1485 lines
44 KiB
C
1485 lines
44 KiB
C
|
||
/* BFD semi-generic back-end for a.out binaries */
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||
|
||
/* Copyright (C) 1990, 1991 Free Software Foundation, Inc.
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|
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This file is part of BFD, the Binary File Diddler.
|
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BFD 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 1, or (at your option)
|
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any later version.
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|
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BFD 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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|
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You should have received a copy of the GNU General Public License
|
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along with BFD; see the file COPYING. If not, write to
|
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the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA. */
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#include <sysdep.h>
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#include <ansidecl.h>
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#include "bfd.h"
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struct external_exec;
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#include "liba.out.h"
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#include "libbfd.h"
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#include "aout64.h"
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#include "stab.gnu.h"
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#include "ar.h"
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void (*bfd_error_trap)();
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/*SUPPRESS558*/
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/*SUPPRESS529*/
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#define CTOR_TABLE_RELOC_IDX 2
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static reloc_howto_type howto_table_ext[] =
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{
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HOWTO(RELOC_8, 0, 0, 8, false, 0, true, true,0,"8", false, 0,0x000000ff, false),
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HOWTO(RELOC_16, 0, 1, 16, false, 0, true, true,0,"16", false, 0,0x0000ffff, false),
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HOWTO(RELOC_32, 0, 2, 32, false, 0, true, true,0,"32", false, 0,0xffffffff, false),
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HOWTO(RELOC_DISP8, 0, 0, 8, true, 0, false, true,0,"DISP8", false, 0,0x000000ff, false),
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HOWTO(RELOC_DISP16, 0, 1, 16, true, 0, false, true,0,"DISP16", false, 0,0x0000ffff, false),
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HOWTO(RELOC_DISP32, 0, 2, 32, true, 0, false, true,0,"DISP32", false, 0,0xffffffff, false),
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HOWTO(RELOC_WDISP30,2, 2, 30, true, 0, false, true,0,"WDISP30", false, 0,0x3fffffff, false),
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HOWTO(RELOC_WDISP22,2, 2, 22, true, 0, false, true,0,"WDISP22", false, 0,0x003fffff, false),
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HOWTO(RELOC_HI22, 10, 2, 22, false, 0, false, true,0,"HI22", false, 0,0x003fffff, false),
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HOWTO(RELOC_22, 0, 2, 22, false, 0, false, true,0,"22", false, 0,0x003fffff, false),
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HOWTO(RELOC_13, 0, 2, 13, false, 0, false, true,0,"13", false, 0,0x00001fff, false),
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HOWTO(RELOC_LO10, 0, 2, 10, false, 0, false, true,0,"LO10", false, 0,0x000003ff, false),
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HOWTO(RELOC_SFA_BASE,0, 2, 32, false, 0, false, true,0,"SFA_BASE", false, 0,0xffffffff, false),
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HOWTO(RELOC_SFA_OFF13,0,2, 32, false, 0, false, true,0,"SFA_OFF13",false, 0,0xffffffff, false),
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HOWTO(RELOC_BASE10, 0, 2, 16, false, 0, false, true,0,"BASE10", false, 0,0x0000ffff, false),
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HOWTO(RELOC_BASE13, 0, 2, 13, false, 0, false, true,0,"BASE13", false, 0,0x00001fff, false),
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HOWTO(RELOC_BASE22, 0, 2, 0, false, 0, false, true,0,"BASE22", false, 0,0x00000000, false),
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HOWTO(RELOC_PC10, 0, 2, 10, false, 0, false, true,0,"PC10", false, 0,0x000003ff, false),
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HOWTO(RELOC_PC22, 0, 2, 22, false, 0, false, true,0,"PC22", false, 0,0x003fffff, false),
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HOWTO(RELOC_JMP_TBL,0, 2, 32, false, 0, false, true,0,"JMP_TBL", false, 0,0xffffffff, false),
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HOWTO(RELOC_SEGOFF16,0, 2, 0, false, 0, false, true,0,"SEGOFF16", false, 0,0x00000000, false),
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HOWTO(RELOC_GLOB_DAT,0, 2, 0, false, 0, false, true,0,"GLOB_DAT", false, 0,0x00000000, false),
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HOWTO(RELOC_JMP_SLOT,0, 2, 0, false, 0, false, true,0,"JMP_SLOT", false, 0,0x00000000, false),
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HOWTO(RELOC_RELATIVE,0, 2, 0, false, 0, false, true,0,"RELATIVE", false, 0,0x00000000, false),
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HOWTO(RELOC_JUMPTARG,2, 13, 16, true, 0, false, true,0,"JUMPTARG", false, 0,0x0000ffff, false),
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HOWTO(RELOC_CONST, 0, 13, 16, false, 0, false, true,0,"CONST", false, 0,0x0000ffff, false),
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HOWTO(RELOC_CONSTH, 16, 13, 16, false, 0, false, true,0,"CONSTH", false, 0,0x0000ffff, false),
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};
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/* Convert standard reloc records to "arelent" format (incl byte swap). */
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static reloc_howto_type howto_table_std[] = {
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/* type rs size bsz pcrel bitpos abs ovrf sf name part_inpl readmask setmask pcdone */
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HOWTO( 0, 0, 0, 8, false, 0, true, true,0,"8", true, 0x000000ff,0x000000ff, false),
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HOWTO( 1, 0, 1, 16, false, 0, true, true,0,"16", true, 0x0000ffff,0x0000ffff, false),
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HOWTO( 2, 0, 2, 32, false, 0, true, true,0,"32", true, 0xffffffff,0xffffffff, false),
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HOWTO( 3, 0, 3, 64, false, 0, true, true,0,"64", true, 0xdeaddead,0xdeaddead, false),
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HOWTO( 4, 0, 0, 8, true, 0, false, true,0,"DISP8", true, 0x000000ff,0x000000ff, false),
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HOWTO( 5, 0, 1, 16, true, 0, false, true,0,"DISP16", true, 0x0000ffff,0x0000ffff, false),
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HOWTO( 6, 0, 2, 32, true, 0, false, true,0,"DISP32", true, 0xffffffff,0xffffffff, false),
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HOWTO( 7, 0, 3, 64, true, 0, false, true,0,"DISP64", true, 0xfeedface,0xfeedface, false),
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};
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bfd_error_vector_type bfd_error_vector;
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void
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DEFUN(NAME(aout,swap_exec_header_in),(abfd, raw_bytes, execp),
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bfd *abfd AND
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struct external_exec *raw_bytes AND
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struct internal_exec *execp)
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{
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struct external_exec *bytes = (struct external_exec *)raw_bytes;
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/* Now fill in fields in the execp, from the bytes in the raw data. */
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execp->a_info = bfd_h_get_32 (abfd, bytes->e_info);
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execp->a_text = GET_WORD (abfd, bytes->e_text);
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execp->a_data = GET_WORD (abfd, bytes->e_data);
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execp->a_bss = GET_WORD (abfd, bytes->e_bss);
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execp->a_syms = GET_WORD (abfd, bytes->e_syms);
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execp->a_entry = GET_WORD (abfd, bytes->e_entry);
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execp->a_trsize = GET_WORD (abfd, bytes->e_trsize);
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execp->a_drsize = GET_WORD (abfd, bytes->e_drsize);
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}
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void
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DEFUN(NAME(aout,swap_exec_header_out),(abfd, execp, raw_bytes),
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bfd *abfd AND
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struct internal_exec *execp AND
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struct external_exec *raw_bytes)
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{
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struct external_exec *bytes = (struct external_exec *)raw_bytes;
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/* Now fill in fields in the raw data, from the fields in the exec struct. */
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bfd_h_put_32 (abfd, execp->a_info , bytes->e_info);
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PUT_WORD (abfd, execp->a_text , bytes->e_text);
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PUT_WORD (abfd, execp->a_data , bytes->e_data);
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PUT_WORD (abfd, execp->a_bss , bytes->e_bss);
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PUT_WORD (abfd, execp->a_syms , bytes->e_syms);
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PUT_WORD (abfd, execp->a_entry , bytes->e_entry);
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PUT_WORD (abfd, execp->a_trsize, bytes->e_trsize);
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PUT_WORD (abfd, execp->a_drsize, bytes->e_drsize);
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}
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struct container {
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struct aoutdata a;
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struct internal_exec e;
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};
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/* Some A.OUT variant thinks that the file whose format we're checking
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is an a.out file. Do some more checking, and set up for access if
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it really is. Call back to the calling environments "finish up"
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function just before returning, to handle any last-minute setup. */
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bfd_target *
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DEFUN(NAME(aout,some_aout_object_p),(abfd, callback_to_real_object_p),
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bfd *abfd AND
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bfd_target *(*callback_to_real_object_p) ())
