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> compile NEMU

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ysyx_22040000 李心杨
Linux calcite 6.6.18 #1-NixOS SMP PREEMPT_DYNAMIC Fri Feb 23 08:25:28 UTC 2024 x86_64 GNU/Linux
 18:37:12  up  22:05,  2 users,  load average: 0.76, 0.54, 0.61
This commit is contained in:
tracer-ysyx 2024-03-05 18:37:12 +08:00 committed by xinyangli
parent 4ca052cb1b
commit 0229b0601d
2 changed files with 16 additions and 2 deletions
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9
flake.nix
View file

@ -61,6 +61,15 @@
gdb gdb
] ++ builtins.attrValues self.packages.${system}; ] ++ builtins.attrValues self.packages.${system};
}; };
devShells.nemu = pkgs.mkShell {
packages = with pkgs; [
clang-tools
];
inputsFrom = [
self.packages.${system}.nemu
];
};
} }
); );
} }

9
nemu/src/isa/riscv32/inst.c
View file

@ -48,6 +48,11 @@ static void decode_operand(Decode *s, int *rd, word_t *src1, word_t *src2, word_
} }
} }
static void do_jump(Decode *s, int rd, int relative_address) {
R(rd) = s->pc + 4;
s->dnpc = s->pc + relative_address;
}
static int decode_exec(Decode *s) { static int decode_exec(Decode *s) {
int rd = 0; int rd = 0;
word_t src1 = 0, src2 = 0, imm = 0; word_t src1 = 0, src2 = 0, imm = 0;
@ -62,8 +67,8 @@ static int decode_exec(Decode *s) {
INSTPAT_START(); INSTPAT_START();
INSTPAT("??????? ????? ????? ??? ????? 01101 11", lui , U, R(rd) = imm); INSTPAT("??????? ????? ????? ??? ????? 01101 11", lui , U, R(rd) = imm);
INSTPAT("??????? ????? ????? ??? ????? 00101 11", auipc , U, R(rd) = s->pc + imm); INSTPAT("??????? ????? ????? ??? ????? 00101 11", auipc , U, R(rd) = s->pc + imm);
// INSTPAT("??????? ????? ????? ??? ????? 11011 11", jal, , J, do {s->dnpc = s->pc + imm; R(rd) = s->pc + 4; } while(0)); // INSTPAT("??????? ????? ????? ??? ????? 11011 11", jal, , J, do_jump(s, rd, imm) );
// INSTPAT("??????? ????? ????? ??? ????? 11001 11", jalr , I, do {s->dnpc = s->pc + src1; R(rd) = s->pc + 4); } while(0); INSTPAT("??????? ????? ????? ??? ????? 11001 11", jalr , I, do_jump(s, rd, imm) );
INSTPAT("??????? ????? ????? 100 ????? 00000 11", lbu , I, R(rd) = Mr(src1 + imm, 1)); INSTPAT("??????? ????? ????? 100 ????? 00000 11", lbu , I, R(rd) = Mr(src1 + imm, 1));
INSTPAT("??????? ????? ????? 000 ????? 01000 11", sb , S, Mw(src1 + imm, 1, src2)); INSTPAT("??????? ????? ????? 000 ????? 01000 11", sb , S, Mw(src1 + imm, 1, src2));
INSTPAT("??????? ????? ????? 000 ????? 00100 11", addi , I, R(rd) = src1 + (sword_t)imm); INSTPAT("??????? ????? ????? 000 ????? 00100 11", addi , I, R(rd) = src1 + (sword_t)imm);