/* MIPS-specific support for 32-bit ELF
- Copyright 1993, 94, 95, 96, 97, 98, 1999 Free Software Foundation, Inc.
+ Copyright 1993, 94, 95, 96, 97, 98, 99, 2000
+ Free Software Foundation, Inc.
Most of the information added by Ian Lance Taylor, Cygnus Support,
<ian@cygnus.com>.
+ N32/64 ABI support added by Mark Mitchell, CodeSourcery, LLC.
+ <mark@codesourcery.com>
+ Traditional MIPS targets support added by Koundinya.K, Dansk Data
+ Elektronik & Operations Research Group. <kk@ddeorg.soft.net>
This file is part of BFD, the Binary File Descriptor library.
#include "coff/internal.h"
#include "coff/ecoff.h"
#include "coff/mips.h"
-#define ECOFF_32
+#define ECOFF_SIGNED_32
#include "ecoffswap.h"
+/* This structure is used to hold .got information when linking. It
+ is stored in the tdata field of the bfd_elf_section_data structure. */
+
+struct mips_got_info {
+ /* The global symbol in the GOT with the lowest index in the dynamic
+ symbol table. */
+ struct elf_link_hash_entry *global_gotsym;
+ /* The number of global .got entries. */
+ unsigned int global_gotno;
+ /* The number of local .got entries. */
+ unsigned int local_gotno;
+ /* The number of local .got entries we have used. */
+ unsigned int assigned_gotno;
+};
+
+/* The MIPS ELF linker needs additional information for each symbol in
+ the global hash table. */
+
+struct mips_elf_link_hash_entry {
+ struct elf_link_hash_entry root;
+
+ /* External symbol information. */
+ EXTR esym;
+
+ /* Number of R_MIPS_32, R_MIPS_REL32, or R_MIPS_64 relocs against
+ this symbol. */
+ unsigned int possibly_dynamic_relocs;
+
+ /* The index of the first dynamic relocation (in the .rel.dyn
+ section) against this symbol. */
+ unsigned int min_dyn_reloc_index;
+
+ /* If there is a stub that 32 bit functions should use to call this
+ 16 bit function, this points to the section containing the stub. */
+ asection *fn_stub;
+
+ /* Whether we need the fn_stub; this is set if this symbol appears
+ in any relocs other than a 16 bit call. */
+ boolean need_fn_stub;
+
+ /* If there is a stub that 16 bit functions should use to call this
+ 32 bit function, this points to the section containing the stub. */
+ asection *call_stub;
+
+ /* This is like the call_stub field, but it is used if the function
+ being called returns a floating point value. */
+ asection *call_fp_stub;
+};
+
static bfd_reloc_status_type mips32_64bit_reloc
PARAMS ((bfd *, arelent *, asymbol *, PTR, asection *, bfd *, char **));
static reloc_howto_type *bfd_elf32_bfd_reloc_type_lookup
PARAMS ((bfd *, bfd_reloc_code_real_type));
+static reloc_howto_type *mips_rtype_to_howto
+ PARAMS ((unsigned int));
static void mips_info_to_howto_rel
PARAMS ((bfd *, arelent *, Elf32_Internal_Rel *));
static void mips_info_to_howto_rela
PARAMS ((bfd *, const Elf32_External_gptab *, Elf32_gptab *));
static void bfd_mips_elf32_swap_gptab_out
PARAMS ((bfd *, const Elf32_gptab *, Elf32_External_gptab *));
+#if 0
+static void bfd_mips_elf_swap_msym_in
+ PARAMS ((bfd *, const Elf32_External_Msym *, Elf32_Internal_Msym *));
+#endif
+static void bfd_mips_elf_swap_msym_out
+ PARAMS ((bfd *, const Elf32_Internal_Msym *, Elf32_External_Msym *));
static boolean mips_elf_sym_is_global PARAMS ((bfd *, asymbol *));
-static boolean mips_elf32_object_p PARAMS ((bfd *));
static boolean mips_elf_create_procedure_table
PARAMS ((PTR, bfd *, struct bfd_link_info *, asection *,
struct ecoff_debug_info *));
-static int mips_elf_additional_program_headers PARAMS ((bfd *));
-static boolean mips_elf_modify_segment_map PARAMS ((bfd *));
static INLINE int elf_mips_isa PARAMS ((flagword));
static INLINE int elf_mips_mach PARAMS ((flagword));
-static INLINE char* elf_mips_abi_name PARAMS ((flagword));
-static boolean mips_elf32_section_from_shdr
- PARAMS ((bfd *, Elf32_Internal_Shdr *, char *));
-static boolean mips_elf32_section_processing
- PARAMS ((bfd *, Elf32_Internal_Shdr *));
+static INLINE char* elf_mips_abi_name PARAMS ((bfd *));
static boolean mips_elf_is_local_label_name
PARAMS ((bfd *, const char *));
static struct bfd_hash_entry *mips_elf_link_hash_newfunc
PARAMS ((struct bfd_hash_entry *, struct bfd_hash_table *, const char *));
-static struct bfd_link_hash_table *mips_elf_link_hash_table_create
- PARAMS ((bfd *));
static int gptab_compare PARAMS ((const void *, const void *));
-static boolean mips_elf_final_link
- PARAMS ((bfd *, struct bfd_link_info *));
-static void mips_elf_relocate_hi16
- PARAMS ((bfd *, Elf_Internal_Rela *, Elf_Internal_Rela *, bfd_byte *,
- bfd_vma));
-static boolean mips_elf_relocate_got_local
- PARAMS ((bfd *, bfd *, asection *, Elf_Internal_Rela *,
- Elf_Internal_Rela *, bfd_byte *, bfd_vma));
-static void mips_elf_relocate_global_got
- PARAMS ((bfd *, Elf_Internal_Rela *, bfd_byte *, bfd_vma));
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_elf_adjust_dynindx
- PARAMS ((struct elf_link_hash_entry *, PTR));
-static boolean mips_elf_relocate_section
- PARAMS ((bfd *, struct bfd_link_info *, bfd *, asection *, bfd_byte *,
- Elf_Internal_Rela *, Elf_Internal_Sym *, asection **));
-static boolean mips_elf_link_output_symbol_hook
- PARAMS ((bfd *, struct bfd_link_info *, const char *, Elf_Internal_Sym *,
- asection *));
-static boolean mips_elf_create_dynamic_sections
- PARAMS ((bfd *, struct bfd_link_info *));
static boolean mips_elf_create_compact_rel_section
PARAMS ((bfd *, struct bfd_link_info *));
static boolean mips_elf_create_got_section
PARAMS ((bfd *, struct bfd_link_info *));
-static boolean mips_elf_check_relocs
- PARAMS ((bfd *, struct bfd_link_info *, asection *,
- const Elf_Internal_Rela *));
-static boolean mips_elf_adjust_dynamic_symbol
- PARAMS ((struct bfd_link_info *, struct elf_link_hash_entry *));
-static boolean mips_elf_always_size_sections
- PARAMS ((bfd *, struct bfd_link_info *));
-static boolean mips_elf_size_dynamic_sections
- PARAMS ((bfd *, struct bfd_link_info *));
-static boolean mips_elf_finish_dynamic_symbol
- PARAMS ((bfd *, struct bfd_link_info *, struct elf_link_hash_entry *,
- Elf_Internal_Sym *));
-static boolean mips_elf_finish_dynamic_sections
- PARAMS ((bfd *, struct bfd_link_info *));
-static boolean mips_elf_add_symbol_hook
- PARAMS ((bfd *, struct bfd_link_info *, const Elf_Internal_Sym *,
- const char **, flagword *, asection **, bfd_vma *));
static bfd_reloc_status_type mips_elf_final_gp
PARAMS ((bfd *, asymbol *, boolean, char **, bfd_vma *));
static bfd_byte *elf32_mips_get_relocated_section_contents
PARAMS ((bfd *, struct bfd_link_info *, struct bfd_link_order *,
bfd_byte *, boolean, asymbol **));
-
-/* This is true for Irix 5 executables, false for normal MIPS ELF ABI
- executables. FIXME: At the moment, we default to always generating
- Irix 5 executables. */
-
-#define SGI_COMPAT(abfd) (1)
-
-/* This structure is used to hold .got information when linking. It
- is stored in the tdata field of the bfd_elf_section_data structure. */
-
-struct mips_got_info
-{
- /* The symbol index of the first global .got symbol. */
- unsigned long global_gotsym;
- /* The number of local .got entries. */
- unsigned int local_gotno;
- /* The number of local .got entries we have used. */
- unsigned int assigned_gotno;
-};
+static asection *mips_elf_create_msym_section
+ PARAMS ((bfd *));
+static void mips_elf_irix6_finish_dynamic_symbol
+ PARAMS ((bfd *, const char *, Elf_Internal_Sym *));
+static bfd_vma mips_elf_sign_extend PARAMS ((bfd_vma, int));
+static boolean mips_elf_overflow_p PARAMS ((bfd_vma, int));
+static bfd_vma mips_elf_high PARAMS ((bfd_vma));
+static bfd_vma mips_elf_higher PARAMS ((bfd_vma));
+static bfd_vma mips_elf_highest PARAMS ((bfd_vma));
+static bfd_vma mips_elf_global_got_index
+ PARAMS ((bfd *, struct elf_link_hash_entry *));
+static bfd_vma mips_elf_local_got_index
+ PARAMS ((bfd *, struct bfd_link_info *, bfd_vma));
+static bfd_vma mips_elf_got_offset_from_index
+ PARAMS ((bfd *, bfd *, bfd_vma));
+static boolean mips_elf_record_global_got_symbol
+ PARAMS ((struct elf_link_hash_entry *, struct bfd_link_info *,
+ struct mips_got_info *));
+static bfd_vma mips_elf_got_page
+ PARAMS ((bfd *, struct bfd_link_info *, bfd_vma, bfd_vma *));
+static const Elf_Internal_Rela *mips_elf_next_relocation
+ PARAMS ((unsigned int, const Elf_Internal_Rela *,
+ const Elf_Internal_Rela *));
+static bfd_reloc_status_type mips_elf_calculate_relocation
+ PARAMS ((bfd *, bfd *, asection *, struct bfd_link_info *,
+ const Elf_Internal_Rela *, bfd_vma, reloc_howto_type *,
+ Elf_Internal_Sym *, asection **, bfd_vma *, const char **,
+ boolean *));
+static bfd_vma mips_elf_obtain_contents
+ PARAMS ((reloc_howto_type *, const Elf_Internal_Rela *, bfd *, bfd_byte *));
+static boolean mips_elf_perform_relocation
+ PARAMS ((struct bfd_link_info *, reloc_howto_type *,
+ const Elf_Internal_Rela *, bfd_vma,
+ bfd *, asection *, bfd_byte *, boolean));
+static boolean mips_elf_assign_gp PARAMS ((bfd *, bfd_vma *));
+static boolean mips_elf_sort_hash_table_f
+ PARAMS ((struct mips_elf_link_hash_entry *, PTR));
+static boolean mips_elf_sort_hash_table
+ PARAMS ((struct bfd_link_info *, unsigned long));
+static asection * mips_elf_got_section PARAMS ((bfd *));
+static struct mips_got_info *mips_elf_got_info
+ PARAMS ((bfd *, asection **));
+static boolean mips_elf_local_relocation_p
+ PARAMS ((bfd *, const Elf_Internal_Rela *, asection **, boolean));
+static bfd_vma mips_elf_create_local_got_entry
+ PARAMS ((bfd *, struct mips_got_info *, asection *, bfd_vma));
+static bfd_vma mips_elf_got16_entry
+ PARAMS ((bfd *, struct bfd_link_info *, bfd_vma, boolean));
+static boolean mips_elf_create_dynamic_relocation
+ PARAMS ((bfd *, struct bfd_link_info *, const Elf_Internal_Rela *,
+ struct mips_elf_link_hash_entry *, asection *,
+ bfd_vma, bfd_vma *, asection *, boolean local_p));
+static void mips_elf_allocate_dynamic_relocations
+ PARAMS ((bfd *, unsigned int));
+static boolean mips_elf_stub_section_p
+ PARAMS ((bfd *, asection *));
+static int sort_dynamic_relocs
+ PARAMS ((const void *, const void *));
+
+extern const bfd_target bfd_elf32_tradbigmips_vec;
+
+/* The level of IRIX compatibility we're striving for. */
+
+typedef enum {
+ ict_none,
+ ict_irix5,
+ ict_irix6
+} irix_compat_t;
+
+/* This will be used when we sort the dynamic relocation records. */
+static bfd *reldyn_sorting_bfd;
+
+/* Nonzero if ABFD is using the N32 ABI. */
+
+#define ABI_N32_P(abfd) \
+ ((elf_elfheader (abfd)->e_flags & EF_MIPS_ABI2) != 0)
+
+/* Nonzero if ABFD is using the 64-bit ABI. FIXME: This is never
+ true, yet. */
+#define ABI_64_P(abfd) \
+ ((elf_elfheader (abfd)->e_ident[EI_CLASS] == ELFCLASS64) != 0)
+
+/* Depending on the target vector we generate some version of Irix
+ executables or "normal" MIPS ELF ABI executables. */
+
+#define IRIX_COMPAT(abfd) \
+ (abfd->xvec == &bfd_elf32_tradbigmips_vec ? ict_none : \
+ ((ABI_N32_P (abfd) || ABI_64_P (abfd)) ? ict_irix6 : ict_irix5))
+
+/* Whether we are trying to be compatible with IRIX at all. */
+
+#define SGI_COMPAT(abfd) \
+ (IRIX_COMPAT (abfd) != ict_none)
+
+/* The name of the msym section. */
+#define MIPS_ELF_MSYM_SECTION_NAME(abfd) ".msym"
+
+/* The name of the srdata section. */
+#define MIPS_ELF_SRDATA_SECTION_NAME(abfd) ".srdata"
+
+/* The name of the options section. */
+#define MIPS_ELF_OPTIONS_SECTION_NAME(abfd) \
+ (IRIX_COMPAT (abfd) == ict_irix6 ? ".MIPS.options" : ".options")
+
+/* The name of the stub section. */
+#define MIPS_ELF_STUB_SECTION_NAME(abfd) \
+ (IRIX_COMPAT (abfd) == ict_irix6 ? ".MIPS.stubs" : ".stub")
+
+/* The name of the dynamic relocation section. */
+#define MIPS_ELF_REL_DYN_SECTION_NAME(abfd) ".rel.dyn"
+
+/* The size of an external REL relocation. */
+#define MIPS_ELF_REL_SIZE(abfd) \
+ (get_elf_backend_data (abfd)->s->sizeof_rel)
+
+/* The size of an external dynamic table entry. */
+#define MIPS_ELF_DYN_SIZE(abfd) \
+ (get_elf_backend_data (abfd)->s->sizeof_dyn)
+
+/* The size of a GOT entry. */
+#define MIPS_ELF_GOT_SIZE(abfd) \
+ (get_elf_backend_data (abfd)->s->arch_size / 8)
+
+/* The size of a symbol-table entry. */
+#define MIPS_ELF_SYM_SIZE(abfd) \
+ (get_elf_backend_data (abfd)->s->sizeof_sym)
+
+/* The default alignment for sections, as a power of two. */
+#define MIPS_ELF_LOG_FILE_ALIGN(abfd) \
+ (get_elf_backend_data (abfd)->s->file_align == 8 ? 3 : 2)
+
+/* Get word-sized data. */
+#define MIPS_ELF_GET_WORD(abfd, ptr) \
+ (ABI_64_P (abfd) ? bfd_get_64 (abfd, ptr) : bfd_get_32 (abfd, ptr))
+
+/* Put out word-sized data. */
+#define MIPS_ELF_PUT_WORD(abfd, val, ptr) \
+ (ABI_64_P (abfd) \
+ ? bfd_put_64 (abfd, val, ptr) \
+ : bfd_put_32 (abfd, val, ptr))
+
+/* Add a dynamic symbol table-entry. */
+#ifdef BFD64
+#define MIPS_ELF_ADD_DYNAMIC_ENTRY(info, tag, val) \
+ (ABI_64_P (elf_hash_table (info)->dynobj) \
+ ? bfd_elf64_add_dynamic_entry (info, tag, val) \
+ : bfd_elf32_add_dynamic_entry (info, tag, val))
+#else
+#define MIPS_ELF_ADD_DYNAMIC_ENTRY(info, tag, val) \
+ (ABI_64_P (elf_hash_table (info)->dynobj) \
+ ? (abort (), false) \
+ : bfd_elf32_add_dynamic_entry (info, tag, val))
+#endif
/* The number of local .got entries we reserve. */
#define MIPS_RESERVED_GOTNO (2)
/* Instructions which appear in a stub. For some reason the stub is
slightly different on an SGI system. */
#define ELF_MIPS_GP_OFFSET(abfd) (SGI_COMPAT (abfd) ? 0x7ff0 : 0x8000)
-#define STUB_LW(abfd) \
- (SGI_COMPAT (abfd) \
- ? 0x8f998010 /* lw t9,0x8010(gp) */ \
- : 0x8f998000) /* lw t9,0x8000(gp) */
-#define STUB_MOVE 0x03e07825 /* move t7,ra */
-#define STUB_JALR 0x0320f809 /* jal t9 */
-#define STUB_LI16 0x34180000 /* ori t8,zero,0 */
+#define STUB_LW(abfd) \
+ (SGI_COMPAT (abfd) \
+ ? (ABI_64_P (abfd) \
+ ? 0xdf998010 /* ld t9,0x8010(gp) */ \
+ : 0x8f998010) /* lw t9,0x8010(gp) */ \
+ : 0x8f998010) /* lw t9,0x8000(gp) */
+#define STUB_MOVE(abfd) \
+ (SGI_COMPAT (abfd) ? 0x03e07825 : 0x03e07821) /* move t7,ra */
+#define STUB_JALR 0x0320f809 /* jal t9 */
+#define STUB_LI16(abfd) \
+ (SGI_COMPAT (abfd) ? 0x34180000 : 0x24180000) /* ori t8,zero,0 */
#define MIPS_FUNCTION_STUB_SIZE (16)
#if 0
/* Names of sections which appear in the .dynsym section in an Irix 5
executable. */
-static const char * const mips_elf_dynsym_sec_names[] =
-{
+static const char * const mips_elf_dynsym_sec_names[] = {
".text",
".init",
".fini",
/* The names of the runtime procedure table symbols used on Irix 5. */
-static const char * const mips_elf_dynsym_rtproc_names[] =
-{
+static const char * const mips_elf_dynsym_rtproc_names[] = {
"_procedure_table",
"_procedure_string_table",
"_procedure_table_size",
/* These structures are used to generate the .compact_rel section on
Irix 5. */
-typedef struct
-{
+typedef struct {
unsigned long id1; /* Always one? */
unsigned long num; /* Number of compact relocation entries. */
unsigned long id2; /* Always two? */
unsigned long reserved1; /* Zero? */
} Elf32_compact_rel;
-typedef struct
-{
+typedef struct {
bfd_byte id1[4];
bfd_byte num[4];
bfd_byte id2[4];
bfd_byte reserved1[4];
} Elf32_External_compact_rel;
-typedef struct
-{
+typedef struct {
unsigned int ctype : 1; /* 1: long 0: short format. See below. */
- unsigned int rtype : 4; /* Relocation types. See below. */
+ unsigned int rtype : 4; /* Relocation types. See below. */
unsigned int dist2to : 8;
unsigned int relvaddr : 19; /* (VADDR - vaddr of the previous entry)/ 4 */
unsigned long konst; /* KONST field. See below. */
unsigned long vaddr; /* VADDR to be relocated. */
} Elf32_crinfo;
-typedef struct
-{
+typedef struct {
unsigned int ctype : 1; /* 1: long 0: short format. See below. */
- unsigned int rtype : 4; /* Relocation types. See below. */
+ unsigned int rtype : 4; /* Relocation types. See below. */
unsigned int dist2to : 8;
unsigned int relvaddr : 19; /* (VADDR - vaddr of the previous entry)/ 4 */
unsigned long konst; /* KONST field. See below. */
} Elf32_crinfo2;
-typedef struct
-{
+typedef struct {
bfd_byte info[4];
bfd_byte konst[4];
bfd_byte vaddr[4];
} Elf32_External_crinfo;
-typedef struct
-{
+typedef struct {
bfd_byte info[4];
bfd_byte konst[4];
} Elf32_External_crinfo2;
from smaller values. Start with zero, widen, *then* decrement. */
#define MINUS_ONE (((bfd_vma)0) - 1)
-static reloc_howto_type elf_mips_howto_table[] =
-{
+static reloc_howto_type elf_mips_howto_table[] = {
/* No relocation. */
HOWTO (R_MIPS_NONE, /* type */
0, /* rightshift */
_bfd_mips_elf_got16_reloc, /* special_function */
"R_MIPS_GOT16", /* name */
false, /* partial_inplace */
- 0, /* src_mask */
+ 0xffff, /* src_mask */
0xffff, /* dst_mask */
false), /* pcrel_offset */
true, /* partial_inplace */
0xffff, /* src_mask */
0xffff, /* dst_mask */
- false), /* pcrel_offset */
+ 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) */
bfd_elf_generic_reloc, /* special_function */
"R_MIPS_CALL16", /* name */
false, /* partial_inplace */
- 0, /* src_mask */
+ 0xffff, /* src_mask */
0xffff, /* dst_mask */
false), /* pcrel_offset */
/* The remaining relocs are defined on Irix 5, although they are
not defined by the ABI. */
- { 13 },
- { 14 },
- { 15 },
+ EMPTY_HOWTO (13),
+ EMPTY_HOWTO (14),
+ EMPTY_HOWTO (15),
/* A 5 bit shift field. */
HOWTO (R_MIPS_SHIFT5, /* type */
0x000007c4, /* dst_mask */
false), /* pcrel_offset */
- /* A 64 bit relocation. This is used in 32 bit ELF when addresses
- are 64 bits long; the upper 32 bits are simply a sign extension.
- The fields of the howto should be the same as for R_MIPS_32,
- other than the type, name, and special_function. */
+ /* A 64 bit relocation. */
HOWTO (R_MIPS_64, /* type */
0, /* rightshift */
- 2, /* size (0 = byte, 1 = short, 2 = long) */
- 32, /* bitsize */
+ 4, /* size (0 = byte, 1 = short, 2 = long) */
+ 64, /* bitsize */
false, /* pc_relative */
0, /* bitpos */
complain_overflow_bitfield, /* complain_on_overflow */
mips32_64bit_reloc, /* special_function */
"R_MIPS_64", /* name */
true, /* partial_inplace */
- 0xffffffff, /* src_mask */
- 0xffffffff, /* dst_mask */
+ MINUS_ONE, /* src_mask */
+ MINUS_ONE, /* dst_mask */
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 subtraction. Used in the N32 ABI. */
- /* FIXME: Not handled correctly. */
HOWTO (R_MIPS_SUB, /* type */
0, /* rightshift */
4, /* size (0 = byte, 1 = short, 2 = long) */
false), /* pcrel_offset */
/* Used to cause the linker to insert and delete instructions? */
- { R_MIPS_INSERT_A },
- { R_MIPS_INSERT_B },
- { R_MIPS_DELETE },
+ EMPTY_HOWTO (R_MIPS_INSERT_A),
+ EMPTY_HOWTO (R_MIPS_INSERT_B),
+ EMPTY_HOWTO (R_MIPS_DELETE),
+
+ /* 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 */
+ bfd_elf_generic_reloc, /* special_function */
+ "R_MIPS_HIGHER", /* name */
+ true, /* partial_inplace */
+ 0, /* src_mask */
+ 0xffff, /* dst_mask */
+ false), /* pcrel_offset */
- /* Get the higher values of a 64 bit addend. Presumably not used in
- 32 bit ELF. */
- { R_MIPS_HIGHER },
- { R_MIPS_HIGHEST },
+ /* 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 */
+ bfd_elf_generic_reloc, /* special_function */
+ "R_MIPS_HIGHEST", /* name */
+ true, /* partial_inplace */
+ 0, /* src_mask */
+ 0xffff, /* dst_mask */
+ 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) */
0x0000ffff, /* dst_mask */
false), /* pcrel_offset */
- { R_MIPS_SCN_DISP },
- { R_MIPS_REL16 },
- { R_MIPS_ADD_IMMEDIATE },
- { R_MIPS_PJUMP },
- { R_MIPS_RELGOT }
+ /* Section displacement. */
+ HOWTO (R_MIPS_SCN_DISP, /* type */
+ 0, /* rightshift */
+ 2, /* size (0 = byte, 1 = short, 2 = long) */
+ 32, /* bitsize */
+ false, /* pc_relative */
+ 0, /* bitpos */
+ complain_overflow_dont, /* complain_on_overflow */
+ bfd_elf_generic_reloc, /* special_function */
+ "R_MIPS_SCN_DISP", /* name */
+ false, /* partial_inplace */
+ 0xffffffff, /* src_mask */
+ 0xffffffff, /* dst_mask */
+ false), /* pcrel_offset */
+
+ EMPTY_HOWTO (R_MIPS_REL16),
+ EMPTY_HOWTO (R_MIPS_ADD_IMMEDIATE),
+ EMPTY_HOWTO (R_MIPS_PJUMP),
+ EMPTY_HOWTO (R_MIPS_RELGOT),
+
+ /* Protected jump conversion. This is an optimization hint. No
+ relocation is required for correctness. */
+ HOWTO (R_MIPS_JALR, /* type */
+ 0, /* rightshift */
+ 0, /* size (0 = byte, 1 = short, 2 = long) */
+ 0, /* bitsize */
+ false, /* pc_relative */
+ 0, /* bitpos */
+ complain_overflow_dont, /* complain_on_overflow */
+ bfd_elf_generic_reloc, /* special_function */
+ "R_MIPS_JALR", /* name */
+ false, /* partial_inplace */
+ 0x00000000, /* src_mask */
+ 0x00000000, /* dst_mask */
+ false), /* pcrel_offset */
};
/* The reloc used for BFD_RELOC_CTOR when doing a 64 bit link. This
0x3ffffff, /* dst_mask */
false); /* pcrel_offset */
-/* The reloc used for the mips16 gprel instruction. The src_mask and
- dsk_mask for this howto do not reflect the actual instruction, in
- which the value is not contiguous; the masks are for the
- convenience of the relocate_section routine. */
+/* The reloc used for the mips16 gprel instruction. */
static reloc_howto_type elf_mips16_gprel_howto =
HOWTO (R_MIPS16_GPREL, /* type */
0, /* rightshift */
mips16_gprel_reloc, /* special_function */
"R_MIPS16_GPREL", /* name */
true, /* partial_inplace */
+ 0x07ff001f, /* src_mask */
+ 0x07ff001f, /* dst_mask */
+ false); /* pcrel_offset */
+
+/* GNU extensions for embedded-pic. */
+/* High 16 bits of symbol value, pc-relative. */
+static reloc_howto_type elf_mips_gnu_rel_hi16 =
+ HOWTO (R_MIPS_GNU_REL_HI16, /* type */
+ 0, /* rightshift */
+ 2, /* size (0 = byte, 1 = short, 2 = long) */
+ 16, /* bitsize */
+ true, /* pc_relative */
+ 0, /* bitpos */
+ complain_overflow_dont, /* complain_on_overflow */
+ _bfd_mips_elf_hi16_reloc, /* special_function */
+ "R_MIPS_GNU_REL_HI16", /* name */
+ true, /* partial_inplace */
0xffff, /* src_mask */
0xffff, /* dst_mask */
- false); /* pcrel_offset */
+ true); /* pcrel_offset */
+
+/* Low 16 bits of symbol value, pc-relative. */
+static reloc_howto_type elf_mips_gnu_rel_lo16 =
+ HOWTO (R_MIPS_GNU_REL_LO16, /* type */
+ 0, /* rightshift */
+ 2, /* size (0 = byte, 1 = short, 2 = long) */
+ 16, /* bitsize */
+ true, /* pc_relative */
+ 0, /* bitpos */
+ complain_overflow_dont, /* complain_on_overflow */
+ _bfd_mips_elf_lo16_reloc, /* special_function */
+ "R_MIPS_GNU_REL_LO16", /* name */
+ true, /* partial_inplace */
+ 0xffff, /* src_mask */
+ 0xffff, /* dst_mask */
+ true); /* pcrel_offset */
+
+/* 16 bit offset for pc-relative branches. */
+static reloc_howto_type elf_mips_gnu_rel16_s2 =
+ HOWTO (R_MIPS_GNU_REL16_S2, /* type */
+ 2, /* rightshift */
+ 2, /* size (0 = byte, 1 = short, 2 = long) */
+ 16, /* bitsize */
+ true, /* pc_relative */
+ 0, /* bitpos */
+ complain_overflow_signed, /* complain_on_overflow */
+ bfd_elf_generic_reloc, /* special_function */
+ "R_MIPS_GNU_REL16_S2", /* name */
+ true, /* partial_inplace */
+ 0xffff, /* src_mask */
+ 0xffff, /* dst_mask */
+ true); /* pcrel_offset */
+
+/* 64 bit pc-relative. */
+static reloc_howto_type elf_mips_gnu_pcrel64 =
+ HOWTO (R_MIPS_PC64, /* type */
+ 0, /* rightshift */
+ 4, /* size (0 = byte, 1 = short, 2 = long) */
+ 64, /* bitsize */
+ true, /* pc_relative */
+ 0, /* bitpos */
+ complain_overflow_signed, /* complain_on_overflow */
+ bfd_elf_generic_reloc, /* special_function */
+ "R_MIPS_PC64", /* name */
+ true, /* partial_inplace */
+ MINUS_ONE, /* src_mask */
+ MINUS_ONE, /* dst_mask */
+ true); /* pcrel_offset */
+/* 32 bit pc-relative. */
+static reloc_howto_type elf_mips_gnu_pcrel32 =
+ HOWTO (R_MIPS_PC32, /* type */
+ 0, /* rightshift */
+ 2, /* size (0 = byte, 1 = short, 2 = long) */
+ 32, /* bitsize */
+ true, /* pc_relative */
+ 0, /* bitpos */
