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authorRichard Henderson <rth@redhat.com>1999-05-03 07:29:11 +0000
committerRichard Henderson <rth@redhat.com>1999-05-03 07:29:11 +0000
commit252b5132c753830d5fd56823373aed85f2a0db63 (patch)
tree1af963bfd8d3e55167b81def4207f175eaff3a56 /bfd/coff-sh.c
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19990502 sourceware importbinu_ss_19990502
Diffstat (limited to 'bfd/coff-sh.c')
-rw-r--r--bfd/coff-sh.c2959
1 files changed, 2959 insertions, 0 deletions
diff --git a/bfd/coff-sh.c b/bfd/coff-sh.c
new file mode 100644
index 0000000..e3d6eec
--- /dev/null
+++ b/bfd/coff-sh.c
@@ -0,0 +1,2959 @@
+/* BFD back-end for Hitachi Super-H COFF binaries.
+ Copyright 1993, 94, 95, 96, 97, 1998 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 2 of the License, or
+(at your option) any later version.
+
+This program is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+GNU General Public License for more details.
+
+You should have received a copy of the GNU General Public License
+along with this program; if not, write to the Free Software
+Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */
+
+#include "bfd.h"
+#include "sysdep.h"
+#include "libbfd.h"
+#include "bfdlink.h"
+#include "coff/sh.h"
+#include "coff/internal.h"
+#include "libcoff.h"
+
+/* Internal functions. */
+static bfd_reloc_status_type sh_reloc
+ PARAMS ((bfd *, arelent *, asymbol *, PTR, asection *, bfd *, char **));
+static long get_symbol_value PARAMS ((asymbol *));
+static boolean sh_merge_private_data PARAMS ((bfd *, bfd *));
+static boolean sh_relax_section
+ PARAMS ((bfd *, asection *, struct bfd_link_info *, boolean *));
+static boolean sh_relax_delete_bytes
+ PARAMS ((bfd *, asection *, bfd_vma, int));
+static const struct sh_opcode *sh_insn_info PARAMS ((unsigned int));
+static boolean sh_align_loads
+ PARAMS ((bfd *, asection *, struct internal_reloc *, bfd_byte *, boolean *));
+static boolean sh_swap_insns
+ PARAMS ((bfd *, asection *, PTR, bfd_byte *, bfd_vma));
+static boolean sh_relocate_section
+ PARAMS ((bfd *, struct bfd_link_info *, bfd *, asection *, bfd_byte *,
+ struct internal_reloc *, struct internal_syment *, asection **));
+static bfd_byte *sh_coff_get_relocated_section_contents
+ PARAMS ((bfd *, struct bfd_link_info *, struct bfd_link_order *,
+ bfd_byte *, boolean, asymbol **));
+
+/* Default section alignment to 2**4. */
+#define COFF_DEFAULT_SECTION_ALIGNMENT_POWER (4)
+
+/* Generate long file names. */
+#define COFF_LONG_FILENAMES
+
+/* 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[] =
+{
+ { 0 },
+ { 1 },
+ { 2 },
+ { 3 }, /* R_SH_PCREL8 */
+ { 4 }, /* R_SH_PCREL16 */
+ { 5 }, /* R_SH_HIGH8 */
+ { 6 }, /* R_SH_IMM24 */
+ { 7 }, /* R_SH_LOW16 */
+ { 8 },
+ { 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 */
+
+ { 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 */
+
+ { 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 */
+
+ { 15 },
+ { 16 }, /* R_SH_IMM8 */
+ { 17 }, /* R_SH_IMM8BY2 */
+ { 18 }, /* R_SH_IMM8BY4 */
+ { 19 }, /* R_SH_IMM4 */
+ { 20 }, /* R_SH_IMM4BY2 */
+ { 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__
+
+/* Swap the r_offset field in and out. */
+#define SWAP_IN_RELOC_OFFSET bfd_h_get_32
+#define SWAP_OUT_RELOC_OFFSET bfd_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)
+
+/* Get the value of a symbol, when performing a relocation. */
+
+static long
+get_symbol_value (symbol)
+ 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;
