/* BFD backend for MIPS BSD (a.out) binaries.
- Copyright (C) 1993 Free Software Foundation, Inc.
+ Copyright (C) 1993, 1994 Free Software Foundation, Inc.
Written by Ralph Campbell.
This file is part of BFD, the Binary File Descriptor library.
Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. */
#define BYTES_IN_WORD 4
-#define ARCH 32
/* #define ENTRY_CAN_BE_ZERO */
#define N_HEADER_IN_TEXT(x) 1
#define N_SHARED_LIB(x) 0
#define MY_bfd_link_hash_table_create _bfd_generic_link_hash_table_create
#define MY_bfd_link_add_symbols _bfd_generic_link_add_symbols
+#define MY_final_link_callback unused
#define MY_bfd_final_link _bfd_generic_final_link
#define MY_backend_data &MY(backend_data)
#define MIPS_RELOC_HI16_S 4
#define MIPS_RELOC_LO16 5
+/*
+ * This is only called when performing a BFD_RELOC_MIPS_JMP relocation.
+ * The jump destination address is formed from the upper 4 bits of the
+ * "current" program counter concatenated with the jump instruction's
+ * 26 bit field and two trailing zeros.
+ * If the destination address is not in the same segment as the "current"
+ * program counter, then we need to signal an error.
+ */
+static bfd_reloc_status_type
+mips_fix_jmp_addr (abfd,reloc_entry,symbol,data,input_section,output_bfd)
+ bfd *abfd;
+ arelent *reloc_entry;
+ struct symbol_cache_entry *symbol;
+ PTR data;
+ asection *input_section;
+ bfd *output_bfd;
+{
+ bfd_vma relocation, pc;
+
+ /* If this is a partial relocation, just continue. */
+ if (output_bfd != (bfd *)NULL)
+ return bfd_reloc_continue;
+
+ /* If this is an undefined symbol, return error */
+ if (bfd_is_und_section (symbol->section)
+ && (symbol->flags & BSF_WEAK) == 0)
+ return bfd_reloc_undefined;
+
+ /*
+ * Work out which section the relocation is targetted at and the
+ * initial relocation command value.
+ */
+ if (bfd_is_com_section (symbol->section))
+ relocation = 0;
+ else
+ relocation = symbol->value;
+
+ relocation += symbol->section->output_section->vma;
+ relocation += symbol->section->output_offset;
+ relocation += reloc_entry->addend;
+
+ pc = input_section->output_section->vma + input_section->output_offset +
+ reloc_entry->address + 4;
+
+ if ((relocation & 0xF0000000) != (pc & 0xF0000000))
+ return bfd_reloc_overflow;
+
+ return bfd_reloc_continue;
+}
+
/*
* This is only called when performing a BFD_RELOC_HI16_S relocation.
* We need to see if bit 15 is set in the result. If it is, we add
if (output_bfd != (bfd *)NULL)
return bfd_reloc_continue;
+ /* If this is an undefined symbol, return error */
+ if (bfd_is_und_section (symbol->section)
+ && (symbol->flags & BSF_WEAK) == 0)
+ return bfd_reloc_undefined;
+
/*
* Work out which section the relocation is targetted at and the
* initial relocation command value.
