diff options
Diffstat (limited to 'sysdeps/mips/dl-machine.h')
| -rw-r--r-- | sysdeps/mips/dl-machine.h | 192 |
1 files changed, 1 insertions, 191 deletions
diff --git a/sysdeps/mips/dl-machine.h b/sysdeps/mips/dl-machine.h index cc7198b60e..7456ae0b7a 100644 --- a/sysdeps/mips/dl-machine.h +++ b/sysdeps/mips/dl-machine.h @@ -125,32 +125,11 @@ elf_machine_got (void) } -/* Return the link-time address of _DYNAMIC. Conveniently, this is the - first element of the GOT. This must be inlined in a function which - uses global data. */ -static inline ElfW(Addr) -elf_machine_dynamic (void) -{ - register ElfW(Addr) gp asm ("$28"); - return * (ElfW(Addr) *) (gp - 0x7ff0); -} - /* Return the run-time load address of the shared object. */ static inline ElfW(Addr) elf_machine_load_address (void) { ElfW(Addr) addr; -#ifdef __mips64 - asm (" .set noreorder\n" - " dla %0, here\n" - " bltzal $0, here\n" - " nop\n" - "here: dsubu %0, $31, %0\n" - " .set reorder\n" - : "=r" (addr) - : /* No inputs */ - : "$31"); -#else asm (" .set noreorder\n" " la %0, here\n" " bltzal $0, here\n" @@ -160,7 +139,6 @@ elf_machine_load_address (void) : "=r" (addr) : /* No inputs */ : "$31"); -#endif return addr; } @@ -364,100 +342,6 @@ elf_machine_runtime_link_map (ElfW(Addr) gpreg, ElfW(Addr) stub_pc) t8 index for this function symbol in .dynsym to usual c arguments. */ -#ifdef __mips64 -#define ELF_MACHINE_RUNTIME_TRAMPOLINE \ -/* The flag _dl_mips_gnu_objects is set if all dynamic objects are \ - generated by the gnu linker. */ \ -int _dl_mips_gnu_objects = 1; \ - \ -/* This is called from assembly stubs below which the compiler can't see. */ \ -static ElfW(Addr) \ -__dl_runtime_resolve (ElfW(Word), ElfW(Word), ElfW(Addr), ElfW(Addr)) \ - __attribute__ ((unused)); \ - \ -static ElfW(Addr) \ -__dl_runtime_resolve (ElfW(Word) sym_index, \ - ElfW(Word) return_address, \ - ElfW(Addr) old_gpreg, \ - ElfW(Addr) stub_pc) \ -{ \ - struct link_map *l = elf_machine_runtime_link_map (old_gpreg, stub_pc); \ - const ElfW(Sym) *const symtab \ - = (const ElfW(Sym) *) (l->l_addr + l->l_info[DT_SYMTAB]->d_un.d_ptr); \ - const char *strtab \ - = (void *) (l->l_addr + l->l_info[DT_STRTAB]->d_un.d_ptr); \ - const ElfW(Addr) *got \ - = (const ElfW(Addr) *) (l->l_addr + l->l_info[DT_PLTGOT]->d_un.d_ptr); \ - const ElfW(Word) local_gotno \ - = (const ElfW(Word)) l->l_info[DT_MIPS (LOCAL_GOTNO)]->d_un.d_val; \ - const ElfW(Word) gotsym \ - = (const ElfW(Word)) l->l_info[DT_MIPS (GOTSYM)]->d_un.d_val; \ - const ElfW(Sym) *definer; \ - ElfW(Addr) loadbase; \ - ElfW(Addr) funcaddr; \ - struct link_map **scope; \ - \ - /* Look up the symbol's run-time value. */ \ - scope = _dl_object_relocation_scope (l); \ - definer = &symtab[sym_index]; \ - \ - loadbase = _dl_lookup_symbol (strtab + definer->st_name, &definer, \ - scope, l->l_name, ELF_MACHINE_RELOC_NOPLT); \ - \ - *_dl_global_scope_end = NULL; \ - \ - /* Apply the relocation with that value. */ \ - funcaddr = loadbase + definer->st_value; \ - *(got + local_gotno + sym_index - gotsym) = funcaddr; \ - \ - return funcaddr; \ -} \ - \ -asm ("\n \ - .text\n \ - .align 3\n \ - .globl _dl_runtime_resolve\n \ - .type _dl_runtime_resolve,@function\n \ - .ent _dl_runtime_resolve\n \ -_dl_runtime_resolve:\n \ - .set noreorder\n \ - # Save old GP to $3.\n \ - move $3,$28\n \ - # Modify t9 ($25) so as to point .cpload instruction.\n \ - daddu $25,2*8\n \ - # Compute GP.