From 404a4e2fb3e29843d1cc14d2c77cf984cc98b4be Mon Sep 17 00:00:00 2001 From: Roland McGrath Date: Tue, 5 Apr 2005 21:37:05 +0000 Subject: * sysdeps/sparc/sparc32/dl-trampoline.S: New file. * sysdeps/sparc/sparc32/dl-machine.h: Move PLT trampolines there. Use RESOLVE_MAP instead of RESOLVE to protect relocation code. (elf_machine_runtime_setup): Test for dl_profile non-null. * sysdeps/sparc/sparc64/dl-trampoline.S: New file. (ARCH_LA_PLTENTER, ARCH_LA_PLTEXIT): New. * sysdeps/sparc/sparc64/dl-machine.h: Move PLT trampolines there. Use RESOLVE_MAP instead of RESOLVE to protect relocation code. (elf_machine_runtime_setup): Test for dl_profile non-null. * sysdeps/sparc/bits/link.h: New file. * sysdeps/generic/ldsodefs.h (La_sparc32_regs, La_sparc32_retval, La_sparc64_regs, La_sparc64_retval): New. (struct audit_ifaces): Add sparc entries. * elf/tst-auditmod1.c: Add sparc entries. --- sysdeps/sparc/sparc64/dl-machine.h | 165 +++++++++++-------------------------- 1 file changed, 50 insertions(+), 115 deletions(-) (limited to 'sysdeps/sparc/sparc64/dl-machine.h') diff --git a/sysdeps/sparc/sparc64/dl-machine.h b/sysdeps/sparc/sparc64/dl-machine.h index 72b88e235c..e2089cd039 100644 --- a/sysdeps/sparc/sparc64/dl-machine.h +++ b/sysdeps/sparc/sparc64/dl-machine.h @@ -233,7 +233,10 @@ elf_machine_plt_value (struct link_map *map, const Elf64_Rela *reloc, return value; } -#ifdef RESOLVE +#define ARCH_LA_PLTENTER sparc64_gnu_pltenter +#define ARCH_LA_PLTEXIT sparc64_gnu_pltexit + +#ifdef RESOLVE_MAP /* Perform the relocation specified by RELOC and SYM (which is fully resolved). MAP is the object containing the reloc. */ @@ -267,9 +270,10 @@ elf_machine_rela (struct link_map *map, const Elf64_Rela *reloc, value = map->l_addr; else { - value = RESOLVE (&sym, version, r_type); - if (sym) - value += sym->st_value; + struct link_map *sym_map; + + sym_map = RESOLVE_MAP (&sym, version, r_type); + value = (sym_map == NULL) ? 0 : (sym_map->l_addr + sym->st_value); } #else value = 0; @@ -490,74 +494,67 @@ elf_machine_runtime_setup (struct link_map *l, int lazy, int profile) extern void _dl_runtime_profile_1 (void); Elf64_Addr res0_addr, res1_addr; unsigned int *plt = (void *) D_PTR (l, l_info[DT_PLTGOT]); - int i = 0; - if (! profile) - { - res0_addr = (Elf64_Addr) &_dl_runtime_resolve_0; - res1_addr = (Elf64_Addr) &_dl_runtime_resolve_1; - } - else + if (__builtin_expect(profile, 0)) { res0_addr = (Elf64_Addr) &_dl_runtime_profile_0; res1_addr = (Elf64_Addr) &_dl_runtime_profile_1; - if (_dl_name_match_p (GLRO(dl_profile), l)) + + if (GLRO(dl_profile) != NULL + && _dl_name_match_p (GLRO(dl_profile), l)) GL(dl_profile_map) = l; } + else + { + res0_addr = (Elf64_Addr) &_dl_runtime_resolve_0; + res1_addr = (Elf64_Addr) &_dl_runtime_resolve_1; + } /* PLT0 looks like: - save %sp, -192, %sp - sethi %hh(_dl_runtime_{resolve,profile}_0), %l0 - sethi %lm(_dl_runtime_{resolve,profile}_0), %l1 - or %l0, %hm(_dl_runtime_{resolve,profile}_0), %l0 - or %l1, %lo(_dl_runtime_{resolve,profile}_0), %l1 - sllx %l0, 32, %l0 - jmpl %l0 + %l1, %l6 - sethi %hi(0xffc00), %l2 + sethi %uhi(_dl_runtime_{resolve,profile}_0), %g4 + sethi %hi(_dl_runtime_{resolve,profile}_0), %g5 + or %g4, %ulo(_dl_runtime_{resolve,profile}_0), %g4 + or %g5, %lo(_dl_runtime_{resolve,profile}_0), %g5 + sllx %g4, 32, %g4 + add %g4, %g5, %g5 + jmpl %g5, %g4 + nop */ - plt[0] = 0x9de3bf40; - plt[1] = 0x21000000 | (res0_addr >> (64 - 22)); - plt[2] = 0x23000000 | ((res0_addr >> 10) & 0x003fffff); - plt[3] = 0xa0142000 | ((res0_addr >> 32) & 0x3ff); - plt[4] = 0xa2146000 | (res0_addr & 0x3ff); - plt[5] = 0xa12c3020; - plt[6] = 0xadc40011; - plt[7] = 0x250003ff; + plt[0] = 0x09000000 | (res0_addr >> (64 - 22)); + plt[1] = 0x0b000000 | ((res0_addr >> 10) & 0x003fffff); + plt[2] = 0x88112000 | ((res0_addr >> 32) & 0x3ff); + plt[3] = 0x8a116000 | (res0_addr & 0x3ff); + plt[4] = 0x89293020; + plt[5] = 0x8a010005; + plt[6] = 0x89c14000; + plt[7] = 0x01000000; /* PLT1 looks like: - save %sp, -192, %sp - sethi %hh(_dl_runtime_{resolve,profile}_1), %l0 - sethi %lm(_dl_runtime_{resolve,profile}_1), %l1 - or %l0, %hm(_dl_runtime_{resolve,profile}_1), %l0 - or %l1, %lo(_dl_runtime_{resolve,profile}_1), %l1 - sllx %l0, 32, %l0 - jmpl %l0 + %l1, %l6 - srlx %g1, 12, %o1 + sethi %uhi(_dl_runtime_{resolve,profile}_1), %g4 + sethi %hi(_dl_runtime_{resolve,profile}_1), %g5 + or %g4, %ulo(_dl_runtime_{resolve,profile}_1), %g4 + or %g5, %lo(_dl_runtime_{resolve,profile}_1), %g5 + sllx %g4, 32, %g4 + add %g4, %g5, %g5 + jmpl %g5, %g4 + nop */ - plt[8 + 0] = 0x9de3bf40; - if (__builtin_expect (((res1_addr + 4) >> 32) & 0x3ff, 0)) - i = 1; - else - res1_addr += 4; - plt[8 + 1] = 0x21000000 | (res1_addr >> (64 - 22)); - plt[8 + 2] = 0x23000000 | ((res1_addr >> 10) & 0x003fffff); - if (__builtin_expect (i, 0)) - plt[8 + 3] = 0xa0142000 | ((res1_addr >> 32) & 0x3ff); - else - plt[8 + 3] = 0xa12c3020; - plt[8 + 4] = 0xa2146000 | (res1_addr & 0x3ff); - if (__builtin_expect (i, 0)) - plt[8 + 5] = 0xa12c3020; - plt[8 + 5 + i] = 0xadc40011; - plt[8 + 6 + i] = 0x9330700c; + plt[8] = 0x09000000 | (res1_addr >> (64 - 22)); + plt[9] = 0x0b000000 | ((res1_addr >> 10) & 0x003fffff); + plt[10] = 0x88112000 | ((res1_addr >> 32) & 0x3ff); + plt[11] = 