summaryrefslogtreecommitdiffstats
path: root/third_party/wasm2c/include/wabt/common.h
diff options
context:
space:
mode:
Diffstat (limited to '')
-rw-r--r--third_party/wasm2c/include/wabt/common.h456
1 files changed, 456 insertions, 0 deletions
diff --git a/third_party/wasm2c/include/wabt/common.h b/third_party/wasm2c/include/wabt/common.h
new file mode 100644
index 0000000000..2ae1fa1fe9
--- /dev/null
+++ b/third_party/wasm2c/include/wabt/common.h
@@ -0,0 +1,456 @@
+/*
+ * Copyright 2016 WebAssembly Community Group participants
+ *
+ * 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.
+ */
+
+#ifndef WABT_COMMON_H_
+#define WABT_COMMON_H_
+
+#include <algorithm>
+#include <cassert>
+#include <cstdarg>
+#include <cstddef>
+#include <cstdint>
+#include <cstdio>
+#include <cstdlib>
+#include <cstring>
+#include <memory>
+#include <string>
+#include <string_view>
+#include <type_traits>
+#include <vector>
+
+#include "wabt/config.h"
+
+#include "wabt/base-types.h"
+#include "wabt/result.h"
+#include "wabt/string-format.h"
+#include "wabt/type.h"
+
+#define WABT_FATAL(...) fprintf(stderr, __VA_ARGS__), exit(1)
+#define WABT_ARRAY_SIZE(a) (sizeof(a) / sizeof(a[0]))
+
+#define WABT_USE(x) static_cast<void>(x)
+
+// 64k
+#define WABT_PAGE_SIZE 0x10000
+// # of pages that fit in 32-bit address space
+#define WABT_MAX_PAGES32 0x10000
+// # of pages that fit in 64-bit address space
+#define WABT_MAX_PAGES64 0x1000000000000
+#define WABT_BYTES_TO_PAGES(x) ((x) >> 16)
+#define WABT_ALIGN_UP_TO_PAGE(x) \
+ (((x) + WABT_PAGE_SIZE - 1) & ~(WABT_PAGE_SIZE - 1))
+
+#define WABT_ENUM_COUNT(name) \
+ (static_cast<int>(name::Last) - static_cast<int>(name::First) + 1)
+
+#define WABT_DISALLOW_COPY_AND_ASSIGN(type) \
+ type(const type&) = delete; \
+ type& operator=(const type&) = delete;
+
+#if WITH_EXCEPTIONS
+#define WABT_TRY try {
+#define WABT_CATCH_BAD_ALLOC \
+ } \
+ catch (std::bad_alloc&) { \
+ }
+#define WABT_CATCH_BAD_ALLOC_AND_EXIT \
+ } \
+ catch (std::bad_alloc&) { \
+ WABT_FATAL("Memory allocation failure.\n"); \
+ }
+#else
+#define WABT_TRY
+#define WABT_CATCH_BAD_ALLOC
+#define WABT_CATCH_BAD_ALLOC_AND_EXIT
+#endif
+
+#define PRIindex "u"
+#define PRIaddress PRIu64
+#define PRIoffset PRIzx
+
+namespace wabt {
+inline void MemcpyEndianAware(void* dst,
+ const void* src,
+ size_t dsize,
+ size_t ssize,
+ size_t doff,
+ size_t soff,
+ size_t len) {
+#if WABT_BIG_ENDIAN
+ memcpy(static_cast<char*>(dst) + (dsize) - (len) - (doff),
+ static_cast<const char*>(src) + (ssize) - (len) - (soff), (len));
+#else
+ memcpy(static_cast<char*>(dst) + (doff),
+ static_cast<const char*>(src) + (soff), (len));
+#endif
+}
+}
+
+struct v128 {
+ v128() = default;
+ v128(uint32_t x0, uint32_t x1, uint32_t x2, uint32_t x3) {
+ set_u32(0, x0);
+ set_u32(1, x1);
+ set_u32(2, x2);
+ set_u32(3, x3);
+ }
+
+ bool operator==(const v128& other) const {
+ return std::equal(std::begin(v), std::end(v), std::begin(other.v));
+ }
+ bool operator!=(const v128& other) const { return !(*this == other); }
+
+ uint8_t u8(int lane) const { return To<uint8_t>(lane); }
+ uint16_t u16(int lane) const { return To<uint16_t>(lane); }
+ uint32_t u32(int lane) const { return To<uint32_t>(lane); }
+ uint64_t u64(int lane) const { return To<uint64_t>(lane); }
+ uint32_t f32_bits(int lane) const { return To<uint32_t>(lane); }
+ uint64_t f64_bits(int lane) const { return To<uint64_t>(lane); }
+
+ void set_u8(int lane, uint8_t x) { return From<uint8_t>(lane, x); }
+ void set_u16(int lane, uint16_t x) { return From<uint16_t>(lane, x); }
+ void set_u32(int lane, uint32_t x) { return From<uint32_t>(lane, x); }
+ void set_u64(int lane, uint64_t x) { return From<uint64_t>(lane, x); }
+ void set_f32_bits(int lane, uint32_t x) { return From<uint32_t>(lane, x); }
+ void set_f64_bits(int lane, uint64_t x) { return From<uint64_t>(lane, x); }
+
+ bool is_zero() const {
+ return std::all_of(std::begin(v), std::end(v),
+ [](uint8_t x) { return x == 0; });
+ }
+ void set_zero() { std::fill(std::begin(v), std::end(v), 0); }
+
+ template <typename T>
+ T To(int lane) const {
+ static_assert(sizeof(T) <= sizeof(v), "Invalid cast!");
+ assert((lane + 1) * sizeof(T) <= sizeof(v));
+ T result;
+ wabt::MemcpyEndianAware(&result, v, sizeof(result), sizeof(v), 0,
+ lane * sizeof(T), sizeof(result));
+ return result;
+ }
+
+ template <typename T>
+ void From(int lane, T data) {
+ static_assert(sizeof(T) <= sizeof(v), "Invalid cast!");
+ assert((lane + 1) * sizeof(T) <= sizeof(v));
+ wabt::MemcpyEndianAware(v, &data, sizeof(v), sizeof(data), lane * sizeof(T),
+ 0, sizeof(data));
+ }
+
+ uint8_t v[16];
+};
+
+namespace wabt {
+
+template <typename Dst, typename Src>
+Dst WABT_VECTORCALL Bitcast(Src&& value) {
+ static_assert(sizeof(Src) == sizeof(Dst), "Bitcast sizes must match.");
+ Dst result;
+ memcpy(&result, &value, sizeof(result));
+ return result;
+}
+
+template <typename T>
+void ZeroMemory(T& v) {
+ WABT_STATIC_ASSERT(std::is_pod<T>::value);
+ memset(&v, 0, sizeof(v));
+}
+
+// Placement construct
+template <typename T, typename... Args>
+void Construct(T& placement, Args&&... args) {
+ new (&placement) T(std::forward<Args>(args)...);
+}
+
+// Placement destruct
+template <typename T>
+void Destruct(T& placement) {
+ placement.~T();
+}
+
+enum class LabelType {
+ Func,
+ InitExpr,
+ Block,
+ Loop,
+ If,
+ Else,
+ Try,
+ Catch,
+
+ First = Func,
+ Last = Catch,
+};
+constexpr int kLabelTypeCount = WABT_ENUM_COUNT(LabelType);
+
+struct Location {
+ enum class Type {
+ Text,
+ Binary,
+ };
+
+ Location() : line(0), first_column(0), last_column(0) {}
+ Location(std::string_view filename,
+ int line,
+ int first_column,
+ int last_column)
+ : filename(filename),
+ line(line),
+ first_column(first_column),
+ last_column(last_column) {}
+ explicit Location(size_t offset) : offset(offset) {}
+
+ std::string_view filename;
+ union {
+ // For text files.
+ struct {
+ int line;
+ int first_column;
+ int last_column;
+ };
+ // For binary files.
+ struct {
+ size_t offset;
+ };
+ };
+};
+
+enum class SegmentKind {
+ Active,
+ Passive,
+ Declared,
+};
+
+// Used in test asserts for special expected values "nan:canonical" and
+// "nan:arithmetic"
+enum class ExpectedNan {
+ None,
+ Canonical,
+ Arithmetic,
+};
+
+// Matches binary format, do not change.
