diff options
Diffstat (limited to 'gas/config/obj-coff.c')
| -rw-r--r-- | gas/config/obj-coff.c | 1772 |
1 files changed, 1772 insertions, 0 deletions
diff --git a/gas/config/obj-coff.c b/gas/config/obj-coff.c new file mode 100644 index 0000000..ef48334 --- /dev/null +++ b/gas/config/obj-coff.c @@ -0,0 +1,1772 @@ +/* coff object file format + 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 1, 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. */ + +/* $Id$ */ + +#include "as.h" + +#include "obstack.h" + +lineno* lineno_rootP; + +const short seg_N_TYPE[] = { /* in: segT out: N_TYPE bits */ + C_ABS_SECTION, + C_TEXT_SECTION, + C_DATA_SECTION, + C_BSS_SECTION, + 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 */ +}; + + +/* Add 4 to the real value to get the index and compensate the negatives */ + +const segT N_TYPE_seg [32] = +{ + SEG_PTV, /* C_PTV_SECTION == -4 */ + SEG_NTV, /* C_NTV_SECTION == -3 */ + SEG_DEBUG, /* C_DEBUG_SECTION == -2 */ + SEG_ABSOLUTE, /* C_ABS_SECTION == -1 */ + SEG_UNKNOWN, /* C_UNDEF_SECTION == 0 */ + SEG_TEXT, /* C_TEXT_SECTION == 1 */ + SEG_DATA, /* C_DATA_SECTION == 2 */ + SEG_BSS, /* C_BSS_SECTION == 3 */ + SEG_GOOF,SEG_GOOF,SEG_GOOF,SEG_GOOF,SEG_GOOF,SEG_GOOF,SEG_GOOF,SEG_GOOF, + SEG_GOOF,SEG_GOOF,SEG_GOOF,SEG_GOOF,SEG_GOOF,SEG_GOOF,SEG_GOOF,SEG_GOOF, + SEG_GOOF,SEG_GOOF,SEG_GOOF,SEG_GOOF,SEG_GOOF,SEG_GOOF,SEG_GOOF,SEG_GOOF +}; + +#ifdef __STDC__ + +char *s_get_name(symbolS *s); +static symbolS *tag_find_or_make(char *name); +static symbolS* tag_find(char *name); +static void c_section_header_append(char **where, SCNHDR *header); +static void obj_coff_def(int what); +static void obj_coff_dim(void); +static void obj_coff_endef(void); +static void obj_coff_line(void); +static void obj_coff_ln(void); +static void obj_coff_scl(void); +static void obj_coff_size(void); +static void obj_coff_stab(int what); +static void obj_coff_tag(void); +static void obj_coff_type(void); +static void obj_coff_val(void); +static void tag_init(void); +static void tag_insert(char *name, symbolS *symbolP); + +#else + +char *s_get_name(); +static symbolS *tag_find(); +static symbolS *tag_find_or_make(); +static void c_section_header_append(); +static void obj_coff_def(); +static void obj_coff_dim(); +static void obj_coff_endef(); +static void obj_coff_line(); +static void obj_coff_ln(); +static void obj_coff_scl(); +static void obj_coff_size(); +static void obj_coff_stab(); +static void obj_coff_tag(); +static void obj_coff_type(); +static void obj_coff_val(); +static void tag_init(); +static void tag_insert(); + +#endif /* __STDC__ */ + +static struct hash_control *tag_hash; +static symbolS *def_symbol_in_progress = NULL; + +const pseudo_typeS obj_pseudo_table[] = { +#ifndef IGNORE_DEBUG + { "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 }, +#else + { "def", s_ignore, 0 }, + { "dim", s_ignore, 0 }, + { "endef", s_ignore, 0 }, + { "line", s_ignore, 0 }, + { "ln", s_ignore, 0 }, + { "scl", s_ignore, 0 }, + { "size", s_ignore, 0 }, + { "tag", s_ignore, 0 }, + { "type", s_ignore, 0 }, + { "val", s_ignore, 0 }, +#endif /* ignore debug */ + + /* stabs aka a.out aka b.out directives for debug symbols. + Currently ignored silently. Except for .line which we + guess at from context. */ + { "desc", s_ignore, 0 }, /* def */ +/* { "line", s_ignore, 0 }, */ /* source code line number */ + { "stabd", obj_coff_stab, 'd' }, /* stabs */ + { "stabn", obj_coff_stab, 'n' }, /* stabs */ + { "stabs", obj_coff_stab, 's' }, /* stabs */ + + /* other stuff */ + { "ABORT", s_abort, 0 }, + { "ident", s_ignore, 0 }, + + { NULL} /* end sentinel */ +}; /* obj_pseudo_table */ + + + /* obj dependant output values */ +static SCNHDR bss_section_header; +static SCNHDR data_section_header; +static SCNHDR text_section_header; + +/* Relocation. */ + +/* + * emit_relocations() + * + * Crawl along a fixS chain. Emit the segment's relocations. + */ + +void obj_emit_relocations(where, fixP, segment_address_in_file) +char **where; +fixS *fixP; /* Fixup chain for this segment. */ +relax_addressT segment_address_in_file; +{ + RELOC ri; + symbolS *symbolP; + + bzero((char *)&ri,sizeof(ri)); + for (; fixP; fixP = fixP->fx_next) { + if (symbolP = fixP->fx_addsy) { +#if defined(TC_M68K) + ri.r_type = (fixP->fx_pcrel ? + (fixP->fx_size == 1 ? R_PCRBYTE : + fixP->fx_size == 2 ? R_PCRWORD : + R_PCRLONG): + (fixP->fx_size == 1 ? R_RELBYTE : + fixP->fx_size == 2 ? R_RELWORD : + R_RELLONG)); +#elif defined(TC_I386) + /* FIXME-SOON R_OFF8 & R_DIR16 are a vague guess, completly untested. */ + ri.r_type = (fixP->fx_pcrel ? + (fixP->fx_size == 1 ? R_PCRBYTE : + fixP->fx_size == 2 ? R_PCRWORD : + R_PCRLONG): + (fixP->fx_size == 1 ? R_OFF8 : + fixP->fx_size == 2 ? R_DIR16 : + R_DIR32)); +#elif defined(TC_I960) + ri.r_type = (fixP->fx_pcrel + ? R_IPRMED + : R_RELLONG); +#elif defined(TC_A29K) + ri.r_type = tc_coff_fix2rtype(fixP); +#else + you lose +#endif /* TC_M68K || TC_I386 */ + ri.r_vaddr = fixP->fx_frag->fr_address + fixP->fx_where; + /* If symbol associated to relocation entry is a bss symbol + or undefined symbol just remember the index of the symbol. + Otherwise store the index of the symbol describing the + section the symbol belong to. This heuristic speeds up ld. + */ + /* Local symbols can generate relocation information. In case + of structure return for instance. But they have no symbol + number because they won't be emitted in the final object. + In the case where they are in the BSS section, this leads + to an incorrect r_symndx. + Under bsd the loader do not care if the symbol reference is + incorrect. But the SYS V ld complains about this. To avoid + this we associate the symbol to the associated section, + *even* if it is the BSS section. */ + /* If someone can tell me why the other symbols of the bss + section are not associated with the .bss section entry, + I'd be gratefull. I guess that it has to do with the special + nature of the .bss section. Or maybe this is because the + bss symbols are declared in the common section and can + be resized later. Can it break code some where ? */ + ri.r_symndx = (S_GET_SEGMENT(symbolP) == SEG_TEXT + ? dot_text_symbol->sy_number + : (S_GET_SEGMENT(symbolP) == SEG_DATA + ? dot_data_symbol->sy_number + : ((SF_GET_LOCAL(symbolP) + ? dot_bss_symbol->sy_number + : symbolP->sy_number)))); /* bss or undefined */ + + /* md_ri_to_chars((char *) &ri, ri); */ /* Last step : write md f */ + append(where, (char *) &ri, sizeof(ri)); + +#ifdef TC_I960 + if (fixP->fx_callj) { + ri.r_type = R_OPTCALL; + append(where, (char *) &ri, sizeof(ri)); + } /* if it's a callj, do it again for the opcode */ +#endif /* TC_I960 */ + + } /* if there's a symbol */ + } /* for each fixP */ + + return; +} /* obj_emit_relocations() */ + +/* Coff file generation & utilities */ + +void obj_header_append(where, headers) +char **where; +object_headers *headers; +{ + tc_headers_hook(headers); + +#ifdef CROSS_ASSEMBLE + /* Eventually swap bytes for cross compilation for file header */ + md_number_to_chars(*where, headers->filehdr.f_magic, sizeof(headers->filehdr.f_magic)); + *where += sizeof(headers->filehdr.f_magic); + md_number_to_chars(*where, headers->filehdr.f_nscns, sizeof(headers->filehdr.f_nscns)); + *where += sizeof(headers->filehdr.f_nscns); + md_number_to_chars(*where, headers->filehdr.f_timdat, sizeof(headers->filehdr.f_timdat)); + *where += sizeof(headers->filehdr.f_timdat); + md_number_to_chars(*where, headers->filehdr.f_symptr, sizeof(headers->filehdr.f_symptr)); + *where += sizeof(headers->filehdr.f_symptr); + md_number_to_chars(*where, headers->filehdr.f_nsyms, sizeof(headers->filehdr.f_nsyms)); + *where += sizeof(headers->filehdr.f_nsyms); + md_number_to_chars(*where, headers->filehdr.f_opthdr, sizeof(headers->filehdr.f_opthdr)); + *where += sizeof(headers->filehdr.f_opthdr); + md_number_to_chars(*where, headers->filehdr.f_flags, sizeof(headers->filehdr.f_flags)); + *where += sizeof(headers->filehdr.f_flags); + +#ifndef OBJ_COFF_OMIT_OPTIONAL_HEADER + /* Eventually swap bytes for cross compilation for a.out header */ + md_number_to_chars(*where, headers->aouthdr.magic, sizeof(headers->aouthdr.magic)); + *where += sizeof(headers->aouthdr.magic); + md_number_to_chars(*where, headers->aouthdr.vstamp, sizeof(headers->aouthdr.vstamp)); + *where += sizeof(headers->aouthdr.vstamp); + md_number_to_chars(*where, headers->aouthdr.tsize, sizeof(headers->aouthdr.tsize)); + *where += sizeof(headers->aouthdr.tsize); + md_number_to_chars(*where, headers->aouthdr.dsize, sizeof(headers->aouthdr.dsize)); + *where += sizeof(headers->aouthdr.dsize); + md_number_to_chars(*where, headers->aouthdr.bsize, sizeof(headers->aouthdr.bsize)); + *where += sizeof(headers->aouthdr.bsize); + md_number_to_chars(*where, headers->aouthdr.entry, sizeof(headers->aouthdr.entry)); + *where += sizeof(headers->aouthdr.entry); + md_number_to_chars(*where, headers->aouthdr.text_start, sizeof(headers->aouthdr.text_start)); + *where += sizeof(headers->aouthdr.text_start); + md_number_to_chars(*where, headers->aouthdr.data_start, sizeof(headers->aouthdr.data_start)); + *where += sizeof(headers->aouthdr.data_start); +#endif /* OBJ_COFF_OMIT_OPTIONAL_HEADER */ + +#else /* CROSS_ASSEMBLE */ + + append(where, (char *) &headers->filehdr, sizeof(headers->filehdr)); +#ifndef OBJ_COFF_OMIT_OPTIONAL_HEADER + append(where, (char *) &headers->aouthdr, sizeof(headers->aouthdr)); +#endif /* OBJ_COFF_OMIT_OPTIONAL_HEADER */ + +#endif /* CROSS_ASSEMBLE */ + + /* Output the section headers */ + c_section_header_append(where, &text_section_header); + c_section_header_append(where, &data_section_header); + c_section_header_append(where, &bss_section_header); + + return; +} /* obj_header_append() */ + +void obj_symbol_to_chars(where, symbolP) +char **where; +symbolS *symbolP; +{ + SYMENT *syment = &symbolP->sy_symbol.ost_entry; + int i; + char numaux = syment->n_numaux; + unsigned short type = S_GET_DATA_TYPE(symbolP); + +#ifdef CROSS_ASSEMBLE + md_number_to_chars(*where, syment->n_value, sizeof(syment->n_value)); + *where += sizeof(syment->n_value); + md_number_to_chars(*where, syment->n_scnum, sizeof(syment->n_scnum)); + *where += sizeof(syment->n_scnum); + md_number_to_chars(*where, syment->n_type, sizeof(syment->n_type)); + *where += sizeof(syment->n_type); + md_number_to_chars(*where, syment->n_sclass, sizeof(syment->n_sclass)); + *where += sizeof(syment->n_sclass); + md_number_to_chars(*where, syment->n_numaux, sizeof(syment->n_numaux)); + *where += sizeof(syment->n_numaux); +#else /* CROSS_ASSEMBLE */ + append(where, (char *) syment, sizeof(*syment)); +#endif /* CROSS_ASSEMBLE */ + + /* Should do the following : if (.file entry) MD(..)... else if (static entry) MD(..) */ + if (numaux > OBJ_COFF_MAX_AUXENTRIES) { + as_bad("Internal error? too many auxents for symbol"); + } /* too many auxents */ + + for (i = 0; i < numaux; ++i) { +#ifdef CROSS_ASSEMBLE +#if 0 /* This code has never been tested */ + /* The most common case, x_sym entry. */ + if ((SF_GET(symbolP) & (SF_FILE | SF_STATICS)) == 0) { + md_number_to_chars(*where, auxP->x_sym.x_tagndx, sizeof(auxP->x_sym.x_tagndx)); + *where += sizeof(auxP->x_sym.x_tagndx); + if (ISFCN(type)) { + md_number_to_chars(*where, auxP->x_sym.x_misc.x_fsize, sizeof(auxP->x_sym.x_misc.x_fsize)); + *where += sizeof(auxP->x_sym.x_misc.x_fsize); + } else { + md_number_to_chars(*where, auxP->x_sym.x_misc.x_lnno, sizeof(auxP->x_sym.x_misc.x_lnno)); + *where += sizeof(auxP->x_sym.x_misc.x_lnno); + md_number_to_chars(*where, auxP->x_sym.x_misc.x_size, sizeof(auxP->x_sym.x_misc.x_size)); + *where += sizeof(auxP->x_sym.x_misc.x_size); + } + if (ISARY(type)) { + register int index; + for (index = 