. generally untested.
. - Relocation handling for RELA relocs related to GOT support are
. also likely to be wrong.
- . - Support for MIPS16 is only partially implemented.
- . - Embedded PIC is only partially implemented (is it needed?).
+ . - Support for MIPS16 is untested.
. - Combined relocs with RSS_* entries are unsupported.
. - The whole GOT handling for NewABI is missing, some parts of
. the OldABI version is still lying around and should be removed.
PARAMS((bfd *, asection *, Elf_Internal_Shdr *, int *, PTR));
static bfd_reloc_status_type mips_elf64_hi16_reloc
PARAMS ((bfd *, arelent *, asymbol *, PTR, asection *, bfd *, char **));
-static bfd_reloc_status_type mips_elf64_higher_reloc
- PARAMS ((bfd *, arelent *, asymbol *, PTR, asection *, bfd *, char **));
-static bfd_reloc_status_type mips_elf64_highest_reloc
- PARAMS ((bfd *, arelent *, asymbol *, PTR, asection *, bfd *, char **));
static bfd_reloc_status_type mips_elf64_gprel16_reloc
PARAMS ((bfd *, arelent *, asymbol *, PTR, asection *, bfd *, char **));
-static bfd_reloc_status_type mips_elf64_gprel16_reloca
- PARAMS ((bfd *, arelent *, asymbol *, PTR, asection *, bfd *, char **));
static bfd_reloc_status_type mips_elf64_literal_reloc
PARAMS ((bfd *, arelent *, asymbol *, PTR, asection *, bfd *, char **));
static bfd_reloc_status_type mips_elf64_gprel32_reloc
PARAMS ((bfd *, arelent *, asymbol *, PTR, asection *, bfd *, char **));
static bfd_reloc_status_type mips_elf64_got16_reloc
PARAMS ((bfd *, arelent *, asymbol *, PTR, asection *, bfd *, char **));
+static bfd_reloc_status_type mips16_jump_reloc
+ PARAMS ((bfd *, arelent *, asymbol *, PTR, asection *, bfd *, char **));
+static bfd_reloc_status_type mips16_gprel_reloc
+ PARAMS ((bfd *, arelent *, asymbol *, PTR, asection *, bfd *, char **));
static boolean mips_elf64_assign_gp PARAMS ((bfd *, bfd_vma *));
static bfd_reloc_status_type mips_elf64_final_gp
PARAMS ((bfd *, asymbol *, boolean, char **, bfd_vma *));
static boolean mips_elf64_object_p PARAMS ((bfd *));
static irix_compat_t elf64_mips_irix_compat PARAMS ((bfd *));
-extern const bfd_target bfd_elf64_tradbigmips_vec;
-extern const bfd_target bfd_elf64_tradlittlemips_vec;
-
-static bfd_vma prev_reloc_addend = 0;
-static bfd_size_type prev_reloc_address = 0;
-
-/* Whether we are trying to be compatible with IRIX6 (or little endianers
- which are otherwise IRIX-ABI compliant). */
-#define SGI_COMPAT(abfd) \
- (elf64_mips_irix_compat (abfd) != ict_none)
+extern const bfd_target bfd_elf64_bigmips_vec;
+extern const bfd_target bfd_elf64_littlemips_vec;
/* In case we're on a 32-bit machine, construct a 64-bit "-1" value
from smaller values. Start with zero, widen, *then* decrement. */
\f
/* The relocation table used for SHT_REL sections. */
-#define UNUSED_RELOC(num) { num, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 }
-
static reloc_howto_type mips_elf64_howto_table_rel[] =
{
/* No relocation. */
0x03ffffff, /* dst_mask */
false), /* pcrel_offset */
+ /* R_MIPS_HI16 and R_MIPS_LO16 are unsupported for NewABI REL.
+ However, the native IRIX6 tools use them, so we try our best. */
+
/* High 16 bits of symbol value. */
HOWTO (R_MIPS_HI16, /* type */
0, /* rightshift */
false, /* pc_relative */
0, /* bitpos */
complain_overflow_dont, /* complain_on_overflow */
- bfd_elf_generic_reloc, /* special_function */
+ mips_elf64_hi16_reloc, /* special_function */
"R_MIPS_HI16", /* name */
true, /* partial_inplace */
0x0000ffff, /* src_mask */
true), /* pcrel_offset */
/* 16 bit call through global offset table. */
- /* FIXME: This is not handled correctly. */
HOWTO (R_MIPS_CALL16, /* type */
0, /* rightshift */
2, /* size (0 = byte, 1 = short, 2 = long) */
0xffffffff, /* dst_mask */
false), /* pcrel_offset */
- UNUSED_RELOC (13),
- UNUSED_RELOC (14),
- UNUSED_RELOC (15),
+ EMPTY_HOWTO (13),
+ EMPTY_HOWTO (14),
+ EMPTY_HOWTO (15),
/* A 5 bit shift field. */
HOWTO (R_MIPS_SHIFT5, /* type */
false), /* pcrel_offset */
/* Displacement in the global offset table. */
- /* FIXME: Not handled correctly. */
HOWTO (R_MIPS_GOT_DISP, /* type */
0, /* rightshift */
2, /* size (0 = byte, 1 = short, 2 = long) */
false), /* pcrel_offset */
/* Displacement to page pointer in the global offset table. */
- /* FIXME: Not handled correctly. */
