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Unified Diff: src/wasm/wasm-opcodes.h

Issue 1504713014: Initial import of v8-native WASM. (Closed) Base URL: https://chromium.googlesource.com/v8/v8.git@master
Patch Set: Created 5 years ago
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Index: src/wasm/wasm-opcodes.h
diff --git a/src/wasm/wasm-opcodes.h b/src/wasm/wasm-opcodes.h
new file mode 100644
index 0000000000000000000000000000000000000000..ae2843a6c154da5a7f7ebd5668085f2a1de30ac2
--- /dev/null
+++ b/src/wasm/wasm-opcodes.h
@@ -0,0 +1,476 @@
+// Copyright 2015 the V8 project authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+#ifndef V8_WASM_OPCODES_H_
+#define V8_WASM_OPCODES_H_
+
+#include "src/machine-type.h"
+#include "src/signature.h"
+
+namespace v8 {
+namespace internal {
+namespace wasm {
+
+// Binary encoding of local types.
+enum LocalTypeCode {
+ kLocalVoid = 0,
+ kLocalI32 = 1,
+ kLocalI64 = 2,
+ kLocalF32 = 3,
+ kLocalF64 = 4
+};
+
+// Binary encoding of memory types.
+enum MemTypeCode {
+ kMemI8 = 0,
+ kMemU8 = 1,
+ kMemI16 = 2,
+ kMemU16 = 3,
+ kMemI32 = 4,
+ kMemU32 = 5,
+ kMemI64 = 6,
+ kMemU64 = 7,
+ kMemF32 = 8,
+ kMemF64 = 9
+};
+
+// We reuse the internal machine type to represent WebAssembly AST types.
+// A typedef improves readability without adding a whole new type system.
+typedef MachineRepresentation LocalType;
+const LocalType kAstStmt = MachineRepresentation::kNone;
+const LocalType kAstI32 = MachineRepresentation::kWord32;
+const LocalType kAstI64 = MachineRepresentation::kWord64;
+const LocalType kAstF32 = MachineRepresentation::kFloat32;
+const LocalType kAstF64 = MachineRepresentation::kFloat64;
+// We use kTagged here because kNone is already used by kAstStmt.
+const LocalType kAstEnd = MachineRepresentation::kTagged;
+
+// Functionality related to encoding memory accesses.
+struct MemoryAccess {
+ // Atomicity annotations for access to the memory and globals.
+ enum Atomicity {
+ kNone = 0, // non-atomic
+ kSequential = 1, // sequential consistency
+ kAcquire = 2, // acquire semantics
+ kRelease = 3 // release semantics
+ };
+
+ // Alignment annotations for memory accesses.
+ enum Alignment { kAligned = 0, kUnaligned = 1 };
+
+ // Bitfields for the various annotations for memory accesses.
+ typedef BitField<Alignment, 7, 1> AlignmentField;
+ typedef BitField<Atomicity, 5, 2> AtomicityField;
+ typedef BitField<bool, 4, 1> OffsetField;
+};
+
+typedef Signature<LocalType> FunctionSig;
+
+// Control expressions and blocks.
+#define FOREACH_CONTROL_OPCODE(V) \
+ V(Nop, 0x00, _) \
+ V(Block, 0x01, _) \
+ V(Loop, 0x02, _) \
+ V(If, 0x03, _) \
+ V(IfElse, 0x04, _) \
+ V(Select, 0x05, _) \
+ V(Br, 0x06, _) \
+ V(BrIf, 0x07, _) \
+ V(TableSwitch, 0x08, _) \
+ V(Return, 0x14, _) \
+ V(Unreachable, 0x15, _)
+// TODO(titzer): numbering
+
+// Constants, locals, globals, and calls.
+#define FOREACH_MISC_OPCODE(V) \
+ V(I8Const, 0x09, _) \
+ V(I32Const, 0x0a, _) \
+ V(I64Const, 0x0b, _) \
+ V(F64Const, 0x0c, _) \
+ V(F32Const, 0x0d, _) \
+ V(GetLocal, 0x0e, _) \
+ V(SetLocal, 0x0f, _) \
+ V(LoadGlobal, 0x10, _) \
+ V(StoreGlobal, 0x11, _) \
+ V(CallFunction, 0x12, _) \
+ V(CallIndirect, 0x13, _)
+
+// Load memory expressions.
