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exercise_instructions.rs
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exercise_instructions.rs
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#![allow(clippy::arithmetic_side_effects)]
#![cfg(all(feature = "jit", not(target_os = "windows"), target_arch = "x86_64"))]
// Copyright 2020 Solana Maintainers <[email protected]>
//
// Licensed under the Apache License, Version 2.0 <http://www.apache.org/licenses/LICENSE-2.0> or
// the MIT license <http://opensource.org/licenses/MIT>, at your option. This file may not be
// copied, modified, or distributed except according to those terms.
extern crate byteorder;
extern crate libc;
extern crate solana_rbpf;
extern crate test_utils;
extern crate thiserror;
use rand::{rngs::SmallRng, RngCore, SeedableRng};
use solana_rbpf::{
assembler::assemble,
ebpf,
memory_region::MemoryRegion,
program::{BuiltinFunction, BuiltinProgram, FunctionRegistry, SBPFVersion},
static_analysis::Analysis,
verifier::RequisiteVerifier,
vm::{Config, ContextObject, TestContextObject},
};
use std::sync::Arc;
use test_utils::create_vm;
macro_rules! test_interpreter_and_jit {
(register, $function_registry:expr, $location:expr => $syscall_function:expr) => {
$function_registry
.register_function_hashed($location.as_bytes(), $syscall_function)
.unwrap();
};
($executable:expr, $mem:tt, $context_object:expr $(,)?) => {
let expected_instruction_count = $context_object.get_remaining();
#[allow(unused_mut)]
let mut context_object = $context_object;
$executable.verify::<RequisiteVerifier>().unwrap();
let (
instruction_count_interpreter,
interpreter_final_pc,
_tracer_interpreter,
interpreter_result,
interpreter_mem,
) = {
let mut mem = $mem.clone();
let mem_region = MemoryRegion::new_writable(&mut mem, ebpf::MM_INPUT_START);
let mut context_object = context_object.clone();
create_vm!(
vm,
&$executable,
&mut context_object,
stack,
heap,
vec![mem_region],
None
);
let (instruction_count_interpreter, result) = vm.execute_program(&$executable, true);
(
instruction_count_interpreter,
vm.registers[11],
vm.context_object_pointer.clone(),
result.unwrap(),
mem,
)
};
#[cfg(all(feature = "jit", not(target_os = "windows"), target_arch = "x86_64"))]
{
#[allow(unused_mut)]
$executable.jit_compile().unwrap();
let mut mem = $mem;
let mem_region = MemoryRegion::new_writable(&mut mem, ebpf::MM_INPUT_START);
create_vm!(
vm,
&$executable,
&mut context_object,
stack,
heap,
vec![mem_region],
None
);
let (instruction_count_jit, result) = vm.execute_program(&$executable, false);
let tracer_jit = &vm.context_object_pointer;
if !TestContextObject::compare_trace_log(&_tracer_interpreter, tracer_jit) {
let analysis = Analysis::from_executable(&$executable).unwrap();
let stdout = std::io::stdout();
analysis
.disassemble_trace_log(&mut stdout.lock(), &_tracer_interpreter.trace_log)
.unwrap();
analysis
.disassemble_trace_log(&mut stdout.lock(), &tracer_jit.trace_log)
.unwrap();
panic!();
}
assert_eq!(
result.unwrap(),
interpreter_result,
"Unexpected result for JIT"
);
assert_eq!(
instruction_count_interpreter, instruction_count_jit,
"Interpreter and JIT instruction meter diverged",
);
assert_eq!(
interpreter_final_pc, vm.registers[11],
"Interpreter and JIT instruction final PC diverged",
);
assert_eq!(interpreter_mem, mem, "Interpreter and JIT memory diverged",);
}
if $executable.get_config().enable_instruction_meter {
assert_eq!(
instruction_count_interpreter, expected_instruction_count,
"Instruction meter did not consume expected amount"
