02796fc670
In order to benchmark the encoding code with criterion, the functions and structures must be public. Moving this code to its own module (instead of keeping as a submodule to `inst`), allows `inst` to remain private. This avoids having to expose and document (or ignore documenting) the numerous instruction variants in `inst` while allowing access to the encoding code. This commit changes no functionality.
61 lines
1.3 KiB
Rust
61 lines
1.3 KiB
Rust
//! Contains the encoding machinery for the various x64 instruction formats.
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use crate::{isa::x64, machinst::MachBuffer};
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use std::vec::Vec;
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pub mod evex;
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pub mod rex;
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pub mod vex;
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/// The encoding formats in this module all require a way of placing bytes into
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/// a buffer.
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pub trait ByteSink {
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/// Add 1 byte to the code section.
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fn put1(&mut self, _: u8);
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/// Add 2 bytes to the code section.
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fn put2(&mut self, _: u16);
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/// Add 4 bytes to the code section.
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fn put4(&mut self, _: u32);
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/// Add 8 bytes to the code section.
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fn put8(&mut self, _: u64);
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}
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impl ByteSink for MachBuffer<x64::inst::Inst> {
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fn put1(&mut self, value: u8) {
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self.put1(value)
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}
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fn put2(&mut self, value: u16) {
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self.put2(value)
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}
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fn put4(&mut self, value: u32) {
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self.put4(value)
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}
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fn put8(&mut self, value: u64) {
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self.put8(value)
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}
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}
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/// Provide a convenient implementation for testing.
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impl ByteSink for Vec<u8> {
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fn put1(&mut self, v: u8) {
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self.extend_from_slice(&[v])
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}
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fn put2(&mut self, v: u16) {
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self.extend_from_slice(&v.to_le_bytes())
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}
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fn put4(&mut self, v: u32) {
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self.extend_from_slice(&v.to_le_bytes())
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}
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fn put8(&mut self, v: u64) {
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self.extend_from_slice(&v.to_le_bytes())
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}
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}
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