+#define FOREACH_LOAD_MEM_OPCODE(V) \
+ V(I32LoadMem8S, 0x20, i_i) \
+ V(I32LoadMem8U, 0x21, i_i) \
+ V(I32LoadMem16S, 0x22, i_i) \
+ V(I32LoadMem16U, 0x23, i_i) \
+ V(I64LoadMem8S, 0x24, l_i) \
+ V(I64LoadMem8U, 0x25, l_i) \
+ V(I64LoadMem16S, 0x26, l_i) \
+ V(I64LoadMem16U, 0x27, l_i) \
+ V(I64LoadMem32S, 0x28, l_i) \
+ V(I64LoadMem32U, 0x29, l_i) \
+ V(I32LoadMem, 0x2a, i_i) \
+ V(I64LoadMem, 0x2b, l_i) \
+ V(F32LoadMem, 0x2c, f_i) \
+ V(F64LoadMem, 0x2d, d_i)
+
+// Store memory expressions.
+#define FOREACH_STORE_MEM_OPCODE(V) \
+ V(I32StoreMem8, 0x2e, i_ii) \
+ V(I32StoreMem16, 0x2f, i_ii) \
+ V(I64StoreMem8, 0x30, l_il) \
+ V(I64StoreMem16, 0x31, l_il) \
+ V(I64StoreMem32, 0x32, l_il) \
+ V(I32StoreMem, 0x33, i_ii) \
+ V(I64StoreMem, 0x34, l_il) \
+ V(F32StoreMem, 0x35, f_if) \
+ V(F64StoreMem, 0x36, d_id)
+
+// Load memory expressions.
+#define FOREACH_MISC_MEM_OPCODE(V) \
+ V(MemorySize, 0x3b, i_v) \
+ V(GrowMemory, 0x39, i_i)
+
+// Expressions with signatures.
+#define FOREACH_SIMPLE_OPCODE(V) \
+ V(I32Add, 0x40, i_ii) \
+ V(I32Sub, 0x41, i_ii) \
+ V(I32Mul, 0x42, i_ii) \
+ V(I32DivS, 0x43, i_ii) \
+ V(I32DivU, 0x44, i_ii) \
+ V(I32RemS, 0x45, i_ii) \
+ V(I32RemU, 0x46, i_ii) \
+ V(I32And, 0x47, i_ii) \
+ V(I32Ior, 0x48, i_ii) \
+ V(I32Xor, 0x49, i_ii) \
+ V(I32Shl, 0x4a, i_ii) \
+ V(I32ShrU, 0x4b, i_ii) \
+ V(I32ShrS, 0x4c, i_ii) \
+ V(I32Eq, 0x4d, i_ii) \
+ V(I32Ne, 0x4e, i_ii) \
+ V(I32LtS, 0x4f, i_ii) \
+ V(I32LeS, 0x50, i_ii) \
+ V(I32LtU, 0x51, i_ii) \
+ V(I32LeU, 0x52, i_ii) \
+ V(I32GtS, 0x53, i_ii) \
+ V(I32GeS, 0x54, i_ii) \
+ V(I32GtU, 0x55, i_ii) \
+ V(I32GeU, 0x56, i_ii) \
+ V(I32Clz, 0x57, i_i) \
+ V(I32Ctz, 0x58, i_i) \
+ V(I32Popcnt, 0x59, i_i) \
+ V(BoolNot, 0x5a, i_i) \
+ V(I64Add, 0x5b, l_ll) \
+ V(I64Sub, 0x5c, l_ll) \
+ V(I64Mul, 0x5d, l_ll) \
+ V(I64DivS, 0x5e, l_ll) \
+ V(I64DivU, 0x5f, l_ll) \
+ V(I64RemS, 0x60, l_ll) \
+ V(I64RemU, 0x61, l_ll) \
+ V(I64And, 0x62, l_ll) \
+ V(I64Ior, 0x63, l_ll) \
+ V(I64Xor, 0x64, l_ll) \
+ V(I64Shl, 0x65, l_ll) \
+ V(I64ShrU, 0x66, l_ll) \
+ V(I64ShrS, 0x67, l_ll) \
+ V(I64Eq, 0x68, i_ll) \
+ V(I64Ne, 0x69, i_ll) \
+ V(I64LtS, 0x6a, i_ll) \
