Merge pull request #43 from yamam/fix-mulhi

tmori · web-flow · commit 7e5a3339bfa1 · 2024-07-02T14:36:48.000+09:00
LGTM!
diff --git a/src/cpu/cpu_exec/op_exec_arithm.c b/src/cpu/cpu_exec/op_exec_arithm.c
@@ -600,7 +600,7 @@ int op_exec_mulhi(TargetCoreType *cpu)
 	if (reg2 >= CPU_GREG_NUM) {
 		return -1;
 	}
-	result = op_mulhi(&cpu->reg, imm_data, cpu->reg.r[reg1]);
+	result = op_mulhi(&cpu->reg, imm_data, (sint32)((sint16)cpu->reg.r[reg1]));
 	DBG_PRINT((DBG_EXEC_OP_BUF(), DBG_EXEC_OP_BUF_LEN(), "0x%x: MULHI imm16(%d),r%d(%d) r%d(%d):%d\n", cpu->reg.pc, imm_data, reg1, cpu->reg.r[reg1], reg2, cpu->reg.r[reg2], result));
 
 	cpu->reg.r[reg2] = result;

Original file line number	Diff line number	Diff line change
`@@ -600,7 +600,7 @@ int op_exec_mulhi(TargetCoreType *cpu)`
`600`	`600`	`if (reg2 >= CPU_GREG_NUM) {`
`601`	`601`	`return -1;`
`602`	`602`	`}`
`603`		`- result = op_mulhi(&cpu->reg, imm_data, cpu->reg.r[reg1]);`
	`603`	`+ result = op_mulhi(&cpu->reg, imm_data, (sint32)((sint16)cpu->reg.r[reg1]));`
`604`	`604`	`DBG_PRINT((DBG_EXEC_OP_BUF(), DBG_EXEC_OP_BUF_LEN(), "0x%x: MULHI imm16(%d),r%d(%d) r%d(%d):%d\n", cpu->reg.pc, imm_data, reg1, cpu->reg.r[reg1], reg2, cpu->reg.r[reg2], result));`
`605`	`605`
`606`	`606`	`cpu->reg.r[reg2] = result;`