+enum SegmentFlags : uint8_t {
+ SegFlagsNone = 0,
+ SegPassive = 1, // bit 0: Is passive
+ SegExplicitIndex = 2, // bit 1: Has explict index (Implies table 0 if absent)
+ SegDeclared = 3, // Only used for declared segments
+ SegUseElemExprs = 4, // bit 2: Is elemexpr (Or else index sequence)
+
+ SegFlagMax = (SegUseElemExprs << 1) - 1, // All bits set.
+};
+
+enum class RelocType {
+ FuncIndexLEB = 0, // e.g. Immediate of call instruction
+ TableIndexSLEB = 1, // e.g. Loading address of function
+ TableIndexI32 = 2, // e.g. Function address in DATA
+ MemoryAddressLEB = 3, // e.g. Memory address in load/store offset immediate
+ MemoryAddressSLEB = 4, // e.g. Memory address in i32.const
+ MemoryAddressI32 = 5, // e.g. Memory address in DATA
+ TypeIndexLEB = 6, // e.g. Immediate type in call_indirect
+ GlobalIndexLEB = 7, // e.g. Immediate of global.get inst
+ FunctionOffsetI32 = 8, // e.g. Code offset in DWARF metadata
+ SectionOffsetI32 = 9, // e.g. Section offset in DWARF metadata
+ TagIndexLEB = 10, // Used in throw instructions
+ MemoryAddressRelSLEB = 11, // In PIC code, addr relative to __memory_base
+ TableIndexRelSLEB = 12, // In PIC code, table index relative to __table_base
+ GlobalIndexI32 = 13, // e.g. Global index in data (e.g. DWARF)
+ MemoryAddressLEB64 = 14, // Memory64: Like MemoryAddressLEB
+ MemoryAddressSLEB64 = 15, // Memory64: Like MemoryAddressSLEB
+ MemoryAddressI64 = 16, // Memory64: Like MemoryAddressI32
+ MemoryAddressRelSLEB64 = 17, // Memory64: Like MemoryAddressRelSLEB
+ TableIndexSLEB64 = 18, // Memory64: Like TableIndexSLEB
+ TableIndexI64 = 19, // Memory64: Like TableIndexI32
+ TableNumberLEB = 20, // e.g. Immediate of table.get
+ MemoryAddressTLSSLEB = 21, // Address relative to __tls_base
+ MemoryAddressTLSI32 = 22, // Address relative to __tls_base
+
+ First = FuncIndexLEB,
+ Last = MemoryAddressTLSI32,
+};
+constexpr int kRelocTypeCount = WABT_ENUM_COUNT(RelocType);
+
+struct Reloc {
+ Reloc(RelocType, size_t offset, Index index, int32_t addend = 0);
+
+ RelocType type;
+ size_t offset;
+ Index index;
+ int32_t addend;
+};
+
+enum class LinkingEntryType {
+ SegmentInfo = 5,
+ InitFunctions = 6,
+ ComdatInfo = 7,
+ SymbolTable = 8,
+};
+
+enum class DylinkEntryType {
+ MemInfo = 1,
+ Needed = 2,
+ ExportInfo = 3,
+ ImportInfo = 4,
+};
+
+enum class SymbolType {
+ Function = 0,
+ Data = 1,
+ Global = 2,
+ Section = 3,
+ Tag = 4,
+ Table = 5,
+};
+
+enum class ComdatType {
+ Data = 0x0,
+ Function = 0x1,
+};
+
+#define WABT_SYMBOL_MASK_VISIBILITY 0x4
+#define WABT_SYMBOL_MASK_BINDING 0x3
+#define WABT_SYMBOL_FLAG_UNDEFINED 0x10
+#define WABT_SYMBOL_FLAG_EXPORTED 0x20
+#define WABT_SYMBOL_FLAG_EXPLICIT_NAME 0x40
+#define WABT_SYMBOL_FLAG_NO_STRIP 0x80
+#define WABT_SYMBOL_FLAG_TLS 0x100
+#define WABT_SYMBOL_FLAG_MAX 0x1ff
+
+#define WABT_SEGMENT_FLAG_STRINGS 0x1
+#define WABT_SEGMENT_FLAG_TLS 0x2
