X-Git-Url: https://git.openssl.org/gitweb/?p=openssl.git;a=blobdiff_plain;f=crypto%2Fppccap.c;h=0ce19511161a2452d726dd0535c32d469cfd36f2;hp=2b7f704cd82af2a01898e12e4f02b60b2c9ad1d6;hb=df2cb82ae397ac7e1466f674ecd2309ac6de14e7;hpb=0f113f3ee4d629ef9a4a30911b22b224772085e5

diff --git a/crypto/ppccap.c b/crypto/ppccap.c
index 2b7f704cd8..0ce1951116 100644
--- a/crypto/ppccap.c
+++ b/crypto/ppccap.c
@@ -1,3 +1,12 @@
+/*
+ * Copyright 2009-2018 The OpenSSL Project Authors. All Rights Reserved.
+ *
+ * Licensed under the OpenSSL license (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>
@@ -7,8 +16,21 @@
 #if defined(__linux) || defined(_AIX)
 # include <sys/utsname.h>
 #endif
-#include <crypto.h>
+#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 <openssl/bn.h>
+#include <internal/cryptlib.h>
+#include <internal/chacha.h>
+#include "bn/bn_lcl.h"
 
 #include "ppc_arch.h"
 
@@ -20,38 +42,24 @@ static sigset_t all_masked;
 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);
+    int bn_mul4x_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 1 || (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);
+    if (num < 4)
+        return 0;
+
+    if ((num & 3) == 0)
+        return bn_mul4x_mont_int(rp, ap, bp, np, n0, num);
+
+    /*
+     * There used to be [optional] call to bn_mul_mont_fpu64 here,
+     * but above subroutine is faster on contemporary processors.
+     * Formulation means that there might be old processors where
+     * FPU code path would be faster, POWER6 perhaps, but there was
+     * no opportunity to figure it out...
+     */
 
     return bn_mul_mont_int(rp, ap, bp, np, n0, num);
 }
@@ -59,6 +67,7 @@ int bn_mul_mont(BN_ULONG *rp, const BN_ULONG *ap, const BN_ULONG *bp,
 
 void sha256_block_p8(void *ctx, const void *inp, size_t len);
 void sha256_block_ppc(void *ctx, const void *inp, size_t len);
+void sha256_block_data_order(void *ctx, const void *inp, size_t len);
 void sha256_block_data_order(void *ctx, const void *inp, size_t len)
 {
     OPENSSL_ppccap_P & PPC_CRYPTO207 ? sha256_block_p8(ctx, inp, len) :
@@ -67,22 +76,159 @@ void sha256_block_data_order(void *ctx, const void *inp, size_t len)
 
 void sha512_block_p8(void *ctx, const void *inp, size_t len);
 void sha512_block_ppc(void *ctx, const void *inp, size_t len);
+void sha512_block_data_order(void *ctx, const void *inp, size_t len);
 void sha512_block_data_order(void *ctx, const void *inp, size_t len)
 {
     OPENSSL_ppccap_P & PPC_CRYPTO207 ? sha512_block_p8(ctx, inp, len) :
         sha512_block_ppc(ctx, inp, len);
 }
 
