diff options
Diffstat (limited to 'sysdeps/sparc/sparc32/dl-machine.h')
| -rw-r--r-- | sysdeps/sparc/sparc32/dl-machine.h | 81 |
1 files changed, 29 insertions, 52 deletions
diff --git a/sysdeps/sparc/sparc32/dl-machine.h b/sysdeps/sparc/sparc32/dl-machine.h index b3b7852d87..e1385f7aca 100644 --- a/sysdeps/sparc/sparc32/dl-machine.h +++ b/sysdeps/sparc/sparc32/dl-machine.h @@ -1,5 +1,5 @@ /* Machine-dependent ELF dynamic relocation inline functions. SPARC version. - Copyright (C) 1996-2003, 2004, 2005, 2006, 2007 + Copyright (C) 1996-2003, 2004, 2005, 2006, 2007, 2010 Free Software Foundation, Inc. This file is part of the GNU C Library. @@ -27,20 +27,13 @@ #include <sys/param.h> #include <ldsodefs.h> #include <tls.h> +#include <dl-plt.h> #ifndef VALIDX # define VALIDX(tag) (DT_NUM + DT_THISPROCNUM + DT_VERSIONTAGNUM \ + DT_EXTRANUM + DT_VALTAGIDX (tag)) #endif -/* Some SPARC opcodes we need to use for self-modifying code. */ -#define OPCODE_NOP 0x01000000 /* nop */ -#define OPCODE_CALL 0x40000000 /* call ?; add PC-rel word address */ -#define OPCODE_SETHI_G1 0x03000000 /* sethi ?, %g1; add value>>10 */ -#define OPCODE_JMP_G1 0x81c06000 /* jmp %g1+?; add lo 10 bits of value */ -#define OPCODE_SAVE_SP 0x9de3bfa8 /* save %sp, -(16+6)*4, %sp */ -#define OPCODE_BA 0x30800000 /* b,a ?; add PC-rel word address */ - /* Return nonzero iff ELF header is compatible with the running host. */ static inline int elf_machine_matches_host (const Elf32_Ehdr *ehdr) @@ -312,41 +305,6 @@ _dl_start_user:\n\ .size _dl_start_user, . - _dl_start_user\n\ .previous"); -static inline __attribute__ ((always_inline)) Elf32_Addr -sparc_fixup_plt (const Elf32_Rela *reloc, Elf32_Addr *reloc_addr, - Elf32_Addr value, int t, int do_flush) -{ - Elf32_Sword disp = value - (Elf32_Addr) reloc_addr; - - if (0 && disp >= -0x800000 && disp < 0x800000) - { - /* Don't need to worry about thread safety. We're writing just one - instruction. */ - - reloc_addr[0] = OPCODE_BA | ((disp >> 2) & 0x3fffff); - if (do_flush) - __asm __volatile ("flush %0" : : "r"(reloc_addr)); - } - else - { - /* For thread safety, write the instructions from the bottom and - flush before we overwrite the critical "b,a". This of course - need not be done during bootstrapping, since there are no threads. - But we also can't tell if we _can_ use flush, so don't. */ - - reloc_addr += t; - reloc_addr[1] = OPCODE_JMP_G1 | (value & 0x3ff); - if (do_flush) - __asm __volatile ("flush %0+4" : : "r"(reloc_addr)); - - reloc_addr[0] = OPCODE_SETHI_G1 | (value >> 10); - if (do_flush) - __asm __volatile ("flush %0" : : "r"(reloc_addr)); - } - - return value; -} - static inline Elf32_Addr elf_machine_fixup_plt (struct link_map *map, lookup_t t, const Elf32_Rela *reloc, @@ -433,6 +391,13 @@ elf_machine_rela (struct link_map *map, const Elf32_Rela *reloc, value += reloc->r_addend; /* Assume copy relocs have zero addend. */ + if (sym != NULL + && __builtin_expect (ELFW(ST_TYPE) (sym->st_info) == STT_GNU_IFUNC, 0) + && __builtin_expect (sym->st_shndx != SHN_UNDEF, 1)) + { + value = ((Elf32_Addr (*) (void)) value) (); + } + switch (r_type) { #if !defined RTLD_BOOTSTRAP && !defined RESOLVE_CONFLICT_FIND_MAP @@ -460,6 +425,13 @@ elf_machine_rela (struct link_map *map, const Elf32_Rela *reloc, case R_SPARC_32: *reloc_addr = value; break; + case R_SPARC_IRELATIVE: + value = ((Elf32_Addr (*) (void)) value) (); + *reloc_addr = value; + break; + case R_SPARC_JMP_IREL: + value = ((Elf32_Addr (*) (void)) value) (); + /* Fall thru */ case R_SPARC_JMP_SLOT: { #if !defined RTLD_BOOTSTRAP && !defined __sparc_v9__ @@ -578,16 +550,21 @@ __attribute__ ((always_inline)) elf_machine_lazy_rel (struct link_map *map, Elf32_Addr l_addr, const Elf32_Rela *reloc) { - switch (ELF32_R_TYPE (reloc->r_info)) + Elf32_Addr *const reloc_addr = (void *) (l_addr + reloc->r_offset); + const unsigned int r_type = ELF32_R_TYPE (reloc->r_info); + + if (__builtin_expect (r_type == R_SPARC_JMP_SLOT, 1)) + ; + else if (r_type == R_SPARC_JMP_IREL) { - case R_SPARC_NONE: - break; - case R_SPARC_JMP_SLOT: - break; - default: - _dl_reloc_bad_type (map, ELFW(R_TYPE) (reloc->r_info), 1); - break; + Elf32_Addr value = map->l_addr + reloc->r_addend; + value = ((Elf32_Addr (*) (void)) value) (); + sparc_fixup_plt (reloc, reloc_addr, value, 0, 1); } + else if (r_type == R_SPARC_NONE) + ; + else + _dl_reloc_bad_type (map, r_type, 1); } #endif /* RESOLVE_MAP */ |