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fixed infinite loop when not branching

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This commit is contained in:
inixyz
2023-10-18 00:22:17 +03:00
parent b79efd608a
commit c47cf4cf01
7 changed files with 56 additions and 31 deletions
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14
src/tinyriscv.h
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@@ -45,15 +45,13 @@ static inline void store32(u8* mem, const u32 addr, const u32 val){
void tinyriscv_b_type(u32* pc, const u8 func3, const u32 x[32], const u8 rs1,
const u8 rs2, const i16 imm){
*pc -= 4;
switch(func3){
case /*BEQ*/ 0: if(x[rs1] == x[rs2]) *pc += (i32)imm; break;
case /*BNE*/ 1: if(x[rs1] != x[rs2]) *pc += (i32)imm; break;
case /*BLT*/ 4: if((i32)x[rs1] < (i32)x[rs2]) *pc += (i32)imm; break;
case /*BGE*/ 5: if((i32)x[rs1] >= (i32)x[rs2]) *pc += (i32)imm; break;
case /*BLTU*/ 6: if(x[rs1] < x[rs2]) *pc += (i32)imm; break;
case /*BGEU*/ 7: if(x[rs1] >= x[rs2]) *pc += (i32)imm; break;
case /*BEQ*/ 0: if(x[rs1] == x[rs2]) *pc += (i32)imm - 4; break;
case /*BNE*/ 1: if(x[rs1] != x[rs2]) *pc += (i32)imm - 4; break;
case /*BLT*/ 4: if((i32)x[rs1] < (i32)x[rs2]) *pc += (i32)imm - 4; break;
case /*BGE*/ 5: if((i32)x[rs1] >= (i32)x[rs2]) *pc += (i32)imm - 4; break;
case /*BLTU*/ 6: if(x[rs1] < x[rs2]) *pc += (i32)imm - 4; break;
case /*BGEU*/ 7: if(x[rs1] >= x[rs2]) *pc += (i32)imm - 4; break;
}
}