FISTTP addition needed for long double FPU code

joncampbell123 · Sep 1, 2021 · aba4ea0 · aba4ea0
1 parent 2689ff9
commit aba4ea0
Showing 1 changed file with 18 additions and 0 deletions.
diff --git a/src/fpu/fpu_instructions_longdouble.h b/src/fpu/fpu_instructions_longdouble.h
@@ -231,6 +231,24 @@ static void FPU_FST_I64(PhysPt addr) {
 	mem_writeq(addr,(uint64_t)static_cast<int64_t>(FROUND(fpu.regs_80[TOP].v)));
 }
 
+// WARNING: UNTESTED. Original contributed code only focused on the x86 FPU case.
+static void FPU_FSTT_I16(PhysPt addr) {
+	mem_writew(addr,(uint16_t)static_cast<int16_t>(fpu.regs_80[TOP].v));
+	FPU_FPOP();
+}
+
+// WARNING: UNTESTED. Original contributed code only focused on the x86 FPU case.
+static void FPU_FSTT_I32(PhysPt addr) {
+	mem_writed(addr,(uint32_t)static_cast<int32_t>(fpu.regs_80[TOP].v));
+	FPU_FPOP();
+}
+
+// WARNING: UNTESTED. Original contributed code only focused on the x86 FPU case.
+static void FPU_FSTT_I64(PhysPt addr) {
+	mem_writeq(addr,(uint64_t)static_cast<int64_t>(fpu.regs_80[TOP].v));
+	FPU_FPOP();
+}
+
 static void FPU_FBST(PhysPt addr) {
 	FPU_Reg_80 val = fpu.regs_80[TOP];
 	bool sign = false;