diff options
Diffstat (limited to 'sysdeps/s390/s390-32/dl-machine.h')
| -rw-r--r-- | sysdeps/s390/s390-32/dl-machine.h | 151 |
1 files changed, 135 insertions, 16 deletions
diff --git a/sysdeps/s390/s390-32/dl-machine.h b/sysdeps/s390/s390-32/dl-machine.h index 8bbf858fbf..52922a813b 100644 --- a/sysdeps/s390/s390-32/dl-machine.h +++ b/sysdeps/s390/s390-32/dl-machine.h @@ -1,6 +1,5 @@ /* Machine-dependent ELF dynamic relocation inline functions. S390 Version. - Copyright (C) 2000, 2001, 2002, 2003, 2004, 2005 - Free Software Foundation, Inc. + Copyright (C) 2000, 2001, 2002, 2003, 2004 Free Software Foundation, Inc. Contributed by Carl Pederson & Martin Schwidefsky. This file is part of the GNU C Library. @@ -22,6 +21,7 @@ #ifndef dl_machine_h #define dl_machine_h + #define ELF_MACHINE_NAME "s390" #include <sys/param.h> @@ -112,8 +112,7 @@ elf_machine_runtime_setup (struct link_map *l, int lazy, int profile) { got[2] = (Elf32_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; @@ -127,6 +126,124 @@ 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. */ + +/* s390: + Arguments are in register. + r2 - r7 holds the original parameters for the function call, fixup + and trampoline code use r0-r5 and r14-15. For the correct function + call r2-r5 and r14-15 must be restored. + Arguments from the PLT are stored at 24(r15) and 28(r15) + and must be moved to r2 and r3 for the fixup call (see elf32-s390.c + in the binutils for the PLT code). + Fixup function address in r2. +*/ +#ifndef PROF +#define ELF_MACHINE_RUNTIME_TRAMPOLINE \ + asm ( "\ + .text\n\ + .globl _dl_runtime_resolve\n\ + .type _dl_runtime_resolve, @function\n\ + .align 16\n\ + " CFI_STARTPROC "\n\ +_dl_runtime_resolve:\n\ + # save registers\n\ + stm 2,5,32(15)\n\ + st 14,48(15)\n\ + lr 0,15\n\ + ahi 15,-96\n\ + " CFI_ADJUST_CFA_OFFSET(96)"\n\ + st 0,0(15)\n\ + # load args saved by PLT\n\ + lm 2,3,120(15)\n\ + basr 1,0\n\ +0: ahi 1,1f-0b\n\ + l 14,0(1)\n\ + bas 14,0(14,1) # call fixup\n\ + lr 1,2 # function addr returned in r2\n\ + # restore registers\n\ + ahi 15,96\n\ + " CFI_ADJUST_CFA_OFFSET(-96)" \n\ + l 14,48(15)\n\ + lm 2,5,32(15)\n\ + br 1\n\ +1: .long fixup-1b\n\ + " CFI_ENDPROC "\n\ + .size _dl_runtime_resolve, .-_dl_runtime_resolve\n\ +\n\ + .globl _dl_runtime_profile\n\ + .type _dl_runtime_profile, @function\n\ + .align 16\n\ + " CFI_STARTPROC "\n\ +_dl_runtime_profile:\n\ + # save registers\n\ + stm 2,5,32(15)\n\ + st 14,48(15)\n\ + lr 0,15\n\ + ahi 15,-96\n\ + " CFI_ADJUST_CFA_OFFSET(96)"\n\ + st 0,0(15)\n\ + # load args saved by PLT\n\ + lm 2,3,120(15)\n\ + # load return address as third parameter\n\ + lr 4,14\n\ + basr 1,0\n\ +0: ahi 1,1f-0b\n\ + l 14,0(1)\n\ + bas 14,0(14,1) # call fixup\n\ + lr 1,2 # function addr returned in r2\n\ + # restore registers\n\ + ahi 15,96\n\ + " CFI_ADJUST_CFA_OFFSET(-96)" \n\ + l 14,48(15)\n\ + lm 2,5,32(15)\n\ + br 1\n\ +1: .long profile_fixup-1b\n\ + " CFI_ENDPROC "\n\ + .size _dl_runtime_profile, .