\n \ - .cpload $25\n \ - .set reorder\n \ - # Save slot call pc.\n \ - move $2, $31\n \ - # Save arguments and sp value in stack.\n \ - dsubu $29, 10*8\n \ - .cprestore 8*8\n \ - sd $15, 9*8($29)\n \ - sd $4, 3*8($29)\n \ - sd $5, 4*8($29)\n \ - sd $6, 5*8($29)\n \ - sd $7, 6*8($29)\n \ - sd $16, 7*8($29)\n \ - move $16, $29\n \ - move $4, $24\n \ - move $5, $15\n \ - move $6, $3\n \ - move $7, $2\n \ - jal __dl_runtime_resolve\n \ - move $29, $16\n \ - ld $31, 9*8($29)\n \ - ld $4, 3*8($29)\n \ - ld $5, 4*8($29)\n \ - ld $6, 5*8($29)\n \ - ld $7, 6*8($29)\n \ - ld $16, 7*8($29)\n \ - daddu $29, 10*8\n \ - move $25, $2\n \ - jr $25\n \ - .end _dl_runtime_resolve\n \ -"); -#else #define ELF_MACHINE_RUNTIME_TRAMPOLINE \ /* The flag _dl_mips_gnu_objects is set if all dynamic objects are \ generated by the gnu linker. */ \ @@ -550,7 +434,6 @@ _dl_runtime_resolve:\n \ jr $25\n \ .end _dl_runtime_resolve\n \ "); -#endif /* Mask identifying addresses reserved for the user program, where the dynamic linker should not map anything. */ @@ -573,78 +456,6 @@ _dl_runtime_resolve:\n \ 2) That under Linux the entry is named __start and not just plain _start. */ -#ifdef __mips64 -#define RTLD_START asm ("\ - .text\n\ - .align 3\n"\ -_RTLD_PROLOGUE (ENTRY_POINT)\ -" .globl _dl_start_user\n\ - .set noreorder\n\ - bltzal $0, 0f\n\ - nop\n\ -0: .cpload $31\n\ - .set reorder\n\ - # i386 ABI book says that the first entry of GOT holds\n\ - # the address of the dynamic structure. Though MIPS ABI\n\ - # doesn't say nothing about this, I emulate this here.\n\ - dla $4, _DYNAMIC\n\ - sd $4, -0x7ff0($28)\n\ - move $4, $29\n\ - jal _dl_start\n\ - # Get the value of label '_dl_start_user' in t9 ($25).\n\ - dla $25, _dl_start_user\n\ -_dl_start_user:\n\ - .set noreorder\n\ - .cpload $25\n\ - .set reorder\n\ - move $16, $28\n\ - # Save the user entry point address in saved register.\n\ - move $17, $2\n\ - # See if we were run as a command with the executable file\n\ - # name as an extra leading argument.\n\ - ld $2, _dl_skip_args\n\ - beq $2, $0, 1f\n\ - # Load the original argument count.\n\ - ld $4, 0($29)\n\ - # Subtract _dl_skip_args from it.\n\ - dsubu $4, $2\n\ - # Adjust the stack pointer to skip _dl_skip_args words.\n\ - dsll $2,2\n\ - daddu $29, $2\n\ - # Save back the modified argument count.\n\ - sd $4, 0($29)\n\ - # Get _dl_default_scope[2] as argument in _dl_init_next call below.\n\ -1: dla $2, _dl_default_scope\n\ - ld $4, 2*8($2)\n\ - # Call _dl_init_next to return the address of an initializer\n\ - # function to run.\n\ - jal _dl_init_next\n\ - move $28, $16\n\ - # Check for zero return, when out of initializers.\n\ - beq $2, $0, 2f\n\ - # Call the shared object initializer function.\n\ - move $25, $2\n\ - ld $4, 0($29)\n\ - ld $5, 1*8($29)\n\ - ld $6, 2*8($29)\n\ - ld $7, 3*8($29)\n\ - jalr $25\n\ - move $28, $16\n\ - # Loop to call _dl_init_next for the next initializer.\n\ - b 1b\n\ - # Pass our finalizer function to the user in ra.\n\ -2: dla $31, _dl_fini\n\ - # Jump to the user entry point.\n\ - move $25, $17\n\ - ld $4, 0($29)\n\ - ld $5, 1*8($29)\n\ - ld $6, 2*8$29)\n\ - ld $7, 3*8($29)\n\ - jr $25\n"\ -_RTLD_EPILOGUE(ENTRY_POINT) \ -); - -#else #define RTLD_START asm ("\ .text\n"\ _RTLD_PROLOGUE(ENTRY_POINT)\ @@ -718,8 +529,7 @@ _dl_start_user:\n\ lw $7, 12($29)\n\ jr $25\n"\ _RTLD_EPILOGUE(ENTRY_POINT)\ -"); -#endif +); /* The MIPS never uses Elfxx_Rela relocations. */ #define ELF_MACHINE_NO_RELA 1 |