patch-2.4.20 linux-2.4.20/include/asm-sparc64/head.h

• Lines: 42
• Date: Thu Nov 28 15:53:15 2002
• Orig file: linux-2.4.19/include/asm-sparc64/head.h
• Orig date: Fri Aug 2 17:39:45 2002

diff -urN linux-2.4.19/include/asm-sparc64/head.h linux-2.4.20/include/asm-sparc64/head.h
@@ -8,4 +8,41 @@
 
 #define	PTREGS_OFF	(STACK_BIAS + REGWIN_SZ)
 
+#define __CHEETAH_ID	0x003e0014
+
+#define CHEETAH_MANUF		0x003e
+#define CHEETAH_IMPL		0x0014
+#define CHEETAH_PLUS_IMPL	0x0015
+
+#define BRANCH_IF_CHEETAH_BASE(tmp1,tmp2,label)	\
+	rdpr	%ver, %tmp1;			\
+	sethi	%hi(__CHEETAH_ID), %tmp2;	\
+	srlx	%tmp1, 32, %tmp1;		\
+	or	%tmp2, %lo(__CHEETAH_ID), %tmp2;\
+	cmp	%tmp1, %tmp2;			\
+	be,pn	%icc, label;			\
+	 nop;
+
+#define BRANCH_IF_CHEETAH_PLUS_OR_FOLLOWON(tmp1,tmp2,label)	\
+	rdpr	%ver, %tmp1;			\
+	srlx	%tmp1, (32 + 16), %tmp2;	\
+	cmp	%tmp2, CHEETAH_MANUF;		\
+	bne,pt	%xcc, 99f;			\
+	 sllx	%tmp1, 16, %tmp1;		\
+	srlx	%tmp1, (32 + 16), %tmp2;	\
+	cmp	%tmp2, CHEETAH_PLUS_IMPL;	\
+	bgeu,pt	%xcc, label;			\
+99:	 nop;
+
+#define BRANCH_IF_ANY_CHEETAH(tmp1,tmp2,label)	\
+	rdpr	%ver, %tmp1;			\
+	srlx	%tmp1, (32 + 16), %tmp2;	\
+	cmp	%tmp2, CHEETAH_MANUF;		\
+	bne,pt	%xcc, 99f;			\
+	 sllx	%tmp1, 16, %tmp1;		\
+	srlx	%tmp1, (32 + 16), %tmp2;	\
+	cmp	%tmp2, CHEETAH_IMPL;		\
+	bgeu,pt	%xcc, label;			\
+99:	 nop;
+
 #endif /* !(_SPARC64_HEAD_H) */