bgfx/3rdparty/spirv-headers/tools/buildHeaders/jsonToSpirv.cpp
Бранимир Караџић ac29dccc6a Added spirv-cross.
2019-01-09 19:23:47 -08:00

438 lines
19 KiB
C++

// Copyright (c) 2014-2019 The Khronos Group Inc.
//
// Permission is hereby granted, free of charge, to any person obtaining a copy
// of this software and/or associated documentation files (the "Materials"),
// to deal in the Materials without restriction, including without limitation
// the rights to use, copy, modify, merge, publish, distribute, sublicense,
// and/or sell copies of the Materials, and to permit persons to whom the
// Materials are furnished to do so, subject to the following conditions:
//
// The above copyright notice and this permission notice shall be included in
// all copies or substantial portions of the Materials.
//
// MODIFICATIONS TO THIS FILE MAY MEAN IT NO LONGER ACCURATELY REFLECTS KHRONOS
// STANDARDS. THE UNMODIFIED, NORMATIVE VERSIONS OF KHRONOS SPECIFICATIONS AND
// HEADER INFORMATION ARE LOCATED AT https://www.khronos.org/registry/
//
// THE MATERIALS ARE PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
// OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
// THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
// FROM,OUT OF OR IN CONNECTION WITH THE MATERIALS OR THE USE OR OTHER DEALINGS
// IN THE MATERIALS.
#include <assert.h>
#include <string.h>
#include <algorithm>
#include <iostream>
#include <unordered_map>
#include <utility>
#include <fstream>
#include "jsoncpp/dist/json/json.h"
#include "jsonToSpirv.h"
namespace spv {
// The set of objects that hold all the instruction/operand
// parameterization information.
InstructionValues InstructionDesc;
// Note: There is no entry for OperandOpcode. Use InstructionDesc instead.
EnumDefinition OperandClassParams[OperandOpcode];
EnumValues SourceLanguageParams;
EnumValues ExecutionModelParams;
EnumValues AddressingParams;
EnumValues MemoryParams;
EnumValues ExecutionModeParams;
EnumValues StorageParams;
EnumValues SamplerAddressingModeParams;
EnumValues SamplerFilterModeParams;
EnumValues ImageFormatParams;
EnumValues ImageChannelOrderParams;
EnumValues ImageChannelDataTypeParams;
EnumValues ImageOperandsParams;
EnumValues FPFastMathParams;
EnumValues FPRoundingModeParams;
EnumValues LinkageTypeParams;
EnumValues DecorationParams;
EnumValues BuiltInParams;
EnumValues DimensionalityParams;
EnumValues FuncParamAttrParams;
EnumValues AccessQualifierParams;
EnumValues GroupOperationParams;
EnumValues LoopControlParams;
EnumValues SelectionControlParams;
EnumValues FunctionControlParams;
EnumValues MemorySemanticsParams;
EnumValues MemoryAccessParams;
EnumValues ScopeParams;
EnumValues KernelEnqueueFlagsParams;
EnumValues KernelProfilingInfoParams;
EnumValues CapabilityParams;
std::pair<bool, std::string> ReadFile(const std::string& path)
{
std::ifstream fstream(path, std::ios::in);
if (fstream) {
std::string contents;
fstream.seekg(0, std::ios::end);
contents.reserve((unsigned int)fstream.tellg());
fstream.seekg(0, std::ios::beg);
contents.assign((std::istreambuf_iterator<char>(fstream)),
std::istreambuf_iterator<char>());
return std::make_pair(true, contents);
}
return std::make_pair(false, "");
}
struct ClassOptionality {
OperandClass type;
bool optional;
};
// Converts the |operandKind| and |quantifier| pair used to describe operands
// in the JSON grammar to OperandClass and optionality used in this repo.
ClassOptionality ToOperandClassAndOptionality(const std::string& operandKind, const std::string& quantifier)
{
assert(quantifier.empty() || quantifier == "?" || quantifier == "*");
if (operandKind == "IdRef") {
if (quantifier.empty())
return {OperandId, false};
else if (quantifier == "?")
return {OperandId, true};
else
return {OperandVariableIds, false};
} else if (operandKind == "LiteralInteger") {
if (quantifier.empty())
return {OperandLiteralNumber, false};
if (quantifier == "?")
return {OperandOptionalLiteral, true};
else
return {OperandVariableLiterals, false};
} else if (operandKind == "LiteralString") {
if (quantifier.empty())
return {OperandLiteralString, false};
else if (quantifier == "?")
