patch-2.4.19 linux-2.4.19/arch/ppc64/kernel/hvCall.S

• Lines: 100
• Date: Fri Aug 2 17:39:43 2002
• Orig file: linux-2.4.18/arch/ppc64/kernel/hvCall.S
• Orig date: Wed Dec 31 16:00:00 1969

diff -urN linux-2.4.18/arch/ppc64/kernel/hvCall.S linux-2.4.19/arch/ppc64/kernel/hvCall.S
@@ -0,0 +1,99 @@
+/*
+ * arch/ppc64/kernel/hvCall.S
+ *
+ *
+ * This file contains the code to perform calls to the
+ * iSeries LPAR hypervisor
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation; either version
+ * 2 of the License, or (at your option) any later version.
+ */
+
+#include "ppc_asm.h"
+#include <asm/processor.h>
+#include <linux/config.h>
+
+	.text
+
+/* 
+ * Hypervisor call
+ * 
+ * Invoke the iSeries hypervisor via the System Call instruction
+ * Parameters are passed to this routine in registers r3 - r10
+ * 
+ * r3 contains the HV function to be called
+ * r4-r10 contain the operands to the hypervisor function
+ *
+ */
+
+_GLOBAL(HvCall)
+_GLOBAL(HvCall0)
+_GLOBAL(HvCall1)
+_GLOBAL(HvCall2)
+_GLOBAL(HvCall3)
+_GLOBAL(HvCall4)
+_GLOBAL(HvCall5)
+_GLOBAL(HvCall6)
+_GLOBAL(HvCall7)
+
+
+	mfcr	r0
+	std	r0,-8(r1)
+	stdu	r1,-(STACK_FRAME_OVERHEAD+16)(r1)
+	
+	/* r0 = 0xffffffffffffffff indicates a hypervisor call */
+	
+	li	r0,-1
+	
+	/* Invoke the hypervisor */
+
+	sc
+
+	ld	r1,0(r1)
+	ld	r0,-8(r1)
+	mtcrf	0xff,r0
+
+	/*  return to caller, return value in r3 */
+	
+	blr
+
+_GLOBAL(HvCall0Ret16)
+_GLOBAL(HvCall1Ret16)
+_GLOBAL(HvCall2Ret16)
+_GLOBAL(HvCall3Ret16)
+_GLOBAL(HvCall4Ret16)
+_GLOBAL(HvCall5Ret16)
+_GLOBAL(HvCall6Ret16)
+_GLOBAL(HvCall7Ret16)
+
+	mfcr	r0
+	std	r0,-8(r1)
+	std	r31,-16(r1)
+	stdu	r1,-(STACK_FRAME_OVERHEAD+32)(r1)
+
+	mr	r31,r4
+	li	r0,-1
+	mr	r4,r5
+	mr	r5,r6
+	mr	r6,r7
+	mr	r7,r8
+	mr	r8,r9
+	mr	r9,r10
+
+	sc
+
+	std	r3,0(r31)
+	std	r4,8(r31)
+
+	mr	r3,r5
+
+	ld	r1,0(r1)
+	ld	r0,-8(r1)
+	mtcrf	0xff,r0
+	ld	r31,-16(r1)
+	
+	blr
+
+