bquarkz
694d6c8be6
Co-authored-by: Nilton Constantino <nilton.constantino@visma.com> Reviewed-on: #3
30 lines
793 B
Rust
30 lines
793 B
Rust
use crate::opcode::OpCode;
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pub fn operand_size(opcode: OpCode) -> usize {
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match opcode {
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OpCode::PushConst => 4,
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OpCode::PushI32 => 4,
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OpCode::PushI64 => 8,
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OpCode::PushF64 => 8,
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OpCode::PushBool => 1,
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OpCode::PopN => 4,
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OpCode::Jmp | OpCode::JmpIfFalse | OpCode::JmpIfTrue => 4,
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OpCode::GetGlobal | OpCode::SetGlobal => 4,
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OpCode::GetLocal | OpCode::SetLocal => 4,
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OpCode::Call => 8, // addr(u32) + args_count(u32)
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OpCode::Syscall => 4,
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_ => 0,
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}
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}
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pub fn is_jump(opcode: OpCode) -> bool {
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match opcode {
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OpCode::Jmp | OpCode::JmpIfFalse | OpCode::JmpIfTrue => true,
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_ => false,
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}
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}
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pub fn has_immediate(opcode: OpCode) -> bool {
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operand_size(opcode) > 0
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}
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