From edb949090cd054012d6366f4a58920ac6cb66aa1 Mon Sep 17 00:00:00 2001
From: OBattler <oubattler@gmail.com>
Date: Fri, 17 Sep 2021 19:29:20 +0200
Subject: [PATCH] Missing 64-bit old recompiler functions.

---
 src/codegen/codegen_ops_x86-64.h | 50 ++++++++++++++++++++++++++++++++
 1 file changed, 50 insertions(+)

diff --git a/src/codegen/codegen_ops_x86-64.h b/src/codegen/codegen_ops_x86-64.h
index 906b07dc6..9f3f844a4 100644
--- a/src/codegen/codegen_ops_x86-64.h
+++ b/src/codegen/codegen_ops_x86-64.h
@@ -4314,6 +4314,56 @@ static inline void FP_LOAD_REG_D(int reg, int *host_reg1, int *host_reg2)
         
         *host_reg1 = REG_EBX;
 }
+static inline int64_t x87_fround16_64(double b)
+{
+        int16_t a, c;
+        
+        switch ((cpu_state.npxc >> 10) & 3)
+        {
+                case 0: /*Nearest*/
+                a = (int16_t)floor(b);
+                c = (int16_t)floor(b + 1.0);
+                if ((b - a) < (c - b))
+                        return (int64_t) a;
+                else if ((b - a) > (c - b))
+                        return (int64_t) c;
+                else
+                        return (a & 1) ? c : a;
+                case 1: /*Down*/
+                return (int64_t)((int16_t)floor(b));
+                case 2: /*Up*/
+                return (int64_t)((int16_t)ceil(b));
+                case 3: /*Chop*/
+                return (int64_t)((int16_t)b);
+        }
+        
+        return 0;
+}
+static inline int64_t x87_fround32_64(double b)
+{
+        int32_t a, c;
+        
+        switch ((cpu_state.npxc >> 10) & 3)
+        {
+                case 0: /*Nearest*/
+                a = (int32_t)floor(b);
+                c = (int32_t)floor(b + 1.0);
+                if ((b - a) < (c - b))
+                        return (int64_t) a;
+                else if ((b - a) > (c - b))
+                        return (int64_t) c;
+                else
+                        return (a & 1) ? c : a;
+                case 1: /*Down*/
+                return (int64_t)((int32_t)floor(b));
+                case 2: /*Up*/
+                return (int64_t)((int32_t)ceil(b));
+                case 3: /*Chop*/
+                return (int64_t)((int32_t)b);
+        }
+        
+        return 0;
+}
 static inline int64_t x87_fround(double b)
 {
         int64_t a, c;