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feat: 添加逻辑字节码与跳转指令辅助函数

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彭俊皓
2026-06-06 12:14:37 +08:00
parent 5bb50aeda9
commit 47d5ebb78f
1 changed files with 28 additions and 1 deletions
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crates/oxide_compiler/src/opcode.rs
+28 -1
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@@ -25,8 +25,11 @@ pub enum OpCode {
LTE = 0x14,
GTE = 0x15,
IN = 0x16,
NOT = 0x17,
AND = 0x18,
OR = 0x19,
// ── Control Flow (0x20-0x2F) ──
// -- Control Flow (0x20-0x2F) --
JMP = 0x20,
JMP_IF_FALSE = 0x21,
JMP_IF_TRUE = 0x22,
@@ -100,6 +103,9 @@ impl TryFrom<u8> for OpCode {
0x14 => Ok(OpCode::LTE),
0x15 => Ok(OpCode::GTE),
0x16 => Ok(OpCode::IN),
0x17 => Ok(OpCode::NOT),
0x18 => Ok(OpCode::AND),
0x19 => Ok(OpCode::OR),
0x20 => Ok(OpCode::JMP),
0x21 => Ok(OpCode::JMP_IF_FALSE),
0x22 => Ok(OpCode::JMP_IF_TRUE),
@@ -148,6 +154,9 @@ impl fmt::Display for OpCode {
OpCode::LTE => "LTE",
OpCode::GTE => "GTE",
OpCode::IN => "IN",
OpCode::NOT => "NOT",
OpCode::AND => "AND",
OpCode::OR => "OR",
OpCode::JMP => "JMP",
OpCode::JMP_IF_FALSE => "JMP_IF_FALSE",
OpCode::JMP_IF_TRUE => "JMP_IF_TRUE",
@@ -215,3 +224,21 @@ pub fn imm16(instr: Instr) -> u16 {
pub fn offset16(instr: Instr) -> i16 {
((instr >> 16) & 0xFFFF) as i16
}
pub fn encode_jmp(offset: i16) -> Instr {
let lo = (offset as u16 & 0xFF) as u8;
let hi = ((offset as u16 >> 8) & 0xFF) as u8;
encode(OpCode::JMP, 0, lo, hi)
}
pub fn encode_jmp_if_false(rd: u8, offset: i16) -> Instr {
let lo = (offset as u16 & 0xFF) as u8;
let hi = ((offset as u16 >> 8) & 0xFF) as u8;
encode(OpCode::JMP_IF_FALSE, rd, lo, hi)
}
pub fn encode_jmp_if_true(rd: u8, offset: i16) -> Instr {
let lo = (offset as u16 & 0xFF) as u8;
let hi = ((offset as u16 >> 8) & 0xFF) as u8;
encode(OpCode::JMP_IF_TRUE, rd, lo, hi)
}