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c32144ff6b
* sysdump.c: Add missing prototypes. * srconv.c: Likewise. * unwind-ia64.c: Likewise. * coffdump.c: Likewise. * sysinfo.y: Print prototypes, include <ansidecl.h>. * coffgrok.c: Add missing prototypes, include libiberty.h instead of declaring xcalloc.
752 lines
17 KiB
C
752 lines
17 KiB
C
/* coffgrok.c
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Copyright 1994, 1995, 1997, 1998, 2000, 2001 Free Software Foundation, Inc.
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This file is part of GNU Binutils.
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This program 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 of the License, or
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(at your option) any later version.
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This program 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 this program; if not, write to the Free Software
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Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */
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/* Written by Steve Chamberlain (sac@cygnus.com)
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This module reads a coff file and builds a really simple type tree
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which can be read by other programs. The first application is a
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coff->sysroff converter. It can be tested with coffdump.c.
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*/
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#include <bfd.h>
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#include <libiberty.h>
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#include "bucomm.h"
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#include "coff/internal.h"
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#include "../bfd/libcoff.h"
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#include "coffgrok.h"
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int lofile = 1;
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static struct coff_scope *top_scope;
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static struct coff_scope *file_scope;
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static struct coff_ofile *ofile;
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struct coff_symbol *last_function_symbol;
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struct coff_type *last_function_type;
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struct coff_type *last_struct;
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struct coff_type *last_enum;
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struct coff_sfile *cur_sfile;
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static struct coff_symbol **tindex;
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static asymbol **syms;
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static long symcount;
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#define N(x) ((x)->_n._n_nptr[1])
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static struct coff_ptr_struct *rawsyms;
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static int rawcount;
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static bfd *abfd;
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#define PTR_SIZE 4
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#define SHORT_SIZE 2
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#define INT_SIZE 4
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#define LONG_SIZE 4
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#define FLOAT_SIZE 4
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#define DOUBLE_SIZE 8
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#define INDEXOF(p) ((struct coff_ptr_struct *)(p)-(rawsyms))
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static struct coff_scope *empty_scope PARAMS ((void));
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static struct coff_symbol *empty_symbol PARAMS ((void));
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static void push_scope PARAMS ((int));
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static void pop_scope PARAMS ((void));
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static void do_sections_p1 PARAMS ((struct coff_ofile *));
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static void do_sections_p2 PARAMS ((struct coff_ofile *));
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static struct coff_where *do_where PARAMS ((int));
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static struct coff_line *do_lines PARAMS ((int, char *));
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static struct coff_type *do_type PARAMS ((int));
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static struct coff_visible *do_visible PARAMS ((int));
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static int do_define PARAMS ((int, struct coff_scope *));
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static struct coff_ofile *doit PARAMS ((void));
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static struct coff_scope *
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empty_scope ()
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{
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struct coff_scope *l;
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l = (struct coff_scope *) (xcalloc (sizeof (struct coff_scope), 1));
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return l;
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}
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static struct coff_symbol *
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empty_symbol ()
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{
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return (struct coff_symbol *) (xcalloc (sizeof (struct coff_symbol), 1));
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}
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/*int l;*/
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static void
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push_scope (link)
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int link;
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{
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struct coff_scope *n = empty_scope ();
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if (link)
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{
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if (top_scope)
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{
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if (top_scope->list_tail)
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{
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top_scope->list_tail->next = n;
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}
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else
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{
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top_scope->list_head = n;
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}
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top_scope->list_tail = n;
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}
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}
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n->parent = top_scope;
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top_scope = n;
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}
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static void
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pop_scope ()
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{
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top_scope = top_scope->parent;
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}
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static void
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do_sections_p1 (head)
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struct coff_ofile *head;
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{
