+/*
+ * Copyright 2009-2022 The OpenSSL Project Authors. All Rights Reserved.
+ *
+ * Licensed under the Apache License 2.0 (the "License"). You may not use
+ * this file except in compliance with the License. You can obtain a copy
+ * in the file LICENSE in the source distribution or at
+ * https://www.openssl.org/source/license.html
+ */
+
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <signal.h>
#include <unistd.h>
#if defined(__linux) || defined(_AIX)
-#include <sys/utsname.h>
+# include <sys/utsname.h>
#endif
-#include <crypto.h>
-#include <openssl/bn.h>
-
-#define PPC_FPU64 (1<<0)
-#define PPC_ALTIVEC (1<<1)
+#if defined(_AIX53) /* defined even on post-5.3 */
+# include <sys/systemcfg.h>
+# if !defined(__power_set)
+# define __power_set(a) (_system_configuration.implementation & (a))
+# endif
+#endif
+#if defined(__APPLE__) && defined(__MACH__)
+# include <sys/types.h>
+# include <sys/sysctl.h>
+#endif
+#include <openssl/crypto.h>
+#include "internal/cryptlib.h"
+#include "crypto/ppc_arch.h"
-static int OPENSSL_ppccap_P = 0;
+unsigned int OPENSSL_ppccap_P = 0;
static sigset_t all_masked;
-#ifdef OPENSSL_BN_ASM_MONT
-int bn_mul_mont(BN_ULONG *rp, const BN_ULONG *ap, const BN_ULONG *bp, const BN_ULONG *np, const BN_ULONG *n0, int num)
- {
- int bn_mul_mont_fpu64(BN_ULONG *rp, const BN_ULONG *ap, const BN_ULONG *bp, const BN_ULONG *np, const BN_ULONG *n0, int num);
- int bn_mul_mont_int(BN_ULONG *rp, const BN_ULONG *ap, const BN_ULONG *bp, const BN_ULONG *np, const BN_ULONG *n0, int num);
-
- if (sizeof(size_t)==4)
- {
-#if (defined(__APPLE__) && defined(__MACH__))
- if (num>=8 && (num&3)==0 && (OPENSSL_ppccap_P&PPC_FPU64))
- return bn_mul_mont_fpu64(rp,ap,bp,np,n0,num);
-#else
- /* boundary of 32 was experimentally determined on
- Linux 2.6.22, might have to be adjusted on AIX... */
- if (num>=32 && (num&3)==0 && (OPENSSL_ppccap_P&PPC_FPU64))
- {
- sigset_t oset;
- int ret;
-
- sigprocmask(SIG_SETMASK,&all_masked,&oset);
- ret=bn_mul_mont_fpu64(rp,ap,bp,np,n0,num);
- sigprocmask(SIG_SETMASK,&oset,NULL);
-
- return ret;
- }
-#endif
- }
- else if ((OPENSSL_ppccap_P&PPC_FPU64))
- /* this is a "must" on POWER6, but run-time detection
- * is not implemented yet... */
- return bn_mul_mont_fpu64(rp,ap,bp,np,n0,num);
-
- return bn_mul_mont_int(rp,ap,bp,np,n0,num);
- }
-#endif
-
static sigjmp_buf ill_jmp;
-static void ill_handler (int sig) { siglongjmp(ill_jmp,sig); }
+static void ill_handler(int sig)
+{
+ siglongjmp(ill_jmp, sig);
+}
+void OPENSSL_fpu_probe(void);
void OPENSSL_ppc64_probe(void);
void OPENSSL_altivec_probe(void);
+void OPENSSL_crypto207_probe(void);
+void OPENSSL_madd300_probe(void);
+void OPENSSL_brd31_probe(void);
-void OPENSSL_cpuid_setup(void)
- {
- char *e;
- struct sigaction ill_oact,ill_act;
- sigset_t oset;
- static int trigger=0;
-
- if (trigger) return;
- trigger=1;
-
- sigfillset(&all_masked);
- sigdelset(&all_masked,SIGILL);
- sigdelset(&all_masked,SIGTRAP);
-#ifdef SIGEMT
- sigdelset(&all_masked,SIGEMT);
+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>
+# define OSSL_IMPLEMENT_GETAUXVAL
+# elif defined(__ANDROID_API__)
+/* see https://developer.android.google.cn/ndk/guides/cpu-features */
+# if __ANDROID_API__ >= 18
+# include <sys/auxv.h>
+# define OSSL_IMPLEMENT_GETAUXVAL
+# endif
+# endif
+#endif
+
+#if defined(__FreeBSD__)
+# include <sys/param.h>
+# if __FreeBSD_version >= 1200000
+# include <sys/auxv.h>
+# define OSSL_IMPLEMENT_GETAUXVAL
+
+static unsigned long getauxval(unsigned long key)
+{
+ unsigned long val = 0ul;
+
+ if (elf_aux_info((int)key, &val, sizeof(val)) != 0)
+ return 0ul;
+
+ return val;
+}
+# endif
#endif
- sigdelset(&all_masked,SIGFPE);
- sigdelset(&all_masked,SIGBUS);
- sigdelset(&all_masked,SIGSEGV);
- if ((e=getenv("OPENSSL_ppccap")))
- {
- OPENSSL_ppccap_P=strtoul(e,NULL,0);
- return;
- }
+/* I wish <sys/auxv.h> was universally available */
+#ifndef AT_HWCAP
+# define AT_HWCAP 16 /* AT_HWCAP */
+#endif
+#define HWCAP_PPC64 (1U << 30)
+#define HWCAP_ALTIVEC (1U << 28)
+#define HWCAP_FPU (1U << 27)
+#define HWCAP_POWER6_EXT (1U << 9)
+#define HWCAP_VSX (1U << 7)
+
+#ifndef AT_HWCAP2
+# define AT_HWCAP2 26 /* AT_HWCAP2 */
+#endif
+#define HWCAP_VEC_CRYPTO (1U << 25)
+#define HWCAP_ARCH_3_00 (1U << 23)
+#define HWCAP_ARCH_3_1 (1U << 18)
+
+# if defined(__GNUC__) && __GNUC__>=2
+__attribute__ ((constructor))
+# endif
+void OPENSSL_cpuid_setup(void)
+{
+ 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;
+ OPENSSL_ppccap_P = 0;
#if defined(_AIX)
- if (sizeof(size_t)==4)
- {
- struct utsname uts;
+ 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;
+ 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;
+
+ if (__power_set(0xffffffffU<<18)) /* POWER10 and later */
+ OPENSSL_ppccap_P |= PPC_BRD31;
+
+ return;
# endif
- if (uname(&uts)!=0 || atoi(uts.version)<6) return;
- }
#endif
- memset(&ill_act,0,sizeof(ill_act));
- ill_act.sa_handler = ill_handler;
- ill_act.sa_mask = all_masked;
+#if defined(__APPLE__) && defined(__MACH__)
+ OPENSSL_ppccap_P |= PPC_FPU;
- sigprocmask(SIG_SETMASK,&ill_act.sa_mask,&oset);
- sigaction(SIGILL,&ill_act,&ill_oact);
+ {
+ int val;
+ size_t len = sizeof(val);
- if (sizeof(size_t)==4)
- {
-#ifdef __linux
- struct utsname uts;
- if (uname(&uts)==0 && strcmp(uts.machine,"ppc64")==0)
+ 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
- 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;
- }
-
- sigaction (SIGILL,&ill_oact,NULL);
- sigprocmask(SIG_SETMASK,&oset,NULL);
- }
+
+#ifdef OSSL_IMPLEMENT_GETAUXVAL
+ {
+ unsigned long hwcap = getauxval(AT_HWCAP);
+ unsigned long hwcap2 = getauxval(AT_HWCAP2);
+
+ 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) && (hwcap2 & HWCAP_VEC_CRYPTO))
+ OPENSSL_ppccap_P |= PPC_CRYPTO207;
+ }
+
+ if (hwcap2 & HWCAP_ARCH_3_00) {
+ OPENSSL_ppccap_P |= PPC_MADD300;
+ }
+
+ if (hwcap2 & HWCAP_ARCH_3_1) {
+ OPENSSL_ppccap_P |= PPC_BRD31;
+ }
+ }
+#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);
+}