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authorTristan Gingold <gingold@adacore.com>2015-11-20 11:33:33 +0100
committerTristan Gingold <gingold@adacore.com>2015-11-20 14:53:06 +0100
commitf075eb5e6b0dd850304f78cf4d5c94df7b44c7a3 (patch)
tree2bb81dc6550084bc89b41de86543f36d2ad1c450 /bfd/mach-o-arm.c
parent11b8aeb88174dd67ff8b7c58377e8ef94ccf274e (diff)
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binutils: add support for arm-*-darwin and aarch64-*-darwin.
Currently only in bfd and binutils. ChangeLog/ * configure.ac: Add aarch64-*-darwin* and arm-*-darwin*. * configure: Regenerate. bfd/ChangeLog/ * targets.c (aarch64_mach_o_vec, arm_mach_o_vec): Declare. (_bfd_target_vector): Add new vectors. * reloc.c (BFD_RELOC_MACH_O_SUBTRACTOR32) (BFD_RELOC_MACH_O_SUBTRACTOR64, BFD_RELOC_MACH_O_ARM64_ADDEND) (BFD_RELOC_MACH_O_ARM64_GOT_LOAD_PAGE21) (BFD_RELOC_MACH_O_ARM64_GOT_LOAD_PAGEOFF12) (BFD_RELOC_MACH_O_ARM64_POINTER_TO_GOT): New relocations. (BFD_RELOC_MACH_O_X86_64_SUBTRACTOR32) (BFD_RELOC_MACH_O_X86_64_SUBTRACTOR64): Remove. * mach-o-x86-64.c (bfd_mach_o_x86_64_swap_reloc_out): Change name of subtractor relocations. * config.bfd: Handle aarch64-*-darwin*, arm-*-darwin*. * Makefile.am (BFD32_BACKENDS): Add mach-o-arm.lo. (BFD32_BACKENDS_CFILES): Add mach-o-arm.c. (BFD64_BACKENDS): Add mach-o-aarch64.lo. (BFD64_BACKENDS_CFILES): Add mach-o-aarch64.c. * configure.ac: Handle aarch64_mach_o_vec and arm_mach_o_vec. * mach-o-aarch64.c: New file. * mach-o-arm.c: New file. * Makefile.in: Regenerate. * bfd-in2.h: Regenerate. * configure: Regenerate. * libbfd.h: Regenerate.
Diffstat (limited to 'bfd/mach-o-arm.c')
-rw-r--r--bfd/mach-o-arm.c326
1 files changed, 326 insertions, 0 deletions
diff --git a/bfd/mach-o-arm.c b/bfd/mach-o-arm.c
new file mode 100644
index 0000000..b7c14df
--- /dev/null
+++ b/bfd/mach-o-arm.c
@@ -0,0 +1,326 @@
+/* ARM Mach-O support for BFD.
+ Copyright (C) 2015 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"
+#include "mach-o/arm.h"
+
+#define bfd_mach_o_object_p bfd_mach_o_arm_object_p
+#define bfd_mach_o_core_p bfd_mach_o_arm_core_p
+#define bfd_mach_o_mkobject bfd_mach_o_arm_mkobject
+
+#define bfd_mach_o_canonicalize_one_reloc bfd_mach_o_arm_canonicalize_one_reloc
+#define bfd_mach_o_swap_reloc_out NULL
+#define bfd_mach_o_bfd_reloc_type_lookup bfd_mach_o_arm_bfd_reloc_type_lookup
+#define bfd_mach_o_bfd_reloc_name_lookup bfd_mach_o_arm_bfd_reloc_name_lookup
+
+#define bfd_mach_o_print_thread NULL
+#define bfd_mach_o_tgt_seg_table NULL
+#define bfd_mach_o_section_type_valid_for_tgt NULL
+
+static const bfd_target *
+bfd_mach_o_arm_object_p (bfd *abfd)
+{
+ return bfd_mach_o_header_p (abfd, 0, 0, BFD_MACH_O_CPU_TYPE_ARM);
+}
+
+static const bfd_target *
+bfd_mach_o_arm_core_p (bfd *abfd)
+{
+ return bfd_mach_o_header_p (abfd, 0,
+ BFD_MACH_O_MH_CORE, BFD_MACH_O_CPU_TYPE_ARM);
+}
+
+static bfd_boolean
+bfd_mach_o_arm_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_ARM;
+ mdata->header.cpusubtype = BFD_MACH_O_CPU_SUBTYPE_ARM_ALL;
+ mdata->header.byteorder = BFD_ENDIAN_LITTLE;
+ mdata->header.version = 1;
+
+ return TRUE;
+}
+
+static reloc_howto_type arm_howto_table[]=
+{
+ /* 0 */
+ HOWTO (BFD_RELOC_32, 0, 2, 32, FALSE, 0,