HOWTO (R_MIPS_GOT_PAGE, /* type */
0, /* rightshift */
2, /* size (0 = byte, 1 = short, 2 = long) */
false), /* pcrel_offset */
/* Offset from page pointer in the global offset table. */
- /* FIXME: Not handled correctly. */
HOWTO (R_MIPS_GOT_OFST, /* type */
0, /* rightshift */
2, /* size (0 = byte, 1 = short, 2 = long) */
false), /* pcrel_offset */
/* High 16 bits of displacement in global offset table. */
- /* FIXME: Not handled correctly. */
HOWTO (R_MIPS_GOT_HI16, /* type */
0, /* rightshift */
2, /* size (0 = byte, 1 = short, 2 = long) */
false), /* pcrel_offset */
/* Low 16 bits of displacement in global offset table. */
- /* FIXME: Not handled correctly. */
HOWTO (R_MIPS_GOT_LO16, /* type */
0, /* rightshift */
2, /* size (0 = byte, 1 = short, 2 = long) */
false), /* pcrel_offset */
/* 64 bit substraction. */
- /* FIXME: Not handled correctly. */
HOWTO (R_MIPS_SUB, /* type */
0, /* rightshift */
4, /* size (0 = byte, 1 = short, 2 = long) */
0xffffffff, /* dst_mask */
false), /* pcrel_offset */
- /* Get the higher value of a 64 bit addend. */
- HOWTO (R_MIPS_HIGHER, /* type */
- 0, /* rightshift */
- 2, /* size (0 = byte, 1 = short, 2 = long) */
- 16, /* bitsize */
- false, /* pc_relative */
- 0, /* bitpos */
- complain_overflow_dont, /* complain_on_overflow */
- mips_elf64_higher_reloc, /* special_function */
- "R_MIPS_HIGHER", /* name */
- true, /* partial_inplace */
- 0x0000ffff, /* src_mask */
- 0x0000ffff, /* dst_mask */
- false), /* pcrel_offset */
-
- /* Get the highest value of a 64 bit addend. */
- HOWTO (R_MIPS_HIGHEST, /* type */
- 0, /* rightshift */
- 2, /* size (0 = byte, 1 = short, 2 = long) */
- 16, /* bitsize */
- false, /* pc_relative */
- 0, /* bitpos */
- complain_overflow_dont, /* complain_on_overflow */
- mips_elf64_highest_reloc, /* special_function */
- "R_MIPS_HIGHEST", /* name */
- true, /* partial_inplace */
- 0x0000ffff, /* src_mask */
- 0x0000ffff, /* dst_mask */
- false), /* pcrel_offset */
+ /* The MIPS ELF64 ABI Draft wants us to support these for REL relocations.
+ We don't, because
+ a) It means building the addend from a R_MIPS_HIGHEST/R_MIPS_HIGHER/
+ R_MIPS_HI16/R_MIPS_LO16 sequence with varying ordering, using
+ fallable heuristics.
+ b) No other NewABI toolchain actually emits such relocations. */
+ EMPTY_HOWTO (R_MIPS_HIGHER),
+ EMPTY_HOWTO (R_MIPS_HIGHEST),
/* High 16 bits of displacement in global offset table. */
- /* FIXME: Not handled correctly. */
HOWTO (R_MIPS_CALL_HI16, /* type */
0, /* rightshift */
2, /* size (0 = byte, 1 = short, 2 = long) */
false), /* pcrel_offset */
/* Low 16 bits of displacement in global offset table. */
- /* FIXME: Not handled correctly. */
HOWTO (R_MIPS_CALL_LO16, /* type */
0, /* rightshift */
2, /* size (0 = byte, 1 = short, 2 = long) */
false), /* pcrel_offset */
/* Section displacement, used by an associated event location section. */
- /* FIXME: Not handled correctly. */
HOWTO (R_MIPS_SCN_DISP, /* type */
0, /* rightshift */
2, /* size (0 = byte, 1 = short, 2 = long) */
0x03ffffff, /* dst_mask */
false), /* pcrel_offset */
- /* R_MIPS_HI16 and R_MIPS_LO16 are unsupported for 64 bit REL. */
/* High 16 bits of symbol value. */
HOWTO (R_MIPS_HI16, /* type */
0, /* rightshift */
false, /* pc_relative */
0, /* bitpos */
complain_overflow_signed, /* complain_on_overflow */
- mips_elf64_gprel16_reloca, /* special_function */
+ mips_elf64_gprel16_reloc, /* special_function */
"R_MIPS_GPREL16", /* name */
false, /* partial_inplace */
0, /* src_mask */
false), /* pcrel_offset */
/* Reference to global offset table. */
- /* FIXME: This is not handled correctly. */
HOWTO (R_MIPS_GOT16, /* type */
0, /* rightshift */
2, /* size (0 = byte, 1 = short, 2 = long) */
false, /* pc_relative */
0, /* bitpos */
complain_overflow_signed, /* complain_on_overflow */
- bfd_elf_generic_reloc, /* special_function */
+ mips_elf64_got16_reloc, /* special_function */
"R_MIPS_GOT16", /* name */
false, /* partial_inplace */
0, /* src_mask */
true), /* pcrel_offset */
/* 16 bit call through global offset table. */
- /* FIXME: This is not handled correctly. */
HOWTO (R_MIPS_CALL16, /* type */
0, /* rightshift */
2, /* size (0 = byte, 1 = short, 2 = long) */
0xffffffff, /* dst_mask */
false), /* pcrel_offset */
- UNUSED_RELOC (13),
- UNUSED_RELOC (14),
- UNUSED_RELOC (15),
