diff options
Diffstat (limited to 'sysdeps/alpha/dl-machine.h')
| -rw-r--r-- | sysdeps/alpha/dl-machine.h | 168 |
1 files changed, 155 insertions, 13 deletions
diff --git a/sysdeps/alpha/dl-machine.h b/sysdeps/alpha/dl-machine.h index 4166e8c498..780a3a57fd 100644 --- a/sysdeps/alpha/dl-machine.h +++ b/sysdeps/alpha/dl-machine.h @@ -108,20 +108,19 @@ elf_machine_runtime_setup (struct link_map *l, int lazy, int profile) plt = D_PTR (l, l_info[DT_PLTGOT]); /* This function will be called to perform the relocation. */ - if (__builtin_expect (profile, 0)) + if (!profile) + *(Elf64_Addr *)(plt + 16) = (Elf64_Addr) &_dl_runtime_resolve; + else { *(Elf64_Addr *)(plt + 16) = (Elf64_Addr) &_dl_runtime_profile; - if (GLRO(dl_profile) != NULL - && _dl_name_match_p (GLRO(dl_profile), l)) + if (_dl_name_match_p (GLRO(dl_profile), l)) { /* This is the object we are looking for. Say that we really want profiling and the timers are started. */ GL(dl_profile_map) = l; } } - else - *(Elf64_Addr *)(plt + 16) = (Elf64_Addr) &_dl_runtime_resolve; /* Identify this shared object */ *(Elf64_Addr *)(plt + 24) = (Elf64_Addr) l; @@ -157,6 +156,143 @@ 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, IMB) \ + extern void tramp_name (void); \ + asm ( "\ + .globl " #tramp_name " \n\ + .ent " #tramp_name " \n\ +" #tramp_name ": \n\ + lda $sp, -44*8($sp) \n\ + .frame $sp, 44*8, $26 \n\ + /* Preserve all integer registers that C normally \n\ + doesn't. */ \n\ + stq $26, 0*8($sp) \n\ + stq $0, 1*8($sp) \n\ + stq $1, 2*8($sp) \n\ + stq $2, 3*8($sp) \n\ + stq $3, 4*8($sp) \n\ + stq $4, 5*8($sp) \n\ + stq $5, 6*8($sp) \n\ + stq $6, 7*8($sp) \n\ + stq $7, 8*8($sp) \n\ + stq $8, 9*8($sp) \n\ + stq $16, 10*8($sp) \n\ + stq $17, 11*8($sp) \n\ + stq $18, 12*8($sp) \n\ + stq $19, 13*8($sp) \n\ + stq $20, 14*8($sp) \n\ + stq $21, 15*8($sp) \n\ + stq $22, 16*8($sp) \n\ + stq $23, 17*8($sp) \n\ + stq $24, 18*8($sp) \n\ + stq $25, 19*8($sp) \n\ + stq $29, 20*8($sp) \n\ + stt $f0, 21*8($sp) \n\ + stt $f1, 22*8($sp) \n\ + stt $f10, 23*8($sp) \n\ + stt $f11, 24*8($sp) \n\ + stt $f12, 25*8($sp) \n\ + stt $f13, 26*8($sp) \n\ + stt $f14, 27*8($sp) \n\ + stt $f15, 28*8($sp) \n\ + stt $f16, 29*8($sp) \n\ + stt $f17, 30*8($sp) \n\ + stt $f18, 31*8($sp) \n\ + stt $f19, 32*8($sp) \n\ + stt $f20, 33*8($sp) \n\ + stt $f21, 34*8($sp) \n\ + stt $f22, 35*8($sp) \n\ + stt $f23, 36*8($sp) \n\ + stt $f24, 37*8($sp) \n\ + stt $f25, 38*8($sp) \n\ + stt $f26, 39*8($sp) \n\ + stt $f27, 40*8($sp) \n\ + stt $f28, 41*8($sp) \n\ + stt $f29, 42*8($sp) \n\ + stt $f30, 43*8($sp) \n\ + .mask 0x27ff01ff, -44*8 \n\ + .fmask 0xfffffc03, -(44-21)*8 \n\ + /* Set up our $gp */ \n\ + br $gp, .+4 \n\ + ldgp $gp, 0($gp) \n\ + .prologue 0 \n\ + /* Set up the arguments for fixup: */ \n\ + /* $16 = link_map out of plt0 */ \n\ + /* $17 = offset of reloc entry = ($28 - $27 - 20) /12 * 24 */\n\ + /* $18 = return address */ \n\ + subq $28, $27, $17 \n\ + ldq $16, 8($27) \n\ + subq $17, 20, $17 \n\ + mov $26, $18 \n\ + addq $17, $17, $17 \n\ + /* Do the fixup */ \n\ + bsr $26, " #fixup_name " !samegp \n\ + /* Move the destination address into position. */ \n\ + mov $0, $27 \n\ + /* Restore program registers. */ \n\ + ldq $26, 0*8($sp) \n\ + ldq $0, 1*8($sp) \n\ + ldq $1, 2*8($sp) \n\ + ldq $2, 3*8($sp) \n\ + ldq $3, 4*8($sp) \n\ + ldq $4, 5*8($sp) \n\ + ldq $5, 6*8($sp) \n\ + ldq $6, 7*8($sp) \n\ + ldq $7, 8*8($sp) \n\ + ldq $8, 9*8($sp) \n\ + ldq $16, 10*8($sp) \n\ + ldq $17, 11*8($sp) \n\ + ldq $18, 12*8($sp) \n\ + ldq $19, 13*8($sp) \n\ + ldq $20, 14*8($sp) \n\ + ldq $21, 15*8($sp) \n\ + ldq $22, 16*8($sp) \n\ + ldq $23, 17*8($sp) \n\ + ldq $24, 18*8($sp) \n\ + ldq $25, 19*8($sp) \n\ + ldq $29, 20*8($sp) \n\ + ldt $f0, 21*8($sp) \n\ + ldt $f1, 22*8($sp) \n\ + ldt $f10, 23*8($sp) \n\ + ldt $f11, 24*8($sp) \n\ + ldt $f12, 25*8($sp) \n\ + ldt $f13, 26*8($sp) \n\ + ldt $f14, 27*8($sp) \n\ + ldt $f15, 28*8($sp) \n\ + ldt $f16, 29*8($sp) \n\ + ldt $f17, 30*8($sp) \n\ + ldt $f18, 31*8($sp) \n\ + ldt $f19, 32*8($sp) \n\ + ldt $f20, 33*8($sp) \n\ + ldt $f21, 34*8($sp) \n\ + ldt $f22, 35*8($sp) \n\ + ldt $f23, 36*8($sp) \n\ + ldt $f24, 37*8($sp) \n\ + ldt $f25, 38*8($sp) \n\ + ldt $f26, 39*8($sp) \n\ + ldt $f27, 40*8($sp) \n\ + ldt $f28, 41*8($sp) \n\ + ldt $f29, 42*8($sp) \n\ + ldt $f30, 43*8($sp) \n\ + /* Flush the Icache after having modified the .plt code. */\n\ + " #IMB " \n\ + /* Clean up and turn control to the destination */ \n\ + lda $sp, 44*8($sp) \n\ + jmp $31, ($27) \n\ + .end " #tramp_name) + +#ifndef PROF +#define ELF_MACHINE_RUNTIME_TRAMPOLINE \ + TRAMPOLINE_TEMPLATE (_dl_runtime_resolve, fixup, imb); \ + TRAMPOLINE_TEMPLATE (_dl_runtime_profile, profile_fixup, /* nop */); +#else +#define ELF_MACHINE_RUNTIME_TRAMPOLINE \ + TRAMPOLINE_TEMPLATE (_dl_runtime_resolve, fixup, imb); \ + strong_alias (_dl_runtime_resolve, _dl_runtime_profile); +#endif + /* Initial entry point code for the dynamic linker. The C function `_dl_start' is the real entry point; its return value is the user program's entry point. */ @@ -365,13 +501,9 @@ elf_machine_plt_value (struct link_map *map, const Elf64_Rela *reloc, return value + reloc->r_addend; } -/* Names of the architecture-specific auditing callback functions. */ -#define ARCH_LA_PLTENTER alpha_gnu_pltenter -#define ARCH_LA_PLTEXIT alpha_gnu_pltexit - #endif /* !dl_machine_h */ -#ifdef RESOLVE_MAP +#ifdef RESOLVE /* Perform the relocation specified by RELOC and SYM (which is fully resolved). MAP is the object containing the reloc. */ @@ -423,16 +555,26 @@ elf_machine_rela (struct link_map *map, return; else { - struct link_map *sym_map = RESOLVE_MAP (&sym, version, r_type); Elf64_Addr sym_value; Elf64_Addr sym_raw_value; +#if defined USE_TLS && !defined RTLD_BOOTSTRAP + struct link_map *sym_map = RESOLVE_MAP (&sym, version, r_type); sym_raw_value = sym_value = reloc->r_addend; - if (sym_map) + if (sym) { sym_raw_value += sym->st_value; sym_value = sym_raw_value + sym_map->l_addr; } +#else + Elf64_Addr loadbase = RESOLVE (&sym, version, r_type); + sym_raw_value = sym_value = reloc->r_addend; + if (sym) + { + sym_raw_value += sym->st_value; + sym_value = sym_raw_value + loadbase; + } +#endif if (r_type == R_ALPHA_GLOB_DAT) *reloc_addr = sym_value; @@ -538,4 +680,4 @@ elf_machine_lazy_rel (struct link_map *map, _dl_reloc_bad_type (map, r_type, 1); } -#endif /* RESOLVE_MAP */ +#endif /* RESOLVE */ |