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authorThiemo Seufer <ths@networkno.de>2002-07-25 15:35:14 +0000
committerThiemo Seufer <ths@networkno.de>2002-07-25 15:35:14 +0000
commita4382ec6f5bfdd53dae4b99d05dacba4ade4c8ce (patch)
treef844821b1e30b155e2032509b606c44b1545d2c6 /bfd/elf64-mips.c
parent06afebeb2fec85c7da8ec2e507e2e15ec361effe (diff)
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* elf64-mips.c: Update TODO comment.
(mips_elf64_higher_reloc,mips_elf64_highest_reloc, mips_elf64_gprel16_reloca): Remove prototypes. (mips16_jump_reloc,mips16_gprel_reloc): Add functions. (UNUSED_RELOC): Replace by EMPTY_RELOC. (mips_elf64_howto_table_rel): Use special R_MIPS_HI16 handling. Remove wrong comments. Remove disfunctional support of R_MIPS_HIGHER and R_MIPS_HIGHEST. (mips_elf64_howto_table_rela): Fix handling of R_MIPS_GPREL16 and R_MIPS_GOT16. Remove wrong comments. (elf_mips16_jump_howto,elf_mips16_gprel_howto, elf_mips_gnu_vtinherit_howto,elf_mips_gnu_vtentry_howto): New, code from elf32-mips.c. (mips_elf64_hi16_reloc): Fix formatting. (mips_elf64_higher_reloc,mips_elf64_highest_reloc): Remove. (mips_elf64_got16_reloc): Fix formatting. Remove superfluous code. Better comment. Fall back to R_MIPS_GOT_DISP instead of abort(). (mips_elf64_gprel16_reloc): Make static. Add check for partial_inplace. (mips_elf64_gprel16_reloca): Remove. (mips_elf64_literal_reloc): New function. (mips_elf64_gprel32_reloc): Fix formatting. (mips_elf64_shift6_reloc): Fix comment. Make static. (mips16_jump_reloc,mips16_gprel_reloc): New functions, code from elf32-mips.c. (elf_reloc_map,mips_reloc_map): New mapping table, similiar as in elf32-mips.c (bfd_elf64_bfd_reloc_type_lookup): Use the mapping table. Enable GNU specific relocations. (mips_elf64_rtype_to_howto): Enable GNU specific relocations. (mips_elf64_object_p): Invert logic to check for SGI-ish ABI. (ELF_MAXPAGESIZE): Add comment.
Diffstat (limited to 'bfd/elf64-mips.c')
-rw-r--r--bfd/elf64-mips.c659
1 files changed, 306 insertions, 353 deletions
diff --git a/bfd/elf64-mips.c b/bfd/elf64-mips.c
index 6fed5c1..00c312c 100644
--- a/bfd/elf64-mips.c
+++ b/bfd/elf64-mips.c
@@ -34,8 +34,7 @@ Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */
. 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.
@@ -102,14 +101,8 @@ static void mips_elf64_write_rela
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
@@ -118,22 +111,18 @@ static bfd_reloc_status_type mips_elf64_shift6_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. */
@@ -144,8 +133,6 @@ static bfd_size_type prev_reloc_address = 0;
/* 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. */
@@ -226,6 +213,9 @@ static reloc_howto_type mips_elf64_howto_table_rel[] =
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 */
@@ -234,7 +224,7 @@ static reloc_howto_type mips_elf64_howto_table_rel[] =
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 */
@@ -317,7 +307,6 @@ static reloc_howto_type mips_elf64_howto_table_rel[] =
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) */
@@ -347,9 +336,9 @@ static reloc_howto_type mips_elf64_howto_table_rel[] =
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 */
@@ -397,7 +386,6 @@ static reloc_howto_type mips_elf64_howto_table_rel[] =
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) */
@@ -413,7 +401,6 @@ static reloc_howto_type mips_elf64_howto_table_rel[] =
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) */
@@ -429,7 +416,6 @@ static reloc_howto_type mips_elf64_howto_table_rel[] =
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) */
@@ -445,7 +431,6 @@ static reloc_howto_type mips_elf64_howto_table_rel[] =
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) */
@@ -461,7 +446,6 @@ static reloc_howto_type mips_elf64_howto_table_rel[] =
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) */
@@ -477,7 +461,6 @@ static reloc_howto_type mips_elf64_howto_table_rel[] =
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) */
@@ -541,38 +524,16 @@ static reloc_howto_type mips_elf64_howto_table_rel[] =
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) */
@@ -588,7 +549,6 @@ static reloc_howto_type mips_elf64_howto_table_rel[] =
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) */
@@ -604,7 +564,6 @@ static reloc_howto_type mips_elf64_howto_table_rel[] =
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) */
@@ -752,7 +711,6 @@ static reloc_howto_type mips_elf64_howto_table_rela[] =