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{
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struct external_exec exec_bytes;
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struct internal_exec *execp;
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struct container *rawptr;
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if (bfd_seek (abfd, 0L, false) < 0) {
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bfd_error = system_call_error;
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return 0;
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}
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if (bfd_read ((PTR) &exec_bytes, 1, EXEC_BYTES_SIZE, abfd)
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!= EXEC_BYTES_SIZE) {
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bfd_error = wrong_format;
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return 0;
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}
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/* Use an intermediate variable for clarity */
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rawptr = (struct container *) bfd_zalloc (abfd, sizeof (struct container));
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if (rawptr == NULL) {
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bfd_error = no_memory;
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return 0;
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}
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set_tdata (abfd, rawptr);
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exec_hdr (abfd) = execp = &(rawptr->e);
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NAME(aout,swap_exec_header_in)(abfd, &exec_bytes, execp);
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/* Set the file flags */
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abfd->flags = NO_FLAGS;
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if (execp->a_drsize || execp->a_trsize)
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abfd->flags |= HAS_RELOC;
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if (execp->a_entry)
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abfd->flags |= EXEC_P;
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if (execp->a_syms)
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abfd->flags |= HAS_LINENO | HAS_DEBUG | HAS_SYMS | HAS_LOCALS;
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if (N_MAGIC (*execp) == ZMAGIC) abfd->flags |= D_PAGED;
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if (N_MAGIC (*execp) == NMAGIC) abfd->flags |= WP_TEXT;
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bfd_get_start_address (abfd) = execp->a_entry;
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obj_aout_symbols (abfd) = (aout_symbol_type *)NULL;
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bfd_get_symcount (abfd) = execp->a_syms / sizeof (struct external_nlist);
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/* Set the default architecture and machine type. These can be
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overridden in the callback routine. */
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abfd->obj_arch = bfd_arch_unknown;
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abfd->obj_machine = 0;
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/* The default relocation entry size is that of traditional V7 Unix. */
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obj_reloc_entry_size (abfd) = RELOC_STD_SIZE;
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/* create the sections. This is raunchy, but bfd_close wants to reclaim
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them */
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obj_textsec (abfd) = (asection *)NULL;
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obj_datasec (abfd) = (asection *)NULL;
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obj_bsssec (abfd) = (asection *)NULL;
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(void)bfd_make_section(abfd, ".text");
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(void)bfd_make_section(abfd, ".data");
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(void)bfd_make_section(abfd, ".bss");
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abfd->sections = obj_textsec (abfd);
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obj_textsec (abfd)->next = obj_datasec (abfd);
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obj_datasec (abfd)->next = obj_bsssec (abfd);
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obj_datasec (abfd)->size = execp->a_data;
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obj_bsssec (abfd)->size = execp->a_bss;
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obj_textsec (abfd)->size = execp->a_text;
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if (abfd->flags & D_PAGED) {
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obj_textsec (abfd)->size -= EXEC_BYTES_SIZE;
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}
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obj_textsec (abfd)->flags = (execp->a_trsize != 0 ?
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(SEC_ALLOC | SEC_LOAD | SEC_RELOC | SEC_HAS_CONTENTS) :
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(SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS));
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obj_datasec (abfd)->flags = (execp->a_drsize != 0 ?
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(SEC_ALLOC | SEC_LOAD | SEC_RELOC | SEC_HAS_CONTENTS) :
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(SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS));
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obj_bsssec (abfd)->flags = SEC_ALLOC;
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#ifdef THIS_IS_ONLY_DOCUMENTATION
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/* Call back to the format-dependent code to fill in the rest of the
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fields and do any further cleanup. Things that should be filled
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in by the callback: */
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struct exec *execp = exec_hdr (abfd);
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/* The virtual memory addresses of the sections */
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obj_datasec (abfd)->vma = N_DATADDR(*execp);
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obj_bsssec (abfd)->vma = N_BSSADDR(*execp);
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obj_textsec (abfd)->vma = N_TXTADDR(*execp);
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/* The file offsets of the sections */
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obj_textsec (abfd)->filepos = N_TXTOFF(*execp);
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obj_datasec (abfd)->filepos = N_DATOFF(*execp);
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/* The file offsets of the relocation info */
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obj_textsec (abfd)->rel_filepos = N_TRELOFF(*execp);
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obj_datasec (abfd)->rel_filepos = N_DRELOFF(*execp);
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||
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/* The file offsets of the string table and symbol table. */
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obj_str_filepos (abfd) = N_STROFF (*execp);
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obj_sym_filepos (abfd) = N_SYMOFF (*execp);
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||
|
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/* This common code can't fill in those things because they depend
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on either the start address of the text segment, the rounding
|
||
up of virtual addersses between segments, or the starting file
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||
position of the text segment -- all of which varies among different
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||
versions of a.out. */
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||
|
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/* Determine the architecture and machine type of the object file. */
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switch (N_MACHTYPE (*exec_hdr (abfd))) {
|
||
default:
|
||
abfd->obj_arch = bfd_arch_obscure;
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||
break;
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||
}
|
||
|
||
/* Determine the size of a relocation entry */
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switch (abfd->obj_arch) {
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case bfd_arch_sparc:
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||
case bfd_arch_a29k:
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obj_reloc_entry_size (abfd) = RELOC_EXT_SIZE;
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||
default:
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obj_reloc_entry_size (abfd) = RELOC_STD_SIZE;
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}
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return abfd->xvec;
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|
||
/* The architecture is encoded in various ways in various a.out variants,
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or is not encoded at all in some of them. The relocation size depends
|
||
on the architecture and the a.out variant. Finally, the return value
|
||
is the bfd_target vector in use. If an error occurs, return zero and
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||
set bfd_error to the appropriate error code.
|
||
|
||
Formats such as b.out, which have additional fields in the a.out
|
||
header, should cope with them in this callback as well. */
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#endif /* DOCUMENTATION */
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||
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return (*callback_to_real_object_p)(abfd);
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||
}
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||
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||
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boolean
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DEFUN(NAME(aout,mkobject),(abfd),
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||
bfd *abfd)
|
||
{
|
||
struct container *rawptr;
|
||
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||
bfd_error = system_call_error;
|
||
|
||
/* Use an intermediate variable for clarity */
|
||
rawptr = (struct container *)bfd_zalloc (abfd, sizeof (struct container));
|
||
|
||
if (rawptr == NULL) {
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||
bfd_error = no_memory;
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||
return false;
|
||
}
|
||
|
||
set_tdata (abfd, rawptr);
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||
exec_hdr (abfd) = &(rawptr->e);
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||
|
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/* For simplicity's sake we just make all the sections right here. */
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||
|
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obj_textsec (abfd) = (asection *)NULL;
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||
obj_datasec (abfd) = (asection *)NULL;
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||
obj_bsssec (abfd) = (asection *)NULL;
|
||
bfd_make_section (abfd, ".text");
|
||
bfd_make_section (abfd, ".data");
|
||
bfd_make_section (abfd, ".bss");
|
||
|
||
return true;
|
||
}
|
||
|
||
/* Keep track of machine architecture and machine type for a.out's.
|
||
Return the machine_type for a particular arch&machine, or M_UNKNOWN
|
||
if that exact arch&machine can't be represented in a.out format.
