From b7c5055d42223357a2ce7dd4a841deecec062276 Mon Sep 17 00:00:00 2001 From: Lioncash Date: Mon, 22 Jan 2018 10:54:48 -0500 Subject: [PATCH] A64: Implement CLZ --- src/frontend/A64/decoder/a64.inc | 2 +- .../A64/translate/impl/data_processing_register.cpp | 10 ++++++++++ 2 files changed, 11 insertions(+), 1 deletion(-) diff --git a/src/frontend/A64/decoder/a64.inc b/src/frontend/A64/decoder/a64.inc index fceda5a0..c21dbfe2 100644 --- a/src/frontend/A64/decoder/a64.inc +++ b/src/frontend/A64/decoder/a64.inc @@ -288,7 +288,7 @@ INST(RORV, "RORV", "z0011 //INST(RBIT_int, "RBIT", "z101101011000000000000nnnnnddddd") INST(REV16_int, "REV16", "z101101011000000000001nnnnnddddd") INST(REV, "REV", "z10110101100000000001onnnnnddddd") -//INST(CLZ_int, "CLZ", "z101101011000000000100nnnnnddddd") +INST(CLZ_int, "CLZ", "z101101011000000000100nnnnnddddd") //INST(CLS_int, "CLS", "z101101011000000000101nnnnnddddd") INST(REV32_int, "REV32", "1101101011000000000010nnnnnddddd") //INST(PACDA, "PACDA, PACDZA", "110110101100000100Z010nnnnnddddd") diff --git a/src/frontend/A64/translate/impl/data_processing_register.cpp b/src/frontend/A64/translate/impl/data_processing_register.cpp index 01afeabf..f775cd8d 100644 --- a/src/frontend/A64/translate/impl/data_processing_register.cpp +++ b/src/frontend/A64/translate/impl/data_processing_register.cpp @@ -9,6 +9,16 @@ namespace Dynarmic { namespace A64 { +bool TranslatorVisitor::CLZ_int(bool sf, Reg Rn, Reg Rd) { + const size_t datasize = sf ? 64 : 32; + + const IR::U32U64 operand = X(datasize, Rn); + const IR::U32U64 result = ir.CountLeadingZeros(operand); + + X(datasize, Rd, result); + return true; +} + bool TranslatorVisitor::REV(bool sf, bool opc_0, Reg Rn, Reg Rd) { const size_t datasize = sf ? 64 : 32;