+ complain_overflow_signed, /* complain_on_overflow */
+ bfd_elf_generic_reloc, /* special_function */
+ "R_MIPS_PC32", /* name */
+ true, /* partial_inplace */
+ 0xffffffff, /* src_mask */
+ 0xffffffff, /* dst_mask */
+ true); /* pcrel_offset */
/* GNU extension to record C++ vtable hierarchy */
static reloc_howto_type elf_mips_gnu_vtinherit_howto =
reloc. This extension permits gcc to output the HI and LO relocs
itself. */
-struct mips_hi16
-{
+struct mips_hi16 {
struct mips_hi16 *next;
bfd_byte *addr;
bfd_vma addend;
input_section,
output_bfd,
error_message)
- bfd *abfd;
+ bfd *abfd ATTRIBUTE_UNUSED;
arelent *reloc_entry;
asymbol *symbol;
PTR data;
if ((val & 0x8000) != 0)
val += 0x10000;
- insn = (insn &~ 0xffff) | ((val >> 16) & 0xffff);
+ insn = (insn & ~0xffff) | ((val >> 16) & 0xffff);
bfd_put_32 (abfd, insn, l->addr);
if (strcmp (bfd_asymbol_name (symbol), "_gp_disp") == 0)
abort ();
}
+/* Set the GP value for OUTPUT_BFD. Returns false if this is a
+ dangerous relocation. */
+
+static boolean
+mips_elf_assign_gp (output_bfd, pgp)
+ bfd *output_bfd;
+ bfd_vma *pgp;
+{
+ unsigned int count;
+ asymbol **sym;
+ unsigned int i;
+
+ /* If we've already figured out what GP will be, just return it. */
+ *pgp = _bfd_get_gp_value (output_bfd);
+ if (*pgp)
+ return true;
+
+ count = bfd_get_symcount (output_bfd);
+ sym = bfd_get_outsymbols (output_bfd);
+
+ /* The linker script will have created a symbol named `_gp' with the
+ appropriate value. */
+ if (sym == (asymbol **) NULL)
+ i = count;
+ else
+ {
+ for (i = 0; i < count; i++, sym++)
+ {
+ register CONST char *name;
+
+ name = bfd_asymbol_name (*sym);
+ if (*name == '_' && strcmp (name, "_gp") == 0)
+ {
+ *pgp = bfd_asymbol_value (*sym);
+ _bfd_set_gp_value (output_bfd, *pgp);
+ break;
+ }
+ }
+ }
+
+ if (i >= count)
+ {
+ /* Only get the error once. */
+ *pgp = 4;
+ _bfd_set_gp_value (output_bfd, *pgp);
+ return false;
+ }
+
+ return true;
+}
+
/* We have to figure out the gp value, so that we can adjust the
symbol value correctly. We look up the symbol _gp in the output
BFD. If we can't find it, we're stuck. We cache it in the ELF
*pgp = symbol->section->output_section->vma + 0x4000;
_bfd_set_gp_value (output_bfd, *pgp);
}
- else
+ else if (!mips_elf_assign_gp (output_bfd, pgp))
{
- unsigned int count;
- asymbol **sym;
- unsigned int i;
-
- count = bfd_get_symcount (output_bfd);
- sym = bfd_get_outsymbols (output_bfd);
-
- if (sym == (asymbol **) NULL)
- i = count;
- else
- {
- for (i = 0; i < count; i++, sym++)
- {
- register CONST char *name;
-
- name = bfd_asymbol_name (*sym);
- if (*name == '_' && strcmp (name, "_gp") == 0)
- {
- *pgp = bfd_asymbol_value (*sym);
- _bfd_set_gp_value (output_bfd, *pgp);
- break;
- }
- }
- }
-
- if (i >= count)
- {
- /* Only get the error once. */
- *pgp = 4;
- _bfd_set_gp_value (output_bfd, *pgp);
- *error_message =
- (char *) _("GP relative relocation when _gp not defined");
- return bfd_reloc_dangerous;
- }
+ *error_message =
+ (char *) _("GP relative relocation when _gp not defined");
+ return bfd_reloc_dangerous;
}
}
|| (symbol->flags & BSF_SECTION_SYM) != 0)
val += relocation - gp;
- insn = (insn &~ 0xffff) | (val & 0xffff);
+ insn = (insn & ~0xffff) | (val & 0xffff);
bfd_put_32 (abfd, insn, (bfd_byte *) data + reloc_entry->address);
if (relocateable)
reloc_entry->address += input_section->output_offset;
/* Make sure it fit in 16 bits. */
- if (val >= 0x8000 && val < 0xffff8000)
+ if ((long) val >= 0x8000 || (long) val < -0x8000)
return bfd_reloc_overflow;
return bfd_reloc_ok;
static bfd_reloc_status_type
mips16_jump_reloc (abfd, reloc_entry, symbol, data, input_section,
output_bfd, error_message)
- bfd *abfd;
+ bfd *abfd ATTRIBUTE_UNUSED;
arelent *reloc_entry;
asymbol *symbol;
- PTR data;
+ PTR data ATTRIBUTE_UNUSED;
asection *input_section;
bfd *output_bfd;
- char **error_message;
+ char **error_message ATTRIBUTE_UNUSED;
{
if (output_bfd != (bfd *) NULL
&& (symbol->flags & BSF_SECTION_SYM) == 0
return 3;
case E_MIPS_ARCH_4:
return 4;
+ case E_MIPS_ARCH_5:
+ return 5;
+ case E_MIPS_ARCH_32:
+ return 32;
+ case E_MIPS_ARCH_64:
+ return 64;
}
return 4;
}
case E_MIPS_MACH_4650:
return bfd_mach_mips4650;
+ case E_MIPS_MACH_MIPS32_4K:
+ return bfd_mach_mips32_4k;
+
+ case E_MIPS_MACH_SB1:
+ return bfd_mach_mips_sb1;
+
default:
switch (flags & EF_MIPS_ARCH)
{
case E_MIPS_ARCH_4:
return bfd_mach_mips8000;
break;
+
+ case E_MIPS_ARCH_5:
+ return bfd_mach_mips5;
+ break;
+
+ case E_MIPS_ARCH_32:
+ return bfd_mach_mips32;
+ break;
+
+ case E_MIPS_ARCH_64:
+ return bfd_mach_mips64;
+ break;
}
}
return 0;
}
-/* Return printable name for ABI from flagword. */
+/* Return printable name for ABI. */
-static INLINE char*
-elf_mips_abi_name (flags)
- flagword flags;
+static INLINE char *
+elf_mips_abi_name (abfd)
+ bfd *abfd;
{
+ flagword flags;
+
+ if (ABI_N32_P (abfd))
+ return "N32";
+ else if (ABI_64_P (abfd))
+ return "64";
+
+ flags = elf_elfheader (abfd)->e_flags;
switch (flags & EF_MIPS_ABI)
{
case 0:
enum elf_mips_reloc_type elf_reloc_val;
};
-static CONST struct elf_reloc_map mips_reloc_map[] =
-{
+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 },
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;
}
}
/* Given a MIPS Elf32_Internal_Rel, fill in an arelent structure. */
-static void
-mips_info_to_howto_rel (abfd, cache_ptr, dst)
- bfd *abfd;
- arelent *cache_ptr;
- Elf32_Internal_Rel *dst;
+static reloc_howto_type *
+mips_rtype_to_howto (r_type)
+ unsigned int r_type;
{
- unsigned int r_type;
-
- r_type = ELF32_R_TYPE (dst->r_info);
switch (r_type)
{
case R_MIPS16_26:
- cache_ptr->howto = &elf_mips16_jump_howto;
+ return &elf_mips16_jump_howto;
break;
case R_MIPS16_GPREL:
- cache_ptr->howto = &elf_mips16_gprel_howto;
+ return &elf_mips16_gprel_howto;
break;
case R_MIPS_GNU_VTINHERIT:
- cache_ptr->howto = &elf_mips_gnu_vtinherit_howto;
+ return &elf_mips_gnu_vtinherit_howto;
break;
case R_MIPS_GNU_VTENTRY:
- cache_ptr->howto = &elf_mips_gnu_vtentry_howto;
+ 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);
- cache_ptr->howto = &elf_mips_howto_table[r_type];
+ return &elf_mips_howto_table[r_type];
break;
}
+}
+
+/* Given a MIPS Elf32_Internal_Rel, fill in an arelent structure. */
+
+static void
+mips_info_to_howto_rel (abfd, cache_ptr, dst)
+ bfd *abfd;
+ arelent *cache_ptr;
+ Elf32_Internal_Rel *dst;
+{
+ unsigned int r_type;
+
+ r_type = ELF32_R_TYPE (dst->r_info);
+ cache_ptr->howto = mips_rtype_to_howto (r_type);
/* The addend for a GPREL16 or LITERAL relocation comes from the GP
value for the object file. We get the addend now, rather than
bfd_h_put_16 (abfd, in->section, ex->section);
bfd_h_put_32 (abfd, in->info, ex->info);
}
+#if 0
+/* Swap in an MSYM entry. */
+
+static void
+bfd_mips_elf_swap_msym_in (abfd, ex, in)
+ bfd *abfd;
+ const Elf32_External_Msym *ex;
+ Elf32_Internal_Msym *in;
+{
+ in->ms_hash_value = bfd_h_get_32 (abfd, ex->ms_hash_value);
+ in->ms_info = bfd_h_get_32 (abfd, ex->ms_info);
+}
+#endif
+/* Swap out an MSYM entry. */
+
+static void
+bfd_mips_elf_swap_msym_out (abfd, in, ex)
+ bfd *abfd;
+ const Elf32_Internal_Msym *in;
+ Elf32_External_Msym *ex;
+{
+ bfd_h_put_32 (abfd, in->ms_hash_value, ex->ms_hash_value);
+ bfd_h_put_32 (abfd, in->ms_info, ex->ms_info);
+}
\f
/* Determine whether a symbol is global for the purposes of splitting
the symbol table into global symbols and local symbols. At least
symbols. On most ELF targets the split is between static symbols
and externally visible symbols. */
-/*ARGSUSED*/
static boolean
mips_elf_sym_is_global (abfd, sym)
- bfd *abfd;
+ bfd *abfd ATTRIBUTE_UNUSED;
asymbol *sym;
{
return (sym->flags & BSF_SECTION_SYM) == 0 ? true : false;
_bfd_mips_elf_object_p (abfd)
bfd *abfd;
{
- bfd_default_set_arch_mach (abfd, bfd_arch_mips,
- elf_mips_mach (elf_elfheader (abfd)->e_flags));
- return true;
-}
-
-/* Set the right machine number for a 32-bit MIPS ELF file. */
-
-static boolean
-mips_elf32_object_p (abfd)
- bfd *abfd;
-{
- /* Irix 5 is broken. Object file symbol tables are not always
+ /* Irix 5 and 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. */
elf_bad_symtab (abfd) = true;
- return _bfd_mips_elf_object_p (abfd);
+ bfd_default_set_arch_mach (abfd, bfd_arch_mips,
+ elf_mips_mach (elf_elfheader (abfd)->e_flags));
+ return true;
}
/* The final processing done just before writing out a MIPS ELF object
file. This gets the MIPS architecture right based on the machine
number. This is used by both the 32-bit and the 64-bit ABI. */
-/*ARGSUSED*/
void
_bfd_mips_elf_final_write_processing (abfd, linker)
bfd *abfd;
- boolean linker;
+ boolean linker ATTRIBUTE_UNUSED;
{
unsigned long val;
unsigned int i;
case bfd_mach_mips8000:
val = E_MIPS_ARCH_4;
break;
+
+ case bfd_mach_mips32:
+ val = E_MIPS_ARCH_32;
+ break;
+
+ case bfd_mach_mips32_4k:
+ val = E_MIPS_ARCH_32 | E_MIPS_MACH_MIPS32_4K;
+ break;
+
+ case bfd_mach_mips5:
+ val = E_MIPS_ARCH_5;
+ break;
+
+ case bfd_mach_mips64:
+ val = E_MIPS_ARCH_64;
+ break;
+
+ case bfd_mach_mips_sb1:
+ val = E_MIPS_ARCH_64 | E_MIPS_MACH_SB1;
+ break;
}
- elf_elfheader (abfd)->e_flags &= ~ (EF_MIPS_ARCH | EF_MIPS_MACH);
+ elf_elfheader (abfd)->e_flags &= ~(EF_MIPS_ARCH | EF_MIPS_MACH);
elf_elfheader (abfd)->e_flags |= val;
/* Set the sh_info field for .gptab sections and other appropriate
{
switch ((*hdrpp)->sh_type)
{
+ case SHT_MIPS_MSYM:
case SHT_MIPS_LIBLIST:
sec = bfd_get_section_by_name (abfd, ".dynstr");
if (sec != NULL)
}
}
\f
-/* Function to keep MIPS specific file flags like as EF_MIPS_PIC. */
+/* Function to keep MIPS specific file flags like as EF_MIPS_PIC. */
boolean
_bfd_mips_elf_set_private_flags (abfd, flags)
boolean ok;
/* Check if we have the same endianess */
- if (ibfd->xvec->byteorder != obfd->xvec->byteorder
- && obfd->xvec->byteorder != BFD_ENDIAN_UNKNOWN)
- {
- const char *msg;
-
- if (bfd_big_endian (ibfd))
- msg = _("%s: compiled for a big endian system and target is little endian");
- else
- msg = _("%s: compiled for a little endian system and target is big endian");
-
- (*_bfd_error_handler) (msg, bfd_get_filename (ibfd));
-
- bfd_set_error (bfd_error_wrong_format);
- return false;
- }
+ if (_bfd_generic_verify_endian_match (ibfd, obfd) == false)
+ return false;
if (bfd_get_flavour (ibfd) != bfd_target_elf_flavour
|| bfd_get_flavour (obfd) != bfd_target_elf_flavour)
{
elf_flags_init (obfd) = true;
elf_elfheader (obfd)->e_flags = new_flags;
+ elf_elfheader (obfd)->e_ident[EI_CLASS]
+ = elf_elfheader (ibfd)->e_ident[EI_CLASS];
if (bfd_get_arch (obfd) == bfd_get_arch (ibfd)
&& bfd_get_arch_info (obfd)->the_default)
ok = false;
}
- /* Compare the ISA's. */
+ /* Compare the ISA's. */
if ((new_flags & (EF_MIPS_ARCH | EF_MIPS_MACH))
!= (old_flags & (EF_MIPS_ARCH | EF_MIPS_MACH)))
{
int old_isa = elf_mips_isa (old_flags);
/* If either has no machine specified, just compare the general isa's.
- Some combinations of machines are ok, if the isa's match. */
- if (! new_mach
+ Some combinations of machines are ok, if the isa's match. */
+ if (! new_mach
|| ! old_mach
|| new_mach == old_mach
)
{
- /* Don't warn about mixing -mips1 and -mips2 code, or mixing -mips3
- and -mips4 code. They will normally use the same data sizes and
- calling conventions. */
+ /* Don't warn about mixing code using 32-bit ISAs, or mixing code
+ using 64-bit ISAs. They will normally use the same data sizes
+ and calling conventions. */
- if ((new_isa == 1 || new_isa == 2)
- ? (old_isa != 1 && old_isa != 2)
- : (old_isa == 1 || old_isa == 2))
+ if (( (new_isa == 1 || new_isa == 2 || new_isa == 32)
+ ^ (old_isa == 1 || old_isa == 2 || old_isa == 32)) != 0)
{
(*_bfd_error_handler)
(_("%s: ISA mismatch (-mips%d) with previous modules (-mips%d)"),
ok = false;
}
- new_flags &= ~ (EF_MIPS_ARCH | EF_MIPS_MACH);
- old_flags &= ~ (EF_MIPS_ARCH | EF_MIPS_MACH);
+ new_flags &= ~(EF_MIPS_ARCH | EF_MIPS_MACH);
+ old_flags &= ~(EF_MIPS_ARCH | EF_MIPS_MACH);
}
- /* Compare ABI's */
- if ((new_flags & EF_MIPS_ABI) != (old_flags & EF_MIPS_ABI))
+ /* Compare ABI's. The 64-bit ABI does not use EF_MIPS_ABI. But, it
+ does set EI_CLASS differently from any 32-bit ABI. */
+ if ((new_flags & EF_MIPS_ABI) != (old_flags & EF_MIPS_ABI)
+ || (elf_elfheader (ibfd)->e_ident[EI_CLASS]
+ != elf_elfheader (obfd)->e_ident[EI_CLASS]))
{
- /* Only error if both are set (to different values). */
- if ((new_flags & EF_MIPS_ABI)
- && (old_flags & EF_MIPS_ABI))
+ /* Only error if both are set (to different values). */
+ if (((new_flags & EF_MIPS_ABI) && (old_flags & EF_MIPS_ABI))
+ || (elf_elfheader (ibfd)->e_ident[EI_CLASS]
+ != elf_elfheader (obfd)->e_ident[EI_CLASS]))
{
(*_bfd_error_handler)
(_("%s: ABI mismatch: linking %s module with previous %s modules"),
bfd_get_filename (ibfd),
- elf_mips_abi_name (new_flags),
- elf_mips_abi_name (old_flags));
+ elf_mips_abi_name (ibfd),
+ elf_mips_abi_name (obfd));
ok = false;
}
new_flags &= ~EF_MIPS_ABI;
return true;
}
\f
-static boolean
+boolean
_bfd_mips_elf_print_private_bfd_data (abfd, ptr)
bfd *abfd;
PTR ptr;
_bfd_elf_print_private_bfd_data (abfd, ptr);
/* xgettext:c-format */
- fprintf (file, _ ("private flags = %lx:"), elf_elfheader (abfd)->e_flags);
+ fprintf (file, _("private flags = %lx:"), elf_elfheader (abfd)->e_flags);
if ((elf_elfheader (abfd)->e_flags & EF_MIPS_ABI) == E_MIPS_ABI_O32)
- fprintf (file, _ (" [abi=O32]"));
+ fprintf (file, _(" [abi=O32]"));
else if ((elf_elfheader (abfd)->e_flags & EF_MIPS_ABI) == E_MIPS_ABI_O64)
- fprintf (file, _ (" [abi=O64]"));
+ fprintf (file, _(" [abi=O64]"));
else if ((elf_elfheader (abfd)->e_flags & EF_MIPS_ABI) == E_MIPS_ABI_EABI32)
- fprintf (file, _ (" [abi=EABI32]"));
+ fprintf (file, _(" [abi=EABI32]"));
else if ((elf_elfheader (abfd)->e_flags & EF_MIPS_ABI) == E_MIPS_ABI_EABI64)
- fprintf (file, _ (" [abi=EABI64]"));
+ fprintf (file, _(" [abi=EABI64]"));
else if ((elf_elfheader (abfd)->e_flags & EF_MIPS_ABI))
- fprintf (file, _ (" [abi unknown]"));
+ fprintf (file, _(" [abi unknown]"));
+ else if (ABI_N32_P (abfd))
+ fprintf (file, _(" [abi=N32]"));
+ else if (ABI_64_P (abfd))
+ fprintf (file, _(" [abi=64]"));
else
- fprintf (file, _ (" [no abi set]"));
+ fprintf (file, _(" [no abi set]"));
if ((elf_elfheader (abfd)->e_flags & EF_MIPS_ARCH) == E_MIPS_ARCH_1)
- fprintf (file, _ (" [mips1]"));
+ fprintf (file, _(" [mips1]"));
else if ((elf_elfheader (abfd)->e_flags & EF_MIPS_ARCH) == E_MIPS_ARCH_2)
- fprintf (file, _ (" [mips2]"));
+ fprintf (file, _(" [mips2]"));
else if ((elf_elfheader (abfd)->e_flags & EF_MIPS_ARCH) == E_MIPS_ARCH_3)
- fprintf (file, _ (" [mips3]"));
+ fprintf (file, _(" [mips3]"));
else if ((elf_elfheader (abfd)->e_flags & EF_MIPS_ARCH) == E_MIPS_ARCH_4)
- fprintf (file, _ (" [mips4]"));
+ fprintf (file, _(" [mips4]"));
+ else if ((elf_elfheader (abfd)->e_flags & EF_MIPS_ARCH) == E_MIPS_ARCH_5)
+ fprintf (file, _ (" [mips5]"));
+ else if ((elf_elfheader (abfd)->e_flags & EF_MIPS_ARCH) == E_MIPS_ARCH_32)
+ fprintf (file, _ (" [mips32]"));
+ else if ((elf_elfheader (abfd)->e_flags & EF_MIPS_ARCH) == E_MIPS_ARCH_64)
+ fprintf (file, _ (" [mips64]"));
else
- fprintf (file, _ (" [unknown ISA]"));
+ fprintf (file, _(" [unknown ISA]"));
if (elf_elfheader (abfd)->e_flags & EF_MIPS_32BITMODE)
- fprintf (file, _ (" [32bitmode]"));
+ fprintf (file, _(" [32bitmode]"));
else
- fprintf (file, _ (" [not 32bitmode]"));
+ fprintf (file, _(" [not 32bitmode]"));
fputc ('\n', file);
_bfd_mips_elf_section_from_shdr (abfd, hdr, name)
bfd *abfd;
Elf_Internal_Shdr *hdr;
- const char *name;
+ char *name;
{
flagword flags = 0;
return false;
break;
case SHT_MIPS_MSYM:
- if (strcmp (name, ".msym") != 0)
+ if (strcmp (name, MIPS_ELF_MSYM_SECTION_NAME (abfd)) != 0)
return false;
break;
case SHT_MIPS_CONFLICT:
return false;
break;
case SHT_MIPS_OPTIONS:
- if (strcmp (name, ".options") != 0
- && strcmp (name, ".MIPS.options") != 0)
+ if (strcmp (name, MIPS_ELF_OPTIONS_SECTION_NAME (abfd)) != 0)
return false;
break;
case SHT_MIPS_DWARF:
return false;
}
- return true;
-}
-
-/* Handle a 32-bit MIPS ELF specific section. */
-
-static boolean
-mips_elf32_section_from_shdr (abfd, hdr, name)
- bfd *abfd;
- Elf_Internal_Shdr *hdr;
- char *name;
-{
- if (! _bfd_mips_elf_section_from_shdr (abfd, hdr, name))
- return false;
-
/* FIXME: We should record sh_info for a .gptab section. */
/* For a .reginfo section, set the gp value in the tdata information
bfd_mips_elf_swap_options_in (abfd, (Elf_External_Options *) l,
&intopt);
- if (intopt.kind == ODK_REGINFO)
+ if (ABI_64_P (abfd) && intopt.kind == ODK_REGINFO)
+ {
+ Elf64_Internal_RegInfo intreg;
+
+ bfd_mips_elf64_swap_reginfo_in
+ (abfd,
+ ((Elf64_External_RegInfo *)
+ (l + sizeof (Elf_External_Options))),
+ &intreg);
+ elf_gp (abfd) = intreg.ri_gp_value;
+ }
+ else if (intopt.kind == ODK_REGINFO)
{
Elf32_RegInfo intreg;
hdr->sh_info = sec->_raw_size / sizeof (Elf32_Lib);
/* The sh_link field is set in final_write_processing. */
}
- else if (strcmp (name, ".msym") == 0)
- {
- hdr->sh_type = SHT_MIPS_MSYM;
- hdr->sh_entsize = 8;
- /* FIXME: Set the sh_info field. */
- }
else if (strcmp (name, ".conflict") == 0)
hdr->sh_type = SHT_MIPS_CONFLICT;
else if (strncmp (name, ".gptab.", sizeof ".gptab." - 1) == 0)
hdr->sh_type = SHT_MIPS_REGINFO;
/* In a shared object on Irix 5.3, the .reginfo section has an
entsize of 0x18. FIXME: Does this matter? */
- if (SGI_COMPAT (abfd) && (abfd->flags & DYNAMIC) != 0)
- hdr->sh_entsize = sizeof (Elf32_External_RegInfo);
+ if (SGI_COMPAT (abfd))
+ {
+ if ((abfd->flags & DYNAMIC) != 0)
+ hdr->sh_entsize = sizeof (Elf32_External_RegInfo);
+ else
+ hdr->sh_entsize = 1;
+ }
else
- hdr->sh_entsize = 1;
+ hdr->sh_entsize = sizeof (Elf32_External_RegInfo);
}
else if (SGI_COMPAT (abfd)
&& (strcmp (name, ".hash") == 0
|| strcmp (name, ".dynamic") == 0
|| strcmp (name, ".dynstr") == 0))
{
- hdr->sh_entsize = 0;
+ if (SGI_COMPAT (abfd))
+ hdr->sh_entsize = 0;
#if 0
/* This isn't how the Irix 6 linker behaves. */
hdr->sh_info = SIZEOF_MIPS_DYNSYM_SECNAMES;
#endif
}
else if (strcmp (name, ".got") == 0
+ || strcmp (name, MIPS_ELF_SRDATA_SECTION_NAME (abfd)) == 0
|| strcmp (name, ".sdata") == 0
|| strcmp (name, ".sbss") == 0
|| strcmp (name, ".lit4") == 0
hdr->sh_flags |= SHF_MIPS_NOSTRIP;
/* The sh_info field is set in final_write_processing. */
}
- else if (strcmp (name, ".options") == 0
- || strcmp (name, ".MIPS.options") == 0)
+ else if (strcmp (name, MIPS_ELF_OPTIONS_SECTION_NAME (abfd)) == 0)
{
hdr->sh_type = SHT_MIPS_OPTIONS;
hdr->sh_entsize = 1;
hdr->sh_flags |= SHF_MIPS_NOSTRIP;
/* The sh_link field is set in final_write_processing. */
}
+ else if (strcmp (name, MIPS_ELF_MSYM_SECTION_NAME (abfd)) == 0)
+ {
+ hdr->sh_type = SHT_MIPS_MSYM;
+ hdr->sh_flags |= SHF_ALLOC;
+ hdr->sh_entsize = 8;
+ }
+
+ /* The generic elf_fake_sections will set up REL_HDR using the
+ default kind of relocations. But, we may actually need both
+ kinds of relocations, so we set up the second header here. */
+ if ((sec->flags & SEC_RELOC) != 0)
+ {
+ struct bfd_elf_section_data *esd;
+
+ esd = elf_section_data (sec);
+ BFD_ASSERT (esd->rel_hdr2 == NULL);
+ esd->rel_hdr2
+ = (Elf_Internal_Shdr *) bfd_zalloc (abfd, sizeof (Elf_Internal_Shdr));
+ if (!esd->rel_hdr2)
+ return false;
+ _bfd_elf_init_reloc_shdr (abfd, esd->rel_hdr2, sec,
+ !elf_section_data (sec)->use_rela_p);
+ }
return true;
}
boolean
_bfd_mips_elf_section_from_bfd_section (abfd, hdr, sec, retval)
- bfd *abfd;
- Elf32_Internal_Shdr *hdr;
+ bfd *abfd ATTRIBUTE_UNUSED;
+ Elf32_Internal_Shdr *hdr ATTRIBUTE_UNUSED;
asection *sec;
int *retval;
{
file_ptr offset;
bfd_size_type count;
{
- if (strcmp (section->name, ".options") == 0
- || strcmp (section->name, ".MIPS.options") == 0)
+ if (strcmp (section->name, MIPS_ELF_OPTIONS_SECTION_NAME (abfd)) == 0)
{
bfd_byte *c;
bfd *abfd;
Elf_Internal_Shdr *hdr;
{
- if (hdr->bfd_section != NULL)
- {
- const char *name = bfd_get_section_name (abfd, hdr->bfd_section);
-
- if (strcmp (name, ".sdata") == 0)
- {
- hdr->sh_flags |= SHF_ALLOC | SHF_WRITE | SHF_MIPS_GPREL;
- hdr->sh_type = SHT_PROGBITS;
- }
- else if (strcmp (name, ".sbss") == 0)
- {
- hdr->sh_flags |= SHF_ALLOC | SHF_WRITE | SHF_MIPS_GPREL;
- hdr->sh_type = SHT_NOBITS;
- }
- else if (strcmp (name, ".lit8") == 0
- || strcmp (name, ".lit4") == 0)
- {
- hdr->sh_flags |= SHF_ALLOC | SHF_WRITE | SHF_MIPS_GPREL;
- hdr->sh_type = SHT_PROGBITS;
- }
- else if (strcmp (name, ".compact_rel") == 0)
- {
- hdr->sh_flags = 0;
- hdr->sh_type = SHT_PROGBITS;
- }
- else if (strcmp (name, ".rtproc") == 0)
- {
- if (hdr->sh_addralign != 0 && hdr->sh_entsize == 0)
- {
- unsigned int adjust;
-
- adjust = hdr->sh_size % hdr->sh_addralign;
- if (adjust != 0)
- hdr->sh_size += hdr->sh_addralign - adjust;
- }
- }
- }
-
- return true;
-}
-
-/* Work over a section just before writing it out. We update the GP
- value in the SHT_MIPS_REGINFO and SHT_MIPS_OPTIONS sections based
- on the value we are using. */
-
-static boolean
-mips_elf32_section_processing (abfd, hdr)
- bfd *abfd;
- Elf32_Internal_Shdr *hdr;
-{
- if (hdr->sh_type == SHT_MIPS_REGINFO)
+ if (hdr->sh_type == SHT_MIPS_REGINFO
+ && hdr->sh_size > 0)
{
bfd_byte buf[4];
bfd_mips_elf_swap_options_in (abfd, (Elf_External_Options *) l,
&intopt);
- if (intopt.kind == ODK_REGINFO)
+ if (ABI_64_P (abfd) && intopt.kind == ODK_REGINFO)
+ {
+ bfd_byte buf[8];
+
+ if (bfd_seek (abfd,
+ (hdr->sh_offset
+ + (l - contents)
+ + sizeof (Elf_External_Options)
+ + (sizeof (Elf64_External_RegInfo) - 8)),
+ SEEK_SET) == -1)
+ return false;
+ bfd_h_put_64 (abfd, elf_gp (abfd), buf);
+ if (bfd_write (buf, 1, 8, abfd) != 8)
+ return false;
+ }
+ else if (intopt.kind == ODK_REGINFO)
{
bfd_byte buf[4];
+ (l - contents)
+ sizeof (Elf_External_Options)
+ (sizeof (Elf32_External_RegInfo) - 4)),
- SEEK_SET) == -1)
+ SEEK_SET) == -1)
return false;
bfd_h_put_32 (abfd, elf_gp (abfd), buf);
if (bfd_write (buf, 1, 4, abfd) != 4)
}
}
- return _bfd_mips_elf_section_processing (abfd, hdr);
+ if (hdr->bfd_section != NULL)
+ {
+ const char *name = bfd_get_section_name (abfd, hdr->bfd_section);
+
+ if (strcmp (name, ".sdata") == 0
+ || strcmp (name, ".lit8") == 0
+ || strcmp (name, ".lit4") == 0)
+ {
+ hdr->sh_flags |= SHF_ALLOC | SHF_WRITE | SHF_MIPS_GPREL;
+ hdr->sh_type = SHT_PROGBITS;
+ }
+ else if (strcmp (name, ".sbss") == 0)
+ {
+ hdr->sh_flags |= SHF_ALLOC | SHF_WRITE | SHF_MIPS_GPREL;
+ hdr->sh_type = SHT_NOBITS;
+ }
+ else if (strcmp (name, MIPS_ELF_SRDATA_SECTION_NAME (abfd)) == 0)
+ {
+ hdr->sh_flags |= SHF_ALLOC | SHF_MIPS_GPREL;
+ hdr->sh_type = SHT_PROGBITS;
+ }
+ else if (strcmp (name, ".compact_rel") == 0)
+ {
+ hdr->sh_flags = 0;
+ hdr->sh_type = SHT_PROGBITS;
+ }
+ else if (strcmp (name, ".rtproc") == 0)
+ {
+ if (hdr->sh_addralign != 0 && hdr->sh_entsize == 0)
+ {
+ unsigned int adjust;
+
+ adjust = hdr->sh_size % hdr->sh_addralign;
+ if (adjust != 0)
+ hdr->sh_size += hdr->sh_addralign - adjust;
+ }
+ }
+ }
+
+ return true;
}
\f
/* MIPS ELF uses two common sections. One is the usual one, and the
static asymbol mips_elf_acom_symbol;
static asymbol *mips_elf_acom_symbol_ptr;
-/* The Irix 5 support uses two virtual sections, which represent
- text/data symbols defined in dynamic objects. */
-static asection mips_elf_text_section;
-static asection *mips_elf_text_section_ptr;
-static asymbol mips_elf_text_symbol;
-static asymbol *mips_elf_text_symbol_ptr;
-
-static asection mips_elf_data_section;
-static asection *mips_elf_data_section_ptr;
-static asymbol mips_elf_data_symbol;
-static asymbol *mips_elf_data_symbol_ptr;
-
/* Handle the special MIPS section numbers that a symbol may use.