|
||
|
||
If the architecture is understood, machine type 0 (default) should
|
||
always be understood. */
|
||
|
||
enum machine_type
|
||
DEFUN(NAME(aout,machine_type),(arch, machine),
|
||
enum bfd_architecture arch AND
|
||
unsigned long machine)
|
||
{
|
||
enum machine_type arch_flags;
|
||
|
||
arch_flags = M_UNKNOWN;
|
||
|
||
switch (arch) {
|
||
case bfd_arch_sparc:
|
||
if (machine == 0) arch_flags = M_SPARC;
|
||
break;
|
||
|
||
case bfd_arch_m68k:
|
||
switch (machine) {
|
||
case 0: arch_flags = M_68010; break;
|
||
case 68000: arch_flags = M_UNKNOWN; break;
|
||
case 68010: arch_flags = M_68010; break;
|
||
case 68020: arch_flags = M_68020; break;
|
||
default: arch_flags = M_UNKNOWN; break;
|
||
}
|
||
break;
|
||
|
||
case bfd_arch_i386:
|
||
if (machine == 0) arch_flags = M_386;
|
||
break;
|
||
|
||
case bfd_arch_a29k:
|
||
if (machine == 0) arch_flags = M_29K;
|
||
break;
|
||
|
||
default:
|
||
arch_flags = M_UNKNOWN;
|
||
break;
|
||
}
|
||
return arch_flags;
|
||
}
|
||
|
||
boolean
|
||
DEFUN(NAME(aout,set_arch_mach),(abfd, arch, machine),
|
||
bfd *abfd AND
|
||
enum bfd_architecture arch AND
|
||
unsigned long machine)
|
||
{
|
||
abfd->obj_arch = arch;
|
||
abfd->obj_machine = machine;
|
||
if (arch != bfd_arch_unknown &&
|
||
NAME(aout,machine_type) (arch, machine) == M_UNKNOWN)
|
||
return false; /* We can't represent this type */
|
||
return true; /* We're easy ... */
|
||
}
|
||
|
||
/* exec and core file sections */
|
||
|
||
boolean
|
||
DEFUN(NAME(aout,new_section_hook),(abfd, newsect),
|
||
bfd *abfd AND
|
||
asection *newsect)
|
||
{
|
||
/* align to double at least */
|
||
newsect->alignment_power = 3;
|
||
|
||
if (bfd_get_format (abfd) == bfd_object) {
|
||
if (obj_textsec(abfd) == NULL && !strcmp(newsect->name, ".text")) {
|
||
obj_textsec(abfd)= newsect;
|
||
return true;
|
||
}
|
||
|
||
if (obj_datasec(abfd) == NULL && !strcmp(newsect->name, ".data")) {
|
||
obj_datasec(abfd) = newsect;
|
||
return true;
|
||
}
|
||
|
||
if (obj_bsssec(abfd) == NULL && !strcmp(newsect->name, ".bss")) {
|
||
obj_bsssec(abfd) = newsect;
|
||
return true;
|
||
}
|
||
}
|
||
|
||
/* We allow more than three sections internally */
|
||
return true;
|
||
}
|
||
|
||
boolean
|
||
DEFUN(NAME(aout,set_section_contents),(abfd, section, location, offset, count),
|
||
bfd *abfd AND
|
||
sec_ptr section AND
|
||
PTR location AND
|
||
file_ptr offset AND
|
||
bfd_size_type count)
|
||
{
|
||
if (abfd->output_has_begun == false)
|
||
{ /* set by bfd.c handler */
|
||
if ((obj_textsec (abfd) == NULL) || (obj_datasec (abfd) == NULL))
|
||
{
|
||
bfd_error = invalid_operation;
|
||
return false;
|
||
}
|
||
/* if (abfd->flags & D_PAGED) {
|
||
obj_textsec(abfd)->filepos = 0;
|
||
}
|
||
else*/ {
|
||
obj_textsec(abfd)->filepos = EXEC_BYTES_SIZE;
|
||
}
|
||
obj_textsec(abfd)->size = align_power(obj_textsec(abfd)->size,
|
||
obj_textsec(abfd)->alignment_power);
|
||
obj_datasec(abfd)->filepos = obj_textsec (abfd)->size + EXEC_BYTES_SIZE;
|
||
obj_datasec(abfd)->size = align_power(obj_datasec(abfd)->size,
|
||
obj_datasec(abfd)->alignment_power);
|
||
|
||
|
||
}
|
||
/* regardless, once we know what we're doing, we might as well get going */
|
||
if (section != obj_bsssec(abfd))
|
||
{
|
||
bfd_seek (abfd, section->filepos + offset, SEEK_SET);
|
||
|
||
if (count) {
|
||
return (bfd_write ((PTR)location, 1, count, abfd) == count) ?
|
||
true : false;
|
||
}
|
||
return false;
|
||
}
|
||
return true;
|
||
}
|
||
|
||
/* Classify stabs symbols */
|
||
|
||
#define sym_in_text_section(sym) \
|
||
(((sym)->type & (N_ABS | N_TEXT | N_DATA | N_BSS))== N_TEXT)
|
||
|
||
#define sym_in_data_section(sym) \
|
||
(((sym)->type & (N_ABS | N_TEXT | N_DATA | N_BSS))== N_DATA)
|
||
|
||
#define sym_in_bss_section(sym) \
|
||
(((sym)->type & (N_ABS | N_TEXT | N_DATA | N_BSS))== N_BSS)
|
||
|
||
/* Symbol is undefined if type is N_UNDF|N_EXT and if it has
|
||
zero in the "value" field. Nonzeroes there are fortrancommon
|
||
symbols. */
|
||
#define sym_is_undefined(sym) \
|
||
((sym)->type == (N_UNDF | N_EXT) && (sym)->symbol.value == 0)
|
||
|
||
/* Symbol is a global definition if N_EXT is on and if it has
|
||
a nonzero type field. */
|
||
#define sym_is_global_defn(sym) \
|
||
(((sym)->type & N_EXT) && (sym)->type & N_TYPE)
|
||
|
||
/* Symbol is debugger info if any bits outside N_TYPE or N_EXT
|
||
are on. */
|
||
#define sym_is_debugger_info(sym) \
|
||
((sym)->type & ~(N_EXT | N_TYPE))
|
||
|
||
#define sym_is_fortrancommon(sym) \
|
||
(((sym)->type == (N_EXT)) && (sym)->symbol.value != 0)
|
||
|
||
/* Symbol is absolute if it has N_ABS set */
|
||
#define sym_is_absolute(sym) \
|
||
(((sym)->type & N_TYPE)== N_ABS)
|
||
|
||
|
||
#define sym_is_indirect(sym) \
|
||
(((sym)->type & N_ABS)== N_ABS)
|
||
|
||
/* Only in their own functions for ease of debugging; when sym flags have
|
||
stabilised these should be inlined into their (single) caller */
|
||
|
||
static void
|
||
DEFUN(translate_from_native_sym_flags,(sym_pointer, cache_ptr, abfd),
|
||
struct external_nlist *sym_pointer AND
|
||
aout_symbol_type *cache_ptr AND
|
||
bfd *abfd)
|
||
{
|
||
switch (cache_ptr->type & N_TYPE) {
|
||
case N_SETA:
|
||
case N_SETT:
|
||
case N_SETD:
|
||
case N_SETB:
|
||
{
|
||
asection *section = bfd_make_section(abfd,
|
||
cache_ptr->symbol.name);
|
||
arelent_chain *reloc = (arelent_chain *)bfd_alloc(abfd, sizeof(arelent_chain));
|
||
|
||
switch ( (cache_ptr->type & N_TYPE) ) {
|
||
case N_SETA:
|
||
reloc->relent.section = (asection *)NULL;
|
||
cache_ptr->symbol.section = (asection *)NULL;
|
||
break;
|
||
case N_SETT:
|
||
reloc->relent.section = (asection *)obj_textsec(abfd);
|
||
cache_ptr->symbol.value -= reloc->relent.section->vma;
|
||