);
}
};
}
macro_rules! test_interpreter_and_jit_asm {
($source:expr, $config:expr, $mem:tt, ($($location:expr => $syscall_function:expr),* $(,)?), $context_object:expr $(,)?) => {
#[allow(unused_mut)]
{
let mut config = $config;
config.enable_instruction_tracing = true;
let mut function_registry = FunctionRegistry::<BuiltinFunction<TestContextObject>>::default();
$(test_interpreter_and_jit!(register, function_registry, $location => $syscall_function);)*
let loader = Arc::new(BuiltinProgram::new_loader(config, function_registry));
let mut executable = assemble($source, loader).unwrap();
test_interpreter_and_jit!(executable, $mem, $context_object);
}
};
}
// BPF_ALU : Arithmetic and Logic
#[test]
fn fuzz_alu() {
let seed = 0xC2DB2F8F282284A0;
let mut prng = SmallRng::seed_from_u64(seed);
for src in 0..10 {
for dst in 0..10 {
for _ in 0..10 {
test_ins(false, format!("mov64 r{src}, r{dst}"), &mut prng, 21);
test_ins(false, format!("add64 r{src}, r{dst}"), &mut prng, 21);
test_ins(false, format!("sub64 r{src}, r{dst}"), &mut prng, 21);
test_ins(false, format!("or64 r{src}, r{dst}"), &mut prng, 21);
test_ins(false, format!("xor64 r{src}, r{dst}"), &mut prng, 21);
test_ins(false, format!("and64 r{src}, r{dst}"), &mut prng, 21);
test_ins(false, format!("lmul64 r{src}, r{dst}"), &mut prng, 21);
test_ins(false, format!("uhmul64 r{src}, r{dst}"), &mut prng, 21);
test_ins(false, format!("shmul64 r{src}, r{dst}"), &mut prng, 21);
test_ins(false, format!("udiv64 r{src}, r{dst}"), &mut prng, 21);
test_ins(false, format!("urem64 r{src}, r{dst}"), &mut prng, 21);
test_ins(false, format!("srem64 r{src}, r{dst}"), &mut prng, 21);
test_ins(false, format!("sdiv64 r{src}, r{dst}"), &mut prng, 21);
test_ins(false, format!("udiv64 r{src}, r{dst}"), &mut prng, 21);
test_ins(false, format!("lsh64 r{src}, r{dst}"), &mut prng, 21);
test_ins(false, format!("rsh64 r{src}, r{dst}"), &mut prng, 21);
test_ins(false, format!("arsh64 r{src}, r{dst}"), &mut prng, 21);
test_ins(false, format!("mov32 r{src}, r{dst}"), &mut prng, 21);
test_ins(false, format!("add32 r{src}, r{dst}"), &mut prng, 21);
test_ins(false, format!("sub32 r{src}, r{dst}"), &mut prng, 21);
test_ins(false, format!("or32 r{src}, r{dst}"), &mut prng, 21);
test_ins(false, format!("xor32 r{src}, r{dst}"), &mut prng, 21);
test_ins(false, format!("and32 r{src}, r{dst}"), &mut prng, 21);
test_ins(false, format!("lmul32 r{src}, r{dst}"), &mut prng, 21);
// test_ins(format!("uhmul32 r{src}, r{dst}"), &mut p, 21rng);
// test_ins(format!("shmul32 r{src}, r{dst}"), &mut p, 21rng);
test_ins(false, format!("udiv32 r{src}, r{dst}"), &mut prng, 21);
test_ins(false, format!("sdiv32 r{src}, r{dst}"), &mut prng, 21);
test_ins(false, format!("srem32 r{src}, r{dst}"), &mut prng, 21);
test_ins(false, format!("urem32 r{src}, r{dst}"), &mut prng, 21);
test_ins(false, format!("lsh32 r{src}, r{dst}"), &mut prng, 21);
test_ins(false, format!("rsh32 r{src}, r{dst}"), &mut prng, 21);
test_ins(false, format!("arsh32 r{src}, r{dst}"), &mut prng, 21);
test_ins(true, format!("mul64 r{src}, r{dst}"), &mut prng, 21);
test_ins(true, format!("mod64 r{src}, r{dst}"), &mut prng, 21);
test_ins(true, format!("div64 r{src}, r{dst}"), &mut prng, 21);
test_ins(true, format!("mul32 r{src}, r{dst}"), &mut prng, 21);
test_ins(true, format!("mod32 r{src}, r{dst}"), &mut prng, 21);
test_ins(true, format!("div32 r{src}, r{dst}"), &mut prng, 21);
// test load, store
let rand = prng.next_u32() as i64;
let offset = prng.next_u32() as i16;
