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-rw-r--r--bfd/mach-o-x86-64.c280
1 files changed, 280 insertions, 0 deletions
diff --git a/bfd/mach-o-x86-64.c b/bfd/mach-o-x86-64.c
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index 0000000..005315d
--- /dev/null
+++ b/bfd/mach-o-x86-64.c
@@ -0,0 +1,280 @@
+/* Intel x86-64 Mach-O support for BFD.
+ Copyright 2010
+ Free Software Foundation, Inc.
+
+ 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 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.
+
+ 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. */
+
+#include "sysdep.h"
+#include "mach-o.h"
+#include "bfd.h"
+#include "libbfd.h"
+#include "libiberty.h"
+
+#define bfd_mach_o_object_p bfd_mach_o_x86_64_object_p
+#define bfd_mach_o_core_p bfd_mach_o_x86_64_core_p
+#define bfd_mach_o_mkobject bfd_mach_o_x86_64_mkobject
+
+static const bfd_target *
+bfd_mach_o_x86_64_object_p (bfd *abfd)
+{
+ return bfd_mach_o_header_p (abfd, 0, BFD_MACH_O_CPU_TYPE_X86_64);
+}
+
+static const bfd_target *
+bfd_mach_o_x86_64_core_p (bfd *abfd)
+{
+ return bfd_mach_o_header_p (abfd,
+ BFD_MACH_O_MH_CORE, BFD_MACH_O_CPU_TYPE_X86_64);
+}
+
+static bfd_boolean
+bfd_mach_o_x86_64_mkobject (bfd *abfd)
+{
+ bfd_mach_o_data_struct *mdata;
+
+ if (!bfd_mach_o_mkobject_init (abfd))
+ return FALSE;
+
+ mdata = bfd_mach_o_get_data (abfd);
+ mdata->header.magic = BFD_MACH_O_MH_MAGIC;
+ mdata->header.cputype = BFD_MACH_O_CPU_TYPE_X86_64;
+ mdata->header.cpusubtype = BFD_MACH_O_CPU_SUBTYPE_X86_ALL;
+ mdata->header.byteorder = BFD_ENDIAN_LITTLE;
+ mdata->header.version = 1;
+
+ return TRUE;
+}
+
+/* In case we're on a 32-bit machine, construct a 64-bit "-1" value. */
+#define MINUS_ONE (~ (bfd_vma) 0)
+
+static reloc_howto_type x86_64_howto_table[]=
+{
+ /* 0 */
+ HOWTO(BFD_RELOC_64, 0, 4, 64, FALSE, 0,
+ complain_overflow_bitfield,
+ NULL, "64",
+ FALSE, MINUS_ONE, MINUS_ONE, FALSE),
+ HOWTO(BFD_RELOC_32, 0, 2, 32, FALSE, 0,
+ complain_overflow_bitfield,
+ NULL, "32",
+ FALSE, 0xffffffff, 0xffffffff, FALSE),
+ HOWTO(BFD_RELOC_32_PCREL, 0, 2, 32, TRUE, 0,
+ complain_overflow_bitfield,
+ NULL, "DISP32",
+ FALSE, 0xffffffff, 0xffffffff, TRUE),
+ HOWTO(BFD_RELOC_MACH_O_X86_64_PCREL32_1, 0, 2, 32, TRUE, 0,
+ complain_overflow_bitfield,
+ NULL, "DISP32_1",
+ FALSE, 0xffffffff, 0xffffffff, TRUE),
+ /* 4 */
+ HOWTO(BFD_RELOC_MACH_O_X86_64_PCREL32_2, 0, 2, 32, TRUE, 0,
+ complain_overflow_bitfield,