break;
|
||
case N_SETD:
|
||
reloc->relent.section = (asection *)obj_datasec(abfd);
|
||
cache_ptr->symbol.value -= reloc->relent.section->vma;
|
||
break;
|
||
case N_SETB:
|
||
reloc->relent.section = (asection *)obj_bsssec(abfd);
|
||
cache_ptr->symbol.value -= reloc->relent.section->vma;
|
||
break;
|
||
}
|
||
cache_ptr->symbol.section = reloc->relent.section;
|
||
reloc->relent.addend = cache_ptr->symbol.value ;
|
||
|
||
/* We modify the symbol to belong to a section depending upon the
|
||
name of the symbol - probably __CTOR__ or __DTOR__ but we don't
|
||
really care, and add to the size of the section to contain a
|
||
pointer to the symbol. Build a reloc entry to relocate to this
|
||
symbol attached to this section. */
|
||
|
||
section->flags = SEC_CONSTRUCTOR;
|
||
section->reloc_count++;
|
||
section->alignment_power = 2;
|
||
reloc->relent.sym_ptr_ptr = (asymbol **)NULL;
|
||
reloc->next = section->constructor_chain;
|
||
section->constructor_chain = reloc;
|
||
reloc->relent.address = section->size;
|
||
section->size += sizeof(int *);
|
||
|
||
reloc->relent.howto = howto_table_ext +CTOR_TABLE_RELOC_IDX;
|
||
cache_ptr->symbol.flags |= BSF_DEBUGGING ;
|
||
}
|
||
break;
|
||
default:
|
||
|
||
if (sym_is_debugger_info (cache_ptr)) {
|
||
cache_ptr->symbol.flags = BSF_DEBUGGING ;
|
||
/* Work out the section correct for this symbol */
|
||
switch (cache_ptr->type & N_TYPE)
|
||
{
|
||
case N_TEXT:
|
||
case N_FN:
|
||
cache_ptr->symbol.section = obj_textsec (abfd);
|
||
cache_ptr->symbol.value -= obj_textsec(abfd)->vma;
|
||
break;
|
||
case N_DATA:
|
||
cache_ptr->symbol.value -= obj_datasec(abfd)->vma;
|
||
cache_ptr->symbol.section = obj_datasec (abfd);
|
||
break;
|
||
case N_BSS :
|
||
cache_ptr->symbol.section = obj_bsssec (abfd);
|
||
cache_ptr->symbol.value -= obj_bsssec(abfd)->vma;
|
||
break;
|
||
case N_ABS:
|
||
default:
|
||
cache_ptr->symbol.section = 0;
|
||
break;
|
||
}
|
||
}
|
||
else {
|
||
if (sym_is_fortrancommon (cache_ptr))
|
||
{
|
||
cache_ptr->symbol.flags = BSF_FORT_COMM;
|
||
cache_ptr->symbol.section = (asection *)NULL;
|
||
}
|
||
else {
|
||
if (sym_is_undefined (cache_ptr)) {
|
||
cache_ptr->symbol.flags = BSF_UNDEFINED;
|
||
}
|
||
else if (sym_is_global_defn (cache_ptr)) {
|
||
cache_ptr->symbol.flags = BSF_GLOBAL | BSF_EXPORT;
|
||
}
|
||
|
||
else if (sym_is_absolute (cache_ptr)) {
|
||
cache_ptr->symbol.flags = BSF_ABSOLUTE;
|
||
}
|
||
else {
|
||
cache_ptr->symbol.flags = BSF_LOCAL;
|
||
}
|
||
|
||
/* In a.out, the value of a symbol is always relative to the
|
||
* start of the file, if this is a data symbol we'll subtract
|
||
* the size of the text section to get the section relative
|
||
* value. If this is a bss symbol (which would be strange)
|
||
* we'll subtract the size of the previous two sections
|
||
* to find the section relative address.
|
||
*/
|
||
|
||
if (sym_in_text_section (cache_ptr)) {
|
||
cache_ptr->symbol.value -= obj_textsec(abfd)->vma;
|
||
cache_ptr->symbol.section = obj_textsec (abfd);
|
||
}
|
||
else if (sym_in_data_section (cache_ptr)){
|
||
cache_ptr->symbol.value -= obj_datasec(abfd)->vma;
|
||
cache_ptr->symbol.section = obj_datasec (abfd);
|
||
}
|
||
else if (sym_in_bss_section(cache_ptr)) {
|
||
cache_ptr->symbol.section = obj_bsssec (abfd);
|
||
cache_ptr->symbol.value -= obj_bsssec(abfd)->vma;
|
||
}
|
||
else {
|
||
cache_ptr->symbol.section = (asection *)NULL;
|
||
cache_ptr->symbol.flags |= BSF_ABSOLUTE;
|
||
}
|
||
}
|
||
}
|
||
}
|
||
}
|
||
|
||
static void
|
||
DEFUN(translate_to_native_sym_flags,(sym_pointer, cache_ptr, abfd),
|
||
struct external_nlist *sym_pointer AND
|
||
asymbol *cache_ptr AND
|
||
bfd *abfd)
|
||
{
|
||
bfd_vma value = cache_ptr->value;
|
||
|
||
if (bfd_get_section(cache_ptr)) {
|
||
if (bfd_get_output_section(cache_ptr) == obj_bsssec (abfd)) {
|
||
sym_pointer->e_type[0] |= N_BSS;
|
||
}
|
||
else if (bfd_get_output_section(cache_ptr) == obj_datasec (abfd)) {
|
||
sym_pointer->e_type[0] |= N_DATA;
|
||
}
|
||
else if (bfd_get_output_section(cache_ptr) == obj_textsec (abfd)) {
|
||
sym_pointer->e_type[0] |= N_TEXT;
|
||
}
|
||
else {
|
||
bfd_error_vector.nonrepresentable_section(abfd,
|
||
bfd_get_output_section(cache_ptr)->name);
|
||
}
|
||
/* Turn the symbol from section relative to absolute again */
|
||
|
||
value +=
|
||
cache_ptr->section->output_section->vma
|
||
+ cache_ptr->section->output_offset ;
|
||
}
|
||
else {
|
||
sym_pointer->e_type[0] |= N_ABS;
|
||
}
|
||
|
||
if (cache_ptr->flags & (BSF_FORT_COMM | BSF_UNDEFINED)) {
|
||
sym_pointer->e_type[0] = (N_UNDF | N_EXT);
|
||
}
|
||
else {
|
||
if (cache_ptr->flags & BSF_ABSOLUTE) {
|
||
sym_pointer->e_type[0] |= N_ABS;
|
||
}
|
||
|
||
if (cache_ptr->flags & (BSF_GLOBAL | BSF_EXPORT)) {
|
||
sym_pointer->e_type[0] |= N_EXT;
|
||
}
|
||
if (cache_ptr->flags & BSF_DEBUGGING) {
|
||
sym_pointer->e_type [0]= ((aout_symbol_type *)cache_ptr)->type;
|
||
}
|
||
}
|
||
PUT_WORD(abfd, value, sym_pointer->e_value);
|
||
}
|
||
|
||
/* Native-level interface to symbols. */
|
||
|
||
/* We read the symbols into a buffer, which is discarded when this
|
||
function exits. We read the strings into a buffer large enough to
|
||
hold them all plus all the cached symbol entries. */
|
||
|
||
asymbol *
|
||
DEFUN(NAME(aout,make_empty_symbol),(abfd),
|
||
bfd *abfd)
|
||
{
|
||
aout_symbol_type *new =
|
||
(aout_symbol_type *)bfd_zalloc (abfd, sizeof (aout_symbol_type));
|
||
new->symbol.the_bfd = abfd;
|
||
|
||
return &new->symbol;
|
||
}
|
||
|
||
boolean
|
||
DEFUN(NAME(aout,slurp_symbol_table),(abfd),
|
||
bfd *abfd)
|
||
{
|
||
bfd_size_type symbol_size;
|
||
bfd_size_type string_size;
|
||
unsigned char string_chars[BYTES_IN_WORD];
|
||
struct external_nlist *syms;
