From f00789e6f7c208fbaf1d19c266e88b57522f0d6d Mon Sep 17 00:00:00 2001
From: Lioncash <mathew1800@gmail.com>
Date: Tue, 8 May 2018 16:33:28 -0400
Subject: [PATCH] A64: Implement SABD
---
src/frontend/A64/decoder/a64.inc | 2 +-
.../A64/translate/impl/simd_three_same.cpp | 16 ++++++++++++++++
2 files changed, 17 insertions(+), 1 deletion(-)
diff --git a/src/frontend/A64/decoder/a64.inc b/src/frontend/A64/decoder/a64.inc
index 9ea147e2..cddf2e03 100644
--- a/src/frontend/A64/decoder/a64.inc
+++ b/src/frontend/A64/decoder/a64.inc
@@ -714,7 +714,7 @@ INST(SSHL_2, "SSHL", "0Q001
//INST(SQRSHL_2, "SQRSHL", "0Q001110zz1mmmmm010111nnnnnddddd")
INST(SMAX, "SMAX", "0Q001110zz1mmmmm011001nnnnnddddd")
INST(SMIN, "SMIN", "0Q001110zz1mmmmm011011nnnnnddddd")
-//INST(SABD, "SABD", "0Q001110zz1mmmmm011101nnnnnddddd")
+INST(SABD, "SABD", "0Q001110zz1mmmmm011101nnnnnddddd")
//INST(SABA, "SABA", "0Q001110zz1mmmmm011111nnnnnddddd")
INST(ADD_vector, "ADD (vector)", "0Q001110zz1mmmmm100001nnnnnddddd")
INST(CMTST_2, "CMTST", "0Q001110zz1mmmmm100011nnnnnddddd")
diff --git a/src/frontend/A64/translate/impl/simd_three_same.cpp b/src/frontend/A64/translate/impl/simd_three_same.cpp
index c5001da0..d9a82dba 100644
--- a/src/frontend/A64/translate/impl/simd_three_same.cpp
+++ b/src/frontend/A64/translate/impl/simd_three_same.cpp
@@ -73,6 +73,22 @@ bool TranslatorVisitor::CMGE_reg_2(bool Q, Imm<2> size, Vec Vm, Vec Vn, Vec Vd)
return true;
}
+bool TranslatorVisitor::SABD(bool Q, Imm<2> size, Vec Vm, Vec Vn, Vec Vd) {
+ if (size == 0b11) {
+ return ReservedValue();
+ }
+
+ const size_t datasize = Q ? 128 : 64;
+ const size_t esize = 8 << size.ZeroExtend();
+
+ const IR::U128 operand1 = V(datasize, Vn);
+ const IR::U128 operand2 = V(datasize, Vm);
+ const IR::U128 result = ir.VectorSignedAbsoluteDifference(esize, operand1, operand2);
+
+ V(datasize, Vd, result);
+ return true;
+}
+
bool TranslatorVisitor::SMAX(bool Q, Imm<2> size, Vec Vm, Vec Vn, Vec Vd) {
if (size == 0b11) {
return ReservedValue();