diff mbox series

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

Message ID 20191126052141.28009-10-jniethe5@gmail.com (mailing list archive)
State Superseded
Headers show
Series Initial Prefixed Instruction support | expand

Checks

Context Check Description
snowpatch_ozlabs/apply_patch success Successfully applied on branch powerpc/merge (2ec2260ce7bce5eb6a8ced0bb78d75c1b3eca306)
snowpatch_ozlabs/checkpatch success total: 0 errors, 0 warnings, 0 checks, 10 lines checked
snowpatch_ozlabs/needsstable success Patch has no Fixes tags

Commit Message

Jordan Niethe Nov. 26, 2019, 5:21 a.m. UTC 
This adds emulation support for the following prefixed Fixed-Point
Arithmetic instructions:
  * Prefixed Add Immediate (paddi)

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

Patch

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;