diff options
Diffstat (limited to 'include/libc-symbols.h')
| -rw-r--r-- | include/libc-symbols.h | 13 |
1 files changed, 12 insertions, 1 deletions
diff --git a/include/libc-symbols.h b/include/libc-symbols.h index 68da77c58e..252141eb01 100644 --- a/include/libc-symbols.h +++ b/include/libc-symbols.h @@ -1,6 +1,6 @@ /* Support macros for making weak and strong aliases for symbols, and for using symbol sets and linker warnings with GNU ld. - Copyright (C) 1995-1998, 2000-2006, 2008 Free Software Foundation, Inc. + Copyright (C) 1995-1998,2000-2006,2008,2009 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 @@ -845,6 +845,17 @@ for linking") } \ __asm__ (".type " #name ", %gnu_indirect_function"); +/* The body of the function is supposed to use __get_cpu_features + which will, if necessary, initialize the data first. */ +#define libm_ifunc(name, expr) \ + extern void *name##_ifunc (void) __asm__ (#name); \ + void *name##_ifunc (void) \ + { \ + __typeof (name) *res = expr; \ + return res; \ + } \ + __asm__ (".type " #name ", %gnu_indirect_function"); + #ifdef HAVE_ASM_SET_DIRECTIVE # define libc_ifunc_hidden_def1(local, name) \ __asm__ (declare_symbol_alias_1_stringify (ASM_GLOBAL_DIRECTIVE) \ |