|
||
char *strings;
|
||
aout_symbol_type *cached;
|
||
|
||
/* If there's no work to be done, don't do any */
|
||
if (obj_aout_symbols (abfd) != (aout_symbol_type *)NULL) return true;
|
||
symbol_size = exec_hdr(abfd)->a_syms;
|
||
if (symbol_size == 0) {
|
||
bfd_error = no_symbols;
|
||
return false;
|
||
}
|
||
|
||
bfd_seek (abfd, obj_str_filepos (abfd), SEEK_SET);
|
||
if (bfd_read ((PTR)string_chars, BYTES_IN_WORD, 1, abfd) != BYTES_IN_WORD)
|
||
return false;
|
||
string_size = GET_WORD (abfd, string_chars);
|
||
|
||
strings =(char *) bfd_alloc(abfd, string_size + 1);
|
||
cached = (aout_symbol_type *)
|
||
bfd_zalloc(abfd, (bfd_size_type)(bfd_get_symcount (abfd) * sizeof(aout_symbol_type)));
|
||
/* Alloc this last, so we can free it if obstack is in use. */
|
||
syms = (struct external_nlist *) bfd_alloc(abfd, symbol_size);
|
||
|
||
bfd_seek (abfd, obj_sym_filepos (abfd), SEEK_SET);
|
||
if (bfd_read ((PTR)syms, 1, symbol_size, abfd) != symbol_size) {
|
||
bailout:
|
||
if (syms) bfd_release (abfd, syms);
|
||
if (cached) bfd_release (abfd, cached);
|
||
if (strings)bfd_release (abfd, strings);
|
||
return false;
|
||
}
|
||
|
||
bfd_seek (abfd, obj_str_filepos (abfd), SEEK_SET);
|
||
if (bfd_read ((PTR)strings, 1, string_size, abfd) != string_size) {
|
||
goto bailout;
|
||
}
|
||
|
||
/* OK, now walk the new symtable, cacheing symbol properties */
|
||
{
|
||
register struct external_nlist *sym_pointer;
|
||
register struct external_nlist *sym_end = syms + bfd_get_symcount (abfd);
|
||
register aout_symbol_type *cache_ptr = cached;
|
||
|
||
/* Run through table and copy values */
|
||
for (sym_pointer = syms, cache_ptr = cached;
|
||
sym_pointer < sym_end; sym_pointer++, cache_ptr++)
|
||
{
|
||
bfd_vma x = GET_WORD(abfd, sym_pointer->e_strx);
|
||
cache_ptr->symbol.the_bfd = abfd;
|
||
if (x)
|
||
cache_ptr->symbol.name = x + strings;
|
||
else
|
||
cache_ptr->symbol.name = (char *)NULL;
|
||
|
||
cache_ptr->symbol.value = GET_SWORD(abfd, sym_pointer->e_value);
|
||
cache_ptr->desc = bfd_get_16(abfd, sym_pointer->e_desc);
|
||
cache_ptr->other =bfd_get_8(abfd, sym_pointer->e_other);
|
||
cache_ptr->type = bfd_get_8(abfd, sym_pointer->e_type);
|
||
cache_ptr->symbol.udata = 0;
|
||
translate_from_native_sym_flags (sym_pointer, cache_ptr, abfd);
|
||
}
|
||
}
|
||
|
||
obj_aout_symbols (abfd) = cached;
|
||
bfd_release (abfd, (PTR)syms);
|
||
|
||
return true;
|
||
}
|
||
|
||
|
||
void
|
||
DEFUN(NAME(aout,write_syms),(abfd),
|
||
bfd *abfd)
|
||
{
|
||
unsigned int count ;
|
||
asymbol **generic = bfd_get_outsymbols (abfd);
|
||
|
||
bfd_size_type stindex = BYTES_IN_WORD; /* initial string length */
|
||
|
||
for (count = 0; count < bfd_get_symcount (abfd); count++) {
|
||
asymbol *g = generic[count];
|
||
struct external_nlist nsp;
|
||
|
||
|
||
if (g->name) {
|
||
unsigned int length = strlen(g->name) +1;
|
||
PUT_WORD (abfd, stindex, (unsigned char *)nsp.e_strx);
|
||
stindex += length;
|
||
}
|
||
else {
|
||
PUT_WORD (abfd, 0, (unsigned char *)nsp.e_strx);
|
||
}
|
||
|
||
if (g->the_bfd->xvec->flavour == abfd->xvec->flavour)
|
||
{
|
||
bfd_h_put_16(abfd, aout_symbol(g)->desc, nsp.e_desc);
|
||
bfd_h_put_8(abfd, aout_symbol(g)->other, nsp.e_other);
|
||
bfd_h_put_8(abfd, aout_symbol(g)->type, nsp.e_type);
|
||
}
|
||
else
|
||
{
|
||
bfd_h_put_16(abfd,0, nsp.e_desc);
|
||
bfd_h_put_8(abfd, 0, nsp.e_other);
|
||
bfd_h_put_8(abfd, 0, nsp.e_type);
|
||
}
|
||
|
||
|
||
|
||
translate_to_native_sym_flags (&nsp, (PTR)g, abfd);
|
||
|
||
bfd_write((PTR)&nsp,1,EXTERNAL_LIST_SIZE, abfd);
|
||
}
|
||
|
||
|
||
/* Now output the strings. Be sure to put string length into correct
|
||
* byte ordering before writing it.
|
||
*/
|
||
{
|
||
char buffer[BYTES_IN_WORD];
|
||
PUT_WORD (abfd, stindex, (unsigned char *)buffer);
|
||
|
||
bfd_write((PTR)buffer, 1, BYTES_IN_WORD, abfd);
|
||
}
|
||
generic = bfd_get_outsymbols(abfd);
|
||
for (count = 0; count < bfd_get_symcount(abfd); count++)
|
||
{
|
||
asymbol *g = *(generic++);
|
||
|
||
if (g->name)
|
||
{
|
||
size_t length = strlen(g->name)+1;
|
||
bfd_write((PTR)g->name, 1, length, abfd);
|
||
}
|
||
if ((g->flags & BSF_FAKE)==0) {
|
||
g->name = itos(count); /* smash the generic symbol */
|
||
}
|
||
}
|
||
}
|
||
|
||
|
||
|
||
unsigned int
|
||
DEFUN(NAME(aout,get_symtab),(abfd, location),
|
||
bfd *abfd AND
|
||
asymbol **location)
|
||
{
|
||
unsigned int counter = 0;
|
||
aout_symbol_type *symbase;
|
||
|
||
if (!NAME(aout,slurp_symbol_table)(abfd)) return 0;
|
||
|
||
for (symbase = obj_aout_symbols(abfd); counter++ < bfd_get_symcount (abfd);)
|
||
*(location++) = (asymbol *)( symbase++);
|
||
*location++ =0;
|
||
return bfd_get_symcount(abfd);
|
||
}
|
||
|
||
|
||
/* Standard reloc stuff */
|
||
/* Output standard relocation information to a file in target byte order. */
|
||
|
||
void
|
||
DEFUN(NAME(aout,swap_std_reloc_out),(abfd, g, natptr),
|
||
bfd *abfd AND
|
||
arelent *g AND
|
||
struct reloc_std_external *natptr)
|
||
{
|
||
int r_index;
|
||
int r_extern;
|
||
unsigned int r_length;
|
||
int r_pcrel;
|
||
int r_baserel, r_jmptable, r_relative;
|
||
unsigned int r_addend;
|
||
|
||
PUT_WORD(abfd, g->address, natptr->r_address);
|
||
|
||
r_length = g->howto->size ; /* Size as a power of two */
|
||
r_pcrel = (int) g->howto->pc_relative; /* Relative to PC? */
|
||
/* r_baserel, r_jmptable, r_relative??? FIXME-soon */
|
||
r_baserel = 0;
|
||
r_jmptable = 0;
|
||
r_relative = 0;
|
||
|
||
r_addend = g->addend; /* Start here, see how it goes */
|
||
|
||
/* name was clobbered by aout_write_syms to be symbol index */
|
||
|
||
if (g->sym_ptr_ptr != NULL)
|
||
{
|
||
if ((*(g->sym_ptr_ptr))->section) {
|
||
/* put the section offset into the addend for output */