This is used for both the 32-bit and the 64-bit ABI. */
case SHN_COMMON:
/* Common symbols less than the GP size are automatically
- treated as SHN_MIPS_SCOMMON symbols. */
- if (asym->value > elf_gp_size (abfd))
+ treated as SHN_MIPS_SCOMMON symbols on IRIX5. */
+ if (asym->value > elf_gp_size (abfd)
+ || IRIX_COMPAT (abfd) == ict_irix6)
break;
/* Fall through. */
case SHN_MIPS_SCOMMON:
/* When creating an Irix 5 executable, we need REGINFO and RTPROC
segments. */
-static int
-mips_elf_additional_program_headers (abfd)
+int
+_bfd_mips_elf_additional_program_headers (abfd)
bfd *abfd;
{
asection *s;
- int ret;
-
- ret = 0;
-
- if (! SGI_COMPAT (abfd))
- return ret;
+ int ret = 0;
+ /* See if we need a PT_MIPS_REGINFO segment. */
s = bfd_get_section_by_name (abfd, ".reginfo");
- if (s != NULL && (s->flags & SEC_LOAD) != 0)
- {
- /* We need a PT_MIPS_REGINFO segment. */
- ++ret;
- }
+ if (s && (s->flags & SEC_LOAD))
+ ++ret;
- if (bfd_get_section_by_name (abfd, ".dynamic") != NULL
- && bfd_get_section_by_name (abfd, ".mdebug") != NULL)
- {
- /* We need a PT_MIPS_RTPROC segment. */
- ++ret;
- }
+ /* See if we need a PT_MIPS_OPTIONS segment. */
+ if (IRIX_COMPAT (abfd) == ict_irix6
+ && bfd_get_section_by_name (abfd,
+ MIPS_ELF_OPTIONS_SECTION_NAME (abfd)))
+ ++ret;
+
+ /* See if we need a PT_MIPS_RTPROC segment. */
+ if (IRIX_COMPAT (abfd) == ict_irix5
+ && bfd_get_section_by_name (abfd, ".dynamic")
+ && bfd_get_section_by_name (abfd, ".mdebug"))
+ ++ret;
return ret;
}
/* Modify the segment map for an Irix 5 executable. */
-static boolean
-mips_elf_modify_segment_map (abfd)
+boolean
+_bfd_mips_elf_modify_segment_map (abfd)
bfd *abfd;
{
asection *s;
struct elf_segment_map *m, **pm;
- if (! SGI_COMPAT (abfd))
- return true;
-
/* If there is a .reginfo section, we need a PT_MIPS_REGINFO
segment. */
s = bfd_get_section_by_name (abfd, ".reginfo");
}
}
- /* If there are .dynamic and .mdebug sections, we make a room for
- the RTPROC header. FIXME: Rewrite without section names. */
- if (bfd_get_section_by_name (abfd, ".interp") == NULL
- && bfd_get_section_by_name (abfd, ".dynamic") != NULL
- && bfd_get_section_by_name (abfd, ".mdebug") != NULL)
+ /* For IRIX 6, we don't have .mdebug sections, nor does anything but
+ .dynamic end up in PT_DYNAMIC. However, we do have to insert a
+ PT_OPTIONS segement immediately following the program header
+ table. */
+ if (IRIX_COMPAT (abfd) == ict_irix6)
{
- for (m = elf_tdata (abfd)->segment_map; m != NULL; m = m->next)
- if (m->p_type == PT_MIPS_RTPROC)
+ asection *s;
+
+ for (s = abfd->sections; s; s = s->next)
+ if (elf_section_data (s)->this_hdr.sh_type == SHT_MIPS_OPTIONS)
break;
- if (m == NULL)
+
+ if (s)
{
- m = (struct elf_segment_map *) bfd_zalloc (abfd, sizeof *m);
- if (m == NULL)
- return false;
+ struct elf_segment_map *options_segment;
+
+ /* Usually, there's a program header table. But, sometimes
+ there's not (like when running the `ld' testsuite). So,
+ if there's no program header table, we just put the
+ options segement at the end. */
+ for (pm = &elf_tdata (abfd)->segment_map;
+ *pm != NULL;
+ pm = &(*pm)->next)
+ if ((*pm)->p_type == PT_PHDR)
+ break;
+
+ options_segment = bfd_zalloc (abfd,
+ sizeof (struct elf_segment_map));
+ options_segment->next = *pm;
+ options_segment->p_type = PT_MIPS_OPTIONS;
+ options_segment->p_flags = PF_R;
+ options_segment->p_flags_valid = true;
+ options_segment->count = 1;
+ options_segment->sections[0] = s;
+ *pm = options_segment;
+ }
+ }
+ else
+ {
+ if (IRIX_COMPAT (abfd) == ict_irix5)
+ {
+ /* If there are .dynamic and .mdebug sections, we make a room
+ for the RTPROC header. FIXME: Rewrite without section names. */
+ if (bfd_get_section_by_name (abfd, ".interp") == NULL
+ && bfd_get_section_by_name (abfd, ".dynamic") != NULL
+ && bfd_get_section_by_name (abfd, ".mdebug") != NULL)
+ {
+ for (m = elf_tdata (abfd)->segment_map; m != NULL; m = m->next)
+ if (m->p_type == PT_MIPS_RTPROC)
+ break;
+ if (m == NULL)
+ {
+ m = (struct elf_segment_map *) bfd_zalloc (abfd, sizeof *m);
+ if (m == NULL)
+ return false;
+
+ m->p_type = PT_MIPS_RTPROC;
+
+ s = bfd_get_section_by_name (abfd, ".rtproc");
+ if (s == NULL)
+ {
+ m->count = 0;
+ m->p_flags = 0;
+ m->p_flags_valid = 1;
+ }
+ else
+ {
+ m->count = 1;
+ m->sections[0] = s;
+ }
- m->p_type = PT_MIPS_RTPROC;
+ /* We want to put it after the DYNAMIC segment. */
+ pm = &elf_tdata (abfd)->segment_map;
+ while (*pm != NULL && (*pm)->p_type != PT_DYNAMIC)
+ pm = &(*pm)->next;
+ if (*pm != NULL)
+ pm = &(*pm)->next;
- s = bfd_get_section_by_name (abfd, ".rtproc");
- if (s == NULL)
+ m->next = *pm;
+ *pm = m;
+ }
+ }
+ }
+ /* On Irix 5, the PT_DYNAMIC segment includes the .dynamic,
+ .dynstr, .dynsym, and .hash sections, and everything in
+ between. */
+ for (pm = &elf_tdata (abfd)->segment_map; *pm != NULL;
+ pm = &(*pm)->next)
+ if ((*pm)->p_type == PT_DYNAMIC)
+ break;
+ m = *pm;
+ if (IRIX_COMPAT (abfd) == ict_none)
+ {
+ /* For a normal mips executable the permissions for the PT_DYNAMIC
+ segment are read, write and execute. We do that here since
+ the code in elf.c sets only the read permission. This matters
+ sometimes for the dynamic linker. */
+ if (bfd_get_section_by_name (abfd, ".dynamic") != NULL)
{
- m->count = 0;
- m->p_flags = 0;
+ m->p_flags = PF_R | PF_W | PF_X;
m->p_flags_valid = 1;
}
- else
+ }
+ if (m != NULL
+ && m->count == 1 && strcmp (m->sections[0]->name, ".dynamic") == 0)
+ {
+ static const char *sec_names[] = {
+ ".dynamic", ".dynstr", ".dynsym", ".hash"
+ };
+ bfd_vma low, high;
+ unsigned int i, c;
+ struct elf_segment_map *n;
+
+ low = 0xffffffff;
+ high = 0;
+ for (i = 0; i < sizeof sec_names / sizeof sec_names[0]; i++)
{
- m->count = 1;
- m->sections[0] = s;
+ s = bfd_get_section_by_name (abfd, sec_names[i]);
+ if (s != NULL && (s->flags & SEC_LOAD) != 0)
+ {
+ bfd_size_type sz;
+
+ if (low > s->vma)
+ low = s->vma;
+ sz = s->_cooked_size;
+ if (sz == 0)
+ sz = s->_raw_size;
+ if (high < s->vma + sz)
+ high = s->vma + sz;
+ }
}
- /* We want to put it after the DYNAMIC segment. */
- pm = &elf_tdata (abfd)->segment_map;
- while (*pm != NULL && (*pm)->p_type != PT_DYNAMIC)
- pm = &(*pm)->next;
- if (*pm != NULL)
- pm = &(*pm)->next;
-
- m->next = *pm;
- *pm = m;
- }
- }
+ c = 0;
+ for (s = abfd->sections; s != NULL; s = s->next)
+ if ((s->flags & SEC_LOAD) != 0
+ && s->vma >= low
+ && ((s->vma
+ + (s->_cooked_size !=
+ 0 ? s->_cooked_size : s->_raw_size)) <= high))
+ ++c;
+
+ n = ((struct elf_segment_map *)
+ bfd_zalloc (abfd, sizeof *n + (c - 1) * sizeof (asection *)));
+ if (n == NULL)
+ return false;
+ *n = *m;
+ n->count = c;
- /* On Irix 5, the PT_DYNAMIC segment includes the .dynamic, .dynstr,
- .dynsym, and .hash sections, and everything in between. */
- for (pm = &elf_tdata (abfd)->segment_map; *pm != NULL; pm = &(*pm)->next)
- if ((*pm)->p_type == PT_DYNAMIC)
- break;
- m = *pm;
- if (m != NULL
- && m->count == 1
- && strcmp (m->sections[0]->name, ".dynamic") == 0)
- {
- static const char *sec_names[] =
- { ".dynamic", ".dynstr", ".dynsym", ".hash" };
- bfd_vma low, high;
- unsigned int i, c;
- struct elf_segment_map *n;
-
- low = 0xffffffff;
- high = 0;
- for (i = 0; i < sizeof sec_names / sizeof sec_names[0]; i++)
- {
- s = bfd_get_section_by_name (abfd, sec_names[i]);
- if (s != NULL && (s->flags & SEC_LOAD) != 0)
+ i = 0;
+ for (s = abfd->sections; s != NULL; s = s->next)
{
- bfd_size_type sz;
-
- if (low > s->vma)
- low = s->vma;
- sz = s->_cooked_size;
- if (sz == 0)
- sz = s->_raw_size;
- if (high < s->vma + sz)
- high = s->vma + sz;
+ if ((s->flags & SEC_LOAD) != 0
+ && s->vma >= low
+ && ((s->vma
+ + (s->_cooked_size != 0 ?
+ s->_cooked_size : s->_raw_size)) <= high))
+ {
+ n->sections[i] = s;
+ ++i;
+ }
}
- }
-
- c = 0;
- for (s = abfd->sections; s != NULL; s = s->next)
- if ((s->flags & SEC_LOAD) != 0
- && s->vma >= low
- && ((s->vma
- + (s->_cooked_size != 0 ? s->_cooked_size : s->_raw_size))
- <= high))
- ++c;
-
- n = ((struct elf_segment_map *)
- bfd_zalloc (abfd, sizeof *n + (c - 1) * sizeof (asection *)));
- if (n == NULL)
- return false;
- *n = *m;
- n->count = c;
- i = 0;
- for (s = abfd->sections; s != NULL; s = s->next)
- {
- if ((s->flags & SEC_LOAD) != 0
- && s->vma >= low
- && ((s->vma
- + (s->_cooked_size != 0 ? s->_cooked_size : s->_raw_size))
- <= high))
- {
- n->sections[i] = s;
- ++i;
- }
+ *pm = n;
}
-
- *pm = n;
}
return true;
long reserved;
struct exception_info *exception_info;/* pointer to exception array */
} RPDR, *pRPDR;
-#define cbRPDR sizeof(RPDR)
+#define cbRPDR sizeof (RPDR)
#define rpdNil ((pRPDR) 0)
/* Swap RPDR (runtime procedure table entry) for output. */
char *ext_hdr = NULL;
swap = get_elf_backend_data (abfd)->elf_backend_ecoff_debug_swap;
- memset (debug, 0, sizeof(*debug));
+ memset (debug, 0, sizeof (*debug));
ext_hdr = (char *) bfd_malloc ((size_t) swap->external_hdr_size);
if (ext_hdr == NULL && swap->external_hdr_size != 0)
\f
/* MIPS ELF local labels start with '$', not 'L'. */
-/*ARGSUSED*/
static boolean
mips_elf_is_local_label_name (abfd, name)
bfd *abfd;
/* MIPS ELF uses a special find_nearest_line routine in order the
handle the ECOFF debugging information. */
-struct mips_elf_find_line
-{
+struct mips_elf_find_line {
struct ecoff_debug_info d;
struct ecoff_find_line i;
};
if (_bfd_dwarf2_find_nearest_line (abfd, section, symbols, offset,
filename_ptr, functionname_ptr,
- line_ptr))
+ line_ptr,
+ ABI_64_P (abfd) ? 8 : 0))
return true;
msec = bfd_get_section_by_name (abfd, ".mdebug");
#define CALL_STUB ".mips16.call."
#define CALL_FP_STUB ".mips16.call.fp."
-/* The MIPS ELF linker needs additional information for each symbol in
- the global hash table. */
-
-struct mips_elf_link_hash_entry
-{
- struct elf_link_hash_entry root;
-
- /* External symbol information. */
- EXTR esym;
-
- /* Number of MIPS_32 or MIPS_REL32 relocs against this symbol. */
- unsigned int mips_32_relocs;
-
- /* If there is a stub that 32 bit functions should use to call this
- 16 bit function, this points to the section containing the stub. */
- asection *fn_stub;
-
- /* Whether we need the fn_stub; this is set if this symbol appears
- in any relocs other than a 16 bit call. */
- boolean need_fn_stub;
-
- /* If there is a stub that 16 bit functions should use to call this
- 32 bit function, this points to the section containing the stub. */
- asection *call_stub;
-
- /* This is like the call_stub field, but it is used if the function
- being called returns a floating point value. */
- asection *call_fp_stub;
-};
-
/* MIPS ELF linker hash table. */
-struct mips_elf_link_hash_table
-{
+struct mips_elf_link_hash_table {
struct elf_link_hash_table root;
#if 0
/* We no longer use this. */
/* The size of the .compact_rel section (if SGI_COMPAT). */
bfd_size_type compact_rel_size;
/* This flag indicates that the value of DT_MIPS_RLD_MAP dynamic
- entry is set to the address of __rld_obj_head as in Irix 5. */
+ entry is set to the address of __rld_obj_head as in Irix 5. */
boolean use_rld_obj_head;
/* This is the value of the __rld_map or __rld_obj_head symbol. */
bfd_vma rld_value;
- /* This is set if we see any mips16 stub sections. */
+ /* This is set if we see any mips16 stub sections. */
boolean mips16_stubs_seen;
};
/* We use -2 as a marker to indicate that the information has
not been set. -1 means there is no associated ifd. */
ret->esym.ifd = -2;
- ret->mips_32_relocs = 0;
+ ret->possibly_dynamic_relocs = 0;
+ ret->min_dyn_reloc_index = 0;
ret->fn_stub = NULL;
ret->need_fn_stub = false;
ret->call_stub = NULL;
return (struct bfd_hash_entry *) ret;
}
+void
+_bfd_mips_elf_hide_symbol (info, h)
+ struct bfd_link_info *info;
+ struct mips_elf_link_hash_entry *h;
+{
+ bfd *dynobj;
+ asection *got;
+ struct mips_got_info *g;
+ dynobj = elf_hash_table (info)->dynobj;
+ got = bfd_get_section_by_name (dynobj, ".got");
+ g = (struct mips_got_info *) elf_section_data (got)->tdata;
+
+ h->root.elf_link_hash_flags &= ~ELF_LINK_HASH_NEEDS_PLT;
+ h->root.plt.offset = (bfd_vma) -1;
+ h->root.dynindx = -1;
+
+ /* FIXME: Do we allocate too much GOT space here? */
+ g->local_gotno++;
+ got->_raw_size += MIPS_ELF_GOT_SIZE (dynobj);
+}
+
/* Create a MIPS ELF linker hash table. */
-static struct bfd_link_hash_table *
-mips_elf_link_hash_table_create (abfd)
+struct bfd_link_hash_table *
+_bfd_mips_elf_link_hash_table_create (abfd)
bfd *abfd;
{
struct mips_elf_link_hash_table *ret;
/* Hook called by the linker routine which adds symbols from an object
file. We must handle the special MIPS section numbers here. */
-/*ARGSUSED*/
-static boolean
-mips_elf_add_symbol_hook (abfd, info, sym, namep, flagsp, secp, valp)
+boolean
+_bfd_mips_elf_add_symbol_hook (abfd, info, sym, namep, flagsp, secp, valp)
bfd *abfd;
struct bfd_link_info *info;
const Elf_Internal_Sym *sym;
const char **namep;
- flagword *flagsp;
+ flagword *flagsp ATTRIBUTE_UNUSED;
asection **secp;
bfd_vma *valp;
{
case SHN_COMMON:
/* Common symbols less than the GP size are automatically
treated as SHN_MIPS_SCOMMON symbols. */
- if (sym->st_size > elf_gp_size (abfd))
+ if (sym->st_size > elf_gp_size (abfd)
+ || IRIX_COMPAT (abfd) == ict_irix6)
break;
/* Fall through. */
case SHN_MIPS_SCOMMON:
case SHN_MIPS_TEXT:
/* This section is used in a shared object. */
- if (mips_elf_text_section_ptr == NULL)
+ if (elf_tdata (abfd)->elf_text_section == NULL)
{
+ asymbol *elf_text_symbol;
+ asection *elf_text_section;
+
+ elf_text_section = bfd_zalloc (abfd, sizeof (asection));
+ if (elf_text_section == NULL)
+ return false;
+
+ elf_text_symbol = bfd_zalloc (abfd, sizeof (asymbol));
+ if (elf_text_symbol == NULL)
+ return false;
+
/* Initialize the section. */
- mips_elf_text_section.name = ".text";
- mips_elf_text_section.flags = SEC_NO_FLAGS;
- mips_elf_text_section.output_section = NULL;
- mips_elf_text_section.symbol = &mips_elf_text_symbol;
- mips_elf_text_section.symbol_ptr_ptr = &mips_elf_text_symbol_ptr;
- mips_elf_text_symbol.name = ".text";
- mips_elf_text_symbol.flags = BSF_SECTION_SYM;
- mips_elf_text_symbol.section = &mips_elf_text_section;
- mips_elf_text_symbol_ptr = &mips_elf_text_symbol;
- mips_elf_text_section_ptr = &mips_elf_text_section;
+
+ elf_tdata (abfd)->elf_text_section = elf_text_section;
+ elf_tdata (abfd)->elf_text_symbol = elf_text_symbol;
+
+ elf_text_section->symbol = elf_text_symbol;
+ elf_text_section->symbol_ptr_ptr = &elf_tdata (abfd)->elf_text_symbol;
+
+ elf_text_section->name = ".text";
+ elf_text_section->flags = SEC_NO_FLAGS;
+ elf_text_section->output_section = NULL;
+ elf_text_section->owner = abfd;
+ elf_text_symbol->name = ".text";
+ elf_text_symbol->flags = BSF_SECTION_SYM | BSF_DYNAMIC;
+ elf_text_symbol->section = elf_text_section;
}
/* This code used to do *secp = bfd_und_section_ptr if
info->shared. I don't know why, and that doesn't make sense,
so I took it out. */
- *secp = mips_elf_text_section_ptr;
+ *secp = elf_tdata (abfd)->elf_text_section;
break;
case SHN_MIPS_ACOMMON:
/* Fall through. XXX Can we treat this as allocated data? */
case SHN_MIPS_DATA:
/* This section is used in a shared object. */
- if (mips_elf_data_section_ptr == NULL)
+ if (elf_tdata (abfd)->elf_data_section == NULL)
{
+ asymbol *elf_data_symbol;
+ asection *elf_data_section;
+
+ elf_data_section = bfd_zalloc (abfd, sizeof (asection));
+ if (elf_data_section == NULL)
+ return false;
+
+ elf_data_symbol = bfd_zalloc (abfd, sizeof (asymbol));
+ if (elf_data_symbol == NULL)
+ return false;
+
/* Initialize the section. */
- mips_elf_data_section.name = ".data";
- mips_elf_data_section.flags = SEC_NO_FLAGS;
- mips_elf_data_section.output_section = NULL;
- mips_elf_data_section.symbol = &mips_elf_data_symbol;
- mips_elf_data_section.symbol_ptr_ptr = &mips_elf_data_symbol_ptr;
- mips_elf_data_symbol.name = ".data";
- mips_elf_data_symbol.flags = BSF_SECTION_SYM;
- mips_elf_data_symbol.section = &mips_elf_data_section;
- mips_elf_data_symbol_ptr = &mips_elf_data_symbol;
- mips_elf_data_section_ptr = &mips_elf_data_section;
+
+ elf_tdata (abfd)->elf_data_section = elf_data_section;
+ elf_tdata (abfd)->elf_data_symbol = elf_data_symbol;
+
+ elf_data_section->symbol = elf_data_symbol;
+ elf_data_section->symbol_ptr_ptr = &elf_tdata (abfd)->elf_data_symbol;
+
+ elf_data_section->name = ".data";
+ elf_data_section->flags = SEC_NO_FLAGS;
+ elf_data_section->output_section = NULL;
+ elf_data_section->owner = abfd;
+ elf_data_symbol->name = ".data";
+ elf_data_symbol->flags = BSF_SECTION_SYM | BSF_DYNAMIC;
+ elf_data_symbol->section = elf_data_section;
}
/* This code used to do *secp = bfd_und_section_ptr if
info->shared. I don't know why, and that doesn't make sense,
so I took it out. */
- *secp = mips_elf_data_section_ptr;
+ *secp = elf_tdata (abfd)->elf_data_section;
break;
case SHN_MIPS_SUNDEFINED:
get_elf_backend_data (abfd)->collect,
(struct bfd_link_hash_entry **) &h)))
return false;
- h->elf_link_hash_flags &=~ ELF_LINK_NON_ELF;
+ h->elf_link_hash_flags &= ~ELF_LINK_NON_ELF;
h->elf_link_hash_flags |= ELF_LINK_HASH_DEF_REGULAR;
h->type = STT_OBJECT;
/* Structure used to pass information to mips_elf_output_extsym. */
-struct extsym_info
-{
+struct extsym_info {
bfd *abfd;
struct bfd_link_info *info;
struct ecoff_debug_info *debug;
h->esym.asym.value = 0;
h->esym.asym.st = stGlobal;
- if (SGI_COMPAT (einfo->abfd)
- && (h->root.root.type == bfd_link_hash_undefined
- || h->root.root.type == bfd_link_hash_undefweak))
+ if (h->root.root.type == bfd_link_hash_undefined
+ || h->root.root.type == bfd_link_hash_undefweak)
{
const char *name;
the .mdebug sections. We need to merge all instances of these
sections together, not write them all out sequentially. */
-static boolean
-mips_elf_final_link (abfd, info)
+boolean
+_bfd_mips_elf_final_link (abfd, info)
bfd *abfd;
struct bfd_link_info *info;
{
= get_elf_backend_data (abfd)->elf_backend_ecoff_debug_swap;
HDRR *symhdr = &debug.symbolic_header;
PTR mdebug_handle = NULL;
+ asection *s;
+ EXTR esym;
+ bfd_vma last;
+ unsigned int i;
+ static const char * const name[] = {
+ ".text", ".init", ".fini", ".data",
+ ".rodata", ".sdata", ".sbss", ".bss"
+ };
+ static const int sc[] = {
+ scText, scInit, scFini, scData,
+ scRData, scSData, scSBss, scBss
+ };
+
+ /* If all the things we linked together were PIC, but we're
+ producing an executable (rather than a shared object), then the
+ resulting file is CPIC (i.e., it calls PIC code.) */
+ if (!info->shared
+ && !info->relocateable
+ && elf_elfheader (abfd)->e_flags & EF_MIPS_PIC)
+ {
+ elf_elfheader (abfd)->e_flags &= ~EF_MIPS_PIC;
+ elf_elfheader (abfd)->e_flags |= EF_MIPS_CPIC;
+ }
- /* Drop the .options section, since it has special semantics which I
- haven't bothered to figure out. */
- for (secpp = &abfd->sections; *secpp != NULL; secpp = &(*secpp)->next)
+ /* We'd carefully arranged the dynamic symbol indices, and then the
+ generic size_dynamic_sections renumbered them out from under us.
+ Rather than trying somehow to prevent the renumbering, just do
+ the sort again. */
+ if (elf_hash_table (info)->dynamic_sections_created)
{
- if (strcmp ((*secpp)->name, ".options") == 0)
- {
- for (p = (*secpp)->link_order_head; p != NULL; p = p->next)
- if (p->type == bfd_indirect_link_order)
- p->u.indirect.section->flags &=~ SEC_HAS_CONTENTS;
- (*secpp)->link_order_head = NULL;
- *secpp = (*secpp)->next;
- --abfd->section_count;
- break;
- }
+ bfd *dynobj;
+ asection *got;
+ struct mips_got_info *g;
+
+ /* When we resort, we must tell mips_elf_sort_hash_table what
+ the lowest index it may use is. That's the number of section
+ symbols we're going to add. The generic ELF linker only
+ adds these symbols when building a shared object. Note that
+ we count the sections after (possibly) removing the .options
+ section above. */
+ if (!mips_elf_sort_hash_table (info, (info->shared
+ ? bfd_count_sections (abfd) + 1
+ : 1)))
+ return false;
+
+ /* Make sure we didn't grow the global .got region. */
+ dynobj = elf_hash_table (info)->dynobj;
+ got = bfd_get_section_by_name (dynobj, ".got");
+ g = (struct mips_got_info *) elf_section_data (got)->tdata;
+
+ if (g->global_gotsym != NULL)
+ BFD_ASSERT ((elf_hash_table (info)->dynsymcount
+ - g->global_gotsym->dynindx)
+ <= g->global_gotno);
}
+ /* On IRIX5, we omit the .options section. On IRIX6, however, we
+ include it, even though we don't process it quite right. (Some
+ entries are supposed to be merged.) Empirically, we seem to be
+ better off including it then not. */
+ if (IRIX_COMPAT (abfd) == ict_irix5 || IRIX_COMPAT (abfd) == ict_none)
+ for (secpp = &abfd->sections; *secpp != NULL; secpp = &(*secpp)->next)
+ {
+ if (strcmp ((*secpp)->name, MIPS_ELF_OPTIONS_SECTION_NAME (abfd)) == 0)
+ {
+ for (p = (*secpp)->link_order_head; p != NULL; p = p->next)
+ if (p->type == bfd_indirect_link_order)
+ p->u.indirect.section->flags &= ~SEC_HAS_CONTENTS;
+ (*secpp)->link_order_head = NULL;
+ *secpp = (*secpp)->next;
+ --abfd->section_count;
+
+ break;
+ }
+ }
+
/* Get a value for the GP register. */
if (elf_gp (abfd) == 0)
{
{
bfd_vma lo;
- /* Make up a value. */
+ /* Find the GP-relative section with the lowest offset. */
lo = (bfd_vma) -1;
for (o = abfd->sections; o != (asection *) NULL; o = o->next)
- {
- if (o->vma < lo
- && (strcmp (o->name, ".sbss") == 0
- || strcmp (o->name, ".sdata") == 0
- || strcmp (o->name, ".lit4") == 0
- || strcmp (o->name, ".lit8") == 0))
- lo = o->vma;
- }
+ if (o->vma < lo
+ && (elf_section_data (o)->this_hdr.sh_flags & SHF_MIPS_GPREL))
+ lo = o->vma;
+
+ /* And calculate GP relative to that. */
elf_gp (abfd) = lo + ELF_MIPS_GP_OFFSET (abfd);
}
else
/* Hack: reset the SEC_HAS_CONTENTS flag so that
elf_link_input_bfd ignores this section. */
- input_section->flags &=~ SEC_HAS_CONTENTS;
+ input_section->flags &= ~SEC_HAS_CONTENTS;
}
/* Size has been set in mips_elf_always_size_sections */
if (mdebug_handle == (PTR) NULL)
return false;
- if (SGI_COMPAT (abfd))
+ esym.jmptbl = 0;
+ esym.cobol_main = 0;
+ esym.weakext = 0;
+ esym.reserved = 0;
+ esym.ifd = ifdNil;
+ esym.asym.iss = issNil;
+ esym.asym.st = stLocal;
+ esym.asym.reserved = 0;
+ esym.asym.index = indexNil;
+ last = 0;
+ for (i = 0; i < 8; i++)
{
- asection *s;
- EXTR esym;
- bfd_vma last;
- unsigned int i;
- static const char * const name[] =
- { ".text", ".init", ".fini", ".data",
- ".rodata", ".sdata", ".sbss", ".bss" };
- static const int sc[] = { scText, scInit, scFini, scData,
- scRData, scSData, scSBss, scBss };
-
- esym.jmptbl = 0;
- esym.cobol_main = 0;
- esym.weakext = 0;
- esym.reserved = 0;
- esym.ifd = ifdNil;
- esym.asym.iss = issNil;
- esym.asym.st = stLocal;
- esym.asym.reserved = 0;
- esym.asym.index = indexNil;
- last = 0;
- for (i = 0; i < 8; i++)
+ esym.asym.sc = sc[i];
+ s = bfd_get_section_by_name (abfd, name[i]);
+ if (s != NULL)
{
- esym.asym.sc = sc[i];
- s = bfd_get_section_by_name (abfd, name[i]);
- if (s != NULL)
- {
- esym.asym.value = s->vma;
- last = s->vma + s->_raw_size;
- }
- else
- esym.asym.value = last;
-
- if (! bfd_ecoff_debug_one_external (abfd, &debug, swap,
- name[i], &esym))
- return false;
+ esym.asym.value = s->vma;
+ last = s->vma + s->_raw_size;
}
+ else
+ esym.asym.value = last;
+ if (!bfd_ecoff_debug_one_external (abfd, &debug, swap,
+ name[i], &esym))
+ return false;
}
for (p = o->link_order_head;
/* Hack: reset the SEC_HAS_CONTENTS flag so that
elf_link_input_bfd ignores this section. */
- input_section->flags &=~ SEC_HAS_CONTENTS;
+ input_section->flags &= ~SEC_HAS_CONTENTS;
}
if (SGI_COMPAT (abfd) && info->shared)
/* Hack: reset the SEC_HAS_CONTENTS flag so that
elf_link_input_bfd ignores this section. */
- input_section->flags &=~ SEC_HAS_CONTENTS;
+ input_section->flags &= ~SEC_HAS_CONTENTS;
}
/* Skip this section later on (I don't think this
/* Hack: reset the SEC_HAS_CONTENTS flag so that
elf_link_input_bfd ignores this section. */
- input_section->flags &=~ SEC_HAS_CONTENTS;
+ input_section->flags &= ~SEC_HAS_CONTENTS;
}
/* The table must be sorted by -G value. */
}
/* Invoke the regular ELF backend linker to do all the work. */
- if (! bfd_elf32_bfd_final_link (abfd, info))
+ if (ABI_64_P (abfd))
+ {
+#ifdef BFD64
+ if (!bfd_elf64_bfd_final_link (abfd, info))
+ return false;
+#else
+ abort ();
+ return false;
+#endif /* BFD64 */
+ }
+ else if (!bfd_elf32_bfd_final_link (abfd, info))
return false;
/* Now write out the computed sections. */
return true;
}
-/* Handle a MIPS ELF HI16 reloc. */
+/* This function is called via qsort() to sort the dynamic relocation
+ entries by increasing r_symndx value. */
-static void
-mips_elf_relocate_hi16 (input_bfd, relhi, rello, contents, addend)
- bfd *input_bfd;
- Elf_Internal_Rela *relhi;
- Elf_Internal_Rela *rello;
- bfd_byte *contents;
- bfd_vma addend;
+static int
+sort_dynamic_relocs (arg1, arg2)
+ const PTR arg1;
+ const PTR arg2;
{
- bfd_vma insn;
- bfd_vma addlo;
+ const Elf32_External_Rel *ext_reloc1 = (const Elf32_External_Rel *) arg1;
+ const Elf32_External_Rel *ext_reloc2 = (const Elf32_External_Rel *) arg2;
- insn = bfd_get_32 (input_bfd, contents + relhi->r_offset);
+ Elf_Internal_Rel int_reloc1;
+ Elf_Internal_Rel int_reloc2;
- addlo = bfd_get_32 (input_bfd, contents + rello->r_offset);
- addlo &= 0xffff;
+ bfd_elf32_swap_reloc_in (reldyn_sorting_bfd, ext_reloc1, &int_reloc1);
+ bfd_elf32_swap_reloc_in (reldyn_sorting_bfd, ext_reloc2, &int_reloc2);
- addend += ((insn & 0xffff) << 16) + addlo;
+ return (ELF32_R_SYM (int_reloc1.r_info) - ELF32_R_SYM (int_reloc2.r_info));
+}
- if ((addlo & 0x8000) != 0)
- addend -= 0x10000;
- if ((addend & 0x8000) != 0)
- addend += 0x10000;
+/* Returns the GOT section for ABFD. */
- bfd_put_32 (input_bfd,
- (insn & 0xffff0000) | ((addend >> 16) & 0xffff),
- contents + relhi->r_offset);
+static asection *
+mips_elf_got_section (abfd)
+ bfd *abfd;
+{
+ return bfd_get_section_by_name (abfd, ".got");
}
-/* Handle a MIPS ELF local GOT16 reloc. */
+/* Returns the GOT information associated with the link indicated by
+ INFO. If SGOTP is non-NULL, it is filled in with the GOT
+ section. */
-static boolean
-mips_elf_relocate_got_local (output_bfd, input_bfd, sgot, relhi, rello,
- contents, addend)
- bfd *output_bfd;
- bfd *input_bfd;
- asection *sgot;
- Elf_Internal_Rela *relhi;
- Elf_Internal_Rela *rello;
- bfd_byte *contents;
- bfd_vma addend;
+static struct mips_got_info *
+mips_elf_got_info (abfd, sgotp)
+ bfd *abfd;
+ asection **sgotp;
{
- unsigned int assigned_gotno;
- unsigned int i;
- bfd_vma insn;
- bfd_vma addlo;
- bfd_vma address;
- bfd_vma hipage;
- bfd_byte *got_contents;
+ asection *sgot;
struct mips_got_info *g;
- insn = bfd_get_32 (input_bfd, contents + relhi->r_offset);
+ sgot = mips_elf_got_section (abfd);
+ BFD_ASSERT (sgot != NULL);
+ BFD_ASSERT (elf_section_data (sgot) != NULL);
+ g = (struct mips_got_info *) elf_section_data (sgot)->tdata;
+ BFD_ASSERT (g != NULL);
- addlo = bfd_get_32 (input_bfd, contents + rello->r_offset);
- addlo &= 0xffff;
+ if (sgotp)
+ *sgotp = sgot;
+ return g;
+}
- addend += ((insn & 0xffff) << 16) + addlo;
+/* Return whether a relocation is against a local symbol. */
- if ((addlo & 0x8000) != 0)
- addend -= 0x10000;
- if ((addend & 0x8000) != 0)
- addend += 0x10000;
+static boolean
+mips_elf_local_relocation_p (input_bfd, relocation, local_sections,
+ check_forced)
+ bfd *input_bfd;
+ const Elf_Internal_Rela *relocation;
+ asection **local_sections;
+ boolean check_forced;
+{
+ unsigned long r_symndx;
+ Elf_Internal_Shdr *symtab_hdr;
+ struct mips_elf_link_hash_entry *h;
+ size_t extsymoff;
- /* Get a got entry representing requested hipage. */
- BFD_ASSERT (elf_section_data (sgot) != NULL);
- g = (struct mips_got_info *) elf_section_data (sgot)->tdata;
