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e120d9fbcd
before checking sy_mri_common. (fixup_segment): Likewise. * config/obj-coff.c (fixup_segment): Likewise.
4007 lines
100 KiB
C
4007 lines
100 KiB
C
/* coff object file format
|
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Copyright (C) 1989, 1990, 1991, 1992, 1993, 1994
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Free Software Foundation, Inc.
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This file is part of GAS.
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GAS is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2, or (at your option)
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any later version.
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GAS is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with GAS; see the file COPYING. If not, write to
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the Free Software Foundation, 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */
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#include "as.h"
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#include "obstack.h"
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#include "subsegs.h"
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/* I think this is probably always correct. */
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#ifndef KEEP_RELOC_INFO
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#define KEEP_RELOC_INFO
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#endif
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/* structure used to keep the filenames which
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are too long around so that we can stick them
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into the string table */
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struct filename_list
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{
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char *filename;
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struct filename_list *next;
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};
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static struct filename_list *filename_list_head;
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static struct filename_list *filename_list_tail;
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const char *s_get_name PARAMS ((symbolS * s));
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static symbolS *def_symbol_in_progress;
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/* stack stuff */
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typedef struct
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{
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unsigned long chunk_size;
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unsigned long element_size;
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unsigned long size;
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char *data;
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unsigned long pointer;
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}
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stack;
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static stack *
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stack_init (chunk_size, element_size)
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unsigned long chunk_size;
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unsigned long element_size;
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{
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stack *st;
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st = (stack *) malloc (sizeof (stack));
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if (!st)
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return 0;
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st->data = malloc (chunk_size);
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if (!st->data)
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{
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free (st);
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return 0;
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}
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st->pointer = 0;
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st->size = chunk_size;
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st->chunk_size = chunk_size;
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st->element_size = element_size;
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return st;
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}
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#if 0
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/* Not currently used. */
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static void
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stack_delete (st)
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stack *st;
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{
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free (st->data);
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free (st);
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}
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#endif
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static char *
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stack_push (st, element)
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stack *st;
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char *element;
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{
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if (st->pointer + st->element_size >= st->size)
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{
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st->size += st->chunk_size;
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if ((st->data = xrealloc (st->data, st->size)) == (char *) 0)
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return (char *) 0;
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}
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memcpy (st->data + st->pointer, element, st->element_size);
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st->pointer += st->element_size;
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return st->data + st->pointer;
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}
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static char *
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stack_pop (st)
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stack *st;
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{
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if (st->pointer < st->element_size)
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{
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st->pointer = 0;
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return (char *) 0;
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}
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st->pointer -= st->element_size;
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return st->data + st->pointer;
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}
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/*
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* Maintain a list of the tagnames of the structres.
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*/
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static struct hash_control *tag_hash;
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static void
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tag_init ()
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{
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tag_hash = hash_new ();
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}
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static void
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tag_insert (name, symbolP)
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const char *name;
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symbolS *symbolP;
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{
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const char *error_string;
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if ((error_string = hash_jam (tag_hash, name, (char *) symbolP)))
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{
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as_fatal ("Inserting \"%s\" into structure table failed: %s",
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name, error_string);
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}
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}
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static symbolS *
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tag_find (name)
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char *name;
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{
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#ifdef STRIP_UNDERSCORE
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if (*name == '_')
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name++;
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#endif /* STRIP_UNDERSCORE */
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return (symbolS *) hash_find (tag_hash, name);
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}
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static symbolS *
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tag_find_or_make (name)
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char *name;
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{
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symbolS *symbolP;
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if ((symbolP = tag_find (name)) == NULL)
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{
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symbolP = symbol_new (name, undefined_section,
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0, &zero_address_frag);
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tag_insert (S_GET_NAME (symbolP), symbolP);
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#ifdef BFD_ASSEMBLER
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symbol_table_insert (symbolP);
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#endif
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} /* not found */
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return symbolP;
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}
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#ifdef BFD_ASSEMBLER
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static void SA_SET_SYM_TAGNDX PARAMS ((symbolS *, symbolS *));
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#define GET_FILENAME_STRING(X) \
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((char*)(&((X)->sy_symbol.ost_auxent->x_file.x_n.x_offset))[1])
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/* @@ Ick. */
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static segT
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fetch_coff_debug_section ()
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{
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static segT debug_section;
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if (!debug_section)
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{
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CONST asymbol *s;
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s = bfd_make_debug_symbol (stdoutput, (char *) 0, 0);
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assert (s != 0);
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debug_section = s->section;
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}
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return debug_section;
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}
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void
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SA_SET_SYM_ENDNDX (sym, val)
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symbolS *sym;
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symbolS *val;
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{
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combined_entry_type *entry, *p;
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entry = &coffsymbol (sym->bsym)->native[1];
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p = coffsymbol (val->bsym)->native;
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entry->u.auxent.x_sym.x_fcnary.x_fcn.x_endndx.p = p;
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entry->fix_end = 1;
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}
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static void
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SA_SET_SYM_TAGNDX (sym, val)
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symbolS *sym;
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symbolS *val;
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{
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combined_entry_type *entry, *p;
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entry = &coffsymbol (sym->bsym)->native[1];
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p = coffsymbol (val->bsym)->native;
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entry->u.auxent.x_sym.x_tagndx.p = p;
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entry->fix_tag = 1;
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}
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static int
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S_GET_DATA_TYPE (sym)
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symbolS *sym;
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{
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return coffsymbol (sym->bsym)->native->u.syment.n_type;
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}
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int
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S_SET_DATA_TYPE (sym, val)
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symbolS *sym;
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int val;
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{
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coffsymbol (sym->bsym)->native->u.syment.n_type = val;
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return val;
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}
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int
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S_GET_STORAGE_CLASS (sym)
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symbolS *sym;
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{
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return coffsymbol (sym->bsym)->native->u.syment.n_sclass;
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}
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int
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S_SET_STORAGE_CLASS (sym, val)
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symbolS *sym;
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int val;
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{
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coffsymbol (sym->bsym)->native->u.syment.n_sclass = val;
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return val;
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}
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/* Merge a debug symbol containing debug information into a normal symbol. */
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void
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c_symbol_merge (debug, normal)
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symbolS *debug;
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symbolS *normal;
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{
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S_SET_DATA_TYPE (normal, S_GET_DATA_TYPE (debug));
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S_SET_STORAGE_CLASS (normal, S_GET_STORAGE_CLASS (debug));
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if (S_GET_NUMBER_AUXILIARY (debug) > S_GET_NUMBER_AUXILIARY (normal))
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/* take the most we have */
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S_SET_NUMBER_AUXILIARY (normal, S_GET_NUMBER_AUXILIARY (debug));
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if (S_GET_NUMBER_AUXILIARY (debug) > 0)
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{
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/* Move all the auxiliary information. */
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/* @@ How many fields do we want to preserve? Would it make more
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sense to pick and choose those we want to copy? Should look
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into this further.... [raeburn:19920512.2209EST] */
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alent *linenos;
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linenos = coffsymbol (normal->bsym)->lineno;
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memcpy ((char *) &coffsymbol (normal->bsym)->native,
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(char *) &coffsymbol (debug->bsym)->native,
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S_GET_NUMBER_AUXILIARY(debug) * AUXESZ);
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coffsymbol (normal->bsym)->lineno = linenos;
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}
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/* Move the debug flags. */
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SF_SET_DEBUG_FIELD (normal, SF_GET_DEBUG_FIELD (debug));
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}
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static symbolS *previous_file_symbol;
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void
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c_dot_file_symbol (filename)
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char *filename;
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{
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symbolS *symbolP;
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symbolP = symbol_new (filename, bfd_abs_section_ptr, 0, &zero_address_frag);
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S_SET_STORAGE_CLASS (symbolP, C_FILE);
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S_SET_NUMBER_AUXILIARY (symbolP, 1);
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symbolP->bsym->flags = BSF_DEBUGGING;
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#ifndef NO_LISTING
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{
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extern int listing;
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if (listing)
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{
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listing_source_file (filename);
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}
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}
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#endif
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S_SET_VALUE (symbolP, (long) previous_file_symbol);
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previous_file_symbol = symbolP;
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/* Make sure that the symbol is first on the symbol chain */
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if (symbol_rootP != symbolP)
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{
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if (symbolP == symbol_lastP)
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{
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symbol_lastP = symbol_lastP->sy_previous;
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} /* if it was the last thing on the list */
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symbol_remove (symbolP, &symbol_rootP, &symbol_lastP);
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symbol_insert (symbolP, symbol_rootP, &symbol_rootP, &symbol_lastP);
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symbol_rootP = symbolP;
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} /* if not first on the list */
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}
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/*
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* Build a 'section static' symbol.
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*/
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char *
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c_section_symbol (name, value, length, nreloc, nlnno)
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char *name;
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long value;
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long length;
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unsigned short nreloc;
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unsigned short nlnno;
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{
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symbolS *symbolP;
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symbolP = symbol_new (name,
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(name[1] == 't'
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? text_section
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: name[1] == 'd'
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? data_section
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: bss_section),
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value,
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&zero_address_frag);
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S_SET_STORAGE_CLASS (symbolP, C_STAT);
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S_SET_NUMBER_AUXILIARY (symbolP, 1);
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SA_SET_SCN_SCNLEN (symbolP, length);
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SA_SET_SCN_NRELOC (symbolP, nreloc);
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SA_SET_SCN_NLINNO (symbolP, nlnno);
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SF_SET_STATICS (symbolP);
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return (char *) symbolP;
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}
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/* Line number handling */
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struct line_no {
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struct line_no *next;
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fragS *frag;
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alent l;
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};
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int coff_line_base;
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/* Symbol of last function, which we should hang line#s off of. */
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static symbolS *line_fsym;
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#define in_function() (line_fsym != 0)
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#define clear_function() (line_fsym = 0)
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#define set_function(F) (line_fsym = (F), coff_add_linesym (F))
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void
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obj_symbol_new_hook (symbolP)
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symbolS *symbolP;
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{
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char underscore = 0; /* Symbol has leading _ */
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{
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long sz = (OBJ_COFF_MAX_AUXENTRIES + 1) * sizeof (combined_entry_type);
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char *s = (char *) bfd_alloc_by_size_t (stdoutput, sz);
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memset (s, 0, sz);
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coffsymbol (symbolP->bsym)->native = (combined_entry_type *) s;
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}
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S_SET_DATA_TYPE (symbolP, T_NULL);
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S_SET_STORAGE_CLASS (symbolP, 0);
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S_SET_NUMBER_AUXILIARY (symbolP, 0);
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if (S_IS_STRING (symbolP))
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SF_SET_STRING (symbolP);
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if (!underscore && S_IS_LOCAL (symbolP))
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SF_SET_LOCAL (symbolP);
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}
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/*
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* Handle .ln directives.
