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#![feature(test)]
extern crate test;
extern crate yaxpeax_x86;
use std::ffi::c_void;
use std::io::Write;
use test::Bencher;
use yaxpeax_x86::{Instruction, Opcode, decode_one};
fn decode(bytes: &[u8]) -> Option<Instruction> {
let mut instr = Instruction::invalid();
match decode_one(bytes.iter().map(|x| *x), &mut instr) {
Some(()) => Some(instr),
None => None
}
}
#[bench]
fn bench_102000_instrs(b: &mut Bencher) {
b.iter(|| {
for i in (0..3000) {
test::black_box(do_decode_swathe());
}
})
}
#[cfg(feature = "capstone_bench")]
#[bench]
fn bench_102000_intrs_capstone(b: &mut Bencher) {
let handle = get_cs_handle();
// panic!("Allocating..");
let mut instr: *mut c_void = unsafe { cs_malloc(handle) };
// panic!("Allocated...");
b.iter(|| {
for i in (0..3000) {
test::black_box(do_capstone_decode_swathe(handle, instr));
}
})
}
const decode_data: [u8; 130] = [
0x48, 0xc7, 0x04, 0x24, 0x00, 0x00, 0x00, 0x00,
0x48, 0x89, 0x44, 0x24, 0x08,
0x48, 0x89, 0x43, 0x18,
0x48, 0xc7, 0x43, 0x10, 0x00, 0x00, 0x00, 0x00,
0x49, 0x89, 0x4e, 0x08,
0x48, 0x8b, 0x32,
0x49, 0x89, 0x46, 0x10,
0x4d, 0x0f, 0x43, 0xec, 0x49,
0x0f, 0xb6, 0x06,
0x0f, 0xb7, 0x06,
0x66, 0x41, 0x50,
0x66, 0x41, 0x31, 0xc0,
0x66, 0x41, 0x32, 0xc0,
0x40, 0x32, 0xc5,
0x73, 0x31,
0x72, 0x5a,
0x0f, 0x86, 0x8b, 0x01, 0x00, 0x00,
0x74, 0x47,
0xff, 0x15, 0x7e, 0x72, 0x24, 0x00,
0xc3,
0x48, 0x3d, 0x01, 0xf0, 0xff, 0xff,
0x3d, 0x01, 0xf0, 0xff, 0xff,
0x48, 0x83, 0xf8, 0xff,
0x48, 0x39, 0xc6,
0x48, 0x8d, 0xa4, 0xc7, 0x20, 0x00, 0x00, 0x12,
0x33, 0xc0,
0x48, 0x8d, 0x53, 0x08,
0x31, 0xc9,
0x48, 0x29, 0xc8,
0x48, 0x03, 0x0b,
0x5b,
0x41, 0x5e,
0x48, 0x8d, 0x0c, 0x12,
0xf6, 0xc2, 0x18
];
fn do_decode_swathe() {
let mut buf = [0u8; 128];
let mut iter = decode_data.iter().map(|x| *x);
let mut result = yaxpeax_x86::Instruction::invalid();
loop {
match yaxpeax_x86::decode_one(&mut iter, &mut result) {
Some(_) => {
#[cfg(feature = "capstone_bench")]
test::black_box(write!(&mut buf[..], "{}", result));
test::black_box(&result);
},
None => {
println!("done.");
break;
}
}
}
}
#[cfg(feature = "capstone_bench")]
extern "C" {
pub fn cs_open(arch: u32, mode: u32, handle: *mut usize) -> usize;
}
#[cfg(feature = "capstone_bench")]
extern "C" {
pub fn cs_malloc(handle: usize) -> *mut c_void;
}
#[cfg(feature = "capstone_bench")]
extern "C" {
pub fn cs_disasm_iter(
arch: usize,
code: *mut *const u8,
size: *mut usize,
address: *mut u64,
insn: *mut c_void
) -> bool;
}
#[cfg(feature = "capstone_bench")]
fn get_cs_handle() -> usize {
let mut handle: usize = 0;
let res = unsafe { cs_open(3, 4, &mut handle as *mut usize) };
handle
}
#[cfg(feature = "capstone_bench")]
fn get_instr(handle: usize) -> *mut c_void {
unsafe { cs_malloc(handle) as *mut c_void }
}
#[cfg(feature = "capstone_bench")]
fn do_capstone_decode_swathe(cs: usize, instr: *mut c_void) {
unsafe {
let mut code = &decode_data as *const u8;
let mut len = decode_data.len();
let mut addr = 0u64;
loop {
let result = cs_disasm_iter(
cs,
&mut code as *mut *const u8,
&mut len as *mut usize,
&mut addr as *mut u64,
instr
);
//panic!("at least one succeeded");
if result == false {
return;
}
}
}
}
//#[bench]
//#[ignore]
// VEX prefixes are not supported at the moment, in any form
//fn test_avx() {
// assert_eq!(&format!("{}", decode(
// &[0xc5, 0xf8, 0x10, 0x00]
// ).unwrap()), "vmovups xmm0, xmmword [rax]");
//}
|