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asection *section;
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int idx;
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struct coff_section *all = (struct coff_section *) (xcalloc (abfd->section_count + 1,
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sizeof (struct coff_section)));
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head->nsections = abfd->section_count + 1;
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head->sections = all;
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for (idx = 0, section = abfd->sections; section; section = section->next, idx++)
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{
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long relsize;
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int i = section->target_index;
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arelent **relpp;
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long relcount;
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relsize = bfd_get_reloc_upper_bound (abfd, section);
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if (relsize < 0)
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bfd_fatal (bfd_get_filename (abfd));
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if (relsize == 0)
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continue;
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relpp = (arelent **) xmalloc (relsize);
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relcount = bfd_canonicalize_reloc (abfd, section, relpp, syms);
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if (relcount < 0)
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bfd_fatal (bfd_get_filename (abfd));
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head->sections[i].name = (char *) (section->name);
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head->sections[i].code = section->flags & SEC_CODE;
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head->sections[i].data = section->flags & SEC_DATA;
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if (strcmp (section->name, ".bss") == 0)
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head->sections[i].data = 1;
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head->sections[i].address = section->lma;
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head->sections[i].size = section->_raw_size;
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head->sections[i].number = idx;
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head->sections[i].nrelocs = section->reloc_count;
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head->sections[i].relocs =
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(struct coff_reloc *) (xcalloc (section->reloc_count,
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sizeof (struct coff_reloc)));
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head->sections[i].bfd_section = section;
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}
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head->sections[0].name = "ABSOLUTE";
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head->sections[0].code = 0;
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head->sections[0].data = 0;
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head->sections[0].address = 0;
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head->sections[0].size = 0;
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head->sections[0].number = 0;
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}
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static void
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do_sections_p2 (head)
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struct coff_ofile *head;
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{
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asection *section;
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for (section = abfd->sections; section; section = section->next)
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{
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unsigned int j;
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for (j = 0; j < section->reloc_count; j++)
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{
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int idx;
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int i = section->target_index;
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struct coff_reloc *r = head->sections[i].relocs + j;
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arelent *sr = section->relocation + j;
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r->offset = sr->address;
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r->addend = sr->addend;
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idx = ((coff_symbol_type *) (sr->sym_ptr_ptr[0]))->native - rawsyms;
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r->symbol = tindex[idx];
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}
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}
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}
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static struct coff_where *
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do_where (i)
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int i;
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{
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struct internal_syment *sym = &rawsyms[i].u.syment;
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struct coff_where *where =
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(struct coff_where *) (xmalloc (sizeof (struct coff_where)));
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where->offset = sym->n_value;
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if (sym->n_scnum == -1)
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sym->n_scnum = 0;
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switch (sym->n_sclass)
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{
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case C_FIELD:
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where->where = coff_where_member_of_struct;
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where->offset = sym->n_value / 8;
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where->bitoffset = sym->n_value % 8;
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where->bitsize = rawsyms[i + 1].u.auxent.x_sym.x_misc.x_lnsz.x_size;
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break;
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case C_MOE:
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where->where = coff_where_member_of_enum;
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break;
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case C_MOS:
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case C_MOU:
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where->where = coff_where_member_of_struct;
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break;
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case C_AUTO:
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case C_ARG:
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where->where = coff_where_stack;
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break;
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case C_EXT:
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case C_STAT:
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case C_EXTDEF:
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case C_LABEL:
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where->where = coff_where_memory;
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where->section = &ofile->sections[sym->n_scnum];
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break;
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case C_REG:
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case C_REGPARM:
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where->where = coff_where_register;
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break;
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case C_ENTAG:
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where->where = coff_where_entag;
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break;
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case C_STRTAG:
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case C_UNTAG:
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where->where = coff_where_strtag;
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break;
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case C_TPDEF:
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where->where = coff_where_typedef;
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break;
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default:
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abort ();
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break;
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}
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return where;
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}
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static
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struct coff_line *
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do_lines (i, name)
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int i;
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char *name ATTRIBUTE_UNUSED;
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{
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struct coff_line *res = (struct coff_line *) xcalloc (sizeof (struct coff_line), 1);
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asection *s;
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unsigned int l;
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/* Find out if this function has any line numbers in the table */
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for (s = abfd->sections; s; s = s->next)
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{
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for (l = 0; l < s->lineno_count; l++)
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{
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if (s->lineno[l].line_number == 0)
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{
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if (rawsyms + i == ((coff_symbol_type *) (&(s->lineno[l].u.sym[0])))->native)
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{
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/* These lines are for this function - so count them and stick them on */
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int c = 0;
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/* Find the linenumber of the top of the function, since coff linenumbers
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are relative to the start of the function. */
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int start_line = rawsyms[i + 3].u.auxent.x_sym.x_misc.x_lnsz.x_lnno;
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l++;
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for (c = 0; s->lineno[l + c + 1].line_number; c++)
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;
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/* Add two extra records, one for the prologue and one for the epilogue */
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c += 1;
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res->nlines = c;
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res->lines = (int *) (xcalloc (sizeof (int), c));
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res->addresses = (int *) (xcalloc (sizeof (int), c));
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res->lines[0] = start_line;
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res->addresses[0] = rawsyms[i].u.syment.n_value - s->vma;
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for (c = 0; s->lineno[l + c + 1].line_number; c++)
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{
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res->lines[c + 1] = s->lineno[l + c].line_number + start_line - 1;
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res->addresses[c + 1] = s->lineno[l + c].u.offset;
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}
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return res;
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}
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}
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}
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}
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return res;
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}
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static
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struct coff_type *
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do_type (i)
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int i;
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{
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struct internal_syment *sym = &rawsyms[i].u.syment;
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union internal_auxent *aux = &rawsyms[i + 1].u.auxent;
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struct coff_type *res =
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(struct coff_type *) xmalloc (sizeof (struct coff_type));
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int type = sym->n_type;
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int which_dt = 0;
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int dimind = 0;
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res->type = coff_basic_type;
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res->u.basic = type & 0xf;
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switch (type & 0xf)
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{
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case T_NULL:
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case T_VOID:
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if (sym->n_numaux && sym->n_sclass == C_STAT)
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{
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/* This is probably a section definition */
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res->type = coff_secdef_type;
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res->size = aux->x_scn.x_scnlen;
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}
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else
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{
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if (type == 0)
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{
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/* Don't know what this is, let's make it a simple int */
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res->size = INT_SIZE;
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res->u.basic = T_UINT;
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}
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else
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{
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/* Else it could be a function or pointer to void */
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res->size = 0;
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}
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}
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break;
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break;
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case T_UCHAR:
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case T_CHAR:
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res->size = 1;
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break;
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case T_USHORT:
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case T_SHORT:
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res->size = SHORT_SIZE;
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break;
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case T_UINT:
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case T_INT:
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res->size = INT_SIZE;
