--- /dev/null
+/* PowerPC-specific support for 32-bit ELF
+ Copyright 1994, 1995 Free Software Foundation, Inc.
+ Written by Ian Lance Taylor, Cygnus Support.
+
+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 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. */
+
+/* This file is based on a preliminary PowerPC ELF ABI. The
+ information may not match the final PowerPC ELF ABI. It includes
+ suggestions from the in-progress Embedded PowerPC ABI, and that
+ information may also not match. */
+
+#include "bfd.h"
+#include "sysdep.h"
+#include "libbfd.h"
+#include "libelf.h"
+
+static bfd_reloc_status_type ppc_elf_unsupported_reloc
+ PARAMS ((bfd *, arelent *, asymbol *, PTR, asection *, bfd *, char **));
+static bfd_reloc_status_type ppc_elf_addr16_ha_reloc
+ PARAMS ((bfd *, arelent *, asymbol *, PTR, asection *, bfd *, char **));
+static bfd_reloc_status_type ppc_elf_got16_reloc
+ PARAMS ((bfd *, arelent *, asymbol *, PTR, asection *, bfd *, char **));
+static reloc_howto_type *bfd_elf32_bfd_reloc_type_lookup
+ PARAMS ((bfd *abfd, bfd_reloc_code_real_type code));
+static void powerpc_info_to_howto
+ PARAMS ((bfd *abfd, arelent *cache_ptr, Elf32_Internal_Rela *dst));
+
+#define USE_RELA
+
+enum reloc_type
+{
+ R_PPC_NONE = 0, /* 0 */
+ R_PPC_ADDR32, /* 1 */
+ R_PPC_ADDR24, /* 2 */
+ R_PPC_ADDR16, /* 3 */
+ R_PPC_ADDR16_LO, /* 4 */
+ R_PPC_ADDR16_HI, /* 5 */
+ R_PPC_ADDR16_HA, /* 6 */
+ R_PPC_ADDR14, /* 7 */
+ R_PPC_ADDR14_BRTAKEN, /* 8 */
+ R_PPC_ADDR14_BRNTAKEN, /* 9 */
+ R_PPC_REL24, /* 10 */
+ R_PPC_REL14, /* 11 */
+ R_PPC_REL14_BRTAKEN, /* 12 */
+ R_PPC_REL14_BRNTAKEN, /* 13 */
+ R_PPC_GOT16, /* 14 */
+ R_PPC_GOT16_LO, /* 15 */
+ R_PPC_GOT16_HI, /* 16 */
+ R_PPC_GOT16_HA, /* 17 */
+ R_PPC_PLT24, /* 18 */
+ R_PPC_COPY, /* 19 */
+ R_PPC_GLOB_DAT, /* 20 -- not in final System V spec */
+ R_PPC_JMP_SLOT, /* 21 */
+ R_PPC_RELATIVE, /* 22 */
+ R_PPC_LOCAL24PC, /* 23 */
+ R_PPC_UADDR32, /* 24 */
+ R_PPC_UADDR16, /* 25 */
+ R_PPC_REL32, /* 26 */
+ R_PPC_PLT32, /* 27 */
+ R_PPC_PLTREL32, /* 28 */
+ R_PPC_PLT16_LO, /* 29 */
+ R_PPC_PLT16_HI, /* 30 */
+ R_PPC_PLT16_HA, /* 31 */
+ R_PPC_SDAREL, /* 32 */
+
+ /* Relocations added by Sun. */
+ R_PPC_SECTOFF, /* 33 */
+ R_PPC_SECTOFF_LO, /* 34 */
+ R_PPC_SECTOFF_HI, /* 35 */
+ R_PPC_SECTOFF_HA, /* 36 */
+
+ /* The remaining relocs are from the Embedded ELF ABI, and are not
+ in the SVR4 ELF ABI. */
+ R_PPC_EMB_NADDR32 = 101, /* 101 */
+ R_PPC_EMB_NADDR16, /* 102 */
+ R_PPC_EMB_NADDR16_LO, /* 103 */
+ R_PPC_EMB_NADDR16_HI, /* 104 */
+ R_PPC_EMB_NADDR16_HA, /* 105 */
+ R_PPC_EMB_SDAI16, /* 106 */
+ R_PPC_EMB_SDA2I16, /* 107 */
+ R_PPC_EMB_SDA2REL, /* 108 */
+ R_PPC_EMB_SDA21, /* 109 */
+ R_PPC_EMB_MRKREF, /* 110 */
+ R_PPC_EMB_RELSEC16, /* 111 */
+ R_PPC_EMB_RELST_LO, /* 112 */
+ R_PPC_EMB_RELST_HI, /* 113 */
+ R_PPC_EMB_RELST_HA, /* 114 */
+ R_PPC_EMB_BIT_FLD, /* 115 */
+ R_PPC_EMB_RELSDA, /* 116 */
+ R_PPC_max
+};
+
+static reloc_howto_type elf_powerpc_howto_table[] =
+{
+ /* This reloc does nothing. */
+ HOWTO (R_PPC_NONE, /* type */
+ 0, /* rightshift */
+ 2, /* size (0 = byte, 1 = short, 2 = long) */
+ 32, /* bitsize */
+ false, /* pc_relative */
+ 0, /* bitpos */
+ complain_overflow_bitfield, /* complain_on_overflow */
+ bfd_elf_generic_reloc, /* special_function */
+ "R_PPC_NONE", /* name */
+ false, /* partial_inplace */
+ 0, /* src_mask */
+ 0, /* dst_mask */
+ false), /* pcrel_offset */
+
+ /* A standard 32 bit relocation. */
+ HOWTO (R_PPC_ADDR32, /* type */
+ 0, /* rightshift */
+ 2, /* size (0 = byte, 1 = short, 2 = long) */
+ 32, /* bitsize */
+ false, /* pc_relative */
+ 0, /* bitpos */
+ complain_overflow_bitfield, /* complain_on_overflow */
+ bfd_elf_generic_reloc, /* special_function */
+ "R_PPC_ADDR32", /* name */
+ false, /* partial_inplace */
+ 0, /* src_mask */
+ 0xffffffff, /* dst_mask */
+ false), /* pcrel_offset */
+
+ /* An absolute 26 bit branch; the lower two bits must be zero.