return {OperandLiteralString, true};
else {
assert(0 && "this case should not exist");
return {OperandNone, false};
}
} else if (operandKind == "PairLiteralIntegerIdRef") {
// Used by OpSwitch in the grammar
return {OperandVariableLiteralId, false};
} else if (operandKind == "PairIdRefLiteralInteger") {
// Used by OpGroupMemberDecorate in the grammar
return {OperandVariableIdLiteral, false};
} else if (operandKind == "PairIdRefIdRef") {
// Used by OpPhi in the grammar
return {OperandVariableIds, false};
} else {
OperandClass type = OperandNone;
if (operandKind == "IdMemorySemantics" || operandKind == "MemorySemantics") {
type = OperandMemorySemantics;
} else if (operandKind == "IdScope" || operandKind == "Scope") {
type = OperandScope;
} else if (operandKind == "LiteralExtInstInteger") {
type = OperandLiteralNumber;
} else if (operandKind == "LiteralSpecConstantOpInteger") {
type = OperandLiteralNumber;
} else if (operandKind == "LiteralContextDependentNumber") {
type = OperandVariableLiterals;
} else if (operandKind == "SourceLanguage") {
type = OperandSource;
} else if (operandKind == "ExecutionModel") {
type = OperandExecutionModel;
} else if (operandKind == "AddressingModel") {
type = OperandAddressing;
} else if (operandKind == "MemoryModel") {
type = OperandMemory;
} else if (operandKind == "ExecutionMode") {
type = OperandExecutionMode;
} else if (operandKind == "StorageClass") {
type = OperandStorage;
} else if (operandKind == "Dim") {
type = OperandDimensionality;
} else if (operandKind == "SamplerAddressingMode") {
type = OperandSamplerAddressingMode;
} else if (operandKind == "SamplerFilterMode") {
type = OperandSamplerFilterMode;
} else if (operandKind == "ImageFormat") {
type = OperandSamplerImageFormat;
} else if (operandKind == "ImageChannelOrder") {
type = OperandImageChannelOrder;
} else if (operandKind == "ImageChannelDataType") {
type = OperandImageChannelDataType;
} else if (operandKind == "FPRoundingMode") {
type = OperandFPRoundingMode;
} else if (operandKind == "LinkageType") {
type = OperandLinkageType;
} else if (operandKind == "AccessQualifier") {
type = OperandAccessQualifier;
} else if (operandKind == "FunctionParameterAttribute") {
type = OperandFuncParamAttr;
} else if (operandKind == "Decoration") {
type = OperandDecoration;
} else if (operandKind == "BuiltIn") {
type = OperandBuiltIn;
} else if (operandKind == "GroupOperation") {
type = OperandGroupOperation;
} else if (operandKind == "KernelEnqueueFlags") {
type = OperandKernelEnqueueFlags;
} else if (operandKind == "KernelProfilingInfo") {
type = OperandKernelProfilingInfo;
} else if (operandKind == "Capability") {
type = OperandCapability;
} else if (operandKind == "ImageOperands") {
type = OperandImageOperands;
} else if (operandKind == "FPFastMathMode") {
type = OperandFPFastMath;
} else if (operandKind == "SelectionControl") {
type = OperandSelect;
} else if (operandKind == "LoopControl") {
type = OperandLoop;
} else if (operandKind == "FunctionControl") {
type = OperandFunction;
} else if (operandKind == "MemoryAccess") {
type = OperandMemoryAccess;
}
if (type == OperandNone) {
std::cerr << "Unhandled operand kind found: " << operandKind << std::endl;
exit(1);
}
return {type, !quantifier.empty()};
}
}
bool IsTypeOrResultId(const std::string& str, bool* isType, bool* isResult)
{
if (str == "IdResultType")
return *isType = true;
if (str == "IdResult")
return *isResult = true;
return false;
}
// Given a number string, returns the position of the only bits set in the number.
// So it requires the number is a power of two.
unsigned int NumberStringToBit(const std::string& str)
{
char* parseEnd;
unsigned int value = (unsigned int)std::strtol(str.c_str(), &parseEnd, 16);
assert(!(value & (value - 1)) && "input number is not a power of 2");
unsigned int bit = 0;
for (; value; value >>= 1) ++bit;
return bit;
}
void jsonToSpirv(const std::string& jsonPath)
{
// only do this once.
static bool initialized = false;
if (initialized)
return;
initialized = true;
// Read the JSON grammar file.
bool fileReadOk = false;
std::string content;
std::tie(fileReadOk, content) = ReadFile(jsonPath);
if (!fileReadOk) {
std::cerr << "Failed to read JSON grammar file: "
<< jsonPath << std::endl;
exit(1);
}
// Decode the JSON grammar file.
