFUN(s_get_name,(symbolS *s)); -static symbolS *EXFUN(tag_find_or_make,(char *name)); -static symbolS* EXFUN(tag_find,(char *name)); - - -static int -EXFUN(c_line_new,( - symbolS *symbol, - long paddr, - unsigned short line_number, - fragS* frag)); - - -static void EXFUN(w_symbols, - (bfd *abfd , - char *where , - symbolS *symbol_rootP)); - - - -static void EXFUN( obj_coff_def,(int what)); -static void EXFUN( obj_coff_lcomm,(void)); -static void EXFUN( obj_coff_dim,(void)); -static void EXFUN( obj_coff_text,(void)); -static void EXFUN( obj_coff_data,(void)); -static void EXFUN( obj_coff_endef,(void)); -static void EXFUN( obj_coff_line,(void)); -static void EXFUN( obj_coff_ln,(void)); -static void EXFUN( obj_coff_scl,(void)); -static void EXFUN( obj_coff_size,(void)); -static void EXFUN( obj_coff_tag,(void)); -static void EXFUN( obj_coff_type,(void)); -static void EXFUN( obj_coff_val,(void)); -static void EXFUN( obj_coff_section,(void)); -static void EXFUN( tag_init,(void)); -static void EXFUN( tag_insert,(char *name, symbolS *symbolP)); - - -static struct hash_control *tag_hash; -static symbolS *def_symbol_in_progress = NULL; - -const pseudo_typeS obj_pseudo_table[] = { - { "def", obj_coff_def, 0 }, - { "dim", obj_coff_dim, 0 }, - { "endef", obj_coff_endef, 0 }, - { "line", obj_coff_line, 0 }, - { "ln", obj_coff_ln, 0 }, - { "scl", obj_coff_scl, 0 }, - { "size", obj_coff_size, 0 }, - { "tag", obj_coff_tag, 0 }, - { "type", obj_coff_type, 0 }, - { "val", obj_coff_val, 0 }, - { "section", obj_coff_section, 0 }, - { "text", obj_coff_text, 0 }, - { "data", obj_coff_data, 0 }, - /* we don't yet handle this. */ - { "ident", s_ignore, 0 }, - { "ABORT", s_abort, 0 }, - { "lcomm", obj_coff_lcomm, 0}, - { NULL} /* end sentinel */ -}; /* obj_pseudo_table */ - - - -/* Section stuff - - We allow more than just the standard 3 sections, infact, we allow - 10 sections, (though the usual three have to be there). - - This structure performs the mappings for us: - -*/ - -/* OBS stuff -static struct internal_scnhdr bss_section_header; -struct internal_scnhdr data_section_header; -struct internal_scnhdr text_section_header; - -const segT N_TYPE_seg [32] = -{ - -}; - -*/ - -#define N_SEG 32 -typedef struct -{ - segT seg_t; -int i; -} seg_info_type; - -seg_info_type seg_info_off_by_4[N_SEG] = -{ -{SEG_PTV, }, -{SEG_NTV, }, -{SEG_DEBUG, }, -{SEG_ABSOLUTE, }, -{SEG_UNKNOWN, }, -{SEG_E0}, -{SEG_E1}, -{SEG_E2}, -{SEG_E3}, -{SEG_E4}, -{SEG_E5}, -{SEG_E6}, -{SEG_E7}, -{SEG_E8}, -{SEG_E9}, -{15}, -{16}, -{17}, -{18}, -{19}, -{20}, -{0}, -{0}, -{0}, -{SEG_REGISTER},0,0,0,0}; - -#define SEG_INFO_FROM_SECTION_NUMBER(x) (seg_info_off_by_4[(x)+4]) -#define SEG_INFO_FROM_SEG_NUMBER(x) (seg_info_off_by_4[(x)]) - - -static relax_addressT -DEFUN(relax_align,(address, alignment), -register relax_addressT address AND -register long alignment ) -{ - relax_addressT mask; - relax_addressT new_address; - - mask = ~ ( (~0) << alignment ); - new_address = (address + mask) & (~ mask); - return (new_address - address); -} /* relax_align() */ - - -segT -DEFUN(s_get_segment,(x) , -symbolS* x) -{ - return SEG_INFO_FROM_SECTION_NUMBER(x->sy_symbol.ost_entry.n_scnum).seg_t; -} - - - -/* calculate the size of the frag chain and fill in the section header - to contain all of it, also fill in the addr of the sections */ -static unsigned int DEFUN(size_section,(abfd, idx), - bfd *abfd AND - unsigned int idx) -{ - - unsigned int size = 0; - fragS *frag = segment_info[idx].frchainP->frch_root; - while (frag) { - if (frag->fr_address != size) { - printf("Out of step\n"); - size = frag->fr_address; - } - size += frag->fr_fix; - switch (frag->fr_type) { - case rs_fill: - case rs_org: - size += frag->fr_offset * frag->fr_var; - break; - case rs_align: - size += relax_align(size, frag->fr_offset); - } - frag = frag->fr_next; - } - segment_info[idx].scnhdr.s_size = size; - return size; -} - - -static unsigned int DEFUN(count_entries_in_chain,(idx), - unsigned int idx) -{ - unsigned int nrelocs; - fixS *fixup_ptr; - - /* Count the relocations */ - fixup_ptr = segment_info[idx].fix_root; - nrelocs = 0; - while (fixup_ptr != (fixS *)NULL) - { - if (TC_COUNT_RELOC(fixup_ptr)) - { - -#ifdef TC_A29K - - if (fixup_ptr->fx_r_type == RELOC_CONSTH) - nrelocs+=2; - else - nrelocs++; -#else - nrelocs++; -#endif - } - - fixup_ptr = fixup_ptr->fx_next; - } - return nrelocs; -} - -/* output all the relocations for a section */ -void DEFUN(do_relocs_for,(abfd, file_cursor), - bfd *abfd AND - unsigned long *file_cursor) -{ - unsigned int nrelocs; - - - - unsigned int idx; - - - - - for (idx = SEG_E0; idx < SEG_E9; idx++) - { - if (segment_info[idx].scnhdr.s_name[0]) - { - - struct external_reloc *ext_ptr; - struct external_reloc *external_reloc_vec; - unsigned int external_reloc_size; - unsigned int count = 0; - unsigned int base = segment_info[idx].scnhdr.s_paddr; - fixS * fix_ptr = segment_info[idx].fix_root; - nrelocs = count_entries_in_chain(idx); - external_reloc_size = nrelocs * RELSZ; - external_reloc_vec = - (struct external_reloc*)malloc(external_reloc_size); - - - - ext_ptr = external_reloc_vec; - - /* Fill in the internal coff style reloc struct from the - internal fix list */ - while (fix_ptr) - { - symbolS *symbol_ptr; - struct internal_reloc intr; - - /* Only output some of the relocations */ - if (TC_COUNT_RELOC(fix_ptr)) - { - symbolS *dot; - symbol_ptr = fix_ptr->fx_addsy; - - intr.r_type = TC_COFF_FIX2RTYPE(fix_ptr); - intr.r_vaddr = base + fix_ptr->fx_frag->fr_address + fix_ptr->fx_where ; - - - /* Turn the segment of the symbol into an offset - */ - dot = - segment_info[S_GET_SEGMENT(symbol_ptr)].dot; - - if (dot) - { - intr.r_symndx = dot->sy_number; - } - else - { - intr.r_symndx = symbol_ptr->sy_number; - } - - - (void)bfd_coff_swap_reloc_out(abfd, &intr, ext_ptr); - ext_ptr++; - -#if defined(TC_A29K) - /* The 29k has a special kludge for the high 16 bit reloc. - Two relocations are emmited, R_IHIHALF, and - R_IHCONST. The second one doesn't contain a symbol, - but uses the value for offset */ - - if (intr.r_type == R_IHIHALF) - { - /* now emit the second bit */ - intr.r_type = R_IHCONST; - intr.r_symndx = fix_ptr->fx_addnumber; - (void)bfd_coff_swap_reloc_out(abfd,&intr,ext_ptr); - ext_ptr++; - } -#endif - } - - fix_ptr = fix_ptr->fx_next; - } - - /* Write