+#define WABT_SEGMENT_FLAG_MAX 0xff
+
+enum class SymbolVisibility {
+ Default = 0,
+ Hidden = 4,
+};
+
+enum class SymbolBinding {
+ Global = 0,
+ Weak = 1,
+ Local = 2,
+};
+
+/* matches binary format, do not change */
+enum class ExternalKind {
+ Func = 0,
+ Table = 1,
+ Memory = 2,
+ Global = 3,
+ Tag = 4,
+
+ First = Func,
+ Last = Tag,
+};
+constexpr int kExternalKindCount = WABT_ENUM_COUNT(ExternalKind);
+
+struct Limits {
+ Limits() = default;
+ explicit Limits(uint64_t initial) : initial(initial) {}
+ Limits(uint64_t initial, uint64_t max)
+ : initial(initial), max(max), has_max(true) {}
+ Limits(uint64_t initial, uint64_t max, bool is_shared)
+ : initial(initial), max(max), has_max(true), is_shared(is_shared) {}
+ Limits(uint64_t initial, uint64_t max, bool is_shared, bool is_64)
+ : initial(initial),
+ max(max),
+ has_max(true),
+ is_shared(is_shared),
+ is_64(is_64) {}
+ Type IndexType() const { return is_64 ? Type::I64 : Type::I32; }
+
+ uint64_t initial = 0;
+ uint64_t max = 0;
+ bool has_max = false;
+ bool is_shared = false;
+ bool is_64 = false;
+};
+
+enum { WABT_USE_NATURAL_ALIGNMENT = 0xFFFFFFFFFFFFFFFF };
+
+Result ReadFile(std::string_view filename, std::vector<uint8_t>* out_data);
+
+void InitStdio();
+
+/* external kind */
+
+extern const char* g_kind_name[];
+
+static inline const char* GetKindName(ExternalKind kind) {
+ return static_cast<size_t>(kind) < kExternalKindCount
+ ? g_kind_name[static_cast<size_t>(kind)]
+ : "<error_kind>";
+}
+
+/* reloc */
+
+extern const char* g_reloc_type_name[];
+
+static inline const char* GetRelocTypeName(RelocType reloc) {
+ return static_cast<size_t>(reloc) < kRelocTypeCount
+ ? g_reloc_type_name[static_cast<size_t>(reloc)]
+ : "<error_reloc_type>";
+}
+
+/* symbol */
+
+static inline const char* GetSymbolTypeName(SymbolType type) {
+ switch (type) {
+ case SymbolType::Function:
+ return "func";
+ case SymbolType::Global:
+ return "global";
+ case SymbolType::Data:
+ return "data";
+ case SymbolType::Section:
+ return "section";
+ case SymbolType::Tag:
+ return "tag";
+ case SymbolType::Table:
+ return "table";
+ default:
+ return "<error_symbol_type>";
+ }
+}
+
+template <typename T>
+void ConvertBackslashToSlash(T begin, T end) {
+ std::replace(begin, end, '\\', '/');
+}
+
+inline void ConvertBackslashToSlash(char* s, size_t length) {
+ ConvertBackslashToSlash(s, s + length);
+}
+
+inline void ConvertBackslashToSlash(char* s) {
+ ConvertBackslashToSlash(s, strlen(s));
+}
+
+inline void ConvertBackslashToSlash(std::string* s) {
+ ConvertBackslashToSlash(s->begin(), s->end());
+}
+
+inline void SwapBytesSized(void* addr, size_t size) {
+ auto bytes = static_cast<uint8_t*>(addr);
+ for (size_t i = 0; i < size / 2; i++) {
+ std::swap(bytes[i], bytes[size - 1 - i]);
+ }
+}
+
+} // namespace wabt
+
+#endif // WABT_COMMON_H_
generated by cgit v1.2.3 (git 2.39.1) at 2024-07-16 10:44:44 +0000