0; index < DIMNUM; index++) + md_number_to_chars(*where, auxP->x_sym.x_fcnary.x_ary.x_dimen[index], sizeof(auxP->x_sym.x_fcnary.x_ary.x_dimen[index])); + *where += sizeof(auxP->x_sym.x_fcnary.x_ary.x_dimen[index]); + } else { + md_number_to_chars(*where, auxP->x_sym.x_fcnary.x_fcn.x_lnnoptr, sizeof(auxP->x_sym.x_fcnary.x_fcn.x_lnnoptr)); + *where += sizeof(auxP->x_sym.x_fcnary.x_fcn.x_lnnoptr); + md_number_to_chars(*where, auxP->x_sym.x_fcnary.x_fcn.x_endndx, sizeof(auxP->x_sym.x_fcnary.x_fcn.x_endndx)); + *where += sizeof(auxP->x_sym.x_fcnary.x_fcn.x_endndx); + } + md_number_to_chars(*where, auxP->x_sym.x_tvndx, sizeof(auxP->x_sym.x_tvndx)); + *where += sizeof(auxP->x_sym.x_tvndx); + } else if (SF_GET_FILE(symbolP)) { /* .file */ + ; + } else if (SF_GET_STATICS(symbolP)) { /* .text, .data, .bss symbols */ + md_number_to_chars(*where, auxP->x_scn.x_scnlen, sizeof(auxP->x_scn.x_scnlen)); + *where += sizeof(auxP->x_scn.x_scnlen); + md_number_to_chars(*where, auxP->x_scn.x_nreloc, sizeof(auxP->x_scn.x_nreloc)); + *where += sizeof(auxP->x_scn.x_nreloc); + md_number_to_chars(*where, auxP->x_scn.x_nlinno, sizeof(auxP->x_scn.x_nlinno)); + *where += sizeof(auxP->x_scn.x_nlinno); + } +#endif /* 0 */ +#else /* CROSS_ASSEMBLE */ + append(where, (char *) &symbolP->sy_symbol.ost_auxent[i], sizeof(symbolP->sy_symbol.ost_auxent[i])); +#endif /* CROSS_ASSEMBLE */ + + }; /* for each aux in use */ + + return; +} /* obj_symbol_to_chars() */ + +static void c_section_header_append(where, header) +char **where; +SCNHDR *header; +{ +#ifdef CROSS_ASSEMBLE + md_number_to_chars(*where, header->s_paddr, sizeof(header->s_paddr)); + *where += sizeof(header->s_paddr); + + md_number_to_chars(*where, header->s_vaddr, sizeof(header->s_vaddr)); + *where += sizeof(header->s_vaddr); + + md_number_to_chars(*where, header->s_size, sizeof(header->s_size)); + *where += sizeof(header->s_size); + + md_number_to_chars(*where, header->s_scnptr, sizeof(header->s_scnptr)); + *where += sizeof(header->s_scnptr); + + md_number_to_chars(*where, header->s_relptr, sizeof(header->s_relptr)); + *where += sizeof(header->s_relptr); + + md_number_to_chars(*where, header->s_lnnoptr, sizeof(header->s_lnnoptr)); + *where += sizeof(header->s_lnnoptr); + + md_number_to_chars(*where, header->s_nreloc, sizeof(header->s_nreloc)); + *where += sizeof(header->s_nreloc); + + md_number_to_chars(*where, header->s_nlnno, sizeof(header->s_nlnno)); + *where += sizeof(header->s_nlnno); + + md_number_to_chars(*where, header->s_flags, sizeof(header->s_flags)); + *where += sizeof(header->s_flags); + +#else /* CROSS_ASSEMBLE */ + + append(where, (char *) header, sizeof(*header)); + +#endif /* CROSS_ASSEMBLE */ + + return; +} /* c_section_header_append() */ + + +void obj_emit_symbols(where, symbol_rootP) +char **where; +symbolS *symbol_rootP; +{ + symbolS *symbolP; + /* + * 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); + } + obj_symbol_to_chars(where, symbolP); + S_SET_NAME(symbolP,temp); + } +} /* obj_emit_symbols() */ + +/* Merge a debug symbol containing debug information into a normal symbol. */ + +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 symbolS *previous_file_symbol = NULL; + +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. + */ + +char *c_section_symbol(name, value, length, nreloc, nlnno) +char *name; +long value; +long length; +unsigned short nreloc; +unsigned short nlnno; +{ + symbolS *symbolP; + + symbolP = symbol_new(name, + (name[1] == 't' + ? SEG_TEXT + : (name[1] == 'd' + ? SEG_DATA + : SEG_BSS)), + value, + &zero_address_frag); + + S_SET_STORAGE_CLASS(symbolP, C_STAT); + S_SET_NUMBER_AUXILIARY(symbolP, 1); + + SA_SET_SCN_SCNLEN(symbolP, length); + SA_SET_SCN_NRELOC(symbolP, nreloc); + SA_SET_SCN_NLINNO(symbolP, nlnno); + + SF_SET_STATICS(symbolP); + + return (char*)symbolP; +} /* c_section_symbol() */ + +void