diff options
Diffstat (limited to 'binutils-2.24/bfd/elf32-msp430.c')
| -rw-r--r-- | binutils-2.24/bfd/elf32-msp430.c | 2489 |
1 files changed, 0 insertions, 2489 deletions
diff --git a/binutils-2.24/bfd/elf32-msp430.c b/binutils-2.24/bfd/elf32-msp430.c deleted file mode 100644 index 2f7a3dad..00000000 --- a/binutils-2.24/bfd/elf32-msp430.c +++ /dev/null @@ -1,2489 +0,0 @@ -/* MSP430-specific support for 32-bit ELF - Copyright (C) 2002-2013 Free Software Foundation, Inc. - Contributed by Dmitry Diky <diwil@mail.ru> - - 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 "bfd.h" -#include "libiberty.h" -#include "libbfd.h" -#include "elf-bfd.h" -#include "elf/msp430.h" - -static reloc_howto_type elf_msp430_howto_table[] = -{ - HOWTO (R_MSP430_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_MSP430_NONE", /* name */ - FALSE, /* partial_inplace */ - 0, /* src_mask */ - 0, /* dst_mask */ - FALSE), /* pcrel_offset */ - - HOWTO (R_MSP430_32, /* 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_MSP430_32", /* name */ - FALSE, /* partial_inplace */ - 0xffffffff, /* src_mask */ - 0xffffffff, /* dst_mask */ - FALSE), /* pcrel_offset */ - - /* A 10 bit PC relative relocation. */ - HOWTO (R_MSP430_10_PCREL, /* type */ - 1, /* rightshift */ - 1, /* size (0 = byte, 1 = short, 2 = long) */ - 10, /* bitsize */ - TRUE, /* pc_relative */ - 0, /* bitpos */ - complain_overflow_bitfield,/* complain_on_overflow */ - bfd_elf_generic_reloc, /* special_function */ - "R_MSP430_10_PCREL", /* name */ - FALSE, /* partial_inplace */ - 0x3ff, /* src_mask */ - 0x3ff, /* dst_mask */ - TRUE), /* pcrel_offset */ - - /* A 16 bit absolute relocation. */ - HOWTO (R_MSP430_16, /* 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_MSP430_16", /* name */ - FALSE, /* partial_inplace */ - 0, /* src_mask */ - 0xffff, /* dst_mask */ - FALSE), /* pcrel_offset */ - - /* A 16 bit PC relative relocation for command address. */ - HOWTO (R_MSP430_16_PCREL, /* type */ - 1, /* rightshift */ - 1, /* size (0 = byte, 1 = short, 2 = long) */ - 16, /* bitsize */ - TRUE, /* pc_relative */ - 0, /* bitpos */ - complain_overflow_dont,/* complain_on_overflow */ - bfd_elf_generic_reloc, /* special_function */ - "R_MSP430_16_PCREL", /* name */ - FALSE, /* partial_inplace */ - 0, /* src_mask */ - 0xffff, /* dst_mask */ - TRUE), /* pcrel_offset */ - - /* A 16 bit absolute relocation, byte operations. */ - HOWTO (R_MSP430_16_BYTE, /* 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_MSP430_16_BYTE", /* name */ - FALSE, /* partial_inplace */ - 0xffff, /* src_mask */ - 0xffff, /* dst_mask */ - FALSE), /* pcrel_offset */ - - /* A 16 bit absolute relocation for command address. */ - HOWTO (R_MSP430_16_PCREL_BYTE,/* type */ - 1, /* rightshift */ - 1, /* size (0 = byte, 1 = short, 2 = long) */ - 16, /* bitsize */ - TRUE, /* pc_relative */ - 0, /* bitpos */ - complain_overflow_dont,/* complain_on_overflow */ - bfd_elf_generic_reloc, /* special_function */ - "R_MSP430_16_PCREL_BYTE",/* name */ - FALSE, /* partial_inplace */ - 0xffff, /* src_mask */ - 0xffff, /* dst_mask */ - TRUE), /* pcrel_offset */ - - /* A 10 bit PC relative relocation for complicated polymorphs. */ - HOWTO (R_MSP430_2X_PCREL, /* type */ - 1, /* rightshift */ - 2, /* size (0 = byte, 1 = short, 2 = long) */ - 10, /* bitsize */ - TRUE, /* pc_relative */ - 0, /* bitpos */ - complain_overflow_bitfield,/* complain_on_overflow */ - bfd_elf_generic_reloc, /* special_function */ - "R_MSP430_2X_PCREL", /* name */ - FALSE, /* partial_inplace */ - 0x3ff, /* src_mask */ - 0x3ff, /* dst_mask */ - TRUE), /* pcrel_offset */ - - /* A 16 bit relaxable relocation for command address. */ - HOWTO (R_MSP430_RL_PCREL, /* type */ - 1, /* rightshift */ - 1, /* size (0 = byte, 1 = short, 2 = long) */ - 16, /* bitsize */ - TRUE, /* pc_relative */ - 0, /* bitpos */ - complain_overflow_dont,/* complain_on_overflow */ - bfd_elf_generic_reloc, /* special_function */ - "R_MSP430_RL_PCREL", /* name */ - FALSE, /* partial_inplace */ - 0, /* src_mask */ - 0xffff, /* dst_mask */ - TRUE) /* pcrel_offset */ - - /* A 8-bit absolute relocation. */ - , HOWTO (R_MSP430_8, /* type */ - 0, /* rightshift */ - 0, /* size (0 = byte, 1 = short, 2 = long) */ - 8, /* bitsize */ - FALSE, /* pc_relative */ - 0, /* bitpos */ - complain_overflow_dont,/* complain_on_overflow */ - bfd_elf_generic_reloc, /* special_function */ - "R_MSP430_8", /* name */ - FALSE, /* partial_inplace */ - 0, /* src_mask */ - 0xffff, /* dst_mask */ - FALSE), /* pcrel_offset */ - - /* Together with a following reloc, allows for the difference - between two symbols to be the real addend of the second reloc. */ - HOWTO (R_MSP430_SYM_DIFF, /* type */ - 0, /* rightshift */ - 2, /* size (0 = byte, 1 = short, 2 = long) */ - 32, /* bitsize */ - FALSE, /* pc_relative */ - 0, /* bitpos */ - complain_overflow_dont,/* complain_on_overflow */ - NULL, /* special handler. */ - "R_MSP430_SYM_DIFF", /* name */ - FALSE, /* partial_inplace */ - 0xffffffff, /* src_mask */ - 0xffffffff, /* dst_mask */ - FALSE) /* pcrel_offset */ -}; - -static reloc_howto_type elf_msp430x_howto_table[] = -{ - HOWTO (R_MSP430_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_MSP430_NONE", /* name */ - FALSE, /* partial_inplace */ - 0, /* src_mask */ - 0, /* dst_mask */ - FALSE), /* pcrel_offset */ - - HOWTO (R_MSP430_ABS32, /* 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_MSP430_ABS32", /* name */ - FALSE, /* partial_inplace */ - 0xffffffff, /* src_mask */ - 0xffffffff, /* dst_mask */ - FALSE), /* pcrel_offset */ - - HOWTO (R_MSP430_ABS16, /* 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_MSP430_ABS16", /* name */ - FALSE, /* partial_inplace */ - 0, /* src_mask */ - 0xffff, /* dst_mask */ - FALSE), /* pcrel_offset */ - - HOWTO (R_MSP430_ABS8, /* type */ - 0, /* rightshift */ - 0, /* size (0 = byte, 1 = short, 2 = long) */ - 8, /* bitsize */ - FALSE, /* pc_relative */ - 0, /* bitpos */ - complain_overflow_bitfield,/* complain_on_overflow */ - bfd_elf_generic_reloc, /* special_function */ - "R_MSP430_ABS8", /* name */ - FALSE, /* partial_inplace */ - 0xff, /* src_mask */ - 0xff, /* dst_mask */ - FALSE), /* pcrel_offset */ - - HOWTO (R_MSP430_PCR16, /* type */ - 1, /* rightshift */ - 1, /* size (0 = byte, 1 = short, 2 = long) */ - 16, /* bitsize */ - TRUE, /* pc_relative */ - 0, /* bitpos */ - complain_overflow_dont,/* complain_on_overflow */ - bfd_elf_generic_reloc, /* special_function */ - "R_MSP430_PCR16", /* name */ - FALSE, /* partial_inplace */ - 0, /* src_mask */ - 0xffff, /* dst_mask */ - TRUE), /* pcrel_offset */ - - HOWTO (R_MSP430X_PCR20_EXT_SRC,/* type */ - 0, /* rightshift */ - 2, /* size (0 = byte, 1 = short, 2 = long) */ - 32, /* bitsize */ - TRUE, /* pc_relative */ - 0, /* bitpos */ - complain_overflow_dont,/* complain_on_overflow */ - bfd_elf_generic_reloc, /* special_function */ - "R_MSP430X_PCR20_EXT_SRC",/* name */ - FALSE, /* partial_inplace */ - 0, /* src_mask */ - 0xffff, /* dst_mask */ - TRUE), /* pcrel_offset */ - - HOWTO (R_MSP430X_PCR20_EXT_DST,/* type */ - 0, /* rightshift */ - 2, /* size (0 = byte, 1 = short, 2 = long) */ - 32, /* bitsize */ - TRUE, /* pc_relative */ - 0, /* bitpos */ - complain_overflow_dont,/* complain_on_overflow */ - bfd_elf_generic_reloc, /* special_function */ - "R_MSP430X_PCR20_EXT_DST",/* name */ - FALSE, /* partial_inplace */ - 0, /* src_mask */ - 0xffff, /* dst_mask */ - TRUE), /* pcrel_offset */ - - HOWTO (R_MSP430X_PCR20_EXT_ODST,/* type */ - 0, /* rightshift */ - 2, /* size (0 = byte, 1 = short, 2 = long) */ - 32, /* bitsize */ - TRUE, /* pc_relative */ - 0, /* bitpos */ - complain_overflow_dont,/* complain_on_overflow */ - bfd_elf_generic_reloc, /* special_function */ - "R_MSP430X_PCR20_EXT_ODST",/* name */ - FALSE, /* partial_inplace */ - 0, /* src_mask */ - 0xffff, /* dst_mask */ - TRUE), /* pcrel_offset */ - - HOWTO (R_MSP430X_ABS20_EXT_SRC,/* type */ - 0, /* rightshift */ - 2, /* size (0 = byte, 1 = short, 2 = long) */ - 32, /* bitsize */ - TRUE, /* pc_relative */ - 0, /* bitpos */ - complain_overflow_dont,/* complain_on_overflow */ - bfd_elf_generic_reloc, /* special_function */ - "R_MSP430X_ABS20_EXT_SRC",/* name */ - FALSE, /* partial_inplace */ - 0, /* src_mask */ - 0xffff, /* dst_mask */ - TRUE), /* pcrel_offset */ - - HOWTO (R_MSP430X_ABS20_EXT_DST,/* type */ - 0, /* rightshift */ - 2, /* size (0 = byte, 1 = short, 2 = long) */ - 32, /* bitsize */ - TRUE, /* pc_relative */ - 0, /* bitpos */ - complain_overflow_dont,/* complain_on_overflow */ - bfd_elf_generic_reloc, /* special_function */ - "R_MSP430X_ABS20_EXT_DST",/* name */ - FALSE, /* partial_inplace */ - 0, /* src_mask */ - 0xffff, /* dst_mask */ - TRUE), /* pcrel_offset */ - - HOWTO (R_MSP430X_ABS20_EXT_ODST,/* type */ - 0, /* rightshift */ - 2, /* size (0 = byte, 1 = short, 2 = long) */ - 32, /* bitsize */ - TRUE, /* pc_relative */ - 0, /* bitpos */ - complain_overflow_dont,/* complain_on_overflow */ - bfd_elf_generic_reloc, /* special_function */ - "R_MSP430X_ABS20_EXT_ODST",/* name */ - FALSE, /* partial_inplace */ - 0, /* src_mask */ - 0xffff, /* dst_mask */ - TRUE), /* pcrel_offset */ - - HOWTO (R_MSP430X_ABS20_ADR_SRC,/* type */ - 0, /* rightshift */ - 2, /* size (0 = byte, 1 = short, 2 = long) */ - 32, /* bitsize */ - TRUE, /* pc_relative */ - 0, /* bitpos */ - complain_overflow_dont,/* complain_on_overflow */ - bfd_elf_generic_reloc, /* special_function */ - "R_MSP430X_ABS20_ADR_SRC",/* name */ - FALSE, /* partial_inplace */ - 0, /* src_mask */ - 0xffff, /* dst_mask */ - TRUE), /* pcrel_offset */ - - HOWTO (R_MSP430X_ABS20_ADR_DST,/* type */ - 0, /* rightshift */ - 2, /* size (0 = byte, 1 = short, 2 = long) */ - 32, /* bitsize */ - TRUE, /* pc_relative */ - 0, /* bitpos */ - complain_overflow_dont,/* complain_on_overflow */ - bfd_elf_generic_reloc, /* special_function */ - "R_MSP430X_ABS20_ADR_DST",/* name */ - FALSE, /* partial_inplace */ - 0, /* src_mask */ - 0xffff, /* dst_mask */ - TRUE), /* pcrel_offset */ - - HOWTO (R_MSP430X_PCR16, /* type */ - 0, /* rightshift */ - 2, /* size (0 = byte, 1 = short, 2 = long) */ - 32, /* bitsize */ - TRUE, /* pc_relative */ - 0, /* bitpos */ - complain_overflow_dont,/* complain_on_overflow */ - bfd_elf_generic_reloc, /* special_function */ - "R_MSP430X_PCR16", /* name */ - FALSE, /* partial_inplace */ - 0, /* src_mask */ - 0xffff, /* dst_mask */ - TRUE), /* pcrel_offset */ - - HOWTO (R_MSP430X_PCR20_CALL, /* type */ - 0, /* rightshift */ - 2, /* size (0 = byte, 1 = short, 2 = long) */ - 32, /* bitsize */ - TRUE, /* pc_relative */ - 0, /* bitpos */ - complain_overflow_dont,/* complain_on_overflow */ - bfd_elf_generic_reloc, /* special_function */ - "R_MSP430X_PCR20_CALL",/* name */ - FALSE, /* partial_inplace */ - 0, /* src_mask */ - 0xffff, /* dst_mask */ - TRUE), /* pcrel_offset */ - - HOWTO (R_MSP430X_ABS16, /* type */ - 0, /* rightshift */ - 2, /* size (0 = byte, 1 = short, 2 = long) */ - 32, /* bitsize */ - TRUE, /* pc_relative */ - 0, /* bitpos */ - complain_overflow_dont,/* complain_on_overflow */ - bfd_elf_generic_reloc, /* special_function */ - "R_MSP430X_ABS16", /* name */ - FALSE, /* partial_inplace */ - 0, /* src_mask */ - 0xffff, /* dst_mask */ - TRUE), /* pcrel_offset */ - - HOWTO (R_MSP430_ABS_HI16, /* type */ - 0, /* rightshift */ - 2, /* size (0 = byte, 1 = short, 2 = long) */ - 32, /* bitsize */ - TRUE, /* pc_relative */ - 0, /* bitpos */ - complain_overflow_dont,/* complain_on_overflow */ - bfd_elf_generic_reloc, /* special_function */ - "R_MSP430_ABS_HI16", /* name */ - FALSE, /* partial_inplace */ - 0, /* src_mask */ - 0xffff, /* dst_mask */ - TRUE), /* pcrel_offset */ - - HOWTO (R_MSP430_PREL31, /* type */ - 0, /* rightshift */ - 2, /* size (0 = byte, 1 = short, 2 = long) */ - 32, /* bitsize */ - TRUE, /* pc_relative */ - 0, /* bitpos */ - complain_overflow_dont,/* complain_on_overflow */ - bfd_elf_generic_reloc, /* special_function */ - "R_MSP430_PREL31", /* name */ - FALSE, /* partial_inplace */ - 0, /* src_mask */ - 0xffff, /* dst_mask */ - TRUE), /* pcrel_offset */ - - EMPTY_HOWTO (R_MSP430_EHTYPE), - - /* A 10 bit PC relative relocation. */ - HOWTO (R_MSP430X_10_PCREL, /* type */ - 1, /* rightshift */ - 1, /* size (0 = byte, 1 = short, 2 = long) */ - 10, /* bitsize */ - TRUE, /* pc_relative */ - 0, /* bitpos */ - complain_overflow_bitfield,/* complain_on_overflow */ - bfd_elf_generic_reloc, /* special_function */ - "R_MSP430X_10_PCREL", /* name */ - FALSE, /* partial_inplace */ - 0x3ff, /* src_mask */ - 0x3ff, /* dst_mask */ - TRUE), /* pcrel_offset */ - - /* A 10 bit PC relative relocation for complicated polymorphs. */ - HOWTO (R_MSP430X_2X_PCREL, /* type */ - 1, /* rightshift */ - 2, /* size (0 = byte, 1 = short, 2 = long) */ - 10, /* bitsize */ - TRUE, /* pc_relative */ - 0, /* bitpos */ - complain_overflow_bitfield,/* complain_on_overflow */ - bfd_elf_generic_reloc, /* special_function */ - "R_MSP430X_2X_PCREL", /* name */ - FALSE, /* partial_inplace */ - 0x3ff, /* src_mask */ - 0x3ff, /* dst_mask */ - TRUE), /* pcrel_offset */ - - /* Together with a following reloc, allows for the difference - between two symbols to be the real addend of the second reloc. */ - HOWTO (R_MSP430X_SYM_DIFF, /* type */ - 0, /* rightshift */ - 2, /* size (0 = byte, 1 = short, 2 = long) */ - 32, /* bitsize */ - FALSE, /* pc_relative */ - 0, /* bitpos */ - complain_overflow_dont,/* complain_on_overflow */ - NULL, /* special handler. */ - "R_MSP430X_SYM_DIFF", /* name */ - FALSE, /* partial_inplace */ - 0xffffffff, /* src_mask */ - 0xffffffff, /* dst_mask */ - FALSE) /* pcrel_offset */ -}; - -/* Map BFD reloc types to MSP430 ELF reloc types. */ - -struct msp430_reloc_map -{ - bfd_reloc_code_real_type bfd_reloc_val; - unsigned int elf_reloc_val; -}; - -static const struct msp430_reloc_map msp430_reloc_map[] = -{ - {BFD_RELOC_NONE, R_MSP430_NONE}, - {BFD_RELOC_32, R_MSP430_32}, - {BFD_RELOC_MSP430_10_PCREL, R_MSP430_10_PCREL}, - {BFD_RELOC_16, R_MSP430_16_BYTE}, - {BFD_RELOC_MSP430_16_PCREL, R_MSP430_16_PCREL}, - {BFD_RELOC_MSP430_16, R_MSP430_16}, - {BFD_RELOC_MSP430_16_PCREL_BYTE, R_MSP430_16_PCREL_BYTE}, - {BFD_RELOC_MSP430_16_BYTE, R_MSP430_16_BYTE}, - {BFD_RELOC_MSP430_2X_PCREL, R_MSP430_2X_PCREL}, - {BFD_RELOC_MSP430_RL_PCREL, R_MSP430_RL_PCREL}, - {BFD_RELOC_8, R_MSP430_8}, - {BFD_RELOC_MSP430_SYM_DIFF, R_MSP430_SYM_DIFF} -}; - -static const struct msp430_reloc_map msp430x_reloc_map[] = -{ - {BFD_RELOC_NONE, R_MSP430_NONE}, - {BFD_RELOC_32, R_MSP430_ABS32}, - {BFD_RELOC_16, R_MSP430_ABS16}, - {BFD_RELOC_8, R_MSP430_ABS8}, - {BFD_RELOC_MSP430_ABS8, R_MSP430_ABS8}, - {BFD_RELOC_MSP430X_PCR20_EXT_SRC, R_MSP430X_PCR20_EXT_SRC}, - {BFD_RELOC_MSP430X_PCR20_EXT_DST, R_MSP430X_PCR20_EXT_DST}, - {BFD_RELOC_MSP430X_PCR20_EXT_ODST, R_MSP430X_PCR20_EXT_ODST}, - {BFD_RELOC_MSP430X_ABS20_EXT_SRC, R_MSP430X_ABS20_EXT_SRC}, - {BFD_RELOC_MSP430X_ABS20_EXT_DST, R_MSP430X_ABS20_EXT_DST}, - {BFD_RELOC_MSP430X_ABS20_EXT_ODST, R_MSP430X_ABS20_EXT_ODST}, - {BFD_RELOC_MSP430X_ABS20_ADR_SRC, R_MSP430X_ABS20_ADR_SRC}, - {BFD_RELOC_MSP430X_ABS20_ADR_DST, R_MSP430X_ABS20_ADR_DST}, - {BFD_RELOC_MSP430X_PCR16, R_MSP430X_PCR16}, - {BFD_RELOC_MSP430X_PCR20_CALL, R_MSP430X_PCR20_CALL}, - {BFD_RELOC_MSP430X_ABS16, R_MSP430X_ABS16}, - {BFD_RELOC_MSP430_ABS_HI16, R_MSP430_ABS_HI16}, - {BFD_RELOC_MSP430_PREL31, R_MSP430_PREL31}, - {BFD_RELOC_MSP430_10_PCREL, R_MSP430X_10_PCREL}, - {BFD_RELOC_MSP430_2X_PCREL, R_MSP430X_2X_PCREL}, - {BFD_RELOC_MSP430_RL_PCREL, R_MSP430X_PCR16}, - {BFD_RELOC_MSP430_SYM_DIFF, R_MSP430X_SYM_DIFF} -}; - -static inline bfd_boolean -uses_msp430x_relocs (bfd * abfd) -{ - extern const bfd_target bfd_elf32_msp430_ti_vec; - - return bfd_get_mach (abfd) == bfd_mach_msp430x - || abfd->xvec == & bfd_elf32_msp430_ti_vec; -} - -static reloc_howto_type * -bfd_elf32_bfd_reloc_type_lookup (bfd * abfd ATTRIBUTE_UNUSED, - bfd_reloc_code_real_type code) -{ - unsigned int i; - - if (uses_msp430x_relocs (abfd)) - { - for (i = ARRAY_SIZE (msp430x_reloc_map); i--;) - if (msp430x_reloc_map[i].bfd_reloc_val == code) - return elf_msp430x_howto_table + msp430x_reloc_map[i].elf_reloc_val; - } - else - { - for (i = 0; i < ARRAY_SIZE (msp430_reloc_map); i++) - if (msp430_reloc_map[i].bfd_reloc_val == code) - return &elf_msp430_howto_table[msp430_reloc_map[i].elf_reloc_val]; - } - - return NULL; -} - -static reloc_howto_type * -bfd_elf32_bfd_reloc_name_lookup (bfd *abfd ATTRIBUTE_UNUSED, - const char *r_name) -{ - unsigned int i; - - if (uses_msp430x_relocs (abfd)) - { - for (i = ARRAY_SIZE (elf_msp430x_howto_table); i--;) - if (elf_msp430x_howto_table[i].name != NULL - && strcasecmp (elf_msp430x_howto_table[i].name, r_name) == 0) - return elf_msp430x_howto_table + i; - } - else - { - for (i = 0; - i < (sizeof (elf_msp430_howto_table) - / sizeof (elf_msp430_howto_table[0])); - i++) - if (elf_msp430_howto_table[i].name != NULL - && strcasecmp (elf_msp430_howto_table[i].name, r_name) == 0) - return &elf_msp430_howto_table[i]; - } - - return NULL; -} - -/* Set the howto pointer for an MSP430 ELF reloc. */ - -static void -msp430_info_to_howto_rela (bfd * abfd ATTRIBUTE_UNUSED, - arelent * cache_ptr, - Elf_Internal_Rela * dst) -{ - unsigned int r_type; - - r_type = ELF32_R_TYPE (dst->r_info); - - if (uses_msp430x_relocs (abfd)) - { - BFD_ASSERT (r_type < (unsigned int) R_MSP430x_max); - cache_ptr->howto = elf_msp430x_howto_table + r_type; - return; - } - - BFD_ASSERT (r_type < (unsigned int) R_MSP430_max); - cache_ptr->howto = &elf_msp430_howto_table[r_type]; -} - -/* Look through the relocs for a section during the first phase. - Since we don't do .gots or .plts, we just need to consider the - virtual table relocs for gc. */ - -static bfd_boolean -elf32_msp430_check_relocs (bfd * abfd, struct bfd_link_info * info, - asection * sec, const Elf_Internal_Rela * relocs) -{ - Elf_Internal_Shdr *symtab_hdr; - struct elf_link_hash_entry **sym_hashes; - const Elf_Internal_Rela *rel; - const Elf_Internal_Rela *rel_end; - - if (info->relocatable) - return TRUE; - - symtab_hdr = &elf_tdata (abfd)->symtab_hdr; - sym_hashes = elf_sym_hashes (abfd); - - rel_end = relocs + sec->reloc_count; - for (rel = relocs; rel < rel_end; rel++) - { - struct elf_link_hash_entry *h; - unsigned long r_symndx; - - r_symndx = ELF32_R_SYM (rel->r_info); - if (r_symndx < symtab_hdr->sh_info) - h = NULL; - else - { - h = sym_hashes[r_symndx - symtab_hdr->sh_info]; - while (h->root.type == bfd_link_hash_indirect - || h->root.type == bfd_link_hash_warning) - h = (struct elf_link_hash_entry *) h->root.u.i.link; - - /* PR15323, ref flags aren't set for references in the same - object. */ - h->root.non_ir_ref = 1; - } - } - - return TRUE; -} - -/* Perform a single relocation. By default we use the standard BFD - routines, but a few relocs, we have to do them ourselves. */ - -static bfd_reloc_status_type -msp430_final_link_relocate (reloc_howto_type * howto, - bfd * input_bfd, - asection * input_section, - bfd_byte * contents, - Elf_Internal_Rela * rel, - bfd_vma relocation, - struct bfd_link_info * info) -{ - static asection * sym_diff_section; - static bfd_vma sym_diff_value; - - struct bfd_elf_section_data * esd = elf_section_data (input_section); - bfd_reloc_status_type r = bfd_reloc_ok; - bfd_vma x; - bfd_signed_vma srel; - bfd_boolean is_rel_reloc = FALSE; - - if (uses_msp430x_relocs (input_bfd)) - { - /* See if we have a REL type relocation. */ - is_rel_reloc = (esd->rel.hdr != NULL); - /* Sanity check - only one type of relocation per section. - FIXME: Theoretically it is possible to have both types, - but if that happens how can we distinguish between the two ? */ - BFD_ASSERT (! is_rel_reloc || ! esd->rela.hdr); - /* If we are using a REL relocation then the addend should be empty. */ - BFD_ASSERT (! is_rel_reloc || rel->r_addend == 0); - } - - if (sym_diff_section != NULL) - { - BFD_ASSERT (sym_diff_section == input_section); - - if (uses_msp430x_relocs (input_bfd)) - switch (howto->type) - { - case R_MSP430_ABS32: - /* If we are computing a 32-bit value for the location lists - and the result is 0 then we add one to the value. A zero - value can result because of linker relaxation deleteing - prologue instructions and using a value of 1 (for the begin - and end offsets in the location list entry) results in a - nul entry which does not prevent the following entries from - being parsed. */ - if (relocation == sym_diff_value - && strcmp (input_section->name, ".debug_loc") == 0) - ++ relocation; - /* Fall through. */ - case R_MSP430_ABS16: - case R_MSP430X_ABS16: - case R_MSP430_ABS8: - BFD_ASSERT (! is_rel_reloc); - relocation -= sym_diff_value; - break; - - default: - return bfd_reloc_dangerous; - } - else - switch (howto->type) - { - case R_MSP430_32: - case R_MSP430_16: - case R_MSP430_16_BYTE: - case R_MSP430_8: - relocation -= sym_diff_value; - break; - - default: - return bfd_reloc_dangerous; - } - - sym_diff_section = NULL; - } - - if (uses_msp430x_relocs (input_bfd)) - switch (howto->type) - { - case R_MSP430X_SYM_DIFF: - /* Cache the input section and value. - The offset is unreliable, since relaxation may - have reduced the following reloc's offset. */ - BFD_ASSERT (! is_rel_reloc); - sym_diff_section = input_section; - sym_diff_value = relocation; - return bfd_reloc_ok; - - case R_MSP430_ABS16: - contents += rel->r_offset; - srel = (bfd_signed_vma) relocation; - if (is_rel_reloc) - srel += bfd_get_16 (input_bfd, contents); - else - srel += rel->r_addend; - bfd_put_16 (input_bfd, srel & 0xffff, contents); - break; - - case R_MSP430X_10_PCREL: - contents += rel->r_offset; - srel = (bfd_signed_vma) relocation; - if (is_rel_reloc) - srel += bfd_get_16 (input_bfd, contents) & 0x3ff; - else - srel += rel->r_addend; - srel -= rel->r_offset; - srel -= 2; /* Branch instructions add 2 to the PC... */ - srel -= (input_section->output_section->vma + - input_section->output_offset); - if (srel & 1) - return bfd_reloc_outofrange; - - /* MSP430 addresses commands as words. */ - srel >>= 1; - - /* Check for an overflow. */ - if (srel < -512 || srel > 511) - { - if (info->disable_target_specific_optimizations < 0) - { - static bfd_boolean warned = FALSE; - if (! warned) - { - info->callbacks->warning - (info, - _("Try enabling relaxation to avoid relocation truncations"), - NULL, input_bfd, input_section, relocation); - warned = TRUE; - } - } - return bfd_reloc_overflow; - } - - x = bfd_get_16 (input_bfd, contents); - x = (x & 0xfc00) | (srel & 0x3ff); - bfd_put_16 (input_bfd, x, contents); - break; - - case R_MSP430X_PCR20_EXT_ODST: - /* [0,4]+[48,16] = ---F ---- FFFF */ - contents += rel->r_offset; - srel = (bfd_signed_vma) relocation; - if (is_rel_reloc) - { - bfd_vma addend; - addend = (bfd_get_16 (input_bfd, contents) & 0xf) << 16; - addend |= bfd_get_16 (input_bfd, contents+4); - srel += addend; - - } - else - srel += rel->r_addend; - srel -= rel->r_offset; - srel -= (input_section->output_section->vma + - input_section->output_offset); - bfd_put_16 (input_bfd, (srel & 0xffff), contents + 6); - x = bfd_get_16 (input_bfd, contents); - x = (x & 0xfff0) | ((srel >> 16) & 0xf); - bfd_put_16 (input_bfd, x, contents); - break; - - case R_MSP430X_ABS20_EXT_SRC: - /* [7,4]+[32,16] = -78- FFFF */ - contents += rel->r_offset; - srel = (bfd_signed_vma) relocation; - if (is_rel_reloc) - { - bfd_vma addend; - addend = (bfd_get_16 (input_bfd, contents) & 0x0780) << 9; - addend |= bfd_get_16 (input_bfd, contents+2); - srel += addend; - } - else - srel += rel->r_addend; - bfd_put_16 (input_bfd, (srel & 0xffff), contents + 4); - srel >>= 16; - x = bfd_get_16 (input_bfd, contents); - x = (x & 0xf87f) | ((srel << 7) & 0x0780); - bfd_put_16 (input_bfd, x, contents); - break; - - case R_MSP430_16_PCREL: - contents += rel->r_offset; - srel = (bfd_signed_vma) relocation; - if (is_rel_reloc) - srel += bfd_get_16 (input_bfd, contents); - else - srel += rel->r_addend; - srel -= rel->r_offset; - /* Only branch instructions add 2 to the PC... */ - srel -= (input_section->output_section->vma + - input_section->output_offset); - if (srel & 1) - return bfd_reloc_outofrange; - bfd_put_16 (input_bfd, srel & 0xffff, contents); - break; - - case R_MSP430X_PCR20_EXT_DST: - /* [0,4]+[32,16] = ---F FFFF */ - contents += rel->r_offset; - srel = (bfd_signed_vma) relocation; - if (is_rel_reloc) - { - bfd_vma addend; - addend = (bfd_get_16 (input_bfd, contents) & 0xf) << 16; - addend |= bfd_get_16 (input_bfd, contents+2); - srel += addend; - } - else - srel += rel->r_addend; - srel -= rel->r_offset; - srel -= (input_section->output_section->vma + - input_section->output_offset); - bfd_put_16 (input_bfd, (srel & 0xffff), contents + 4); - srel >>= 16; - x = bfd_get_16 (input_bfd, contents); - x = (x & 0xfff0) | (srel & 0xf); - bfd_put_16 (input_bfd, x, contents); - break; - - case R_MSP430X_PCR20_EXT_SRC: - /* [7,4]+32,16] = -78- FFFF */ - contents += rel->r_offset; - srel = (bfd_signed_vma) relocation; - if (is_rel_reloc) - { - bfd_vma addend; - addend = ((bfd_get_16 (input_bfd, contents) & 0x0780) << 9); - addend |= bfd_get_16 (input_bfd, contents+2); - srel += addend;; - } - else - srel += rel->r_addend; - srel -= rel->r_offset; - /* Only branch instructions add 2 to the PC... */ - srel -= (input_section->output_section->vma + - input_section->output_offset); - bfd_put_16 (input_bfd, (srel & 0xffff), contents + 4); - srel >>= 16; - x = bfd_get_16 (input_bfd, contents); - x = (x & 0xf87f) | ((srel << 7) & 0x0780); - bfd_put_16 (input_bfd, x, contents); - break; - - case R_MSP430_ABS8: - contents += rel->r_offset; - srel = (bfd_signed_vma) relocation; - if (is_rel_reloc) - srel += bfd_get_8 (input_bfd, contents); - else - srel += rel->r_addend; - bfd_put_8 (input_bfd, srel & 0xff, contents); - break; - - case R_MSP430X_ABS20_EXT_DST: - contents += rel->r_offset; - srel = (bfd_signed_vma) relocation; - if (is_rel_reloc) - srel += bfd_get_16 (input_bfd, contents) & 0xf; - else - srel += rel->r_addend; - bfd_put_16 (input_bfd, (srel & 0xffff), contents + 4); - srel >>= 16; - x = bfd_get_16 (input_bfd, contents); - x = (x & 0xfff0) | (srel & 0xf); - bfd_put_16 (input_bfd, x, contents); - break; - - case R_MSP430X_ABS20_EXT_ODST: - /* [0,4]+[48,16] = ---F ---- FFFF */ - contents += rel->r_offset; - srel = (bfd_signed_vma) relocation; - if (is_rel_reloc) - { - bfd_vma addend; - addend = (bfd_get_16 (input_bfd, contents) & 0xf) << 16; - addend |= bfd_get_16 (input_bfd, contents+4); - srel += addend; - } - else - srel += rel->r_addend; - bfd_put_16 (input_bfd, (srel & 0xffff), contents + 6); - srel >>= 16; - x = bfd_get_16 (input_bfd, contents); - x = (x & 0xfff0) | (srel & 0xf); - bfd_put_16 (input_bfd, x, contents); - break; - - case R_MSP430X_ABS20_ADR_SRC: - /* [8,4]+[32,16] = -F-- FFFF */ - contents += rel->r_offset; - srel = (bfd_signed_vma) relocation; - if (is_rel_reloc) - { - bfd_vma addend; - - addend = ((bfd_get_16 (input_bfd, contents) & 0xf00) << 8); - addend |= bfd_get_16 (input_bfd, contents+2); - srel += addend; - } - else - srel += rel->r_addend; - bfd_put_16 (input_bfd, (srel & 0xffff), contents + 2); - srel >>= 16; - x = bfd_get_16 (input_bfd, contents); - x = (x & 0xf0ff) | ((srel << 8) & 0x0f00); - bfd_put_16 (input_bfd, x, contents); - break; - - case R_MSP430X_ABS20_ADR_DST: - /* [0,4]+[32,16] = ---F FFFF */ - contents += rel->r_offset; - srel = (bfd_signed_vma) relocation; - if (is_rel_reloc) - { - bfd_vma addend; - addend = ((bfd_get_16 (input_bfd, contents) & 0xf) << 16); - addend |= bfd_get_16 (input_bfd, contents+2); - srel += addend; - } - else - srel += rel->r_addend; - bfd_put_16 (input_bfd, (srel & 0xffff), contents + 2); - srel >>= 16; - x = bfd_get_16 (input_bfd, contents); - x = (x & 0xfff0) | (srel & 0xf); - bfd_put_16 (input_bfd, x, contents); - break; - - case R_MSP430X_ABS16: - contents += rel->r_offset; - srel = (bfd_signed_vma) relocation; - if (is_rel_reloc) - srel += bfd_get_16 (input_bfd, contents); - else - srel += rel->r_addend; - x = srel; - if (x > 0xffff) - return bfd_reloc_overflow; - bfd_put_16 (input_bfd, srel & 0xffff, contents); - break; - - case R_MSP430_ABS_HI16: - /* The EABI specifies that this must be a RELA reloc. */ - BFD_ASSERT (! is_rel_reloc); - contents += rel->r_offset; - srel = (bfd_signed_vma) relocation; - srel += rel->r_addend; - bfd_put_16 (input_bfd, (srel >> 16) & 0xffff, contents); - break; - - case R_MSP430X_PCR20_CALL: - /* [0,4]+[32,16] = ---F FFFF*/ - contents += rel->r_offset; - srel = (bfd_signed_vma) relocation; - if (is_rel_reloc) - { - bfd_vma addend; - addend = (bfd_get_16 (input_bfd, contents) & 0xf) << 16; - addend |= bfd_get_16 (input_bfd, contents+2); - srel += addend; - } - else - srel += rel->r_addend; - srel -= rel->r_offset; - srel -= (input_section->output_section->vma + - input_section->output_offset); - bfd_put_16 (input_bfd, srel & 0xffff, contents + 2); - srel >>= 16; - x = bfd_get_16 (input_bfd, contents); - x = (x & 0xfff0) | (srel & 0xf); - bfd_put_16 (input_bfd, x, contents); - break; - - case R_MSP430X_PCR16: - contents += rel->r_offset; - srel = (bfd_signed_vma) relocation; - if (is_rel_reloc) - srel += bfd_get_16 (input_bfd, contents); - else - srel += rel->r_addend; - srel -= rel->r_offset; - srel -= (input_section->output_section->vma + - input_section->output_offset); - bfd_put_16 (input_bfd, srel & 0xffff, contents); - break; - - case R_MSP430_PREL31: - contents += rel->r_offset; - srel = (bfd_signed_vma) relocation; - if (is_rel_reloc) - srel += (bfd_get_32 (input_bfd, contents) & 0x7fffffff); - else - srel += rel->r_addend; - srel += rel->r_addend; - x = bfd_get_32 (input_bfd, contents); - x = (x & 0x80000000) | ((srel >> 31) & 0x7fffffff); - bfd_put_32 (input_bfd, x, contents); - break; - - default: - r = _bfd_final_link_relocate (howto, input_bfd, input_section, - contents, rel->r_offset, - relocation, rel->r_addend); - } - else - switch (howto->type) - { - case R_MSP430_10_PCREL: - contents += rel->r_offset; - srel = (bfd_signed_vma) relocation; - srel += rel->r_addend; - srel -= rel->r_offset; - srel -= 2; /* Branch instructions add 2 to the PC... */ - srel -= (input_section->output_section->vma + - input_section->output_offset); - - if (srel & 1) - return bfd_reloc_outofrange; - - /* MSP430 addresses commands as words. */ - srel >>= 1; - - /* Check for an overflow. */ - if (srel < -512 || srel > 511) - { - if (info->disable_target_specific_optimizations < 0) - { - static bfd_boolean warned = FALSE; - if (! warned) - { - info->callbacks->warning - (info, - _("Try enabling relaxation to avoid relocation truncations"), - NULL, input_bfd, input_section, relocation); - warned = TRUE; - } - } - return bfd_reloc_overflow; - } - - x = bfd_get_16 (input_bfd, contents); - x = (x & 0xfc00) | (srel & 0x3ff); - bfd_put_16 (input_bfd, x, contents); - break; - - case R_MSP430_2X_PCREL: - contents += rel->r_offset; - srel = (bfd_signed_vma) relocation; - srel += rel->r_addend; - srel -= rel->r_offset; - srel -= 2; /* Branch instructions add 2 to the PC... */ - srel -= (input_section->output_section->vma + - input_section->output_offset); - - if (srel & 1) - return bfd_reloc_outofrange; - - /* MSP430 addresses commands as words. */ - srel >>= 1; - - /* Check for an overflow. */ - if (srel < -512 || srel > 511) - return bfd_reloc_overflow; - - x = bfd_get_16 (input_bfd, contents); - x = (x & 0xfc00) | (srel & 0x3ff); - bfd_put_16 (input_bfd, x, contents); - /* Handle second jump instruction. */ - x = bfd_get_16 (input_bfd, contents - 2); - srel += 1; - x = (x & 0xfc00) | (srel & 0x3ff); - bfd_put_16 (input_bfd, x, contents - 2); - break; - - case R_MSP430_RL_PCREL: - case R_MSP430_16_PCREL: - contents += rel->r_offset; - srel = (bfd_signed_vma) relocation; - srel += rel->r_addend; - srel -= rel->r_offset; - /* Only branch instructions add 2 to the PC... */ - srel -= (input_section->output_section->vma + - input_section->output_offset); - - if (srel & 1) - return bfd_reloc_outofrange; - - bfd_put_16 (input_bfd, srel & 0xffff, contents); - break; - - case R_MSP430_16_PCREL_BYTE: - contents += rel->r_offset; - srel = (bfd_signed_vma) relocation; - srel += rel->r_addend; - srel -= rel->r_offset; - /* Only branch instructions add 2 to the PC... */ - srel -= (input_section->output_section->vma + - input_section->output_offset); - - bfd_put_16 (input_bfd, srel & 0xffff, contents); - break; - - case R_MSP430_16_BYTE: - contents += rel->r_offset; - srel = (bfd_signed_vma) relocation; - srel += rel->r_addend; - bfd_put_16 (input_bfd, srel & 0xffff, contents); - break; - - case R_MSP430_16: - contents += rel->r_offset; - srel = (bfd_signed_vma) relocation; - srel += rel->r_addend; - - if (srel & 1) - return bfd_reloc_notsupported; - - bfd_put_16 (input_bfd, srel & 0xffff, contents); - break; - - case R_MSP430_8: - contents += rel->r_offset; - srel = (bfd_signed_vma) relocation; - srel += rel->r_addend; - - bfd_put_8 (input_bfd, srel & 0xff, contents); - break; - - case R_MSP430_SYM_DIFF: - /* Cache the input section and value. - The offset is unreliable, since relaxation may - have reduced the following reloc's offset. */ - sym_diff_section = input_section; - sym_diff_value = relocation; - return bfd_reloc_ok; - - default: - r = _bfd_final_link_relocate (howto, input_bfd, input_section, - contents, rel->r_offset, - relocation, rel->r_addend); - } - - return r; -} - -/* Relocate an MSP430 ELF section. */ - -static bfd_boolean -elf32_msp430_relocate_section (bfd * output_bfd ATTRIBUTE_UNUSED, - struct bfd_link_info * info, - bfd * input_bfd, - asection * input_section, - bfd_byte * contents, - Elf_Internal_Rela * relocs, - Elf_Internal_Sym * local_syms, - asection ** local_sections) -{ - Elf_Internal_Shdr *symtab_hdr; - struct elf_link_hash_entry **sym_hashes; - Elf_Internal_Rela *rel; - Elf_Internal_Rela *relend; - - symtab_hdr = &elf_tdata (input_bfd)->symtab_hdr; - sym_hashes = elf_sym_hashes (input_bfd); - relend = relocs + input_section->reloc_count; - - for (rel = relocs; rel < relend; rel++) - { - reloc_howto_type *howto; - unsigned long r_symndx; - Elf_Internal_Sym *sym; - asection *sec; - struct elf_link_hash_entry *h; - bfd_vma relocation; - bfd_reloc_status_type r; - const char *name = NULL; - int r_type; - - r_type = ELF32_R_TYPE (rel->r_info); - r_symndx = ELF32_R_SYM (rel->r_info); - - if (uses_msp430x_relocs (input_bfd)) - howto = elf_msp430x_howto_table + r_type; - else - howto = elf_msp430_howto_table + r_type; - - h = NULL; - sym = NULL; - sec = NULL; - - if (r_symndx < symtab_hdr->sh_info) - { - sym = local_syms + r_symndx; - sec = local_sections[r_symndx]; - relocation = _bfd_elf_rela_local_sym (output_bfd, sym, &sec, rel); - - name = bfd_elf_string_from_elf_section - (input_bfd, symtab_hdr->sh_link, sym->st_name); - name = (name == NULL || * name == 0) ? bfd_section_name (input_bfd, sec) : name; - } - else - { - bfd_boolean unresolved_reloc, warned; - - RELOC_FOR_GLOBAL_SYMBOL (info, input_bfd, input_section, rel, - r_symndx, symtab_hdr, sym_hashes, - h, sec, relocation, - unresolved_reloc, warned); - name = h->root.root.string; - } - - if (sec != NULL && discarded_section (sec)) - RELOC_AGAINST_DISCARDED_SECTION (info, input_bfd, input_section, - rel, 1, relend, howto, 0, contents); - - if (info->relocatable) - continue; - - r = msp430_final_link_relocate (howto, input_bfd, input_section, - contents, rel, relocation, info); - - if (r != bfd_reloc_ok) - { - const char *msg = (const char *) NULL; - - switch (r) - { - case bfd_reloc_overflow: - r = info->callbacks->reloc_overflow - (info, (h ? &h->root : NULL), name, howto->name, - (bfd_vma) 0, input_bfd, input_section, - rel->r_offset); - break; - - case bfd_reloc_undefined: - r = info->callbacks->undefined_symbol - (info, name, input_bfd, input_section, rel->r_offset, TRUE); - break; - - case bfd_reloc_outofrange: - msg = _("internal error: branch/jump to an odd address detected"); - break; - - case bfd_reloc_notsupported: - msg = _("internal error: unsupported relocation error"); - break; - - case bfd_reloc_dangerous: - msg = _("internal error: dangerous relocation"); - break; - - default: - msg = _("internal error: unknown error"); - break; - } - - if (msg) - r = info->callbacks->warning - (info, msg, name, input_bfd, input_section, rel->r_offset); - - if (!r) - return FALSE; - } - - } - - return TRUE; -} - -/* The final processing done just before writing out a MSP430 ELF object - file. This gets the MSP430 architecture right based on the machine - number. */ - -static void -bfd_elf_msp430_final_write_processing (bfd * abfd, - bfd_boolean linker ATTRIBUTE_UNUSED) -{ - unsigned long val; - - switch (bfd_get_mach (abfd)) - { - default: - case bfd_mach_msp110: val = E_MSP430_MACH_MSP430x11x1; break; - case bfd_mach_msp11: val = E_MSP430_MACH_MSP430x11; break; - case bfd_mach_msp12: val = E_MSP430_MACH_MSP430x12; break; - case bfd_mach_msp13: val = E_MSP430_MACH_MSP430x13; break; - case bfd_mach_msp14: val = E_MSP430_MACH_MSP430x14; break; - case bfd_mach_msp15: val = E_MSP430_MACH_MSP430x15; break; - case bfd_mach_msp16: val = E_MSP430_MACH_MSP430x16; break; - case bfd_mach_msp31: val = E_MSP430_MACH_MSP430x31; break; - case bfd_mach_msp32: val = E_MSP430_MACH_MSP430x32; break; - case bfd_mach_msp33: val = E_MSP430_MACH_MSP430x33; break; - case bfd_mach_msp41: val = E_MSP430_MACH_MSP430x41; break; - case bfd_mach_msp42: val = E_MSP430_MACH_MSP430x42; break; - case bfd_mach_msp43: val = E_MSP430_MACH_MSP430x43; break; - case bfd_mach_msp44: val = E_MSP430_MACH_MSP430x44; break; - case bfd_mach_msp20: val = E_MSP430_MACH_MSP430x20; break; - case bfd_mach_msp22: val = E_MSP430_MACH_MSP430x22; break; - case bfd_mach_msp23: val = E_MSP430_MACH_MSP430x23; break; - case bfd_mach_msp24: val = E_MSP430_MACH_MSP430x24; break; - case bfd_mach_msp26: val = E_MSP430_MACH_MSP430x26; break; - case bfd_mach_msp46: val = E_MSP430_MACH_MSP430x46; break; - case bfd_mach_msp47: val = E_MSP430_MACH_MSP430x47; break; - case bfd_mach_msp54: val = E_MSP430_MACH_MSP430x54; break; - case bfd_mach_msp430x: val = E_MSP430_MACH_MSP430X; break; - } - - elf_elfheader (abfd)->e_machine = EM_MSP430; - elf_elfheader (abfd)->e_flags &= ~EF_MSP430_MACH; - elf_elfheader (abfd)->e_flags |= val; -} - -/* Set the right machine number. */ - -static bfd_boolean -elf32_msp430_object_p (bfd * abfd) -{ - int e_set = bfd_mach_msp14; - - if (elf_elfheader (abfd)->e_machine == EM_MSP430 - || elf_elfheader (abfd)->e_machine == EM_MSP430_OLD) - { - int e_mach = elf_elfheader (abfd)->e_flags & EF_MSP430_MACH; - - switch (e_mach) - { - default: - case E_MSP430_MACH_MSP430x11: e_set = bfd_mach_msp11; break; - case E_MSP430_MACH_MSP430x11x1: e_set = bfd_mach_msp110; break; - case E_MSP430_MACH_MSP430x12: e_set = bfd_mach_msp12; break; - case E_MSP430_MACH_MSP430x13: e_set = bfd_mach_msp13; break; - case E_MSP430_MACH_MSP430x14: e_set = bfd_mach_msp14; break; - case E_MSP430_MACH_MSP430x15: e_set = bfd_mach_msp15; break; - case E_MSP430_MACH_MSP430x16: e_set = bfd_mach_msp16; break; - case E_MSP430_MACH_MSP430x31: e_set = bfd_mach_msp31; break; - case E_MSP430_MACH_MSP430x32: e_set = bfd_mach_msp32; break; - case E_MSP430_MACH_MSP430x33: e_set = bfd_mach_msp33; break; - case E_MSP430_MACH_MSP430x41: e_set = bfd_mach_msp41; break; - case E_MSP430_MACH_MSP430x42: e_set = bfd_mach_msp42; break; - case E_MSP430_MACH_MSP430x43: e_set = bfd_mach_msp43; break; - case E_MSP430_MACH_MSP430x44: e_set = bfd_mach_msp44; break; - case E_MSP430_MACH_MSP430x20: e_set = bfd_mach_msp20; break; - case E_MSP430_MACH_MSP430x22: e_set = bfd_mach_msp22; break; - case E_MSP430_MACH_MSP430x23: e_set = bfd_mach_msp23; break; - case E_MSP430_MACH_MSP430x24: e_set = bfd_mach_msp24; break; - case E_MSP430_MACH_MSP430x26: e_set = bfd_mach_msp26; break; - case E_MSP430_MACH_MSP430x46: e_set = bfd_mach_msp46; break; - case E_MSP430_MACH_MSP430x47: e_set = bfd_mach_msp47; break; - case E_MSP430_MACH_MSP430x54: e_set = bfd_mach_msp54; break; - case E_MSP430_MACH_MSP430X: e_set = bfd_mach_msp430x; break; - } - } - - return bfd_default_set_arch_mach (abfd, bfd_arch_msp430, e_set); -} - -/* These functions handle relaxing for the msp430. - Relaxation required only in two cases: - - Bad hand coding like jumps from one section to another or - from file to file. - - Sibling calls. This will affect only 'jump label' polymorph. Without - relaxing this enlarges code by 2 bytes. Sibcalls implemented but - do not work in gcc's port by the reason I do not know. - - To convert out of range conditional jump instructions (found inside - a function) into inverted jumps over an unconditional branch instruction. - Anyway, if a relaxation required, user should pass -relax option to the - linker. - - There are quite a few relaxing opportunities available on the msp430: - - ================================================================ - - 1. 3 words -> 1 word - - eq == jeq label jne +4; br lab - ne != jne label jeq +4; br lab - lt < jl label jge +4; br lab - ltu < jlo label lhs +4; br lab - ge >= jge label jl +4; br lab - geu >= jhs label jlo +4; br lab - - 2. 4 words -> 1 word - - ltn < jn jn +2; jmp +4; br lab - - 3. 4 words -> 2 words - - gt > jeq +2; jge label jeq +6; jl +4; br label - gtu > jeq +2; jhs label jeq +6; jlo +4; br label - - 4. 4 words -> 2 words and 2 labels - - leu <= jeq label; jlo label jeq +2; jhs +4; br label - le <= jeq label; jl label jeq +2; jge +4; br label - ================================================================= - - codemap for first cases is (labels masked ): - eq: 0x2002,0x4010,0x0000 -> 0x2400 - ne: 0x2402,0x4010,0x0000 -> 0x2000 - lt: 0x3402,0x4010,0x0000 -> 0x3800 - ltu: 0x2c02,0x4010,0x0000 -> 0x2800 - ge: 0x3802,0x4010,0x0000 -> 0x3400 - geu: 0x2802,0x4010,0x0000 -> 0x2c00 - - second case: - ltn: 0x3001,0x3c02,0x4010,0x0000 -> 0x3000 - - third case: - gt: 0x2403,0x3802,0x4010,0x0000 -> 0x2401,0x3400 - gtu: 0x2403,0x2802,0x4010,0x0000 -> 0x2401,0x2c00 - - fourth case: - leu: 0x2401,0x2c02,0x4010,0x0000 -> 0x2400,0x2800 - le: 0x2401,0x3402,0x4010,0x0000 -> 0x2400,0x3800 - - Unspecified case :) - jump: 0x4010,0x0000 -> 0x3c00. */ - -#define NUMB_RELAX_CODES 12 -static struct rcodes_s -{ - int f0, f1; /* From code. */ - int t0, t1; /* To code. */ - int labels; /* Position of labels: 1 - one label at first - word, 2 - one at second word, 3 - two - labels at both. */ - int cdx; /* Words to match. */ - int bs; /* Shrink bytes. */ - int off; /* Offset from old label for new code. */ - int ncl; /* New code length. */ -} rcode[] = -{/* lab,cdx,bs,off,ncl */ - { 0x0000, 0x0000, 0x3c00, 0x0000, 1, 0, 2, 2, 2}, /* jump */ - { 0x0000, 0x2002, 0x2400, 0x0000, 1, 1, 4, 4, 2}, /* eq */ - { 0x0000, 0x2402, 0x2000, 0x0000, 1, 1, 4, 4, 2}, /* ne */ - { 0x0000, 0x3402, 0x3800, 0x0000, 1, 1, 4, 4, 2}, /* lt */ - { 0x0000, 0x2c02, 0x2800, 0x0000, 1, 1, 4, 4, 2}, /* ltu */ - { 0x0000, 0x3802, 0x3400, 0x0000, 1, 1, 4, 4, 2}, /* ge */ - { 0x0000, 0x2802, 0x2c00, 0x0000, 1, 1, 4, 4, 2}, /* geu */ - { 0x3001, 0x3c02, 0x3000, 0x0000, 1, 2, 6, 6, 2}, /* ltn */ - { 0x2403, 0x3802, 0x2401, 0x3400, 2, 2, 4, 6, 4}, /* gt */ - { 0x2403, 0x2802, 0x2401, 0x2c00, 2, 2, 4, 6, 4}, /* gtu */ - { 0x2401, 0x2c02, 0x2400, 0x2800, 3, 2, 4, 6, 4}, /* leu , 2 labels */ - { 0x2401, 0x2c02, 0x2400, 0x2800, 3, 2, 4, 6, 4}, /* le , 2 labels */ - { 0, 0, 0, 0, 0, 0, 0, 0, 0} -}; - -/* Return TRUE if a symbol exists at the given address. */ - -static bfd_boolean -msp430_elf_symbol_address_p (bfd * abfd, - asection * sec, - Elf_Internal_Sym * isym, - bfd_vma addr) -{ - Elf_Internal_Shdr *symtab_hdr; - unsigned int sec_shndx; - Elf_Internal_Sym *isymend; - struct elf_link_hash_entry **sym_hashes; - struct elf_link_hash_entry **end_hashes; - unsigned int symcount; - - sec_shndx = _bfd_elf_section_from_bfd_section (abfd, sec); - - /* Examine all the local symbols. */ - symtab_hdr = &elf_tdata (abfd)->symtab_hdr; - for (isymend = isym + symtab_hdr->sh_info; isym < isymend; isym++) - if (isym->st_shndx == sec_shndx && isym->st_value == addr) - return TRUE; - - symcount = (symtab_hdr->sh_size / sizeof (Elf32_External_Sym) - - symtab_hdr->sh_info); - sym_hashes = elf_sym_hashes (abfd); - end_hashes = sym_hashes + symcount; - for (; sym_hashes < end_hashes; sym_hashes++) - { - struct elf_link_hash_entry *sym_hash = *sym_hashes; - - if ((sym_hash->root.type == bfd_link_hash_defined - || sym_hash->root.type == bfd_link_hash_defweak) - && sym_hash->root.u.def.section == sec - && sym_hash->root.u.def.value == addr) - return TRUE; - } - - return FALSE; -} - -/* Adjust all local symbols defined as '.section + 0xXXXX' (.section has - sec_shndx) referenced from current and other sections. */ - -static bfd_boolean -msp430_elf_relax_adjust_locals (bfd * abfd, asection * sec, bfd_vma addr, - int count, unsigned int sec_shndx, - bfd_vma toaddr) -{ - Elf_Internal_Shdr *symtab_hdr; - Elf_Internal_Rela *irel; - Elf_Internal_Rela *irelend; - Elf_Internal_Sym *isym; - - irel = elf_section_data (sec)->relocs; - if (irel == NULL) - return TRUE; - - irelend = irel + sec->reloc_count; - symtab_hdr = & elf_tdata (abfd)->symtab_hdr; - isym = (Elf_Internal_Sym *) symtab_hdr->contents; - - for (;irel < irelend; irel++) - { - int sidx = ELF32_R_SYM(irel->r_info); - Elf_Internal_Sym *lsym = isym + sidx; - - /* Adjust symbols referenced by .sec+0xXX */ - if (irel->r_addend > addr && irel->r_addend < toaddr - && lsym->st_shndx == sec_shndx) - irel->r_addend -= count; - } - - return TRUE; -} - -/* Delete some bytes from a section while relaxing. */ - -static bfd_boolean -msp430_elf_relax_delete_bytes (bfd * abfd, asection * sec, bfd_vma addr, - int count) -{ - Elf_Internal_Shdr *symtab_hdr; - unsigned int sec_shndx; - bfd_byte *contents; - Elf_Internal_Rela *irel; - Elf_Internal_Rela *irelend; - bfd_vma toaddr; - Elf_Internal_Sym *isym; - Elf_Internal_Sym *isymend; - struct elf_link_hash_entry **sym_hashes; - struct elf_link_hash_entry **end_hashes; - unsigned int symcount; - asection *p; - - sec_shndx = _bfd_elf_section_from_bfd_section (abfd, sec); - - contents = elf_section_data (sec)->this_hdr.contents; - - toaddr = sec->size; - - irel = elf_section_data (sec)->relocs; - irelend = irel + sec->reloc_count; - - /* Actually delete the bytes. */ - memmove (contents + addr, contents + addr + count, - (size_t) (toaddr - addr - count)); - sec->size -= count; - - /* Adjust all the relocs. */ - symtab_hdr = & elf_tdata (abfd)->symtab_hdr; - isym = (Elf_Internal_Sym *) symtab_hdr->contents; - for (; irel < irelend; irel++) - { - /* Get the new reloc address. */ - if ((irel->r_offset > addr && irel->r_offset < toaddr)) - irel->r_offset -= count; - } - - for (p = abfd->sections; p != NULL; p = p->next) - msp430_elf_relax_adjust_locals (abfd,p,addr,count,sec_shndx,toaddr); - - /* Adjust the local symbols defined in this section. */ - symtab_hdr = & elf_tdata (abfd)->symtab_hdr; - isym = (Elf_Internal_Sym *) symtab_hdr->contents; - for (isymend = isym + symtab_hdr->sh_info; isym < isymend; isym++) - if (isym->st_shndx == sec_shndx - && isym->st_value > addr && isym->st_value < toaddr) - isym->st_value -= count; - - /* Now adjust the global symbols defined in this section. */ - symcount = (symtab_hdr->sh_size / sizeof (Elf32_External_Sym) - - symtab_hdr->sh_info); - sym_hashes = elf_sym_hashes (abfd); - end_hashes = sym_hashes + symcount; - for (; sym_hashes < end_hashes; sym_hashes++) - { - struct elf_link_hash_entry *sym_hash = *sym_hashes; - - if ((sym_hash->root.type == bfd_link_hash_defined - || sym_hash->root.type == bfd_link_hash_defweak) - && sym_hash->root.u.def.section == sec - && sym_hash->root.u.def.value > addr - && sym_hash->root.u.def.value < toaddr) - sym_hash->root.u.def.value -= count; - } - - return TRUE; -} - -/* Insert two words into a section whilst relaxing. */ - -static bfd_byte * -msp430_elf_relax_add_two_words (bfd * abfd, asection * sec, bfd_vma addr, - int word1, int word2) -{ - Elf_Internal_Shdr *symtab_hdr; - unsigned int sec_shndx; - bfd_byte *contents; - Elf_Internal_Rela *irel; - Elf_Internal_Rela *irelend; - Elf_Internal_Sym *isym; - Elf_Internal_Sym *isymend; - struct elf_link_hash_entry **sym_hashes; - struct elf_link_hash_entry **end_hashes; - unsigned int symcount; - bfd_vma sec_end; - asection *p; - - contents = elf_section_data (sec)->this_hdr.contents; - sec_end = sec->size; - - /* Make space for the new words. */ - contents = bfd_realloc (contents, sec_end + 4); - memmove (contents + addr + 4, contents + addr, sec_end - addr); - - /* Insert the new words. */ - bfd_put_16 (abfd, word1, contents + addr); - bfd_put_16 (abfd, word2, contents + addr + 2); - - /* Update the section information. */ - sec->size += 4; - elf_section_data (sec)->this_hdr.contents = contents; - - /* Adjust all the relocs. */ - irel = elf_section_data (sec)->relocs; - irelend = irel + sec->reloc_count; - - for (; irel < irelend; irel++) - if ((irel->r_offset >= addr && irel->r_offset < sec_end)) - irel->r_offset += 4; - - /* Adjust the local symbols defined in this section. */ - sec_shndx = _bfd_elf_section_from_bfd_section (abfd, sec); - for (p = abfd->sections; p != NULL; p = p->next) - msp430_elf_relax_adjust_locals (abfd, p, addr, -4, - sec_shndx, sec_end); - - /* Adjust the global symbols affected by the move. */ - symtab_hdr = & elf_tdata (abfd)->symtab_hdr; - isym = (Elf_Internal_Sym *) symtab_hdr->contents; - for (isymend = isym + symtab_hdr->sh_info; isym < isymend; isym++) - if (isym->st_shndx == sec_shndx - && isym->st_value >= addr && isym->st_value < sec_end) - isym->st_value += 4; - - /* Now adjust the global symbols defined in this section. */ - symcount = (symtab_hdr->sh_size / sizeof (Elf32_External_Sym) - - symtab_hdr->sh_info); - sym_hashes = elf_sym_hashes (abfd); - end_hashes = sym_hashes + symcount; - for (; sym_hashes < end_hashes; sym_hashes++) - { - struct elf_link_hash_entry *sym_hash = *sym_hashes; - - if ((sym_hash->root.type == bfd_link_hash_defined - || sym_hash->root.type == bfd_link_hash_defweak) - && sym_hash->root.u.def.section == sec - && sym_hash->root.u.def.value >= addr - && sym_hash->root.u.def.value < sec_end) - sym_hash->root.u.def.value += 4; - } - - return contents; -} - -static bfd_boolean -msp430_elf_relax_section (bfd * abfd, asection * sec, - struct bfd_link_info * link_info, - bfd_boolean * again) -{ - Elf_Internal_Shdr * symtab_hdr; - Elf_Internal_Rela * internal_relocs; - Elf_Internal_Rela * irel; - Elf_Internal_Rela * irelend; - bfd_byte * contents = NULL; - Elf_Internal_Sym * isymbuf = NULL; - - - /* Assume nothing changes. */ - *again = FALSE; - - /* We don't have to do anything for a relocatable link, if - this section does not have relocs, or if this is not a - code section. */ - if (link_info->relocatable - || (sec->flags & SEC_RELOC) == 0 - || sec->reloc_count == 0 || (sec->flags & SEC_CODE) == 0) - return TRUE; - - symtab_hdr = & elf_tdata (abfd)->symtab_hdr; - - /* Get a copy of the native relocations. */ - internal_relocs = - _bfd_elf_link_read_relocs (abfd, sec, NULL, NULL, link_info->keep_memory); - if (internal_relocs == NULL) - goto error_return; - - /* Walk through them looking for relaxing opportunities. */ - irelend = internal_relocs + sec->reloc_count; - - /* Do code size growing relocs first. */ - for (irel = internal_relocs; irel < irelend; irel++) - { - bfd_vma symval; - - /* If this isn't something that can be relaxed, then ignore - this reloc. */ - if (uses_msp430x_relocs (abfd) - && ELF32_R_TYPE (irel->r_info) == (int) R_MSP430X_10_PCREL) - ; - else if (! uses_msp430x_relocs (abfd) - && ELF32_R_TYPE (irel->r_info) == (int) R_MSP430_10_PCREL) - ; - else - continue; - - /* Get the section contents if we haven't done so already. */ - if (contents == NULL) - { - /* Get cached copy if it exists. */ - if (elf_section_data (sec)->this_hdr.contents != NULL) - contents = elf_section_data (sec)->this_hdr.contents; - else if (! bfd_malloc_and_get_section (abfd, sec, &contents)) - goto error_return; - } - - /* Read this BFD's local symbols if we haven't done so already. */ - if (isymbuf == NULL && symtab_hdr->sh_info != 0) - { - isymbuf = (Elf_Internal_Sym *) symtab_hdr->contents; - if (isymbuf == NULL) - isymbuf = bfd_elf_get_elf_syms (abfd, symtab_hdr, - symtab_hdr->sh_info, 0, - NULL, NULL, NULL); - if (isymbuf == NULL) - goto error_return; - } - - /* Get the value of the symbol referred to by the reloc. */ - if (ELF32_R_SYM (irel->r_info) < symtab_hdr->sh_info) - { - /* A local symbol. */ - Elf_Internal_Sym *isym; - asection *sym_sec; - - isym = isymbuf + ELF32_R_SYM (irel->r_info); - if (isym->st_shndx == SHN_UNDEF) - sym_sec = bfd_und_section_ptr; - else if (isym->st_shndx == SHN_ABS) - sym_sec = bfd_abs_section_ptr; - else if (isym->st_shndx == SHN_COMMON) - sym_sec = bfd_com_section_ptr; - else - sym_sec = bfd_section_from_elf_index (abfd, isym->st_shndx); - symval = (isym->st_value - + sym_sec->output_section->vma + sym_sec->output_offset); - } - else - { - unsigned long indx; - struct elf_link_hash_entry *h; - - /* An external symbol. */ - indx = ELF32_R_SYM (irel->r_info) - symtab_hdr->sh_info; - h = elf_sym_hashes (abfd)[indx]; - BFD_ASSERT (h != NULL); - - if (h->root.type != bfd_link_hash_defined - && h->root.type != bfd_link_hash_defweak) - /* This appears to be a reference to an undefined - symbol. Just ignore it--it will be caught by the - regular reloc processing. */ - continue; - - symval = (h->root.u.def.value - + h->root.u.def.section->output_section->vma - + h->root.u.def.section->output_offset); - } - - /* For simplicity of coding, we are going to modify the section - contents, the section relocs, and the BFD symbol table. We - must tell the rest of the code not to free up this - information. It would be possible to instead create a table - of changes which have to be made, as is done in coff-mips.c; - that would be more work, but would require less memory when - the linker is run. */ - - bfd_signed_vma value = symval; - int opcode; - - /* Compute the value that will be relocated. */ - value += irel->r_addend; - /* Convert to PC relative. */ - value -= (sec->output_section->vma + sec->output_offset); - value -= irel->r_offset; - value -= 2; - /* Scale. */ - value >>= 1; - - /* If it is in range then no modifications are needed. */ - if (value >= -512 && value <= 511) - continue; - - /* Get the opcode. */ - opcode = bfd_get_16 (abfd, contents + irel->r_offset); - - /* Compute the new opcode. We are going to convert: - J<cond> label - into: - J<inv-cond> 1f - BR[A] #label - 1: */ - switch (opcode & 0xfc00) - { - case 0x3800: opcode = 0x3402; break; /* Jl -> Jge +2 */ - case 0x3400: opcode = 0x3802; break; /* Jge -> Jl +2 */ - case 0x2c00: opcode = 0x2802; break; /* Jhs -> Jlo +2 */ - case 0x2800: opcode = 0x2c02; break; /* Jlo -> Jhs +2 */ - case 0x2400: opcode = 0x2002; break; /* Jeq -> Jne +2 */ - case 0x2000: opcode = 0x2402; break; /* jne -> Jeq +2 */ - case 0x3000: /* jn */ - /* There is no direct inverse of the Jn insn. - FIXME: we could do this as: - Jn 1f - br 2f - 1: br label - 2: */ - continue; - default: - /* Not a conditional branch instruction. */ - /* fprintf (stderr, "unrecog: %x\n", opcode); */ - goto error_return; - } - - /* Note that we've changed the relocs, section contents, etc. */ - elf_section_data (sec)->relocs = internal_relocs; - elf_section_data (sec)->this_hdr.contents = contents; - symtab_hdr->contents = (unsigned char *) isymbuf; - - /* Install the new opcode. */ - bfd_put_16 (abfd, opcode, contents + irel->r_offset); - - /* Insert the new branch instruction. */ - if (uses_msp430x_relocs (abfd)) - { - /* Insert an absolute branch (aka MOVA) instruction. */ - contents = msp430_elf_relax_add_two_words - (abfd, sec, irel->r_offset + 2, 0x0080, 0x0000); - - /* Update the relocation to point to the inserted branch - instruction. Note - we are changing a PC-relative reloc - into an absolute reloc, but this is OK because we have - arranged with the assembler to have the reloc's value be - a (local) symbol, not a section+offset value. */ - irel->r_offset += 2; - irel->r_info = ELF32_R_INFO (ELF32_R_SYM (irel->r_info), - R_MSP430X_ABS20_ADR_SRC); - } - else - { - contents = msp430_elf_relax_add_two_words - (abfd, sec, irel->r_offset + 2, 0x4030, 0x0000); - - /* See comment above about converting a 10-bit PC-rel - relocation into a 16-bit absolute relocation. */ - irel->r_offset += 4; - irel->r_info = ELF32_R_INFO (ELF32_R_SYM (irel->r_info), - R_MSP430_16); - } - - /* Growing the section may mean that other - conditional branches need to be fixed. */ - *again = TRUE; - } - - if (! uses_msp430x_relocs (abfd)) - /* Now perform the relocations that shrink the code size. - We only do this for non msp430x as gas only generates the RL - reloc for the msp430. */ - for (irel = internal_relocs; irel < irelend; irel++) - { - bfd_vma symval; - - /* Get the section contents if we haven't done so already. */ - if (contents == NULL) - { - /* Get cached copy if it exists. */ - if (elf_section_data (sec)->this_hdr.contents != NULL) - contents = elf_section_data (sec)->this_hdr.contents; - else if (! bfd_malloc_and_get_section (abfd, sec, &contents)) - goto error_return; - } - - /* Read this BFD's local symbols if we haven't done so already. */ - if (isymbuf == NULL && symtab_hdr->sh_info != 0) - { - isymbuf = (Elf_Internal_Sym *) symtab_hdr->contents; - if (isymbuf == NULL) - isymbuf = bfd_elf_get_elf_syms (abfd, symtab_hdr, - symtab_hdr->sh_info, 0, - NULL, NULL, NULL); - if (isymbuf == NULL) - goto error_return; - } - - /* Get the value of the symbol referred to by the reloc. */ - if (ELF32_R_SYM (irel->r_info) < symtab_hdr->sh_info) - { - /* A local symbol. */ - Elf_Internal_Sym *isym; - asection *sym_sec; - - isym = isymbuf + ELF32_R_SYM (irel->r_info); - if (isym->st_shndx == SHN_UNDEF) - sym_sec = bfd_und_section_ptr; - else if (isym->st_shndx == SHN_ABS) - sym_sec = bfd_abs_section_ptr; - else if (isym->st_shndx == SHN_COMMON) - sym_sec = bfd_com_section_ptr; - else - sym_sec = bfd_section_from_elf_index (abfd, isym->st_shndx); - symval = (isym->st_value - + sym_sec->output_section->vma + sym_sec->output_offset); - } - else - { - unsigned long indx; - struct elf_link_hash_entry *h; - - /* An external symbol. */ - indx = ELF32_R_SYM (irel->r_info) - symtab_hdr->sh_info; - h = elf_sym_hashes (abfd)[indx]; - BFD_ASSERT (h != NULL); - - if (h->root.type != bfd_link_hash_defined - && h->root.type != bfd_link_hash_defweak) - /* This appears to be a reference to an undefined - symbol. Just ignore it--it will be caught by the - regular reloc processing. */ - continue; - - symval = (h->root.u.def.value - + h->root.u.def.section->output_section->vma - + h->root.u.def.section->output_offset); - } - - /* For simplicity of coding, we are going to modify the section - contents, the section relocs, and the BFD symbol table. We - must tell the rest of the code not to free up this - information. It would be possible to instead create a table - of changes which have to be made, as is done in coff-mips.c; - that would be more work, but would require less memory when - the linker is run. */ - - /* Try to turn a 16bit pc-relative branch into a 10bit pc-relative - branch. */ - /* Paranoia? paranoia... */ - if (ELF32_R_TYPE (irel->r_info) == (int) R_MSP430_RL_PCREL) - { - bfd_vma value = symval; - - /* Deal with pc-relative gunk. */ - value -= (sec->output_section->vma + sec->output_offset); - value -= irel->r_offset; - value += irel->r_addend; - - /* See if the value will fit in 10 bits, note the high value is - 1016 as the target will be two bytes closer if we are - able to relax. */ - if ((long) value < 1016 && (long) value > -1016) - { - int code0 = 0, code1 = 0, code2 = 0; - int i; - struct rcodes_s *rx; - - /* Get the opcode. */ - if (irel->r_offset >= 6) - code0 = bfd_get_16 (abfd, contents + irel->r_offset - 6); - - if (irel->r_offset >= 4) - code1 = bfd_get_16 (abfd, contents + irel->r_offset - 4); - - code2 = bfd_get_16 (abfd, contents + irel->r_offset - 2); - - if (code2 != 0x4010) - continue; - - /* Check r4 and r3. */ - for (i = NUMB_RELAX_CODES - 1; i >= 0; i--) - { - rx = &rcode[i]; - if (rx->cdx == 2 && rx->f0 == code0 && rx->f1 == code1) - break; - else if (rx->cdx == 1 && rx->f1 == code1) - break; - else if (rx->cdx == 0) /* This is an unconditional jump. */ - break; - } - - /* Check labels: - .Label0: ; we do not care about this label - jeq +6 - .Label1: ; make sure there is no label here - jl +4 - .Label2: ; make sure there is no label here - br .Label_dst - - So, if there is .Label1 or .Label2 we cannot relax this code. - This actually should not happen, cause for relaxable - instructions we use RL_PCREL reloc instead of 16_PCREL. - Will change this in the future. */ - - if (rx->cdx > 0 - && msp430_elf_symbol_address_p (abfd, sec, isymbuf, - irel->r_offset - 2)) - continue; - if (rx->cdx > 1 - && msp430_elf_symbol_address_p (abfd, sec, isymbuf, - irel->r_offset - 4)) - continue; - - /* Note that we've changed the relocs, section contents, etc. */ - elf_section_data (sec)->relocs = internal_relocs; - elf_section_data (sec)->this_hdr.contents = contents; - symtab_hdr->contents = (unsigned char *) isymbuf; - - /* Fix the relocation's type. */ - if (uses_msp430x_relocs (abfd)) - { - if (rx->labels == 3) /* Handle special cases. */ - irel->r_info = ELF32_R_INFO (ELF32_R_SYM (irel->r_info), - R_MSP430X_2X_PCREL); - else - irel->r_info = ELF32_R_INFO (ELF32_R_SYM (irel->r_info), - R_MSP430X_10_PCREL); - } - else - { - if (rx->labels == 3) /* Handle special cases. */ - irel->r_info = ELF32_R_INFO (ELF32_R_SYM (irel->r_info), - R_MSP430_2X_PCREL); - else - irel->r_info = ELF32_R_INFO (ELF32_R_SYM (irel->r_info), - R_MSP430_10_PCREL); - } - - /* Fix the opcode right way. */ - bfd_put_16 (abfd, rx->t0, contents + irel->r_offset - rx->off); - if (rx->t1) - bfd_put_16 (abfd, rx->t1, - contents + irel->r_offset - rx->off + 2); - - /* Delete bytes. */ - if (!msp430_elf_relax_delete_bytes (abfd, sec, - irel->r_offset - rx->off + - rx->ncl, rx->bs)) - goto error_return; - - /* Handle unconditional jumps. */ - if (rx->cdx == 0) - irel->r_offset -= 2; - - /* That will change things, so, we should relax again. - Note that this is not required, and it may be slow. */ - *again = TRUE; - } - } - } - - if (isymbuf != NULL && symtab_hdr->contents != (unsigned char *) isymbuf) - { - if (!link_info->keep_memory) - free (isymbuf); - else - { - /* Cache the symbols for elf_link_input_bfd. */ - symtab_hdr->contents = (unsigned char *) isymbuf; - } - } - - if (contents != NULL - && elf_section_data (sec)->this_hdr.contents != contents) - { - if (!link_info->keep_memory) - free (contents); - else - { - /* Cache the section contents for elf_link_input_bfd. */ - elf_section_data (sec)->this_hdr.contents = contents; - } - } - - if (internal_relocs != NULL - && elf_section_data (sec)->relocs != internal_relocs) - free (internal_relocs); - - return TRUE; - -error_return: - if (isymbuf != NULL && symtab_hdr->contents != (unsigned