/* BFD semi-generic back-end for a.out binaries.
- Copyright 1990, 1991, 1992, 1993, 1994 Free Software Foundation, Inc.
+ Copyright (C) 1990-2018 Free Software Foundation, Inc.
Written by Cygnus Support.
-This file is part of BFD, the Binary File Descriptor library.
+ This file is part of BFD, the Binary File Descriptor library.
-This program is free software; you can redistribute it and/or modify
-it under the terms of the GNU General Public License as published by
-the Free Software Foundation; either version 2 of the License, or
-(at your option) any later version.
+ This program is free software; you can redistribute it and/or modify
+ it under the terms of the GNU General Public License as published by
+ the Free Software Foundation; either version 3 of the License, or
+ (at your option) any later version.
-This program is distributed in the hope that it will be useful,
-but WITHOUT ANY WARRANTY; without even the implied warranty of
-MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
-GNU General Public License for more details.
+ This program is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ GNU General Public License for more details.
-You should have received a copy of the GNU General Public License
-along with this program; if not, write to the Free Software
-Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. */
+ You should have received a copy of the GNU General Public License
+ along with this program; if not, write to the Free Software
+ Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston,
+ MA 02110-1301, USA. */
/*
SECTION
a.out backends
-
DESCRIPTION
BFD supports a number of different flavours of a.out format,
The support is split into a basic support file @file{aoutx.h}
and other files which derive functions from the base. One
derivation file is @file{aoutf1.h} (for a.out flavour 1), and
- adds to the basic a.out functions support for sun3, sun4, 386
- and 29k a.out files, to create a target jump vector for a
- specific target.
+ adds to the basic a.out functions support for sun3, sun4, and
+ 386 a.out files, to create a target jump vector for a specific
+ target.
This information is further split out into more specific files
for each machine, including @file{sunos.c} for sun3 and sun4,
- @file{newsos3.c} for the Sony NEWS, and @file{demo64.c} for a
- demonstration of a 64 bit a.out format.
+ and @file{demo64.c} for a demonstration of a 64 bit a.out format.
The base file @file{aoutx.h} defines general mechanisms for
reading and writing records to and from disk and various
from @file{sunos.c}:
| #define TARGET_NAME "a.out-sunos-big"
-| #define VECNAME sunos_big_vec
+| #define VECNAME sparc_aout_sunos_be_vec
| #include "aoutf1.h"
requires all the names from @file{aout32.c}, and produces the jump vector
-| sunos_big_vec
+| sparc_aout_sunos_be_vec
The file @file{host-aout.c} is a special case. It is for a large set
of hosts that use ``more or less standard'' a.out files, and
| TDEFAULTS = -DDEFAULT_VECTOR=host_aout_big_vec
| TDEPFILES= host-aout.o trad-core.o
- in the @file{config/@var{XXX}.mt} file, and modify @file{configure.in}
+ in the @file{config/@var{XXX}.mt} file, and modify @file{configure.ac}
to use the
@file{@var{XXX}.mt} file (by setting "<<bfd_target=XXX>>") when your
- configuration is selected.
-
-*/
+ configuration is selected. */
/* Some assumptions:
* Any BFD with D_PAGED set is ZMAGIC, and vice versa.
(Just want to make these explicit, so the conditions tested in this
file make sense if you're more familiar with a.out than with BFD.) */
-#define KEEPIT flags
-#define KEEPITTYPE int
+#define KEEPIT udata.i
-#include <string.h> /* For strchr and friends */
+#include "sysdep.h"
#include "bfd.h"
-#include <sysdep.h>
+#include "safe-ctype.h"
#include "bfdlink.h"
#include "libaout.h"
#include "aout/stab_gnu.h"
#include "aout/ar.h"
-static boolean aout_get_external_symbols PARAMS ((bfd *));
-static boolean translate_from_native_sym_flags
- PARAMS ((bfd *, aout_symbol_type *));
-static boolean translate_to_native_sym_flags
- PARAMS ((bfd *, asymbol *, struct external_nlist *));
-
/*
SUBSECTION
Relocations
The file @file{aoutx.h} provides for both the @emph{standard}
and @emph{extended} forms of a.out relocation records.
- The standard records contain only an
- address, a symbol index, and a type field. The extended records
- (used on 29ks and sparcs) also have a full integer for an
- addend.
+ The standard records contain only an address, a symbol index,
+ and a type field. The extended records also have a full
+ integer for an addend. */
-*/
#ifndef CTOR_TABLE_RELOC_HOWTO
#define CTOR_TABLE_RELOC_IDX 2
-#define CTOR_TABLE_RELOC_HOWTO(BFD) ((obj_reloc_entry_size(BFD) == RELOC_EXT_SIZE \
- ? howto_table_ext : howto_table_std) \
- + CTOR_TABLE_RELOC_IDX)
+#define CTOR_TABLE_RELOC_HOWTO(BFD) \
+ ((obj_reloc_entry_size (BFD) == RELOC_EXT_SIZE \
+ ? howto_table_ext : howto_table_std) \
+ + CTOR_TABLE_RELOC_IDX)
#endif
#ifndef MY_swap_std_reloc_in
-#define MY_swap_std_reloc_in NAME(aout,swap_std_reloc_in)
+#define MY_swap_std_reloc_in NAME (aout, swap_std_reloc_in)
+#endif
+
+#ifndef MY_swap_ext_reloc_in
+#define MY_swap_ext_reloc_in NAME (aout, swap_ext_reloc_in)
#endif
#ifndef MY_swap_std_reloc_out
-#define MY_swap_std_reloc_out NAME(aout,swap_std_reloc_out)
+#define MY_swap_std_reloc_out NAME (aout, swap_std_reloc_out)
+#endif
+
+#ifndef MY_swap_ext_reloc_out
+#define MY_swap_ext_reloc_out NAME (aout, swap_ext_reloc_out)
+#endif
+
+#ifndef MY_final_link_relocate
+#define MY_final_link_relocate _bfd_final_link_relocate
+#endif
+
+#ifndef MY_relocate_contents
+#define MY_relocate_contents _bfd_relocate_contents
#endif
-#define howto_table_ext NAME(aout,ext_howto_table)
-#define howto_table_std NAME(aout,std_howto_table)
+#define howto_table_ext NAME (aout, ext_howto_table)
+#define howto_table_std NAME (aout, std_howto_table)
reloc_howto_type howto_table_ext[] =
{
- /* type rs size bsz pcrel bitpos ovrf sf name part_inpl readmask setmask pcdone */
- HOWTO(RELOC_8, 0, 0, 8, false, 0, complain_overflow_bitfield,0,"8", false, 0,0x000000ff, false),
- HOWTO(RELOC_16, 0, 1, 16, false, 0, complain_overflow_bitfield,0,"16", false, 0,0x0000ffff, false),
- HOWTO(RELOC_32, 0, 2, 32, false, 0, complain_overflow_bitfield,0,"32", false, 0,0xffffffff, false),
- HOWTO(RELOC_DISP8, 0, 0, 8, true, 0, complain_overflow_signed,0,"DISP8", false, 0,0x000000ff, false),
- HOWTO(RELOC_DISP16, 0, 1, 16, true, 0, complain_overflow_signed,0,"DISP16", false, 0,0x0000ffff, false),
- HOWTO(RELOC_DISP32, 0, 2, 32, true, 0, complain_overflow_signed,0,"DISP32", false, 0,0xffffffff, false),
- HOWTO(RELOC_WDISP30,2, 2, 30, true, 0, complain_overflow_signed,0,"WDISP30", false, 0,0x3fffffff, false),
- HOWTO(RELOC_WDISP22,2, 2, 22, true, 0, complain_overflow_signed,0,"WDISP22", false, 0,0x003fffff, false),
- HOWTO(RELOC_HI22, 10, 2, 22, false, 0, complain_overflow_bitfield,0,"HI22", false, 0,0x003fffff, false),
- HOWTO(RELOC_22, 0, 2, 22, false, 0, complain_overflow_bitfield,0,"22", false, 0,0x003fffff, false),
- HOWTO(RELOC_13, 0, 2, 13, false, 0, complain_overflow_bitfield,0,"13", false, 0,0x00001fff, false),
- HOWTO(RELOC_LO10, 0, 2, 10, false, 0, complain_overflow_dont,0,"LO10", false, 0,0x000003ff, false),
- HOWTO(RELOC_SFA_BASE,0, 2, 32, false, 0, complain_overflow_bitfield,0,"SFA_BASE", false, 0,0xffffffff, false),
- HOWTO(RELOC_SFA_OFF13,0,2, 32, false, 0, complain_overflow_bitfield,0,"SFA_OFF13",false, 0,0xffffffff, false),
- HOWTO(RELOC_BASE10, 0, 2, 16, false, 0, complain_overflow_bitfield,0,"BASE10", false, 0,0x0000ffff, false),
- HOWTO(RELOC_BASE13, 0, 2, 13, false, 0, complain_overflow_bitfield,0,"BASE13", false, 0,0x00001fff, false),
- HOWTO(RELOC_BASE22, 0, 2, 0, false, 0, complain_overflow_bitfield,0,"BASE22", false, 0,0x00000000, false),
- HOWTO(RELOC_PC10, 0, 2, 10, false, 0, complain_overflow_bitfield,0,"PC10", false, 0,0x000003ff, false),
- HOWTO(RELOC_PC22, 0, 2, 22, false, 0, complain_overflow_bitfield,0,"PC22", false, 0,0x003fffff, false),
- HOWTO(RELOC_JMP_TBL,0, 2, 32, false, 0, complain_overflow_bitfield,0,"JMP_TBL", false, 0,0xffffffff, false),
- HOWTO(RELOC_SEGOFF16,0, 2, 0, false, 0, complain_overflow_bitfield,0,"SEGOFF16", false, 0,0x00000000, false),
- HOWTO(RELOC_GLOB_DAT,0, 2, 0, false, 0, complain_overflow_bitfield,0,"GLOB_DAT", false, 0,0x00000000, false),
- HOWTO(RELOC_JMP_SLOT,0, 2, 0, false, 0, complain_overflow_bitfield,0,"JMP_SLOT", false, 0,0x00000000, false),
- HOWTO(RELOC_RELATIVE,0, 2, 0, false, 0, complain_overflow_bitfield,0,"RELATIVE", false, 0,0x00000000, false),
+ /* Type rs size bsz pcrel bitpos ovrf sf name part_inpl readmask setmask pcdone. */
+ HOWTO (RELOC_8, 0, 0, 8, FALSE, 0, complain_overflow_bitfield, 0, "8", FALSE, 0, 0x000000ff, FALSE),
+ HOWTO (RELOC_16, 0, 1, 16, FALSE, 0, complain_overflow_bitfield, 0, "16", FALSE, 0, 0x0000ffff, FALSE),
+ HOWTO (RELOC_32, 0, 2, 32, FALSE, 0, complain_overflow_bitfield, 0, "32", FALSE, 0, 0xffffffff, FALSE),
+ HOWTO (RELOC_DISP8, 0, 0, 8, TRUE, 0, complain_overflow_signed, 0, "DISP8", FALSE, 0, 0x000000ff, FALSE),
+ HOWTO (RELOC_DISP16, 0, 1, 16, TRUE, 0, complain_overflow_signed, 0, "DISP16", FALSE, 0, 0x0000ffff, FALSE),
+ HOWTO (RELOC_DISP32, 0, 2, 32, TRUE, 0, complain_overflow_signed, 0, "DISP32", FALSE, 0, 0xffffffff, FALSE),
+ HOWTO (RELOC_WDISP30, 2, 2, 30, TRUE, 0, complain_overflow_signed, 0, "WDISP30", FALSE, 0, 0x3fffffff, FALSE),
+ HOWTO (RELOC_WDISP22, 2, 2, 22, TRUE, 0, complain_overflow_signed, 0, "WDISP22", FALSE, 0, 0x003fffff, FALSE),
+ HOWTO (RELOC_HI22, 10, 2, 22, FALSE, 0, complain_overflow_bitfield, 0, "HI22", FALSE, 0, 0x003fffff, FALSE),
+ HOWTO (RELOC_22, 0, 2, 22, FALSE, 0, complain_overflow_bitfield, 0, "22", FALSE, 0, 0x003fffff, FALSE),
+ HOWTO (RELOC_13, 0, 2, 13, FALSE, 0, complain_overflow_bitfield, 0, "13", FALSE, 0, 0x00001fff, FALSE),
+ HOWTO (RELOC_LO10, 0, 2, 10, FALSE, 0, complain_overflow_dont, 0, "LO10", FALSE, 0, 0x000003ff, FALSE),
+ HOWTO (RELOC_SFA_BASE,0, 2, 32, FALSE, 0, complain_overflow_bitfield, 0, "SFA_BASE", FALSE, 0, 0xffffffff, FALSE),
+ HOWTO (RELOC_SFA_OFF13,0, 2, 32, FALSE, 0, complain_overflow_bitfield, 0, "SFA_OFF13", FALSE, 0, 0xffffffff, FALSE),
+ HOWTO (RELOC_BASE10, 0, 2, 10, FALSE, 0, complain_overflow_dont, 0, "BASE10", FALSE, 0, 0x000003ff, FALSE),
+ HOWTO (RELOC_BASE13, 0, 2, 13, FALSE, 0, complain_overflow_signed, 0, "BASE13", FALSE, 0, 0x00001fff, FALSE),
+ HOWTO (RELOC_BASE22, 10, 2, 22, FALSE, 0, complain_overflow_bitfield, 0, "BASE22", FALSE, 0, 0x003fffff, FALSE),
+ HOWTO (RELOC_PC10, 0, 2, 10, TRUE, 0, complain_overflow_dont, 0, "PC10", FALSE, 0, 0x000003ff, TRUE),
+ HOWTO (RELOC_PC22, 10, 2, 22, TRUE, 0, complain_overflow_signed, 0, "PC22", FALSE, 0, 0x003fffff, TRUE),
+ HOWTO (RELOC_JMP_TBL, 2, 2, 30, TRUE, 0, complain_overflow_signed, 0, "JMP_TBL", FALSE, 0, 0x3fffffff, FALSE),
+ HOWTO (RELOC_SEGOFF16,0, 2, 0, FALSE, 0, complain_overflow_bitfield, 0, "SEGOFF16", FALSE, 0, 0x00000000, FALSE),
+ HOWTO (RELOC_GLOB_DAT,0, 2, 0, FALSE, 0, complain_overflow_bitfield, 0, "GLOB_DAT", FALSE, 0, 0x00000000, FALSE),
+ HOWTO (RELOC_JMP_SLOT,0, 2, 0, FALSE, 0, complain_overflow_bitfield, 0, "JMP_SLOT", FALSE, 0, 0x00000000, FALSE),
+ HOWTO (RELOC_RELATIVE,0, 2, 0, FALSE, 0, complain_overflow_bitfield, 0, "RELATIVE", FALSE, 0, 0x00000000, FALSE),
+ HOWTO (0, 0, 3, 0, FALSE, 0, complain_overflow_dont, 0, "R_SPARC_NONE",FALSE, 0, 0x00000000, TRUE),
+ HOWTO (0, 0, 3, 0, FALSE, 0, complain_overflow_dont, 0, "R_SPARC_NONE",FALSE, 0, 0x00000000, TRUE),
+#define RELOC_SPARC_REV32 RELOC_WDISP19
+ HOWTO (RELOC_SPARC_REV32, 0, 2, 32, FALSE, 0, complain_overflow_dont, 0,"R_SPARC_REV32",FALSE, 0, 0xffffffff, FALSE),
};
/* Convert standard reloc records to "arelent" format (incl byte swap). */
-reloc_howto_type howto_table_std[] = {
- /* type rs size bsz pcrel bitpos ovrf sf name part_inpl readmask setmask pcdone */
-HOWTO( 0, 0, 0, 8, false, 0, complain_overflow_bitfield,0,"8", true, 0x000000ff,0x000000ff, false),
-HOWTO( 1, 0, 1, 16, false, 0, complain_overflow_bitfield,0,"16", true, 0x0000ffff,0x0000ffff, false),
-HOWTO( 2, 0, 2, 32, false, 0, complain_overflow_bitfield,0,"32", true, 0xffffffff,0xffffffff, false),
-HOWTO( 3, 0, 4, 64, false, 0, complain_overflow_bitfield,0,"64", true, 0xdeaddead,0xdeaddead, false),
-HOWTO( 4, 0, 0, 8, true, 0, complain_overflow_signed, 0,"DISP8", true, 0x000000ff,0x000000ff, false),
-HOWTO( 5, 0, 1, 16, true, 0, complain_overflow_signed, 0,"DISP16", true, 0x0000ffff,0x0000ffff, false),
-HOWTO( 6, 0, 2, 32, true, 0, complain_overflow_signed, 0,"DISP32", true, 0xffffffff,0xffffffff, false),
-HOWTO( 7, 0, 4, 64, true, 0, complain_overflow_signed, 0,"DISP64", true, 0xfeedface,0xfeedface, false),
-HOWTO( 8, 0, 2, 0, false, 0, complain_overflow_bitfield,0,"GOT_REL", false, 0,0x00000000, false),
-HOWTO( 9, 0, 1, 16, false, 0, complain_overflow_bitfield,0,"BASE16", false,0xffffffff,0xffffffff, false),
-HOWTO(10, 0, 2, 32, false, 0, complain_overflow_bitfield,0,"BASE32", false,0xffffffff,0xffffffff, false),
-{ -1 },
-{ -1 },
-{ -1 },
-{ -1 },
-{ -1 },
- HOWTO(16, 0, 2, 0, false, 0, complain_overflow_bitfield,0,"JMP_TABLE", false, 0,0x00000000, false),
-{ -1 },
-{ -1 },
-{ -1 },
-{ -1 },
-{ -1 },
-{ -1 },
-{ -1 },
-{ -1 }, { -1 }, { -1 }, { -1 }, { -1 }, { -1 }, { -1 }, { -1 },
- HOWTO(32, 0, 2, 0, false, 0, complain_overflow_bitfield,0,"RELATIVE", false, 0,0x00000000, false),
-{ -1 },
-{ -1 },
-{ -1 },
-{ -1 },
-{ -1 },
-{ -1 },
-{ -1 },
- HOWTO(40, 0, 2, 0, false, 0, complain_overflow_bitfield,0,"BASEREL", false, 0,0x00000000, false),
+reloc_howto_type howto_table_std[] =
+{
+ /* type rs size bsz pcrel bitpos ovrf sf name part_inpl readmask setmask pcdone. */
+HOWTO ( 0, 0, 0, 8, FALSE, 0, complain_overflow_bitfield,0,"8", TRUE, 0x000000ff,0x000000ff, FALSE),
+HOWTO ( 1, 0, 1, 16, FALSE, 0, complain_overflow_bitfield,0,"16", TRUE, 0x0000ffff,0x0000ffff, FALSE),
+HOWTO ( 2, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,0,"32", TRUE, 0xffffffff,0xffffffff, FALSE),
+HOWTO ( 3, 0, 4, 64, FALSE, 0, complain_overflow_bitfield,0,"64", TRUE, 0xdeaddead,0xdeaddead, FALSE),
+HOWTO ( 4, 0, 0, 8, TRUE, 0, complain_overflow_signed, 0,"DISP8", TRUE, 0x000000ff,0x000000ff, FALSE),
+HOWTO ( 5, 0, 1, 16, TRUE, 0, complain_overflow_signed, 0,"DISP16", TRUE, 0x0000ffff,0x0000ffff, FALSE),
+HOWTO ( 6, 0, 2, 32, TRUE, 0, complain_overflow_signed, 0,"DISP32", TRUE, 0xffffffff,0xffffffff, FALSE),
+HOWTO ( 7, 0, 4, 64, TRUE, 0, complain_overflow_signed, 0,"DISP64", TRUE, 0xfeedface,0xfeedface, FALSE),
+HOWTO ( 8, 0, 2, 0, FALSE, 0, complain_overflow_bitfield,0,"GOT_REL", FALSE, 0,0x00000000, FALSE),
+HOWTO ( 9, 0, 1, 16, FALSE, 0, complain_overflow_bitfield,0,"BASE16", FALSE,0xffffffff,0xffffffff, FALSE),
+HOWTO (10, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,0,"BASE32", FALSE,0xffffffff,0xffffffff, FALSE),
+EMPTY_HOWTO (-1),
+EMPTY_HOWTO (-1),
+EMPTY_HOWTO (-1),
+EMPTY_HOWTO (-1),
+EMPTY_HOWTO (-1),
+ HOWTO (16, 0, 2, 0, FALSE, 0, complain_overflow_bitfield,0,"JMP_TABLE", FALSE, 0,0x00000000, FALSE),
+EMPTY_HOWTO (-1),
+EMPTY_HOWTO (-1),
+EMPTY_HOWTO (-1),
+EMPTY_HOWTO (-1),
+EMPTY_HOWTO (-1),
+EMPTY_HOWTO (-1),
+EMPTY_HOWTO (-1),
+EMPTY_HOWTO (-1),
+EMPTY_HOWTO (-1),
+EMPTY_HOWTO (-1),
+EMPTY_HOWTO (-1),
+EMPTY_HOWTO (-1),
+EMPTY_HOWTO (-1),
+EMPTY_HOWTO (-1),
+EMPTY_HOWTO (-1),
+ HOWTO (32, 0, 2, 0, FALSE, 0, complain_overflow_bitfield,0,"RELATIVE", FALSE, 0,0x00000000, FALSE),
+EMPTY_HOWTO (-1),
+EMPTY_HOWTO (-1),
+EMPTY_HOWTO (-1),
+EMPTY_HOWTO (-1),
+EMPTY_HOWTO (-1),
+EMPTY_HOWTO (-1),
+EMPTY_HOWTO (-1),
+ HOWTO (40, 0, 2, 0, FALSE, 0, complain_overflow_bitfield,0,"BASEREL", FALSE, 0,0x00000000, FALSE),
};
-#define TABLE_SIZE(TABLE) (sizeof(TABLE)/sizeof(TABLE[0]))
+#define TABLE_SIZE(TABLE) (sizeof (TABLE) / sizeof (TABLE[0]))
-CONST struct reloc_howto_struct *
-NAME(aout,reloc_type_lookup) (abfd,code)
- bfd *abfd;
- bfd_reloc_code_real_type code;
+reloc_howto_type *
+NAME (aout, reloc_type_lookup) (bfd *abfd, bfd_reloc_code_real_type code)
{
-#define EXT(i,j) case i: return &howto_table_ext[j]
-#define STD(i,j) case i: return &howto_table_std[j]
+#define EXT(i, j) case i: return & howto_table_ext [j]
+#define STD(i, j) case i: return & howto_table_std [j]
int ext = obj_reloc_entry_size (abfd) == RELOC_EXT_SIZE;
+
if (code == BFD_RELOC_CTOR)
- switch (bfd_get_arch_info (abfd)->bits_per_address)
+ switch (bfd_arch_bits_per_address (abfd))
{
case 32:
code = BFD_RELOC_32;
code = BFD_RELOC_64;
break;
}
+
if (ext)
switch (code)
{
+ EXT (BFD_RELOC_8, 0);
+ EXT (BFD_RELOC_16, 1);
EXT (BFD_RELOC_32, 2);
EXT (BFD_RELOC_HI22, 8);
EXT (BFD_RELOC_LO10, 11);
EXT (BFD_RELOC_32_PCREL_S2, 6);
EXT (BFD_RELOC_SPARC_WDISP22, 7);
EXT (BFD_RELOC_SPARC13, 10);
+ EXT (BFD_RELOC_SPARC_GOT10, 14);
EXT (BFD_RELOC_SPARC_BASE13, 15);
- default: return (CONST struct reloc_howto_struct *) 0;
+ EXT (BFD_RELOC_SPARC_GOT13, 15);
+ EXT (BFD_RELOC_SPARC_GOT22, 16);
+ EXT (BFD_RELOC_SPARC_PC10, 17);
+ EXT (BFD_RELOC_SPARC_PC22, 18);
+ EXT (BFD_RELOC_SPARC_WPLT30, 19);
+ EXT (BFD_RELOC_SPARC_REV32, 26);
+ default:
+ return NULL;
}
else
- /* std relocs */
+ /* std relocs. */
switch (code)
{
+ STD (BFD_RELOC_8, 0);
STD (BFD_RELOC_16, 1);
STD (BFD_RELOC_32, 2);
STD (BFD_RELOC_8_PCREL, 4);
STD (BFD_RELOC_32_PCREL, 6);
STD (BFD_RELOC_16_BASEREL, 9);
STD (BFD_RELOC_32_BASEREL, 10);
- default: return (CONST struct reloc_howto_struct *) 0;
+ default:
+ return NULL;
}
}
+reloc_howto_type *
+NAME (aout, reloc_name_lookup) (bfd *abfd, const char *r_name)
+{
+ unsigned int i, size;
+ reloc_howto_type *howto_table;
+
+ if (obj_reloc_entry_size (abfd) == RELOC_EXT_SIZE)
+ {
+ howto_table = howto_table_ext;
+ size = sizeof (howto_table_ext) / sizeof (howto_table_ext[0]);
+ }
+ else
+ {
+ howto_table = howto_table_std;
+ size = sizeof (howto_table_std) / sizeof (howto_table_std[0]);
+ }
+
+ for (i = 0; i < size; i++)
+ if (howto_table[i].name != NULL
+ && strcasecmp (howto_table[i].name, r_name) == 0)
+ return &howto_table[i];
+
+ return NULL;
+}
+
/*
SUBSECTION
Internal entry points
@file{aoutx.h} exports several routines for accessing the
contents of an a.out file, which are gathered and exported in
turn by various format specific files (eg sunos.c).
-
*/
/*
SYNOPSIS
void aout_@var{size}_swap_exec_header_in,
- (bfd *abfd,
- struct external_exec *raw_bytes,
- struct internal_exec *execp);
+ (bfd *abfd,
+ struct external_exec *bytes,
+ struct internal_exec *execp);
DESCRIPTION
Swap the information in an executable header @var{raw_bytes} taken
#ifndef NAME_swap_exec_header_in
void
-NAME(aout,swap_exec_header_in) (abfd, raw_bytes, execp)
- bfd *abfd;
- struct external_exec *raw_bytes;
- struct internal_exec *execp;
+NAME (aout, swap_exec_header_in) (bfd *abfd,
+ struct external_exec *bytes,
+ struct internal_exec *execp)
{
- struct external_exec *bytes = (struct external_exec *)raw_bytes;
-
/* The internal_exec structure has some fields that are unused in this
configuration (IE for i960), so ensure that all such uninitialized
fields are zero'd out. There are places where two of these structs
- are memcmp'd, and thus the contents do matter. */
- memset ((PTR) execp, 0, sizeof (struct internal_exec));
+ are memcmp'd, and thus the contents do matter. */
+ memset ((void *) execp, 0, sizeof (struct internal_exec));
/* Now fill in fields in the execp, from the bytes in the raw data. */
- execp->a_info = bfd_h_get_32 (abfd, bytes->e_info);
+ execp->a_info = H_GET_32 (abfd, bytes->e_info);
execp->a_text = GET_WORD (abfd, bytes->e_text);
execp->a_data = GET_WORD (abfd, bytes->e_data);
execp->a_bss = GET_WORD (abfd, bytes->e_bss);
execp->a_trsize = GET_WORD (abfd, bytes->e_trsize);
execp->a_drsize = GET_WORD (abfd, bytes->e_drsize);
}
-#define NAME_swap_exec_header_in NAME(aout,swap_exec_header_in)
+#define NAME_swap_exec_header_in NAME (aout, swap_exec_header_in)
#endif
/*
@var{execp} into the buffer @var{raw_bytes} ready for writing to disk.
*/
void
-NAME(aout,swap_exec_header_out) (abfd, execp, raw_bytes)
- bfd *abfd;
- struct internal_exec *execp;
- struct external_exec *raw_bytes;
+NAME (aout, swap_exec_header_out) (bfd *abfd,
+ struct internal_exec *execp,
+ struct external_exec *bytes)
{
- struct external_exec *bytes = (struct external_exec *)raw_bytes;
-
- /* Now fill in fields in the raw data, from the fields in the exec struct. */
- bfd_h_put_32 (abfd, execp->a_info , bytes->e_info);
+ /* Now fill in fields in the raw data, from the fields in the exec struct. */
+ H_PUT_32 (abfd, execp->a_info , bytes->e_info);
PUT_WORD (abfd, execp->a_text , bytes->e_text);
PUT_WORD (abfd, execp->a_data , bytes->e_data);
PUT_WORD (abfd, execp->a_bss , bytes->e_bss);
/* Make all the section for an a.out file. */
-boolean
-NAME(aout,make_sections) (abfd)
- bfd *abfd;
+bfd_boolean
+NAME (aout, make_sections) (bfd *abfd)
{
- if (obj_textsec (abfd) == (asection *) NULL
- && bfd_make_section (abfd, ".text") == (asection *) NULL)
- return false;
- if (obj_datasec (abfd) == (asection *) NULL
- && bfd_make_section (abfd, ".data") == (asection *) NULL)
- return false;
- if (obj_bsssec (abfd) == (asection *) NULL
- && bfd_make_section (abfd, ".bss") == (asection *) NULL)
- return false;
- return true;
+ if (obj_textsec (abfd) == NULL && bfd_make_section (abfd, ".text") == NULL)
+ return FALSE;
+ if (obj_datasec (abfd) == NULL && bfd_make_section (abfd, ".data") == NULL)
+ return FALSE;
+ if (obj_bsssec (abfd) == NULL && bfd_make_section (abfd, ".bss") == NULL)
+ return FALSE;
+ return TRUE;
}
/*
SYNOPSIS
const bfd_target *aout_@var{size}_some_aout_object_p
(bfd *abfd,
- const bfd_target *(*callback_to_real_object_p)());
+ struct internal_exec *execp,
+ const bfd_target *(*callback_to_real_object_p) (bfd *));
DESCRIPTION
Some a.out variant thinks that the file open in @var{abfd}
*/
const bfd_target *
-NAME(aout,some_aout_object_p) (abfd, execp, callback_to_real_object_p)
- bfd *abfd;
- struct internal_exec *execp;
- const bfd_target *(*callback_to_real_object_p) PARAMS ((bfd *));
+NAME (aout, some_aout_object_p) (bfd *abfd,
+ struct internal_exec *execp,
+ const bfd_target *(*callback_to_real_object_p) (bfd *))
{
struct aout_data_struct *rawptr, *oldrawptr;
const bfd_target *result;
+ bfd_size_type amt = sizeof (* rawptr);
- rawptr = (struct aout_data_struct *) bfd_zalloc (abfd, sizeof (struct aout_data_struct ));
- if (rawptr == NULL) {
- bfd_set_error (bfd_error_no_memory);
- return 0;
- }
+ rawptr = (struct aout_data_struct *) bfd_zalloc (abfd, amt);
+ if (rawptr == NULL)
+ return NULL;
oldrawptr = abfd->tdata.aout_data;
abfd->tdata.aout_data = rawptr;
- /* Copy the contents of the old tdata struct.
- In particular, we want the subformat, since for hpux it was set in
- hp300hpux.c:swap_exec_header_in and will be used in
- hp300hpux.c:callback. */
+ /* Copy the contents of the old tdata struct. */
if (oldrawptr != NULL)
*abfd->tdata.aout_data = *oldrawptr;
abfd->tdata.aout_data->a.hdr = &rawptr->e;
- *(abfd->tdata.aout_data->a.hdr) = *execp; /* Copy in the internal_exec struct */
+ /* Copy in the internal_exec struct. */
+ *(abfd->tdata.aout_data->a.hdr) = *execp;
execp = abfd->tdata.aout_data->a.hdr;
- /* Set the file flags */
- abfd->flags = NO_FLAGS;
+ /* Set the file flags. */
+ abfd->flags = BFD_NO_FLAGS;
if (execp->a_drsize || execp->a_trsize)
abfd->flags |= HAS_RELOC;
- /* Setting of EXEC_P has been deferred to the bottom of this function */
+ /* Setting of EXEC_P has been deferred to the bottom of this function. */
if (execp->a_syms)
abfd->flags |= HAS_LINENO | HAS_DEBUG | HAS_SYMS | HAS_LOCALS;
- if (N_DYNAMIC(*execp))
+ if (N_DYNAMIC (execp))
abfd->flags |= DYNAMIC;
- if (N_MAGIC (*execp) == ZMAGIC)
+ if (N_MAGIC (execp) == ZMAGIC)
{
abfd->flags |= D_PAGED | WP_TEXT;
adata (abfd).magic = z_magic;
}
- else if (N_MAGIC (*execp) == QMAGIC)
+ else if (N_MAGIC (execp) == QMAGIC)
{
abfd->flags |= D_PAGED | WP_TEXT;
adata (abfd).magic = z_magic;
adata (abfd).subformat = q_magic_format;
}
- else if (N_MAGIC (*execp) == NMAGIC)
+ else if (N_MAGIC (execp) == NMAGIC)
{
abfd->flags |= WP_TEXT;
adata (abfd).magic = n_magic;
}
- else if (N_MAGIC (*execp) == OMAGIC
- || N_MAGIC (*execp) == BMAGIC)
+ else if (N_MAGIC (execp) == OMAGIC
+ || N_MAGIC (execp) == BMAGIC)
adata (abfd).magic = o_magic;
else
- {
- /* Should have been checked with N_BADMAG before this routine
- was called. */
- abort ();
- }
+ /* Should have been checked with N_BADMAG before this routine
+ was called. */
+ abort ();
bfd_get_start_address (abfd) = execp->a_entry;
- obj_aout_symbols (abfd) = (aout_symbol_type *)NULL;
+ obj_aout_symbols (abfd) = NULL;
bfd_get_symcount (abfd) = execp->a_syms / sizeof (struct external_nlist);
/* The default relocation entry size is that of traditional V7 Unix. */
obj_reloc_entry_size (abfd) = RELOC_STD_SIZE;
- /* The default symbol entry size is that of traditional Unix. */
+ /* The default symbol entry size is that of traditional Unix. */
obj_symbol_entry_size (abfd) = EXTERNAL_NLIST_SIZE;
+#ifdef USE_MMAP
+ bfd_init_window (&obj_aout_sym_window (abfd));
+ bfd_init_window (&obj_aout_string_window (abfd));
+#endif
obj_aout_external_syms (abfd) = NULL;
obj_aout_external_strings (abfd) = NULL;
obj_aout_sym_hashes (abfd) = NULL;
- if (! NAME(aout,make_sections) (abfd))
- return NULL;
+ if (! NAME (aout, make_sections) (abfd))
+ goto error_ret;
- obj_datasec (abfd)->_raw_size = execp->a_data;
- obj_bsssec (abfd)->_raw_size = execp->a_bss;
+ obj_datasec (abfd)->size = execp->a_data;
+ obj_bsssec (abfd)->size = execp->a_bss;
obj_textsec (abfd)->flags =
(execp->a_trsize != 0
struct exec *execp = exec_hdr (abfd);
- obj_textsec (abfd)->size = N_TXTSIZE(*execp);
- obj_textsec (abfd)->raw_size = N_TXTSIZE(*execp);
- /* data and bss are already filled in since they're so standard */
+ obj_textsec (abfd)->size = N_TXTSIZE (execp);
+ /* Data and bss are already filled in since they're so standard. */
- /* The virtual memory addresses of the sections */
- obj_textsec (abfd)->vma = N_TXTADDR(*execp);
- obj_datasec (abfd)->vma = N_DATADDR(*execp);
- obj_bsssec (abfd)->vma = N_BSSADDR(*execp);
+ /* The virtual memory addresses of the sections. */
+ obj_textsec (abfd)->vma = N_TXTADDR (execp);
+ obj_datasec (abfd)->vma = N_DATADDR (execp);
+ obj_bsssec (abfd)->vma = N_BSSADDR (execp);
- /* The file offsets of the sections */
- obj_textsec (abfd)->filepos = N_TXTOFF(*execp);
- obj_datasec (abfd)->filepos = N_DATOFF(*execp);
+ /* The file offsets of the sections. */
+ obj_textsec (abfd)->filepos = N_TXTOFF (execp);
+ obj_datasec (abfd)->filepos = N_DATOFF (execp);
- /* The file offsets of the relocation info */
- obj_textsec (abfd)->rel_filepos = N_TRELOFF(*execp);
- obj_datasec (abfd)->rel_filepos = N_DRELOFF(*execp);
+ /* The file offsets of the relocation info. */
+ obj_textsec (abfd)->rel_filepos = N_TRELOFF (execp);
+ obj_datasec (abfd)->rel_filepos = N_DRELOFF (execp);
/* The file offsets of the string table and symbol table. */
- obj_str_filepos (abfd) = N_STROFF (*execp);
- obj_sym_filepos (abfd) = N_SYMOFF (*execp);
+ obj_str_filepos (abfd) = N_STROFF (execp);
+ obj_sym_filepos (abfd) = N_SYMOFF (execp);
/* Determine the architecture and machine type of the object file. */
- switch (N_MACHTYPE (*exec_hdr (abfd))) {
- default:
- abfd->obj_arch = bfd_arch_obscure;
- break;
- }
+ switch (N_MACHTYPE (exec_hdr (abfd)))
+ {
+ default:
+ abfd->obj_arch = bfd_arch_obscure;
+ break;
+ }
- adata(abfd)->page_size = PAGE_SIZE;
- adata(abfd)->segment_size = SEGMENT_SIZE;
- adata(abfd)->exec_bytes_size = EXEC_BYTES_SIZE;
+ adata (abfd)->page_size = TARGET_PAGE_SIZE;
+ adata (abfd)->segment_size = SEGMENT_SIZE;
+ adata (abfd)->exec_bytes_size = EXEC_BYTES_SIZE;
return abfd->xvec;
header, should cope with them in this callback as well. */
#endif /* DOCUMENTATION */
- result = (*callback_to_real_object_p)(abfd);
+ result = (*callback_to_real_object_p) (abfd);
-#ifdef STAT_FOR_EXEC
- /* The original heuristic doesn't work in some important cases. The
- * a.out file has no information about the text start address. For
- * files (like kernels) linked to non-standard addresses (ld -Ttext
- * nnn) the entry point may not be between the default text start
- * (obj_textsec(abfd)->vma) and (obj_textsec(abfd)->vma) + text size
- * This is not just a mach issue. Many kernels are loaded at non
- * standard addresses.