+ NULL, "DISP32_2",
+ FALSE, 0xffffffff, 0xffffffff, TRUE),
+ HOWTO(BFD_RELOC_MACH_O_X86_64_PCREL32_4, 0, 2, 32, TRUE, 0,
+ complain_overflow_bitfield,
+ NULL, "DISP32_4",
+ FALSE, 0xffffffff, 0xffffffff, TRUE),
+ HOWTO(BFD_RELOC_MACH_O_X86_64_BRANCH32, 0, 2, 32, TRUE, 0,
+ complain_overflow_bitfield,
+ NULL, "BRANCH32",
+ FALSE, 0xffffffff, 0xffffffff, TRUE),
+ HOWTO(BFD_RELOC_MACH_O_X86_64_GOT_LOAD, 0, 2, 32, TRUE, 0,
+ complain_overflow_bitfield,
+ NULL, "GOT_LOAD",
+ FALSE, 0xffffffff, 0xffffffff, TRUE),
+ /* 8 */
+ HOWTO(BFD_RELOC_MACH_O_X86_64_SUBTRACTOR32, 0, 2, 32, FALSE, 0,
+ complain_overflow_bitfield,
+ NULL, "SUBTRACTOR32",
+ FALSE, 0xffffffff, 0xffffffff, FALSE),
+ HOWTO(BFD_RELOC_MACH_O_X86_64_SUBTRACTOR64, 0, 4, 64, FALSE, 0,
+ complain_overflow_bitfield,
+ NULL, "SUBTRACTOR64",
+ FALSE, MINUS_ONE, MINUS_ONE, FALSE),
+ HOWTO(BFD_RELOC_MACH_O_X86_64_GOT, 0, 2, 32, TRUE, 0,
+ complain_overflow_bitfield,
+ NULL, "GOT",
+ FALSE, 0xffffffff, 0xffffffff, TRUE),
+ HOWTO(BFD_RELOC_MACH_O_X86_64_BRANCH8, 0, 0, 8, TRUE, 0,
+ complain_overflow_bitfield,
+ NULL, "BRANCH8",
+ FALSE, 0xff, 0xff, TRUE),
+};
+
+static bfd_boolean
+bfd_mach_o_x86_64_swap_reloc_in (arelent *res, bfd_mach_o_reloc_info *reloc)
+{
+ /* On x86-64, scattered relocs are not used. */
+ if (reloc->r_scattered)
+ return FALSE;
+
+ switch (reloc->r_type)
+ {
+ case BFD_MACH_O_X86_64_RELOC_UNSIGNED:
+ if (reloc->r_pcrel)
+ return FALSE;
+ switch (reloc->r_length)
+ {
+ case 2:
+ res->howto = &x86_64_howto_table[1];
+ return TRUE;
+ case 3:
+ res->howto = &x86_64_howto_table[0];
+ return TRUE;
+ default:
+ return FALSE;
+ }
+ case BFD_MACH_O_X86_64_RELOC_SIGNED:
+ if (reloc->r_length == 2 && reloc->r_pcrel)
+ {
+ res->howto = &x86_64_howto_table[2];
+ return TRUE;
+ }
+ break;
+ case BFD_MACH_O_X86_64_RELOC_BRANCH:
+ if (!reloc->r_pcrel)
+ return FALSE;
+ switch (reloc->r_length)
+ {
+ case 2:
+ res->howto = &x86_64_howto_table[6];
+ return TRUE;
+ default:
+ return FALSE;
+ }
+ break;
+ case BFD_MACH_O_X86_64_RELOC_GOT_LOAD:
+ if (reloc->r_length == 2 && reloc->r_pcrel && reloc->r_extern)
+ {
+ res->howto = &x86_64_howto_table[7];
+ return TRUE;
+ }
+ break;
+ case BFD_MACH_O_X86_64_RELOC_GOT:
+ if (reloc->r_length == 2 && reloc->r_pcrel && reloc->r_extern)
+ {
+ res->howto = &x86_64_howto_table[10];
+ return TRUE;
+ }
+ break;
+ case BFD_MACH_O_X86_64_RELOC_SUBTRACTOR:
+ if (reloc->r_pcrel)
+ return FALSE;
+ switch (reloc->r_length)