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*/
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static symbolS *current_lineno_sym;
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static struct line_no *line_nos;
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/* @@ Blindly assume all .ln directives will be in the .text section... */
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static int n_line_nos;
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static void
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add_lineno (frag, offset, num)
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fragS *frag;
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int offset;
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int num;
|
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{
|
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struct line_no *new_line = (struct line_no *) bfd_alloc_by_size_t (stdoutput,
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sizeof (struct line_no));
|
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if (!current_lineno_sym)
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{
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abort ();
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}
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new_line->next = line_nos;
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new_line->frag = frag;
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new_line->l.line_number = num;
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new_line->l.u.offset = offset;
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line_nos = new_line;
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n_line_nos++;
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}
|
||
|
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void
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coff_add_linesym (sym)
|
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symbolS *sym;
|
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{
|
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if (line_nos)
|
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{
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coffsymbol (current_lineno_sym->bsym)->lineno = (alent *) line_nos;
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n_line_nos++;
|
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line_nos = 0;
|
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}
|
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current_lineno_sym = sym;
|
||
}
|
||
|
||
static void
|
||
obj_coff_ln (appline)
|
||
int appline;
|
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{
|
||
int l;
|
||
|
||
if (! appline && def_symbol_in_progress != NULL)
|
||
{
|
||
as_warn (".ln pseudo-op inside .def/.endef: ignored.");
|
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demand_empty_rest_of_line ();
|
||
return;
|
||
}
|
||
|
||
l = get_absolute_expression ();
|
||
if (!appline)
|
||
{
|
||
add_lineno (frag_now, frag_now_fix (), l);
|
||
}
|
||
|
||
#ifndef NO_LISTING
|
||
{
|
||
extern int listing;
|
||
|
||
if (listing)
|
||
{
|
||
if (! appline)
|
||
l += coff_line_base - 1;
|
||
listing_source_line (l);
|
||
}
|
||
}
|
||
#endif
|
||
|
||
demand_empty_rest_of_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;
|
||
|
||
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 ();
|
||
|
||
symbol_name = input_line_pointer;
|
||
#ifdef STRIP_UNDERSCORE
|
||
if (symbol_name[0] == '_' && symbol_name[1] != 0)
|
||
symbol_name++;
|
||
#endif /* STRIP_UNDERSCORE */
|
||
|
||
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 */
|
||
def_symbol_in_progress = symbol_make (symbol_name_copy);
|
||
def_symbol_in_progress->sy_frag = &zero_address_frag;
|
||
S_SET_VALUE (def_symbol_in_progress, 0);
|
||
|
||
if (S_IS_STRING (def_symbol_in_progress))
|
||
SF_SET_STRING (def_symbol_in_progress);
|
||
|
||
*input_line_pointer = name_end;
|
||
|
||
demand_empty_rest_of_line ();
|
||
}
|
||
|
||
unsigned int dim_index;
|
||
|
||
static void
|
||
obj_coff_endef (ignore)
|
||
int ignore;
|
||
{
|
||
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, fetch_coff_debug_section ());
|
||
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:
|
||
{
|
||
CONST char *name;
|
||
S_SET_SEGMENT (def_symbol_in_progress, text_section);
|
||
|
||
name = bfd_asymbol_name (def_symbol_in_progress->bsym);
|
||
if (name[1] == 'b' && name[2] == 'f')
|
||
{
|
||
if (! in_function ())
|
||
as_warn ("`%s' symbol without preceding function", name);
|
||
/* SA_SET_SYM_LNNO (def_symbol_in_progress, 12345);*/
|
||
/* Will need relocating */
|
||
SF_SET_PROCESS (def_symbol_in_progress);
|
||
clear_function ();
|
||
}
|
||
}
|
||
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, absolute_section);
|
||
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
|
||
|| (!strcmp (bfd_get_section_name (stdoutput,
|
||
S_GET_SEGMENT (def_symbol_in_progress)),
|
||
"*DEBUG*")
|
||
&& !SF_GET_TAG (def_symbol_in_progress))
|
||
|| S_GET_SEGMENT (def_symbol_in_progress) == absolute_section
|
||
|| (symbolP = symbol_find_base (S_GET_NAME (def_symbol_in_progress), DO_NOT_STRIP)) == NULL)
|
||
{
|
||
if (def_symbol_in_progress != symbol_lastP)
|
||
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 (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 (SF_GET_FUNCTION (def_symbol_in_progress))
|
||
{
|
||
know (sizeof (def_symbol_in_progress) <= sizeof (long));
|
||
set_function (def_symbol_in_progress);
|
||
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 ();
|
||
}
|
||
|
||
static void
|
||
obj_coff_dim (ignore)
|
||
int ignore;
|
||
{
|
||
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;
|
||
}
|
||
}
|
||
|
||
demand_empty_rest_of_line ();
|
||
}
|
||
|
||
static void
|
||
obj_coff_line (ignore)
|
||
int ignore;
|
||
{
|
||
int this_base;
|
||
|
||
if (def_symbol_in_progress == NULL)
|
||
{
|
||
/* Probably stabs-style line? */
|
||
obj_coff_ln (0);
|
||
return;
|
||
}
|
||
|
||
this_base = get_absolute_expression ();
|
||
if (!strcmp (".bf", S_GET_NAME (def_symbol_in_progress)))
|
||
coff_line_base = this_base;
|
||
|
||
S_SET_NUMBER_AUXILIARY (def_symbol_in_progress, 1);
|
||
SA_SET_SYM_LNNO (def_symbol_in_progress, coff_line_base);
|
||
|
||
demand_empty_rest_of_line ();
|
||
|
||
#ifndef NO_LISTING
|
||
if (strcmp (".bf", S_GET_NAME (def_symbol_in_progress)) == 0)
|
||
{
|
||
extern int listing;
|
||
|
||
if (listing)
|
||
listing_source_line ((unsigned int) coff_line_base);
|
||
}
|
||
#endif
|
||
}
|
||
|
||
static void
|
||
obj_coff_size (ignore)
|
||
int ignore;
|
||
{
|
||
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 ();
|
||
}
|
||
|
||
static void
|
||
obj_coff_scl (ignore)
|
||
int ignore;
|
||
{
|
||
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 ();
|
||
}
|
||
|
||
static void
|
||
obj_coff_tag (ignore)
|
||
int ignore;
|
||
{
|
||
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;
|
||
}
|
||
|
||
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,
|
||
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 ();
|
||
}
|
||
|
||
static void
|
||
obj_coff_type (ignore)
|
||
int ignore;
|
||
{
|
||
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 ();
|
||
}
|
||
|
||
static void
|
||
obj_coff_val (ignore)
|
||
int ignore;
|
||
{
|
||
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, (valueT) frag_now_fix ());
|
||
/* 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_value.X_op = O_symbol;
|
||
def_symbol_in_progress->sy_value.X_add_symbol =
|
||
symbol_find_or_make (symbol_name);
|
||
def_symbol_in_progress->sy_value.X_op_symbol = NULL;
|
||
def_symbol_in_progress->sy_value.X_add_number = 0;
|
||
|
||
/* If the segment is undefined when the forward reference is
|
||
resolved, 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 ();
|
||
}
|
||
|
||
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 ();
|
||
}
|
||
|
||
|
||
symbolS *coff_last_function;
|
||
|
||
void
|
||
coff_frob_symbol (symp, punt)
|
||
symbolS *symp;
|
||
int *punt;
|
||
{
|
||
static symbolS *last_tagP;
|
||
static stack *block_stack;
|
||
static symbolS *set_end;
|
||
|
||
if (symp == &abs_symbol)
|
||
{
|
||
*punt = 1;
|
||
return;
|
||
}
|
||
|
||
if (current_lineno_sym)
|
||
coff_add_linesym ((symbolS *) 0);
|
||
|
||
if (!block_stack)
|
||
block_stack = stack_init (512, sizeof (symbolS*));
|
||
|
||
if (!S_IS_DEFINED (symp) && S_GET_STORAGE_CLASS (symp) != C_STAT)
|
||
S_SET_STORAGE_CLASS (symp, C_EXT);
|
||
|
||
if (!SF_GET_DEBUG (symp))
|
||
{
|
||
symbolS *real;
|
||
if (!SF_GET_LOCAL (symp)
|
||
&& (real = symbol_find_base (S_GET_NAME (symp), DO_NOT_STRIP))
|
||
&& real != symp)
|
||
{
|
||
c_symbol_merge (symp, real);
|
||
*punt = 1;
|
||
}
|
||
if (!S_IS_DEFINED (symp) && !SF_GET_LOCAL (symp))
|
||
{
|
||
assert (S_GET_VALUE (symp) == 0);
|
||
S_SET_EXTERNAL (symp);
|
||
}
|
||
else if (S_GET_STORAGE_CLASS (symp) == C_NULL)
|
||
{
|
||
if (S_GET_SEGMENT (symp) == text_section
|
||
&& symp != seg_info (text_section)->sym)
|
||
S_SET_STORAGE_CLASS (symp, C_LABEL);
|
||
else
|
||
S_SET_STORAGE_CLASS (symp, C_STAT);
|
||
}
|
||
if (SF_GET_PROCESS (symp))
|
||
{
|
||
if (S_GET_STORAGE_CLASS (symp) == C_BLOCK)
|
||
{
|
||
if (!strcmp (S_GET_NAME (symp), ".bb"))
|
||
stack_push (block_stack, (char *) &symp);
|
||
else
|
||
{
|
||
symbolS *begin;
|
||
begin = *(symbolS **) stack_pop (block_stack);
|
||
if (begin == 0)
|
||
as_warn ("mismatched .eb");
|
||
else
|
||
set_end = begin;
|
||
}
|
||
}
|
||
if (coff_last_function == 0 && SF_GET_FUNCTION (symp))
|
||
{
|
||
union internal_auxent *auxp;
|
||
coff_last_function = symp;
|
||
if (S_GET_NUMBER_AUXILIARY (symp) < 1)
|
||
S_SET_NUMBER_AUXILIARY (symp, 1);
|
||
auxp = &coffsymbol (symp->bsym)->native[1].u.auxent;
|
||
memset (auxp->x_sym.x_fcnary.x_ary.x_dimen, 0,
|
||
sizeof (auxp->x_sym.x_fcnary.x_ary.x_dimen));
|
||
}
|
||
if (S_GET_STORAGE_CLASS (symp) == C_EFCN)
|
||
{
|
||
if (coff_last_function == 0)
|
||
as_fatal ("C_EFCN symbol out of scope");
|
||
SA_SET_SYM_FSIZE (coff_last_function,
|
||
(long) (S_GET_VALUE (symp)
|
||
- S_GET_VALUE (coff_last_function)));
|
||
set_end = coff_last_function;
|
||
coff_last_function = 0;
|
||
}
|
||
}
|
||
else if (SF_GET_TAG (symp))
|
||
last_tagP = symp;
|
||
else if (S_GET_STORAGE_CLASS (symp) == C_EOS)
|
||
set_end = last_tagP;
|
||
else if (S_GET_STORAGE_CLASS (symp) == C_FILE)
|
||
{
|
||
if (S_GET_VALUE (symp))
|
||
{
|
||
S_SET_VALUE ((symbolS *) S_GET_VALUE (symp), 0xdeadbeef);
|
||
S_SET_VALUE (symp, 0);
|
||
}
|
||
}
|
||
if (S_IS_EXTERNAL (symp))
|
||
S_SET_STORAGE_CLASS (symp, C_EXT);
|
||
else if (SF_GET_LOCAL (symp))
|
||
*punt = 1;
|
||
|
||
if (SF_GET_FUNCTION (symp))
|
||
symp->bsym->flags |= BSF_FUNCTION;
|
||
|
||
/* more ... */
|
||
}
|
||
|
||
if (set_end != (symbolS *) NULL
|
||
&& ! *punt)
|
||
{
|
||
SA_SET_SYM_ENDNDX (set_end, symp);
|
||
set_end = NULL;
|
||
}
|
||
|
||
if (coffsymbol (symp->bsym)->lineno)
|
||
{
|
||
int i;
|
||
struct line_no *lptr;
|
||
alent *l;
|
||
|
||
lptr = (struct line_no *) coffsymbol (symp->bsym)->lineno;
|
||
for (i = 0; lptr; lptr = lptr->next)
|
||
i++;
|
||
lptr = (struct line_no *) coffsymbol (symp->bsym)->lineno;
|
||
|
||
/* We need i entries for line numbers, plus 1 for the first
|
||
entry which BFD will override, plus 1 for the last zero
|
||
entry (a marker for BFD). */
|
||
l = (alent *) bfd_alloc_by_size_t (stdoutput, (i + 2) * sizeof (alent));
|
||
coffsymbol (symp->bsym)->lineno = l;
|
||
l[i + 1].line_number = 0;
|
||
l[i + 1].u.sym = NULL;
|
||
for (; i > 0; i--)
|
||
{
|
||
if (lptr->frag)
|
||
lptr->l.u.offset += lptr->frag->fr_address;
|
||
l[i] = lptr->l;
|
||
lptr = lptr->next;
|
||
}
|
||
}
|
||
}
|
||
|
||
void
|
||
coff_adjust_section_syms (abfd, sec, x)
|
||
bfd *abfd;
|
||
asection *sec;
|
||
PTR x;
|
||
{
|
||
symbolS *secsym;
|
||
segment_info_type *seginfo = seg_info (sec);
|
||
int nlnno, nrelocs = 0;
|
||
|
||
/* RS/6000 gas creates a .debug section manually in ppc_frob_file in
|
||
tc-ppc.c. Do not get confused by it. */
|
||
if (seginfo == NULL)
|
||
return;
|
||
|
||
if (!strcmp (sec->name, ".text"))
|
||
nlnno = n_line_nos;
|
||
else
|
||
nlnno = 0;
|
||
{
|
||
/* @@ Hope that none of the fixups expand to more than one reloc
|
||
entry... */
|
||
fixS *fixp = seginfo->fix_root;
|
||
while (fixp)
|
||
{
|
||
fixp = fixp->fx_next;
|
||
nrelocs++;
|
||
}
|
||
}
|
||
if (bfd_get_section_size_before_reloc (sec) == 0
|
||
&& nrelocs == 0 && nlnno == 0)
|
||
return;
|
||
secsym = section_symbol (sec);
|
||
SA_SET_SCN_NRELOC (secsym, nrelocs);
|
||
SA_SET_SCN_NLINNO (secsym, nlnno);
|
||
}
|
||
|
||
void
|
||
coff_frob_file ()
|
||
{
|
||
bfd_map_over_sections (stdoutput, coff_adjust_section_syms, (char*) 0);
|
||
}
|
||
|
||
/*
|
||
* implement the .section pseudo op:
|
||
* .section name {, "flags"}
|
||
* ^ ^
|
||
* | +--- optional flags: 'b' for bss
|
||
* | 'i' for info
|
||
* +-- section name 'l' for lib
|
||
* 'n' for noload
|
||
* 'o' for over
|
||
* 'w' for data
|
||
* 'd' (apparently m88k for data)
|
||
* 'x' for text
|
||
* But if the argument is not a quoted string, treat it as a
|
||
* subsegment number.