- */
- {
- struct stat stat_buf;
- if (abfd->iostream
- && (fstat(fileno((FILE *) (abfd->iostream)), &stat_buf) == 0)
- && ((stat_buf.st_mode & 0111) != 0))
- abfd->flags |= EXEC_P;
- }
-#else /* ! defined (STAT_FOR_EXEC) */
/* Now that the segment addresses have been worked out, take a better
guess at whether the file is executable. If the entry point
is within the text segment, assume it is. (This makes files
executable even if their entry point address is 0, as long as
- their text starts at zero.)
-
- At some point we should probably break down and stat the file and
- declare it executable if (one of) its 'x' bits are on... */
- if ((execp->a_entry >= obj_textsec(abfd)->vma) &&
- (execp->a_entry < obj_textsec(abfd)->vma + obj_textsec(abfd)->_raw_size))
+ their text starts at zero.).
+
+ This test had to be changed to deal with systems where the text segment
+ runs at a different location than the default. The problem is that the
+ entry address can appear to be outside the text segment, thus causing an
+ erroneous conclusion that the file isn't executable.
+
+ To fix this, we now accept any non-zero entry point as an indication of
+ executability. This will work most of the time, since only the linker
+ sets the entry point, and that is likely to be non-zero for most systems. */
+
+ if (execp->a_entry != 0
+ || (execp->a_entry >= obj_textsec (abfd)->vma
+ && execp->a_entry < (obj_textsec (abfd)->vma
+ + obj_textsec (abfd)->size)
+ && execp->a_trsize == 0
+ && execp->a_drsize == 0))
abfd->flags |= EXEC_P;
-#endif /* ! defined (STAT_FOR_EXEC) */
- if (result)
- {
-#if 0 /* These should be set correctly anyways. */
- abfd->sections = obj_textsec (abfd);
- obj_textsec (abfd)->next = obj_datasec (abfd);
- obj_datasec (abfd)->next = obj_bsssec (abfd);
-#endif
- }
+#ifdef STAT_FOR_EXEC
else
{
- free (rawptr);
- abfd->tdata.aout_data = oldrawptr;
+ struct stat stat_buf;
+
+ /* The original heuristic doesn't work in some important cases.
+ The a.out file has no information about the text start
+ address. For files (like kernels) linked to non-standard
+ addresses (ld -Ttext nnn) the entry point may not be between
+ the default text start (obj_textsec(abfd)->vma) and
+ (obj_textsec(abfd)->vma) + text size. This is not just a mach
+ issue. Many kernels are loaded at non standard addresses. */
+ if (abfd->iostream != NULL
+ && (abfd->flags & BFD_IN_MEMORY) == 0
+ && (fstat (fileno ((FILE *) (abfd->iostream)), &stat_buf) == 0)
+ && ((stat_buf.st_mode & 0111) != 0))
+ abfd->flags |= EXEC_P;
}
- return result;
+#endif /* STAT_FOR_EXEC */
+
+ if (result)
+ return result;
+
+ error_ret:
+ bfd_release (abfd, rawptr);
+ abfd->tdata.aout_data = oldrawptr;
+ return NULL;
}
/*
aout_@var{size}_mkobject
SYNOPSIS
- boolean aout_@var{size}_mkobject, (bfd *abfd);
+ bfd_boolean aout_@var{size}_mkobject, (bfd *abfd);
DESCRIPTION
Initialize BFD @var{abfd} for use with a.out files.
*/
-boolean
-NAME(aout,mkobject) (abfd)
- bfd *abfd;
+bfd_boolean
+NAME (aout, mkobject) (bfd *abfd)
{
- struct aout_data_struct *rawptr;
+ struct aout_data_struct *rawptr;
+ bfd_size_type amt = sizeof (* rawptr);
bfd_set_error (bfd_error_system_call);
- /* Use an intermediate variable for clarity */
- rawptr = (struct aout_data_struct *)bfd_zalloc (abfd, sizeof (struct aout_data_struct ));
-
- if (rawptr == NULL) {
- bfd_set_error (bfd_error_no_memory);
- return false;
- }
+ rawptr = (struct aout_data_struct *) bfd_zalloc (abfd, amt);
+ if (rawptr == NULL)
+ return FALSE;
abfd->tdata.aout_data = rawptr;
exec_hdr (abfd) = &(rawptr->e);
- obj_textsec (abfd) = (asection *)NULL;
- obj_datasec (abfd) = (asection *)NULL;
- obj_bsssec (abfd) = (asection *)NULL;
+ obj_textsec (abfd) = NULL;
+ obj_datasec (abfd) = NULL;
+ obj_bsssec (abfd) = NULL;
- return true;
+ return TRUE;
}
-
/*
FUNCTION
aout_@var{size}_machine_type
SYNOPSIS
enum machine_type aout_@var{size}_machine_type
(enum bfd_architecture arch,
- unsigned long machine));
+ unsigned long machine,
+ bfd_boolean *unknown);
DESCRIPTION
Keep track of machine architecture and machine type for
*/
enum machine_type
-NAME(aout,machine_type) (arch, machine, unknown)
- enum bfd_architecture arch;
- unsigned long machine;
- boolean *unknown;
+NAME (aout, machine_type) (enum bfd_architecture arch,
+ unsigned long machine,
+ bfd_boolean *unknown)
{
enum machine_type arch_flags;
arch_flags = M_UNKNOWN;
- *unknown = true;
-
- 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; *unknown = false; 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;
-
- case bfd_arch_mips:
- switch (machine) {
- case 0:
- case 2000:
- case 3000: arch_flags = M_MIPS1; break;
- case 4000:
- case 4400:
- case 6000: arch_flags = M_MIPS2; break;
- default: arch_flags = M_UNKNOWN; break;
- }
- break;
-
- case bfd_arch_ns32k:
- switch (machine) {
- case 0: arch_flags = M_NS32532; break;
- case 32032: arch_flags = M_NS32032; break;
- case 32532: arch_flags = M_NS32532; break;
- default: arch_flags = M_UNKNOWN; break;
- }
- break;
+ *unknown = TRUE;
- default:
- arch_flags = M_UNKNOWN;
- }
+ switch (arch)
+ {
+ case bfd_arch_sparc:
+ if (machine == 0
+ || machine == bfd_mach_sparc
+ || machine == bfd_mach_sparc_sparclite
+ || machine == bfd_mach_sparc_sparclite_le
+ || machine == bfd_mach_sparc_v8plus
+ || machine == bfd_mach_sparc_v8plusa
+ || machine == bfd_mach_sparc_v8plusb
+ || machine == bfd_mach_sparc_v8plusc
+ || machine == bfd_mach_sparc_v8plusd
+ || machine == bfd_mach_sparc_v8pluse
+ || machine == bfd_mach_sparc_v8plusv
+ || machine == bfd_mach_sparc_v8plusm
+ || machine == bfd_mach_sparc_v8plusm8
+ || machine == bfd_mach_sparc_v9
+ || machine == bfd_mach_sparc_v9a
+ || machine == bfd_mach_sparc_v9b
+ || machine == bfd_mach_sparc_v9c
+ || machine == bfd_mach_sparc_v9d
+ || machine == bfd_mach_sparc_v9e
+ || machine == bfd_mach_sparc_v9v
+ || machine == bfd_mach_sparc_v9m
+ || machine == bfd_mach_sparc_v9m8)
+ arch_flags = M_SPARC;
+ else if (machine == bfd_mach_sparc_sparclet)
+ arch_flags = M_SPARCLET;
+ break;
+
+ case bfd_arch_i386:
+ if (machine == 0
+ || machine == bfd_mach_i386_i386
+ || machine == bfd_mach_i386_i386_intel_syntax)
+ arch_flags = M_386;
+ break;
+
+ case bfd_arch_arm:
+ if (machine == 0)
+ arch_flags = M_ARM;
+ break;
+
+ case bfd_arch_mips:
+ switch (machine)
+ {
+ case 0:
+ case bfd_mach_mips3000:
+ case bfd_mach_mips3900:
+ arch_flags = M_MIPS1;
+ break;
+ case bfd_mach_mips6000:
+ arch_flags = M_MIPS2;
+ break;
+ case bfd_mach_mips4000:
+ case bfd_mach_mips4010:
+ case bfd_mach_mips4100:
+ case bfd_mach_mips4300:
+ case bfd_mach_mips4400:
+ case bfd_mach_mips4600:
+ case bfd_mach_mips4650:
+ case bfd_mach_mips8000:
+ case bfd_mach_mips9000:
+ case bfd_mach_mips10000:
+ case bfd_mach_mips12000:
+ case bfd_mach_mips14000:
+ case bfd_mach_mips16000:
+ case bfd_mach_mips16:
+ case bfd_mach_mipsisa32:
+ case bfd_mach_mipsisa32r2:
+ case bfd_mach_mipsisa32r3:
+ case bfd_mach_mipsisa32r5:
+ case bfd_mach_mipsisa32r6:
+ case bfd_mach_mips5:
+ case bfd_mach_mipsisa64:
+ case bfd_mach_mipsisa64r2:
+ case bfd_mach_mipsisa64r3:
+ case bfd_mach_mipsisa64r5:
+ case bfd_mach_mipsisa64r6:
+ case bfd_mach_mips_sb1:
+ case bfd_mach_mips_xlr:
+ /* FIXME: These should be MIPS3, MIPS4, MIPS16, MIPS32, etc. */
+ arch_flags = M_MIPS2;
+ break;
+ default:
+ arch_flags = M_UNKNOWN;
+ break;
+ }
+ break;
+
+ case bfd_arch_ns32k:
+ switch (machine)
+ {
+ case 0: arch_flags = M_NS32532; break;
+ case 32032: arch_flags = M_NS32032; break;
+ case 32532: arch_flags = M_NS32532; break;
+ default: arch_flags = M_UNKNOWN; break;
+ }
+ break;
+
+ case bfd_arch_vax:
+ *unknown = FALSE;
+ break;
+
+ case bfd_arch_cris:
+ if (machine == 0 || machine == 255)
+ arch_flags = M_CRIS;
+ break;
+
+ default:
+ arch_flags = M_UNKNOWN;
+ }
if (arch_flags != M_UNKNOWN)
- *unknown = false;
+ *unknown = FALSE;
return arch_flags;
}
-
/*
FUNCTION
aout_@var{size}_set_arch_mach
SYNOPSIS
- boolean aout_@var{size}_set_arch_mach,
+ bfd_boolean aout_@var{size}_set_arch_mach,
(bfd *,
enum bfd_architecture arch,
- unsigned long machine));
+ unsigned long machine);
DESCRIPTION
Set the architecture and the machine of the BFD @var{abfd} to the
can support the architecture required.
*/
-boolean
-NAME(aout,set_arch_mach) (abfd, arch, machine)
- bfd *abfd;
- enum bfd_architecture arch;
- unsigned long machine;
+bfd_boolean
+NAME (aout, set_arch_mach) (bfd *abfd,
+ enum bfd_architecture arch,
+ unsigned long machine)
{
if (! bfd_default_set_arch_mach (abfd, arch, machine))
- return false;
+ return FALSE;
if (arch != bfd_arch_unknown)
{
- boolean unknown;
+ bfd_boolean unknown;
- NAME(aout,machine_type) (arch, machine, &unknown);
+ NAME (aout, machine_type) (arch, machine, &unknown);
if (unknown)
- return false;
+ return FALSE;
}
- /* Determine the size of a relocation entry */
- switch (arch) {
- case bfd_arch_sparc:
- case bfd_arch_a29k:
- case bfd_arch_mips:
- obj_reloc_entry_size (abfd) = RELOC_EXT_SIZE;
- break;
- default:
- obj_reloc_entry_size (abfd) = RELOC_STD_SIZE;
- break;
- }
+ /* Determine the size of a relocation entry. */
+ switch (arch)
+ {
+ case bfd_arch_sparc:
+ case bfd_arch_mips:
+ obj_reloc_entry_size (abfd) = RELOC_EXT_SIZE;
+ break;
+ default:
+ obj_reloc_entry_size (abfd) = RELOC_STD_SIZE;
+ break;
+ }
- return (*aout_backend_info(abfd)->set_sizes) (abfd);
+ return (*aout_backend_info (abfd)->set_sizes) (abfd);
}
static void
-adjust_o_magic (abfd, execp)
- bfd *abfd;
- struct internal_exec *execp;
+adjust_o_magic (bfd *abfd, struct internal_exec *execp)
{
file_ptr pos = adata (abfd).exec_bytes_size;
bfd_vma vma = 0;
int pad = 0;
/* Text. */
- obj_textsec(abfd)->filepos = pos;
- pos += obj_textsec(abfd)->_raw_size;
- vma += obj_textsec(abfd)->_raw_size;
+ obj_textsec (abfd)->filepos = pos;
+ if (!obj_textsec (abfd)->user_set_vma)
+ obj_textsec (abfd)->vma = vma;
+ else
+ vma = obj_textsec (abfd)->vma;
+
+ pos += obj_textsec (abfd)->size;
+ vma += obj_textsec (abfd)->size;
/* Data. */
- if (!obj_datasec(abfd)->user_set_vma)
+ if (!obj_datasec (abfd)->user_set_vma)
{
-#if 0 /* ?? Does alignment in the file image really matter? */
- pad = align_power (vma, obj_datasec(abfd)->alignment_power) - vma;
-#endif
- obj_textsec(abfd)->_raw_size += pad;
+ obj_textsec (abfd)->size += pad;
pos += pad;
vma += pad;
- obj_datasec(abfd)->vma = vma;
+ obj_datasec (abfd)->vma = vma;
}
- obj_datasec(abfd)->filepos = pos;
- pos += obj_datasec(abfd)->_raw_size;
- vma += obj_datasec(abfd)->_raw_size;
+ else
+ vma = obj_datasec (abfd)->vma;
+ obj_datasec (abfd)->filepos = pos;
+ pos += obj_datasec (abfd)->size;
+ vma += obj_datasec (abfd)->size;
/* BSS. */
- if (!obj_bsssec(abfd)->user_set_vma)
+ if (!obj_bsssec (abfd)->user_set_vma)
{
-#if 0
- pad = align_power (vma, obj_bsssec(abfd)->alignment_power) - vma;
-#endif
- obj_datasec(abfd)->_raw_size += pad;
+ obj_datasec (abfd)->size += pad;
pos += pad;
vma += pad;
- obj_bsssec(abfd)->vma = vma;
+ obj_bsssec (abfd)->vma = vma;
+ }
+ else
+ {
+ /* The VMA of the .bss section is set by the VMA of the
+ .data section plus the size of the .data section. We may
+ need to add padding bytes to make this true. */
+ pad = obj_bsssec (abfd)->vma - vma;
+ if (pad > 0)
+ {
+ obj_datasec (abfd)->size += pad;
+ pos += pad;
+ }
}
- obj_bsssec(abfd)->filepos = pos;
+ obj_bsssec (abfd)->filepos = pos;
/* Fix up the exec header. */
- execp->a_text = obj_textsec(abfd)->_raw_size;
- execp->a_data = obj_datasec(abfd)->_raw_size;
- execp->a_bss = obj_bsssec(abfd)->_raw_size;
- N_SET_MAGIC (*execp, OMAGIC);
+ execp->a_text = obj_textsec (abfd)->size;
+ execp->a_data = obj_datasec (abfd)->size;
+ execp->a_bss = obj_bsssec (abfd)->size;
+ N_SET_MAGIC (execp, OMAGIC);
}
static void
-adjust_z_magic (abfd, execp)
- bfd *abfd;
- struct internal_exec *execp;
+adjust_z_magic (bfd *abfd, struct internal_exec *execp)
{
bfd_size_type data_pad, text_pad;
file_ptr text_end;
- CONST struct aout_backend_data *abdp;
- int ztih; /* Nonzero if text includes exec header. */
-
+ const struct aout_backend_data *abdp;
+ /* TRUE if text includes exec header. */
+ bfd_boolean ztih;
+
abdp = aout_backend_info (abfd);
/* Text. */
ztih = (abdp != NULL
&& (abdp->text_includes_header
|| obj_aout_subformat (abfd) == q_magic_format));
- obj_textsec(abfd)->filepos = (ztih
- ? adata(abfd).exec_bytes_size
- : adata(abfd).zmagic_disk_block_size);
- if (! obj_textsec(abfd)->user_set_vma)
- /* ?? Do we really need to check for relocs here? */
- obj_textsec(abfd)->vma = ((abfd->flags & HAS_RELOC)
- ? 0
- : (ztih
- ? (abdp->default_text_vma
- + adata(abfd).exec_bytes_size)
- : abdp->default_text_vma));
- /* Could take strange alignment of text section into account here? */
-
+ obj_textsec (abfd)->filepos = (ztih
+ ? adata (abfd).exec_bytes_size
+ : adata (abfd).zmagic_disk_block_size);
+ if (! obj_textsec (abfd)->user_set_vma)
+ {
+ /* ?? Do we really need to check for relocs here? */
+ obj_textsec (abfd)->vma = ((abfd->flags & HAS_RELOC)
+ ? 0
+ : (ztih
+ ? (abdp->default_text_vma
+ + adata (abfd).exec_bytes_size)
+ : abdp->default_text_vma));
+ text_pad = 0;
+ }
+ else
+ {
+ /* The .text section is being loaded at an unusual address. We
+ may need to pad it such that the .data section starts at a page
+ boundary. */
+ if (ztih)
+ text_pad = ((obj_textsec (abfd)->filepos - obj_textsec (abfd)->vma)
+ & (adata (abfd).page_size - 1));
+ else
+ text_pad = ((- obj_textsec (abfd)->vma)
+ & (adata (abfd).page_size - 1));
+ }
+
/* Find start of data. */
if (ztih)
{
- text_end = obj_textsec (abfd)->filepos + obj_textsec (abfd)->_raw_size;
- text_pad = BFD_ALIGN (text_end, adata (abfd).page_size) - text_end;
+ text_end = obj_textsec (abfd)->filepos + obj_textsec (abfd)->size;
+ text_pad += BFD_ALIGN (text_end, adata (abfd).page_size) - text_end;
}
else
{
/* Note that if page_size == zmagic_disk_block_size, then
filepos == page_size, and this case is the same as the ztih
case. */
- text_end = obj_textsec (abfd)->_raw_size;
- text_pad = BFD_ALIGN (text_end, adata (abfd).page_size) - text_end;
+ text_end = obj_textsec (abfd)->size;
+ text_pad += BFD_ALIGN (text_end, adata (abfd).page_size) - text_end;
text_end += obj_textsec (abfd)->filepos;
}
- obj_textsec(abfd)->_raw_size += text_pad;
+ obj_textsec (abfd)->size += text_pad;
text_end += text_pad;
/* Data. */
- if (!obj_datasec(abfd)->user_set_vma)
+ if (!obj_datasec (abfd)->user_set_vma)
{
bfd_vma vma;
- vma = obj_textsec(abfd)->vma + obj_textsec(abfd)->_raw_size;
- obj_datasec(abfd)->vma = BFD_ALIGN (vma, adata(abfd).segment_size);
+ vma = obj_textsec (abfd)->vma + obj_textsec (abfd)->size;
+ obj_datasec (abfd)->vma = BFD_ALIGN (vma, adata (abfd).segment_size);
}
if (abdp && abdp->zmagic_mapped_contiguous)
{
- text_pad = (obj_datasec(abfd)->vma
- - obj_textsec(abfd)->vma
- - obj_textsec(abfd)->_raw_size);
- obj_textsec(abfd)->_raw_size += text_pad;
+ asection * text = obj_textsec (abfd);
+ asection * data = obj_datasec (abfd);
+
+ text_pad = data->vma - (text->vma + text->size);
+ /* Only pad the text section if the data
+ section is going to be placed after it. */
+ if (text_pad > 0)
+ text->size += text_pad;
}
- obj_datasec(abfd)->filepos = (obj_textsec(abfd)->filepos
- + obj_textsec(abfd)->_raw_size);
-
+ obj_datasec (abfd)->filepos = (obj_textsec (abfd)->filepos
+ + obj_textsec (abfd)->size);
+
/* Fix up exec header while we're at it. */
- execp->a_text = obj_textsec(abfd)->_raw_size;
+ execp->a_text = obj_textsec (abfd)->size;
if (ztih && (!abdp || (abdp && !abdp->exec_header_not_counted)))
- execp->a_text += adata(abfd).exec_bytes_size;
+ execp->a_text += adata (abfd).exec_bytes_size;
if (obj_aout_subformat (abfd) == q_magic_format)
- N_SET_MAGIC (*execp, QMAGIC);
+ N_SET_MAGIC (execp, QMAGIC);
else
- N_SET_MAGIC (*execp, ZMAGIC);
+ N_SET_MAGIC (execp, ZMAGIC);
/* Spec says data section should be rounded up to page boundary. */
- obj_datasec(abfd)->_raw_size
- = align_power (obj_datasec(abfd)->_raw_size,
- obj_bsssec(abfd)->alignment_power);
- execp->a_data = BFD_ALIGN (obj_datasec(abfd)->_raw_size,
- adata(abfd).page_size);
- data_pad = execp->a_data - obj_datasec(abfd)->_raw_size;
+ obj_datasec (abfd)->size
+ = align_power (obj_datasec (abfd)->size,
+ obj_bsssec (abfd)->alignment_power);
+ execp->a_data = BFD_ALIGN (obj_datasec (abfd)->size,
+ adata (abfd).page_size);
+ data_pad = execp->a_data - obj_datasec (abfd)->size;
/* BSS. */
- if (!obj_bsssec(abfd)->user_set_vma)
- obj_bsssec(abfd)->vma = (obj_datasec(abfd)->vma
- + obj_datasec(abfd)->_raw_size);
+ if (!obj_bsssec (abfd)->user_set_vma)
+ obj_bsssec (abfd)->vma = (obj_datasec (abfd)->vma
+ + obj_datasec (abfd)->size);
/* If the BSS immediately follows the data section and extra space
in the page is left after the data section, fudge data
in the header so that the bss section looks smaller by that
(Note that a linker script, as well as the above assignment,
could have explicitly set the BSS vma to immediately follow
the data section.) */
- if (align_power (obj_bsssec(abfd)->vma, obj_bsssec(abfd)->alignment_power)
- == obj_datasec(abfd)->vma + obj_datasec(abfd)->_raw_size)
- execp->a_bss = (data_pad > obj_bsssec(abfd)->_raw_size) ? 0 :
- obj_bsssec(abfd)->_raw_size - data_pad;
+ if (align_power (obj_bsssec (abfd)->vma, obj_bsssec (abfd)->alignment_power)
+ == obj_datasec (abfd)->vma + obj_datasec (abfd)->size)
+ execp->a_bss = (data_pad > obj_bsssec (abfd)->size
+ ? 0 : obj_bsssec (abfd)->size - data_pad);
else
- execp->a_bss = obj_bsssec(abfd)->_raw_size;
+ execp->a_bss = obj_bsssec (abfd)->size;
}
static void
-adjust_n_magic (abfd, execp)
- bfd *abfd;
- struct internal_exec *execp;
+adjust_n_magic (bfd *abfd, struct internal_exec *execp)
{
- file_ptr pos = adata(abfd).exec_bytes_size;
+ file_ptr pos = adata (abfd).exec_bytes_size;
bfd_vma vma = 0;
int pad;
-
+
/* Text. */
- obj_textsec(abfd)->filepos = pos;
- if (!obj_textsec(abfd)->user_set_vma)
- obj_textsec(abfd)->vma = vma;
+ obj_textsec (abfd)->filepos = pos;
+ if (!obj_textsec (abfd)->user_set_vma)
+ obj_textsec (abfd)->vma = vma;
else
- vma = obj_textsec(abfd)->vma;
- pos += obj_textsec(abfd)->_raw_size;
- vma += obj_textsec(abfd)->_raw_size;
+ vma = obj_textsec (abfd)->vma;
+ pos += obj_textsec (abfd)->size;
+ vma += obj_textsec (abfd)->size;
/* Data. */
- obj_datasec(abfd)->filepos = pos;
- if (!obj_datasec(abfd)->user_set_vma)
- obj_datasec(abfd)->vma = BFD_ALIGN (vma, adata(abfd).segment_size);
- vma = obj_datasec(abfd)->vma;
-
+ obj_datasec (abfd)->filepos = pos;
+ if (!obj_datasec (abfd)->user_set_vma)
+ obj_datasec (abfd)->vma = BFD_ALIGN (vma, adata (abfd).segment_size);
+ vma = obj_datasec (abfd)->vma;
+
/* Since BSS follows data immediately, see if it needs alignment. */
- vma += obj_datasec(abfd)->_raw_size;
- pad = align_power (vma, obj_bsssec(abfd)->alignment_power) - vma;
- obj_datasec(abfd)->_raw_size += pad;
- pos += obj_datasec(abfd)->_raw_size;
+ vma += obj_datasec (abfd)->size;
+ pad = align_power (vma, obj_bsssec (abfd)->alignment_power) - vma;
+ obj_datasec (abfd)->size += pad;
+ pos += obj_datasec (abfd)->size;
/* BSS. */
- if (!obj_bsssec(abfd)->user_set_vma)
- obj_bsssec(abfd)->vma = vma;
+ if (!obj_bsssec (abfd)->user_set_vma)
+ obj_bsssec (abfd)->vma = vma;
else
- vma = obj_bsssec(abfd)->vma;
+ vma = obj_bsssec (abfd)->vma;
/* Fix up exec header. */
- execp->a_text = obj_textsec(abfd)->_raw_size;
- execp->a_data = obj_datasec(abfd)->_raw_size;
- execp->a_bss = obj_bsssec(abfd)->_raw_size;
- N_SET_MAGIC (*execp, NMAGIC);
+ execp->a_text = obj_textsec (abfd)->size;
+ execp->a_data = obj_datasec (abfd)->size;
+ execp->a_bss = obj_bsssec (abfd)->size;
+ N_SET_MAGIC (execp, NMAGIC);
}
-boolean
-NAME(aout,adjust_sizes_and_vmas) (abfd, text_size, text_end)
- bfd *abfd;
- bfd_size_type *text_size;
- file_ptr *text_end;
+bfd_boolean
+NAME (aout, adjust_sizes_and_vmas) (bfd *abfd)
{
struct internal_exec *execp = exec_hdr (abfd);
- if (! NAME(aout,make_sections) (abfd))
- return false;
+ if (! NAME (aout, make_sections) (abfd))
+ return FALSE;
- if (adata(abfd).magic != undecided_magic)
- return true;
+ if (adata (abfd).magic != undecided_magic)
+ return TRUE;
- obj_textsec(abfd)->_raw_size =
- align_power(obj_textsec(abfd)->_raw_size,
- obj_textsec(abfd)->alignment_power);
+ obj_textsec (abfd)->size =
+ align_power (obj_textsec (abfd)->size,
+ obj_textsec (abfd)->alignment_power);
- *text_size = obj_textsec (abfd)->_raw_size;
/* Rule (heuristic) for when to pad to a new page. Note that there
are (at least) two ways demand-paged (ZMAGIC) files have been
handled. Most Berkeley-based systems start the text segment at
- (PAGE_SIZE). However, newer versions of SUNOS start the text
+ (TARGET_PAGE_SIZE). However, newer versions of SUNOS start the text
segment right after the exec header; the latter is counted in the
text segment size, and is paged in by the kernel with the rest of
- the text. */
+ the text. */
/* This perhaps isn't the right way to do this, but made it simpler for me
to understand enough to implement it. Better would probably be to go
if (abfd->flags & D_PAGED)
/* Whether or not WP_TEXT is set -- let D_PAGED override. */
- adata(abfd).magic = z_magic;
+ adata (abfd).magic = z_magic;
else if (abfd->flags & WP_TEXT)
- adata(abfd).magic = n_magic;
+ adata (abfd).magic = n_magic;
else
- adata(abfd).magic = o_magic;
+ adata (abfd).magic = o_magic;
#ifdef BFD_AOUT_DEBUG /* requires gcc2 */
#if __GNUC__ >= 2
fprintf (stderr, "%s text=<%x,%x,%x> data=<%x,%x,%x> bss=<%x,%x,%x>\n",
({ char *str;
- switch (adata(abfd).magic) {
- case n_magic: str = "NMAGIC"; break;
- case o_magic: str = "OMAGIC"; break;
- case z_magic: str = "ZMAGIC"; break;
- default: abort ();
- }
+ switch (adata (abfd).magic)
+ {
+ case n_magic: str = "NMAGIC"; break;
+ case o_magic: str = "OMAGIC"; break;
+ case z_magic: str = "ZMAGIC"; break;
+ default: abort ();
+ }
str;
}),
- obj_textsec(abfd)->vma, obj_textsec(abfd)->_raw_size,
- obj_textsec(abfd)->alignment_power,
- obj_datasec(abfd)->vma, obj_datasec(abfd)->_raw_size,
- obj_datasec(abfd)->alignment_power,
- obj_bsssec(abfd)->vma, obj_bsssec(abfd)->_raw_size,
- obj_bsssec(abfd)->alignment_power);
+ obj_textsec (abfd)->vma, obj_textsec (abfd)->size,
+ obj_textsec (abfd)->alignment_power,
+ obj_datasec (abfd)->vma, obj_datasec (abfd)->size,
+ obj_datasec (abfd)->alignment_power,
+ obj_bsssec (abfd)->vma, obj_bsssec (abfd)->size,
+ obj_bsssec (abfd)->alignment_power);
#endif
#endif
- switch (adata(abfd).magic)
+ switch (adata (abfd).magic)
{
case o_magic:
adjust_o_magic (abfd, execp);
#ifdef BFD_AOUT_DEBUG
fprintf (stderr, " text=<%x,%x,%x> data=<%x,%x,%x> bss=<%x,%x>\n",
- obj_textsec(abfd)->vma, obj_textsec(abfd)->_raw_size,
- obj_textsec(abfd)->filepos,
- obj_datasec(abfd)->vma, obj_datasec(abfd)->_raw_size,
- obj_datasec(abfd)->filepos,
- obj_bsssec(abfd)->vma, obj_bsssec(abfd)->_raw_size);
+ obj_textsec (abfd)->vma, obj_textsec (abfd)->size,
+ obj_textsec (abfd)->filepos,
+ obj_datasec (abfd)->vma, obj_datasec (abfd)->size,
+ obj_datasec (abfd)->filepos,
+ obj_bsssec (abfd)->vma, obj_bsssec (abfd)->size);
#endif
- return true;
+ return TRUE;
}
/*
aout_@var{size}_new_section_hook
SYNOPSIS
- boolean aout_@var{size}_new_section_hook,
+ bfd_boolean aout_@var{size}_new_section_hook,
(bfd *abfd,
- asection *newsect));
+ asection *newsect);
DESCRIPTION
Called by the BFD in response to a @code{bfd_make_section}
request.
*/
-boolean
-NAME(aout,new_section_hook) (abfd, newsect)
- bfd *abfd;
- asection *newsect;
+bfd_boolean
+NAME (aout, new_section_hook) (bfd *abfd, asection *newsect)
{
- /* align to double at least */
- newsect->alignment_power = bfd_get_arch_info(abfd)->section_align_power;
-
+ /* Align to double at least. */
+ newsect->alignment_power = bfd_get_arch_info (abfd)->section_align_power;
if (bfd_get_format (abfd) == bfd_object)
- {
- if (obj_textsec(abfd) == NULL && !strcmp(newsect->name, ".text")) {
- obj_textsec(abfd)= newsect;
- newsect->target_index = N_TEXT;
- return true;
- }
-
- if (obj_datasec(abfd) == NULL && !strcmp(newsect->name, ".data")) {
- obj_datasec(abfd) = newsect;
- newsect->target_index = N_DATA;
- return true;
- }
-
- if (obj_bsssec(abfd) == NULL && !strcmp(newsect->name, ".bss")) {
- obj_bsssec(abfd) = newsect;
- newsect->target_index = N_BSS;
- return true;
- }
-
- }
+ {
+ if (obj_textsec (abfd) == NULL && !strcmp (newsect->name, ".text"))
+ {
+ obj_textsec (abfd)= newsect;
+ newsect->target_index = N_TEXT;
+ }
+ else if (obj_datasec (abfd) == NULL && !strcmp (newsect->name, ".data"))
+ {
+ obj_datasec (abfd) = newsect;
+ newsect->target_index = N_DATA;
+ }
+ else if (obj_bsssec (abfd) == NULL && !strcmp (newsect->name, ".bss"))
+ {
+ obj_bsssec (abfd) = newsect;
+ newsect->target_index = N_BSS;
+ }
+ }
- /* We allow more than three sections internally */
- return true;
+ /* We allow more than three sections internally. */
+ return _bfd_generic_new_section_hook (abfd, newsect);
}
-boolean
-NAME(aout,set_section_contents) (abfd, section, location, offset, count)
- bfd *abfd;
- sec_ptr section;
- PTR location;
- file_ptr offset;
- bfd_size_type count;
+bfd_boolean
+NAME (aout, set_section_contents) (bfd *abfd,
+ sec_ptr section,
+ const void * location,
+ file_ptr offset,
+ bfd_size_type count)
{
- file_ptr text_end;
- bfd_size_type text_size;
-
- if (abfd->output_has_begun == false)
- {
- if (NAME(aout,adjust_sizes_and_vmas) (abfd,
- &text_size,
- &text_end) == false)
- return false;
- }
+ if (! abfd->output_has_begun)
+ {
+ if (! NAME (aout, adjust_sizes_and_vmas) (abfd))
+ return FALSE;
+ }
- /* regardless, once we know what we're doing, we might as well get going */
- if (section != obj_bsssec(abfd))
- {
- if (bfd_seek (abfd, section->filepos + offset, SEEK_SET) != 0)
- return false;
+ if (section == obj_bsssec (abfd))
+ {
+ bfd_set_error (bfd_error_no_contents);
+ return FALSE;
+ }
- if (count) {
- return (bfd_write ((PTR)location, 1, count, abfd) == count) ?