+ {
+ case 2:
+ res->howto = &x86_64_howto_table[8];
+ return TRUE;
+ case 3:
+ res->howto = &x86_64_howto_table[9];
+ return TRUE;
+ default:
+ return FALSE;
+ }
+ break;
+ case BFD_MACH_O_X86_64_RELOC_SIGNED_1:
+ if (reloc->r_length == 2 && reloc->r_pcrel)
+ {
+ res->howto = &x86_64_howto_table[3];
+ return TRUE;
+ }
+ break;
+ case BFD_MACH_O_X86_64_RELOC_SIGNED_2:
+ if (reloc->r_length == 2 && reloc->r_pcrel)
+ {
+ res->howto = &x86_64_howto_table[4];
+ return TRUE;
+ }
+ break;
+ case BFD_MACH_O_X86_64_RELOC_SIGNED_4:
+ if (reloc->r_length == 2 && reloc->r_pcrel)
+ {
+ res->howto = &x86_64_howto_table[5];
+ return TRUE;
+ }
+ break;
+ default:
+ return FALSE;
+ }
+ return FALSE;
+}
+
+static bfd_boolean
+bfd_mach_o_x86_64_swap_reloc_out (arelent *rel, bfd_mach_o_reloc_info *rinfo)
+{
+ rinfo->r_address = rel->address;
+ switch (rel->howto->type)
+ {
+ case BFD_RELOC_64:
+ rinfo->r_scattered = 0;
+ rinfo->r_type = BFD_MACH_O_X86_64_RELOC_UNSIGNED;
+ rinfo->r_pcrel = 0;
+ rinfo->r_length = rel->howto->size; /* Correct in practice. */
+ if ((*rel->sym_ptr_ptr)->flags & BSF_SECTION_SYM)
+ {
+ rinfo->r_extern = 0;
+ rinfo->r_value = (*rel->sym_ptr_ptr)->section->target_index;
+ }
+ else
+ {
+ rinfo->r_extern = 1;
+ rinfo->r_value = (*rel->sym_ptr_ptr)->udata.i;
+ }
+ break;
+ default:
+ return FALSE;
+ }
+ return TRUE;
+}
+
+static reloc_howto_type *
+bfd_mach_o_x86_64_bfd_reloc_type_lookup (bfd *abfd ATTRIBUTE_UNUSED,
+ bfd_reloc_code_real_type code)
+{
+ unsigned int i;
+
+ for (i = 0;
+ i < sizeof (x86_64_howto_table) / sizeof (*x86_64_howto_table);
+ i++)
+ if (code == x86_64_howto_table[i].type)
+ return &x86_64_howto_table[i];
+ return NULL;
+}
+
+static reloc_howto_type *
+bfd_mach_o_x86_64_bfd_reloc_name_lookup (bfd *abfd ATTRIBUTE_UNUSED,
+ const char *name ATTRIBUTE_UNUSED)
+{
+ return NULL;
+}
+
+#define bfd_mach_o_swap_reloc_in bfd_mach_o_x86_64_swap_reloc_in
+#define bfd_mach_o_swap_reloc_out bfd_mach_o_x86_64_swap_reloc_out
+
+#define bfd_mach_o_bfd_reloc_type_lookup bfd_mach_o_x86_64_bfd_reloc_type_lookup
+#define bfd_mach_o_bfd_reloc_name_lookup bfd_mach_o_x86_64_bfd_reloc_name_lookup
+#define bfd_mach_o_print_thread NULL
+
+#define TARGET_NAME mach_o_x86_64_vec
+#define TARGET_STRING "mach-o-x86-64"
+#define TARGET_ARCHITECTURE bfd_arch_i386
+#define TARGET_BIG_ENDIAN 0
+#define TARGET_ARCHIVE 0
+#include "mach-o-target.c"
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