Reduce inputs before the RSAZ code.

[openssl.git] / crypto / sparcv9cap.c

diff --git a/crypto/sparcv9cap.c b/crypto/sparcv9cap.c
index 2058640377b24a9d96223aabf62301c6790fe1e3..c8c567536b33d78cedf4c650cebc64b84ee62b05 100644 (file)
--- a/crypto/sparcv9cap.c
+++ b/crypto/sparcv9cap.c
@@ -1,3 +1,12 @@
+/*
+ * Copyright 2005-2016 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>
@@ -6,6 +15,7 @@
 #include <sys/time.h>
 #include <unistd.h>
 #include <openssl/bn.h>
+#include "internal/cryptlib.h"
 
 #include "sparc_arch.h"
 
@@ -60,9 +70,18 @@ int bn_mul_mont(BN_ULONG *rp, const BN_ULONG *ap, const BN_ULONG *bp,
         if ((OPENSSL_sparcv9cap_P[0] & SPARCV9_VIS3))
             return bn_mul_mont_vis3(rp, ap, bp, np, n0, num);
         else if (num >= 8 &&
-                 (OPENSSL_sparcv9cap_P[0] &
-                  (SPARCV9_PREFER_FPU | SPARCV9_VIS1)) ==
-                 (SPARCV9_PREFER_FPU | SPARCV9_VIS1))
+                 /*
+                  * bn_mul_mont_fpu doesn't use FMADD, we just use the
+                  * flag to detect when FPU path is preferable in cases
+                  * when current heuristics is unreliable. [it works
+                  * out because FMADD-capable processors where FPU
+                  * code path is undesirable are also VIS3-capable and
+                  * VIS3 code path takes precedence.]
+                  */
+                 ( (OPENSSL_sparcv9cap_P[0] & SPARCV9_FMADD) ||
+                   (OPENSSL_sparcv9cap_P[0] &
+                    (SPARCV9_PREFER_FPU | SPARCV9_VIS1)) ==
+                   (SPARCV9_PREFER_FPU | SPARCV9_VIS1) ))
             return bn_mul_mont_fpu(rp, ap, bp, np, n0, num);
     }
     return bn_mul_mont_int(rp, ap, bp, np, n0, num);
@@ -75,11 +94,12 @@ void _sparcv9_vis2_probe(void);
 void _sparcv9_fmadd_probe(void);
 unsigned long _sparcv9_rdcfr(void);
 void _sparcv9_vis3_probe(void);
+void _sparcv9_fjaesx_probe(void);
 unsigned long _sparcv9_random(void);
 size_t _sparcv9_vis1_instrument_bus(unsigned int *, size_t);
 size_t _sparcv9_vis1_instrument_bus2(unsigned int *, size_t, size_t);
 
-unsigned long OPENSSL_rdtsc(void)
+uint32_t OPENSSL_rdtsc(void)
 {
     if (OPENSSL_sparcv9cap_P[0] & SPARCV9_TICK_PRIVILEGED)
 #if defined(__sun) && defined(__SVR4)
@@ -146,19 +166,27 @@ void OPENSSL_cpuid_setup(void)
 
 #if defined(__sun) && defined(__SVR4)
     if (getisax != NULL) {
-        unsigned int vec[1];
-
-        if (getisax (vec,1)) {
-            if (vec[0]&0x0020) OPENSSL_sparcv9cap_P[0] |= SPARCV9_VIS1;
-            if (vec[0]&0x0040) OPENSSL_sparcv9cap_P[0] |= SPARCV9_VIS2;
-            if (vec[0]&0x0080) OPENSSL_sparcv9cap_P[0] |= SPARCV9_BLK;
-            if (vec[0]&0x0100) OPENSSL_sparcv9cap_P[0] |= SPARCV9_FMADD;
-            if (vec[0]&0x0400) OPENSSL_sparcv9cap_P[0] |= SPARCV9_VIS3;
+        unsigned int vec[2] = { 0, 0 };
+
+        if (getisax (vec,2)) {
+            if (vec[0]&0x00020) OPENSSL_sparcv9cap_P[0] |= SPARCV9_VIS1;
+            if (vec[0]&0x00040) OPENSSL_sparcv9cap_P[0] |= SPARCV9_VIS2;
+            if (vec[0]&0x00080) OPENSSL_sparcv9cap_P[0] |= SPARCV9_BLK;
+            if (vec[0]&0x00100) OPENSSL_sparcv9cap_P[0] |= SPARCV9_FMADD;
+            if (vec[0]&0x00400) OPENSSL_sparcv9cap_P[0] |= SPARCV9_VIS3;
+            if (vec[0]&0x01000) OPENSSL_sparcv9cap_P[0] |= SPARCV9_FJHPCACE;
+            if (vec[0]&0x02000) OPENSSL_sparcv9cap_P[0] |= SPARCV9_FJDESX;
+            if (vec[0]&0x08000) OPENSSL_sparcv9cap_P[0] |= SPARCV9_IMA;
+            if (vec[0]&0x10000) OPENSSL_sparcv9cap_P[0] |= SPARCV9_FJAESX;
+            if (vec[1]&0x00008) OPENSSL_sparcv9cap_P[0] |= SPARCV9_VIS4;
 
             /* reconstruct %cfr copy */
             OPENSSL_sparcv9cap_P[1] = (vec[0]>>17)&0x3ff;
             OPENSSL_sparcv9cap_P[1] |= (OPENSSL_sparcv9cap_P[1]&CFR_MONTMUL)<<1;
             if (vec[0]&0x20000000) OPENSSL_sparcv9cap_P[1] |= CFR_CRC32C;
+            if (vec[1]&0x00000020) OPENSSL_sparcv9cap_P[1] |= CFR_XMPMUL;
+            if (vec[1]&0x00000040)
+                OPENSSL_sparcv9cap_P[1] |= CFR_XMONTMUL|CFR_XMONTSQR;
 
             /* Some heuristics */
             /* all known VIS2-capable CPUs have unprivileged tick counter */
@@ -233,6 +261,11 @@ void OPENSSL_cpuid_setup(void)
         OPENSSL_sparcv9cap_P[0] |= SPARCV9_VIS3;
     }
 
+    if (sigsetjmp(common_jmp, 1) == 0) {
+        _sparcv9_fjaesx_probe();
+        OPENSSL_sparcv9cap_P[0] |= SPARCV9_FJAESX;
+    }
+
     /*
      * In wait for better solution _sparcv9_rdcfr is masked by
      * VIS3 flag, because it goes to uninterruptable endless