*/
- if (symbol->section == &bfd_com_section)
+ if (bfd_is_com_section (symbol->section))
relocation = 0;
else
relocation = symbol->value;
static reloc_howto_type mips_howto_table_ext[] = {
{MIPS_RELOC_32, 0, 2, 32, false, 0, complain_overflow_bitfield, 0,
"32", false, 0, 0xffffffff, false},
- {MIPS_RELOC_JMP, 2, 2, 26, false, 0, complain_overflow_bitfield, 0,
+ {MIPS_RELOC_JMP, 2, 2, 26, false, 0, complain_overflow_dont,
+ mips_fix_jmp_addr,
"MIPS_JMP", false, 0, 0x03ffffff, false},
- {MIPS_RELOC_WDISP16, 2, 1, 16, true, 0, complain_overflow_signed, 0,
+ {MIPS_RELOC_WDISP16, 2, 2, 16, true, 0, complain_overflow_signed, 0,
"WDISP16", false, 0, 0x0000ffff, false},
- {MIPS_RELOC_HI16, 16, 1, 16, false, 0, complain_overflow_bitfield, 0,
+ {MIPS_RELOC_HI16, 16, 2, 16, false, 0, complain_overflow_bitfield, 0,
"HI16", false, 0, 0x0000ffff, false},
- {MIPS_RELOC_HI16_S, 16, 1, 16, false, 0, complain_overflow_bitfield,
+ {MIPS_RELOC_HI16_S, 16, 2, 16, false, 0, complain_overflow_bitfield,
mips_fix_hi16_s,
"HI16_S", false, 0, 0x0000ffff, false},
- {MIPS_RELOC_LO16, 0, 1, 16, false, 0, complain_overflow_dont, 0,
+ {MIPS_RELOC_LO16, 0, 2, 16, false, 0, complain_overflow_dont, 0,
"LO16", false, 0, 0x0000ffff, false},
};
switch (code)
{
+ case BFD_RELOC_CTOR:
case BFD_RELOC_32:
return (&mips_howto_table_ext[MIPS_RELOC_32]);
case BFD_RELOC_MIPS_JMP:
if (!NAME(aout,slurp_reloc_table)(abfd, section, symbols))
return -1;
tblptr = section->relocation;
- if (!tblptr)
- return -1;
/* fix up howto entries */
for (count = 0; count++ < section->reloc_count;)
static CONST struct aout_backend_data MY(backend_data) = {
0, /* zmagic contiguous */
1, /* text incl header */
+ 0, /* exec_hdr_flags */
PAGE_SIZE, /* text vma */
MY_set_sizes,
0, /* text size includes exec header */
+ 0, /* add_dynamic_symbols */
+ 0, /* add_one_symbol */
+ 0, /* link_dynamic_object */
+ 0, /* write_dynamic_symbol */
+ 0, /* check_dynamic_reloc */
+ 0 /* finish_dynamic_link */
};
-bfd_target aout_mips_little_vec =
+const bfd_target aout_mips_little_vec =
{
"a.out-mips-little", /* name */
bfd_target_aout_flavour,
_bfd_generic_mkarchive, bfd_false},
{bfd_false, MY_write_object_contents, /* bfd_write_contents */
_bfd_write_archive_contents, bfd_false},
- JUMP_TABLE (MY),
+
+ BFD_JUMP_TABLE_GENERIC (MY),
+ BFD_JUMP_TABLE_COPY (MY),
+ BFD_JUMP_TABLE_CORE (MY),
+ BFD_JUMP_TABLE_ARCHIVE (MY),
+ BFD_JUMP_TABLE_SYMBOLS (MY),
+ BFD_JUMP_TABLE_RELOCS (MY),
+ BFD_JUMP_TABLE_WRITE (MY),
+ BFD_JUMP_TABLE_LINK (MY),
+ BFD_JUMP_TABLE_DYNAMIC (_bfd_nodynamic),
+
(PTR) MY_backend_data,
};
-bfd_target aout_mips_big_vec =
+const bfd_target aout_mips_big_vec =
{
"a.out-mips-big", /* name */
bfd_target_aout_flavour,
_bfd_generic_mkarchive, bfd_false},
{bfd_false, MY_write_object_contents, /* bfd_write_contents */
_bfd_write_archive_contents, bfd_false},
- JUMP_TABLE (MY),
+
+ BFD_JUMP_TABLE_GENERIC (MY),
+ BFD_JUMP_TABLE_COPY (MY),
+ BFD_JUMP_TABLE_CORE (MY),
+ BFD_JUMP_TABLE_ARCHIVE (MY),
+ BFD_JUMP_TABLE_SYMBOLS (MY),
+ BFD_JUMP_TABLE_RELOCS (MY),
+ BFD_JUMP_TABLE_WRITE (MY),
+ BFD_JUMP_TABLE_LINK (MY),
+ BFD_JUMP_TABLE_DYNAMIC (_bfd_nodynamic),
+
(PTR) MY_backend_data,
};
projects / deliverable / binutils-gdb.git / blobdiff