- true : false;
+ if (section != obj_textsec (abfd)
+ && section != obj_datasec (abfd))
+ {
+ if (aout_section_merge_with_text_p (abfd, section))
+ section->filepos = obj_textsec (abfd)->filepos +
+ (section->vma - obj_textsec (abfd)->vma);
+ else
+ {
+ _bfd_error_handler
+ /* xgettext:c-format */
+ (_("%pB: can not represent section `%pA' in a.out object file format"),
+ abfd, section);
+ bfd_set_error (bfd_error_nonrepresentable_section);
+ return FALSE;
}
- return true;
- }
- return true;
+ }
+
+ if (count != 0)
+ {
+ if (bfd_seek (abfd, section->filepos + offset, SEEK_SET) != 0
+ || bfd_bwrite (location, count, abfd) != count)
+ return FALSE;
+ }
+
+ return TRUE;
}
\f
/* Read the external symbols from an a.out file. */
-static boolean
-aout_get_external_symbols (abfd)
- bfd *abfd;
+static bfd_boolean
+aout_get_external_symbols (bfd *abfd)
{
- if (obj_aout_external_syms (abfd) == (struct external_nlist *) NULL)
+ if (obj_aout_external_syms (abfd) == NULL)
{
bfd_size_type count;
struct external_nlist *syms;
+ bfd_size_type amt = exec_hdr (abfd)->a_syms;
- count = exec_hdr (abfd)->a_syms / EXTERNAL_NLIST_SIZE;
+ count = amt / EXTERNAL_NLIST_SIZE;
+ if (count == 0)
+ return TRUE; /* Nothing to do. */
+#ifdef USE_MMAP
+ if (! bfd_get_file_window (abfd, obj_sym_filepos (abfd), amt,
+ &obj_aout_sym_window (abfd), TRUE))
+ return FALSE;
+ syms = (struct external_nlist *) obj_aout_sym_window (abfd).data;
+#else
/* We allocate using malloc to make the values easy to free
- later on. If we put them on the obstack it might not be
+ later on. If we put them on the objalloc it might not be
possible to free them. */
- syms = ((struct external_nlist *)
- malloc ((size_t) count * EXTERNAL_NLIST_SIZE));
- if (syms == (struct external_nlist *) NULL && count != 0)
- {
- bfd_set_error (bfd_error_no_memory);
- return false;
- }
+ syms = (struct external_nlist *) bfd_malloc (amt);
+ if (syms == NULL)
+ return FALSE;
if (bfd_seek (abfd, obj_sym_filepos (abfd), SEEK_SET) != 0
- || (bfd_read (syms, 1, exec_hdr (abfd)->a_syms, abfd)
- != exec_hdr (abfd)->a_syms))
+ || bfd_bread (syms, amt, abfd) != amt)
{
free (syms);
- return false;
+ return FALSE;
}
+#endif
obj_aout_external_syms (abfd) = syms;
obj_aout_external_sym_count (abfd) = count;
}
-
+
if (obj_aout_external_strings (abfd) == NULL
&& exec_hdr (abfd)->a_syms != 0)
{
unsigned char string_chars[BYTES_IN_WORD];
bfd_size_type stringsize;
char *strings;
+ bfd_size_type amt = BYTES_IN_WORD;
/* Get the size of the strings. */
if (bfd_seek (abfd, obj_str_filepos (abfd), SEEK_SET) != 0
- || (bfd_read ((PTR) string_chars, BYTES_IN_WORD, 1, abfd)
- != BYTES_IN_WORD))
- return false;
+ || bfd_bread ((void *) string_chars, amt, abfd) != amt)
+ return FALSE;
stringsize = GET_WORD (abfd, string_chars);
-
- strings = (char *) malloc ((size_t) stringsize + 1);
- if (strings == NULL)
+ if (stringsize == 0)
+ stringsize = 1;
+ else if (stringsize < BYTES_IN_WORD
+ || (size_t) stringsize != stringsize)
{
- bfd_set_error (bfd_error_no_memory);
- return false;
+ bfd_set_error (bfd_error_bad_value);
+ return FALSE;
}
- /* Skip space for the string count in the buffer for convenience
- when using indexes. */
- if (bfd_read (strings + BYTES_IN_WORD, 1, stringsize - BYTES_IN_WORD,
- abfd)
- != stringsize - BYTES_IN_WORD)
+#ifdef USE_MMAP
+ if (stringsize >= BYTES_IN_WORD)
+ {
+ if (! bfd_get_file_window (abfd, obj_str_filepos (abfd), stringsize + 1,
+ &obj_aout_string_window (abfd), TRUE))
+ return FALSE;
+ strings = (char *) obj_aout_string_window (abfd).data;
+ }
+ else
+#endif
{
- free (strings);
- return false;
+ strings = (char *) bfd_malloc (stringsize + 1);
+ if (strings == NULL)
+ return FALSE;
+
+ if (stringsize >= BYTES_IN_WORD)
+ {
+ /* Keep the string count in the buffer for convenience
+ when indexing with e_strx. */
+ amt = stringsize - BYTES_IN_WORD;
+ if (bfd_bread (strings + BYTES_IN_WORD, amt, abfd) != amt)
+ {
+ free (strings);
+ return FALSE;
+ }
+ }
}
+ /* Ensure that a zero index yields an empty string. */
+ strings[0] = '\0';
- /* Sanity preservation. */
- strings[stringsize] = '\0';
+ /* Ensure that the string buffer is NUL terminated. */
+ strings[stringsize] = 0;
obj_aout_external_strings (abfd) = strings;
obj_aout_external_string_size (abfd) = stringsize;
}
- return true;
+ return TRUE;
}
/* Translate an a.out symbol into a BFD symbol. The desc, other, type
nlist structure. This function is responsible for setting
symbol->flags and symbol->section, and adjusting symbol->value. */
-static boolean
-translate_from_native_sym_flags (abfd, cache_ptr)
- bfd *abfd;
- aout_symbol_type *cache_ptr;
+static bfd_boolean
+translate_from_native_sym_flags (bfd *abfd, aout_symbol_type *cache_ptr)
{
flagword visible;
asection *sec;
/* This is a debugging symbol. */
-
cache_ptr->symbol.flags = BSF_DEBUGGING;
/* Work out the symbol section. */
cache_ptr->symbol.section = sec;
cache_ptr->symbol.value -= sec->vma;
- return true;
+ return TRUE;
}
/* Get the default visibility. This does not apply to all types, so
case N_SETD: case N_SETD | N_EXT:
case N_SETB: case N_SETB | N_EXT:
{
- asection *section;
- arelent_chain *reloc;
- asection *into_section;
-
- /* This is a set symbol. The name of the symbol is the name
- of the set (e.g., __CTOR_LIST__). The value of the symbol
- is the value to add to the set. We create a section with
- the same name as the symbol, and add a reloc to insert the
- appropriate value into the section.
-
- This action is actually obsolete; it used to make the
- linker do the right thing, but the linker no longer uses
- this function. */
-
- section = bfd_get_section_by_name (abfd, cache_ptr->symbol.name);
- if (section == NULL)
- {
- char *copy;
-
- copy = bfd_alloc (abfd, strlen (cache_ptr->symbol.name) + 1);
- if (copy == NULL)
- {
- bfd_set_error (bfd_error_no_memory);
- return false;
- }
-
- strcpy (copy, cache_ptr->symbol.name);
- section = bfd_make_section (abfd, copy);
- if (section == NULL)
- return false;
- }
-
- reloc = (arelent_chain *) bfd_alloc (abfd, sizeof (arelent_chain));
- if (reloc == NULL)
- {
- bfd_set_error (bfd_error_no_memory);
- return false;
- }
-
- /* Build a relocation entry for the constructor. */
+ /* This code is no longer needed. It used to be used to make
+ the linker handle set symbols, but they are now handled in
+ the add_symbols routine instead. */
switch (cache_ptr->type & N_TYPE)
{
case N_SETA:
- into_section = bfd_abs_section_ptr;
- cache_ptr->type = N_ABS;
+ cache_ptr->symbol.section = bfd_abs_section_ptr;
break;
case N_SETT:
- into_section = obj_textsec (abfd);
- cache_ptr->type = N_TEXT;
+ cache_ptr->symbol.section = obj_textsec (abfd);
break;
case N_SETD:
- into_section = obj_datasec (abfd);
- cache_ptr->type = N_DATA;
+ cache_ptr->symbol.section = obj_datasec (abfd);
break;
case N_SETB:
- into_section = obj_bsssec (abfd);
- cache_ptr->type = N_BSS;
+ cache_ptr->symbol.section = obj_bsssec (abfd);
break;
}
- /* Build a relocation pointing into the constructor section
- pointing at the symbol in the set vector specified. */
- reloc->relent.addend = cache_ptr->symbol.value;
- cache_ptr->symbol.section = into_section;
- reloc->relent.sym_ptr_ptr = into_section->symbol_ptr_ptr;
-
- /* We modify the symbol to belong to a section depending upon
- the name of the symbol, 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 | SEC_RELOC;
-
- section->reloc_count++;
- section->alignment_power = 2;
-
- reloc->next = section->constructor_chain;
- section->constructor_chain = reloc;
- reloc->relent.address = section->_raw_size;
- section->_raw_size += BYTES_IN_WORD;
-
- reloc->relent.howto = CTOR_TABLE_RELOC_HOWTO(abfd);
-
cache_ptr->symbol.flags |= BSF_CONSTRUCTOR;
}
break;
symbol is the symbol to associate the warning with. If a
reference is made to that symbol, a warning is issued. */
cache_ptr->symbol.flags = BSF_DEBUGGING | BSF_WARNING;
-
- /* @@ Stuffing pointers into integers is a no-no. We can
- usually get away with it if the integer is large enough
- though. */
- if (sizeof (cache_ptr + 1) > sizeof (bfd_vma))
- abort ();
- cache_ptr->symbol.value = (bfd_vma) (cache_ptr + 1);
-
cache_ptr->symbol.section = bfd_abs_section_ptr;
-
break;
case N_INDR: case N_INDR | N_EXT:
symbol is the name of the target. A reference to the first
symbol becomes a reference to the second. */
cache_ptr->symbol.flags = BSF_DEBUGGING | BSF_INDIRECT | visible;
-
- /* @@ Stuffing pointers into integers is a no-no. We can
- usually get away with it if the integer is large enough
- though. */
- if (sizeof (cache_ptr + 1) > sizeof (bfd_vma))
- abort ();
- cache_ptr->symbol.value = (bfd_vma) (cache_ptr + 1);
-
cache_ptr->symbol.section = bfd_ind_section_ptr;
-
break;
case N_WEAKU:
break;
}
- return true;
+ return TRUE;
}
/* Set the fields of SYM_POINTER according to CACHE_PTR. */
-static boolean
-translate_to_native_sym_flags (abfd, cache_ptr, sym_pointer)
- bfd *abfd;
- asymbol *cache_ptr;
- struct external_nlist *sym_pointer;
+static bfd_boolean
+translate_to_native_sym_flags (bfd *abfd,
+ asymbol *cache_ptr,
+ struct external_nlist *sym_pointer)
{
bfd_vma value = cache_ptr->value;
+ asection *sec;
+ bfd_vma off;
/* Mask out any existing type bits in case copying from one section
to another. */
sym_pointer->e_type[0] &= ~N_TYPE;
- if (bfd_is_abs_section (bfd_get_section (cache_ptr)))
+ sec = bfd_get_section (cache_ptr);
+ off = 0;
+
+ if (sec == NULL)
+ {
+ /* This case occurs, e.g., for the *DEBUG* section of a COFF
+ file. */
+ _bfd_error_handler
+ /* xgettext:c-format */
+ (_("%pB: can not represent section for symbol `%s' in a.out "
+ "object file format"),
+ abfd,
+ cache_ptr->name != NULL ? cache_ptr->name : _("*unknown*"));
+ bfd_set_error (bfd_error_nonrepresentable_section);
+ return FALSE;
+ }
+
+ if (sec->output_section != NULL)
+ {
+ off = sec->output_offset;
+ sec = sec->output_section;
+ }
+
+ if (bfd_is_abs_section (sec))
sym_pointer->e_type[0] |= N_ABS;
- else if (bfd_get_section (cache_ptr) == obj_textsec (abfd)
- || (bfd_get_section (cache_ptr)->output_section
- == obj_textsec (abfd)))
+ else if (sec == obj_textsec (abfd))
sym_pointer->e_type[0] |= N_TEXT;
- else if (bfd_get_section (cache_ptr) == obj_datasec (abfd)
- || (bfd_get_section (cache_ptr)->output_section
- == obj_datasec (abfd)))
+ else if (sec == obj_datasec (abfd))
sym_pointer->e_type[0] |= N_DATA;
- else if (bfd_get_section (cache_ptr) == obj_bsssec (abfd)
- || (bfd_get_section (cache_ptr)->output_section
- == obj_bsssec (abfd)))
+ else if (sec == obj_bsssec (abfd))
sym_pointer->e_type[0] |= N_BSS;
- else if (bfd_get_section (cache_ptr) == NULL)
- {
- /* Protect the bfd_is_com_section call. This case occurs, e.g.,
- for the *DEBUG* section of a COFF file. */
- bfd_set_error (bfd_error_nonrepresentable_section);
- return false;
- }
- else if (bfd_is_und_section (bfd_get_section (cache_ptr)))
+ else if (bfd_is_und_section (sec))
sym_pointer->e_type[0] = N_UNDF | N_EXT;
- else if (bfd_is_ind_section (bfd_get_section (cache_ptr)))
+ else if (bfd_is_ind_section (sec))
sym_pointer->e_type[0] = N_INDR;
- else if (bfd_is_com_section (bfd_get_section (cache_ptr)))
+ else if (bfd_is_com_section (sec))
sym_pointer->e_type[0] = N_UNDF | N_EXT;
else
{
- bfd_set_error (bfd_error_nonrepresentable_section);
- return false;
+ if (aout_section_merge_with_text_p (abfd, sec))
+ sym_pointer->e_type[0] |= N_TEXT;
+ else
+ {
+ _bfd_error_handler
+ /* xgettext:c-format */
+ (_("%pB: can not represent section `%pA' in a.out object file format"),
+ abfd, sec);
+ bfd_set_error (bfd_error_nonrepresentable_section);
+ return FALSE;
+ }
}
- /* Turn the symbol from section relative to absolute again */
- value += cache_ptr->section->vma;
+ /* Turn the symbol from section relative to absolute again. */
+ value += sec->vma + off;
if ((cache_ptr->flags & BSF_WARNING) != 0)
sym_pointer->e_type[0] = N_WARNING;
sym_pointer->e_type[0] = ((aout_symbol_type *) cache_ptr)->type;
else if ((cache_ptr->flags & BSF_GLOBAL) != 0)
sym_pointer->e_type[0] |= N_EXT;
+ else if ((cache_ptr->flags & BSF_LOCAL) != 0)
+ sym_pointer->e_type[0] &= ~N_EXT;
if ((cache_ptr->flags & BSF_CONSTRUCTOR) != 0)
{
int type = ((aout_symbol_type *) cache_ptr)->type;
+
switch (type)
{
case N_ABS: type = N_SETA; break;
sym_pointer->e_type[0] = type;
}
- PUT_WORD(abfd, value, sym_pointer->e_value);
+ PUT_WORD (abfd, value, sym_pointer->e_value);
- return true;
+ return TRUE;
}
\f
-/* Native-level interface to symbols. */
+/* Native-level interface to symbols. */
asymbol *
-NAME(aout,make_empty_symbol) (abfd)
- bfd *abfd;
+NAME (aout, make_empty_symbol) (bfd *abfd)
{
- aout_symbol_type *new =
- (aout_symbol_type *)bfd_zalloc (abfd, sizeof (aout_symbol_type));
- if (!new)
- {
- bfd_set_error (bfd_error_no_memory);
- return NULL;
- }
- new->symbol.the_bfd = abfd;
+ bfd_size_type amt = sizeof (aout_symbol_type);
+
+ aout_symbol_type *new_symbol = (aout_symbol_type *) bfd_zalloc (abfd, amt);
+ if (!new_symbol)
+ return NULL;
+ new_symbol->symbol.the_bfd = abfd;
- return &new->symbol;
+ return &new_symbol->symbol;
}
/* Translate a set of internal symbols into external symbols. */
-boolean
-NAME(aout,translate_symbol_table) (abfd, in, ext, count, str, strsize, dynamic)
- bfd *abfd;
- aout_symbol_type *in;
- struct external_nlist *ext;
- bfd_size_type count;
- char *str;
- bfd_size_type strsize;
- boolean dynamic;
+bfd_boolean
+NAME (aout, translate_symbol_table) (bfd *abfd,
+ aout_symbol_type *in,
+ struct external_nlist *ext,
+ bfd_size_type count,
+ char *str,
+ bfd_size_type strsize,
+ bfd_boolean dynamic)
{
struct external_nlist *ext_end;
else if (x < strsize)
in->symbol.name = str + x;
else
- return false;
+ {
+ _bfd_error_handler
+ (_("%pB: invalid string offset %" PRIu64 " >= %" PRIu64),
+ abfd, (uint64_t) x, (uint64_t) strsize);
+ bfd_set_error (bfd_error_bad_value);
+ return FALSE;
+ }
in->symbol.value = GET_SWORD (abfd, ext->e_value);
- in->desc = bfd_h_get_16 (abfd, ext->e_desc);
- in->other = bfd_h_get_8 (abfd, ext->e_other);
- in->type = bfd_h_get_8 (abfd, ext->e_type);
- in->symbol.udata = 0;
+ in->desc = H_GET_16 (abfd, ext->e_desc);
+ in->other = H_GET_8 (abfd, ext->e_other);
+ in->type = H_GET_8 (abfd, ext->e_type);
+ in->symbol.udata.p = NULL;
if (! translate_from_native_sym_flags (abfd, in))
- return false;
+ return FALSE;
if (dynamic)
in->symbol.flags |= BSF_DYNAMIC;
}
- return true;
+ return TRUE;
}
/* 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. */
+ hold them all plus all the cached symbol entries. */
-boolean
-NAME(aout,slurp_symbol_table) (abfd)
- bfd *abfd;
+bfd_boolean
+NAME (aout, slurp_symbol_table) (bfd *abfd)
{
struct external_nlist *old_external_syms;
aout_symbol_type *cached;
- size_t cached_size;
+ bfd_size_type cached_size;
- /* If there's no work to be done, don't do any */
- if (obj_aout_symbols (abfd) != (aout_symbol_type *) NULL)
- return true;
+ /* If there's no work to be done, don't do any. */
+ if (obj_aout_symbols (abfd) != NULL)
+ return TRUE;
old_external_syms = obj_aout_external_syms (abfd);
if (! aout_get_external_symbols (abfd))
- return false;
+ return FALSE;
- if (obj_aout_external_sym_count (abfd) == 0)
- {
- bfd_set_error (bfd_error_no_symbols);
- return false;
- }
+ cached_size = obj_aout_external_sym_count (abfd);
+ if (cached_size == 0)
+ return TRUE; /* Nothing to do. */
- cached_size = (obj_aout_external_sym_count (abfd)
- * sizeof (aout_symbol_type));
- cached = (aout_symbol_type *) malloc (cached_size);
+ cached_size *= sizeof (aout_symbol_type);
+ cached = (aout_symbol_type *) bfd_zmalloc (cached_size);
if (cached == NULL)
- {
- bfd_set_error (bfd_error_no_memory);
- return false;
- }
- memset (cached, 0, cached_size);
+ return FALSE;
/* Convert from external symbol information to internal. */
- if (! (NAME(aout,translate_symbol_table)
+ if (! (NAME (aout, translate_symbol_table)
(abfd, cached,
obj_aout_external_syms (abfd),
obj_aout_external_sym_count (abfd),
obj_aout_external_strings (abfd),
obj_aout_external_string_size (abfd),
- false)))
+ FALSE)))
{
free (cached);
- return false;
+ return FALSE;
}
bfd_get_symcount (abfd) = obj_aout_external_sym_count (abfd);
want the external symbol information, so if it was allocated
because of our call to aout_get_external_symbols, we free it up
right away to save space. */
- if (old_external_syms == (struct external_nlist *) NULL
- && obj_aout_external_syms (abfd) != (struct external_nlist *) NULL)
+ if (old_external_syms == NULL
+ && obj_aout_external_syms (abfd) != NULL)
{
+#ifdef USE_MMAP
+ bfd_free_window (&obj_aout_sym_window (abfd));
+#else
free (obj_aout_external_syms (abfd));
+#endif
obj_aout_external_syms (abfd) = NULL;
}
- return true;
+ return TRUE;
}
\f
/* We use a hash table when writing out symbols so that we only write
contributing object file tends to have many duplicate stabs
strings.
- Possible improvements:
- + look for strings matching trailing substrings of other strings
- + better data structures? balanced trees?
- + look at reducing memory use elsewhere -- maybe if we didn't have
- to construct the entire symbol table at once, we could get by
- with smaller amounts of VM? (What effect does that have on the
- string table reductions?)
-
This hash table code breaks dbx on SunOS 4.1.3, so we don't do it
if BFD_TRADITIONAL_FORMAT is set. */
-/* An entry in the strtab hash table. */
-
-struct strtab_hash_entry
-{
- struct bfd_hash_entry root;
- /* Index in string table. */
- bfd_size_type index;
- /* Next string in strtab. */
- struct strtab_hash_entry *next;
-};
-
-/* The strtab hash table. */
+/* Get the index of a string in a strtab, adding it if it is not
+ already present. */
-struct strtab_hash
+static inline bfd_size_type
+add_to_stringtab (bfd *abfd,
+ struct bfd_strtab_hash *tab,
+ const char *str,
+ bfd_boolean copy)
{
- struct bfd_hash_table table;
- /* Size of strtab--also next available index. */
- bfd_size_type size;
- /* First string in strtab. */
- struct strtab_hash_entry *first;
- /* Last string in strtab. */
- struct strtab_hash_entry *last;
-};
-
-static struct bfd_hash_entry *strtab_hash_newfunc
- PARAMS ((struct bfd_hash_entry *, struct bfd_hash_table *, const char *));
-static boolean stringtab_init PARAMS ((struct strtab_hash *));
-static bfd_size_type add_to_stringtab
- PARAMS ((bfd *, struct strtab_hash *, const char *, boolean));
-static boolean emit_stringtab PARAMS ((bfd *, struct strtab_hash *));
+ bfd_boolean hash;
+ bfd_size_type str_index;
-/* Routine to create an entry in a strtab. */
-
-static struct bfd_hash_entry *
-strtab_hash_newfunc (entry, table, string)
- struct bfd_hash_entry *entry;
- struct bfd_hash_table *table;
- const char *string;
-{
- struct strtab_hash_entry *ret = (struct strtab_hash_entry *) entry;
+ /* An index of 0 always means the empty string. */
+ if (str == 0 || *str == '\0')
+ return 0;
- /* Allocate the structure if it has not already been allocated by a
- subclass. */
- if (ret == (struct strtab_hash_entry *) NULL)
- ret = ((struct strtab_hash_entry *)
- bfd_hash_allocate (table, sizeof (struct strtab_hash_entry)));
- if (ret == (struct strtab_hash_entry *) NULL)
- {
- bfd_set_error (bfd_error_no_memory);
- return NULL;
- }
+ /* Don't hash if BFD_TRADITIONAL_FORMAT is set, because SunOS dbx
+ doesn't understand a hashed string table. */
+ hash = TRUE;
+ if ((abfd->flags & BFD_TRADITIONAL_FORMAT) != 0)
+ hash = FALSE;
- /* Call the allocation method of the superclass. */
- ret = ((struct strtab_hash_entry *)
- bfd_hash_newfunc ((struct bfd_hash_entry *) ret, table, string));
+ str_index = _bfd_stringtab_add (tab, str, hash, copy);
- if (ret)
- {
- /* Initialize the local fields. */
- ret->index = (bfd_size_type) -1;
- ret->next = NULL;
- }
+ if (str_index != (bfd_size_type) -1)
+ /* Add BYTES_IN_WORD to the return value to account for the
+ space taken up by the string table size. */
+ str_index += BYTES_IN_WORD;
- return (struct bfd_hash_entry *) ret;
+ return str_index;
}
-/* Look up an entry in an strtab. */
-
-#define strtab_hash_lookup(t, string, create, copy) \
- ((struct strtab_hash_entry *) \
- bfd_hash_lookup (&(t)->table, (string), (create), (copy)))
-
-/* Create a new strtab. */
+/* Write out a strtab. ABFD is already at the right location in the
+ file. */
-static boolean
-stringtab_init (table)
- struct strtab_hash *table;
+static bfd_boolean
+emit_stringtab (bfd *abfd, struct bfd_strtab_hash *tab)
{
- if (! bfd_hash_table_init (&table->table, strtab_hash_newfunc))
- return false;
-
- /* Leave space for the size of the string table. */
- table->size = BYTES_IN_WORD;
+ bfd_byte buffer[BYTES_IN_WORD];
+ bfd_size_type amt = BYTES_IN_WORD;
- table->first = NULL;
- table->last = NULL;
+ /* The string table starts with the size. */
+ PUT_WORD (abfd, _bfd_stringtab_size (tab) + BYTES_IN_WORD, buffer);
+ if (bfd_bwrite ((void *) buffer, amt, abfd) != amt)
+ return FALSE;
- return true;
-}
-
-/* Free a strtab. */
-
-#define stringtab_free(tab) bfd_hash_table_free (&(tab)->table)
-
-/* Get the index of a string in a strtab, adding it if it is not
- already present. If HASH is false, we don't really use the hash
- table, and we don't eliminate duplicate strings. */
-
-static INLINE bfd_size_type
-add_to_stringtab (abfd, tab, str, copy)
- bfd *abfd;
- struct strtab_hash *tab;
- const char *str;
- boolean copy;
-{
- register struct strtab_hash_entry *entry;
-
- /* An index of 0 always means the empty string. */
- if (*str == '\0')
- return 0;
-
- if ((abfd->flags & BFD_TRADITIONAL_FORMAT) == 0)
- {
- entry = strtab_hash_lookup (tab, str, true, copy);
- if (entry == NULL)
- return (bfd_size_type) -1;
- }
- else
- {
- entry = ((struct strtab_hash_entry *)
- bfd_hash_allocate (&tab->table,
- sizeof (struct strtab_hash_entry)));
- if (entry == NULL)
- return (bfd_size_type) -1;
- if (! copy)
- entry->root.string = str;
- else
- {
- char *n;
-
- n = (char *) bfd_hash_allocate (&tab->table, strlen (str) + 1);
- if (n == NULL)
- return (bfd_size_type) -1;
- entry->root.string = n;
- }
- entry->index = (bfd_size_type) -1;
- entry->next = NULL;
- }
-
- if (entry->index == (bfd_size_type) -1)
- {
- entry->index = tab->size;
- tab->size += strlen (str) + 1;
- if (tab->first == NULL)
- tab->first = entry;
- else
- tab->last->next = entry;
- tab->last = entry;
- }
-
- return entry->index;
-}
-
-/* Write out a strtab. ABFD is already at the right location in the
- file. */
-
-static boolean
-emit_stringtab (abfd, tab)
- register bfd *abfd;
- struct strtab_hash *tab;
-{
- bfd_byte buffer[BYTES_IN_WORD];
- register struct strtab_hash_entry *entry;
-
- PUT_WORD (abfd, tab->size, buffer);
- if (bfd_write ((PTR) buffer, 1, BYTES_IN_WORD, abfd) != BYTES_IN_WORD)
- return false;
-
- for (entry = tab->first; entry != NULL; entry = entry->next)
- {
- register const char *str;
- register size_t len;
-
- str = entry->root.string;
- len = strlen (str) + 1;
- if (bfd_write ((PTR) str, 1, len, abfd) != len)
- return false;
- }
-
- return true;
+ return _bfd_stringtab_emit (abfd, tab);
}
\f
-boolean
-NAME(aout,write_syms) (abfd)
- bfd *abfd;
+bfd_boolean
+NAME (aout, write_syms) (bfd *abfd)
{
unsigned int count ;
asymbol **generic = bfd_get_outsymbols (abfd);
- struct strtab_hash strtab;
+ struct bfd_strtab_hash *strtab;
- if (! stringtab_init (&strtab))
- return false;
+ strtab = _bfd_stringtab_init ();
+ if (strtab == NULL)
+ return FALSE;
for (count = 0; count < bfd_get_symcount (abfd); count++)
{
asymbol *g = generic[count];
bfd_size_type indx;
struct external_nlist nsp;
+ bfd_size_type amt;
- indx = add_to_stringtab (abfd, &strtab, g->name, false);
+ indx = add_to_stringtab (abfd, strtab, g->name, FALSE);
if (indx == (bfd_size_type) -1)
goto error_return;
PUT_WORD (abfd, indx, (bfd_byte *) nsp.e_strx);
- if (bfd_asymbol_flavour(g) == abfd->xvec->flavour)
+ if (bfd_asymbol_flavour (g) == 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);
+ H_PUT_16 (abfd, aout_symbol (g)->desc, nsp.e_desc);
+ H_PUT_8 (abfd, aout_symbol (g)->other, nsp.e_other);
+ 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);
+ H_PUT_16 (abfd, 0, nsp.e_desc);
+ H_PUT_8 (abfd, 0, nsp.e_other);
+ H_PUT_8 (abfd, 0, nsp.e_type);
}
if (! translate_to_native_sym_flags (abfd, g, &nsp))
goto error_return;
- if (bfd_write((PTR)&nsp,1,EXTERNAL_NLIST_SIZE, abfd)
- != EXTERNAL_NLIST_SIZE)
+ amt = EXTERNAL_NLIST_SIZE;
+ if (bfd_bwrite ((void *) &nsp, amt, abfd) != amt)
goto error_return;
- /* NB: `KEEPIT' currently overlays `flags', so set this only
+ /* NB: `KEEPIT' currently overlays `udata.p', so set this only
here, at the end. */
g->KEEPIT = count;
}
- if (! emit_stringtab (abfd, &strtab))
+ if (! emit_stringtab (abfd, strtab))
goto error_return;
- stringtab_free (&strtab);
+ _bfd_stringtab_free (strtab);
- return true;
+ return TRUE;
error_return:
- stringtab_free (&strtab);
- return false;
+ _bfd_stringtab_free (strtab);
+ return FALSE;
}
-
\f
long
-NAME(aout,get_symtab) (abfd, location)
- bfd *abfd;
- asymbol **location;
+NAME (aout, canonicalize_symtab) (bfd *abfd, asymbol **location)
{
- unsigned int counter = 0;
- aout_symbol_type *symbase;
+ unsigned int counter = 0;
+ aout_symbol_type *symbase;
- if (!NAME(aout,slurp_symbol_table)(abfd))
- return -1;
+ if (!NAME (aout, slurp_symbol_table) (abfd))
+ return -1;
- for (symbase = obj_aout_symbols(abfd); counter++ < bfd_get_symcount (abfd);)
- *(location++) = (asymbol *)( symbase++);
- *location++ =0;
- return bfd_get_symcount (abfd);
+ for (symbase = obj_aout_symbols (abfd);
+ counter++ < bfd_get_symcount (abfd);
+ )
+ *(location++) = (asymbol *) (symbase++);
+ *location++ =0;
+ return bfd_get_symcount (abfd);
}
-
\f
-/* Standard reloc stuff */
-/* Output standard relocation information to a file in target byte order. */
+/* Standard reloc stuff. */
+/* Output standard relocation information to a file in target byte order. */
+
+extern void NAME (aout, swap_std_reloc_out)
+ (bfd *, arelent *, struct reloc_std_external *);
void
-NAME(aout,swap_std_reloc_out) (abfd, g, natptr)
- bfd *abfd;
- arelent *g;
- struct reloc_std_external *natptr;
+NAME (aout, swap_std_reloc_out) (bfd *abfd,
+ arelent *g,
+ struct reloc_std_external *natptr)
{
int r_index;
asymbol *sym = *(g->sym_ptr_ptr);
int r_baserel, r_jmptable, r_relative;
asection *output_section = sym->section->output_section;
- PUT_WORD(abfd, g->address, natptr->r_address);
+ 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? */
+ BFD_ASSERT (g->howto != NULL);
+ r_length = g->howto->size ; /* Size as a power of two. */
+ r_pcrel = (int) g->howto->pc_relative; /* Relative to PC? */
/* XXX This relies on relocs coming from a.out files. */
r_baserel = (g->howto->type & 8) != 0;
r_jmptable = (g->howto->type & 16) != 0;
r_relative = (g->howto->type & 32) != 0;
-#if 0
- /* For a standard reloc, the addend is in the object file. */
- r_addend = g->addend + (*(g->sym_ptr_ptr))->section->output_section->vma;
-#endif
-
- /* name was clobbered by aout_write_syms to be symbol index */
+ /* Name was clobbered by aout_write_syms to be symbol index. */
/* If this relocation is relative to a symbol then set the
r_index to the symbols index, and the r_extern bit.
Absolute symbols can come in in two ways, either as an offset
from the abs section, or as a symbol which has an abs value.
- check for that here
- */
-
+ check for that here. */
if (bfd_is_com_section (output_section)
|| bfd_is_abs_section (output_section)
- || bfd_is_und_section (output_section))
+ || bfd_is_und_section (output_section)
+ /* PR gas/3041 a.out relocs against weak symbols
+ must be treated as if they were against externs. */
+ || (sym->flags & BSF_WEAK))
{
if (bfd_abs_section_ptr->symbol == sym)
- {
- /* Whoops, looked like an abs symbol, but is really an offset
- from the abs section */
- r_index = 0;
- r_extern = 0;
- }
+ {
+ /* Whoops, looked like an abs symbol, but is
+ really an offset from the abs section. */
+ r_index = N_ABS;
+ r_extern = 0;
+ }
else
- {
- /* Fill in symbol */
- r_extern = 1;
- r_index = stoi((*(g->sym_ptr_ptr))->KEEPIT);
-
- }
+ {
+ /* Fill in symbol. */
+ r_extern = 1;
+ r_index = (*(g->sym_ptr_ptr))->KEEPIT;
+ }
}
else
{
- /* Just an ordinary section */
+ /* Just an ordinary section. */
r_extern = 0;
r_index = output_section->target_index;
}
- /* now the fun stuff */
- if (abfd->xvec->header_byteorder_big_p != false) {
+ /* Now the fun stuff. */
+ if (bfd_header_big_endian (abfd))
+ {
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);
- }
+ 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. */
-/* Extended stuff */
-/* Output extended relocation information to a file in target byte order. */
+extern void NAME (aout, swap_ext_reloc_out)
+ (bfd *, arelent *, struct reloc_ext_external *);
void
-NAME(aout,swap_ext_reloc_out) (abfd, g, natptr)
- bfd *abfd;
- arelent *g;
- register struct reloc_ext_external *natptr;
+NAME (aout, swap_ext_reloc_out) (bfd *abfd,
+ arelent *g,
+ struct reloc_ext_external *natptr)
{
int r_index;
int r_extern;
unsigned int r_type;
- unsigned int r_addend;
+ bfd_vma r_addend;
asymbol *sym = *(g->sym_ptr_ptr);
asection *output_section = sym->section->output_section;
r_type = (unsigned int) g->howto->type;
- r_addend = g->addend + (*(g->sym_ptr_ptr))->section->output_section->vma;
+ r_addend = g->addend;
+ if ((sym->flags & BSF_SECTION_SYM) != 0)
+ r_addend += (*(g->sym_ptr_ptr))->section->output_section->vma;
/* If this relocation is relative to a symbol then set the
r_index to the symbols index, and the r_extern bit.