+ FIXME: we don't check that, we just clear them. */
+ HOWTO (R_PPC_ADDR24, /* type */
+ 0, /* rightshift */
+ 2, /* size (0 = byte, 1 = short, 2 = long) */
+ 26, /* bitsize */
+ false, /* pc_relative */
+ 0, /* bitpos */
+ complain_overflow_bitfield, /* complain_on_overflow */
+ bfd_elf_generic_reloc, /* special_function */
+ "R_PPC_ADDR24", /* name */
+ false, /* partial_inplace */
+ 0, /* src_mask */
+ 0x3fffffc, /* dst_mask */
+ false), /* pcrel_offset */
+
+ /* A standard 16 bit relocation. */
+ HOWTO (R_PPC_ADDR16, /* type */
+ 0, /* rightshift */
+ 1, /* size (0 = byte, 1 = short, 2 = long) */
+ 16, /* bitsize */
+ false, /* pc_relative */
+ 0, /* bitpos */
+ complain_overflow_bitfield, /* complain_on_overflow */
+ bfd_elf_generic_reloc, /* special_function */
+ "R_PPC_ADDR16", /* name */
+ false, /* partial_inplace */
+ 0, /* src_mask */
+ 0xffff, /* dst_mask */
+ false), /* pcrel_offset */
+
+ /* A 16 bit relocation without overflow. */
+ HOWTO (R_PPC_ADDR16_LO, /* type */
+ 0, /* rightshift */
+ 1, /* size (0 = byte, 1 = short, 2 = long) */
+ 16, /* bitsize */
+ false, /* pc_relative */
+ 0, /* bitpos */
+ complain_overflow_dont,/* complain_on_overflow */
+ bfd_elf_generic_reloc, /* special_function */
+ "R_PPC_ADDR16_LO", /* name */
+ false, /* partial_inplace */
+ 0, /* src_mask */
+ 0xffff, /* dst_mask */
+ false), /* pcrel_offset */
+
+ /* The high order 16 bits of an address. */
+ HOWTO (R_PPC_ADDR16_HI, /* type */
+ 16, /* rightshift */
+ 1, /* size (0 = byte, 1 = short, 2 = long) */
+ 16, /* bitsize */
+ false, /* pc_relative */
+ 0, /* bitpos */
+ complain_overflow_dont, /* complain_on_overflow */
+ bfd_elf_generic_reloc, /* special_function */
+ "R_PPC_ADDR16_HI", /* name */
+ false, /* partial_inplace */
+ 0, /* src_mask */
+ 0xffff, /* dst_mask */
+ false), /* pcrel_offset */
+
+ /* The high order 16 bits of an address, plus 1 if the contents of
+ the low 16 bits, treated as a signed number, is negative. */
+ HOWTO (R_PPC_ADDR16_HA, /* type */
+ 16, /* rightshift */
+ 1, /* size (0 = byte, 1 = short, 2 = long) */
+ 16, /* bitsize */
+ false, /* pc_relative */
+ 0, /* bitpos */
+ complain_overflow_dont, /* complain_on_overflow */
+ ppc_elf_addr16_ha_reloc, /* special_function */
+ "R_PPC_ADDR16_HA", /* name */
+ false, /* partial_inplace */
+ 0, /* src_mask */
+ 0xffff, /* dst_mask */
+ false), /* pcrel_offset */
+
+ /* An absolute 16 bit branch; the lower two bits must be zero.
