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- /* BFD back-end for Renesas Super-H COFF binaries.
- Copyright (C) 1993-2022 Free Software Foundation, Inc.
- Contributed by Cygnus Support.
- Written by Steve Chamberlain, <sac@cygnus.com>.
- Relaxing code written by Ian Lance Taylor, <ian@cygnus.com>.
- 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 "bfdlink.h"
- #include "coff/sh.h"
- #include "coff/internal.h"
- #undef bfd_pe_print_pdata
- #ifdef COFF_WITH_PE
- #include "coff/pe.h"
- #ifndef COFF_IMAGE_WITH_PE
- static bool sh_align_load_span
- (bfd *, asection *, bfd_byte *,
- bool (*) (bfd *, asection *, void *, bfd_byte *, bfd_vma),
- void *, bfd_vma **, bfd_vma *, bfd_vma, bfd_vma, bool *);
- #define _bfd_sh_align_load_span sh_align_load_span
- #endif
- #define bfd_pe_print_pdata _bfd_pe_print_ce_compressed_pdata
- #else
- #define bfd_pe_print_pdata NULL
- #endif /* COFF_WITH_PE. */
- #include "libcoff.h"
- /* Internal functions. */
- #ifdef COFF_WITH_PE
- /* Can't build import tables with 2**4 alignment. */
- #define COFF_DEFAULT_SECTION_ALIGNMENT_POWER 2
- #else
- /* Default section alignment to 2**4. */
- #define COFF_DEFAULT_SECTION_ALIGNMENT_POWER 4
- #endif
- #ifdef COFF_IMAGE_WITH_PE
- /* Align PE executables. */
- #define COFF_PAGE_SIZE 0x1000
- #endif
- /* Generate long file names. */
- #define COFF_LONG_FILENAMES
- #ifdef COFF_WITH_PE
- /* Return TRUE if this relocation should
- appear in the output .reloc section. */
- static bool
- in_reloc_p (bfd * abfd ATTRIBUTE_UNUSED,
- reloc_howto_type * howto)
- {
- return ! howto->pc_relative && howto->type != R_SH_IMAGEBASE;
- }
- #endif
- static bfd_reloc_status_type
- sh_reloc (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **);
- static bool
- sh_relocate_section (bfd *, struct bfd_link_info *, bfd *, asection *,
- bfd_byte *, struct internal_reloc *,
- struct internal_syment *, asection **);
- static bool
- sh_align_loads (bfd *, asection *, struct internal_reloc *,
- bfd_byte *, bool *);
- /* The supported relocations. There are a lot of relocations defined
- in coff/internal.h which we do not expect to ever see. */
- static reloc_howto_type sh_coff_howtos[] =
- {
- EMPTY_HOWTO (0),
- EMPTY_HOWTO (1),
- #ifdef COFF_WITH_PE
- /* Windows CE */
- HOWTO (R_SH_IMM32CE, /* type */
- 0, /* rightshift */
- 2, /* size (0 = byte, 1 = short, 2 = long) */
- 32, /* bitsize */
- false, /* pc_relative */
- 0, /* bitpos */
- complain_overflow_bitfield, /* complain_on_overflow */
- sh_reloc, /* special_function */
- "r_imm32ce", /* name */
- true, /* partial_inplace */
- 0xffffffff, /* src_mask */
- 0xffffffff, /* dst_mask */
- false), /* pcrel_offset */
- #else
- EMPTY_HOWTO (2),
- #endif
- EMPTY_HOWTO (3), /* R_SH_PCREL8 */
- EMPTY_HOWTO (4), /* R_SH_PCREL16 */
- EMPTY_HOWTO (5), /* R_SH_HIGH8 */
- EMPTY_HOWTO (6), /* R_SH_IMM24 */
- EMPTY_HOWTO (7), /* R_SH_LOW16 */
- EMPTY_HOWTO (8),
- EMPTY_HOWTO (9), /* R_SH_PCDISP8BY4 */
- HOWTO (R_SH_PCDISP8BY2, /* type */
- 1, /* rightshift */
- 1, /* size (0 = byte, 1 = short, 2 = long) */
- 8, /* bitsize */
- true, /* pc_relative */
- 0, /* bitpos */
- complain_overflow_signed, /* complain_on_overflow */
- sh_reloc, /* special_function */
- "r_pcdisp8by2", /* name */
- true, /* partial_inplace */
- 0xff, /* src_mask */
- 0xff, /* dst_mask */
- true), /* pcrel_offset */
- EMPTY_HOWTO (11), /* R_SH_PCDISP8 */
- HOWTO (R_SH_PCDISP, /* type */
- 1, /* rightshift */
- 1, /* size (0 = byte, 1 = short, 2 = long) */
- 12, /* bitsize */
- true, /* pc_relative */
- 0, /* bitpos */
- complain_overflow_signed, /* complain_on_overflow */
- sh_reloc, /* special_function */
- "r_pcdisp12by2", /* name */
- true, /* partial_inplace */
- 0xfff, /* src_mask */
- 0xfff, /* dst_mask */
- true), /* pcrel_offset */
- EMPTY_HOWTO (13),
- HOWTO (R_SH_IMM32, /* type */
- 0, /* rightshift */
- 2, /* size (0 = byte, 1 = short, 2 = long) */
- 32, /* bitsize */
- false, /* pc_relative */
- 0, /* bitpos */
- complain_overflow_bitfield, /* complain_on_overflow */
- sh_reloc, /* special_function */
- "r_imm32", /* name */
- true, /* partial_inplace */
- 0xffffffff, /* src_mask */
- 0xffffffff, /* dst_mask */
- false), /* pcrel_offset */
- EMPTY_HOWTO (15),
- #ifdef COFF_WITH_PE
- HOWTO (R_SH_IMAGEBASE, /* type */
- 0, /* rightshift */
- 2, /* size (0 = byte, 1 = short, 2 = long) */
- 32, /* bitsize */
- false, /* pc_relative */
- 0, /* bitpos */
- complain_overflow_bitfield, /* complain_on_overflow */
- sh_reloc, /* special_function */
- "rva32", /* name */
- true, /* partial_inplace */
- 0xffffffff, /* src_mask */
- 0xffffffff, /* dst_mask */
- false), /* pcrel_offset */
- #else
- EMPTY_HOWTO (16), /* R_SH_IMM8 */
- #endif
- EMPTY_HOWTO (17), /* R_SH_IMM8BY2 */
- EMPTY_HOWTO (18), /* R_SH_IMM8BY4 */
- EMPTY_HOWTO (19), /* R_SH_IMM4 */
- EMPTY_HOWTO (20), /* R_SH_IMM4BY2 */
- EMPTY_HOWTO (21), /* R_SH_IMM4BY4 */
- HOWTO (R_SH_PCRELIMM8BY2, /* type */
- 1, /* rightshift */
- 1, /* size (0 = byte, 1 = short, 2 = long) */
- 8, /* bitsize */
- true, /* pc_relative */
- 0, /* bitpos */
- complain_overflow_unsigned, /* complain_on_overflow */
- sh_reloc, /* special_function */
- "r_pcrelimm8by2", /* name */
- true, /* partial_inplace */
- 0xff, /* src_mask */
- 0xff, /* dst_mask */
- true), /* pcrel_offset */
- HOWTO (R_SH_PCRELIMM8BY4, /* type */
- 2, /* rightshift */
- 1, /* size (0 = byte, 1 = short, 2 = long) */
- 8, /* bitsize */
- true, /* pc_relative */
- 0, /* bitpos */
- complain_overflow_unsigned, /* complain_on_overflow */
- sh_reloc, /* special_function */
- "r_pcrelimm8by4", /* name */
- true, /* partial_inplace */
- 0xff, /* src_mask */
- 0xff, /* dst_mask */
- true), /* pcrel_offset */
- HOWTO (R_SH_IMM16, /* type */
- 0, /* rightshift */
- 1, /* size (0 = byte, 1 = short, 2 = long) */
- 16, /* bitsize */
- false, /* pc_relative */
- 0, /* bitpos */
- complain_overflow_bitfield, /* complain_on_overflow */
- sh_reloc, /* special_function */
- "r_imm16", /* name */
- true, /* partial_inplace */
- 0xffff, /* src_mask */
- 0xffff, /* dst_mask */
- false), /* pcrel_offset */
- HOWTO (R_SH_SWITCH16, /* type */
- 0, /* rightshift */
- 1, /* size (0 = byte, 1 = short, 2 = long) */
- 16, /* bitsize */
- false, /* pc_relative */
- 0, /* bitpos */
- complain_overflow_bitfield, /* complain_on_overflow */
- sh_reloc, /* special_function */
- "r_switch16", /* name */
- true, /* partial_inplace */
- 0xffff, /* src_mask */
- 0xffff, /* dst_mask */
- false), /* pcrel_offset */
- HOWTO (R_SH_SWITCH32, /* type */
- 0, /* rightshift */
- 2, /* size (0 = byte, 1 = short, 2 = long) */
- 32, /* bitsize */
- false, /* pc_relative */
- 0, /* bitpos */
- complain_overflow_bitfield, /* complain_on_overflow */
- sh_reloc, /* special_function */
- "r_switch32", /* name */
- true, /* partial_inplace */
- 0xffffffff, /* src_mask */
- 0xffffffff, /* dst_mask */
- false), /* pcrel_offset */
- HOWTO (R_SH_USES, /* type */
- 0, /* rightshift */
- 1, /* size (0 = byte, 1 = short, 2 = long) */
- 16, /* bitsize */
- false, /* pc_relative */
- 0, /* bitpos */
- complain_overflow_bitfield, /* complain_on_overflow */
- sh_reloc, /* special_function */
- "r_uses", /* name */
- true, /* partial_inplace */
- 0xffff, /* src_mask */
- 0xffff, /* dst_mask */
- false), /* pcrel_offset */
- HOWTO (R_SH_COUNT, /* type */
- 0, /* rightshift */
- 2, /* size (0 = byte, 1 = short, 2 = long) */
- 32, /* bitsize */
- false, /* pc_relative */
- 0, /* bitpos */
- complain_overflow_bitfield, /* complain_on_overflow */
- sh_reloc, /* special_function */
- "r_count", /* name */
- true, /* partial_inplace */
- 0xffffffff, /* src_mask */
- 0xffffffff, /* dst_mask */
- false), /* pcrel_offset */
- HOWTO (R_SH_ALIGN, /* type */
- 0, /* rightshift */
- 2, /* size (0 = byte, 1 = short, 2 = long) */
- 32, /* bitsize */
- false, /* pc_relative */
- 0, /* bitpos */
- complain_overflow_bitfield, /* complain_on_overflow */
- sh_reloc, /* special_function */
- "r_align", /* name */
- true, /* partial_inplace */
- 0xffffffff, /* src_mask */
- 0xffffffff, /* dst_mask */
- false), /* pcrel_offset */
- HOWTO (R_SH_CODE, /* type */
- 0, /* rightshift */
- 2, /* size (0 = byte, 1 = short, 2 = long) */
- 32, /* bitsize */
- false, /* pc_relative */
- 0, /* bitpos */
- complain_overflow_bitfield, /* complain_on_overflow */
- sh_reloc, /* special_function */
- "r_code", /* name */
- true, /* partial_inplace */
- 0xffffffff, /* src_mask */
- 0xffffffff, /* dst_mask */
- false), /* pcrel_offset */
- HOWTO (R_SH_DATA, /* type */
- 0, /* rightshift */
- 2, /* size (0 = byte, 1 = short, 2 = long) */
- 32, /* bitsize */
- false, /* pc_relative */
- 0, /* bitpos */
- complain_overflow_bitfield, /* complain_on_overflow */
- sh_reloc, /* special_function */
- "r_data", /* name */
- true, /* partial_inplace */
- 0xffffffff, /* src_mask */
- 0xffffffff, /* dst_mask */
- false), /* pcrel_offset */
- HOWTO (R_SH_LABEL, /* type */
- 0, /* rightshift */
- 2, /* size (0 = byte, 1 = short, 2 = long) */
- 32, /* bitsize */
- false, /* pc_relative */
- 0, /* bitpos */
- complain_overflow_bitfield, /* complain_on_overflow */
- sh_reloc, /* special_function */
- "r_label", /* name */
- true, /* partial_inplace */
- 0xffffffff, /* src_mask */
- 0xffffffff, /* dst_mask */
- false), /* pcrel_offset */
- HOWTO (R_SH_SWITCH8, /* type */
- 0, /* rightshift */
- 0, /* size (0 = byte, 1 = short, 2 = long) */
- 8, /* bitsize */
- false, /* pc_relative */
- 0, /* bitpos */
- complain_overflow_bitfield, /* complain_on_overflow */
- sh_reloc, /* special_function */
- "r_switch8", /* name */
- true, /* partial_inplace */
- 0xff, /* src_mask */
- 0xff, /* dst_mask */
- false) /* pcrel_offset */
- };
- #define SH_COFF_HOWTO_COUNT (sizeof sh_coff_howtos / sizeof sh_coff_howtos[0])
- /* Check for a bad magic number. */
- #define BADMAG(x) SHBADMAG(x)
- /* Customize coffcode.h (this is not currently used). */
- #define SH 1
- /* FIXME: This should not be set here. */
- #define __A_MAGIC_SET__
- #ifndef COFF_WITH_PE
- /* Swap the r_offset field in and out. */
- #define SWAP_IN_RELOC_OFFSET H_GET_32
- #define SWAP_OUT_RELOC_OFFSET H_PUT_32
- /* Swap out extra information in the reloc structure. */
- #define SWAP_OUT_RELOC_EXTRA(abfd, src, dst) \
- do \
- { \
- dst->r_stuff[0] = 'S'; \
- dst->r_stuff[1] = 'C'; \
- } \
- while (0)
- #endif
- /* Get the value of a symbol, when performing a relocation. */
- static long
- get_symbol_value (asymbol *symbol)
- {
- bfd_vma relocation;
- if (bfd_is_com_section (symbol->section))
- relocation = 0;
- else
- relocation = (symbol->value +
- symbol->section->output_section->vma +
- symbol->section->output_offset);
- return relocation;
- }
- #ifdef COFF_WITH_PE
- /* Convert an rtype to howto for the COFF backend linker.