+}
+
+/* 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 (abfd, 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 (abfd, reloc_entry, symbol_in, data, input_section, output_bfd,
+ error_message)
+ bfd *abfd;
+ arelent *reloc_entry;
+ asymbol *symbol_in;
+ PTR data;
+ asection *input_section;
+ bfd *output_bfd;
+ char **error_message;
+{
+ unsigned long 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
+ && (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;
+
+ sym_value = get_symbol_value (symbol_in);
+
+ switch (r_type)
+ {
+ case R_SH_IMM32:
+ insn = bfd_get_32 (abfd, hit_data);
+ insn += sym_value + reloc_entry->addend;
+ bfd_put_32 (abfd, insn, hit_data);
+ break;
+ 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) << 1;
+ if (insn & 0x800)
+ sym_value -= 0x1000;
+ insn = (insn & 0xf000) | (sym_value & 0xfff);
+ bfd_put_16 (abfd, insn, hit_data);
+ if (sym_value < (bfd_vma) -0x1000 || sym_value >= 0x1000)
+ return bfd_reloc_overflow;
+ break;
+ default:
+ abort ();
+ break;
+ }
+
+ return bfd_reloc_ok;
+}
+
+/* This routine checks for linking big and little endian objects
+ together. */
+
+static boolean
+sh_merge_private_data (ibfd, obfd)
+ bfd *ibfd;
+ bfd *obfd;
+{
+ if (ibfd->xvec->byteorder != obfd->xvec->byteorder
+ && obfd->xvec->byteorder != BFD_ENDIAN_UNKNOWN)
+ {
+ (*_bfd_error_handler)
+ ("%s: compiled for a %s endian system and target is %s endian",
+ bfd_get_filename (ibfd),
+ bfd_big_endian (ibfd) ? "big" : "little",
+ bfd_big_endian (obfd) ? "big" : "little");
+
+ bfd_set_error (bfd_error_wrong_format);
+ return false;
+ }
+
+ return true;
+}
+
+#define coff_bfd_merge_private_bfd_data sh_merge_private_data
+
+/* 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"
+
+/* 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 boolean
+sh_relax_section (abfd, sec, link_info, again)
+ bfd *abfd;
+ asection *sec;
+ struct bfd_link_info *link_info;
+ boolean *again;
+{
+ struct internal_reloc *internal_relocs;
+ struct internal_reloc *free_relocs = NULL;
+ boolean have_code;
+ struct internal_reloc *irel, *irelend;
+ bfd_byte *contents = NULL;
+ bfd_byte *free_contents = NULL;
+
+ *again = false;
+
+ if (link_info->relocateable
+ || (sec->flags & SEC_RELOC) == 0
+ || sec->reloc_count == 0)
+ return true;
+
+ /* If this is the first time we have been called for this section,
+ initialize the cooked size. */
+ if (sec->_cooked_size == 0)
+ sec->_cooked_size = sec->_raw_size;
+
+ 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;
+ if (! link_info->keep_memory)
+ free_relocs = internal_relocs;
+
+ 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) != NULL
+ && coff_section_data (abfd, sec)->contents != NULL)
+ contents = coff_section_data (abfd, sec)->contents;
+ else
+ {
+ contents = (bfd_byte *) bfd_malloc (sec->_raw_size);
+ if (contents == NULL)
+ goto error_return;
+ free_contents = contents;
+
+ if (! bfd_get_section_contents (abfd, sec, contents,
+ (file_ptr) 0, sec->_raw_size))
+ 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->_raw_size)
+ {
+ (*_bfd_error_handler) ("%s: 0x%lx: warning: bad R_SH_USES offset",
+ bfd_get_filename (abfd),
+ (unsigned long) 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)
+ ("%s: 0x%lx: warning: R_SH_USES points to unrecognized insn 0x%x",
+ bfd_get_filename (abfd), (unsigned long) 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) &~ 3;
+ if (paddr >= sec->_raw_size)
+ {
+ ((*_bfd_error_handler)