+ EMPTY_HOWTO (13),
+ EMPTY_HOWTO (14),
+ EMPTY_HOWTO (15),
/* A 5 bit shift field. */
HOWTO (R_MIPS_SHIFT5, /* type */
false), /* pcrel_offset */
/* Displacement in the global offset table. */
- /* FIXME: Not handled correctly. */
HOWTO (R_MIPS_GOT_DISP, /* type */
0, /* rightshift */
2, /* size (0 = byte, 1 = short, 2 = long) */
false), /* pcrel_offset */
/* Displacement to page pointer in the global offset table. */
- /* FIXME: Not handled correctly. */
HOWTO (R_MIPS_GOT_PAGE, /* type */
0, /* rightshift */
2, /* size (0 = byte, 1 = short, 2 = long) */
false), /* pcrel_offset */
/* Offset from page pointer in the global offset table. */
- /* FIXME: Not handled correctly. */
HOWTO (R_MIPS_GOT_OFST, /* type */
0, /* rightshift */
2, /* size (0 = byte, 1 = short, 2 = long) */
false), /* pcrel_offset */
/* High 16 bits of displacement in global offset table. */
- /* FIXME: Not handled correctly. */
HOWTO (R_MIPS_GOT_HI16, /* type */
0, /* rightshift */
2, /* size (0 = byte, 1 = short, 2 = long) */
false), /* pcrel_offset */
/* Low 16 bits of displacement in global offset table. */
- /* FIXME: Not handled correctly. */
HOWTO (R_MIPS_GOT_LO16, /* type */
0, /* rightshift */
2, /* size (0 = byte, 1 = short, 2 = long) */
false), /* pcrel_offset */
/* 64 bit substraction. */
- /* FIXME: Not handled correctly. */
HOWTO (R_MIPS_SUB, /* type */
0, /* rightshift */
4, /* size (0 = byte, 1 = short, 2 = long) */
false), /* pcrel_offset */
/* High 16 bits of displacement in global offset table. */
- /* FIXME: Not handled correctly. */
HOWTO (R_MIPS_CALL_HI16, /* type */
0, /* rightshift */
2, /* size (0 = byte, 1 = short, 2 = long) */
false), /* pcrel_offset */
/* Low 16 bits of displacement in global offset table. */
- /* FIXME: Not handled correctly. */
HOWTO (R_MIPS_CALL_LO16, /* type */
0, /* rightshift */
2, /* size (0 = byte, 1 = short, 2 = long) */
false), /* pcrel_offset */
/* Section displacement, used by an associated event location section. */
- /* FIXME: Not handled correctly. */
HOWTO (R_MIPS_SCN_DISP, /* type */
0, /* rightshift */
2, /* size (0 = byte, 1 = short, 2 = long) */
0x00000000, /* dst_mask */
false), /* pcrel_offset */
};
+
+/* The reloc used for the mips16 jump instruction. */
+static reloc_howto_type elf_mips16_jump_howto =
+ HOWTO (R_MIPS16_26, /* type */
+ 2, /* rightshift */
+ 2, /* size (0 = byte, 1 = short, 2 = long) */
+ 26, /* bitsize */
+ false, /* pc_relative */
+ 0, /* bitpos */
+ complain_overflow_dont, /* complain_on_overflow */
+ /* This needs complex overflow
+ detection, because the upper four
+ bits must match the PC. */
+ mips16_jump_reloc, /* special_function */
+ "R_MIPS16_26", /* name */
+ true, /* partial_inplace */
+ 0x3ffffff, /* src_mask */
+ 0x3ffffff, /* dst_mask */
+ false); /* pcrel_offset */
+
+/* The reloc used for the mips16 gprel instruction. */
+static reloc_howto_type elf_mips16_gprel_howto =
+ HOWTO (R_MIPS16_GPREL, /* type */
+ 0, /* rightshift */
+ 2, /* size (0 = byte, 1 = short, 2 = long) */
+ 16, /* bitsize */
+ false, /* pc_relative */
+ 0, /* bitpos */
+ complain_overflow_signed, /* complain_on_overflow */
+ mips16_gprel_reloc, /* special_function */
+ "R_MIPS16_GPREL", /* name */
+ true, /* partial_inplace */
+ 0x07ff001f, /* src_mask */
+ 0x07ff001f, /* dst_mask */
+ false); /* pcrel_offset */
+
+/* GNU extension to record C++ vtable hierarchy */
+static reloc_howto_type elf_mips_gnu_vtinherit_howto =
+ HOWTO (R_MIPS_GNU_VTINHERIT, /* type */
+ 0, /* rightshift */
+ 2, /* size (0 = byte, 1 = short, 2 = long) */
+ 0, /* bitsize */
+ false, /* pc_relative */
+ 0, /* bitpos */
+ complain_overflow_dont, /* complain_on_overflow */
+ NULL, /* special_function */
+ "R_MIPS_GNU_VTINHERIT", /* name */
+ false, /* partial_inplace */
+ 0, /* src_mask */
+ 0, /* dst_mask */
+ false); /* pcrel_offset */
+
+/* GNU extension to record C++ vtable member usage */
+static reloc_howto_type elf_mips_gnu_vtentry_howto =
+ HOWTO (R_MIPS_GNU_VTENTRY, /* type */
+ 0, /* rightshift */
+ 2, /* size (0 = byte, 1 = short, 2 = long) */
+ 0, /* bitsize */
+ false, /* pc_relative */
+ 0, /* bitpos */
+ complain_overflow_dont, /* complain_on_overflow */
+ _bfd_elf_rel_vtable_reloc_fn, /* special_function */
+ "R_MIPS_GNU_VTENTRY", /* name */
+ false, /* partial_inplace */