|
||
r_addend += (*(g->sym_ptr_ptr))->section->vma;
|
||
}
|
||
|
||
r_index = stoi((*(g->sym_ptr_ptr))->name);
|
||
r_extern = 1;
|
||
}
|
||
else {
|
||
r_extern = 0;
|
||
if (g->section == NULL) {
|
||
/* It is possible to have a reloc with nothing, we generate an
|
||
abs + 0 */
|
||
r_addend = 0;
|
||
r_index = N_ABS | N_EXT;
|
||
}
|
||
else if(g->section->output_section == obj_textsec(abfd)) {
|
||
r_index = N_TEXT | N_EXT;
|
||
r_addend += g->section->output_section->vma;
|
||
}
|
||
else if (g->section->output_section == obj_datasec(abfd)) {
|
||
r_index = N_DATA | N_EXT;
|
||
r_addend += g->section->output_section->vma;
|
||
}
|
||
else if (g->section->output_section == obj_bsssec(abfd)) {
|
||
r_index = N_BSS | N_EXT ;
|
||
r_addend += g->section->output_section->vma;
|
||
}
|
||
else {
|
||
BFD_ASSERT(0);
|
||
}
|
||
}
|
||
|
||
/* now the fun stuff */
|
||
if (abfd->xvec->header_byteorder_big_p != false) {
|
||
natptr->r_index[0] = r_index >> 16;
|
||
natptr->r_index[1] = r_index >> 8;
|
||
natptr->r_index[2] = r_index;
|
||
natptr->r_type[0] =
|
||
(r_extern? RELOC_STD_BITS_EXTERN_BIG: 0)
|
||
| (r_pcrel? RELOC_STD_BITS_PCREL_BIG: 0)
|
||
| (r_baserel? RELOC_STD_BITS_BASEREL_BIG: 0)
|
||
| (r_jmptable? RELOC_STD_BITS_JMPTABLE_BIG: 0)
|
||
| (r_relative? RELOC_STD_BITS_RELATIVE_BIG: 0)
|
||
| (r_length << RELOC_STD_BITS_LENGTH_SH_BIG);
|
||
} else {
|
||
natptr->r_index[2] = r_index >> 16;
|
||
natptr->r_index[1] = r_index >> 8;
|
||
natptr->r_index[0] = r_index;
|
||
natptr->r_type[0] =
|
||
(r_extern? RELOC_STD_BITS_EXTERN_LITTLE: 0)
|
||
| (r_pcrel? RELOC_STD_BITS_PCREL_LITTLE: 0)
|
||
| (r_baserel? RELOC_STD_BITS_BASEREL_LITTLE: 0)
|
||
| (r_jmptable? RELOC_STD_BITS_JMPTABLE_LITTLE: 0)
|
||
| (r_relative? RELOC_STD_BITS_RELATIVE_LITTLE: 0)
|
||
| (r_length << RELOC_STD_BITS_LENGTH_SH_LITTLE);
|
||
}
|
||
}
|
||
|
||
|
||
/* Extended stuff */
|
||
/* Output extended relocation information to a file in target byte order. */
|
||
|
||
void
|
||
DEFUN(NAME(aout,swap_ext_reloc_out),(abfd, g, natptr),
|
||
bfd *abfd AND
|
||
arelent *g AND
|
||
register struct reloc_ext_external *natptr)
|
||
{
|
||
int r_index;
|
||
int r_extern;
|
||
unsigned int r_type;
|
||
unsigned int r_addend;
|
||
|
||
PUT_WORD (abfd, g->address, natptr->r_address);
|
||
|
||
/* Find a type in the output format which matches the input howto -
|
||
at the moment we assume input format == output format FIXME!! */
|
||
r_type = (enum reloc_type) g->howto->type;
|
||
|
||
r_addend = g->addend; /* Start here, see how it goes */
|
||
|
||
/* name was clobbered by aout_write_syms to be symbol index*/
|
||
|
||
if (g->sym_ptr_ptr != NULL)
|
||
{
|
||
if ((*(g->sym_ptr_ptr))->section) {
|
||
/* put the section offset into the addend for output */
|
||
r_addend += (*(g->sym_ptr_ptr))->section->vma;
|
||
}
|
||
|
||
r_index = stoi((*(g->sym_ptr_ptr))->name);
|
||
r_extern = 1;
|
||
}
|
||
else {
|
||
r_extern = 0;
|
||
if (g->section == NULL) {
|
||
BFD_ASSERT(0);
|
||
r_index = N_ABS | N_EXT;
|
||
}
|
||
else if(g->section->output_section == obj_textsec(abfd)) {
|
||
r_index = N_TEXT | N_EXT;
|
||
r_addend += g->section->output_section->vma;
|
||
}
|
||
else if (g->section->output_section == obj_datasec(abfd)) {
|
||
r_index = N_DATA | N_EXT;
|
||
r_addend += g->section->output_section->vma;
|
||
}
|
||
else if (g->section->output_section == obj_bsssec(abfd)) {
|
||
r_index = N_BSS | N_EXT ;
|
||
r_addend += g->section->output_section->vma;
|
||
}
|
||
else {
|
||
BFD_ASSERT(0);
|
||
}
|
||
}
|
||
|
||
/* now the fun stuff */
|
||
if (abfd->xvec->header_byteorder_big_p != false) {
|
||
natptr->r_index[0] = r_index >> 16;
|
||
natptr->r_index[1] = r_index >> 8;
|
||
natptr->r_index[2] = r_index;
|
||
natptr->r_type[0] =
|
||
(r_extern? RELOC_EXT_BITS_EXTERN_BIG: 0)
|
||
| (r_type << RELOC_EXT_BITS_TYPE_SH_BIG);
|
||
} else {
|
||
natptr->r_index[2] = r_index >> 16;
|
||
natptr->r_index[1] = r_index >> 8;
|
||
natptr->r_index[0] = r_index;
|
||
natptr->r_type[0] =
|
||
(r_extern? RELOC_EXT_BITS_EXTERN_LITTLE: 0)
|
||
| (r_type << RELOC_EXT_BITS_TYPE_SH_LITTLE);
|
||
}
|
||
|
||
PUT_WORD (abfd, r_addend, natptr->r_addend);
|
||
}
|
||
|
||
#define MOVE_ADDRESS(ad) \
|
||
if (r_extern) { \
|
||
cache_ptr->sym_ptr_ptr = symbols + r_index; \
|
||
cache_ptr->section = (asection *)NULL; \
|
||
cache_ptr->addend = ad; \
|
||
} else { \
|
||
cache_ptr->sym_ptr_ptr = (asymbol **)NULL; \
|
||
switch (r_index) { \
|
||
case N_TEXT: \
|
||
case N_TEXT | N_EXT: \
|
||
cache_ptr->section = obj_textsec(abfd); \
|
||
cache_ptr->addend = ad - su->textsec->vma; \
|
||
break; \
|
||
case N_DATA: \
|
||
case N_DATA | N_EXT: \
|
||
cache_ptr->section = obj_datasec(abfd); \
|
||
cache_ptr->addend = ad - su->datasec->vma; \
|
||
break; \
|
||
case N_BSS: \
|
||
case N_BSS | N_EXT: \
|
||
cache_ptr->section = obj_bsssec(abfd); \
|
||
cache_ptr->addend = ad - su->bsssec->vma; \
|
||
break; \
|
||
case N_ABS: \
|
||
case N_ABS | N_EXT: \
|
||
cache_ptr->section = NULL; /* No section */ \
|
||
cache_ptr->addend = ad; /* FIXME, is this right? */ \
|
||
BFD_ASSERT(1); \
|
||
break; \
|
||
default: \
|
||
cache_ptr->section = NULL; /* No section */ \
|
||
cache_ptr->addend = ad; /* FIXME, is this right? */ \
|
||
BFD_ASSERT(1); \
|
||
break; \
|
||
} \
|
||
} \
|
||
|
||
void
|
||
DEFUN(NAME(aout,swap_ext_reloc_in), (abfd, bytes, cache_ptr, symbols),
|
||
bfd *abfd AND
|
||
struct reloc_ext_external *bytes AND
|
||
arelent *cache_ptr AND
|
||
asymbol **symbols)
|
||
{
|
||
int r_index;
|
||
int r_extern;
|
||
unsigned int r_type;
|
||
struct aoutdata *su = (struct aoutdata *)(abfd->tdata);
|
||
|
||
cache_ptr->address = (GET_SWORD (abfd, bytes->r_address));
|
||
|
||
/* now the fun stuff */
|
||