out the reloc table */ - segment_info[idx].scnhdr.s_relptr = *file_cursor; - segment_info[idx].scnhdr.s_nreloc = nrelocs; - bfd_write((PTR)external_reloc_vec, 1, external_reloc_size, abfd); - *file_cursor += external_reloc_size; - free( external_reloc_vec); - } - } -} - - -/* run through a frag chain and write out the data to go with it, fill - in the scnhdrs with the info on the file postions -*/ -static void DEFUN(fill_section,(abfd, filehdr, file_cursor), - bfd *abfd AND - struct internal_filehdr *filehdr AND - unsigned long *file_cursor) -{ - - unsigned int i; - unsigned int paddr = 0; - - for (i = SEG_E0; i < SEG_UNKNOWN; i++) - { - unsigned int offset = 0; - - struct internal_scnhdr *s = &( segment_info[i].scnhdr); - - if (s->s_name[0]) - { - fragS *frag = segment_info[i].frchainP->frch_root; - char *buffer = malloc(s->s_size); - s->s_scnptr = *file_cursor; - s->s_paddr = paddr; - s->s_vaddr = paddr; - - s->s_flags = STYP_REG; - if (strcmp(s->s_name,".text")==0) - s->s_flags |= STYP_TEXT; - else if (strcmp(s->s_name,".data")==0) - s->s_flags |= STYP_DATA; - else if (strcmp(s->s_name,".bss")==0) - s->s_flags |= STYP_BSS | STYP_NOLOAD; - - while (frag) { - unsigned int fill_size; - switch (frag->fr_type) { - - case rs_fill: - case rs_align: - case rs_org: - if(frag->fr_fix) - { - memcpy(buffer + frag->fr_address, - frag->fr_literal, - frag->fr_fix); - offset += frag->fr_fix; - } - - fill_size = frag->fr_var; - if (fill_size) - { - unsigned int count ; - unsigned int off = frag->fr_fix; - for (count = frag->fr_offset; count; count--) - { - memcpy(buffer + frag->fr_address + off, - frag->fr_literal + frag->fr_fix, - fill_size); - off += fill_size; - offset += fill_size; - - } - - } - break; - default: - abort(); - } - frag = frag->fr_next; - } - - - bfd_write(buffer, s->s_size,1,abfd); - free(buffer); - - *file_cursor += s->s_size; - paddr += s->s_size; - } - } - -} - - - -/* Coff file generation & utilities */ - - -static void -DEFUN(coff_header_append,(abfd, filehdr, aouthdr), - bfd *abfd AND - struct internal_filehdr *filehdr AND - struct internal_aouthdr *aouthdr) -{ - unsigned int i; - char buffer[1000]; - char buffero[1000]; - - bfd_seek(abfd, 0, 0); -#if 0 - filehdr.f_opthdr = bfd_coff_swap_aouthdr_out(abfd, aouthdr, - buffero); -#else - filehdr->f_opthdr = 0; -#endif - i = bfd_coff_swap_filehdr_out(abfd, filehdr, buffer); - - bfd_write(buffer, i ,1, abfd); - bfd_write(buffero, filehdr->f_opthdr, 1, abfd); - - for (i = SEG_E0; i < SEG_E9; i++) - { - if (segment_info[i].scnhdr.s_name[0]) - { - unsigned int size = - bfd_coff_swap_scnhdr_out(abfd, - &(segment_info[i].scnhdr), - buffer); - bfd_write(buffer, size, 1, abfd); - } - } -} - - -char * -DEFUN(symbol_to_chars,(abfd, where, symbolP), - bfd*abfd AND - char *where AND - symbolS *symbolP) -{ - unsigned int numaux = symbolP->sy_symbol.ost_entry.n_numaux; - unsigned int i; - - /* Turn any symbols with register attributes into abs symbols */ - if (S_GET_SEGMENT(symbolP) == SEG_REGISTER) - { - S_SET_SEGMENT(symbolP, SEG_ABSOLUTE); - } - /* At the same time, relocate all symbols to their output value */ - - S_SET_VALUE(symbolP, - segment_info[S_GET_SEGMENT(symbolP)].scnhdr.s_paddr - + S_GET_VALUE(symbolP)); - - where += bfd_coff_swap_sym_out(abfd, &symbolP->sy_symbol.ost_entry, - where); - - for (i = 0; i < numaux; i++) - { - where += bfd_coff_swap_aux_out(abfd, - &symbolP->sy_symbol.ost_auxent[i], - S_GET_DATA_TYPE(symbolP), - S_GET_STORAGE_CLASS(symbolP), - where); - } - return where; - -} - - - - -void obj_symbol_new_hook(symbolP) -symbolS *symbolP; -{ - char underscore = 0; /* Symbol has leading _ */ - - /* Effective symbol */ - /* Store the pointer in the offset. */ - S_SET_ZEROES(symbolP, 0L); - S_SET_DATA_TYPE(symbolP, T_NULL); - S_SET_STORAGE_CLASS(symbolP, 0); - S_SET_NUMBER_AUXILIARY(symbolP, 0); - /* Additional information */ - symbolP->sy_symbol.ost_flags = 0; - /* Auxiliary entries */ - bzero((char*)&symbolP->sy_symbol.ost_auxent[0], AUXESZ); - -#ifdef STRIP_UNDERSCORE - /* Remove leading underscore at the beginning of the symbol. - * This is to be compatible with the standard librairies. - */ - if (*S_GET_NAME(symbolP) == '_') { - underscore = 1; - S_SET_NAME(symbolP, S_GET_NAME(symbolP) + 1); - } /* strip underscore */ -#endif /* STRIP_UNDERSCORE */ - - if (S_IS_STRING(symbolP)) - SF_SET_STRING(symbolP); - if (!underscore && S_IS_LOCAL(symbolP)) - SF_SET_LOCAL(symbolP); - - return; -} /* obj_symbol_new_hook() */ - - /* stack stuff */ -stack* stack_init(chunk_size, element_size) -unsigned long chunk_size; -unsigned long element_size; -{ - stack* st; - - if ((st = (stack*)malloc(sizeof(stack))) == (stack*)0) - return (stack*)0; - if ((st->data = malloc(chunk_size)) == (char*)0) { - free(st); - return (stack*)0; - } - st->pointer = 0; - st->size = chunk_size; - st->chunk_size = chunk_size; - st->element_size = element_size; - return st; -} /* stack_init() */ - -void stack_delete(st) -stack* st; -{ - free(st->data); - free(st); -} - -char *stack_push(st, element) -stack *st; -char *element; -{ - if (st->pointer + st->element_size >= st->size) { - st->size += st->chunk_size; - if ((st->data = xrealloc(st->data, st->size)) == (char*)0) - return (char*)0; - } - memcpy(st->data + st->pointer, element, st->element_size); - st->pointer += st->element_size; - return st->data + st->pointer; -} /* stack_push() */ - -char* stack_pop(st) -stack* st; -{ - if ((st->pointer -= st->element_size) < 0) { - st->pointer = 0; - return (char*)0; - } - - return st->data + st->pointer; -} - -char* stack_top(st) -stack* st; -{ - return st->data + st->pointer - st->element_size; -} - - -/* - * Handle .ln directives. - */ - -static void obj_coff_ln() { - if (def_symbol_in_progress != NULL) { - as_warn(".ln pseudo-op inside .def/.endef: ignored."); - demand_empty_rest_of_line(); - return; - } /* wrong context */ - - c_line_new(0, - obstack_next_free(&frags) - frag_now->fr_literal, - get_absolute_expression(), - frag_now); - - demand_empty_rest_of_line(); - return; -} /* obj_coff_line() */ - -/* - * def() - * - * Handle .def directives. - * - * One might ask : why can't we symbol_new if the symbol does not - * already exist and fill it with debug information. Because of - * the C_EFCN special symbol. It would clobber the value of the - * function