+ FIXME: we don't check that, we just clear them. */
+ HOWTO (R_PPC_ADDR14, /* type */
+ 0, /* rightshift */
+ 2, /* size (0 = byte, 1 = short, 2 = long) */
+ 16, /* bitsize */
+ false, /* pc_relative */
+ 0, /* bitpos */
+ complain_overflow_bitfield, /* complain_on_overflow */
+ bfd_elf_generic_reloc, /* special_function */
+ "R_PPC_ADDR14", /* name */
+ false, /* partial_inplace */
+ 0, /* src_mask */
+ 0xfffc, /* dst_mask */
+ false), /* pcrel_offset */
+
+ /* An absolute 16 bit branch, for which bit 10 should be set to
+ indicate that the branch is expected to be taken. The lower two
+ bits must be zero. */
+ HOWTO (R_PPC_ADDR14_BRTAKEN, /* type */
+ 0, /* rightshift */
+ 2, /* size (0 = byte, 1 = short, 2 = long) */
+ 16, /* bitsize */
+ false, /* pc_relative */
+ 0, /* bitpos */
+ complain_overflow_bitfield, /* complain_on_overflow */
+ ppc_elf_unsupported_reloc, /* special_function */
+ "R_PPC_ADDR14_BRTAKEN",/* name */
+ false, /* partial_inplace */
+ 0, /* src_mask */
+ 0xfffc, /* dst_mask */
+ false), /* pcrel_offset */
+
+ /* An absolute 16 bit branch, for which bit 10 should be set to
+ indicate that the branch is not expected to be taken. The lower
+ two bits must be zero. */
+ HOWTO (R_PPC_ADDR14_BRNTAKEN, /* type */
+ 0, /* rightshift */
+ 2, /* size (0 = byte, 1 = short, 2 = long) */
+ 16, /* bitsize */
+ false, /* pc_relative */
+ 0, /* bitpos */
+ complain_overflow_bitfield, /* complain_on_overflow */
+ ppc_elf_unsupported_reloc, /* special_function */
+ "R_PPC_ADDR14_BRNTAKEN",/* name */
+ false, /* partial_inplace */
+ 0, /* src_mask */
+ 0xfffc, /* dst_mask */
+ false), /* pcrel_offset */
+
+ /* A relative 26 bit branch; the lower two bits must be zero. */
+ HOWTO (R_PPC_REL24, /* type */
+ 0, /* rightshift */
+ 2, /* size (0 = byte, 1 = short, 2 = long) */
+ 26, /* bitsize */
+ true, /* pc_relative */
+ 0, /* bitpos */
+ complain_overflow_signed, /* complain_on_overflow */
+ bfd_elf_generic_reloc, /* special_function */
+ "R_PPC_REL24", /* name */
+ false, /* partial_inplace */
+ 0, /* src_mask */
+ 0x3fffffc, /* dst_mask */
+ true), /* pcrel_offset */
+
+ /* A relative 16 bit branch; the lower two bits must be zero. */
+ HOWTO (R_PPC_REL14, /* type */
+ 0, /* rightshift */
+ 2, /* size (0 = byte, 1 = short, 2 = long) */
+ 16, /* bitsize */
+ true, /* pc_relative */
+ 0, /* bitpos */
+ complain_overflow_signed, /* complain_on_overflow */
+ bfd_elf_generic_reloc, /* special_function */
+ "R_PPC_REL14", /* name */
+ false, /* partial_inplace */
+ 0, /* src_mask */
+ 0xfffc, /* dst_mask */
+ true), /* pcrel_offset */
+
+ /* A relative 16 bit branch. Bit 10 should be set to indicate that
+ the branch is expected to be taken. The lower two bits must be
+ zero. */
+ HOWTO (R_PPC_REL14_BRTAKEN, /* type */
+ 0, /* rightshift */
+ 2, /* size (0 = byte, 1 = short, 2 = long) */
+ 16, /* bitsize */
+ false, /* pc_relative */
+ 0, /* bitpos */
+ complain_overflow_signed, /* complain_on_overflow */
+ ppc_elf_unsupported_reloc, /* special_function */
+ "R_PPC_REL14_BRTAKEN", /* name */
+ false, /* partial_inplace */
+ 0, /* src_mask */
+ 0xfffc, /* dst_mask */
+ true), /* pcrel_offset */
+
+ /* A relative 16 bit branch. Bit 10 should be set to indicate that
+ the branch is not expected to be taken. The lower two bits must
+ be zero. */
+ HOWTO (R_PPC_REL14_BRNTAKEN, /* type */
+ 0, /* rightshift */
+ 2, /* size (0 = byte, 1 = short, 2 = long) */
+ 16, /* bitsize */
+ false, /* pc_relative */
+ 0, /* bitpos */
+ complain_overflow_signed, /* complain_on_overflow */
+ ppc_elf_unsupported_reloc, /* special_function */
+ "R_PPC_REL14_BRNTAKEN",/* name */
+ false, /* partial_inplace */
+ 0, /* src_mask */