- BFD_ASSERT (g != NULL);
+ r_symndx = ELF32_R_SYM (relocation->r_info);
+ symtab_hdr = &elf_tdata (input_bfd)->symtab_hdr;
+ extsymoff = (elf_bad_symtab (input_bfd)) ? 0 : symtab_hdr->sh_info;
- assigned_gotno = g->assigned_gotno;
- got_contents = sgot->contents;
- hipage = addend & 0xffff0000;
+ if (r_symndx < extsymoff)
+ return true;
+ if (elf_bad_symtab (input_bfd) && local_sections[r_symndx] != NULL)
+ return true;
- for (i = MIPS_RESERVED_GOTNO; i < assigned_gotno; i++)
+ if (check_forced)
{
- address = bfd_get_32 (input_bfd, got_contents + i * 4);
- if (hipage == (address & 0xffff0000))
- break;
+ /* Look up the hash table to check whether the symbol
+ was forced local. */
+ h = (struct mips_elf_link_hash_entry *)
+ elf_sym_hashes (input_bfd) [r_symndx - extsymoff];
+ /* Find the real hash-table entry for this symbol. */
+ while (h->root.root.type == bfd_link_hash_indirect
+ || h->root.root.type == bfd_link_hash_warning)
+ h = (struct mips_elf_link_hash_entry *) h->root.root.u.i.link;
+ if ((h->root.elf_link_hash_flags & ELF_LINK_FORCED_LOCAL) != 0)
+ return true;
}
- if (i == assigned_gotno)
- {
- if (assigned_gotno >= g->local_gotno)
- {
- (*_bfd_error_handler)
- (_("more got entries are needed for hipage relocations"));
- bfd_set_error (bfd_error_bad_value);
- return false;
- }
+ return false;
+}
- bfd_put_32 (input_bfd, hipage, got_contents + assigned_gotno * 4);
- ++g->assigned_gotno;
- }
+/* Sign-extend VALUE, which has the indicated number of BITS. */
- i = - ELF_MIPS_GP_OFFSET (output_bfd) + i * 4;
- bfd_put_32 (input_bfd, (insn & 0xffff0000) | (i & 0xffff),
- contents + relhi->r_offset);
+static bfd_vma
+mips_elf_sign_extend (value, bits)
+ bfd_vma value;
+ int bits;
+{
+ if (value & ((bfd_vma) 1 << (bits - 1)))
+ /* VALUE is negative. */
+ value |= ((bfd_vma) - 1) << bits;
- return true;
+ return value;
}
-/* Handle MIPS ELF CALL16 reloc and global GOT16 reloc. */
+/* Return non-zero if the indicated VALUE has overflowed the maximum
+ range expressable by a signed number with the indicated number of
+ BITS. */
-static void
-mips_elf_relocate_global_got (input_bfd, rel, contents, offset)
- bfd *input_bfd;
- Elf_Internal_Rela *rel;
- bfd_byte *contents;
- bfd_vma offset;
+static boolean
+mips_elf_overflow_p (value, bits)
+ bfd_vma value;
+ int bits;
{
- bfd_vma insn;
+ bfd_signed_vma svalue = (bfd_signed_vma) value;
+
+ if (svalue > (1 << (bits - 1)) - 1)
+ /* The value is too big. */
+ return true;
+ else if (svalue < -(1 << (bits - 1)))
+ /* The value is too small. */
+ return true;
- insn = bfd_get_32 (input_bfd, contents + rel->r_offset);
- bfd_put_32 (input_bfd,
- (insn & 0xffff0000) | (offset & 0xffff),
- contents + rel->r_offset);
+ /* All is well. */
+ return false;
}
-/* Relocate a MIPS ELF section. */
+/* Calculate the %high function. */
-static boolean
-mips_elf_relocate_section (output_bfd, info, input_bfd, input_section,
- contents, relocs, local_syms, local_sections)
- bfd *output_bfd;
- struct bfd_link_info *info;
- bfd *input_bfd;
- asection *input_section;
- bfd_byte *contents;
- Elf_Internal_Rela *relocs;
- Elf_Internal_Sym *local_syms;
- asection **local_sections;
+static bfd_vma
+mips_elf_high (value)
+ bfd_vma value;
{
- Elf_Internal_Shdr *symtab_hdr;
- size_t locsymcount;
- size_t extsymoff;
- asection *sgot, *sreloc, *scpt;
- bfd *dynobj;
- bfd_vma gp;
- Elf_Internal_Rela *rel;
- Elf_Internal_Rela *relend;
- struct mips_got_info *g;
+ return ((value + (bfd_vma) 0x8000) >> 16) & 0xffff;
+}
- dynobj = elf_hash_table (info)->dynobj;
- symtab_hdr = &elf_tdata (input_bfd)->symtab_hdr;
+/* Calculate the %higher function. */
- sgot = NULL;
- sreloc = NULL;
- if (dynobj == NULL || ! SGI_COMPAT (output_bfd))
- scpt = NULL;
- else
- scpt = bfd_get_section_by_name (dynobj, ".compact_rel");
- g = NULL;
+static bfd_vma
+mips_elf_higher (value)
+ bfd_vma value ATTRIBUTE_UNUSED;
+{
+#ifdef BFD64
+ return ((value + (bfd_vma) 0x80008000) >> 32) & 0xffff;
+#else
+ abort ();
+ return (bfd_vma) -1;
+#endif
+}
- if (elf_bad_symtab (input_bfd))
- {
- locsymcount = symtab_hdr->sh_size / sizeof (Elf32_External_Sym);
- extsymoff = 0;
- }
- else
- {
- locsymcount = symtab_hdr->sh_info;
- extsymoff = symtab_hdr->sh_info;
- }
+/* Calculate the %highest function. */
- gp = _bfd_get_gp_value (output_bfd);
+static bfd_vma
+mips_elf_highest (value)
+ bfd_vma value ATTRIBUTE_UNUSED;
+{
+#ifdef BFD64
+ return ((value + (bfd_vma) 0x800080008000) >> 48) & 0xffff;
+#else
+ abort ();
+ return (bfd_vma) -1;
+#endif
+}
- rel = relocs;
- relend = relocs + input_section->reloc_count;
- for (; rel < relend; rel++)
- {
- int r_type;
- reloc_howto_type *howto;
- unsigned long r_symndx;
- bfd_vma addend;
- struct elf_link_hash_entry *h;
- asection *sec;
- Elf_Internal_Sym *sym;
- struct mips_elf_link_hash_entry *mh;
- int other;
- bfd_reloc_status_type r;
+/* Returns the GOT index for the global symbol indicated by H. */
- r_type = ELF32_R_TYPE (rel->r_info);
- if (r_type == R_MIPS_GNU_VTINHERIT
- || r_type == R_MIPS_GNU_VTENTRY)
- continue;
- if ((r_type < 0 || r_type >= (int) R_MIPS_max)
- && r_type != R_MIPS16_26
- && r_type != R_MIPS16_GPREL)
- {
- bfd_set_error (bfd_error_bad_value);
- return false;
- }
- if (r_type == R_MIPS16_26)
- howto = &elf_mips16_jump_howto;
- else if (r_type == R_MIPS16_GPREL)
- howto = &elf_mips16_gprel_howto;
- else
- howto = elf_mips_howto_table + r_type;
-
- if (dynobj != NULL
- && (r_type == R_MIPS_CALL16
- || r_type == R_MIPS_GOT16
- || r_type == R_MIPS_CALL_HI16
- || r_type == R_MIPS_CALL_LO16
- || r_type == R_MIPS_GOT_HI16
- || r_type == R_MIPS_GOT_LO16))
- {
- /* We need the .got section. */
- if (sgot == NULL)
- {
- sgot = bfd_get_section_by_name (dynobj, ".got");
- BFD_ASSERT (sgot != NULL);
- BFD_ASSERT (elf_section_data (sgot) != NULL);
- g = (struct mips_got_info *) elf_section_data (sgot)->tdata;
- BFD_ASSERT (g != NULL);
- }
- }
+static bfd_vma
+mips_elf_global_got_index (abfd, h)
+ bfd *abfd;
+ struct elf_link_hash_entry *h;
+{
+ bfd_vma index;
+ asection *sgot;
+ struct mips_got_info *g;
- r_symndx = ELF32_R_SYM (rel->r_info);
+ g = mips_elf_got_info (abfd, &sgot);
- /* Mix in the change in GP address for a GP relative reloc. */
- if (r_type != R_MIPS_GPREL16
- && r_type != R_MIPS_LITERAL
- && r_type != R_MIPS_GPREL32
- && r_type != R_MIPS16_GPREL)
- addend = 0;
- else
- {
- if (gp == 0)
- {
- if (! ((*info->callbacks->reloc_dangerous)
- (info,
- _("GP relative relocation when GP not defined"),
- input_bfd, input_section,
- rel->r_offset)))
- return false;
- /* Only give the error once per link. */
- gp = 4;
- _bfd_set_gp_value (output_bfd, gp);
- }
+ /* Once we determine the global GOT entry with the lowest dynamic
+ symbol table index, we must put all dynamic symbols with greater
+ indices into the GOT. That makes it easy to calculate the GOT
+ offset. */
+ BFD_ASSERT (h->dynindx >= g->global_gotsym->dynindx);
+ index = ((h->dynindx - g->global_gotsym->dynindx + g->local_gotno)
+ * MIPS_ELF_GOT_SIZE (abfd));
+ BFD_ASSERT (index < sgot->_raw_size);
- if (r_symndx < extsymoff
- || (elf_bad_symtab (input_bfd)
- && local_sections[r_symndx] != NULL))
- {
- /* This is a relocation against a section. The current
- addend in the instruction is the difference between
- INPUT_SECTION->vma and the GP value of INPUT_BFD. We
- must change this to be the difference between the
- final definition (which will end up in RELOCATION)
- and the GP value of OUTPUT_BFD (which is in GP). */
- addend = elf_gp (input_bfd) - gp;
- }
- else if (! info->relocateable)
- {
- /* We are doing a final link. The current addend in the
- instruction is simply the desired offset into the
- symbol (normally zero). We want the instruction to
- hold the difference between the final definition of
- the symbol (which will end up in RELOCATION) and the
- GP value of OUTPUT_BFD (which is in GP). */
- addend = - gp;
- }
- else
- {
- /* We are generating relocateable output, and we aren't
- going to define this symbol, so we just leave the
- instruction alone. */
- addend = 0;
- }
- }
+ return index;
+}
- h = NULL;
- sym = NULL;
- sec = NULL;
- if (info->relocateable)
+/* Returns the offset for the entry at the INDEXth position
+ in the GOT. */
+
+static bfd_vma
+mips_elf_got_offset_from_index (dynobj, output_bfd, index)
+ bfd *dynobj;
+ bfd *output_bfd;
+ bfd_vma index;
+{
+ asection *sgot;
+ bfd_vma gp;
+
+ sgot = mips_elf_got_section (dynobj);
+ gp = _bfd_get_gp_value (output_bfd);
+ return (sgot->output_section->vma + sgot->output_offset + index -
+ gp);
+}
+
+/* If H is a symbol that needs a global GOT entry, but has a dynamic
+ symbol table index lower than any we've seen to date, record it for
+ posterity. */
+
+static boolean
+mips_elf_record_global_got_symbol (h, info, g)
+ struct elf_link_hash_entry *h;
+ struct bfd_link_info *info;
+ struct mips_got_info *g ATTRIBUTE_UNUSED;
+{
+ /* A global symbol in the GOT must also be in the dynamic symbol
+ table. */
+ if (h->dynindx == -1
+ && !bfd_elf32_link_record_dynamic_symbol (info, h))
+ return false;
+
+ /* If we've already marked this entry as need GOT space, we don't
+ need to do it again. */
+ if (h->got.offset != (bfd_vma) - 1)
+ return true;
+
+ /* By setting this to a value other than -1, we are indicating that
+ there needs to be a GOT entry for H. */
+ h->got.offset = 0;
+
+ return true;
+}
+
+/* This structure is passed to mips_elf_sort_hash_table_f when sorting
+ the dynamic symbols. */
+
+struct mips_elf_hash_sort_data {
+ /* The symbol in the global GOT with the lowest dynamic symbol table
+ index. */
+ struct elf_link_hash_entry *low;
+ /* The least dynamic symbol table index corresponding to a symbol
+ with a GOT entry. */
+ long min_got_dynindx;
+ /* The greatest dynamic symbol table index not corresponding to a
+ symbol without a GOT entry. */
+ long max_non_got_dynindx;
+};
+
+/* If H needs a GOT entry, assign it the highest available dynamic
+ index. Otherwise, assign it the lowest available dynamic
+ index. */
+
+static boolean
+mips_elf_sort_hash_table_f (h, data)
+ struct mips_elf_link_hash_entry *h;
+ PTR data;
+{
+ struct mips_elf_hash_sort_data *hsd
+ = (struct mips_elf_hash_sort_data *) data;
+
+ /* Symbols without dynamic symbol table entries aren't interesting
+ at all. */
+ if (h->root.dynindx == -1)
+ return true;
+
+ if (h->root.got.offset != 0)
+ h->root.dynindx = hsd->max_non_got_dynindx++;
+ else
+ {
+ h->root.dynindx = --hsd->min_got_dynindx;
+ hsd->low = (struct elf_link_hash_entry *) h;
+ }
+
+ return true;
+}
+
+/* Sort the dynamic symbol table so that symbols that need GOT entries
+ appear towards the end. This reduces the amount of GOT space
+ required. MAX_LOCAL is used to set the number of local symbols
+ known to be in the dynamic symbol table. During
+ mips_elf_size_dynamic_sections, this value is 1. Afterward, the
+ section symbols are added and the count is higher. */
+
+static boolean
+mips_elf_sort_hash_table (info, max_local)
+ struct bfd_link_info *info;
+ unsigned long max_local;
+{
+ struct mips_elf_hash_sort_data hsd;
+ struct mips_got_info *g;
+ bfd *dynobj;
+
+ dynobj = elf_hash_table (info)->dynobj;
+
+ hsd.low = NULL;
+ hsd.min_got_dynindx = elf_hash_table (info)->dynsymcount;
+ hsd.max_non_got_dynindx = max_local;
+ mips_elf_link_hash_traverse (((struct mips_elf_link_hash_table *)
+ elf_hash_table (info)),
+ mips_elf_sort_hash_table_f,
+ &hsd);
+
+ /* There shoud have been enough room in the symbol table to
+ accomodate both the GOT and non-GOT symbols. */
+ BFD_ASSERT (hsd.max_non_got_dynindx <= hsd.min_got_dynindx);
+
+ /* Now we know which dynamic symbol has the lowest dynamic symbol
+ table index in the GOT. */
+ g = mips_elf_got_info (dynobj, NULL);
+ g->global_gotsym = hsd.low;
+
+ return true;
+}
+
+/* Create a local GOT entry for VALUE. Return the index of the entry,
+ or -1 if it could not be created. */
+
+static bfd_vma
+mips_elf_create_local_got_entry (abfd, g, sgot, value)
+ bfd *abfd;
+ struct mips_got_info *g;
+ asection *sgot;
+ bfd_vma value;
+{
+ if (g->assigned_gotno >= g->local_gotno)
+ {
+ /* We didn't allocate enough space in the GOT. */
+ (*_bfd_error_handler)
+ (_("not enough GOT space for local GOT entries"));
+ bfd_set_error (bfd_error_bad_value);
+ return (bfd_vma) -1;
+ }
+
+ MIPS_ELF_PUT_WORD (abfd, value,
+ (sgot->contents
+ + MIPS_ELF_GOT_SIZE (abfd) * g->assigned_gotno));
+ return MIPS_ELF_GOT_SIZE (abfd) * g->assigned_gotno++;
+}
+
+/* Returns the GOT offset at which the indicated address can be found.
+ If there is not yet a GOT entry for this value, create one. Returns
+ -1 if no satisfactory GOT offset can be found. */
+
+static bfd_vma
+mips_elf_local_got_index (abfd, info, value)
+ bfd *abfd;
+ struct bfd_link_info *info;
+ bfd_vma value;
+{
+ asection *sgot;
+ struct mips_got_info *g;
+ bfd_byte *entry;
+
+ g = mips_elf_got_info (elf_hash_table (info)->dynobj, &sgot);
+
+ /* Look to see if we already have an appropriate entry. */
+ for (entry = (sgot->contents
+ + MIPS_ELF_GOT_SIZE (abfd) * MIPS_RESERVED_GOTNO);
+ entry != sgot->contents + MIPS_ELF_GOT_SIZE (abfd) * g->assigned_gotno;
+ entry += MIPS_ELF_GOT_SIZE (abfd))
+ {
+ bfd_vma address = MIPS_ELF_GET_WORD (abfd, entry);
+ if (address == value)
+ return entry - sgot->contents;
+ }
+
+ return mips_elf_create_local_got_entry (abfd, g, sgot, value);
+}
+
+/* Find a GOT entry that is within 32KB of the VALUE. These entries
+ are supposed to be placed at small offsets in the GOT, i.e.,
+ within 32KB of GP. Return the index into the GOT for this page,
+ and store the offset from this entry to the desired address in
+ OFFSETP, if it is non-NULL. */
+
+static bfd_vma
+mips_elf_got_page (abfd, info, value, offsetp)
+ bfd *abfd;
+ struct bfd_link_info *info;
+ bfd_vma value;
+ bfd_vma *offsetp;
+{
+ asection *sgot;
+ struct mips_got_info *g;
+ bfd_byte *entry;
+ bfd_byte *last_entry;
+ bfd_vma index = 0;
+ bfd_vma address;
+
+ g = mips_elf_got_info (elf_hash_table (info)->dynobj, &sgot);
+
+ /* Look to see if we aleady have an appropriate entry. */
+ last_entry = sgot->contents + MIPS_ELF_GOT_SIZE (abfd) * g->assigned_gotno;
+ for (entry = (sgot->contents
+ + MIPS_ELF_GOT_SIZE (abfd) * MIPS_RESERVED_GOTNO);
+ entry != last_entry;
+ entry += MIPS_ELF_GOT_SIZE (abfd))
+ {
+ address = MIPS_ELF_GET_WORD (abfd, entry);
+
+ if (!mips_elf_overflow_p (value - address, 16))
{
- /* This is a relocateable link. We don't have to change
- anything, unless the reloc is against a section symbol,
- in which case we have to adjust according to where the
- section symbol winds up in the output section. */
- if (r_symndx >= locsymcount
- || (elf_bad_symtab (input_bfd)
- && local_sections[r_symndx] == NULL))
- r = bfd_reloc_ok;
- else
- {
- sym = local_syms + r_symndx;
- if (ELF_ST_TYPE (sym->st_info) != STT_SECTION)
- r = bfd_reloc_ok;
- else
- {
- sec = local_sections[r_symndx];
-
- /* It would be logical to add sym->st_value here,
- but Irix 5 sometimes generates a garbage symbol
- value. */
- addend += sec->output_offset;
-
- /* If this is HI16 or GOT16 with an associated LO16,
- adjust the addend accordingly. Otherwise, just
- relocate. */
- if (r_type == R_MIPS_64 && bfd_big_endian (input_bfd))
- r = _bfd_relocate_contents (howto, input_bfd,
- addend,
- contents + rel->r_offset + 4);
- else if (r_type != R_MIPS_HI16 && r_type != R_MIPS_GOT16)
- r = _bfd_relocate_contents (howto, input_bfd,
- addend,
- contents + rel->r_offset);
- else
- {
- Elf_Internal_Rela *lorel;
-
- /* As a GNU extension, permit an arbitrary
- number of R_MIPS_HI16 relocs before the
- R_MIPS_LO16 reloc. This permits gcc to emit
- the HI and LO relocs itself. */
- if (r_type == R_MIPS_GOT16)
- lorel = rel + 1;
- else
- {
- for (lorel = rel + 1;
- (lorel < relend
- && (ELF32_R_TYPE (lorel->r_info)
- == R_MIPS_HI16));
- lorel++)
- ;
- }
- if (lorel < relend
- && ELF32_R_TYPE (lorel->r_info) == R_MIPS_LO16)
- {
- mips_elf_relocate_hi16 (input_bfd, rel, lorel,
- contents, addend);
- r = bfd_reloc_ok;
- }
- else
- r = _bfd_relocate_contents (howto, input_bfd,
- addend,
- contents + rel->r_offset);
- }
- }
- }
+ /* This entry will serve as the page pointer. We can add a
+ 16-bit number to it to get the actual address. */
+ index = entry - sgot->contents;
+ break;
+ }
+ }
+
+ /* If we didn't have an appropriate entry, we create one now. */
+ if (entry == last_entry)
+ index = mips_elf_create_local_got_entry (abfd, g, sgot, value);
+
+ if (offsetp)
+ {
+ address = MIPS_ELF_GET_WORD (abfd, entry);
+ *offsetp = value - address;
+ }
+
+ return index;
+}
+
+/* Find a GOT entry whose higher-order 16 bits are the same as those
+ for value. Return the index into the GOT for this entry. */
+
+static bfd_vma
+mips_elf_got16_entry (abfd, info, value, external)
+ bfd *abfd;
+ struct bfd_link_info *info;
+ bfd_vma value;
+ boolean external;
+{
+ asection *sgot;
+ struct mips_got_info *g;
+ bfd_byte *entry;
+ bfd_byte *last_entry;
+ bfd_vma index = 0;
+ bfd_vma address;
+
+ if (! external)
+ {
+ /* Although the ABI says that it is "the high-order 16 bits" that we
+ want, it is really the %high value. The complete value is
+ calculated with a `addiu' of a LO16 relocation, just as with a
+ HI16/LO16 pair. */
+ value = mips_elf_high (value) << 16;
+ }
+
+ g = mips_elf_got_info (elf_hash_table (info)->dynobj, &sgot);
+
+ /* Look to see if we already have an appropriate entry. */
+ last_entry = sgot->contents + MIPS_ELF_GOT_SIZE (abfd) * g->assigned_gotno;
+ for (entry = (sgot->contents
+ + MIPS_ELF_GOT_SIZE (abfd) * MIPS_RESERVED_GOTNO);
+ entry != last_entry;
+ entry += MIPS_ELF_GOT_SIZE (abfd))
+ {
+ address = MIPS_ELF_GET_WORD (abfd, entry);
+ if (address == value)
+ {
+ /* This entry has the right high-order 16 bits, and the low-order
+ 16 bits are set to zero. */
+ index = entry - sgot->contents;
+ break;
+ }
+ }
+
+ /* If we didn't have an appropriate entry, we create one now. */
+ if (entry == last_entry)
+ index = mips_elf_create_local_got_entry (abfd, g, sgot, value);
+
+ return index;
+}
+
+/* Returns the first relocation of type r_type found, beginning with
+ RELOCATION. RELEND is one-past-the-end of the relocation table. */
+
+static const Elf_Internal_Rela *
+mips_elf_next_relocation (r_type, relocation, relend)
+ unsigned int r_type;
+ const Elf_Internal_Rela *relocation;
+ const Elf_Internal_Rela *relend;
+{
+ /* According to the MIPS ELF ABI, the R_MIPS_LO16 relocation must be
+ immediately following. However, for the IRIX6 ABI, the next
+ relocation may be a composed relocation consisting of several
+ relocations for the same address. In that case, the R_MIPS_LO16
+ relocation may occur as one of these. We permit a similar
+ extension in general, as that is useful for GCC. */
+ while (relocation < relend)
+ {
+ if (ELF32_R_TYPE (relocation->r_info) == r_type)
+ return relocation;
+
+ ++relocation;
+ }
+
+ /* We didn't find it. */
+ bfd_set_error (bfd_error_bad_value);
+ return NULL;
+}
+
+/* Create a rel.dyn relocation for the dynamic linker to resolve. REL
+ is the original relocation, which is now being transformed into a
+ dynamic relocation. The ADDENDP is adjusted if necessary; the
+ caller should store the result in place of the original addend. */
+
+static boolean
+mips_elf_create_dynamic_relocation (output_bfd, info, rel, h, sec,
+ symbol, addendp, input_section, local_p)
+ bfd *output_bfd;
+ struct bfd_link_info *info;
+ const Elf_Internal_Rela *rel;
+ struct mips_elf_link_hash_entry *h;
+ asection *sec;
+ bfd_vma symbol;
+ bfd_vma *addendp;
+ asection *input_section;
+ boolean local_p;
+{
+ Elf_Internal_Rel outrel;
+ boolean skip;
+ asection *sreloc;
+ bfd *dynobj;
+ int r_type;
+
+ r_type = ELF32_R_TYPE (rel->r_info);
+ dynobj = elf_hash_table (info)->dynobj;
+ sreloc
+ = bfd_get_section_by_name (dynobj,
+ MIPS_ELF_REL_DYN_SECTION_NAME (output_bfd));
+ BFD_ASSERT (sreloc != NULL);
+ BFD_ASSERT (sreloc->contents != NULL);
+
+ skip = false;
+
+ /* We begin by assuming that the offset for the dynamic relocation
+ is the same as for the original relocation. We'll adjust this
+ later to reflect the correct output offsets. */
+ if (elf_section_data (input_section)->stab_info == NULL)
+ outrel.r_offset = rel->r_offset;
+ else
+ {
+ /* Except that in a stab section things are more complex.
+ Because we compress stab information, the offset given in the
+ relocation may not be the one we want; we must let the stabs
+ machinery tell us the offset. */
+ outrel.r_offset
+ = (_bfd_stab_section_offset
+ (output_bfd, &elf_hash_table (info)->stab_info,
+ input_section,
+ &elf_section_data (input_section)->stab_info,
+ rel->r_offset));
+ /* If we didn't need the relocation at all, this value will be
+ -1. */
+ if (outrel.r_offset == (bfd_vma) -1)
+ skip = true;
+ }
+
+ /* If we've decided to skip this relocation, just output an empty
+ record. Note that R_MIPS_NONE == 0, so that this call to memset
+ is a way of setting R_TYPE to R_MIPS_NONE. */
+ if (skip)
+ memset (&outrel, 0, sizeof (outrel));
+ else
+ {
+ long indx;
+ bfd_vma section_offset;
+
+ /* We must now calculate the dynamic symbol table index to use
+ in the relocation. */
+ if (h != NULL
+ && (! info->symbolic || (h->root.elf_link_hash_flags
+ & ELF_LINK_HASH_DEF_REGULAR) == 0))
+ {
+ indx = h->root.dynindx;
+ /* h->root.dynindx may be -1 if this symbol was marked to
+ become local. */
+ if (indx == -1)
+ indx = 0;
}
else
{
- bfd_vma relocation;
- boolean local;
- boolean undefined_error;
-
- /* This is a final link. */
- undefined_error = false;
- sym = NULL;
- if (r_symndx < extsymoff
- || (elf_bad_symtab (input_bfd)
- && local_sections[r_symndx] != NULL))
+ if (sec != NULL && bfd_is_abs_section (sec))
+ indx = 0;
+ else if (sec == NULL || sec->owner == NULL)
{
- local = true;
- sym = local_syms + r_symndx;
- sec = local_sections[r_symndx];
- relocation = (sec->output_section->vma
- + sec->output_offset);
-
- /* It would be logical to always add sym->st_value here,
- but Irix 5 sometimes generates a garbage symbol
- value. */
- if (ELF_ST_TYPE (sym->st_info) != STT_SECTION)
- relocation += sym->st_value;
-
- /* mips16 text labels should be treated as odd. */
- if (sym->st_other == STO_MIPS16)
- ++relocation;
+ bfd_set_error (bfd_error_bad_value);
+ return false;
}
else
{
- long indx;
-
- local = false;
- indx = r_symndx - extsymoff;
- h = elf_sym_hashes (input_bfd)[indx];
- while (h->root.type == bfd_link_hash_indirect
- || h->root.type == bfd_link_hash_warning)
- h = (struct elf_link_hash_entry *) h->root.u.i.link;
- if (strcmp (h->root.root.string, "_gp_disp") == 0)
- {
- if (gp == 0)
- {
- if (! ((*info->callbacks->reloc_dangerous)
- (info,
- _("_gp_disp used when GP not defined"),
- input_bfd, input_section,
- rel->r_offset)))
- return false;
- /* Only give the error once per link. */
- gp = 4;
- _bfd_set_gp_value (output_bfd, gp);
- relocation = 0;
- }
- else
- {
- sec = input_section;
- if (sec->output_section != NULL)
- relocation = (gp
- - (rel->r_offset
- + sec->output_section->vma
- + sec->output_offset));
- else
- relocation = gp - rel->r_offset;
- if (r_type == R_MIPS_LO16)
- relocation += 4;
- }
- }
- else if (h->root.type == bfd_link_hash_defined
- || h->root.type == bfd_link_hash_defweak)
- {
- sec = h->root.u.def.section;
- if (sec->output_section == NULL)
- relocation = 0;
- else
- relocation = (h->root.u.def.value
- + sec->output_section->vma
- + sec->output_offset);
- }
- else if (h->root.type == bfd_link_hash_undefweak)
- relocation = 0;
- else if (info->shared && !info->symbolic && !info->no_undefined)
- relocation = 0;
- else if (strcmp (h->root.root.string, "_DYNAMIC_LINK") == 0)
- {
- /* If this is a dynamic link, we should have created
- a _DYNAMIC_LINK symbol in
- mips_elf_create_dynamic_sections. Otherwise, we
- should define the symbol with a value of 0.
- FIXME: It should probably get into the symbol
- table somehow as well. */
- BFD_ASSERT (! info->shared);
- BFD_ASSERT (bfd_get_section_by_name (output_bfd,
- ".dynamic") == NULL);
- relocation = 0;
- }
- else
- {
- if (! ((*info->callbacks->undefined_symbol)
- (info, h->root.root.string, input_bfd,
- input_section, rel->r_offset)))
- return false;
- undefined_error = true;
- relocation = 0;
- }
+ indx = elf_section_data (sec->output_section)->dynindx;
+ if (indx == 0)
+ abort ();
}
- mh = (struct mips_elf_link_hash_entry *) h;
- if (h != NULL)
- other = h->other;
- else if (sym != NULL)
- other = sym->st_other;
+ /* Figure out how far the target of the relocation is from
+ the beginning of its section. */
+ section_offset = symbol - sec->output_section->vma;
+ /* The relocation we're building is section-relative.
+ Therefore, the original addend must be adjusted by the
+ section offset. */
+ *addendp += symbol - sec->output_section->vma;
+ /* Now, the relocation is just against the section. */
+ symbol = sec->output_section->vma;
+ }
+
+ /* If the relocation is against a local symbol was previously an
+ absolute relocation, we must adjust it by the value we give
+ it in the dynamic symbol table. */
+ if (local_p && r_type != R_MIPS_REL32)
+ *addendp += symbol;
+
+ /* The relocation is always an REL32 relocation because we don't
+ know where the shared library will wind up at load-time. */
+ outrel.r_info = ELF32_R_INFO (indx, R_MIPS_REL32);
+
+ /* Adjust the output offset of the relocation to reference the
+ correct location in the output file. */
+ outrel.r_offset += (input_section->output_section->vma
+ + input_section->output_offset);
+ }
+
+ /* Put the relocation back out. We have to use the special
+ relocation outputter in the 64-bit case since the 64-bit
+ relocation format is non-standard. */
+ if (ABI_64_P (output_bfd))
+ {
+ (*get_elf_backend_data (output_bfd)->s->swap_reloc_out)
+ (output_bfd, &outrel,
+ (sreloc->contents
+ + sreloc->reloc_count * sizeof (Elf64_Mips_External_Rel)));
+ }
+ else
+ bfd_elf32_swap_reloc_out (output_bfd, &outrel,
+ (((Elf32_External_Rel *)
+ sreloc->contents)
+ + sreloc->reloc_count));
+
+ /* Record the index of the first relocation referencing H. This
+ information is later emitted in the .msym section. */
+ if (h != NULL
+ && (h->min_dyn_reloc_index == 0
+ || sreloc->reloc_count < h->min_dyn_reloc_index))
+ h->min_dyn_reloc_index = sreloc->reloc_count;
+
+ /* We've now added another relocation. */
+ ++sreloc->reloc_count;
+
+ /* Make sure the output section is writable. The dynamic linker
+ will be writing to it. */
+ elf_section_data (input_section->output_section)->this_hdr.sh_flags
+ |= SHF_WRITE;
+
+ /* On IRIX5, make an entry of compact relocation info. */
+ if (! skip && IRIX_COMPAT (output_bfd) == ict_irix5)
+ {
+ asection *scpt = bfd_get_section_by_name (dynobj, ".compact_rel");
+ bfd_byte *cr;
+
+ if (scpt)
+ {
+ Elf32_crinfo cptrel;
+
+ mips_elf_set_cr_format (cptrel, CRF_MIPS_LONG);
+ cptrel.vaddr = (rel->r_offset
+ + input_section->output_section->vma
+ + input_section->output_offset);
+ if (r_type == R_MIPS_REL32)
+ mips_elf_set_cr_type (cptrel, CRT_MIPS_REL32);
+ else
+ mips_elf_set_cr_type (cptrel, CRT_MIPS_WORD);
+ mips_elf_set_cr_dist2to (cptrel, 0);
+ cptrel.konst = *addendp;
+
+ cr = (scpt->contents
+ + sizeof (Elf32_External_compact_rel));
+ bfd_elf32_swap_crinfo_out (output_bfd, &cptrel,
+ ((Elf32_External_crinfo *) cr
+ + scpt->reloc_count));
+ ++scpt->reloc_count;
+ }
+ }
+
+ return true;
+}
+
+/* Calculate the value produced by the RELOCATION (which comes from
+ the INPUT_BFD). The ADDEND is the addend to use for this
+ RELOCATION; RELOCATION->R_ADDEND is ignored.
+
+ The result of the relocation calculation is stored in VALUEP.
+ REQUIRE_JALXP indicates whether or not the opcode used with this
+ relocation must be JALX.