Absolute symbols can come in in two ways, either as an offset
from the abs section, or as a symbol which has an abs value.
check for that here. */
-
- if (bfd_is_com_section (output_section)
- || bfd_is_abs_section (output_section)
- || bfd_is_und_section (output_section))
- {
- if (bfd_abs_section_ptr->symbol == sym)
+ if (bfd_is_abs_section (bfd_get_section (sym)))
{
- /* Whoops, looked like an abs symbol, but is really an offset
- from the abs section */
- r_index = 0;
r_extern = 0;
- }
- else
+ r_index = N_ABS;
+ }
+ else if ((sym->flags & BSF_SECTION_SYM) == 0)
{
- r_extern = 1;
- r_index = stoi((*(g->sym_ptr_ptr))->KEEPIT);
+ if (bfd_is_und_section (bfd_get_section (sym))
+ || (sym->flags & BSF_GLOBAL) != 0)
+ r_extern = 1;
+ else
+ r_extern = 0;
+ r_index = (*(g->sym_ptr_ptr))->KEEPIT;
}
- }
else
- {
- /* Just an ordinary section */
- r_extern = 0;
- r_index = output_section->target_index;
- }
+ {
+ /* Just an ordinary section. */
+ r_extern = 0;
+ r_index = output_section->target_index;
+ }
- /* 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);
- }
+ /* Now the fun stuff. */
+ if (bfd_header_big_endian (abfd))
+ {
+ 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);
}
Aout keeps all it's symbols based from zero, so the symbol would
contain 60. This macro subs the base of each section from the value
- to give the true offset from the section */
-
-
-#define MOVE_ADDRESS(ad) \
- if (r_extern) { \
- /* undefined symbol */ \
- cache_ptr->sym_ptr_ptr = symbols + r_index; \
- cache_ptr->addend = ad; \
- } else { \
- /* defined, section relative. replace symbol with pointer to \
- symbol which points to section */ \
- switch (r_index) { \
- case N_TEXT: \
- case N_TEXT | N_EXT: \
- cache_ptr->sym_ptr_ptr = obj_textsec(abfd)->symbol_ptr_ptr; \
- cache_ptr->addend = ad - su->textsec->vma; \
- break; \
- case N_DATA: \
- case N_DATA | N_EXT: \
- cache_ptr->sym_ptr_ptr = obj_datasec(abfd)->symbol_ptr_ptr; \
- cache_ptr->addend = ad - su->datasec->vma; \
- break; \
- case N_BSS: \
- case N_BSS | N_EXT: \
- cache_ptr->sym_ptr_ptr = obj_bsssec(abfd)->symbol_ptr_ptr; \
- cache_ptr->addend = ad - su->bsssec->vma; \
- break; \
- default: \
- case N_ABS: \
- case N_ABS | N_EXT: \
- cache_ptr->sym_ptr_ptr = bfd_abs_section_ptr->symbol_ptr_ptr; \
+ to give the true offset from the section. */
+
+#define MOVE_ADDRESS(ad) \
+ if (r_extern) \
+ { \
+ /* Undefined symbol. */ \
+ cache_ptr->sym_ptr_ptr = symbols + r_index; \
cache_ptr->addend = ad; \
- break; \
} \
- } \
+ else \
+ { \
+ /* Defined, section relative. Replace symbol with pointer to \
+ symbol which points to section. */ \
+ switch (r_index) \
+ { \
+ case N_TEXT: \
+ case N_TEXT | N_EXT: \
+ cache_ptr->sym_ptr_ptr = obj_textsec (abfd)->symbol_ptr_ptr; \
+ cache_ptr->addend = ad - su->textsec->vma; \
+ break; \
+ case N_DATA: \
+ case N_DATA | N_EXT: \
+ cache_ptr->sym_ptr_ptr = obj_datasec (abfd)->symbol_ptr_ptr; \
+ cache_ptr->addend = ad - su->datasec->vma; \
+ break; \
+ case N_BSS: \
+ case N_BSS | N_EXT: \
+ cache_ptr->sym_ptr_ptr = obj_bsssec (abfd)->symbol_ptr_ptr; \
+ cache_ptr->addend = ad - su->bsssec->vma; \
+ break; \
+ default: \
+ case N_ABS: \
+ case N_ABS | N_EXT: \
+ cache_ptr->sym_ptr_ptr = bfd_abs_section_ptr->symbol_ptr_ptr; \
+ cache_ptr->addend = ad; \
+ break; \
+ } \
+ }
void
-NAME(aout,swap_ext_reloc_in) (abfd, bytes, cache_ptr, symbols)
- bfd *abfd;
- struct reloc_ext_external *bytes;
- arelent *cache_ptr;
- asymbol **symbols;
+NAME (aout, swap_ext_reloc_in) (bfd *abfd,
+ struct reloc_ext_external *bytes,
+ arelent *cache_ptr,
+ asymbol **symbols,
+ bfd_size_type symcount)
{
- int r_index;
+ unsigned int r_index;
int r_extern;
unsigned int r_type;
struct aoutdata *su = &(abfd->tdata.aout_data->a);
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;
- }
+ /* Now the fun stuff. */
+ if (bfd_header_big_endian (abfd))
+ {
+ r_index = (((unsigned int) bytes->r_index[0] << 16)
+ | ((unsigned int) 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 = (((unsigned int) bytes->r_index[2] << 16)
+ | ((unsigned int) 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);
+ }
+
+ if (r_type < TABLE_SIZE (howto_table_ext))
+ cache_ptr->howto = howto_table_ext + r_type;
+ else
+ cache_ptr->howto = NULL;
+
+ /* Base relative relocs are always against the symbol table,
+ regardless of the setting of r_extern. r_extern just reflects
+ whether the symbol the reloc is against is local or global. */
+ if (r_type == (unsigned int) RELOC_BASE10
+ || r_type == (unsigned int) RELOC_BASE13
+ || r_type == (unsigned int) RELOC_BASE22)
+ r_extern = 1;
+
+ if (r_extern && r_index > symcount)
+ {
+ /* We could arrange to return an error, but it might be useful
+ to see the file even if it is bad. */
+ r_extern = 0;
+ r_index = N_ABS;
+ }
- cache_ptr->howto = howto_table_ext + r_type;
- MOVE_ADDRESS(GET_SWORD(abfd, bytes->r_addend));
+ MOVE_ADDRESS (GET_SWORD (abfd, bytes->r_addend));
}
void
-NAME(aout,swap_std_reloc_in) (abfd, bytes, cache_ptr, symbols)
- bfd *abfd;
- struct reloc_std_external *bytes;
- arelent *cache_ptr;
- asymbol **symbols;
+NAME (aout, swap_std_reloc_in) (bfd *abfd,
+ struct reloc_std_external *bytes,
+ arelent *cache_ptr,
+ asymbol **symbols,
+ bfd_size_type symcount)
{
- int r_index;
+ unsigned int r_index;
int r_extern;
unsigned int r_length;
int r_pcrel;
int r_baserel, r_jmptable, r_relative;
struct aoutdata *su = &(abfd->tdata.aout_data->a);
- int howto_idx;
-
- cache_ptr->address = 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;
- }
+ unsigned int howto_idx;
+
+ cache_ptr->address = H_GET_32 (abfd, bytes->r_address);
+
+ /* Now the fun stuff. */
+ if (bfd_header_big_endian (abfd))
+ {
+ r_index = (((unsigned int) bytes->r_index[0] << 16)
+ | ((unsigned int) 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 = (((unsigned int) bytes->r_index[2] << 16)
+ | ((unsigned int) 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);
+ }
+
+ howto_idx = (r_length + 4 * r_pcrel + 8 * r_baserel
+ + 16 * r_jmptable + 32 * r_relative);
+ if (howto_idx < TABLE_SIZE (howto_table_std))
+ {
+ cache_ptr->howto = howto_table_std + howto_idx;
+ if (cache_ptr->howto->type == (unsigned int) -1)
+ cache_ptr->howto = NULL;
+ }
+ else
+ cache_ptr->howto = NULL;
+
+ /* Base relative relocs are always against the symbol table,
+ regardless of the setting of r_extern. r_extern just reflects
+ whether the symbol the reloc is against is local or global. */
+ if (r_baserel)
+ r_extern = 1;
- howto_idx = r_length + 4 * r_pcrel + 8 * r_baserel
- + 16 * r_jmptable + 32 * r_relative;
- BFD_ASSERT (howto_idx < TABLE_SIZE (howto_table_std));
- cache_ptr->howto = howto_table_std + howto_idx;
- BFD_ASSERT (cache_ptr->howto->type != -1);
+ if (r_extern && r_index >= symcount)
+ {
+ /* We could arrange to return an error, but it might be useful
+ to see the file even if it is bad. FIXME: Of course this
+ means that objdump -r *doesn't* see the actual reloc, and
+ objcopy silently writes a different reloc. */
+ r_extern = 0;
+ r_index = N_ABS;
+ }
- MOVE_ADDRESS(0);
+ MOVE_ADDRESS (0);
}
/* Read and swap the relocs for a section. */
-boolean
-NAME(aout,slurp_reloc_table) (abfd, asect, symbols)
- bfd *abfd;
- sec_ptr asect;
- asymbol **symbols;
+bfd_boolean
+NAME (aout, slurp_reloc_table) (bfd *abfd, sec_ptr asect, asymbol **symbols)
{
- unsigned int count;
+ bfd_size_type count;
bfd_size_type reloc_size;
- PTR relocs;
+ void * relocs;
arelent *reloc_cache;
size_t each_size;
unsigned int counter = 0;
arelent *cache_ptr;
+ bfd_size_type amt;
if (asect->relocation)
- return true;
+ return TRUE;
if (asect->flags & SEC_CONSTRUCTOR)
- return true;
+ return TRUE;
if (asect == obj_datasec (abfd))
- reloc_size = exec_hdr(abfd)->a_drsize;
+ reloc_size = exec_hdr (abfd)->a_drsize;
else if (asect == obj_textsec (abfd))
- reloc_size = exec_hdr(abfd)->a_trsize;
+ reloc_size = exec_hdr (abfd)->a_trsize;
else if (asect == obj_bsssec (abfd))
reloc_size = 0;
else
{
bfd_set_error (bfd_error_invalid_operation);
- return false;
+ return FALSE;
}
+ if (reloc_size == 0)
+ return TRUE; /* Nothing to be done. */
+
if (bfd_seek (abfd, asect->rel_filepos, SEEK_SET) != 0)
- return false;
+ return FALSE;
each_size = obj_reloc_entry_size (abfd);
count = reloc_size / each_size;
+ if (count == 0)
+ return TRUE; /* Nothing to be done. */
- reloc_cache = (arelent *) malloc ((size_t) (count * sizeof (arelent)));
- if (reloc_cache == NULL && count != 0)
- {
- bfd_set_error (bfd_error_no_memory);
- return false;
- }
- memset (reloc_cache, 0, count * sizeof (arelent));
+ amt = count * sizeof (arelent);
+ reloc_cache = (arelent *) bfd_zmalloc (amt);
+ if (reloc_cache == NULL)
+ return FALSE;
- relocs = malloc (reloc_size);
- if (relocs == NULL && reloc_size != 0)
+ relocs = bfd_malloc (reloc_size);
+ if (relocs == NULL)
{
free (reloc_cache);
- bfd_set_error (bfd_error_no_memory);
- return false;
+ return FALSE;
}
- if (bfd_read (relocs, 1, reloc_size, abfd) != reloc_size)
+ if (bfd_bread (relocs, reloc_size, abfd) != reloc_size)
{
free (relocs);
free (reloc_cache);
- return false;
+ return FALSE;
}
cache_ptr = reloc_cache;
if (each_size == RELOC_EXT_SIZE)
{
- register struct reloc_ext_external *rptr =
- (struct reloc_ext_external *) relocs;
+ struct reloc_ext_external *rptr = (struct reloc_ext_external *) relocs;
for (; counter < count; counter++, rptr++, cache_ptr++)
- NAME(aout,swap_ext_reloc_in) (abfd, rptr, cache_ptr, symbols);
+ MY_swap_ext_reloc_in (abfd, rptr, cache_ptr, symbols,
+ (bfd_size_type) bfd_get_symcount (abfd));
}
else
{
- register struct reloc_std_external *rptr =
- (struct reloc_std_external *) relocs;
+ struct reloc_std_external *rptr = (struct reloc_std_external *) relocs;
for (; counter < count; counter++, rptr++, cache_ptr++)
- MY_swap_std_reloc_in(abfd, rptr, cache_ptr, symbols);
+ MY_swap_std_reloc_in (abfd, rptr, cache_ptr, symbols,
+ (bfd_size_type) bfd_get_symcount (abfd));
}
free (relocs);
asect->relocation = reloc_cache;
asect->reloc_count = cache_ptr - reloc_cache;
- return true;
+ return TRUE;
}
/* Write out a relocation section into an object file. */
-boolean
-NAME(aout,squirt_out_relocs) (abfd, section)
- bfd *abfd;
- asection *section;
+bfd_boolean
+NAME (aout, squirt_out_relocs) (bfd *abfd, asection *section)
{
arelent **generic;
unsigned char *native, *natptr;
size_t each_size;
unsigned int count = section->reloc_count;
- size_t natsize;
+ bfd_size_type natsize;
- if (count == 0) return true;
+ if (count == 0 || section->orelocation == NULL)
+ return TRUE;
each_size = obj_reloc_entry_size (abfd);
- natsize = each_size * count;
+ natsize = (bfd_size_type) each_size * count;
native = (unsigned char *) bfd_zalloc (abfd, natsize);
- if (!native) {
- bfd_set_error (bfd_error_no_memory);
- return false;
- }
+ if (!native)
+ return FALSE;
generic = section->orelocation;
for (natptr = native;
count != 0;
--count, natptr += each_size, ++generic)
- NAME(aout,swap_ext_reloc_out) (abfd, *generic, (struct reloc_ext_external *)natptr);
+ {
+ /* PR 20921: If the howto field has not been initialised then skip
+ this reloc.
+ PR 20929: Similarly for the symbol field. */
+ if ((*generic)->howto == NULL
+ || (*generic)->sym_ptr_ptr == NULL)
+ {
+ bfd_set_error (bfd_error_invalid_operation);
+ _bfd_error_handler (_("\
+%pB: attempt to write out unknown reloc type"), abfd);
+ return FALSE;
+ }
+ MY_swap_ext_reloc_out (abfd, *generic,
+ (struct reloc_ext_external *) natptr);
+ }
}
else
{
for (natptr = native;
count != 0;
--count, natptr += each_size, ++generic)
- MY_swap_std_reloc_out(abfd, *generic, (struct reloc_std_external *)natptr);
+ {
+ if ((*generic)->howto == NULL
+ || (*generic)->sym_ptr_ptr == NULL)
+ {
+ bfd_set_error (bfd_error_invalid_operation);
+ _bfd_error_handler (_("\
+%pB: attempt to write out unknown reloc type"), abfd);
+ return FALSE;
+ }
+ MY_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;
- }
+ if (bfd_bwrite ((void *) native, natsize, abfd) != natsize)
+ {
+ bfd_release (abfd, native);
+ return FALSE;
+ }
bfd_release (abfd, native);
- return true;
+ return TRUE;
}
-/* This is stupid. This function should be a boolean predicate */
+/* This is stupid. This function should be a boolean predicate. */
+
long
-NAME(aout,canonicalize_reloc) (abfd, section, relptr, symbols)
- bfd *abfd;
- sec_ptr section;
- arelent **relptr;
- asymbol **symbols;
+NAME (aout, canonicalize_reloc) (bfd *abfd,
+ sec_ptr section,
+ arelent **relptr,
+ asymbol **symbols)
{
arelent *tblptr = section->relocation;
unsigned int count;
return 0;
}
- if (!(tblptr || NAME(aout,slurp_reloc_table)(abfd, section, symbols)))
+ if (!(tblptr || NAME (aout, slurp_reloc_table) (abfd, section, symbols)))
return -1;
- 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;
+ 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;
+ else
+ {
+ tblptr = section->relocation;
- for (count = 0; count++ < section->reloc_count;)
- {
- *relptr++ = tblptr++;
- }
- }
+ for (count = 0; count++ < section->reloc_count; )
+ {
+ *relptr++ = tblptr++;
+ }
+ }
*relptr = 0;
return section->reloc_count;
}
long
-NAME(aout,get_reloc_upper_bound) (abfd, asect)
- bfd *abfd;
- sec_ptr asect;
+NAME (aout, get_reloc_upper_bound) (bfd *abfd, sec_ptr asect)
{
- if (bfd_get_format (abfd) != bfd_object) {
- bfd_set_error (bfd_error_invalid_operation);
- return -1;
- }
- if (asect->flags & SEC_CONSTRUCTOR) {
- return (sizeof (arelent *) * (asect->reloc_count+1));
- }
+ if (bfd_get_format (abfd) != bfd_object)
+ {
+ bfd_set_error (bfd_error_invalid_operation);
+ return -1;
+ }
+
+ 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));
+ 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));
+ return sizeof (arelent *)
+ * ((exec_hdr (abfd)->a_trsize / obj_reloc_entry_size (abfd))
+ + 1);
if (asect == obj_bsssec (abfd))
return sizeof (arelent *);
bfd_set_error (bfd_error_invalid_operation);
return -1;
}
-
\f
long
-NAME(aout,get_symtab_upper_bound) (abfd)
- bfd *abfd;
+NAME (aout, get_symtab_upper_bound) (bfd *abfd)
{
- if (!NAME(aout,slurp_symbol_table)(abfd))
+ if (!NAME (aout, slurp_symbol_table) (abfd))
return -1;
return (bfd_get_symcount (abfd)+1) * (sizeof (aout_symbol_type *));
}
-/*ARGSUSED*/
- alent *
-NAME(aout,get_lineno) (ignore_abfd, ignore_symbol)
- bfd *ignore_abfd;
- asymbol *ignore_symbol;
+alent *
+NAME (aout, get_lineno) (bfd *ignore_abfd ATTRIBUTE_UNUSED,
+ asymbol *ignore_symbol ATTRIBUTE_UNUSED)
{
-return (alent *)NULL;
+ return NULL;
}
-/*ARGSUSED*/
void
-NAME(aout,get_symbol_info) (ignore_abfd, symbol, ret)
- bfd *ignore_abfd;
- asymbol *symbol;
- symbol_info *ret;
+NAME (aout, get_symbol_info) (bfd *ignore_abfd ATTRIBUTE_UNUSED,
+ asymbol *symbol,
+ symbol_info *ret)
{
bfd_symbol_info (symbol, ret);
if (ret->type == '?')
{
- int type_code = aout_symbol(symbol)->type & 0xff;
- CONST char *stab_name = aout_stab_name(type_code);
+ int type_code = aout_symbol (symbol)->type & 0xff;
+ const char *stab_name = bfd_get_stab_name (type_code);
static char buf[10];
if (stab_name == NULL)
{
- sprintf(buf, "(%d)", type_code);
+ sprintf (buf, "(%d)", type_code);
stab_name = buf;
}
ret->type = '-';
- ret->stab_other = (unsigned)(aout_symbol(symbol)->other & 0xff);
- ret->stab_desc = (unsigned)(aout_symbol(symbol)->desc & 0xffff);
+ ret->stab_type = type_code;
+ ret->stab_other = (unsigned) (aout_symbol (symbol)->other & 0xff);
+ ret->stab_desc = (unsigned) (aout_symbol (symbol)->desc & 0xffff);
ret->stab_name = stab_name;
}
}
-/*ARGSUSED*/
void
-NAME(aout,print_symbol) (ignore_abfd, afile, symbol, how)
- bfd *ignore_abfd;
- PTR afile;
- asymbol *symbol;
- bfd_print_symbol_type how;
+NAME (aout, print_symbol) (bfd *abfd,
+ void * afile,
+ asymbol *symbol,
+ bfd_print_symbol_type how)
{
FILE *file = (FILE *)afile;
- switch (how) {
- case bfd_print_symbol_name:
- if (symbol->name)
- fprintf(file,"%s", symbol->name);
- break;
- case bfd_print_symbol_more:
- 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:
+ switch (how)
{
- CONST char *section_name = symbol->section->name;
-
+ case bfd_print_symbol_name:
+ if (symbol->name)
+ fprintf (file,"%s", symbol->name);
+ break;
+ case bfd_print_symbol_more:
+ 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:
+ {
+ const char *section_name = symbol->section->name;
- bfd_print_symbol_vandf((PTR)file,symbol);
+ bfd_print_symbol_vandf (abfd, (void *)file, symbol);
- fprintf(file," %-5s %04x %02x %02x",
- section_name,
- (unsigned)(aout_symbol(symbol)->desc & 0xffff),
- (unsigned)(aout_symbol(symbol)->other & 0xff),
- (unsigned)(aout_symbol(symbol)->type & 0xff));
- if (symbol->name)
- fprintf(file," %s", symbol->name);
+ fprintf (file," %-5s %04x %02x %02x",
+ section_name,
+ (unsigned) (aout_symbol (symbol)->desc & 0xffff),
+ (unsigned) (aout_symbol (symbol)->other & 0xff),
+ (unsigned) (aout_symbol (symbol)->type & 0xff));
+ if (symbol->name)
+ fprintf (file," %s", symbol->name);
+ }
+ break;
}
- 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.
-*/
+/* If we don't have to allocate more than 1MB to hold the generic
+ symbols, we use the generic minisymbol methord: it's faster, since
+ it only translates the symbols once, not multiple times. */
+#define MINISYM_THRESHOLD (1000000 / sizeof (asymbol))
-boolean
-NAME(aout,find_nearest_line)
- (abfd, section, symbols, offset, filename_ptr, functionname_ptr, line_ptr)
- bfd *abfd;
- asection *section;
- asymbol **symbols;
- bfd_vma offset;
- CONST char **filename_ptr;
- CONST char **functionname_ptr;
- unsigned int *line_ptr;
-{
- /* Run down the file looking for the filename, function and linenumber */
- asymbol **p;
- static char buffer[100];
- static char filename_buffer[200];
- CONST char *directory_name = NULL;
- CONST char *main_file_name = NULL;
- CONST char *current_file_name = NULL;
- CONST char *line_file_name = NULL; /* Value of current_file_name at line number. */
- 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);
- next:
- switch (q->type){
- case N_SO:
- main_file_name = current_file_name = q->symbol.name;
- /* Look ahead to next symbol to check if that too is an N_SO. */
- p++;
- if (*p == NULL)
- break;
- q = (aout_symbol_type *)(*p);
- if (q->type != (int)N_SO)
- goto next;
-
- /* Found a second N_SO First is directory; second is filename. */
- directory_name = current_file_name;
- main_file_name = current_file_name = q->symbol.name;
- if (obj_textsec(abfd) != section)
- goto done;
- break;
- case N_SOL:
- current_file_name = q->symbol.name;
- break;
+/* Read minisymbols. For minisymbols, we use the unmodified a.out
+ symbols. The minisymbol_to_symbol function translates these into
+ BFD asymbol structures. */
- case N_SLINE:
+long
+NAME (aout, read_minisymbols) (bfd *abfd,
+ bfd_boolean dynamic,
+ void * *minisymsp,
+ unsigned int *sizep)
+{
+ if (dynamic)
+ /* We could handle the dynamic symbols here as well, but it's
+ easier to hand them off. */
+ return _bfd_generic_read_minisymbols (abfd, dynamic, minisymsp, sizep);
- 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;
- line_file_name = current_file_name;
- }
- 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;
-
- /* The caller expects a symbol name. We actually have a
- function name, without the leading underscore. Put the
- underscore back in, so that the caller gets a symbol
- name. */
- if (bfd_get_symbol_leading_char (abfd) == '\0')
- strncpy (buffer, function, sizeof (buffer) - 1);
- else
- {
- buffer[0] = bfd_get_symbol_leading_char (abfd);
- strncpy (buffer + 1, function, sizeof (buffer) - 2);
- }
- buffer[sizeof(buffer)-1] = 0;
- /* Have to remove : stuff */
- p = strchr(buffer,':');
- if (p != NULL) { *p = '\0'; }
- *functionname_ptr = buffer;
- goto done;
+ if (! aout_get_external_symbols (abfd))
+ return -1;
- }
- }
- break;
- }
- }
- }
+ if (obj_aout_external_sym_count (abfd) < MINISYM_THRESHOLD)
+ return _bfd_generic_read_minisymbols (abfd, dynamic, minisymsp, sizep);
- done:
- if (*line_ptr)
- main_file_name = line_file_name;
- if (main_file_name) {
- if (main_file_name[0] == '/' || directory_name == NULL)
- *filename_ptr = main_file_name;
- else {
- sprintf(filename_buffer, "%.140s%.50s",
- directory_name, main_file_name);
- *filename_ptr = filename_buffer;
- }
- }
- return true;
+ *minisymsp = (void *) obj_aout_external_syms (abfd);
-}
+ /* By passing the external symbols back from this routine, we are
+ giving up control over the memory block. Clear
+ obj_aout_external_syms, so that we do not try to free it
+ ourselves. */
+ obj_aout_external_syms (abfd) = NULL;
-/*ARGSUSED*/
-int
-NAME(aout,sizeof_headers) (abfd, execable)
- bfd *abfd;
- boolean execable;
-{
- return adata(abfd).exec_bytes_size;
+ *sizep = EXTERNAL_NLIST_SIZE;
+ return obj_aout_external_sym_count (abfd);
}
-/* Free all information we have cached for this BFD. We can always
- read it again later if we need it. */
+/* Convert a minisymbol to a BFD asymbol. A minisymbol is just an
+ unmodified a.out symbol. The SYM argument is a structure returned
+ by bfd_make_empty_symbol, which we fill in here. */
-boolean
-NAME(aout,bfd_free_cached_info) (abfd)
- bfd *abfd;
+asymbol *
+NAME (aout, minisymbol_to_symbol) (bfd *abfd,
+ bfd_boolean dynamic,
+ const void * minisym,
+ asymbol *sym)
{
- asection *o;
-
- if (bfd_get_format (abfd) != bfd_object)
- return true;
-
-#define BFCI_FREE(x) if (x != NULL) { free (x); x = NULL; }
- BFCI_FREE (obj_aout_symbols (abfd));
- BFCI_FREE (obj_aout_external_syms (abfd));
- BFCI_FREE (obj_aout_external_strings (abfd));
- for (o = abfd->sections; o != (asection *) NULL; o = o->next)
- BFCI_FREE (o->relocation);
-#undef BFCI_FREE
+ if (dynamic
+ || obj_aout_external_sym_count (abfd) < MINISYM_THRESHOLD)
+ return _bfd_generic_minisymbol_to_symbol (abfd, dynamic, minisym, sym);
+
+ memset (sym, 0, sizeof (aout_symbol_type));
+
+ /* We call translate_symbol_table to translate a single symbol. */
+ if (! (NAME (aout, translate_symbol_table)
+ (abfd,
+ (aout_symbol_type *) sym,
+ (struct external_nlist *) minisym,
+ (bfd_size_type) 1,
+ obj_aout_external_strings (abfd),
+ obj_aout_external_string_size (abfd),
+ FALSE)))
+ return NULL;
- return true;
+ return sym;
}
-\f
-/* a.out link code. */
-static boolean aout_link_add_object_symbols
- PARAMS ((bfd *, struct bfd_link_info *));
-static boolean aout_link_check_archive_element
- PARAMS ((bfd *, struct bfd_link_info *, boolean *));
-static boolean aout_link_free_symbols PARAMS ((bfd *));
-static boolean aout_link_check_ar_symbols
- PARAMS ((bfd *, struct bfd_link_info *, boolean *pneeded));
-static boolean aout_link_add_symbols
- PARAMS ((bfd *, struct bfd_link_info *));
-
-/* Routine to create an entry in an a.out link hash table. */
-
-struct bfd_hash_entry *
-NAME(aout,link_hash_newfunc) (entry, table, string)
- struct bfd_hash_entry *entry;
- struct bfd_hash_table *table;
- const char *string;
+/* 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. */
+
+bfd_boolean
+NAME (aout, find_nearest_line) (bfd *abfd,
+ asymbol **symbols,
+ asection *section,
+ bfd_vma offset,
+ const char **filename_ptr,
+ const char **functionname_ptr,
+ unsigned int *line_ptr,
+ unsigned int *disriminator_ptr)
{
- struct aout_link_hash_entry *ret = (struct aout_link_hash_entry *) entry;
+ /* Run down the file looking for the filename, function and linenumber. */
+ asymbol **p;
+ const char *directory_name = NULL;
+ const char *main_file_name = NULL;
+ const char *current_file_name = NULL;
+ const char *line_file_name = NULL; /* Value of current_file_name at line number. */
+ const char *line_directory_name = NULL; /* Value of directory_name at line number. */
+ bfd_vma low_line_vma = 0;
+ bfd_vma low_func_vma = 0;
+ asymbol *func = 0;
+ bfd_size_type filelen, funclen;
+ char *buf;
- /* Allocate the structure if it has not already been allocated by a
- subclass. */
- if (ret == (struct aout_link_hash_entry *) NULL)
- ret = ((struct aout_link_hash_entry *)
- bfd_hash_allocate (table, sizeof (struct aout_link_hash_entry)));
- if (ret == (struct aout_link_hash_entry *) NULL)
- {
- bfd_set_error (bfd_error_no_memory);
- return (struct bfd_hash_entry *) ret;
- }
+ *filename_ptr = abfd->filename;
+ *functionname_ptr = NULL;
+ *line_ptr = 0;
+ if (disriminator_ptr)
+ *disriminator_ptr = 0;
- /* Call the allocation method of the superclass. */
- ret = ((struct aout_link_hash_entry *)
- _bfd_link_hash_newfunc ((struct bfd_hash_entry *) ret,
- table, string));
- if (ret)
+ if (symbols != NULL)
{
- /* Set local fields. */
- ret->written = false;
- ret->indx = -1;
- }
+ for (p = symbols; *p; p++)
+ {
+ aout_symbol_type *q = (aout_symbol_type *) (*p);
+ next:
+ switch (q->type)
+ {
+ case N_TEXT:
+ /* If this looks like a file name symbol, and it comes after
+ the line number we have found so far, but before the
+ offset, then we have probably not found the right line
+ number. */
+ if (q->symbol.value <= offset
+ && ((q->symbol.value > low_line_vma
+ && (line_file_name != NULL
+ || *line_ptr != 0))
+ || (q->symbol.value > low_func_vma
+ && func != NULL)))
+ {
+ const char *symname;
- return (struct bfd_hash_entry *) ret;
-}
+ symname = q->symbol.name;
-/* Initialize an a.out link hash table. */
+ if (symname != NULL
+ && strlen (symname) > 2
+ && strcmp (symname + strlen (symname) - 2, ".o") == 0)
+ {
+ if (q->symbol.value > low_line_vma)
+ {
+ *line_ptr = 0;
+ line_file_name = NULL;
+ }
+ if (q->symbol.value > low_func_vma)
+ func = NULL;
+ }
+ }
+ break;
-boolean
-NAME(aout,link_hash_table_init) (table, abfd, newfunc)
- struct aout_link_hash_table *table;
- bfd *abfd;
- struct bfd_hash_entry *(*newfunc) PARAMS ((struct bfd_hash_entry *,
- struct bfd_hash_table *,
- const char *));
-{
- return _bfd_link_hash_table_init (&table->root, abfd, newfunc);
-}
+ case N_SO:
+ /* If this symbol is less than the offset, but greater than
+ the line number we have found so far, then we have not
+ found the right line number. */
+ if (q->symbol.value <= offset)
+ {
+ if (q->symbol.value > low_line_vma)
+ {
+ *line_ptr = 0;
+ line_file_name = NULL;
+ }
+ if (q->symbol.value > low_func_vma)
+ func = NULL;
+ }
-/* Create an a.out link hash table. */
+ main_file_name = current_file_name = q->symbol.name;
+ /* Look ahead to next symbol to check if that too is an N_SO. */
+ p++;
+ if (*p == NULL)
+ goto done;
+ q = (aout_symbol_type *) (*p);
+ if (q->type != (int)N_SO)
+ goto next;
+
+ /* Found a second N_SO First is directory; second is filename. */
+ directory_name = current_file_name;
+ main_file_name = current_file_name = q->symbol.name;
+ if (obj_textsec (abfd) != section)
+ goto done;
+ break;
+ case N_SOL:
+ current_file_name = q->symbol.name;
+ break;
-struct bfd_link_hash_table *
-NAME(aout,link_hash_table_create) (abfd)
- bfd *abfd;
-{
- struct aout_link_hash_table *ret;
+ case N_SLINE:
- ret = ((struct aout_link_hash_table *)
- malloc (sizeof (struct aout_link_hash_table)));
- if (ret == (struct aout_link_hash_table *) NULL)
- {
- bfd_set_error (bfd_error_no_memory);
- return (struct bfd_link_hash_table *) NULL;
- }
- if (! NAME(aout,link_hash_table_init) (ret, abfd,
- NAME(aout,link_hash_newfunc)))
- {
- free (ret);
- return (struct bfd_link_hash_table *) NULL;
+ case N_DSLINE:
+ case N_BSLINE:
+ /* We'll keep this if it resolves nearer than the one we have
+ already. */
+ if (q->symbol.value >= low_line_vma
+ && q->symbol.value <= offset)
+ {
+ *line_ptr = q->desc;
+ low_line_vma = q->symbol.value;
+ line_file_name = current_file_name;
+ line_directory_name = directory_name;
+ }
+ 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;
+ }
+ else if (q->symbol.value > offset)
+ goto done;
+ }
+ break;
+ }
+ }
}
- return &ret->root;
-}
-/* Given an a.out BFD, add symbols to the global hash table as
- appropriate. */
-
-boolean
-NAME(aout,link_add_symbols) (abfd, info)
- bfd *abfd;
- struct bfd_link_info *info;
-{
- switch (bfd_get_format (abfd))
+ done:
+ if (*line_ptr != 0)
{
- case bfd_object:
- return aout_link_add_object_symbols (abfd, info);
- case bfd_archive:
- return _bfd_generic_link_add_archive_symbols
- (abfd, info, aout_link_check_archive_element);
- default:
- bfd_set_error (bfd_error_wrong_format);
- return false;
+ main_file_name = line_file_name;
+ directory_name = line_directory_name;
}
-}
-
-/* Add symbols from an a.out object file. */
-static boolean
-aout_link_add_object_symbols (abfd, info)
- bfd *abfd;
- struct bfd_link_info *info;
-{
- if (! aout_get_external_symbols (abfd))
- return false;
- if (! aout_link_add_symbols (abfd, info))
- return false;
- if (! info->keep_memory)
- {
- if (! aout_link_free_symbols (abfd))
- return false;
- }
- return true;
-}
+ if (main_file_name == NULL
+ || IS_ABSOLUTE_PATH (main_file_name)
+ || directory_name == NULL)
+ filelen = 0;
+ else
+ filelen = strlen (directory_name) + strlen (main_file_name);
-/* Check a single archive element to see if we need to include it in
- the link. *PNEEDED is set according to whether this element is
- needed in the link or not. This is called from
- _bfd_generic_link_add_archive_symbols. */
+ if (func == NULL)
+ funclen = 0;
+ else
+ funclen = strlen (bfd_asymbol_name (func));
-static boolean
-aout_link_check_archive_element (abfd, info, pneeded)
- bfd *abfd;
- struct bfd_link_info *info;
- boolean *pneeded;
-{
- if (! aout_get_external_symbols (abfd))
- return false;
+ if (adata (abfd).line_buf != NULL)
+ free (adata (abfd).line_buf);
- if (! aout_link_check_ar_symbols (abfd, info, pneeded))
- return false;
+ if (filelen + funclen == 0)
+ adata (abfd).line_buf = buf = NULL;
+ else
+ {
+ buf = (char *) bfd_malloc (filelen + funclen + 3);
+ adata (abfd).line_buf = buf;
+ if (buf == NULL)
+ return FALSE;
+ }
- if (*pneeded)
+ if (main_file_name != NULL)
{
- if (! aout_link_add_symbols (abfd, info))
- return false;
+ if (IS_ABSOLUTE_PATH (main_file_name) || directory_name == NULL)
+ *filename_ptr = main_file_name;
+ else
+ {
+ if (buf == NULL)
+ /* PR binutils/20891: In a corrupt input file both
+ main_file_name and directory_name can be empty... */
+ * filename_ptr = NULL;
+ else
+ {
+ snprintf (buf, filelen + 1, "%s%s", directory_name,
+ main_file_name);
+ *filename_ptr = buf;
+ buf += filelen + 1;
+ }
+ }
}
- /* We keep around the symbols even if we aren't going to use this
- object file, because we may want to reread it. This doesn't
- waste too much memory, because it isn't all that common to read
- an archive element but not need it. */
- if (! info->keep_memory)
+ if (func)
{
- if (! aout_link_free_symbols (abfd))
- return false;
+ const char *function = func->name;
+ char *colon;
+
+ if (buf == NULL)
+ {
+ /* PR binutils/20892: In a corrupt input file func can be empty. */
+ * functionname_ptr = NULL;
+ return TRUE;
+ }
+ /* The caller expects a symbol name. We actually have a
+ function name, without the leading underscore. Put the
+ underscore back in, so that the caller gets a symbol name. */
+ if (bfd_get_symbol_leading_char (abfd) == '\0')
+ strcpy (buf, function);
+ else
+ {
+ buf[0] = bfd_get_symbol_leading_char (abfd);
+ strcpy (buf + 1, function);
+ }
+ /* Have to remove : stuff. */
+ colon = strchr (buf, ':');
+ if (colon != NULL)
+ *colon = '\0';
+ *functionname_ptr = buf;
}
- return true;
+ return TRUE;
}
-/* Free up the internal symbols read from an a.out file. */
-
-static boolean
-aout_link_free_symbols (abfd)
- bfd *abfd;
+int
+NAME (aout, sizeof_headers) (bfd *abfd,
+ struct bfd_link_info *info ATTRIBUTE_UNUSED)
{
- if (obj_aout_external_syms (abfd) != (struct external_nlist *) NULL)
- {
- free ((PTR) obj_aout_external_syms (abfd));
- obj_aout_external_syms (abfd) = (struct external_nlist *) NULL;
- }
- if (obj_aout_external_strings (abfd) != (char *) NULL)
- {
- free ((PTR) obj_aout_external_strings (abfd));
- obj_aout_external_strings (abfd) = (char *) NULL;
- }
- return true;
+ return adata (abfd).exec_bytes_size;
}
-/* Look through the internal symbols to see if this object file should
- be included in the link. We should include this object file if it
- defines any symbols which are currently undefined. If this object
- file defines a common symbol, then we may adjust the size of the
- known symbol but we do not include the object file in the link
- (unless there is some other reason to include it). */
+/* Free all information we have cached for this BFD. We can always
+ read it again later if we need it. */
-static boolean
-aout_link_check_ar_symbols (abfd, info, pneeded)
- bfd *abfd;
- struct bfd_link_info *info;
- boolean *pneeded;
+bfd_boolean
+NAME (aout, bfd_free_cached_info) (bfd *abfd)
{
- register struct external_nlist *p;
- struct external_nlist *pend;
- char *strings;
+ asection *o;
- *pneeded = false;
+ if (bfd_get_format (abfd) != bfd_object
+ || abfd->tdata.aout_data == NULL)
+ return TRUE;
- /* Look through all the symbols. */
- p = obj_aout_external_syms (abfd);
- pend = p + obj_aout_external_sym_count (abfd);
- strings = obj_aout_external_strings (abfd);
- for (; p < pend; p++)
- {
- int type = bfd_h_get_8 (abfd, p->e_type);
- const char *name;
- struct bfd_link_hash_entry *h;
+#define BFCI_FREE(x) if (x != NULL) { free (x); x = NULL; }
+ BFCI_FREE (obj_aout_symbols (abfd));
+#ifdef USE_MMAP
+ obj_aout_external_syms (abfd) = 0;
+ bfd_free_window (&obj_aout_sym_window (abfd));
+ bfd_free_window (&obj_aout_string_window (abfd));
+ obj_aout_external_strings (abfd) = 0;
+#else
+ BFCI_FREE (obj_aout_external_syms (abfd));
+ BFCI_FREE (obj_aout_external_strings (abfd));
+#endif
+ for (o = abfd->sections; o != NULL; o = o->next)
+ BFCI_FREE (o->relocation);
+#undef BFCI_FREE
- /* Ignore symbols that are not externally visible. This is an
- optimization only, as we check the type more thoroughly
- below. */
- if (((type & N_EXT) == 0
- || (type & N_STAB) != 0
- || type == N_FN)
- && type != N_WEAKA
- && type != N_WEAKT
- && type != N_WEAKD
- && type != N_WEAKB)
- {
- if (type == N_WARNING
- || type == N_INDR)
- ++p;
- continue;
- }
+ return TRUE;
+}
+\f
+/* a.out link code. */
- name = strings + GET_WORD (abfd, p->e_strx);
- h = bfd_link_hash_lookup (info->hash, name, false, false, true);
+/* Routine to create an entry in an a.out link hash table. */
- /* We are only interested in symbols that are currently
- undefined or common. */
- if (h == (struct bfd_link_hash_entry *) NULL
- || (h->type != bfd_link_hash_undefined
- && h->type != bfd_link_hash_common))
- {
- if (type == (N_INDR | N_EXT))
- ++p;
- continue;
- }
+struct bfd_hash_entry *
+NAME (aout, link_hash_newfunc) (struct bfd_hash_entry *entry,
+ struct bfd_hash_table *table,
+ const char *string)
+{
+ struct aout_link_hash_entry *ret = (struct aout_link_hash_entry *) entry;
- if (type == (N_TEXT | N_EXT)
- || type == (N_DATA | N_EXT)
- || type == (N_BSS | N_EXT)
- || type == (N_ABS | N_EXT)
- || type == (N_INDR | N_EXT))
- {
- /* This object file defines this symbol. We must link it
- in. This is true regardless of whether the current
- definition of the symbol is undefined or common. If the
- current definition is common, we have a case in which we
- have already seen an object file including
- int a;
- and this object file from the archive includes
- int a = 5;
- In such a case we must include this object file.
+ /* Allocate the structure if it has not already been allocated by a
+ subclass. */
+ if (ret == NULL)
+ ret = (struct aout_link_hash_entry *) bfd_hash_allocate (table,
+ sizeof (* ret));
+ if (ret == NULL)
+ return NULL;
- FIXME: The SunOS 4.1.3 linker will pull in the archive
- element if the symbol is defined in the .data section,
- but not if it is defined in the .text section. That
- seems a bit crazy to me, and I haven't implemented it.
- However, it might be correct. */
- if (! (*info->callbacks->add_archive_element) (info, abfd, name))
- return false;
- *pneeded = true;
- return true;
- }
+ /* Call the allocation method of the superclass. */
+ ret = ((struct aout_link_hash_entry *)
+ _bfd_link_hash_newfunc ((struct bfd_hash_entry *) ret,
+ table, string));
+ if (ret)
+ {
+ /* Set local fields. */
+ ret->written = FALSE;
+ ret->indx = -1;
+ }
- if (type == (N_UNDF | N_EXT))
- {
- bfd_vma value;
+ return (struct bfd_hash_entry *) ret;
+}
- value = GET_WORD (abfd, p->e_value);
- if (value != 0)
- {
- /* This symbol is common in the object from the archive
- file. */
- if (h->type == bfd_link_hash_undefined)
- {
- bfd *symbfd;
+/* Initialize an a.out link hash table. */
- symbfd = h->u.undef.abfd;
- if (symbfd == (bfd *) NULL)
- {
- /* This symbol was created as undefined from
- outside BFD. We assume that we should link
- in the object file. This is done for the -u
- option in the linker. */
- if (! (*info->callbacks->add_archive_element) (info,
- abfd,
- name))
- return false;
- *pneeded = true;
- return true;
- }
- /* Turn the current link symbol into a common
- symbol. It is already on the undefs list. */
- h->type = bfd_link_hash_common;
- h->u.c.size = value;
- h->u.c.section = bfd_make_section_old_way (symbfd,
- "COMMON");
- }
- else
- {
- /* Adjust the size of the common symbol if
- necessary. */
- if (value > h->u.c.size)
- h->u.c.size = value;
- }
- }
- }
+bfd_boolean
+NAME (aout, link_hash_table_init) (struct aout_link_hash_table *table,
+ bfd *abfd,
+ struct bfd_hash_entry *(*newfunc)
+ (struct bfd_hash_entry *, struct bfd_hash_table *,
+ const char *),
+ unsigned int entsize)
+{
+ return _bfd_link_hash_table_init (&table->root, abfd, newfunc, entsize);
+}
- if (type == N_WEAKA
- || type == N_WEAKT
- || type == N_WEAKD
- || type == N_WEAKB)
- {
- /* This symbol is weak but defined. We must pull it in if
- the current link symbol is undefined, but we don't want
- it if the current link symbol is common. */
- if (h->type == bfd_link_hash_undefined)
- {
- if (! (*info->callbacks->add_archive_element) (info, abfd, name))
- return false;
- *pneeded = true;
- return true;
- }
- }
- }
+/* Create an a.out link hash table. */
- /* We do not need this object file. */
- return true;
+struct bfd_link_hash_table *
+NAME (aout, link_hash_table_create) (bfd *abfd)
+{
+ struct aout_link_hash_table *ret;
+ bfd_size_type amt = sizeof (* ret);
+
+ ret = (struct aout_link_hash_table *) bfd_malloc (amt);
+ if (ret == NULL)
+ return NULL;
+
+ if (!NAME (aout, link_hash_table_init) (ret, abfd,
+ NAME (aout, link_hash_newfunc),
+ sizeof (struct aout_link_hash_entry)))
+ {
+ free (ret);
+ return NULL;
+ }
+ return &ret->root;
}
/* Add all symbols from an object file to the hash table. */
-static boolean
-aout_link_add_symbols (abfd, info)
- bfd *abfd;
- struct bfd_link_info *info;
+static bfd_boolean
+aout_link_add_symbols (bfd *abfd, struct bfd_link_info *info)
{
- boolean (*add_one_symbol) PARAMS ((struct bfd_link_info *, bfd *,
- const char *, flagword, asection *,
- bfd_vma, const char *, boolean,
- boolean,
- struct bfd_link_hash_entry **));
+ bfd_boolean (*add_one_symbol)
+ (struct bfd_link_info *, bfd *, const char *, flagword, asection *,
+ bfd_vma, const char *, bfd_boolean, bfd_boolean,
+ struct bfd_link_hash_entry **);
+ struct external_nlist *syms;
bfd_size_type sym_count;
char *strings;
- boolean copy;
+ bfd_boolean copy;
struct aout_link_hash_entry **sym_hash;
- register struct external_nlist *p;
+ struct external_nlist *p;
struct external_nlist *pend;
+ bfd_size_type amt;
+ syms = obj_aout_external_syms (abfd);
sym_count = obj_aout_external_sym_count (abfd);
strings = obj_aout_external_strings (abfd);
if (info->keep_memory)
- copy = false;
+ copy = FALSE;
else
- copy = true;
+ copy = TRUE;
+
+ if (aout_backend_info (abfd)->add_dynamic_symbols != NULL)
+ {
+ if (! ((*aout_backend_info (abfd)->add_dynamic_symbols)
+ (abfd, info, &syms, &sym_count, &strings)))
+ return FALSE;
+ }
+
+ if (sym_count == 0)
+ return TRUE; /* Nothing to do. */
/* We keep a list of the linker hash table entries that correspond
to particular symbols. We could just look them up in the hash
table, but keeping the list is more efficient. Perhaps this
should be conditional on info->keep_memory. */
- sym_hash = ((struct aout_link_hash_entry **)
- bfd_alloc (abfd,
- ((size_t) sym_count
- * sizeof (struct aout_link_hash_entry *))));
- if (sym_hash == NULL && sym_count != 0)
- {
- bfd_set_error (bfd_error_no_memory);
- return false;
- }
+ amt = sym_count * sizeof (struct aout_link_hash_entry *);
+ sym_hash = (struct aout_link_hash_entry **) bfd_alloc (abfd, amt);
+ if (sym_hash == NULL)
+ return FALSE;
obj_aout_sym_hashes (abfd) = sym_hash;
- if ((abfd->flags & DYNAMIC) != 0
- && aout_backend_info (abfd)->add_dynamic_symbols != NULL)
- {
- if (! (*aout_backend_info (abfd)->add_dynamic_symbols) (abfd, info))
- return false;
- }
-
add_one_symbol = aout_backend_info (abfd)->add_one_symbol;
if (add_one_symbol == NULL)
add_one_symbol = _bfd_generic_link_add_one_symbol;
- p = obj_aout_external_syms (abfd);
+ p = syms;
pend = p + sym_count;
for (; p < pend; p++, sym_hash++)
{
*sym_hash = NULL;
- type = bfd_h_get_8 (abfd, p->e_type);
+ type = H_GET_8 (abfd, p->e_type);
/* Ignore debugging symbols. */
if ((type & N_STAB) != 0)
continue;
+ /* PR 19629: Corrupt binaries can contain illegal string offsets. */
+ if (GET_WORD (abfd, p->e_strx) >= obj_aout_external_string_size (abfd))
+ return FALSE;
name = strings + GET_WORD (abfd, p->e_strx);
value = GET_WORD (abfd, p->e_value);
flags = BSF_GLOBAL;
case N_INDR | N_EXT:
/* An indirect symbol. The next symbol is the symbol
which this one really is. */
- BFD_ASSERT (p + 1 < pend);
+ /* See PR 20925 for a reproducer. */
+ if (p + 1 >= pend)
+ return FALSE;
++p;
+ /* PR 19629: Corrupt binaries can contain illegal string offsets. */
+ if (GET_WORD (abfd, p->e_strx) >= obj_aout_external_string_size (abfd))
+ return FALSE;
string = strings + GET_WORD (abfd, p->e_strx);
section = bfd_ind_section_ptr;
flags |= BSF_INDIRECT;
break;
case N_WARNING:
/* A warning symbol. The next symbol is the one to warn
- about. */
- BFD_ASSERT (p + 1 < pend);
+ about. If there is no next symbol, just look away. */
+ if (p + 1 >= pend)
+ return TRUE;
++p;
string = name;
+ /* PR 19629: Corrupt binaries can contain illegal string offsets. */
+ if (GET_WORD (abfd, p->e_strx) >= obj_aout_external_string_size (abfd))
+ return FALSE;
name = strings + GET_WORD (abfd, p->e_strx);
section = bfd_und_section_ptr;
flags |= BSF_WARNING;
}
if (! ((*add_one_symbol)
- (info, abfd, name, flags, section, value, string, copy, false,
+ (info, abfd, name, flags, section, value, string, copy, FALSE,
(struct bfd_link_hash_entry **) sym_hash)))
- return false;
+ return FALSE;
+
+ /* Restrict the maximum alignment of a common symbol based on
+ the architecture, since a.out has no way to represent
+ alignment requirements of a section in a .o file. FIXME:
+ This isn't quite right: it should use the architecture of the
+ output file, not the input files. */
+ if ((*sym_hash)->root.type == bfd_link_hash_common
+ && ((*sym_hash)->root.u.c.p->alignment_power >
+ bfd_get_arch_info (abfd)->section_align_power))
+ (*sym_hash)->root.u.c.p->alignment_power =
+ bfd_get_arch_info (abfd)->section_align_power;
+
+ /* If this is a set symbol, and we are not building sets, then
+ it is possible for the hash entry to not have been set. In
+ such a case, treat the symbol as not globally defined. */
+ if ((*sym_hash)->root.type == bfd_link_hash_new)
+ {
+ BFD_ASSERT ((flags & BSF_CONSTRUCTOR) != 0);
+ *sym_hash = NULL;
+ }
if (type == (N_INDR | N_EXT) || type == N_WARNING)
++sym_hash;
}
- return true;
+ return TRUE;
}
-/* During the final link step we need to pass around a bunch of
- information, so we do it in an instance of this structure. */
+/* Free up the internal symbols read from an a.out file. */
-struct aout_final_link_info
+static bfd_boolean
+aout_link_free_symbols (bfd *abfd)
{
- /* General link information. */
- struct bfd_link_info *info;
- /* Output bfd. */
- bfd *output_bfd;
- /* Reloc file positions. */
- file_ptr treloff, dreloff;
- /* File position of symbols. */
- file_ptr symoff;
- /* String table. */
- struct strtab_hash strtab;
-};
+ if (obj_aout_external_syms (abfd) != NULL)
+ {
+#ifdef USE_MMAP
+ bfd_free_window (&obj_aout_sym_window (abfd));
+#else
+ free ((void *) obj_aout_external_syms (abfd));
+#endif
+ obj_aout_external_syms (abfd) = NULL;
+ }
+ if (obj_aout_external_strings (abfd) != NULL)
+ {
+#ifdef USE_MMAP
+ bfd_free_window (&obj_aout_string_window (abfd));
+#else
+ free ((void *) obj_aout_external_strings (abfd));
+#endif
+ obj_aout_external_strings (abfd) = NULL;
+ }
+ return TRUE;
+}
-static boolean aout_link_input_bfd
- PARAMS ((struct aout_final_link_info *, bfd *input_bfd));
-static boolean aout_link_write_symbols
- PARAMS ((struct aout_final_link_info *, bfd *input_bfd, int *symbol_map));
-static boolean aout_link_write_other_symbol
- PARAMS ((struct aout_link_hash_entry *, PTR));
-static boolean aout_link_input_section
- PARAMS ((struct aout_final_link_info *, bfd *input_bfd,
- asection *input_section, file_ptr *reloff_ptr,
- bfd_size_type rel_size, int *symbol_map));
-static boolean aout_link_input_section_std
- PARAMS ((struct aout_final_link_info *, bfd *input_bfd,
- asection *input_section, struct reloc_std_external *,
- bfd_size_type rel_size, bfd_byte *contents, int *symbol_map));
-static boolean aout_link_input_section_ext
- PARAMS ((struct aout_final_link_info *, bfd *input_bfd,
- asection *input_section, struct reloc_ext_external *,
- bfd_size_type rel_size, bfd_byte *contents, int *symbol_map));
-static INLINE asection *aout_reloc_index_to_section
- PARAMS ((bfd *, int));
-static boolean aout_link_reloc_link_order
- PARAMS ((struct aout_final_link_info *, asection *,
- struct bfd_link_order *));
+/* Add symbols from an a.out object file. */
-/* Do the final link step. This is called on the output BFD. The
- INFO structure should point to a list of BFDs linked through the
- link_next field which can be used to find each BFD which takes part
- in the output. Also, each section in ABFD should point to a list
- of bfd_link_order structures which list all the input sections for
- the output section. */
+static bfd_boolean
+aout_link_add_object_symbols (bfd *abfd, struct bfd_link_info *info)
+{
+ if (! aout_get_external_symbols (abfd))
+ return FALSE;
+ if (! aout_link_add_symbols (abfd, info))
+ return FALSE;
+ if (! info->keep_memory)
+ {
+ if (! aout_link_free_symbols (abfd))
+ return FALSE;
+ }
+ return TRUE;
+}
+
+/* Look through the internal symbols to see if this object file should
+ be included in the link. We should include this object file if it
+ defines any symbols which are currently undefined. If this object
+ file defines a common symbol, then we may adjust the size of the
+ known symbol but we do not include the object file in the link
+ (unless there is some other reason to include it). */
-boolean
-NAME(aout,final_link) (abfd, info, callback)
- bfd *abfd;
- struct bfd_link_info *info;
- void (*callback) PARAMS ((bfd *, file_ptr *, file_ptr *, file_ptr *));
+static bfd_boolean
+aout_link_check_ar_symbols (bfd *abfd,
+ struct bfd_link_info *info,
+ bfd_boolean *pneeded,
+ bfd **subsbfd)
{
- struct aout_final_link_info aout_info;
- register bfd *sub;
- bfd_size_type text_size;
- file_ptr text_end;
- register struct bfd_link_order *p;
- asection *o;
- boolean have_link_order_relocs;
+ struct external_nlist *p;
+ struct external_nlist *pend;
+ char *strings;
- aout_info.info = info;
- aout_info.output_bfd = abfd;
+ *pneeded = FALSE;
- if (! info->relocateable)
- {
- exec_hdr (abfd)->a_trsize = 0;
- exec_hdr (abfd)->a_drsize = 0;
- }
- else
+ /* Look through all the symbols. */
+ p = obj_aout_external_syms (abfd);
+ pend = p + obj_aout_external_sym_count (abfd);
+ strings = obj_aout_external_strings (abfd);
+ for (; p < pend; p++)
{
- bfd_size_type trsize, drsize;
+ int type = H_GET_8 (abfd, p->e_type);
+ const char *name;
+ struct bfd_link_hash_entry *h;
- /* Count up the relocation sizes. */
- trsize = 0;
- drsize = 0;
- for (sub = info->input_bfds; sub != (bfd *) NULL; sub = sub->link_next)
+ /* Ignore symbols that are not externally visible. This is an
+ optimization only, as we check the type more thoroughly
+ below. */
+ if (((type & N_EXT) == 0
+ || (type & N_STAB) != 0
+ || type == N_FN)
+ && type != N_WEAKA
+ && type != N_WEAKT
+ && type != N_WEAKD
+ && type != N_WEAKB)
{
- if (bfd_get_flavour (sub) == bfd_target_aout_flavour)
- {
- trsize += exec_hdr (sub)->a_trsize;
- drsize += exec_hdr (sub)->a_drsize;
- }
- else
- {
- /* FIXME: We need to identify the .text and .data sections
- and call get_reloc_upper_bound and canonicalize_reloc to
- work out the number of relocs needed, and then multiply
- by the reloc size. */
- abort ();
- }
+ if (type == N_WARNING
+ || type == N_INDR)
+ ++p;
+ continue;
}
- if (obj_textsec (abfd) != (asection *) NULL)
- trsize += (_bfd_count_link_order_relocs (obj_textsec (abfd)
- ->link_order_head)
- * obj_reloc_entry_size (abfd));
- exec_hdr (abfd)->a_trsize = trsize;
- if (obj_datasec (abfd) != (asection *) NULL)
- drsize += (_bfd_count_link_order_relocs (obj_datasec (abfd)
- ->link_order_head)
- * obj_reloc_entry_size (abfd));
- exec_hdr (abfd)->a_drsize = drsize;
- }
- exec_hdr (abfd)->a_entry = bfd_get_start_address (abfd);
+ name = strings + GET_WORD (abfd, p->e_strx);
+ h = bfd_link_hash_lookup (info->hash, name, FALSE, FALSE, TRUE);
- /* Adjust the section sizes and vmas according to the magic number.
- This sets a_text, a_data and a_bss in the exec_hdr and sets the
- filepos for each section. */
- if (! NAME(aout,adjust_sizes_and_vmas) (abfd, &text_size, &text_end))
- return false;
+ /* We are only interested in symbols that are currently
+ undefined or common. */
+ if (h == NULL
+ || (h->type != bfd_link_hash_undefined
+ && h->type != bfd_link_hash_common))
+ {
+ if (type == (N_INDR | N_EXT))
+ ++p;
+ continue;
+ }
- /* The relocation and symbol file positions differ among a.out
- targets. We are passed a callback routine from the backend
- specific code to handle this.
- FIXME: At this point we do not know how much space the symbol
- table will require. This will not work for any (nonstandard)
- a.out target that needs to know the symbol table size before it
- can compute the relocation file positions. This may or may not
- be the case for the hp300hpux target, for example. */
- (*callback) (abfd, &aout_info.treloff, &aout_info.dreloff,
- &aout_info.symoff);
- obj_textsec (abfd)->rel_filepos = aout_info.treloff;
- obj_datasec (abfd)->rel_filepos = aout_info.dreloff;
- obj_sym_filepos (abfd) = aout_info.symoff;
+ if (type == (N_TEXT | N_EXT)
+ || type == (N_DATA | N_EXT)
+ || type == (N_BSS | N_EXT)
+ || type == (N_ABS | N_EXT)
+ || type == (N_INDR | N_EXT))
+ {
+ /* This object file defines this symbol. We must link it
+ in. This is true regardless of whether the current
+ definition of the symbol is undefined or common.
- /* We keep a count of the symbols as we output them. */
- obj_aout_external_sym_count (abfd) = 0;
+ If the current definition is common, we have a case in
+ which we have already seen an object file including:
+ int a;
+ and this object file from the archive includes:
+ int a = 5;
+ In such a case, whether to include this object is target
+ dependant for backward compatibility.
- /* We accumulate the string table as we write out the symbols. */
- if (! stringtab_init (&aout_info.strtab))
- return false;
+ FIXME: The SunOS 4.1.3 linker will pull in the archive
+ element if the symbol is defined in the .data section,
+ but not if it is defined in the .text section. That
+ seems a bit crazy to me, and it has not been implemented
+ yet. However, it might be correct. */
+ if (h->type == bfd_link_hash_common)
+ {
+ int skip = 0;
- /* The most time efficient way to do the link would be to read all
- the input object files into memory and then sort out the
- information into the output file. Unfortunately, that will
- probably use too much memory. Another method would be to step
- through everything that composes the text section and write it
- out, and then everything that composes the data section and write
- it out, and then write out the relocs, and then write out the
- symbols. Unfortunately, that requires reading stuff from each
- input file several times, and we will not be able to keep all the
- input files open simultaneously, and reopening them will be slow.
+ switch (info->common_skip_ar_symbols)
+ {
+ case bfd_link_common_skip_none:
+ break;
+ case bfd_link_common_skip_text:
+ skip = (type == (N_TEXT | N_EXT));
+ break;
+ case bfd_link_common_skip_data:
+ skip = (type == (N_DATA | N_EXT));
+ break;
+ case bfd_link_common_skip_all:
+ skip = 1;
+ break;
+ }
- What we do is basically process one input file at a time. We do
- everything we need to do with an input file once--copy over the
- section contents, handle the relocation information, and write
- out the symbols--and then we throw away the information we read
- from it. This approach requires a lot of lseeks of the output
- file, which is unfortunate but still faster than reopening a lot
- of files.
+ if (skip)
+ continue;
+ }
- We use the output_has_begun field of the input BFDs to see
- whether we have already handled it. */
- for (sub = info->input_bfds; sub != (bfd *) NULL; sub = sub->link_next)
- sub->output_has_begun = false;
+ if (!(*info->callbacks
+ ->add_archive_element) (info, abfd, name, subsbfd))
+ return FALSE;
+ *pneeded = TRUE;
+ return TRUE;
+ }
- have_link_order_relocs = false;
- for (o = abfd->sections; o != (asection *) NULL; o = o->next)
- {
- for (p = o->link_order_head;
- p != (struct bfd_link_order *) NULL;
- p = p->next)
+ if (type == (N_UNDF | N_EXT))
{
- if (p->type == bfd_indirect_link_order
- && (bfd_get_flavour (p->u.indirect.section->owner)
- == bfd_target_aout_flavour))
+ bfd_vma value;
+
+ value = GET_WORD (abfd, p->e_value);
+ if (value != 0)
{
- bfd *input_bfd;
+ /* This symbol is common in the object from the archive
+ file. */
+ if (h->type == bfd_link_hash_undefined)
+ {
+ bfd *symbfd;
+ unsigned int power;
- input_bfd = p->u.indirect.section->owner;
- if (! input_bfd->output_has_begun)
+ symbfd = h->u.undef.abfd;
+ if (symbfd == NULL)
+ {
+ /* This symbol was created as undefined from
+ outside BFD. We assume that we should link
+ in the object file. This is done for the -u
+ option in the linker. */
+ if (!(*info->callbacks
+ ->add_archive_element) (info, abfd, name, subsbfd))
+ return FALSE;
+ *pneeded = TRUE;
+ return TRUE;
+ }
+ /* Turn the current link symbol into a common
+ symbol. It is already on the undefs list. */
+ h->type = bfd_link_hash_common;
+ h->u.c.p = (struct bfd_link_hash_common_entry *)
+ bfd_hash_allocate (&info->hash->table,
+ sizeof (struct bfd_link_hash_common_entry));
+ if (h->u.c.p == NULL)
+ return FALSE;
+
+ h->u.c.size = value;
+
+ /* FIXME: This isn't quite right. The maximum
+ alignment of a common symbol should be set by the
+ architecture of the output file, not of the input
+ file. */
+ power = bfd_log2 (value);
+ if (power > bfd_get_arch_info (abfd)->section_align_power)
+ power = bfd_get_arch_info (abfd)->section_align_power;
+ h->u.c.p->alignment_power = power;
+
+ h->u.c.p->section = bfd_make_section_old_way (symbfd,
+ "COMMON");
+ }
+ else
{
- if (! aout_link_input_bfd (&aout_info, input_bfd))
- return false;
- input_bfd->output_has_begun = true;
+ /* Adjust the size of the common symbol if
+ necessary. */
+ if (value > h->u.c.size)
+ h->u.c.size = value;
}
}
- else if (p->type == bfd_section_reloc_link_order
- || p->type == bfd_symbol_reloc_link_order)
- {
- /* These are handled below. */
- have_link_order_relocs = true;
- }
- else
- {
- if (! _bfd_default_link_order (abfd, info, o, p))
- return false;
- }
}
- }
-
- /* Write out any symbols that we have not already written out. */
- aout_link_hash_traverse (aout_hash_table (info),
- aout_link_write_other_symbol,
- (PTR) &aout_info);
- /* Now handle any relocs we were asked to create by the linker.