+ 0xfffc, /* dst_mask */
+ true), /* pcrel_offset */
+
+ /* Like R_PPC_ADDR16, but referring to the GOT table entry for the
+ symbol. */
+ HOWTO (R_PPC_GOT16, /* type */
+ 0, /* rightshift */
+ 1, /* size (0 = byte, 1 = short, 2 = long) */
+ 16, /* bitsize */
+ false, /* pc_relative */
+ 0, /* bitpos */
+ complain_overflow_bitfield, /* complain_on_overflow */
+ ppc_elf_got16_reloc, /* special_function */
+ "R_PPC_GOT16", /* name */
+ false, /* partial_inplace */
+ 0, /* src_mask */
+ 0xffff, /* dst_mask */
+ false), /* pcrel_offset */
+
+ /* Like R_PPC_ADDR16_LO, but referring to the GOT table entry for
+ the symbol. */
+ HOWTO (R_PPC_GOT16_LO, /* type */
+ 0, /* rightshift */
+ 1, /* size (0 = byte, 1 = short, 2 = long) */
+ 16, /* bitsize */
+ false, /* pc_relative */
+ 0, /* bitpos */
+ complain_overflow_bitfield, /* complain_on_overflow */
+ ppc_elf_got16_reloc, /* special_function */
+ "R_PPC_GOT16_LO", /* name */
+ false, /* partial_inplace */
+ 0, /* src_mask */
+ 0xffff, /* dst_mask */
+ false), /* pcrel_offset */
+
+ /* Like R_PPC_ADDR16_HI, but referring to the GOT table entry for
+ the symbol. */
+ HOWTO (R_PPC_GOT16_HI, /* type */
+ 16, /* rightshift */
+ 1, /* size (0 = byte, 1 = short, 2 = long) */
+ 16, /* bitsize */
+ false, /* pc_relative */
+ 0, /* bitpos */
+ complain_overflow_bitfield, /* complain_on_overflow */
+ ppc_elf_got16_reloc, /* special_function */
+ "R_PPC_GOT16_HI", /* name */
+ false, /* partial_inplace */
+ 0, /* src_mask */
+ 0xffff, /* dst_mask */
+ false), /* pcrel_offset */
+
+ /* Like R_PPC_ADDR16_HA, but referring to the GOT table entry for
+ the symbol. FIXME: Not supported. */
+ HOWTO (R_PPC_GOT16_HA, /* type */
+ 0, /* rightshift */
+ 1, /* size (0 = byte, 1 = short, 2 = long) */
+ 16, /* bitsize */
+ false, /* pc_relative */
+ 0, /* bitpos */
+ complain_overflow_bitfield, /* complain_on_overflow */
+ ppc_elf_unsupported_reloc, /* special_function */
+ "R_PPC_GOT16_HA", /* name */
+ false, /* partial_inplace */
+ 0, /* src_mask */
+ 0xffff, /* dst_mask */
+ false), /* pcrel_offset */
+
+ /* Like R_PPC_REL24, but referring to the procedure linkage table
+ entry for the symbol. FIXME: Not supported. */
+ HOWTO (R_PPC_PLT24, /* type */
+ 0, /* rightshift */
+ 2, /* size (0 = byte, 1 = short, 2 = long) */
+ 26, /* bitsize */
+ true, /* pc_relative */
+ 0, /* bitpos */
+ complain_overflow_signed, /* complain_on_overflow */
+ bfd_elf_generic_reloc, /* special_function */
+ "R_PPC_PLT24", /* name */
+ false, /* partial_inplace */
+ 0, /* src_mask */
+ 0x3fffffc, /* dst_mask */
+ true), /* pcrel_offset */
+
+ /* This is used only by the dynamic linker. The symbol should exist
+ both in the object being run and in some shared library. The
+ dynamic linker copies the data addressed by the symbol from the
+ shared library into the object. I have no idea what the purpose
+ of this is. */
+ HOWTO (R_PPC_COPY, /* type */
+ 0, /* rightshift */
+ 2, /* size (0 = byte, 1 = short, 2 = long) */
+ 32, /* bitsize */
+ false, /* pc_relative */
+ 0, /* bitpos */
+ complain_overflow_bitfield, /* complain_on_overflow */
+ bfd_elf_generic_reloc, /* special_function */
+ "R_PPC_COPY", /* name */
+ false, /* partial_inplace */
+ 0, /* src_mask */
+ 0, /* dst_mask */
+ false), /* pcrel_offset */
+
+ /* Like R_PPC_ADDR32, but used when setting global offset table
+ entries. */
+ HOWTO (R_PPC_GLOB_DAT, /* type */
+ 0, /* rightshift */
+ 2, /* size (0 = byte, 1 = short, 2 = long) */
+ 32, /* bitsize */
+ false, /* pc_relative */
+ 0, /* bitpos */
+ complain_overflow_bitfield, /* complain_on_overflow */
+ bfd_elf_generic_reloc, /* special_function */
+ "R_PPC_GLOB_DAT", /* name */