- Copied from coff-i386. */
- #define coff_rtype_to_howto coff_sh_rtype_to_howto
- static reloc_howto_type *
- coff_sh_rtype_to_howto (bfd * abfd ATTRIBUTE_UNUSED,
- asection * sec,
- struct internal_reloc * rel,
- struct coff_link_hash_entry * h,
- struct internal_syment * sym,
- bfd_vma * addendp)
- {
- reloc_howto_type * howto;
- howto = sh_coff_howtos + rel->r_type;
- *addendp = 0;
- if (howto->pc_relative)
- *addendp += sec->vma;
- if (sym != NULL && sym->n_scnum == 0 && sym->n_value != 0)
- {
- /* This is a common symbol. The section contents include the
- size (sym->n_value) as an addend. The relocate_section
- function will be adding in the final value of the symbol. We
- need to subtract out the current size in order to get the
- correct result. */
- BFD_ASSERT (h != NULL);
- }
- if (howto->pc_relative)
- {
- *addendp -= 4;
- /* If the symbol is defined, then the generic code is going to
- add back the symbol value in order to cancel out an
- adjustment it made to the addend. However, we set the addend
- to 0 at the start of this function. We need to adjust here,
- to avoid the adjustment the generic code will make. FIXME:
- This is getting a bit hackish. */
- if (sym != NULL && sym->n_scnum != 0)
- *addendp -= sym->n_value;
- }
- if (rel->r_type == R_SH_IMAGEBASE)
- *addendp -= pe_data (sec->output_section->owner)->pe_opthdr.ImageBase;
- return howto;
- }
- #endif /* COFF_WITH_PE */
- /* This structure is used to map BFD reloc codes to SH PE relocs. */
- struct shcoff_reloc_map
- {
- bfd_reloc_code_real_type bfd_reloc_val;
- unsigned char shcoff_reloc_val;
- };
- #ifdef COFF_WITH_PE
- /* An array mapping BFD reloc codes to SH PE relocs. */
- static const struct shcoff_reloc_map sh_reloc_map[] =
- {
- { BFD_RELOC_32, R_SH_IMM32CE },
- { BFD_RELOC_RVA, R_SH_IMAGEBASE },
- { BFD_RELOC_CTOR, R_SH_IMM32CE },
- };
- #else
- /* An array mapping BFD reloc codes to SH PE relocs. */
- static const struct shcoff_reloc_map sh_reloc_map[] =
- {
- { BFD_RELOC_32, R_SH_IMM32 },
- { BFD_RELOC_CTOR, R_SH_IMM32 },
- };
- #endif
- /* Given a BFD reloc code, return the howto structure for the
- corresponding SH PE reloc. */
- #define coff_bfd_reloc_type_lookup sh_coff_reloc_type_lookup
- #define coff_bfd_reloc_name_lookup sh_coff_reloc_name_lookup
- static reloc_howto_type *
- sh_coff_reloc_type_lookup (bfd *abfd,
- bfd_reloc_code_real_type code)
- {
- unsigned int i;
- for (i = ARRAY_SIZE (sh_reloc_map); i--;)
- if (sh_reloc_map[i].bfd_reloc_val == code)
- return &sh_coff_howtos[(int) sh_reloc_map[i].shcoff_reloc_val];
- _bfd_error_handler (_("%pB: unsupported relocation type %#x"),
- abfd, (unsigned int) code);
- return NULL;
- }
- static reloc_howto_type *
- sh_coff_reloc_name_lookup (bfd *abfd ATTRIBUTE_UNUSED,
- const char *r_name)
- {
- unsigned int i;
- for (i = 0; i < sizeof (sh_coff_howtos) / sizeof (sh_coff_howtos[0]); i++)
- if (sh_coff_howtos[i].name != NULL
- && strcasecmp (sh_coff_howtos[i].name, r_name) == 0)
- return &sh_coff_howtos[i];
- return NULL;
- }
- /* This macro is used in coffcode.h to get the howto corresponding to
- an internal reloc. */
- #define RTYPE2HOWTO(relent, internal) \
- ((relent)->howto = \
- ((internal)->r_type < SH_COFF_HOWTO_COUNT \
- ? &sh_coff_howtos[(internal)->r_type] \
- : (reloc_howto_type *) NULL))
- /* This is the same as the macro in coffcode.h, except that it copies
- r_offset into reloc_entry->addend for some relocs. */
- #define CALC_ADDEND(abfd, ptr, reloc, cache_ptr) \
- { \
- coff_symbol_type *coffsym = (coff_symbol_type *) NULL; \
- if (ptr && bfd_asymbol_bfd (ptr) != abfd) \
- coffsym = (obj_symbols (abfd) \
- + (cache_ptr->sym_ptr_ptr - symbols)); \
- else if (ptr) \
- coffsym = coff_symbol_from (ptr); \
- if (coffsym != (coff_symbol_type *) NULL \
- && coffsym->native->u.syment.n_scnum == 0) \
- cache_ptr->addend = 0; \
- else if (ptr && bfd_asymbol_bfd (ptr) == abfd \
- && ptr->section != (asection *) NULL) \
- cache_ptr->addend = - (ptr->section->vma + ptr->value); \
- else \
- cache_ptr->addend = 0; \
- if ((reloc).r_type == R_SH_SWITCH8 \
- || (reloc).r_type == R_SH_SWITCH16 \
- || (reloc).r_type == R_SH_SWITCH32 \
- || (reloc).r_type == R_SH_USES \
- || (reloc).r_type == R_SH_COUNT \
- || (reloc).r_type == R_SH_ALIGN) \
- cache_ptr->addend = (reloc).r_offset; \
- }
- /* This is the howto function for the SH relocations. */
- static bfd_reloc_status_type
- sh_reloc (bfd * abfd,
- arelent * reloc_entry,
- asymbol * symbol_in,
- void * data,
- asection * input_section,
- bfd * output_bfd,
- char ** error_message ATTRIBUTE_UNUSED)
- {
- bfd_vma insn;
- bfd_vma sym_value;
- unsigned short r_type;
- bfd_vma addr = reloc_entry->address;
- bfd_byte *hit_data = addr + (bfd_byte *) data;
- r_type = reloc_entry->howto->type;
- if (output_bfd != NULL)
- {
- /* Partial linking--do nothing. */
- reloc_entry->address += input_section->output_offset;
- return bfd_reloc_ok;
- }
- /* Almost all relocs have to do with relaxing. If any work must be
- done for them, it has been done in sh_relax_section. */
- if (r_type != R_SH_IMM32
- #ifdef COFF_WITH_PE
- && r_type != R_SH_IMM32CE
- && r_type != R_SH_IMAGEBASE
- #endif
- && (r_type != R_SH_PCDISP
- || (symbol_in->flags & BSF_LOCAL) != 0))
- return bfd_reloc_ok;
- if (symbol_in != NULL
- && bfd_is_und_section (symbol_in->section))
- return bfd_reloc_undefined;
- if (addr > input_section->size)
- return bfd_reloc_outofrange;
- sym_value = get_symbol_value (symbol_in);
- switch (r_type)
- {
- case R_SH_IMM32:
- #ifdef COFF_WITH_PE
- case R_SH_IMM32CE:
- #endif
- insn = bfd_get_32 (abfd, hit_data);
- insn += sym_value + reloc_entry->addend;
- bfd_put_32 (abfd, insn, hit_data);
- break;
- #ifdef COFF_WITH_PE
- case R_SH_IMAGEBASE:
- insn = bfd_get_32 (abfd, hit_data);
- insn += sym_value + reloc_entry->addend;
- insn -= pe_data (input_section->output_section->owner)->pe_opthdr.ImageBase;
- bfd_put_32 (abfd, insn, hit_data);
- break;
- #endif
- case R_SH_PCDISP:
- insn = bfd_get_16 (abfd, hit_data);
- sym_value += reloc_entry->addend;
- sym_value -= (input_section->output_section->vma
- + input_section->output_offset
- + addr
- + 4);
- sym_value += (((insn & 0xfff) ^ 0x800) - 0x800) << 1;
- insn = (insn & 0xf000) | ((sym_value >> 1) & 0xfff);
- bfd_put_16 (abfd, insn, hit_data);
- if (sym_value + 0x1000 >= 0x2000 || (sym_value & 1) != 0)
- return bfd_reloc_overflow;
- break;
- default:
- abort ();
- break;
- }
- return bfd_reloc_ok;
- }
- #define coff_bfd_merge_private_bfd_data _bfd_generic_verify_endian_match
- /* We can do relaxing. */
- #define coff_bfd_relax_section sh_relax_section
- /* We use the special COFF backend linker. */
- #define coff_relocate_section sh_relocate_section
- /* When relaxing, we need to use special code to get the relocated
- section contents. */
- #define coff_bfd_get_relocated_section_contents \
- sh_coff_get_relocated_section_contents
- #include "coffcode.h"
- static bool
- sh_relax_delete_bytes (bfd *, asection *, bfd_vma, int);
- /* This function handles relaxing on the SH.
- Function calls on the SH look like this:
- movl L1,r0
- ...
- jsr @r0
- ...
- L1:
- .long function
- The compiler and assembler will cooperate to create R_SH_USES
- relocs on the jsr instructions. The r_offset field of the
- R_SH_USES reloc is the PC relative offset to the instruction which
- loads the register (the r_offset field is computed as though it
- were a jump instruction, so the offset value is actually from four
- bytes past the instruction). The linker can use this reloc to
- determine just which function is being called, and thus decide
- whether it is possible to replace the jsr with a bsr.
- If multiple function calls are all based on a single register load
- (i.e., the same function is called multiple times), the compiler
- guarantees that each function call will have an R_SH_USES reloc.
- Therefore, if the linker is able to convert each R_SH_USES reloc
- which refers to that address, it can safely eliminate the register
- load.
- When the assembler creates an R_SH_USES reloc, it examines it to
- determine which address is being loaded (L1 in the above example).
- It then counts the number of references to that address, and
- creates an R_SH_COUNT reloc at that address. The r_offset field of
- the R_SH_COUNT reloc will be the number of references. If the
- linker is able to eliminate a register load, it can use the
- R_SH_COUNT reloc to see whether it can also eliminate the function
- address.
- SH relaxing also handles another, unrelated, matter. On the SH, if
- a load or store instruction is not aligned on a four byte boundary,
- the memory cycle interferes with the 32 bit instruction fetch,
- causing a one cycle bubble in the pipeline. Therefore, we try to
- align load and store instructions on four byte boundaries if we
- can, by swapping them with one of the adjacent instructions. */
- static bool
- sh_relax_section (bfd *abfd,
- asection *sec,
- struct bfd_link_info *link_info,
- bool *again)
- {
- struct internal_reloc *internal_relocs;
- bool have_code;
- struct internal_reloc *irel, *irelend;
- bfd_byte *contents = NULL;
- *again = false;
- if (bfd_link_relocatable (link_info)
- || (sec->flags & SEC_RELOC) == 0
- || sec->reloc_count == 0)
- return true;
- if (coff_section_data (abfd, sec) == NULL)
- {
- size_t amt = sizeof (struct coff_section_tdata);
- sec->used_by_bfd = bfd_zalloc (abfd, amt);
- if (sec->used_by_bfd == NULL)
- return false;
- }
- internal_relocs = (_bfd_coff_read_internal_relocs
- (abfd, sec, link_info->keep_memory,
- (bfd_byte *) NULL, false,
- (struct internal_reloc *) NULL));
- if (internal_relocs == NULL)
- goto error_return;
- have_code = false;
- irelend = internal_relocs + sec->reloc_count;
- for (irel = internal_relocs; irel < irelend; irel++)
- {
- bfd_vma laddr, paddr, symval;
- unsigned short insn;
- struct internal_reloc *irelfn, *irelscan, *irelcount;
- struct internal_syment sym;
- bfd_signed_vma foff;
- if (irel->r_type == R_SH_CODE)
- have_code = true;
- if (irel->r_type != R_SH_USES)
- continue;
- /* Get the section contents. */
- if (contents == NULL)
- {
- if (coff_section_data (abfd, sec)->contents != NULL)
- contents = coff_section_data (abfd, sec)->contents;
- else
- {
- if (!bfd_malloc_and_get_section (abfd, sec, &contents))
- goto error_return;
- }
- }
- /* The r_offset field of the R_SH_USES reloc will point us to
- the register load. The 4 is because the r_offset field is
- computed as though it were a jump offset, which are based
- from 4 bytes after the jump instruction. */
- laddr = irel->r_vaddr - sec->vma + 4;
- /* Careful to sign extend the 32-bit offset. */
- laddr += ((irel->r_offset & 0xffffffff) ^ 0x80000000) - 0x80000000;
- if (laddr >= sec->size)
- {
- /* xgettext: c-format */
- _bfd_error_handler
- (_("%pB: %#" PRIx64 ": warning: bad R_SH_USES offset"),
- abfd, (uint64_t) irel->r_vaddr);
- continue;
- }
- insn = bfd_get_16 (abfd, contents + laddr);
- /* If the instruction is not mov.l NN,rN, we don't know what to do. */
- if ((insn & 0xf000) != 0xd000)
- {
- _bfd_error_handler
- /* xgettext: c-format */
- (_("%pB: %#" PRIx64 ": warning: R_SH_USES points to unrecognized insn %#x"),
- abfd, (uint64_t) irel->r_vaddr, insn);
- continue;
- }
- /* Get the address from which the register is being loaded. The
- displacement in the mov.l instruction is quadrupled. It is a
- displacement from four bytes after the movl instruction, but,
- before adding in the PC address, two least significant bits
- of the PC are cleared. We assume that the section is aligned
- on a four byte boundary. */
- paddr = insn & 0xff;
- paddr *= 4;
- paddr += (laddr + 4) &~ (bfd_vma) 3;
- if (paddr >= sec->size)
- {
- _bfd_error_handler
- /* xgettext: c-format */
- (_("%pB: %#" PRIx64 ": warning: bad R_SH_USES load offset"),
- abfd, (uint64_t) irel->r_vaddr);
- continue;
- }
- /* Get the reloc for the address from which the register is
- being loaded. This reloc will tell us which function is
- actually being called. */
- paddr += sec->vma;
- for (irelfn = internal_relocs; irelfn < irelend; irelfn++)
- if (irelfn->r_vaddr == paddr
- #ifdef COFF_WITH_PE
- && (irelfn->r_type == R_SH_IMM32
- || irelfn->r_type == R_SH_IMM32CE
- || irelfn->r_type == R_SH_IMAGEBASE)
- #else
- && irelfn->r_type == R_SH_IMM32
- #endif
- )
- break;
- if (irelfn >= irelend)
- {
- _bfd_error_handler
- /* xgettext: c-format */
- (_("%pB: %#" PRIx64 ": warning: could not find expected reloc"),
- abfd, (uint64_t) paddr);
- continue;
- }
- /* Get the value of the symbol referred to by the reloc. */
- if (! _bfd_coff_get_external_symbols (abfd))
- goto error_return;
- bfd_coff_swap_sym_in (abfd,
- ((bfd_byte *) obj_coff_external_syms (abfd)
- + (irelfn->r_symndx
- * bfd_coff_symesz (abfd))),
- &sym);
- if (sym.n_scnum != 0 && sym.n_scnum != sec->target_index)
- {
- _bfd_error_handler
- /* xgettext: c-format */
- (_("%pB: %#" PRIx64 ": warning: symbol in unexpected section"),
- abfd, (uint64_t) paddr);
- continue;
- }
- if (sym.n_sclass != C_EXT)
- {
- symval = (sym.n_value
- - sec->vma
- + sec->output_section->vma
- + sec->output_offset);
- }
- else
- {
- struct coff_link_hash_entry *h;
- h = obj_coff_sym_hashes (abfd)[irelfn->r_symndx];
- 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);
- }
- symval += bfd_get_32 (abfd, contents + paddr - sec->vma);
- /* See if this function call can be shortened. */
- foff = (symval
- - (irel->r_vaddr
- - sec->vma
- + sec->output_section->vma
- + sec->output_offset
- + 4));
- if (foff < -0x1000 || foff >= 0x1000)
- {
- /* After all that work, we can't shorten this function call. */
- continue;
- }
- /* Shorten the function call. */
- /* 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. */
- coff_section_data (abfd, sec)->relocs = internal_relocs;
- coff_section_data (abfd, sec)->keep_relocs = true;
- coff_section_data (abfd, sec)->contents = contents;
- coff_section_data (abfd, sec)->keep_contents = true;
- obj_coff_keep_syms (abfd) = true;
- /* Replace the jsr with a bsr. */
- /* Change the R_SH_USES reloc into an R_SH_PCDISP reloc, and
- replace the jsr with a bsr. */
- irel->r_type = R_SH_PCDISP;
- irel->r_symndx = irelfn->r_symndx;
- if (sym.n_sclass != C_EXT)
- {
- /* If this needs to be changed because of future relaxing,
- it will be handled here like other internal PCDISP
- relocs. */
- bfd_put_16 (abfd,
- (bfd_vma) 0xb000 | ((foff >> 1) & 0xfff),
- contents + irel->r_vaddr - sec->vma);
- }
- else
- {
- /* We can't fully resolve this yet, because the external
- symbol value may be changed by future relaxing. We let
- the final link phase handle it. */
- bfd_put_16 (abfd, (bfd_vma) 0xb000,
- contents + irel->r_vaddr - sec->vma);
- }
- /* See if there is another R_SH_USES reloc referring to the same
- register load. */
- for (irelscan = internal_relocs; irelscan < irelend; irelscan++)
- if (irelscan->r_type == R_SH_USES
- && laddr == irelscan->r_vaddr - sec->vma + 4 + irelscan->r_offset)
- break;
- if (irelscan < irelend)
- {
- /* Some other function call depends upon this register load,
- and we have not yet converted that function call.