let addr = rand % 80 + 0x4_0000_0000i64 - offset as i64;
let mut tmp = (src + 1) % 10;
if dst == tmp {
tmp = (src + 2) % 10;
}
test_ins(
false,
format!(
"mov32 r{tmp},{}
mov64 r{src},{:#x}
lsh64 r{src},32
or64 r{src},r{tmp}
ldxb r{dst}, [r{src}{offset:+}]",
addr as i32,
addr >> 32,
),
&mut prng,
25,
);
test_ins(
false,
format!(
"mov32 r{tmp},{}
mov64 r{src},{:#x}
lsh64 r{src},32
or64 r{src},r{tmp}
stxb [r{src}{offset:+}], r{dst}",
addr as i32,
addr >> 32,
),
&mut prng,
25,
);
let addr = rand % 79 + 0x4_0000_0000i64 - offset as i64;
test_ins(
false,
format!(
"mov32 r{tmp},{}
mov64 r{src},{:#x}
lsh64 r{src},32
or64 r{src},r{tmp}
ldxh r{dst}, [r{src}{offset:+}]",
addr as i32,
addr >> 32,
),
&mut prng,
25,
);
test_ins(
false,
format!(
"mov32 r{tmp},{}
mov64 r{src},{:#x}
lsh64 r{src},32
or64 r{src},r{tmp}
stxh [r{src}{offset:+}], r{dst}",
addr as i32,
addr >> 32,
),
&mut prng,
25,
);
let addr = rand % 77 + 0x4_0000_0000i64 - offset as i64;
test_ins(
false,
format!(
"mov32 r{tmp},{}
mov64 r{src},{:#x}
lsh64 r{src},32
or64 r{src},r{tmp}
ldxw r{dst}, [r{src}{offset:+}]",
addr as i32,
addr >> 32,
),
&mut prng,
25,
);
test_ins(
false,
format!(
"mov32 r{tmp},{}
mov64 r{src},{:#x}
lsh64 r{src},32
or64 r{src},r{tmp}
stxw [r{src}{offset:+}], r{dst}",
addr as i32,
addr >> 32,
),
&mut prng,
25,
);
let addr = rand % 73 + 0x4_0000_0000i64 - offset as i64;
test_ins(
false,
format!(
"mov32 r{tmp},{}
mov64 r{src},{:#x}
lsh64 r{src},32
or64 r{src},r{tmp}
ldxdw r{dst}, [r{src}{offset:+}]",
addr as i32,
addr >> 32,
),
&mut prng,
25,
);
test_ins(
false,
format!(
"mov32 r{tmp},{}
mov64 r{src},{:#x}
lsh64 r{src},32
or64 r{src},r{tmp}
stxdw [r{src}{offset:+}], r{dst}",
addr as i32,
addr >> 32,
),
&mut prng,
25,
);
// test conditionals
for jc in [
"jeq", "jgt", "jge", "jlt", "jle", "jset", "jne", "jsgt", "jsge", "jslt",
"jsle",
] {
test_ins(
false,
format!(
"{jc} r{src}, r{dst}, l1
or64 r{src},0x12345678
ja l2
l1:
and64 r{dst},0x12345678
ja l2
l2:",
),
&mut prng,
23,
);
}
}
}
for _ in 0..10 {
let imm = prng.next_u64() as i64;
test_ins(true, format!("lddw r{src}, {imm}"), &mut prng, 21);
let mut imm = imm as i32;
test_ins(true, format!("neg64 r{src}"), &mut prng, 21);
test_ins(true, format!("neg32 r{src}"), &mut prng, 21);
test_ins(true, format!("mul64 r{src}, {imm}"), &mut prng, 21);
test_ins(true, format!("mod64 r{src}, {imm}"), &mut prng, 21);
test_ins(true, format!("div64 r{src}, {imm}"), &mut prng, 21);
test_ins(true, format!("mul32 r{src}, {imm}"), &mut prng, 21);
test_ins(true, format!("mod32 r{src}, {imm}"), &mut prng, 21);
test_ins(true, format!("div32 r{src}, {imm}"), &mut prng, 21);
test_ins(false, format!("mov64 r{src}, {imm}"), &mut prng, 21);
test_ins(false, format!("add64 r{src}, {imm}"), &mut prng, 21);
test_ins(false, format!("sub64 r{src}, {imm}"), &mut prng, 21);
test_ins(false, format!("or64 r{src}, {imm}"), &mut prng, 21);
test_ins(false, format!("xor64 r{src}, {imm}"), &mut prng, 21);
test_ins(false, format!("and64 r{src}, {imm}"), &mut prng, 21);
test_ins(false, format!("lmul64 r{src}, {imm}"), &mut prng, 21);
test_ins(false, format!("uhmul64 r{src}, {imm}"), &mut prng, 21);
test_ins(false, format!("shmul64 r{src}, {imm}"), &mut prng, 21);
test_ins(false, format!("udiv64 r{src}, {imm}"), &mut prng, 21);
test_ins(false, format!("urem64 r{src}, {imm}"), &mut prng, 21);
test_ins(false, format!("sdiv64 r{src}, {imm}"), &mut prng, 21);
test_ins(false, format!("srem64 r{src}, {imm}"), &mut prng, 21);
test_ins(false, format!("mov32 r{src}, {imm}"), &mut prng, 21);