+ false, /* partial_inplace */
+ 0, /* src_mask */
+ 0xffffffff, /* dst_mask */
+ false), /* pcrel_offset */
+
+ /* Marks a procedure linkage table entry for a symbol. */
+ HOWTO (R_PPC_JMP_SLOT, /* type */
+ 0, /* rightshift */
+ 2, /* size (0 = byte, 1 = short, 2 = long) */
+ 32, /* bitsize */
+ false, /* pc_relative */
+ 0, /* bitpos */
+ complain_overflow_bitfield, /* complain_on_overflow */
+ bfd_elf_generic_reloc, /* special_function */
+ "R_PPC_JMP_SLOT", /* name */
+ false, /* partial_inplace */
+ 0, /* src_mask */
+ 0, /* dst_mask */
+ false), /* pcrel_offset */
+
+ /* Used only by the dynamic linker. When the object is run, this
+ longword is set to the load address of the object, plus the
+ addend. */
+ HOWTO (R_PPC_RELATIVE, /* type */
+ 0, /* rightshift */
+ 2, /* size (0 = byte, 1 = short, 2 = long) */
+ 32, /* bitsize */
+ false, /* pc_relative */
+ 0, /* bitpos */
+ complain_overflow_bitfield, /* complain_on_overflow */
+ bfd_elf_generic_reloc, /* special_function */
+ "R_PPC_RELATIVE", /* name */
+ false, /* partial_inplace */
+ 0, /* src_mask */
+ 0xffffffff, /* dst_mask */
+ false), /* pcrel_offset */
+
+ /* Like R_PPC_REL24, but uses the value of the symbol within the
+ object rather than the final value. Normally used for
+ _GLOBAL_OFFSET_TABLE_. FIXME: Not supported. */
+ HOWTO (R_PPC_LOCAL24PC, /* type */
+ 0, /* rightshift */
+ 2, /* size (0 = byte, 1 = short, 2 = long) */
+ 26, /* bitsize */
+ true, /* pc_relative */
+ 0, /* bitpos */
+ complain_overflow_signed, /* complain_on_overflow */
+ ppc_elf_unsupported_reloc, /* special_function */
+ "R_PPC_LOCAL24PC", /* name */
+ false, /* partial_inplace */
+ 0, /* src_mask */
+ 0x3fffffc, /* dst_mask */
+ true), /* pcrel_offset */
+
+ /* Like R_PPC_ADDR32, but may be unaligned. */
+ HOWTO (R_PPC_UADDR32, /* type */
+ 0, /* rightshift */
+ 2, /* size (0 = byte, 1 = short, 2 = long) */
+ 32, /* bitsize */
+ false, /* pc_relative */
+ 0, /* bitpos */
+ complain_overflow_bitfield, /* complain_on_overflow */
+ bfd_elf_generic_reloc, /* special_function */
+ "R_PPC_UADDR32", /* name */
+ false, /* partial_inplace */
+ 0, /* src_mask */
+ 0xffffffff, /* dst_mask */
+ false), /* pcrel_offset */
+
+ /* Like R_PPC_ADDR16, but may be unaligned. */
+ HOWTO (R_PPC_UADDR16, /* type */
+ 0, /* rightshift */
+ 1, /* size (0 = byte, 1 = short, 2 = long) */
+ 16, /* bitsize */
+ false, /* pc_relative */
+ 0, /* bitpos */
+ complain_overflow_bitfield, /* complain_on_overflow */
+ bfd_elf_generic_reloc, /* special_function */
+ "R_PPC_UADDR16", /* name */
+ false, /* partial_inplace */
+ 0, /* src_mask */
+ 0xffff, /* dst_mask */
+ false), /* pcrel_offset */
+
+ /* 32-bit PC relative */
+ HOWTO (R_PPC_REL32, /* type */
+ 0, /* rightshift */
+ 2, /* size (0 = byte, 1 = short, 2 = long) */
+ 32, /* bitsize */
+ true, /* pc_relative */
+ 0, /* bitpos */
+ complain_overflow_bitfield, /* complain_on_overflow */
+ bfd_elf_generic_reloc, /* special_function */
+ "R_PPC_REL32", /* name */
+ false, /* partial_inplace */
+ 0, /* src_mask */
+ 0xffffffff, /* dst_mask */
+ true), /* pcrel_offset */
+
+ /* 32-bit relocation to the symbol's procedure linkage table.
+ FIXEME: not supported. */
+ HOWTO (R_PPC_PLT32, /* type */
+ 0, /* rightshift */
+ 2, /* size (0 = byte, 1 = short, 2 = long) */
+ 32, /* bitsize */
+ false, /* pc_relative */
+ 0, /* bitpos */
+ complain_overflow_bitfield, /* complain_on_overflow */
+ ppc_elf_unsupported_reloc, /* special_function */
+ "R_PPC_PLT32", /* name */
+ false, /* partial_inplace */
+ 0, /* src_mask */
+ 0, /* dst_mask */
+ false), /* pcrel_offset */
+
+ /* 32-bit PC relative relocation to the symbol's procedure linkage table.
