1 files changed, 127 insertions, 0 deletions
diff --git a/src/crypto/cpu-intel.c b/src/crypto/cpu-intel.c
new file mode 100644
index 0000000..69f4570
--- /dev/null
+++ b/src/crypto/cpu-intel.c
@@ -0,0 +1,127 @@
+/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
+ * All rights reserved.
+ *
+ * This package is an SSL implementation written
+ * by Eric Young (eay@cryptsoft.com).
+ * The implementation was written so as to conform with Netscapes SSL.
+ *
+ * This library is free for commercial and non-commercial use as long as
+ * the following conditions are aheared to.  The following conditions
+ * apply to all code found in this distribution, be it the RC4, RSA,
+ * lhash, DES, etc., code; not just the SSL code.  The SSL documentation
+ * included with this distribution is covered by the same copyright terms
+ * except that the holder is Tim Hudson (tjh@cryptsoft.com).
+ *
+ * Copyright remains Eric Young's, and as such any Copyright notices in
+ * the code are not to be removed.
+ * If this package is used in a product, Eric Young should be given attribution
+ * as the author of the parts of the library used.
+ * This can be in the form of a textual message at program startup or
+ * in documentation (online or textual) provided with the package.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *    "This product includes cryptographic software written by
+ *     Eric Young (eay@cryptsoft.com)"
+ *    The word 'cryptographic' can be left out if the rouines from the library
+ *    being used are not cryptographic related :-).
+ * 4. If you include any Windows specific code (or a derivative thereof) from
+ *    the apps directory (application code) you must include an acknowledgement:
+ *    "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
+ *
+ * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ * The licence and distribution terms for any publically available version or
+ * derivative of this code cannot be changed.  i.e. this code cannot simply be
+ * copied and put under another distribution licence
+ * [including the GNU Public Licence.] */
+
+#if !defined(__STDC_FORMAT_MACROS)
+#define __STDC_FORMAT_MACROS
+#endif
+
+#include <openssl/cpu.h>
+
+
+#if !defined(OPENSSL_NO_ASM) && (defined(OPENSSL_X86) || defined(OPENSSL_X86_64))
+
+#include <inttypes.h>
+#include <stdio.h>
+#include <string.h>
+
+/* OPENSSL_ia32_cpuid is defined in cpu-x86_64-asm.pl. */
+extern uint64_t OPENSSL_ia32_cpuid(uint32_t*);
+
+/* handle_cpu_env applies the value from |in| to the CPUID values in |out[0]|
+ * and |out[1]|. See the comment in |OPENSSL_cpuid_setup| about this. */
+static void handle_cpu_env(uint32_t *out, const char *in) {
+  const int invert = in[0] == '~';
+  uint64_t v;
+
+  if (!sscanf(in + invert, "%" PRIi64, &v)) {
+    return;
+  }
+
+  if (invert) {
+    out[0] &= ~v;
+    out[1] &= ~(v >> 32);
+  } else {
+    out[0] = v;
+    out[1] = v >> 32;
+  }
+}
+
+void OPENSSL_cpuid_setup(void) {
+  const char *env1, *env2;
+
+#if defined(OPENSSL_X86_64)
+  OPENSSL_ia32_cpuid(OPENSSL_ia32cap_P);
+#else
+  uint64_t vec = OPENSSL_ia32_cpuid(OPENSSL_ia32cap_P);
+  /* 1<<10 sets a reserved bit to indicate that the variable
+   * was already initialised. */
+  OPENSSL_ia32cap_P[0] = ((uint32_t)vec) | (1 << 10);
+  OPENSSL_ia32cap_P[1] = vec >> 32;
+#endif
+
+  env1 = getenv("OPENSSL_ia32cap");
+  if (env1 == NULL) {
+    return;
+  }
+
+  /* OPENSSL_ia32cap can contain zero, one or two values, separated with a ':'.
+   * Each value is a 64-bit, unsigned value which may start with "0x" to
+   * indicate a hex value. Prior to the 64-bit value, a '~' may be given.
+   *
+   * If '~' isn't present, then the value is taken as the result of the CPUID.
+   * Otherwise the value is inverted and ANDed with the probed CPUID result.
+   *
+   * The first value determines OPENSSL_ia32cap_P[0] and [1]. The second [2]
+   * and [3]. */
+
+  handle_cpu_env(&OPENSSL_ia32cap_P[0], env1);
+  env2 = strchr(env1, ':');
+  if (env2 != NULL) {
+    handle_cpu_env(&OPENSSL_ia32cap_P[2], env2 + 1);
+  }
+}
+
+#endif  /* !OPENSSL_NO_ASM && (OPENSSL_X86 || OPENSSL_X86_64) */