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PowerPC: gettimeofday optimization by using IFUNC

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This commit is contained in:
Adhemerval Zanella
2013-03-15 10:58:56 -03:00
parent 8cfdb7e056
commit ef26eece63
4 changed files with 53 additions and 54 deletions
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10
sysdeps/unix/sysv/linux/powerpc/bits/libc-vdso.h
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@ -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 */