+ FIXEME: not supported. */
+ HOWTO (R_PPC_PLTREL32, /* type */
+ 0, /* rightshift */
+ 2, /* size (0 = byte, 1 = short, 2 = long) */
+ 32, /* bitsize */
+ true, /* pc_relative */
+ 0, /* bitpos */
+ complain_overflow_bitfield, /* complain_on_overflow */
+ ppc_elf_unsupported_reloc, /* special_function */
+ "R_PPC_PLTREL32", /* name */
+ false, /* partial_inplace */
+ 0, /* src_mask */
+ 0, /* dst_mask */
+ true), /* pcrel_offset */
+
+ /* Like R_PPC_ADDR16_LO, but referring to the PLT table entry for
+ the symbol. */
+ HOWTO (R_PPC_PLT16_LO, /* type */
+ 0, /* rightshift */
+ 1, /* size (0 = byte, 1 = short, 2 = long) */
+ 16, /* bitsize */
+ false, /* pc_relative */
+ 0, /* bitpos */
+ complain_overflow_bitfield, /* complain_on_overflow */
+ ppc_elf_unsupported_reloc, /* special_function */
+ "R_PPC_PLT16_LO", /* name */
+ false, /* partial_inplace */
+ 0, /* src_mask */
+ 0xffff, /* dst_mask */
+ false), /* pcrel_offset */
+
+ /* Like R_PPC_ADDR16_HI, but referring to the PLT table entry for
+ the symbol. */
+ HOWTO (R_PPC_PLT16_HI, /* type */
+ 16, /* rightshift */
+ 1, /* size (0 = byte, 1 = short, 2 = long) */
+ 16, /* bitsize */
+ false, /* pc_relative */
+ 0, /* bitpos */
+ complain_overflow_bitfield, /* complain_on_overflow */
+ ppc_elf_unsupported_reloc, /* special_function */
+ "R_PPC_PLT16_HI", /* name */
+ false, /* partial_inplace */
+ 0, /* src_mask */
+ 0xffff, /* dst_mask */
+ false), /* pcrel_offset */
+
+ /* Like R_PPC_ADDR16_HA, but referring to the PLT table entry for
+ the symbol. FIXME: Not supported. */
+ HOWTO (R_PPC_PLT16_HA, /* type */
+ 0, /* rightshift */
+ 1, /* size (0 = byte, 1 = short, 2 = long) */
+ 16, /* bitsize */
+ false, /* pc_relative */
+ 0, /* bitpos */
+ complain_overflow_bitfield, /* complain_on_overflow */
+ ppc_elf_unsupported_reloc, /* special_function */
+ "R_PPC_PLT16_HA", /* name */
+ false, /* partial_inplace */
+ 0, /* src_mask */
+ 0xffff, /* dst_mask */
+ false), /* pcrel_offset */
+
+ /* A sign-extended 16 bit value relative to _SDA_BASE, for use with
+ small data items. */
+ HOWTO (R_PPC_SDAREL, /* type */
+ 0, /* rightshift */
+ 2, /* size (0 = byte, 1 = short, 2 = long) */
+ 16, /* bitsize */
+ false, /* pc_relative */
+ 0, /* bitpos */
+ complain_overflow_bitfield, /* complain_on_overflow */
+ ppc_elf_unsupported_reloc, /* special_function */
+ "R_PPC_SDAREL", /* name */
+ false, /* partial_inplace */
+ 0, /* src_mask */
+ 0xffff, /* dst_mask */
+ false), /* pcrel_offset */
+
+ /* These next 4 relocations were added by Sun. */
+ /* 32-bit section relative relocation. FIXME: not supported. */
+ HOWTO (R_PPC_SECTOFF, /* type */
+ 0, /* rightshift */
+ 2, /* size (0 = byte, 1 = short, 2 = long) */
+ 32, /* bitsize */
+ true, /* pc_relative */
+ 0, /* bitpos */
+ complain_overflow_bitfield, /* complain_on_overflow */
+ ppc_elf_unsupported_reloc, /* special_function */
+ "R_PPC_SECTOFF", /* name */
+ false, /* partial_inplace */
+ 0, /* src_mask */
+ 0, /* dst_mask */
+ true), /* pcrel_offset */
+
+ /* 16-bit lower half section relative relocation. FIXME: not supported. */
+ HOWTO (R_PPC_SECTOFF_LO, /* type */
+ 0, /* rightshift */
+ 1, /* size (0 = byte, 1 = short, 2 = long) */
+ 16, /* bitsize */
+ false, /* pc_relative */
+ 0, /* bitpos */
+ complain_overflow_bitfield, /* complain_on_overflow */
+ ppc_elf_unsupported_reloc, /* special_function */
+ "R_PPC_SECTOFF_LO", /* name */
+ false, /* partial_inplace */
+ 0, /* src_mask */
+ 0xffff, /* dst_mask */
+ false), /* pcrel_offset */
+
+ /* 16-bit upper half section relative relocation. FIXME: not supported. */
+ HOWTO (R_PPC_SECTOFF_HI, /* type */
+ 16, /* rightshift */
+ 1, /* size (0 = byte, 1 = short, 2 = long) */
+ 16, /* bitsize */
+ false, /* pc_relative */