if (abfd->xvec->header_byteorder_big_p != false) {
|
||
r_index = (bytes->r_index[0] << 16)
|
||
| (bytes->r_index[1] << 8)
|
||
| bytes->r_index[2];
|
||
r_extern = (0 != (bytes->r_type[0] & RELOC_EXT_BITS_EXTERN_BIG));
|
||
r_type = (bytes->r_type[0] & RELOC_EXT_BITS_TYPE_BIG)
|
||
>> RELOC_EXT_BITS_TYPE_SH_BIG;
|
||
} else {
|
||
r_index = (bytes->r_index[2] << 16)
|
||
| (bytes->r_index[1] << 8)
|
||
| bytes->r_index[0];
|
||
r_extern = (0 != (bytes->r_type[0] & RELOC_EXT_BITS_EXTERN_LITTLE));
|
||
r_type = (bytes->r_type[0] & RELOC_EXT_BITS_TYPE_LITTLE)
|
||
>> RELOC_EXT_BITS_TYPE_SH_LITTLE;
|
||
}
|
||
|
||
cache_ptr->howto = howto_table_ext + r_type;
|
||
MOVE_ADDRESS(GET_SWORD(abfd,bytes->r_addend));
|
||
}
|
||
|
||
void
|
||
DEFUN(NAME(aout,swap_std_reloc_in), (abfd, bytes, cache_ptr, symbols),
|
||
bfd *abfd AND
|
||
struct reloc_std_external *bytes AND
|
||
arelent *cache_ptr AND
|
||
asymbol **symbols)
|
||
{
|
||
int r_index;
|
||
int r_extern;
|
||
unsigned int r_length;
|
||
int r_pcrel;
|
||
int r_baserel, r_jmptable, r_relative;
|
||
struct aoutdata *su = (struct aoutdata *)(abfd->tdata);
|
||
|
||
cache_ptr->address = (int32_type)(bfd_h_get_32 (abfd, bytes->r_address));
|
||
|
||
/* now the fun stuff */
|
||
if (abfd->xvec->header_byteorder_big_p != false) {
|
||
r_index = (bytes->r_index[0] << 16)
|
||
| (bytes->r_index[1] << 8)
|
||
| bytes->r_index[2];
|
||
r_extern = (0 != (bytes->r_type[0] & RELOC_STD_BITS_EXTERN_BIG));
|
||
r_pcrel = (0 != (bytes->r_type[0] & RELOC_STD_BITS_PCREL_BIG));
|
||
r_baserel = (0 != (bytes->r_type[0] & RELOC_STD_BITS_BASEREL_BIG));
|
||
r_jmptable= (0 != (bytes->r_type[0] & RELOC_STD_BITS_JMPTABLE_BIG));
|
||
r_relative= (0 != (bytes->r_type[0] & RELOC_STD_BITS_RELATIVE_BIG));
|
||
r_length = (bytes->r_type[0] & RELOC_STD_BITS_LENGTH_BIG)
|
||
>> RELOC_STD_BITS_LENGTH_SH_BIG;
|
||
} else {
|
||
r_index = (bytes->r_index[2] << 16)
|
||
| (bytes->r_index[1] << 8)
|
||
| bytes->r_index[0];
|
||
r_extern = (0 != (bytes->r_type[0] & RELOC_STD_BITS_EXTERN_LITTLE));
|
||
r_pcrel = (0 != (bytes->r_type[0] & RELOC_STD_BITS_PCREL_LITTLE));
|
||
r_baserel = (0 != (bytes->r_type[0] & RELOC_STD_BITS_BASEREL_LITTLE));
|
||
r_jmptable= (0 != (bytes->r_type[0] & RELOC_STD_BITS_JMPTABLE_LITTLE));
|
||
r_relative= (0 != (bytes->r_type[0] & RELOC_STD_BITS_RELATIVE_LITTLE));
|
||
r_length = (bytes->r_type[0] & RELOC_STD_BITS_LENGTH_LITTLE)
|
||
>> RELOC_STD_BITS_LENGTH_SH_LITTLE;
|
||
}
|
||
|
||
cache_ptr->howto = howto_table_std + r_length + 4 * r_pcrel;
|
||
/* FIXME-soon: Roll baserel, jmptable, relative bits into howto setting */
|
||
|
||
MOVE_ADDRESS(0);
|
||
}
|
||
|
||
/* Reloc hackery */
|
||
|
||
boolean
|
||
DEFUN(NAME(aout,slurp_reloc_table),(abfd, asect, symbols),
|
||
bfd *abfd AND
|
||
sec_ptr asect AND
|
||
asymbol **symbols)
|
||
{
|
||
unsigned int count;
|
||
bfd_size_type reloc_size;
|
||
PTR relocs;
|
||
arelent *reloc_cache;
|
||
size_t each_size;
|
||
|
||
if (asect->relocation) return true;
|
||
|
||
if (asect->flags & SEC_CONSTRUCTOR) return true;
|
||
|
||
if (asect == obj_datasec (abfd)) {
|
||
reloc_size = exec_hdr(abfd)->a_drsize;
|
||
goto doit;
|
||
}
|
||
|
||
if (asect == obj_textsec (abfd)) {
|
||
reloc_size = exec_hdr(abfd)->a_trsize;
|
||
goto doit;
|
||
}
|
||
|
||
bfd_error = invalid_operation;
|
||
return false;
|
||
|
||
doit:
|
||
bfd_seek (abfd, asect->rel_filepos, SEEK_SET);
|
||
each_size = obj_reloc_entry_size (abfd);
|
||
|
||
count = reloc_size / each_size;
|
||
|
||
|
||
reloc_cache = (arelent *) bfd_zalloc (abfd, (size_t)(count * sizeof
|
||
(arelent)));
|
||
if (!reloc_cache) {
|
||
nomem:
|
||
bfd_error = no_memory;
|
||
return false;
|
||
}
|
||
|
||
relocs = (PTR) bfd_alloc (abfd, reloc_size);
|
||
if (!relocs) {
|
||
bfd_release (abfd, reloc_cache);
|
||
goto nomem;
|
||
}
|
||
|
||
if (bfd_read (relocs, 1, reloc_size, abfd) != reloc_size) {
|
||
bfd_release (abfd, relocs);
|
||
bfd_release (abfd, reloc_cache);
|
||
bfd_error = system_call_error;
|
||
return false;
|
||
}
|
||
|
||
if (each_size == RELOC_EXT_SIZE) {
|
||
register struct reloc_ext_external *rptr = (struct reloc_ext_external *) relocs;
|
||
unsigned int counter = 0;
|
||
arelent *cache_ptr = reloc_cache;
|
||
|
||
for (; counter < count; counter++, rptr++, cache_ptr++) {
|
||
NAME(aout,swap_ext_reloc_in)(abfd, rptr, cache_ptr, symbols);
|
||
}
|
||
} else {
|
||
register struct reloc_std_external *rptr = (struct reloc_std_external*) relocs;
|
||
unsigned int counter = 0;
|
||
arelent *cache_ptr = reloc_cache;
|
||
|
||
for (; counter < count; counter++, rptr++, cache_ptr++) {
|
||
NAME(aout,swap_std_reloc_in)(abfd, rptr, cache_ptr, symbols);
|
||
}
|
||
|
||
}
|
||
|
||
bfd_release (abfd,relocs);
|
||
asect->relocation = reloc_cache;
|
||
asect->reloc_count = count;
|
||
return true;
|
||
}
|
||
|
||
|
||
|
||
/* Write out a relocation section into an object file. */
|
||
|
||
boolean
|
||
DEFUN(NAME(aout,squirt_out_relocs),(abfd, section),
|
||
bfd *abfd AND
|
||
asection *section)
|
||
{
|
||
arelent **generic;
|
||
unsigned char *native, *natptr;
|
||
size_t each_size;
|
||
|
||
unsigned int count = section->reloc_count;
|
||
size_t natsize;
|
||
|
||
if (count == 0) return true;
|
||
|
||
each_size = obj_reloc_entry_size (abfd);
|
||
natsize = each_size * count;
|
||
native = (unsigned char *) bfd_zalloc (abfd, natsize);
|
||
if (!native) {
|
||
bfd_error = no_memory;
|
||
return false;
|
||
}
|
||
|
||
generic = section->orelocation;
|
||
|
||
if (each_size == RELOC_EXT_SIZE)
|
||
{
|
||
for (natptr = native;
|
||
count != 0;
|
||
--count, natptr += each_size, ++generic)
|
||
NAME(aout,swap_ext_reloc_out) (abfd, *generic, (struct reloc_ext_external *)natptr);
|
||
}
|
||
else
|
||
{
|
||