+ 0, /* src_mask */
+ 0, /* dst_mask */
+ false); /* pcrel_offset */
\f
/* Swap in a MIPS 64-bit Rel reloc. */
mirel.r_offset = src[0].r_offset;
BFD_ASSERT(src[0].r_offset == src[1].r_offset);
+#if 0
BFD_ASSERT(src[0].r_offset == src[2].r_offset);
+#endif
mirel.r_type = ELF64_MIPS_R_TYPE (src[0].r_info);
mirel.r_sym = ELF64_R_SYM (src[0].r_info);
- mirel.r_type2 = ELF64_MIPS_R_TYPE2 (src[1].r_info);
+ mirel.r_type2 = ELF64_MIPS_R_TYPE (src[1].r_info);
mirel.r_ssym = ELF64_MIPS_R_SSYM (src[1].r_info);
- mirel.r_type3 = ELF64_MIPS_R_TYPE3 (src[2].r_info);
+ mirel.r_type3 = ELF64_MIPS_R_TYPE (src[2].r_info);
mips_elf64_swap_reloc_out (abfd, &mirel,
(Elf64_Mips_External_Rel *) dst);
BFD_ASSERT(src[1].r_addend == 0);
BFD_ASSERT(src[2].r_addend == 0);
- mirela.r_type2 = ELF64_MIPS_R_TYPE2 (src[1].r_info);
+ mirela.r_type2 = ELF64_MIPS_R_TYPE (src[1].r_info);
mirela.r_ssym = ELF64_MIPS_R_SSYM (src[1].r_info);
- mirela.r_type3 = ELF64_MIPS_R_TYPE3 (src[2].r_info);
+ mirela.r_type3 = ELF64_MIPS_R_TYPE (src[2].r_info);
mips_elf64_swap_reloca_out (abfd, &mirela,
(Elf64_Mips_External_Rela *) dst);
\f
/* Do a R_MIPS_HI16 relocation. */
-bfd_reloc_status_type
-mips_elf64_hi16_reloc (abfd,
- reloc_entry,
- symbol,
- data,
- input_section,
- output_bfd,
- error_message)
+static bfd_reloc_status_type
+mips_elf64_hi16_reloc (abfd, reloc_entry, symbol, data, input_section,
+ output_bfd, error_message)
bfd *abfd ATTRIBUTE_UNUSED;
arelent *reloc_entry;
asymbol *symbol;
return bfd_reloc_continue;
}
-/* Do a R_MIPS_HIGHER relocation. */
-
-bfd_reloc_status_type
-mips_elf64_higher_reloc (abfd,
- reloc_entry,
- symbol,
- data,
- input_section,
- output_bfd,
- error_message)
- bfd *abfd ATTRIBUTE_UNUSED;
- arelent *reloc_entry;
- asymbol *symbol;
- PTR data ATTRIBUTE_UNUSED;
- asection *input_section;
- bfd *output_bfd;
- char **error_message ATTRIBUTE_UNUSED;
-{
- /* If we're relocating, and this is an external symbol, we don't
- want to change anything. */
- if (output_bfd != (bfd *) NULL
- && (symbol->flags & BSF_SECTION_SYM) == 0
- && (! reloc_entry->howto->partial_inplace
- || reloc_entry->addend == 0))
- {
- reloc_entry->address += input_section->output_offset;
- return bfd_reloc_ok;
- }
-
- if (((reloc_entry->addend & 0xffffffff) + 0x80008000)
- & ~0xffffffff)
- reloc_entry->addend += 0x80008000;
-
- return bfd_reloc_continue;
-}
-
-/* Do a R_MIPS_HIGHEST relocation. */
-
-bfd_reloc_status_type
-mips_elf64_highest_reloc (abfd,
- reloc_entry,
- symbol,
- data,
- input_section,
- output_bfd,
- error_message)
- bfd *abfd ATTRIBUTE_UNUSED;
- arelent *reloc_entry;
- asymbol *symbol;
- PTR data ATTRIBUTE_UNUSED;
- asection *input_section;
- bfd *output_bfd;
- char **error_message ATTRIBUTE_UNUSED;
-{
- /* If we're relocating, and this is an external symbol, we don't
- want to change anything. */
- if (output_bfd != (bfd *) NULL
- && (symbol->flags & BSF_SECTION_SYM) == 0
- && (! reloc_entry->howto->partial_inplace
- || reloc_entry->addend == 0))
- {
- reloc_entry->address += input_section->output_offset;
- return bfd_reloc_ok;
- }
-
- if (((reloc_entry->addend & 0xffffffffffff) + 0x800080008000)
- & ~0xffffffffffff)
- reloc_entry->addend += 0x800080008000;
-
- return bfd_reloc_continue;
-}
-
/* Do a R_MIPS_GOT16 reloc. This is a reloc against the global offset
table used for PIC code. If the symbol is an external symbol, the
instruction is modified to contain the offset of the appropriate
This implementation suffices for the assembler, but the linker does
not yet know how to create global offset tables. */
-bfd_reloc_status_type
-mips_elf64_got16_reloc (abfd,
- reloc_entry,
- symbol,
- data,
- input_section,
- output_bfd,
- error_message)
+static bfd_reloc_status_type
+mips_elf64_got16_reloc (abfd, reloc_entry, symbol, data, input_section,
+ output_bfd, error_message)
bfd *abfd;
arelent *reloc_entry;
asymbol *symbol;
bfd *output_bfd;
char **error_message;
{
- /* If we're relocating, and this an external symbol, we don't want
- to change anything. */
- if (output_bfd != (bfd *) NULL
- && (symbol->flags & BSF_SECTION_SYM) == 0
- && reloc_entry->addend == 0)
- {
- reloc_entry->address += input_section->output_offset;
- return bfd_reloc_ok;
- }
-
/* If we're relocating, and this is a local symbol, we can handle it