+
+ This function returns bfd_reloc_continue if the caller need take no
+ further action regarding this relocation, bfd_reloc_notsupported if
+ something goes dramatically wrong, bfd_reloc_overflow if an
+ overflow occurs, and bfd_reloc_ok to indicate success. */
+
+static bfd_reloc_status_type
+mips_elf_calculate_relocation (abfd,
+ input_bfd,
+ input_section,
+ info,
+ relocation,
+ addend,
+ howto,
+ local_syms,
+ local_sections,
+ valuep,
+ namep,
+ require_jalxp)
+ bfd *abfd;
+ bfd *input_bfd;
+ asection *input_section;
+ struct bfd_link_info *info;
+ const Elf_Internal_Rela *relocation;
+ bfd_vma addend;
+ reloc_howto_type *howto;
+ Elf_Internal_Sym *local_syms;
+ asection **local_sections;
+ bfd_vma *valuep;
+ const char **namep;
+ boolean *require_jalxp;
+{
+ /* The eventual value we will return. */
+ bfd_vma value;
+ /* The address of the symbol against which the relocation is
+ occurring. */
+ bfd_vma symbol = 0;
+ /* The final GP value to be used for the relocatable, executable, or
+ shared object file being produced. */
+ bfd_vma gp = (bfd_vma) - 1;
+ /* The place (section offset or address) of the storage unit being
+ relocated. */
+ bfd_vma p;
+ /* The value of GP used to create the relocatable object. */
+ bfd_vma gp0 = (bfd_vma) - 1;
+ /* The offset into the global offset table at which the address of
+ the relocation entry symbol, adjusted by the addend, resides
+ during execution. */
+ bfd_vma g = (bfd_vma) - 1;
+ /* The section in which the symbol referenced by the relocation is
+ located. */
+ asection *sec = NULL;
+ struct mips_elf_link_hash_entry *h = NULL;
+ /* True if the symbol referred to by this relocation is a local
+ symbol. */
+ boolean local_p;
+ /* True if the symbol referred to by this relocation is "_gp_disp". */
+ boolean gp_disp_p = false;
+ Elf_Internal_Shdr *symtab_hdr;
+ size_t extsymoff;
+ unsigned long r_symndx;
+ int r_type;
+ /* True if overflow occurred during the calculation of the
+ relocation value. */
+ boolean overflowed_p;
+ /* True if this relocation refers to a MIPS16 function. */
+ boolean target_is_16_bit_code_p = false;
+
+ /* Parse the relocation. */
+ r_symndx = ELF32_R_SYM (relocation->r_info);
+ r_type = ELF32_R_TYPE (relocation->r_info);
+ p = (input_section->output_section->vma
+ + input_section->output_offset
+ + relocation->r_offset);
+
+ /* Assume that there will be no overflow. */
+ overflowed_p = false;
+
+ /* Figure out whether or not the symbol is local, and get the offset
+ used in the array of hash table entries. */
+ symtab_hdr = &elf_tdata (input_bfd)->symtab_hdr;
+ local_p = mips_elf_local_relocation_p (input_bfd, relocation,
+ local_sections, false);
+ if (! elf_bad_symtab (input_bfd))
+ extsymoff = symtab_hdr->sh_info;
+ else
+ {
+ /* The symbol table does not follow the rule that local symbols
+ must come before globals. */
+ extsymoff = 0;
+ }
+
+ /* Figure out the value of the symbol. */
+ if (local_p)
+ {
+ Elf_Internal_Sym *sym;
+
+ sym = local_syms + r_symndx;
+ sec = local_sections[r_symndx];
+
+ symbol = sec->output_section->vma + sec->output_offset;
+ if (ELF_ST_TYPE (sym->st_info) != STT_SECTION)
+ symbol += sym->st_value;
+
+ /* MIPS16 text labels should be treated as odd. */
+ if (sym->st_other == STO_MIPS16)
+ ++symbol;
+
+ /* Record the name of this symbol, for our caller. */
+ *namep = bfd_elf_string_from_elf_section (input_bfd,
+ symtab_hdr->sh_link,
+ sym->st_name);
+ if (*namep == '\0')
+ *namep = bfd_section_name (input_bfd, sec);
+
+ target_is_16_bit_code_p = (sym->st_other == STO_MIPS16);
+ }
+ else
+ {
+ /* For global symbols we look up the symbol in the hash-table. */
+ h = ((struct mips_elf_link_hash_entry *)
+ elf_sym_hashes (input_bfd) [r_symndx - extsymoff]);
+ /* Find the real hash-table entry for this symbol. */
+ while (h->root.root.type == bfd_link_hash_indirect
+ || h->root.root.type == bfd_link_hash_warning)
+ h = (struct mips_elf_link_hash_entry *) h->root.root.u.i.link;
+
+ /* Record the name of this symbol, for our caller. */
+ *namep = h->root.root.root.string;
+
+ /* See if this is the special _gp_disp symbol. Note that such a
+ symbol must always be a global symbol. */
+ if (strcmp (h->root.root.root.string, "_gp_disp") == 0)
+ {
+ /* Relocations against _gp_disp are permitted only with
+ R_MIPS_HI16 and R_MIPS_LO16 relocations. */
+ if (r_type != R_MIPS_HI16 && r_type != R_MIPS_LO16)
+ return bfd_reloc_notsupported;
+
+ gp_disp_p = true;
+ }
+ /* If this symbol is defined, calculate its address. Note that
+ _gp_disp is a magic symbol, always implicitly defined by the
+ linker, so it's inappropriate to check to see whether or not
+ its defined. */
+ else if ((h->root.root.type == bfd_link_hash_defined
+ || h->root.root.type == bfd_link_hash_defweak)
+ && h->root.root.u.def.section)
+ {
+ sec = h->root.root.u.def.section;
+ if (sec->output_section)
+ symbol = (h->root.root.u.def.value
+ + sec->output_section->vma
+ + sec->output_offset);
else
- other = 0;
-
- /* If this function has an fn_stub, then it is a mips16
- function which needs a stub if it is called by a 32 bit
- function. If this reloc is anything other than a 16 bit
- call, redirect the reloc to the stub. We don't redirect
- relocs from other stub functions. */
- if (r_type != R_MIPS16_26
- && ((mh != NULL
- && mh->fn_stub != NULL)
- || (mh == NULL
- && elf_tdata (input_bfd)->local_stubs != NULL
- && elf_tdata (input_bfd)->local_stubs[r_symndx] != NULL))
- && strncmp (bfd_get_section_name (input_bfd, input_section),
- FN_STUB, sizeof FN_STUB - 1) != 0
- && strncmp (bfd_get_section_name (input_bfd, input_section),
- CALL_STUB, sizeof CALL_STUB - 1) != 0
- && strncmp (bfd_get_section_name (input_bfd, input_section),
- CALL_FP_STUB, sizeof CALL_FP_STUB - 1) != 0)
+ symbol = h->root.root.u.def.value;
+ }
+ else if (h->root.root.type == bfd_link_hash_undefweak)
+ /* We allow relocations against undefined weak symbols, giving
+ it the value zero, so that you can undefined weak functions
+ and check to see if they exist by looking at their
+ addresses. */
+ symbol = 0;
+ else if (info->shared && !info->symbolic && !info->no_undefined
+ && ELF_ST_VISIBILITY (h->root.other) == STV_DEFAULT)
+ symbol = 0;
+ else if (strcmp (h->root.root.root.string, "_DYNAMIC_LINK") == 0 ||
+ strcmp (h->root.root.root.string, "_DYNAMIC_LINKING") == 0)
+ {
+ /* If this is a dynamic link, we should have created a
+ _DYNAMIC_LINK symbol or _DYNAMIC_LINKING(for normal mips) symbol
+ in in mips_elf_create_dynamic_sections.
+ Otherwise, we should define the symbol with a value of 0.
+ FIXME: It should probably get into the symbol table
+ somehow as well. */
+ BFD_ASSERT (! info->shared);
+ BFD_ASSERT (bfd_get_section_by_name (abfd, ".dynamic") == NULL);
+ symbol = 0;
+ }
+ else
+ {
+ if (! ((*info->callbacks->undefined_symbol)
+ (info, h->root.root.root.string, input_bfd,
+ input_section, relocation->r_offset,
+ (!info->shared || info->no_undefined
+ || ELF_ST_VISIBILITY (h->root.other)))))
+ return bfd_reloc_undefined;
+ symbol = 0;
+ }
+
+ target_is_16_bit_code_p = (h->root.other == STO_MIPS16);
+ }
+
+ /* If this is a 32-bit call to a 16-bit function with a stub, we
+ need to redirect the call to the stub, unless we're already *in*
+ a stub. */
+ if (r_type != R_MIPS16_26 && !info->relocateable
+ && ((h != NULL && h->fn_stub != NULL)
+ || (local_p && elf_tdata (input_bfd)->local_stubs != NULL
+ && elf_tdata (input_bfd)->local_stubs[r_symndx] != NULL))
+ && !mips_elf_stub_section_p (input_bfd, input_section))
+ {
+ /* This is a 32-bit call to a 16-bit function. We should
+ have already noticed that we were going to need the
+ stub. */
+ if (local_p)
+ sec = elf_tdata (input_bfd)->local_stubs[r_symndx];
+ else
+ {
+ BFD_ASSERT (h->need_fn_stub);
+ sec = h->fn_stub;
+ }
+
+ symbol = sec->output_section->vma + sec->output_offset;
+ }
+ /* If this is a 16-bit call to a 32-bit function with a stub, we
+ need to redirect the call to the stub. */
+ else if (r_type == R_MIPS16_26 && !info->relocateable
+ && h != NULL
+ && (h->call_stub != NULL || h->call_fp_stub != NULL)
+ && !target_is_16_bit_code_p)
+ {
+ /* If both call_stub and call_fp_stub are defined, we can figure
+ out which one to use by seeing which one appears in the input
+ file. */
+ if (h->call_stub != NULL && h->call_fp_stub != NULL)
+ {
+ asection *o;
+
+ sec = NULL;
+ for (o = input_bfd->sections; o != NULL; o = o->next)
{
- if (mh != NULL)
+ if (strncmp (bfd_get_section_name (input_bfd, o),
+ CALL_FP_STUB, sizeof CALL_FP_STUB - 1) == 0)
{
- BFD_ASSERT (mh->need_fn_stub);
- relocation = (mh->fn_stub->output_section->vma
- + mh->fn_stub->output_offset);
+ sec = h->call_fp_stub;
+ break;
}
- else
- {
- asection *fn_stub;
+ }
+ if (sec == NULL)
+ sec = h->call_stub;
+ }
+ else if (h->call_stub != NULL)
+ sec = h->call_stub;
+ else
+ sec = h->call_fp_stub;
+
+ BFD_ASSERT (sec->_raw_size > 0);
+ symbol = sec->output_section->vma + sec->output_offset;
+ }
+
+ /* Calls from 16-bit code to 32-bit code and vice versa require the
+ special jalx instruction. */
+ *require_jalxp = (!info->relocateable
+ && ((r_type == R_MIPS16_26) != target_is_16_bit_code_p));
+
+ local_p = mips_elf_local_relocation_p (input_bfd, relocation,
+ local_sections, true);
+
+ /* If we haven't already determined the GOT offset, or the GP value,
+ and we're going to need it, get it now. */
+ switch (r_type)
+ {
+ case R_MIPS_CALL16:
+ case R_MIPS_GOT16:
+ case R_MIPS_GOT_DISP:
+ case R_MIPS_GOT_HI16:
+ case R_MIPS_CALL_HI16:
+ case R_MIPS_GOT_LO16:
+ case R_MIPS_CALL_LO16:
+ /* Find the index into the GOT where this value is located. */
+ if (!local_p)
+ {
+ BFD_ASSERT (addend == 0);
+ g = mips_elf_global_got_index
+ (elf_hash_table (info)->dynobj,
+ (struct elf_link_hash_entry *) h);
+ if (! elf_hash_table(info)->dynamic_sections_created
+ || (info->shared
+ && (info->symbolic || h->root.dynindx == -1)
+ && (h->root.elf_link_hash_flags & ELF_LINK_HASH_DEF_REGULAR)))
+ {
+ /* This is a static link or a -Bsymbolic link. The
+ symbol is defined locally, or was forced to be local.
+ We must initialize this entry in the GOT. */
+ asection *sgot = mips_elf_got_section(elf_hash_table
+ (info)->dynobj);
+ MIPS_ELF_PUT_WORD (elf_hash_table (info)->dynobj,
+ symbol + addend, sgot->contents + g);
+ }
+ }
+ else if (r_type == R_MIPS_GOT16)
+ /* There's no need to create a local GOT entry here; the
+ calculation for a local GOT16 entry does not involve G. */
+ break;
+ else
+ {
+ g = mips_elf_local_got_index (abfd, info, symbol + addend);
+ if (g == (bfd_vma) -1)
+ return false;
+ }
+
+ /* Convert GOT indices to actual offsets. */
+ g = mips_elf_got_offset_from_index (elf_hash_table (info)->dynobj,
+ abfd, g);
+ break;
+
+ case R_MIPS_HI16:
+ case R_MIPS_LO16:
+ case R_MIPS_GPREL16:
+ case R_MIPS_GPREL32:
+ case R_MIPS_LITERAL:
+ gp0 = _bfd_get_gp_value (input_bfd);
+ gp = _bfd_get_gp_value (abfd);
+ break;
+
+ default:
+ break;
+ }
+
+ /* Figure out what kind of relocation is being performed. */
+ switch (r_type)
+ {
+ case R_MIPS_NONE:
+ return bfd_reloc_continue;
+
+ case R_MIPS_16:
+ value = symbol + mips_elf_sign_extend (addend, 16);
+ overflowed_p = mips_elf_overflow_p (value, 16);
+ break;
+
+ case R_MIPS_32:
+ case R_MIPS_REL32:
+ case R_MIPS_64:
+ if ((info->shared
+ || (elf_hash_table (info)->dynamic_sections_created
+ && h != NULL
+ && ((h->root.elf_link_hash_flags & ELF_LINK_HASH_DEF_DYNAMIC)
+ != 0)))
+ && (input_section->flags & SEC_ALLOC) != 0)
+ {
+ /* If we're creating a shared library, or this relocation is
+ against a symbol in a shared library, then we can't know
+ where the symbol will end up. So, we create a relocation
+ record in the output, and leave the job up to the dynamic
+ linker. */
+ value = addend;
+ if (!mips_elf_create_dynamic_relocation (abfd,
+ info,
+ relocation,
+ h,
+ sec,
+ symbol,
+ &value,
+ input_section, local_p))
+ return false;
+ }
+ else
+ {
+ if (r_type != R_MIPS_REL32)
+ value = symbol + addend;
+ else
+ value = addend;
+ }
+ value &= howto->dst_mask;
+ break;
+
+ case R_MIPS_PC32:
+ case R_MIPS_PC64:
+ case R_MIPS_GNU_REL_LO16:
+ value = symbol + addend - p;
+ value &= howto->dst_mask;
+ break;
+
+ case R_MIPS_GNU_REL16_S2:
+ value = symbol + mips_elf_sign_extend (addend << 2, 18) - p;
+ overflowed_p = mips_elf_overflow_p (value, 18);
+ value = (value >> 2) & howto->dst_mask;
+ break;
+
+ case R_MIPS_GNU_REL_HI16:
+ value = mips_elf_high (addend + symbol - p);
+ value &= howto->dst_mask;
+ break;
+
+ case R_MIPS16_26:
+ /* The calculation for R_MIPS_26 is just the same as for an
+ R_MIPS_26. It's only the storage of the relocated field into
+ the output file that's different. That's handled in
+ mips_elf_perform_relocation. So, we just fall through to the
+ R_MIPS_26 case here. */
+ case R_MIPS_26:
+ if (local_p)
+ value = (((addend << 2) | (p & 0xf0000000)) + symbol) >> 2;
+ else
+ value = (mips_elf_sign_extend (addend << 2, 28) + symbol) >> 2;
+ value &= howto->dst_mask;
+ break;
+
+ case R_MIPS_HI16:
+ if (!gp_disp_p)
+ {
+ value = mips_elf_high (addend + symbol);
+ value &= howto->dst_mask;
+ }
+ else
+ {
+ value = mips_elf_high (addend + gp - p);
+ overflowed_p = mips_elf_overflow_p (value, 16);
+ }
+ break;
+
+ case R_MIPS_LO16:
+ if (!gp_disp_p)
+ value = (symbol + addend) & howto->dst_mask;
+ else
+ {
+ value = addend + gp - p + 4;
+ /* The MIPS ABI requires checking the R_MIPS_LO16 relocation
+ for overflow. But, on, say, Irix 5, relocations against
+ _gp_disp are normally generated from the .cpload
+ pseudo-op. It generates code that normally looks like
+ this:
+
+ lui $gp,%hi(_gp_disp)
+ addiu $gp,$gp,%lo(_gp_disp)
+ addu $gp,$gp,$t9
+
+ Here $t9 holds the address of the function being called,
+ as required by the MIPS ELF ABI. The R_MIPS_LO16
+ relocation can easily overflow in this situation, but the
+ R_MIPS_HI16 relocation will handle the overflow.
+ Therefore, we consider this a bug in the MIPS ABI, and do
+ not check for overflow here. */
+ }
+ break;
+
+ case R_MIPS_LITERAL:
+ /* Because we don't merge literal sections, we can handle this
+ just like R_MIPS_GPREL16. In the long run, we should merge
+ shared literals, and then we will need to additional work
+ here. */
+
+ /* Fall through. */
+
+ case R_MIPS16_GPREL:
+ /* The R_MIPS16_GPREL performs the same calculation as
+ R_MIPS_GPREL16, but stores the relocated bits in a different
+ order. We don't need to do anything special here; the
+ differences are handled in mips_elf_perform_relocation. */
+ case R_MIPS_GPREL16:
+ if (local_p)
+ value = mips_elf_sign_extend (addend, 16) + symbol + gp0 - gp;
+ else
+ value = mips_elf_sign_extend (addend, 16) + symbol - gp;
+ overflowed_p = mips_elf_overflow_p (value, 16);
+ break;
+
+ case R_MIPS_GOT16:
+ if (local_p)
+ {
+ boolean forced;
+
+ /* The special case is when the symbol is forced to be local. We
+ need the full address in the GOT since no R_MIPS_LO16 relocation
+ follows. */
+ forced = ! mips_elf_local_relocation_p (input_bfd, relocation,
+ local_sections, false);
+ value = mips_elf_got16_entry (abfd, info, symbol + addend, forced);
+ if (value == (bfd_vma) -1)
+ return false;
+ value
+ = mips_elf_got_offset_from_index (elf_hash_table (info)->dynobj,
+ abfd,
+ value);
+ overflowed_p = mips_elf_overflow_p (value, 16);
+ break;
+ }
+
+ /* Fall through. */
+
+ case R_MIPS_CALL16:
+ case R_MIPS_GOT_DISP:
+ value = g;
+ overflowed_p = mips_elf_overflow_p (value, 16);
+ break;
+
+ case R_MIPS_GPREL32:
+ value = (addend + symbol + gp0 - gp) & howto->dst_mask;
+ break;
+
+ case R_MIPS_PC16:
+ value = mips_elf_sign_extend (addend, 16) + symbol - p;
+ value = (bfd_vma) ((bfd_signed_vma) value / 4);
+ overflowed_p = mips_elf_overflow_p (value, 16);
+ break;
+
+ case R_MIPS_GOT_HI16:
+ case R_MIPS_CALL_HI16:
+ /* We're allowed to handle these two relocations identically.
+ The dynamic linker is allowed to handle the CALL relocations
+ differently by creating a lazy evaluation stub. */
+ value = g;
+ value = mips_elf_high (value);
+ value &= howto->dst_mask;
+ break;
+
+ case R_MIPS_GOT_LO16:
+ case R_MIPS_CALL_LO16:
+ value = g & howto->dst_mask;
+ break;
+
+ case R_MIPS_GOT_PAGE:
+ value = mips_elf_got_page (abfd, info, symbol + addend, NULL);
+ if (value == (bfd_vma) -1)
+ return false;
+ value = mips_elf_got_offset_from_index (elf_hash_table (info)->dynobj,
+ abfd,
+ value);
+ overflowed_p = mips_elf_overflow_p (value, 16);
+ break;
+
+ case R_MIPS_GOT_OFST:
+ mips_elf_got_page (abfd, info, symbol + addend, &value);
+ overflowed_p = mips_elf_overflow_p (value, 16);
+ break;
+
+ case R_MIPS_SUB:
+ value = symbol - addend;
+ value &= howto->dst_mask;
+ break;
+
+ case R_MIPS_HIGHER:
+ value = mips_elf_higher (addend + symbol);
+ value &= howto->dst_mask;
+ break;
+
+ case R_MIPS_HIGHEST:
+ value = mips_elf_highest (addend + symbol);
+ value &= howto->dst_mask;
+ break;
+
+ case R_MIPS_SCN_DISP:
+ value = symbol + addend - sec->output_offset;
+ value &= howto->dst_mask;
+ break;
+
+ case R_MIPS_PJUMP:
+ case R_MIPS_JALR:
+ /* Both of these may be ignored. R_MIPS_JALR is an optimization
+ hint; we could improve performance by honoring that hint. */
+ return bfd_reloc_continue;
+
+ case R_MIPS_GNU_VTINHERIT:
+ case R_MIPS_GNU_VTENTRY:
+ /* We don't do anything with these at present. */
+ return bfd_reloc_continue;
+
+ default:
+ /* An unrecognized relocation type. */
+ return bfd_reloc_notsupported;
+ }
+
+ /* Store the VALUE for our caller. */
+ *valuep = value;
+ return overflowed_p ? bfd_reloc_overflow : bfd_reloc_ok;
+}
+
+/* Obtain the field relocated by RELOCATION. */
+
+static bfd_vma
+mips_elf_obtain_contents (howto, relocation, input_bfd, contents)
+ reloc_howto_type *howto;
+ const Elf_Internal_Rela *relocation;
+ bfd *input_bfd;
+ bfd_byte *contents;
+{
+ bfd_vma x;
+ bfd_byte *location = contents + relocation->r_offset;
+
+ /* Obtain the bytes. */
+ x = bfd_get (8 * bfd_get_reloc_size (howto), input_bfd, location);
- fn_stub = elf_tdata (input_bfd)->local_stubs[r_symndx];
- relocation = (fn_stub->output_section->vma
- + fn_stub->output_offset);
- }
+ if ((ELF32_R_TYPE (relocation->r_info) == R_MIPS16_26
+ || ELF32_R_TYPE (relocation->r_info) == R_MIPS16_GPREL)
+ && bfd_little_endian (input_bfd))
+ /* The two 16-bit words will be reversed on a little-endian
+ system. See mips_elf_perform_relocation for more details. */
+ x = (((x & 0xffff) << 16) | ((x & 0xffff0000) >> 16));
- /* RELOCATION now points to 32 bit code. */
- other = 0;
- }
+ return x;
+}
- /* If this function has a call_stub, then it is called by a
- mips16 function; the call needs to go through a stub if
- this function is a 32 bit function. If this reloc is a
- 16 bit call, and the symbol is not a 16 bit function,
- then redirect the reloc to the stub. Note that we don't
- need to worry about calling the function through a
- function pointer; such calls are handled by routing
- through a special mips16 routine. We don't have to check
- whether this call is from a stub; it can't be, because a
- stub contains 32 bit code, and hence can not have a 16
- bit reloc. */
- if (r_type == R_MIPS16_26
- && mh != NULL
- && (mh->call_stub != NULL || mh->call_fp_stub != NULL)
- && other != STO_MIPS16)
- {
- asection *stub;
+/* It has been determined that the result of the RELOCATION is the
+ VALUE. Use HOWTO to place VALUE into the output file at the
+ appropriate position. The SECTION is the section to which the
+ relocation applies. If REQUIRE_JALX is true, then the opcode used
+ for the relocation must be either JAL or JALX, and it is
+ unconditionally converted to JALX.
- /* If both call_stub and call_fp_stub are defined, we
- can figure out which one to use by seeing which one
- appears in the input file. */
- if (mh->call_stub != NULL && mh->call_fp_stub != NULL)
- {
- asection *o;
+ Returns false if anything goes wrong. */
- stub = NULL;
- for (o = input_bfd->sections; o != NULL; o = o->next)
- {
- if (strncmp (bfd_get_section_name (input_bfd, o),
- CALL_FP_STUB, sizeof CALL_FP_STUB - 1) == 0)
- {
- stub = mh->call_fp_stub;
- break;
- }
- }
- if (stub == NULL)
- stub = mh->call_stub;
- }
- else if (mh->call_stub != NULL)
- stub = mh->call_stub;
- else
- stub = mh->call_fp_stub;
+static boolean
+mips_elf_perform_relocation (info, howto, relocation, value,
+ input_bfd, input_section,
+ contents, require_jalx)
+ struct bfd_link_info *info;
+ reloc_howto_type *howto;
+ const Elf_Internal_Rela *relocation;
+ bfd_vma value;
+ bfd *input_bfd;
+ asection *input_section;
+ bfd_byte *contents;
+ boolean require_jalx;
+{
+ bfd_vma x;
+ bfd_byte *location;
+ int r_type = ELF32_R_TYPE (relocation->r_info);
- BFD_ASSERT (stub->_raw_size > 0);
- relocation = stub->output_section->vma + stub->output_offset;
- }
+ /* Figure out where the relocation is occurring. */
+ location = contents + relocation->r_offset;
- if (r_type == R_MIPS_HI16)
- {
- Elf_Internal_Rela *lorel;
-
- /* As a GNU extension, permit an arbitrary number of
- R_MIPS_HI16 relocs before the R_MIPS_LO16 reloc.
- This permits gcc to emit the HI and LO relocs itself. */
- for (lorel = rel + 1;
- (lorel < relend
- && ELF32_R_TYPE (lorel->r_info) == R_MIPS_HI16);
- lorel++)
- ;
- if (lorel < relend
- && ELF32_R_TYPE (lorel->r_info) == R_MIPS_LO16)
- {
- mips_elf_relocate_hi16 (input_bfd, rel, lorel,
- contents, relocation + addend);
- r = bfd_reloc_ok;
- }
- else
- r = _bfd_final_link_relocate (howto, input_bfd, input_section,
- contents, rel->r_offset,
- relocation, addend);
- }
- else if (r_type == R_MIPS_GOT16 && local)
- {
- /* GOT16 must also have an associated LO16 in the local
- case. In this case, the addend is extracted and the
- section in which the referenced object is determined.
- Then the final address of the object is computed and
- the GOT entry for the hipage (an aligned 64kb chunk)
- is added to .got section if needed. The offset field
- of the GOT16-relocated instruction is replaced by the
- index of this GOT entry for the hipage. */
- if ((rel + 1) < relend
- && ELF32_R_TYPE ((rel + 1)->r_info) == R_MIPS_LO16)
- {
- if (! mips_elf_relocate_got_local (output_bfd, input_bfd,
- sgot, rel, rel + 1,
- contents,
- relocation + addend))
- return false;
- r = bfd_reloc_ok;
- }
- else
- r = bfd_reloc_outofrange;
- }
- else if (r_type == R_MIPS_CALL16
- || r_type == R_MIPS_GOT16
- || r_type == R_MIPS_CALL_LO16
- || r_type == R_MIPS_GOT_LO16)
- {
- bfd_vma offset;
-
- /* This symbol must be registered as a global symbol
- having the corresponding got entry. */
- BFD_ASSERT (h->got.offset != (bfd_vma) -1);
-
- offset = (h->dynindx - g->global_gotsym + g->local_gotno) * 4;
- BFD_ASSERT (g->local_gotno <= offset
- && offset < sgot->_raw_size);
- bfd_put_32 (output_bfd, relocation + addend,
- sgot->contents + offset);
- offset = (sgot->output_section->vma + sgot->output_offset
- + offset - gp);
- mips_elf_relocate_global_got (input_bfd, rel, contents,
- offset);
- r = bfd_reloc_ok;
- }
- else if (r_type == R_MIPS_CALL_HI16
- || r_type == R_MIPS_GOT_HI16)
- {
- bfd_vma offset;
-
- /* This must be a global symbol with a got entry. The
- next reloc must be the corresponding LO16 reloc. */
- BFD_ASSERT (h != NULL && h->got.offset != (bfd_vma) -1);
- BFD_ASSERT ((rel + 1) < relend);
- BFD_ASSERT ((int) ELF32_R_TYPE ((rel + 1)->r_info)
- == (r_type == R_MIPS_CALL_HI16
- ? (int) R_MIPS_CALL_LO16
- : (int) R_MIPS_GOT_LO16));
-
- offset = (h->dynindx - g->global_gotsym + g->local_gotno) * 4;
- BFD_ASSERT (g->local_gotno <= offset
- && offset < sgot->_raw_size);
- bfd_put_32 (output_bfd, relocation + addend,
- sgot->contents + offset);
- offset = (sgot->output_section->vma + sgot->output_offset
- + offset - gp);
- mips_elf_relocate_hi16 (input_bfd, rel, rel + 1, contents,
- offset);
- r = bfd_reloc_ok;
- }
- else if (r_type == R_MIPS_REL32
- || r_type == R_MIPS_32)
- {
- Elf_Internal_Rel outrel;
- Elf32_crinfo cptrel;
- bfd_byte *cr;
-
- if ((info->shared
- || (elf_hash_table (info)->dynamic_sections_created
- && h != NULL
- && ((h->elf_link_hash_flags & ELF_LINK_HASH_DEF_REGULAR)
- == 0)))
- && (input_section->flags & SEC_ALLOC) != 0)
- {
- boolean skip;
+ /* Obtain the current value. */
+ x = mips_elf_obtain_contents (howto, relocation, input_bfd, contents);
- /* When generating a shared object, these
- relocations are copied into the output file to be
- resolved at run time. */
- if (sreloc == NULL)
- {
- sreloc = bfd_get_section_by_name (dynobj, ".rel.dyn");
- BFD_ASSERT (sreloc != NULL);
- }
+ /* Clear the field we are setting. */
+ x &= ~howto->dst_mask;
- skip = false;
+ /* If this is the R_MIPS16_26 relocation, we must store the
+ value in a funny way. */
+ if (r_type == R_MIPS16_26)
+ {
+ /* R_MIPS16_26 is used for the mips16 jal and jalx instructions.
+ Most mips16 instructions are 16 bits, but these instructions
+ are 32 bits.
+
+ The format of these instructions is:
+
+ +--------------+--------------------------------+
+ ! JALX ! X! Imm 20:16 ! Imm 25:21 !
+ +--------------+--------------------------------+
+ ! Immediate 15:0 !
+ +-----------------------------------------------+
+
+ JALX is the 5-bit value 00011. X is 0 for jal, 1 for jalx.
+ Note that the immediate value in the first word is swapped.
+
+ When producing a relocateable object file, R_MIPS16_26 is
+ handled mostly like R_MIPS_26. In particular, the addend is
+ stored as a straight 26-bit value in a 32-bit instruction.
+ (gas makes life simpler for itself by never adjusting a
+ R_MIPS16_26 reloc to be against a section, so the addend is
+ always zero). However, the 32 bit instruction is stored as 2
+ 16-bit values, rather than a single 32-bit value. In a
+ big-endian file, the result is the same; in a little-endian
+ file, the two 16-bit halves of the 32 bit value are swapped.
+ This is so that a disassembler can recognize the jal
+ instruction.
+
+ When doing a final link, R_MIPS16_26 is treated as a 32 bit
+ instruction stored as two 16-bit values. The addend A is the
+ contents of the targ26 field. The calculation is the same as
+ R_MIPS_26. When storing the calculated value, reorder the
+ immediate value as shown above, and don't forget to store the
+ value as two 16-bit values.
+
+ To put it in MIPS ABI terms, the relocation field is T-targ26-16,
+ defined as
+
+ big-endian:
+ +--------+----------------------+
+ | | |
+ | | targ26-16 |
+ |31 26|25 0|
+ +--------+----------------------+
+
+ little-endian:
+ +----------+------+-------------+
+ | | | |
+ | sub1 | | sub2 |
+ |0 9|10 15|16 31|
+ +----------+--------------------+
+ where targ26-16 is sub1 followed by sub2 (i.e., the addend field A is
+ ((sub1 << 16) | sub2)).
+
+ When producing a relocateable object file, the calculation is
+ (((A < 2) | (P & 0xf0000000) + S) >> 2)
+ When producing a fully linked file, the calculation is
+ let R = (((A < 2) | (P & 0xf0000000) + S) >> 2)
+ ((R & 0x1f0000) << 5) | ((R & 0x3e00000) >> 5) | (R & 0xffff) */
+
+ if (!info->relocateable)
+ /* Shuffle the bits according to the formula above. */
+ value = (((value & 0x1f0000) << 5)
+ | ((value & 0x3e00000) >> 5)
+ | (value & 0xffff));
- if (elf_section_data (input_section)->stab_info == NULL)
- outrel.r_offset = rel->r_offset;
- else
- {
- bfd_vma off;
-
- off = (_bfd_stab_section_offset
- (output_bfd, &elf_hash_table (info)->stab_info,
- input_section,
- &elf_section_data (input_section)->stab_info,
- rel->r_offset));
- if (off == (bfd_vma) -1)
- skip = true;
- outrel.r_offset = off;
- }
+ }
+ else if (r_type == R_MIPS16_GPREL)
+ {
+ /* R_MIPS16_GPREL is used for GP-relative addressing in mips16
+ mode. A typical instruction will have a format like this:
+
+ +--------------+--------------------------------+
+ ! EXTEND ! Imm 10:5 ! Imm 15:11 !
+ +--------------+--------------------------------+
+ ! Major ! rx ! ry ! Imm 4:0 !
+ +--------------+--------------------------------+
+
+ EXTEND is the five bit value 11110. Major is the instruction
+ opcode.