+ 0, /* bitpos */
+ complain_overflow_bitfield, /* complain_on_overflow */
+ ppc_elf_unsupported_reloc, /* special_function */
+ "R_PPC_SECTOFF_HI", /* name */
+ false, /* partial_inplace */
+ 0, /* src_mask */
+ 0xffff, /* dst_mask */
+ false), /* pcrel_offset */
+
+ /* 16-bit upper half adjusted section relative relocation. FIXME: not supported. */
+ HOWTO (R_PPC_SECTOFF_HA, /* type */
+ 0, /* rightshift */
+ 1, /* size (0 = byte, 1 = short, 2 = long) */
+ 16, /* bitsize */
+ false, /* pc_relative */
+ 0, /* bitpos */
+ complain_overflow_bitfield, /* complain_on_overflow */
+ ppc_elf_unsupported_reloc, /* special_function */
+ "R_PPC_SECTOFF_HA", /* name */
+ false, /* partial_inplace */
+ 0, /* src_mask */
+ 0xffff, /* dst_mask */
+ false), /* pcrel_offset */
+
+ /* The remaining relocs are from the Embedded ELF ABI, and are not
+ in the SVR4 ELF ABI. */
+
+ /* 32 bit value resulting from the addend minus the symbol */
+ HOWTO (R_PPC_EMB_NADDR32, /* type */
+ 0, /* rightshift */
+ 2, /* size (0 = byte, 1 = short, 2 = long) */
+ 32, /* bitsize */
+ false, /* pc_relative */
+ 0, /* bitpos */
+ complain_overflow_bitfield, /* complain_on_overflow */
+ ppc_elf_unsupported_reloc, /* special_function */
+ "R_PPC_EMB_NADDR32", /* name */
+ false, /* partial_inplace */
+ 0, /* src_mask */
+ 0xffffffff, /* dst_mask */
+ false), /* pcrel_offset */
+
+ /* 16 bit value resulting from the addend minus the symbol */
+ HOWTO (R_PPC_EMB_NADDR16, /* type */
+ 0, /* rightshift */
+ 1, /* size (0 = byte, 1 = short, 2 = long) */
+ 16, /* bitsize */
+ false, /* pc_relative */
+ 0, /* bitpos */
+ complain_overflow_bitfield, /* complain_on_overflow */
+ ppc_elf_unsupported_reloc, /* special_function */
+ "R_PPC_EMB_NADDR16", /* name */
+ false, /* partial_inplace */
+ 0, /* src_mask */
+ 0xffff, /* dst_mask */
+ false), /* pcrel_offset */
+
+ /* 16 bit value resulting from the addend minus the symbol */
+ HOWTO (R_PPC_EMB_NADDR16_LO, /* type */
+ 0, /* rightshift */
+ 1, /* size (0 = byte, 1 = short, 2 = long) */
+ 16, /* bitsize */
+ false, /* pc_relative */
+ 0, /* bitpos */
+ complain_overflow_dont,/* complain_on_overflow */
+ ppc_elf_unsupported_reloc, /* special_function */
+ "R_PPC_EMB_ADDR16_LO", /* name */
+ false, /* partial_inplace */
+ 0, /* src_mask */
+ 0xffff, /* dst_mask */
+ false), /* pcrel_offset */
+
+ /* The high order 16 bits of the addend minus the symbol */
+ HOWTO (R_PPC_EMB_NADDR16_HI, /* type */
+ 16, /* rightshift */
+ 1, /* size (0 = byte, 1 = short, 2 = long) */
+ 16, /* bitsize */
+ false, /* pc_relative */
+ 0, /* bitpos */
+ complain_overflow_dont, /* complain_on_overflow */
+ ppc_elf_unsupported_reloc, /* special_function */
+ "R_PPC_EMB_NADDR16_HI", /* name */
+ false, /* partial_inplace */
+ 0, /* src_mask */
+ 0xffff, /* dst_mask */
+ false), /* pcrel_offset */
+
+ /* The high order 16 bits of the result of the addend minus the address,
+ plus 1 if the contents of the low 16 bits, treated as a signed number,
+ is negative. */
+ HOWTO (R_PPC_EMB_NADDR16_HA, /* type */
+ 16, /* rightshift */
+ 1, /* size (0 = byte, 1 = short, 2 = long) */
+ 16, /* bitsize */
+ false, /* pc_relative */
+ 0, /* bitpos */
+ complain_overflow_dont, /* complain_on_overflow */
+ ppc_elf_unsupported_reloc, /* special_function */
+ "R_PPC_EMB_NADDR16_HA", /* name */
+ false, /* partial_inplace */
+ 0, /* src_mask */
+ 0xffff, /* dst_mask */
+ false), /* pcrel_offset */
+};
+
+/* Don't pretend we can deal with unsupported relocs. */
+
+/*ARGSUSED*/
+static bfd_reloc_status_type
+ppc_elf_unsupported_reloc (abfd, reloc_entry, symbol, data, input_section,
+ output_bfd, error_message)
+ bfd *abfd;
+ arelent *reloc_entry;
+ asymbol *symbol;
+ PTR data;
+ asection *input_section;