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break;
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case T_ULONG:
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case T_LONG:
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res->size = LONG_SIZE;
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break;
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case T_FLOAT:
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res->size = FLOAT_SIZE;
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break;
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case T_DOUBLE:
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res->size = DOUBLE_SIZE;
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break;
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case T_STRUCT:
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case T_UNION:
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if (sym->n_numaux)
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{
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if (aux->x_sym.x_tagndx.p)
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{
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/* Refering to a struct defined elsewhere */
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res->type = coff_structref_type;
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res->u.astructref.ref = tindex[INDEXOF (aux->x_sym.x_tagndx.p)];
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res->size = res->u.astructref.ref ?
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res->u.astructref.ref->type->size : 0;
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}
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else
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{
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/* A definition of a struct */
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last_struct = res;
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res->type = coff_structdef_type;
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res->u.astructdef.elements = empty_scope ();
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res->u.astructdef.idx = 0;
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res->u.astructdef.isstruct = (type & 0xf) == T_STRUCT;
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res->size = aux->x_sym.x_misc.x_lnsz.x_size;
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}
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}
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else
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{
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/* No auxents - it's anonynmous */
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res->type = coff_structref_type;
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res->u.astructref.ref = 0;
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res->size = 0;
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}
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break;
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case T_ENUM:
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if (aux->x_sym.x_tagndx.p)
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{
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/* Refering to a enum defined elsewhere */
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res->type = coff_enumref_type;
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res->u.aenumref.ref = tindex[INDEXOF (aux->x_sym.x_tagndx.p)];
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res->size = res->u.aenumref.ref->type->size;
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}
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else
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{
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/* A definition of an enum */
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last_enum = res;
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res->type = coff_enumdef_type;
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res->u.aenumdef.elements = empty_scope ();
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res->size = aux->x_sym.x_misc.x_lnsz.x_size;
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}
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break;
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case T_MOE:
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break;
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}
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for (which_dt = 5; which_dt >= 0; which_dt--)
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{
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switch ((type >> ((which_dt * 2) + 4)) & 0x3)
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{
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case 0:
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break;
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case DT_ARY:
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{
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struct coff_type *ptr = ((struct coff_type *)
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xmalloc (sizeof (struct coff_type)));
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int els = (dimind < DIMNUM
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? aux->x_sym.x_fcnary.x_ary.x_dimen[dimind]
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: 0);
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++dimind;
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ptr->type = coff_array_type;
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ptr->size = els * res->size;
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ptr->u.array.dim = els;
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ptr->u.array.array_of = res;
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res = ptr;
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break;
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}
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case DT_PTR:
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{
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struct coff_type *ptr =
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(struct coff_type *) xmalloc (sizeof (struct coff_type));
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ptr->size = PTR_SIZE;
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ptr->type = coff_pointer_type;
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ptr->u.pointer.points_to = res;
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res = ptr;
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break;
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}
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case DT_FCN:
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{
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struct coff_type *ptr
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= (struct coff_type *) xmalloc (sizeof (struct coff_type));
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ptr->size = 0;
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ptr->type = coff_function_type;
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ptr->u.function.function_returns = res;
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ptr->u.function.parameters = empty_scope ();
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ptr->u.function.lines = do_lines (i, sym->_n._n_nptr[1]);
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ptr->u.function.code = 0;
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last_function_type = ptr;
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res = ptr;
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break;
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}
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}
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}
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return res;
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}
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static struct coff_visible *
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do_visible (i)
