diff options
Diffstat (limited to 'sysdeps/s390/s390-64/dl-machine.h')
| -rw-r--r-- | sysdeps/s390/s390-64/dl-machine.h | 58 |
1 files changed, 33 insertions, 25 deletions
diff --git a/sysdeps/s390/s390-64/dl-machine.h b/sysdeps/s390/s390-64/dl-machine.h index 4020ff4b31..1f7fc2d540 100644 --- a/sysdeps/s390/s390-64/dl-machine.h +++ b/sysdeps/s390/s390-64/dl-machine.h @@ -21,7 +21,7 @@ #ifndef dl_machine_h #define dl_machine_h - + #define ELF_MACHINE_NAME "s390x" #include <sys/param.h> @@ -77,7 +77,7 @@ elf_machine_runtime_setup (struct link_map *l, int lazy, int profile) extern void _dl_runtime_resolve (Elf64_Word); extern void _dl_runtime_profile (Elf64_Word); - if (l->l_info[DT_JMPREL] && lazy) + if (l->l_info[DT_JMPREL] && lazy) { /* The GOT entries for functions in the PLT have not yet been filled in. Their initial contents will arrange when called to push an @@ -96,7 +96,7 @@ elf_machine_runtime_setup (struct link_map *l, int lazy, int profile) if (__builtin_expect (profile, 0)) { got[2] = (Elf64_Addr) &_dl_runtime_profile; - + if (_dl_name_match_p (_dl_profile, l)) /* This is the object we are looking for. Say that we really want profiling and the timers are started. */ @@ -203,7 +203,7 @@ _dl_runtime_profile:\n\ .size _dl_runtime_resolve, .-_dl_runtime_resolve\n\ .size _dl_runtime_profile, .-_dl_runtime_profile\n\ "); -#endif +#endif /* Initial entry point code for the dynamic linker. The C function `_dl_start' is the real entry point; @@ -282,10 +282,10 @@ _dl_start_user:\n\ /* Nonzero iff TYPE describes relocation of a PLT entry, so PLT entries should not be allowed to define the value. */ -#define elf_machine_lookup_noplt_p(type) ((type) == R_390_JMP_SLOT) +#define elf_machine_lookup_noplt_p(type) ((type) == R_390_JMP_SLOT) /* A reloc type used for ld.so cmdline arg lookups to reject PLT entries. */ -#define ELF_MACHINE_JMP_SLOT R_390_JMP_SLOT +#define ELF_MACHINE_JMP_SLOT R_390_JMP_SLOT /* The 64 bit S/390 never uses Elf64_Rel relocations. */ #define ELF_MACHINE_NO_REL 1 @@ -318,9 +318,9 @@ elf_machine_plt_value (struct link_map *map, const Elf64_Rela *reloc, Elf64_Addr value) { return value; -} +} -#endif /* !dl_machine_h */ +#endif /* !dl_machine_h */ #ifdef RESOLVE @@ -332,21 +332,22 @@ elf_machine_rela (struct link_map *map, const Elf64_Rela *reloc, const Elf64_Sym *sym, const struct r_found_version *version, Elf64_Addr *const reloc_addr) { - if (ELF64_R_TYPE (reloc->r_info) == R_390_RELATIVE) { + const unsigned int r_type = ELF64_R_TYPE (reloc->r_info); + + if (__builtin_expect (r_type == R_390_RELATIVE, 0)) + *reloc_addr = map->l_addr + reloc->r_addend; #ifndef RTLD_BOOTSTRAP - weak_extern (_dl_rtld_map); - if (map != &_dl_rtld_map) /* Already done in rtld itself. */ + else if (__builtin_expect (r_type == R_390_NONE, 0)) + return; #endif - *reloc_addr = map->l_addr + reloc->r_addend; - } - else if (ELF64_R_TYPE (reloc->r_info) != R_390_NONE) + else { const Elf64_Sym *const refsym = sym; - Elf64_Addr value = RESOLVE (&sym, version, ELF64_R_TYPE (reloc->r_info)); + Elf64_Addr value = RESOLVE (&sym, version, r_type); if (sym) value += sym->st_value; - - switch (ELF64_R_TYPE (reloc->r_info)) + + switch (r_type) { case R_390_GLOB_DAT: case R_390_JMP_SLOT: @@ -372,7 +373,7 @@ elf_machine_rela (struct link_map *map, const Elf64_Rela *reloc, } memcpy (reloc_addr, (void *) value, MIN (sym->st_size, refsym->st_size)); - break; + break; case R_390_64: *reloc_addr = value + reloc->r_addend; break; @@ -394,7 +395,7 @@ elf_machine_rela (struct link_map *map, const Elf64_Rela *reloc, ((int) (value + reloc->r_addend - (Elf64_Addr) reloc_addr) >> 1); break; case R_390_PC32: - *(unsigned int *) reloc_addr = + *(unsigned int *) reloc_addr = value + reloc->r_addend - (Elf64_Addr) reloc_addr; break; case R_390_PC16DBL: @@ -403,7 +404,7 @@ elf_machine_rela (struct link_map *map, const Elf64_Rela *reloc, ((short) (value + reloc->r_addend - (Elf64_Addr) reloc_addr) >> 1); break; case R_390_PC16: - *(unsigned short *) reloc_addr = + *(unsigned short *) reloc_addr = value + reloc->r_addend - (Elf64_Addr) reloc_addr; break; #endif @@ -411,24 +412,31 @@ elf_machine_rela (struct link_map *map, const Elf64_Rela *reloc, default: /* We add these checks in the version to relocate ld.so only if we are still debugging. */ - _dl_reloc_bad_type (map, ELFW(R_TYPE) (reloc->r_info), 0); + _dl_reloc_bad_type (map, r_type, 0); break; #endif } } -} +} + +static inline void +elf_machine_rel_relative (Elf64_Addr l_addr, const Elf64_Rel *reloc, + Elf64_Addr *const reloc_addr) +{ + *reloc_addr = l_addr + reloc->r_addend; +} static inline void elf_machine_lazy_rel (struct link_map *map, Elf64_Addr l_addr, const Elf64_Rela *reloc) { Elf64_Addr *const reloc_addr = (void *) (l_addr + reloc->r_offset); + const unsigned int r_type = ELF32_R_TYPE (reloc->r_info); /* Check for unexpected PLT reloc type. */ - if (__builtin_expect (ELF64_R_TYPE (reloc->r_info), R_390_JMP_SLOT) - == R_390_JMP_SLOT) + if (__builtin_expect (r_type == R_390_JMP_SLOT, 1)) *reloc_addr += l_addr; else - _dl_reloc_bad_type (map, ELFW(R_TYPE) (reloc->r_info), 1); + _dl_reloc_bad_type (map, r_type, 1); } #endif /* RESOLVE */ |