symbol before we have a chance to notice that it is - * a C_EFCN. And a second reason is that the code is more clear this - * way. (at least I think it is :-). - * - */ - -#define SKIP_SEMI_COLON() while (*input_line_pointer++ != ';') -#define SKIP_WHITESPACES() while (*input_line_pointer == ' ' || \ - *input_line_pointer == '\t') \ - input_line_pointer++; - -static void -DEFUN(obj_coff_def,(what), - int what) -{ - char name_end; /* Char after the end of name */ - char *symbol_name; /* Name of the debug symbol */ - char *symbol_name_copy; /* Temporary copy of the name */ - unsigned int symbol_name_length; - /*$char* directiveP;$ */ /* Name of the pseudo opcode */ - /*$char directive[MAX_DIRECTIVE];$ */ /* Backup of the directive */ - /*$char end = 0;$ */ /* If 1, stop parsing */ - - if (def_symbol_in_progress != NULL) { - as_warn(".def pseudo-op used inside of .def/.endef: ignored."); - demand_empty_rest_of_line(); - return; - } /* if not inside .def/.endef */ - - SKIP_WHITESPACES(); - - def_symbol_in_progress = (symbolS *) obstack_alloc(¬es, sizeof(*def_symbol_in_progress)); - bzero(def_symbol_in_progress, sizeof(*def_symbol_in_progress)); - - symbol_name = input_line_pointer; - name_end = get_symbol_end(); - symbol_name_length = strlen(symbol_name); - symbol_name_copy = xmalloc(symbol_name_length + 1); - strcpy(symbol_name_copy, symbol_name); - - /* Initialize the new symbol */ -#ifdef STRIP_UNDERSCORE - S_SET_NAME(def_symbol_in_progress, (*symbol_name_copy == '_' - ? symbol_name_copy + 1 - : symbol_name_copy)); -#else /* STRIP_UNDERSCORE */ - S_SET_NAME(def_symbol_in_progress, symbol_name_copy); -#endif /* STRIP_UNDERSCORE */ - /* free(symbol_name_copy); */ - def_symbol_in_progress->sy_name_offset = ~0; - def_symbol_in_progress->sy_number = ~0; - def_symbol_in_progress->sy_frag = &zero_address_frag; - - if (S_IS_STRING(def_symbol_in_progress)) { - SF_SET_STRING(def_symbol_in_progress); - } /* "long" name */ - - *input_line_pointer = name_end; - - demand_empty_rest_of_line(); - return; -} /* obj_coff_def() */ - -unsigned int dim_index; -static void -DEFUN_VOID(obj_coff_endef) -{ - symbolS *symbolP = 0; - /* DIM BUG FIX sac@cygnus.com */ - dim_index =0; - if (def_symbol_in_progress == NULL) { - as_warn(".endef pseudo-op used outside of .def/.endef: ignored."); - demand_empty_rest_of_line(); - return; - } /* if not inside .def/.endef */ - - /* Set the section number according to storage class. */ - switch (S_GET_STORAGE_CLASS(def_symbol_in_progress)) { - case C_STRTAG: - case C_ENTAG: - case C_UNTAG: - SF_SET_TAG(def_symbol_in_progress); - /* intentional fallthrough */ - case C_FILE: - case C_TPDEF: - SF_SET_DEBUG(def_symbol_in_progress); - S_SET_SEGMENT(def_symbol_in_progress, SEG_DEBUG); - break; - - case C_EFCN: - SF_SET_LOCAL(def_symbol_in_progress); /* Do not emit this symbol. */ - /* intentional fallthrough */ - case C_BLOCK: - SF_SET_PROCESS(def_symbol_in_progress); /* Will need processing before writing */ - /* intentional fallthrough */ - case C_FCN: - S_SET_SEGMENT(def_symbol_in_progress, SEG_E0); - - if (def_symbol_in_progress->sy_symbol.ost_entry.n_name[1] == 'b') { /* .bf */ - if (function_lineoff < 0) { - fprintf(stderr, "`.bf' symbol without preceding function\n"); - } /* missing function symbol */ - SA_GET_SYM_LNNOPTR(def_symbol_in_progress) = function_lineoff; - SF_SET_PROCESS(def_symbol_in_progress); /* Will need relocating */ - function_lineoff = -1; - } - break; - -#ifdef C_AUTOARG - case C_AUTOARG: -#endif /* C_AUTOARG */ - case C_AUTO: - case C_REG: - case C_MOS: - case C_MOE: - case C_MOU: - case C_ARG: - case C_REGPARM: - case C_FIELD: - case C_EOS: - SF_SET_DEBUG(def_symbol_in_progress); - S_SET_SEGMENT(def_symbol_in_progress, SEG_ABSOLUTE); - break; - - case C_EXT: - case C_STAT: - case C_LABEL: - /* Valid but set somewhere else (s_comm, s_lcomm, colon) */ - break; - - case C_USTATIC: - case C_EXTDEF: - case C_ULABEL: - as_warn("unexpected storage class %d", S_GET_STORAGE_CLASS(def_symbol_in_progress)); - break; - } /* switch on storage class */ - - /* Now that we have built a debug symbol, try to - find if we should merge with an existing symbol - or not. If a symbol is C_EFCN or SEG_ABSOLUTE or - untagged SEG_DEBUG it never merges. */ - - /* Two cases for functions. Either debug followed - by definition or definition followed by debug. - For definition first, we will merge the debug - symbol into the definition. For debug first, the - lineno entry MUST point to the definition - function or else it will point off into space - when crawl_symbols() merges the debug - symbol into the real symbol. Therefor, let's - presume the debug symbol is a real function - reference. */ - - /* FIXME-SOON If for some reason the definition - label/symbol is never seen, this will probably - leave an undefined symbol at link time. */ - - if (S_GET_STORAGE_CLASS(def_symbol_in_progress) == C_EFCN - || (S_GET_SEGMENT(def_symbol_in_progress) == SEG_DEBUG - && !SF_GET_TAG(def_symbol_in_progress)) - || S_GET_SEGMENT(def_symbol_in_progress) == SEG_ABSOLUTE - || (symbolP = symbol_find_base(S_GET_NAME(def_symbol_in_progress), DO_NOT_STRIP)) == NULL) { - - symbol_append(def_symbol_in_progress, symbol_lastP, &symbol_rootP, &symbol_lastP); - - } else { - /* This symbol already exists, merge the - newly created symbol into the old one. - This is not mandatory. The linker can - handle duplicate symbols correctly. But I - guess that it save a *lot* of space if - the assembly file defines a lot of - symbols. [loic] */ - - /* The debug entry (def_symbol_in_progress) - is merged into the previous definition. */ - - c_symbol_merge(def_symbol_in_progress, symbolP); - /* FIXME-SOON Should *def_symbol_in_progress be free'd? xoxorich. */ - def_symbol_in_progress = symbolP; - - if (SF_GET_FUNCTION(def_symbol_in_progress) - || SF_GET_TAG(def_symbol_in_progress)) { - /* For functions, and tags, the symbol *must* be where the debug symbol - appears. Move the existing symbol to the current place. */ - /* If it already is at the end of the symbol list, do nothing */ - if (def_symbol_in_progress != symbol_lastP) { - symbol_remove(def_symbol_in_progress, &symbol_rootP, &symbol_lastP); - symbol_append(def_symbol_in_progress, symbol_lastP, &symbol_rootP, &symbol_lastP); - } /* if not already in place */ - } /* if