- Indeed, we may never be able to convert it. There is
- nothing else we can do at this point. */
- continue;
- }
- /* Look for a R_SH_COUNT reloc on the location where the
- function address is stored. Do this before deleting any
- bytes, to avoid confusion about the address. */
- for (irelcount = internal_relocs; irelcount < irelend; irelcount++)
- if (irelcount->r_vaddr == paddr
- && irelcount->r_type == R_SH_COUNT)
- break;
- /* Delete the register load. */
- if (! sh_relax_delete_bytes (abfd, sec, laddr, 2))
- goto error_return;
- /* That will change things, so, just in case it permits some
- other function call to come within range, we should relax
- again. Note that this is not required, and it may be slow. */
- *again = true;
- /* Now check whether we got a COUNT reloc. */
- if (irelcount >= irelend)
- {
- _bfd_error_handler
- /* xgettext: c-format */
- (_("%pB: %#" PRIx64 ": warning: could not find expected COUNT reloc"),
- abfd, (uint64_t) paddr);
- continue;
- }
- /* The number of uses is stored in the r_offset field. We've
- just deleted one. */
- if (irelcount->r_offset == 0)
- {
- /* xgettext: c-format */
- _bfd_error_handler (_("%pB: %#" PRIx64 ": warning: bad count"),
- abfd, (uint64_t) paddr);
- continue;
- }
- --irelcount->r_offset;
- /* If there are no more uses, we can delete the address. Reload
- the address from irelfn, in case it was changed by the
- previous call to sh_relax_delete_bytes. */
- if (irelcount->r_offset == 0)
- {
- if (! sh_relax_delete_bytes (abfd, sec,
- irelfn->r_vaddr - sec->vma, 4))
- goto error_return;
- }
- /* We've done all we can with that function call. */
- }
- /* Look for load and store instructions that we can align on four
- byte boundaries. */
- if (have_code)
- {
- bool swapped;
- /* Get the section contents. */
- if (contents == NULL)
- {
- if (coff_section_data (abfd, sec)->contents != NULL)
- contents = coff_section_data (abfd, sec)->contents;
- else
- {
- if (!bfd_malloc_and_get_section (abfd, sec, &contents))
- goto error_return;
- }
- }
- if (! sh_align_loads (abfd, sec, internal_relocs, contents, &swapped))
- goto error_return;
- if (swapped)
- {
- coff_section_data (abfd, sec)->relocs = internal_relocs;
- coff_section_data (abfd, sec)->keep_relocs = true;
- coff_section_data (abfd, sec)->contents = contents;
- coff_section_data (abfd, sec)->keep_contents = true;
- obj_coff_keep_syms (abfd) = true;
- }
- }
- if (internal_relocs != NULL
- && internal_relocs != coff_section_data (abfd, sec)->relocs)
- {
- if (! link_info->keep_memory)
- free (internal_relocs);
- else
- coff_section_data (abfd, sec)->relocs = internal_relocs;
- }
- if (contents != NULL && contents != coff_section_data (abfd, sec)->contents)
- {
- if (! link_info->keep_memory)
- free (contents);
- else
- /* Cache the section contents for coff_link_input_bfd. */
- coff_section_data (abfd, sec)->contents = contents;
- }
- return true;
- error_return:
- if (internal_relocs != coff_section_data (abfd, sec)->relocs)
- free (internal_relocs);
- if (contents != coff_section_data (abfd, sec)->contents)
- free (contents);
- return false;
- }
- /* Delete some bytes from a section while relaxing. */
- static bool
- sh_relax_delete_bytes (bfd *abfd,
- asection *sec,
- bfd_vma addr,
- int count)
- {
- bfd_byte *contents;
- struct internal_reloc *irel, *irelend;
- struct internal_reloc *irelalign;
- bfd_vma toaddr;
- bfd_byte *esym, *esymend;
- bfd_size_type symesz;
- struct coff_link_hash_entry **sym_hash;
- asection *o;
- contents = coff_section_data (abfd, sec)->contents;
- /* The deletion must stop at the next ALIGN reloc for an alignment
- power larger than the number of bytes we are deleting. */
- irelalign = NULL;
- toaddr = sec->size;
- irel = coff_section_data (abfd, sec)->relocs;
- irelend = irel + sec->reloc_count;
- for (; irel < irelend; irel++)
- {
- if (irel->r_type == R_SH_ALIGN
- && irel->r_vaddr - sec->vma > addr
- && count < (1 << irel->r_offset))
- {
- irelalign = irel;
- toaddr = irel->r_vaddr - sec->vma;
- break;
- }
- }
- /* Actually delete the bytes. */
- memmove (contents + addr, contents + addr + count,
- (size_t) (toaddr - addr - count));
- if (irelalign == NULL)
- sec->size -= count;
- else
- {
- int i;
- #define NOP_OPCODE (0x0009)
- BFD_ASSERT ((count & 1) == 0);
- for (i = 0; i < count; i += 2)
- bfd_put_16 (abfd, (bfd_vma) NOP_OPCODE, contents + toaddr - count + i);
- }
- /* Adjust all the relocs. */
- for (irel = coff_section_data (abfd, sec)->relocs; irel < irelend; irel++)
- {
- bfd_vma nraddr, stop;
- bfd_vma start = 0;
- int insn = 0;
- struct internal_syment sym;
- int off, adjust, oinsn;
- bfd_signed_vma voff = 0;
- bool overflow;
- /* Get the new reloc address. */
- nraddr = irel->r_vaddr - sec->vma;
- if ((irel->r_vaddr - sec->vma > addr
- && irel->r_vaddr - sec->vma < toaddr)
- || (irel->r_type == R_SH_ALIGN
- && irel->r_vaddr - sec->vma == toaddr))
- nraddr -= count;
- /* See if this reloc was for the bytes we have deleted, in which
- case we no longer care about it. Don't delete relocs which
- represent addresses, though. */
- if (irel->r_vaddr - sec->vma >= addr
- && irel->r_vaddr - sec->vma < addr + count
- && irel->r_type != R_SH_ALIGN
- && irel->r_type != R_SH_CODE
- && irel->r_type != R_SH_DATA
- && irel->r_type != R_SH_LABEL)
- irel->r_type = R_SH_UNUSED;
- /* If this is a PC relative reloc, see if the range it covers
- includes the bytes we have deleted. */
- switch (irel->r_type)
- {
- default:
- break;
- case R_SH_PCDISP8BY2:
- case R_SH_PCDISP:
- case R_SH_PCRELIMM8BY2:
- case R_SH_PCRELIMM8BY4:
- start = irel->r_vaddr - sec->vma;
- insn = bfd_get_16 (abfd, contents + nraddr);
- break;
- }
- switch (irel->r_type)
- {
- default:
- start = stop = addr;
- break;
- case R_SH_IMM32:
- #ifdef COFF_WITH_PE
- case R_SH_IMM32CE:
- case R_SH_IMAGEBASE:
- #endif
- /* If this reloc is against a symbol defined in this
- section, and the symbol will not be adjusted below, we
- must check the addend to see it will put the value in
- range to be adjusted, and hence must be changed. */
- bfd_coff_swap_sym_in (abfd,
- ((bfd_byte *) obj_coff_external_syms (abfd)
- + (irel->r_symndx
- * bfd_coff_symesz (abfd))),
- &sym);
- if (sym.n_sclass != C_EXT
- && sym.n_scnum == sec->target_index
- && ((bfd_vma) sym.n_value <= addr
- || (bfd_vma) sym.n_value >= toaddr))
- {
- bfd_vma val;
- val = bfd_get_32 (abfd, contents + nraddr);
- val += sym.n_value;
- if (val > addr && val < toaddr)
- bfd_put_32 (abfd, val - count, contents + nraddr);
- }
- start = stop = addr;
- break;
- case R_SH_PCDISP8BY2:
- off = insn & 0xff;
- if (off & 0x80)
- off -= 0x100;
- stop = (bfd_vma) ((bfd_signed_vma) start + 4 + off * 2);
- break;
- case R_SH_PCDISP:
- bfd_coff_swap_sym_in (abfd,
- ((bfd_byte *) obj_coff_external_syms (abfd)
- + (irel->r_symndx
- * bfd_coff_symesz (abfd))),
- &sym);
- if (sym.n_sclass == C_EXT)
- start = stop = addr;
- else
- {
- off = insn & 0xfff;
- if (off & 0x800)
- off -= 0x1000;
- stop = (bfd_vma) ((bfd_signed_vma) start + 4 + off * 2);
- }
- break;
- case R_SH_PCRELIMM8BY2:
- off = insn & 0xff;
- stop = start + 4 + off * 2;
- break;
- case R_SH_PCRELIMM8BY4:
- off = insn & 0xff;
- stop = (start &~ (bfd_vma) 3) + 4 + off * 4;
- break;
- case R_SH_SWITCH8:
- case R_SH_SWITCH16:
- case R_SH_SWITCH32:
- /* These relocs types represent
- .word L2-L1
- The r_offset field holds the difference between the reloc
- address and L1. That is the start of the reloc, and
- adding in the contents gives us the top. We must adjust
- both the r_offset field and the section contents. */
- start = irel->r_vaddr - sec->vma;
- stop = (bfd_vma) ((bfd_signed_vma) start - (long) irel->r_offset);
- if (start > addr
- && start < toaddr
- && (stop <= addr || stop >= toaddr))
- irel->r_offset += count;
- else if (stop > addr
- && stop < toaddr
- && (start <= addr || start >= toaddr))
- irel->r_offset -= count;
- start = stop;
- if (irel->r_type == R_SH_SWITCH16)
- voff = bfd_get_signed_16 (abfd, contents + nraddr);
- else if (irel->r_type == R_SH_SWITCH8)
- voff = bfd_get_8 (abfd, contents + nraddr);
- else
- voff = bfd_get_signed_32 (abfd, contents + nraddr);
- stop = (bfd_vma) ((bfd_signed_vma) start + voff);
- break;
- case R_SH_USES:
- start = irel->r_vaddr - sec->vma;
- stop = (bfd_vma) ((bfd_signed_vma) start
- + (long) irel->r_offset
- + 4);
- break;
- }
- if (start > addr
- && start < toaddr
- && (stop <= addr || stop >= toaddr))
- adjust = count;
- else if (stop > addr
- && stop < toaddr
- && (start <= addr || start >= toaddr))
- adjust = - count;
- else
- adjust = 0;
- if (adjust != 0)
- {
- oinsn = insn;
- overflow = false;
- switch (irel->r_type)
- {
- default:
- abort ();
- break;
- case R_SH_PCDISP8BY2:
- case R_SH_PCRELIMM8BY2:
- insn += adjust / 2;
- if ((oinsn & 0xff00) != (insn & 0xff00))
- overflow = true;
- bfd_put_16 (abfd, (bfd_vma) insn, contents + nraddr);
- break;
- case R_SH_PCDISP:
- insn += adjust / 2;
- if ((oinsn & 0xf000) != (insn & 0xf000))
- overflow = true;
- bfd_put_16 (abfd, (bfd_vma) insn, contents + nraddr);
- break;
- case R_SH_PCRELIMM8BY4:
- BFD_ASSERT (adjust == count || count >= 4);
- if (count >= 4)
- insn += adjust / 4;
- else
- {
- if ((irel->r_vaddr & 3) == 0)
- ++insn;
- }
- if ((oinsn & 0xff00) != (insn & 0xff00))
- overflow = true;
- bfd_put_16 (abfd, (bfd_vma) insn, contents + nraddr);
- break;
- case R_SH_SWITCH8:
- voff += adjust;
- if (voff < 0 || voff >= 0xff)
- overflow = true;
- bfd_put_8 (abfd, (bfd_vma) voff, contents + nraddr);
- break;
- case R_SH_SWITCH16:
- voff += adjust;
- if (voff < - 0x8000 || voff >= 0x8000)
- overflow = true;
- bfd_put_signed_16 (abfd, (bfd_vma) voff, contents + nraddr);
- break;
- case R_SH_SWITCH32:
- voff += adjust;
- bfd_put_signed_32 (abfd, (bfd_vma) voff, contents + nraddr);
- break;
- case R_SH_USES:
- irel->r_offset += adjust;
- break;
- }
- if (overflow)
- {
- _bfd_error_handler
- /* xgettext: c-format */
- (_("%pB: %#" PRIx64 ": fatal: reloc overflow while relaxing"),
- abfd, (uint64_t) irel->r_vaddr);
- bfd_set_error (bfd_error_bad_value);
- return false;
- }
- }
- irel->r_vaddr = nraddr + sec->vma;
- }
- /* Look through all the other sections. If there contain any IMM32
- relocs against internal symbols which we are not going to adjust
- below, we may need to adjust the addends. */
- for (o = abfd->sections; o != NULL; o = o->next)
- {
- struct internal_reloc *internal_relocs;
- struct internal_reloc *irelscan, *irelscanend;
- bfd_byte *ocontents;
- if (o == sec
- || (o->flags & SEC_RELOC) == 0
- || o->reloc_count == 0)
- continue;
- /* We always cache the relocs. Perhaps, if info->keep_memory is
- FALSE, we should free them, if we are permitted to, when we
- leave sh_coff_relax_section. */
- internal_relocs = (_bfd_coff_read_internal_relocs
- (abfd, o, true, (bfd_byte *) NULL, false,
- (struct internal_reloc *) NULL));
- if (internal_relocs == NULL)
- return false;
- ocontents = NULL;
- irelscanend = internal_relocs + o->reloc_count;
- for (irelscan = internal_relocs; irelscan < irelscanend; irelscan++)
- {
- struct internal_syment sym;
- #ifdef COFF_WITH_PE
- if (irelscan->r_type != R_SH_IMM32
- && irelscan->r_type != R_SH_IMAGEBASE
- && irelscan->r_type != R_SH_IMM32CE)
- #else
- if (irelscan->r_type != R_SH_IMM32)
- #endif
- continue;
- bfd_coff_swap_sym_in (abfd,
- ((bfd_byte *) obj_coff_external_syms (abfd)
- + (irelscan->r_symndx
- * bfd_coff_symesz (abfd))),
- &sym);
- if (sym.n_sclass != C_EXT
- && sym.n_scnum == sec->target_index
- && ((bfd_vma) sym.n_value <= addr
- || (bfd_vma) sym.n_value >= toaddr))
- {
- bfd_vma val;
- if (ocontents == NULL)
- {
- if (coff_section_data (abfd, o)->contents != NULL)
- ocontents = coff_section_data (abfd, o)->contents;
- else
- {
- if (!bfd_malloc_and_get_section (abfd, o, &ocontents))
- return false;
- /* We always cache the section contents.