+ V(I64LeS, 0x6b, i_ll) \
+ V(I64LtU, 0x6c, i_ll) \
+ V(I64LeU, 0x6d, i_ll) \
+ V(I64GtS, 0x6e, i_ll) \
+ V(I64GeS, 0x6f, i_ll) \
+ V(I64GtU, 0x70, i_ll) \
+ V(I64GeU, 0x71, i_ll) \
+ V(I64Clz, 0x72, l_l) \
+ V(I64Ctz, 0x73, l_l) \
+ V(I64Popcnt, 0x74, l_l) \
+ V(F32Add, 0x75, f_ff) \
+ V(F32Sub, 0x76, f_ff) \
+ V(F32Mul, 0x77, f_ff) \
+ V(F32Div, 0x78, f_ff) \
+ V(F32Min, 0x79, f_ff) \
+ V(F32Max, 0x7a, f_ff) \
+ V(F32Abs, 0x7b, f_f) \
+ V(F32Neg, 0x7c, f_f) \
+ V(F32CopySign, 0x7d, f_ff) \
+ V(F32Ceil, 0x7e, f_f) \
+ V(F32Floor, 0x7f, f_f) \
+ V(F32Trunc, 0x80, f_f) \
+ V(F32NearestInt, 0x81, f_f) \
+ V(F32Sqrt, 0x82, f_f) \
+ V(F32Eq, 0x83, i_ff) \
+ V(F32Ne, 0x84, i_ff) \
+ V(F32Lt, 0x85, i_ff) \
+ V(F32Le, 0x86, i_ff) \
+ V(F32Gt, 0x87, i_ff) \
+ V(F32Ge, 0x88, i_ff) \
+ V(F64Add, 0x89, d_dd) \
+ V(F64Sub, 0x8a, d_dd) \
+ V(F64Mul, 0x8b, d_dd) \
+ V(F64Div, 0x8c, d_dd) \
+ V(F64Min, 0x8d, d_dd) \
+ V(F64Max, 0x8e, d_dd) \
+ V(F64Abs, 0x8f, d_d) \
+ V(F64Neg, 0x90, d_d) \
+ V(F64CopySign, 0x91, d_dd) \
+ V(F64Ceil, 0x92, d_d) \
+ V(F64Floor, 0x93, d_d) \
+ V(F64Trunc, 0x94, d_d) \
+ V(F64NearestInt, 0x95, d_d) \
+ V(F64Sqrt, 0x96, d_d) \
+ V(F64Eq, 0x97, i_dd) \
+ V(F64Ne, 0x98, i_dd) \
+ V(F64Lt, 0x99, i_dd) \
+ V(F64Le, 0x9a, i_dd) \
+ V(F64Gt, 0x9b, i_dd) \
+ V(F64Ge, 0x9c, i_dd) \
+ V(I32SConvertF32, 0x9d, i_f) \
+ V(I32SConvertF64, 0x9e, i_d) \
+ V(I32UConvertF32, 0x9f, i_f) \
+ V(I32UConvertF64, 0xa0, i_d) \
+ V(I32ConvertI64, 0xa1, i_l) \
+ V(I64SConvertF32, 0xa2, l_f) \
+ V(I64SConvertF64, 0xa3, l_d) \
+ V(I64UConvertF32, 0xa4, l_f) \
+ V(I64UConvertF64, 0xa5, l_d) \
+ V(I64SConvertI32, 0xa6, l_i) \
+ V(I64UConvertI32, 0xa7, l_i) \
+ V(F32SConvertI32, 0xa8, f_i) \
+ V(F32UConvertI32, 0xa9, f_i) \
+ V(F32SConvertI64, 0xaa, f_l) \
+ V(F32UConvertI64, 0xab, f_l) \
+ V(F32ConvertF64, 0xac, f_d) \
+ V(F32ReinterpretI32, 0xad, f_i) \
+ V(F64SConvertI32, 0xae, d_i) \
+ V(F64UConvertI32, 0xaf, d_i) \
+ V(F64SConvertI64, 0xb0, d_l) \
+ V(F64UConvertI64, 0xb1, d_l) \
+ V(F64ConvertF32, 0xb2, d_f) \
+ V(F64ReinterpretI64, 0xb3, d_l) \
+ V(I32ReinterpretF32, 0xb4, i_f) \
+ V(I64ReinterpretF64, 0xb5, l_d)
+
+// All opcodes.
