[PATCH 09/18] powerpc sstep: Add support for prefixed fixed-point arithmetic

[Jordan Niethe]

This adds emulation support for the following prefixed Fixed-Point
Arithmetic instructions:
  * Prefixed Add Immediate (paddi)

Signed-off-by: Jordan Niethe <jniethe5 at gmail.com>
---
 arch/powerpc/lib/sstep.c | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/arch/powerpc/lib/sstep.c b/arch/powerpc/lib/sstep.c
index 9ae8d177b67f..1bb0c79cb774 100644
--- a/arch/powerpc/lib/sstep.c
+++ b/arch/powerpc/lib/sstep.c
@@ -2776,6 +2776,10 @@ int analyse_instr(struct instruction_op *op, const struct pt_regs *regs,
 				break;
 			op->ea = mlsd_8lsd_ea(instr, sufx, regs);
 			switch (sufxopcode) {
+			case 14:	/* paddi */
+				op->type = COMPUTE | PREFIXED;
+				op->val = op->ea;
+				goto compute_done;
 			case 32:	/* plwz */
 				op->type = MKOP(LOAD, PREFIXED, 4);
 				break;
-- 
2.20.1