+ ("%s: 0x%lx: warning: bad R_SH_USES load offset",
+ bfd_get_filename (abfd), (unsigned long) 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
+ && irelfn->r_type == R_SH_IMM32)
+ break;
+ if (irelfn >= irelend)
+ {
+ ((*_bfd_error_handler)
+ ("%s: 0x%lx: warning: could not find expected reloc",
+ bfd_get_filename (abfd), (unsigned long) 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)
+ ("%s: 0x%lx: warning: symbol in unexpected section",
+ bfd_get_filename (abfd), (unsigned long) 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. */
+
+ if (coff_section_data (abfd, sec) == NULL)
+ {
+ sec->used_by_bfd =
+ ((PTR) bfd_zalloc (abfd, sizeof (struct coff_section_tdata)));
+ if (sec->used_by_bfd == NULL)
+ goto error_return;
+ }
+
+ coff_section_data (abfd, sec)->relocs = internal_relocs;
+ coff_section_data (abfd, sec)->keep_relocs = true;
+ free_relocs = NULL;
+
+ coff_section_data (abfd, sec)->contents = contents;
+ coff_section_data (abfd, sec)->keep_contents = true;
+ free_contents = NULL;
+
+ 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,
+ 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, 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)
+ ("%s: 0x%lx: warning: could not find expected COUNT reloc",
+ bfd_get_filename (abfd), (unsigned long) paddr));
+ continue;
+ }
+
+ /* The number of uses is stored in the r_offset field. We've
+ just deleted one. */
+ if (irelcount->r_offset == 0)
+ {
+ ((*_bfd_error_handler) ("%s: 0x%lx: warning: bad count",
+ bfd_get_filename (abfd),
+ (unsigned long) 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)
+ {
+ boolean swapped;
+
+ /* Get the section contents. */
+ if (contents == NULL)
+ {
+ if (coff_section_data (abfd, sec) != NULL
+ && coff_section_data (abfd, sec)->contents != NULL)
+ contents = coff_section_data (abfd, sec)->contents;
+ else
+ {
+ contents = (bfd_byte *) bfd_malloc (sec->_raw_size);
+ if (contents == NULL)
+ goto error_return;
+ free_contents = contents;
+
+ if (! bfd_get_section_contents (abfd, sec, contents,
+ (file_ptr) 0, sec->_raw_size))
+ goto error_return;
+ }
+ }
+
+ if (! sh_align_loads (abfd, sec, internal_relocs, contents, &swapped))
+ goto error_return;
+
+ if (swapped)
+ {
+ if (coff_section_data (abfd, sec) == NULL)
+ {
+ sec->used_by_bfd =
+ ((PTR) bfd_zalloc (abfd, sizeof (struct coff_section_tdata)));
+ if (sec->used_by_bfd == NULL)
+ goto error_return;
+ }
+
+ coff_section_data (abfd, sec)->relocs = internal_relocs;
+ coff_section_data (abfd, sec)->keep_relocs = true;
+ free_relocs = NULL;
+
+ coff_section_data (abfd, sec)->contents = contents;
+ coff_section_data (abfd, sec)->keep_contents = true;
+ free_contents = NULL;
+
+ obj_coff_keep_syms (abfd) = true;
+ }
+ }
+
+ if (free_relocs != NULL)
+ {
+ free (free_relocs);
+ free_relocs = NULL;
+ }
+
+ if (free_contents != NULL)
+ {
+ if (! link_info->keep_memory)
+ free (free_contents);
+ else
+ {
+ /* Cache the section contents for coff_link_input_bfd. */
+ if (coff_section_data (abfd, sec) == NULL)
+ {
+ sec->used_by_bfd =
+ ((PTR) bfd_zalloc (abfd, sizeof (struct coff_section_tdata)));
+ if (sec->used_by_bfd == NULL)
+ goto error_return;
+ coff_section_data (abfd, sec)->relocs = NULL;
+ }
+ coff_section_data (abfd, sec)->contents = contents;
+ }
+ }
+
+ return true;
+
+ error_return:
+ if (free_relocs != NULL)
+ free (free_relocs);
+ if (free_contents != NULL)
+ free (free_contents);
+ return false;
+}
+
+/* Delete some bytes from a section while relaxing. */
+
