- {
- char *e;
-
- sigfillset(&all_masked);
- sigdelset(&all_masked,SIGSEGV);
- sigdelset(&all_masked,SIGILL);
- sigdelset(&all_masked,SIGBUS);
- sigdelset(&all_masked,SIGFPE);
-
- if ((e=getenv("OPENSSL_ppccap")))
- {
- OPENSSL_ppccap_P=strtoul(e,NULL,0);
- return;
- }
-
- if (sizeof(size_t)==4)
- {
- struct sigaction ill_oact,ill_act;
- sigset_t oset;
-
- memset(&ill_act,0,sizeof(ill_act));
- ill_act.sa_handler = ill_handler;
- ill_act.sa_mask = all_masked;
- sigprocmask(SIG_SETMASK,&ill_act.sa_mask,&oset);
- sigaction (SIGILL,&ill_act,&ill_oact);
- if (sigsetjmp(ill_jmp,0) == 0)
- {
- OPENSSL_ppc64_probe();
- OPENSSL_ppccap_P |= PPC_FPU64;
- }
- else
- {
- OPENSSL_ppccap_P &= ~PPC_FPU64;
- }
- sigaction (SIGILL,&ill_oact,NULL);
- sigprocmask(SIG_SETMASK,&oset,NULL);
- }
- }
+{
+ char *e;
+ struct sigaction ill_oact, ill_act;
+ sigset_t oset;
+ static int trigger = 0;
+
+ if (trigger)
+ return;
+ trigger = 1;
+
+ if ((e = getenv("OPENSSL_ppccap"))) {
+ OPENSSL_ppccap_P = strtoul(e, NULL, 0);
+ return;
+ }
+
+ OPENSSL_ppccap_P = 0;
+
+#if defined(_AIX)
+ OPENSSL_ppccap_P |= PPC_FPU;
+
+ if (sizeof(size_t) == 4) {
+ struct utsname uts;
+# if defined(_SC_AIX_KERNEL_BITMODE)
+ if (sysconf(_SC_AIX_KERNEL_BITMODE) != 64)
+ return;
+# endif
+ if (uname(&uts) != 0 || atoi(uts.version) < 6)
+ return;
+ }
+
+# if defined(__power_set)
+ /*
+ * Value used in __power_set is a single-bit 1<<n one denoting
+ * specific processor class. Incidentally 0xffffffff<<n can be
+ * used to denote specific processor and its successors.
+ */
+ if (sizeof(size_t) == 4) {
+ /* In 32-bit case PPC_FPU64 is always fastest [if option] */
+ if (__power_set(0xffffffffU<<13)) /* POWER5 and later */
+ OPENSSL_ppccap_P |= PPC_FPU64;
+ } else {
+ /* In 64-bit case PPC_FPU64 is fastest only on POWER6 */
+ if (__power_set(0x1U<<14)) /* POWER6 */
+ OPENSSL_ppccap_P |= PPC_FPU64;
+ }
+
+ if (__power_set(0xffffffffU<<14)) /* POWER6 and later */
+ OPENSSL_ppccap_P |= PPC_ALTIVEC;
+
+ if (__power_set(0xffffffffU<<16)) /* POWER8 and later */
+ OPENSSL_ppccap_P |= PPC_CRYPTO207;
+
+ if (__power_set(0xffffffffU<<17)) /* POWER9 and later */
+ OPENSSL_ppccap_P |= PPC_MADD300;
+
+ return;
+# endif
+#endif
+
+#if defined(__APPLE__) && defined(__MACH__)
+ OPENSSL_ppccap_P |= PPC_FPU;
+
+ {
+ int val;
+ size_t len = sizeof(val);
+
+ if (sysctlbyname("hw.optional.64bitops", &val, &len, NULL, 0) == 0) {
+ if (val)
+ OPENSSL_ppccap_P |= PPC_FPU64;
+ }
+
+ len = sizeof(val);
+ if (sysctlbyname("hw.optional.altivec", &val, &len, NULL, 0) == 0) {
+ if (val)
+ OPENSSL_ppccap_P |= PPC_ALTIVEC;
+ }
+
+ return;
+ }
+#endif
+
+#ifdef OSSL_IMPLEMENT_GETAUXVAL
+ {
+ unsigned long hwcap = getauxval(HWCAP);
+
+ if (hwcap & HWCAP_FPU) {
+ OPENSSL_ppccap_P |= PPC_FPU;
+
+ if (sizeof(size_t) == 4) {
+ /* In 32-bit case PPC_FPU64 is always fastest [if option] */
+ if (hwcap & HWCAP_PPC64)
+ OPENSSL_ppccap_P |= PPC_FPU64;
+ } else {
+ /* In 64-bit case PPC_FPU64 is fastest only on POWER6 */
+ if (hwcap & HWCAP_POWER6_EXT)
+ OPENSSL_ppccap_P |= PPC_FPU64;
+ }
+ }
+
+ if (hwcap & HWCAP_ALTIVEC) {
+ OPENSSL_ppccap_P |= PPC_ALTIVEC;
+
+ if ((hwcap & HWCAP_VSX) && (getauxval(HWCAP2) & HWCAP_VEC_CRYPTO))
+ OPENSSL_ppccap_P |= PPC_CRYPTO207;
+ }
+
+ if (hwcap & HWCAP_ARCH_3_00) {
+ OPENSSL_ppccap_P |= PPC_MADD300;
+ }
+ }
+#endif
+
+ sigfillset(&all_masked);
+ sigdelset(&all_masked, SIGILL);
+ sigdelset(&all_masked, SIGTRAP);
+#ifdef SIGEMT
+ sigdelset(&all_masked, SIGEMT);
+#endif
+ sigdelset(&all_masked, SIGFPE);
+ sigdelset(&all_masked, SIGBUS);
+ sigdelset(&all_masked, SIGSEGV);
+
+ memset(&ill_act, 0, sizeof(ill_act));
+ ill_act.sa_handler = ill_handler;
+ ill_act.sa_mask = all_masked;
+
+ 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
+ struct utsname uts;
+ if (uname(&uts) == 0 && strcmp(uts.machine, "ppc64") == 0)
+# endif
+ if (sigsetjmp(ill_jmp, 1) == 0) {
+ OPENSSL_ppc64_probe();
+ OPENSSL_ppccap_P |= PPC_FPU64;
+ }
+ } else {
+ /*
+ * Wanted code detecting POWER6 CPU and setting PPC_FPU64
+ */
+ }
+ }
+
+ if (sigsetjmp(ill_jmp, 1) == 0) {
+ OPENSSL_altivec_probe();
+ OPENSSL_ppccap_P |= PPC_ALTIVEC;
+ if (sigsetjmp(ill_jmp, 1) == 0) {
+ OPENSSL_crypto207_probe();
+ OPENSSL_ppccap_P |= PPC_CRYPTO207;
+ }
+ }
+
+ if (sigsetjmp(ill_jmp, 1) == 0) {
+ 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);
+}