c_section_header(header, + name, + core_address, + size, + data_ptr, + reloc_ptr, + lineno_ptr, + reloc_number, + lineno_number, + alignment) +SCNHDR *header; +char *name; +long core_address; +long size; +long data_ptr; +long reloc_ptr; +long lineno_ptr; +long reloc_number; +long lineno_number; +long alignment; +{ + strncpy(header->s_name, name, 8); + header->s_paddr = header->s_vaddr = core_address; + header->s_scnptr = ((header->s_size = size) != 0) ? data_ptr : 0; + header->s_relptr = reloc_ptr; + header->s_lnnoptr = lineno_ptr; + header->s_nreloc = reloc_number; + header->s_nlnno = lineno_number; + +#ifdef OBJ_COFF_SECTION_HEADER_HAS_ALIGNMENT +#ifdef OBJ_COFF_BROKEN_ALIGNMENT + header->s_align = ((name[1] == 'b' || (size > 0)) ? 16 : 0); +#else + header->s_align = ((alignment == 0) + ? 0 + : (1 << alignment)); +#endif /* OBJ_COFF_BROKEN_ALIGNMENT */ +#endif /* OBJ_COFF_SECTION_HEADER_HAS_ALIGNMENT */ + + header->s_flags = STYP_REG | (name[1] == 't' + ? STYP_TEXT + : (name[1] == 'd' + ? STYP_DATA + : (name[1] == 'b' + ? STYP_BSS + : STYP_INFO))); + return; +} /* c_section_header() */ + +/* Line number handling */ + +int function_lineoff = -1; /* Offset in line#s where the last function + started (the odd entry for line #0) */ +int text_lineno_number = 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. */ +lineno* lineno_lastP = (lineno*)0; + +int +c_line_new(paddr, line_number, frag) +long paddr; +unsigned short line_number; +fragS* frag; +{ + lineno* new_line = (lineno*)xmalloc(sizeof(lineno)); + + new_line->line.l_addr.l_paddr = paddr; + new_line->line.l_lnno = line_number; + new_line->frag = (char*)frag; + new_line->next = (lineno*)0; + + if (lineno_rootP == (lineno*)0) + lineno_rootP = new_line; + else + lineno_lastP->next = new_line; + lineno_lastP = new_line; + return LINESZ * our_lineno_number++; +} + +void obj_emit_lineno(where, line, file_start) +char **where; +lineno *line; +char *file_start; +{ + LINENO *line_entry; + + for (; line; line = line->next) { + line_entry = &line->line; + + /* FIXME-SOMEDAY Resolving the sy_number of function linno's used to be done in + write_object_file() but their symbols need a fileptr to the lnno, so + I moved this resolution check here. xoxorich. */ + + if (line_entry->l_lnno == 0) { + /* There is a good chance that the symbol pointed to + is not the one that will be emitted and that the + sy_number is not accurate. */ +/* char *name; */ + symbolS *symbolP; + + symbolP = (symbolS *) line_entry->l_addr.l_symndx; + + line_entry->l_addr.l_symndx = symbolP->sy_number; + symbolP->sy_symbol.ost_auxent[0].x_sym.x_fcnary.x_fcn.x_lnnoptr = *where - file_start; + + } /* if this is a function linno */ + + /* No matter which member of the union we process, they are + both long. */ +#ifdef CROSS_ASSEMBLE + md_number_to_chars(*where, line_entry->l_addr.l_paddr, sizeof(line_entry->l_addr.l_paddr)); + *where += sizeof(line_entry->l_addr.l_paddr); + + md_number_to_chars(*where, line_entry->l_lnno, sizeof(line_entry->l_lnno)); + *where += sizeof(line_entry->l_lnno); +#else /* CROSS_ASSEMBLE */ + append(where, (char *) line_entry, LINESZ); +#endif /* CROSS_ASSEMBLE */ + + } /* for each line number */ + + return ; +} /* obj_emit_lineno() */ + +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); + +#if 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(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 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 */ +#if 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 obj_coff_endef() { + symbolS *symbolP; +/* 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_TEXT); + + 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 obj_crawl_symbol_chain() 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, &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() */ +#if 0 +This code expects all the dims to be after one another, and that is not true +for gcc960 +sac@cygnus.com +static 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 ';': + dim_index = DIMNUM; + break; + } /* switch on following character */ + } /* for each dimension */ + + demand_empty_rest_of_line(); + return; +} /* obj_coff_dim() */ +#else + +static void +obj_coff_dim() +{ + 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); + + /* Grab as many dims as we can fit, until ; or full */ + while (dim_index < DIMNUM) + { + SKIP_WHITESPACES(); + SA_SET_SYM_DIMEN(def_symbol_in_progress, dim_index, get_absolute_expression()); + dim_index++; + if (*input_line_pointer == ';') break; + if (*input_line_pointer != ',') { + as_warn("badly formed .dim directive ignored"); + break; + } + input_line_pointer++; + } + demand_empty_rest_of_line(); + return; +} /* obj_coff_dim() */ +#endif + +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; +{ +#if 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. */ + know(sizeof(SYMENT) == sizeof(AUXENT)); + know(SYMESZ == AUXESZ); + + tag_init(); + + return; +} /* obj_read_begin_hook() */ + +void obj_crawl_symbol_chain(headers) +object_headers *headers; +{ + int symbol_number = 0; + lineno *lineP; + symbolS *last_functionP = NULL; + symbolS *last_tagP; + symbolS *symbolP; + symbolS *symbol_externP = NULL; + symbolS *symbol_extern_lastP = NULL; + + /* Initialize the stack used to keep track of the matching .bb .be */ + stack* 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 */ + + tc_crawl_symbol_chain(headers); + + /* The symbol list should be ordered according to the following sequence + * order : + * . .file symbol + * . debug entries for functions + * . fake symbols for .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) { + know(!previous_file_symbol); + c_dot_file_symbol("fake"); + } /* Is there a .file symbol ? If not insert one at the beginning. */ + + /* + * Build up static symbols for .text, .data and .bss + */ + dot_text_symbol = (symbolS*) + c_section_symbol(".text", + 0, + H_GET_TEXT_SIZE(headers), + 0/*text_relocation_number */, + 0/*text_lineno_number */); + + dot_data_symbol = (symbolS*) + c_section_symbol(".data", + H_GET_TEXT_SIZE(headers), + H_GET_DATA_SIZE(headers), + 0/*data_relocation_number */, + 0); /* There are no data lineno entries */ + + dot_bss_symbol = (symbolS*) + c_section_symbol(".bss", + H_GET_TEXT_SIZE(headers) + H_GET_DATA_SIZE(headers), + H_GET_BSS_SIZE(headers), + 0, /* No relocation for a bss section. */ + 0); /* There are no bss lineno entries */ + +#if defined(DEBUG) + verify_symbol_chain(symbol_rootP, symbol_lastP); +#endif /* DEBUG */ + + /* Three traversals of symbol chains here. The + first traversal yanks externals into a temporary + chain, removing the externals from the global + chain, numbers symbols, and does some other guck. + The second traversal is on the temporary chain of + externals and just appends them to the global + chain again, numbering them as we go. The third + traversal patches pointers to symbols (using sym + indexes). The last traversal was once done as + part of the first pass, but that fails when a + reference preceeds a definition as the definition + has no number at the time we process the + reference. */ + + /* Note that symbolP will be NULL at the end of a loop + if an external was at the beginning of the list (it + gets moved off the list). Hence the weird check in + the loop control. + */ + 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_DATA)) { + S_SET_SEGMENT(symbolP, SEG_TEXT); + } /* 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_TEXT){ + S_SET_STORAGE_CLASS(symbolP, C_LABEL); + } else { + S_SET_STORAGE_CLASS(symbolP, C_STAT); + } + } /* no storage class yet */ + + /* 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 && !