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int i;
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{
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struct internal_syment *sym = &rawsyms[i].u.syment;
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struct coff_visible *visible =
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(struct coff_visible *) (xmalloc (sizeof (struct coff_visible)));
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enum coff_vis_type t;
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switch (sym->n_sclass)
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{
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case C_MOS:
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case C_MOU:
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case C_FIELD:
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t = coff_vis_member_of_struct;
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break;
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case C_MOE:
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t = coff_vis_member_of_enum;
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break;
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case C_REGPARM:
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t = coff_vis_regparam;
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break;
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case C_REG:
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t = coff_vis_register;
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break;
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case C_STRTAG:
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case C_UNTAG:
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case C_ENTAG:
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case C_TPDEF:
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t = coff_vis_tag;
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break;
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case C_AUTOARG:
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case C_ARG:
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t = coff_vis_autoparam;
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break;
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case C_AUTO:
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t = coff_vis_auto;
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break;
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case C_LABEL:
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case C_STAT:
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t = coff_vis_int_def;
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break;
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case C_EXT:
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if (sym->n_scnum == N_UNDEF)
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{
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if (sym->n_value)
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t = coff_vis_common;
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else
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t = coff_vis_ext_ref;
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}
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else
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t = coff_vis_ext_def;
|
|
break;
|
|
default:
|
|
abort ();
|
|
break;
|
|
|
|
}
|
|
visible->type = t;
|
|
return visible;
|
|
}
|
|
|
|
static int
|
|
do_define (i, b)
|
|
int i;
|
|
struct coff_scope *b;
|
|
{
|
|
static int symbol_index;
|
|
struct internal_syment *sym = &rawsyms[i].u.syment;
|
|
|
|
/* Define a symbol and attach to block b */
|
|
struct coff_symbol *s = empty_symbol ();
|
|
|
|
s->number = ++symbol_index;
|
|
s->name = sym->_n._n_nptr[1];
|
|
s->sfile = cur_sfile;
|
|
/* Glue onto the ofile list */
|
|
if (lofile >= 0)
|
|
{
|
|
if (ofile->symbol_list_tail)
|
|
ofile->symbol_list_tail->next_in_ofile_list = s;
|
|
else
|
|
ofile->symbol_list_head = s;
|
|
ofile->symbol_list_tail = s;
|
|
/* And the block list */
|
|
}
|
|
if (b->vars_tail)
|
|
b->vars_tail->next = s;
|
|
else
|
|
b->vars_head = s;
|
|
|
|
b->vars_tail = s;
|
|
b->nvars++;
|
|
s->type = do_type (i);
|
|
s->where = do_where (i);
|
|
s->visible = do_visible (i);
|
|
|
|
tindex[i] = s;
|
|
|
|
/* We remember the lowest address in each section for each source file */
|
|
|
|
if (s->where->where == coff_where_memory
|
|
&& s->type->type == coff_secdef_type)
|
|
{
|
|
struct coff_isection *is = cur_sfile->section + s->where->section->number;
|
|
|
|
if (!is->init)
|
|
{
|
|
is->low = s->where->offset;
|
|
is->high = s->where->offset + s->type->size;
|
|
is->init = 1;
|
|
is->parent = s->where->section;
|
|
}
|
|
|
|
}
|
|
|
|
if (s->type->type == coff_function_type)
|
|
last_function_symbol = s;
|
|
|
|
return i + sym->n_numaux + 1;
|
|
}
|
|
|
|
|
|
static
|
|
struct coff_ofile *
|
|
doit ()
|
|
{
|
|
int i;
|
|
int infile = 0;
|
|
struct coff_ofile *head =
|
|
(struct coff_ofile *) xmalloc (sizeof (struct coff_ofile));
|
|
ofile = head;
|
|
head->source_head = 0;
|
|
head->source_tail = 0;
|
|
head->nsources = 0;
|
|
head->symbol_list_tail = 0;
|
|
head->symbol_list_head = 0;
|
|
do_sections_p1 (head);
|
|
push_scope (1);
|
|
|
|
for (i = 0; i < rawcount;)
|
|
{
|
|
struct internal_syment *sym = &rawsyms[i].u.syment;
|
|
switch (sym->n_sclass)
|
|
{
|
|
case C_FILE:
|
|
{
|
|
/* new source file announced */
|
|
struct coff_sfile *n =
|
|
(struct coff_sfile *) xmalloc (sizeof (struct coff_sfile));
|
|
n->section = (struct coff_isection *) xcalloc (sizeof (struct coff_isection), abfd->section_count + 1);
|
|
cur_sfile = n;
|
|
n->name = sym->_n._n_nptr[1];
|
|
n->next = 0;
|
|
|
|
if (infile)
|
|
{
|
|
pop_scope ();
|
|
}
|
|
infile = 1;
|
|
push_scope (1);
|
|
file_scope = n->scope = top_scope;
|
|
|
|
if (head->source_tail)
|
|
head->source_tail->next = n;
|
|
else
|
|
head->source_head = n;
|
|
head->source_tail = n;
|
|
head->nsources++;
|
|
i += sym->n_numaux + 1;
|
|
}
|
|
break;
|
|
case C_FCN:
|
|
{
|
|
char *name = sym->_n._n_nptr[1];
|
|
if (name[1] == 'b')
|
|
{
|
|
/* Function start */
|
|
push_scope (0);
|
|
last_function_type->u.function.code = top_scope;
|
|
top_scope->sec = ofile->sections + sym->n_scnum;
|
|
top_scope->offset = sym->n_value;
|
|
}
|
|
else
|
|
{
|
|
top_scope->size = sym->n_value - top_scope->offset + 1;
|
|
pop_scope ();
|
|
|
|
}
|
|
i += sym->n_numaux + 1;
|
|
}
|
|
break;
|
|
|
|
case C_BLOCK:
|
|
{
|
|
char *name = sym->_n._n_nptr[1];
|
|
if (name[1] == 'b')
|
|
{
|
|
/* Block start */
|
|
push_scope (1);
|
|
top_scope->sec = ofile->sections + sym->n_scnum;
|
|
top_scope->offset = sym->n_value;
|
|
|
|
}
|
|
else
|
|
{
|
|
top_scope->size = sym->n_value - top_scope->offset + 1;
|
|
pop_scope ();
|
|
}
|
|
i += sym->n_numaux + 1;
|
|
}
|
|
break;
|
|
case C_REGPARM:
|
|
case C_ARG:
|
|
i = do_define (i, last_function_symbol->type->u.function.parameters);
|
|
break;
|
|
case C_MOS:
|
|
case C_MOU:
|
|
case C_FIELD:
|
|
i = do_define (i, last_struct->u.astructdef.elements);
|
|
break;
|
|
case C_MOE:
|
|
i = do_define (i, last_enum->u.aenumdef.elements);
|
|
break;
|
|
case C_STRTAG:
|
|
case C_ENTAG:
|
|
case C_UNTAG:
|
|
/* Various definition */
|
|
i = do_define (i, top_scope);
|
|
break;
|
|
case C_EXT:
|
|
case C_LABEL:
|
|
i = do_define (i, file_scope);
|
|
break;
|
|
case C_STAT:
|
|
case C_TPDEF:
|
|
case C_AUTO:
|
|
case C_REG:
|
|
i = do_define (i, top_scope);
|
|
break;
|
|
default:
|
|
abort ();
|
|
case C_EOS:
|
|
i += sym->n_numaux + 1;
|
|
break;
|
|
}
|
|
}
|
|
do_sections_p2 (head);
|
|
return head;
|
|
}
|
|
|
|
struct coff_ofile *
|
|
coff_grok (inabfd)
|
|
bfd *inabfd;
|
|
{
|
|
long storage;
|
|
struct coff_ofile *p;
|
|
abfd = inabfd;
|
|
storage = bfd_get_symtab_upper_bound (abfd);
|
|
|
|
if (storage < 0)
|
|
bfd_fatal (abfd->filename);
|
|
|
|
syms = (asymbol **) xmalloc (storage);
|
|
symcount = bfd_canonicalize_symtab (abfd, syms);
|
|
if (symcount < 0)
|
|
bfd_fatal (abfd->filename);
|
|
rawsyms = obj_raw_syments (abfd);
|
|
rawcount = obj_raw_syment_count (abfd);;
|
|
tindex = (struct coff_symbol **) (xcalloc (sizeof (struct coff_symbol *), rawcount));
|
|
|
|
p = doit ();
|
|
return p;
|
|
}
|