+
+ This is handled exactly like R_MIPS_GPREL16, except that the
+ addend is retrieved and stored as shown in this diagram; that
+ is, the Imm fields above replace the V-rel16 field.
+
+ All we need to do here is shuffle the bits appropriately. As
+ above, the two 16-bit halves must be swapped on a
+ little-endian system. */
+ value = (((value & 0x7e0) << 16)
+ | ((value & 0xf800) << 5)
+ | (value & 0x1f));
+ }
- outrel.r_offset += (input_section->output_section->vma
- + input_section->output_offset);
+ /* Set the field. */
+ x |= (value & howto->dst_mask);
- addend = bfd_get_32 (input_bfd, contents + rel->r_offset);
+ /* If required, turn JAL into JALX. */
+ if (require_jalx)
+ {
+ boolean ok;
+ bfd_vma opcode = x >> 26;
+ bfd_vma jalx_opcode;
- if (skip)
- memset (&outrel, 0, sizeof outrel);
- else if (h != NULL
- && (! info->symbolic
- || (h->elf_link_hash_flags
- & ELF_LINK_HASH_DEF_REGULAR) == 0))
- {
- BFD_ASSERT (h->dynindx != -1);
- outrel.r_info = ELF32_R_INFO (h->dynindx, R_MIPS_REL32);
- sec = input_section;
- }
- else
- {
- long indx;
+ /* Check to see if the opcode is already JAL or JALX. */
+ if (r_type == R_MIPS16_26)
+ {
+ ok = ((opcode == 0x6) || (opcode == 0x7));
+ jalx_opcode = 0x7;
+ }
+ else
+ {
+ ok = ((opcode == 0x3) || (opcode == 0x1d));
+ jalx_opcode = 0x1d;
+ }
- if (h == NULL)
- sec = local_sections[r_symndx];
- else
- {
- BFD_ASSERT (h->root.type == bfd_link_hash_defined
- || (h->root.type
- == bfd_link_hash_defweak));
- sec = h->root.u.def.section;
- }
- if (sec != NULL && bfd_is_abs_section (sec))
- indx = 0;
- else if (sec == NULL || sec->owner == NULL)
- {
- bfd_set_error (bfd_error_bad_value);
- return false;
- }
- else
- {
- asection *osec;
+ /* If the opcode is not JAL or JALX, there's a problem. */
+ if (!ok)
+ {
+ (*_bfd_error_handler)
+ (_("%s: %s+0x%lx: jump to stub routine which is not jal"),
+ bfd_get_filename (input_bfd),
+ input_section->name,
+ (unsigned long) relocation->r_offset);
+ bfd_set_error (bfd_error_bad_value);
+ return false;
+ }
- osec = sec->output_section;
- indx = elf_section_data (osec)->dynindx;
- if (indx == 0)
- abort ();
- }
+ /* Make this the JALX opcode. */
+ x = (x & ~(0x3f << 26)) | (jalx_opcode << 26);
+ }
- outrel.r_info = ELF32_R_INFO (indx, R_MIPS_REL32);
- addend += relocation;
- }
+ /* Swap the high- and low-order 16 bits on little-endian systems
+ when doing a MIPS16 relocation. */
+ if ((r_type == R_MIPS16_GPREL || r_type == R_MIPS16_26)
+ && bfd_little_endian (input_bfd))
+ x = (((x & 0xffff) << 16) | ((x & 0xffff0000) >> 16));
- if (! skip)
- bfd_put_32 (output_bfd, addend, contents + rel->r_offset);
+ /* Put the value into the output. */
+ bfd_put (8 * bfd_get_reloc_size (howto), input_bfd, x, location);
+ return true;
+}
- bfd_elf32_swap_reloc_out (output_bfd, &outrel,
- (((Elf32_External_Rel *)
- sreloc->contents)
- + sreloc->reloc_count));
- ++sreloc->reloc_count;
+/* Returns true if SECTION is a MIPS16 stub section. */
- if (! skip && SGI_COMPAT (output_bfd))
- {
- if (scpt == NULL)
- continue;
+static boolean
+mips_elf_stub_section_p (abfd, section)
+ bfd *abfd ATTRIBUTE_UNUSED;
+ asection *section;
+{
+ const char *name = bfd_get_section_name (abfd, section);
- /* Make an entry of compact relocation info. */
- mips_elf_set_cr_format (cptrel, CRF_MIPS_LONG);
- cptrel.vaddr = (rel->r_offset
- + input_section->output_section->vma
- + input_section->output_offset);
- if (r_type == R_MIPS_REL32)
- mips_elf_set_cr_type (cptrel, CRT_MIPS_REL32);
- else
- mips_elf_set_cr_type (cptrel, CRT_MIPS_WORD);
- mips_elf_set_cr_dist2to (cptrel, 0);
- cptrel.konst = addend;
-
- cr = (scpt->contents
- + sizeof (Elf32_External_compact_rel));
- bfd_elf32_swap_crinfo_out (output_bfd, &cptrel,
- ((Elf32_External_crinfo *) cr
- + scpt->reloc_count));
- ++scpt->reloc_count;
- }
+ return (strncmp (name, FN_STUB, sizeof FN_STUB - 1) == 0
+ || strncmp (name, CALL_STUB, sizeof CALL_STUB - 1) == 0
+ || strncmp (name, CALL_FP_STUB, sizeof CALL_FP_STUB - 1) == 0);
+}
- /* This reloc will be computed at runtime, so
- there's no need to do anything now. */
- continue;
- }
- else
- r = _bfd_final_link_relocate (howto, input_bfd, input_section,
- contents, rel->r_offset,
- relocation, addend);
- }
- else if (r_type == R_MIPS_64)
- {
- bfd_size_type addr;
- unsigned long val;
-
- /* Do a 32 bit relocation, and sign extend to 64 bits. */
- addr = rel->r_offset;
- if (bfd_big_endian (input_bfd))
- addr += 4;
- r = _bfd_final_link_relocate (howto, input_bfd, input_section,
- contents, addr, relocation,
- addend);
- val = bfd_get_32 (input_bfd, contents + addr);
- if ((val & 0x80000000) != 0)
- val = 0xffffffff;
- else
- val = 0;
- addr = rel->r_offset;
- if (bfd_little_endian (input_bfd))
- addr += 4;
- bfd_put_32 (input_bfd, val, contents + addr);
- }
- else if (r_type == R_MIPS_26 && other == STO_MIPS16)
+/* Relocate a MIPS ELF section. */
+
+boolean
+_bfd_mips_elf_relocate_section (output_bfd, info, input_bfd, input_section,
+ contents, relocs, local_syms, local_sections)
+ bfd *output_bfd;
+ struct bfd_link_info *info;
+ bfd *input_bfd;
+ asection *input_section;
+ bfd_byte *contents;
+ Elf_Internal_Rela *relocs;
+ Elf_Internal_Sym *local_syms;
+ asection **local_sections;
+{
+ Elf_Internal_Rela *rel;
+ const Elf_Internal_Rela *relend;
+ bfd_vma addend = 0;
+ boolean use_saved_addend_p = false;
+ struct elf_backend_data *bed;
+
+ bed = get_elf_backend_data (output_bfd);
+ relend = relocs + input_section->reloc_count * bed->s->int_rels_per_ext_rel;
+ for (rel = relocs; rel < relend; ++rel)
+ {
+ const char *name;
+ bfd_vma value;
+ reloc_howto_type *howto;
+ boolean require_jalx;
+ /* True if the relocation is a RELA relocation, rather than a
+ REL relocation. */
+ boolean rela_relocation_p = true;
+ int r_type = ELF32_R_TYPE (rel->r_info);
+
+ /* Find the relocation howto for this relocation. */
+ if (r_type == R_MIPS_64 && !ABI_64_P (output_bfd))
+ {
+ /* Some 32-bit code uses R_MIPS_64. In particular, people use
+ 64-bit code, but make sure all their addresses are in the
+ lowermost or uppermost 32-bit section of the 64-bit address
+ space. Thus, when they use an R_MIPS_64 they mean what is
+ usually meant by R_MIPS_32, with the exception that the
+ stored value is sign-extended to 64 bits. */
+ howto = elf_mips_howto_table + R_MIPS_32;
+
+ /* On big-endian systems, we need to lie about the position
+ of the reloc. */
+ if (bfd_big_endian (input_bfd))
+ rel->r_offset += 4;
+ }
+ else
+ howto = mips_rtype_to_howto (r_type);
+
+ if (!use_saved_addend_p)
+ {
+ Elf_Internal_Shdr *rel_hdr;
+
+ /* If these relocations were originally of the REL variety,
+ we must pull the addend out of the field that will be
+ relocated. Otherwise, we simply use the contents of the
+ RELA relocation. To determine which flavor or relocation
+ this is, we depend on the fact that the INPUT_SECTION's
+ REL_HDR is read before its REL_HDR2. */
+ rel_hdr = &elf_section_data (input_section)->rel_hdr;
+ if ((size_t) (rel - relocs)
+ >= (rel_hdr->sh_size / rel_hdr->sh_entsize
+ * bed->s->int_rels_per_ext_rel))
+ rel_hdr = elf_section_data (input_section)->rel_hdr2;
+ if (rel_hdr->sh_entsize == MIPS_ELF_REL_SIZE (input_bfd))
{
- unsigned long insn;
+ /* Note that this is a REL relocation. */
+ rela_relocation_p = false;
+
+ /* Get the addend, which is stored in the input file. */
+ addend = mips_elf_obtain_contents (howto,
+ rel,
+ input_bfd,
+ contents);
+ addend &= howto->src_mask;
+
+ /* For some kinds of relocations, the ADDEND is a
+ combination of the addend stored in two different
+ relocations. */
+ if (r_type == R_MIPS_HI16
+ || r_type == R_MIPS_GNU_REL_HI16
+ || (r_type == R_MIPS_GOT16
+ && mips_elf_local_relocation_p (input_bfd, rel,
+ local_sections, false)))
+ {
+ bfd_vma l;
+ const Elf_Internal_Rela *lo16_relocation;
+ reloc_howto_type *lo16_howto;
+ int lo;
+
+ /* The combined value is the sum of the HI16 addend,
+ left-shifted by sixteen bits, and the LO16
+ addend, sign extended. (Usually, the code does
+ a `lui' of the HI16 value, and then an `addiu' of
+ the LO16 value.)
+
+ Scan ahead to find a matching LO16 relocation. */
+ if (r_type == R_MIPS_GNU_REL_HI16)
+ lo = R_MIPS_GNU_REL_LO16;
+ else
+ lo = R_MIPS_LO16;
+ lo16_relocation
+ = mips_elf_next_relocation (lo, rel, relend);
+ if (lo16_relocation == NULL)
+ return false;
- /* This is a jump to a mips16 routine from a mips32
- routine. We need to change jal into jalx. */
- insn = bfd_get_32 (input_bfd, contents + rel->r_offset);
- if (((insn >> 26) & 0x3f) != 0x3
- && ((insn >> 26) & 0x3f) != 0x1d)
+ /* Obtain the addend kept there. */
+ lo16_howto = mips_rtype_to_howto (lo);
+ l = mips_elf_obtain_contents (lo16_howto,
+ lo16_relocation,
+ input_bfd, contents);
+ l &= lo16_howto->src_mask;
+ l = mips_elf_sign_extend (l, 16);
+
+ addend <<= 16;
+
+ /* Compute the combined addend. */
+ addend += l;
+ }
+ else if (r_type == R_MIPS16_GPREL)
{
- (*_bfd_error_handler)
- (_("%s: %s+0x%lx: jump to mips16 routine which is not jal"),
- bfd_get_filename (input_bfd),
- input_section->name,
- (unsigned long) rel->r_offset);
- bfd_set_error (bfd_error_bad_value);
- return false;
+ /* The addend is scrambled in the object file. See
+ mips_elf_perform_relocation for details on the
+ format. */
+ addend = (((addend & 0x1f0000) >> 5)
+ | ((addend & 0x7e00000) >> 16)
+ | (addend & 0x1f));
}
- insn = (insn & 0x3ffffff) | (0x1d << 26);
- bfd_put_32 (input_bfd, insn, contents + rel->r_offset);
- r = _bfd_final_link_relocate (howto, input_bfd, input_section,
- contents, rel->r_offset,
- relocation, addend);
}
- else if (r_type == R_MIPS16_26)
+ else
+ addend = rel->r_addend;
+ }
+
+ if (info->relocateable)
+ {
+ Elf_Internal_Sym *sym;
+ unsigned long r_symndx;
+
+ if (r_type == R_MIPS_64 && !ABI_64_P (output_bfd)
+ && bfd_big_endian (input_bfd))
+ rel->r_offset -= 4;
+
+ /* Since we're just relocating, all we need to do is copy
+ the relocations back out to the object file, unless
+ they're against a section symbol, in which case we need
+ to adjust by the section offset, or unless they're GP
+ relative in which case we need to adjust by the amount
+ that we're adjusting GP in this relocateable object. */
+
+ if (!mips_elf_local_relocation_p (input_bfd, rel, local_sections,
+ false))
+ /* There's nothing to do for non-local relocations. */
+ continue;
+
+ if (r_type == R_MIPS16_GPREL
+ || r_type == R_MIPS_GPREL16
+ || r_type == R_MIPS_GPREL32
+ || r_type == R_MIPS_LITERAL)
+ addend -= (_bfd_get_gp_value (output_bfd)
+ - _bfd_get_gp_value (input_bfd));
+ else if (r_type == R_MIPS_26 || r_type == R_MIPS16_26
+ || r_type == R_MIPS_GNU_REL16_S2)
+ /* The addend is stored without its two least
+ significant bits (which are always zero.) In a
+ non-relocateable link, calculate_relocation will do
+ this shift; here, we must do it ourselves. */
+ addend <<= 2;
+
+ r_symndx = ELF32_R_SYM (rel->r_info);
+ sym = local_syms + r_symndx;
+ if (ELF_ST_TYPE (sym->st_info) == STT_SECTION)
+ /* Adjust the addend appropriately. */
+ addend += local_sections[r_symndx]->output_offset;
+
+ /* If the relocation is for a R_MIPS_HI16 or R_MIPS_GOT16,
+ then we only want to write out the high-order 16 bits.
+ The subsequent R_MIPS_LO16 will handle the low-order bits. */
+ if (r_type == R_MIPS_HI16 || r_type == R_MIPS_GOT16
+ || r_type == R_MIPS_GNU_REL_HI16)
+ addend = mips_elf_high (addend);
+ /* If the relocation is for an R_MIPS_26 relocation, then
+ the two low-order bits are not stored in the object file;
+ they are implicitly zero. */
+ else if (r_type == R_MIPS_26 || r_type == R_MIPS16_26
+ || r_type == R_MIPS_GNU_REL16_S2)
+ addend >>= 2;
+
+ if (rela_relocation_p)
+ /* If this is a RELA relocation, just update the addend.
+ We have to cast away constness for REL. */
+ rel->r_addend = addend;
+ else
{
- /* It's easiest to do the normal relocation, and then
- dig out the instruction and swap the first word the
- way the mips16 expects it. If this is little endian,
- though, we need to swap the two words first, and then
- swap them back again later, so that the address looks
- right. */
-
- if (bfd_little_endian (input_bfd))
+ /* Otherwise, we have to write the value back out. Note
+ that we use the source mask, rather than the
+ destination mask because the place to which we are
+ writing will be source of the addend in the final
+ link. */
+ addend &= howto->src_mask;
+
+ if (r_type == R_MIPS_64 && !ABI_64_P (output_bfd))
+ /* See the comment above about using R_MIPS_64 in the 32-bit
+ ABI. Here, we need to update the addend. It would be
+ possible to get away with just using the R_MIPS_32 reloc
+ but for endianness. */
{
- unsigned long insn;
-
- insn = bfd_get_32 (input_bfd, contents + rel->r_offset);
- insn = ((insn >> 16) & 0xffff) | ((insn & 0xffff) << 16);
- bfd_put_32 (input_bfd, insn, contents + rel->r_offset);
- }
+ bfd_vma sign_bits;
+ bfd_vma low_bits;
+ bfd_vma high_bits;
- r = _bfd_final_link_relocate (howto, input_bfd, input_section,
- contents, rel->r_offset,
- relocation, addend);
- if (r == bfd_reloc_ok)
- {
- unsigned long insn;
+ if (addend & ((bfd_vma) 1 << 31))
+ sign_bits = ((bfd_vma) 1 << 32) - 1;
+ else
+ sign_bits = 0;
- if (bfd_little_endian (input_bfd))
+ /* If we don't know that we have a 64-bit type,
+ do two separate stores. */
+ if (bfd_big_endian (input_bfd))
{
- insn = bfd_get_32 (input_bfd, contents + rel->r_offset);
- insn = ((insn >> 16) & 0xffff) | ((insn & 0xffff) << 16);
- bfd_put_32 (input_bfd, insn, contents + rel->r_offset);
+ /* Store the sign-bits (which are most significant)
+ first. */
+ low_bits = sign_bits;
+ high_bits = addend;
}
-
- insn = bfd_get_16 (input_bfd, contents + rel->r_offset);
- insn = ((insn & 0xfc00)
- | ((insn & 0x1f) << 5)
- | ((insn & 0x3e0) >> 5));
- /* If this is a jump to a 32 bit routine, then make
- it jalx. */
- if (other != STO_MIPS16)
- insn |= 0x400;
- bfd_put_16 (input_bfd, insn, contents + rel->r_offset);
- }
- }
- else if (r_type == R_MIPS16_GPREL)
- {
- unsigned short extend, insn;
- bfd_byte buf[4];
- unsigned long final;
-
- /* Extract the addend into buf, run the regular reloc,
- and stuff the resulting value back into the
- instructions. */
- if (rel->r_offset > input_section->_raw_size)
- r = bfd_reloc_outofrange;
- else
- {
- extend = bfd_get_16 (input_bfd, contents + rel->r_offset);
- insn = bfd_get_16 (input_bfd, contents + rel->r_offset + 2);
- bfd_put_32 (input_bfd,
- (((extend & 0x1f) << 11)
- | (extend & 0x7e0)
- | (insn & 0x1f)),
- buf);
- r = _bfd_final_link_relocate (howto, input_bfd,
- input_section, buf,
- (bfd_vma) 0, relocation,
- addend);
- final = bfd_get_32 (input_bfd, buf);
- bfd_put_16 (input_bfd,
- ((extend & 0xf800)
- | ((final >> 11) & 0x1f)
- | (final & 0x7e0)),
+ else
+ {
+ low_bits = addend;
+ high_bits = sign_bits;
+ }
+ bfd_put_32 (input_bfd, low_bits,
contents + rel->r_offset);
- bfd_put_16 (input_bfd,
- ((insn & 0xffe0)
- | (final & 0x1f)),
- contents + rel->r_offset + 2);
+ bfd_put_32 (input_bfd, high_bits,
+ contents + rel->r_offset + 4);
+ continue;
}
- }
- else
- r = _bfd_final_link_relocate (howto, input_bfd, input_section,
- contents, rel->r_offset,
- relocation, addend);
-
- /* The jal instruction can only jump to an address which is
- divisible by 4, and it can only jump to an address with
- the same upper 4 bits as the PC. */
- if (r == bfd_reloc_ok
- && (r_type == R_MIPS16_26 || r_type == R_MIPS_26))
- {
- bfd_vma addr;
- bfd_vma pc;
- bfd_vma target;
-
- pc = ((input_section->output_section->vma
- + input_section->output_offset
- + rel->r_offset)
- & 0xf0000000);
- target = bfd_get_32 (input_bfd, contents + rel->r_offset)
- & (howto->dst_mask);
- addr = (target << 2) + pc;
- if (other == STO_MIPS16)
- addr &= ~ (bfd_vma) 1;
- if ((addr & 3) != 0
- || ((addr & 0xf0000000)
- != pc))
- r = bfd_reloc_overflow;
+
+ if (!mips_elf_perform_relocation (info, howto, rel, addend,
+ input_bfd, input_section,
+ contents, false))
+ return false;
}
- /* Don't bother to report a relocation overflow for a call
- to a weak undefined symbol with a value of zero. This
- permits us to use
- if (!f) f();
- even if we aren't in range to call address zero. */
- if (r == bfd_reloc_overflow
- && (r_type == R_MIPS16_26 || r_type == R_MIPS_26)
- && relocation + addend == 0
- && h != NULL
- && h->root.type == bfd_link_hash_undefweak)
- r = bfd_reloc_ok;
-
- /* If we've already issued an error for an undefined symbol,
- don't issue another useless error. */
- if (undefined_error
- && (r == bfd_reloc_undefined || r == bfd_reloc_overflow))
- r = bfd_reloc_ok;
-
- if (SGI_COMPAT (abfd)
- && scpt != NULL
- && (input_section->flags & SEC_ALLOC) != 0)
- {
- Elf32_crinfo cptrel;
- bfd_byte *cr;
+ /* Go on to the next relocation. */
+ continue;
+ }
- /* Make an entry of compact relocation info. */
- mips_elf_set_cr_format (cptrel, CRF_MIPS_LONG);
- cptrel.vaddr = (rel->r_offset
- + input_section->output_section->vma
- + input_section->output_offset);
+ /* In the N32 and 64-bit ABIs there may be multiple consecutive
+ relocations for the same offset. In that case we are
+ supposed to treat the output of each relocation as the addend
+ for the next. */
+ if (rel + 1 < relend
+ && rel->r_offset == rel[1].r_offset
+ && ELF32_R_TYPE (rel[1].r_info) != R_MIPS_NONE)
+ use_saved_addend_p = true;
+ else
+ use_saved_addend_p = false;
+
+ /* Figure out what value we are supposed to relocate. */
+ switch (mips_elf_calculate_relocation (output_bfd,
+ input_bfd,
+ input_section,
+ info,
+ rel,
+ addend,
+ howto,
+ local_syms,
+ local_sections,
+ &value,
+ &name,
+ &require_jalx))
+ {
+ case bfd_reloc_continue:
+ /* There's nothing to do. */
+ continue;
- switch (r_type)
- {
- case R_MIPS_26:
- mips_elf_set_cr_type (cptrel, CRT_MIPS_JMPAD);
- /* XXX How should we set dist2to in this case. */
- mips_elf_set_cr_dist2to (cptrel, 8);
- cptrel.konst = addend + relocation;
- cr = scpt->contents + sizeof (Elf32_External_compact_rel);
- bfd_elf32_swap_crinfo_out (output_bfd, &cptrel,
- ((Elf32_External_crinfo *) cr
- + scpt->reloc_count));
- ++scpt->reloc_count;
- break;
+ case bfd_reloc_undefined:
+ /* mips_elf_calculate_relocation already called the
+ undefined_symbol callback. There's no real point in
+ trying to perform the relocation at this point, so we
+ just skip ahead to the next relocation. */
+ continue;
- case R_MIPS_GPREL16:
- case R_MIPS_LITERAL:
- case R_MIPS_GPREL32:
- mips_elf_set_cr_type (cptrel, CRT_MIPS_GPHI_LO);
- cptrel.konst = gp - cptrel.vaddr;
- mips_elf_set_cr_dist2to (cptrel, 4);
- cr = scpt->contents + sizeof (Elf32_External_compact_rel);
- bfd_elf32_swap_crinfo_out (output_bfd, &cptrel,
- ((Elf32_External_crinfo *) cr
- + scpt->reloc_count));
- ++scpt->reloc_count;
- break;
+ case bfd_reloc_notsupported:
+ abort ();
+ break;
- default:
- break;
- }
+ case bfd_reloc_overflow:
+ if (use_saved_addend_p)
+ /* Ignore overflow until we reach the last relocation for
+ a given location. */
+ ;
+ else
+ {
+ BFD_ASSERT (name != NULL);
+ if (! ((*info->callbacks->reloc_overflow)
+ (info, name, howto->name, (bfd_vma) 0,
+ input_bfd, input_section, rel->r_offset)))
+ return false;
}
+ break;
+
+ case bfd_reloc_ok:
+ break;
+
+ default:
+ abort ();
+ break;
+ }
+
+ /* If we've got another relocation for the address, keep going
+ until we reach the last one. */
+ if (use_saved_addend_p)
+ {
+ addend = value;
+ continue;
}
- if (r != bfd_reloc_ok)
+ if (r_type == R_MIPS_64 && !ABI_64_P (output_bfd))
+ /* See the comment above about using R_MIPS_64 in the 32-bit
+ ABI. Until now, we've been using the HOWTO for R_MIPS_32;
+ that calculated the right value. Now, however, we
+ sign-extend the 32-bit result to 64-bits, and store it as a
+ 64-bit value. We are especially generous here in that we
+ go to extreme lengths to support this usage on systems with
+ only a 32-bit VMA. */
{
- switch (r)
+ bfd_vma sign_bits;
+ bfd_vma low_bits;
+ bfd_vma high_bits;
+
+ if (value & ((bfd_vma) 1 << 31))
+ sign_bits = ((bfd_vma) 1 << 32) - 1;
+ else
+ sign_bits = 0;
+
+ /* If we don't know that we have a 64-bit type,
+ do two separate stores. */
+ if (bfd_big_endian (input_bfd))
{
- default:
- case bfd_reloc_outofrange:
- abort ();
- case bfd_reloc_overflow:
- {
- const char *name;
-
- if (h != NULL)
- name = h->root.root.string;
- else
- {
- name = bfd_elf_string_from_elf_section (input_bfd,
- symtab_hdr->sh_link,
- sym->st_name);
- if (name == NULL)
- return false;
- if (*name == '\0')
- name = bfd_section_name (input_bfd, sec);
- }
- if (! ((*info->callbacks->reloc_overflow)
- (info, name, howto->name, (bfd_vma) 0,
- input_bfd, input_section, rel->r_offset)))
- return false;
- }
- break;
+ /* Undo what we did above. */
+ rel->r_offset -= 4;
+ /* Store the sign-bits (which are most significant)
+ first. */
+ low_bits = sign_bits;
+ high_bits = value;
+ }
+ else
+ {
+ low_bits = value;
+ high_bits = sign_bits;
}
+ bfd_put_32 (input_bfd, low_bits,
+ contents + rel->r_offset);
+ bfd_put_32 (input_bfd, high_bits,
+ contents + rel->r_offset + 4);
+ continue;
}
+
+ /* Actually perform the relocation. */
+ if (!mips_elf_perform_relocation (info, howto, rel, value, input_bfd,
+ input_section, contents,
+ require_jalx))
+ return false;
}
return true;
symbol. We mark symbols as small common if appropriate. This is
also where we undo the increment of the value for a mips16 symbol. */
-/*ARGSIGNORED*/
-static boolean
-mips_elf_link_output_symbol_hook (abfd, info, name, sym, input_sec)
- bfd *abfd;
- struct bfd_link_info *info;
- const char *name;
+boolean
+_bfd_mips_elf_link_output_symbol_hook (abfd, info, name, sym, input_sec)
+ bfd *abfd ATTRIBUTE_UNUSED;
+ struct bfd_link_info *info ATTRIBUTE_UNUSED;
+ const char *name ATTRIBUTE_UNUSED;
Elf_Internal_Sym *sym;
asection *input_sec;
{
/* The name of the dynamic interpreter. This is put in the .interp
section. */
-#define ELF_DYNAMIC_INTERPRETER "/usr/lib/libc.so.1"
+#define ELF_DYNAMIC_INTERPRETER(abfd) \
+ (ABI_N32_P (abfd) ? "/usr/lib32/libc.so.1" \
+ : ABI_64_P (abfd) ? "/usr/lib64/libc.so.1" \
+ : "/usr/lib/libc.so.1")
/* Create dynamic sections when linking against a dynamic object. */
-static boolean
-mips_elf_create_dynamic_sections (abfd, info)
+boolean
+_bfd_mips_elf_create_dynamic_sections (abfd, info)
bfd *abfd;
struct bfd_link_info *info;
{
if (! mips_elf_create_got_section (abfd, info))
return false;
+ /* Create the .msym section on IRIX6. It is used by the dynamic
+ linker to speed up dynamic relocations, and to avoid computing
+ the ELF hash for symbols. */
+ if (IRIX_COMPAT (abfd) == ict_irix6
+ && !mips_elf_create_msym_section (abfd))
+ return false;
+
/* Create .stub section. */
- if (bfd_get_section_by_name (abfd, ".stub") == NULL)
+ if (bfd_get_section_by_name (abfd,
+ MIPS_ELF_STUB_SECTION_NAME (abfd)) == NULL)
{
- s = bfd_make_section (abfd, ".stub");
+ s = bfd_make_section (abfd, MIPS_ELF_STUB_SECTION_NAME (abfd));
if (s == NULL
- || ! bfd_set_section_flags (abfd, s, flags)
- || ! bfd_set_section_alignment (abfd, s, 2))
+ || ! bfd_set_section_flags (abfd, s, flags | SEC_CODE)
+ || ! bfd_set_section_alignment (abfd, s,
+ MIPS_ELF_LOG_FILE_ALIGN (abfd)))
return false;
}
- if (SGI_COMPAT (abfd)
+ if ((IRIX_COMPAT (abfd) == ict_irix5 || IRIX_COMPAT (abfd) == ict_none)
&& !info->shared
&& bfd_get_section_by_name (abfd, ".rld_map") == NULL)
{
s = bfd_make_section (abfd, ".rld_map");
if (s == NULL
|| ! bfd_set_section_flags (abfd, s, flags & ~SEC_READONLY)
- || ! bfd_set_section_alignment (abfd, s, 2))
+ || ! bfd_set_section_alignment (abfd, s,
+ MIPS_ELF_LOG_FILE_ALIGN (abfd)))
return false;
}
- if (SGI_COMPAT (abfd))
+ /* On IRIX5, we adjust add some additional symbols and change the
+ alignments of several sections. There is no ABI documentation
+ indicating that this is necessary on IRIX6, nor any evidence that
+ the linker takes such action. */
+ if (IRIX_COMPAT (abfd) == ict_irix5)
{
for (namep = mips_elf_dynsym_rtproc_names; *namep != NULL; namep++)
{
get_elf_backend_data (abfd)->collect,
(struct bfd_link_hash_entry **) &h)))
return false;
- h->elf_link_hash_flags &=~ ELF_LINK_NON_ELF;
+ h->elf_link_hash_flags &= ~ELF_LINK_NON_ELF;
h->elf_link_hash_flags |= ELF_LINK_HASH_DEF_REGULAR;
h->type = STT_SECTION;
}
/* We need to create a .compact_rel section. */
- if (! mips_elf_create_compact_rel_section (abfd, info))
- return false;
+ if (SGI_COMPAT (abfd))
+ {
+ if (!mips_elf_create_compact_rel_section (abfd, info))
+ return false;
+ }
/* Change aligments of some sections. */
s = bfd_get_section_by_name (abfd, ".hash");
if (!info->shared)
{
h = NULL;
- if (! (_bfd_generic_link_add_one_symbol
- (info, abfd, "_DYNAMIC_LINK", BSF_GLOBAL, bfd_abs_section_ptr,
- (bfd_vma) 0, (const char *) NULL, false,
- get_elf_backend_data (abfd)->collect,
- (struct bfd_link_hash_entry **) &h)))
- return false;
- h->elf_link_hash_flags &=~ ELF_LINK_NON_ELF;
+ if (SGI_COMPAT (abfd))
+ {
+ if (!(_bfd_generic_link_add_one_symbol
+ (info, abfd, "_DYNAMIC_LINK", BSF_GLOBAL, bfd_abs_section_ptr,
+ (bfd_vma) 0, (const char *) NULL, false,
+ get_elf_backend_data (abfd)->collect,
+ (struct bfd_link_hash_entry **) &h)))
+ return false;
+ }
+ else
+ {
+ /* For normal mips it is _DYNAMIC_LINKING. */
+ if (!(_bfd_generic_link_add_one_symbol
+ (info, abfd, "_DYNAMIC_LINKING", BSF_GLOBAL,
+ bfd_abs_section_ptr, (bfd_vma) 0, (const char *) NULL, false,
+ get_elf_backend_data (abfd)->collect,
+ (struct bfd_link_hash_entry **) &h)))
+ return false;
+ }
+ h->elf_link_hash_flags &= ~ELF_LINK_NON_ELF;
h->elf_link_hash_flags |= ELF_LINK_HASH_DEF_REGULAR;
h->type = STT_SECTION;
BFD_ASSERT (s != NULL);
h = NULL;
- if (! (_bfd_generic_link_add_one_symbol
- (info, abfd, "__rld_map", BSF_GLOBAL, s,
- (bfd_vma) 0, (const char *) NULL, false,
- get_elf_backend_data (abfd)->collect,
- (struct bfd_link_hash_entry **) &h)))
- return false;
- h->elf_link_hash_flags &=~ ELF_LINK_NON_ELF;
+ if (SGI_COMPAT (abfd))
+ {
+ if (!(_bfd_generic_link_add_one_symbol
+ (info, abfd, "__rld_map", BSF_GLOBAL, s,
+ (bfd_vma) 0, (const char *) NULL, false,
+ get_elf_backend_data (abfd)->collect,
+ (struct bfd_link_hash_entry **) &h)))
+ return false;
+ }
+ else
+ {
+ /* For normal mips the symbol is __RLD_MAP. */
+ if (!(_bfd_generic_link_add_one_symbol
+ (info, abfd, "__RLD_MAP", BSF_GLOBAL, s,
+ (bfd_vma) 0, (const char *) NULL, false,
+ get_elf_backend_data (abfd)->collect,
+ (struct bfd_link_hash_entry **) &h)))
+ return false;
+ }
+ h->elf_link_hash_flags &= ~ELF_LINK_NON_ELF;
h->elf_link_hash_flags |= ELF_LINK_HASH_DEF_REGULAR;
h->type = STT_OBJECT;
static boolean
mips_elf_create_compact_rel_section (abfd, info)
bfd *abfd;
- struct bfd_link_info *info;
+ struct bfd_link_info *info ATTRIBUTE_UNUSED;
{
flagword flags;
register asection *s;
s = bfd_make_section (abfd, ".compact_rel");
if (s == NULL
|| ! bfd_set_section_flags (abfd, s, flags)
- || ! bfd_set_section_alignment (abfd, s, 2))
+ || ! bfd_set_section_alignment (abfd, s,
+ MIPS_ELF_LOG_FILE_ALIGN (abfd)))
return false;
s->_raw_size = sizeof (Elf32_External_compact_rel);
return true;
}
-/* Create the .got section to hold the global offset table. */
+/* Create the .got section to hold the global offset table. */
static boolean
mips_elf_create_got_section (abfd, info)
struct mips_got_info *g;
/* This function may be called more than once. */
- if (bfd_get_section_by_name (abfd, ".got") != NULL)
+ if (mips_elf_got_section (abfd))
return true;
flags = (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS | SEC_IN_MEMORY
get_elf_backend_data (abfd)->collect,
(struct bfd_link_hash_entry **) &h)))
return false;
- h->elf_link_hash_flags &=~ ELF_LINK_NON_ELF;
+ h->elf_link_hash_flags &= ~ELF_LINK_NON_ELF;
h->elf_link_hash_flags |= ELF_LINK_HASH_DEF_REGULAR;
h->type = STT_OBJECT;
return false;
/* The first several global offset table entries are reserved. */
- s->_raw_size = MIPS_RESERVED_GOTNO * 4;
+ s->_raw_size = MIPS_RESERVED_GOTNO * MIPS_ELF_GOT_SIZE (abfd);
g = (struct mips_got_info *) bfd_alloc (abfd,
sizeof (struct mips_got_info));
if (g == NULL)
return false;
- g->global_gotsym = 0;
+ g->global_gotsym = NULL;
g->local_gotno = MIPS_RESERVED_GOTNO;
g->assigned_gotno = MIPS_RESERVED_GOTNO;
if (elf_section_data (s) == NULL)
return false;
}
elf_section_data (s)->tdata = (PTR) g;
+ elf_section_data (s)->this_hdr.sh_flags
+ |= SHF_ALLOC | SHF_WRITE | SHF_MIPS_GPREL;
return true;
}
+/* Returns the .msym section for ABFD, creating it if it does not
+ already exist. Returns NULL to indicate error. */
+
+static asection *
+mips_elf_create_msym_section (abfd)
+ bfd *abfd;
+{
+ asection *s;
+
+ s = bfd_get_section_by_name (abfd, MIPS_ELF_MSYM_SECTION_NAME (abfd));
+ if (!s)
+ {
+ s = bfd_make_section (abfd, MIPS_ELF_MSYM_SECTION_NAME (abfd));
+ if (!s
+ || !bfd_set_section_flags (abfd, s,
+ SEC_ALLOC
+ | SEC_LOAD
+ | SEC_HAS_CONTENTS
+ | SEC_LINKER_CREATED
+ | SEC_READONLY)
+ || !bfd_set_section_alignment (abfd, s,
+ MIPS_ELF_LOG_FILE_ALIGN (abfd)))
+ return NULL;
+ }
+
+ return s;
+}
+
+/* Add room for N relocations to the .rel.dyn section in ABFD. */
+
+static void
+mips_elf_allocate_dynamic_relocations (abfd, n)
+ bfd *abfd;
+ unsigned int n;
+{
+ asection *s;
+
+ s = bfd_get_section_by_name (abfd, MIPS_ELF_REL_DYN_SECTION_NAME (abfd));
+ BFD_ASSERT (s != NULL);
+
+ if (s->_raw_size == 0)
+ {
+ /* Make room for a null element. */
+ s->_raw_size += MIPS_ELF_REL_SIZE (abfd);
+ ++s->reloc_count;
+ }
+ s->_raw_size += n * MIPS_ELF_REL_SIZE (abfd);
+}
+
/* Look through the relocs for a section during the first phase, and
allocate space in the global offset table. */
-static boolean
-mips_elf_check_relocs (abfd, info, sec, relocs)
+boolean
+_bfd_mips_elf_check_relocs (abfd, info, sec, relocs)
bfd *abfd;
struct bfd_link_info *info;
asection *sec;
const Elf_Internal_Rela *rel_end;
asection *sgot;
asection *sreloc;
+ struct elf_backend_data *bed;
if (info->relocateable)
return true;
}
/* Record this stub in an array of local symbol stubs for
- this BFD. */
+ this BFD. */
if (elf_tdata (abfd)->local_stubs == NULL)
{
unsigned long symcount;
asection **n;
if (elf_bad_symtab (abfd))
- symcount = symtab_hdr->sh_size / sizeof (Elf32_External_Sym);
+ symcount = symtab_hdr->sh_size / symtab_hdr->sh_entsize;
else
symcount = symtab_hdr->sh_info;
n = (asection **) bfd_zalloc (abfd,
}
else
{
- sgot = bfd_get_section_by_name (dynobj, ".got");
+ sgot = mips_elf_got_section (dynobj);
if (sgot == NULL)
g = NULL;
else
}
sreloc = NULL;
-
- rel_end = relocs + sec->reloc_count;
- for (rel = relocs; rel < rel_end; rel++)
+ bed = get_elf_backend_data (abfd);
+ rel_end = relocs + sec->reloc_count * bed->s->int_rels_per_ext_rel;
+ for (rel = relocs; rel < rel_end; ++rel)
{
unsigned long r_symndx;
+ int r_type;
struct elf_link_hash_entry *h;
r_symndx = ELF32_R_SYM (rel->r_info);
+ r_type = ELF32_R_TYPE (rel->r_info);
if (r_symndx < extsymoff)
h = NULL;
+ else if (r_symndx >= extsymoff + (symtab_hdr->sh_size / symtab_hdr->sh_entsize))
+ {
+ (*_bfd_error_handler)
+ (_("Malformed reloc detected for section %s"), name);
+ bfd_set_error (bfd_error_bad_value);
+ return false;
+ }
else
{
h = sym_hashes[r_symndx - extsymoff];
/* Some relocs require a global offset table. */
if (dynobj == NULL || sgot == NULL)
{
- switch (ELF32_R_TYPE (rel->r_info))
+ switch (r_type)
{
case R_MIPS_GOT16:
case R_MIPS_CALL16:
case R_MIPS_CALL_LO16:
case R_MIPS_GOT_HI16:
case R_MIPS_GOT_LO16:
+ case R_MIPS_GOT_PAGE:
+ case R_MIPS_GOT_OFST:
+ case R_MIPS_GOT_DISP:
if (dynobj == NULL)
elf_hash_table (info)->dynobj = dynobj = abfd;
if (! mips_elf_create_got_section (dynobj, info))
return false;
- sgot = bfd_get_section_by_name (dynobj, ".got");
- BFD_ASSERT (sgot != NULL);
- BFD_ASSERT (elf_section_data (sgot) != NULL);
- g = (struct mips_got_info *) elf_section_data (sgot)->tdata;
- BFD_ASSERT (g != NULL);
+ g = mips_elf_got_info (dynobj, &sgot);
break;
case R_MIPS_32:
case R_MIPS_REL32:
+ case R_MIPS_64:
if (dynobj == NULL
&& (info->shared || h != NULL)
&& (sec->flags & SEC_ALLOC) != 0)
}
}
- switch (ELF32_R_TYPE (rel->r_info))
+ if (!h && (r_type == R_MIPS_CALL_LO16
+ || r_type == R_MIPS_GOT_LO16
+ || r_type == R_MIPS_GOT_DISP))
{
- case R_MIPS_CALL16:
- case R_MIPS_CALL_HI16:
- case R_MIPS_CALL_LO16:
- /* This symbol requires a global offset table entry. */
+ /* We may need a local GOT entry for this relocation. We
+ don't count R_MIPS_GOT_PAGE because we can estimate the
+ maximum number of pages needed by looking at the size of
+ the segment. Similar comments apply to R_MIPS_GOT16. We
+ don't count R_MIPS_GOT_HI16, or R_MIPS_CALL_HI16 because
+ these are always followed by an R_MIPS_GOT_LO16 or
+ R_MIPS_CALL_LO16.
