/* Hitachi SH specific support for 32-bit ELF
- Copyright 1996, 97, 98, 1999, 2000 Free Software Foundation, Inc.
+ Copyright 1996, 1997, 1998, 1999, 2000, 2001
+ Free Software Foundation, Inc.
Contributed by Ian Lance Taylor, Cygnus Support.
This file is part of BFD, the Binary File Descriptor library.
/* First entry in an absolute procedure linkage table look like this. */
+#if 1
+/* Note - this code has been "optimised" not to use r2. r2 is used by
+ GCC to return the address of large strutcures, so it should not be
+ corrupted here. This does mean however, that this PLT does not conform
+ to the SH PIC ABI. That spec says that r0 contains the type of the PLT
+ and r2 contains the GOT id. This version stores the GOT id in r0 and
+ ignores the type. Loaders can easily detect this difference however,
+ since the type will always be 0 or 8, and the GOT ids will always be
+ greater than or equal to 12. */
+static const bfd_byte elf_sh_plt0_entry_be[PLT_ENTRY_SIZE] =
+{
+ 0xd0, 0x05, /* mov.l 2f,r0 */
+ 0x60, 0x02, /* mov.l @r0,r0 */
+ 0x2f, 0x06, /* mov.l r0,@-r15 */
+ 0xd0, 0x03, /* mov.l 1f,r0 */
+ 0x60, 0x02, /* mov.l @r0,r0 */
+ 0x40, 0x2b, /* jmp @r0 */
+ 0x60, 0xf6, /* mov.l @r15+,r0 */
+ 0x00, 0x09, /* nop */
+ 0x00, 0x09, /* nop */
+ 0x00, 0x09, /* nop */
+ 0, 0, 0, 0, /* 1: replaced with address of .got.plt + 8. */
+ 0, 0, 0, 0, /* 2: replaced with address of .got.plt + 4. */
+};
+
+static const bfd_byte elf_sh_plt0_entry_le[PLT_ENTRY_SIZE] =
+{
+ 0x05, 0xd0, /* mov.l 2f,r0 */
+ 0x02, 0x60, /* mov.l @r0,r0 */
+ 0x06, 0x2f, /* mov.l r0,@-r15 */
+ 0x03, 0xd0, /* mov.l 1f,r0 */
+ 0x02, 0x60, /* mov.l @r0,r0 */
+ 0x2b, 0x40, /* jmp @r0 */
+ 0xf6, 0x60, /* mov.l @r15+,r0 */
+ 0x09, 0x00, /* nop */
+ 0x09, 0x00, /* nop */
+ 0x09, 0x00, /* nop */
+ 0, 0, 0, 0, /* 1: replaced with address of .got.plt + 8. */
+ 0, 0, 0, 0, /* 2: replaced with address of .got.plt + 4. */
+};
+
+/* Sebsequent entries in an absolute procedure linkage table look like
+ this. */
+
+static const bfd_byte elf_sh_plt_entry_be[PLT_ENTRY_SIZE] =
+{
+ 0xd0, 0x04, /* mov.l 1f,r0 */
+ 0x60, 0x02, /* mov.l @r0,r0 */
+ 0xd1, 0x02, /* mov.l 0f,r1 */
+ 0x40, 0x2b, /* jmp @r0 */
+ 0x60, 0x13, /* mov r1,r0 */
+ 0xd1, 0x03, /* mov.l 2f,r1 */
+ 0x40, 0x2b, /* jmp @r0 */
+ 0x00, 0x09, /* nop */
+ 0, 0, 0, 0, /* 0: replaced with address of .PLT0. */
+ 0, 0, 0, 0, /* 1: replaced with address of this symbol in .got. */
+ 0, 0, 0, 0, /* 2: replaced with offset into relocation table. */
+};
+
+static const bfd_byte elf_sh_plt_entry_le[PLT_ENTRY_SIZE] =
+{
+ 0x04, 0xd0, /* mov.l 1f,r0 */
+ 0x02, 0x60, /* mov.l @r0,r0 */
+ 0x02, 0xd1, /* mov.l 0f,r1 */
+ 0x2b, 0x40, /* jmp @r0 */
+ 0x13, 0x60, /* mov r1,r0 */
+ 0x03, 0xd1, /* mov.l 2f,r1 */
+ 0x2b, 0x40, /* jmp @r0 */
+ 0x09, 0x00, /* nop */
+ 0, 0, 0, 0, /* 0: replaced with address of .PLT0. */
+ 0, 0, 0, 0, /* 1: replaced with address of this symbol in .got. */