- These did not come from any input file. We must do these after
- we have written out all the symbols, so that we know the symbol
- indices to use. */
- if (have_link_order_relocs)
- {
- for (o = abfd->sections; o != (asection *) NULL; o = o->next)
+ if (type == N_WEAKA
+ || type == N_WEAKT
+ || type == N_WEAKD
+ || type == N_WEAKB)
{
- for (p = o->link_order_head;
- p != (struct bfd_link_order *) NULL;
- p = p->next)
+ /* This symbol is weak but defined. We must pull it in if
+ the current link symbol is undefined, but we don't want
+ it if the current link symbol is common. */
+ if (h->type == bfd_link_hash_undefined)
{
- if (p->type == bfd_section_reloc_link_order
- || p->type == bfd_symbol_reloc_link_order)
- {
- if (! aout_link_reloc_link_order (&aout_info, o, p))
- return false;
- }
+ if (!(*info->callbacks
+ ->add_archive_element) (info, abfd, name, subsbfd))
+ return FALSE;
+ *pneeded = TRUE;
+ return TRUE;
}
}
}
- /* Finish up any dynamic linking we may be doing. */
- if (aout_backend_info (abfd)->finish_dynamic_link != NULL)
- {
- if (! (*aout_backend_info (abfd)->finish_dynamic_link) (abfd, info))
- return false;
- }
-
- /* Update the header information. */
- abfd->symcount = obj_aout_external_sym_count (abfd);
- exec_hdr (abfd)->a_syms = abfd->symcount * EXTERNAL_NLIST_SIZE;
- obj_str_filepos (abfd) = obj_sym_filepos (abfd) + exec_hdr (abfd)->a_syms;
- obj_textsec (abfd)->reloc_count =
- exec_hdr (abfd)->a_trsize / obj_reloc_entry_size (abfd);
- obj_datasec (abfd)->reloc_count =
- exec_hdr (abfd)->a_drsize / obj_reloc_entry_size (abfd);
-
- /* Write out the string table. */
- if (bfd_seek (abfd, obj_str_filepos (abfd), SEEK_SET) != 0)
- return false;
- return emit_stringtab (abfd, &aout_info.strtab);
+ /* We do not need this object file. */
+ return TRUE;
}
+/* Check a single archive element to see if we need to include it in
+ the link. *PNEEDED is set according to whether this element is
+ needed in the link or not. This is called from
+ _bfd_generic_link_add_archive_symbols. */
-/* Link an a.out input BFD into the output file. */
-
-static boolean
-aout_link_input_bfd (finfo, input_bfd)
- struct aout_final_link_info *finfo;
- bfd *input_bfd;
+static bfd_boolean
+aout_link_check_archive_element (bfd *abfd,
+ struct bfd_link_info *info,
+ struct bfd_link_hash_entry *h ATTRIBUTE_UNUSED,
+ const char *name ATTRIBUTE_UNUSED,
+ bfd_boolean *pneeded)
{
- bfd_size_type sym_count;
- int *symbol_map = NULL;
+ bfd *oldbfd;
+ bfd_boolean needed;
- BFD_ASSERT (bfd_get_format (input_bfd) == bfd_object);
+ if (!aout_get_external_symbols (abfd))
+ return FALSE;
- /* If this is a dynamic object, it may need special handling. */
- if ((input_bfd->flags & DYNAMIC) != 0
- && aout_backend_info (input_bfd)->link_dynamic_object != NULL)
+ oldbfd = abfd;
+ if (!aout_link_check_ar_symbols (abfd, info, pneeded, &abfd))
+ return FALSE;
+
+ needed = *pneeded;
+ if (needed)
{
- return ((*aout_backend_info (input_bfd)->link_dynamic_object)
- (finfo->info, input_bfd));
+ /* Potentially, the add_archive_element hook may have set a
+ substitute BFD for us. */
+ if (abfd != oldbfd)
+ {
+ if (!info->keep_memory
+ && !aout_link_free_symbols (oldbfd))
+ return FALSE;
+ if (!aout_get_external_symbols (abfd))
+ return FALSE;
+ }
+ if (!aout_link_add_symbols (abfd, info))
+ return FALSE;
}
- /* Get the symbols. We probably have them already, unless
- finfo->info->keep_memory is false. */
- if (! aout_get_external_symbols (input_bfd))
- return false;
-
- sym_count = obj_aout_external_sym_count (input_bfd);
- symbol_map = (int *) malloc ((size_t) sym_count * sizeof (int));
- if (symbol_map == NULL && sym_count != 0)
+ if (!info->keep_memory || !needed)
{
- bfd_set_error (bfd_error_no_memory);
- return false;
+ if (!aout_link_free_symbols (abfd))
+ return FALSE;
}
- /* Write out the symbols and get a map of the new indices. */
- if (! aout_link_write_symbols (finfo, input_bfd, symbol_map))
- goto error_return;
+ return TRUE;
+}
- /* Relocate and write out the sections. */
- if (! aout_link_input_section (finfo, input_bfd,
- obj_textsec (input_bfd),
- &finfo->treloff,
- exec_hdr (input_bfd)->a_trsize,
- symbol_map)
- || ! aout_link_input_section (finfo, input_bfd,
- obj_datasec (input_bfd),
- &finfo->dreloff,
- exec_hdr (input_bfd)->a_drsize,
- symbol_map))
- goto error_return;
+/* Given an a.out BFD, add symbols to the global hash table as
+ appropriate. */
- /* If we are not keeping memory, we don't need the symbols any
- longer. We still need them if we are keeping memory, because the
- strings in the hash table point into them. */
- if (! finfo->info->keep_memory)
+bfd_boolean
+NAME (aout, link_add_symbols) (bfd *abfd, struct bfd_link_info *info)
+{
+ switch (bfd_get_format (abfd))
{
- if (! aout_link_free_symbols (input_bfd))
- goto error_return;
+ case bfd_object:
+ return aout_link_add_object_symbols (abfd, info);
+ case bfd_archive:
+ return _bfd_generic_link_add_archive_symbols
+ (abfd, info, aout_link_check_archive_element);
+ default:
+ bfd_set_error (bfd_error_wrong_format);
+ return FALSE;
}
+}
+\f
+/* A hash table used for header files with N_BINCL entries. */
- if (symbol_map != NULL)
- free (symbol_map);
- return true;
- error_return:
- if (symbol_map != NULL)
- free (symbol_map);
- return false;
+struct aout_link_includes_table
+{
+ struct bfd_hash_table root;
+};
+
+/* A linked list of totals that we have found for a particular header
+ file. */
+
+struct aout_link_includes_totals
+{
+ struct aout_link_includes_totals *next;
+ bfd_vma total;
+};
+
+/* An entry in the header file hash table. */
+
+struct aout_link_includes_entry
+{
+ struct bfd_hash_entry root;
+ /* List of totals we have found for this file. */
+ struct aout_link_includes_totals *totals;
+};
+
+/* Look up an entry in an the header file hash table. */
+
+#define aout_link_includes_lookup(table, string, create, copy) \
+ ((struct aout_link_includes_entry *) \
+ bfd_hash_lookup (&(table)->root, (string), (create), (copy)))
+
+/* During the final link step we need to pass around a bunch of
+ information, so we do it in an instance of this structure. */
+
+struct aout_final_link_info
+{
+ /* General link information. */
+ struct bfd_link_info *info;
+ /* Output bfd. */
+ bfd *output_bfd;
+ /* Reloc file positions. */
+ file_ptr treloff, dreloff;
+ /* File position of symbols. */
+ file_ptr symoff;
+ /* String table. */
+ struct bfd_strtab_hash *strtab;
+ /* Header file hash table. */
+ struct aout_link_includes_table includes;
+ /* A buffer large enough to hold the contents of any section. */
+ bfd_byte *contents;
+ /* A buffer large enough to hold the relocs of any section. */
+ void * relocs;
+ /* A buffer large enough to hold the symbol map of any input BFD. */
+ int *symbol_map;
+ /* A buffer large enough to hold output symbols of any input BFD. */
+ struct external_nlist *output_syms;
+};
+
+/* The function to create a new entry in the header file hash table. */
+
+static struct bfd_hash_entry *
+aout_link_includes_newfunc (struct bfd_hash_entry *entry,
+ struct bfd_hash_table *table,
+ const char *string)
+{
+ struct aout_link_includes_entry *ret =
+ (struct aout_link_includes_entry *) entry;
+
+ /* Allocate the structure if it has not already been allocated by a
+ subclass. */
+ if (ret == NULL)
+ ret = (struct aout_link_includes_entry *)
+ bfd_hash_allocate (table, sizeof (* ret));
+ if (ret == NULL)
+ return NULL;
+
+ /* Call the allocation method of the superclass. */
+ ret = ((struct aout_link_includes_entry *)
+ bfd_hash_newfunc ((struct bfd_hash_entry *) ret, table, string));
+ if (ret)
+ {
+ /* Set local fields. */
+ ret->totals = NULL;
+ }
+
+ return (struct bfd_hash_entry *) ret;
}
-/* Adjust and write out the symbols for an a.out file. Set the new
- symbol indices into a symbol_map. */
+/* Write out a symbol that was not associated with an a.out input
+ object. */
-static boolean
-aout_link_write_symbols (finfo, input_bfd, symbol_map)
- struct aout_final_link_info *finfo;
- bfd *input_bfd;
- int *symbol_map;
+static bfd_boolean
+aout_link_write_other_symbol (struct bfd_hash_entry *bh, void *data)
{
+ struct aout_link_hash_entry *h = (struct aout_link_hash_entry *) bh;
+ struct aout_final_link_info *flaginfo = (struct aout_final_link_info *) data;
bfd *output_bfd;
- bfd_size_type sym_count;
- char *strings;
- enum bfd_link_strip strip;
- enum bfd_link_discard discard;
- struct external_nlist *output_syms = NULL;
- struct external_nlist *outsym;
- bfd_size_type strtab_index;
- register struct external_nlist *sym;
- struct external_nlist *sym_end;
- struct aout_link_hash_entry **sym_hash;
- boolean pass;
- boolean skip_indirect;
+ int type;
+ bfd_vma val;
+ struct external_nlist outsym;
+ bfd_size_type indx;
+ bfd_size_type amt;
- output_bfd = finfo->output_bfd;
- sym_count = obj_aout_external_sym_count (input_bfd);
- strings = obj_aout_external_strings (input_bfd);
- strip = finfo->info->strip;
- discard = finfo->info->discard;
- output_syms = ((struct external_nlist *)
- malloc ((size_t) (sym_count + 1) * EXTERNAL_NLIST_SIZE));
- if (output_syms == NULL)
+ if (h->root.type == bfd_link_hash_warning)
{
- bfd_set_error (bfd_error_no_memory);
- goto error_return;
+ h = (struct aout_link_hash_entry *) h->root.u.i.link;
+ if (h->root.type == bfd_link_hash_new)
+ return TRUE;
}
- outsym = output_syms;
- /* First write out a symbol for this object file, unless we are
- discarding such symbols. */
- if (strip != strip_all
- && (strip != strip_some
- || bfd_hash_lookup (finfo->info->keep_hash, input_bfd->filename,
- false, false) != NULL)
- && discard != discard_all)
+ output_bfd = flaginfo->output_bfd;
+
+ if (aout_backend_info (output_bfd)->write_dynamic_symbol != NULL)
{
- bfd_h_put_8 (output_bfd, N_TEXT, outsym->e_type);
- bfd_h_put_8 (output_bfd, 0, outsym->e_other);
- bfd_h_put_16 (output_bfd, (bfd_vma) 0, outsym->e_desc);
- strtab_index = add_to_stringtab (output_bfd, &finfo->strtab,
- input_bfd->filename, false);
- if (strtab_index == (bfd_size_type) -1)
- goto error_return;
- PUT_WORD (output_bfd, strtab_index, outsym->e_strx);
- PUT_WORD (output_bfd,
- (bfd_get_section_vma (output_bfd,
- obj_textsec (input_bfd)->output_section)
- + obj_textsec (input_bfd)->output_offset),
- outsym->e_value);
- ++obj_aout_external_sym_count (output_bfd);
- ++outsym;
+ if (! ((*aout_backend_info (output_bfd)->write_dynamic_symbol)
+ (output_bfd, flaginfo->info, h)))
+ {
+ /* FIXME: No way to handle errors. */
+ abort ();
+ }
}
- pass = false;
- skip_indirect = false;
- sym = obj_aout_external_syms (input_bfd);
- sym_end = sym + sym_count;
- sym_hash = obj_aout_sym_hashes (input_bfd);
- for (; sym < sym_end; sym++, sym_hash++, symbol_map++)
+ if (h->written)
+ return TRUE;
+
+ h->written = TRUE;
+
+ /* An indx of -2 means the symbol must be written. */
+ if (h->indx != -2
+ && (flaginfo->info->strip == strip_all
+ || (flaginfo->info->strip == strip_some
+ && bfd_hash_lookup (flaginfo->info->keep_hash, h->root.root.string,
+ FALSE, FALSE) == NULL)))
+ return TRUE;
+
+ switch (h->root.type)
{
- const char *name;
- int type;
- struct aout_link_hash_entry *h;
- boolean skip;
- asection *symsec;
- bfd_vma val = 0;
- boolean copy;
+ default:
+ case bfd_link_hash_warning:
+ abort ();
+ /* Avoid variable not initialized warnings. */
+ return TRUE;
+ case bfd_link_hash_new:
+ /* This can happen for set symbols when sets are not being
+ built. */
+ return TRUE;
+ case bfd_link_hash_undefined:
+ type = N_UNDF | N_EXT;
+ val = 0;
+ break;
+ case bfd_link_hash_defined:
+ case bfd_link_hash_defweak:
+ {
+ asection *sec;
- *symbol_map = -1;
+ sec = h->root.u.def.section->output_section;
+ BFD_ASSERT (bfd_is_abs_section (sec)
+ || sec->owner == output_bfd);
+ if (sec == obj_textsec (output_bfd))
+ type = h->root.type == bfd_link_hash_defined ? N_TEXT : N_WEAKT;
+ else if (sec == obj_datasec (output_bfd))
+ type = h->root.type == bfd_link_hash_defined ? N_DATA : N_WEAKD;
+ else if (sec == obj_bsssec (output_bfd))
+ type = h->root.type == bfd_link_hash_defined ? N_BSS : N_WEAKB;
+ else
+ type = h->root.type == bfd_link_hash_defined ? N_ABS : N_WEAKA;
+ type |= N_EXT;
+ val = (h->root.u.def.value
+ + sec->vma
+ + h->root.u.def.section->output_offset);
+ }
+ break;
+ case bfd_link_hash_common:
+ type = N_UNDF | N_EXT;
+ val = h->root.u.c.size;
+ break;
+ case bfd_link_hash_undefweak:
+ type = N_WEAKU;
+ val = 0;
+ break;
+ case bfd_link_hash_indirect:
+ /* We ignore these symbols, since the indirected symbol is
+ already in the hash table. */
+ return TRUE;
+ }
- type = bfd_h_get_8 (input_bfd, sym->e_type);
- name = strings + GET_WORD (input_bfd, sym->e_strx);
+ H_PUT_8 (output_bfd, type, outsym.e_type);
+ H_PUT_8 (output_bfd, 0, outsym.e_other);
+ H_PUT_16 (output_bfd, 0, outsym.e_desc);
+ indx = add_to_stringtab (output_bfd, flaginfo->strtab, h->root.root.string,
+ FALSE);
+ if (indx == - (bfd_size_type) 1)
+ /* FIXME: No way to handle errors. */
+ abort ();
- h = NULL;
+ PUT_WORD (output_bfd, indx, outsym.e_strx);
+ PUT_WORD (output_bfd, val, outsym.e_value);
- if (pass)
+ amt = EXTERNAL_NLIST_SIZE;
+ if (bfd_seek (output_bfd, flaginfo->symoff, SEEK_SET) != 0
+ || bfd_bwrite ((void *) &outsym, amt, output_bfd) != amt)
+ /* FIXME: No way to handle errors. */
+ abort ();
+
+ flaginfo->symoff += EXTERNAL_NLIST_SIZE;
+ h->indx = obj_aout_external_sym_count (output_bfd);
+ ++obj_aout_external_sym_count (output_bfd);
+
+ return TRUE;
+}
+
+/* Handle a link order which is supposed to generate a reloc. */
+
+static bfd_boolean
+aout_link_reloc_link_order (struct aout_final_link_info *flaginfo,
+ asection *o,
+ struct bfd_link_order *p)
+{
+ struct bfd_link_order_reloc *pr;
+ int r_index;
+ int r_extern;
+ reloc_howto_type *howto;
+ file_ptr *reloff_ptr = NULL;
+ struct reloc_std_external srel;
+ struct reloc_ext_external erel;
+ void * rel_ptr;
+ bfd_size_type amt;
+
+ pr = p->u.reloc.p;
+
+ if (p->type == bfd_section_reloc_link_order)
+ {
+ r_extern = 0;
+ if (bfd_is_abs_section (pr->u.section))
+ r_index = N_ABS | N_EXT;
+ else
{
- /* Pass this symbol through. It is the target of an
- indirect or warning symbol. */
- val = GET_WORD (input_bfd, sym->e_value);
- pass = false;
+ BFD_ASSERT (pr->u.section->owner == flaginfo->output_bfd);
+ r_index = pr->u.section->target_index;
}
- else if (skip_indirect)
+ }
+ else
+ {
+ struct aout_link_hash_entry *h;
+
+ BFD_ASSERT (p->type == bfd_symbol_reloc_link_order);
+ r_extern = 1;
+ h = ((struct aout_link_hash_entry *)
+ bfd_wrapped_link_hash_lookup (flaginfo->output_bfd, flaginfo->info,
+ pr->u.name, FALSE, FALSE, TRUE));
+ if (h != NULL
+ && h->indx >= 0)
+ r_index = h->indx;
+ else if (h != NULL)
{
- /* Skip this symbol, which is the target of an indirect
- symbol that we have changed to no longer be an indirect
+ /* We decided to strip this symbol, but it turns out that we
+ can't. Note that we lose the other and desc information
+ here. I don't think that will ever matter for a global
symbol. */
- skip_indirect = false;
- continue;
+ h->indx = -2;
+ h->written = FALSE;
+ if (!aout_link_write_other_symbol (&h->root.root, flaginfo))
+ return FALSE;
+ r_index = h->indx;
}
else
{
- struct aout_link_hash_entry *hresolve;
+ (*flaginfo->info->callbacks->unattached_reloc)
+ (flaginfo->info, pr->u.name, NULL, NULL, (bfd_vma) 0);
+ r_index = 0;
+ }
+ }
- /* We have saved the hash table entry for this symbol, if
- there is one. Note that we could just look it up again
- in the hash table, provided we first check that it is an
- external symbol. */
- h = *sym_hash;
+ howto = bfd_reloc_type_lookup (flaginfo->output_bfd, pr->reloc);
+ if (howto == 0)
+ {
+ bfd_set_error (bfd_error_bad_value);
+ return FALSE;
+ }
- /* If this is an indirect or warning symbol, then change
- hresolve to the base symbol. We also change *sym_hash so
- that the relocation routines relocate against the real
- symbol. */
- hresolve = h;
- if (h != (struct aout_link_hash_entry *) NULL
- && (h->root.type == bfd_link_hash_indirect
- || h->root.type == bfd_link_hash_warning))
- {
- hresolve = (struct aout_link_hash_entry *) h->root.u.i.link;
- while (hresolve->root.type == bfd_link_hash_indirect
- || hresolve->root.type == bfd_link_hash_warning)
- hresolve = ((struct aout_link_hash_entry *)
- hresolve->root.u.i.link);
- *sym_hash = hresolve;
- }
+ if (o == obj_textsec (flaginfo->output_bfd))
+ reloff_ptr = &flaginfo->treloff;
+ else if (o == obj_datasec (flaginfo->output_bfd))
+ reloff_ptr = &flaginfo->dreloff;
+ else
+ abort ();
- /* If the symbol has already been written out, skip it. */
- if (h != (struct aout_link_hash_entry *) NULL
- && h->root.type != bfd_link_hash_warning
- && h->written)
- {
- if ((type & N_TYPE) == N_INDR)
- skip_indirect = true;
- *symbol_map = h->indx;
- continue;
- }
+ if (obj_reloc_entry_size (flaginfo->output_bfd) == RELOC_STD_SIZE)
+ {
+#ifdef MY_put_reloc
+ MY_put_reloc (flaginfo->output_bfd, r_extern, r_index, p->offset, howto,
+ &srel);
+#else
+ {
+ int r_pcrel;
+ int r_baserel;
+ int r_jmptable;
+ int r_relative;
+ int r_length;
+
+ r_pcrel = (int) howto->pc_relative;
+ r_baserel = (howto->type & 8) != 0;
+ r_jmptable = (howto->type & 16) != 0;
+ r_relative = (howto->type & 32) != 0;
+ r_length = howto->size;
+
+ PUT_WORD (flaginfo->output_bfd, p->offset, srel.r_address);
+ if (bfd_header_big_endian (flaginfo->output_bfd))
+ {
+ srel.r_index[0] = r_index >> 16;
+ srel.r_index[1] = r_index >> 8;
+ srel.r_index[2] = r_index;
+ srel.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
+ {
+ srel.r_index[2] = r_index >> 16;
+ srel.r_index[1] = r_index >> 8;
+ srel.r_index[0] = r_index;
+ srel.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));
+ }
+ }
+#endif
+ rel_ptr = (void *) &srel;
- /* See if we are stripping this symbol. */
- skip = false;
- switch (strip)
- {
- case strip_none:
- break;
- case strip_debugger:
- if ((type & N_STAB) != 0)
- skip = true;
- break;
- case strip_some:
- if (bfd_hash_lookup (finfo->info->keep_hash, name, false, false)
- == NULL)
- skip = true;
- break;
- case strip_all:
- skip = true;
- break;
- }
- if (skip)
- {
- if (h != (struct aout_link_hash_entry *) NULL)
- h->written = true;
- continue;
- }
+ /* We have to write the addend into the object file, since
+ standard a.out relocs are in place. It would be more
+ reliable if we had the current contents of the file here,
+ rather than assuming zeroes, but we can't read the file since
+ it was opened using bfd_openw. */
+ if (pr->addend != 0)
+ {
+ bfd_size_type size;
+ bfd_reloc_status_type r;
+ bfd_byte *buf;
+ bfd_boolean ok;
- /* Get the value of the symbol. */
- if ((type & N_TYPE) == N_TEXT
- || type == N_WEAKT)
- symsec = obj_textsec (input_bfd);
- else if ((type & N_TYPE) == N_DATA
- || type == N_WEAKD)
- symsec = obj_datasec (input_bfd);
- else if ((type & N_TYPE) == N_BSS
- || type == N_WEAKB)
- symsec = obj_bsssec (input_bfd);
- else if ((type & N_TYPE) == N_ABS
- || type == N_WEAKA)
- symsec = bfd_abs_section_ptr;
- else if (((type & N_TYPE) == N_INDR
- && (hresolve == (struct aout_link_hash_entry *) NULL
- || (hresolve->root.type != bfd_link_hash_defined
- && hresolve->root.type != bfd_link_hash_common)))
- || type == N_WARNING)
- {
- /* Pass the next symbol through unchanged. The
- condition above for indirect symbols is so that if
- the indirect symbol was defined, we output it with
- the correct definition so the debugger will
- understand it. */
- pass = true;
- val = GET_WORD (input_bfd, sym->e_value);
- symsec = NULL;
- }
- else if ((type & N_STAB) != 0)
+ size = bfd_get_reloc_size (howto);
+ buf = (bfd_byte *) bfd_zmalloc (size);
+ if (buf == NULL && size != 0)
+ return FALSE;
+ r = MY_relocate_contents (howto, flaginfo->output_bfd,
+ (bfd_vma) pr->addend, buf);
+ switch (r)
{
- val = GET_WORD (input_bfd, sym->e_value);
- symsec = NULL;
+ case bfd_reloc_ok:
+ break;
+ default:
+ case bfd_reloc_outofrange:
+ abort ();
+ case bfd_reloc_overflow:
+ (*flaginfo->info->callbacks->reloc_overflow)
+ (flaginfo->info, NULL,
+ (p->type == bfd_section_reloc_link_order
+ ? bfd_section_name (flaginfo->output_bfd,
+ pr->u.section)
+ : pr->u.name),
+ howto->name, pr->addend, NULL, NULL, (bfd_vma) 0);
+ break;
}
- else
- {
- /* If we get here with an indirect symbol, it means that
- we are outputting it with a real definition. In such
- a case we do not want to output the next symbol,
- which is the target of the indirection. */
- if ((type & N_TYPE) == N_INDR)
- skip_indirect = true;
+ ok = bfd_set_section_contents (flaginfo->output_bfd, o, (void *) buf,
+ (file_ptr) p->offset, size);
+ free (buf);
+ if (! ok)
+ return FALSE;
+ }
+ }
+ else
+ {
+#ifdef MY_put_ext_reloc
+ MY_put_ext_reloc (flaginfo->output_bfd, r_extern, r_index, p->offset,
+ howto, &erel, pr->addend);
+#else
+ PUT_WORD (flaginfo->output_bfd, p->offset, erel.r_address);
- /* We need to get the value from the hash table. We use
- hresolve so that if we have defined an indirect
- symbol we output the final definition. */
- if (h == (struct aout_link_hash_entry *) NULL)
- val = 0;
- else if (hresolve->root.type == bfd_link_hash_defined)
- {
- asection *input_section;
- asection *output_section;
+ if (bfd_header_big_endian (flaginfo->output_bfd))
+ {
+ erel.r_index[0] = r_index >> 16;
+ erel.r_index[1] = r_index >> 8;
+ erel.r_index[2] = r_index;
+ erel.r_type[0] =
+ ((r_extern ? RELOC_EXT_BITS_EXTERN_BIG : 0)
+ | (howto->type << RELOC_EXT_BITS_TYPE_SH_BIG));
+ }
+ else
+ {
+ erel.r_index[2] = r_index >> 16;
+ erel.r_index[1] = r_index >> 8;
+ erel.r_index[0] = r_index;
+ erel.r_type[0] =
+ (r_extern ? RELOC_EXT_BITS_EXTERN_LITTLE : 0)
+ | (howto->type << RELOC_EXT_BITS_TYPE_SH_LITTLE);
+ }
- /* This case means a common symbol which was turned
- into a defined symbol. */
- input_section = hresolve->root.u.def.section;
- output_section = input_section->output_section;
- BFD_ASSERT (bfd_is_abs_section (output_section)
- || output_section->owner == output_bfd);
- val = (hresolve->root.u.def.value
- + bfd_get_section_vma (output_bfd, output_section)
- + input_section->output_offset);
+ PUT_WORD (flaginfo->output_bfd, (bfd_vma) pr->addend, erel.r_addend);
+#endif /* MY_put_ext_reloc */
- /* Get the correct type based on the section. If
- this is a constructed set, force it to be
- globally visible. */
- if (type == N_SETT
- || type == N_SETD
- || type == N_SETB
- || type == N_SETA)
- type |= N_EXT;
+ rel_ptr = (void *) &erel;
+ }
- type &=~ N_TYPE;
+ amt = obj_reloc_entry_size (flaginfo->output_bfd);
+ if (bfd_seek (flaginfo->output_bfd, *reloff_ptr, SEEK_SET) != 0
+ || bfd_bwrite (rel_ptr, amt, flaginfo->output_bfd) != amt)
+ return FALSE;
- if (output_section == obj_textsec (output_bfd))
- type |= N_TEXT;
- else if (output_section == obj_datasec (output_bfd))
- type |= N_DATA;
- else if (output_section == obj_bsssec (output_bfd))
- type |= N_BSS;
- else
- type |= N_ABS;
- }
- else if (hresolve->root.type == bfd_link_hash_common)
- val = hresolve->root.u.c.size;
- else if (hresolve->root.type == bfd_link_hash_weak)
- {
- val = 0;
- type = N_WEAKU;
- }
- else
- val = 0;
+ *reloff_ptr += obj_reloc_entry_size (flaginfo->output_bfd);
- symsec = NULL;
- }
- if (symsec != (asection *) NULL)
- val = (symsec->output_section->vma
- + symsec->output_offset
- + (GET_WORD (input_bfd, sym->e_value)
- - symsec->vma));
+ /* Assert that the relocs have not run into the symbols, and that n
+ the text relocs have not run into the data relocs. */
+ BFD_ASSERT (*reloff_ptr <= obj_sym_filepos (flaginfo->output_bfd)
+ && (reloff_ptr != &flaginfo->treloff
+ || (*reloff_ptr
+ <= obj_datasec (flaginfo->output_bfd)->rel_filepos)));
- /* If this is a global symbol set the written flag, and if
- it is a local symbol see if we should discard it. */
- if (h != (struct aout_link_hash_entry *) NULL)
- {
- h->written = true;
- h->indx = obj_aout_external_sym_count (output_bfd);
- }
- else
- {
- switch (discard)
- {
- case discard_none:
- break;
- case discard_l:
- if (*name == *finfo->info->lprefix
- && (finfo->info->lprefix_len == 1
- || strncmp (name, finfo->info->lprefix,
- finfo->info->lprefix_len) == 0))
- skip = true;
- break;
- case discard_all:
- skip = true;
- break;
- }
- if (skip)
- {
- pass = false;
- continue;
- }
- }
- }
+ return TRUE;
+}
- /* Copy this symbol into the list of symbols we are going to
- write out. */
- bfd_h_put_8 (output_bfd, type, outsym->e_type);
- bfd_h_put_8 (output_bfd, bfd_h_get_8 (input_bfd, sym->e_other),
- outsym->e_other);
- bfd_h_put_16 (output_bfd, bfd_h_get_16 (input_bfd, sym->e_desc),
- outsym->e_desc);
- copy = false;
- if (! finfo->info->keep_memory)
- {
- /* name points into a string table which we are going to
- free. If there is a hash table entry, use that string.
- Otherwise, copy name into memory. */
- if (h != (struct aout_link_hash_entry *) NULL)
- name = (*sym_hash)->root.root.string;
- else
- copy = true;
- }
- strtab_index = add_to_stringtab (output_bfd, &finfo->strtab,
- name, copy);
- if (strtab_index == (bfd_size_type) -1)
- goto error_return;
- PUT_WORD (output_bfd, strtab_index, outsym->e_strx);
- PUT_WORD (output_bfd, val, outsym->e_value);
- *symbol_map = obj_aout_external_sym_count (output_bfd);
- ++obj_aout_external_sym_count (output_bfd);
- ++outsym;
- }
+/* Get the section corresponding to a reloc index. */
- /* Write out the output symbols we have just constructed. */
- if (outsym > output_syms)
+static INLINE asection *
+aout_reloc_index_to_section (bfd *abfd, int indx)
+{
+ switch (indx & N_TYPE)
{
- bfd_size_type outsym_count;
-
- if (bfd_seek (output_bfd, finfo->symoff, SEEK_SET) != 0)
- goto error_return;
- outsym_count = outsym - output_syms;
- if (bfd_write ((PTR) output_syms, (bfd_size_type) EXTERNAL_NLIST_SIZE,
- (bfd_size_type) outsym_count, output_bfd)
- != outsym_count * EXTERNAL_NLIST_SIZE)
- goto error_return;
- finfo->symoff += outsym_count * EXTERNAL_NLIST_SIZE;
+ case N_TEXT: return obj_textsec (abfd);
+ case N_DATA: return obj_datasec (abfd);
+ case N_BSS: return obj_bsssec (abfd);
+ case N_ABS:
+ case N_UNDF: return bfd_abs_section_ptr;
+ default: abort ();
}
-
- if (output_syms != NULL)
- free (output_syms);
- return true;
- error_return:
- if (output_syms != NULL)
- free (output_syms);
- return false;
+ return NULL;
}
-/* Write out a symbol that was not associated with an a.out input
- object. */
+/* Relocate an a.out section using standard a.out relocs. */
-static boolean
-aout_link_write_other_symbol (h, data)
- struct aout_link_hash_entry *h;
- PTR data;
+static bfd_boolean
+aout_link_input_section_std (struct aout_final_link_info *flaginfo,
+ bfd *input_bfd,
+ asection *input_section,
+ struct reloc_std_external *relocs,
+ bfd_size_type rel_size,
+ bfd_byte *contents)
{
- struct aout_final_link_info *finfo = (struct aout_final_link_info *) data;
+ bfd_boolean (*check_dynamic_reloc)
+ (struct bfd_link_info *, bfd *, asection *,
+ struct aout_link_hash_entry *, void *, bfd_byte *, bfd_boolean *,
+ bfd_vma *);
bfd *output_bfd;
- int type;
- bfd_vma val;
- struct external_nlist outsym;
- bfd_size_type indx;
+ bfd_boolean relocatable;
+ struct external_nlist *syms;
+ char *strings;
+ struct aout_link_hash_entry **sym_hashes;
+ int *symbol_map;
+ bfd_size_type reloc_count;
+ struct reloc_std_external *rel;
+ struct reloc_std_external *rel_end;
- output_bfd = finfo->output_bfd;
+ output_bfd = flaginfo->output_bfd;
+ check_dynamic_reloc = aout_backend_info (output_bfd)->check_dynamic_reloc;
- if (aout_backend_info (output_bfd)->write_dynamic_symbol != NULL)
- {
- if (! ((*aout_backend_info (output_bfd)->write_dynamic_symbol)
- (output_bfd, finfo->info, h)))
- {
- /* FIXME: No way to handle errors. */
- abort ();
- }
- }
+ BFD_ASSERT (obj_reloc_entry_size (input_bfd) == RELOC_STD_SIZE);
+ BFD_ASSERT (input_bfd->xvec->header_byteorder
+ == output_bfd->xvec->header_byteorder);
- if (h->written)
- return true;
+ relocatable = bfd_link_relocatable (flaginfo->info);
+ syms = obj_aout_external_syms (input_bfd);
+ strings = obj_aout_external_strings (input_bfd);
+ sym_hashes = obj_aout_sym_hashes (input_bfd);
+ symbol_map = flaginfo->symbol_map;
- h->written = true;
+ reloc_count = rel_size / RELOC_STD_SIZE;
+ rel = relocs;
+ rel_end = rel + reloc_count;
+ for (; rel < rel_end; rel++)
+ {
+ bfd_vma r_addr;
+ int r_index;
+ int r_extern;
+ int r_pcrel;
+ int r_baserel = 0;
+ reloc_howto_type *howto;
+ struct aout_link_hash_entry *h = NULL;
+ bfd_vma relocation;
+ bfd_reloc_status_type r;
- if (finfo->info->strip == strip_all
- || (finfo->info->strip == strip_some
- && bfd_hash_lookup (finfo->info->keep_hash, h->root.root.string,
- false, false) == NULL))
- return true;
+ r_addr = GET_SWORD (input_bfd, rel->r_address);
- switch (h->root.type)
- {
- default:
- case bfd_link_hash_new:
- abort ();
- /* Avoid variable not initialized warnings. */
- return true;
- case bfd_link_hash_undefined:
- type = N_UNDF | N_EXT;
- val = 0;
- break;
- case bfd_link_hash_defined:
+#ifdef MY_reloc_howto
+ howto = MY_reloc_howto (input_bfd, rel, r_index, r_extern, r_pcrel);
+#else
{
- asection *sec;
+ int r_jmptable;
+ int r_relative;
+ int r_length;
+ unsigned int howto_idx;
- sec = h->root.u.def.section->output_section;
- BFD_ASSERT (bfd_is_abs_section (sec)
- || sec->owner == output_bfd);
- if (sec == obj_textsec (output_bfd))
- type = N_TEXT | N_EXT;
- else if (sec == obj_datasec (output_bfd))
- type = N_DATA | N_EXT;
- else if (sec == obj_bsssec (output_bfd))
- type = N_BSS | N_EXT;
+ if (bfd_header_big_endian (input_bfd))
+ {
+ r_index = (((unsigned int) rel->r_index[0] << 16)
+ | ((unsigned int) rel->r_index[1] << 8)
+ | rel->r_index[2]);
+ r_extern = (0 != (rel->r_type[0] & RELOC_STD_BITS_EXTERN_BIG));
+ r_pcrel = (0 != (rel->r_type[0] & RELOC_STD_BITS_PCREL_BIG));
+ r_baserel = (0 != (rel->r_type[0] & RELOC_STD_BITS_BASEREL_BIG));
+ r_jmptable= (0 != (rel->r_type[0] & RELOC_STD_BITS_JMPTABLE_BIG));
+ r_relative= (0 != (rel->r_type[0] & RELOC_STD_BITS_RELATIVE_BIG));
+ r_length = ((rel->r_type[0] & RELOC_STD_BITS_LENGTH_BIG)
+ >> RELOC_STD_BITS_LENGTH_SH_BIG);
+ }
else
- type = N_ABS | N_EXT;
- val = (h->root.u.def.value
- + sec->vma
- + h->root.u.def.section->output_offset);
+ {
+ r_index = (((unsigned int) rel->r_index[2] << 16)
+ | ((unsigned int) rel->r_index[1] << 8)
+ | rel->r_index[0]);
+ r_extern = (0 != (rel->r_type[0] & RELOC_STD_BITS_EXTERN_LITTLE));
+ r_pcrel = (0 != (rel->r_type[0] & RELOC_STD_BITS_PCREL_LITTLE));
+ r_baserel = (0 != (rel->r_type[0]
+ & RELOC_STD_BITS_BASEREL_LITTLE));
+ r_jmptable= (0 != (rel->r_type[0]
+ & RELOC_STD_BITS_JMPTABLE_LITTLE));
+ r_relative= (0 != (rel->r_type[0]
+ & RELOC_STD_BITS_RELATIVE_LITTLE));
+ r_length = ((rel->r_type[0] & RELOC_STD_BITS_LENGTH_LITTLE)
+ >> RELOC_STD_BITS_LENGTH_SH_LITTLE);
+ }
+
+ howto_idx = (r_length + 4 * r_pcrel + 8 * r_baserel
+ + 16 * r_jmptable + 32 * r_relative);
+ if (howto_idx < TABLE_SIZE (howto_table_std))
+ howto = howto_table_std + howto_idx;
+ else
+ howto = NULL;
}
- break;
- case bfd_link_hash_common:
- type = N_UNDF | N_EXT;
- val = h->root.u.c.size;
- break;
- case bfd_link_hash_weak:
- type = N_WEAKU;
- val = 0;
- case bfd_link_hash_indirect:
- case bfd_link_hash_warning:
- /* FIXME: Ignore these for now. The circumstances under which
- they should be written out are not clear to me. */
- return true;
- }
+#endif
- bfd_h_put_8 (output_bfd, type, outsym.e_type);
- bfd_h_put_8 (output_bfd, 0, outsym.e_other);
- bfd_h_put_16 (output_bfd, 0, outsym.e_desc);
- indx = add_to_stringtab (output_bfd, &finfo->strtab, h->root.root.string,
- false);
- if (indx == (bfd_size_type) -1)
- {
- /* FIXME: No way to handle errors. */
- abort ();
- }
- PUT_WORD (output_bfd, indx, outsym.e_strx);
- PUT_WORD (output_bfd, val, outsym.e_value);
+ if (howto == NULL)
+ {
+ _bfd_error_handler (_("%pB: unsupported relocation type"),
+ input_bfd);
+ bfd_set_error (bfd_error_bad_value);
+ return FALSE;
+ }
+
+ if (relocatable)
+ {
+ /* We are generating a relocatable output file, and must
+ modify the reloc accordingly. */
+ if (r_extern)
+ {
+ /* If we know the symbol this relocation is against,
+ convert it into a relocation against a section. This
+ is what the native linker does. */
+ h = sym_hashes[r_index];
+ if (h != NULL
+ && (h->root.type == bfd_link_hash_defined
+ || h->root.type == bfd_link_hash_defweak))
+ {
+ asection *output_section;
+
+ /* Change the r_extern value. */
+ if (bfd_header_big_endian (output_bfd))
+ rel->r_type[0] &=~ RELOC_STD_BITS_EXTERN_BIG;
+ else
+ rel->r_type[0] &=~ RELOC_STD_BITS_EXTERN_LITTLE;
+
+ /* Compute a new r_index. */
+ output_section = h->root.u.def.section->output_section;
+ if (output_section == obj_textsec (output_bfd))
+ r_index = N_TEXT;
+ else if (output_section == obj_datasec (output_bfd))
+ r_index = N_DATA;
+ else if (output_section == obj_bsssec (output_bfd))
+ r_index = N_BSS;
+ else
+ r_index = N_ABS;
+
+ /* Add the symbol value and the section VMA to the
+ addend stored in the contents. */
+ relocation = (h->root.u.def.value
+ + output_section->vma
+ + h->root.u.def.section->output_offset);
+ }
+ else
+ {
+ /* We must change r_index according to the symbol
+ map. */
+ r_index = symbol_map[r_index];
+
+ if (r_index == -1)
+ {
+ if (h != NULL)
+ {
+ /* We decided to strip this symbol, but it
+ turns out that we can't. Note that we
+ lose the other and desc information here.
