[PATCH 08/18] powerpc sstep: Add support for prefixed VSX load/stores

[Jordan Niethe]

This adds emulation support for the following prefixed VSX load/stores:
  * Prefixed Load VSX Scalar Doubleword (plxsd)
  * Prefixed Load VSX Scalar Single-Precision (plxssp)
  * Prefixed Load VSX Vector [0|1]  (plxv, plxv0, plxv1)
  * Prefixed Store VSX Scalar Doubleword (pstxsd)
  * Prefixed Store VSX Scalar Single-Precision (pstxssp)
  * Prefixed Store VSX Vector [0|1] (pstxv, pstxv0, pstxv1)

Signed-off-by: Jordan Niethe <jniethe5 at gmail.com>
---
 arch/powerpc/lib/sstep.c | 42 ++++++++++++++++++++++++++++++++++++++++
 1 file changed, 42 insertions(+)

diff --git a/arch/powerpc/lib/sstep.c b/arch/powerpc/lib/sstep.c
index 9113b9a21ae9..9ae8d177b67f 100644
--- a/arch/powerpc/lib/sstep.c
+++ b/arch/powerpc/lib/sstep.c
@@ -2713,6 +2713,48 @@ int analyse_instr(struct instruction_op *op, const struct pt_regs *regs,
 			case 41:	/* plwa */
 				op->type = MKOP(LOAD, PREFIXED | SIGNEXT, 4);
 				break;
+			case 42:        /* plxsd */
+				op->reg = rd + 32;
+				op->type = MKOP(LOAD_VSX, PREFIXED, 8);
+				op->element_size = 8;
+				op->vsx_flags = VSX_CHECK_VEC;
+				break;
+			case 43:	/* plxssp */
+				op->reg = rd + 32;
+				op->type = MKOP(LOAD_VSX, PREFIXED, 4);
+				op->element_size = 8;
+				op->vsx_flags = VSX_FPCONV | VSX_CHECK_VEC;
+				break;
+			case 46:	/* pstxsd */
+				op->reg = rd + 32;
+				op->type = MKOP(STORE_VSX, PREFIXED, 8);
+				op->element_size = 8;
+				op->vsx_flags = VSX_CHECK_VEC;
+				break;
+			case 47:	/* pstxssp */
+				op->reg = rd + 32;
+				op->type = MKOP(STORE_VSX, PREFIXED, 4);
+				op->element_size = 8;
+				op->vsx_flags = VSX_FPCONV | VSX_CHECK_VEC;
+				break;
+			case 51:	/* plxv1 */
+				op->reg += 32;
+
+				/* fallthru */
+			case 50:	/* plxv0 */
+				op->type = MKOP(LOAD_VSX, PREFIXED, 16);
+				op->element_size = 16;
+				op->vsx_flags = VSX_CHECK_VEC;
+				break;
+			case 55:	/* pstxv1 */
+				op->reg = rd + 32;
+
+				/* fallthru */
+			case 54:	/* pstxv0 */
+				op->type = MKOP(STORE_VSX, PREFIXED, 16);
+				op->element_size = 16;
+				op->vsx_flags = VSX_CHECK_VEC;
+				break;
 			case 56:        /* plq */
 				op->type = MKOP(LOAD, PREFIXED, 16);
 				break;
-- 
2.20.1