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Implement AUIPC

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taitep
2025-12-21 19:01:02 +01:00
parent 5c132b55e9
commit 2e1c0a7dce
2 changed files with 7 additions and 0 deletions
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1
src/instructions.rs
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@@ -48,6 +48,7 @@ pub(crate) fn find_and_exec(instr: Instruction, core: &mut Core) -> Option<Instr
}, },
0b01101 => Some(rvi::lui(core, instr)), 0b01101 => Some(rvi::lui(core, instr)),
0b11011 => Some(rvi::jal(core, instr)), 0b11011 => Some(rvi::jal(core, instr)),
0b00101 => Some(rvi::auipc(core, instr)),
_ => None, _ => None,
} }
} }

6
src/instructions/rvi.rs
View File

@@ -123,6 +123,12 @@ pub fn jal(core: &mut Core, instr: Instruction) -> InstructionResult {
InstructionResult::Normal InstructionResult::Normal
} }
pub fn auipc(core: &mut Core, instr: Instruction) -> InstructionResult {
core.reg_write(instr.rd(), core.pc.wrapping_add(instr.imm_u()));
core.advance_pc();
InstructionResult::Normal
}
pub fn beq(core: &mut Core, instr: Instruction) -> InstructionResult { pub fn beq(core: &mut Core, instr: Instruction) -> InstructionResult {
if core.reg_read(instr.rs1()) == core.reg_read(instr.rs2()) { if core.reg_read(instr.rs1()) == core.reg_read(instr.rs2()) {
core.pc = core.pc.wrapping_add(instr.imm_b()); core.pc = core.pc.wrapping_add(instr.imm_b());