base/asm-common.h: Add include guards.

[catacomb] / base / asm-common.h

diff --git a/base/asm-common.h b/base/asm-common.h
index 8e51ea3..d1b23a6 100644 (file)
--- a/base/asm-common.h
+++ b/base/asm-common.h
@@ -24,6 +24,9 @@
 /// Software Foundation, Inc., 59 Temple Place - Suite 330, Boston,
 /// MA 02111-1307, USA.
 
+#ifndef CATACOMB_ASM_COMMON_H
+#define CATACOMB_ASM_COMMON_H
+
 ///--------------------------------------------------------------------------
 /// General definitions.
 
@@ -217,11 +220,11 @@ name:
 #  define INTADDR__1(addr, got) addr
 #endif
 
-// Permutations for SIMD instructions.  SHUF(D, C, B, A) is an immediate,
-// suitable for use in `pshufd' or `shufpd', which copies element D
-// (0 <= D < 4) of the source to element 3 of the destination, element C to
-// element 2, element B to element 1, and element A to element 0.
-#define SHUF(d, c, b, a) (64*(d) + 16*(c) + 4*(b) + (a))
+// Permutations for SIMD instructions.  SHUF(A, B, C, D) is an immediate,
+// suitable for use in `pshufd' or `shufpd', which copies element A
+// (0 <= A < 4) of the source to element 0 of the destination, element B to
+// element 1, element C to element 2, and element D to element 3.
+#define SHUF(a, b, c, d) ((a) + 4*(b) + 16*(c) + 64*(d))
 
 // Map register names to their individual pieces.
 
@@ -1181,3 +1184,5 @@ name:
 #endif
 
 ///----- That's all, folks --------------------------------------------------
+
+#endif