powerpc: Emulate sync instruction variants
Reserved fields of the sync instruction have been used for other
instructions (e.g. lwsync). On processors that do not support variants
of the sync instruction, emulate it by executing a sync to subsume the
effect of the intended instruction.
Signed-off-by: James Yang <James.Yang@freescale.com>
[scottwood@freescale.com: whitespace and subject line fix]
Signed-off-by: Scott Wood <scottwood@freescale.com>
diff --git a/arch/powerpc/include/asm/ppc-opcode.h b/arch/powerpc/include/asm/ppc-opcode.h
index ad5fcf5..442edee 100644
--- a/arch/powerpc/include/asm/ppc-opcode.h
+++ b/arch/powerpc/include/asm/ppc-opcode.h
@@ -143,6 +143,8 @@
#define PPC_INST_LSWX 0x7c00042a
#define PPC_INST_LWARX 0x7c000028
#define PPC_INST_LWSYNC 0x7c2004ac
+#define PPC_INST_SYNC 0x7c0004ac
+#define PPC_INST_SYNC_MASK 0xfc0007fe
#define PPC_INST_LXVD2X 0x7c000698
#define PPC_INST_MCRXR 0x7c000400
#define PPC_INST_MCRXR_MASK 0xfc0007fe