diff options
Diffstat (limited to 'sysdeps/powerpc/powerpc32/dl-machine.h')
| -rw-r--r-- | sysdeps/powerpc/powerpc32/dl-machine.h | 117 |
1 files changed, 77 insertions, 40 deletions
diff --git a/sysdeps/powerpc/powerpc32/dl-machine.h b/sysdeps/powerpc/powerpc32/dl-machine.h index 88408a4287..39dbbb412c 100644 --- a/sysdeps/powerpc/powerpc32/dl-machine.h +++ b/sysdeps/powerpc/powerpc32/dl-machine.h @@ -23,6 +23,7 @@ #define ELF_MACHINE_NAME "powerpc" #include <assert.h> +#include <dl-tls.h> /* Return nonzero iff ELF header is compatible with the running host. */ static inline int @@ -275,11 +276,22 @@ __elf_preferred_address(struct link_map *loader, size_t maplength, /* We never want to use a PLT entry as the destination of a reloc, when what is being relocated is a branch. This is partly for efficiency, but mostly so we avoid loops. */ +#if defined USE_TLS && (!defined RTLD_BOOTSTRAP || USE___THREAD) +#define elf_machine_type_class(type) \ + ((((type) == R_PPC_JMP_SLOT \ + || (type) == R_PPC_REL24 \ + || (type) == R_PPC_DTPMOD32 \ + || (type) == R_PPC_DTPREL32 \ + || (type) == R_PPC_TPREL32 \ + || (type) == R_PPC_ADDR24) * ELF_RTYPE_CLASS_PLT) \ + | (((type) == R_PPC_COPY) * ELF_RTYPE_CLASS_COPY)) +#else #define elf_machine_type_class(type) \ ((((type) == R_PPC_JMP_SLOT \ || (type) == R_PPC_REL24 \ || (type) == R_PPC_ADDR24) * ELF_RTYPE_CLASS_PLT) \ | (((type) == R_PPC_COPY) * ELF_RTYPE_CLASS_COPY)) +#endif /* A reloc type used for ld.so cmdline arg lookups to reject PLT entries. */ #define ELF_MACHINE_JMP_SLOT R_PPC_JMP_SLOT @@ -341,44 +353,29 @@ elf_machine_rela (struct link_map *map, const Elf32_Rela *reloc, Elf32_Addr *const reloc_addr) { const Elf32_Sym *const refsym = sym; - Elf32_Word finaladdr; - const int rinfo = ELF32_R_TYPE (reloc->r_info); - -#ifndef RESOLVE_CONFLICT_FIND_MAP - if (__builtin_expect (rinfo == R_PPC_NONE, 0)) - return; + Elf32_Addr value; + const int r_type = ELF32_R_TYPE (reloc->r_info); - /* The condition on the next two lines is a hack around a bug in Solaris - tools on Sparc. It's not clear whether it should really be here at all, - but if not the binutils need to be changed. */ - if (rinfo == R_PPC_RELATIVE - || (sym->st_shndx != SHN_UNDEF - && ELF32_ST_BIND (sym->st_info) == STB_LOCAL)) + if (r_type == R_PPC_RELATIVE) { - /* Has already been relocated. */ - Elf32_Word loadbase = map->l_addr; - finaladdr = loadbase + reloc->r_addend; - } - else - { - Elf32_Word loadbase - = (Elf32_Word) (char *) (RESOLVE (&sym, version, - ELF32_R_TYPE(reloc->r_info))); - if (sym == NULL) - { - /* Weak symbol that wasn't actually defined anywhere. */ - assert (loadbase == 0); - finaladdr = reloc->r_addend; - } - else - finaladdr = (loadbase + (Elf32_Word) (char *) sym->st_value - + reloc->r_addend); + *reloc_addr = map->l_addr + reloc->r_addend; + return; } + + if (__builtin_expect (r_type == R_PPC_NONE, 0)) + return; + +#if defined USE_TLS && !defined RTLD_BOOTSTRAP + struct link_map *sym_map = RESOLVE_MAP (&sym, version, r_type); + value = sym == NULL ? 0 : sym_map->l_addr + sym->st_value; #else - finaladdr = reloc->r_addend; - if (rinfo == R_PPC_JMP_SLOT) - RESOLVE_CONFLICT_FIND_MAP (map, reloc_addr); + value = RESOLVE (&sym, version, r_type); +# ifndef RTLD_BOOTSTRAP + if (sym != NULL) +# endif + value += sym->st_value; #endif + value += reloc->r_addend; /* A small amount of code is duplicated here for speed. In libc, more than 90% of the relocs are R_PPC_RELATIVE; in the X11 shared @@ -386,15 +383,55 @@ elf_machine_rela (struct link_map *map, const Elf32_Rela *reloc, R_PPC_ADDR32, and 16% are R_PPC_JMP_SLOT (which this routine wouldn't usually handle). As an bonus, doing this here allows the switch statement in __process_machine_rela to work. */ - if (rinfo == R_PPC_RELATIVE - || rinfo == R_PPC_GLOB_DAT - || rinfo == R_PPC_ADDR32) + switch (r_type) { - *reloc_addr = finaladdr; + case R_PPC_GLOB_DAT: + case R_PPC_ADDR32: + *reloc_addr = value; + break; + +#if defined USE_TLS && (!defined RTLD_BOOTSTRAP || USE___THREAD) + case R_PPC_DTPMOD32: +# ifdef RTLD_BOOTSTRAP + /* During startup the dynamic linker is always index 1. */ + *reloc_addr = 1; +# else + /* Get the information from the link map returned by the + RESOLVE_MAP function. */ + if (sym_map != NULL) + *reloc_addr = sym_map->l_tls_modid; +# endif + break; + case R_PPC_DTPREL32: + /* During relocation all TLS symbols are defined and used. + Therefore the offset is already correct. */ +# ifndef RTLD_BOOTSTRAP + *reloc_addr = TLS_DTPREL_VALUE (sym, reloc); +# endif + break; + case R_PPC_TPREL32: +# ifndef RTLD_BOOTSTRAP + if (sym_map) + { + CHECK_STATIC_TLS (map, sym_map); +# endif + *reloc_addr = TLS_TPREL_VALUE (sym_map, sym, reloc); +# ifndef RTLD_BOOTSTRAP + } +# endif + break; +#endif /* USE_TLS etc. */ + +#ifdef RESOLVE_CONFLICT_FIND_MAP + case R_PPC_JMP_SLOT: + RESOLVE_CONFLICT_FIND_MAP (map, reloc_addr); + /* FALLTHROUGH */ +#endif + + default: + __process_machine_rela (map, reloc, sym, refsym, + reloc_addr, value, r_type); } - else - __process_machine_rela (map, reloc, sym, refsym, - reloc_addr, finaladdr, rinfo); } static inline void |