|
||
*/
|
||
|
||
void
|
||
obj_coff_section (ignore)
|
||
int ignore;
|
||
{
|
||
/* Strip out the section name */
|
||
char *section_name;
|
||
char c;
|
||
char *name;
|
||
unsigned int exp;
|
||
flagword flags;
|
||
asection *sec;
|
||
|
||
section_name = input_line_pointer;
|
||
c = get_symbol_end ();
|
||
|
||
name = xmalloc (input_line_pointer - section_name + 1);
|
||
strcpy (name, section_name);
|
||
|
||
*input_line_pointer = c;
|
||
|
||
SKIP_WHITESPACE ();
|
||
|
||
exp = 0;
|
||
flags = SEC_NO_FLAGS;
|
||
|
||
if (*input_line_pointer == ',')
|
||
{
|
||
++input_line_pointer;
|
||
SKIP_WHITESPACE ();
|
||
if (*input_line_pointer != '"')
|
||
exp = get_absolute_expression ();
|
||
else
|
||
{
|
||
++input_line_pointer;
|
||
while (*input_line_pointer != '"'
|
||
&& ! is_end_of_line[(unsigned char) *input_line_pointer])
|
||
{
|
||
switch (*input_line_pointer)
|
||
{
|
||
case 'b': flags |= SEC_ALLOC; flags &=~ SEC_LOAD; break;
|
||
case 'n': flags &=~ SEC_LOAD; break;
|
||
case 'd':
|
||
case 'w': flags &=~ SEC_READONLY; break;
|
||
case 'x': flags |= SEC_CODE; break;
|
||
|
||
case 'i': /* STYP_INFO */
|
||
case 'l': /* STYP_LIB */
|
||
case 'o': /* STYP_OVER */
|
||
as_warn ("unsupported section attribute '%c'",
|
||
*input_line_pointer);
|
||
break;
|
||
|
||
default:
|
||
as_warn("unknown section attribute '%c'",
|
||
*input_line_pointer);
|
||
break;
|
||
}
|
||
++input_line_pointer;
|
||
}
|
||
if (*input_line_pointer == '"')
|
||
++input_line_pointer;
|
||
}
|
||
}
|
||
|
||
sec = subseg_new (name, (subsegT) exp);
|
||
|
||
if (flags != SEC_NO_FLAGS)
|
||
{
|
||
if (! bfd_set_section_flags (stdoutput, sec, flags))
|
||
as_warn ("error setting flags for \"%s\": %s",
|
||
bfd_section_name (stdoutput, sec),
|
||
bfd_errmsg (bfd_get_error ()));
|
||
}
|
||
}
|
||
|
||
void
|
||
coff_adjust_symtab ()
|
||
{
|
||
if (symbol_rootP == NULL
|
||
|| S_GET_STORAGE_CLASS (symbol_rootP) != C_FILE)
|
||
{
|
||
assert (previous_file_symbol == 0);
|
||
c_dot_file_symbol ("fake");
|
||
}
|
||
}
|
||
|
||
void
|
||
coff_frob_section (sec)
|
||
segT sec;
|
||
{
|
||
segT strsec;
|
||
char *strname, *p;
|
||
fragS *fragp;
|
||
bfd_vma size, n_entries, mask;
|
||
|
||
/* The COFF back end in BFD requires that all section sizes be
|
||
rounded up to multiples of the corresponding section alignments.
|
||
Seems kinda silly to me, but that's the way it is. */
|
||
size = bfd_get_section_size_before_reloc (sec);
|
||
mask = ((bfd_vma) 1 << (bfd_vma) sec->alignment_power) - 1;
|
||
if (size & mask)
|
||
{
|
||
size = (size + mask) & ~mask;
|
||
bfd_set_section_size (stdoutput, sec, size);
|
||
}
|
||
|
||
/* If the section size is non-zero, the section symbol needs an aux
|
||
entry associated with it, indicating the size. We don't know
|
||
all the values yet; coff_frob_symbol will fill them in later. */
|
||
if (size)
|
||
{
|
||
symbolS *secsym = section_symbol (sec);
|
||
|
||
S_SET_STORAGE_CLASS (secsym, C_STAT);
|
||
S_SET_NUMBER_AUXILIARY (secsym, 1);
|
||
SF_SET_STATICS (secsym);
|
||
SA_SET_SCN_SCNLEN (secsym, size);
|
||
}
|
||
|
||
/* @@ these should be in a "stabs.h" file, or maybe as.h */
|
||
#ifndef STAB_SECTION_NAME
|
||
#define STAB_SECTION_NAME ".stab"
|
||
#endif
|
||
#ifndef STAB_STRING_SECTION_NAME
|
||
#define STAB_STRING_SECTION_NAME ".stabstr"
|
||
#endif
|
||
if (strcmp (STAB_STRING_SECTION_NAME, sec->name))
|
||
return;
|
||
|
||
strsec = sec;
|
||
sec = subseg_get (STAB_SECTION_NAME, 0);
|
||
/* size is already rounded up, since other section will be listed first */
|
||
size = bfd_get_section_size_before_reloc (strsec);
|
||
|
||
n_entries = bfd_get_section_size_before_reloc (sec) / 12 - 1;
|
||
|
||
/* Find first non-empty frag. It should be large enough. */
|
||
fragp = seg_info (sec)->frchainP->frch_root;
|
||
while (fragp && fragp->fr_fix == 0)
|
||
fragp = fragp->fr_next;
|
||
assert (fragp != 0 && fragp->fr_fix >= 12);
|
||
|
||
/* Store the values. */
|
||
p = fragp->fr_literal;
|
||
bfd_h_put_16 (stdoutput, n_entries, (bfd_byte *) p + 6);
|
||
bfd_h_put_32 (stdoutput, size, (bfd_byte *) p + 8);
|
||
}
|
||
|
||
void
|
||
obj_coff_init_stab_section (seg)
|
||
segT seg;
|
||
{
|
||
char *file;
|
||
char *p;
|
||
char *stabstr_name;
|
||
unsigned int stroff;
|
||
|
||
/* Make space for this first symbol. */
|
||
p = frag_more (12);
|
||
/* Zero it out. */
|
||
memset (p, 0, 12);
|
||
as_where (&file, (unsigned int *) NULL);
|
||
stabstr_name = (char *) alloca (strlen (seg->name) + 4);
|
||
strcpy (stabstr_name, seg->name);
|
||
strcat (stabstr_name, "str");
|
||
stroff = get_stab_string_offset (file, stabstr_name);
|
||
know (stroff == 1);
|
||
md_number_to_chars (p, stroff, 4);
|
||
}
|
||
|
||
#ifdef DEBUG
|
||
/* for debugging */
|
||
const char *
|
||
s_get_name (s)
|
||
symbolS *s;
|
||
{
|
||
return ((s == NULL) ? "(NULL)" : S_GET_NAME (s));
|
||
}
|
||
|
||
void
|
||
symbol_dump ()
|
||
{
|
||
symbolS *symbolP;
|
||
|
||
for (symbolP = symbol_rootP; symbolP; symbolP = symbol_next (symbolP))
|
||
{
|
||
printf("0x%lx: \"%s\" type = %ld, class = %d, segment = %d\n",
|
||
(unsigned long) symbolP,
|
||
S_GET_NAME(symbolP),
|
||
(long) S_GET_DATA_TYPE(symbolP),
|
||
S_GET_STORAGE_CLASS(symbolP),
|
||
(int) S_GET_SEGMENT(symbolP));
|
||
}
|
||
}
|
||
|
||
#endif /* DEBUG */
|
||
|
||
#else /* not BFD_ASSEMBLER */
|
||
|
||
#include "frags.h"
|
||
/* This is needed because we include internal bfd things. */
|
||
#include <time.h>
|
||
|
||
#include "libbfd.h"
|
||
#include "libcoff.h"
|
||
|
||
/* The NOP_OPCODE is for the alignment fill value. Fill with nop so
|
||
that we can stick sections together without causing trouble. */
|
||
#ifndef NOP_OPCODE
|
||
#define NOP_OPCODE 0x00
|
||
#endif
|
||
|
||
/* The zeroes if symbol name is longer than 8 chars */
|
||
#define S_SET_ZEROES(s,v) ((s)->sy_symbol.ost_entry.n_zeroes = (v))
|
||
|
||
#define MIN(a,b) ((a) < (b)? (a) : (b))
|
||
/* 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_GOOF */
|
||
C_UNDEF_SECTION, /* SEG_EXPR */
|
||
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) */
|
||
|
||
static symbolS *last_line_symbol;
|
||
|
||
/* 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;
|
||
void c_symbol_merge ();
|
||
static int line_base;
|
||
|
||
symbolS *c_section_symbol ();
|
||
bfd *abfd;
|
||
|
||
static void fixup_segment PARAMS ((segment_info_type *segP,
|
||
segT this_segment_type));
|
||
|
||
|
||
static void fixup_mdeps PARAMS ((fragS *,
|
||
object_headers *,
|
||
segT));
|
||
|
||
|
||
static void fill_section PARAMS ((bfd * abfd,
|
||
object_headers *,
|
||
unsigned long *));
|
||
|
||
|
||
static int c_line_new PARAMS ((symbolS * symbol, long paddr,
|
||
int line_number,
|
||
fragS * frag));
|
||
|
||
|
||
static void w_symbols PARAMS ((bfd * abfd, char *where,
|
||
symbolS * symbol_rootP));
|
||
|
||
static void adjust_stab_section PARAMS ((bfd *abfd, segT seg));
|
||
|
||
static void obj_coff_lcomm PARAMS ((int));
|
||
static void obj_coff_text PARAMS ((int));
|
||
static void obj_coff_data PARAMS ((int));
|
||
static void obj_coff_bss PARAMS ((int));
|
||
static void obj_coff_ident PARAMS ((int));
|
||
void obj_coff_section PARAMS ((int));
|
||
|
||
/* 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:
|
||
|
||
*/
|
||
|
||
#define N_SEG 32
|
||
typedef struct
|
||
{
|
||
segT seg_t;
|
||
int i;
|
||
} seg_info_type;
|
||
|
||
static const 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},
|
||
{(segT)15},
|
||
{(segT)16},
|
||
{(segT)17},
|
||
{(segT)18},
|
||
{(segT)19},
|
||
{(segT)20},
|
||
{(segT)0},
|
||
{(segT)0},
|
||
{(segT)0},
|
||
{SEG_REGISTER}
|
||
};
|
||
|
||
|
||
|
||
#define SEG_INFO_FROM_SECTION_NUMBER(x) (seg_info_off_by_4[(x)+4])
|
||
|
||
static relax_addressT
|
||
relax_align (address, alignment)
|
||
relax_addressT address;
|
||
long alignment;
|
||
{
|
||
relax_addressT mask;
|
||
relax_addressT new_address;
|
||
|
||
mask = ~((~0) << alignment);
|
||
new_address = (address + mask) & (~mask);
|
||
return (new_address - address);
|
||
}
|
||
|
||
|
||
segT
|
||
