diff options
Diffstat (limited to 'crates')
| -rw-r--r-- | crates/tinywasm/src/error.rs | 8 | ||||
| -rw-r--r-- | crates/tinywasm/src/runtime/executor/macros.rs | 18 | ||||
| -rw-r--r-- | crates/tinywasm/src/runtime/executor/mod.rs | 16 | ||||
| -rw-r--r-- | crates/tinywasm/tests/generated/mvp.csv | 2 | ||||
| -rw-r--r-- | crates/tinywasm/tests/testsuite/run.rs | 15 |
5 files changed, 37 insertions, 22 deletions
diff --git a/crates/tinywasm/src/error.rs b/crates/tinywasm/src/error.rs index 9121e72..2d5a87f 100644 --- a/crates/tinywasm/src/error.rs +++ b/crates/tinywasm/src/error.rs @@ -50,10 +50,10 @@ impl Trap { pub fn message(&self) -> &'static str { match self { Self::Unreachable => "unreachable", - Self::MemoryOutOfBounds { .. } => "memory out of bounds", - Self::TableOutOfBounds { .. } => "table out of bounds", - Self::DivisionByZero => "division by zero", - Self::InvalidConversionToInt => "invalid conversion to int", + Self::MemoryOutOfBounds { .. } => "out of bounds memory access", + Self::TableOutOfBounds { .. } => "out of bounds table access", + Self::DivisionByZero => "integer divide by zero", + Self::InvalidConversionToInt => "invalid conversion to integer", Self::IntegerOverflow => "integer overflow", Self::CallStackOverflow => "call stack exhausted", } diff --git a/crates/tinywasm/src/runtime/executor/macros.rs b/crates/tinywasm/src/runtime/executor/macros.rs index 6d37c9a..48c50f4 100644 --- a/crates/tinywasm/src/runtime/executor/macros.rs +++ b/crates/tinywasm/src/runtime/executor/macros.rs @@ -201,13 +201,13 @@ macro_rules! arithmetic_single { } /// Apply an arithmetic operation to two values on the stack with error checking -macro_rules! checked_arithmetic { +macro_rules! checked_int_arithmetic { // Direct conversion with error checking (two types) - ($from:tt, $to:tt, $stack:ident, $trap:expr) => {{ - checked_arithmetic!($from, $to, $to, $stack, $trap) + ($from:tt, $to:tt, $stack:ident) => {{ + checked_int_arithmetic!($from, $to, $to, $stack) }}; - ($op:ident, $from:ty, $to:ty, $stack:ident, $trap:expr) => {{ + ($op:ident, $from:ty, $to:ty, $stack:ident) => {{ let [a, b] = $stack.values.pop_n_const::<2>()?; let a: $from = a.into(); let b: $from = b.into(); @@ -215,7 +215,13 @@ macro_rules! checked_arithmetic { let a_casted: $to = a as $to; let b_casted: $to = b as $to; - let result = a_casted.$op(b_casted).ok_or_else(|| Error::Trap($trap))?; + if b_casted == 0 { + return Err(Error::Trap(crate::Trap::DivisionByZero)); + } + + let result = a_casted + .$op(b_casted) + .ok_or_else(|| Error::Trap(crate::Trap::IntegerOverflow))?; // Cast back to original type if different $stack.values.push((result as $from).into()); @@ -224,8 +230,8 @@ macro_rules! checked_arithmetic { pub(super) use arithmetic; pub(super) use arithmetic_single; -pub(super) use checked_arithmetic; pub(super) use checked_conv_float; +pub(super) use checked_int_arithmetic; pub(super) use comp; pub(super) use comp_zero; pub(super) use conv; diff --git a/crates/tinywasm/src/runtime/executor/mod.rs b/crates/tinywasm/src/runtime/executor/mod.rs index ee0d7d3..4b0a328 100644 --- a/crates/tinywasm/src/runtime/executor/mod.rs +++ b/crates/tinywasm/src/runtime/executor/mod.rs @@ -433,15 +433,15 @@ fn exec_one( F64Mul => arithmetic!