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authoriximeow <me@iximeow.net>2024-03-17 08:49:03 +0000
committeriximeow <me@iximeow.net>2024-03-17 08:49:03 +0000
commita5742df07225c1063df5246b760951774290e87a (patch)
tree6be07b6aa16b3518e0cf495edd30c486a09cbf0b /differential-tests/tests
parent2ea9ea69b3c6fe033c82df16b310acd6aa8a6728 (diff)
differential tests: width-aware immediate parsing
Diffstat (limited to 'differential-tests/tests')
-rw-r--r--differential-tests/tests/capstone-differential.rs33
1 files changed, 26 insertions, 7 deletions
diff --git a/differential-tests/tests/capstone-differential.rs b/differential-tests/tests/capstone-differential.rs
index ef17bd1..459c9d6 100644
--- a/differential-tests/tests/capstone-differential.rs
+++ b/differential-tests/tests/capstone-differential.rs
@@ -90,10 +90,12 @@ impl PartialEq for ParsedOperand {
#[test]
fn test_operand_parsing() {
- assert_eq!(ParsedOperand::parse("xzr"), (ParsedOperand::Register { size: 'x', num: 0 }, 3));
- assert_eq!(ParsedOperand::parse("wzr"), (ParsedOperand::Register { size: 'w', num: 0 }, 3));
- assert_eq!(ParsedOperand::parse("w1"), (ParsedOperand::Register { size: 'w', num: 1 }, 2));
- assert_eq!(ParsedOperand::parse("x1"), (ParsedOperand::Register { size: 'x', num: 1 }, 2));
+ assert_eq!(ParsedOperand::parse("xzr", 64), (ParsedOperand::Register { size: 'x', num: 32 }, 3));
+ assert_eq!(ParsedOperand::parse("wzr", 64), (ParsedOperand::Register { size: 'w', num: 32 }, 3));
+ assert_eq!(ParsedOperand::parse("xsp", 64), (ParsedOperand::Register { size: 'x', num: 33 }, 3));
+ assert_eq!(ParsedOperand::parse("wsp", 64), (ParsedOperand::Register { size: 'w', num: 33 }, 3));
+ assert_eq!(ParsedOperand::parse("w1", 64), (ParsedOperand::Register { size: 'w', num: 1 }, 2));
+ assert_eq!(ParsedOperand::parse("x1", 64), (ParsedOperand::Register { size: 'x', num: 1 }, 2));
}
#[test]
@@ -125,10 +127,15 @@ fn test_instruction_parsing() {
});
let inst2 = ParsedDisassembly::parse("stlurb w0, [x0, #1]");
assert_eq!(inst, inst2);
+
+ let inst = ParsedDisassembly::parse("mov wsp, #0x80000001");
+ assert_eq!(inst.opcode, "mov");
+ assert_eq!(inst.operands[0], Some(ParsedOperand::Register { size: 'w', num: 33 }));
+ assert_eq!(inst.operands[1], Some(ParsedOperand::Immediate(-0x7fffffff)));
}
impl ParsedOperand {
- fn parse(s: &str) -> (Self, usize) {
+ fn parse(s: &str, width: u8) -> (Self, usize) {
let parse_hex_or_dec = |mut s: &str| {
let mut negate = false;
if s.as_bytes()[0] == b'-' {
@@ -157,6 +164,11 @@ impl ParsedOperand {
(ParsedOperand::Float(f64::from_str(imm_str).expect("can parse string")), end)
} else {
let imm = parse_hex_or_dec(imm_str);
+ let imm = if width == 32 {
+ imm as i32 as i64
+ } else {
+ imm
+ };
(ParsedOperand::Immediate(imm), end)
}
} else if s.as_bytes()[0] == b'$' {
@@ -232,7 +244,10 @@ impl ParsedOperand {
match (s.as_bytes()[0] as char) {
sz @ 'w' | sz @ 'x' => {
if &s[1..end] == "zr" {
- return (ParsedOperand::Register { size: sz, num: 0 }, 3);
+ return (ParsedOperand::Register { size: sz, num: 32 }, 3);
+ }
+ if &s[1..end] == "sp" {
+ return (ParsedOperand::Register { size: sz, num: 33 }, 3);
}
let num: Result<u8, ParseIntError> = s[1..end].parse();
match num {
@@ -293,14 +308,18 @@ impl ParsedDisassembly {
let opcode = opcode.to_string();
let mut i = 0;
+ let mut width = 64;
while operands_text.len() > 0 {
if operands_text.as_bytes()[0] == b',' {
operands_text = &operands_text[1..];
}
operands_text = operands_text.trim();
- let (parsed, amount) = ParsedOperand::parse(&operands_text);
+ let (parsed, amount) = ParsedOperand::parse(&operands_text, width);
operands[i] = Some(parsed);
+ if let Some(ParsedOperand::Register { size: 'w', .. }) = &operands[i] {
+ width = 32;
+ }
operands_text = &operands_text[amount..];
i += 1;
}