+static boolean
+sh_relax_delete_bytes (abfd, sec, addr, count)
+ 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 aligment
+ power larger than the number of bytes we are deleting. */
+
+ irelalign = NULL;
+ toaddr = sec->_cooked_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, toaddr - addr - count);
+ if (irelalign == NULL)
+ sec->_cooked_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, 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;
+ boolean 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:
+ /* 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, insn, contents + nraddr);
+ break;
+
+ case R_SH_PCDISP:
+ insn += adjust / 2;
+ if ((oinsn & 0xf000) != (insn & 0xf000))
+ overflow = true;
+ bfd_put_16 (abfd, 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, insn, contents + nraddr);
+ break;
+
+ case R_SH_SWITCH8:
+ voff += adjust;
+ if (voff < 0 || voff >= 0xff)
+ overflow = true;
+ bfd_put_8 (abfd, voff, contents + nraddr);
+ break;
+
+ case R_SH_SWITCH16:
+ voff += adjust;
+ if (voff < - 0x8000 || voff >= 0x8000)
+ overflow = true;
+ bfd_put_signed_16 (abfd, voff, contents + nraddr);
+ break;
+
+ case R_SH_SWITCH32:
+ voff += adjust;
+ bfd_put_signed_32 (abfd, voff, contents + nraddr);
+ break;
+
+ case R_SH_USES:
+ irel->r_offset += adjust;
+ break;
+ }
+
+ if (overflow)
+ {
+ ((*_bfd_error_handler)
+ ("%s: 0x%lx: fatal: reloc overflow while relaxing",
+ bfd_get_filename (abfd), (unsigned long) 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;
+
+ if (irelscan->r_type != R_SH_IMM32)
+ 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
+ {
+ /* 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. */
+ ocontents = (bfd_byte *) bfd_malloc (o->_raw_size);
+ if (ocontents == NULL)
+ return false;
+ if (! bfd_get_section_contents (abfd, o, ocontents,
+ (file_ptr) 0,
+ o->_raw_size))
+ return false;
+ 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)
+ ("%s: fatal: generic symbols retrieved before relaxing",
+ bfd_get_filename (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, (PTR) esym, (PTR) &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, (PTR) &isym, (PTR) 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,
+ 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 short 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)
+
+/* This instruction uses the value in the register in the field at
+ mask 0x00f0 of the instruction. */
+#define USES2 (0x20)
+
+/* 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)
+
+/* This instruction sets the value in the register in the field at
+ mask 0x00f0 of the instruction. */
+#define SETS2 (0x100)
+
+/* 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)
+
+/* This instruction uses the floating point register in the field at
+ mask 0x00f0 of the instruction. */
+#define USESF2 (0x2000)
+
+/* 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)
+
+static boolean sh_insn_uses_reg
+ PARAMS ((unsigned int, const struct sh_opcode *, unsigned int));
+static boolean sh_insn_uses_freg
+ PARAMS ((unsigned int, const struct sh_opcode *, unsigned int));
+static boolean sh_insns_conflict
+ PARAMS ((unsigned int, const struct sh_opcode *, unsigned int,
+ const struct sh_opcode *));
+static boolean sh_load_use
+ PARAMS ((unsigned int, const struct sh_opcode *, unsigned int,
+ const struct sh_opcode *));
+
+/* The opcode maps. */
+
+#define MAP(a) a, sizeof a / sizeof a[0]
+
+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[] =