test_ins(false, format!("add32 r{src}, {imm}"), &mut prng, 21);
test_ins(false, format!("sub32 r{src}, {imm}"), &mut prng, 21);
test_ins(false, format!("or32 r{src}, {imm}"), &mut prng, 21);
test_ins(false, format!("xor32 r{src}, {imm}"), &mut prng, 21);
test_ins(false, format!("and32 r{src}, {imm}"), &mut prng, 21);
test_ins(false, format!("lmul32 r{src}, {imm}"), &mut prng, 21);
test_ins(false, format!("udiv32 r{src}, {imm}"), &mut prng, 21);
test_ins(false, format!("urem32 r{src}, {imm}"), &mut prng, 21);
test_ins(false, format!("sdiv32 r{src}, {imm}"), &mut prng, 21);
test_ins(false, format!("srem32 r{src}, {imm}"), &mut prng, 21);
// test st imm
let rand = prng.next_u32() as i64;
let offset = prng.next_u32() as i16;
let tmp = (src + 1) % 10;
let addr = rand % 80 + 0x4_0000_0000i64 - offset as i64;
test_ins(
false,
format!(
"mov32 r{tmp},{}
mov64 r{src},{:#x}
lsh64 r{src},32
or64 r{src},r{tmp}
stb [r{src}{offset:+}], {}",
addr as i32,
addr >> 32,
imm as i8,
),
&mut prng,
25,
);
let addr = rand % 79 + 0x4_0000_0000i64 - offset as i64;
test_ins(
false,
format!(
"mov32 r{tmp},{}
mov64 r{src},{:#x}
lsh64 r{src},32
or64 r{src},r{tmp}
sth [r{src}{offset:+}], {}",
addr as i32,
addr >> 32,
imm as i16
),
&mut prng,
25,
);
let addr = rand % 77 + 0x4_0000_0000i64 - offset as i64;
test_ins(
false,
format!(
"mov32 r{tmp},{}
mov64 r{src},{:#x}
lsh64 r{src},32
or64 r{src},r{tmp}
stw [r{src}{offset:+}], {imm}",
addr as i32,
addr >> 32,
),
&mut prng,
25,
);
let addr = rand % 73 + 0x4_0000_0000i64 - offset as i64;
test_ins(
false,
format!(
"mov32 r{tmp},{}
mov64 r{src},{:#x}
lsh64 r{src},32
or64 r{src},r{tmp}
stdw [r{src}{offset:+}], {imm}",
addr as i32,
addr >> 32,
),
&mut prng,
25,
);
// unconditional jump
test_ins(
false,
format!(
"ja 1
xor64 r{src},0x12345678
1:",
),
&mut prng,
21,
);
for jc in [
"jeq", "jgt", "jge", "jlt", "jle", "jset", "jne", "jsgt", "jsge", "jslt", "jsle",
] {
test_ins(
false,
format!(
"{jc} r{src}, {imm}, l1
or64 r{src},0x12345678
ja l2
l1:
and64 r{src},0x12345678
ja l2
l2:",
),
&mut prng,
23,
);
}
imm &= 63;
test_ins(false, format!("lsh64 r{src}, {imm}"), &mut prng, 21);
test_ins(false, format!("rsh64 r{src}, {imm}"), &mut prng, 21);
test_ins(false, format!("arsh64 r{src}, {imm}"), &mut prng, 21);
test_ins(false, format!("hor64 r{src}, {imm}"), &mut prng, 21);
imm &= 31;
test_ins(false, format!("lsh32 r{src}, {imm}"), &mut prng, 21);
test_ins(false, format!("rsh32 r{src}, {imm}"), &mut prng, 21);
test_ins(false, format!("arsh32 r{src}, {imm}"), &mut prng, 21);
test_ins(false, format!("be64 r{src}"), &mut prng, 21);
test_ins(false, format!("be32 r{src}"), &mut prng, 21);
test_ins(false, format!("be16 r{src}"), &mut prng, 21);
test_ins(true, format!("le64 r{src}"), &mut prng, 21);
test_ins(true, format!("le32 r{src}"), &mut prng, 21);
test_ins(true, format!("le16 r{src}"), &mut prng, 21);
}
}
}
fn test_ins(v1: bool, ins: String, prng: &mut SmallRng, cu: u64) {
let mut input = [0u8; 80];
prng.fill_bytes(&mut input);
let asm = format!(
"
ldxdw r9, [r1+72]
ldxdw r8, [r1+64]
ldxdw r7, [r1+56]
ldxdw r6, [r1+48]
ldxdw r5, [r1+40]
ldxdw r4, [r1+32]
ldxdw r3, [r1+24]
ldxdw r2, [r1+16]
ldxdw r0, [r1+0]
ldxdw r1, [r1+8]
{ins}
xor64 r0, r1
xor64 r0, r2
xor64 r0, r3
xor64 r0, r4
xor64 r0, r5
xor64 r0, r6
xor64 r0, r7
xor64 r0, r8
xor64 r0, r9
exit"
);
let mut config = Config::default();
if v1 {
config.enabled_sbpf_versions = SBPFVersion::V1..=SBPFVersion::V1;
}
test_interpreter_and_jit_asm!(asm.as_str(), config, input, (), TestContextObject::new(cu));
}