diff options
Diffstat (limited to 'elf')
| -rw-r--r-- | elf/dl-runtime.c | 14 | ||||
| -rw-r--r-- | elf/do-lookup.h | 12 | ||||
| -rw-r--r-- | elf/elf.h | 1 |
3 files changed, 21 insertions, 6 deletions
diff --git a/elf/dl-runtime.c b/elf/dl-runtime.c index 968e293409..962f47de64 100644 --- a/elf/dl-runtime.c +++ b/elf/dl-runtime.c @@ -1,5 +1,5 @@ /* On-demand PLT fixup for shared objects. - Copyright (C) 1995-2006, 2007 Free Software Foundation, Inc. + Copyright (C) 1995-2006, 2007, 2008 Free Software Foundation, Inc. This file is part of the GNU C Library. The GNU C Library is free software; you can redistribute it and/or @@ -130,6 +130,9 @@ _dl_fixup ( /* And now perhaps the relocation addend. */ value = elf_machine_plt_value (l, reloc, value); + if (__builtin_expect (ELFW(ST_TYPE) (sym->st_info) == STT_GNU_IFUNC, 0)) + value = ((DL_FIXUP_VALUE_TYPE (*) (void)) value) (); + /* Finally, fix up the plt itself. */ if (__builtin_expect (GLRO(dl_bind_not), 0)) return value; @@ -215,12 +218,21 @@ _dl_profile_fixup ( defsym != NULL ? LOOKUP_VALUE_ADDRESS (result) + defsym->st_value : 0); + + if (__builtin_expect (ELFW(ST_TYPE) (defsym->st_info) + == STT_GNU_IFUNC, 0)) + value = ((DL_FIXUP_VALUE_TYPE (*) (void)) value) (); } else { /* We already found the symbol. The module (and therefore its load address) is also known. */ value = DL_FIXUP_MAKE_VALUE (l, l->l_addr + refsym->st_value); + + if (__builtin_expect (ELFW(ST_TYPE) (refsym->st_info) + == STT_GNU_IFUNC, 0)) + value = ((DL_FIXUP_VALUE_TYPE (*) (void)) value) (); + result = l; } /* And now perhaps the relocation addend. */ diff --git a/elf/do-lookup.h b/elf/do-lookup.h index ebb9ed5b47..41e5fc137c 100644 --- a/elf/do-lookup.h +++ b/elf/do-lookup.h @@ -1,5 +1,5 @@ /* Look up a symbol in the loaded objects. - Copyright (C) 1995-2004, 2005, 2006, 2007 Free Software Foundation, Inc. + Copyright (C) 1995-2007, 2008 Free Software Foundation, Inc. This file is part of the GNU C Library. The GNU C Library is free software; you can redistribute it and/or @@ -88,10 +88,12 @@ do_lookup_x (const char *undef_name, uint_fast32_t new_hash, if (__builtin_expect (ELFW(ST_TYPE) (sym->st_info) > STT_FUNC && ELFW(ST_TYPE) (sym->st_info) != STT_COMMON - && ELFW(ST_TYPE) (sym->st_info) != STT_TLS, 0)) - /* Ignore all but STT_NOTYPE, STT_OBJECT, STT_FUNC, and STT_COMMON - entries (and STT_TLS if TLS is supported) since these - are no code/data definitions. */ + && ELFW(ST_TYPE) (sym->st_info) != STT_TLS + && ELFW(ST_TYPE) (sym->st_info) != STT_GNU_IFUNC, + 0)) + /* Ignore all but STT_NOTYPE, STT_OBJECT, STT_FUNC, STT_COMMON, + STT_TLS, and STT_GNU_IFUNC since these are no code/data + definitions. */ return NULL; if (sym != ref && strcmp (strtab + sym->st_name, undef_name)) @@ -459,6 +459,7 @@ typedef struct #define STT_TLS 6 /* Symbol is thread-local data object*/ #define STT_NUM 7 /* Number of defined types. */ #define STT_LOOS 10 /* Start of OS-specific */ +#define STT_GNU_IFUNC 10 /* Symbol is indirect code object */ #define STT_HIOS 12 /* End of OS-specific */ #define STT_LOPROC 13 /* Start of processor-specific */ #define STT_HIPROC 15 /* End of processor-specific */ |