From 0642d4991993b84955da18c3f2677cc067f06f17 Mon Sep 17 00:00:00 2001 From: MerryMage Date: Sat, 3 Feb 2018 12:58:19 +0000 Subject: [PATCH] A64: Implement SMOV --- src/frontend/A64/decoder/a64.inc | 2 +- src/frontend/A64/translate/impl/simd_copy.cpp | 18 ++++++++++++++++++ 2 files changed, 19 insertions(+), 1 deletion(-) diff --git a/src/frontend/A64/decoder/a64.inc b/src/frontend/A64/decoder/a64.inc index 5612c790..f630bb98 100644 --- a/src/frontend/A64/decoder/a64.inc +++ b/src/frontend/A64/decoder/a64.inc @@ -672,7 +672,7 @@ INST(CMEQ_reg_2, "CMEQ (register)", "0Q101 // Data Processing - FP and SIMD - SIMD Copy INST(DUP_gen, "DUP (general)", "0Q001110000iiiii000011nnnnnddddd") -//INST(SMOV, "SMOV", "0Q001110000iiiii001011nnnnnddddd") +INST(SMOV, "SMOV", "0Q001110000iiiii001011nnnnnddddd") INST(UMOV, "UMOV", "0Q001110000iiiii001111nnnnnddddd") //INST(INS_gen, "INS (general)", "01001110000iiiii000111nnnnnddddd") //INST(INS_elt, "INS (element)", "01101110000iiiii0iiii1nnnnnddddd") diff --git a/src/frontend/A64/translate/impl/simd_copy.cpp b/src/frontend/A64/translate/impl/simd_copy.cpp index b806da00..415e6861 100644 --- a/src/frontend/A64/translate/impl/simd_copy.cpp +++ b/src/frontend/A64/translate/impl/simd_copy.cpp @@ -36,6 +36,24 @@ bool TranslatorVisitor::DUP_gen(bool Q, Imm<5> imm5, Reg Rn, Vec Vd) { return true; } +bool TranslatorVisitor::SMOV(bool Q, Imm<5> imm5, Vec Vn, Reg Rd) { + const size_t size = Common::LowestSetBit(imm5.ZeroExtend()); + if (size == 2 && !Q) return UnallocatedEncoding(); + if (size > 2) return UnallocatedEncoding(); + + const size_t idxdsize = imm5.Bit<4>() ? 128 : 64; + const size_t index = imm5.ZeroExtend() >> (size + 1); + const size_t esize = 8 << size; + const size_t datasize = Q ? 64 : 32; + + const IR::U128 operand = V(idxdsize, Vn); + + const IR::UAny elem = ir.VectorGetElement(esize, operand, index); + X(datasize, Rd, SignExtend(elem, datasize)); + + return true; +} + bool TranslatorVisitor::UMOV(bool Q, Imm<5> imm5, Vec Vn, Reg Rd) { const size_t size = Common::LowestSetBit(imm5.ZeroExtend()); if (size < 3 && Q) return UnallocatedEncoding();