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
|
||
size_section (abfd, idx)
|
||
bfd * abfd;
|
||
unsigned int idx;
|
||
{
|
||
|
||
unsigned int size = 0;
|
||
fragS *frag = segment_info[idx].frchainP->frch_root;
|
||
while (frag)
|
||
{
|
||
size = frag->fr_address;
|
||
if (frag->fr_address != size)
|
||
{
|
||
fprintf (stderr, "Out of step\n");
|
||
size = frag->fr_address;
|
||
}
|
||
|
||
switch (frag->fr_type)
|
||
{
|
||
#ifdef TC_COFF_SIZEMACHDEP
|
||
case rs_machine_dependent:
|
||
size += TC_COFF_SIZEMACHDEP (frag);
|
||
break;
|
||
#endif
|
||
case rs_space:
|
||
assert (frag->fr_symbol == 0);
|
||
case rs_fill:
|
||
case rs_org:
|
||
size += frag->fr_fix;
|
||
size += frag->fr_offset * frag->fr_var;
|
||
break;
|
||
case rs_align:
|
||
size += frag->fr_fix;
|
||
size += relax_align (size, frag->fr_offset);
|
||
break;
|
||
default:
|
||
BAD_CASE (frag->fr_type);
|
||
break;
|
||
}
|
||
frag = frag->fr_next;
|
||
}
|
||
segment_info[idx].scnhdr.s_size = size;
|
||
return size;
|
||
}
|
||
|
||
|
||
static unsigned int
|
||
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
|
||
do_relocs_for (abfd, h, file_cursor)
|
||
bfd * abfd;
|
||
object_headers * h;
|
||
unsigned long *file_cursor;
|
||
{
|
||
unsigned int nrelocs;
|
||
unsigned int idx;
|
||
unsigned long reloc_start = *file_cursor;
|
||
|
||
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 base = segment_info[idx].scnhdr.s_paddr;
|
||
fixS *fix_ptr = segment_info[idx].fix_root;
|
||
nrelocs = count_entries_in_chain (idx);
|
||
|
||
if (nrelocs)
|
||
/* Bypass this stuff if no relocs. This also incidentally
|
||
avoids a SCO bug, where free(malloc(0)) tends to crash. */
|
||
{
|
||
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)
|
||
{
|
||
struct internal_reloc intr;
|
||
|
||
/* Only output some of the relocations */
|
||
if (TC_COUNT_RELOC (fix_ptr))
|
||
{
|
||
#ifdef TC_RELOC_MANGLE
|
||
TC_RELOC_MANGLE (&segment_info[idx], fix_ptr, &intr,
|
||
base);
|
||
|
||
#else
|
||
symbolS *dot;
|
||
symbolS *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;
|
||
|
||
#ifdef TC_KEEP_FX_OFFSET
|
||
intr.r_offset = fix_ptr->fx_offset;
|
||
#else
|
||
intr.r_offset = 0;
|
||
#endif
|
||
|
||
/* Turn the segment of the symbol into an offset. */
|
||
if (symbol_ptr)
|
||
{
|
||
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;
|
||
}
|
||
|
||
}
|
||
else
|
||
{
|
||
intr.r_symndx = -1;
|
||
}
|
||
#endif
|
||
|
||
(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 emited, 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 */
|
||
bfd_write ((PTR) external_reloc_vec, 1, external_reloc_size,
|
||
abfd);
|
||
free (external_reloc_vec);
|
||
|
||
/* Fill in section header info. */
|
||
segment_info[idx].scnhdr.s_relptr = *file_cursor;
|
||
*file_cursor += external_reloc_size;
|
||
segment_info[idx].scnhdr.s_nreloc = nrelocs;
|
||
}
|
||
else
|
||
{
|
||
/* No relocs */
|
||
segment_info[idx].scnhdr.s_relptr = 0;
|
||
}
|
||
}
|
||
}
|
||
/* Set relocation_size field in file headers */
|
||
H_SET_RELOCATION_SIZE (h, *file_cursor - reloc_start, 0);
|
||
}
|
||
|
||
|
||
/* 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
|
||
fill_section (abfd, h, file_cursor)
|
||
bfd * abfd;
|
||
object_headers *h;
|
||
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);
|
||
|
||
PROGRESS (1);
|
||
|
||
if (s->s_name[0])
|
||
{
|
||
fragS *frag = segment_info[i].frchainP->frch_root;
|
||
char *buffer;
|
||
|
||
if (s->s_size == 0)
|
||
s->s_scnptr = 0;
|
||
else
|
||
{
|
||
buffer = xmalloc (s->s_size);
|
||
s->s_scnptr = *file_cursor;
|
||
}
|
||
know (s->s_paddr == paddr);
|
||
|
||
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_scnptr = 0;
|
||
s->s_flags |= STYP_BSS;
|
||
|
||
/* @@ Should make the i386 and a29k coff targets define
|
||
COFF_NOLOAD_PROBLEM, and have only one test here. */
|
||
#ifndef TC_I386
|
||
#ifndef TC_A29K
|
||
#ifndef COFF_NOLOAD_PROBLEM
|
||
/* Apparently the SVR3 linker (and exec syscall) and UDI
|
||
mondfe progrem are confused by noload sections. */
|
||
s->s_flags |= STYP_NOLOAD;
|
||
#endif
|
||
#endif
|
||
#endif
|
||
}
|
||
else if (strcmp (s->s_name, ".lit") == 0)
|
||
s->s_flags = STYP_LIT | STYP_TEXT;
|
||
else if (strcmp (s->s_name, ".init") == 0)
|
||
s->s_flags |= STYP_TEXT;
|
||
else if (strcmp (s->s_name, ".fini") == 0)
|
||
s->s_flags |= STYP_TEXT;
|
||
else if (strncmp (s->s_name, ".comment", 8) == 0)
|
||
s->s_flags |= STYP_INFO;
|
||
|
||
while (frag)
|
||
{
|
||
unsigned int fill_size;
|
||
switch (frag->fr_type)
|
||
{
|
||
case rs_machine_dependent:
|
||
if (frag->fr_fix)
|
||
{
|
||
memcpy (buffer + frag->fr_address,
|
||
frag->fr_literal,
|
||
(unsigned int) frag->fr_fix);
|
||
offset += frag->fr_fix;
|
||
}
|
||
|
||
break;
|
||
case rs_space:
|
||
assert (frag->fr_symbol == 0);
|
||
case rs_fill:
|
||
case rs_align:
|
||
case rs_org:
|
||
if (frag->fr_fix)
|
||
{
|
||
memcpy (buffer + frag->fr_address,
|
||
frag->fr_literal,
|
||
(unsigned int) frag->fr_fix);
|
||
offset += frag->fr_fix;
|
||
}
|
||
|
||
fill_size = frag->fr_var;
|
||
if (fill_size && frag->fr_offset > 0)
|
||
{
|
||
unsigned int count;
|
||
unsigned int off = frag->fr_fix;
|
||
for (count = frag->fr_offset; count; count--)
|
||
{
|
||
if (fill_size + frag->fr_address + off <= s->s_size)
|
||
{
|
||
memcpy (buffer + frag->fr_address + off,
|
||
frag->fr_literal + frag->fr_fix,
|
||
fill_size);
|
||
off += fill_size;
|
||
offset += fill_size;
|
||
}
|
||
}
|
||
}
|
||
break;
|
||
case rs_broken_word:
|
||
break;
|
||
default:
|
||
abort ();
|
||
}
|
||
frag = frag->fr_next;
|
||
}
|
||
|
||
if (s->s_size != 0)
|
||
{
|
||
if (s->s_scnptr != 0)
|
||
{
|
||
bfd_write (buffer, s->s_size, 1, abfd);
|
||
*file_cursor += s->s_size;
|
||
}
|
||
free (buffer);
|
||
}
|
||
paddr += s->s_size;
|
||
}
|
||
}
|
||
}
|
||
|
||
/* Coff file generation & utilities */
|
||
|
||
static void
|
||
coff_header_append (abfd, h)
|
||
bfd * abfd;
|
||
object_headers * h;
|
||
{
|
||
unsigned int i;
|
||
char buffer[1000];
|
||
char buffero[1000];
|
||
|
||
bfd_seek (abfd, 0, 0);
|
||
|
||
#ifndef OBJ_COFF_OMIT_OPTIONAL_HEADER
|
||
H_SET_MAGIC_NUMBER (h, COFF_MAGIC);
|
||
H_SET_VERSION_STAMP (h, 0);
|
||
H_SET_ENTRY_POINT (h, 0);
|
||
H_SET_TEXT_START (h, segment_info[SEG_E0].frchainP->frch_root->fr_address);
|
||
H_SET_DATA_START (h, segment_info[SEG_E1].frchainP->frch_root->fr_address);
|
||
H_SET_SIZEOF_OPTIONAL_HEADER (h, bfd_coff_swap_aouthdr_out(abfd, &h->aouthdr,
|
||
buffero));
|
||
#else /* defined (OBJ_COFF_OMIT_OPTIONAL_HEADER) */
|
||
H_SET_SIZEOF_OPTIONAL_HEADER (h, 0);
|
||
#endif /* defined (OBJ_COFF_OMIT_OPTIONAL_HEADER) */
|
||
|
||
i = bfd_coff_swap_filehdr_out (abfd, &h->filehdr, buffer);
|
||
|
||
bfd_write (buffer, i, 1, abfd);
|
||
bfd_write (buffero, H_GET_SIZEOF_OPTIONAL_HEADER (h), 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);
|
||
if (size == 0)
|
||
as_bad ("bfd_coff_swap_scnhdr_out failed");
|
||
bfd_write (buffer, size, 1, abfd);
|
||
}
|
||
}
|
||
}
|
||
|
||
|
||
char *
|
||
symbol_to_chars (abfd, where, symbolP)
|
||
bfd * abfd;
|
||
char *where;
|
||
symbolS * symbolP;
|
||
{
|
||
unsigned int numaux = symbolP->sy_symbol.ost_entry.n_numaux;
|
||
unsigned int i;
|
||
valueT val;
|
||
|
||
/* Turn any symbols with register attributes into abs symbols */
|
||
if (S_GET_SEGMENT (symbolP) == reg_section)
|
||
{
|
||
S_SET_SEGMENT (symbolP, absolute_section);
|
||
}
|
||
/* At the same time, relocate all symbols to their output value */
|
||
|
||
val = (segment_info[S_GET_SEGMENT (symbolP)].scnhdr.s_paddr
|
||
+ S_GET_VALUE (symbolP));
|
||
|
||
S_SET_VALUE (symbolP, val);
|
||
|
||
symbolP->sy_symbol.ost_entry.n_value = val;
|
||
|
||
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),
|
||
i, numaux, 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 */
|
||
memset ((char *) &symbolP->sy_symbol.ost_auxent[0], 0, AUXESZ);
|
||
|
||
if (S_IS_STRING (symbolP))
|
||
SF_SET_STRING (symbolP);
|
||
if (!underscore && S_IS_LOCAL (symbolP))
|
||
SF_SET_LOCAL (symbolP);
|
||
}
|
||
|
||
/*
|
||
* Handle .ln directives.
