[v2,05/13] powerpc sstep: Add support for prefixed fixed-point arithmetic
diff mbox series

Message ID 20200211053355.21574-6-jniethe5@gmail.com
State New
Headers show
Series
  • Initial Prefixed Instruction support
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snowpatch_ozlabs/needsstable success Patch has no Fixes tags
snowpatch_ozlabs/checkpatch success total: 0 errors, 0 warnings, 0 checks, 10 lines checked
snowpatch_ozlabs/apply_patch success Successfully applied on branch powerpc/merge (a5bc6e124219546a81ce334dc9b16483d55e9abf)

Commit Message

Jordan Niethe Feb. 11, 2020, 5:33 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(+)

Patch
diff mbox series

diff --git a/arch/powerpc/lib/sstep.c b/arch/powerpc/lib/sstep.c
index 0e21c21ff2be..8ba74c10bc03 100644
--- a/arch/powerpc/lib/sstep.c
+++ b/arch/powerpc/lib/sstep.c
@@ -2777,6 +2777,10 @@  int analyse_instr(struct instruction_op *op, const struct pt_regs *regs,
 				break;
 			op->ea = mlsd_8lsd_ea(instr, suffix, regs);
 			switch (suffixopcode) {
+			case 14:	/* paddi */
+				op->type = COMPUTE | PREFIXED;
+				op->val = op->ea;
+				goto compute_done;
 			case 32:	/* plwz */
 				op->type = MKOP(LOAD, PREFIXED, 4);
 				break;