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@@ -8,6 +8,89 @@
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/* Define this if the system uses RELOCA. */
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#undef ELF_USES_RELOCA
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#include <elf.h>
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+
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+#ifdef __mips64 /* from glibc sysdeps/mips/elf/ldsodefs.h 1.4 */
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+/* The 64-bit MIPS ELF ABI uses an unusual reloc format. Each
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+ relocation entry specifies up to three actual relocations, all at
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+ the same address. The first relocation which required a symbol
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+ uses the symbol in the r_sym field. The second relocation which
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+ requires a symbol uses the symbol in the r_ssym field. If all
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+ three relocations require a symbol, the third one uses a zero
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+ value.
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+
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+ We define these structures in internal headers because we're not
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+ sure we want to make them part of the ABI yet. Eventually, some of
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+ this may move into elf/elf.h. */
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+
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+/* An entry in a 64 bit SHT_REL section. */
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+
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+typedef struct
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+{
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+ Elf32_Word r_sym; /* Symbol index */
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+ unsigned char r_ssym; /* Special symbol for 2nd relocation */
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+ unsigned char r_type3; /* 3rd relocation type */
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+ unsigned char r_type2; /* 2nd relocation type */
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+ unsigned char r_type1; /* 1st relocation type */
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+} _Elf64_Mips_R_Info;
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+
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+typedef union
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+{
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+ Elf64_Xword r_info_number;
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+ _Elf64_Mips_R_Info r_info_fields;
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+} _Elf64_Mips_R_Info_union;
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+
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+typedef struct
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+{
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+ Elf64_Addr r_offset; /* Address */
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+ _Elf64_Mips_R_Info_union r_info; /* Relocation type and symbol index */
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+} Elf64_Mips_Rel;
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+
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+typedef struct
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+{
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+ Elf64_Addr r_offset; /* Address */
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+ _Elf64_Mips_R_Info_union r_info; /* Relocation type and symbol index */
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+ Elf64_Sxword r_addend; /* Addend */
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+} Elf64_Mips_Rela;
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+
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+#define ELF64_MIPS_R_SYM(i) \
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+ ((__extension__ (_Elf64_Mips_R_Info_union)(i)).r_info_fields.r_sym)
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+#define ELF64_MIPS_R_TYPE(i) \
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+ (((_Elf64_Mips_R_Info_union)(i)).r_info_fields.r_type1 \
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+ | ((Elf32_Word)(__extension__ (_Elf64_Mips_R_Info_union)(i) \
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+ ).r_info_fields.r_type2 << 8) \
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+ | ((Elf32_Word)(__extension__ (_Elf64_Mips_R_Info_union)(i) \
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+ ).r_info_fields.r_type3 << 16) \
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+ | ((Elf32_Word)(__extension__ (_Elf64_Mips_R_Info_union)(i) \
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+ ).r_info_fields.r_ssym << 24))
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+#define ELF64_MIPS_R_INFO(sym, type) \
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+ (__extension__ (_Elf64_Mips_R_Info_union) \
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+ (__extension__ (_Elf64_Mips_R_Info) \
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+ { (sym), ELF64_MIPS_R_SSYM (type), \
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+ ELF64_MIPS_R_TYPE3 (type), \
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+ ELF64_MIPS_R_TYPE2 (type), \
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+ ELF64_MIPS_R_TYPE1 (type) \
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+ }).r_info_number)
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+/* These macros decompose the value returned by ELF64_MIPS_R_TYPE, and
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+ compose it back into a value that it can be used as an argument to
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+ ELF64_MIPS_R_INFO. */
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+#define ELF64_MIPS_R_SSYM(i) (((i) >> 24) & 0xff)
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+#define ELF64_MIPS_R_TYPE3(i) (((i) >> 16) & 0xff)
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+#define ELF64_MIPS_R_TYPE2(i) (((i) >> 8) & 0xff)
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+#define ELF64_MIPS_R_TYPE1(i) ((i) & 0xff)
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+#define ELF64_MIPS_R_TYPEENC(type1, type2, type3, ssym) \
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+ ((type1) \
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+ | ((Elf32_Word)(type2) << 8) \
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+ | ((Elf32_Word)(type3) << 16) \
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+ | ((Elf32_Word)(ssym) << 24))
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+
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+#undef ELF64_R_SYM
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+#define ELF64_R_SYM(i) ELF64_MIPS_R_SYM (i)
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+#undef ELF64_R_TYPE
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+#define ELF64_R_TYPE(i) ELF64_MIPS_R_TYPE (i)
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+#undef ELF64_R_INFO
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+#define ELF64_R_INFO(sym, type) ELF64_MIPS_R_INFO ((sym), (type))
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+#endif /* __mips64 */
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+
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#include <link.h>
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#define ARCH_NUM 3
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@@ -24,7 +107,7 @@ else if (dpnt->d_tag == DT_MIPS_LOCAL_GOTNO) \
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else if (dpnt->d_tag == DT_MIPS_SYMTABNO) \
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dynamic[DT_MIPS_SYMTABNO_IDX] = dpnt->d_un.d_val; \
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else if (dpnt->d_tag == DT_MIPS_RLD_MAP) \
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- *(Elf32_Addr *)(dpnt->d_un.d_ptr) = (Elf32_Addr) debug_addr; \
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+ *(ElfW(Addr) *)(dpnt->d_un.d_ptr) = (ElfW(Addr)) debug_addr; \
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} while (0)
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/* Initialization sequence for the application/library GOT. */
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@@ -64,9 +147,15 @@ struct elf_resolve;
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void _dl_perform_mips_global_got_relocations(struct elf_resolve *tpnt, int lazy);
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/* 4096 bytes alignment */
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+#if _MIPS_SIM == _MIPS_SIM_ABI64
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+#define PAGE_ALIGN (~0xfffUL)
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+#define ADDR_ALIGN 0xfffUL
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+#define OFFS_ALIGN (0x10000000000UL-0x1000)
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+#else /* O32 || N32 */
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#define PAGE_ALIGN 0xfffff000
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#define ADDR_ALIGN 0xfff
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#define OFFS_ALIGN 0x7ffff000
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+#endif /* O32 || N32 */
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#define elf_machine_type_class(type) ELF_RTYPE_CLASS_PLT
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/* MIPS does not have COPY relocs */
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@@ -94,8 +183,13 @@ elf_machine_dynamic (void)
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#define STRINGXP(X) __STRING(X)
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#define STRINGXV(X) STRINGV_(X)
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#define STRINGV_(...) # __VA_ARGS__
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+#if _MIPS_SIM == _MIPS_SIM_ABI64
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+#define PTR_LA dla
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+#define PTR_SUBU dsubu
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+#else
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#define PTR_LA la
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#define PTR_SUBU subu
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+#endif
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/* Return the run-time load address of the shared object. */
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static inline ElfW(Addr)
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@@ -115,8 +209,8 @@ elf_machine_load_address (void)
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}
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static inline void
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-elf_machine_relative (Elf32_Addr load_off, const Elf32_Addr rel_addr,
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- Elf32_Word relative_count)
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+elf_machine_relative (ElfW(Addr) load_off, const ElfW(Addr) rel_addr,
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+ ElfW(Word) relative_count)
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{
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- /* No REALTIVE relocs in MIPS? */
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+ /* No RELATIVE relocs in MIPS? */
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}
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Eric Andersen