+
+ This estimation is very conservative since we can merge
+ duplicate entries in the GOT. In order to be less
+ conservative, we could actually build the GOT here,
+ rather than in relocate_section. */
+ g->local_gotno++;
+ sgot->_raw_size += MIPS_ELF_GOT_SIZE (dynobj);
+ }
+ switch (r_type)
+ {
+ case R_MIPS_CALL16:
if (h == NULL)
{
(*_bfd_error_handler)
bfd_set_error (bfd_error_bad_value);
return false;
}
+ /* Fall through. */
- /* Make sure this symbol is output as a dynamic symbol. */
- if (h->dynindx == -1)
+ case R_MIPS_CALL_HI16:
+ case R_MIPS_CALL_LO16:
+ if (h != NULL)
{
- if (! bfd_elf32_link_record_dynamic_symbol (info, h))
+ /* This symbol requires a global offset table entry. */
+ if (!mips_elf_record_global_got_symbol (h, info, g))
return false;
- }
- if (h->got.offset != (bfd_vma) -1)
- {
- /* We have already allocated space in the .got. */
- break;
+ /* We need a stub, not a plt entry for the undefined
+ function. But we record it as if it needs plt. See
+ elf_adjust_dynamic_symbol in elflink.h. */
+ h->elf_link_hash_flags |= ELF_LINK_HASH_NEEDS_PLT;
+ h->type = STT_FUNC;
}
-
- /* Note the index of the first global got symbol in .dynsym. */
- if (g->global_gotsym == 0
- || g->global_gotsym > (unsigned long) h->dynindx)
- g->global_gotsym = h->dynindx;
-
- /* Make this symbol to have the corresponding got entry. */
- h->got.offset = 0;
-
- /* We need a stub, not a plt entry for the undefined
- function. But we record it as if it needs plt. See
- elf_adjust_dynamic_symbol in elflink.h. */
- h->elf_link_hash_flags |= ELF_LINK_HASH_NEEDS_PLT;
- h->type = STT_FUNC;
-
break;
case R_MIPS_GOT16:
case R_MIPS_GOT_HI16:
case R_MIPS_GOT_LO16:
+ case R_MIPS_GOT_DISP:
/* This symbol requires a global offset table entry. */
-
- if (h != NULL)
- {
- /* Make sure this symbol is output as a dynamic symbol. */
- if (h->dynindx == -1)
- {
- if (! bfd_elf32_link_record_dynamic_symbol (info, h))
- return false;
- }
-
- if (h->got.offset != (bfd_vma) -1)
- {
- /* We have already allocated space in the .got. */
- break;
- }
- /* Note the index of the first global got symbol in
- .dynsym. */
- if (g->global_gotsym == 0
- || g->global_gotsym > (unsigned long) h->dynindx)
- g->global_gotsym = h->dynindx;
-
- /* Make this symbol to be the global got symbol. */
- h->got.offset = 0;
- }
-
+ if (h && !mips_elf_record_global_got_symbol (h, info, g))
+ return false;
break;
case R_MIPS_32:
case R_MIPS_REL32:
+ case R_MIPS_64:
if ((info->shared || h != NULL)
&& (sec->flags & SEC_ALLOC) != 0)
{
if (sreloc == NULL)
{
- const char *name = ".rel.dyn";
+ const char *name = MIPS_ELF_REL_DYN_SECTION_NAME (dynobj);
sreloc = bfd_get_section_by_name (dynobj, name);
if (sreloc == NULL)
}
}
if (info->shared)
- {
- /* When creating a shared object, we must copy these
- reloc types into the output file as R_MIPS_REL32
- relocs. We make room for this reloc in the
- .rel.dyn reloc section */
- if (sreloc->_raw_size == 0)
- {
- /* Add a null element. */
- sreloc->_raw_size += sizeof (Elf32_External_Rel);
- ++sreloc->reloc_count;
- }
- sreloc->_raw_size += sizeof (Elf32_External_Rel);
- }
+ /* When creating a shared object, we must copy these
+ reloc types into the output file as R_MIPS_REL32
+ relocs. We make room for this reloc in the
+ .rel.dyn reloc section. */
+ mips_elf_allocate_dynamic_relocations (dynobj, 1);
else
{
struct mips_elf_link_hash_entry *hmips;
/* We only need to copy this reloc if the symbol is
defined in a dynamic object. */
hmips = (struct mips_elf_link_hash_entry *) h;
- ++hmips->mips_32_relocs;
+ ++hmips->possibly_dynamic_relocs;
}
+
+ /* Even though we don't directly need a GOT entry for
+ this symbol, a symbol must have a dynamic symbol
+ table index greater that DT_MIPS_GOTSYM if there are
+ dynamic relocations against it. */
+ if (h != NULL
+ && !mips_elf_record_global_got_symbol (h, info, g))
+ return false;
}
if (SGI_COMPAT (abfd))
mips_elf_hash_table (info)->compact_rel_size +=
sizeof (Elf32_External_crinfo);
-
break;
case R_MIPS_26:
/* If this reloc is not a 16 bit call, and it has a global
symbol, then we will need the fn_stub if there is one.
- References from a stub section do not count. */
+ References from a stub section do not count. */
if (h != NULL
- && ELF32_R_TYPE (rel->r_info) != R_MIPS16_26
+ && r_type != R_MIPS16_26
&& strncmp (bfd_get_section_name (abfd, sec), FN_STUB,
sizeof FN_STUB - 1) != 0
&& strncmp (bfd_get_section_name (abfd, sec), CALL_STUB,
/* Return the section that should be marked against GC for a given
relocation. */
-static asection *
-mips_elf_gc_mark_hook (abfd, info, rel, h, sym)
+asection *
+_bfd_mips_elf_gc_mark_hook (abfd, info, rel, h, sym)
bfd *abfd;
- struct bfd_link_info *info;
+ struct bfd_link_info *info ATTRIBUTE_UNUSED;
Elf_Internal_Rela *rel;
struct elf_link_hash_entry *h;
Elf_Internal_Sym *sym;
/* Update the got entry reference counts for the section being removed. */
-static boolean
-mips_elf_gc_sweep_hook (abfd, info, sec, relocs)
- bfd *abfd;
- struct bfd_link_info *info;
- asection *sec;
- const Elf_Internal_Rela *relocs;
+boolean
+_bfd_mips_elf_gc_sweep_hook (abfd, info, sec, relocs)
+ bfd *abfd ATTRIBUTE_UNUSED;
+ struct bfd_link_info *info ATTRIBUTE_UNUSED;
+ asection *sec ATTRIBUTE_UNUSED;
+ const Elf_Internal_Rela *relocs ATTRIBUTE_UNUSED;
{
#if 0
Elf_Internal_Shdr *symtab_hdr;
/* ??? It would seem that the existing MIPS code does no sort
of reference counting or whatnot on its GOT and PLT entries,
so it is not possible to garbage collect them at this time. */
- break;
+ break;
default:
break;
return true;
}
+/* Copy data from a MIPS ELF indirect symbol to its direct symbol,
+ hiding the old indirect symbol. Process additional relocation
+ information. */
+
+void
+_bfd_mips_elf_copy_indirect_symbol (dir, ind)
+ struct elf_link_hash_entry *dir, *ind;
+{
+ struct mips_elf_link_hash_entry *dirmips, *indmips;
+
+ _bfd_elf_link_hash_copy_indirect (dir, ind);
+
+ dirmips = (struct mips_elf_link_hash_entry *) dir;
+ indmips = (struct mips_elf_link_hash_entry *) ind;
+ dirmips->possibly_dynamic_relocs += indmips->possibly_dynamic_relocs;
+ if (dirmips->min_dyn_reloc_index == 0
+ || (indmips->min_dyn_reloc_index != 0
+ && indmips->min_dyn_reloc_index < dirmips->min_dyn_reloc_index))
+ dirmips->min_dyn_reloc_index = indmips->min_dyn_reloc_index;
+}
/* Adjust a symbol defined by a dynamic object and referenced by a
regular object. The current definition is in some section of the
change the definition to something the rest of the link can
understand. */
-static boolean
-mips_elf_adjust_dynamic_symbol (info, h)
+boolean
+_bfd_mips_elf_adjust_dynamic_symbol (info, h)
struct bfd_link_info *info;
struct elf_link_hash_entry *h;
{
file. */
hmips = (struct mips_elf_link_hash_entry *) h;
if (! info->relocateable
- && hmips->mips_32_relocs != 0
+ && hmips->possibly_dynamic_relocs != 0
&& (h->elf_link_hash_flags & ELF_LINK_HASH_DEF_REGULAR) == 0)
- {
- s = bfd_get_section_by_name (dynobj, ".rel.dyn");
- BFD_ASSERT (s != NULL);
-
- if (s->_raw_size == 0)
- {
- /* Make room for a null element. */
- s->_raw_size += sizeof (Elf32_External_Rel);
- ++s->reloc_count;
- }
- s->_raw_size += hmips->mips_32_relocs * sizeof (Elf32_External_Rel);
- }
+ mips_elf_allocate_dynamic_relocations (dynobj,
+ hmips->possibly_dynamic_relocs);
- /* For a function, create a stub, if needed. */
- if (h->type == STT_FUNC
- || (h->elf_link_hash_flags & ELF_LINK_HASH_NEEDS_PLT) != 0)
+ /* For a function, create a stub, if needed. */
+ if ((h->elf_link_hash_flags & ELF_LINK_HASH_NEEDS_PLT) != 0)
{
if (! elf_hash_table (info)->dynamic_sections_created)
return true;
if ((h->elf_link_hash_flags & ELF_LINK_HASH_DEF_REGULAR) == 0)
{
/* We need .stub section. */
- s = bfd_get_section_by_name (dynobj, ".stub");
+ s = bfd_get_section_by_name (dynobj,
+ MIPS_ELF_STUB_SECTION_NAME (dynobj));
BFD_ASSERT (s != NULL);
h->root.u.def.section = s;
return true;
}
}
+ else if ((h->type == STT_FUNC)
+ && (h->elf_link_hash_flags & ELF_LINK_HASH_NEEDS_PLT) == 0)
+ {
+ /* This will set the entry for this symbol in the GOT to 0, and
+ the dynamic linker will take care of this. */
+ h->root.u.def.value = 0;
+ return true;
+ }
/* If this is a weak symbol, and there is a real definition, the
processor independent code will have arranged for us to see the
static boolean mips_elf_check_mips16_stubs
PARAMS ((struct mips_elf_link_hash_entry *, PTR));
-static boolean
-mips_elf_always_size_sections (output_bfd, info)
+boolean
+_bfd_mips_elf_always_size_sections (output_bfd, info)
bfd *output_bfd;
struct bfd_link_info *info;
{
/* Check the mips16 stubs for a particular symbol, and see if we can
discard them. */
-/*ARGSUSED*/
static boolean
mips_elf_check_mips16_stubs (h, data)
struct mips_elf_link_hash_entry *h;
- PTR data;
+ PTR data ATTRIBUTE_UNUSED;
{
if (h->fn_stub != NULL
&& ! h->need_fn_stub)
being included in the link. */
h->fn_stub->_raw_size = 0;
h->fn_stub->_cooked_size = 0;
- h->fn_stub->flags &= ~ SEC_RELOC;
+ h->fn_stub->flags &= ~SEC_RELOC;
h->fn_stub->reloc_count = 0;
h->fn_stub->flags |= SEC_EXCLUDE;
}
to 0 to prevent it from being included in the link. */
h->call_stub->_raw_size = 0;
h->call_stub->_cooked_size = 0;
- h->call_stub->flags &= ~ SEC_RELOC;
+ h->call_stub->flags &= ~SEC_RELOC;
h->call_stub->reloc_count = 0;
h->call_stub->flags |= SEC_EXCLUDE;
}
to 0 to prevent it from being included in the link. */
h->call_fp_stub->_raw_size = 0;
h->call_fp_stub->_cooked_size = 0;
- h->call_fp_stub->flags &= ~ SEC_RELOC;
+ h->call_fp_stub->flags &= ~SEC_RELOC;
h->call_fp_stub->reloc_count = 0;
h->call_fp_stub->flags |= SEC_EXCLUDE;
}
/* Set the sizes of the dynamic sections. */
-static boolean
-mips_elf_size_dynamic_sections (output_bfd, info)
+boolean
+_bfd_mips_elf_size_dynamic_sections (output_bfd, info)
bfd *output_bfd;
struct bfd_link_info *info;
{
bfd *dynobj;
asection *s;
boolean reltext;
- asection *sgot;
- struct mips_got_info *g;
+ struct mips_got_info *g = NULL;
dynobj = elf_hash_table (info)->dynobj;
BFD_ASSERT (dynobj != NULL);
{
s = bfd_get_section_by_name (dynobj, ".interp");
BFD_ASSERT (s != NULL);
- s->_raw_size = sizeof ELF_DYNAMIC_INTERPRETER;
- s->contents = (unsigned char *) ELF_DYNAMIC_INTERPRETER;
+ s->_raw_size
+ = strlen (ELF_DYNAMIC_INTERPRETER (output_bfd)) + 1;
+ s->contents
+ = (bfd_byte *) ELF_DYNAMIC_INTERPRETER (output_bfd);
}
}
- /* Recompute the size of .got for local entires (reserved and
- hipages) if needed. To estimate it, get the upper bound of total
- size of loadable sections. */
- sgot = bfd_get_section_by_name (dynobj, ".got");
-
- if (sgot != NULL)
- {
- bfd_size_type loadable_size = 0;
- bfd_size_type local_gotno;
- struct _bfd *sub;
-
- BFD_ASSERT (elf_section_data (sgot) != NULL);
- g = (struct mips_got_info *) elf_section_data (sgot)->tdata;
- BFD_ASSERT (g != NULL);
-
- for (sub = info->input_bfds; sub; sub = sub->link_next)
- for (s = sub->sections; s != NULL; s = s->next)
- {
- if ((s->flags & SEC_ALLOC) == 0)
- continue;
- loadable_size += (s->_raw_size + 0xf) & ~0xf;
- }
-
- loadable_size += MIPS_FUNCTION_STUB_SIZE;
-
- /* Assume there are two loadable segments consisting of
- contiguous sections. Is 5 enough? */
- local_gotno = (loadable_size >> 16) + 5 + MIPS_RESERVED_GOTNO;
- g->local_gotno = local_gotno;
- sgot->_raw_size += local_gotno * 4;
- }
-
/* The check_relocs and adjust_dynamic_symbol entry points have
determined the sizes of the various dynamic sections. Allocate
memory for them. */
if ((target != NULL
&& (target->flags & SEC_READONLY) != 0
&& (target->flags & SEC_ALLOC) != 0)
- || strcmp (outname, ".rel.dyn") == 0)
+ || strcmp (outname,
+ MIPS_ELF_REL_DYN_SECTION_NAME (output_bfd)) == 0)
reltext = true;
/* We use the reloc_count field as a counter if we need
to copy relocs into the output file. */
- if (strcmp (name, ".rel.dyn") != 0)
+ if (strcmp (name,
+ MIPS_ELF_REL_DYN_SECTION_NAME (output_bfd)) != 0)
s->reloc_count = 0;
}
}
else if (strncmp (name, ".got", 4) == 0)
{
int i;
+ bfd_size_type loadable_size = 0;
+ bfd_size_type local_gotno;
+ struct _bfd *sub;
BFD_ASSERT (elf_section_data (s) != NULL);
g = (struct mips_got_info *) elf_section_data (s)->tdata;
BFD_ASSERT (g != NULL);
- /* Fix the size of .got section for the correspondence of
- global symbols and got entries. This adds some useless
- got entries. Is this required by ABI really? */
- i = elf_hash_table (info)->dynsymcount - g->global_gotsym;
- s->_raw_size += i * 4;
+ /* Calculate the total loadable size of the output. That
+ will give us the maximum number of GOT_PAGE entries
+ required. */
+ for (sub = info->input_bfds; sub; sub = sub->link_next)
+ {
+ asection *subsection;
+
+ for (subsection = sub->sections;
+ subsection;
+ subsection = subsection->next)
+ {
+ if ((subsection->flags & SEC_ALLOC) == 0)
+ continue;
+ loadable_size += (subsection->_raw_size + 0xf) & ~0xf;
+ }
+ }
+ loadable_size += MIPS_FUNCTION_STUB_SIZE;
+
+ /* Assume there are two loadable segments consisting of
+ contiguous sections. Is 5 enough? */
+ local_gotno = (loadable_size >> 16) + 5;
+ if (IRIX_COMPAT (output_bfd) == ict_irix6)
+ /* It's possible we will need GOT_PAGE entries as well as
+ GOT16 entries. Often, these will be able to share GOT
+ entries, but not always. */
+ local_gotno *= 2;
+
+ g->local_gotno += local_gotno;
+ s->_raw_size += local_gotno * MIPS_ELF_GOT_SIZE (dynobj);
+
+ /* There has to be a global GOT entry for every symbol with
+ a dynamic symbol table index of DT_MIPS_GOTSYM or
+ higher. Therefore, it make sense to put those symbols
+ that need GOT entries at the end of the symbol table. We
+ do that here. */
+ if (!mips_elf_sort_hash_table (info, 1))
+ return false;
+
+ if (g->global_gotsym != NULL)
+ i = elf_hash_table (info)->dynsymcount - g->global_gotsym->dynindx;
+ else
+ /* If there are no global symbols, or none requiring
+ relocations, then GLOBAL_GOTSYM will be NULL. */
+ i = 0;
+ g->global_gotno = i;
+ s->_raw_size += i * MIPS_ELF_GOT_SIZE (dynobj);
}
- else if (strncmp (name, ".stub", 5) == 0)
+ else if (strcmp (name, MIPS_ELF_STUB_SECTION_NAME (output_bfd)) == 0)
{
/* Irix rld assumes that the function stub isn't at the end
of .text section. So put a dummy. XXX */
else if (SGI_COMPAT (output_bfd)
&& strncmp (name, ".compact_rel", 12) == 0)
s->_raw_size += mips_elf_hash_table (info)->compact_rel_size;
+ else if (strcmp (name, MIPS_ELF_MSYM_SECTION_NAME (output_bfd))
+ == 0)
+ s->_raw_size = (sizeof (Elf32_External_Msym)
+ * (elf_hash_table (info)->dynsymcount
+ + bfd_count_sections (output_bfd)));
else if (strncmp (name, ".init", 5) != 0)
{
/* It's not one of our sections, so don't allocate space. */
if (strip)
{
- _bfd_strip_section_from_output (s);
+ _bfd_strip_section_from_output (info, s);
continue;
}
/* Allocate memory for the section contents. */
- s->contents = (bfd_byte *) bfd_alloc (dynobj, s->_raw_size);
+ s->contents = (bfd_byte *) bfd_zalloc (dynobj, s->_raw_size);
if (s->contents == NULL && s->_raw_size != 0)
{
bfd_set_error (bfd_error_no_memory);
return false;
}
- memset (s->contents, 0, s->_raw_size);
}
if (elf_hash_table (info)->dynamic_sections_created)
dynamic linker and used by the debugger. */
if (! info->shared)
{
- if (SGI_COMPAT (output_bfd))
+ /* SGI object has the equivalence of DT_DEBUG in the
+ DT_MIPS_RLD_MAP entry. */
+ if (!MIPS_ELF_ADD_DYNAMIC_ENTRY (info, DT_MIPS_RLD_MAP, 0))
+ return false;
+ if (!SGI_COMPAT (output_bfd))
+ {
+ if (!MIPS_ELF_ADD_DYNAMIC_ENTRY (info, DT_DEBUG, 0))
+ return false;
+ }
+ }
+ else
+ {
+ /* Shared libraries on traditional mips have DT_DEBUG. */
+ if (!SGI_COMPAT (output_bfd))
{
- /* SGI object has the equivalence of DT_DEBUG in the
- DT_MIPS_RLD_MAP entry. */
- if (! bfd_elf32_add_dynamic_entry (info, DT_MIPS_RLD_MAP, 0))
+ if (!MIPS_ELF_ADD_DYNAMIC_ENTRY (info, DT_DEBUG, 0))
return false;
}
- else
- if (! bfd_elf32_add_dynamic_entry (info, DT_DEBUG, 0))
- return false;
}
-
- if (reltext)
+ if (reltext && SGI_COMPAT (output_bfd))
{
- if (! bfd_elf32_add_dynamic_entry (info, DT_TEXTREL, 0))
+ if (! MIPS_ELF_ADD_DYNAMIC_ENTRY (info, DT_TEXTREL, 0))
return false;
+ info->flags |= DF_TEXTREL;
}
- if (! bfd_elf32_add_dynamic_entry (info, DT_PLTGOT, 0))
+ if (! MIPS_ELF_ADD_DYNAMIC_ENTRY (info, DT_PLTGOT, 0))
return false;
- if (bfd_get_section_by_name (dynobj, ".rel.dyn"))
+ if (bfd_get_section_by_name (dynobj,
+ MIPS_ELF_REL_DYN_SECTION_NAME (dynobj)))
{
- if (! bfd_elf32_add_dynamic_entry (info, DT_REL, 0))
+ if (! MIPS_ELF_ADD_DYNAMIC_ENTRY (info, DT_REL, 0))
return false;
- if (! bfd_elf32_add_dynamic_entry (info, DT_RELSZ, 0))
+ if (! MIPS_ELF_ADD_DYNAMIC_ENTRY (info, DT_RELSZ, 0))
return false;
- if (! bfd_elf32_add_dynamic_entry (info, DT_RELENT, 0))
+ if (! MIPS_ELF_ADD_DYNAMIC_ENTRY (info, DT_RELENT, 0))
return false;
}
- if (! bfd_elf32_add_dynamic_entry (info, DT_MIPS_CONFLICTNO, 0))
- return false;
+ if (SGI_COMPAT (output_bfd))
+ {
+ if (!MIPS_ELF_ADD_DYNAMIC_ENTRY (info, DT_MIPS_CONFLICTNO, 0))
+ return false;
+ }
- if (! bfd_elf32_add_dynamic_entry (info, DT_MIPS_LIBLISTNO, 0))
- return false;
+ if (SGI_COMPAT (output_bfd))
+ {
+ if (!MIPS_ELF_ADD_DYNAMIC_ENTRY (info, DT_MIPS_LIBLISTNO, 0))
+ return false;
+ }
if (bfd_get_section_by_name (dynobj, ".conflict") != NULL)
{
- if (! bfd_elf32_add_dynamic_entry (info, DT_MIPS_CONFLICT, 0))
+ if (! MIPS_ELF_ADD_DYNAMIC_ENTRY (info, DT_MIPS_CONFLICT, 0))
return false;
s = bfd_get_section_by_name (dynobj, ".liblist");
BFD_ASSERT (s != NULL);
- if (! bfd_elf32_add_dynamic_entry (info, DT_MIPS_LIBLIST, 0))
+ if (! MIPS_ELF_ADD_DYNAMIC_ENTRY (info, DT_MIPS_LIBLIST, 0))
return false;
}
- if (! bfd_elf32_add_dynamic_entry (info, DT_MIPS_RLD_VERSION, 0))
+ if (! MIPS_ELF_ADD_DYNAMIC_ENTRY (info, DT_MIPS_RLD_VERSION, 0))
return false;
- if (! bfd_elf32_add_dynamic_entry (info, DT_MIPS_FLAGS, 0))
+ if (! MIPS_ELF_ADD_DYNAMIC_ENTRY (info, DT_MIPS_FLAGS, 0))
return false;
#if 0
/* Time stamps in executable files are a bad idea. */
- if (! bfd_elf32_add_dynamic_entry (info, DT_MIPS_TIME_STAMP, 0))
+ if (! MIPS_ELF_ADD_DYNAMIC_ENTRY (info, DT_MIPS_TIME_STAMP, 0))
return false;
#endif
#if 0 /* FIXME */
- if (! bfd_elf32_add_dynamic_entry (info, DT_MIPS_ICHECKSUM, 0))
+ if (! MIPS_ELF_ADD_DYNAMIC_ENTRY (info, DT_MIPS_ICHECKSUM, 0))
return false;
#endif
#if 0 /* FIXME */
- if (! bfd_elf32_add_dynamic_entry (info, DT_MIPS_IVERSION, 0))
+ if (! MIPS_ELF_ADD_DYNAMIC_ENTRY (info, DT_MIPS_IVERSION, 0))
return false;
#endif
- if (! bfd_elf32_add_dynamic_entry (info, DT_MIPS_BASE_ADDRESS, 0))
+ if (! MIPS_ELF_ADD_DYNAMIC_ENTRY (info, DT_MIPS_BASE_ADDRESS, 0))
return false;
- if (! bfd_elf32_add_dynamic_entry (info, DT_MIPS_LOCAL_GOTNO, 0))
+ if (! MIPS_ELF_ADD_DYNAMIC_ENTRY (info, DT_MIPS_LOCAL_GOTNO, 0))
return false;
- if (! bfd_elf32_add_dynamic_entry (info, DT_MIPS_SYMTABNO, 0))
+ if (! MIPS_ELF_ADD_DYNAMIC_ENTRY (info, DT_MIPS_SYMTABNO, 0))
return false;
- if (! bfd_elf32_add_dynamic_entry (info, DT_MIPS_UNREFEXTNO, 0))
+ if (! MIPS_ELF_ADD_DYNAMIC_ENTRY (info, DT_MIPS_UNREFEXTNO, 0))
return false;
- if (! bfd_elf32_add_dynamic_entry (info, DT_MIPS_GOTSYM, 0))
+ if (! MIPS_ELF_ADD_DYNAMIC_ENTRY (info, DT_MIPS_GOTSYM, 0))
return false;
- if (! bfd_elf32_add_dynamic_entry (info, DT_MIPS_HIPAGENO, 0))
+ if (IRIX_COMPAT (dynobj) == ict_irix5
+ && ! MIPS_ELF_ADD_DYNAMIC_ENTRY (info, DT_MIPS_HIPAGENO, 0))
return false;
-#if 0 /* (SGI_COMPAT) */
- if (! bfd_get_section_by_name (dynobj, ".init"))
- if (! bfd_elf32_add_dynamic_entry (info, DT_INIT, 0))
- return false;
+ if (IRIX_COMPAT (dynobj) == ict_irix6
+ && (bfd_get_section_by_name
+ (dynobj, MIPS_ELF_OPTIONS_SECTION_NAME (dynobj)))
+ && !MIPS_ELF_ADD_DYNAMIC_ENTRY (info, DT_MIPS_OPTIONS, 0))
+ return false;
- if (! bfd_get_section_by_name (dynobj, ".fini"))
- if (! bfd_elf32_add_dynamic_entry (info, DT_FINI, 0))
- return false;
-#endif
+ if (bfd_get_section_by_name (dynobj,
+ MIPS_ELF_MSYM_SECTION_NAME (dynobj))
+ && !MIPS_ELF_ADD_DYNAMIC_ENTRY (info, DT_MIPS_MSYM, 0))
+ return false;
}
- /* If we use dynamic linking, we generate a section symbol for each
- output section. These are local symbols, which means that they
- must come first in the dynamic symbol table.