function */ - } /* normal or mergable */ - - if (SF_GET_TAG(def_symbol_in_progress) - && symbol_find_base(S_GET_NAME(def_symbol_in_progress), DO_NOT_STRIP) == NULL) { - tag_insert(S_GET_NAME(def_symbol_in_progress), def_symbol_in_progress); - } /* If symbol is a {structure,union} tag, associate symbol to its name. */ - - if (SF_GET_FUNCTION(def_symbol_in_progress)) { - know(sizeof(def_symbol_in_progress) <= sizeof(long)); - function_lineoff - = c_line_new((long) - def_symbol_in_progress,0, 0, &zero_address_frag); - - - - SF_SET_PROCESS(def_symbol_in_progress); - - if (symbolP == NULL) { - /* That is, if this is the first - time we've seen the function... */ - symbol_table_insert(def_symbol_in_progress); - } /* definition follows debug */ - } /* Create the line number entry pointing to the function being defined */ - - def_symbol_in_progress = NULL; - demand_empty_rest_of_line(); - return; -} /* obj_coff_endef() */ - -static void -DEFUN_VOID(obj_coff_dim) -{ - register int dim_index; - - if (def_symbol_in_progress == NULL) - { - as_warn(".dim pseudo-op used outside of .def/.endef: ignored."); - demand_empty_rest_of_line(); - return; - } /* if not inside .def/.endef */ - - S_SET_NUMBER_AUXILIARY(def_symbol_in_progress, 1); - - for (dim_index = 0; dim_index < DIMNUM; dim_index++) - { - SKIP_WHITESPACES(); - SA_SET_SYM_DIMEN(def_symbol_in_progress, dim_index, get_absolute_expression()); - - switch (*input_line_pointer) - { - - case ',': - input_line_pointer++; - break; - - default: - as_warn("badly formed .dim directive ignored"); - /* intentional fallthrough */ - case '\n': - case ';': - dim_index = DIMNUM; - break; - } /* switch on following character */ - } /* for each dimension */ - - demand_empty_rest_of_line(); - return; -} /* obj_coff_dim() */ - -static void obj_coff_line() { - if (def_symbol_in_progress == NULL) { - obj_coff_ln(); - return; - } /* if it looks like a stabs style line */ - - S_SET_NUMBER_AUXILIARY(def_symbol_in_progress, 1); - SA_SET_SYM_LNNO(def_symbol_in_progress, get_absolute_expression()); - - demand_empty_rest_of_line(); - return; -} /* obj_coff_line() */ - -static void obj_coff_size() { - if (def_symbol_in_progress == NULL) { - as_warn(".size pseudo-op used outside of .def/.endef ignored."); - demand_empty_rest_of_line(); - return; - } /* if not inside .def/.endef */ - - S_SET_NUMBER_AUXILIARY(def_symbol_in_progress, 1); - SA_SET_SYM_SIZE(def_symbol_in_progress, get_absolute_expression()); - demand_empty_rest_of_line(); - return; -} /* obj_coff_size() */ - -static void obj_coff_scl() { - if (def_symbol_in_progress == NULL) { - as_warn(".scl pseudo-op used outside of .def/.endef ignored."); - demand_empty_rest_of_line(); - return; - } /* if not inside .def/.endef */ - - S_SET_STORAGE_CLASS(def_symbol_in_progress, get_absolute_expression()); - demand_empty_rest_of_line(); - return; -} /* obj_coff_scl() */ - -static void obj_coff_tag() { - char *symbol_name; - char name_end; - - if (def_symbol_in_progress == NULL) { - as_warn(".tag pseudo-op used outside of .def/.endef ignored."); - demand_empty_rest_of_line(); - return; - } /* if not inside .def/.endef */ - - S_SET_NUMBER_AUXILIARY(def_symbol_in_progress, 1); - symbol_name = input_line_pointer; - name_end = get_symbol_end(); - - /* Assume that the symbol referred to by .tag is always defined. */ - /* This was a bad assumption. I've added find_or_make. xoxorich. */ - SA_SET_SYM_TAGNDX(def_symbol_in_progress, (long) tag_find_or_make(symbol_name)); - if (SA_GET_SYM_TAGNDX(def_symbol_in_progress) == 0L) { - as_warn("tag not found for .tag %s", symbol_name); - } /* not defined */ - - SF_SET_TAGGED(def_symbol_in_progress); - *input_line_pointer = name_end; - - demand_empty_rest_of_line(); - return; -} /* obj_coff_tag() */ - -static void obj_coff_type() { - if (def_symbol_in_progress == NULL) { - as_warn(".type pseudo-op used outside of .def/.endef ignored."); - demand_empty_rest_of_line(); - return; - } /* if not inside .def/.endef */ - - S_SET_DATA_TYPE(def_symbol_in_progress, get_absolute_expression()); - - if (ISFCN(S_GET_DATA_TYPE(def_symbol_in_progress)) && - S_GET_STORAGE_CLASS(def_symbol_in_progress) != C_TPDEF) { - SF_SET_FUNCTION(def_symbol_in_progress); - } /* is a function */ - - demand_empty_rest_of_line(); - return; -} /* obj_coff_type() */ - -static void obj_coff_val() { - if (def_symbol_in_progress == NULL) { - as_warn(".val pseudo-op used outside of .def/.endef ignored."); - demand_empty_rest_of_line(); - return; - } /* if not inside .def/.endef */ - - if (is_name_beginner(*input_line_pointer)) { - char *symbol_name = input_line_pointer; - char name_end = get_symbol_end(); - - if (!strcmp(symbol_name, ".")) { - def_symbol_in_progress->sy_frag = frag_now; - S_SET_VALUE(def_symbol_in_progress, obstack_next_free(&frags) - frag_now->fr_literal); - /* If the .val is != from the .def (e.g. statics) */ - } else if (strcmp(S_GET_NAME(def_symbol_in_progress), symbol_name)) { - def_symbol_in_progress->sy_forward = symbol_find_or_make(symbol_name); - - /* If the segment is undefined when the forward - reference is solved, then copy the segment id - from the forward symbol. */ - SF_SET_GET_SEGMENT(def_symbol_in_progress); - } - /* Otherwise, it is the name of a non debug symbol and its value will be calculated later. */ - *input_line_pointer = name_end; - } else { - S_SET_VALUE(def_symbol_in_progress, get_absolute_expression()); - } /* if symbol based */ - - demand_empty_rest_of_line(); - return; -} /* obj_coff_val() */ - -/* - * Maintain a list of the tagnames of the structres. - */ - -static void tag_init() { - tag_hash = hash_new(); - return ; -} /* tag_init() */ - -static void tag_insert(name, symbolP) -char *name; -symbolS *symbolP; -{ - register char * error_string; - - if (*(error_string = hash_jam(tag_hash, name, (char *)symbolP))) { - as_fatal("Inserting \"%s\" into structure table failed: %s", - name, error_string); - } - return ; -} /* tag_insert() */ - -static symbolS *tag_find_or_make(name) -char *name; -{ - symbolS *symbolP; - - if ((symbolP = tag_find(name)) == NULL) { - symbolP = symbol_new(name, - SEG_UNKNOWN, - 0, - &zero_address_frag); - - tag_insert(S_GET_NAME(symbolP), symbolP); - symbol_table_insert(symbolP); - } /* not found */ - - return(symbolP); -} /* tag_find_or_make() */ - -static symbolS *tag_find(name) -char *name; -{ -#ifdef STRIP_UNDERSCORE - if (*name == '_') name++; -#endif /* STRIP_UNDERSCORE */ - return((symbolS*)hash_find(tag_hash, name)); -} /* tag_find() */ - -void obj_read_begin_hook() { - /* These had better be the same. Usually 18 bytes. */ -#ifndef BFD_HEADERS - know(sizeof(SYMENT) == sizeof(AUXENT)); - know(SYMESZ == AUXESZ); -#endif - tag_init(); - - return; -} /* obj_read_begin_hook() */ - -/* This function runs through the symbol table and puts all the - externals onto another chain */ - -/* The chain of externals */ -symbolS *symbol_externP = NULL; -symbolS *symbol_extern_lastP = NULL; - -stack*block_stack; - symbolS *last_functionP = NULL; - symbolS *last_tagP; - - -static unsigned int DEFUN_VOID(yank_symbols) -{ - symbolS *symbolP; - unsigned int symbol_number =0; - - for (symbolP = symbol_rootP; - symbolP; - symbolP = symbolP ? symbol_next(symbolP) : symbol_rootP) { - if (!SF_GET_DEBUG(symbolP)) { - /* Debug symbols do not need all this rubbish */ - symbolS* real_symbolP; - - /* L* and C_EFCN symbols never merge. */ - if (!SF_GET_LOCAL(symbolP) - && (real_symbolP = symbol_find_base(S_GET_NAME(symbolP), DO_NOT_STRIP)) - && real_symbolP != symbolP) { - /* FIXME-SOON: where do dups come from? - Maybe tag references before definitions? xoxorich. */ - /* Move the debug data from the debug symbol to the - real symbol. Do NOT do the oposite (i.e. move from - real symbol to debug symbol and remove real symbol from the - list.) Because some pointers refer to the real symbol - whereas no pointers refer to the debug symbol. */ - c_symbol_merge(symbolP, real_symbolP); - /* Replace the current symbol by the real one */ - /* The symbols will never be the last or the first - because : 1st symbol is .file and 3 last symbols are - .text, .data, .bss */ - symbol_remove(real_symbolP, &symbol_rootP, &symbol_lastP); - symbol_insert(real_symbolP, symbolP, &symbol_rootP, &symbol_lastP); - symbol_remove(symbolP, &symbol_rootP, &symbol_lastP); - symbolP = real_symbolP; - } /* if not local but dup'd */ - - if (flagseen['R'] && (S_GET_SEGMENT(symbolP) == SEG_E1)) { - S_SET_SEGMENT(symbolP, SEG_E0); - } /* push data into text */ - - S_SET_VALUE(symbolP, - S_GET_VALUE(symbolP) + symbolP->sy_frag->fr_address); - - if (!S_IS_DEFINED(symbolP) && !SF_GET_LOCAL(symbolP)) - { - S_SET_EXTERNAL(symbolP); - } - else if (S_GET_STORAGE_CLASS(symbolP) == C_NULL) - { - if (S_GET_SEGMENT(symbolP) == SEG_E0) - { - S_SET_STORAGE_CLASS(symbolP, C_LABEL); - } - else - { - S_SET_STORAGE_CLASS(symbolP, C_STAT); - } - } - - /* Mainly to speed up if not -g */ - if (SF_GET_PROCESS(symbolP)) - { - /* Handle the nested blocks auxiliary info. */ - if (S_GET_STORAGE_CLASS(symbolP) == C_BLOCK) { - if (!strcmp(S_GET_NAME(symbolP), ".bb")) - stack_push(block_stack, (char *) &symbolP); - else { /* .eb */ - register symbolS* begin_symbolP; - begin_symbolP = *(symbolS**)stack_pop(block_stack); - if (begin_symbolP == (symbolS*)0) - as_warn("mismatched .eb"); - else - SA_SET_SYM_ENDNDX(begin_symbolP, symbol_number+2); - } - } - /* If we are able to identify the type of a function, and we - are out of a function (last_functionP == 0) then, the - function symbol will be associated with an auxiliary - entry. */ - if (last_functionP == (symbolS*)0 && - SF_GET_FUNCTION(symbolP)) { - last_functionP = symbolP; - - if (S_GET_NUMBER_AUXILIARY(symbolP) < 1) { - S_SET_NUMBER_AUXILIARY(symbolP, 1); - } /* make it at least 1 */ - - /* Clobber possible stale .dim information. */ - bzero(symbolP->sy_symbol.ost_auxent[0].x_sym.x_fcnary.x_ary.x_dimen, - sizeof(symbolP->sy_symbol.ost_auxent[0].x_sym.x_fcnary.x_ary.x_dimen)); - } - /* The C_FCN doesn't need any additional information. - I don't even know if this is needed for sdb. But the - standard assembler generates it, so... - */ - if (S_GET_STORAGE_CLASS(symbolP) == C_EFCN) { - if (last_functionP == (symbolS*)0) - as_fatal("C_EFCN symbol out of scope"); - SA_SET_SYM_FSIZE(last_functionP, - (long)(S_GET_VALUE(symbolP) - - S_GET_VALUE(last_functionP))); - SA_SET_SYM_ENDNDX(last_functionP, symbol_number); - last_functionP = (symbolS*)0; - } - } - } else if (SF_GET_TAG(symbolP)) { - /* First descriptor of a structure must point to - the first slot after the structure description. */ - last_tagP = symbolP; - - } else if (S_GET_STORAGE_CLASS(symbolP) == C_EOS) { - /* +2 take in account the current symbol */ - SA_SET_SYM_ENDNDX(last_tagP, symbol_number + 2); - } else if (S_GET_STORAGE_CLASS(symbolP) == C_FILE) { - if (S_GET_VALUE(symbolP)) { - S_SET_VALUE((symbolS *) S_GET_VALUE(symbolP), symbol_number); - S_SET_VALUE(symbolP, 0); - } /* no one points at the first .file symbol */ - } /* if debug or tag or eos or file */ - - /* We must put the external symbols apart. The loader - does not bomb if we do not. But the references in - the endndx field for a .bb symbol are not corrected - if an external symbol is removed between .bb and .be. - I.e in the following case : - [20] .bb endndx = 22 - [21] foo external - [22] .be - ld will move the symbol 21 to the end of the list but - endndx will still be 22 instead of 21. */ - - - if (SF_GET_LOCAL(symbolP)) { - /* remove C_EFCN and LOCAL (L...) symbols */ - /* next pointer remains valid */ - symbol_remove(symbolP, &symbol_rootP, &symbol_lastP); - - } - else if (!S_IS_DEFINED(symbolP) - && !S_IS_DEBUG(symbolP) - && !SF_GET_STATICS(symbolP) && - S_GET_STORAGE_CLASS(symbolP) == C_EXT) - { /* C_EXT && !SF_GET_FUNCTION(symbolP)) */ - /* if external, Remove from the list */ - symbolS *hold = symbol_previous(symbolP); - - symbol_remove(symbolP, &symbol_rootP, &symbol_lastP); - symbol_clear_list_pointers(symbolP); - symbol_append(symbolP, symbol_extern_lastP, &symbol_externP, &symbol_extern_lastP); - symbolP = hold; - } else { - if (SF_GET_STRING(symbolP)) { - symbolP->sy_name_offset = string_byte_count; - string_byte_count += strlen(S_GET_NAME(symbolP)) + 1; - } else { - symbolP->sy_name_offset = 0; - } /* fix "long" names */ - - symbolP->sy_number = symbol_number; - symbol_number += 1 + S_GET_NUMBER_AUXILIARY(symbolP); - } /* if local symbol */ - } /* traverse the symbol list */ - return symbol_number; - -} - - -static unsigned int DEFUN_VOID(glue_symbols) -{ - unsigned int symbol_number = 0; - symbolS *symbolP; - for (symbolP = symbol_externP; symbol_externP;) { - symbolS *tmp = symbol_externP; - - /* append */ - symbol_remove(tmp, &symbol_externP, &symbol_extern_lastP); - symbol_append(tmp, symbol_lastP, &symbol_rootP, &symbol_lastP); - - /* and process */ - if (SF_GET_STRING(tmp)) { - tmp->sy_name_offset = string_byte_count; - string_byte_count += strlen(S_GET_NAME(tmp)) + 1; - } else { - tmp->sy_name_offset = 0; - } /* fix "long" names */ - - tmp->sy_number = symbol_number; - symbol_number += 1 + S_GET_NUMBER_AUXILIARY(tmp); - } /* append the entire extern chain */ - return symbol_number; - -} - -static unsigned int DEFUN_VOID(tie_tags) -{ - unsigned int symbol_number = 0; - - symbolS*symbolP; - for (symbolP = symbol_rootP; symbolP; symbolP = - symbol_next(symbolP)) - { - symbolP->sy_number = symbol_number; - - - - if (SF_GET_TAGGED(symbolP)) - { - SA_SET_SYM_TAGNDX - (symbolP, - ((symbolS*) SA_GET_SYM_TAGNDX(symbolP))->sy_number); - } - - symbol_number += 1 + S_GET_NUMBER_AUXILIARY(symbolP); - } - return symbol_number; - -} - -static void -DEFUN(crawl_symbols,(headers, abfd), - struct internal_filehdr *headers AND - bfd *abfd) -{ - - unsigned int i; - unsigned int ptr = 0; - - - symbolS *symbolP; - - /* Initialize the stack used to keep track of the matching .bb .be */ - - block_stack = stack_init(512, sizeof(symbolS*)); - /* JF deal with forward references first... */ - for (symbolP = symbol_rootP; - symbolP; - symbolP = symbol_next(symbolP)) - { - - if (symbolP->sy_forward) { - S_SET_VALUE(symbolP, (S_GET_VALUE(symbolP) - + S_GET_VALUE(symbolP->sy_forward) - + symbolP->sy_forward->sy_frag->fr_address)); - - if (SF_GET_GET_SEGMENT(symbolP)) { - S_SET_SEGMENT(symbolP, S_GET_SEGMENT(symbolP->sy_forward)); - } /* forward segment also */ - - symbolP->sy_forward=0; - } /* if it has a forward reference */ - } /* walk the symbol chain */ - - - /* The symbol list should be ordered according to the following sequence - * order : - * . .file symbol - * . debug entries for functions - * . fake symbols for the sections, including.text .data and .bss - * . defined symbols - * . undefined symbols - * But this is not mandatory. The only important point is to put the - * undefined symbols at the end of the list. - */ - - if (symbol_rootP == NULL - || S_GET_STORAGE_CLASS(symbol_rootP) != C_FILE) { - c_dot_file_symbol("fake"); - } - /* Is there a .file symbol ? If not insert one at the beginning. */ - - /* - * Build up static symbols for the sections, they are filled in later - */ - - - for (i = SEG_E0; i < SEG_E9; i++) - { - if (segment_info[i].scnhdr.s_name[0]) - { - segment_info[i].dot = - c_section_symbol(segment_info[i].scnhdr.s_name, - i-SEG_E0+1); - - } - } - - - /* Take all the externals out and put them into another chain */ - headers->f_nsyms = yank_symbols(); - /* Take the externals and glue them onto the end.*/ - headers->f_nsyms += glue_symbols(); - - headers->f_nsyms = tie_tags(); - know(symbol_externP == NULL); - know(symbol_extern_lastP == NULL); - - return; -} - -/* - * Find strings by crawling along symbol table chain. - */ - -void DEFUN(w_strings,(where), - char *where) -{ - symbolS *symbolP; - - /* Gotta do md_ byte-ordering stuff for string_byte_count first - KWK */ - md_number_to_chars(where, string_byte_count, sizeof(string_byte_count)); - where += sizeof(string_byte_count); - for (symbolP = symbol_rootP; - symbolP; - symbolP = symbol_next(symbolP)) - { - unsigned int size; - - if (SF_GET_STRING(symbolP)) { - size = strlen(S_GET_NAME(symbolP)) + 1; - - memcpy(where, S_GET_NAME(symbolP),size); - where += size; - - } - } - -} - - - - - -static void -DEFUN(do_linenos_for,(abfd, file_cursor), - bfd *abfd AND - unsigned long *file_cursor) -{ - unsigned int idx; - - for (idx = SEG_E0; idx < SEG_E9; idx++) - { - segment_info_type *s = segment_info + idx; - - if (s->scnhdr.s_nlnno != 0) - { - struct lineno_list *line_ptr ; - - struct external_lineno *buffer = - (struct external_lineno *)xmalloc(s->scnhdr.s_nlnno * LINESZ); - - struct external_lineno *dst= buffer; - - /* Run through the table we've built and turn it into its external - form */ - - for (line_ptr = s->lineno_list_head; - line_ptr != (struct lineno_list *)NULL; - line_ptr = line_ptr->next) - { - if (line_ptr->line.l_lnno == 0) - { - /* Turn a pointer to a symbol into the symbols' index */ - line_ptr->line.l_addr.l_symndx = - ( (symbolS *)line_ptr->line.l_addr.l_symndx)->sy_number; - } - (void) bfd_coff_swap_lineno_out(abfd, &(line_ptr->line), dst); - dst++; - } - - s->scnhdr.s_lnnoptr = *file_cursor; - - bfd_write(buffer, 1, s->scnhdr.s_nlnno* LINESZ, abfd); - free(buffer); - - *file_cursor += s->scnhdr.s_nlnno * LINESZ; - } - } -} - - -/* Now we run through the list of frag chains in a segment and - make all the subsegment frags appear at the end of the - list, as if the seg 0 was extra long */ - -static void DEFUN_VOID(remove_subsegs) -{ - unsigned int i; - - for (i = SEG_E0; i < SEG_UNKNOWN; i++) - { - frchainS *head = segment_info[i].frchainP; - fragS dummy; - fragS * prev_frag = &dummy; - - while (head && head->frch_seg == i) - { - prev_frag->fr_next = head->frch_root; - prev_frag = head->frch_last; - head = head->frch_next; - } - prev_frag->fr_next = 0; - } -} - - -extern void DEFUN_VOID(write_object_file) -{ - int i; - struct frchain *frchain_ptr; - - struct internal_filehdr filehdr; - struct internal_aouthdr aouthdr; - unsigned long file_cursor; - bfd *abfd; - unsigned int addr = 0; - abfd = bfd_openw(out_file_name, TARGET_FORMAT); - - - if (abfd == 0) { - as_perror ("FATAL: Can't create %s", out_file_name); - exit(42); - } - bfd_set_format(abfd, bfd_object); - bfd_set_arch_mach(abfd, BFD_ARCH, 0); - - - - string_byte_count = 4; - - for (frchain_ptr = frchain_root; - frchain_ptr != (struct frchain *)NULL; - frchain_ptr = frchain_ptr->frch_next) { - /* Run through all the sub-segments and align them up. Also close any - open frags. We tack a .fill onto the end of the frag chain so - that any .align's size can be worked by looking at the next - frag */ - - subseg_new(frchain_ptr->frch_seg, frchain_ptr->frch_subseg); -#define SUB_SEGMENT_ALIGN 1 - frag_align(SUB_SEGMENT_ALIGN,0); - frag_wane(frag_now); - frag_now->fr_fix = 0; - know( frag_now->fr_next == NULL ); - } - - - remove_subsegs(); - - - for (i = SEG_E0; i < SEG_UNKNOWN; i++) - { - relax_segment(segment_info[i].frchainP->frch_root, i); - } - - - - - - filehdr.f_nscns = 0; - - /* Find out how big the sections are */ - for (i = SEG_E0; i < SEG_UNKNOWN; i++) - { - - if (segment_info[i].scnhdr.s_name[0]) - { - filehdr.f_nscns++; - } - segment_info[i].scnhdr.s_paddr = addr; - if (i == SEG_E2) { - /* THis is a special case, we leave the size alone, which will have */ - /* been made up from all and any lcomms seen */ - } - else { - addr += size_section(abfd, i); - } - } - - - - /* Turn the gas native symbol table shape into a coff symbol table */ - crawl_symbols(&filehdr, abfd); - - for (i = SEG_E0; i < SEG_UNKNOWN; i++) - { - fixup_segment(segment_info[i].fix_root, i); - } - - file_cursor = FILHSZ + SCNHSZ * filehdr.f_nscns ; - - bfd_seek(abfd, file_cursor, 0); - - - do_relocs_for(abfd, &file_cursor); - - do_linenos_for(abfd, &file_cursor); - - - /* Plant the data */ - - fill_section(abfd,&filehdr, &file_cursor); - - filehdr.f_magic = COFF_MAGIC; - filehdr.f_timdat = 0; - filehdr.f_flags = 0; - - - - { - - unsigned int symtable_size = filehdr.f_nsyms * SYMESZ; - char *buffer1 = malloc(symtable_size + string_byte_count + 4); - char *ptr = buffer1; - filehdr.f_symptr = bfd_tell(abfd); - w_symbols(abfd, buffer1, symbol_rootP); - w_strings(buffer1 + symtable_size); - bfd_write(buffer1, 1,symtable_size + string_byte_count + 4, abfd); - free(buffer1); - - } - coff_header_append(abfd, &filehdr, &aouthdr); - - bfd_close_all_done(abfd); -} - - -static void DEFUN(change_to_section,(name, len, exp), - char *name AND - unsigned int len AND - unsigned int exp) -{ - unsigned int i; - /* Find out if we've already got a section of this name etc */ - for(i = SEG_E0; i < SEG_E9 && segment_info[i].scnhdr.s_name[0] ; i++) - { - if (strncmp(segment_info[i].scnhdr.s_name, name, len) == 0) - { - subseg_new(i, exp); - return; - - } - } - /* No section, add one */ - strncpy(segment_info[i].scnhdr.s_name, name, 8); - subseg_new(i, exp); -} - -static void -DEFUN_VOID(obj_coff_section) -{ - /* Strip out the section name */ - char *section_name ; - char *section_name_end; - char c; - - unsigned int len; - unsigned int exp; - - section_name = input_line_pointer; - c = get_symbol_end(); - section_name_end = input_line_pointer; - - len = section_name_end - section_name ; - input_line_pointer++; - SKIP_WHITESPACE(); - if (c == ',') - { - exp = get_absolute_expression(); - } - else if ( *input_line_pointer == ',') - { - - input_line_pointer++; - exp = get_absolute_expression(); - } - else - { - exp = 0; - } - - change_to_section(section_name, len,exp); - -} - - -static void obj_coff_text() -{ - change_to_section(".text",5, get_absolute_expression()); -} - - -static void obj_coff_data() -{ - change_to_section(".data",5, get_absolute_expression()); -} - -void c_symbol_merge(debug, normal) -symbolS *debug; -symbolS *normal; -{ - S_SET_DATA_TYPE(normal, S_GET_DATA_TYPE(debug)); - S_SET_STORAGE_CLASS(normal, S_GET_STORAGE_CLASS(debug)); - - if (S_GET_NUMBER_AUXILIARY(debug) > S_GET_NUMBER_AUXILIARY(normal)) { - S_SET_NUMBER_AUXILIARY(normal, S_GET_NUMBER_AUXILIARY(debug)); - } /* take the most we have */ - - if (S_GET_NUMBER_AUXILIARY(debug) > 0) { - memcpy((char*)&normal->sy_symbol.ost_auxent[0], (char*)&debug->sy_symbol.ost_auxent[0], S_GET_NUMBER_AUXILIARY(debug) * AUXESZ); - } /* Move all the auxiliary information */ - - /* Move the debug flags. */ - SF_SET_DEBUG_FIELD(normal, SF_GET_DEBUG_FIELD(debug)); -} /* c_symbol_merge() */ - -static int -DEFUN(c_line_new,(symbol, paddr, line_number, frag), - symbolS *symbol AND - long paddr AND - unsigned short line_number AND - fragS* frag) -{ - struct lineno_list* new_line = - (struct lineno_list *)xmalloc(sizeof(struct lineno_list)); - - segment_info_type *s = segment_info + now_seg; - new_line->line.l_lnno = line_number; - if (line_number == 0) - { - new_line->line.l_addr.l_symndx = (long)symbol; - } - else - { - new_line->line.l_addr.l_paddr = paddr; - } - - new_line->frag = (char*)frag; - new_line->next = (struct lineno_list*)NULL; - - - if (s->lineno_list_head == (struct lineno_list *)NULL) - { - s->lineno_list_head = new_line; - } - else - { - s->lineno_list_tail->next = new_line; - } - s->lineno_list_tail = new_line; - return LINESZ * s->scnhdr.s_nlnno ++; -} - -void c_dot_file_symbol(filename) -char *filename; -{ - symbolS* symbolP; - - symbolP = symbol_new(".file", - SEG_DEBUG, - 0, - &zero_address_frag); - - S_SET_STORAGE_CLASS(symbolP, C_FILE); - S_SET_NUMBER_AUXILIARY(symbolP, 1); - SA_SET_FILE_FNAME(symbolP, filename); - SF_SET_DEBUG(symbolP); - S_SET_VALUE(symbolP, (long) previous_file_symbol); - - previous_file_symbol = symbolP; - - /* Make sure that the symbol is first on the symbol chain */ - if (symbol_rootP != symbolP) { - if (symbolP == symbol_lastP) { - symbol_lastP = symbol_lastP->sy_previous; - } /* if it was the last thing on the list */ - - symbol_remove(symbolP, &symbol_rootP, &symbol_lastP); - symbol_insert(symbolP, symbol_rootP, &symbol_rootP, &symbol_lastP); - symbol_rootP = symbolP; - } /* if not first on the list */ - -} /* c_dot_file_symbol() */ - -/* - * Build a 'section static' symbol. - */ - -symbolS *c_section_symbol(name,idx) -char *name; -int idx; -{ - symbolS *symbolP; - - symbolP = symbol_new(name,idx, - 0, - &zero_address_frag); - - S_SET_STORAGE_CLASS(symbolP, C_STAT); - S_SET_NUMBER_AUXILIARY(symbolP, 1); - - SF_SET_STATICS(symbolP); - - return symbolP; -} /* c_section_symbol() */ - -static void -DEFUN(w_symbols,(abfd, where, symbol_rootP), -bfd *abfd AND -char *where AND -symbolS *symbol_rootP) -{ - symbolS *symbolP; - unsigned int i; - - /* First fill in those values we have only just worked out */ - for (i = SEG_E0; i < SEG_E9; i++) - { - symbolP = segment_info[i].dot; - if (symbolP) - { - - SA_SET_SCN_SCNLEN(symbolP, segment_info[i].scnhdr.s_size); - SA_SET_SCN_NRELOC(symbolP, segment_info[i].scnhdr.s_nreloc); - SA_SET_SCN_NLINNO(symbolP, segment_info[i].scnhdr.s_nlnno); - - } - } - - /* - * Emit all symbols left in the symbol chain. - */ - for (symbolP = symbol_rootP; symbolP; symbolP = symbol_next(symbolP)) { - /* Used to save the offset of the name. It is used to point - to the string in memory but must be a file offset. */ - register char * temp; - - tc_coff_symbol_emit_hook(symbolP); - - temp = S_GET_NAME(symbolP); - if (SF_GET_STRING(symbolP)) { - S_SET_OFFSET(symbolP, symbolP->sy_name_offset); - S_SET_ZEROES(symbolP, 0); - } else { - bzero(symbolP->sy_symbol.ost_entry.n_name, SYMNMLEN); - strncpy(symbolP->sy_symbol.ost_entry.n_name, temp, SYMNMLEN); - } - where = symbol_to_chars(abfd, where, symbolP); - S_SET_NAME(symbolP,temp); - } - -} /* w_symbols() */ - -static void DEFUN_VOID(obj_coff_lcomm) -{ - char *name; - char c; - int temp; - char *p; - symbolS *symbolP; - name = input_line_pointer; - - - - c = get_symbol_end(); - p = input_line_pointer; - *p = c; - SKIP_WHITESPACE(); - if (*input_line_pointer != ',') { - as_bad("Expected comma after name"); - ignore_rest_of_line(); - return; - } - if (*input_line_pointer == '\n') { - as_bad("Missing size expression"); - return; - } - input_line_pointer++; - if ((temp = get_absolute_expression ()) < 0) { - as_warn("lcomm length (%d.) <0! Ignored.", temp); - ignore_rest_of_line(); - return; - } - *p = 0; - symbolP = symbol_find_or_make(name); - S_SET_VALUE(symbolP, segment_info[SEG_E2].scnhdr.s_size); - S_SET_SEGMENT(symbolP, SEG_E2); - segment_info[SEG_E2].scnhdr.s_size += temp; - S_SET_STORAGE_CLASS(symbolP, C_STAT); - demand_empty_rest_of_line(); -} - - -#if 1 -static void DEFUN(fixup_segment,(fixP, this_segment_type), -register fixS * fixP AND -segT this_segment_type) -{ - register symbolS *add_symbolP; - register symbolS *sub_symbolP; - register long add_number; - register int size; - register char *place; - register long where; - register char pcrel; - register fragS *fragP; - register segT add_symbol_segment = SEG_ABSOLUTE; - - - for ( ; fixP; fixP = fixP->fx_next) - { - fragP = fixP->fx_frag; - know(fragP); - where = fixP->fx_where; - place = fragP->fr_literal + where; - size = fixP->fx_size; - add_symbolP = fixP->fx_addsy; -#ifdef TC_I960 - if (fixP->fx_callj && TC_S_IS_CALLNAME(add_symbolP)) { - /* Relocation should be done via the - associated 'bal' entry point - symbol. */ - - if (!TC_S_IS_BALNAME(tc_get_bal_of_call(add_symbolP))) { - as_bad("No 'bal' entry point for leafproc %s", - S_GET_NAME(add_symbolP)); - continue; - } - fixP->fx_addsy = add_symbolP = tc_get_bal_of_call(add_symbolP); - } /* callj relocation */ -#endif - sub_symbolP = fixP->fx_subsy; - add_number = fixP->fx_offset; - pcrel = fixP->fx_pcrel; - - if (add_symbolP) { - add_symbol_segment = S_GET_SEGMENT(add_symbolP); - } /* if there is an addend */ - - if (sub_symbolP) { - if (!add_symbolP) { - /* Its just -sym */ - if (S_GET_SEGMENT(sub_symbolP) != SEG_ABSOLUTE) { - as_bad("Negative of non-absolute symbol %s", S_GET_NAME(sub_symbolP)); - } /* not absolute */ - - add_number -= S_GET_VALUE(sub_symbolP); - - /* if sub_symbol is in the same segment that add_symbol - and add_symbol is either in DATA, TEXT, BSS or ABSOLUTE */ - } else if ((S_GET_SEGMENT(sub_symbolP) == add_symbol_segment) - && (SEG_NORMAL(add_symbol_segment) - || (add_symbol_segment == SEG_ABSOLUTE))) { - /* Difference of 2 symbols from same segment. */ - /* Can't make difference of 2 undefineds: 'value' means */ - /* something different for N_UNDF. */ -#ifdef TC_I960 - /* Makes no sense to use the difference of 2 arbitrary symbols - * as the target of a call instruction. - */ - if (fixP->fx_callj) { - as_bad("callj to difference of 2 symbols"); - } -#endif /* TC_I960 */ - add_number += S_GET_VALUE(add_symbolP) - - S_GET_VALUE(sub_symbolP); - - add_symbolP = NULL; - fixP->fx_addsy = NULL; - } else { - /* Different segments in subtraction. */ - know(!(S_IS_EXTERNAL(sub_symbolP) && (S_GET_SEGMENT(sub_symbolP) == SEG_ABSOLUTE))); - - if ((S_GET_SEGMENT(sub_symbolP) == SEG_ABSOLUTE)) { - add_number -= S_GET_VALUE(sub_symbolP); - } else { - as_bad("Can't emit reloc {- %s-seg symbol \"%s\"} @ file address %d.", - segment_name(S_GET_SEGMENT(sub_symbolP)), - S_GET_NAME(sub_symbolP), fragP->fr_address + where); - } /* if absolute */ - } - } /* if sub_symbolP */ - - if (add_symbolP) { - if (add_symbol_segment == this_segment_type && pcrel) { - /* - * This fixup was made when the symbol's segment was - * SEG_UNKNOWN, but it is now in the local segment. - * So we know how to do the address without relocation. - */ -#ifdef TC_I960 - /* reloc_callj() may replace a 'call' with a 'calls' or a 'bal', - * in which cases it modifies *fixP as appropriate. In the case - * of a 'calls', no further work is required, and *fixP has been - * set up to make the rest of the code below a no-op. - */ - reloc_callj(fixP); -#endif /* TC_I960 */ - - add_number += S_GET_VALUE(add_symbolP); - add_number -= md_pcrel_from (fixP); - pcrel = 0; /* Lie. Don't want further pcrel processing. */ - fixP->fx_addsy = NULL; /* No relocations please. */ - } else - { - switch (add_symbol_segment) - { - case SEG_ABSOLUTE: -#ifdef TC_I960 - reloc_callj(fixP); /* See comment about reloc_callj() above*/ -#endif /* TC_I960 */ - add_number += S_GET_VALUE(add_symbolP); - fixP->fx_addsy = NULL; - add_symbolP = NULL; - break; - default: - - add_number += S_GET_VALUE(add_symbolP) + - segment_info[S_GET_SEGMENT(add_symbolP)].scnhdr.s_paddr ; - break; - - case SEG_UNKNOWN: -#ifdef TC_I960 - if ((int)fixP->fx_bit_fixP == 13) { - /* This is a COBR instruction. They have only a - * 13-bit displacement and are only to be used - * for local branches: flag as error, don't generate - * relocation. - */ - as_bad("can't use COBR format with external label"); - fixP->fx_addsy = NULL; /* No relocations please. */ - continue; - } /* COBR */ -#endif /* TC_I960 */ - - - - break; - - - } /* switch on symbol seg */ - } /* if not in local seg */ - } /* if there was a + symbol */ - - if (pcrel) { - add_number -= md_pcrel_from(fixP); - if (add_symbolP == 0) { - fixP->fx_addsy = & abs_symbol; - } /* if there's an add_symbol */ - } /* if pcrel */ - - if (!fixP->fx_bit_fixP) { - if ((size==1 && - (add_number& ~0xFF) && (add_number&~0xFF!=(-1&~0xFF))) || - (size==2 && - (add_number& ~0xFFFF) && (add_number&~0xFFFF!=(-1&~0xFFFF)))) { - as_bad("Value of %d too large for field of %d bytes at 0x%x", - add_number, size, fragP->fr_address + where); - } /* generic error checking */ - } /* not a bit fix */ - /* once this fix has been applied, we don't have to output anything - nothing more need be done -*/ - md_apply_fix(fixP, add_number); - - } /* For each fixS in this segment. */ - - -} /* fixup_segment() */ -#endif - - - - |