Json::Reader reader;
Json::Value root;
if (!reader.parse(content, root)) {
std::cerr << "Failed to parse JSON grammar:\n"
<< reader.getFormattedErrorMessages();
exit(1);
}
// Layouts for all instructions.
// A lambda for returning capabilities from a JSON object as strings.
const auto getCaps = [](const Json::Value& object) {
EnumCaps result;
const auto& caps = object["capabilities"];
if (!caps.empty()) {
assert(caps.isArray());
for (const auto& cap : caps) {
result.emplace_back(cap.asString());
}
}
return result;
};
// A lambda for returning extensions from a JSON object as strings.
const auto getExts = [](const Json::Value& object) {
Extensions result;
const auto& exts = object["extensions"];
if (!exts.empty()) {
assert(exts.isArray());
for (const auto& ext : exts) {
result.emplace_back(ext.asString());
}
}
return result;
};
const Json::Value insts = root["instructions"];
for (const auto& inst : insts) {
const unsigned int opcode = inst["opcode"].asUInt();
const std::string name = inst["opname"].asString();
EnumCaps caps = getCaps(inst);
std::string version = inst["version"].asString();
Extensions exts = getExts(inst);
OperandParameters operands;
bool defResultId = false;
bool defTypeId = false;
for (const auto& operand : inst["operands"]) {
const std::string kind = operand["kind"].asString();
const std::string quantifier = operand.get("quantifier", "").asString();
const std::string doc = operand.get("name", "").asString();
if (!IsTypeOrResultId(kind, &defTypeId, &defResultId)) {
const auto p = ToOperandClassAndOptionality(kind, quantifier);
operands.push(p.type, doc, p.optional);
}
}
InstructionDesc.emplace_back(
std::move(EnumValue(opcode, name,
std::move(caps), std::move(version), std::move(exts),
std::move(operands))),
defTypeId, defResultId);
}
// Specific additional context-dependent operands
// Populate dest with EnumValue objects constructed from source.
const auto populateEnumValues = [&getCaps,&getExts](EnumValues* dest, const Json::Value& source, bool bitEnum) {
// A lambda for determining the numeric value to be used for a given
// enumerant in JSON form, and whether that value is a 0 in a bitfield.
auto getValue = [&bitEnum](const Json::Value& enumerant) {
std::pair<unsigned, bool> result{0u,false};
if (!bitEnum) {
result.first = enumerant["value"].asUInt();
} else {
const unsigned int bit = NumberStringToBit(enumerant["value"].asString());
if (bit == 0)
result.second = true;
else
result.first = bit - 1; // This is the *shift* amount.
}
return result;
};
for (const auto& enumerant : source["enumerants"]) {
unsigned value;
bool skip_zero_in_bitfield;
std::tie(value, skip_zero_in_bitfield) = getValue(enumerant);
if (skip_zero_in_bitfield)
continue;
EnumCaps caps(getCaps(enumerant));
std::string version = enumerant["version"].asString();
Extensions exts(getExts(enumerant));
OperandParameters params;
const Json::Value& paramsJson = enumerant["parameters"];
if (!paramsJson.empty()) { // This enumerant has parameters.
assert(paramsJson.isArray());
for (const auto& param : paramsJson) {
const std::string kind = param["kind"].asString();
const std::string doc = param.get("name", "").asString();
const auto p = ToOperandClassAndOptionality(kind, ""); // All parameters are required!
