From: Ben Gras <ben@minix3.org>
Date: Thu, 29 Apr 2010 19:08:49 +0000 (+0000)
Subject: cpufeature() - rename _SSEx and correct logic in cpufeature() in lib
X-Git-Tag: v3.1.7~97
X-Git-Url: http://zhaoyanbai.com/repos/man.genrandom.html?a=commitdiff_plain;h=99a13341bdf05f0e28cbdb38046a982f7d807d78;p=minix.git

cpufeature() - rename _SSEx and correct logic in cpufeature() in lib
---

diff --git a/include/minix/cpufeature.h b/include/minix/cpufeature.h
index 0eea544d9..395f555f1 100644
--- a/include/minix/cpufeature.h
+++ b/include/minix/cpufeature.h
@@ -7,7 +7,7 @@
 #define _CPUF_I386_PGE 		2	/* Page Global Enable */
 #define _CPUF_I386_APIC_ON_CHIP	3	/* APIC is present on the chip */
 #define _CPUF_I386_TSC		4	/* Timestamp counter present */
-#define _CPUF_I386_SSEx		5	/* Support for SSE/SSE2/SSE3/SSSE3/SSE4
+#define _CPUF_I386_SSE1234_12	5	/* Support for SSE/SSE2/SSE3/SSSE3/SSE4
 					 * Extensions and FXSR
 					 */
 #define _CPUF_I386_FXSR		6
diff --git a/lib/libc/arch/i386/misc/_cpufeature.c b/lib/libc/arch/i386/misc/_cpufeature.c
index 8de5cc2ba..e74ed1026 100644
--- a/lib/libc/arch/i386/misc/_cpufeature.c
+++ b/lib/libc/arch/i386/misc/_cpufeature.c
@@ -35,14 +35,12 @@ int _cpufeature(int cpufeature)
 			return edx & CPUID1_EDX_TSC;
 		case _CPUF_I386_FPU:
 			return edx & CPUID1_EDX_FPU;
-		case _CPUF_I386_SSEx:
-			return (edx & (CPUID1_EDX_FXSR |
-					CPUID1_EDX_SSE |
-					CPUID1_EDX_SSE2)) &&
-					(ecx & (CPUID1_ECX_SSE3 |
-					CPUID1_ECX_SSSE3 |
-					CPUID1_ECX_SSE4_1 |
-					CPUID1_ECX_SSE4_2));
+#define SSE_FULL_EDX (CPUID1_EDX_FXSR | CPUID1_EDX_SSE | CPUID1_EDX_SSE2)
+#define SSE_FULL_ECX (CPUID1_ECX_SSE3 | CPUID1_ECX_SSSE3 | \
+	CPUID1_ECX_SSE4_1 | CPUID1_ECX_SSE4_2)
+		case _CPUF_I386_SSE1234_12:
+			return	(edx & SSE_FULL_EDX) == SSE_FULL_EDX &&
+				(ecx & SSE_FULL_ECX) == SSE_FULL_ECX;
 		case _CPUF_I386_FXSR:
 			return edx & CPUID1_EDX_FXSR;
 		case _CPUF_I386_SSE: