[PATCH 08/18] powerpc sstep: Add support for prefixed VSX load/stores
From: Jordan Niethe <hidden>
Date: 2019-11-26 05:40:24
Subsystem:
linux for powerpc (32-bit and 64-bit), the rest · Maintainers:
Madhavan Srinivasan, Linus Torvalds
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 <redacted> --- 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