|
||
*/
|
||
|
||
static void
|
||
obj_coff_ln (appline)
|
||
int appline;
|
||
{
|
||
int l;
|
||
|
||
if (! appline && def_symbol_in_progress != NULL)
|
||
{
|
||
as_warn (".ln pseudo-op inside .def/.endef: ignored.");
|
||
demand_empty_rest_of_line ();
|
||
return;
|
||
} /* wrong context */
|
||
|
||
l = get_absolute_expression ();
|
||
c_line_new (0, frag_now_fix (), l, frag_now);
|
||
#ifndef NO_LISTING
|
||
{
|
||
extern int listing;
|
||
|
||
if (listing)
|
||
{
|
||
if (! appline)
|
||
l += line_base - 1;
|
||
listing_source_line ((unsigned int) l);
|
||
}
|
||
|
||
}
|
||
#endif
|
||
demand_empty_rest_of_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;
|
||
|
||
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));
|
||
memset (def_symbol_in_progress, 0, 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 = (unsigned long) ~0;
|
||
def_symbol_in_progress->sy_number = ~0;
|
||
def_symbol_in_progress->sy_frag = &zero_address_frag;
|
||
S_SET_VALUE (def_symbol_in_progress, 0);
|
||
|
||
if (S_IS_STRING (def_symbol_in_progress))
|
||
SF_SET_STRING (def_symbol_in_progress);
|
||
|
||
*input_line_pointer = name_end;
|
||
|
||
demand_empty_rest_of_line ();
|
||
}
|
||
|
||
unsigned int dim_index;
|
||
|
||
|
||
static void
|
||
obj_coff_endef (ignore)
|
||
int ignore;
|
||
{
|
||
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 (strcmp (S_GET_NAME (def_symbol_in_progress), ".bf") == 0)
|
||
{ /* .bf */
|
||
if (function_lineoff < 0)
|
||
{
|
||
fprintf (stderr, "`.bf' symbol without preceding function\n");
|
||
} /* missing function symbol */
|
||
SA_GET_SYM_LNNOPTR (last_line_symbol) = function_lineoff;
|
||
|
||
SF_SET_PROCESS (last_line_symbol);
|
||
function_lineoff = -1;
|
||
}
|
||
/* Value is always set to . */
|
||
def_symbol_in_progress->sy_frag = frag_now;
|
||
S_SET_VALUE (def_symbol_in_progress, (valueT) frag_now_fix ());
|
||
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, absolute_section);
|
||
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
|
||
absolute_section or untagged SEG_DEBUG it never merges. We also
|
||
don't merge labels, which are in a different namespace, nor
|
||
symbols which have not yet been defined since they are typically
|
||
unique, nor do we merge tags with non-tags. */
|
||
|
||
/* 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_STORAGE_CLASS (def_symbol_in_progress) == C_LABEL
|
||
|| (S_GET_SEGMENT (def_symbol_in_progress) == SEG_DEBUG
|
||
&& !SF_GET_TAG (def_symbol_in_progress))
|
||
|| S_GET_SEGMENT (def_symbol_in_progress) == absolute_section
|
||
|| def_symbol_in_progress->sy_value.X_op != O_constant
|
||
|| (symbolP = symbol_find_base (S_GET_NAME (def_symbol_in_progress), DO_NOT_STRIP)) == NULL
|
||
|| (SF_GET_TAG (def_symbol_in_progress) != SF_GET_TAG (symbolP)))
|
||
{
|
||
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 (SF_GET_FUNCTION (def_symbol_in_progress))
|
||
{
|
||
know (sizeof (def_symbol_in_progress) <= sizeof (long));
|
||
function_lineoff
|
||
= c_line_new (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 ();
|
||
}
|
||
|
||
static void
|
||
obj_coff_dim (ignore)
|
||
int ignore;
|
||
{
|
||
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;
|
||
}
|
||
}
|
||
|
||
demand_empty_rest_of_line ();
|
||
}
|
||
|
||
static void
|
||
obj_coff_line (ignore)
|
||
int ignore;
|
||
{
|
||
int this_base;
|
||
const char *name;
|
||
|
||
if (def_symbol_in_progress == NULL)
|
||
{
|
||
obj_coff_ln (0);
|
||
return;
|
||
}
|
||
|
||
name = S_GET_NAME (def_symbol_in_progress);
|
||
this_base = get_absolute_expression ();
|
||
|
||
/* Only .bf symbols indicate the use of a new base line number; the
|
||
line numbers associated with .ef, .bb, .eb are relative to the
|
||
start of the containing function. */
|
||
if (!strcmp (".bf", name))
|
||
{
|
||
#if 0 /* XXX Can we ever have line numbers going backwards? */
|
||
if (this_base > line_base)
|
||
#endif
|
||
{
|
||
line_base = this_base;
|
||
}
|
||
|
||
#ifndef NO_LISTING
|
||
{
|
||
extern int listing;
|
||
if (listing)
|
||
{
|
||
listing_source_line ((unsigned int) line_base);
|
||
}
|
||
}
|
||
#endif
|
||
}
|
||
|
||
S_SET_NUMBER_AUXILIARY (def_symbol_in_progress, 1);
|
||
SA_SET_SYM_LNNO (def_symbol_in_progress, this_base);
|
||
|
||
demand_empty_rest_of_line ();
|
||
}
|
||
|
||
static void
|
||
obj_coff_size (ignore)
|
||
int ignore;
|
||
{
|
||
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 ();
|
||
}
|
||
|
||
static void
|
||
obj_coff_scl (ignore)
|
||
int ignore;
|
||
{
|
||
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 ();
|
||
}
|
||
|
||
static void
|
||
obj_coff_tag (ignore)
|
||
int ignore;
|
||
{
|
||
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;
|
||
}
|
||
|
||
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 ();
|
||
}
|
||
|
||
static void
|
||
obj_coff_type (ignore)
|
||
int ignore;
|
||
{
|
||
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 ();
|
||
}
|
||
|
||
static void
|
||
obj_coff_val (ignore)
|
||
int ignore;
|
||
{
|
||
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, (valueT) frag_now_fix ());
|
||
/* 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_value.X_op = O_symbol;
|
||
def_symbol_in_progress->sy_value.X_add_symbol =
|
||
symbol_find_or_make (symbol_name);
|
||
def_symbol_in_progress->sy_value.X_op_symbol = NULL;
|
||
def_symbol_in_progress->sy_value.X_add_number = 0;
|
||
|
||
/* If the segment is undefined when the forward reference is
|
||
resolved, then copy the segment id from the forward
|
||
symbol. */
|
||
SF_SET_GET_SEGMENT (def_symbol_in_progress);
|
||
|
||
/* FIXME: gcc can generate address expressions
|
||
here in unusual cases (search for "obscure"
|
||
in sdbout.c). We just ignore the offset
|
||
here, thus generating incorrect debugging
|
||
information. We ignore the rest of the
|
||
line just below. */
|
||
}
|
||
/* Otherwise, it is the name of a non debug symbol and
|
||
its value will be calculated later. */
|
||
*input_line_pointer = name_end;
|
||
|
||
/* FIXME: this is to avoid an error message in the
|
||
FIXME case mentioned just above. */
|
||
while (! is_end_of_line[(unsigned char) *input_line_pointer])
|
||
++input_line_pointer;
|
||
}
|
||
else
|
||
{
|
||
S_SET_VALUE (def_symbol_in_progress,
|
||
(valueT) get_absolute_expression ());
|
||
} /* if symbol based */
|
||
|
||
demand_empty_rest_of_line ();
|
||
}
|
||
|
||
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 ();
|
||
}
|
||
|
||
/* This function runs through the symbol table and puts all the
|
||
externals onto another chain */
|
||
|
||
/* The chain of globals. */
|
||
symbolS *symbol_globalP;
|
||
symbolS *symbol_global_lastP;
|
||
|
||
/* The chain of externals */
|
||
symbolS *symbol_externP;
|
||
symbolS *symbol_extern_lastP;
|
||
|
||
stack *block_stack;
|
||
symbolS *last_functionP;
|
||
symbolS *last_tagP;
|
||
|
||
static unsigned int
|
||
yank_symbols ()
|
||
{
|
||
symbolS *symbolP;
|
||
unsigned int symbol_number = 0;
|
||
unsigned int last_file_symno = 0;
|
||
|
||
struct filename_list *filename_list_scan = filename_list_head;
|
||
|
||
for (symbolP = symbol_rootP;
|
||
symbolP;
|
||
symbolP = symbolP ? symbol_next (symbolP) : symbol_rootP)
|
||
{
|
||
if (symbolP->sy_mri_common)
|
||
{
|
||
if (S_GET_STORAGE_CLASS (symbolP) == C_EXT)
|
||
as_bad ("%s: global symbols not supported in common sections",
|
||
S_GET_NAME (symbolP));
|
||
symbol_remove (symbolP, &symbol_rootP, &symbol_lastP);
|
||
continue;
|
||
}
|
||
|
||
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)
|
||
&& S_GET_STORAGE_CLASS (symbolP) != C_LABEL
|
||
&& symbolP->sy_value.X_op == O_constant
|
||
&& (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 (flag_readonly_data_in_text && (S_GET_SEGMENT (symbolP) == SEG_E1))
|
||
{
|
||
S_SET_SEGMENT (symbolP, SEG_E0);
|
||
} /* push data into text */
|
||
|
||
resolve_symbol_value (symbolP);
|
||
|
||
if (S_GET_STORAGE_CLASS (symbolP) == C_NULL)
|
||
{
|
||
if (!S_IS_DEFINED (symbolP) && !SF_GET_LOCAL (symbolP))
|
||
{
|
||
S_SET_EXTERNAL (symbolP);
|
||
}
|
||
else 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. */
|
||
#if 0
|
||
/* Iffed out by steve - this fries the lnnoptr info too */
|
||
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));
|
||
#endif
|
||
}
|
||
/* 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 the filename was too long to fit in the
|
||
auxent, put it in the string table */
|
||
if (SA_GET_FILE_FNAME_ZEROS (symbolP) == 0)
|
||
{
|
||
SA_SET_FILE_FNAME_OFFSET (symbolP, string_byte_count);
|
||
string_byte_count += strlen (filename_list_scan->filename) + 1;
|
||
filename_list_scan = filename_list_scan->next;
|
||
}
|
||
if (S_GET_VALUE (symbolP))
|
||
{
|
||
S_SET_VALUE (symbolP, last_file_symno);
|
||
last_file_symno = symbol_number;
|
||
} /* 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 (! S_IS_DEBUG (symbolP)
|
||
&& ! SF_GET_STATICS (symbolP)
|
||
&& ! SF_GET_FUNCTION (symbolP)
|
||
&& S_GET_STORAGE_CLASS (symbolP) == C_EXT)
|
||
{
|
||
symbolS *hold = symbol_previous (symbolP);
|
||
|
||
/* The O'Reilly COFF book says that defined global symbols
|
||
come at the end of the symbol table, just before
