--- /dev/null
+/*
+ * Copyright 2014, Michael Ellerman, IBM Corp.
+ * Licensed under GPLv2.
+ */
+
+#include <ppc-asm.h>
+
+ .text
+
+FUNC_START(core_busy_loop)
+ stdu %r1, -168(%r1)
+ std r14, 160(%r1)
+ std r15, 152(%r1)
+ std r16, 144(%r1)
+ std r17, 136(%r1)
+ std r18, 128(%r1)
+ std r19, 120(%r1)
+ std r20, 112(%r1)
+ std r21, 104(%r1)
+ std r22, 96(%r1)
+ std r23, 88(%r1)
+ std r24, 80(%r1)
+ std r25, 72(%r1)
+ std r26, 64(%r1)
+ std r27, 56(%r1)
+ std r28, 48(%r1)
+ std r29, 40(%r1)
+ std r30, 32(%r1)
+ std r31, 24(%r1)
+
+ li r3, 0x3030
+ std r3, -96(%r1)
+ li r4, 0x4040
+ std r4, -104(%r1)
+ li r5, 0x5050
+ std r5, -112(%r1)
+ li r6, 0x6060
+ std r6, -120(%r1)
+ li r7, 0x7070
+ std r7, -128(%r1)
+ li r8, 0x0808
+ std r8, -136(%r1)
+ li r9, 0x0909
+ std r9, -144(%r1)
+ li r10, 0x1010
+ std r10, -152(%r1)
+ li r11, 0x1111
+ std r11, -160(%r1)
+ li r14, 0x1414
+ std r14, -168(%r1)
+ li r15, 0x1515
+ std r15, -176(%r1)
+ li r16, 0x1616
+ std r16, -184(%r1)
+ li r17, 0x1717
+ std r17, -192(%r1)
+ li r18, 0x1818
+ std r18, -200(%r1)
+ li r19, 0x1919
+ std r19, -208(%r1)
+ li r20, 0x2020
+ std r20, -216(%r1)
+ li r21, 0x2121
+ std r21, -224(%r1)
+ li r22, 0x2222
+ std r22, -232(%r1)
+ li r23, 0x2323
+ std r23, -240(%r1)
+ li r24, 0x2424
+ std r24, -248(%r1)
+ li r25, 0x2525
+ std r25, -256(%r1)
+ li r26, 0x2626
+ std r26, -264(%r1)
+ li r27, 0x2727
+ std r27, -272(%r1)
+ li r28, 0x2828
+ std r28, -280(%r1)
+ li r29, 0x2929
+ std r29, -288(%r1)
+ li r30, 0x3030
+ li r31, 0x3131
+
+ li r3, 0
+0: addi r3, r3, 1
+ cmpwi r3, 100
+ blt 0b
+
+ /* Return 1 (fail) unless we get through all the checks */
+ li r3, 1
+
+ /* Check none of our registers have been corrupted */
+ cmpwi r4, 0x4040
+ bne 1f
+ cmpwi r5, 0x5050
+ bne 1f
+ cmpwi r6, 0x6060
+ bne 1f
+ cmpwi r7, 0x7070
+ bne 1f
+ cmpwi r8, 0x0808
+ bne 1f
+ cmpwi r9, 0x0909
+ bne 1f
+ cmpwi r10, 0x1010
+ bne 1f
+ cmpwi r11, 0x1111
+ bne 1f
+ cmpwi r14, 0x1414
+ bne 1f
+ cmpwi r15, 0x1515
+ bne 1f
+ cmpwi r16, 0x1616
+ bne 1f
+ cmpwi r17, 0x1717
+ bne 1f
+ cmpwi r18, 0x1818
+ bne 1f
+ cmpwi r19, 0x1919
+ bne 1f
+ cmpwi r20, 0x2020
+ bne 1f
+ cmpwi r21, 0x2121
+ bne 1f
+ cmpwi r22, 0x2222
+ bne 1f
+ cmpwi r23, 0x2323
+ bne 1f
+ cmpwi r24, 0x2424
+ bne 1f
+ cmpwi r25, 0x2525
+ bne 1f
