1 files changed, 73 insertions, 0 deletions
diff --git a/arch/powerpc/kernel/misc.S b/arch/powerpc/kernel/misc.S
index 330c9dc7db86..7b9160220698 100644
--- a/arch/powerpc/kernel/misc.S
+++ b/arch/powerpc/kernel/misc.S
@@ -8,12 +8,17 @@
  * Adapted for iSeries by Mike Corrigan (mikejc@us.ibm.com)
  * PPC64 updates by Dave Engebretsen (engebret@us.ibm.com)
  *
+ * setjmp/longjmp code by Paul Mackerras.
+ *
  * 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 <asm/ppc_asm.h>
+#include <asm/unistd.h>
+#include <asm/asm-compat.h>
+#include <asm/asm-offsets.h>
 
 	.text
 
@@ -43,3 +48,71 @@ _GLOBAL(add_reloc_offset)
 	add	r3,r3,r5
 	mtlr	r0
 	blr
+
+_GLOBAL(kernel_execve)
+	li	r0,__NR_execve
+	sc
+	bnslr
+	neg	r3,r3
+	blr
+
+_GLOBAL(setjmp)
+	mflr	r0
+	PPC_STL	r0,0(r3)
+	PPC_STL	r1,SZL(r3)
+	PPC_STL	r2,2*SZL(r3)
+	mfcr	r0
+	PPC_STL	r0,3*SZL(r3)
+	PPC_STL	r13,4*SZL(r3)
+	PPC_STL	r14,5*SZL(r3)
+	PPC_STL	r15,6*SZL(r3)
+	PPC_STL	r16,7*SZL(r3)
+	PPC_STL	r17,8*SZL(r3)
+	PPC_STL	r18,9*SZL(r3)
+	PPC_STL	r19,10*SZL(r3)
+	PPC_STL	r20,11*SZL(r3)
+	PPC_STL	r21,12*SZL(r3)
+	PPC_STL	r22,13*SZL(r3)
+	PPC_STL	r23,14*SZL(r3)
+	PPC_STL	r24,15*SZL(r3)
+	PPC_STL	r25,16*SZL(r3)
+	PPC_STL	r26,17*SZL(r3)
+	PPC_STL	r27,18*SZL(r3)
+	PPC_STL	r28,19*SZL(r3)
+	PPC_STL	r29,20*SZL(r3)
+	PPC_STL	r30,21*SZL(r3)
+	PPC_STL	r31,22*SZL(r3)
+	li	r3,0
+	blr
+
+_GLOBAL(longjmp)
+	PPC_LCMPI r4,0
+	bne	1f
+	li	r4,1
+1:	PPC_LL	r13,4*SZL(r3)
+	PPC_LL	r14,5*SZL(r3)
+	PPC_LL	r15,6*SZL(r3)
+	PPC_LL	r16,7*SZL(r3)
+	PPC_LL	r17,8*SZL(r3)
+	PPC_LL	r18,9*SZL(r3)
+	PPC_LL	r19,10*SZL(r3)
+	PPC_LL	r20,11*SZL(r3)
+	PPC_LL	r21,12*SZL(r3)
+	PPC_LL	r22,13*SZL(r3)
+	PPC_LL	r23,14*SZL(r3)
+	PPC_LL	r24,15*SZL(r3)
+	PPC_LL	r25,16*SZL(r3)
+	PPC_LL	r26,17*SZL(r3)
+	PPC_LL	r27,18*SZL(r3)
+	PPC_LL	r28,19*SZL(r3)
+	PPC_LL	r29,20*SZL(r3)
+	PPC_LL	r30,21*SZL(r3)
+	PPC_LL	r31,22*SZL(r3)
+	PPC_LL	r0,3*SZL(r3)
+	mtcrf	0x38,r0
+	PPC_LL	r0,0(r3)
+	PPC_LL	r1,SZL(r3)
+	PPC_LL	r2,2*SZL(r3)
+	mtlr	r0
+	mr	r3,r4
+	blr