+#ifndef OPENSSL_NO_CHACHA
+void ChaCha20_ctr32_int(unsigned char *out, const unsigned char *inp,
+                        size_t len, const unsigned int key[8],
+                        const unsigned int counter[4]);
+void ChaCha20_ctr32_vmx(unsigned char *out, const unsigned char *inp,
+                        size_t len, const unsigned int key[8],
+                        const unsigned int counter[4]);
+void ChaCha20_ctr32_vsx(unsigned char *out, const unsigned char *inp,
+                        size_t len, const unsigned int key[8],
+                        const unsigned int counter[4]);
+void ChaCha20_ctr32(unsigned char *out, const unsigned char *inp,
+                    size_t len, const unsigned int key[8],
+                    const unsigned int counter[4])
+{
+    OPENSSL_ppccap_P & PPC_CRYPTO207
+        ? ChaCha20_ctr32_vsx(out, inp, len, key, counter)
+        : OPENSSL_ppccap_P & PPC_ALTIVEC
+            ? ChaCha20_ctr32_vmx(out, inp, len, key, counter)
+            : ChaCha20_ctr32_int(out, inp, len, key, counter);
+}
+#endif
+
+#ifndef OPENSSL_NO_POLY1305
+void poly1305_init_int(void *ctx, const unsigned char key[16]);
+void poly1305_blocks(void *ctx, const unsigned char *inp, size_t len,
+                         unsigned int padbit);
+void poly1305_emit(void *ctx, unsigned char mac[16],
+                       const unsigned int nonce[4]);
+void poly1305_init_fpu(void *ctx, const unsigned char key[16]);
+void poly1305_blocks_fpu(void *ctx, const unsigned char *inp, size_t len,
+                         unsigned int padbit);
+void poly1305_emit_fpu(void *ctx, unsigned char mac[16],
+                       const unsigned int nonce[4]);
+int poly1305_init(void *ctx, const unsigned char key[16], void *func[2]);
+int poly1305_init(void *ctx, const unsigned char key[16], void *func[2])
+{
+    if (sizeof(size_t) == 4 && (OPENSSL_ppccap_P & PPC_FPU)) {
+        poly1305_init_fpu(ctx, key);
+        func[0] = (void*)(uintptr_t)poly1305_blocks_fpu;
+        func[1] = (void*)(uintptr_t)poly1305_emit_fpu;
+    } else {
+        poly1305_init_int(ctx, key);
+        func[0] = (void*)(uintptr_t)poly1305_blocks;
+        func[1] = (void*)(uintptr_t)poly1305_emit;
+    }
+    return 1;
+}
+#endif
+
+#ifdef ECP_NISTZ256_ASM
+void ecp_nistz256_mul_mont(unsigned long res[4], const unsigned long a[4],
+                           const unsigned long b[4]);
+
+void ecp_nistz256_to_mont(unsigned long res[4], const unsigned long in[4]);
+void ecp_nistz256_to_mont(unsigned long res[4], const unsigned long in[4])
+{
+    static const unsigned long RR[] = { 0x0000000000000003U,
+                                        0xfffffffbffffffffU,
+                                        0xfffffffffffffffeU,
+                                        0x00000004fffffffdU };
+
+    ecp_nistz256_mul_mont(res, in, RR);
+}
+
+void ecp_nistz256_from_mont(unsigned long res[4], const unsigned long in[4]);
+void ecp_nistz256_from_mont(unsigned long res[4], const unsigned long in[4])
+{
+    static const unsigned long one[] = { 1, 0, 0, 0 };
+
+    ecp_nistz256_mul_mont(res, in, one);
+}
+#endif
+
 static sigjmp_buf ill_jmp;
 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);
+
+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
+# endif
+#endif
+
+/* I wish <sys/auxv.h> was universally available */
+#define HWCAP                   16      /* AT_HWCAP */
+#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)
+
+#define HWCAP2                  26      /* AT_HWCAP2 */
+#define HWCAP_VEC_CRYPTO        (1U << 25)
+#define HWCAP_ARCH_3_00         (1U << 23)
+
+# if defined(__GNUC__) && __GNUC__>=2
+__attribute__ ((constructor))
+# endif
 void OPENSSL_cpuid_setup(void)
 {
     char *e;
@@ -94,16 +240,6 @@ void OPENSSL_cpuid_setup(void)
         return;
     trigger = 1;
 
-    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);
-
     if ((e = getenv("OPENSSL_ppccap"))) {
         OPENSSL_ppccap_P = strtoul(e, NULL, 0);
         return;
@@ -112,6 +248,8 @@ void OPENSSL_cpuid_setup(void)
     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)
@@ -121,8 +259,99 @@ void OPENSSL_cpuid_setup(void)
         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;
@@ -130,19 +359,25 @@ void OPENSSL_cpuid_setup(void)
     sigprocmask(SIG_SETMASK, &ill_act.sa_mask, &oset);
     sigaction(SIGILL, &ill_act, &ill_oact);
 
-    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
-         */
+#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) {
@@ -154,6 +389,20 @@ void OPENSSL_cpuid_setup(void)
         }
     }
 
+    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);
 }