88 lines
1.9 KiB
Plaintext
88 lines
1.9 KiB
Plaintext
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# MIPS32 诊断测试脚本
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# 用于排查 ADD 指令不工作的问题
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echo "========================================"
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echo " MIPS32 ADD 指令诊断测试"
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echo "========================================"
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echo ""
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# 创建机器并加载平台
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echo "【步骤 1】创建机器和加载平台"
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mach create "MIPS-Diagnostic"
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machine LoadPlatformDescription @platforms/cpus/mips32_simple.repl
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# 显示CPU类型
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echo "【步骤 2】验证 CPU 类型"
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sysbus.cpu
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# 设置初始状态
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echo ""
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echo "【步骤 3】设置初始状态"
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cpu PC 0x80000000
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cpu A0 5
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cpu A1 3
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cpu V0 0
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# 显示设置后的寄存器
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echo ""
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echo "【步骤 4】验证初始寄存器值"
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echo " PC ="
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cpu PC
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echo " A0 ="
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cpu A0
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echo " A1 ="
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cpu A1
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echo " V0 ="
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cpu V0
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# 写入 ADD 指令：add $v0, $a0, $a1
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echo ""
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echo "【步骤 5】写入 ADD 指令到内存"
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echo " 地址: 0x80000000"
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echo " 指令: 0x00851020 (add v0, a0, a1)"
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sysbus WriteDoubleWord 0x80000000 0x00851020
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# 验证指令已写入
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echo ""
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echo "【步骤 6】验证指令已写入内存"
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echo " 读取 0x80000000 ="
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sysbus ReadDoubleWord 0x80000000
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# 执行一条指令
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echo ""
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echo "【步骤 7】执行一条指令"
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cpu Step 1
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# 显示执行后的状态
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echo ""
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echo "【步骤 8】检查执行后的寄存器"
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echo " PC ="
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cpu PC
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echo " (预期: 0x80000004)"
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echo ""
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echo " A0 ="
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cpu A0
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echo " (预期: 0x5)"
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echo ""
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echo " A1 ="
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cpu A1
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echo " (预期: 0x3)"
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echo ""
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echo " V0 ="
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cpu V0
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echo " (预期: 0x8 = 5 + 3)"
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echo ""
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echo "========================================"
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echo " 诊断结果分析"
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echo "========================================"
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echo "如果 V0 = 0x8 且 PC = 0x80000004:"
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echo " ✓ ADD 指令工作正常"
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echo ""
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echo "如果 V0 = 0x0:"
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echo " ✗ ADD 指令未执行或寄存器未更新"
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echo ""
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echo "如果 PC = 0x80000000:"
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echo " ✗ CPU 没有前进（指令未执行）"
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echo "========================================"
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