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use crate::{bil::Bitvector, intermediate_representation::*};
use super::{create_computation, mock_context, NodeValue};
use mock_context::Context;
use mock_context::StartEnd;
fn mock_program() -> Term<Program> {
let var = Variable {
name: String::from("RAX"),
size: ByteSize::new(8),
is_temp: false,
};
let value = Expression::UnOp {
op: UnOpType::IntNegate,
arg: Box::new(Expression::Var(var.clone())),
};
let def_term1 = Term {
tid: Tid::new("def1".to_string()),
term: Def::Assign {
var: var.clone(),
value: value.clone(),
},
};
let def_term2 = Term {
tid: Tid::new("def2".to_string()),
term: Def::Assign {
var: var.clone(),
value: value.clone(),
},
};
let def_term3 = Term {
tid: Tid::new("def3".to_string()),
term: Def::Assign {
var: var.clone(),
value: value.clone(),
},
};
let def_term4 = Term {
tid: Tid::new("def4".to_string()),
term: Def::Assign {
var: var.clone(),
value: value.clone(),
},
};
let def_term5 = Term {
tid: Tid::new("def5".to_string()),
term: Def::Assign {
var: var.clone(),
value: value.clone(),
},
};
let call_term = Term {
tid: Tid::new("call".to_string()),
term: Jmp::Call {
target: Tid::new("sub2"),
return_: Some(Tid::new("sub1_blk2")),
},
};
let return_term = Term {
tid: Tid::new("return".to_string()),
term: Jmp::Return(Expression::Const(Bitvector::zero(64.into()))), // The return term does not matter
};
let jmp = Jmp::Branch(Tid::new("sub1_blk1"));
let jmp_term = Term {
tid: Tid::new("jump"),
term: jmp,
};
let sub1_blk1 = Term {
tid: Tid::new("sub1_blk1"),
term: Blk {
defs: vec![def_term1],
jmps: vec![call_term],
},
};
let sub1_blk2 = Term {
tid: Tid::new("sub1_blk2"),
term: Blk {
defs: vec![def_term5],
jmps: vec![jmp_term],
},
};
let sub1 = Term {
tid: Tid::new("sub1"),
term: Sub {
name: "sub1".to_string(),
blocks: vec![sub1_blk1, sub1_blk2],
},
};
let cond_jump = Jmp::CBranch {
target: Tid::new("sub1_blk1"),
condition: Expression::Const(Bitvector::from_u8(0)),
};
let cond_jump_term = Term {
tid: Tid::new("cond_jump"),
term: cond_jump,
};
let jump_term_2 = Term {
tid: Tid::new("jump2"),
term: Jmp::Branch(Tid::new("sub2_blk2")),
};
let sub2_blk1 = Term {
tid: Tid::new("sub2_blk1"),
term: Blk {
defs: vec![def_term2, def_term3],
jmps: vec![cond_jump_term, jump_term_2],
},
};
let sub2_blk2 = Term {
tid: Tid::new("sub2_blk2"),
term: Blk {
defs: vec![def_term4],
jmps: vec![return_term],
},
};
let sub2 = Term {
tid: Tid::new("sub2"),
term: Sub {
name: "sub2".to_string(),
blocks: vec![sub2_blk1, sub2_blk2],
},
};
let program = Term {
tid: Tid::new("program"),
term: Program {
subs: vec![sub1, sub2],
extern_symbols: Vec::new(),
entry_points: Vec::new(),
address_base_offset: 0,
},
};
program
}
#[test]
fn backward_fixpoint() {
let project = Project {
program: mock_program(),
cpu_architecture: String::from("x86"),
stack_pointer_register: Variable {
name: String::from("RSP"),
size: ByteSize::new(8),
is_temp: false,
},
calling_conventions: Vec::new(),
};
let mock_con = Context::new(&project);
let mut computation = create_computation(mock_con.clone(), None);
computation.set_node_value(
*mock_con
.tid_to_node_index
.get(&(Tid::new("sub1"), Tid::new("sub1_blk1"), StartEnd::Start))
.unwrap(),
NodeValue::Value(0),
);
computation.compute_with_max_steps(100);
// The fixpoint values of all 12 BlockStart/BlockEnd nodes are compared with their expected value
assert_eq!(
*computation
.get_node_value(
*mock_con
.tid_to_node_index
.get(&(Tid::new("sub1"), Tid::new("sub1_blk1"), StartEnd::Start))
.unwrap()
)
.unwrap()
.unwrap_value(),
0 as u64
);
assert_eq!(
*computation
.get_node_value(
*mock_con
.tid_to_node_index
.get(&(Tid::new("sub1"), Tid::new("sub1_blk1"), StartEnd::End))
.unwrap()
)
.unwrap()
.unwrap_value(),
1 as u64
);
assert_eq!(
*computation
.get_node_value(
*mock_con
.tid_to_node_index
.get(&(Tid::new("sub1"), Tid::new("sub1_blk2"), StartEnd::Start))
.unwrap()
)
.unwrap()
.unwrap_value(),
1 as u64
);
assert_eq!(
*computation
.get_node_value(
*mock_con
.tid_to_node_index
.get(&(Tid::new("sub1"), Tid::new("sub1_blk2"), StartEnd::End))
.unwrap()
)
.unwrap()
.unwrap_value(),
0 as u64
);
assert_eq!(
*computation
.get_node_value(
*mock_con
.tid_to_node_index
.get(&(Tid::new("sub2"), Tid::new("sub2_blk1"), StartEnd::Start))
.unwrap()
)
.unwrap()
.unwrap_value(),
4 as u64
);
assert_eq!(
*computation
.get_node_value(
*mock_con
.tid_to_node_index
.get(&(Tid::new("sub2"), Tid::new("sub2_blk1"), StartEnd::End))
.unwrap()
)
.unwrap()
.unwrap_value(),
2 as u64
);
assert_eq!(
*computation
.get_node_value(
*mock_con
.tid_to_node_index
.get(&(Tid::new("sub2"), Tid::new("sub2_blk2"), StartEnd::Start))
.unwrap()
)
.unwrap()
.unwrap_value(),
2 as u64
);
assert_eq!(
*computation
.get_node_value(
*mock_con
.tid_to_node_index
.get(&(Tid::new("sub2"), Tid::new("sub2_blk2"), StartEnd::End))
.unwrap()
)
.unwrap()
.unwrap_value(),
1 as u64
);
assert_eq!(
*computation
.get_node_value(
*mock_con
.tid_to_node_index
.get(&(Tid::new("sub2"), Tid::new("sub1_blk1"), StartEnd::Start))
.unwrap()
)
.unwrap()
.unwrap_value(),
5 as u64
);
assert_eq!(
*computation
.get_node_value(
*mock_con
.tid_to_node_index
.get(&(Tid::new("sub2"), Tid::new("sub1_blk1"), StartEnd::End))
.unwrap()
)
.unwrap()
.unwrap_value(),
4 as u64
);
assert_eq!(
*computation
.get_node_value(
*mock_con
.tid_to_node_index
.get(&(Tid::new("sub2"), Tid::new("sub1_blk2"), StartEnd::Start))
.unwrap()
)
.unwrap()
.unwrap_value(),
6 as u64
);
assert_eq!(
*computation
.get_node_value(
*mock_con
.tid_to_node_index
.get(&(Tid::new("sub2"), Tid::new("sub1_blk2"), StartEnd::End))
.unwrap()
)
.unwrap()
.unwrap_value(),
5 as u64
);
}