From ef26eece6331a1f6d959818e37c438cc7ce68e53 Mon Sep 17 00:00:00 2001 From: Adhemerval Zanella Date: Fri, 15 Mar 2013 10:58:56 -0300 Subject: PowerPC: gettimeofday optimization by using IFUNC --- sysdeps/unix/sysv/linux/powerpc/bits/libc-vdso.h | 10 ++++++++++ 1 file changed, 10 insertions(+) (limited to 'sysdeps/unix/sysv/linux/powerpc/bits') diff --git a/sysdeps/unix/sysv/linux/powerpc/bits/libc-vdso.h b/sysdeps/unix/sysv/linux/powerpc/bits/libc-vdso.h index 545fda462a..5f5fc1eb3a 100644 --- a/sysdeps/unix/sysv/linux/powerpc/bits/libc-vdso.h +++ b/sysdeps/unix/sysv/linux/powerpc/bits/libc-vdso.h @@ -32,6 +32,16 @@ extern void *__vdso_get_tbfreq; extern void *__vdso_getcpu; +/* This macro is needed for PPC64 to return a skeleton OPD entry of a vDSO + symbol. This works because _dl_vdso_vsym always return the function + address, and no vDSO symbols use the TOC or chain pointers from the OPD + so we can allow them to be garbage. */ +#if defined(__PPC64__) || defined(__powerpc64__) +#define VDSO_IFUNC_RET(value) &value +#else +#define VDSO_IFUNC_RET(value) value +#endif + #endif #endif /* _LIBC_VDSO_H */ -- cgit v1.2.3-70-g09d2