+ 0, 0, 0, 0, /* 2: replaced with offset into relocation table. */
+};
+
+/* Entries in a PIC procedure linkage table look like this. */
+
+static const bfd_byte elf_sh_pic_plt_entry_be[PLT_ENTRY_SIZE] =
+{
+ 0xd0, 0x04, /* mov.l 1f,r0 */
+ 0x00, 0xce, /* mov.l @(r0,r12),r0 */
+ 0x40, 0x2b, /* jmp @r0 */
+ 0x00, 0x09, /* nop */
+ 0x50, 0xc2, /* mov.l @(8,r12),r0 */
+ 0xd1, 0x03, /* mov.l 2f,r1 */
+ 0x40, 0x2b, /* jmp @r0 */
+ 0x50, 0xc1, /* mov.l @(4,r12),r0 */
+ 0x00, 0x09, /* nop */
+ 0x00, 0x09, /* nop */
+ 0, 0, 0, 0, /* 1: replaced with address of this symbol in .got. */
+ 0, 0, 0, 0 /* 2: replaced with offset into relocation table. */
+};
+
+static const bfd_byte elf_sh_pic_plt_entry_le[PLT_ENTRY_SIZE] =
+{
+ 0x04, 0xd0, /* mov.l 1f,r0 */
+ 0xce, 0x00, /* mov.l @(r0,r12),r0 */
+ 0x2b, 0x40, /* jmp @r0 */
+ 0x09, 0x00, /* nop */
+ 0xc2, 0x50, /* mov.l @(8,r12),r0 */
+ 0x03, 0xd1, /* mov.l 2f,r1 */
+ 0x2b, 0x40, /* jmp @r0 */
+ 0xc1, 0x50, /* mov.l @(4,r12),r0 */
+ 0x09, 0x00, /* nop */
+ 0x09, 0x00, /* nop */
+ 0, 0, 0, 0, /* 1: replaced with address of this symbol in .got. */
+ 0, 0, 0, 0 /* 2: replaced with offset into relocation table. */
+};
+
+#else /* These are the old style PLT entries. */
static const bfd_byte elf_sh_plt0_entry_be[PLT_ENTRY_SIZE] =
{
0xd0, 0x04, /* mov.l 1f,r0 */
0, 0, 0, 0, /* 1: replaced with address of this symbol in .got. */
0, 0, 0, 0 /* 2: replaced with offset into relocation table. */
};
+#endif /* old style PLT entries. */
static const bfd_byte *elf_sh_plt0_entry;
static const bfd_byte *elf_sh_plt_entry;
break;
case R_SH_IND12W:
+ relocation -= 4;
+ goto final_link_relocate;
+
case R_SH_DIR8WPN:
case R_SH_DIR8WPZ:
case R_SH_DIR8WPL:
- /* These should normally be handled by the assembler, but at
- least IND12W is generated by ourselves, so we must deal
- with it. */
- relocation -= 4;
- goto final_link_relocate;
+ /* If the reloc is against the start of this section, then
+ the assembler has already taken care of it and the reloc
+ is here only to assist in relaxing. If the reloc is not
+ against the start of this section, then it's against an
+ external symbol and we must deal with it ourselves. */
+ if (input_section->output_section->vma + input_section->output_offset
+ != relocation)
+ {
+ int disp = (relocation
+ - input_section->output_section->vma
+ - input_section->output_offset
+ - rel->r_offset);
+ int mask = 0;
+ switch (r_type)
+ {
+ case R_SH_DIR8WPN:
+ case R_SH_DIR8WPZ: mask = 1; break;
+ case R_SH_DIR8WPL: mask = 3; break;
+ default: mask = 0; break;
+ }
+ if (disp & mask)
+ {
+ ((*_bfd_error_handler)
+ (_("%s: 0x%lx: fatal: unaligned branch target for relax-support relocation"),
+ bfd_get_filename (input_section->owner),
+ (unsigned long) rel->r_offset));
+ bfd_set_error (bfd_error_bad_value);
+ return false;
+ }
+ relocation -= 4;
+ goto final_link_relocate;
+ }
+ r = bfd_reloc_ok;
+ break;
default:
bfd_set_error (bfd_error_bad_value);
projects / binutils-gdb.git / blobdiff