(*, f64, stack), // these can trap - I32DivS => checked_arithmetic!(checked_div, i32, stack, crate::Trap::DivisionByZero), - I64DivS => checked_arithmetic!(checked_div, i64, stack, crate::Trap::DivisionByZero), - I32DivU => checked_arithmetic!(checked_div, i32, u32, stack, crate::Trap::DivisionByZero), - I64DivU => checked_arithmetic!(checked_div, i64, u64, stack, crate::Trap::DivisionByZero), + I32DivS => checked_int_arithmetic!(checked_div, i32, stack), + I64DivS => checked_int_arithmetic!(checked_div, i64, stack), + I32DivU => checked_int_arithmetic!(checked_div, i32, u32, stack), + I64DivU => checked_int_arithmetic!(checked_div, i64, u64, stack), - I32RemS => checked_arithmetic!(checked_wrapping_rem, i32, stack, crate::Trap::DivisionByZero), - I64RemS => checked_arithmetic!(checked_wrapping_rem, i64, stack, crate::Trap::DivisionByZero), - I32RemU => checked_arithmetic!(checked_wrapping_rem, i32, u32, stack, crate::Trap::DivisionByZero), - I64RemU => checked_arithmetic!(checked_wrapping_rem, i64, u64, stack, crate::Trap::DivisionByZero), + I32RemS => checked_int_arithmetic!(checked_wrapping_rem, i32, stack), + I64RemS => checked_int_arithmetic!(checked_wrapping_rem, i64, stack), + I32RemU => checked_int_arithmetic!(checked_wrapping_rem, i32, u32, stack), + I64RemU => checked_int_arithmetic!(checked_wrapping_rem, i64, u64, stack), I32And => arithmetic!(bitand, i32, stack), I64And => arithmetic!(bitand, i64, stack), diff --git a/crates/tinywasm/tests/generated/mvp.csv b/crates/tinywasm/tests/generated/mvp.csv index 1cea924..b1a0adc 100644 --- a/crates/tinywasm/tests/generated/mvp.csv +++ b/crates/tinywasm/tests/generated/mvp.csv @@ -2,4 +2,4 @@ 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diff --git a/crates/tinywasm/tests/testsuite/run.rs b/crates/tinywasm/tests/testsuite/run.rs index 6f86edb..8b31a88 100644 --- a/crates/tinywasm/tests/testsuite/run.rs +++ b/crates/tinywasm/tests/testsuite/run.rs @@ -195,7 +195,7 @@ impl TestSuite { test_group.add_result( &format!("AssertExhaustion({})", i), span.linecol_in(wast), - Err(eyre!("expected trap: {}", message)), + Err(eyre!("expected trap: {}, got: {}", message, trap.message())), ); continue; } @@ -203,7 +203,7 @@ impl TestSuite { test_group.add_result(&format!("AssertExhaustion({})", i), span.linecol_in(wast), Ok(())); } - AssertTrap { exec, message: _, span } => { + AssertTrap { exec, message, span } => { let res: Result<tinywasm::Result<()>, _> = catch_unwind_silent(|| { let (module, name, args) = match exec { wast::WastExecute::Wat(mut wat) => { @@ -236,7 +236,16 @@ impl TestSuite { span.linecol_in(wast), Err(eyre!("test panicked: {:?}", try_downcast_panic(err))), ), - Ok(Err(tinywasm::Error::Trap(_))) => { + Ok(Err(tinywasm::Error::Trap(trap))) => { + if trap.message() != message { + test_group.add_result( + &format!("AssertTrap({})", i), + span.linecol_in(wast), + Err(eyre!("expected trap: {}, got: {}", message, trap.message())), + ); + continue; + } + test_group.add_result(&format!("AssertTrap({})", i), span.linecol_in(wast), Ok(())) } Ok(Err(err)) => test_group.add_result( |