+ I don't think that will ever matter for a
+ global symbol. */
+ if (h->indx < 0)
+ {
+ h->indx = -2;
+ h->written = FALSE;
+ if (!aout_link_write_other_symbol (&h->root.root,
+ flaginfo))
+ return FALSE;
+ }
+ r_index = h->indx;
+ }
+ else
+ {
+ const char *name;
+
+ name = strings + GET_WORD (input_bfd,
+ syms[r_index].e_strx);
+ (*flaginfo->info->callbacks->unattached_reloc)
+ (flaginfo->info, name,
+ input_bfd, input_section, r_addr);
+ r_index = 0;
+ }
+ }
+
+ relocation = 0;
+ }
+
+ /* Write out the new r_index value. */
+ if (bfd_header_big_endian (output_bfd))
+ {
+ rel->r_index[0] = r_index >> 16;
+ rel->r_index[1] = r_index >> 8;
+ rel->r_index[2] = r_index;
+ }
+ else
+ {
+ rel->r_index[2] = r_index >> 16;
+ rel->r_index[1] = r_index >> 8;
+ rel->r_index[0] = r_index;
+ }
+ }
+ else
+ {
+ asection *section;
+
+ /* This is a relocation against a section. We must
+ adjust by the amount that the section moved. */
+ section = aout_reloc_index_to_section (input_bfd, r_index);
+ relocation = (section->output_section->vma
+ + section->output_offset
+ - section->vma);
+ }
+
+ /* Change the address of the relocation. */
+ PUT_WORD (output_bfd,
+ r_addr + input_section->output_offset,
+ rel->r_address);
+
+ /* Adjust a PC relative relocation by removing the reference
+ to the original address in the section and including the
+ reference to the new address. */
+ if (r_pcrel)
+ relocation -= (input_section->output_section->vma
+ + input_section->output_offset
+ - input_section->vma);
- if (bfd_seek (output_bfd, finfo->symoff, SEEK_SET) != 0
- || bfd_write ((PTR) &outsym, (bfd_size_type) EXTERNAL_NLIST_SIZE,
- (bfd_size_type) 1, output_bfd) != EXTERNAL_NLIST_SIZE)
- {
- /* FIXME: No way to handle errors. */
- abort ();
- }
+#ifdef MY_relocatable_reloc
+ MY_relocatable_reloc (howto, output_bfd, rel, relocation, r_addr);
+#endif
- finfo->symoff += EXTERNAL_NLIST_SIZE;
- h->indx = obj_aout_external_sym_count (output_bfd);
- ++obj_aout_external_sym_count (output_bfd);
+ if (relocation == 0)
+ r = bfd_reloc_ok;
+ else
+ r = MY_relocate_contents (howto,
+ input_bfd, relocation,
+ contents + r_addr);
+ }
+ else
+ {
+ bfd_boolean hundef;
- return true;
-}
+ /* We are generating an executable, and must do a full
+ relocation. */
+ hundef = FALSE;
-/* Link an a.out section into the output file. */
+ if (r_extern)
+ {
+ h = sym_hashes[r_index];
-static boolean
-aout_link_input_section (finfo, input_bfd, input_section, reloff_ptr,
- rel_size, symbol_map)
- struct aout_final_link_info *finfo;
- bfd *input_bfd;
- asection *input_section;
- file_ptr *reloff_ptr;
- bfd_size_type rel_size;
- int *symbol_map;
-{
- bfd_size_type input_size;
- bfd_byte *contents = NULL;
- PTR relocs;
- PTR free_relocs = NULL;
+ if (h != NULL
+ && (h->root.type == bfd_link_hash_defined
+ || h->root.type == bfd_link_hash_defweak))
+ {
+ relocation = (h->root.u.def.value
+ + h->root.u.def.section->output_section->vma
+ + h->root.u.def.section->output_offset);
+ }
+ else if (h != NULL
+ && h->root.type == bfd_link_hash_undefweak)
+ relocation = 0;
+ else
+ {
+ hundef = TRUE;
+ relocation = 0;
+ }
+ }
+ else
+ {
+ asection *section;
- /* Get the section contents. */
- input_size = bfd_section_size (input_bfd, input_section);
- contents = (bfd_byte *) malloc (input_size);
- if (contents == NULL && input_size != 0)
- {
- bfd_set_error (bfd_error_no_memory);
- goto error_return;
- }
- if (! bfd_get_section_contents (input_bfd, input_section, (PTR) contents,
- (file_ptr) 0, input_size))
- goto error_return;
+ section = aout_reloc_index_to_section (input_bfd, r_index);
+ relocation = (section->output_section->vma
+ + section->output_offset
+ - section->vma);
+ if (r_pcrel)
+ relocation += input_section->vma;
+ }
- /* Read in the relocs if we haven't already done it. */
- if (aout_section_data (input_section) != NULL
- && aout_section_data (input_section)->relocs != NULL)
- relocs = aout_section_data (input_section)->relocs;
- else
- {
- relocs = free_relocs = (PTR) malloc (rel_size);
- if (relocs == NULL && rel_size != 0)
- {
- bfd_set_error (bfd_error_no_memory);
- goto error_return;
- }
- if (bfd_seek (input_bfd, input_section->rel_filepos, SEEK_SET) != 0
- || bfd_read (relocs, 1, rel_size, input_bfd) != rel_size)
- goto error_return;
- }
+ if (check_dynamic_reloc != NULL)
+ {
+ bfd_boolean skip;
- /* Relocate the section contents. */
- if (obj_reloc_entry_size (input_bfd) == RELOC_STD_SIZE)
- {
- if (! aout_link_input_section_std (finfo, input_bfd, input_section,
- (struct reloc_std_external *) relocs,
- rel_size, contents, symbol_map))
- goto error_return;
- }
- else
- {
- if (! aout_link_input_section_ext (finfo, input_bfd, input_section,
- (struct reloc_ext_external *) relocs,
- rel_size, contents, symbol_map))
- goto error_return;
- }
+ if (! ((*check_dynamic_reloc)
+ (flaginfo->info, input_bfd, input_section, h,
+ (void *) rel, contents, &skip, &relocation)))
+ return FALSE;
+ if (skip)
+ continue;
+ }
- /* Write out the section contents. */
- if (! bfd_set_section_contents (finfo->output_bfd,
- input_section->output_section,
- (PTR) contents,
- input_section->output_offset,
- input_size))
- goto error_return;
+ /* Now warn if a global symbol is undefined. We could not
+ do this earlier, because check_dynamic_reloc might want
+ to skip this reloc. */
+ if (hundef && ! bfd_link_pic (flaginfo->info) && ! r_baserel)
+ {
+ const char *name;
- /* If we are producing relocateable output, the relocs were
- modified, and we now write them out. */
- if (finfo->info->relocateable)
- {
- if (bfd_seek (finfo->output_bfd, *reloff_ptr, SEEK_SET) != 0)
- goto error_return;
- if (bfd_write (relocs, (bfd_size_type) 1, rel_size, finfo->output_bfd)
- != rel_size)
- goto error_return;
- *reloff_ptr += rel_size;
+ if (h != NULL)
+ name = h->root.root.string;
+ else
+ name = strings + GET_WORD (input_bfd, syms[r_index].e_strx);
+ (*flaginfo->info->callbacks->undefined_symbol)
+ (flaginfo->info, name, input_bfd, input_section, r_addr, TRUE);
+ }
- /* Assert that the relocs have not run into the symbols, and
- that if these are the text relocs they have not run into the
- data relocs. */
- BFD_ASSERT (*reloff_ptr <= obj_sym_filepos (finfo->output_bfd)
- && (reloff_ptr != &finfo->treloff
- || (*reloff_ptr
- <= obj_datasec (finfo->output_bfd)->rel_filepos)));
- }
+ r = MY_final_link_relocate (howto,
+ input_bfd, input_section,
+ contents, r_addr, relocation,
+ (bfd_vma) 0);
+ }
- if (free_relocs != NULL)
- free (free_relocs);
- if (contents != NULL)
- free (contents);
- return true;
- error_return:
- if (free_relocs != NULL)
- free (free_relocs);
- if (contents != NULL)
- free (contents);
- return false;
-}
+ if (r != bfd_reloc_ok)
+ {
+ switch (r)
+ {
+ default:
+ case bfd_reloc_outofrange:
+ abort ();
+ case bfd_reloc_overflow:
+ {
+ const char *name;
-/* Get the section corresponding to a reloc index. */
+ if (h != NULL)
+ name = NULL;
+ else if (r_extern)
+ name = strings + GET_WORD (input_bfd,
+ syms[r_index].e_strx);
+ else
+ {
+ asection *s;
-static INLINE asection *
-aout_reloc_index_to_section (abfd, indx)
- bfd *abfd;
- int indx;
-{
- switch (indx & N_TYPE)
- {
- case N_TEXT:
- return obj_textsec (abfd);
- case N_DATA:
- return obj_datasec (abfd);
- case N_BSS:
- return obj_bsssec (abfd);
- case N_ABS:
- case N_UNDF:
- return bfd_abs_section_ptr;
- default:
- abort ();
+ s = aout_reloc_index_to_section (input_bfd, r_index);
+ name = bfd_section_name (input_bfd, s);
+ }
+ (*flaginfo->info->callbacks->reloc_overflow)
+ (flaginfo->info, (h ? &h->root : NULL), name, howto->name,
+ (bfd_vma) 0, input_bfd, input_section, r_addr);
+ }
+ break;
+ }
+ }
}
+
+ return TRUE;
}
-/* Relocate an a.out section using standard a.out relocs. */
+/* Relocate an a.out section using extended a.out relocs. */
-static boolean
-aout_link_input_section_std (finfo, input_bfd, input_section, relocs,
- rel_size, contents, symbol_map)
- struct aout_final_link_info *finfo;
- bfd *input_bfd;
- asection *input_section;
- struct reloc_std_external *relocs;
- bfd_size_type rel_size;
- bfd_byte *contents;
- int *symbol_map;
+static bfd_boolean
+aout_link_input_section_ext (struct aout_final_link_info *flaginfo,
+ bfd *input_bfd,
+ asection *input_section,
+ struct reloc_ext_external *relocs,
+ bfd_size_type rel_size,
+ bfd_byte *contents)
{
- boolean (*check_dynamic_reloc) PARAMS ((struct bfd_link_info *,
- bfd *, asection *,
- struct aout_link_hash_entry *,
- PTR, boolean *));
+ bfd_boolean (*check_dynamic_reloc)
+ (struct bfd_link_info *, bfd *, asection *,
+ struct aout_link_hash_entry *, void *, bfd_byte *, bfd_boolean *,
+ bfd_vma *);
bfd *output_bfd;
- boolean relocateable;
+ bfd_boolean relocatable;
struct external_nlist *syms;
char *strings;
struct aout_link_hash_entry **sym_hashes;
+ int *symbol_map;
bfd_size_type reloc_count;
- register struct reloc_std_external *rel;
- struct reloc_std_external *rel_end;
+ struct reloc_ext_external *rel;
+ struct reloc_ext_external *rel_end;
- output_bfd = finfo->output_bfd;
+ output_bfd = flaginfo->output_bfd;
check_dynamic_reloc = aout_backend_info (output_bfd)->check_dynamic_reloc;
- BFD_ASSERT (obj_reloc_entry_size (input_bfd) == RELOC_STD_SIZE);
- BFD_ASSERT (input_bfd->xvec->header_byteorder_big_p
- == output_bfd->xvec->header_byteorder_big_p);
+ BFD_ASSERT (obj_reloc_entry_size (input_bfd) == RELOC_EXT_SIZE);
+ BFD_ASSERT (input_bfd->xvec->header_byteorder
+ == output_bfd->xvec->header_byteorder);
- relocateable = finfo->info->relocateable;
+ relocatable = bfd_link_relocatable (flaginfo->info);
syms = obj_aout_external_syms (input_bfd);
strings = obj_aout_external_strings (input_bfd);
sym_hashes = obj_aout_sym_hashes (input_bfd);
+ symbol_map = flaginfo->symbol_map;
- reloc_count = rel_size / RELOC_STD_SIZE;
+ reloc_count = rel_size / RELOC_EXT_SIZE;
rel = relocs;
rel_end = rel + reloc_count;
for (; rel < rel_end; rel++)
bfd_vma r_addr;
int r_index;
int r_extern;
- int r_pcrel;
- int r_baserel;
- int r_jmptable;
- int r_relative;
- int r_length;
- int howto_idx;
- reloc_howto_type *howto;
+ unsigned int r_type;
+ bfd_vma r_addend;
+ struct aout_link_hash_entry *h = NULL;
+ asection *r_section = NULL;
bfd_vma relocation;
- bfd_reloc_status_type r;
r_addr = GET_SWORD (input_bfd, rel->r_address);
-#ifdef MY_reloc_howto
- howto = MY_reloc_howto(input_bfd, rel, r_index, r_extern, r_pcrel);
-#else
- if (input_bfd->xvec->header_byteorder_big_p)
+ if (bfd_header_big_endian (input_bfd))
{
- r_index = ((rel->r_index[0] << 16)
- | (rel->r_index[1] << 8)
- | rel->r_index[2]);
- r_extern = (0 != (rel->r_type[0] & RELOC_STD_BITS_EXTERN_BIG));
- r_pcrel = (0 != (rel->r_type[0] & RELOC_STD_BITS_PCREL_BIG));
- r_baserel = (0 != (rel->r_type[0] & RELOC_STD_BITS_BASEREL_BIG));
- r_jmptable= (0 != (rel->r_type[0] & RELOC_STD_BITS_JMPTABLE_BIG));
- r_relative= (0 != (rel->r_type[0] & RELOC_STD_BITS_RELATIVE_BIG));
- r_length = ((rel->r_type[0] & RELOC_STD_BITS_LENGTH_BIG)
- >> RELOC_STD_BITS_LENGTH_SH_BIG);
+ r_index = (((unsigned int) rel->r_index[0] << 16)
+ | ((unsigned int) rel->r_index[1] << 8)
+ | rel->r_index[2]);
+ r_extern = (0 != (rel->r_type[0] & RELOC_EXT_BITS_EXTERN_BIG));
+ r_type = ((rel->r_type[0] & RELOC_EXT_BITS_TYPE_BIG)
+ >> RELOC_EXT_BITS_TYPE_SH_BIG);
}
else
{
- r_index = ((rel->r_index[2] << 16)
- | (rel->r_index[1] << 8)
- | rel->r_index[0]);
- r_extern = (0 != (rel->r_type[0] & RELOC_STD_BITS_EXTERN_LITTLE));
- r_pcrel = (0 != (rel->r_type[0] & RELOC_STD_BITS_PCREL_LITTLE));
- r_baserel = (0 != (rel->r_type[0] & RELOC_STD_BITS_BASEREL_LITTLE));
- r_jmptable= (0 != (rel->r_type[0] & RELOC_STD_BITS_JMPTABLE_LITTLE));
- r_relative= (0 != (rel->r_type[0] & RELOC_STD_BITS_RELATIVE_LITTLE));
- r_length = ((rel->r_type[0] & RELOC_STD_BITS_LENGTH_LITTLE)
- >> RELOC_STD_BITS_LENGTH_SH_LITTLE);
+ r_index = (((unsigned int) rel->r_index[2] << 16)
+ | ((unsigned int) rel->r_index[1] << 8)
+ | rel->r_index[0]);
+ r_extern = (0 != (rel->r_type[0] & RELOC_EXT_BITS_EXTERN_LITTLE));
+ r_type = ((rel->r_type[0] & RELOC_EXT_BITS_TYPE_LITTLE)
+ >> RELOC_EXT_BITS_TYPE_SH_LITTLE);
}
- howto_idx = r_length + 4 * r_pcrel + 8 * r_baserel
- + 16 * r_jmptable + 32 * r_relative;
- BFD_ASSERT (howto_idx < TABLE_SIZE (howto_table_std));
- howto = howto_table_std + howto_idx;
-#endif
+ r_addend = GET_SWORD (input_bfd, rel->r_addend);
- if (relocateable)
+ if (r_type >= TABLE_SIZE (howto_table_ext))
{
- /* We are generating a relocateable output file, and must
+ _bfd_error_handler (_("%pB: unsupported relocation type %#x"),
+ input_bfd, r_type);
+ bfd_set_error (bfd_error_bad_value);
+ return FALSE;
+ }
+
+ if (relocatable)
+ {
+ /* We are generating a relocatable output file, and must
modify the reloc accordingly. */
- if (r_extern)
+ if (r_extern
+ || r_type == (unsigned int) RELOC_BASE10
+ || r_type == (unsigned int) RELOC_BASE13
+ || r_type == (unsigned int) RELOC_BASE22)
{
- struct aout_link_hash_entry *h;
-
/* If we know the symbol this relocation is against,
convert it into a relocation against a section. This
is what the native linker does. */
- h = sym_hashes[r_index];
- if (h != (struct aout_link_hash_entry *) NULL
- && h->root.type == bfd_link_hash_defined)
+ if (r_type == (unsigned int) RELOC_BASE10
+ || r_type == (unsigned int) RELOC_BASE13
+ || r_type == (unsigned int) RELOC_BASE22)
+ h = NULL;
+ else
+ h = sym_hashes[r_index];
+ if (h != NULL
+ && (h->root.type == bfd_link_hash_defined
+ || h->root.type == bfd_link_hash_defweak))
{
asection *output_section;
/* Change the r_extern value. */
- if (output_bfd->xvec->header_byteorder_big_p)
- rel->r_type[0] &=~ RELOC_STD_BITS_EXTERN_BIG;
+ if (bfd_header_big_endian (output_bfd))
+ rel->r_type[0] &=~ RELOC_EXT_BITS_EXTERN_BIG;
else
- rel->r_type[0] &=~ RELOC_STD_BITS_EXTERN_LITTLE;
+ rel->r_type[0] &=~ RELOC_EXT_BITS_EXTERN_LITTLE;
/* Compute a new r_index. */
output_section = h->root.u.def.section->output_section;
r_index = N_ABS;
/* Add the symbol value and the section VMA to the
- addend stored in the contents. */
+ addend. */
relocation = (h->root.u.def.value
+ output_section->vma
+ h->root.u.def.section->output_offset);
+
+ /* Now RELOCATION is the VMA of the final
+ destination. If this is a PC relative reloc,
+ then ADDEND is the negative of the source VMA.
+ We want to set ADDEND to the difference between
+ the destination VMA and the source VMA, which
+ means we must adjust RELOCATION by the change in
+ the source VMA. This is done below. */
}
else
{
if (r_index == -1)
{
- const char *name;
-
- name = strings + GET_WORD (input_bfd,
- syms[r_index].e_strx);
- if (! ((*finfo->info->callbacks->unattached_reloc)
- (finfo->info, name, input_bfd, input_section,
- r_addr)))
- return false;
- r_index = 0;
+ if (h != NULL)
+ {
+ /* We decided to strip this symbol, but it
+ turns out that we can't. Note that we
+ lose the other and desc information here.
+ I don't think that will ever matter for a
+ global symbol. */
+ if (h->indx < 0)
+ {
+ h->indx = -2;
+ h->written = FALSE;
+ if (!aout_link_write_other_symbol (&h->root.root,
+ flaginfo))
+ return FALSE;
+ }
+ r_index = h->indx;
+ }
+ else
+ {
+ const char *name;
+
+ name = strings + GET_WORD (input_bfd,
+ syms[r_index].e_strx);
+ (*flaginfo->info->callbacks->unattached_reloc)
+ (flaginfo->info, name,
+ input_bfd, input_section, r_addr);
+ r_index = 0;
+ }
}
relocation = 0;
+
+ /* If this is a PC relative reloc, then the addend
+ is the negative of the source VMA. We must
+ adjust it by the change in the source VMA. This
+ is done below. */
}
/* Write out the new r_index value. */
- if (output_bfd->xvec->header_byteorder_big_p)
+ if (bfd_header_big_endian (output_bfd))
{
rel->r_index[0] = r_index >> 16;
rel->r_index[1] = r_index >> 8;
}
else
{
- asection *section;
-
/* This is a relocation against a section. We must
adjust by the amount that the section moved. */
- section = aout_reloc_index_to_section (input_bfd, r_index);
- relocation = (section->output_section->vma
- + section->output_offset
- - section->vma);
- }
+ r_section = aout_reloc_index_to_section (input_bfd, r_index);
+ relocation = (r_section->output_section->vma
+ + r_section->output_offset
+ - r_section->vma);
- /* Change the address of the relocation. */
- PUT_WORD (output_bfd,
- r_addr + input_section->output_offset,
- rel->r_address);
+ /* If this is a PC relative reloc, then the addend is
+ the difference in VMA between the destination and the
+ source. We have just adjusted for the change in VMA
+ of the destination, so we must also adjust by the
+ change in VMA of the source. This is done below. */
+ }
- /* Adjust a PC relative relocation by removing the reference
- to the original address in the section and including the
- reference to the new address. */
- if (r_pcrel)
+ /* As described above, we must always adjust a PC relative
+ reloc by the change in VMA of the source. However, if
+ pcrel_offset is set, then the addend does not include the
+ location within the section, in which case we don't need
+ to adjust anything. */
+ if (howto_table_ext[r_type].pc_relative
+ && ! howto_table_ext[r_type].pcrel_offset)
relocation -= (input_section->output_section->vma
+ input_section->output_offset
- input_section->vma);
- if (relocation == 0)
- r = bfd_reloc_ok;
- else
- r = _bfd_relocate_contents (howto,
- input_bfd, relocation,
- contents + r_addr);
+ /* Change the addend if necessary. */
+ if (relocation != 0)
+ PUT_WORD (output_bfd, r_addend + relocation, rel->r_addend);
+
+ /* Change the address of the relocation. */
+ PUT_WORD (output_bfd,
+ r_addr + input_section->output_offset,
+ rel->r_address);
}
else
{
+ bfd_boolean hundef;
+ bfd_reloc_status_type r;
+
/* We are generating an executable, and must do a full
relocation. */
+ hundef = FALSE;
+
if (r_extern)
{
- struct aout_link_hash_entry *h;
-
h = sym_hashes[r_index];
- if (check_dynamic_reloc != NULL)
- {
- boolean skip;
-
- if (! ((*check_dynamic_reloc)
- (finfo->info, input_bfd, input_section, h,
- (PTR) rel, &skip)))
- return false;
- if (skip)
- continue;
- }
-
- if (h != (struct aout_link_hash_entry *) NULL
- && h->root.type == bfd_link_hash_defined)
+ if (h != NULL
+ && (h->root.type == bfd_link_hash_defined
+ || h->root.type == bfd_link_hash_defweak))
{
relocation = (h->root.u.def.value
+ h->root.u.def.section->output_section->vma
+ h->root.u.def.section->output_offset);
}
- else if (h != (struct aout_link_hash_entry *) NULL
- && h->root.type == bfd_link_hash_weak)
+ else if (h != NULL
+ && h->root.type == bfd_link_hash_undefweak)
relocation = 0;
else
{
- const char *name;
+ hundef = TRUE;
+ relocation = 0;
+ }
+ }
+ else if (r_type == (unsigned int) RELOC_BASE10
+ || r_type == (unsigned int) RELOC_BASE13
+ || r_type == (unsigned int) RELOC_BASE22)
+ {
+ struct external_nlist *sym;
+ int type;
+
+ /* For base relative relocs, r_index is always an index
+ into the symbol table, even if r_extern is 0. */
+ sym = syms + r_index;
+ type = H_GET_8 (input_bfd, sym->e_type);
+ if ((type & N_TYPE) == N_TEXT
+ || type == N_WEAKT)
+ r_section = obj_textsec (input_bfd);
+ else if ((type & N_TYPE) == N_DATA
+ || type == N_WEAKD)
+ r_section = obj_datasec (input_bfd);
+ else if ((type & N_TYPE) == N_BSS
+ || type == N_WEAKB)
+ r_section = obj_bsssec (input_bfd);
+ else if ((type & N_TYPE) == N_ABS
+ || type == N_WEAKA)
+ r_section = bfd_abs_section_ptr;
+ else
+ abort ();
+ relocation = (r_section->output_section->vma
+ + r_section->output_offset
+ + (GET_WORD (input_bfd, sym->e_value)
+ - r_section->vma));
+ }
+ else
+ {
+ r_section = aout_reloc_index_to_section (input_bfd, r_index);
+
+ /* If this is a PC relative reloc, then R_ADDEND is the
+ difference between the two vmas, or
+ old_dest_sec + old_dest_off - (old_src_sec + old_src_off)
+ where
+ old_dest_sec == section->vma
+ and
+ old_src_sec == input_section->vma
+ and
+ old_src_off == r_addr
+
+ _bfd_final_link_relocate expects RELOCATION +
+ R_ADDEND to be the VMA of the destination minus
+ r_addr (the minus r_addr is because this relocation
+ is not pcrel_offset, which is a bit confusing and
+ should, perhaps, be changed), or
+ new_dest_sec
+ where
+ new_dest_sec == output_section->vma + output_offset
+ We arrange for this to happen by setting RELOCATION to
+ new_dest_sec + old_src_sec - old_dest_sec
+
+ If this is not a PC relative reloc, then R_ADDEND is
+ simply the VMA of the destination, so we set
+ RELOCATION to the change in the destination VMA, or
+ new_dest_sec - old_dest_sec
+ */
+ relocation = (r_section->output_section->vma
+ + r_section->output_offset
+ - r_section->vma);
+ if (howto_table_ext[r_type].pc_relative)
+ relocation += input_section->vma;
+ }
- name = strings + GET_WORD (input_bfd, syms[r_index].e_strx);
- if (! ((*finfo->info->callbacks->undefined_symbol)
- (finfo->info, name, input_bfd, input_section,
- r_addr)))
- return false;
- relocation = 0;
- }
+ if (check_dynamic_reloc != NULL)
+ {
+ bfd_boolean skip;
+
+ if (! ((*check_dynamic_reloc)
+ (flaginfo->info, input_bfd, input_section, h,
+ (void *) rel, contents, &skip, &relocation)))
+ return FALSE;
+ if (skip)
+ continue;
}
- else
+
+ /* Now warn if a global symbol is undefined. We could not
+ do this earlier, because check_dynamic_reloc might want
+ to skip this reloc. */
+ if (hundef
+ && ! bfd_link_pic (flaginfo->info)
+ && r_type != (unsigned int) RELOC_BASE10
+ && r_type != (unsigned int) RELOC_BASE13
+ && r_type != (unsigned int) RELOC_BASE22)
{
- asection *section;
+ const char *name;
- section = aout_reloc_index_to_section (input_bfd, r_index);
- relocation = (section->output_section->vma
- + section->output_offset
- - section->vma);
- if (r_pcrel)
- relocation += input_section->vma;
+ if (h != NULL)
+ name = h->root.root.string;
+ else
+ name = strings + GET_WORD (input_bfd, syms[r_index].e_strx);
+ (*flaginfo->info->callbacks->undefined_symbol)
+ (flaginfo->info, name, input_bfd, input_section, r_addr, TRUE);
}
- r = _bfd_final_link_relocate (howto,
+ if (r_type != (unsigned int) RELOC_SPARC_REV32)
+ r = MY_final_link_relocate (howto_table_ext + r_type,
input_bfd, input_section,
contents, r_addr, relocation,
- (bfd_vma) 0);
- }
-
- if (r != bfd_reloc_ok)
- {
- switch (r)
+ r_addend);
+ else
{
- default:
- case bfd_reloc_outofrange:
- abort ();
- case bfd_reloc_overflow:
- {
- const char *name;
+ bfd_vma x;
- if (r_extern)
- name = strings + GET_WORD (input_bfd,
- syms[r_index].e_strx);
- else
+ x = bfd_get_32 (input_bfd, contents + r_addr);
+ x = x + relocation + r_addend;
+ bfd_putl32 (/*input_bfd,*/ x, contents + r_addr);
+ r = bfd_reloc_ok;
+ }
+
+ if (r != bfd_reloc_ok)
+ {
+ switch (r)
+ {
+ default:
+ case bfd_reloc_outofrange:
+ abort ();
+ case bfd_reloc_overflow:
{
- asection *s;
+ const char *name;
- s = aout_reloc_index_to_section (input_bfd, r_index);
- name = bfd_section_name (input_bfd, s);
+ if (h != NULL)
+ name = NULL;
+ else if (r_extern
+ || r_type == (unsigned int) RELOC_BASE10
+ || r_type == (unsigned int) RELOC_BASE13
+ || r_type == (unsigned int) RELOC_BASE22)
+ name = strings + GET_WORD (input_bfd,
+ syms[r_index].e_strx);
+ else
+ {
+ asection *s;
+
+ s = aout_reloc_index_to_section (input_bfd, r_index);
+ name = bfd_section_name (input_bfd, s);
+ }
+ (*flaginfo->info->callbacks->reloc_overflow)
+ (flaginfo->info, (h ? &h->root : NULL), name,
+ howto_table_ext[r_type].name,
+ r_addend, input_bfd, input_section, r_addr);
}
- if (! ((*finfo->info->callbacks->reloc_overflow)
- (finfo->info, name, howto->name,
- (bfd_vma) 0, input_bfd, input_section, r_addr)))
- return false;
- }
- break;
+ break;
+ }
}
}
}
- return true;
+ return TRUE;
}
-/* Relocate an a.out section using extended a.out relocs. */
+/* Link an a.out section into the output file. */
-static boolean
-aout_link_input_section_ext (finfo, input_bfd, input_section, relocs,
- rel_size, contents, symbol_map)
- struct aout_final_link_info *finfo;
- bfd *input_bfd;
- asection *input_section;
- struct reloc_ext_external *relocs;
- bfd_size_type rel_size;
- bfd_byte *contents;
- int *symbol_map;
+static bfd_boolean
+aout_link_input_section (struct aout_final_link_info *flaginfo,
+ bfd *input_bfd,
+ asection *input_section,
+ file_ptr *reloff_ptr,
+ bfd_size_type rel_size)
{
- boolean (*check_dynamic_reloc) PARAMS ((struct bfd_link_info *,
- bfd *, asection *,
- struct aout_link_hash_entry *,
- PTR, boolean *));
- bfd *output_bfd;
- boolean relocateable;
- struct external_nlist *syms;
- char *strings;
- struct aout_link_hash_entry **sym_hashes;
- bfd_size_type reloc_count;
- register struct reloc_ext_external *rel;
- struct reloc_ext_external *rel_end;
+ bfd_size_type input_size;
+ void * relocs;
- output_bfd = finfo->output_bfd;
- check_dynamic_reloc = aout_backend_info (output_bfd)->check_dynamic_reloc;
+ /* Get the section contents. */
+ input_size = input_section->size;
+ if (! bfd_get_section_contents (input_bfd, input_section,
+ (void *) flaginfo->contents,
+ (file_ptr) 0, input_size))
+ return FALSE;
- BFD_ASSERT (obj_reloc_entry_size (input_bfd) == RELOC_EXT_SIZE);
- BFD_ASSERT (input_bfd->xvec->header_byteorder_big_p
- == output_bfd->xvec->header_byteorder_big_p);
+ /* Read in the relocs if we haven't already done it. */
+ if (aout_section_data (input_section) != NULL
+ && aout_section_data (input_section)->relocs != NULL)
+ relocs = aout_section_data (input_section)->relocs;
+ else
+ {
+ relocs = flaginfo->relocs;
+ if (rel_size > 0)
+ {
+ if (bfd_seek (input_bfd, input_section->rel_filepos, SEEK_SET) != 0
+ || bfd_bread (relocs, rel_size, input_bfd) != rel_size)
+ return FALSE;
+ }
+ }
- relocateable = finfo->info->relocateable;
- syms = obj_aout_external_syms (input_bfd);
+ /* Relocate the section contents. */
+ if (obj_reloc_entry_size (input_bfd) == RELOC_STD_SIZE)
+ {
+ if (! aout_link_input_section_std (flaginfo, input_bfd, input_section,
+ (struct reloc_std_external *) relocs,
+ rel_size, flaginfo->contents))
+ return FALSE;
+ }
+ else
+ {
+ if (! aout_link_input_section_ext (flaginfo, input_bfd, input_section,
+ (struct reloc_ext_external *) relocs,
+ rel_size, flaginfo->contents))
+ return FALSE;
+ }
+
+ /* Write out the section contents. */
+ if (! bfd_set_section_contents (flaginfo->output_bfd,
+ input_section->output_section,
+ (void *) flaginfo->contents,
+ (file_ptr) input_section->output_offset,
+ input_size))
+ return FALSE;
+
+ /* If we are producing relocatable output, the relocs were
+ modified, and we now write them out. */
+ if (bfd_link_relocatable (flaginfo->info) && rel_size > 0)
+ {
+ if (bfd_seek (flaginfo->output_bfd, *reloff_ptr, SEEK_SET) != 0)
+ return FALSE;
+ if (bfd_bwrite (relocs, rel_size, flaginfo->output_bfd) != rel_size)
+ return FALSE;
+ *reloff_ptr += rel_size;
+
+ /* Assert that the relocs have not run into the symbols, and
+ that if these are the text relocs they have not run into the
+ data relocs. */
+ BFD_ASSERT (*reloff_ptr <= obj_sym_filepos (flaginfo->output_bfd)
+ && (reloff_ptr != &flaginfo->treloff
+ || (*reloff_ptr
+ <= obj_datasec (flaginfo->output_bfd)->rel_filepos)));
+ }
+
+ return TRUE;
+}
+
+/* Adjust and write out the symbols for an a.out file. Set the new
+ symbol indices into a symbol_map. */
+
+static bfd_boolean
+aout_link_write_symbols (struct aout_final_link_info *flaginfo, bfd *input_bfd)
+{
+ bfd *output_bfd;
+ bfd_size_type sym_count;
+ char *strings;
+ enum bfd_link_strip strip;
+ enum bfd_link_discard discard;
+ struct external_nlist *outsym;
+ bfd_size_type strtab_index;
+ struct external_nlist *sym;
+ struct external_nlist *sym_end;
+ struct aout_link_hash_entry **sym_hash;
+ int *symbol_map;
+ bfd_boolean pass;
+ bfd_boolean skip_next;
+
+ output_bfd = flaginfo->output_bfd;
+ sym_count = obj_aout_external_sym_count (input_bfd);
strings = obj_aout_external_strings (input_bfd);
- sym_hashes = obj_aout_sym_hashes (input_bfd);
+ strip = flaginfo->info->strip;
+ discard = flaginfo->info->discard;
+ outsym = flaginfo->output_syms;
- reloc_count = rel_size / RELOC_EXT_SIZE;
- rel = relocs;
- rel_end = rel + reloc_count;
- for (; rel < rel_end; rel++)
+ /* First write out a symbol for this object file, unless we are
+ discarding such symbols. */
+ if (strip != strip_all
+ && (strip != strip_some
+ || bfd_hash_lookup (flaginfo->info->keep_hash, input_bfd->filename,
+ FALSE, FALSE) != NULL)
+ && discard != discard_all)
{
- bfd_vma r_addr;
- int r_index;
- int r_extern;
- int r_type;
- bfd_vma r_addend;
- bfd_vma relocation;
+ H_PUT_8 (output_bfd, N_TEXT, outsym->e_type);
+ H_PUT_8 (output_bfd, 0, outsym->e_other);
+ H_PUT_16 (output_bfd, 0, outsym->e_desc);
+ strtab_index = add_to_stringtab (output_bfd, flaginfo->strtab,
+ input_bfd->filename, FALSE);
+ if (strtab_index == (bfd_size_type) -1)
+ return FALSE;
+ PUT_WORD (output_bfd, strtab_index, outsym->e_strx);
+ PUT_WORD (output_bfd,
+ (bfd_get_section_vma (output_bfd,
+ obj_textsec (input_bfd)->output_section)
+ + obj_textsec (input_bfd)->output_offset),
+ outsym->e_value);
+ ++obj_aout_external_sym_count (output_bfd);
+ ++outsym;
+ }
- r_addr = GET_SWORD (input_bfd, rel->r_address);
+ pass = FALSE;
+ skip_next = FALSE;
+ sym = obj_aout_external_syms (input_bfd);
+ sym_end = sym + sym_count;
+ sym_hash = obj_aout_sym_hashes (input_bfd);
+ symbol_map = flaginfo->symbol_map;
+ memset (symbol_map, 0, (size_t) sym_count * sizeof *symbol_map);
+ for (; sym < sym_end; sym++, sym_hash++, symbol_map++)
+ {
+ const char *name;
+ int type;
+ struct aout_link_hash_entry *h;
+ bfd_boolean skip;
+ asection *symsec;
+ bfd_vma val = 0;
+ bfd_boolean copy;
+
+ /* We set *symbol_map to 0 above for all symbols. If it has
+ already been set to -1 for this symbol, it means that we are
+ discarding it because it appears in a duplicate header file.
+ See the N_BINCL code below. */
+ if (*symbol_map == -1)
+ continue;
+
+ /* Initialize *symbol_map to -1, which means that the symbol was
+ not copied into the output file. We will change it later if
+ we do copy the symbol over. */
+ *symbol_map = -1;
+
+ type = H_GET_8 (input_bfd, sym->e_type);
+ name = strings + GET_WORD (input_bfd, sym->e_strx);
+
+ h = NULL;
- if (input_bfd->xvec->header_byteorder_big_p)
+ if (pass)
{
- r_index = ((rel->r_index[0] << 16)
- | (rel->r_index[1] << 8)
- | rel->r_index[2]);
- r_extern = (0 != (rel->r_type[0] & RELOC_EXT_BITS_EXTERN_BIG));
- r_type = ((rel->r_type[0] & RELOC_EXT_BITS_TYPE_BIG)
- >> RELOC_EXT_BITS_TYPE_SH_BIG);
+ /* Pass this symbol through. It is the target of an
+ indirect or warning symbol. */
+ val = GET_WORD (input_bfd, sym->e_value);
+ pass = FALSE;
}
- else
+ else if (skip_next)
{
- r_index = ((rel->r_index[2] << 16)
- | (rel->r_index[1] << 8)
- | rel->r_index[0]);
- r_extern = (0 != (rel->r_type[0] & RELOC_EXT_BITS_EXTERN_LITTLE));
- r_type = ((rel->r_type[0] & RELOC_EXT_BITS_TYPE_LITTLE)
- >> RELOC_EXT_BITS_TYPE_SH_LITTLE);
+ /* Skip this symbol, which is the target of an indirect
+ symbol that we have changed to no longer be an indirect
+ symbol. */
+ skip_next = FALSE;
+ continue;
}
+ else
+ {
+ struct aout_link_hash_entry *hresolve;
- r_addend = GET_SWORD (input_bfd, rel->r_addend);
+ /* We have saved the hash table entry for this symbol, if
+ there is one. Note that we could just look it up again
+ in the hash table, provided we first check that it is an
+ external symbol. */
+ h = *sym_hash;
- BFD_ASSERT (r_type >= 0
- && r_type < TABLE_SIZE (howto_table_ext));
+ /* Use the name from the hash table, in case the symbol was
+ wrapped. */
+ if (h != NULL
+ && h->root.type != bfd_link_hash_warning)
+ name = h->root.root.string;
- if (relocateable)
- {
- /* We are generating a relocateable output file, and must
- modify the reloc accordingly. */
- if (r_extern)
+ /* If this is an indirect or warning symbol, then change
+ hresolve to the base symbol. We also change *sym_hash so
+ that the relocation routines relocate against the real
+ symbol. */
+ hresolve = h;
+ if (h != (struct aout_link_hash_entry *) NULL
+ && (h->root.type == bfd_link_hash_indirect
+ || h->root.type == bfd_link_hash_warning))
+ {
+ hresolve = (struct aout_link_hash_entry *) h->root.u.i.link;
+ while (hresolve->root.type == bfd_link_hash_indirect
+ || hresolve->root.type == bfd_link_hash_warning)
+ hresolve = ((struct aout_link_hash_entry *)
+ hresolve->root.u.i.link);
+ *sym_hash = hresolve;
+ }
+
+ /* If the symbol has already been written out, skip it. */
+ if (h != NULL
+ && h->written)
+ {
+ if ((type & N_TYPE) == N_INDR
+ || type == N_WARNING)
+ skip_next = TRUE;
+ *symbol_map = h->indx;
+ continue;
+ }
+
+ /* See if we are stripping this symbol. */
+ skip = FALSE;
+ switch (strip)
+ {
+ case strip_none:
+ break;
+ case strip_debugger:
+ if ((type & N_STAB) != 0)
+ skip = TRUE;
+ break;
+ case strip_some:
+ if (bfd_hash_lookup (flaginfo->info->keep_hash, name, FALSE, FALSE)
+ == NULL)
+ skip = TRUE;
+ break;
+ case strip_all:
+ skip = TRUE;
+ break;
+ }
+ if (skip)
+ {
+ if (h != NULL)
+ h->written = TRUE;
+ continue;
+ }
+
+ /* Get the value of the symbol. */
+ if ((type & N_TYPE) == N_TEXT
+ || type == N_WEAKT)
+ symsec = obj_textsec (input_bfd);
+ else if ((type & N_TYPE) == N_DATA
+ || type == N_WEAKD)
+ symsec = obj_datasec (input_bfd);
+ else if ((type & N_TYPE) == N_BSS
+ || type == N_WEAKB)
+ symsec = obj_bsssec (input_bfd);
+ else if ((type & N_TYPE) == N_ABS
+ || type == N_WEAKA)
+ symsec = bfd_abs_section_ptr;
+ else if (((type & N_TYPE) == N_INDR
+ && (hresolve == NULL
+ || (hresolve->root.type != bfd_link_hash_defined
+ && hresolve->root.type != bfd_link_hash_defweak
+ && hresolve->root.type != bfd_link_hash_common)))
+ || type == N_WARNING)
+ {
+ /* Pass the next symbol through unchanged. The
+ condition above for indirect symbols is so that if
+ the indirect symbol was defined, we output it with
+ the correct definition so the debugger will
+ understand it. */
+ pass = TRUE;
+ val = GET_WORD (input_bfd, sym->e_value);
+ symsec = NULL;
+ }
+ else if ((type & N_STAB) != 0)
+ {
+ val = GET_WORD (input_bfd, sym->e_value);
+ symsec = NULL;
+ }
+ else
{
- struct aout_link_hash_entry *h;
+ /* If we get here with an indirect symbol, it means that
+ we are outputting it with a real definition. In such
+ a case we do not want to output the next symbol,
+ which is the target of the indirection. */
+ if ((type & N_TYPE) == N_INDR)
+ skip_next = TRUE;
- /* If we know the symbol this relocation is against,
- convert it into a relocation against a section. This
- is what the native linker does. */
- h = sym_hashes[r_index];
- if (h != (struct aout_link_hash_entry *) NULL
- && h->root.type == bfd_link_hash_defined)
+ symsec = NULL;
+
+ /* We need to get the value from the hash table. We use
+ hresolve so that if we have defined an indirect
+ symbol we output the final definition. */
+ if (h == NULL)
+ {
+ switch (type & N_TYPE)
+ {
+ case N_SETT:
+ symsec = obj_textsec (input_bfd);
+ break;
+ case N_SETD:
+ symsec = obj_datasec (input_bfd);
+ break;
+ case N_SETB:
+ symsec = obj_bsssec (input_bfd);
+ break;
+ case N_SETA:
+ symsec = bfd_abs_section_ptr;
+ break;
+ default:
+ val = 0;
+ break;
+ }
+ }
+ else if (hresolve->root.type == bfd_link_hash_defined
+ || hresolve->root.type == bfd_link_hash_defweak)
{
+ asection *input_section;
asection *output_section;
- /* Change the r_extern value. */
- if (output_bfd->xvec->header_byteorder_big_p)
- rel->r_type[0] &=~ RELOC_EXT_BITS_EXTERN_BIG;
- else
- rel->r_type[0] &=~ RELOC_EXT_BITS_EXTERN_LITTLE;
+ /* This case usually means a common symbol which was
+ turned into a defined symbol. */
+ input_section = hresolve->root.u.def.section;
+ output_section = input_section->output_section;
+ BFD_ASSERT (bfd_is_abs_section (output_section)
+ || output_section->owner == output_bfd);
+ val = (hresolve->root.u.def.value
+ + bfd_get_section_vma (output_bfd, output_section)
+ + input_section->output_offset);
+
+ /* Get the correct type based on the section. If
+ this is a constructed set, force it to be
+ globally visible. */
+ if (type == N_SETT
+ || type == N_SETD
+ || type == N_SETB
+ || type == N_SETA)
+ type |= N_EXT;
+
+ type &=~ N_TYPE;
- /* Compute a new r_index. */
- output_section = h->root.u.def.section->output_section;
if (output_section == obj_textsec (output_bfd))
- r_index = N_TEXT;
+ type |= (hresolve->root.type == bfd_link_hash_defined
+ ? N_TEXT
+ : N_WEAKT);
else if (output_section == obj_datasec (output_bfd))
- r_index = N_DATA;
+ type |= (hresolve->root.type == bfd_link_hash_defined
+ ? N_DATA
+ : N_WEAKD);
else if (output_section == obj_bsssec (output_bfd))
- r_index = N_BSS;
+ type |= (hresolve->root.type == bfd_link_hash_defined
+ ? N_BSS
+ : N_WEAKB);
else
- r_index = N_ABS;
-
- /* Add the symbol value and the section VMA to the
- addend. */
- relocation = (h->root.u.def.value
- + output_section->vma
- + h->root.u.def.section->output_offset);
-
- /* Now RELOCATION is the VMA of the final
- destination. If this is a PC relative reloc,
- then ADDEND is the negative of the source VMA.