+ bfd *output_bfd;
+ char **error_message;
+{
+ abort ();
+}
+
+/* Handle the ADDR16_HA reloc by adjusting the reloc addend. */
+
+static bfd_reloc_status_type
+ppc_elf_addr16_ha_reloc (abfd, reloc_entry, symbol, data, input_section,
+ output_bfd, error_message)
+ bfd *abfd;
+ arelent *reloc_entry;
+ asymbol *symbol;
+ PTR data;
+ asection *input_section;
+ bfd *output_bfd;
+ char **error_message;
+{
+ bfd_vma relocation;
+
+ if (output_bfd != (bfd *) NULL)
+ return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data,
+ input_section, output_bfd, error_message);
+
+ if (bfd_is_com_section (symbol->section))
+ relocation = 0;
+ else
+ relocation = symbol->value;
+
+ relocation += (symbol->section->output_section->vma
+ + symbol->section->output_offset
+ + reloc_entry->addend);
+
+ if ((relocation & 0x8000) != 0)
+ reloc_entry->addend += 0x10000;
+
+ return bfd_reloc_continue;
+}
+
+/* Handle the GOT16 reloc. We want to use the offset within the .got
+ section, not the actual VMA. This is appropriate when generating
+ an embedded ELF object, for which the .got section acts like the
+ AIX .toc section. When and if we support PIC code, we will have to
+ change this, perhaps by switching off on the e_type field. */
+
+static bfd_reloc_status_type
+ppc_elf_got16_reloc (abfd, reloc_entry, symbol, data, input_section,
+ output_bfd, error_message)
+ bfd *abfd;
+ arelent *reloc_entry;
+ asymbol *symbol;
+ PTR data;
+ asection *input_section;
+ bfd *output_bfd;
+ char **error_message;
+{
+ asection *sec;
+
+ if (output_bfd != (bfd *) NULL)
+ return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data,
+ input_section, output_bfd, error_message);
+
+ sec = bfd_get_section (*reloc_entry->sym_ptr_ptr);
+ BFD_ASSERT (bfd_is_und_section (sec)
+ || strcmp (bfd_get_section_name (abfd, sec), ".got") == 0
+ || strcmp (bfd_get_section_name (abfd, sec), ".cgot") == 0);
+ reloc_entry->addend -= sec->output_section->vma;
+ return bfd_reloc_continue;
+}
+
+/* Map BFD reloc types to PowerPC ELF reloc types. */
+
+struct powerpc_reloc_map
+{
+ unsigned char bfd_reloc_val;
+ unsigned char elf_reloc_val;
+};
+
+static const struct powerpc_reloc_map powerpc_reloc_map[] =
+{
+ { BFD_RELOC_NONE, R_PPC_NONE, },
+ { BFD_RELOC_32, R_PPC_ADDR32 },
+ { BFD_RELOC_32_PCREL, R_PPC_REL32 },
+ { BFD_RELOC_CTOR, R_PPC_ADDR32 },
+ { BFD_RELOC_PPC_B26, R_PPC_REL24 },
+ { BFD_RELOC_PPC_BA26, R_PPC_ADDR24 },
+ { BFD_RELOC_PPC_TOC16, R_PPC_GOT16 },
+ { BFD_RELOC_LO16, R_PPC_ADDR16_LO },
+ { BFD_RELOC_HI16, R_PPC_ADDR16_HI },
+ { BFD_RELOC_HI16_S, R_PPC_ADDR16_HA }
+};
+
+static reloc_howto_type *
+bfd_elf32_bfd_reloc_type_lookup (abfd, code)
+ bfd *abfd;
+ bfd_reloc_code_real_type code;
+{
+ int i;
+
+ for (i = 0;
+ i < sizeof (powerpc_reloc_map) / sizeof (struct powerpc_reloc_map);
+ i++)
+ {
+ if (powerpc_reloc_map[i].bfd_reloc_val == code)
+ return &elf_powerpc_howto_table[powerpc_reloc_map[i].elf_reloc_val];
+ }
+
+ return NULL;
+}
+
+/* Set the howto pointer for a PowerPC ELF reloc. */
+
+static void
+powerpc_info_to_howto (abfd, cache_ptr, dst)
+ bfd *abfd;
+ arelent *cache_ptr;
+ Elf32_Internal_Rela *dst;
+{
+ BFD_ASSERT (ELF32_R_TYPE (dst->r_info) < (unsigned int) R_PPC_max);
+ cache_ptr->howto = &elf_powerpc_howto_table[ELF32_R_TYPE (dst->r_info)];
+}
+
+#define TARGET_BIG_SYM bfd_elf32_powerpc_vec
+#define TARGET_BIG_NAME "elf32-powerpc"
+#define ELF_ARCH bfd_arch_powerpc
+#define ELF_MACHINE_CODE EM_PPC
+#define ELF_MAXPAGESIZE 0x10000
+#define elf_info_to_howto powerpc_info_to_howto
+
+#ifdef EM_CYGNUS_POWERPC
+#define ELF_MACHINE_ALT1 EM_CYGNUS_POWERPC
+#endif
+
+#ifdef EM_PPC_OLD
+#define ELF_MACHINE_ALT2 EM_PPC_OLD
+#endif
+
+#include "elf32-target.h"
projects / binutils-gdb.git / commitdiff