60 lines
1.1 KiB
C
60 lines
1.1 KiB
C
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#include "io.h"
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int main(void)
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{
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long long rt, rs;
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long long achi, acli;
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long long acho, aclo;
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long long resh, resl;
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achi = 0x1;
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acli = 0x8;
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rs = 0x0000000100000001;
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rt = 0x0000000200000002;
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resh = 0x1;
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resl = 0x4;
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__asm
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("mthi %2, $ac1 \t\n"
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"mtlo %3, $ac1 \t\n"
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"dmsub $ac1, %4, %5\t\n"
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"mfhi %0, $ac1 \t\n"
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"mflo %1, $ac1 \t\n"
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: "=r"(acho), "=r"(aclo)
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: "r"(achi), "r"(acli), "r"(rs), "r"(rt)
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);
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if ((acho != resh) || (aclo != resl)) {
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printf("1 dmsub error\n");
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return -1;
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}
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achi = 0xfffffffF;
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acli = 0xfffffffF;
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rs = 0x8888999977776666;
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rt = 0x9999888877776666;
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resh = 0xffffffffffffffff;
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resl = 0x789aae13;
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__asm
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("mthi %2, $ac1 \t\n"
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"mtlo %3, $ac1 \t\n"
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"dmsub $ac1, %4, %5\t\n"
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"mfhi %0, $ac1 \t\n"
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"mflo %1, $ac1 \t\n"
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: "=r"(acho), "=r"(aclo)
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: "r"(achi), "r"(acli), "r"(rs), "r"(rt)
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);
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if ((acho != resh) || (aclo != resl)) {
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printf("2 dmsub error\n");
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return -1;
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}
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return 0;
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}
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