- Perhaps, if info->keep_memory is FALSE, we
- should free them, if we are permitted to,
- when we leave sh_coff_relax_section. */
- coff_section_data (abfd, o)->contents = ocontents;
- }
- }
- val = bfd_get_32 (abfd, ocontents + irelscan->r_vaddr - o->vma);
- val += sym.n_value;
- if (val > addr && val < toaddr)
- bfd_put_32 (abfd, val - count,
- ocontents + irelscan->r_vaddr - o->vma);
- coff_section_data (abfd, o)->keep_contents = true;
- }
- }
- }
- /* Adjusting the internal symbols will not work if something has
- already retrieved the generic symbols. It would be possible to
- make this work by adjusting the generic symbols at the same time.
- However, this case should not arise in normal usage. */
- if (obj_symbols (abfd) != NULL
- || obj_raw_syments (abfd) != NULL)
- {
- _bfd_error_handler
- (_("%pB: fatal: generic symbols retrieved before relaxing"), abfd);
- bfd_set_error (bfd_error_invalid_operation);
- return false;
- }
- /* Adjust all the symbols. */
- sym_hash = obj_coff_sym_hashes (abfd);
- symesz = bfd_coff_symesz (abfd);
- esym = (bfd_byte *) obj_coff_external_syms (abfd);
- esymend = esym + obj_raw_syment_count (abfd) * symesz;
- while (esym < esymend)
- {
- struct internal_syment isym;
- bfd_coff_swap_sym_in (abfd, esym, &isym);
- if (isym.n_scnum == sec->target_index
- && (bfd_vma) isym.n_value > addr
- && (bfd_vma) isym.n_value < toaddr)
- {
- isym.n_value -= count;
- bfd_coff_swap_sym_out (abfd, &isym, esym);
- if (*sym_hash != NULL)
- {
- BFD_ASSERT ((*sym_hash)->root.type == bfd_link_hash_defined
- || (*sym_hash)->root.type == bfd_link_hash_defweak);
- BFD_ASSERT ((*sym_hash)->root.u.def.value >= addr
- && (*sym_hash)->root.u.def.value < toaddr);
- (*sym_hash)->root.u.def.value -= count;
- }
- }
- esym += (isym.n_numaux + 1) * symesz;
- sym_hash += isym.n_numaux + 1;
- }
- /* See if we can move the ALIGN reloc forward. We have adjusted
- r_vaddr for it already. */
- if (irelalign != NULL)
- {
- bfd_vma alignto, alignaddr;
- alignto = BFD_ALIGN (toaddr, 1 << irelalign->r_offset);
- alignaddr = BFD_ALIGN (irelalign->r_vaddr - sec->vma,
- 1 << irelalign->r_offset);
- if (alignto != alignaddr)
- {
- /* Tail recursion. */
- return sh_relax_delete_bytes (abfd, sec, alignaddr,
- (int) (alignto - alignaddr));
- }
- }
- return true;
- }
- /* This is yet another version of the SH opcode table, used to rapidly
- get information about a particular instruction. */
- /* The opcode map is represented by an array of these structures. The
- array is indexed by the high order four bits in the instruction. */
- struct sh_major_opcode
- {
- /* A pointer to the instruction list. This is an array which
- contains all the instructions with this major opcode. */
- const struct sh_minor_opcode *minor_opcodes;
- /* The number of elements in minor_opcodes. */
- unsigned short count;
- };
- /* This structure holds information for a set of SH opcodes. The
- instruction code is anded with the mask value, and the resulting
- value is used to search the order opcode list. */
- struct sh_minor_opcode
- {
- /* The sorted opcode list. */
- const struct sh_opcode *opcodes;
- /* The number of elements in opcodes. */
- unsigned short count;
- /* The mask value to use when searching the opcode list. */
- unsigned short mask;
- };
- /* This structure holds information for an SH instruction. An array
- of these structures is sorted in order by opcode. */
- struct sh_opcode
- {
- /* The code for this instruction, after it has been anded with the
- mask value in the sh_major_opcode structure. */
- unsigned short opcode;
- /* Flags for this instruction. */
- unsigned long flags;
- };
- /* Flag which appear in the sh_opcode structure. */
- /* This instruction loads a value from memory. */
- #define LOAD (0x1)
- /* This instruction stores a value to memory. */
- #define STORE (0x2)
- /* This instruction is a branch. */
- #define BRANCH (0x4)
- /* This instruction has a delay slot. */
- #define DELAY (0x8)
- /* This instruction uses the value in the register in the field at
- mask 0x0f00 of the instruction. */
- #define USES1 (0x10)
- #define USES1_REG(x) ((x & 0x0f00) >> 8)
- /* This instruction uses the value in the register in the field at
- mask 0x00f0 of the instruction. */
- #define USES2 (0x20)
- #define USES2_REG(x) ((x & 0x00f0) >> 4)
- /* This instruction uses the value in register 0. */
- #define USESR0 (0x40)
- /* This instruction sets the value in the register in the field at
- mask 0x0f00 of the instruction. */
- #define SETS1 (0x80)
- #define SETS1_REG(x) ((x & 0x0f00) >> 8)
- /* This instruction sets the value in the register in the field at
- mask 0x00f0 of the instruction. */
- #define SETS2 (0x100)
- #define SETS2_REG(x) ((x & 0x00f0) >> 4)
- /* This instruction sets register 0. */
- #define SETSR0 (0x200)
- /* This instruction sets a special register. */
- #define SETSSP (0x400)
- /* This instruction uses a special register. */
- #define USESSP (0x800)
- /* This instruction uses the floating point register in the field at
- mask 0x0f00 of the instruction. */
- #define USESF1 (0x1000)
- #define USESF1_REG(x) ((x & 0x0f00) >> 8)
- /* This instruction uses the floating point register in the field at
- mask 0x00f0 of the instruction. */
- #define USESF2 (0x2000)
- #define USESF2_REG(x) ((x & 0x00f0) >> 4)
- /* This instruction uses floating point register 0. */
- #define USESF0 (0x4000)
- /* This instruction sets the floating point register in the field at
- mask 0x0f00 of the instruction. */
- #define SETSF1 (0x8000)
- #define SETSF1_REG(x) ((x & 0x0f00) >> 8)
- #define USESAS (0x10000)
- #define USESAS_REG(x) (((((x) >> 8) - 2) & 3) + 2)
- #define USESR8 (0x20000)
- #define SETSAS (0x40000)
- #define SETSAS_REG(x) USESAS_REG (x)
- #define MAP(a) a, sizeof a / sizeof a[0]
- #ifndef COFF_IMAGE_WITH_PE
- /* The opcode maps. */
- static const struct sh_opcode sh_opcode00[] =
- {
- { 0x0008, SETSSP }, /* clrt */
- { 0x0009, 0 }, /* nop */
- { 0x000b, BRANCH | DELAY | USESSP }, /* rts */
- { 0x0018, SETSSP }, /* sett */
- { 0x0019, SETSSP }, /* div0u */
- { 0x001b, 0 }, /* sleep */
- { 0x0028, SETSSP }, /* clrmac */
- { 0x002b, BRANCH | DELAY | SETSSP }, /* rte */
- { 0x0038, USESSP | SETSSP }, /* ldtlb */
- { 0x0048, SETSSP }, /* clrs */
- { 0x0058, SETSSP } /* sets */
- };
- static const struct sh_opcode sh_opcode01[] =
- {
- { 0x0003, BRANCH | DELAY | USES1 | SETSSP }, /* bsrf rn */
- { 0x000a, SETS1 | USESSP }, /* sts mach,rn */
- { 0x001a, SETS1 | USESSP }, /* sts macl,rn */
- { 0x0023, BRANCH | DELAY | USES1 }, /* braf rn */
- { 0x0029, SETS1 | USESSP }, /* movt rn */
- { 0x002a, SETS1 | USESSP }, /* sts pr,rn */
- { 0x005a, SETS1 | USESSP }, /* sts fpul,rn */
- { 0x006a, SETS1 | USESSP }, /* sts fpscr,rn / sts dsr,rn */
- { 0x0083, LOAD | USES1 }, /* pref @rn */
- { 0x007a, SETS1 | USESSP }, /* sts a0,rn */
- { 0x008a, SETS1 | USESSP }, /* sts x0,rn */
- { 0x009a, SETS1 | USESSP }, /* sts x1,rn */
- { 0x00aa, SETS1 | USESSP }, /* sts y0,rn */
- { 0x00ba, SETS1 | USESSP } /* sts y1,rn */
- };
- static const struct sh_opcode sh_opcode02[] =
- {
- { 0x0002, SETS1 | USESSP }, /* stc <special_reg>,rn */
- { 0x0004, STORE | USES1 | USES2 | USESR0 }, /* mov.b rm,@(r0,rn) */
- { 0x0005, STORE | USES1 | USES2 | USESR0 }, /* mov.w rm,@(r0,rn) */
- { 0x0006, STORE | USES1 | USES2 | USESR0 }, /* mov.l rm,@(r0,rn) */
- { 0x0007, SETSSP | USES1 | USES2 }, /* mul.l rm,rn */
- { 0x000c, LOAD | SETS1 | USES2 | USESR0 }, /* mov.b @(r0,rm),rn */
- { 0x000d, LOAD | SETS1 | USES2 | USESR0 }, /* mov.w @(r0,rm),rn */
- { 0x000e, LOAD | SETS1 | USES2 | USESR0 }, /* mov.l @(r0,rm),rn */
- { 0x000f, LOAD|SETS1|SETS2|SETSSP|USES1|USES2|USESSP }, /* mac.l @rm+,@rn+ */
- };
- static const struct sh_minor_opcode sh_opcode0[] =
- {
- { MAP (sh_opcode00), 0xffff },
- { MAP (sh_opcode01), 0xf0ff },
- { MAP (sh_opcode02), 0xf00f }
- };
- static const struct sh_opcode sh_opcode10[] =
- {
- { 0x1000, STORE | USES1 | USES2 } /* mov.l rm,@(disp,rn) */
- };
- static const struct sh_minor_opcode sh_opcode1[] =
- {
- { MAP (sh_opcode10), 0xf000 }
- };
- static const struct sh_opcode sh_opcode20[] =
- {
- { 0x2000, STORE | USES1 | USES2 }, /* mov.b rm,@rn */
- { 0x2001, STORE | USES1 | USES2 }, /* mov.w rm,@rn */
- { 0x2002, STORE | USES1 | USES2 }, /* mov.l rm,@rn */
- { 0x2004, STORE | SETS1 | USES1 | USES2 }, /* mov.b rm,@-rn */
- { 0x2005, STORE | SETS1 | USES1 | USES2 }, /* mov.w rm,@-rn */
- { 0x2006, STORE | SETS1 | USES1 | USES2 }, /* mov.l rm,@-rn */
- { 0x2007, SETSSP | USES1 | USES2 | USESSP }, /* div0s */
- { 0x2008, SETSSP | USES1 | USES2 }, /* tst rm,rn */
- { 0x2009, SETS1 | USES1 | USES2 }, /* and rm,rn */
- { 0x200a, SETS1 | USES1 | USES2 }, /* xor rm,rn */
- { 0x200b, SETS1 | USES1 | USES2 }, /* or rm,rn */
- { 0x200c, SETSSP | USES1 | USES2 }, /* cmp/str rm,rn */
- { 0x200d, SETS1 | USES1 | USES2 }, /* xtrct rm,rn */
- { 0x200e, SETSSP | USES1 | USES2 }, /* mulu.w rm,rn */
- { 0x200f, SETSSP | USES1 | USES2 } /* muls.w rm,rn */
- };
- static const struct sh_minor_opcode sh_opcode2[] =
- {
- { MAP (sh_opcode20), 0xf00f }
- };
- static const struct sh_opcode sh_opcode30[] =
- {
- { 0x3000, SETSSP | USES1 | USES2 }, /* cmp/eq rm,rn */
- { 0x3002, SETSSP | USES1 | USES2 }, /* cmp/hs rm,rn */