+#define FOREACH_OPCODE(V) \
+ FOREACH_CONTROL_OPCODE(V) \
+ FOREACH_MISC_OPCODE(V) \
+ FOREACH_SIMPLE_OPCODE(V) \
+ FOREACH_STORE_MEM_OPCODE(V) \
+ FOREACH_LOAD_MEM_OPCODE(V) \
+ FOREACH_MISC_MEM_OPCODE(V)
+
+// All signatures.
+#define FOREACH_SIGNATURE(V) \
+ V(i_ii, kAstI32, kAstI32, kAstI32) \
+ V(i_i, kAstI32, kAstI32) \
+ V(i_v, kAstI32) \
+ V(i_ff, kAstI32, kAstF32, kAstF32) \
+ V(i_f, kAstI32, kAstF32) \
+ V(i_dd, kAstI32, kAstF64, kAstF64) \
+ V(i_d, kAstI32, kAstF64) \
+ V(i_l, kAstI32, kAstI64) \
+ V(l_ll, kAstI64, kAstI64, kAstI64) \
+ V(i_ll, kAstI32, kAstI64, kAstI64) \
+ V(l_l, kAstI64, kAstI64) \
+ V(l_i, kAstI64, kAstI32) \
+ V(l_f, kAstI64, kAstF32) \
+ V(l_d, kAstI64, kAstF64) \
+ V(f_ff, kAstF32, kAstF32, kAstF32) \
+ V(f_f, kAstF32, kAstF32) \
+ V(f_d, kAstF32, kAstF64) \
+ V(f_i, kAstF32, kAstI32) \
+ V(f_l, kAstF32, kAstI64) \
+ V(d_dd, kAstF64, kAstF64, kAstF64) \
+ V(d_d, kAstF64, kAstF64) \
+ V(d_f, kAstF64, kAstF32) \
+ V(d_i, kAstF64, kAstI32) \
+ V(d_l, kAstF64, kAstI64) \
+ V(d_id, kAstF64, kAstI32, kAstF64) \
+ V(f_if, kAstF32, kAstI32, kAstF32) \
+ V(l_il, kAstI64, kAstI32, kAstI64)
+
+enum WasmOpcode {
+// Declare expression opcodes.
+#define DECLARE_NAMED_ENUM(name, opcode, sig) kExpr##name = opcode,
+ FOREACH_OPCODE(DECLARE_NAMED_ENUM)
+#undef DECLARE_NAMED_ENUM
+};
+
+// A collection of opcode-related static methods.
+class WasmOpcodes {
+ public:
+ static bool IsSupported(WasmOpcode opcode);
+ static const char* OpcodeName(WasmOpcode opcode);
+ static FunctionSig* Signature(WasmOpcode opcode);
+
+ static byte MemSize(MachineType type) {
+ return 1 << ElementSizeLog2Of(type.representation());
+ }
+
+ static LocalTypeCode LocalTypeCodeFor(LocalType type) {
+ switch (type) {
+ case kAstI32:
+ return kLocalI32;
+ case kAstI64:
+ return kLocalI64;
+ case kAstF32:
+ return kLocalF32;
+ case kAstF64:
+ return kLocalF64;
+ case kAstStmt:
+ return kLocalVoid;
+ default:
+ UNREACHABLE();
+ return kLocalVoid;
+ }
+ }
+
+ static MemTypeCode MemTypeCodeFor(MachineType type) {
+ if (type == MachineType::Int8()) {
+ return kMemI8;
+ } else if (type == MachineType::Uint8()) {
+ return kMemU8;
+ } else if (type == MachineType::Int16()) {
+ return kMemI16;
+ } else if (type == MachineType::Uint16()) {
+ return kMemU16;
+ } else if (type == MachineType::Int32()) {
+ return kMemI32;
+ } else if (type == MachineType::Uint32()) {
+ return kMemU32;
+ } else if (type == MachineType::Int64()) {
+ return kMemI64;
+ } else if (type == MachineType::Uint64()) {
+ return kMemU64;
+ } else if (type == MachineType::Float32()) {
+ return kMemF32;
+ } else if (type == MachineType::Float64()) {
+ return kMemF64;
+ } else {
+ UNREACHABLE();
+ return kMemI32;
+ }
+ }
+
+ static MachineType MachineTypeFor(LocalType type) {
+ switch (type) {
+ case kAstI32:
+ return MachineType::Int32();
+ case kAstI64:
+ return MachineType::Int64();
+ case kAstF32:
+ return MachineType::Float32();