params.push(p.type, doc);
}
}
dest->emplace_back(
value, enumerant["enumerant"].asString(),
std::move(caps), std::move(version), std::move(exts), std::move(params));
}
};
const auto establishOperandClass = [&populateEnumValues](
const std::string& enumName, spv::OperandClass operandClass,
spv::EnumValues* enumValues, const Json::Value& operandEnum, const std::string& category) {
assert(category == "BitEnum" || category == "ValueEnum");
bool bitEnum = (category == "BitEnum");
populateEnumValues(enumValues, operandEnum, bitEnum);
OperandClassParams[operandClass].set(enumName, enumValues, bitEnum);
};
const Json::Value operandEnums = root["operand_kinds"];
for (const auto& operandEnum : operandEnums) {
const std::string enumName = operandEnum["kind"].asString();
const std::string category = operandEnum["category"].asString();
if (enumName == "SourceLanguage") {
establishOperandClass(enumName, OperandSource, &SourceLanguageParams, operandEnum, category);
} else if (enumName == "Decoration") {
establishOperandClass(enumName, OperandDecoration, &DecorationParams, operandEnum, category);
} else if (enumName == "ExecutionMode") {
establishOperandClass(enumName, OperandExecutionMode, &ExecutionModeParams, operandEnum, category);
} else if (enumName == "Capability") {
establishOperandClass(enumName, OperandCapability, &CapabilityParams, operandEnum, category);
} else if (enumName == "AddressingModel") {
establishOperandClass(enumName, OperandAddressing, &AddressingParams, operandEnum, category);
} else if (enumName == "MemoryModel") {
establishOperandClass(enumName, OperandMemory, &MemoryParams, operandEnum, category);
} else if (enumName == "MemorySemantics") {
establishOperandClass(enumName, OperandMemorySemantics, &MemorySemanticsParams, operandEnum, category);
} else if (enumName == "ExecutionModel") {
establishOperandClass(enumName, OperandExecutionModel, &ExecutionModelParams, operandEnum, category);
} else if (enumName == "StorageClass") {
establishOperandClass(enumName, OperandStorage, &StorageParams, operandEnum, category);
} else if (enumName == "SamplerAddressingMode") {
establishOperandClass(enumName, OperandSamplerAddressingMode, &SamplerAddressingModeParams, operandEnum, category);
} else if (enumName == "SamplerFilterMode") {
establishOperandClass(enumName, OperandSamplerFilterMode, &SamplerFilterModeParams, operandEnum, category);
} else if (enumName == "ImageFormat") {
establishOperandClass(enumName, OperandSamplerImageFormat, &ImageFormatParams, operandEnum, category);
} else if (enumName == "ImageChannelOrder") {
establishOperandClass(enumName, OperandImageChannelOrder, &ImageChannelOrderParams, operandEnum, category);
} else if (enumName == "ImageChannelDataType") {
establishOperandClass(enumName, OperandImageChannelDataType, &ImageChannelDataTypeParams, operandEnum, category);
} else if (enumName == "ImageOperands") {
establishOperandClass(enumName, OperandImageOperands, &ImageOperandsParams, operandEnum, category);
} else if (enumName == "FPFastMathMode") {
establishOperandClass(enumName, OperandFPFastMath, &FPFastMathParams, operandEnum, category);
} else if (enumName == "FPRoundingMode") {
establishOperandClass(enumName, OperandFPRoundingMode, &FPRoundingModeParams, operandEnum, category);
} else if (enumName == "LinkageType") {
establishOperandClass(enumName, OperandLinkageType, &LinkageTypeParams, operandEnum, category);
} else if (enumName == "FunctionParameterAttribute") {
establishOperandClass(enumName, OperandFuncParamAttr, &FuncParamAttrParams, operandEnum, category);
} else if (enumName == "AccessQualifier") {
establishOperandClass(enumName, OperandAccessQualifier, &AccessQualifierParams, operandEnum, category);
} else if (enumName == "BuiltIn") {
establishOperandClass(enumName, OperandBuiltIn, &BuiltInParams, operandEnum, category);
} else if (enumName == "SelectionControl") {
establishOperandClass(enumName, OperandSelect, &SelectionControlParams, operandEnum, category);
} else if (enumName == "LoopControl") {
establishOperandClass(enumName, OperandLoop, &LoopControlParams, operandEnum, category);
} else if (enumName == "FunctionControl") {
establishOperandClass(enumName, OperandFunction, &FunctionControlParams, operandEnum, category);
} else if (enumName == "Dim") {
establishOperandClass(enumName, OperandDimensionality, &DimensionalityParams, operandEnum, category);
} else if (enumName == "MemoryAccess") {
establishOperandClass(enumName, OperandMemoryAccess, &MemoryAccessParams, operandEnum, category);
} else if (enumName == "Scope") {
establishOperandClass(enumName, OperandScope, &ScopeParams, operandEnum, category);
} else if (enumName == "GroupOperation") {
establishOperandClass(enumName, OperandGroupOperation, &GroupOperationParams, operandEnum, category);
} else if (enumName == "KernelEnqueueFlags") {
establishOperandClass(enumName, OperandKernelEnqueueFlags, &KernelEnqueueFlagsParams, operandEnum, category);
} else if (enumName == "KernelProfilingInfo") {
establishOperandClass(enumName, OperandKernelProfilingInfo, &KernelProfilingInfoParams, operandEnum, category);
}
}
}
}; // end namespace spv