- { 0x3003, SETSSP | USES1 | USES2 }, /* cmp/ge rm,rn */
- { 0x3004, SETSSP | USESSP | USES1 | USES2 }, /* div1 rm,rn */
- { 0x3005, SETSSP | USES1 | USES2 }, /* dmulu.l rm,rn */
- { 0x3006, SETSSP | USES1 | USES2 }, /* cmp/hi rm,rn */
- { 0x3007, SETSSP | USES1 | USES2 }, /* cmp/gt rm,rn */
- { 0x3008, SETS1 | USES1 | USES2 }, /* sub rm,rn */
- { 0x300a, SETS1 | SETSSP | USES1 | USES2 | USESSP }, /* subc rm,rn */
- { 0x300b, SETS1 | SETSSP | USES1 | USES2 }, /* subv rm,rn */
- { 0x300c, SETS1 | USES1 | USES2 }, /* add rm,rn */
- { 0x300d, SETSSP | USES1 | USES2 }, /* dmuls.l rm,rn */
- { 0x300e, SETS1 | SETSSP | USES1 | USES2 | USESSP }, /* addc rm,rn */
- { 0x300f, SETS1 | SETSSP | USES1 | USES2 } /* addv rm,rn */
- };
- static const struct sh_minor_opcode sh_opcode3[] =
- {
- { MAP (sh_opcode30), 0xf00f }
- };
- static const struct sh_opcode sh_opcode40[] =
- {
- { 0x4000, SETS1 | SETSSP | USES1 }, /* shll rn */
- { 0x4001, SETS1 | SETSSP | USES1 }, /* shlr rn */
- { 0x4002, STORE | SETS1 | USES1 | USESSP }, /* sts.l mach,@-rn */
- { 0x4004, SETS1 | SETSSP | USES1 }, /* rotl rn */
- { 0x4005, SETS1 | SETSSP | USES1 }, /* rotr rn */
- { 0x4006, LOAD | SETS1 | SETSSP | USES1 }, /* lds.l @rm+,mach */
- { 0x4008, SETS1 | USES1 }, /* shll2 rn */
- { 0x4009, SETS1 | USES1 }, /* shlr2 rn */
- { 0x400a, SETSSP | USES1 }, /* lds rm,mach */
- { 0x400b, BRANCH | DELAY | USES1 }, /* jsr @rn */
- { 0x4010, SETS1 | SETSSP | USES1 }, /* dt rn */
- { 0x4011, SETSSP | USES1 }, /* cmp/pz rn */
- { 0x4012, STORE | SETS1 | USES1 | USESSP }, /* sts.l macl,@-rn */
- { 0x4014, SETSSP | USES1 }, /* setrc rm */
- { 0x4015, SETSSP | USES1 }, /* cmp/pl rn */
- { 0x4016, LOAD | SETS1 | SETSSP | USES1 }, /* lds.l @rm+,macl */
- { 0x4018, SETS1 | USES1 }, /* shll8 rn */
- { 0x4019, SETS1 | USES1 }, /* shlr8 rn */
- { 0x401a, SETSSP | USES1 }, /* lds rm,macl */
- { 0x401b, LOAD | SETSSP | USES1 }, /* tas.b @rn */
- { 0x4020, SETS1 | SETSSP | USES1 }, /* shal rn */
- { 0x4021, SETS1 | SETSSP | USES1 }, /* shar rn */
- { 0x4022, STORE | SETS1 | USES1 | USESSP }, /* sts.l pr,@-rn */
- { 0x4024, SETS1 | SETSSP | USES1 | USESSP }, /* rotcl rn */
- { 0x4025, SETS1 | SETSSP | USES1 | USESSP }, /* rotcr rn */
- { 0x4026, LOAD | SETS1 | SETSSP | USES1 }, /* lds.l @rm+,pr */
- { 0x4028, SETS1 | USES1 }, /* shll16 rn */
- { 0x4029, SETS1 | USES1 }, /* shlr16 rn */
- { 0x402a, SETSSP | USES1 }, /* lds rm,pr */
- { 0x402b, BRANCH | DELAY | USES1 }, /* jmp @rn */
- { 0x4052, STORE | SETS1 | USES1 | USESSP }, /* sts.l fpul,@-rn */
- { 0x4056, LOAD | SETS1 | SETSSP | USES1 }, /* lds.l @rm+,fpul */
- { 0x405a, SETSSP | USES1 }, /* lds.l rm,fpul */
- { 0x4062, STORE | SETS1 | USES1 | USESSP }, /* sts.l fpscr / dsr,@-rn */
- { 0x4066, LOAD | SETS1 | SETSSP | USES1 }, /* lds.l @rm+,fpscr / dsr */
- { 0x406a, SETSSP | USES1 }, /* lds rm,fpscr / lds rm,dsr */
- { 0x4072, STORE | SETS1 | USES1 | USESSP }, /* sts.l a0,@-rn */
- { 0x4076, LOAD | SETS1 | SETSSP | USES1 }, /* lds.l @rm+,a0 */
- { 0x407a, SETSSP | USES1 }, /* lds.l rm,a0 */
- { 0x4082, STORE | SETS1 | USES1 | USESSP }, /* sts.l x0,@-rn */
- { 0x4086, LOAD | SETS1 | SETSSP | USES1 }, /* lds.l @rm+,x0 */
- { 0x408a, SETSSP | USES1 }, /* lds.l rm,x0 */
- { 0x4092, STORE | SETS1 | USES1 | USESSP }, /* sts.l x1,@-rn */
- { 0x4096, LOAD | SETS1 | SETSSP | USES1 }, /* lds.l @rm+,x1 */
- { 0x409a, SETSSP | USES1 }, /* lds.l rm,x1 */
- { 0x40a2, STORE | SETS1 | USES1 | USESSP }, /* sts.l y0,@-rn */
- { 0x40a6, LOAD | SETS1 | SETSSP | USES1 }, /* lds.l @rm+,y0 */
- { 0x40aa, SETSSP | USES1 }, /* lds.l rm,y0 */
- { 0x40b2, STORE | SETS1 | USES1 | USESSP }, /* sts.l y1,@-rn */
- { 0x40b6, LOAD | SETS1 | SETSSP | USES1 }, /* lds.l @rm+,y1 */
- { 0x40ba, SETSSP | USES1 } /* lds.l rm,y1 */
- };
- static const struct sh_opcode sh_opcode41[] =
- {
- { 0x4003, STORE | SETS1 | USES1 | USESSP }, /* stc.l <special_reg>,@-rn */
- { 0x4007, LOAD | SETS1 | SETSSP | USES1 }, /* ldc.l @rm+,<special_reg> */
- { 0x400c, SETS1 | USES1 | USES2 }, /* shad rm,rn */
- { 0x400d, SETS1 | USES1 | USES2 }, /* shld rm,rn */
- { 0x400e, SETSSP | USES1 }, /* ldc rm,<special_reg> */
- { 0x400f, LOAD|SETS1|SETS2|SETSSP|USES1|USES2|USESSP }, /* mac.w @rm+,@rn+ */
- };
- static const struct sh_minor_opcode sh_opcode4[] =
- {
- { MAP (sh_opcode40), 0xf0ff },
- { MAP (sh_opcode41), 0xf00f }
- };
- static const struct sh_opcode sh_opcode50[] =
- {
- { 0x5000, LOAD | SETS1 | USES2 } /* mov.l @(disp,rm),rn */
- };
- static const struct sh_minor_opcode sh_opcode5[] =
- {
- { MAP (sh_opcode50), 0xf000 }
- };
- static const struct sh_opcode sh_opcode60[] =
- {
- { 0x6000, LOAD | SETS1 | USES2 }, /* mov.b @rm,rn */
- { 0x6001, LOAD | SETS1 | USES2 }, /* mov.w @rm,rn */
- { 0x6002, LOAD | SETS1 | USES2 }, /* mov.l @rm,rn */
- { 0x6003, SETS1 | USES2 }, /* mov rm,rn */
- { 0x6004, LOAD | SETS1 | SETS2 | USES2 }, /* mov.b @rm+,rn */
- { 0x6005, LOAD | SETS1 | SETS2 | USES2 }, /* mov.w @rm+,rn */
- { 0x6006, LOAD | SETS1 | SETS2 | USES2 }, /* mov.l @rm+,rn */
- { 0x6007, SETS1 | USES2 }, /* not rm,rn */
- { 0x6008, SETS1 | USES2 }, /* swap.b rm,rn */
- { 0x6009, SETS1 | USES2 }, /* swap.w rm,rn */
- { 0x600a, SETS1 | SETSSP | USES2 | USESSP }, /* negc rm,rn */
- { 0x600b, SETS1 | USES2 }, /* neg rm,rn */
- { 0x600c, SETS1 | USES2 }, /* extu.b rm,rn */
- { 0x600d, SETS1 | USES2 }, /* extu.w rm,rn */
- { 0x600e, SETS1 | USES2 }, /* exts.b rm,rn */
- { 0x600f, SETS1 | USES2 } /* exts.w rm,rn */
- };
- static const struct sh_minor_opcode sh_opcode6[] =
- {
- { MAP (sh_opcode60), 0xf00f }
- };
- static const struct sh_opcode sh_opcode70[] =
- {
- { 0x7000, SETS1 | USES1 } /* add #imm,rn */
- };
- static const struct sh_minor_opcode sh_opcode7[] =
- {
- { MAP (sh_opcode70), 0xf000 }
- };
- static const struct sh_opcode sh_opcode80[] =
- {
- { 0x8000, STORE | USES2 | USESR0 }, /* mov.b r0,@(disp,rn) */
- { 0x8100, STORE | USES2 | USESR0 }, /* mov.w r0,@(disp,rn) */
- { 0x8200, SETSSP }, /* setrc #imm */
- { 0x8400, LOAD | SETSR0 | USES2 }, /* mov.b @(disp,rm),r0 */
- { 0x8500, LOAD | SETSR0 | USES2 }, /* mov.w @(disp,rn),r0 */
- { 0x8800, SETSSP | USESR0 }, /* cmp/eq #imm,r0 */
- { 0x8900, BRANCH | USESSP }, /* bt label */
- { 0x8b00, BRANCH | USESSP }, /* bf label */
- { 0x8c00, SETSSP }, /* ldrs @(disp,pc) */
- { 0x8d00, BRANCH | DELAY | USESSP }, /* bt/s label */
- { 0x8e00, SETSSP }, /* ldre @(disp,pc) */
- { 0x8f00, BRANCH | DELAY | USESSP } /* bf/s label */
- };
- static const struct sh_minor_opcode sh_opcode8[] =
- {
- { MAP (sh_opcode80), 0xff00 }
- };
- static const struct sh_opcode sh_opcode90[] =
- {
- { 0x9000, LOAD | SETS1 } /* mov.w @(disp,pc),rn */
- };
- static const struct sh_minor_opcode sh_opcode9[] =
- {
- { MAP (sh_opcode90), 0xf000 }
- };
- static const struct sh_opcode sh_opcodea0[] =
- {
- { 0xa000, BRANCH | DELAY } /* bra label */
- };
- static const struct sh_minor_opcode sh_opcodea[] =
- {
- { MAP (sh_opcodea0), 0xf000 }
- };
- static const struct sh_opcode sh_opcodeb0[] =
- {
- { 0xb000, BRANCH | DELAY } /* bsr label */
- };
- static const struct sh_minor_opcode sh_opcodeb[] =
- {
- { MAP (sh_opcodeb0), 0xf000 }
- };
- static const struct sh_opcode sh_opcodec0[] =
- {
- { 0xc000, STORE | USESR0 | USESSP }, /* mov.b r0,@(disp,gbr) */
- { 0xc100, STORE | USESR0 | USESSP }, /* mov.w r0,@(disp,gbr) */
- { 0xc200, STORE | USESR0 | USESSP }, /* mov.l r0,@(disp,gbr) */
- { 0xc300, BRANCH | USESSP }, /* trapa #imm */
- { 0xc400, LOAD | SETSR0 | USESSP }, /* mov.b @(disp,gbr),r0 */
- { 0xc500, LOAD | SETSR0 | USESSP }, /* mov.w @(disp,gbr),r0 */
- { 0xc600, LOAD | SETSR0 | USESSP }, /* mov.l @(disp,gbr),r0 */
- { 0xc700, SETSR0 }, /* mova @(disp,pc),r0 */
- { 0xc800, SETSSP | USESR0 }, /* tst #imm,r0 */
- { 0xc900, SETSR0 | USESR0 }, /* and #imm,r0 */
- { 0xca00, SETSR0 | USESR0 }, /* xor #imm,r0 */
- { 0xcb00, SETSR0 | USESR0 }, /* or #imm,r0 */
- { 0xcc00, LOAD | SETSSP | USESR0 | USESSP }, /* tst.b #imm,@(r0,gbr) */
- { 0xcd00, LOAD | STORE | USESR0 | USESSP }, /* and.b #imm,@(r0,gbr) */
- { 0xce00, LOAD | STORE | USESR0 | USESSP }, /* xor.b #imm,@(r0,gbr) */
- { 0xcf00, LOAD | STORE | USESR0 | USESSP } /* or.b #imm,@(r0,gbr) */
- };
- static const struct sh_minor_opcode sh_opcodec[] =
- {
- { MAP (sh_opcodec0), 0xff00 }
- };
- static const struct sh_opcode sh_opcoded0[] =
- {
- { 0xd000, LOAD | SETS1 } /* mov.l @(disp,pc),rn */
- };
- static const struct sh_minor_opcode sh_opcoded[] =
- {
- { MAP (sh_opcoded0), 0xf000 }
- };
- static const struct sh_opcode sh_opcodee0[] =
- {
- { 0xe000, SETS1 } /* mov #imm,rn */
- };
- static const struct sh_minor_opcode sh_opcodee[] =
- {
- { MAP (sh_opcodee0), 0xf000 }
- };
- static const struct sh_opcode sh_opcodef0[] =
- {
- { 0xf000, SETSF1 | USESF1 | USESF2 }, /* fadd fm,fn */
- { 0xf001, SETSF1 | USESF1 | USESF2 }, /* fsub fm,fn */
- { 0xf002, SETSF1 | USESF1 | USESF2 }, /* fmul fm,fn */
- { 0xf003, SETSF1 | USESF1 | USESF2 }, /* fdiv fm,fn */
- { 0xf004, SETSSP | USESF1 | USESF2 }, /* fcmp/eq fm,fn */
- { 0xf005, SETSSP | USESF1 | USESF2 }, /* fcmp/gt fm,fn */
- { 0xf006, LOAD | SETSF1 | USES2 | USESR0 }, /* fmov.s @(r0,rm),fn */
- { 0xf007, STORE | USES1 | USESF2 | USESR0 }, /* fmov.s fm,@(r0,rn) */
- { 0xf008, LOAD | SETSF1 | USES2 }, /* fmov.s @rm,fn */
