sas2026/tinyriscv
3
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

fence / fence.i

Browse Source
This commit is contained in:
inixyz
2023-10-25 14:49:02 +03:00
parent 43d5e8dbfc
commit 3f4f268d1f
1 changed files with 5 additions and 16 deletions
Download Patch File Download Diff File Expand all files Collapse all files

17
src/tinyriscv.h
View File

@@ -148,43 +148,32 @@ void tinyriscv_step(tinyriscv_core* core){
core->x[0] = 0;
switch(opcode){
case /*LUI*/ 0x37:
core->x[rd] = inst & 0xfffff000;
break;
case /*LUI*/ 0x37: core->x[rd] = inst & 0xfffff000; break;
case /*AUIPC*/ 0x17:
core->x[rd] = core->pc - 4 + (inst & 0xfffff000);
break;
case /*JAL*/ 0x6f:
core->x[rd] = core->pc; core->pc += imm_j - 4;
break;
case /*JAL*/ 0x6f: core->x[rd] = core->pc; core->pc += imm_j - 4; break;
case /*JALR*/ 0x67:
const u32 ret_addr = core->pc;
core->pc = (core->x[rs1] + (i32)imm_i) & 0xfffffffe;
core->x[rd] = ret_addr;
break;
case /*B-type*/ 0x63:
tinyriscv_B_type(funct3, core->x, &core->pc, rs1, rs2, imm_b);
break;
case /*L-type*/ 0x03:
tinyriscv_L_type(funct3, core->x, core->mem, rd, rs1, imm_i);
break;
case /*S-type*/ 0x23:
tinyriscv_S_type(funct3, core->x, core->mem, rs1, rs2, imm_s);
break;
case /*I-type*/ 0x13:
tinyriscv_I_type(funct3, funct7, core->x, rd, rs1, imm_i, rs2);
break;
case /*R-type*/ 0x33:
tinyriscv_R_type(funct3, funct7, core->x, rd, rs1, rs2);
break;
case /*FENCE*/ 0x0f: break;
}
}