- just like HI16. */
+ just like an R_MIPS_HI16. */
if (output_bfd != (bfd *) NULL
&& (symbol->flags & BSF_SECTION_SYM) != 0)
return mips_elf64_hi16_reloc (abfd, reloc_entry, symbol, data,
input_section, output_bfd, error_message);
- abort ();
+
+ /* Otherwise we try to handle it as R_MIPS_GOT_DISP. */
+ return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data,
+ input_section, output_bfd, error_message);
}
/* Set the GP value for OUTPUT_BFD. Returns false if this is a
if (relocateable)
{
/* Make up a value. */
- *pgp = symbol->section->output_section->vma + 0x4000;
+ *pgp = symbol->section->output_section->vma /*+ 0x4000*/;
_bfd_set_gp_value (output_bfd, *pgp);
}
else if (!mips_elf64_assign_gp (output_bfd, pgp))
/* Do a R_MIPS_GPREL16 relocation. This is a 16 bit value which must
become the offset from the gp register. */
-bfd_reloc_status_type
+static bfd_reloc_status_type
mips_elf64_gprel16_reloc (abfd, reloc_entry, symbol, data, input_section,
output_bfd, error_message)
bfd *abfd;
file. */
if (output_bfd != (bfd *) NULL
&& (symbol->flags & BSF_SECTION_SYM) == 0
- && reloc_entry->addend == 0)
+ && (! reloc_entry->howto->partial_inplace
+ || reloc_entry->addend == 0))
{
reloc_entry->address += input_section->output_offset;
return bfd_reloc_ok;
data, gp);
}
-/* Do a R_MIPS_GPREL16 RELA relocation. */
+/* Do a R_MIPS_LITERAL relocation. */
-bfd_reloc_status_type
-mips_elf64_gprel16_reloca (abfd, reloc_entry, symbol, data, input_section,
- output_bfd, error_message)
+static bfd_reloc_status_type
+mips_elf64_literal_reloc (abfd, reloc_entry, symbol, data, input_section,
+ output_bfd, error_message)
bfd *abfd;
arelent *reloc_entry;
asymbol *symbol;
- PTR data ATTRIBUTE_UNUSED;
+ PTR data;
asection *input_section;
bfd *output_bfd;
char **error_message;
{
boolean relocateable;
+ bfd_reloc_status_type ret;
bfd_vma gp;
- /* This works only for NewABI. */
- BFD_ASSERT (reloc_entry->howto->src_mask == 0);
-
- /* If we're relocating, and this is an external symbol with no
- addend, we don't want to change anything. We will only have an
- addend if this is a newly created reloc, not read from an ELF
- file. */
+ /* If we're relocating, and this is an external symbol, we don't
+ want to change anything. */
if (output_bfd != (bfd *) NULL
&& (symbol->flags & BSF_SECTION_SYM) == 0
- && reloc_entry->addend == 0)
+ && (! reloc_entry->howto->partial_inplace
+ || reloc_entry->addend == 0))
{
reloc_entry->address += input_section->output_offset;
return bfd_reloc_ok;
}
+ /* FIXME: The entries in the .lit8 and .lit4 sections should be merged. */
if (output_bfd != (bfd *) NULL)
relocateable = true;
else
output_bfd = symbol->section->output_section->owner;
}
- if (prev_reloc_address != reloc_entry->address)
- prev_reloc_address = reloc_entry->address;
- else
- {
- mips_elf64_final_gp (output_bfd, symbol, relocateable, error_message,
- &gp);
- prev_reloc_addend = reloc_entry->addend + reloc_entry->address - gp;
- if (symbol->flags & BSF_LOCAL)
- prev_reloc_addend += _bfd_get_gp_value (abfd);
-/*fprintf(stderr, "Addend: %lx, Next Addend: %lx\n", reloc_entry->addend, prev_reloc_addend);*/
- }
+ ret = mips_elf64_final_gp (output_bfd, symbol, relocateable, error_message,
+ &gp);
+ if (ret != bfd_reloc_ok)
+ return ret;
- return bfd_reloc_ok;
+ return _bfd_mips_elf_gprel16_with_gp (abfd, symbol, reloc_entry,
+ input_section, relocateable,
+ data, gp);
}
-/* Do a R_MIPS_LITERAL relocation. */
+/* Do a R_MIPS_GPREL32 relocation. This is a 32 bit value which must
+ become the offset from the gp register. */
-bfd_reloc_status_type
-mips_elf64_literal_reloc (abfd, reloc_entry, symbol, data, input_section,
+static bfd_reloc_status_type
+mips_elf64_gprel32_reloc (abfd, reloc_entry, symbol, data, input_section,
output_bfd, error_message)
bfd *abfd;
arelent *reloc_entry;
asection *input_section;
bfd *output_bfd;
char **error_message;
-{
- /* If we're relocating, and this is an external symbol, we don't
- want to change anything. */
- if (output_bfd != (bfd *) NULL
- && (symbol->flags & BSF_SECTION_SYM) == 0
- && (! reloc_entry->howto->partial_inplace
- || reloc_entry->addend == 0))
- {
- reloc_entry->address += input_section->output_offset;
- return bfd_reloc_ok;
- }
-
- /* FIXME: The entries in the .lit8 and .lit4 sections should be merged.
