diff options
author | Bernd Edlinger <bernd.edlinger@hotmail.de> | 2019-01-17 15:15:57 +0100 |
---|---|---|
committer | Bernd Edlinger <bernd.edlinger@hotmail.de> | 2019-01-21 15:42:04 +0100 |
commit | c8f370485c43729db44b680e41e875ddd7f3108c (patch) | |
tree | 9ebee84bc6e1cb074273a68000f41f6ee100f887 /crypto/ppccap.c | |
parent | 11642f35531e6afc5d6c4135c5e2ea6057e0e39a (diff) |
PPC: Try out if mftb works before using it
If this fails try out if mfspr268 works.
Use OPENSSL_ppccap=0x20 for enabling mftb,
OPENSSL_ppccap=0x40 for enabling mfspr268,
and OPENSSL_ppccap=0 for enabling neither.
Fixes #8012
Reviewed-by: Paul Dale <paul.dale@oracle.com>
(Merged from https://github.com/openssl/openssl/pull/8043)
Diffstat (limited to 'crypto/ppccap.c')
-rw-r--r-- | crypto/ppccap.c | 55 |
1 files changed, 51 insertions, 4 deletions
diff --git a/crypto/ppccap.c b/crypto/ppccap.c index e50f7574b8..70829e4c0e 100644 --- a/crypto/ppccap.c +++ b/crypto/ppccap.c @@ -168,6 +168,45 @@ void OPENSSL_altivec_probe(void); void OPENSSL_crypto207_probe(void); void OPENSSL_madd300_probe(void); +long OPENSSL_rdtsc_mftb(void); +long OPENSSL_rdtsc_mfspr268(void); + +uint32_t OPENSSL_rdtsc(void) +{ + if (OPENSSL_ppccap_P & PPC_MFTB) + return OPENSSL_rdtsc_mftb(); + else if (OPENSSL_ppccap_P & PPC_MFSPR268) + return OPENSSL_rdtsc_mfspr268(); + else + return 0; +} + +size_t OPENSSL_instrument_bus_mftb(unsigned int *, size_t); +size_t OPENSSL_instrument_bus_mfspr268(unsigned int *, size_t); + +size_t OPENSSL_instrument_bus(unsigned int *out, size_t cnt) +{ + if (OPENSSL_ppccap_P & PPC_MFTB) + return OPENSSL_instrument_bus_mftb(out, cnt); + else if (OPENSSL_ppccap_P & PPC_MFSPR268) + return OPENSSL_instrument_bus_mfspr268(out, cnt); + else + return 0; +} + +size_t OPENSSL_instrument_bus2_mftb(unsigned int *, size_t, size_t); +size_t OPENSSL_instrument_bus2_mfspr268(unsigned int *, size_t, size_t); + +size_t OPENSSL_instrument_bus2(unsigned int *out, size_t cnt, size_t max) +{ + if (OPENSSL_ppccap_P & PPC_MFTB) + return OPENSSL_instrument_bus2_mftb(out, cnt, max); + else if (OPENSSL_ppccap_P & PPC_MFSPR268) + return OPENSSL_instrument_bus2_mfspr268(out, cnt, max); + else + return 0; +} + #if defined(__GLIBC__) && defined(__GLIBC_PREREQ) # if __GLIBC_PREREQ(2, 16) # include <sys/auxv.h> @@ -300,8 +339,6 @@ void OPENSSL_cpuid_setup(void) if (hwcap & HWCAP_ARCH_3_00) { OPENSSL_ppccap_P |= PPC_MADD300; } - - return; } #endif @@ -322,15 +359,16 @@ void OPENSSL_cpuid_setup(void) sigprocmask(SIG_SETMASK, &ill_act.sa_mask, &oset); sigaction(SIGILL, &ill_act, &ill_oact); +#ifndef OSSL_IMPLEMENT_GETAUXVAL if (sigsetjmp(ill_jmp,1) == 0) { OPENSSL_fpu_probe(); OPENSSL_ppccap_P |= PPC_FPU; if (sizeof(size_t) == 4) { -#ifdef __linux +# ifdef __linux struct utsname uts; if (uname(&uts) == 0 && strcmp(uts.machine, "ppc64") == 0) -#endif +# endif if (sigsetjmp(ill_jmp, 1) == 0) { OPENSSL_ppc64_probe(); OPENSSL_ppccap_P |= PPC_FPU64; @@ -355,6 +393,15 @@ void OPENSSL_cpuid_setup(void) OPENSSL_madd300_probe(); OPENSSL_ppccap_P |= PPC_MADD300; } +#endif + + if (sigsetjmp(ill_jmp, 1) == 0) { + OPENSSL_rdtsc_mftb(); + OPENSSL_ppccap_P |= PPC_MFTB; + } else if (sigsetjmp(ill_jmp, 1) == 0) { + OPENSSL_rdtsc_mfspr268(); + OPENSSL_ppccap_P |= PPC_MFSPR268; + } sigaction(SIGILL, &ill_oact, NULL); sigprocmask(SIG_SETMASK, &oset, NULL); |