+ cmpwi r26, 0x2626
+ bne 1f
+ cmpwi r27, 0x2727
+ bne 1f
+ cmpwi r28, 0x2828
+ bne 1f
+ cmpwi r29, 0x2929
+ bne 1f
+ cmpwi r30, 0x3030
+ bne 1f
+ cmpwi r31, 0x3131
+ bne 1f
+
+ /* Load junk into all our registers before we reload them from the stack. */
+ li r3, 0xde
+ li r4, 0xad
+ li r5, 0xbe
+ li r6, 0xef
+ li r7, 0xde
+ li r8, 0xad
+ li r9, 0xbe
+ li r10, 0xef
+ li r11, 0xde
+ li r14, 0xad
+ li r15, 0xbe
+ li r16, 0xef
+ li r17, 0xde
+ li r18, 0xad
+ li r19, 0xbe
+ li r20, 0xef
+ li r21, 0xde
+ li r22, 0xad
+ li r23, 0xbe
+ li r24, 0xef
+ li r25, 0xde
+ li r26, 0xad
+ li r27, 0xbe
+ li r28, 0xef
+ li r29, 0xdd
+
+ ld r3, -96(%r1)
+ cmpwi r3, 0x3030
+ bne 1f
+ ld r4, -104(%r1)
+ cmpwi r4, 0x4040
+ bne 1f
+ ld r5, -112(%r1)
+ cmpwi r5, 0x5050
+ bne 1f
+ ld r6, -120(%r1)
+ cmpwi r6, 0x6060
+ bne 1f
+ ld r7, -128(%r1)
+ cmpwi r7, 0x7070
+ bne 1f
+ ld r8, -136(%r1)
+ cmpwi r8, 0x0808
+ bne 1f
+ ld r9, -144(%r1)
+ cmpwi r9, 0x0909
+ bne 1f
+ ld r10, -152(%r1)
+ cmpwi r10, 0x1010
+ bne 1f
+ ld r11, -160(%r1)
+ cmpwi r11, 0x1111
+ bne 1f
+ ld r14, -168(%r1)
+ cmpwi r14, 0x1414
+ bne 1f
+ ld r15, -176(%r1)
+ cmpwi r15, 0x1515
+ bne 1f
+ ld r16, -184(%r1)
+ cmpwi r16, 0x1616
+ bne 1f
+ ld r17, -192(%r1)
+ cmpwi r17, 0x1717
+ bne 1f
+ ld r18, -200(%r1)
+ cmpwi r18, 0x1818
+ bne 1f
+ ld r19, -208(%r1)
+ cmpwi r19, 0x1919
+ bne 1f
+ ld r20, -216(%r1)
+ cmpwi r20, 0x2020
+ bne 1f
+ ld r21, -224(%r1)
+ cmpwi r21, 0x2121
+ bne 1f
+ ld r22, -232(%r1)
+ cmpwi r22, 0x2222
+ bne 1f
+ ld r23, -240(%r1)
+ cmpwi r23, 0x2323
+ bne 1f
+ ld r24, -248(%r1)
+ cmpwi r24, 0x2424
+ bne 1f
+ ld r25, -256(%r1)
+ cmpwi r25, 0x2525
+ bne 1f
+ ld r26, -264(%r1)
+ cmpwi r26, 0x2626
+ bne 1f
+ ld r27, -272(%r1)
+ cmpwi r27, 0x2727
+ bne 1f
+ ld r28, -280(%r1)
+ cmpwi r28, 0x2828
+ bne 1f
+ ld r29, -288(%r1)
+ cmpwi r29, 0x2929
+ bne 1f
+
+ /* Load 0 (success) to return */
+ li r3, 0
+
+1: ld r14, 160(%r1)
+ ld r15, 152(%r1)
+ ld r16, 144(%r1)
+ ld r17, 136(%r1)
+ ld r18, 128(%r1)
+ ld r19, 120(%r1)
+ ld r20, 112(%r1)
+ ld r21, 104(%r1)
+ ld r22, 96(%r1)
+ ld r23, 88(%r1)
+ ld r24, 80(%r1)
+ ld r25, 72(%r1)
+ ld r26, 64(%r1)
+ ld r27, 56(%r1)
+ ld r28, 48(%r1)
+ ld r29, 40(%r1)
+ ld r30, 32(%r1)
+ ld r31, 24(%r1)
+ addi %r1, %r1, 168
+ blr
Code Review / kvmfornfv.git / blobdiff