|
||
undefined global symbols. */
|
||
|
||
symbol_remove (symbolP, &symbol_rootP, &symbol_lastP);
|
||
symbol_clear_list_pointers (symbolP);
|
||
symbol_append (symbolP, symbol_global_lastP, &symbol_globalP,
|
||
&symbol_global_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
|
||
glue_symbols (head, tail)
|
||
symbolS **head;
|
||
symbolS **tail;
|
||
{
|
||
unsigned int symbol_number = 0;
|
||
symbolS *symbolP;
|
||
|
||
for (symbolP = *head; *head != NULL;)
|
||
{
|
||
symbolS *tmp = *head;
|
||
|
||
/* append */
|
||
symbol_remove (tmp, head, tail);
|
||
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
|
||
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
|
||
crawl_symbols (h, abfd)
|
||
object_headers *h;
|
||
bfd * abfd;
|
||
{
|
||
unsigned int i;
|
||
|
||
/* Initialize the stack used to keep track of the matching .bb .be */
|
||
|
||
block_stack = stack_init (512, sizeof (symbolS *));
|
||
|
||
/* 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])
|
||
{
|
||
char name[9];
|
||
|
||
strncpy (name, segment_info[i].scnhdr.s_name, 8);
|
||
name[8] = '\0';
|
||
segment_info[i].dot = c_section_symbol (name, i - SEG_E0 + 1);
|
||
}
|
||
}
|
||
|
||
|
||
/* Take all the externals out and put them into another chain */
|
||
H_SET_SYMBOL_TABLE_SIZE (h, yank_symbols ());
|
||
/* Take the externals and glue them onto the end.*/
|
||
H_SET_SYMBOL_TABLE_SIZE (h,
|
||
(H_GET_SYMBOL_COUNT (h)
|
||
+ glue_symbols (&symbol_globalP,
|
||
&symbol_global_lastP)
|
||
+ glue_symbols (&symbol_externP,
|
||
&symbol_extern_lastP)));
|
||
|
||
H_SET_SYMBOL_TABLE_SIZE (h, tie_tags ());
|
||
know (symbol_globalP == NULL);
|
||
know (symbol_global_lastP == NULL);
|
||
know (symbol_externP == NULL);
|
||
know (symbol_extern_lastP == NULL);
|
||
}
|
||
|
||
/*
|
||
* Find strings by crawling along symbol table chain.
|
||
*/
|
||
|
||
void
|
||
w_strings (where)
|
||
char *where;
|
||
{
|
||
symbolS *symbolP;
|
||
struct filename_list *filename_list_scan = filename_list_head;
|
||
|
||
/* Gotta do md_ byte-ordering stuff for string_byte_count first - KWK */
|
||
md_number_to_chars (where, (valueT) string_byte_count, 4);
|
||
where += 4;
|
||
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;
|
||
}
|
||
if (S_GET_STORAGE_CLASS (symbolP) == C_FILE
|
||
&& SA_GET_FILE_FNAME_ZEROS (symbolP) == 0)
|
||
{
|
||
size = strlen (filename_list_scan->filename) + 1;
|
||
memcpy (where, filename_list_scan->filename, size);
|
||
filename_list_scan = filename_list_scan ->next;
|
||
where += size;
|
||
}
|
||
}
|
||
}
|
||
|
||
static void
|
||
do_linenos_for (abfd, h, file_cursor)
|
||
bfd * abfd;
|
||
object_headers * h;
|
||
unsigned long *file_cursor;
|
||
{
|
||
unsigned int idx;
|
||
unsigned long start = *file_cursor;
|
||
|
||
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, take this chance to remove duplicates */
|
||
|
||
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;
|
||
}
|
||
else
|
||
{
|
||
line_ptr->line.l_addr.l_paddr += ((struct frag *) (line_ptr->frag))->fr_address;
|
||
}
|
||
|
||
|
||
(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;
|
||
}
|
||
}
|
||
H_SET_LINENO_SIZE (h, *file_cursor - start);
|
||
}
|
||
|
||
|
||
/* 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
|
||
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;
|
||
}
|
||
}
|
||
|
||
unsigned long machine;
|
||
int coff_flags;
|
||
extern void
|
||
write_object_file ()
|
||
{
|
||
int i;
|
||
char *name;
|
||
struct frchain *frchain_ptr;
|
||
|
||
object_headers headers;
|
||
unsigned long file_cursor;
|
||
bfd *abfd;
|
||
unsigned int addr;
|
||
abfd = bfd_openw (out_file_name, TARGET_FORMAT);
|
||
|
||
|
||
if (abfd == 0)
|
||
{
|
||
as_perror ("FATAL: Can't create %s", out_file_name);
|
||
exit (EXIT_FAILURE);
|
||
}
|
||
bfd_set_format (abfd, bfd_object);
|
||
bfd_set_arch_mach (abfd, BFD_ARCH, machine);
|
||
|
||
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_set (frchain_ptr->frch_seg, frchain_ptr->frch_subseg);
|
||
#ifndef SUB_SEGMENT_ALIGN
|
||
#define SUB_SEGMENT_ALIGN(SEG) 1
|
||
#endif
|
||
frag_align (SUB_SEGMENT_ALIGN (now_seg), NOP_OPCODE);
|
||
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);
|
||
}
|
||
|
||
H_SET_NUMBER_OF_SECTIONS (&headers, 0);
|
||
|
||
/* Find out how big the sections are, and set the addresses. */
|
||
addr = 0;
|
||
for (i = SEG_E0; i < SEG_UNKNOWN; i++)
|
||
{
|
||
long size;
|
||
|
||
segment_info[i].scnhdr.s_paddr = addr;
|
||
segment_info[i].scnhdr.s_vaddr = addr;
|
||
|
||
if (segment_info[i].scnhdr.s_name[0])
|
||
{
|
||
H_SET_NUMBER_OF_SECTIONS (&headers,
|
||
H_GET_NUMBER_OF_SECTIONS (&headers) + 1);
|
||
}
|
||
|
||
size = size_section (abfd, (unsigned int) i);
|
||
addr += size;
|
||
|
||
/* I think the section alignment is only used on the i960; the
|
||
i960 needs it, and it should do no harm on other targets. */
|
||
segment_info[i].scnhdr.s_align = section_alignment[i];
|
||
|
||
if (i == SEG_E0)
|
||
H_SET_TEXT_SIZE (&headers, size);
|
||
else if (i == SEG_E1)
|
||
H_SET_DATA_SIZE (&headers, size);
|
||
else if (i == SEG_E2)
|
||
H_SET_BSS_SIZE (&headers, size);
|
||
}
|
||
|
||
/* Turn the gas native symbol table shape into a coff symbol table */
|
||
crawl_symbols (&headers, abfd);
|
||
|
||
if (string_byte_count == 4)
|
||
string_byte_count = 0;
|
||
|
||
H_SET_STRING_SIZE (&headers, string_byte_count);
|
||
|
||
#ifdef tc_frob_file
|
||
tc_frob_file ();
|
||
#endif
|
||
|
||
for (i = SEG_E0; i < SEG_UNKNOWN; i++)
|
||
{
|
||
fixup_mdeps (segment_info[i].frchainP->frch_root, &headers, i);
|
||
fixup_segment (&segment_info[i], i);
|
||
}
|
||
|
||
/* Look for ".stab" segments and fill in their initial symbols
|
||
correctly. */
|
||
for (i = SEG_E0; i < SEG_UNKNOWN; i++)
|
||
{
|
||
name = segment_info[i].scnhdr.s_name;
|
||
|
||
if (name != NULL
|
||
&& strncmp (".stab", name, 5) == 0
|
||
&& strncmp (".stabstr", name, 8) != 0)
|
||
adjust_stab_section (abfd, i);
|
||
}
|
||
|
||
file_cursor = H_GET_TEXT_FILE_OFFSET (&headers);
|
||
|
||
bfd_seek (abfd, (file_ptr) file_cursor, 0);
|
||
|
||
/* Plant the data */
|
||
|
||
fill_section (abfd, &headers, &file_cursor);
|
||
|
||
do_relocs_for (abfd, &headers, &file_cursor);
|
||
|
||
do_linenos_for (abfd, &headers, &file_cursor);
|
||
|
||
H_SET_FILE_MAGIC_NUMBER (&headers, COFF_MAGIC);
|
||
#ifndef OBJ_COFF_OMIT_TIMESTAMP
|
||
H_SET_TIME_STAMP (&headers, (long)time((time_t *)0));
|
||
#else
|
||
H_SET_TIME_STAMP (&headers, 0);
|
||
#endif
|
||
#ifdef TC_COFF_SET_MACHINE
|
||
TC_COFF_SET_MACHINE (&headers);
|
||
#endif
|
||
|
||
#ifndef COFF_FLAGS
|
||
#define COFF_FLAGS 0
|
||
#endif
|
||
|
||
#ifdef KEEP_RELOC_INFO
|
||
H_SET_FLAGS (&headers, ((H_GET_LINENO_SIZE(&headers) ? 0 : F_LNNO) |
|
||
COFF_FLAGS | coff_flags));
|
||
#else
|
||
H_SET_FLAGS (&headers, ((H_GET_LINENO_SIZE(&headers) ? 0 : F_LNNO) |
|
||
(H_GET_RELOCATION_SIZE(&headers) ? 0 : F_RELFLG) |
|
||
COFF_FLAGS | coff_flags));
|
||
#endif
|
||
|
||
{
|
||
unsigned int symtable_size = H_GET_SYMBOL_TABLE_SIZE (&headers);
|
||
char *buffer1 = xmalloc (symtable_size + string_byte_count + 1);
|
||
|
||
H_SET_SYMBOL_TABLE_POINTER (&headers, bfd_tell (abfd));
|
||
w_symbols (abfd, buffer1, symbol_rootP);
|
||
if (string_byte_count > 0)
|
||
w_strings (buffer1 + symtable_size);
|
||
bfd_write (buffer1, 1, symtable_size + string_byte_count, abfd);
|
||
free (buffer1);
|
||
}
|
||
|
||
coff_header_append (abfd, &headers);
|
||
#if 0
|
||
/* Recent changes to write need this, but where it should
|
||
go is up to Ken.. */
|
||
if (bfd_close_all_done (abfd) == false)
|
||
as_fatal ("Can't close %s: %s", out_file_name,
|
||
bfd_errmsg (bfd_get_error ()));
|
||
#else
|
||
{
|
||
extern bfd *stdoutput;
|
||
stdoutput = abfd;
|
||
}
|
||
#endif
|
||
|
||
}
|
||
|
||
/* Add a new segment. This is called from subseg_new via the
|
||
obj_new_segment macro. */
|
||
|
||
segT
|
||
obj_coff_add_segment (name)
|
||
const char *name;
|
||
{
|
||
unsigned int len;
|
||
unsigned int i;
|
||
|
||
/* Find out if we've already got a section of this name. */
|
||
len = strlen (name);
|
||
if (len < sizeof (segment_info[i].scnhdr.s_name))
|
||
++len;
|
||
else
|
||
len = sizeof (segment_info[i].scnhdr.s_name);
|
||
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
|
||
&& (len == sizeof (segment_info[i].scnhdr.s_name)
|
||
|| segment_info[i].scnhdr.s_name[len] == '\0'))
|
||
return (segT) i;
|
||
|
||
if (i == SEG_E9)
|
||
{
|
||
as_bad ("Too many new sections; can't add \"%s\"", name);
|
||
return now_seg;
|
||
}
|
||
|
||
/* Add a new section. */
|
||
strncpy (segment_info[i].scnhdr.s_name, name,
|
||
sizeof (segment_info[i].scnhdr.s_name));
|
||
segment_info[i].scnhdr.s_flags = STYP_REG;
|
||
|
||
return (segT) i;
|
||
}
|
||
|
||
/*
|
||
* implement the .section pseudo op:
|
||
* .section name {, "flags"}
|
||
* ^ ^
|
||
* | +--- optional flags: 'b' for bss
|
||
* | 'i' for info
|
||
* +-- section name 'l' for lib
|
||
* 'n' for noload
|
||
* 'o' for over
|
||
* 'w' for data
|
||
* 'd' (apparently m88k for data)
|
||
* 'x' for text
|
||
* But if the argument is not a quoted string, treat it as a
|
||
* subsegment number.
|
||
*/
|
||
|
||
void
|
||
obj_coff_section (ignore)
|
||
int ignore;
|
||
{
|
||
/* Strip out the section name */
|
||
char *section_name;
|
||
char *section_name_end;
|
||
char c;
|
||
int argp;
|
||
unsigned int len;
|
||
unsigned int exp;
|
||
long flags;
|
||
|
||
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 ();
|
||
|
||
argp = 0;
|
||
if (c == ',')
|
||
argp = 1;
|
||
else if (*input_line_pointer == ',')
|
||
{
|
||
argp = 1;
|
||
++input_line_pointer;
|
||
SKIP_WHITESPACE ();
|
||
}
|
||
|
||
exp = 0;
|
||
flags = 0;
|
||
if (argp)
|
||
{
|
||
if (*input_line_pointer != '"')
|
||
exp = get_absolute_expression ();
|
||
else
|
||
{
|
||
++input_line_pointer;
|
||
while (*input_line_pointer != '"'
|
||
&& ! is_end_of_line[(unsigned char) *input_line_pointer])
|
||
{
|
||
switch (*input_line_pointer)
|
||
{
|
||
case 'b': flags |= STYP_BSS; break;
|
||
case 'i': flags |= STYP_INFO; break;
|
||
case 'l': flags |= STYP_LIB; break;
|
||
case 'n': flags |= STYP_NOLOAD; break;
|
||
case 'o': flags |= STYP_OVER; break;
|
||
case 'd':
|
||
case 'w': flags |= STYP_DATA; break;
|
||
case 'x': flags |= STYP_TEXT; break;
|
||
default:
|
||
as_warn("unknown section attribute '%c'",
|
||
*input_line_pointer);
|
||
break;
|
||
}
|
||
++input_line_pointer;
|
||
}
|
||
if (*input_line_pointer == '"')
|
||
++input_line_pointer;
|
||
}
|
||
}
|
||
|
||
subseg_new (section_name, (subsegT) exp);
|
||
|
||
segment_info[now_seg].scnhdr.s_flags |= flags;
|
||
|
||
*section_name_end = c;
|
||
}
|
||
|
||
|
||
static void
|
||
obj_coff_text (ignore)
|
||
int ignore;
|
||
{
|
||
subseg_new (".text", get_absolute_expression ());
|
||
}
|
||
|
||
|
||
static void
|
||
obj_coff_data (ignore)
|
||
int ignore;
|
||
{
|
||
if (flag_readonly_data_in_text)
|
||
subseg_new (".text", get_absolute_expression () + 1000);
|
||
else
|
||
subseg_new (".data", get_absolute_expression ());
|
||
}
|
||
|
||
static void
|
||
obj_coff_bss (ignore)
|
||
int ignore;
|
||
{
|
||
if (*input_line_pointer == '\n') /* .bss */
|
||
subseg_new(".bss", get_absolute_expression());
|
||
else /* .bss id,expr */
|
||
obj_coff_lcomm(0);
|
||
}
|
||
|
||
static void
|
||
obj_coff_ident (ignore)
|
||
int ignore;
|
||
{
|
||
segT current_seg = now_seg; /* save current seg */
|
||
subsegT current_subseg = now_subseg;
|
||
subseg_new (".comment", 0); /* .comment seg */
|
||
stringer (1); /* read string */
|
||
subseg_set (current_seg, current_subseg); /* restore current seg */
|
||
}
|
||
|
||
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],
|
||
(unsigned int) (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
|
||
c_line_new (symbol, paddr, line_number, frag)
|
||
symbolS * symbol;
|
||
long paddr;
|
||
int line_number;
|
||
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)
|
||
{
|
||
last_line_symbol = symbol;
|
||
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);
|
||
|
||
if (strlen (filename) > FILNMLEN)
|
||
{
|
||
/* Filename is too long to fit into an auxent,
|
||
we stick it into the string table instead. We keep
|
||
a linked list of the filenames we find so we can emit
|
||
them later.*/
|
||
struct filename_list *f = xmalloc (sizeof (struct filename_list));
|
||
|
||
f->filename = filename;
|
||
f->next = 0;
|
||
|
||
SA_SET_FILE_FNAME_ZEROS (symbolP, 0);
|
||
SA_SET_FILE_FNAME_OFFSET (symbolP, 0);
|
||
|
||
if (filename_list_tail)
|
||
filename_list_tail->next = f;
|
||
else
|
||
filename_list_head = f;
|
||
filename_list_tail = f;
|
||
}
|
||
else
|
||
{
|
||
SA_SET_FILE_FNAME (symbolP, filename);
|
||
}
|
||
#ifndef NO_LISTING
|
||
{
|
||
extern int listing;
|
||
if (listing)
|
||
{
|
||
listing_source_file (filename);
|
||
}
|
||
|
||
}
|
||
|
||
#endif
|
||
SF_SET_DEBUG (symbolP);
|
||
S_SET_VALUE (symbolP, (valueT) 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
|
||
w_symbols (abfd, where, symbol_rootP)
|
||
bfd * abfd;
|
||
char *where;
|
||
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
|
||
{
|
||
memset (symbolP->sy_symbol.ost_entry.n_name, 0, 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
|
||
obj_coff_lcomm (ignore)
|
||
int ignore;
|
||
{
|
||
s_lcomm(0);
|
||
return;
|
||
#if 0
|
||
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);
|
||
|
||
if (S_GET_SEGMENT(symbolP) == SEG_UNKNOWN &&
|
||
S_GET_VALUE(symbolP) == 0)
|
||
{
|
||
if (! need_pass_2)
|
||
{
|
||
char *p;
|
||
segT current_seg = now_seg; /* save current seg */
|
||
subsegT current_subseg = now_subseg;
|
||
|
||
subseg_set (SEG_E2, 1);
|
||
symbolP->sy_frag = frag_now;
|
||
p = frag_var(rs_org, 1, 1, (relax_substateT)0, symbolP,
|
||
temp, (char *)0);
|
||
*p = 0;
|
||
subseg_set (current_seg, current_subseg); /* restore current seg */
|
||
S_SET_SEGMENT(symbolP, SEG_E2);
|
||
S_SET_STORAGE_CLASS(symbolP, C_STAT);
|
||
}
|
||
}
|
||
else
|
||
as_bad("Symbol %s already defined", name);
|
||
|
||
demand_empty_rest_of_line();
|
||
#endif
|
||
}
|
||
|
||
static void
|
||
fixup_mdeps (frags, h, this_segment)
|
||
fragS * frags;
|
||
object_headers * h;
|
||
segT this_segment;
|
||
{
|
||
subseg_change (this_segment, 0);
|
||
while (frags)
|
||
{
|
||
switch (frags->fr_type)
|
||
{
|
||
case rs_align:
|
||
case rs_org:
|
||
#ifdef HANDLE_ALIGN
|
||
HANDLE_ALIGN (frags);
|
||
#endif
|
||
frags->fr_type = rs_fill;
|
||
frags->fr_offset =
|
||
(frags->fr_next->fr_address - frags->fr_address - frags->fr_fix);
|
||
break;
|
||
case rs_machine_dependent:
|
||
md_convert_frag (h, this_segment, frags);
|
||
frag_wane (frags);
|
||
break;
|
||
default:
|
||
;
|
||
}
|
||
frags = frags->fr_next;
|
||
}
|
||
}
|
||
|
||
#if 1
|
||
|
||
#ifndef TC_FORCE_RELOCATION
|
||
#define TC_FORCE_RELOCATION(fix) 0
|
||
#endif
|
||
|
||
static void
|
||
fixup_segment (segP, this_segment_type)
|
||
segment_info_type * segP;
|
||
segT this_segment_type;
|
||
{
|
||
register fixS * fixP;
|
||
register symbolS *add_symbolP;
|
||
register symbolS *sub_symbolP;
|
||
long add_number;
|
||
register int size;
|
||
register char *place;
|
||
register long where;
|
||
register char pcrel;
|
||
register fragS *fragP;
|
||
register segT add_symbol_segment = absolute_section;
|
||
|
||
if (linkrelax)
|
||
return;
|
||
|
||
for (fixP = segP->fix_root; 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_tcbit && SF_GET_CALLNAME (add_symbolP))
|
||
{
|
||
/* Relocation should be done via the associated 'bal' entry
|
||
point symbol. */
|
||
|
||
if (!SF_GET_BALNAME (tc_get_bal_of_call (add_symbolP)))
|
||
{
|
||
as_bad_where (fixP->fx_file, fixP->fx_line,
|
||
"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);
|
||
}
|
||
#endif
|
||
sub_symbolP = fixP->fx_subsy;
|
||
add_number = fixP->fx_offset;
|
||
pcrel = fixP->fx_pcrel;
|
||
|
||
if (add_symbolP != NULL
|
||
&& add_symbolP->sy_mri_common)
|
||
{
|
||
know (add_symbolP->sy_value.X_op == O_symbol);
|
||
add_number += S_GET_VALUE (add_symbolP);
|
||
fixP->fx_offset = add_number;
|
||
add_symbolP = fixP->fx_addsy = add_symbolP->sy_value.X_add_symbol;
|
||
}
|
||
|
||
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) != absolute_section)
|
||
{
|
||
as_bad_where (fixP->fx_file, fixP->fx_line,
|
||
"Negative of non-absolute symbol %s",
|
||
S_GET_NAME (sub_symbolP));
|
||
} /* not absolute */
|
||
|
||
add_number -= S_GET_VALUE (sub_symbolP);
|
||
fixP->fx_subsy = 0;
|
||
|
||
/* 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 == absolute_section)))
|
||
{
|
||
/* 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_tcbit)
|
||
{
|
||
as_bad_where (fixP->fx_file, fixP->fx_line,
|
||
"callj to difference of 2 symbols");
|
||
}
|
||
#endif /* TC_I960 */
|
||
add_number += S_GET_VALUE (add_symbolP) -
|
||
S_GET_VALUE (sub_symbolP);
|
||
add_symbolP = NULL;
|
||
|
||
if (!TC_FORCE_RELOCATION (fixP))
|
||
{
|
||
fixP->fx_addsy = NULL;
|
||
fixP->fx_subsy = NULL;
|
||
fixP->fx_done = 1;
|
||
#ifdef TC_M68K /* is this right? */
|