+ case kAstF64:
+ return MachineType::Float64();
+ case kAstStmt:
+ return MachineType::None();
+ default:
+ UNREACHABLE();
+ return MachineType::None();
+ }
+ }
+
+ static LocalType LocalTypeFor(MachineType type) {
+ if (type == MachineType::Int8()) {
+ return kAstI32;
+ } else if (type == MachineType::Uint8()) {
+ return kAstI32;
+ } else if (type == MachineType::Int16()) {
+ return kAstI32;
+ } else if (type == MachineType::Uint16()) {
+ return kAstI32;
+ } else if (type == MachineType::Int32()) {
+ return kAstI32;
+ } else if (type == MachineType::Uint32()) {
+ return kAstI32;
+ } else if (type == MachineType::Int64()) {
+ return kAstI64;
+ } else if (type == MachineType::Uint64()) {
+ return kAstI64;
+ } else if (type == MachineType::Float32()) {
+ return kAstF32;
+ } else if (type == MachineType::Float64()) {
+ return kAstF64;
+ } else {
+ UNREACHABLE();
+ return kAstI32;
+ }
+ }
+
+ // TODO(titzer): remove this method
+ static WasmOpcode LoadStoreOpcodeOf(MachineType type, bool store) {
+ if (type == MachineType::Int8()) {
+ return store ? kExprI32StoreMem8 : kExprI32LoadMem8S;
+ } else if (type == MachineType::Uint8()) {
+ return store ? kExprI32StoreMem8 : kExprI32LoadMem8U;
+ } else if (type == MachineType::Int16()) {
+ return store ? kExprI32StoreMem16 : kExprI32LoadMem16S;
+ } else if (type == MachineType::Uint16()) {
+ return store ? kExprI32StoreMem16 : kExprI32LoadMem16U;
+ } else if (type == MachineType::Int32()) {
+ return store ? kExprI32StoreMem : kExprI32LoadMem;
+ } else if (type == MachineType::Uint32()) {
+ return store ? kExprI32StoreMem : kExprI32LoadMem;
+ } else if (type == MachineType::Int64()) {
+ return store ? kExprI64StoreMem : kExprI64LoadMem;
+ } else if (type == MachineType::Uint64()) {
+ return store ? kExprI64StoreMem : kExprI64LoadMem;
+ } else if (type == MachineType::Float32()) {
+ return store ? kExprF32StoreMem : kExprF32LoadMem;
+ } else if (type == MachineType::Float64()) {
+ return store ? kExprF64StoreMem : kExprF64LoadMem;
+ } else {
+ UNREACHABLE();
+ return kExprNop;
+ }
+ }
+
+ static byte LoadStoreAccessOf(bool with_offset) {
+ return MemoryAccess::OffsetField::encode(with_offset);
+ }
+
+ static char ShortNameOf(LocalType type) {
+ switch (type) {
+ case kAstI32:
+ return 'i';
+ case kAstI64:
+ return 'l';
+ case kAstF32:
+ return 'f';
+ case kAstF64:
+ return 'd';
+ case kAstStmt:
+ return 'v';
+ case kAstEnd:
+ return 'x';
+ default:
+ UNREACHABLE();
+ return '?';
+ }
+ }
+
+ static const char* TypeName(LocalType type) {
+ switch (type) {
+ case kAstI32:
+ return "i32";
+ case kAstI64:
+ return "i64";
+ case kAstF32:
+ return "f32";
+ case kAstF64:
+ return "f64";
+ case kAstStmt:
+ return "<stmt>";
+ case kAstEnd:
+ return "<end>";
+ default:
+ return "<unknown>";
+ }
+ }
+};
+} // namespace wasm
+} // namespace internal
+} // namespace v8
+
+#endif // V8_WASM_OPCODES_H_
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