From f94ceccc8aa8a51f644798686154b29bae63aa74 Mon Sep 17 00:00:00 2001
From: ptitSeb <sebastien.chev@gmail.com>
Date: Mon, 22 Mar 2021 21:16:42 +0100
Subject: [DYNAREC] Added (F2/F3) AE opcode

---
 src/dynarec/dynarec_arm64_00.c | 49 ++++++++++++++++++++++++++++++++++++++++--
 1 file changed, 47 insertions(+), 2 deletions(-)

(limited to 'src')

diff --git a/src/dynarec/dynarec_arm64_00.c b/src/dynarec/dynarec_arm64_00.c
index a4351282..148cbe92 100755
--- a/src/dynarec/dynarec_arm64_00.c
+++ b/src/dynarec/dynarec_arm64_00.c
@@ -992,7 +992,7 @@ uintptr_t dynarec64_00(dynarec_arm_t* dyn, uintptr_t addr, uintptr_t ip, int nin
         case 0xA6:
             switch(rep) {
             case 1:
-                INST_NAME("REPZ CMPSB");
+                INST_NAME("REPNZ CMPSB");
                 SETFLAGS(X_ALL, SF_SET);
                 GETDIR(x3, 1);
                 CBZx_NEXT(xRCX);
@@ -1008,7 +1008,7 @@ uintptr_t dynarec64_00(dynarec_arm_t* dyn, uintptr_t addr, uintptr_t ip, int nin
                 emit_cmp8(dyn, ninst, x1, x2, x3, x4, x5);
                 break;
             case 2:
-                INST_NAME("REPNZ CMPSB");
+                INST_NAME("REPZ CMPSB");
                 SETFLAGS(X_ALL, SF_SET);
                 GETDIR(x3, 1);
                 CBZx_NEXT(xRCX);
@@ -1052,6 +1052,51 @@ uintptr_t dynarec64_00(dynarec_arm_t* dyn, uintptr_t addr, uintptr_t ip, int nin
             emit_test32(dyn, ninst, rex, xRAX, x2, x3, x4);
             break;
 
+        case 0xAE:
+            switch(rep) {
+            case 1:
+                INST_NAME("REPNZ SCASB");
+                SETFLAGS(X_ALL, SF_SET);
+                GETDIR(x3, 1);
+                CBZx_NEXT(xRCX);
+                BFIw(x1, xRAX, 0, 8);
+                MARK;
+                LDRB_U12(x2, xRDI, 0);
+                ADDx_REG(xRDI, xRDI, x3);
+                SUBx_U12(xRCX, xRCX, 1);
+                CMPSw_REG(x1, x2);
+                Bcond(cEQ, 4+4);
+                CBNZx_MARK(xRCX);
+                emit_cmp8(dyn, ninst, x1, x2, x3, x4, x5);
+                break;
+            case 2:
+                INST_NAME("REPZ SCASB");
+                SETFLAGS(X_ALL, SF_SET);
+                GETDIR(x3, 1);
+                CBZx_NEXT(xRCX);
+                BFIw(x1, xRAX, 0, 8);
+                MARK;
+                LDRB_U12(x2, xRDI, 0);
+                ADDx_REG(xRDI, xRDI, x3);
+                SUBx_U12(xRCX, xRCX, 1);
+                CMPSw_REG(x1, x2);
+                Bcond(cNE, 4+4);
+                CBNZx_MARK(xRCX);
+                emit_cmp8(dyn, ninst, x1, x2, x3, x4, x5);
+                break;
+            default:
+                INST_NAME("SCASB");
+                SETFLAGS(X_ALL, SF_SET);
+                GETDIR(x3, 1);
+                BFIw(x1, xRAX, 0, 8);
+                LDRB_U12(x2, xRDI, 0);
+                ADDx_REG(xRDI, xRDI, x3);
+                emit_cmp8(dyn, ninst, x1, x2, x3, x4, x5);
+                break;
+            }
+            break;
+        
+
         case 0xB0:
         case 0xB1:
         case 0xB2:
-- 
cgit 1.4.1