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 */
@@ -791,7 +749,7 @@ static reloc_howto_type mips_elf64_howto_table_rela[] =
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 */
@@ -814,7 +772,6 @@ static reloc_howto_type mips_elf64_howto_table_rela[] =
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) */
@@ -822,7 +779,7 @@ static reloc_howto_type mips_elf64_howto_table_rela[] =
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 */
@@ -845,7 +802,6 @@ static reloc_howto_type mips_elf64_howto_table_rela[] =
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) */
@@ -875,9 +831,9 @@ static reloc_howto_type mips_elf64_howto_table_rela[] =
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 */
@@ -925,7 +881,6 @@ static reloc_howto_type mips_elf64_howto_table_rela[] =
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) */
@@ -941,7 +896,6 @@ static reloc_howto_type mips_elf64_howto_table_rela[] =
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) */
@@ -957,7 +911,6 @@ static reloc_howto_type mips_elf64_howto_table_rela[] =
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) */
@@ -973,7 +926,6 @@ static reloc_howto_type mips_elf64_howto_table_rela[] =
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) */
@@ -989,7 +941,6 @@ static reloc_howto_type mips_elf64_howto_table_rela[] =
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) */
@@ -1005,7 +956,6 @@ static reloc_howto_type mips_elf64_howto_table_rela[] =
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) */
@@ -1100,7 +1050,6 @@ static reloc_howto_type mips_elf64_howto_table_rela[] =
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) */
@@ -1116,7 +1065,6 @@ static reloc_howto_type mips_elf64_howto_table_rela[] =
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) */
@@ -1132,7 +1080,6 @@ static reloc_howto_type mips_elf64_howto_table_rela[] =
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) */
@@ -1197,6 +1144,73 @@ static reloc_howto_type mips_elf64_howto_table_rela[] =
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 */
/* Swap in a MIPS 64-bit Rel reloc. */
@@ -1365,14 +1379,9 @@ mips_elf64_be_swap_reloca_out (abfd, src, dst)
/* 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;
@@ -1398,78 +1407,6 @@ mips_elf64_hi16_reloc (abfd,
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
@@ -1484,14 +1421,9 @@ mips_elf64_highest_reloc (abfd,
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;
@@ -1500,24 +1432,17 @@ mips_elf64_got16_reloc (abfd,
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
@@ -1617,7 +1542,7 @@ mips_elf64_final_gp (output_bfd, symbol, relocateable, error_message, 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;
@@ -1638,7 +1563,8 @@ mips_elf64_gprel16_reloc (abfd, reloc_entry, symbol, data, input_section,
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;
@@ -1662,37 +1588,35 @@ mips_elf64_gprel16_reloc (abfd, reloc_entry, symbol, data, input_section,
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
@@ -1701,25 +1625,21 @@ mips_elf64_gprel16_reloca (abfd, reloc_entry, symbol, data, input_section,
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;
@@ -1729,42 +1649,6 @@ mips_elf64_literal_reloc (abfd, reloc_entry, symbol, data, 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;
bfd_vma gp;
@@ -1838,9 +1722,9 @@ mips_elf64_gprel32_reloc (abfd,
}
/* 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;
@@ -1868,6 +1752,164 @@ mips_elf64_shift6_reloc (abfd, reloc_entry, symbol, data, input_section,
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;
+}
+
+/* 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 *
@@ -1875,79 +1917,20 @@ bfd_elf64_bfd_reloc_type_lookup (abfd, code)
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:
@@ -1956,17 +1939,6 @@ bfd_elf64_bfd_reloc_type_lookup (abfd, code)
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;
@@ -1982,36 +1954,14 @@ mips_elf64_rtype_to_howto (r_type, rela_p)
{
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)
@@ -2579,7 +2529,7 @@ mips_elf64_object_p (abfd)
/* 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);
@@ -2593,11 +2543,11 @@ static irix_compat_t
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;
}
/* ECOFF swapping routines. These are used when dealing with the
@@ -2681,6 +2631,9 @@ const struct elf_size_info mips_elf64_size_info =
#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