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// Copyright (c) 2025 taitep
// SPDX-License-Identifier: BSD-2-Clause
//
// This file is part of TRVE (https://gitea.taitep.se/taitep/trve)
// See LICENSE file in the project root for full license text.
#[macro_export]
macro_rules! instr_branch {
($name:ident, $cond:expr) => {
pub fn $name(core: &mut Core, instr: Instruction) -> Result<(), ExceptionType> {
let a = core.reg_read(instr.rs1());
let b = core.reg_read(instr.rs2());
if $cond(a, b) {
core.pc = core.pc.wrapping_add(instr.imm_b());
} else {
core.advance_pc();
}
Ok(())
}
};
}
#[macro_export]
macro_rules! instr_branch_signed {
($name:ident, $cond:expr) => {
instr_branch!($name, |a, b| $cond((a as i64), (b as i64)));
};
}
#[macro_export]
macro_rules! instr_op_r {
($name:ident, $op:expr) => {
pub fn $name(core: &mut Core, instr: Instruction) -> Result<(), ExceptionType> {
let a = core.reg_read(instr.rs1());
let b = core.reg_read(instr.rs2());
let res = $op(a, b);
core.reg_write(instr.rd(), res);
core.advance_pc();
Ok(())
}
};
}
#[macro_export]
macro_rules! instr_op_i {
($name:ident, $op:expr) => {
pub fn $name(core: &mut Core, instr: Instruction) -> Result<(), ExceptionType> {
let a = core.reg_read(instr.rs1());
let b = instr.imm_i();
let res = $op(a, b);
core.reg_write(instr.rd(), res);
core.advance_pc();
Ok(())
}
};
}
#[macro_export]
macro_rules! instr_op {
($name:ident, $name_imm:ident, $op:expr) => {
instr_op_r!($name, $op);
instr_op_i!($name_imm, $op);
};
}
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