diff options
Diffstat (limited to 'third_party/rust/wast/src/core/expr.rs')
| -rw-r--r-- | third_party/rust/wast/src/core/expr.rs | 158 |
1 files changed, 87 insertions, 71 deletions
diff --git a/third_party/rust/wast/src/core/expr.rs b/third_party/rust/wast/src/core/expr.rs index b45950b896..df0abb7cd0 100644 --- a/third_party/rust/wast/src/core/expr.rs +++ b/third_party/rust/wast/src/core/expr.rs @@ -184,7 +184,6 @@ impl<'a> ExpressionParser<'a> { // seen i @ Instruction::Block(_) | i @ Instruction::Loop(_) - | i @ Instruction::Let(_) | i @ Instruction::TryTable(_) => { self.instrs.push(i); self.stack.push(Level::EndWith(Instruction::End(None))); @@ -350,7 +349,7 @@ macro_rules! instructions { }) => ( /// A listing of all WebAssembly instructions that can be in a module /// that this crate currently parses. - #[derive(Debug)] + #[derive(Debug, Clone)] #[allow(missing_docs)] pub enum Instruction<'a> { $( @@ -468,8 +467,6 @@ instructions! { // function-references proposal CallRef(Index<'a>) : [0x14] : "call_ref", ReturnCallRef(Index<'a>) : [0x15] : "return_call_ref", - FuncBind(FuncBindType<'a>) : [0x16] : "func.bind", - Let(LetType<'a>) : [0x17] : "let", Drop : [0x1a] : "drop", Select(SelectTypes<'a>) : [] : "select", @@ -574,8 +571,8 @@ instructions! { I32Const(i32) : [0x41] : "i32.const", I64Const(i64) : [0x42] : "i64.const", - F32Const(Float32) : [0x43] : "f32.const", - F64Const(Float64) : [0x44] : "f64.const", + F32Const(F32) : [0x43] : "f32.const", + F64Const(F64) : [0x44] : "f64.const", I32Clz : [0x67] : "i32.clz", I32Ctz : [0x68] : "i32.ctz", @@ -803,6 +800,10 @@ instructions! { I64AtomicRmw16CmpxchgU(MemArg<2>) : [0xfe, 0x4d] : "i64.atomic.rmw16.cmpxchg_u", I64AtomicRmw32CmpxchgU(MemArg<4>) : [0xfe, 0x4e] : "i64.atomic.rmw32.cmpxchg_u", + // proposal: shared-everything-threads + GlobalAtomicGet(OrderedAccess<'a>) : [0xfe, 0x4f] : "global.atomic.get", + GlobalAtomicSet(OrderedAccess<'a>) : [0xfe, 0x50] : "global.atomic.set", + // proposal: simd // // https://webassembly.github.io/simd/core/binary/instructions.html @@ -1123,7 +1124,7 @@ impl<'a> Instruction<'a> { /// /// This is used to label blocks and also annotate what types are expected for /// the block. -#[derive(Debug)] +#[derive(Debug, Clone)] #[allow(missing_docs)] pub struct BlockType<'a> { pub label: Option<Id<'a>>, @@ -1143,7 +1144,7 @@ impl<'a> Parse<'a> for BlockType<'a> { } } -#[derive(Debug)] +#[derive(Debug, Clone)] #[allow(missing_docs)] pub struct TryTable<'a> { pub block: Box<BlockType<'a>>, @@ -1187,7 +1188,7 @@ impl<'a> Parse<'a> for TryTable<'a> { } } -#[derive(Debug)] +#[derive(Debug, Clone)] #[allow(missing_docs)] pub enum TryTableCatchKind<'a> { // Catch a tagged exception, do not capture an exnref. @@ -1210,50 +1211,16 @@ impl<'a> TryTableCatchKind<'a> { } } -#[derive(Debug)] +#[derive(Debug, Clone)] #[allow(missing_docs)] pub struct TryTableCatch<'a> { pub kind: TryTableCatchKind<'a>, pub label: Index<'a>, } -/// Extra information associated with the func.bind instruction. -#[derive(Debug)] -#[allow(missing_docs)] -pub struct FuncBindType<'a> { - pub ty: TypeUse<'a, FunctionType<'a>>, -} - -impl<'a> Parse<'a> for FuncBindType<'a> { - fn parse(parser: Parser<'a>) -> Result<Self> { - Ok(FuncBindType { - ty: parser - .parse::<TypeUse<'a, FunctionTypeNoNames<'a>>>()? - .into(), - }) - } -} - -/// Extra information associated with the let instruction. -#[derive(Debug)] -#[allow(missing_docs)] -pub struct LetType<'a> { - pub block: Box<BlockType<'a>>, - pub locals: Box<[Local<'a>]>, -} - -impl<'a> Parse<'a> for LetType<'a> { - fn parse(parser: Parser<'a>) -> Result<Self> { - Ok(LetType { - block: parser.parse()?, - locals: Local::parse_remainder(parser)?.into(), - }) - } -} - /// Extra information associated with the `br_table` instruction. #[allow(missing_docs)] -#[derive(Debug)] +#[derive(Debug, Clone)] pub struct BrTableIndices<'a> { pub labels: Vec<Index<'a>>, pub default: Index<'a>, @@ -1271,7 +1238,7 @@ impl<'a> Parse<'a> for BrTableIndices<'a> { } /// Payload for lane-related instructions. Unsigned with no + prefix. -#[derive(Debug)] +#[derive(Debug, Clone)] pub struct LaneArg { /// The lane argument. pub lane: u8, @@ -1299,7 +1266,7 @@ impl<'a> Parse<'a> for LaneArg { /// Payload for memory-related instructions indicating offset/alignment of /// memory accesses. -#[derive(Debug)] +#[derive(Debug, Clone)] pub struct MemArg<'a> { /// The alignment of this access. /// @@ -1374,7 +1341,7 @@ impl<'a> MemArg<'a> { } /// Extra data associated with the `loadN_lane` and `storeN_lane` instructions. -#[derive(Debug)] +#[derive(Debug, Clone)] pub struct LoadOrStoreLane<'a> { /// The memory argument for this instruction. pub memarg: MemArg<'a>, @@ -1428,7 +1395,7 @@ impl<'a> LoadOrStoreLane<'a> { } /// Extra data associated with the `call_indirect` instruction. -#[derive(Debug)] +#[derive(Debug, Clone)] pub struct CallIndirect<'a> { /// The table that this call is going to be indexing. pub table: Index<'a>, @@ -1449,7 +1416,7 @@ impl<'a> Parse<'a> for CallIndirect<'a> { } /// Extra data associated with the `table.init` instruction -#[derive(Debug)] +#[derive(Debug, Clone)] pub struct TableInit<'a> { /// The index of the table we're copying into. pub table: Index<'a>, @@ -1471,7 +1438,7 @@ impl<'a> Parse<'a> for TableInit<'a> { } /// Extra data associated with the `table.copy` instruction. -#[derive(Debug)] +#[derive(Debug, Clone)] pub struct TableCopy<'a> { /// The index of the destination table to copy into. pub dst: Index<'a>, @@ -1493,7 +1460,7 @@ impl<'a> Parse<'a> for TableCopy<'a> { } /// Extra data associated with unary table instructions. -#[derive(Debug)] +#[derive(Debug, Clone)] pub struct TableArg<'a> { /// The index of the table argument. pub dst: Index<'a>, @@ -1511,7 +1478,7 @@ impl<'a> Parse<'a> for TableArg<'a> { } /// Extra data associated with unary memory instructions. -#[derive(Debug)] +#[derive(Debug, Clone)] pub struct MemoryArg<'a> { /// The index of the memory space. pub mem: Index<'a>, @@ -1529,7 +1496,7 @@ impl<'a> Parse<'a> for MemoryArg<'a> { } /// Extra data associated with the `memory.init` instruction -#[derive(Debug)] +#[derive(Debug, Clone)] pub struct MemoryInit<'a> { /// The index of the data segment we're copying into memory. pub data: Index<'a>, @@ -1551,7 +1518,7 @@ impl<'a> Parse<'a> for MemoryInit<'a> { } /// Extra data associated with the `memory.copy` instruction -#[derive(Debug)] +#[derive(Debug, Clone)] pub struct MemoryCopy<'a> { /// The index of the memory we're copying from. pub src: Index<'a>, @@ -1573,7 +1540,7 @@ impl<'a> Parse<'a> for MemoryCopy<'a> { } /// Extra data associated with the `struct.get/set` instructions -#[derive(Debug)] +#[derive(Debug, Clone)] pub struct StructAccess<'a> { /// The index of the struct type we're accessing. pub r#struct: Index<'a>, @@ -1591,7 +1558,7 @@ impl<'a> Parse<'a> for StructAccess<'a> { } /// Extra data associated with the `array.fill` instruction -#[derive(Debug)] +#[derive(Debug, Clone)] pub struct ArrayFill<'a> { /// The index of the array type we're filling. pub array: Index<'a>, @@ -1606,7 +1573,7 @@ impl<'a> Parse<'a> for ArrayFill<'a> { } /// Extra data associated with the `array.copy` instruction -#[derive(Debug)] +#[derive(Debug, Clone)] pub struct ArrayCopy<'a> { /// The index of the array type we're copying to. pub dest_array: Index<'a>, @@ -1624,7 +1591,7 @@ impl<'a> Parse<'a> for ArrayCopy<'a> { } /// Extra data associated with the `array.init_[data/elem]` instruction -#[derive(Debug)] +#[derive(Debug, Clone)] pub struct ArrayInit<'a> { /// The index of the array type we're initializing. pub array: Index<'a>, @@ -1642,7 +1609,7 @@ impl<'a> Parse<'a> for ArrayInit<'a> { } /// Extra data associated with the `array.new_fixed` instruction -#[derive(Debug)] +#[derive(Debug, Clone)] pub struct ArrayNewFixed<'a> { /// The index of the array type we're accessing. pub array: Index<'a>, @@ -1660,7 +1627,7 @@ impl<'a> Parse<'a> for ArrayNewFixed<'a> { } /// Extra data associated with the `array.new_data` instruction -#[derive(Debug)] +#[derive(Debug, Clone)] pub struct ArrayNewData<'a> { /// The index of the array type we're accessing. pub array: Index<'a>, @@ -1678,7 +1645,7 @@ impl<'a> Parse<'a> for ArrayNewData<'a> { } /// Extra data associated with the `array.new_elem` instruction -#[derive(Debug)] +#[derive(Debug, Clone)] pub struct ArrayNewElem<'a> { /// The index of the array type we're accessing. pub array: Index<'a>, @@ -1696,7 +1663,7 @@ impl<'a> Parse<'a> for ArrayNewElem<'a> { } /// Extra data associated with the `ref.cast` instruction -#[derive(Debug)] +#[derive(Debug, Clone)] pub struct RefCast<'a> { /// The type to cast to. pub r#type: RefType<'a>, @@ -1711,7 +1678,7 @@ impl<'a> Parse<'a> for RefCast<'a> { } /// Extra data associated with the `ref.test` instruction -#[derive(Debug)] +#[derive(Debug, Clone)] pub struct RefTest<'a> { /// The type to test for. pub r#type: RefType<'a>, @@ -1726,7 +1693,7 @@ impl<'a> Parse<'a> for RefTest<'a> { } /// Extra data associated with the `br_on_cast` instruction -#[derive(Debug)] +#[derive(Debug, Clone)] pub struct BrOnCast<'a> { /// The label to branch to. pub label: Index<'a>, @@ -1747,7 +1714,7 @@ impl<'a> Parse<'a> for BrOnCast<'a> { } /// Extra data associated with the `br_on_cast_fail` instruction -#[derive(Debug)] +#[derive(Debug, Clone)] pub struct BrOnCastFail<'a> { /// The label to branch to. pub label: Index<'a>, @@ -1767,16 +1734,65 @@ impl<'a> Parse<'a> for BrOnCastFail<'a> { } } +/// The memory ordering for atomic instructions. +/// +/// For an in-depth explanation of memory orderings, see the C++ documentation +/// for [`memory_order`] or the Rust documentation for [`atomic::Ordering`]. +/// +/// [`memory_order`]: https://en.cppreference.com/w/cpp/atomic/memory_order +/// [`atomic::Ordering`]: https://doc.rust-lang.org/std/sync/atomic/enum.Ordering.html +#[derive(Clone, Debug)] +pub enum Ordering { + /// Like `AcqRel` but all threads see all sequentially consistent operations + /// in the same order. + AcqRel, + /// For a load, it acquires; this orders all operations before the last + /// "releasing" store. For a store, it releases; this orders all operations + /// before it at the next "acquiring" load. + SeqCst, +} + +impl<'a> Parse<'a> for Ordering { + fn parse(parser: Parser<'a>) -> Result<Self> { + if parser.peek::<kw::seq_cst>()? { + parser.parse::<kw::seq_cst>()?; + Ok(Ordering::SeqCst) + } else if parser.peek::<kw::acq_rel>()? { + parser.parse::<kw::acq_rel>()?; + Ok(Ordering::AcqRel) + } else { + Err(parser.error("expected a memory ordering: `seq_cst` or `acq_rel`")) + } + } +} + +/// Extra data associated with the `global.atomic.*` instructions. +#[derive(Clone, Debug)] +pub struct OrderedAccess<'a> { + /// The memory ordering for this atomic instruction. + pub ordering: Ordering, + /// The index of the global to access. + pub index: Index<'a>, +} + +impl<'a> Parse<'a> for OrderedAccess<'a> { + fn parse(parser: Parser<'a>) -> Result<Self> { + let ordering = parser.parse()?; + let index = parser.parse()?; + Ok(OrderedAccess { ordering, index }) + } +} + /// Different ways to specify a `v128.const` instruction -#[derive(Debug)] +#[derive(Clone, Debug)] #[allow(missing_docs)] pub enum V128Const { I8x16([i8; 16]), I16x8([i16; 8]), I32x4([i32; 4]), I64x2([i64; 2]), - F32x4([Float32; 4]), - F64x2([Float64; 2]), + F32x4([F32; 4]), + F64x2([F64; 2]), } impl V128Const { @@ -1934,7 +1950,7 @@ impl<'a> Parse<'a> for V128Const { } /// Lanes being shuffled in the `i8x16.shuffle` instruction -#[derive(Debug)] +#[derive(Debug, Clone)] pub struct I8x16Shuffle { #[allow(missing_docs)] pub lanes: [u8; 16], @@ -1966,7 +1982,7 @@ impl<'a> Parse<'a> for I8x16Shuffle { } /// Payload of the `select` instructions -#[derive(Debug)] +#[derive(Debug, Clone)] pub struct SelectTypes<'a> { #[allow(missing_docs)] pub tys: Option<Vec<ValType<'a>>>, |