+{
+ { 0x0002, SETS1 | USESSP }, /* stc sr,rn */
+ { 0x0003, BRANCH | DELAY | USES1 | SETSSP }, /* bsrf rn */
+ { 0x000a, SETS1 | USESSP }, /* sts mach,rn */
+ { 0x0012, SETS1 | USESSP }, /* stc gbr,rn */
+ { 0x001a, SETS1 | USESSP }, /* sts macl,rn */
+ { 0x0022, SETS1 | USESSP }, /* stc vbr,rn */
+ { 0x0023, BRANCH | DELAY | USES1 }, /* braf rn */
+ { 0x0029, SETS1 | USESSP }, /* movt rn */
+ { 0x002a, SETS1 | USESSP }, /* sts pr,rn */
+ { 0x0032, SETS1 | USESSP }, /* stc ssr,rn */
+ { 0x0042, SETS1 | USESSP }, /* stc spc,rn */
+ { 0x005a, SETS1 | USESSP }, /* sts fpul,rn */
+ { 0x006a, SETS1 | USESSP }, /* sts fpscr,rn */
+ { 0x0082, SETS1 | USESSP }, /* stc r0_bank,rn */
+ { 0x0083, LOAD | USES1 }, /* pref @rn */
+ { 0x0092, SETS1 | USESSP }, /* stc r1_bank,rn */
+ { 0x00a2, SETS1 | USESSP }, /* stc r2_bank,rn */
+ { 0x00b2, SETS1 | USESSP }, /* stc r3_bank,rn */
+ { 0x00c2, SETS1 | USESSP }, /* stc r4_bank,rn */
+ { 0x00d2, SETS1 | USESSP }, /* stc r5_bank,rn */
+ { 0x00e2, SETS1 | USESSP }, /* stc r6_bank,rn */
+ { 0x00f2, SETS1 | USESSP } /* stc r7_bank,rn */
+};
+
+static const struct sh_opcode sh_opcode02[] =
+{
+ { 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 */
+ { 0x4003, STORE | SETS1 | USES1 | USESSP }, /* stc.l sr,@-rn */
+ { 0x4004, SETS1 | SETSSP | USES1 }, /* rotl rn */
+ { 0x4005, SETS1 | SETSSP | USES1 }, /* rotr rn */
+ { 0x4006, LOAD | SETS1 | SETSSP | USES1 }, /* lds.l @rm+,mach */
+ { 0x4007, LOAD | SETS1 | SETSSP | USES1 }, /* ldc.l @rm+,sr */
+ { 0x4008, SETS1 | USES1 }, /* shll2 rn */
+ { 0x4009, SETS1 | USES1 }, /* shlr2 rn */
+ { 0x400a, SETSSP | USES1 }, /* lds rm,mach */
+ { 0x400b, BRANCH | DELAY | USES1 }, /* jsr @rn */
+ { 0x400e, SETSSP | USES1 }, /* ldc rm,sr */
+ { 0x4010, SETS1 | SETSSP | USES1 }, /* dt rn */
+ { 0x4011, SETSSP | USES1 }, /* cmp/pz rn */
+ { 0x4012, STORE | SETS1 | USES1 | USESSP }, /* sts.l macl,@-rn */
+ { 0x4013, STORE | SETS1 | USES1 | USESSP }, /* stc.l gbr,@-rn */
+ { 0x4015, SETSSP | USES1 }, /* cmp/pl rn */
+ { 0x4016, LOAD | SETS1 | SETSSP | USES1 }, /* lds.l @rm+,macl */
+ { 0x4017, LOAD | SETS1 | SETSSP | USES1 }, /* ldc.l @rm+,gbr */
+ { 0x4018, SETS1 | USES1 }, /* shll8 rn */
+ { 0x4019, SETS1 | USES1 }, /* shlr8 rn */
+ { 0x401a, SETSSP | USES1 }, /* lds rm,macl */
+ { 0x401b, LOAD | SETSSP | USES1 }, /* tas.b @rn */
+ { 0x401e, SETSSP | USES1 }, /* ldc rm,gbr */
+ { 0x4020, SETS1 | SETSSP | USES1 }, /* shal rn */
+ { 0x4021, SETS1 | SETSSP | USES1 }, /* shar rn */
+ { 0x4022, STORE | SETS1 | USES1 | USESSP }, /* sts.l pr,@-rn */
+ { 0x4023, STORE | SETS1 | USES1 | USESSP }, /* stc.l vbr,@-rn */
+ { 0x4024, SETS1 | SETSSP | USES1 | USESSP }, /* rotcl rn */
+ { 0x4025, SETS1 | SETSSP | USES1 | USESSP }, /* rotcr rn */
+ { 0x4026, LOAD | SETS1 | SETSSP | USES1 }, /* lds.l @rm+,pr */
+ { 0x4027, LOAD | SETS1 | SETSSP | USES1 }, /* ldc.l @rm+,vbr */
+ { 0x4028, SETS1 | USES1 }, /* shll16 rn */
+ { 0x4029, SETS1 | USES1 }, /* shlr16 rn */
+ { 0x402a, SETSSP | USES1 }, /* lds rm,pr */
+ { 0x402b, BRANCH | DELAY | USES1 }, /* jmp @rn */
+ { 0x402e, SETSSP | USES1 }, /* ldc rm,vbr */
+ { 0x4033, STORE | SETS1 | USES1 | USESSP }, /* stc.l ssr,@-rn */
+ { 0x4037, LOAD | SETS1 | SETSSP | USES1 }, /* ldc.l @rm+,ssr */
+ { 0x403e, SETSSP | USES1 }, /* ldc rm,ssr */
+ { 0x4043, STORE | SETS1 | USES1 | USESSP }, /* stc.l spc,@-rn */
+ { 0x4047, LOAD | SETS1 | SETSSP | USES1 }, /* ldc.l @rm+,spc */
+ { 0x404e, SETSSP | USES1 }, /* ldc rm,spc */
