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> compile NEMU

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221220000 张三
Linux zzy 5.15.146.1-microsoft-standard-WSL2 #1 SMP Thu Jan 11 04:09:03 UTC 2024 x86_64 x86_64 x86_64 GNU/Linux
 11:25:16 up  1:39,  1 user,  load average: 0.08, 0.26, 0.36
This commit is contained in:
tracer-ics2023
2024-09-12 11:25:16 +08:00
committed by zzy
parent c2bedb789d
commit 9b345efc41
1 changed files with 1 additions and 1 deletions
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nemu/src/isa/riscv32/inst.c
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@ -120,7 +120,7 @@ static int decode_exec(Decode *s) {
INSTPAT("0000000 00001 00000 000 00000 11100 11", ebreak , N, NEMUTRAP(s->pc, R(10))); // R(10) is $a0
INSTPAT("0000001 ????? ????? 000 ????? 01100 11", mul , R, R(rd) = (sword_t)src1 * (sword_t)src2);
INSTPAT("0000001 ????? ????? 001 ????? 01100 11", mulh , R, R(rd) = ((int64_t)(sword_t) src1 * (int64_t)(word_t) src2) >> 32);
INSTPAT("0000001 ????? ????? 001 ????? 01100 11", mulh , R, R(rd) = ((int64_t)(sword_t) src1 * (int64_t)(sword_t) src2) >> 32);
INSTPAT("0000001 ????? ????? 010 ????? 01100 11", mulhsu , R, R(rd) = ((int64_t)(sword_t) src1 * (uint64_t)src2) >> 32); // never used
INSTPAT("0000001 ????? ????? 011 ????? 01100 11", mulhu , R, R(rd) = ((uint64_t)src1 * (uint64_t)src2) >> 32); // never used
INSTPAT("0000001 ????? ????? 100 ????? 01100 11", div , R, R(rd) = (src1 == INT_MIN && src2 == -1) ? src1 : (src2 ? (sword_t) src1 / (sword_t) src2 : -1));