diff options
Diffstat (limited to 'ldso/ldso/dl-debug.c')
-rw-r--r-- | ldso/ldso/dl-debug.c | 56 |
1 files changed, 56 insertions, 0 deletions
diff --git a/ldso/ldso/dl-debug.c b/ldso/ldso/dl-debug.c index 7ce8bfbce..1758bc387 100644 --- a/ldso/ldso/dl-debug.c +++ b/ldso/ldso/dl-debug.c @@ -104,3 +104,59 @@ static void debug_reloc(ElfW(Sym) *symtab, char *strtab, ELF_RELOC *rpnt) #define debug_reloc(symtab, strtab, rpnt) #endif /* __SUPPORT_LD_DEBUG__ */ + +#ifdef __LDSO_PRELINK_SUPPORT__ +static void +internal_function +_dl_debug_lookup (const char *undef_name, struct elf_resolve *undef_map, + const ElfW(Sym) *ref, struct symbol_ref *value, int type_class) +{ +#ifdef SHARED + unsigned long symbol_addr; + + if (_dl_trace_prelink) + { + int conflict = 0; + struct symbol_ref val = { ref, NULL }; + + if ((_dl_trace_prelink_map == NULL + || _dl_trace_prelink_map == _dl_loaded_modules) + && undef_map != _dl_loaded_modules) + { + symbol_addr = (unsigned long) + _dl_find_hash(undef_name, &undef_map->symbol_scope, + undef_map, type_class, &val); + + if (val.sym != value->sym || val.tpnt != value->tpnt) + conflict = 1; + } + + if (value->sym + && (__builtin_expect (ELF_ST_TYPE(value->sym->st_info) + == STT_TLS, 0))) + type_class = 4; + + if (conflict + || _dl_trace_prelink_map == undef_map + || _dl_trace_prelink_map == NULL + || type_class == 4) + { + _dl_dprintf (1, "%s %x %x -> %x %x ", + conflict ? "conflict" : "lookup", + (size_t) undef_map->mapaddr, + (size_t) (((ElfW(Addr)) ref) - undef_map->mapaddr), + (size_t) (value->tpnt ? value->tpnt->mapaddr : 0), + (size_t) (value->sym ? value->sym->st_value : 0)); + if (conflict) + _dl_dprintf (1, "x %x %x ", + (size_t) (val.tpnt ? val.tpnt->mapaddr : 0), + (size_t) (val.sym ? val.sym->st_value : 0)); + _dl_dprintf (1, "/%x %s\n", type_class, undef_name); + } +} +#endif +} + +#else +#define _dl_debug_lookup(undef_name, undef_map, ref, value, type_class) +#endif |