+ { 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,@-rn */
+ { 0x4066, LOAD | SETS1 | SETSSP | USES1 }, /* lds.l @rm+,fpscr */
+ { 0x406a, SETSSP | USES1 } /* lds rm,fpscr */
+};
+
+static const struct sh_opcode sh_opcode41[] =
+{
+ { 0x4083, STORE | SETS1 | USES1 | USESSP }, /* stc.l rx_bank,@-rn */
+ { 0x4087, LOAD | SETS1 | SETSSP | USES1 }, /* ldc.l @rm+,rx_bank */
+ { 0x408e, SETSSP | USES1 } /* ldc rm,rx_bank */
+};
+
+static const struct sh_opcode sh_opcode42[] =
+{
+ { 0x400c, SETS1 | USES1 | USES2 }, /* shad rm,rn */
+ { 0x400d, SETS1 | USES1 | USES2 }, /* shld rm,rn */
+ { 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), 0xf08f },
+ { MAP (sh_opcode42), 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) */
+ { 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 */
+ { 0x8d00, BRANCH | DELAY | USESSP }, /* bt/s label */
+ { 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 const 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) }
+};
+
+/* 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 (insn)
+ 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 boolean
+sh_insn_uses_reg (insn, op, reg)
+ unsigned int insn;
+ const struct sh_opcode *op;
+ unsigned int reg;
+{
+ unsigned int f;
+
+ f = op->flags;
+
+ if ((f & USES1) != 0
+ && ((insn & 0x0f00) >> 8) == reg)
+ return true;
+ if ((f & USES2) != 0
+ && ((insn & 0x00f0) >> 4) == reg)
+ return true;
+ if ((f & USESR0) != 0
+ && reg == 0)
+ return true;
+
+ return false;
+}
+
+/* See whether an instruction uses a floating point register. */
+
+static boolean
+sh_insn_uses_freg (insn, op, 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
+ && ((insn & 0x0e00) >> 8) == (freg & 0xe))
+ return true;
+ if ((f & USESF2) != 0
+ && ((insn & 0x00e0) >> 4) == (freg & 0xe))
+ return true;
+ if ((f & USESF0) != 0
+ && freg == 0)
+ return true;
+
+ return false;
+}
+
+/* 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 boolean
+sh_insns_conflict (i1, op1, i2, op2)
+ 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 & SETSSP) != 0 && (f2 & USESSP) != 0)
+ return true;
+ if ((f2 & SETSSP) != 0 && (f1 & USESSP) != 0)
+ return true;
+
+ if ((f1 & SETS1) != 0
+ && sh_insn_uses_reg (i2, op2, (i1 & 0x0f00) >> 8))
+ return true;
+ if ((f1 & SETS2) != 0
+ && sh_insn_uses_reg (i2, op2, (i1 & 0x00f0) >> 4))
+ 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;
+
+ if ((f2 & SETS1) != 0
+ && sh_insn_uses_reg (i1, op1, (i2 & 0x0f00) >> 8))
+ return true;
+ if ((f2 & SETS2) != 0
+ && sh_insn_uses_reg (i1, op1, (i2 & 0x00f0) >> 4))
+ return true;
+ if ((f2 & SETSR0) != 0
+ && sh_insn_uses_reg (i1, op1, 0))
+ return true;
+ if ((f2 & SETSF1) != 0
+ && sh_insn_uses_freg (i1, op1, (i2 & 0x0f00) >> 8))
+ 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 boolean
+sh_load_use (i1, op1, i2, op2)
+ 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. */
+
+boolean
+_bfd_sh_align_load_span (abfd, sec, contents, swap, relocs,
+ plabel, label_end, start, stop, pswapped)
+ bfd *abfd;
+ asection *sec;
+ bfd_byte *contents;
+ boolean (*swap) PARAMS ((bfd *, asection *, PTR, bfd_byte *, bfd_vma));
+ PTR relocs;
+ bfd_vma **plabel;
+ bfd_vma *label_end;
+ bfd_vma start;
+ bfd_vma stop;
+ boolean *pswapped;
+{
+ bfd_vma i;
+
+ /* 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);
+ 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))
+ {
+ boolean 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))
+ {