- { 0xf009, LOAD | SETS2 | SETSF1 | USES2 }, /* fmov.s @rm+,fn */
- { 0xf00a, STORE | USES1 | USESF2 }, /* fmov.s fm,@rn */
- { 0xf00b, STORE | SETS1 | USES1 | USESF2 }, /* fmov.s fm,@-rn */
- { 0xf00c, SETSF1 | USESF2 }, /* fmov fm,fn */
- { 0xf00e, SETSF1 | USESF1 | USESF2 | USESF0 } /* fmac f0,fm,fn */
- };
- static const struct sh_opcode sh_opcodef1[] =
- {
- { 0xf00d, SETSF1 | USESSP }, /* fsts fpul,fn */
- { 0xf01d, SETSSP | USESF1 }, /* flds fn,fpul */
- { 0xf02d, SETSF1 | USESSP }, /* float fpul,fn */
- { 0xf03d, SETSSP | USESF1 }, /* ftrc fn,fpul */
- { 0xf04d, SETSF1 | USESF1 }, /* fneg fn */
- { 0xf05d, SETSF1 | USESF1 }, /* fabs fn */
- { 0xf06d, SETSF1 | USESF1 }, /* fsqrt fn */
- { 0xf07d, SETSSP | USESF1 }, /* ftst/nan fn */
- { 0xf08d, SETSF1 }, /* fldi0 fn */
- { 0xf09d, SETSF1 } /* fldi1 fn */
- };
- static const struct sh_minor_opcode sh_opcodef[] =
- {
- { MAP (sh_opcodef0), 0xf00f },
- { MAP (sh_opcodef1), 0xf0ff }
- };
- static struct sh_major_opcode sh_opcodes[] =
- {
- { MAP (sh_opcode0) },
- { MAP (sh_opcode1) },
- { MAP (sh_opcode2) },
- { MAP (sh_opcode3) },
- { MAP (sh_opcode4) },
- { MAP (sh_opcode5) },
- { MAP (sh_opcode6) },
- { MAP (sh_opcode7) },
- { MAP (sh_opcode8) },
- { MAP (sh_opcode9) },
- { MAP (sh_opcodea) },
- { MAP (sh_opcodeb) },
- { MAP (sh_opcodec) },
- { MAP (sh_opcoded) },
- { MAP (sh_opcodee) },
- { MAP (sh_opcodef) }
- };
- /* The double data transfer / parallel processing insns are not
- described here. This will cause sh_align_load_span to leave them alone. */
- static const struct sh_opcode sh_dsp_opcodef0[] =
- {
- { 0xf400, USESAS | SETSAS | LOAD | SETSSP }, /* movs.x @-as,ds */
- { 0xf401, USESAS | SETSAS | STORE | USESSP }, /* movs.x ds,@-as */
- { 0xf404, USESAS | LOAD | SETSSP }, /* movs.x @as,ds */
- { 0xf405, USESAS | STORE | USESSP }, /* movs.x ds,@as */
- { 0xf408, USESAS | SETSAS | LOAD | SETSSP }, /* movs.x @as+,ds */
- { 0xf409, USESAS | SETSAS | STORE | USESSP }, /* movs.x ds,@as+ */
- { 0xf40c, USESAS | SETSAS | LOAD | SETSSP | USESR8 }, /* movs.x @as+r8,ds */
- { 0xf40d, USESAS | SETSAS | STORE | USESSP | USESR8 } /* movs.x ds,@as+r8 */
- };
- static const struct sh_minor_opcode sh_dsp_opcodef[] =
- {
- { MAP (sh_dsp_opcodef0), 0xfc0d }
- };
- /* Given an instruction, return a pointer to the corresponding
- sh_opcode structure. Return NULL if the instruction is not
- recognized. */
- static const struct sh_opcode *
- sh_insn_info (unsigned int insn)
- {
- const struct sh_major_opcode *maj;
- const struct sh_minor_opcode *min, *minend;
- maj = &sh_opcodes[(insn & 0xf000) >> 12];
- min = maj->minor_opcodes;
- minend = min + maj->count;
- for (; min < minend; min++)
- {
- unsigned int l;
- const struct sh_opcode *op, *opend;
- l = insn & min->mask;
- op = min->opcodes;
- opend = op + min->count;
- /* Since the opcodes tables are sorted, we could use a binary
- search here if the count were above some cutoff value. */
- for (; op < opend; op++)
- if (op->opcode == l)
- return op;
- }
- return NULL;
- }
- /* See whether an instruction uses a general purpose register. */
- static bool
- sh_insn_uses_reg (unsigned int insn,
- const struct sh_opcode *op,
- unsigned int reg)
- {
- unsigned int f;
- f = op->flags;
- if ((f & USES1) != 0
- && USES1_REG (insn) == reg)
- return true;
- if ((f & USES2) != 0
- && USES2_REG (insn) == reg)
- return true;
- if ((f & USESR0) != 0
- && reg == 0)
- return true;
- if ((f & USESAS) && reg == USESAS_REG (insn))
- return true;
- if ((f & USESR8) && reg == 8)
- return true;
- return false;
- }
- /* See whether an instruction sets a general purpose register. */
- static bool
- sh_insn_sets_reg (unsigned int insn,
- const struct sh_opcode *op,
- unsigned int reg)
- {
- unsigned int f;
- f = op->flags;
- if ((f & SETS1) != 0
- && SETS1_REG (insn) == reg)
- return true;
- if ((f & SETS2) != 0
- && SETS2_REG (insn) == reg)
- return true;
- if ((f & SETSR0) != 0
- && reg == 0)
- return true;
- if ((f & SETSAS) && reg == SETSAS_REG (insn))
- return true;
- return false;
- }
- /* See whether an instruction uses or sets a general purpose register */
- static bool
- sh_insn_uses_or_sets_reg (unsigned int insn,
- const struct sh_opcode *op,
- unsigned int reg)
- {
- if (sh_insn_uses_reg (insn, op, reg))
- return true;
- return sh_insn_sets_reg (insn, op, reg);
- }
- /* See whether an instruction uses a floating point register. */
- static bool
- sh_insn_uses_freg (unsigned int insn,
- const struct sh_opcode *op,
- unsigned int freg)
- {
- unsigned int f;
- f = op->flags;
- /* We can't tell if this is a double-precision insn, so just play safe
- and assume that it might be. So not only have we test FREG against
- itself, but also even FREG against FREG+1 - if the using insn uses
- just the low part of a double precision value - but also an odd
- FREG against FREG-1 - if the setting insn sets just the low part
- of a double precision value.
- So what this all boils down to is that we have to ignore the lowest
- bit of the register number. */
- if ((f & USESF1) != 0
- && (USESF1_REG (insn) & 0xe) == (freg & 0xe))
- return true;
- if ((f & USESF2) != 0
- && (USESF2_REG (insn) & 0xe) == (freg & 0xe))
- return true;
- if ((f & USESF0) != 0
- && freg == 0)
- return true;
- return false;
- }
- /* See whether an instruction sets a floating point register. */
- static bool
- sh_insn_sets_freg (unsigned int insn,
- const struct sh_opcode *op,
- unsigned int freg)
- {
- unsigned int f;
- f = op->flags;
- /* We can't tell if this is a double-precision insn, so just play safe
- and assume that it might be. So not only have we test FREG against
- itself, but also even FREG against FREG+1 - if the using insn uses
- just the low part of a double precision value - but also an odd
- FREG against FREG-1 - if the setting insn sets just the low part
- of a double precision value.
- So what this all boils down to is that we have to ignore the lowest
- bit of the register number. */
- if ((f & SETSF1) != 0
- && (SETSF1_REG (insn) & 0xe) == (freg & 0xe))
- return true;
- return false;
- }
- /* See whether an instruction uses or sets a floating point register */
- static bool
- sh_insn_uses_or_sets_freg (unsigned int insn,
- const struct sh_opcode *op,
- unsigned int reg)
- {
- if (sh_insn_uses_freg (insn, op, reg))
- return true;
- return sh_insn_sets_freg (insn, op, reg);
- }
- /* See whether instructions I1 and I2 conflict, assuming I1 comes
- before I2. OP1 and OP2 are the corresponding sh_opcode structures.
- This should return TRUE if there is a conflict, or FALSE if the
- instructions can be swapped safely. */
- static bool
- sh_insns_conflict (unsigned int i1,
- const struct sh_opcode *op1,
- unsigned int i2,
- const struct sh_opcode *op2)
- {
- unsigned int f1, f2;
- f1 = op1->flags;
- f2 = op2->flags;
- /* Load of fpscr conflicts with floating point operations.
- FIXME: shouldn't test raw opcodes here. */
- if (((i1 & 0xf0ff) == 0x4066 && (i2 & 0xf000) == 0xf000)
- || ((i2 & 0xf0ff) == 0x4066 && (i1 & 0xf000) == 0xf000))
- return true;
- if ((f1 & (BRANCH | DELAY)) != 0
- || (f2 & (BRANCH | DELAY)) != 0)
- return true;
- if (((f1 | f2) & SETSSP)
- && (f1 & (SETSSP | USESSP))
- && (f2 & (SETSSP | USESSP)))
- return true;
- if ((f1 & SETS1) != 0
- && sh_insn_uses_or_sets_reg (i2, op2, SETS1_REG (i1)))
- return true;
- if ((f1 & SETS2) != 0
- && sh_insn_uses_or_sets_reg (i2, op2, SETS2_REG (i1)))
- return true;
- if ((f1 & SETSR0) != 0
- && sh_insn_uses_or_sets_reg (i2, op2, 0))
- return true;
- if ((f1 & SETSAS)
- && sh_insn_uses_or_sets_reg (i2, op2, SETSAS_REG (i1)))
- return true;
- if ((f1 & SETSF1) != 0
- && sh_insn_uses_or_sets_freg (i2, op2, SETSF1_REG (i1)))
- return true;
- if ((f2 & SETS1) != 0
- && sh_insn_uses_or_sets_reg (i1, op1, SETS1_REG (i2)))
- return true;
- if ((f2 & SETS2) != 0
- && sh_insn_uses_or_sets_reg (i1, op1, SETS2_REG (i2)))
- return true;
- if ((f2 & SETSR0) != 0
- && sh_insn_uses_or_sets_reg (i1, op1, 0))
- return true;
- if ((f2 & SETSAS)
- && sh_insn_uses_or_sets_reg (i1, op1, SETSAS_REG (i2)))
- return true;
- if ((f2 & SETSF1) != 0
- && sh_insn_uses_or_sets_freg (i1, op1, SETSF1_REG (i2)))
- return true;
- /* The instructions do not conflict. */
- return false;
- }
- /* I1 is a load instruction, and I2 is some other instruction. Return
- TRUE if I1 loads a register which I2 uses. */
- static bool
- sh_load_use (unsigned int i1,
- const struct sh_opcode *op1,
- unsigned int i2,
- const struct sh_opcode *op2)
- {
- unsigned int f1;
- f1 = op1->flags;
- if ((f1 & LOAD) == 0)
- return false;
- /* If both SETS1 and SETSSP are set, that means a load to a special
- register using postincrement addressing mode, which we don't care
- about here. */
- if ((f1 & SETS1) != 0
- && (f1 & SETSSP) == 0
- && sh_insn_uses_reg (i2, op2, (i1 & 0x0f00) >> 8))
- return true;
- if ((f1 & SETSR0) != 0
- && sh_insn_uses_reg (i2, op2, 0))
- return true;
- if ((f1 & SETSF1) != 0
- && sh_insn_uses_freg (i2, op2, (i1 & 0x0f00) >> 8))
- return true;
- return false;
- }
- /* Try to align loads and stores within a span of memory. This is
- called by both the ELF and the COFF sh targets. ABFD and SEC are
- the BFD and section we are examining. CONTENTS is the contents of
- the section. SWAP is the routine to call to swap two instructions.