char *) isymbuf) - free (isymbuf); - if (contents != NULL - && elf_section_data (sec)->this_hdr.contents != contents) - free (contents); - if (internal_relocs != NULL - && elf_section_data (sec)->relocs != internal_relocs) - free (internal_relocs); - - return FALSE; -} - -/* Handle an MSP430 specific section when reading an object file. - This is called when bfd_section_from_shdr finds a section with - an unknown type. */ - -static bfd_boolean -elf32_msp430_section_from_shdr (bfd *abfd, - Elf_Internal_Shdr * hdr, - const char *name, - int shindex) -{ - switch (hdr->sh_type) - { - case SHT_MSP430_SEC_FLAGS: - case SHT_MSP430_SYM_ALIASES: - case SHT_MSP430_ATTRIBUTES: - return _bfd_elf_make_section_from_shdr (abfd, hdr, name, shindex); - default: - return FALSE; - } -} - -static bfd_boolean -elf32_msp430_obj_attrs_handle_unknown (bfd *abfd, int tag) -{ - _bfd_error_handler - (_("Warning: %B: Unknown MSPABI object attribute %d"), - abfd, tag); - return TRUE; -} - -/* Determine whether an object attribute tag takes an integer, a - string or both. */ - -static int -elf32_msp430_obj_attrs_arg_type (int tag) -{ - if (tag == Tag_compatibility) - return ATTR_TYPE_FLAG_INT_VAL | ATTR_TYPE_FLAG_STR_VAL; - - if (tag < 32) - return ATTR_TYPE_FLAG_INT_VAL; - - return (tag & 1) != 0 ? ATTR_TYPE_FLAG_STR_VAL : ATTR_TYPE_FLAG_INT_VAL; -} - -static inline const char * -isa_type (int isa) -{ - switch (isa) - { - case 1: return "MSP430"; - case 2: return "MSP430X"; - default: return "unknown"; - } -} - -static inline const char * -code_model (int model) -{ - switch (model) - { - case 1: return "small"; - case 2: return "large"; - default: return "unknown"; - } -} - -static inline const char * -data_model (int model) -{ - switch (model) - { - case 1: return "small"; - case 2: return "large"; - case 3: return "restricted large"; - default: return "unknown"; - } -} - -/* Merge MSPABI object attributes from IBFD into OBFD. - Raise an error if there are conflicting attributes. */ - -static bfd_boolean -elf32_msp430_merge_mspabi_attributes (bfd *ibfd, bfd *obfd) -{ - obj_attribute *in_attr; - obj_attribute *out_attr; - bfd_boolean result = TRUE; - static bfd * first_input_bfd = NULL; - - /* Skip linker created files. */ - if (ibfd->flags & BFD_LINKER_CREATED) - return TRUE; - - /* If this is the first real object just copy the attributes. */ - if (!elf_known_obj_attributes_proc (obfd)[0].i) - { - _bfd_elf_copy_obj_attributes (ibfd, obfd); - - out_attr = elf_known_obj_attributes_proc (obfd); - - /* Use the Tag_null value to indicate that - the attributes have been initialized. */ - out_attr[0].i = 1; - - first_input_bfd = ibfd; - return TRUE; - } - - in_attr = elf_known_obj_attributes_proc (ibfd); - out_attr = elf_known_obj_attributes_proc (obfd); - - /* The ISAs must be the same. */ - if (in_attr[OFBA_MSPABI_Tag_ISA].i != out_attr[OFBA_MSPABI_Tag_ISA].i) - { - _bfd_error_handler - (_("error: %B uses %s instructions but %B uses %s"), - ibfd, first_input_bfd, - isa_type (in_attr[OFBA_MSPABI_Tag_ISA].i), - isa_type (out_attr[OFBA_MSPABI_Tag_ISA].i)); - result = FALSE; - } - - /* The code models must be the same. */ - if (in_attr[OFBA_MSPABI_Tag_Code_Model].i != - out_attr[OFBA_MSPABI_Tag_Code_Model].i) - { - _bfd_error_handler - (_("error: %B uses the %s code model whereas %B uses the %s code model"), - ibfd, first_input_bfd, - code_model (in_attr[OFBA_MSPABI_Tag_Code_Model].i), - code_model (out_attr[OFBA_MSPABI_Tag_Code_Model].i)); - result = FALSE; - } - - /* The large code model is only supported by the MSP430X. */ - if (in_attr[OFBA_MSPABI_Tag_Code_Model].i == 2 - && out_attr[OFBA_MSPABI_Tag_ISA].i != 2) - { - _bfd_error_handler - (_("error: %B uses the large code model but %B uses MSP430 instructions"), - ibfd, first_input_bfd); - result = FALSE; - } - - /* The data models must be the same. */ - if (in_attr[OFBA_MSPABI_Tag_Data_Model].i != - out_attr[OFBA_MSPABI_Tag_Data_Model].i) - { - _bfd_error_handler - (_("error: %B uses the %s data model whereas %B uses the %s data model"), - ibfd, first_input_bfd, - data_model (in_attr[OFBA_MSPABI_Tag_Data_Model].i), - data_model (out_attr[OFBA_MSPABI_Tag_Data_Model].i)); - result = FALSE; - } - - /* The small code model requires the use of the small data model. */ - if (in_attr[OFBA_MSPABI_Tag_Code_Model].i == 1 - && out_attr[OFBA_MSPABI_Tag_Data_Model].i != 1) - { - _bfd_error_handler - (_("error: %B uses the small code model but %B uses the %s data model"), - ibfd, first_input_bfd, - data_model (out_attr[OFBA_MSPABI_Tag_Data_Model].i)); - result = FALSE; - } - - /* The large data models are only supported by the MSP430X. */ - if (in_attr[OFBA_MSPABI_Tag_Data_Model].i > 1 - && out_attr[OFBA_MSPABI_Tag_ISA].i != 2) - { - _bfd_error_handler - (_("error: %B uses the %s data model but %B only uses MSP430 instructions"), - ibfd, first_input_bfd, - data_model (in_attr[OFBA_MSPABI_Tag_Data_Model].i)); - result = FALSE; - } - - return result; -} - -/* Merge backend specific data from an object file to the output - object file when linking. */ - -static bfd_boolean -elf32_msp430_merge_private_bfd_data (bfd * ibfd, bfd * obfd) -{ - /* Make sure that the machine number reflects the most - advanced version of the MSP architecture required. */ -#define max(a,b) ((a) > (b) ? (a) : (b)) - if (bfd_get_mach (ibfd) != bfd_get_mach (obfd)) - bfd_default_set_arch_mach (obfd, bfd_get_arch (obfd), - max (bfd_get_mach (ibfd), bfd_get_mach (obfd))); -#undef max - - return elf32_msp430_merge_mspabi_attributes (ibfd, obfd); -} - -/* Copy backend specific data from one object module to another. */ - -static bfd_boolean -elf32_msp430_copy_private_bfd_data (bfd *ibfd, bfd *obfd) -{ - /* Copy object attributes. */ - _bfd_elf_copy_obj_attributes (ibfd, obfd); - - return TRUE; -} - -static bfd_boolean -msp430_elf_is_target_special_symbol (bfd *abfd, asymbol *sym) -{ - return _bfd_elf_is_local_label_name (abfd, sym->name); -} - -/* This is gross. The MSP430 EABI says that (sec 11.5): - - "An implementation may choose to use Rel or Rela - type relocations for other relocations." - - But it also says that: - - "Certain relocations are identified as Rela only. [snip] - Where Rela is specified, an implementation must honor - this requirement." - - There is one relocation marked as requiring RELA - R_MSP430_ABS_HI16 - but - to keep things simple we choose to use RELA relocations throughout. The - problem is that the TI compiler generates REL relocations, so we have to - be able to accept those as well. */ - -#define elf_backend_may_use_rel_p 1 -#define elf_backend_may_use_rela_p 1 -#define elf_backend_default_use_rela_p 1 - -#undef elf_backend_obj_attrs_vendor -#define elf_backend_obj_attrs_vendor "mspabi" -#undef elf_backend_obj_attrs_section -#define elf_backend_obj_attrs_section ".MSP430.attributes" -#undef elf_backend_obj_attrs_section_type -#define elf_backend_obj_attrs_section_type SHT_MSP430_ATTRIBUTES -#define elf_backend_section_from_shdr elf32_msp430_section_from_shdr -#define elf_backend_obj_attrs_handle_unknown elf32_msp430_obj_attrs_handle_unknown -#undef elf_backend_obj_attrs_arg_type -#define elf_backend_obj_attrs_arg_type elf32_msp430_obj_attrs_arg_type -#define bfd_elf32_bfd_copy_private_bfd_data elf32_msp430_copy_private_bfd_data -#define bfd_elf32_bfd_merge_private_bfd_data elf32_msp430_merge_private_bfd_data - -#define ELF_ARCH bfd_arch_msp430 -#define ELF_MACHINE_CODE EM_MSP430 -#define ELF_MACHINE_ALT1 EM_MSP430_OLD -#define ELF_MAXPAGESIZE 4 -#define ELF_OSABI ELFOSABI_STANDALONE - -#define TARGET_LITTLE_SYM bfd_elf32_msp430_vec -#define TARGET_LITTLE_NAME "elf32-msp430" - -#define elf_info_to_howto msp430_info_to_howto_rela -#define elf_info_to_howto_rel NULL -#define elf_backend_relocate_section elf32_msp430_relocate_section -#define elf_backend_check_relocs elf32_msp430_check_relocs -#define elf_backend_can_gc_sections 1 -#define elf_backend_final_write_processing bfd_elf_msp430_final_write_processing -#define elf_backend_object_p elf32_msp430_object_p -#define elf_backend_post_process_headers _bfd_elf_set_osabi -#define bfd_elf32_bfd_relax_section msp430_elf_relax_section -#define bfd_elf32_bfd_is_target_special_symbol msp430_elf_is_target_special_symbol - -#undef elf32_bed -#define elf32_bed elf32_msp430_bed - -#include "elf32-target.h" - -/* The TI compiler sets the OSABI field to ELFOSABI_NONE. */ -#undef TARGET_LITTLE_SYM -#define TARGET_LITTLE_SYM bfd_elf32_msp430_ti_vec - -#undef elf32_bed -#define elf32_bed elf32_msp430_ti_bed - -#undef ELF_OSABI -#define ELF_OSABI ELFOSABI_NONE - -static const struct bfd_elf_special_section msp430_ti_elf_special_sections[] = -{ - /* prefix, prefix_length, suffix_len, type, attributes. */ - { STRING_COMMA_LEN (".TI.symbol.alias"), 0, SHT_MSP430_SYM_ALIASES, 0 }, - { STRING_COMMA_LEN (".TI.section.flags"), 0, SHT_MSP430_SEC_FLAGS, 0 }, - { STRING_COMMA_LEN ("_TI_build_attrib"), 0, SHT_MSP430_ATTRIBUTES, 0 }, - { NULL, 0, 0, 0, 0 } -}; - -#include "elf32-target.h" |