+ boolean 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->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;
+}
+
+/* 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 boolean
+sh_align_loads (abfd, sec, internal_relocs, contents, pswapped)
+ bfd *abfd;
+ asection *sec;
+ struct internal_reloc *internal_relocs;
+ bfd_byte *contents;
+ boolean *pswapped;
+{
+ struct internal_reloc *irel, *irelend;
+ bfd_vma *labels = NULL;
+ bfd_vma *label, *label_end;
+
+ *pswapped = false;
+
+ irelend = internal_relocs + sec->reloc_count;
+
+ /* Get all the addresses with labels on them. */
+ labels = (bfd_vma *) bfd_malloc (sec->reloc_count * sizeof (bfd_vma));
+ 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->_cooked_size;
+
+ if (! _bfd_sh_align_load_span (abfd, sec, contents, sh_swap_insns,
+ (PTR) internal_relocs, &label,
+ label_end, start, stop, pswapped))
+ goto error_return;
+ }
+
+ free (labels);
+
+ return true;
+
+ error_return:
+ if (labels != NULL)
+ free (labels);
+ return false;
+}
+
+/* Swap two SH instructions. */
+
+static boolean
+sh_swap_insns (abfd, sec, relocs, contents, addr)
+ bfd *abfd;
+ asection *sec;
+ PTR 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, i2, contents + addr);
+ bfd_put_16 (abfd, 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;
+ boolean 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, 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, 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, insn, loc);
+ }
+
+ break;
+ }
+
+ if (overflow)
+ {
+ ((*_bfd_error_handler)
+ ("%s: 0x%lx: fatal: reloc overflow while relaxing",
+ bfd_get_filename (abfd), (unsigned long) irel->r_vaddr));
+ bfd_set_error (bfd_error_bad_value);
+ return false;
+ }
+ }
+ }
+
+ return true;
+}
+
+/* This is a modification of _bfd_coff_generic_relocate_section, which
+ will handle SH relaxing. */
+
+static boolean
+sh_relocate_section (output_bfd, info, input_bfd, input_section, contents,
+ relocs, syms, sections)
+ bfd *output_bfd;
+ 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
+ && 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)
+ ("%s: illegal symbol index %ld in relocs",
+ bfd_get_filename (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;
+ }
+
+ 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 (! info->relocateable)
+ {
+ if (! ((*info->callbacks->undefined_symbol)
+ (info, h->root.root.string, input_bfd, input_section,
+ rel->r_vaddr - input_section->vma)))
+ return false;
+ }
+ }
+
+ 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 = h->root.root.string;
+ 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;
+ }
+
+ if (! ((*info->callbacks->reloc_overflow)
+ (info, name, howto->name, (bfd_vma) 0, input_bfd,
+ input_section, rel->r_vaddr - input_section->vma)))
+ return false;
+ }
+ }
+ }
+
+ 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 (output_bfd, link_info, link_order,
+ data, relocateable, symbols)
+ bfd *output_bfd;
+ struct bfd_link_info *link_info;
+ struct bfd_link_order *link_order;
+ bfd_byte *data;
+ boolean relocateable;
+ 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 (relocateable
+ || 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,
+ relocateable,
+ symbols);
+
+ memcpy (data, coff_section_data (input_bfd, input_section)->contents,
+ input_section->_raw_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;
+
+ 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;
+
+ internal_syms = ((struct internal_syment *)
+ bfd_malloc (obj_raw_syment_count (input_bfd)
