From 4b2a340bc72293f9bb6b9c9093759ab6ec0710cb Mon Sep 17 00:00:00 2001
From: xctan <xctan@cirno.icu>
Date: Thu, 16 Mar 2023 22:29:07 +0800
Subject: [RV64_DYNAREC] Added 98 CWDE opcode (#574)

* [RV64_DYNAREC] Added 98 CWDE opcode

* [RV64_DYNAREC] Added 90 XCHG opcode
---
 src/dynarec/rv64/dynarec_rv64_00.c | 31 +++++++++++++++++++++++++++++++
 1 file changed, 31 insertions(+)

(limited to 'src')

diff --git a/src/dynarec/rv64/dynarec_rv64_00.c b/src/dynarec/rv64/dynarec_rv64_00.c
index 72c10f90..bcd59c0b 100644
--- a/src/dynarec/rv64/dynarec_rv64_00.c
+++ b/src/dynarec/rv64/dynarec_rv64_00.c
@@ -266,6 +266,37 @@ uintptr_t dynarec64_00(dynarec_rv64_t* dyn, uintptr_t addr, uintptr_t ip, int ni
                 }
             }
             break;
+
+        case 0x90:
+        case 0x91:
+        case 0x92:
+        case 0x93:
+        case 0x94:
+        case 0x95:
+        case 0x96:
+        case 0x97:
+            gd = xRAX+(opcode&0x07)+(rex.b<<3);
+            if(gd==xRAX) {
+                INST_NAME("NOP");
+            } else {
+                INST_NAME("XCHG EAX, Reg");
+                MVxw(x2, xRAX);
+                MVxw(xRAX, gd);
+                MVxw(gd, x2);
+            }
+            break;
+        case 0x98:
+            INST_NAME("CWDE");
+            if(rex.w) {
+                SEXT_W(xRAX, xRAX);
+            } else {
+                SLLI(xRAX, xRAX, 16);
+                SRAIW(xRAX, xRAX, 16);
+                ZEROUP(xRAX);
+            }
+            break;
+
+
         case 0xB8:
         case 0xB9:
         case 0xBA:
-- 
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