- Currently we simply call mips_elf64_gprel16_reloc. */
- return mips_elf64_gprel16_reloc (abfd, reloc_entry, symbol, data,
- input_section, output_bfd, error_message);
-}
-
-/* Do a R_MIPS_GPREL32 relocation. Is this 32 bit value the offset
- from the gp register? XXX */
-
-bfd_reloc_status_type
-mips_elf64_gprel32_reloc (abfd,
- reloc_entry,
- symbol,
- data,
- input_section,
- output_bfd,
- error_message)
- bfd *abfd;
- arelent *reloc_entry;
- asymbol *symbol;
- PTR data;
- asection *input_section;
- bfd *output_bfd;
- char **error_message;
{
boolean relocateable;
bfd_reloc_status_type ret;
}
/* Do a R_MIPS_SHIFT6 relocation. The MSB of the shift is stored at bit 2,
- the rest is at bits 6-10. The bitpos alredy got right by the howto. */
+ the rest is at bits 6-10. The bitpos already got right by the howto. */
-bfd_reloc_status_type
+static bfd_reloc_status_type
mips_elf64_shift6_reloc (abfd, reloc_entry, symbol, data, input_section,
output_bfd, error_message)
bfd *abfd ATTRIBUTE_UNUSED;
return bfd_reloc_continue;
}
+/* Handle a mips16 jump. */
+
+static bfd_reloc_status_type
+mips16_jump_reloc (abfd, reloc_entry, symbol, data, input_section,
+ output_bfd, error_message)
+ bfd *abfd ATTRIBUTE_UNUSED;
+ arelent *reloc_entry;
+ asymbol *symbol;
+ PTR data ATTRIBUTE_UNUSED;
+ asection *input_section;
+ bfd *output_bfd;
+ char **error_message ATTRIBUTE_UNUSED;
+{
+ if (output_bfd != (bfd *) NULL
+ && (symbol->flags & BSF_SECTION_SYM) == 0
+ && (! reloc_entry->howto->partial_inplace
+ || reloc_entry->addend == 0))
+ {
+ reloc_entry->address += input_section->output_offset;
+ return bfd_reloc_ok;
+ }
+
+ /* FIXME. */
+ {
+ static boolean warned;
+
+ if (! warned)
+ (*_bfd_error_handler)
+ (_("Linking mips16 objects into %s format is not supported"),
+ bfd_get_target (input_section->output_section->owner));
+ warned = true;
+ }
+
+ return bfd_reloc_undefined;
+}
+
+/* Handle a mips16 GP relative reloc. */
+
+static bfd_reloc_status_type
+mips16_gprel_reloc (abfd, reloc_entry, symbol, data, input_section,
+ output_bfd, error_message)
+ bfd *abfd;
+ arelent *reloc_entry;
+ asymbol *symbol;
+ PTR data;
+ asection *input_section;
+ bfd *output_bfd;
+ char **error_message;
+{
+ boolean relocateable;
+ bfd_reloc_status_type ret;
+ bfd_vma gp;
+ unsigned short extend, insn;
+ unsigned long final;
+
+ /* If we're relocating, and this is an external symbol with no
+ addend, we don't want to change anything. We will only have an
+ addend if this is a newly created reloc, not read from an ELF
+ file. */
+ if (output_bfd != NULL
+ && (symbol->flags & BSF_SECTION_SYM) == 0
+ && reloc_entry->addend == 0)
+ {
+ reloc_entry->address += input_section->output_offset;
+ return bfd_reloc_ok;
+ }
+
+ if (output_bfd != NULL)
+ relocateable = true;
+ else
+ {
+ relocateable = false;
+ output_bfd = symbol->section->output_section->owner;
+ }
+
+ ret = mips_elf64_final_gp (output_bfd, symbol, relocateable, error_message,
+ &gp);
+ if (ret != bfd_reloc_ok)
+ return ret;
+
+ if (reloc_entry->address > input_section->_cooked_size)
+ return bfd_reloc_outofrange;
+
+ /* Pick up the mips16 extend instruction and the real instruction. */
+ extend = bfd_get_16 (abfd, (bfd_byte *) data + reloc_entry->address);
+ insn = bfd_get_16 (abfd, (bfd_byte *) data + reloc_entry->address + 2);
+
+ /* Stuff the current addend back as a 32 bit value, do the usual
+ relocation, and then clean up. */
+ bfd_put_32 (abfd,
+ (bfd_vma) (((extend & 0x1f) << 11)
+ | (extend & 0x7e0)
+ | (insn & 0x1f)),
+ (bfd_byte *) data + reloc_entry->address);
+
+ ret = _bfd_mips_elf_gprel16_with_gp (abfd, symbol, reloc_entry,
+ input_section, relocateable, data, gp);
+
+ final = bfd_get_32 (abfd, (bfd_byte *) data + reloc_entry->address);