+ complain_overflow_bitfield,
+ NULL, "32",
+ FALSE, 0xffffffff, 0xffffffff, FALSE),
+ HOWTO (BFD_RELOC_16, 0, 1, 16, FALSE, 0,
+ complain_overflow_bitfield,
+ NULL, "16",
+ FALSE, 0xffff, 0xffff, FALSE),
+ HOWTO (BFD_RELOC_8, 0, 0, 8, FALSE, 0,
+ complain_overflow_bitfield,
+ NULL, "8",
+ FALSE, 0xff, 0xff, FALSE),
+ HOWTO (BFD_RELOC_32_PCREL, 0, 2, 32, TRUE, 0,
+ complain_overflow_bitfield,
+ NULL, "DISP32",
+ FALSE, 0xffffffff, 0xffffffff, TRUE),
+ /* 4 */
+ HOWTO (BFD_RELOC_16_PCREL, 0, 1, 16, TRUE, 0,
+ complain_overflow_bitfield,
+ NULL, "DISP16",
+ FALSE, 0xffff, 0xffff, TRUE),
+ HOWTO (BFD_RELOC_MACH_O_SECTDIFF, 0, 2, 32, FALSE, 0,
+ complain_overflow_bitfield,
+ NULL, "SECTDIFF_32",
+ FALSE, 0xffffffff, 0xffffffff, FALSE),
+ HOWTO (BFD_RELOC_MACH_O_LOCAL_SECTDIFF, 0, 2, 32, FALSE, 0,
+ complain_overflow_bitfield,
+ NULL, "LSECTDIFF_32",
+ FALSE, 0xffffffff, 0xffffffff, FALSE),
+ HOWTO (BFD_RELOC_MACH_O_PAIR, 0, 2, 32, FALSE, 0,
+ complain_overflow_bitfield,
+ NULL, "PAIR_32",
+ FALSE, 0xffffffff, 0xffffffff, FALSE),
+ /* 8 */
+ HOWTO (BFD_RELOC_MACH_O_SECTDIFF, 0, 1, 16, FALSE, 0,
+ complain_overflow_bitfield,
+ NULL, "SECTDIFF_16",
+ FALSE, 0xffff, 0xffff, FALSE),
+ HOWTO (BFD_RELOC_MACH_O_LOCAL_SECTDIFF, 0, 1, 16, FALSE, 0,
+ complain_overflow_bitfield,
+ NULL, "LSECTDIFF_16",
+ FALSE, 0xffff, 0xffff, FALSE),
+ HOWTO (BFD_RELOC_MACH_O_PAIR, 0, 1, 16, FALSE, 0,
+ complain_overflow_bitfield,
+ NULL, "PAIR_16",
+ FALSE, 0xffff, 0xffff, FALSE),
+ HOWTO (BFD_RELOC_ARM_PCREL_CALL, 2, 2, 24, TRUE, 0,
+ complain_overflow_signed,
+ NULL, "BR24",
+ FALSE, 0x00ffffff, 0x00ffffff, TRUE),
+ /* 12 */
+ HOWTO (BFD_RELOC_ARM_MOVW, 0, 2, 16, FALSE, 0,
+ complain_overflow_dont,
+ NULL, "MOVW",
+ FALSE, 0x000f0fff, 0x000f0fff, FALSE),
+ HOWTO (BFD_RELOC_MACH_O_PAIR, 0, 2, 16, FALSE, 0,
+ complain_overflow_bitfield,
+ NULL, "PAIR_W",
+ FALSE, 0x000f0fff, 0x000f0fff, FALSE),
+ HOWTO (BFD_RELOC_ARM_MOVT, 0, 2, 16, FALSE, 0,
+ complain_overflow_bitfield,
+ NULL, "MOVT",
+ FALSE, 0x000f0fff, 0x000f0fff, FALSE),
+ HOWTO (BFD_RELOC_MACH_O_PAIR, 0, 2, 16, FALSE, 0,
+ complain_overflow_bitfield,
+ NULL, "PAIR_T",
+ FALSE, 0x000f0fff, 0x000f0fff, FALSE),
+ /* 16 */
+ HOWTO (BFD_RELOC_THUMB_PCREL_BLX, 2, 2, 24, TRUE, 0,
+ complain_overflow_signed,
+ NULL, "TBR22",
+ FALSE, 0x07ff2fff, 0x07ff2fff, TRUE)
+};
+
+static bfd_boolean
+bfd_mach_o_arm_canonicalize_one_reloc (bfd *abfd,
+ struct mach_o_reloc_info_external *raw,
+ arelent *res, asymbol **syms)
+ {
+ bfd_mach_o_reloc_info reloc;
+
+ if (!bfd_mach_o_pre_canonicalize_one_reloc (abfd, raw, &reloc, res, syms))
+ return FALSE;
+
+ if (reloc.r_scattered)
+ {
+ switch (reloc.r_type)
+ {
+ case BFD_MACH_O_ARM_RELOC_PAIR:
+ if (reloc.r_length == 2)
+ {
+ res->howto = &arm_howto_table[7];
+ res->address = res[-1].address;
+ return TRUE;
+ }
+ else if (reloc.r_length == 1)
+ {
+ res->howto = &arm_howto_table[10];
+ res->address = res[-1].address;
+ return TRUE;
+ }
+ return FALSE;
+ case BFD_MACH_O_ARM_RELOC_SECTDIFF:
+ if (reloc.r_length == 2)
+ {
+ res->howto = &arm_howto_table[5];
+ return TRUE;
+ }
+ else if (reloc.r_length == 1)
+ {
+ res->howto = &arm_howto_table[8];
+ return TRUE;
+ }
+ return FALSE;
+ case BFD_MACH_O_ARM_RELOC_LOCAL_SECTDIFF:
+ if (reloc.r_length == 2)
+ {
+ res->howto = &arm_howto_table[6];
+ return TRUE;
+ }
+ else if (reloc.r_length == 1)
+ {
+ res->howto = &arm_howto_table[9];
+ return TRUE;
+ }
+ return FALSE;
+ case BFD_MACH_O_ARM_RELOC_HALF_SECTDIFF:
+ switch (reloc.r_length)
+ {
+ case 2: /* :lower16: for movw arm. */
+ res->howto = &arm_howto_table[12];
+ return TRUE;
+ case 3: /* :upper16: for movt arm. */
+ res->howto = &arm_howto_table[14];
+ return TRUE;
+ }
+ return FALSE;
+ default:
+ return FALSE;
+ }
+ }
+ else
+ {
+ switch (reloc.r_type)
+ {
+ case BFD_MACH_O_ARM_RELOC_VANILLA:
+ switch ((reloc.r_length << 1) | reloc.r_pcrel)
+ {
+ case 0: /* len = 0, pcrel = 0 */
+ res->howto = &arm_howto_table[2];
+ return TRUE;
+ case 2: /* len = 1, pcrel = 0 */
+ res->howto = &arm_howto_table[1];
+ return TRUE;
+ case 3: /* len = 1, pcrel = 1 */
+ res->howto = &arm_howto_table[4];
+ return TRUE;
+ case 4: /* len = 2, pcrel = 0 */
+ res->howto = &arm_howto_table[0];
+ return TRUE;
+ case 5: /* len = 2, pcrel = 1 */
+ res->howto = &arm_howto_table[3];
+ return TRUE;
+ default:
+ return FALSE;
+ }
+ break;
+ case BFD_MACH_O_ARM_RELOC_BR24:
+ if (reloc.r_length == 2 && reloc.r_pcrel == 1)
+ {
+ res->howto = &arm_howto_table[11];
+ return TRUE;
+ }
+ else
+ return FALSE;
+ break;
+ case BFD_MACH_O_THUMB_RELOC_BR22:
+ if (reloc.r_length == 2 && reloc.r_pcrel == 1)
+ {
+ res->howto = &arm_howto_table[16];
+ return TRUE;
+ }
+ else
+ return FALSE;
+ break;
+ case BFD_MACH_O_ARM_RELOC_HALF:
+ if (reloc.r_pcrel == 0)
+ switch (reloc.r_length)
+ {
+ case 0: /* :lower16: for movw arm. */
+ res->howto = &arm_howto_table[12];
+ return TRUE;
+ case 1: /* :upper16: for movt arm. */
+ res->howto = &arm_howto_table[14];
+ return TRUE;
+ }
+ return FALSE;
+ case BFD_MACH_O_ARM_RELOC_PAIR:
+ if (res[-1].howto == &arm_howto_table[12]
+ && reloc.r_length == 0)
+ {
+ /* Pair for :lower16: of movw arm. */
+ res->howto = &arm_howto_table[13];
+ /* This reloc contains the other half in its r_address field. */
+ res[-1].addend += (res->address & 0xffff) << 16;
+ res->address = res[-1].address;
+ return TRUE;
+ }
+ else if (res[-1].howto == &arm_howto_table[14]
+ && reloc.r_length == 1)
+ {
+ /* Pair for :upper16: of movt arm. */
+ res->howto = &arm_howto_table[15];
+ /* This reloc contains the other half in its r_address field. */
+ res[-1].addend += res->address & 0xffff;
+ res->address = res[-1].address;
+ return TRUE;
+ }
+ return FALSE;
+ default:
+ return FALSE;
+ }
+ }
+}
+
+static reloc_howto_type *
+bfd_mach_o_arm_bfd_reloc_type_lookup (bfd *abfd ATTRIBUTE_UNUSED,
+ bfd_reloc_code_real_type code)
+{
+ unsigned int i;
+
+ for (i = 0; i < sizeof (arm_howto_table) / sizeof (*arm_howto_table); i++)
+ if (code == arm_howto_table[i].type)
+ return &arm_howto_table[i];
+ return NULL;
+}
+
+static reloc_howto_type *
+bfd_mach_o_arm_bfd_reloc_name_lookup (bfd *abfd ATTRIBUTE_UNUSED,
+ const char *name ATTRIBUTE_UNUSED)
+{
+ return NULL;
+}
+
+#define TARGET_NAME arm_mach_o_vec
+#define TARGET_STRING "mach-o-arm"
+#define TARGET_ARCHITECTURE bfd_arch_arm
+#define TARGET_PAGESIZE 4096
+#define TARGET_BIG_ENDIAN 0
+#define TARGET_ARCHIVE 0
+#define TARGET_PRIORITY 0
+#include "mach-o-target.c"