- We want to set ADDEND to the difference between
- the destination VMA and the source VMA, which
- means we must adjust RELOCATION by the change in
- the source VMA. This is done below. */
+ type |= (hresolve->root.type == bfd_link_hash_defined
+ ? N_ABS
+ : N_WEAKA);
}
- else
+ else if (hresolve->root.type == bfd_link_hash_common)
+ val = hresolve->root.u.c.size;
+ else if (hresolve->root.type == bfd_link_hash_undefweak)
{
- /* We must change r_index according to the symbol
- map. */
- r_index = symbol_map[r_index];
-
- if (r_index == -1)
- {
- const char *name;
-
- name = (strings
- + GET_WORD (input_bfd, syms[r_index].e_strx));
- if (! ((*finfo->info->callbacks->unattached_reloc)
- (finfo->info, name, input_bfd, input_section,
- r_addr)))
- return false;
- r_index = 0;
- }
-
- relocation = 0;
-
- /* If this is a PC relative reloc, then the addend
- is the negative of the source VMA. We must
- adjust it by the change in the source VMA. This
- is done below. */
+ val = 0;
+ type = N_WEAKU;
}
+ else
+ val = 0;
+ }
+ if (symsec != NULL)
+ val = (symsec->output_section->vma
+ + symsec->output_offset
+ + (GET_WORD (input_bfd, sym->e_value)
+ - symsec->vma));
- /* Write out the new r_index value. */
- if (output_bfd->xvec->header_byteorder_big_p)
+ /* If this is a global symbol set the written flag, and if
+ it is a local symbol see if we should discard it. */
+ if (h != NULL)
+ {
+ h->written = TRUE;
+ h->indx = obj_aout_external_sym_count (output_bfd);
+ }
+ else if ((type & N_TYPE) != N_SETT
+ && (type & N_TYPE) != N_SETD
+ && (type & N_TYPE) != N_SETB
+ && (type & N_TYPE) != N_SETA)
+ {
+ switch (discard)
{
- rel->r_index[0] = r_index >> 16;
- rel->r_index[1] = r_index >> 8;
- rel->r_index[2] = r_index;
+ case discard_none:
+ case discard_sec_merge:
+ break;
+ case discard_l:
+ if ((type & N_STAB) == 0
+ && bfd_is_local_label_name (input_bfd, name))
+ skip = TRUE;
+ break;
+ case discard_all:
+ skip = TRUE;
+ break;
}
- else
+ if (skip)
{
- rel->r_index[2] = r_index >> 16;
- rel->r_index[1] = r_index >> 8;
- rel->r_index[0] = r_index;
+ pass = FALSE;
+ continue;
}
}
- else
- {
- asection *section;
-
- /* This is a relocation against a section. We must
- adjust by the amount that the section moved. */
- section = aout_reloc_index_to_section (input_bfd, r_index);
- relocation = (section->output_section->vma
- + section->output_offset
- - section->vma);
-
- /* If this is a PC relative reloc, then the addend is
- the difference in VMA between the destination and the
- source. We have just adjusted for the change in VMA
- of the destination, so we must also adjust by the
- change in VMA of the source. This is done below. */
- }
-
- /* As described above, we must always adjust a PC relative
- reloc by the change in VMA of the source. */
- if (howto_table_ext[r_type].pc_relative)
- relocation -= (input_section->output_section->vma
- + input_section->output_offset
- - input_section->vma);
-
- /* Change the addend if necessary. */
- if (relocation != 0)
- PUT_WORD (output_bfd, r_addend + relocation, rel->r_addend);
-
- /* Change the address of the relocation. */
- PUT_WORD (output_bfd,
- r_addr + input_section->output_offset,
- rel->r_address);
- }
- else
- {
- bfd_reloc_status_type r;
- /* We are generating an executable, and must do a full
- relocation. */
- if (r_extern)
+ /* An N_BINCL symbol indicates the start of the stabs
+ entries for a header file. We need to scan ahead to the
+ next N_EINCL symbol, ignoring nesting, adding up all the
+ characters in the symbol names, not including the file
+ numbers in types (the first number after an open
+ parenthesis). */
+ if (type == (int) N_BINCL)
{
- struct aout_link_hash_entry *h;
-
- h = sym_hashes[r_index];
-
- if (check_dynamic_reloc != NULL)
+ struct external_nlist *incl_sym;
+ int nest;
+ struct aout_link_includes_entry *incl_entry;
+ struct aout_link_includes_totals *t;
+
+ val = 0;
+ nest = 0;
+ for (incl_sym = sym + 1; incl_sym < sym_end; incl_sym++)
{
- boolean skip;
-
- if (! ((*check_dynamic_reloc)
- (finfo->info, input_bfd, input_section, h,
- (PTR) rel, &skip)))
- return false;
- if (skip)
- continue;
+ int incl_type;
+
+ incl_type = H_GET_8 (input_bfd, incl_sym->e_type);
+ if (incl_type == (int) N_EINCL)
+ {
+ if (nest == 0)
+ break;
+ --nest;
+ }
+ else if (incl_type == (int) N_BINCL)
+ ++nest;
+ else if (nest == 0)
+ {
+ const char *s;
+
+ s = strings + GET_WORD (input_bfd, incl_sym->e_strx);
+ for (; *s != '\0'; s++)
+ {
+ val += *s;
+ if (*s == '(')
+ {
+ /* Skip the file number. */
+ ++s;
+ while (ISDIGIT (*s))
+ ++s;
+ --s;
+ }
+ }
+ }
}
- if (h != (struct aout_link_hash_entry *) NULL
- && h->root.type == bfd_link_hash_defined)
+ /* If we have already included a header file with the
+ same value, then replace this one with an N_EXCL
+ symbol. */
+ copy = (bfd_boolean) (! flaginfo->info->keep_memory);
+ incl_entry = aout_link_includes_lookup (&flaginfo->includes,
+ name, TRUE, copy);
+ if (incl_entry == NULL)
+ return FALSE;
+ for (t = incl_entry->totals; t != NULL; t = t->next)
+ if (t->total == val)
+ break;
+ if (t == NULL)
{
- relocation = (h->root.u.def.value
- + h->root.u.def.section->output_section->vma
- + h->root.u.def.section->output_offset);
+ /* This is the first time we have seen this header
+ file with this set of stabs strings. */
+ t = (struct aout_link_includes_totals *)
+ bfd_hash_allocate (&flaginfo->includes.root,
+ sizeof *t);
+ if (t == NULL)
+ return FALSE;
+ t->total = val;
+ t->next = incl_entry->totals;
+ incl_entry->totals = t;
}
- else if (h != (struct aout_link_hash_entry *) NULL
- && h->root.type == bfd_link_hash_weak)
- relocation = 0;
else
{
- const char *name;
-
- name = strings + GET_WORD (input_bfd, syms[r_index].e_strx);
- if (! ((*finfo->info->callbacks->undefined_symbol)
- (finfo->info, name, input_bfd, input_section,
- r_addr)))
- return false;
- relocation = 0;
- }
- }
- else
- {
- asection *section;
-
- section = aout_reloc_index_to_section (input_bfd, r_index);
-
- /* If this is a PC relative reloc, then R_ADDEND is the
- difference between the two vmas, or
- old_dest_sec + old_dest_off - (old_src_sec + old_src_off)
- where
- old_dest_sec == section->vma
- and
- old_src_sec == input_section->vma
- and
- old_src_off == r_addr
-
- _bfd_final_link_relocate expects RELOCATION +
- R_ADDEND to be the VMA of the destination minus
- r_addr (the minus r_addr is because this relocation
- is not pcrel_offset, which is a bit confusing and
- should, perhaps, be changed), or
- new_dest_sec
- where
- new_dest_sec == output_section->vma + output_offset
- We arrange for this to happen by setting RELOCATION to
- new_dest_sec + old_src_sec - old_dest_sec
-
- If this is not a PC relative reloc, then R_ADDEND is
- simply the VMA of the destination, so we set
- RELOCATION to the change in the destination VMA, or
- new_dest_sec - old_dest_sec
- */
- relocation = (section->output_section->vma
- + section->output_offset
- - section->vma);
- if (howto_table_ext[r_type].pc_relative)
- relocation += input_section->vma;
- }
-
- r = _bfd_final_link_relocate (howto_table_ext + r_type,
- input_bfd, input_section,
- contents, r_addr, relocation,
- r_addend);
- if (r != bfd_reloc_ok)
- {
- switch (r)
- {
- default:
- case bfd_reloc_outofrange:
- abort ();
- case bfd_reloc_overflow:
- {
- const char *name;
+ int *incl_map;
- if (r_extern)
- name = strings + GET_WORD (input_bfd,
- syms[r_index].e_strx);
- else
- {
- asection *s;
+ /* This is a duplicate header file. We must change
+ it to be an N_EXCL entry, and mark all the
+ included symbols to prevent outputting them. */
+ type = (int) N_EXCL;
- s = aout_reloc_index_to_section (input_bfd, r_index);
- name = bfd_section_name (input_bfd, s);
- }
- if (! ((*finfo->info->callbacks->reloc_overflow)
- (finfo->info, name, howto_table_ext[r_type].name,
- r_addend, input_bfd, input_section, r_addr)))
- return false;
- }
- break;
+ nest = 0;
+ for (incl_sym = sym + 1, incl_map = symbol_map + 1;
+ incl_sym < sym_end;
+ incl_sym++, incl_map++)
+ {
+ int incl_type;
+
+ incl_type = H_GET_8 (input_bfd, incl_sym->e_type);
+ if (incl_type == (int) N_EINCL)
+ {
+ if (nest == 0)
+ {
+ *incl_map = -1;
+ break;
+ }
+ --nest;
+ }
+ else if (incl_type == (int) N_BINCL)
+ ++nest;
+ else if (nest == 0)
+ *incl_map = -1;
+ }
}
}
}
+
+ /* Copy this symbol into the list of symbols we are going to
+ write out. */
+ H_PUT_8 (output_bfd, type, outsym->e_type);
+ H_PUT_8 (output_bfd, H_GET_8 (input_bfd, sym->e_other), outsym->e_other);
+ H_PUT_16 (output_bfd, H_GET_16 (input_bfd, sym->e_desc), outsym->e_desc);
+ copy = FALSE;
+ if (! flaginfo->info->keep_memory)
+ {
+ /* name points into a string table which we are going to
+ free. If there is a hash table entry, use that string.
+ Otherwise, copy name into memory. */
+ if (h != NULL)
+ name = h->root.root.string;
+ else
+ copy = TRUE;
+ }
+ strtab_index = add_to_stringtab (output_bfd, flaginfo->strtab,
+ name, copy);
+ if (strtab_index == (bfd_size_type) -1)
+ return FALSE;
+ PUT_WORD (output_bfd, strtab_index, outsym->e_strx);
+ PUT_WORD (output_bfd, val, outsym->e_value);
+ *symbol_map = obj_aout_external_sym_count (output_bfd);
+ ++obj_aout_external_sym_count (output_bfd);
+ ++outsym;
+ }
+
+ /* Write out the output symbols we have just constructed. */
+ if (outsym > flaginfo->output_syms)
+ {
+ bfd_size_type outsym_size;
+
+ if (bfd_seek (output_bfd, flaginfo->symoff, SEEK_SET) != 0)
+ return FALSE;
+ outsym_size = outsym - flaginfo->output_syms;
+ outsym_size *= EXTERNAL_NLIST_SIZE;
+ if (bfd_bwrite ((void *) flaginfo->output_syms, outsym_size, output_bfd)
+ != outsym_size)
+ return FALSE;
+ flaginfo->symoff += outsym_size;
}
- return true;
+ return TRUE;
}
-/* Handle a link order which is supposed to generate a reloc. */
+/* Link an a.out input BFD into the output file. */
-static boolean
-aout_link_reloc_link_order (finfo, o, p)
- struct aout_final_link_info *finfo;
- asection *o;
- struct bfd_link_order *p;
+static bfd_boolean
+aout_link_input_bfd (struct aout_final_link_info *flaginfo, bfd *input_bfd)
{
- struct bfd_link_order_reloc *pr;
- int r_index;
- int r_extern;
- const reloc_howto_type *howto;
- file_ptr *reloff_ptr;
- struct reloc_std_external srel;
- struct reloc_ext_external erel;
- PTR rel_ptr;
+ BFD_ASSERT (bfd_get_format (input_bfd) == bfd_object);
- pr = p->u.reloc.p;
+ /* If this is a dynamic object, it may need special handling. */
+ if ((input_bfd->flags & DYNAMIC) != 0
+ && aout_backend_info (input_bfd)->link_dynamic_object != NULL)
+ return ((*aout_backend_info (input_bfd)->link_dynamic_object)
+ (flaginfo->info, input_bfd));
- if (p->type == bfd_section_reloc_link_order)
+ /* Get the symbols. We probably have them already, unless
+ flaginfo->info->keep_memory is FALSE. */
+ if (! aout_get_external_symbols (input_bfd))
+ return FALSE;
+
+ /* Write out the symbols and get a map of the new indices. The map
+ is placed into flaginfo->symbol_map. */
+ if (! aout_link_write_symbols (flaginfo, input_bfd))
+ return FALSE;
+
+ /* Relocate and write out the sections. These functions use the
+ symbol map created by aout_link_write_symbols. The linker_mark
+ field will be set if these sections are to be included in the
+ link, which will normally be the case. */
+ if (obj_textsec (input_bfd)->linker_mark)
{
- r_extern = 0;
- if (bfd_is_abs_section (pr->u.section))
- r_index = N_ABS | N_EXT;
- else
- {
- BFD_ASSERT (pr->u.section->owner == finfo->output_bfd);
- r_index = pr->u.section->target_index;
- }
+ if (! aout_link_input_section (flaginfo, input_bfd,
+ obj_textsec (input_bfd),
+ &flaginfo->treloff,
+ exec_hdr (input_bfd)->a_trsize))
+ return FALSE;
}
- else
+ if (obj_datasec (input_bfd)->linker_mark)
{
- struct aout_link_hash_entry *h;
-
- BFD_ASSERT (p->type == bfd_symbol_reloc_link_order);
- r_extern = 1;
- h = aout_link_hash_lookup (aout_hash_table (finfo->info),
- pr->u.name, false, false, true);
- if (h != (struct aout_link_hash_entry *) NULL
- && h->indx == -1)
- r_index = h->indx;
- else
- {
- if (! ((*finfo->info->callbacks->unattached_reloc)
- (finfo->info, pr->u.name, (bfd *) NULL,
- (asection *) NULL, (bfd_vma) 0)))
- return false;
- r_index = 0;
- }
+ if (! aout_link_input_section (flaginfo, input_bfd,
+ obj_datasec (input_bfd),
+ &flaginfo->dreloff,
+ exec_hdr (input_bfd)->a_drsize))
+ return FALSE;
}
- howto = bfd_reloc_type_lookup (finfo->output_bfd, pr->reloc);
- if (howto == (const reloc_howto_type *) NULL)
+ /* If we are not keeping memory, we don't need the symbols any
+ longer. We still need them if we are keeping memory, because the
+ strings in the hash table point into them. */
+ if (! flaginfo->info->keep_memory)
{
- bfd_set_error (bfd_error_bad_value);
- return false;
+ if (! aout_link_free_symbols (input_bfd))
+ return FALSE;
}
- if (o == obj_textsec (finfo->output_bfd))
- reloff_ptr = &finfo->treloff;
- else if (o == obj_datasec (finfo->output_bfd))
- reloff_ptr = &finfo->dreloff;
- else
- abort ();
+ return TRUE;
+}
+
+/* Do the final link step. This is called on the output BFD. The
+ INFO structure should point to a list of BFDs linked through the
+ link.next field which can be used to find each BFD which takes part
+ in the output. Also, each section in ABFD should point to a list
+ of bfd_link_order structures which list all the input sections for
+ the output section. */
+
+bfd_boolean
+NAME (aout, final_link) (bfd *abfd,
+ struct bfd_link_info *info,
+ void (*callback) (bfd *, file_ptr *, file_ptr *, file_ptr *))
+{
+ struct aout_final_link_info aout_info;
+ bfd_boolean includes_hash_initialized = FALSE;
+ bfd *sub;
+ bfd_size_type trsize, drsize;
+ bfd_size_type max_contents_size;
+ bfd_size_type max_relocs_size;
+ bfd_size_type max_sym_count;
+ struct bfd_link_order *p;
+ asection *o;
+ bfd_boolean have_link_order_relocs;
+
+ if (bfd_link_pic (info))
+ abfd->flags |= DYNAMIC;
- if (obj_reloc_entry_size (finfo->output_bfd) == RELOC_STD_SIZE)
+ aout_info.info = info;
+ aout_info.output_bfd = abfd;
+ aout_info.contents = NULL;
+ aout_info.relocs = NULL;
+ aout_info.symbol_map = NULL;
+ aout_info.output_syms = NULL;
+
+ if (!bfd_hash_table_init_n (&aout_info.includes.root,
+ aout_link_includes_newfunc,
+ sizeof (struct aout_link_includes_entry),
+ 251))
+ goto error_return;
+ includes_hash_initialized = TRUE;
+
+ /* Figure out the largest section size. Also, if generating
+ relocatable output, count the relocs. */
+ trsize = 0;
+ drsize = 0;
+ max_contents_size = 0;
+ max_relocs_size = 0;
+ max_sym_count = 0;
+ for (sub = info->input_bfds; sub != NULL; sub = sub->link.next)
{
- int r_pcrel;
- int r_baserel;
- int r_jmptable;
- int r_relative;
- int r_length;
+ bfd_size_type sz;
-#ifdef MY_put_reloc
- MY_put_reloc(finfo->output_bfd, r_extern, r_index, p->offset, howto, &srel);
-#else
- r_pcrel = howto->pc_relative;
- r_baserel = (howto->type & 8) != 0;
- r_jmptable = (howto->type & 16) != 0;
- r_relative = (howto->type & 32) != 0;
- r_length = howto->size;
-
- PUT_WORD (finfo->output_bfd, p->offset, srel.r_address);
- if (finfo->output_bfd->xvec->header_byteorder_big_p)
+ if (bfd_link_relocatable (info))
{
- srel.r_index[0] = r_index >> 16;
- srel.r_index[1] = r_index >> 8;
- srel.r_index[2] = r_index;
- srel.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));
+ if (bfd_get_flavour (sub) == bfd_target_aout_flavour)
+ {
+ trsize += exec_hdr (sub)->a_trsize;
+ drsize += exec_hdr (sub)->a_drsize;
+ }
+ else
+ {
+ /* FIXME: We need to identify the .text and .data sections
+ and call get_reloc_upper_bound and canonicalize_reloc to
+ work out the number of relocs needed, and then multiply
+ by the reloc size. */
+ _bfd_error_handler
+ /* xgettext:c-format */
+ (_("%pB: relocatable link from %s to %s not supported"),
+ abfd, sub->xvec->name, abfd->xvec->name);
+ bfd_set_error (bfd_error_invalid_operation);
+ goto error_return;
+ }
}
- else
+
+ if (bfd_get_flavour (sub) == bfd_target_aout_flavour)
{
- srel.r_index[2] = r_index >> 16;
- srel.r_index[1] = r_index >> 8;
- srel.r_index[0] = r_index;
- srel.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));
+ sz = obj_textsec (sub)->size;
+ if (sz > max_contents_size)
+ max_contents_size = sz;
+ sz = obj_datasec (sub)->size;
+ if (sz > max_contents_size)
+ max_contents_size = sz;
+
+ sz = exec_hdr (sub)->a_trsize;
+ if (sz > max_relocs_size)
+ max_relocs_size = sz;
+ sz = exec_hdr (sub)->a_drsize;
+ if (sz > max_relocs_size)
+ max_relocs_size = sz;
+
+ sz = obj_aout_external_sym_count (sub);
+ if (sz > max_sym_count)
+ max_sym_count = sz;
}
-#endif
- rel_ptr = (PTR) &srel;
+ }
- /* We have to write the addend into the object file, since
- standard a.out relocs are in place. It would be more
- reliable if we had the current contents of the file here,
- rather than assuming zeroes, but we can't read the file since
- it was opened using bfd_openw. */
- if (pr->addend != 0)
+ if (bfd_link_relocatable (info))
+ {
+ if (obj_textsec (abfd) != NULL)
+ trsize += (_bfd_count_link_order_relocs (obj_textsec (abfd)
+ ->map_head.link_order)
+ * obj_reloc_entry_size (abfd));
+ if (obj_datasec (abfd) != NULL)
+ drsize += (_bfd_count_link_order_relocs (obj_datasec (abfd)
+ ->map_head.link_order)
+ * obj_reloc_entry_size (abfd));
+ }
+
+ exec_hdr (abfd)->a_trsize = trsize;
+ exec_hdr (abfd)->a_drsize = drsize;
+
+ exec_hdr (abfd)->a_entry = bfd_get_start_address (abfd);
+
+ /* Adjust the section sizes and vmas according to the magic number.
+ This sets a_text, a_data and a_bss in the exec_hdr and sets the
+ filepos for each section. */
+ if (! NAME (aout, adjust_sizes_and_vmas) (abfd))
+ goto error_return;
+
+ /* The relocation and symbol file positions differ among a.out
+ targets. We are passed a callback routine from the backend
+ specific code to handle this.
+ FIXME: At this point we do not know how much space the symbol
+ table will require. This will not work for any (nonstandard)
+ a.out target that needs to know the symbol table size before it
+ can compute the relocation file positions. */
+ (*callback) (abfd, &aout_info.treloff, &aout_info.dreloff,
+ &aout_info.symoff);
+ obj_textsec (abfd)->rel_filepos = aout_info.treloff;
+ obj_datasec (abfd)->rel_filepos = aout_info.dreloff;
+ obj_sym_filepos (abfd) = aout_info.symoff;
+
+ /* We keep a count of the symbols as we output them. */
+ obj_aout_external_sym_count (abfd) = 0;
+
+ /* We accumulate the string table as we write out the symbols. */
+ aout_info.strtab = _bfd_stringtab_init ();
+ if (aout_info.strtab == NULL)
+ goto error_return;
+
+ /* Allocate buffers to hold section contents and relocs. */
+ aout_info.contents = (bfd_byte *) bfd_malloc (max_contents_size);
+ aout_info.relocs = bfd_malloc (max_relocs_size);
+ aout_info.symbol_map = (int *) bfd_malloc (max_sym_count * sizeof (int));
+ aout_info.output_syms = (struct external_nlist *)
+ bfd_malloc ((max_sym_count + 1) * sizeof (struct external_nlist));
+ if ((aout_info.contents == NULL && max_contents_size != 0)
+ || (aout_info.relocs == NULL && max_relocs_size != 0)
+ || (aout_info.symbol_map == NULL && max_sym_count != 0)
+ || aout_info.output_syms == NULL)
+ goto error_return;
+
+ /* If we have a symbol named __DYNAMIC, force it out now. This is
+ required by SunOS. Doing this here rather than in sunos.c is a
+ hack, but it's easier than exporting everything which would be
+ needed. */
+ {
+ struct aout_link_hash_entry *h;
+
+ h = aout_link_hash_lookup (aout_hash_table (info), "__DYNAMIC",
+ FALSE, FALSE, FALSE);
+ if (h != NULL)
+ aout_link_write_other_symbol (&h->root.root, &aout_info);
+ }
+
+ /* The most time efficient way to do the link would be to read all
+ the input object files into memory and then sort out the
+ information into the output file. Unfortunately, that will
+ probably use too much memory. Another method would be to step
+ through everything that composes the text section and write it
+ out, and then everything that composes the data section and write
+ it out, and then write out the relocs, and then write out the
+ symbols. Unfortunately, that requires reading stuff from each
+ input file several times, and we will not be able to keep all the
+ input files open simultaneously, and reopening them will be slow.
+
+ What we do is basically process one input file at a time. We do
+ everything we need to do with an input file once--copy over the
+ section contents, handle the relocation information, and write
+ out the symbols--and then we throw away the information we read
+ from it. This approach requires a lot of lseeks of the output
+ file, which is unfortunate but still faster than reopening a lot
+ of files.
+
+ We use the output_has_begun field of the input BFDs to see
+ whether we have already handled it. */
+ for (sub = info->input_bfds; sub != NULL; sub = sub->link.next)
+ sub->output_has_begun = FALSE;
+
+ /* Mark all sections which are to be included in the link. This
+ will normally be every section. We need to do this so that we
+ can identify any sections which the linker has decided to not
+ include. */
+ for (o = abfd->sections; o != NULL; o = o->next)
+ {
+ for (p = o->map_head.link_order; p != NULL; p = p->next)
+ if (p->type == bfd_indirect_link_order)
+ p->u.indirect.section->linker_mark = TRUE;
+ }
+
+ have_link_order_relocs = FALSE;
+ for (o = abfd->sections; o != NULL; o = o->next)
+ {
+ for (p = o->map_head.link_order;
+ p != NULL;
+ p = p->next)
{
- bfd_size_type size;
- bfd_reloc_status_type r;
- bfd_byte *buf;
- boolean ok;
+ if (p->type == bfd_indirect_link_order
+ && (bfd_get_flavour (p->u.indirect.section->owner)
+ == bfd_target_aout_flavour))
+ {
+ bfd *input_bfd;
- size = bfd_get_reloc_size (howto);
- buf = (bfd_byte *) bfd_zmalloc (size);
- if (buf == (bfd_byte *) NULL)
+ input_bfd = p->u.indirect.section->owner;
+ if (! input_bfd->output_has_begun)
+ {
+ if (! aout_link_input_bfd (&aout_info, input_bfd))
+ goto error_return;
+ input_bfd->output_has_begun = TRUE;
+ }
+ }
+ else if (p->type == bfd_section_reloc_link_order
+ || p->type == bfd_symbol_reloc_link_order)
{
- bfd_set_error (bfd_error_no_memory);
- return false;
+ /* These are handled below. */
+ have_link_order_relocs = TRUE;
}
- r = _bfd_relocate_contents (howto, finfo->output_bfd,
- pr->addend, buf);
- switch (r)
+ else
{
- case bfd_reloc_ok:
- break;
- default:
- case bfd_reloc_outofrange:
- abort ();
- case bfd_reloc_overflow:
- if (! ((*finfo->info->callbacks->reloc_overflow)
- (finfo->info,
- (p->type == bfd_section_reloc_link_order
- ? bfd_section_name (finfo->output_bfd,
- pr->u.section)
- : pr->u.name),
- howto->name, pr->addend, (bfd *) NULL,
- (asection *) NULL, (bfd_vma) 0)))
- {
- free (buf);
- return false;
- }
- break;
+ if (! _bfd_default_link_order (abfd, info, o, p))
+ goto error_return;
}
- ok = bfd_set_section_contents (finfo->output_bfd, o,
- (PTR) buf,
- (file_ptr) p->offset,
- size);
- free (buf);
- if (! ok)
- return false;
}
}
- else
- {
- PUT_WORD (finfo->output_bfd, p->offset, erel.r_address);
- if (finfo->output_bfd->xvec->header_byteorder_big_p)
- {
- erel.r_index[0] = r_index >> 16;
- erel.r_index[1] = r_index >> 8;
- erel.r_index[2] = r_index;
- erel.r_type[0] =
- ((r_extern ? RELOC_EXT_BITS_EXTERN_BIG : 0)
- | (howto->type << RELOC_EXT_BITS_TYPE_SH_BIG));
- }
- else
+ /* Write out any symbols that we have not already written out. */
+ bfd_hash_traverse (&info->hash->table,
+ aout_link_write_other_symbol,
+ &aout_info);
+
+ /* Now handle any relocs we were asked to create by the linker.
+ These did not come from any input file. We must do these after
+ we have written out all the symbols, so that we know the symbol
+ indices to use. */
+ if (have_link_order_relocs)
+ {
+ for (o = abfd->sections; o != NULL; o = o->next)
{
- erel.r_index[2] = r_index >> 16;
- erel.r_index[1] = r_index >> 8;
- erel.r_index[0] = r_index;
- erel.r_type[0] =
- (r_extern ? RELOC_EXT_BITS_EXTERN_LITTLE : 0)
- | (howto->type << RELOC_EXT_BITS_TYPE_SH_LITTLE);
+ for (p = o->map_head.link_order;
+ p != NULL;
+ p = p->next)
+ {
+ if (p->type == bfd_section_reloc_link_order
+ || p->type == bfd_symbol_reloc_link_order)
+ {
+ if (! aout_link_reloc_link_order (&aout_info, o, p))
+ goto error_return;
+ }
+ }
}
+ }
- PUT_WORD (finfo->output_bfd, pr->addend, erel.r_addend);
+ if (aout_info.contents != NULL)
+ {
+ free (aout_info.contents);
+ aout_info.contents = NULL;
+ }
+ if (aout_info.relocs != NULL)
+ {
+ free (aout_info.relocs);
+ aout_info.relocs = NULL;
+ }
+ if (aout_info.symbol_map != NULL)
+ {
+ free (aout_info.symbol_map);
+ aout_info.symbol_map = NULL;
+ }
+ if (aout_info.output_syms != NULL)
+ {
+ free (aout_info.output_syms);
+ aout_info.output_syms = NULL;
+ }
+ if (includes_hash_initialized)
+ {
+ bfd_hash_table_free (&aout_info.includes.root);
+ includes_hash_initialized = FALSE;
+ }
- rel_ptr = (PTR) &erel;
+ /* Finish up any dynamic linking we may be doing. */
+ if (aout_backend_info (abfd)->finish_dynamic_link != NULL)
+ {
+ if (! (*aout_backend_info (abfd)->finish_dynamic_link) (abfd, info))
+ goto error_return;
}
- if (bfd_seek (finfo->output_bfd, *reloff_ptr, SEEK_SET) != 0
- || (bfd_write (rel_ptr, (bfd_size_type) 1,
- obj_reloc_entry_size (finfo->output_bfd),
- finfo->output_bfd)
- != obj_reloc_entry_size (finfo->output_bfd)))
- return false;
+ /* Update the header information. */
+ abfd->symcount = obj_aout_external_sym_count (abfd);
+ exec_hdr (abfd)->a_syms = abfd->symcount * EXTERNAL_NLIST_SIZE;
+ obj_str_filepos (abfd) = obj_sym_filepos (abfd) + exec_hdr (abfd)->a_syms;
+ obj_textsec (abfd)->reloc_count =
+ exec_hdr (abfd)->a_trsize / obj_reloc_entry_size (abfd);
+ obj_datasec (abfd)->reloc_count =
+ exec_hdr (abfd)->a_drsize / obj_reloc_entry_size (abfd);
+
+ /* Write out the string table, unless there are no symbols. */
+ if (bfd_seek (abfd, obj_str_filepos (abfd), SEEK_SET) != 0)
+ goto error_return;
+ if (abfd->symcount > 0)
+ {
+ if (!emit_stringtab (abfd, aout_info.strtab))
+ goto error_return;
+ }
+ else
+ {
+ bfd_byte b[BYTES_IN_WORD];
- *reloff_ptr += obj_reloc_entry_size (finfo->output_bfd);
+ memset (b, 0, BYTES_IN_WORD);
+ if (bfd_bwrite (b, (bfd_size_type) BYTES_IN_WORD, abfd) != BYTES_IN_WORD)
+ goto error_return;
+ }
- /* Assert that the relocs have not run into the symbols, and that n
- the text relocs have not run into the data relocs. */
- BFD_ASSERT (*reloff_ptr <= obj_sym_filepos (finfo->output_bfd)
- && (reloff_ptr != &finfo->treloff
- || (*reloff_ptr
- <= obj_datasec (finfo->output_bfd)->rel_filepos)));
+ return TRUE;
- return true;
+ error_return:
+ if (aout_info.contents != NULL)
+ free (aout_info.contents);
+ if (aout_info.relocs != NULL)
+ free (aout_info.relocs);
+ if (aout_info.symbol_map != NULL)
+ free (aout_info.symbol_map);
+ if (aout_info.output_syms != NULL)
+ free (aout_info.output_syms);
+ if (includes_hash_initialized)
+ bfd_hash_table_free (&aout_info.includes.root);
+ return FALSE;
}
projects / deliverable / binutils-gdb.git / blobdiff