+ bfd_put_16 (abfd,
+ (bfd_vma) ((extend & 0xf800)
+ | ((final >> 11) & 0x1f)
+ | (final & 0x7e0)),
+ (bfd_byte *) data + reloc_entry->address);
+ bfd_put_16 (abfd,
+ (bfd_vma) ((insn & 0xffe0)
+ | (final & 0x1f)),
+ (bfd_byte *) data + reloc_entry->address + 2);
+
+ return ret;
+}
+\f
+/* A mapping from BFD reloc types to MIPS ELF reloc types. */
+
+struct elf_reloc_map {
+ bfd_reloc_code_real_type bfd_val;
+ enum elf_mips_reloc_type elf_val;
+};
+
+static const struct elf_reloc_map mips_reloc_map[] =
+{
+ { BFD_RELOC_NONE, R_MIPS_NONE },
+ { BFD_RELOC_16, R_MIPS_16 },
+ { BFD_RELOC_32, R_MIPS_32 },
+ /* There is no BFD reloc for R_MIPS_REL32. */
+ { BFD_RELOC_64, R_MIPS_64 },
+ { BFD_RELOC_CTOR, R_MIPS_64 },
+ { BFD_RELOC_16_PCREL, R_MIPS_PC16 },
+ { BFD_RELOC_HI16_S, R_MIPS_HI16 },
+ { BFD_RELOC_LO16, R_MIPS_LO16 },
+ { BFD_RELOC_GPREL16, R_MIPS_GPREL16 },
+ { BFD_RELOC_GPREL32, R_MIPS_GPREL32 },
+ { BFD_RELOC_MIPS_JMP, R_MIPS_26 },
+ { BFD_RELOC_MIPS_LITERAL, R_MIPS_LITERAL },
+ { BFD_RELOC_MIPS_GOT16, R_MIPS_GOT16 },
+ { BFD_RELOC_MIPS_CALL16, R_MIPS_CALL16 },
+ { BFD_RELOC_MIPS_SHIFT5, R_MIPS_SHIFT5 },
+ { BFD_RELOC_MIPS_SHIFT6, R_MIPS_SHIFT6 },
+ { BFD_RELOC_MIPS_GOT_DISP, R_MIPS_GOT_DISP },
+ { BFD_RELOC_MIPS_GOT_PAGE, R_MIPS_GOT_PAGE },
+ { BFD_RELOC_MIPS_GOT_OFST, R_MIPS_GOT_OFST },
+ { BFD_RELOC_MIPS_GOT_HI16, R_MIPS_GOT_HI16 },
+ { BFD_RELOC_MIPS_GOT_LO16, R_MIPS_GOT_LO16 },
+ { BFD_RELOC_MIPS_SUB, R_MIPS_SUB },
+ { BFD_RELOC_MIPS_INSERT_A, R_MIPS_INSERT_A },
+ { BFD_RELOC_MIPS_INSERT_B, R_MIPS_INSERT_B },
+ { BFD_RELOC_MIPS_DELETE, R_MIPS_DELETE },
+ { BFD_RELOC_MIPS_HIGHEST, R_MIPS_HIGHEST },
+ { BFD_RELOC_MIPS_HIGHER, R_MIPS_HIGHER },
+ { BFD_RELOC_MIPS_CALL_HI16, R_MIPS_CALL_HI16 },
+ { BFD_RELOC_MIPS_CALL_LO16, R_MIPS_CALL_LO16 },
+ { BFD_RELOC_MIPS_SCN_DISP, R_MIPS_SCN_DISP },
+ { BFD_RELOC_MIPS_REL16, R_MIPS_REL16 },
+ /* Use of R_MIPS_ADD_IMMEDIATE and R_MIPS_PJUMP is deprecated. */
+ { BFD_RELOC_MIPS_RELGOT, R_MIPS_RELGOT },
+ { BFD_RELOC_MIPS_JALR, R_MIPS_JALR }
+};
+
/* Given a BFD reloc type, return a howto structure. */
static reloc_howto_type *
bfd *abfd ATTRIBUTE_UNUSED;
bfd_reloc_code_real_type code;
{
+ unsigned int i;
/* FIXME: We default to RELA here instead of choosing the right
relocation variant. */
reloc_howto_type *howto_table = mips_elf64_howto_table_rela;
+ for (i = 0; i < sizeof (mips_reloc_map) / sizeof (struct elf_reloc_map);
+ i++)
+ {
+ if (mips_reloc_map[i].bfd_val == code)
+ return &howto_table[(int) mips_reloc_map[i].elf_val];
+ }
+
switch (code)
{
- case BFD_RELOC_NONE:
- return &howto_table[R_MIPS_NONE];
- case BFD_RELOC_16:
- return &howto_table[R_MIPS_16];
- case BFD_RELOC_32:
- return &howto_table[R_MIPS_32];
- case BFD_RELOC_64:
- case BFD_RELOC_CTOR:
- return &howto_table[R_MIPS_64];
- case BFD_RELOC_16_PCREL:
- return &howto_table[R_MIPS_PC16];
- case BFD_RELOC_HI16_S:
- return &howto_table[R_MIPS_HI16];
- case BFD_RELOC_LO16:
- return &howto_table[R_MIPS_LO16];
- case BFD_RELOC_GPREL16:
- return &howto_table[R_MIPS_GPREL16];
- case BFD_RELOC_GPREL32:
- return &howto_table[R_MIPS_GPREL32];
- case BFD_RELOC_MIPS_JMP:
- return &howto_table[R_MIPS_26];
- case BFD_RELOC_MIPS_LITERAL:
- return &howto_table[R_MIPS_LITERAL];
- case BFD_RELOC_MIPS_GOT16:
- return &howto_table[R_MIPS_GOT16];
- case BFD_RELOC_MIPS_CALL16:
- return &howto_table[R_MIPS_CALL16];
- case BFD_RELOC_MIPS_SHIFT5:
- return &howto_table[R_MIPS_SHIFT5];
- case BFD_RELOC_MIPS_SHIFT6:
- return &howto_table[R_MIPS_SHIFT6];
- case BFD_RELOC_MIPS_GOT_DISP:
- return &howto_table[R_MIPS_GOT_DISP];
- case BFD_RELOC_MIPS_GOT_PAGE:
- return &howto_table[R_MIPS_GOT_PAGE];
- case BFD_RELOC_MIPS_GOT_OFST:
- return &howto_table[R_MIPS_GOT_OFST];
- case BFD_RELOC_MIPS_GOT_HI16:
- return &howto_table[R_MIPS_GOT_HI16];
- case BFD_RELOC_MIPS_GOT_LO16:
- return &howto_table[R_MIPS_GOT_LO16];
- case BFD_RELOC_MIPS_SUB:
- return &howto_table[R_MIPS_SUB];
- case BFD_RELOC_MIPS_INSERT_A:
- return &howto_table[R_MIPS_INSERT_A];
- case BFD_RELOC_MIPS_INSERT_B:
- return &howto_table[R_MIPS_INSERT_B];
- case BFD_RELOC_MIPS_DELETE:
- return &howto_table[R_MIPS_DELETE];
- case BFD_RELOC_MIPS_HIGHEST:
- return &howto_table[R_MIPS_HIGHEST];
- case BFD_RELOC_MIPS_HIGHER:
- return &howto_table[R_MIPS_HIGHER];
- case BFD_RELOC_MIPS_CALL_HI16:
- return &howto_table[R_MIPS_CALL_HI16];
- case BFD_RELOC_MIPS_CALL_LO16:
- return &howto_table[R_MIPS_CALL_LO16];
- case BFD_RELOC_MIPS_SCN_DISP:
- return &howto_table[R_MIPS_SCN_DISP];
- case BFD_RELOC_MIPS_REL16:
- return &howto_table[R_MIPS_REL16];
- /* Use of R_MIPS_ADD_IMMEDIATE and R_MIPS_PJUMP is deprecated. */
- case BFD_RELOC_MIPS_RELGOT:
- return &howto_table[R_MIPS_RELGOT];
- case BFD_RELOC_MIPS_JALR:
- return &howto_table[R_MIPS_JALR];
-/*
case BFD_RELOC_MIPS16_JMP:
return &elf_mips16_jump_howto;
case BFD_RELOC_MIPS16_GPREL:
return &elf_mips_gnu_vtinherit_howto;
case BFD_RELOC_VTABLE_ENTRY:
return &elf_mips_gnu_vtentry_howto;
- case BFD_RELOC_PCREL_HI16_S:
- return &elf_mips_gnu_rel_hi16;
- case BFD_RELOC_PCREL_LO16:
- return &elf_mips_gnu_rel_lo16;
- case BFD_RELOC_16_PCREL_S2:
- return &elf_mips_gnu_rel16_s2;
- case BFD_RELOC_64_PCREL:
- return &elf_mips_gnu_pcrel64;
- case BFD_RELOC_32_PCREL:
- return &elf_mips_gnu_pcrel32;
-*/
default:
bfd_set_error (bfd_error_bad_value);
return NULL;
{
switch (r_type)
{
-/*
case R_MIPS16_26:
return &elf_mips16_jump_howto;
- break;
case R_MIPS16_GPREL:
return &elf_mips16_gprel_howto;
- break;
case R_MIPS_GNU_VTINHERIT:
return &elf_mips_gnu_vtinherit_howto;
- break;
case R_MIPS_GNU_VTENTRY:
return &elf_mips_gnu_vtentry_howto;
- break;
- case R_MIPS_GNU_REL_HI16:
- return &elf_mips_gnu_rel_hi16;
- break;
- case R_MIPS_GNU_REL_LO16:
- return &elf_mips_gnu_rel_lo16;
- break;
- case R_MIPS_GNU_REL16_S2:
- return &elf_mips_gnu_rel16_s2;
- break;
- case R_MIPS_PC64:
- return &elf_mips_gnu_pcrel64;
- break;
- case R_MIPS_PC32:
- return &elf_mips_gnu_pcrel32;
- break;
-*/
-
default:
BFD_ASSERT (r_type < (unsigned int) R_MIPS_max);
if (rela_p)
/* Irix 6 is broken. Object file symbol tables are not always
sorted correctly such that local symbols precede global symbols,
and the sh_info field in the symbol table is not always right. */
- if (SGI_COMPAT(abfd))
+ if (elf64_mips_irix_compat (abfd) != ict_none)
elf_bad_symtab (abfd) = true;
mach = _bfd_elf_mips_mach (elf_elfheader (abfd)->e_flags);
elf64_mips_irix_compat (abfd)
bfd *abfd;
{
- if ((abfd->xvec == &bfd_elf64_tradbigmips_vec)
- || (abfd->xvec == &bfd_elf64_tradlittlemips_vec))
- return ict_none;
- else
+ if ((abfd->xvec == &bfd_elf64_bigmips_vec)
+ || (abfd->xvec == &bfd_elf64_littlemips_vec))
return ict_irix6;
+ else
+ return ict_none;
}
\f
/* ECOFF swapping routines. These are used when dealing with the
#define ELF_ARCH bfd_arch_mips
#define ELF_MACHINE_CODE EM_MIPS
+/* The SVR4 MIPS ABI says that this should be 0x10000, but Irix 5 uses
+ a value of 0x1000, and we are compatible.
+ FIXME: How does this affect NewABI? */
#define ELF_MAXPAGESIZE 0x1000
#define elf_backend_collect true
#define elf_backend_may_use_rela_p 1
#define elf_backend_default_use_rela_p 1
+#define elf_backend_write_section _bfd_mips_elf_write_section
+
/* We don't set bfd_elf64_bfd_is_local_label_name because the 32-bit
MIPS-specific function only applies to IRIX5, which had no 64-bit
ABI. */
projects / deliverable / binutils-gdb.git / blobdiff