From: Vsevolod Stakhov <vsevolod@highsecure.ru>
Date: Fri, 6 Feb 2015 15:04:41 +0000 (+0000)
Subject: Add platform detector based on cpuid.
X-Git-Tag: 0.9.0~757
X-Git-Url: https://source.dussan.org/?a=commitdiff_plain;h=ea46a2f8c7732b13be1e4cee7618c7293706aa55;p=rspamd.git

Add platform detector based on cpuid.
---

diff --git a/src/libcryptobox/CMakeLists.txt b/src/libcryptobox/CMakeLists.txt
index cf87c2604..a7d8e5a89 100644
--- a/src/libcryptobox/CMakeLists.txt
+++ b/src/libcryptobox/CMakeLists.txt
@@ -3,7 +3,7 @@ INCLUDE(AsmOp.cmake)
 
 TARGET_ARCHITECTURE(ARCH)
 
-SET(CHACHASRC chacha20/ref.c)
+SET(CHACHASRC chacha20/chacha.c chacha20/ref.c)
 SET(POLYSRC poly1305/poly1305-donna.c)
 
 # For now we support only x86_64 architecture with optimizations
diff --git a/src/libcryptobox/cryptobox.c b/src/libcryptobox/cryptobox.c
index 056368e68..e96f4ec09 100644
--- a/src/libcryptobox/cryptobox.c
+++ b/src/libcryptobox/cryptobox.c
@@ -22,14 +22,12 @@
  */
 
 #include "cryptobox.h"
+#include "platform_config.h"
+#include "chacha20/chacha.h"
+#include "poly1305/poly1305-donna.h"
+#include "curve25519/curve25519.h"
 
-struct rspamd_cryptobox_config {
-	gboolean has_sse3;
-	gboolean has_avx;
-	gboolean has_avx2;
-};
-
-
+unsigned long cpu_config = 0;
 
 #ifdef HAVE_WEAK_SYMBOLS
 __attribute__((weak)) void
@@ -60,3 +58,47 @@ rspamd_explicit_memzero(void * const pnt, const gsize len)
 	}
 #endif
 }
+
+static void
+rspamd_cryptobox_cpuid (gint cpu[4], gint info)
+{
+#if defined(__GNUC__) && (defined(__x86_64__) || defined(__i386__))
+	__asm__ __volatile__ (
+			"cpuid":
+			"=a" (cpu[0]),
+			"=b" (cpu[1]),
+			"=c" (cpu[2]),
+			"=d" (cpu[3]) :
+			"a" (info), "c" (0)
+	);
+#else
+	memset (cpu, 0, sizeof (cpu));
+#endif
+}
+
+
+void
+rspamd_cryptobox_init (void)
+{
+	gint cpu[4], nid;
+
+	rspamd_cryptobox_cpuid (cpu, 0);
+	nid = cpu[0];
+
+	if (nid > 1) {
+		if ((cpu[3] & ((gint)1 << 26))) {
+			cpu_config |= CPUID_SSE2;
+		}
+		if ((cpu[2] & ((gint)1 << 28))) {
+			cpu_config |= CPUID_AVX;
+		}
+	}
+	if (nid > 7) {
+		rspamd_cryptobox_cpuid (cpu, 7);
+		if ((cpu[1] & ((gint)1 <<  5))) {
+			cpu_config |= CPUID_AVX2;
+		}
+	}
+
+	chacha_load ();
+}
diff --git a/src/libcryptobox/cryptobox.h b/src/libcryptobox/cryptobox.h
index 60b5d2252..565371b70 100644
--- a/src/libcryptobox/cryptobox.h
+++ b/src/libcryptobox/cryptobox.h
@@ -36,11 +36,6 @@ typedef guchar rspamd_sk_t[rspamd_cryptobox_SKBYTES];
 typedef guchar rspamd_sig_t[rspamd_cryptobox_MACBYTES];
 typedef guchar rspamd_nm_t[rspamd_cryptobox_NMBYTES];
 
-struct rspamd_encrypt_segment {
-	guchar *buf;
-	gsize len;
-};
-
 /**
  * Init cryptobox library
  */
@@ -85,7 +80,7 @@ gboolean rspamd_cryptobox_decrypt_inplace (guchar *data, gsize len,
  * @param sk local secret key
  * @param sig output signature
  */
-void rspamd_cryptobox_encrypt_nm_inplace (struct rspamd_encrypt_segment *segments,
+void rspamd_cryptobox_encrypt_nm_inplace (guchar *data, gsize len,
 		gsize cnt, const rspamd_nm_t nm, rspamd_sig_t sig);
 
 
diff --git a/src/libcryptobox/platform_config.h.in b/src/libcryptobox/platform_config.h.in
index 46bdb741d..d109a7cd0 100644
--- a/src/libcryptobox/platform_config.h.in
+++ b/src/libcryptobox/platform_config.h.in
@@ -8,4 +8,8 @@
 #cmakedefine HAVE_SLASHMACRO 1
 #cmakedefine HAVE_DOLLARMACRO 1
 
+#define CPUID_AVX2 0x1
+#define CPUID_AVX 0x2
+#define CPUID_SSE2 0x4
+
 #endif
\ No newline at end of file