- RELOCS is a pointer to the internal relocation information, to be
- passed to SWAP. PLABEL is a pointer to the current label in a
- sorted list of labels; LABEL_END is the end of the list. START and
- STOP are the range of memory to examine. If a swap is made,
- *PSWAPPED is set to TRUE. */
- #ifdef COFF_WITH_PE
- static
- #endif
- bool
- _bfd_sh_align_load_span (bfd *abfd,
- asection *sec,
- bfd_byte *contents,
- bool (*swap) (bfd *, asection *, void *, bfd_byte *, bfd_vma),
- void * relocs,
- bfd_vma **plabel,
- bfd_vma *label_end,
- bfd_vma start,
- bfd_vma stop,
- bool *pswapped)
- {
- int dsp = (abfd->arch_info->mach == bfd_mach_sh_dsp
- || abfd->arch_info->mach == bfd_mach_sh3_dsp);
- bfd_vma i;
- /* The SH4 has a Harvard architecture, hence aligning loads is not
- desirable. In fact, it is counter-productive, since it interferes
- with the schedules generated by the compiler. */
- if (abfd->arch_info->mach == bfd_mach_sh4)
- return true;
- /* If we are linking sh[3]-dsp code, swap the FPU instructions for DSP
- instructions. */
- if (dsp)
- {
- sh_opcodes[0xf].minor_opcodes = sh_dsp_opcodef;
- sh_opcodes[0xf].count = sizeof sh_dsp_opcodef / sizeof sh_dsp_opcodef [0];
- }
- /* Instructions should be aligned on 2 byte boundaries. */
- if ((start & 1) == 1)
- ++start;
- /* Now look through the unaligned addresses. */
- i = start;
- if ((i & 2) == 0)
- i += 2;
- for (; i < stop; i += 4)
- {
- unsigned int insn;
- const struct sh_opcode *op;
- unsigned int prev_insn = 0;
- const struct sh_opcode *prev_op = NULL;
- insn = bfd_get_16 (abfd, contents + i);
- op = sh_insn_info (insn);
- if (op == NULL
- || (op->flags & (LOAD | STORE)) == 0)
- continue;
- /* This is a load or store which is not on a four byte boundary. */
- while (*plabel < label_end && **plabel < i)
- ++*plabel;
- if (i > start)
- {
- prev_insn = bfd_get_16 (abfd, contents + i - 2);
- /* If INSN is the field b of a parallel processing insn, it is not
- a load / store after all. Note that the test here might mistake
- the field_b of a pcopy insn for the starting code of a parallel
- processing insn; this might miss a swapping opportunity, but at
- least we're on the safe side. */
- if (dsp && (prev_insn & 0xfc00) == 0xf800)
- continue;
- /* Check if prev_insn is actually the field b of a parallel
- processing insn. Again, this can give a spurious match
- after a pcopy. */
- if (dsp && i - 2 > start)
- {
- unsigned pprev_insn = bfd_get_16 (abfd, contents + i - 4);
- if ((pprev_insn & 0xfc00) == 0xf800)
- prev_op = NULL;
- else
- prev_op = sh_insn_info (prev_insn);
- }
- else
- prev_op = sh_insn_info (prev_insn);
- /* If the load/store instruction is in a delay slot, we
- can't swap. */
- if (prev_op == NULL
- || (prev_op->flags & DELAY) != 0)
- continue;
- }
- if (i > start
- && (*plabel >= label_end || **plabel != i)
- && prev_op != NULL
- && (prev_op->flags & (LOAD | STORE)) == 0
- && ! sh_insns_conflict (prev_insn, prev_op, insn, op))
- {
- bool ok;
- /* The load/store instruction does not have a label, and
- there is a previous instruction; PREV_INSN is not
- itself a load/store instruction, and PREV_INSN and
- INSN do not conflict. */
- ok = true;
- if (i >= start + 4)
- {
- unsigned int prev2_insn;
- const struct sh_opcode *prev2_op;
- prev2_insn = bfd_get_16 (abfd, contents + i - 4);
- prev2_op = sh_insn_info (prev2_insn);
- /* If the instruction before PREV_INSN has a delay
- slot--that is, PREV_INSN is in a delay slot--we
- can not swap. */
- if (prev2_op == NULL
- || (prev2_op->flags & DELAY) != 0)
- ok = false;
- /* If the instruction before PREV_INSN is a load,
- and it sets a register which INSN uses, then
- putting INSN immediately after PREV_INSN will
- cause a pipeline bubble, so there is no point to
- making the swap. */
- if (ok
- && (prev2_op->flags & LOAD) != 0
- && sh_load_use (prev2_insn, prev2_op, insn, op))
- ok = false;
- }
- if (ok)
- {
- if (! (*swap) (abfd, sec, relocs, contents, i - 2))
- return false;
- *pswapped = true;
- continue;
- }
- }
- while (*plabel < label_end && **plabel < i + 2)
- ++*plabel;
- if (i + 2 < stop
- && (*plabel >= label_end || **plabel != i + 2))
- {
- unsigned int next_insn;
- const struct sh_opcode *next_op;
- /* There is an instruction after the load/store
- instruction, and it does not have a label. */
- next_insn = bfd_get_16 (abfd, contents + i + 2);
- next_op = sh_insn_info (next_insn);
- if (next_op != NULL
- && (next_op->flags & (LOAD | STORE)) == 0
- && ! sh_insns_conflict (insn, op, next_insn, next_op))
- {
- bool ok;
- /* NEXT_INSN is not itself a load/store instruction,
- and it does not conflict with INSN. */
- ok = true;
- /* If PREV_INSN is a load, and it sets a register
- which NEXT_INSN uses, then putting NEXT_INSN
- immediately after PREV_INSN will cause a pipeline
- bubble, so there is no reason to make this swap. */
- if (prev_op != NULL
- && (prev_op->flags & LOAD) != 0
- && sh_load_use (prev_insn, prev_op, next_insn, next_op))
- ok = false;
- /* If INSN is a load, and it sets a register which
- the insn after NEXT_INSN uses, then doing the
- swap will cause a pipeline bubble, so there is no
- reason to make the swap. However, if the insn
- after NEXT_INSN is itself a load or store
- instruction, then it is misaligned, so
- optimistically hope that it will be swapped
- itself, and just live with the pipeline bubble if
- it isn't. */
- if (ok
- && i + 4 < stop
- && (op->flags & LOAD) != 0)
- {
- unsigned int next2_insn;
- const struct sh_opcode *next2_op;
- next2_insn = bfd_get_16 (abfd, contents + i + 4);
- next2_op = sh_insn_info (next2_insn);
- if (next2_op == NULL
- || ((next2_op->flags & (LOAD | STORE)) == 0
- && sh_load_use (insn, op, next2_insn, next2_op)))
- ok = false;
- }
- if (ok)
- {
- if (! (*swap) (abfd, sec, relocs, contents, i))
- return false;
- *pswapped = true;
- continue;
- }
- }
- }
- }
- return true;
- }
- #endif /* not COFF_IMAGE_WITH_PE */
- /* Swap two SH instructions. */
- static bool
- sh_swap_insns (bfd * abfd,
- asection * sec,
- void * relocs,
- bfd_byte * contents,
- bfd_vma addr)
- {
- struct internal_reloc *internal_relocs = (struct internal_reloc *) relocs;
- unsigned short i1, i2;
- struct internal_reloc *irel, *irelend;
- /* Swap the instructions themselves. */
- i1 = bfd_get_16 (abfd, contents + addr);
- i2 = bfd_get_16 (abfd, contents + addr + 2);
- bfd_put_16 (abfd, (bfd_vma) i2, contents + addr);
- bfd_put_16 (abfd, (bfd_vma) i1, contents + addr + 2);
- /* Adjust all reloc addresses. */
- irelend = internal_relocs + sec->reloc_count;
- for (irel = internal_relocs; irel < irelend; irel++)
- {
- int type, add;
- /* There are a few special types of relocs that we don't want to
- adjust. These relocs do not apply to the instruction itself,
- but are only associated with the address. */
- type = irel->r_type;
- if (type == R_SH_ALIGN
- || type == R_SH_CODE
- || type == R_SH_DATA
- || type == R_SH_LABEL)
- continue;
- /* If an R_SH_USES reloc points to one of the addresses being
- swapped, we must adjust it. It would be incorrect to do this
- for a jump, though, since we want to execute both
- instructions after the jump. (We have avoided swapping
- around a label, so the jump will not wind up executing an
- instruction it shouldn't). */
- if (type == R_SH_USES)
- {
- bfd_vma off;
- off = irel->r_vaddr - sec->vma + 4 + irel->r_offset;
- if (off == addr)
- irel->r_offset += 2;
- else if (off == addr + 2)
- irel->r_offset -= 2;
- }
- if (irel->r_vaddr - sec->vma == addr)
- {
- irel->r_vaddr += 2;
- add = -2;
- }
- else if (irel->r_vaddr - sec->vma == addr + 2)
- {
- irel->r_vaddr -= 2;
- add = 2;
- }
- else
- add = 0;
- if (add != 0)
- {
- bfd_byte *loc;
- unsigned short insn, oinsn;
- bool overflow;
- loc = contents + irel->r_vaddr - sec->vma;
- overflow = false;
- switch (type)
- {
- default:
- break;
- case R_SH_PCDISP8BY2:
- case R_SH_PCRELIMM8BY2:
- insn = bfd_get_16 (abfd, loc);
- oinsn = insn;
- insn += add / 2;
- if ((oinsn & 0xff00) != (insn & 0xff00))
- overflow = true;
- bfd_put_16 (abfd, (bfd_vma) insn, loc);
- break;
- case R_SH_PCDISP:
- insn = bfd_get_16 (abfd, loc);
- oinsn = insn;
- insn += add / 2;
- if ((oinsn & 0xf000) != (insn & 0xf000))
- overflow = true;
- bfd_put_16 (abfd, (bfd_vma) insn, loc);
- break;
- case R_SH_PCRELIMM8BY4:
- /* This reloc ignores the least significant 3 bits of
- the program counter before adding in the offset.
- This means that if ADDR is at an even address, the
- swap will not affect the offset. If ADDR is an at an
- odd address, then the instruction will be crossing a
- four byte boundary, and must be adjusted. */
- if ((addr & 3) != 0)
- {
- insn = bfd_get_16 (abfd, loc);
- oinsn = insn;
- insn += add / 2;
- if ((oinsn & 0xff00) != (insn & 0xff00))
- overflow = true;
- bfd_put_16 (abfd, (bfd_vma) insn, loc);
- }
- break;
- }
- if (overflow)
- {
- _bfd_error_handler
- /* xgettext: c-format */
- (_("%pB: %#" PRIx64 ": fatal: reloc overflow while relaxing"),
- abfd, (uint64_t) irel->r_vaddr);
- bfd_set_error (bfd_error_bad_value);
- return false;
- }
- }
- }
- return true;
- }
- /* Look for loads and stores which we can align to four byte
- boundaries. See the longer comment above sh_relax_section for why
- this is desirable. This sets *PSWAPPED if some instruction was
- swapped. */
- static bool
- sh_align_loads (bfd *abfd,
- asection *sec,
- struct internal_reloc *internal_relocs,
- bfd_byte *contents,
- bool *pswapped)
- {
- struct internal_reloc *irel, *irelend;
- bfd_vma *labels = NULL;
- bfd_vma *label, *label_end;
- bfd_size_type amt;
- *pswapped = false;
- irelend = internal_relocs + sec->reloc_count;
- /* Get all the addresses with labels on them. */
- amt = (bfd_size_type) sec->reloc_count * sizeof (bfd_vma);
- labels = (bfd_vma *) bfd_malloc (amt);
- if (labels == NULL)
- goto error_return;
- label_end = labels;
- for (irel = internal_relocs; irel < irelend; irel++)
- {
- if (irel->r_type == R_SH_LABEL)
- {
- *label_end = irel->r_vaddr - sec->vma;
- ++label_end;
- }
- }
- /* Note that the assembler currently always outputs relocs in
- address order. If that ever changes, this code will need to sort
- the label values and the relocs. */
- label = labels;
- for (irel = internal_relocs; irel < irelend; irel++)
- {
- bfd_vma start, stop;
- if (irel->r_type != R_SH_CODE)
- continue;
- start = irel->r_vaddr - sec->vma;
- for (irel++; irel < irelend; irel++)
- if (irel->r_type == R_SH_DATA)
- break;
- if (irel < irelend)
- stop = irel->r_vaddr - sec->vma;
- else
- stop = sec->size;
- if (! _bfd_sh_align_load_span (abfd, sec, contents, sh_swap_insns,
- internal_relocs, &label,
- label_end, start, stop, pswapped))
- goto error_return;
- }
- free (labels);
- return true;
- error_return:
- free (labels);
- return false;
- }
- /* This is a modification of _bfd_coff_generic_relocate_section, which
- will handle SH relaxing. */
- static bool
- sh_relocate_section (bfd *output_bfd ATTRIBUTE_UNUSED,
- struct bfd_link_info *info,
- bfd *input_bfd,
- asection *input_section,
- bfd_byte *contents,
- struct internal_reloc *relocs,
- struct internal_syment *syms,
- asection **sections)
- {
- struct internal_reloc *rel;
- struct internal_reloc *relend;
- rel = relocs;
- relend = rel + input_section->reloc_count;
- for (; rel < relend; rel++)
- {
- long symndx;
- struct coff_link_hash_entry *h;
- struct internal_syment *sym;
- bfd_vma addend;
- bfd_vma val;
- reloc_howto_type *howto;
- bfd_reloc_status_type rstat;
- /* Almost all relocs have to do with relaxing. If any work must
- be done for them, it has been done in sh_relax_section. */
- if (rel->r_type != R_SH_IMM32
- #ifdef COFF_WITH_PE
- && rel->r_type != R_SH_IMM32CE
- && rel->r_type != R_SH_IMAGEBASE
- #endif
- && rel->r_type != R_SH_PCDISP)
- continue;
- symndx = rel->r_symndx;
- if (symndx == -1)
- {
- h = NULL;
- sym = NULL;
- }
- else
- {
- if (symndx < 0
- || (unsigned long) symndx >= obj_raw_syment_count (input_bfd))
- {
- _bfd_error_handler
- /* xgettext: c-format */
- (_("%pB: illegal symbol index %ld in relocs"),
- input_bfd, symndx);
- bfd_set_error (bfd_error_bad_value);
- return false;
- }
- h = obj_coff_sym_hashes (input_bfd)[symndx];
- sym = syms + symndx;
- }
- if (sym != NULL && sym->n_scnum != 0)
- addend = - sym->n_value;
- else
- addend = 0;
- if (rel->r_type == R_SH_PCDISP)
- addend -= 4;
- if (rel->r_type >= SH_COFF_HOWTO_COUNT)
- howto = NULL;
- else
- howto = &sh_coff_howtos[rel->r_type];
- if (howto == NULL)
- {
- bfd_set_error (bfd_error_bad_value);
- return false;
- }
- #ifdef COFF_WITH_PE
- if (rel->r_type == R_SH_IMAGEBASE)
- addend -= pe_data (input_section->output_section->owner)->pe_opthdr.ImageBase;
- #endif
- val = 0;
- if (h == NULL)
- {
- asection *sec;
- /* There is nothing to do for an internal PCDISP reloc. */
- if (rel->r_type == R_SH_PCDISP)
- continue;
- if (symndx == -1)
- {
- sec = bfd_abs_section_ptr;
- val = 0;
- }
- else
- {
- sec = sections[symndx];
- val = (sec->output_section->vma
- + sec->output_offset
- + sym->n_value
- - sec->vma);
- }
- }
- else
- {
- if (h->root.type == bfd_link_hash_defined
- || h->root.type == bfd_link_hash_defweak)
- {
- asection *sec;
- sec = h->root.u.def.section;
- val = (h->root.u.def.value
- + sec->output_section->vma
- + sec->output_offset);
- }
- else if (! bfd_link_relocatable (info))
- (*info->callbacks->undefined_symbol)
- (info, h->root.root.string, input_bfd, input_section,
- rel->r_vaddr - input_section->vma, true);
- }
- rstat = _bfd_final_link_relocate (howto, input_bfd, input_section,
- contents,
- rel->r_vaddr - input_section->vma,
- val, addend);
- switch (rstat)
- {
- default:
- abort ();
- case bfd_reloc_ok:
- break;
- case bfd_reloc_overflow:
- {
- const char *name;
- char buf[SYMNMLEN + 1];
- if (symndx == -1)
- name = "*ABS*";
- else if (h != NULL)
- name = NULL;
- else if (sym->_n._n_n._n_zeroes == 0
- && sym->_n._n_n._n_offset != 0)
- name = obj_coff_strings (input_bfd) + sym->_n._n_n._n_offset;
- else
- {
- strncpy (buf, sym->_n._n_name, SYMNMLEN);
- buf[SYMNMLEN] = '\0';
- name = buf;
- }
- (*info->callbacks->reloc_overflow)
- (info, (h ? &h->root : NULL), name, howto->name,
- (bfd_vma) 0, input_bfd, input_section,
- rel->r_vaddr - input_section->vma);
- }
- }
- }
- return true;
- }
- /* This is a version of bfd_generic_get_relocated_section_contents
- which uses sh_relocate_section. */
- static bfd_byte *
- sh_coff_get_relocated_section_contents (bfd *output_bfd,
- struct bfd_link_info *link_info,
- struct bfd_link_order *link_order,
- bfd_byte *data,
- bool relocatable,
- asymbol **symbols)
- {
- asection *input_section = link_order->u.indirect.section;
- bfd *input_bfd = input_section->owner;
- asection **sections = NULL;
- struct internal_reloc *internal_relocs = NULL;
- struct internal_syment *internal_syms = NULL;
- /* We only need to handle the case of relaxing, or of having a
- particular set of section contents, specially. */
- if (relocatable
- || coff_section_data (input_bfd, input_section) == NULL
- || coff_section_data (input_bfd, input_section)->contents == NULL)
- return bfd_generic_get_relocated_section_contents (output_bfd, link_info,
- link_order, data,
- relocatable,
- symbols);
- memcpy (data, coff_section_data (input_bfd, input_section)->contents,
- (size_t) input_section->size);
- if ((input_section->flags & SEC_RELOC) != 0
- && input_section->reloc_count > 0)
- {
- bfd_size_type symesz = bfd_coff_symesz (input_bfd);
- bfd_byte *esym, *esymend;
- struct internal_syment *isymp;
- asection **secpp;
- bfd_size_type amt;
- if (! _bfd_coff_get_external_symbols (input_bfd))
- goto error_return;
- internal_relocs = (_bfd_coff_read_internal_relocs
- (input_bfd, input_section, false, (bfd_byte *) NULL,
- false, (struct internal_reloc *) NULL));
- if (internal_relocs == NULL)
- goto error_return;
- amt = obj_raw_syment_count (input_bfd);
- amt *= sizeof (struct internal_syment);
- internal_syms = (struct internal_syment *) bfd_malloc (amt);
- if (internal_syms == NULL)
- goto error_return;
- amt = obj_raw_syment_count (input_bfd);
- amt *= sizeof (asection *);
- sections = (asection **) bfd_malloc (amt);
- if (sections == NULL)
- goto error_return;
- isymp = internal_syms;
- secpp = sections;
- esym = (bfd_byte *) obj_coff_external_syms (input_bfd);
- esymend = esym + obj_raw_syment_count (input_bfd) * symesz;
- while (esym < esymend)
- {
- bfd_coff_swap_sym_in (input_bfd, esym, isymp);
- if (isymp->n_scnum != 0)
- *secpp = coff_section_from_bfd_index (input_bfd, isymp->n_scnum);
- else
- {
- if (isymp->n_value == 0)
- *secpp = bfd_und_section_ptr;
- else
- *secpp = bfd_com_section_ptr;
- }
- esym += (isymp->n_numaux + 1) * symesz;
- secpp += isymp->n_numaux + 1;
- isymp += isymp->n_numaux + 1;
- }
- if (! sh_relocate_section (output_bfd, link_info, input_bfd,
- input_section, data, internal_relocs,
- internal_syms, sections))
- goto error_return;
- free (sections);
- sections = NULL;
- free (internal_syms);
- internal_syms = NULL;
- free (internal_relocs);
- internal_relocs = NULL;
- }
- return data;
- error_return:
- free (internal_relocs);
- free (internal_syms);
- free (sections);
- return NULL;
- }
- /* The target vectors. */
- #ifndef TARGET_SHL_SYM
- CREATE_BIG_COFF_TARGET_VEC (sh_coff_vec, "coff-sh", BFD_IS_RELAXABLE, 0, '_', NULL, COFF_SWAP_TABLE)
- #endif
- #ifdef TARGET_SHL_SYM
- #define TARGET_SYM TARGET_SHL_SYM
- #else
- #define TARGET_SYM sh_coff_le_vec
- #endif
- #ifndef TARGET_SHL_NAME
- #define TARGET_SHL_NAME "coff-shl"
- #endif
- #ifdef COFF_WITH_PE
- CREATE_LITTLE_COFF_TARGET_VEC (TARGET_SYM, TARGET_SHL_NAME, BFD_IS_RELAXABLE,
- SEC_CODE | SEC_DATA, '_', NULL, COFF_SWAP_TABLE);
- #else
- CREATE_LITTLE_COFF_TARGET_VEC (TARGET_SYM, TARGET_SHL_NAME, BFD_IS_RELAXABLE,
- 0, '_', NULL, COFF_SWAP_TABLE)
- #endif
- #ifndef TARGET_SHL_SYM
- /* Some people want versions of the SH COFF target which do not align
- to 16 byte boundaries. We implement that by adding a couple of new
- target vectors. These are just like the ones above, but they
- change the default section alignment. To generate them in the
- assembler, use -small. To use them in the linker, use -b
- coff-sh{l}-small and -oformat coff-sh{l}-small.
- Yes, this is a horrible hack. A general solution for setting
- section alignment in COFF is rather complex. ELF handles this
- correctly. */
- /* Only recognize the small versions if the target was not defaulted.
- Otherwise we won't recognize the non default endianness. */
- static bfd_cleanup
- coff_small_object_p (bfd *abfd)
- {
- if (abfd->target_defaulted)
- {
- bfd_set_error (bfd_error_wrong_format);
- return NULL;
- }
- return coff_object_p (abfd);
- }
- /* Set the section alignment for the small versions. */
- static bool
- coff_small_new_section_hook (bfd *abfd, asection *section)
- {
- if (! coff_new_section_hook (abfd, section))
- return false;
- /* We must align to at least a four byte boundary, because longword
- accesses must be on a four byte boundary. */
- if (section->alignment_power == COFF_DEFAULT_SECTION_ALIGNMENT_POWER)
- section->alignment_power = 2;
- return true;
- }
- /* This is copied from bfd_coff_std_swap_table so that we can change
- the default section alignment power. */
- static bfd_coff_backend_data bfd_coff_small_swap_table =
- {
- coff_swap_aux_in, coff_swap_sym_in, coff_swap_lineno_in,
- coff_swap_aux_out, coff_swap_sym_out,
- coff_swap_lineno_out, coff_swap_reloc_out,
- coff_swap_filehdr_out, coff_swap_aouthdr_out,
- coff_swap_scnhdr_out,
- FILHSZ, AOUTSZ, SCNHSZ, SYMESZ, AUXESZ, RELSZ, LINESZ, FILNMLEN,
- #ifdef COFF_LONG_FILENAMES
- true,
- #else
- false,
- #endif
- COFF_DEFAULT_LONG_SECTION_NAMES,
- 2,
- #ifdef COFF_FORCE_SYMBOLS_IN_STRINGS
- true,
- #else
- false,
- #endif
- #ifdef COFF_DEBUG_STRING_WIDE_PREFIX
- 4,
- #else
- 2,
- #endif
- 32768,
- coff_swap_filehdr_in, coff_swap_aouthdr_in, coff_swap_scnhdr_in,
- coff_swap_reloc_in, coff_bad_format_hook, coff_set_arch_mach_hook,
- coff_mkobject_hook, styp_to_sec_flags, coff_set_alignment_hook,
- coff_slurp_symbol_table, symname_in_debug_hook, coff_pointerize_aux_hook,
- coff_print_aux, coff_reloc16_extra_cases, coff_reloc16_estimate,
- coff_classify_symbol, coff_compute_section_file_positions,
- coff_start_final_link, coff_relocate_section, coff_rtype_to_howto,
- coff_adjust_symndx, coff_link_add_one_symbol,
- coff_link_output_has_begun, coff_final_link_postscript,
- bfd_pe_print_pdata
- };
- #define coff_small_close_and_cleanup \
- coff_close_and_cleanup
- #define coff_small_bfd_free_cached_info \
- coff_bfd_free_cached_info
- #define coff_small_get_section_contents \
- coff_get_section_contents
- #define coff_small_get_section_contents_in_window \
- coff_get_section_contents_in_window
- extern const bfd_target sh_coff_small_le_vec;
- const bfd_target sh_coff_small_vec =
- {
- "coff-sh-small", /* name */
- bfd_target_coff_flavour,
- BFD_ENDIAN_BIG, /* data byte order is big */
- BFD_ENDIAN_BIG, /* header byte order is big */
- (HAS_RELOC | EXEC_P /* object flags */
- | HAS_LINENO | HAS_DEBUG
- | HAS_SYMS | HAS_LOCALS | WP_TEXT | BFD_IS_RELAXABLE),
- (SEC_HAS_CONTENTS | SEC_ALLOC | SEC_LOAD | SEC_RELOC),
- '_', /* leading symbol underscore */
- '/', /* ar_pad_char */
- 15, /* ar_max_namelen */
- 0, /* match priority. */
- TARGET_KEEP_UNUSED_SECTION_SYMBOLS, /* keep unused section symbols. */
- bfd_getb64, bfd_getb_signed_64, bfd_putb64,
- bfd_getb32, bfd_getb_signed_32, bfd_putb32,
- bfd_getb16, bfd_getb_signed_16, bfd_putb16, /* data */
- bfd_getb64, bfd_getb_signed_64, bfd_putb64,
- bfd_getb32, bfd_getb_signed_32, bfd_putb32,
- bfd_getb16, bfd_getb_signed_16, bfd_putb16, /* hdrs */
- { /* bfd_check_format */
- _bfd_dummy_target,
- coff_small_object_p,
- bfd_generic_archive_p,
- _bfd_dummy_target
- },
- { /* bfd_set_format */
- _bfd_bool_bfd_false_error,
- coff_mkobject,
- _bfd_generic_mkarchive,
- _bfd_bool_bfd_false_error
- },
- { /* bfd_write_contents */
- _bfd_bool_bfd_false_error,
- coff_write_object_contents,
- _bfd_write_archive_contents,
- _bfd_bool_bfd_false_error
- },
- BFD_JUMP_TABLE_GENERIC (coff_small),
- BFD_JUMP_TABLE_COPY (coff),
- BFD_JUMP_TABLE_CORE (_bfd_nocore),
- BFD_JUMP_TABLE_ARCHIVE (_bfd_archive_coff),
- BFD_JUMP_TABLE_SYMBOLS (coff),
- BFD_JUMP_TABLE_RELOCS (coff),
- BFD_JUMP_TABLE_WRITE (coff),
- BFD_JUMP_TABLE_LINK (coff),
- BFD_JUMP_TABLE_DYNAMIC (_bfd_nodynamic),
- &sh_coff_small_le_vec,
- &bfd_coff_small_swap_table
- };
- const bfd_target sh_coff_small_le_vec =
- {
- "coff-shl-small", /* name */
- bfd_target_coff_flavour,
- BFD_ENDIAN_LITTLE, /* data byte order is little */
- BFD_ENDIAN_LITTLE, /* header byte order is little endian too*/
- (HAS_RELOC | EXEC_P /* object flags */
- | HAS_LINENO | HAS_DEBUG
- | HAS_SYMS | HAS_LOCALS | WP_TEXT | BFD_IS_RELAXABLE),
- (SEC_HAS_CONTENTS | SEC_ALLOC | SEC_LOAD | SEC_RELOC),
- '_', /* leading symbol underscore */
- '/', /* ar_pad_char */
- 15, /* ar_max_namelen */
- 0, /* match priority. */
- TARGET_KEEP_UNUSED_SECTION_SYMBOLS, /* keep unused section symbols. */
- bfd_getl64, bfd_getl_signed_64, bfd_putl64,
- bfd_getl32, bfd_getl_signed_32, bfd_putl32,
- bfd_getl16, bfd_getl_signed_16, bfd_putl16, /* data */
- bfd_getl64, bfd_getl_signed_64, bfd_putl64,
- bfd_getl32, bfd_getl_signed_32, bfd_putl32,
- bfd_getl16, bfd_getl_signed_16, bfd_putl16, /* hdrs */
- { /* bfd_check_format */
- _bfd_dummy_target,
- coff_small_object_p,
- bfd_generic_archive_p,
- _bfd_dummy_target
- },
- { /* bfd_set_format */
- _bfd_bool_bfd_false_error,
- coff_mkobject,
- _bfd_generic_mkarchive,
- _bfd_bool_bfd_false_error
- },
- { /* bfd_write_contents */
- _bfd_bool_bfd_false_error,
- coff_write_object_contents,
- _bfd_write_archive_contents,
- _bfd_bool_bfd_false_error
- },
- BFD_JUMP_TABLE_GENERIC (coff_small),
- BFD_JUMP_TABLE_COPY (coff),
- BFD_JUMP_TABLE_CORE (_bfd_nocore),
- BFD_JUMP_TABLE_ARCHIVE (_bfd_archive_coff),
- BFD_JUMP_TABLE_SYMBOLS (coff),
- BFD_JUMP_TABLE_RELOCS (coff),
- BFD_JUMP_TABLE_WRITE (coff),
- BFD_JUMP_TABLE_LINK (coff),
- BFD_JUMP_TABLE_DYNAMIC (_bfd_nodynamic),
- &sh_coff_small_vec,
- &bfd_coff_small_swap_table
- };
- #endif
|