||
pcrel = 0;
|
||
fixP->fx_pcrel = 0;
|
||
#endif
|
||
}
|
||
}
|
||
else
|
||
{
|
||
/* Different segments in subtraction. */
|
||
know (!(S_IS_EXTERNAL (sub_symbolP) && (S_GET_SEGMENT (sub_symbolP) == absolute_section)));
|
||
|
||
if ((S_GET_SEGMENT (sub_symbolP) == absolute_section))
|
||
{
|
||
add_number -= S_GET_VALUE (sub_symbolP);
|
||
}
|
||
#ifdef DIFF_EXPR_OK
|
||
else if (S_GET_SEGMENT (sub_symbolP) == this_segment_type
|
||
#if 0 /* Okay for 68k, at least... */
|
||
&& !pcrel
|
||
#endif
|
||
)
|
||
{
|
||
/* Make it pc-relative. */
|
||
add_number += (md_pcrel_from (fixP)
|
||
- S_GET_VALUE (sub_symbolP));
|
||
pcrel = 1;
|
||
fixP->fx_pcrel = 1;
|
||
sub_symbolP = 0;
|
||
fixP->fx_subsy = 0;
|
||
}
|
||
#endif
|
||
else
|
||
{
|
||
as_bad_where (fixP->fx_file, fixP->fx_line,
|
||
"Can't emit reloc {- %s-seg symbol \"%s\"} @ file address %ld.",
|
||
segment_name (S_GET_SEGMENT (sub_symbolP)),
|
||
S_GET_NAME (sub_symbolP),
|
||
(long) (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);
|
||
#if defined (TC_I386) || defined (TE_LYNX)
|
||
/* On the 386 we must adjust by the segment
|
||
vaddr as well. Ian Taylor. */
|
||
add_number -= segP->scnhdr.s_vaddr;
|
||
#endif
|
||
pcrel = 0; /* Lie. Don't want further pcrel processing. */
|
||
if (!TC_FORCE_RELOCATION (fixP))
|
||
{
|
||
fixP->fx_addsy = NULL;
|
||
fixP->fx_done = 1;
|
||
}
|
||
}
|
||
else
|
||
{
|
||
switch (add_symbol_segment)
|
||
{
|
||
case absolute_section:
|
||
#ifdef TC_I960
|
||
reloc_callj (fixP); /* See comment about reloc_callj() above*/
|
||
#endif /* TC_I960 */
|
||
add_number += S_GET_VALUE (add_symbolP);
|
||
add_symbolP = NULL;
|
||
|
||
if (!TC_FORCE_RELOCATION (fixP))
|
||
{
|
||
fixP->fx_addsy = NULL;
|
||
fixP->fx_done = 1;
|
||
}
|
||
break;
|
||
default:
|
||
|
||
|
||
#if defined(TC_A29K) || (defined(TE_PE) && defined(TC_I386))
|
||
/* This really should be handled in the linker, but
|
||
backward compatibility forbids. */
|
||
add_number += S_GET_VALUE (add_symbolP);
|
||
#else
|
||
add_number += S_GET_VALUE (add_symbolP) +
|
||
segment_info[S_GET_SEGMENT (add_symbolP)].scnhdr.s_paddr;
|
||
#endif
|
||
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_where (fixP->fx_file, fixP->fx_line,
|
||
"can't use COBR format with external label");
|
||
fixP->fx_addsy = NULL;
|
||
fixP->fx_done = 1;
|
||
continue;
|
||
} /* COBR */
|
||
#endif /* TC_I960 */
|
||
#if (defined (TC_I386) || defined (TE_LYNX)) && !defined(TE_PE)
|
||
/* 386 COFF uses a peculiar format in which the
|
||
value of a common symbol is stored in the .text
|
||
segment (I've checked this on SVR3.2 and SCO
|
||
3.2.2) Ian Taylor <ian@cygnus.com>. */
|
||
if (S_IS_COMMON (add_symbolP))
|
||
add_number += S_GET_VALUE (add_symbolP);
|
||
#endif
|
||
break;
|
||
|
||
|
||
} /* switch on symbol seg */
|
||
} /* if not in local seg */
|
||
} /* if there was a + symbol */
|
||
|
||
if (pcrel)
|
||
{
|
||
#if !defined(TC_M88K) && !(defined(TE_PE) && defined(TC_I386))
|
||
/* This adjustment is not correct on the m88k, for which the
|
||
linker does all the computation. */
|
||
add_number -= md_pcrel_from (fixP);
|
||
#endif
|
||
if (add_symbolP == 0)
|
||
{
|
||
fixP->fx_addsy = &abs_symbol;
|
||
} /* if there's an add_symbol */
|
||
#if defined (TC_I386) || defined (TE_LYNX)
|
||
/* On the 386 we must adjust by the segment vaddr
|
||
as well. Ian Taylor. */
|
||
add_number -= segP->scnhdr.s_vaddr;
|
||
#endif
|
||
} /* if pcrel */
|
||
|
||
if (!fixP->fx_bit_fixP)
|
||
{
|
||
#ifndef TC_M88K
|
||
/* The m88k uses the offset field of the reloc to get around
|
||
this problem. */
|
||
if ((size == 1
|
||
&& (add_number & ~0xFF)
|
||
&& ((add_number & ~0xFF) != (-1 & ~0xFF)))
|
||
|| (size == 2
|
||
&& (add_number & ~0xFFFF)
|
||
&& ((add_number & ~0xFFFF) != (-1 & ~0xFFFF))))
|
||
{
|
||
as_bad_where (fixP->fx_file, fixP->fx_line,
|
||
"Value of %ld too large for field of %d bytes at 0x%lx",
|
||
(long) add_number, size,
|
||
(unsigned long) (fragP->fr_address + where));
|
||
}
|
||
#endif
|
||
#ifdef WARN_SIGNED_OVERFLOW_WORD
|
||
/* Warn if a .word value is too large when treated as a
|
||
signed number. We already know it is not too negative.
|
||
This is to catch over-large switches generated by gcc on
|
||
the 68k. */
|
||
if (!flag_signed_overflow_ok
|
||
&& size == 2
|
||
&& add_number > 0x7fff)
|
||
as_bad_where (fixP->fx_file, fixP->fx_line,
|
||
"Signed .word overflow; switch may be too large; %ld at 0x%lx",
|
||
(long) add_number,
|
||
(unsigned long) (fragP->fr_address + where));
|
||
#endif
|
||
} /* not a bit fix */
|
||
/* Once this fix has been applied, we don't have to output
|
||
anything nothing more need be done. */
|
||
#ifdef MD_APPLY_FIX3
|
||
md_apply_fix3 (fixP, &add_number, this_segment_type);
|
||
#else
|
||
md_apply_fix (fixP, add_number);
|
||
#endif
|
||
} /* For each fixS in this segment. */
|
||
} /* fixup_segment() */
|
||
|
||
#endif
|
||
|
||
/* The first entry in a .stab section is special. */
|
||
|
||
void
|
||
obj_coff_init_stab_section (seg)
|
||
segT seg;
|
||
{
|
||
char *file;
|
||
char *p;
|
||
char *stabstr_name;
|
||
unsigned int stroff;
|
||
|
||
/* Make space for this first symbol. */
|
||
p = frag_more (12);
|
||
/* Zero it out. */
|
||
memset (p, 0, 12);
|
||
as_where (&file, (unsigned int *) NULL);
|
||
stabstr_name = (char *) alloca (strlen (segment_info[seg].scnhdr.s_name) + 4);
|
||
strcpy (stabstr_name, segment_info[seg].scnhdr.s_name);
|
||
strcat (stabstr_name, "str");
|
||
stroff = get_stab_string_offset (file, stabstr_name);
|
||
know (stroff == 1);
|
||
md_number_to_chars (p, stroff, 4);
|
||
}
|
||
|
||
/* Fill in the counts in the first entry in a .stab section. */
|
||
|
||
static void
|
||
adjust_stab_section(abfd, seg)
|
||
bfd *abfd;
|
||
segT seg;
|
||
{
|
||
segT stabstrseg = SEG_UNKNOWN;
|
||
char *secname, *name, *name2;
|
||
char *p = NULL;
|
||
int i, strsz = 0, nsyms;
|
||
fragS *frag = segment_info[seg].frchainP->frch_root;
|
||
|
||
/* Look for the associated string table section. */
|
||
|
||
secname = segment_info[seg].scnhdr.s_name;
|
||
name = (char *) alloca (strlen (secname) + 4);
|
||
strcpy (name, secname);
|
||
strcat (name, "str");
|
||
|
||
for (i = SEG_E0; i < SEG_UNKNOWN; i++)
|
||
{
|
||
name2 = segment_info[i].scnhdr.s_name;
|
||
if (name2 != NULL && strncmp(name2, name, 8) == 0)
|
||
{
|
||
stabstrseg = i;
|
||
break;
|
||
}
|
||
}
|
||
|
||
/* If we found the section, get its size. */
|
||
if (stabstrseg != SEG_UNKNOWN)
|
||
strsz = size_section (abfd, stabstrseg);
|
||
|
||
nsyms = size_section (abfd, seg) / 12 - 1;
|
||
|
||
/* Look for the first frag of sufficient size for the initial stab
|
||
symbol, and collect a pointer to it. */
|
||
while (frag && frag->fr_fix < 12)
|
||
frag = frag->fr_next;
|
||
assert (frag != 0);
|
||
p = frag->fr_literal;
|
||
assert (p != 0);
|
||
|
||
/* Write in the number of stab symbols and the size of the string
|
||
table. */
|
||
bfd_h_put_16 (abfd, (bfd_vma) nsyms, (bfd_byte *) p + 6);
|
||
bfd_h_put_32 (abfd, (bfd_vma) strsz, (bfd_byte *) p + 8);
|
||
}
|
||
|
||
#endif /* not BFD_ASSEMBLER */
|
||
|
||
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},
|
||
{"appline", obj_coff_ln, 1},
|
||
{"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},
|
||
#ifndef BFD_ASSEMBLER
|
||
{"use", obj_coff_section, 0},
|
||
{"sect", obj_coff_section, 0},
|
||
{"text", obj_coff_text, 0},
|
||
{"data", obj_coff_data, 0},
|
||
{"bss", obj_coff_bss, 0},
|
||
{"lcomm", obj_coff_lcomm, 0},
|
||
{"ident", obj_coff_ident, 0},
|
||
#else
|
||
{"optim", s_ignore, 0}, /* For sun386i cc (?) */
|
||
{"ident", s_ignore, 0}, /* we don't yet handle this. */
|
||
#endif
|
||
{"ABORT", s_abort, 0},
|
||
#ifdef TC_M88K
|
||
/* The m88k uses sdef instead of def. */
|
||
{"sdef", obj_coff_def, 0},
|
||
#endif
|
||
{NULL} /* end sentinel */
|
||
}; /* obj_pseudo_table */
|