+ * sizeof (struct internal_syment)));
+ if (internal_syms == NULL)
+ goto error_return;
+
+ sections = (asection **) bfd_malloc (obj_raw_syment_count (input_bfd)
+ * sizeof (asection *));
+ 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, (PTR) esym, (PTR) 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:
+ if (internal_relocs != NULL)
+ free (internal_relocs);
+ if (internal_syms != NULL)
+ free (internal_syms);
+ if (sections != NULL)
+ free (sections);
+ return NULL;
+}
+
+/* The target vectors. */
+
+const bfd_target shcoff_vec =
+{
+ "coff-sh", /* 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 */
+ 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_dummy_target, coff_object_p, /* bfd_check_format */
+ bfd_generic_archive_p, _bfd_dummy_target},
+ {bfd_false, coff_mkobject, _bfd_generic_mkarchive, /* bfd_set_format */
+ bfd_false},
+ {bfd_false, coff_write_object_contents, /* bfd_write_contents */
+ _bfd_write_archive_contents, bfd_false},
+
+ BFD_JUMP_TABLE_GENERIC (coff),
+ 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),
+
+ COFF_SWAP_TABLE,
+};
+
+const bfd_target shlcoff_vec =
+{
+ "coff-shl", /* 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 */
+ 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_dummy_target, coff_object_p, /* bfd_check_format */
+ bfd_generic_archive_p, _bfd_dummy_target},
+ {bfd_false, coff_mkobject, _bfd_generic_mkarchive, /* bfd_set_format */
+ bfd_false},
+ {bfd_false, coff_write_object_contents, /* bfd_write_contents */
+ _bfd_write_archive_contents, bfd_false},
+
+ BFD_JUMP_TABLE_GENERIC (coff),
+ 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),
+
+ COFF_SWAP_TABLE,
+};
+
+/* 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 const bfd_target *
+coff_small_object_p (abfd)
+ 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 boolean
+coff_small_new_section_hook (abfd, section)
+ 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 const 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,
+#ifdef COFF_LONG_FILENAMES
+ true,
+#else
+ false,
+#endif
+#ifdef COFF_LONG_SECTION_NAMES
+ true,
+#else
+ false,
+#endif
+ 2,
+ 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_sym_is_global, 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
+};
+
+#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
+
+const bfd_target shcoff_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 */
+ 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_dummy_target, coff_small_object_p, /* bfd_check_format */
+ bfd_generic_archive_p, _bfd_dummy_target},
+ {bfd_false, coff_mkobject, _bfd_generic_mkarchive, /* bfd_set_format */
+ bfd_false},
+ {bfd_false, coff_write_object_contents, /* bfd_write_contents */
+ _bfd_write_archive_contents, bfd_false},
+
+ 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),
+
+ (PTR) &bfd_coff_small_swap_table
+};
+
+const bfd_target shlcoff_small_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 */
+ 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_dummy_target, coff_small_object_p, /* bfd_check_format */
+ bfd_generic_archive_p, _bfd_dummy_target},
+ {bfd_false, coff_mkobject, _bfd_generic_mkarchive, /* bfd_set_format */
+ bfd_false},
+ {bfd_false, coff_write_object_contents, /* bfd_write_contents */
+ _bfd_write_archive_contents, bfd_false},
+
+ 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),
+
+ (PTR) &bfd_coff_small_swap_table
+};
generated by cgit v1.1 at 2024-11-26 16:07:59 +0000