powerpc: Make single-stepping emulation (mostly) usable on 32-bit

The sc instruction emulation can't be done the same way on 32-bit
as 64-bit yet, but this should work OK.

Signed-off-by: Paul Mackerras <paulus@samba.org>

1 files changed, 8 insertions, 0 deletions

diff --git a/include/asm-powerpc/reg.h b/include/asm-powerpc/reg.h
index 68058d72d8da..bfb45a4523d3 100644
--- a/include/asm-powerpc/reg.h
+++ b/include/asm-powerpc/reg.h
@@ -51,9 +51,17 @@
 #define __MASK(X)       (1UL<<(X))
 #endif
 
+#ifdef CONFIG_PPC64
 #define MSR_SF          __MASK(MSR_SF_LG)       /* Enable 64 bit mode */
 #define MSR_ISF         __MASK(MSR_ISF_LG)      /* Interrupt 64b mode valid on 630 */
 #define MSR_HV          __MASK(MSR_HV_LG)       /* Hypervisor state */
+#else
+/* so tests for these bits fail on 32-bit */
+#define MSR_SF          0
+#define MSR_ISF         0
+#define MSR_HV          0
+#endif
+
 #define MSR_VEC         __MASK(MSR_VEC_LG)      /* Enable AltiVec */
 #define MSR_POW         __MASK(MSR_POW_LG)      /* Enable Power Management */
 #define MSR_WE          __MASK(MSR_WE_LG)       /* Wait State Enable */