- That means we must increment the dynamic symbol index of every
- other dynamic symbol. */
- {
- unsigned int c, i;
- struct mips_got_info *g;
-
- c = 0;
- if (elf_hash_table (info)->dynamic_sections_created)
- {
-#if 0
- /* We no longer try to restrict the set of sections which get
- dynamic symbol table entries, since it fails if we have
- other random sections which need dynamic relocations. */
- const char * const *namep;
- bfd_size_type strindex;
- struct bfd_strtab_hash *dynstr;
-
- if (SGI_COMPAT (output_bfd))
- {
- c = SIZEOF_MIPS_DYNSYM_SECNAMES - 1;
- elf_link_hash_traverse (elf_hash_table (info),
- mips_elf_adjust_dynindx,
- (PTR) &c);
- elf_hash_table (info)->dynsymcount += c;
-
- dynstr = elf_hash_table (info)->dynstr;
- BFD_ASSERT (dynstr != NULL);
-
- for (i = 1, namep = mips_elf_dynsym_sec_names;
- *namep != NULL;
- i++, namep++)
- {
- s = bfd_get_section_by_name (output_bfd, *namep);
- if (s != NULL)
- elf_section_data (s)->dynindx = i;
-
- strindex = _bfd_stringtab_add (dynstr, *namep, true, false);
- if (strindex == (bfd_size_type) -1)
- return false;
-
- mips_elf_hash_table (info)->dynsym_sec_strindex[i] = strindex;
- }
- }
- else
-#endif /* 0 */
- {
- c = bfd_count_sections (output_bfd);
- elf_link_hash_traverse (elf_hash_table (info),
- mips_elf_adjust_dynindx,
- (PTR) &c);
- elf_hash_table (info)->dynsymcount += c;
-
- for (i = 1, s = output_bfd->sections; s != NULL; s = s->next, i++)
- {
- elf_section_data (s)->dynindx = i;
- /* These symbols will have no names, so we don't need to
- fiddle with dynstr_index. */
- }
- }
- }
-
- if (sgot != NULL)
- {
- BFD_ASSERT (elf_section_data (sgot) != NULL);
- g = (struct mips_got_info *) elf_section_data (sgot)->tdata;
- BFD_ASSERT (g != NULL);
-
- /* If there are no global got symbols, fake the last symbol so
- for safety. */
- if (g->global_gotsym)
- g->global_gotsym += c;
- else
- g->global_gotsym = elf_hash_table (info)->dynsymcount - 1;
- }
- }
-
return true;
}
-/* Increment the index of a dynamic symbol by a given amount. Called
- via elf_link_hash_traverse. */
+/* If NAME is one of the special IRIX6 symbols defined by the linker,
+ adjust it appropriately now. */
-static boolean
-mips_elf_adjust_dynindx (h, cparg)
- struct elf_link_hash_entry *h;
- PTR cparg;
+static void
+mips_elf_irix6_finish_dynamic_symbol (abfd, name, sym)
+ bfd *abfd ATTRIBUTE_UNUSED;
+ const char *name;
+ Elf_Internal_Sym *sym;
{
- unsigned int *cp = (unsigned int *) cparg;
+ /* The linker script takes care of providing names and values for
+ these, but we must place them into the right sections. */
+ static const char* const text_section_symbols[] = {
+ "_ftext",
+ "_etext",
+ "__dso_displacement",
+ "__elf_header",
+ "__program_header_table",
+ NULL
+ };
+
+ static const char* const data_section_symbols[] = {
+ "_fdata",
+ "_edata",
+ "_end",
+ "_fbss",
+ NULL
+ };
+
+ const char* const *p;
+ int i;
+
+ for (i = 0; i < 2; ++i)
+ for (p = (i == 0) ? text_section_symbols : data_section_symbols;
+ *p;
+ ++p)
+ if (strcmp (*p, name) == 0)
+ {
+ /* All of these symbols are given type STT_SECTION by the
+ IRIX6 linker. */
+ sym->st_info = ELF_ST_INFO (STB_GLOBAL, STT_SECTION);
- if (h->dynindx != -1)
- h->dynindx += *cp;
- return true;
+ /* The IRIX linker puts these symbols in special sections. */
+ if (i == 0)
+ sym->st_shndx = SHN_MIPS_TEXT;
+ else
+ sym->st_shndx = SHN_MIPS_DATA;
+
+ break;
+ }
}
/* Finish up dynamic symbol handling. We set the contents of various
dynamic sections here. */
-static boolean
-mips_elf_finish_dynamic_symbol (output_bfd, info, h, sym)
+boolean
+_bfd_mips_elf_finish_dynamic_symbol (output_bfd, info, h, sym)
bfd *output_bfd;
struct bfd_link_info *info;
struct elf_link_hash_entry *h;
bfd *dynobj;
bfd_vma gval;
asection *sgot;
+ asection *smsym;
struct mips_got_info *g;
const char *name;
+ struct mips_elf_link_hash_entry *mh;
dynobj = elf_hash_table (info)->dynobj;
gval = sym->st_value;
+ mh = (struct mips_elf_link_hash_entry *) h;
if (h->plt.offset != (bfd_vma) -1)
{
BFD_ASSERT (h->dynindx != -1);
- s = bfd_get_section_by_name (dynobj, ".stub");
+ s = bfd_get_section_by_name (dynobj,
+ MIPS_ELF_STUB_SECTION_NAME (dynobj));
BFD_ASSERT (s != NULL);
/* Fill the stub. */
p = stub;
- bfd_put_32 (output_bfd, STUB_LW(output_bfd), p);
+ bfd_put_32 (output_bfd, STUB_LW (output_bfd), p);
p += 4;
- bfd_put_32 (output_bfd, STUB_MOVE, p);
+ bfd_put_32 (output_bfd, STUB_MOVE (output_bfd), p);
p += 4;
/* FIXME: Can h->dynindex be more than 64K? */
bfd_put_32 (output_bfd, STUB_JALR, p);
p += 4;
- bfd_put_32 (output_bfd, STUB_LI16 + h->dynindx, p);
+ bfd_put_32 (output_bfd, STUB_LI16 (output_bfd) + h->dynindx, p);
BFD_ASSERT (h->plt.offset <= s->_raw_size);
memcpy (s->contents + h->plt.offset, stub, MIPS_FUNCTION_STUB_SIZE);
sym->st_value = gval;
}
- BFD_ASSERT (h->dynindx != -1);
+ BFD_ASSERT (h->dynindx != -1
+ || (h->elf_link_hash_flags & ELF_LINK_FORCED_LOCAL) != 0);
- sgot = bfd_get_section_by_name (dynobj, ".got");
+ sgot = mips_elf_got_section (dynobj);
BFD_ASSERT (sgot != NULL);
BFD_ASSERT (elf_section_data (sgot) != NULL);
g = (struct mips_got_info *) elf_section_data (sgot)->tdata;
BFD_ASSERT (g != NULL);
- if ((unsigned long) h->dynindx >= g->global_gotsym)
+ /* Run through the global symbol table, creating GOT entries for all
+ the symbols that need them. */
+ if (g->global_gotsym != NULL
+ && h->dynindx >= g->global_gotsym->dynindx)
{
- bfd_size_type offset;
+ bfd_vma offset;
+ bfd_vma value;
- /* This symbol has an entry in the global offset table. Set its
- value to the corresponding got entry, if needed. */
- if (h->got.offset == (bfd_vma) -1)
+ if (sym->st_value)
+ value = sym->st_value;
+ else
{
- offset = (h->dynindx - g->global_gotsym + g->local_gotno) * 4;
- BFD_ASSERT (g->local_gotno * 4 <= offset
- && offset < sgot->_raw_size);
- bfd_put_32 (output_bfd, gval, sgot->contents + offset);
+ /* For an entity defined in a shared object, this will be
+ NULL. (For functions in shared objects for
+ which we have created stubs, ST_VALUE will be non-NULL.
+ That's because such the functions are now no longer defined
+ in a shared object.) */
+
+ if (info->shared && h->root.type == bfd_link_hash_undefined)
+ value = 0;
+ else
+ value = h->root.u.def.value;
}
+ offset = mips_elf_global_got_index (dynobj, h);
+ MIPS_ELF_PUT_WORD (output_bfd, value, sgot->contents + offset);
+ }
+
+ /* Create a .msym entry, if appropriate. */
+ smsym = bfd_get_section_by_name (dynobj,
+ MIPS_ELF_MSYM_SECTION_NAME (dynobj));
+ if (smsym)
+ {
+ Elf32_Internal_Msym msym;
+
+ msym.ms_hash_value = bfd_elf_hash (h->root.root.string);
+ /* It is undocumented what the `1' indicates, but IRIX6 uses
+ this value. */
+ msym.ms_info = ELF32_MS_INFO (mh->min_dyn_reloc_index, 1);
+ bfd_mips_elf_swap_msym_out
+ (dynobj, &msym,
+ ((Elf32_External_Msym *) smsym->contents) + h->dynindx);
}
/* Mark _DYNAMIC and _GLOBAL_OFFSET_TABLE_ as absolute. */
if (strcmp (name, "_DYNAMIC") == 0
|| strcmp (name, "_GLOBAL_OFFSET_TABLE_") == 0)
sym->st_shndx = SHN_ABS;
- else if (strcmp (name, "_DYNAMIC_LINK") == 0)
+ else if (strcmp (name, "_DYNAMIC_LINK") == 0
+ || strcmp (name, "_DYNAMIC_LINKING") == 0)
{
sym->st_shndx = SHN_ABS;
sym->st_info = ELF_ST_INFO (STB_GLOBAL, STT_SECTION);
sym->st_value = 1;
}
+ else if (strcmp (name, "_gp_disp") == 0)
+ {
+ sym->st_shndx = SHN_ABS;
+ sym->st_info = ELF_ST_INFO (STB_GLOBAL, STT_SECTION);
+ sym->st_value = elf_gp (output_bfd);
+ }
else if (SGI_COMPAT (output_bfd))
{
- if (strcmp (name, "_gp_disp") == 0)
- {
- sym->st_shndx = SHN_ABS;
- sym->st_info = ELF_ST_INFO (STB_GLOBAL, STT_SECTION);
- sym->st_value = elf_gp (output_bfd);
- }
- else if (strcmp (name, mips_elf_dynsym_rtproc_names[0]) == 0
- || strcmp (name, mips_elf_dynsym_rtproc_names[1]) == 0)
+ if (strcmp (name, mips_elf_dynsym_rtproc_names[0]) == 0
+ || strcmp (name, mips_elf_dynsym_rtproc_names[1]) == 0)
{
sym->st_info = ELF_ST_INFO (STB_GLOBAL, STT_SECTION);
sym->st_other = STO_PROTECTED;
}
}
- if (SGI_COMPAT (output_bfd)
- && ! info->shared)
+ /* Handle the IRIX6-specific symbols. */
+ if (IRIX_COMPAT (output_bfd) == ict_irix6)
+ mips_elf_irix6_finish_dynamic_symbol (output_bfd, name, sym);
+
+ if (! info->shared)
{
if (! mips_elf_hash_table (info)->use_rld_obj_head
- && strcmp (name, "__rld_map") == 0)
+ && (strcmp (name, "__rld_map") == 0
+ || strcmp (name, "__RLD_MAP") == 0))
{
asection *s = bfd_get_section_by_name (dynobj, ".rld_map");
BFD_ASSERT (s != NULL);
else if (mips_elf_hash_table (info)->use_rld_obj_head
&& strcmp (name, "__rld_obj_head") == 0)
{
- asection *s = bfd_get_section_by_name (dynobj, ".rld_map");
- BFD_ASSERT (s != NULL);
+ /* IRIX6 does not use a .rld_map section. */
+ if (IRIX_COMPAT (output_bfd) == ict_irix5
+ || IRIX_COMPAT (output_bfd) == ict_none)
+ BFD_ASSERT (bfd_get_section_by_name (dynobj, ".rld_map")
+ != NULL);
mips_elf_hash_table (info)->rld_value = sym->st_value;
}
}
/* Finish up the dynamic sections. */
-static boolean
-mips_elf_finish_dynamic_sections (output_bfd, info)
+boolean
+_bfd_mips_elf_finish_dynamic_sections (output_bfd, info)
bfd *output_bfd;
struct bfd_link_info *info;
{
sdyn = bfd_get_section_by_name (dynobj, ".dynamic");
- sgot = bfd_get_section_by_name (dynobj, ".got");
+ sgot = mips_elf_got_section (dynobj);
if (sgot == NULL)
g = NULL;
else
if (elf_hash_table (info)->dynamic_sections_created)
{
- Elf32_External_Dyn *dyncon, *dynconend;
+ bfd_byte *b;
BFD_ASSERT (sdyn != NULL);
BFD_ASSERT (g != NULL);
- dyncon = (Elf32_External_Dyn *) sdyn->contents;
- dynconend = (Elf32_External_Dyn *) (sdyn->contents + sdyn->_raw_size);
- for (; dyncon < dynconend; dyncon++)
+ for (b = sdyn->contents;
+ b < sdyn->contents + sdyn->_raw_size;
+ b += MIPS_ELF_DYN_SIZE (dynobj))
{
Elf_Internal_Dyn dyn;
const char *name;
size_t elemsize;
asection *s;
+ boolean swap_out_p;
- bfd_elf32_swap_dyn_in (dynobj, dyncon, &dyn);
+ /* Read in the current dynamic entry. */
+ (*get_elf_backend_data (dynobj)->s->swap_dyn_in) (dynobj, b, &dyn);
+
+ /* Assume that we're going to modify it and write it out. */
+ swap_out_p = true;
switch (dyn.d_tag)
{
- default:
- break;
-
case DT_RELENT:
- s = bfd_get_section_by_name (dynobj, ".rel.dyn");
+ s = (bfd_get_section_by_name
+ (dynobj,
+ MIPS_ELF_REL_DYN_SECTION_NAME (dynobj)));
BFD_ASSERT (s != NULL);
- dyn.d_un.d_val = sizeof (Elf32_External_Rel);
- bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon);
+ dyn.d_un.d_val = MIPS_ELF_REL_SIZE (dynobj);
break;
case DT_STRSZ:
/* Rewrite DT_STRSZ. */
dyn.d_un.d_val =
_bfd_stringtab_size (elf_hash_table (info)->dynstr);
- bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon);
break;
case DT_PLTGOT:
s = bfd_get_section_by_name (output_bfd, name);
BFD_ASSERT (s != NULL);
dyn.d_un.d_ptr = s->vma;
- bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon);
break;
case DT_MIPS_RLD_VERSION:
dyn.d_un.d_val = 1; /* XXX */
- bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon);
break;
case DT_MIPS_FLAGS:
dyn.d_un.d_val = RHF_NOTPOT; /* XXX */
- bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon);
break;
case DT_MIPS_CONFLICTNO:
dyn.d_un.d_val = s->_raw_size / elemsize;
}
else
- dyn.d_un.d_val = 0;
-
- bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon);
+ dyn.d_un.d_val = 0;
break;
case DT_MIPS_TIME_STAMP:
time ((time_t *) &dyn.d_un.d_val);
- bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon);
break;
case DT_MIPS_ICHECKSUM:
/* XXX FIXME: */
+ swap_out_p = false;
break;
case DT_MIPS_IVERSION:
/* XXX FIXME: */
+ swap_out_p = false;
break;
case DT_MIPS_BASE_ADDRESS:
s = output_bfd->sections;
BFD_ASSERT (s != NULL);
dyn.d_un.d_ptr = s->vma & ~(0xffff);
- bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon);
break;
case DT_MIPS_LOCAL_GOTNO:
dyn.d_un.d_val = g->local_gotno;
- bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon);
break;
+ case DT_MIPS_UNREFEXTNO:
+ /* The index into the dynamic symbol table which is the
+ entry of the first external symbol that is not
+ referenced within the same object. */
+ dyn.d_un.d_val = bfd_count_sections (output_bfd) + 1;
+ break;
+
+ case DT_MIPS_GOTSYM:
+ if (g->global_gotsym)
+ {
+ dyn.d_un.d_val = g->global_gotsym->dynindx;
+ break;
+ }
+ /* In case if we don't have global got symbols we default
+ to setting DT_MIPS_GOTSYM to the same value as
+ DT_MIPS_SYMTABNO, so we just fall through. */
+
case DT_MIPS_SYMTABNO:
name = ".dynsym";
- elemsize = sizeof (Elf32_External_Sym);
+ elemsize = MIPS_ELF_SYM_SIZE (output_bfd);
s = bfd_get_section_by_name (output_bfd, name);
BFD_ASSERT (s != NULL);
dyn.d_un.d_val = s->_cooked_size / elemsize;
else
dyn.d_un.d_val = s->_raw_size / elemsize;
- bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon);
- break;
-
- case DT_MIPS_UNREFEXTNO:
-#if 0
- dyn.d_un.d_val = SIZEOF_MIPS_DYNSYM_SECNAMES;
-#else
- dyn.d_un.d_val = bfd_count_sections (output_bfd);
-#endif
- bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon);
- break;
-
- case DT_MIPS_GOTSYM:
- dyn.d_un.d_val = g->global_gotsym;
- bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon);
break;
case DT_MIPS_HIPAGENO:
dyn.d_un.d_val = g->local_gotno - MIPS_RESERVED_GOTNO;
- bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon);
break;
case DT_MIPS_RLD_MAP:
dyn.d_un.d_ptr = mips_elf_hash_table (info)->rld_value;
- bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon);
break;
+ case DT_MIPS_OPTIONS:
+ s = (bfd_get_section_by_name
+ (output_bfd, MIPS_ELF_OPTIONS_SECTION_NAME (output_bfd)));
+ dyn.d_un.d_ptr = s->vma;
+ break;
+
+ case DT_MIPS_MSYM:
+ s = (bfd_get_section_by_name
+ (output_bfd, MIPS_ELF_MSYM_SECTION_NAME (output_bfd)));
+ dyn.d_un.d_ptr = s->vma;
+ break;
+
+ default:
+ swap_out_p = false;
+ break;
}
+
+ if (swap_out_p)
+ (*get_elf_backend_data (dynobj)->s->swap_dyn_out)
+ (dynobj, &dyn, b);
}
}
/* The first entry of the global offset table will be filled at
runtime. The second entry will be used by some runtime loaders.
- This isn't the case of Irix rld. */
+ This isn't the case of Irix rld. */
if (sgot != NULL && sgot->_raw_size > 0)
{
- bfd_put_32 (output_bfd, (bfd_vma) 0, sgot->contents);
- bfd_put_32 (output_bfd, (bfd_vma) 0x80000000, sgot->contents + 4);
+ MIPS_ELF_PUT_WORD (output_bfd, (bfd_vma) 0, sgot->contents);
+ MIPS_ELF_PUT_WORD (output_bfd, (bfd_vma) 0x80000000,
+ sgot->contents + MIPS_ELF_GOT_SIZE (output_bfd));
}
if (sgot != NULL)
- elf_section_data (sgot->output_section)->this_hdr.sh_entsize = 4;
+ elf_section_data (sgot->output_section)->this_hdr.sh_entsize
+ = MIPS_ELF_GOT_SIZE (output_bfd);
{
- asection *sdynsym;
+ asection *smsym;
asection *s;
- Elf_Internal_Sym sym;
Elf32_compact_rel cpt;
- /* Set up the section symbols for the output sections. SGI sets
- the STT_NOTYPE attribute for these symbols. Should we do so? */
+ /* ??? The section symbols for the output sections were set up in
+ _bfd_elf_final_link. SGI sets the STT_NOTYPE attribute for these
+ symbols. Should we do so? */
- sdynsym = bfd_get_section_by_name (dynobj, ".dynsym");
- if (sdynsym != NULL)
+ smsym = bfd_get_section_by_name (dynobj,
+ MIPS_ELF_MSYM_SECTION_NAME (dynobj));
+ if (smsym != NULL)
{
-#if 0
- const char *name;
- const char * const * namep = mips_elf_dynsym_sec_names;
- unsigned int i;
- bfd_vma last;
- long dindx;
-
- /* We no longer try to restrict the set of sections which get
- dynamic symbol table entries, since it fails if we have
- other random sections which need dynamic relocations. */
- if (SGI_COMPAT (output_bfd))
- {
- sym.st_size = 0;
- sym.st_name = 0;
- sym.st_info = ELF_ST_INFO (STB_LOCAL, STT_NOTYPE);
- sym.st_other = 0;
+ Elf32_Internal_Msym msym;
- i = 0;
- last = 0;
- dindx = 0;
- while ((name = *namep++) != NULL)
- {
- s = bfd_get_section_by_name (output_bfd, name);
- if (s != NULL)
- {
- sym.st_value = s->vma;
- dindx = elf_section_data (s)->dynindx;
- last = s->vma + s->_raw_size;
- }
- else
- {
- sym.st_value = last;
- dindx++;
- }
-
- sym.st_shndx = (i < MIPS_TEXT_DYNSYM_SECNO
- ? SHN_MIPS_TEXT
- : SHN_MIPS_DATA);
- ++i;
- sym.st_name =
- mips_elf_hash_table (info)->dynsym_sec_strindex[dindx];
-
- bfd_elf32_swap_symbol_out (output_bfd, &sym,
- (((Elf32_External_Sym *)
- sdynsym->contents)
- + dindx));
- }
+ msym.ms_hash_value = 0;
+ msym.ms_info = ELF32_MS_INFO (0, 1);
- /* Set the sh_info field of the output .dynsym section to
- the index of the first global symbol. */
- elf_section_data (sdynsym->output_section)->this_hdr.sh_info =
- SIZEOF_MIPS_DYNSYM_SECNAMES;
- }
- else
-#endif /* 0 */
+ for (s = output_bfd->sections; s != NULL; s = s->next)
{
- sym.st_size = 0;
- sym.st_name = 0;
- sym.st_info = ELF_ST_INFO (STB_LOCAL, STT_SECTION);
- sym.st_other = 0;
-
- for (s = output_bfd->sections; s != NULL; s = s->next)
- {
- int indx;
-
- sym.st_value = s->vma;
-
- indx = elf_section_data (s)->this_idx;
- BFD_ASSERT (indx > 0);
- sym.st_shndx = indx;
-
- bfd_elf32_swap_symbol_out (output_bfd, &sym,
- (((Elf32_External_Sym *)
- sdynsym->contents)
- + elf_section_data (s)->dynindx));
- }
+ long dynindx = elf_section_data (s)->dynindx;
- /* Set the sh_info field of the output .dynsym section to
- the index of the first global symbol. */
- elf_section_data (sdynsym->output_section)->this_hdr.sh_info =
- bfd_count_sections (output_bfd) + 1;
+ bfd_mips_elf_swap_msym_out
+ (output_bfd, &msym,
+ (((Elf32_External_Msym *) smsym->contents)
+ + dynindx));
}
}
s->contents));
/* Clean up a dummy stub function entry in .text. */
- s = bfd_get_section_by_name (dynobj, ".stub");
+ s = bfd_get_section_by_name (dynobj,
+ MIPS_ELF_STUB_SECTION_NAME (dynobj));
if (s != NULL)
{
file_ptr dummy_offset;
}
}
+ /* We need to sort the entries of the dynamic relocation section. */
+
+ if (!ABI_64_P (output_bfd))
+ {
+ asection *reldyn;
+
+ reldyn = bfd_get_section_by_name (dynobj,
+ MIPS_ELF_REL_DYN_SECTION_NAME (dynobj));
+ if (reldyn != NULL && reldyn->reloc_count > 2)
+ {
+ reldyn_sorting_bfd = output_bfd;
+ qsort ((Elf32_External_Rel *) reldyn->contents + 1,
+ (size_t) reldyn->reloc_count - 1,
+ sizeof (Elf32_External_Rel), sort_dynamic_relocs);
+ }
+ }
+
/* Clean up a first relocation in .rel.dyn. */
- s = bfd_get_section_by_name (dynobj, ".rel.dyn");
+ s = bfd_get_section_by_name (dynobj,
+ MIPS_ELF_REL_DYN_SECTION_NAME (dynobj));
if (s != NULL && s->_raw_size > 0)
- memset (s->contents, 0, sizeof (Elf32_External_Rel));
+ memset (s->contents, 0, MIPS_ELF_REL_SIZE (dynobj));
}
return true;
case bfd_reloc_undefined:
if (!((*link_info->callbacks->undefined_symbol)
(link_info, bfd_asymbol_name (*(*parent)->sym_ptr_ptr),
- input_bfd, input_section, (*parent)->address)))
+ input_bfd, input_section, (*parent)->address,
+ true)))
goto error_return;
break;
case bfd_reloc_dangerous:
free (reloc_vector);
return NULL;
}
+
#define bfd_elf32_bfd_get_relocated_section_contents \
elf32_mips_get_relocated_section_contents
\f
/* ECOFF swapping routines. These are used when dealing with the
.mdebug section, which is in the ECOFF debugging format. */
-static const struct ecoff_debug_swap mips_elf32_ecoff_debug_swap =
-{
+static const struct ecoff_debug_swap mips_elf32_ecoff_debug_swap = {
/* Symbol table magic number. */
magicSym,
/* Alignment of debugging information. E.g., 4. */
#define elf_backend_collect true
#define elf_backend_type_change_ok true
#define elf_backend_can_gc_sections true
+#define elf_backend_sign_extend_vma true
#define elf_info_to_howto mips_info_to_howto_rela
#define elf_info_to_howto_rel mips_info_to_howto_rel
#define elf_backend_sym_is_global mips_elf_sym_is_global
-#define elf_backend_object_p mips_elf32_object_p
-#define elf_backend_section_from_shdr mips_elf32_section_from_shdr
+#define elf_backend_object_p _bfd_mips_elf_object_p
+#define elf_backend_section_from_shdr _bfd_mips_elf_section_from_shdr
#define elf_backend_fake_sections _bfd_mips_elf_fake_sections
#define elf_backend_section_from_bfd_section \
_bfd_mips_elf_section_from_bfd_section
-#define elf_backend_section_processing mips_elf32_section_processing
+#define elf_backend_section_processing _bfd_mips_elf_section_processing
#define elf_backend_symbol_processing _bfd_mips_elf_symbol_processing
#define elf_backend_additional_program_headers \
- mips_elf_additional_program_headers
-#define elf_backend_modify_segment_map mips_elf_modify_segment_map
+ _bfd_mips_elf_additional_program_headers
+#define elf_backend_modify_segment_map _bfd_mips_elf_modify_segment_map
#define elf_backend_final_write_processing \
_bfd_mips_elf_final_write_processing
#define elf_backend_ecoff_debug_swap &mips_elf32_ecoff_debug_swap
+#define elf_backend_add_symbol_hook _bfd_mips_elf_add_symbol_hook
+#define elf_backend_create_dynamic_sections \
+ _bfd_mips_elf_create_dynamic_sections
+#define elf_backend_check_relocs _bfd_mips_elf_check_relocs
+#define elf_backend_adjust_dynamic_symbol \
+ _bfd_mips_elf_adjust_dynamic_symbol
+#define elf_backend_always_size_sections \
+ _bfd_mips_elf_always_size_sections
+#define elf_backend_size_dynamic_sections \
+ _bfd_mips_elf_size_dynamic_sections
+#define elf_backend_relocate_section _bfd_mips_elf_relocate_section
+#define elf_backend_link_output_symbol_hook \
+ _bfd_mips_elf_link_output_symbol_hook
+#define elf_backend_finish_dynamic_symbol \
+ _bfd_mips_elf_finish_dynamic_symbol
+#define elf_backend_finish_dynamic_sections \
+ _bfd_mips_elf_finish_dynamic_sections
+#define elf_backend_gc_mark_hook _bfd_mips_elf_gc_mark_hook
+#define elf_backend_gc_sweep_hook _bfd_mips_elf_gc_sweep_hook
+
+#define elf_backend_got_header_size (4*MIPS_RESERVED_GOTNO)
+#define elf_backend_plt_header_size 0
+
+#define elf_backend_copy_indirect_symbol \
+ _bfd_mips_elf_copy_indirect_symbol
+
+#define elf_backend_hide_symbol _bfd_mips_elf_hide_symbol
#define bfd_elf32_bfd_is_local_label_name \
mips_elf_is_local_label_name
#define bfd_elf32_find_nearest_line _bfd_mips_elf_find_nearest_line
#define bfd_elf32_set_section_contents _bfd_mips_elf_set_section_contents
#define bfd_elf32_bfd_link_hash_table_create \
- mips_elf_link_hash_table_create
-#define bfd_elf32_bfd_final_link mips_elf_final_link
+ _bfd_mips_elf_link_hash_table_create
+#define bfd_elf32_bfd_final_link _bfd_mips_elf_final_link
#define bfd_elf32_bfd_copy_private_bfd_data \
_bfd_mips_elf_copy_private_bfd_data
#define bfd_elf32_bfd_merge_private_bfd_data \
#define bfd_elf32_bfd_set_private_flags _bfd_mips_elf_set_private_flags
#define bfd_elf32_bfd_print_private_bfd_data \
_bfd_mips_elf_print_private_bfd_data
-#define elf_backend_add_symbol_hook mips_elf_add_symbol_hook
-#define elf_backend_create_dynamic_sections \
- mips_elf_create_dynamic_sections
-#define elf_backend_check_relocs mips_elf_check_relocs
-#define elf_backend_adjust_dynamic_symbol \
- mips_elf_adjust_dynamic_symbol
-#define elf_backend_always_size_sections \
- mips_elf_always_size_sections
-#define elf_backend_size_dynamic_sections \
- mips_elf_size_dynamic_sections
-#define elf_backend_relocate_section mips_elf_relocate_section
-#define elf_backend_link_output_symbol_hook \
- mips_elf_link_output_symbol_hook
-#define elf_backend_finish_dynamic_symbol \
- mips_elf_finish_dynamic_symbol
-#define elf_backend_finish_dynamic_sections \
- mips_elf_finish_dynamic_sections
-#define elf_backend_gc_mark_hook mips_elf_gc_mark_hook
-#define elf_backend_gc_sweep_hook mips_elf_gc_sweep_hook
+#include "elf32-target.h"
-#define elf_backend_got_header_size (4*MIPS_RESERVED_GOTNO)
-#define elf_backend_plt_header_size 0
+/* Support for traditional mips targets */
+
+#define INCLUDED_TARGET_FILE /* More a type of flag */
+
+#undef TARGET_LITTLE_SYM
+#undef TARGET_LITTLE_NAME
+#undef TARGET_BIG_SYM
+#undef TARGET_BIG_NAME
+
+#define TARGET_LITTLE_SYM bfd_elf32_tradlittlemips_vec
+#define TARGET_LITTLE_NAME "elf32-tradlittlemips"
+#define TARGET_BIG_SYM bfd_elf32_tradbigmips_vec
+#define TARGET_BIG_NAME "elf32-tradbigmips"
+/* Include the target file again for this target */
#include "elf32-target.h"
projects / deliverable / binutils-gdb.git / blobdiff