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author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-19 00:47:55 +0000 |
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committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-19 00:47:55 +0000 |
commit | 26a029d407be480d791972afb5975cf62c9360a6 (patch) | |
tree | f435a8308119effd964b339f76abb83a57c29483 /js/src/wasm/WasmBCStk.h | |
parent | Initial commit. (diff) | |
download | firefox-26a029d407be480d791972afb5975cf62c9360a6.tar.xz firefox-26a029d407be480d791972afb5975cf62c9360a6.zip |
Adding upstream version 124.0.1.upstream/124.0.1
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'js/src/wasm/WasmBCStk.h')
-rw-r--r-- | js/src/wasm/WasmBCStk.h | 345 |
1 files changed, 345 insertions, 0 deletions
diff --git a/js/src/wasm/WasmBCStk.h b/js/src/wasm/WasmBCStk.h new file mode 100644 index 0000000000..330e8abd06 --- /dev/null +++ b/js/src/wasm/WasmBCStk.h @@ -0,0 +1,345 @@ +/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- + * vim: set ts=8 sts=2 et sw=2 tw=80: + * + * Copyright 2016 Mozilla Foundation + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ + +// This is an INTERNAL header for Wasm baseline compiler: Wasm value stack. + +#ifndef wasm_wasm_baseline_stk_h +#define wasm_wasm_baseline_stk_h + +#include "wasm/WasmBCDefs.h" +#include "wasm/WasmBCRegDefs.h" + +namespace js { +namespace wasm { + +// Value stack: stack elements + +struct Stk { + private: + Stk() : kind_(Unknown), i64val_(0) {} + + public: + enum Kind { + // The Mem opcodes are all clustered at the beginning to + // allow for a quick test within sync(). + MemI32, // 32-bit integer stack value ("offs") + MemI64, // 64-bit integer stack value ("offs") + MemF32, // 32-bit floating stack value ("offs") + MemF64, // 64-bit floating stack value ("offs") +#ifdef ENABLE_WASM_SIMD + MemV128, // 128-bit vector stack value ("offs") +#endif + MemRef, // reftype (pointer wide) stack value ("offs") + + // The Local opcodes follow the Mem opcodes for a similar + // quick test within hasLocal(). + LocalI32, // Local int32 var ("slot") + LocalI64, // Local int64 var ("slot") + LocalF32, // Local float32 var ("slot") + LocalF64, // Local double var ("slot") +#ifdef ENABLE_WASM_SIMD + LocalV128, // Local v128 var ("slot") +#endif + LocalRef, // Local reftype (pointer wide) var ("slot") + + RegisterI32, // 32-bit integer register ("i32reg") + RegisterI64, // 64-bit integer register ("i64reg") + RegisterF32, // 32-bit floating register ("f32reg") + RegisterF64, // 64-bit floating register ("f64reg") +#ifdef ENABLE_WASM_SIMD + RegisterV128, // 128-bit vector register ("v128reg") +#endif + RegisterRef, // reftype (pointer wide) register ("refReg") + + ConstI32, // 32-bit integer constant ("i32val") + ConstI64, // 64-bit integer constant ("i64val") + ConstF32, // 32-bit floating constant ("f32val") + ConstF64, // 64-bit floating constant ("f64val") +#ifdef ENABLE_WASM_SIMD + ConstV128, // 128-bit vector constant ("v128val") +#endif + ConstRef, // reftype (pointer wide) constant ("refval") + + Unknown, + }; + + Kind kind_; + + static const Kind MemLast = MemRef; + static const Kind LocalLast = LocalRef; + + union { + RegI32 i32reg_; + RegI64 i64reg_; + RegRef refReg_; + RegF32 f32reg_; + RegF64 f64reg_; +#ifdef ENABLE_WASM_SIMD + RegV128 v128reg_; +#endif + int32_t i32val_; + int64_t i64val_; + intptr_t refval_; + float f32val_; + double f64val_; +#ifdef ENABLE_WASM_SIMD + V128 v128val_; +#endif + uint32_t slot_; + uint32_t offs_; + }; + + explicit Stk(RegI32 r) : kind_(RegisterI32), i32reg_(r) {} + explicit Stk(RegI64 r) : kind_(RegisterI64), i64reg_(r) {} + explicit Stk(RegRef r) : kind_(RegisterRef), refReg_(r) {} + explicit Stk(RegF32 r) : kind_(RegisterF32), f32reg_(r) {} + explicit Stk(RegF64 r) : kind_(RegisterF64), f64reg_(r) {} +#ifdef ENABLE_WASM_SIMD + explicit Stk(RegV128 r) : kind_(RegisterV128), v128reg_(r) {} +#endif + explicit Stk(int32_t v) : kind_(ConstI32), i32val_(v) {} + explicit Stk(uint32_t v) : kind_(ConstI32), i32val_(int32_t(v)) {} + explicit Stk(int64_t v) : kind_(ConstI64), i64val_(v) {} + explicit Stk(float v) : kind_(ConstF32), f32val_(v) {} + explicit Stk(double v) : kind_(ConstF64), f64val_(v) {} +#ifdef ENABLE_WASM_SIMD + explicit Stk(V128 v) : kind_(ConstV128), v128val_(v) {} +#endif + explicit Stk(Kind k, uint32_t v) : kind_(k), slot_(v) { + MOZ_ASSERT(k > MemLast && k <= LocalLast); + } + static Stk StkRef(intptr_t v) { + Stk s; + s.kind_ = ConstRef; + s.refval_ = v; + return s; + } + static Stk StackResult(ValType type, uint32_t offs) { + Kind k; + switch (type.kind()) { + case ValType::I32: + k = Stk::MemI32; + break; + case ValType::I64: + k = Stk::MemI64; + break; + case ValType::V128: +#ifdef ENABLE_WASM_SIMD + k = Stk::MemV128; + break; +#else + MOZ_CRASH("No SIMD"); +#endif + case ValType::F32: + k = Stk::MemF32; + break; + case ValType::F64: + k = Stk::MemF64; + break; + case ValType::Ref: + k = Stk::MemRef; + break; + } + Stk s; + s.setOffs(k, offs); + return s; + } + + void setOffs(Kind k, uint32_t v) { + MOZ_ASSERT(k <= MemLast); + kind_ = k; + offs_ = v; + } + + Kind kind() const { return kind_; } + bool isMem() const { return kind_ <= MemLast; } + + RegI32 i32reg() const { + MOZ_ASSERT(kind_ == RegisterI32); + return i32reg_; + } + RegI64 i64reg() const { + MOZ_ASSERT(kind_ == RegisterI64); + return i64reg_; + } + RegRef refReg() const { + MOZ_ASSERT(kind_ == RegisterRef); + return refReg_; + } + RegF32 f32reg() const { + MOZ_ASSERT(kind_ == RegisterF32); + return f32reg_; + } + RegF64 f64reg() const { + MOZ_ASSERT(kind_ == RegisterF64); + return f64reg_; + } +#ifdef ENABLE_WASM_SIMD + RegV128 v128reg() const { + MOZ_ASSERT(kind_ == RegisterV128); + return v128reg_; + } +#endif + int32_t i32val() const { + MOZ_ASSERT(kind_ == ConstI32); + return i32val_; + } + int64_t i64val() const { + MOZ_ASSERT(kind_ == ConstI64); + return i64val_; + } + intptr_t refval() const { + MOZ_ASSERT(kind_ == ConstRef); + return refval_; + } + + // For these two, use an out-param instead of simply returning, to + // use the normal stack and not the x87 FP stack (which has effect on + // NaNs with the signaling bit set). + + void f32val(float* out) const { + MOZ_ASSERT(kind_ == ConstF32); + *out = f32val_; + } + void f64val(double* out) const { + MOZ_ASSERT(kind_ == ConstF64); + *out = f64val_; + } + +#ifdef ENABLE_WASM_SIMD + // For SIMD, do the same as for floats since we're using float registers to + // hold vectors; this is just conservative. + void v128val(V128* out) const { + MOZ_ASSERT(kind_ == ConstV128); + *out = v128val_; + } +#endif + + uint32_t slot() const { + MOZ_ASSERT(kind_ > MemLast && kind_ <= LocalLast); + return slot_; + } + uint32_t offs() const { + MOZ_ASSERT(isMem()); + return offs_; + } + +#ifdef DEBUG + // Print a stack element (Stk) to stderr. Skip the trailing \n. Printing + // of the actual contents of each stack element (see case ConstI32) can be + // filled in on demand -- even printing just the element `kind_` fields can + // be very useful. + void showStackElem() const { + switch (kind_) { + case MemI32: + fprintf(stderr, "MemI32()"); + break; + case MemI64: + fprintf(stderr, "MemI64()"); + break; + case MemF32: + fprintf(stderr, "MemF32()"); + break; + case MemF64: + fprintf(stderr, "MemF64()"); + break; +# ifdef ENABLE_WASM_SIMD + case MemV128: + fprintf(stderr, "MemV128()"); + break; +# endif + case MemRef: + fprintf(stderr, "MemRef()"); + break; + case LocalI32: + fprintf(stderr, "LocalI32()"); + break; + case LocalI64: + fprintf(stderr, "LocalI64()"); + break; + case LocalF32: + fprintf(stderr, "LocalF32()"); + break; + case LocalF64: + fprintf(stderr, "LocalF64()"); + break; +# ifdef ENABLE_WASM_SIMD + case LocalV128: + fprintf(stderr, "LocalV128()"); + break; +# endif + case LocalRef: + fprintf(stderr, "LocalRef()"); + break; + case RegisterI32: + fprintf(stderr, "RegisterI32()"); + break; + case RegisterI64: + fprintf(stderr, "RegisterI64()"); + break; + case RegisterF32: + fprintf(stderr, "RegisterF32()"); + break; + case RegisterF64: + fprintf(stderr, "RegisterF64()"); + break; +# ifdef ENABLE_WASM_SIMD + case RegisterV128: + fprintf(stderr, "RegisterV128()"); + break; +# endif + case RegisterRef: + fprintf(stderr, "RegisterRef()"); + break; + case ConstI32: + fprintf(stderr, "ConstI32(%d)", (int)i32val_); + break; + case ConstI64: + fprintf(stderr, "ConstI64()"); + break; + case ConstF32: + fprintf(stderr, "ConstF32()"); + break; + case ConstF64: + fprintf(stderr, "ConstF64()"); + break; +# ifdef ENABLE_WASM_SIMD + case ConstV128: + fprintf(stderr, "ConstV128()"); + break; +# endif + case ConstRef: + fprintf(stderr, "ConstRef()"); + break; + case Unknown: + fprintf(stderr, "Unknown()"); + break; + default: + fprintf(stderr, "!! Stk::showStackElem !!"); + break; + } + } +#endif +}; + +using StkVector = Vector<Stk, 0, SystemAllocPolicy>; + +} // namespace wasm +} // namespace js + +#endif // wasm_wasm_baseline_stk_h |