-_dl_runtime_profile\n\ +"); +#else +#define ELF_MACHINE_RUNTIME_TRAMPOLINE \ + asm ( "\ + .text\n\ + .globl _dl_runtime_resolve\n\ + .globl _dl_runtime_profile\n\ + .type _dl_runtime_resolve, @function\n\ + .type _dl_runtime_profile, @function\n\ + .align 16\n\ + " CFI_STARTPROC "\n\ +_dl_runtime_resolve:\n\ +_dl_runtime_profile:\n\ + # save registers\n\ + stm 2,5,32(15)\n\ + st 14,48(15)\n\ + lr 0,15\n\ + ahi 15,-96\n\ + " CFI_ADJUST_CFA_OFFSET(96)"\n\ + st 0,0(15)\n\ + # load args saved by PLT\n\ + lm 2,3,120(15)\n\ + # load return address as third parameter\n\ + lr 4,14\n\ + basr 1,0\n\ +0: ahi 1,1f-0b\n\ + l 14,0(1)\n\ + bas 14,0(14,1) # call fixup\n\ + lr 1,2 # function addr returned in r2\n\ + # restore registers\n\ + ahi 15,96\n\ + " CFI_ADJUST_CFA_OFFSET(-96)" \n\ + l 14,48(15)\n\ + lm 2,5,32(15)\n\ + br 1\n\ +1: .long fixup-1b\n\ + " CFI_ENDPROC "\n\ + .size _dl_runtime_resolve, .-_dl_runtime_resolve\n\ + .size _dl_runtime_profile, .-_dl_runtime_profile\n\ +"); +#endif + /* Mask identifying addresses reserved for the user program, where the dynamic linker should not map anything. */ #define ELF_MACHINE_USER_ADDRESS_MASK 0xf8000000UL @@ -258,20 +375,15 @@ elf_machine_plt_value (struct link_map *map, const Elf32_Rela *reloc, return value; } -/* Names of the architecture-specific auditing callback functions. */ -#define ARCH_LA_PLTENTER s390_32_gnu_pltenter -#define ARCH_LA_PLTEXIT s390_32_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. */ -auto inline void -__attribute__ ((always_inline)) +static inline void elf_machine_rela (struct link_map *map, const Elf32_Rela *reloc, const Elf32_Sym *sym, const struct r_found_version *version, void *const reloc_addr_arg) @@ -305,8 +417,17 @@ elf_machine_rela (struct link_map *map, const Elf32_Rela *reloc, #ifndef RESOLVE_CONFLICT_FIND_MAP const Elf32_Sym *const refsym = sym; #endif +#if defined USE_TLS && !defined RTLD_BOOTSTRAP struct link_map *sym_map = RESOLVE_MAP (&sym, version, r_type); Elf32_Addr value = sym == NULL ? 0 : sym_map->l_addr + sym->st_value; +#else + Elf32_Addr value = RESOLVE (&sym, version, r_type); + +# ifndef RTLD_BOOTSTRAP + if (sym) +# endif + value += sym->st_value; +#endif /* use TLS and !RTLD_BOOTSTRAP */ switch (r_type) { @@ -418,8 +539,7 @@ elf_machine_rela (struct link_map *map, const Elf32_Rela *reloc, } } -auto inline void -__attribute__ ((always_inline)) +static inline void elf_machine_rela_relative (Elf32_Addr l_addr, const Elf32_Rela *reloc, void *const reloc_addr_arg) { @@ -427,8 +547,7 @@ elf_machine_rela_relative (Elf32_Addr l_addr, const Elf32_Rela *reloc, *reloc_addr = l_addr + reloc->r_addend; } -auto inline void -__attribute__ ((always_inline)) +static inline void elf_machine_lazy_rel (struct link_map *map, Elf32_Addr l_addr, const Elf32_Rela *reloc) { @@ -448,4 +567,4 @@ elf_machine_lazy_rel (struct link_map *map, _dl_reloc_bad_type (map, r_type, 1); } -#endif /* RESOLVE_MAP */ +#endif /* RESOLVE */ |