0x8a116000 | (res1_addr & 0x3ff); + plt[12] = 0x89293020; + plt[13] = 0x8a010005; + plt[14] = 0x89c14000; + plt[15] = 0x01000000; /* Now put the magic cookie at the beginning of .PLT2 Entry .PLT3 is unused by this implementation. */ - *((struct link_map **)(&plt[16 + 0])) = l; + *((struct link_map **)(&plt[16])) = l; if (__builtin_expect (l->l_info[VALIDX(DT_GNU_PRELINKED)] != NULL, 0) || __builtin_expect (l->l_info [VALIDX (DT_GNU_LIBLISTSZ)] != NULL, 0)) @@ -604,68 +601,6 @@ elf_machine_runtime_setup (struct link_map *l, int lazy, int profile) return lazy; } -/* This code is used in dl-runtime.c to call the `fixup' function - and then redirect to the address it returns. */ -#define TRAMPOLINE_TEMPLATE(tramp_name, fixup_name) \ - asm ("\n" \ -" .text\n" \ -" .globl " #tramp_name "_0\n" \ -" .type " #tramp_name "_0, @function\n" \ -" .align 32\n" \ -"\t" #tramp_name "_0:\n" \ -" ! sethi %hi(1047552), %l2 - Done in .PLT0\n" \ -" ldx [%l6 + 32 + 8], %o0\n" \ -" sub %g1, %l6, %l0\n" \ -" xor %l2, -1016, %l2\n" \ -" sethi %hi(5120), %l3 ! 160 * 32\n" \ -" add %l0, %l2, %l0\n" \ -" sethi %hi(32768), %l4\n" \ -" udivx %l0, %l3, %l3\n" \ -" sllx %l3, 2, %l1\n" \ -" add %l1, %l3, %l1\n" \ -" sllx %l1, 10, %l2\n" \ -" sub %l4, 4, %l4 ! No thanks to Sun for not obeying their own ABI\n" \ -" sllx %l1, 5, %l1\n" \ -" sub %l0, %l2, %l0\n" \ -" udivx %l0, 24, %l0\n" \ -" add %l0, %l4, %l0\n" \ -" add %l1, %l0, %l1\n" \ -" add %l1, %l1, %l0\n" \ -" add %l0, %l1, %l0\n" \ -" mov %i7, %o2\n" \ -" call " #fixup_name "\n" \ -" sllx %l0, 3, %o1\n" \ -" jmp %o0\n" \ -" restore\n" \ -" .size " #tramp_name "_0, . - " #tramp_name "_0\n" \ -"\n" \ -" .globl " #tramp_name "_1\n" \ -" .type " #tramp_name "_1, @function\n" \ -" ! tramp_name_1 + 4 needs to be .align 32\n" \ -"\t" #tramp_name "_1:\n" \ -" sub %l6, 4, %l6\n" \ -" ! srlx %g1, 12, %o1 - Done in .PLT1\n" \ -" ldx [%l6 + 12], %o0\n" \ -" add %o1, %o1, %o3\n" \ -" sub %o1, 96, %o1 ! No thanks to Sun for not obeying their own ABI\n" \ -" mov %i7, %o2\n" \ -" call " #fixup_name "\n" \ -" add %o1, %o3, %o1\n" \ -" jmp %o0\n" \ -" restore\n" \ -" .size " #tramp_name "_1, . - " #tramp_name "_1\n" \ -" .previous\n"); - -#ifndef PROF -#define ELF_MACHINE_RUNTIME_TRAMPOLINE \ - TRAMPOLINE_TEMPLATE (_dl_runtime_resolve, fixup); \ - TRAMPOLINE_TEMPLATE (_dl_runtime_profile, profile_fixup); -#else -#define ELF_MACHINE_RUNTIME_TRAMPOLINE \ - TRAMPOLINE_TEMPLATE (_dl_runtime_resolve, fixup); \ - TRAMPOLINE_TEMPLATE (_dl_runtime_profile, fixup); -#endif - /* The PLT uses Elf64_Rela relocs. */ #define elf_machine_relplt elf_machine_rela -- cgit 1.4.1