for (natptr = native;
|
||
count != 0;
|
||
--count, natptr += each_size, ++generic)
|
||
NAME(aout,swap_std_reloc_out)(abfd, *generic, (struct reloc_std_external *)natptr);
|
||
}
|
||
|
||
if ( bfd_write ((PTR) native, 1, natsize, abfd) != natsize) {
|
||
bfd_release(abfd, native);
|
||
return false;
|
||
}
|
||
bfd_release (abfd, native);
|
||
|
||
return true;
|
||
}
|
||
|
||
/* This is stupid. This function should be a boolean predicate */
|
||
unsigned int
|
||
DEFUN(NAME(aout,canonicalize_reloc),(abfd, section, relptr, symbols),
|
||
bfd *abfd AND
|
||
sec_ptr section AND
|
||
arelent **relptr AND
|
||
asymbol **symbols)
|
||
{
|
||
arelent *tblptr = section->relocation;
|
||
unsigned int count;
|
||
|
||
if (!(tblptr || NAME(aout,slurp_reloc_table)(abfd, section, symbols)))
|
||
return 0;
|
||
|
||
if (section->flags & SEC_CONSTRUCTOR) {
|
||
arelent_chain *chain = section->constructor_chain;
|
||
for (count = 0; count < section->reloc_count; count ++) {
|
||
*relptr ++ = &chain->relent;
|
||
chain = chain->next;
|
||
}
|
||
}
|
||
else {
|
||
tblptr = section->relocation;
|
||
if (!tblptr) return 0;
|
||
|
||
for (count = 0; count++ < section->reloc_count;)
|
||
{
|
||
*relptr++ = tblptr++;
|
||
}
|
||
}
|
||
*relptr = 0;
|
||
|
||
return section->reloc_count;
|
||
}
|
||
|
||
unsigned int
|
||
DEFUN(NAME(aout,get_reloc_upper_bound),(abfd, asect),
|
||
bfd *abfd AND
|
||
sec_ptr asect)
|
||
{
|
||
if (bfd_get_format (abfd) != bfd_object) {
|
||
bfd_error = invalid_operation;
|
||
return 0;
|
||
}
|
||
if (asect->flags & SEC_CONSTRUCTOR) {
|
||
return (sizeof (arelent *) * (asect->reloc_count+1));
|
||
}
|
||
|
||
|
||
if (asect == obj_datasec (abfd))
|
||
return (sizeof (arelent *) *
|
||
((exec_hdr(abfd)->a_drsize / obj_reloc_entry_size (abfd))
|
||
+1));
|
||
|
||
if (asect == obj_textsec (abfd))
|
||
return (sizeof (arelent *) *
|
||
((exec_hdr(abfd)->a_trsize / obj_reloc_entry_size (abfd))
|
||
+1));
|
||
|
||
bfd_error = invalid_operation;
|
||
return 0;
|
||
}
|
||
|
||
|
||
unsigned int
|
||
DEFUN(NAME(aout,get_symtab_upper_bound),(abfd),
|
||
bfd *abfd)
|
||
{
|
||
if (!NAME(aout,slurp_symbol_table)(abfd)) return 0;
|
||
|
||
return (bfd_get_symcount (abfd)+1) * (sizeof (aout_symbol_type *));
|
||
}
|
||
alent *
|
||
DEFUN(NAME(aout,get_lineno),(ignore_abfd, ignore_symbol),
|
||
bfd *ignore_abfd AND
|
||
asymbol *ignore_symbol)
|
||
{
|
||
return (alent *)NULL;
|
||
}
|
||
|
||
|
||
void
|
||
DEFUN(NAME(aout,print_symbol),(ignore_abfd, afile, symbol, how),
|
||
bfd *ignore_abfd AND
|
||
PTR afile AND
|
||
asymbol *symbol AND
|
||
bfd_print_symbol_enum_type how)
|
||
{
|
||
FILE *file = (FILE *)afile;
|
||
|
||
switch (how) {
|
||
case bfd_print_symbol_name_enum:
|
||
fprintf(file,"%s", symbol->name);
|
||
break;
|
||
case bfd_print_symbol_type_enum:
|
||
fprintf(file,"%4x %2x %2x",(unsigned)(aout_symbol(symbol)->desc & 0xffff),
|
||
(unsigned)(aout_symbol(symbol)->other & 0xff),
|
||
(unsigned)(aout_symbol(symbol)->type));
|
||
break;
|
||
case bfd_print_symbol_all_enum:
|
||
{
|
||
CONST char *section_name = symbol->section == (asection *)NULL ?
|
||
"*abs" : symbol->section->name;
|
||
|
||
bfd_print_symbol_vandf((PTR)file,symbol);
|
||
|
||
fprintf(file," %-5s %04x %02x %02x %s",
|
||
section_name,
|
||
(unsigned)(aout_symbol(symbol)->desc & 0xffff),
|
||
(unsigned)(aout_symbol(symbol)->other & 0xff),
|
||
(unsigned)(aout_symbol(symbol)->type & 0xff),
|
||
symbol->name);
|
||
}
|
||
break;
|
||
}
|
||
}
|
||
|
||
/*
|
||
provided a bfd, a section and an offset into the section, calculate
|
||
and return the name of the source file and the line nearest to the
|
||
wanted location.
|
||
*/
|
||
|
||
boolean
|
||
DEFUN(NAME(aout,find_nearest_line),(abfd,
|
||
section,
|
||
symbols,
|
||
offset,
|
||
filename_ptr,
|
||
functionname_ptr,
|
||
line_ptr),
|
||
bfd *abfd AND
|
||
asection *section AND
|
||
asymbol **symbols AND
|
||
bfd_vma offset AND
|
||
CONST char **filename_ptr AND
|
||
CONST char **functionname_ptr AND
|
||
unsigned int *line_ptr)
|
||
{
|
||
/* Run down the file looking for the filename, function and linenumber */
|
||
asymbol **p;
|
||
static char buffer[100];
|
||
bfd_vma high_line_vma = ~0;
|
||
bfd_vma low_func_vma = 0;
|
||
asymbol *func = 0;
|
||
*filename_ptr = abfd->filename;
|
||
*functionname_ptr = 0;
|
||
*line_ptr = 0;
|
||
if (symbols != (asymbol **)NULL) {
|
||
for (p = symbols; *p; p++) {
|
||
aout_symbol_type *q = (aout_symbol_type *)(*p);
|
||
switch (q->type){
|
||
case N_SO:
|
||
*filename_ptr = q->symbol.name;
|
||
if (obj_textsec(abfd) != section) {
|
||
return true;
|
||
}
|
||
break;
|
||
case N_SLINE:
|
||
|
||
case N_DSLINE:
|
||
case N_BSLINE:
|
||
/* We'll keep this if it resolves nearer than the one we have already */
|
||
if (q->symbol.value >= offset &&
|
||
q->symbol.value < high_line_vma) {
|
||
*line_ptr = q->desc;
|
||
high_line_vma = q->symbol.value;
|
||
}
|
||
break;
|
||
case N_FUN:
|
||
{
|
||
/* We'll keep this if it is nearer than the one we have already */
|
||
if (q->symbol.value >= low_func_vma &&
|
||
q->symbol.value <= offset) {
|
||
low_func_vma = q->symbol.value;
|
||
func = (asymbol *)q;
|
||
}
|
||
if (*line_ptr && func) {
|
||
CONST char *function = func->name;
|
||
char *p;
|
||
strncpy(buffer, function, sizeof(buffer)-1);
|
||
buffer[sizeof(buffer)-1] = 0;
|
||
/* Have to remove : stuff */
|
||
p = strchr(buffer,':');
|
||
if (p != NULL) {*p = NULL; }
|
||
*functionname_ptr = buffer;
|
||
return true;
|
||
|
||
}
|
||
}
|
||
break;
|
||
}
|
||
}
|
||
}
|
||
|
||
return true;
|
||
|
||
}
|
||
|
||
int
|
||
DEFUN(NAME(aout,sizeof_headers),(ignore_abfd, execable),
|
||
bfd *ignore_abfd AND
|
||
boolean execable)
|
||
{
|
||
return EXEC_BYTES_SIZE;
|
||
}
|