diff options
Diffstat (limited to 'elf/dl-lookup.c')
| -rw-r--r-- | elf/dl-lookup.c | 21 |
1 files changed, 19 insertions, 2 deletions
diff --git a/elf/dl-lookup.c b/elf/dl-lookup.c index 581fb20e60..6ae6cc310b 100644 --- a/elf/dl-lookup.c +++ b/elf/dl-lookup.c @@ -1016,6 +1016,18 @@ _dl_debug_bindings (const char *undef_name, struct link_map *undef_map, #ifdef SHARED if (GLRO(dl_debug_mask) & DL_DEBUG_PRELINK) { +/* ELF_RTYPE_CLASS_XXX must match RTYPE_CLASS_XXX used by prelink with + LD_TRACE_PRELINKING. */ +#define RTYPE_CLASS_VALID 8 +#define RTYPE_CLASS_PLT (8|1) +#define RTYPE_CLASS_COPY (8|2) +#define RTYPE_CLASS_TLS (8|4) +#if ELF_RTYPE_CLASS_PLT != 0 && ELF_RTYPE_CLASS_PLT != 1 +# error ELF_RTYPE_CLASS_PLT must be 0 or 1! +#endif +#if ELF_RTYPE_CLASS_COPY != 0 && ELF_RTYPE_CLASS_COPY != 2 +# error ELF_RTYPE_CLASS_COPY must be 0 or 2! +#endif int conflict = 0; struct sym_val val = { NULL, NULL }; @@ -1071,12 +1083,17 @@ _dl_debug_bindings (const char *undef_name, struct link_map *undef_map, if (value->s) { + /* Keep only ELF_RTYPE_CLASS_PLT and ELF_RTYPE_CLASS_COPY + bits since since prelink only uses them. */ + type_class &= ELF_RTYPE_CLASS_PLT | ELF_RTYPE_CLASS_COPY; if (__glibc_unlikely (ELFW(ST_TYPE) (value->s->st_info) == STT_TLS)) - type_class = 4; + /* Clear the RTYPE_CLASS_VALID bit in RTYPE_CLASS_TLS. */ + type_class = RTYPE_CLASS_TLS & ~RTYPE_CLASS_VALID; else if (__glibc_unlikely (ELFW(ST_TYPE) (value->s->st_info) == STT_GNU_IFUNC)) - type_class |= 8; + /* Set the RTYPE_CLASS_VALID bit. */ + type_class |= RTYPE_CLASS_VALID; } if (conflict |