patch-2.1.19 linux/arch/sparc64/kernel/etrap.S

• Lines: 53
• Date: Mon Dec 30 11:59:59 1996
• Orig file: v2.1.18/linux/arch/sparc64/kernel/etrap.S
• Orig date: Thu Jan 1 02:00:00 1970

diff -u --recursive --new-file v2.1.18/linux/arch/sparc64/kernel/etrap.S linux/arch/sparc64/kernel/etrap.S
@@ -0,0 +1,52 @@
+/* $Id: etrap.S,v 1.1 1996/12/26 10:16:42 davem Exp $
+ * etrap.S: Preparing for entry into the kernel on Sparc V9.
+ *
+ * Copyright (C) 1996 David S. Miller (davem@caip.rutgers.edu)
+ */
+
+#include <asm/pstate.h>
+#include <asm/ptrace.h>
+
+	.text
+	.align	4
+	.globl	etrap
+etrap:
+	sethi	%uhi(current_set), %g6
+	rd	%tstate, %g1
+	or	%g6, %ulo(current_set), %g6
+	rd	%tpc, %g2
+	sllx	%g6, 32, %g6
+	rd	%tnpc, %g3
+	sethi	%hi(current_set), %g4
+	or	%g4, %lo(current_set), %g4
+	or	%g6, %g4, %g6
+	rd	%y, %g4
+	ldx	[%g6 + THREAD_KSTACK], %g5
+	stx	%g1, [%g5 + REGWIN_SZ + PT_TSTATE]
+	stx	%g2, [%g5 + REGWIN_SZ + PT_TPC]
+	stx	%g3, [%g5 + REGWIN_SZ + PT_TNPC]
+	stx	%g4, [%g5 + REGWIN_SZ + PT_Y]
+	rd	%pstate, %g1
+	andn	%g1, (PSTATE_IG | PSTATE_MG | PSTATE_AG), %g2
+	save	%g5, 0x0, %sp
+	mov	%g2, %l1
+	wr	%g0, 0x0, %tl
+	mov	%g7, %l2
+	wr	%l1, 0x0, %pstate
+	stx	%g1, [%sp + REGWIN_SZ + PT_G1]
+	stx	%g2, [%sp + REGWIN_SZ + PT_G2]
+	stx	%g3, [%sp + REGWIN_SZ + PT_G3]
+	stx	%g4, [%sp + REGWIN_SZ + PT_G4]
+	stx	%g5, [%sp + REGWIN_SZ + PT_G5]
+	stx	%g6, [%sp + REGWIN_SZ + PT_G6]
+	stx	%g7, [%sp + REGWIN_SZ + PT_G7]
+	stx	%i0, [%sp + REGWIN_SZ + PT_I0]
+	stx	%i1, [%sp + REGWIN_SZ + PT_I1]
+	stx	%i2, [%sp + REGWIN_SZ + PT_I2]
+	stx	%i3, [%sp + REGWIN_SZ + PT_I3]
+	stx	%i4, [%sp + REGWIN_SZ + PT_I4]
+	stx	%i5, [%sp + REGWIN_SZ + PT_I5]
+	stx	%i6, [%sp + REGWIN_SZ + PT_I6]
+	stx	%i7, [%sp + REGWIN_SZ + PT_I7]
+	jmpl	%l2 + 0x4, %g0
+	 wr	%l1, PSTATE_IE, %pstate