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 */ + + 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 */ + + /* When a tag reference preceeds the tag definition, + the definition will not have a number at the time + we process the reference during the first + traversal. Thus, a second traversal. */ + + for (symbolP = symbol_rootP; symbolP; symbolP = symbol_next(symbolP)) { + if (SF_GET_TAGGED(symbolP)) { + SA_SET_SYM_TAGNDX(symbolP, ((symbolS*) SA_GET_SYM_TAGNDX(symbolP))->sy_number); + } /* If the symbol has a tagndx entry, resolve it */ + } /* second traversal */ + + know(symbol_externP == NULL); + know(symbol_extern_lastP == NULL); + + /* FIXME-SOMEDAY I'm counting line no's here so we know what to put in the section + headers, and I'm resolving the addresses since I'm not sure how to + do it later. I am NOT resolving the linno's representing functions. + Their symbols need a fileptr pointing to this linno when emitted. + Thus, I resolve them on emit. xoxorich. */ + + for (lineP = lineno_rootP; lineP; lineP = lineP->next) { + if (lineP->line.l_lnno > 0) { + lineP->line.l_addr.l_paddr += ((fragS*)lineP->frag)->fr_address; + } else { + ; + } + text_lineno_number++; + } /* for each line number */ + + H_SET_SYMBOL_TABLE_SIZE(headers, symbol_number); + + return; +} /* obj_crawl_symbol_chain() */ + +/* + * Find strings by crawling along symbol table chain. + */ + +void obj_emit_strings(where) +char **where; +{ + symbolS *symbolP; + +#ifdef CROSS_ASSEMBLE + /* 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); +#else /* CROSS_ASSEMBLE */ + append(where, (char *) &string_byte_count, (unsigned long) sizeof(string_byte_count)); +#endif /* CROSS_ASSEMBLE */ + + for (symbolP = symbol_rootP; symbolP; symbolP = symbol_next(symbolP)) { + if (SF_GET_STRING(symbolP)) { + append(where, S_GET_NAME(symbolP), (unsigned long)(strlen(S_GET_NAME(symbolP)) + 1)); + } /* if it has a string */ + } /* walk the symbol chain */ + + return; +} /* obj_emit_strings() */ + +void obj_pre_write_hook(headers) +object_headers *headers; +{ + register int text_relocation_number = 0; + register int data_relocation_number = 0; + register fixS *fixP; + + /* FIXME-SOMEDAY this should be done at + fixup_segment time but I'm going to wait until I + do multiple segments. xoxorich. */ + /* Count the number of relocation entries for text and data */ + for (fixP = text_fix_root; fixP; fixP = fixP->fx_next) { + if (fixP->fx_addsy) { + ++text_relocation_number; +#ifdef TC_I960 + /* two relocs per callj under coff. */ + if (fixP->fx_callj) { + ++text_relocation_number; + } /* if callj and not already fixed. */ +#endif /* TC_I960 */ + + } /* if not yet fixed */ + } /* for each fix */ + + SA_SET_SCN_NRELOC(dot_text_symbol, text_relocation_number); + /* Assign the number of line number entries for the text section */ + SA_SET_SCN_NLINNO(dot_text_symbol, text_lineno_number); + /* Assign the size of the section */ + SA_SET_SCN_SCNLEN(dot_text_symbol, H_GET_TEXT_SIZE(headers)); + + for (fixP = data_fix_root; fixP; fixP = fixP->fx_next) { + if (fixP->fx_addsy) { + ++data_relocation_number; + } /* if still relocatable */ + } /* for each fix */ + + SA_SET_SCN_NRELOC(dot_data_symbol, data_relocation_number); + /* Assign the size of the section */ + SA_SET_SCN_SCNLEN(dot_data_symbol, H_GET_DATA_SIZE(headers)); + + /* Assign the size of the section */ + SA_SET_SCN_SCNLEN(dot_bss_symbol, H_GET_BSS_SIZE(headers)); + + /* Fill in extra coff fields */ + + /* Initialize general line number information. */ + H_SET_LINENO_SIZE(headers, text_lineno_number * LINESZ); + + /* filehdr */ + H_SET_FILE_MAGIC_NUMBER(headers, FILE_HEADER_MAGIC); + H_SET_NUMBER_OF_SECTIONS(headers, 3); /* text+data+bss */ + H_SET_TIME_STAMP(headers, (long)time((long*)0)); + H_SET_SYMBOL_TABLE_POINTER(headers, H_GET_SYMBOL_TABLE_FILE_OFFSET(headers)); + /* symbol table size allready set */ + H_SET_SIZEOF_OPTIONAL_HEADER(headers, OBJ_COFF_AOUTHDRSZ); +#ifndef OBJ_COFF_IGNORE_EXEC_FLAG + H_SET_FLAGS(headers, (text_lineno_number == 0 ? F_LNNO : 0) + | ((text_relocation_number + data_relocation_number) ? 0 : F_EXEC) + | BYTE_ORDERING); +#else /* OBJ_COFF_IGNORE_EXEC_FLAG */ + H_SET_FLAGS(headers, (text_lineno_number == 0 ? F_LNNO : 0) + | BYTE_ORDERING); +#endif /* OBJ_COFF_IGNORE_EXEC_FLAG */ + + /* aouthdr */ + /* magic number allready set */ + H_SET_VERSION_STAMP(headers, 0); + /* Text, data, bss size; entry point; text_start and data_start are already set */ + + /* Build section headers */ + + c_section_header(&text_section_header, + ".text", + 0, + H_GET_TEXT_SIZE(headers), + H_GET_TEXT_FILE_OFFSET(headers), + (SA_GET_SCN_NRELOC(dot_text_symbol) + ? H_GET_RELOCATION_FILE_OFFSET(headers) + : 0), + (text_lineno_number + ? H_GET_LINENO_FILE_OFFSET(headers) + : 0), + SA_GET_SCN_NRELOC(dot_text_symbol), + text_lineno_number, + section_alignment[(int) SEG_TEXT]); + + c_section_header(&data_section_header, + ".data", + H_GET_TEXT_SIZE(headers), + H_GET_DATA_SIZE(headers), + (H_GET_DATA_SIZE(headers) + ? H_GET_DATA_FILE_OFFSET(headers) + : 0), + (SA_GET_SCN_NRELOC(dot_data_symbol) + ? (H_GET_RELOCATION_FILE_OFFSET(headers) + + text_section_header.s_nreloc * RELSZ) + : 0), + 0, /* No line number information */ + SA_GET_SCN_NRELOC(dot_data_symbol), + 0, /* No line number information */ + section_alignment[(int) SEG_DATA]); + + c_section_header(&bss_section_header, + ".bss", + H_GET_TEXT_SIZE(headers) + H_GET_DATA_SIZE(headers), + H_GET_BSS_SIZE(headers), + 0, /* No file offset */ + 0, /* No relocation information */ + 0, /* No line number information */ + 0, /* No relocation information */ + 0, /* No line number information */ + section_alignment[(int) SEG_BSS]); + + return; +} /* obj_pre_write_hook() */ + +/* This is a copy from aout. All I do is neglect to actually build the symbol. */ + +static void obj_coff_stab(what) +int what; +{ + char *string; + expressionS e; + int goof = 0; /* TRUE if we have aborted. */ + int length; + int saved_type = 0; + long longint; + symbolS *symbolP = 0; + + if (what == 's') { + string = demand_copy_C_string(&length); + SKIP_WHITESPACE(); + + if (*input_line_pointer == ',') { + input_line_pointer++; + } else { + as_bad("I need a comma after symbol's name"); + goof = 1; + } /* better be a comma */ + } /* skip the string */ + + /* + * Input_line_pointer->after ','. String->symbol name. + */ + if (!goof) { + if (get_absolute_expression_and_terminator(&longint) != ',') { + as_bad("I want a comma after the n_type expression"); + goof = 1; + input_line_pointer--; /* Backup over a non-',' char. */ + } /* on error */ + } /* no error */ + + if (!goof) { + if (get_absolute_expression_and_terminator(&longint) != ',') { + as_bad("I want a comma after the n_other expression"); + goof = 1; + input_line_pointer--; /* Backup over a non-',' char. */ + } /* on error */ + } /* no error */ + + if (!goof) { + get_absolute_expression(); + + if (what == 's' || what == 'n') { + if (*input_line_pointer != ',') { + as_bad("I want a comma after the n_desc expression"); + goof = 1; + } else { + input_line_pointer++; + } /* on goof */ + } /* not stabd */ + } /* no error */ + + expression(&e); + + if (goof) { + ignore_rest_of_line(); + } else { + demand_empty_rest_of_line(); + } /* on error */ +} /* obj_coff_stab() */ + +#ifdef DEBUG + /* for debugging */ +char *s_get_name(s) +symbolS *s; +{ + return((s == NULL) ? "(NULL)" : S_GET_NAME(s)); +} /* s_get_name() */ + +void symbol_dump() { + symbolS *symbolP; + + for (symbolP = symbol_rootP; symbolP; symbolP = symbol_next(symbolP)) { + printf("%3ld: 0x%lx \"%s\" type = %ld, class = %d, segment = %d\n", + symbolP->sy_number, + (unsigned long) symbolP, + S_GET_NAME(symbolP), + (long) S_GET_DATA_TYPE(symbolP), + S_GET_STORAGE_CLASS(symbolP), + (int) S_GET_SEGMENT(symbolP)); + } /* traverse symbols */ + + return; +} /* symbol_dump() */ +#endif /* DEBUG */ + +/* + * Local Variables: + * comment-column: 0 + * fill-column: 131 + * End: + */ + +/* end of obj-coff.c */ |