| // Copyright (c) 2015-2016 The Khronos Group Inc. |
| // |
| // 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. |
| |
| #include "source/assembly_grammar.h" |
| |
| #include <algorithm> |
| #include <cassert> |
| #include <cstring> |
| |
| #include "source/ext_inst.h" |
| #include "source/opcode.h" |
| #include "source/operand.h" |
| #include "source/table.h" |
| |
| namespace spvtools { |
| namespace { |
| |
| /// @brief Parses a mask expression string for the given operand type. |
| /// |
| /// A mask expression is a sequence of one or more terms separated by '|', |
| /// where each term a named enum value for the given type. No whitespace |
| /// is permitted. |
| /// |
| /// On success, the value is written to pValue. |
| /// |
| /// @param[in] operandTable operand lookup table |
| /// @param[in] type of the operand |
| /// @param[in] textValue word of text to be parsed |
| /// @param[out] pValue where the resulting value is written |
| /// |
| /// @return result code |
| spv_result_t spvTextParseMaskOperand(spv_target_env env, |
| const spv_operand_table operandTable, |
| const spv_operand_type_t type, |
| const char* textValue, uint32_t* pValue) { |
| if (textValue == nullptr) return SPV_ERROR_INVALID_TEXT; |
| size_t text_length = strlen(textValue); |
| if (text_length == 0) return SPV_ERROR_INVALID_TEXT; |
| const char* text_end = textValue + text_length; |
| |
| // We only support mask expressions in ASCII, so the separator value is a |
| // char. |
| const char separator = '|'; |
| |
| // Accumulate the result by interpreting one word at a time, scanning |
| // from left to right. |
| uint32_t value = 0; |
| const char* begin = textValue; // The left end of the current word. |
| const char* end = nullptr; // One character past the end of the current word. |
| do { |
| end = std::find(begin, text_end, separator); |
| |
| spv_operand_desc entry = nullptr; |
| if (spvOperandTableNameLookup(env, operandTable, type, begin, end - begin, |
| &entry)) { |
| return SPV_ERROR_INVALID_TEXT; |
| } |
| value |= entry->value; |
| |
| // Advance to the next word by skipping over the separator. |
| begin = end + 1; |
| } while (end != text_end); |
| |
| *pValue = value; |
| return SPV_SUCCESS; |
| } |
| |
| // Associates an opcode with its name. |
| struct SpecConstantOpcodeEntry { |
| SpvOp opcode; |
| const char* name; |
| }; |
| |
| // All the opcodes allowed as the operation for OpSpecConstantOp. |
| // The name does not have the usual "Op" prefix. For example opcode SpvOpIAdd |
| // is associated with the name "IAdd". |
| // |
| // clang-format off |
| #define CASE(NAME) { SpvOp##NAME, #NAME } |
| const SpecConstantOpcodeEntry kOpSpecConstantOpcodes[] = { |
| // Conversion |
| CASE(SConvert), |
| CASE(FConvert), |
| CASE(ConvertFToS), |
| CASE(ConvertSToF), |
| CASE(ConvertFToU), |
| CASE(ConvertUToF), |
| CASE(UConvert), |
| CASE(ConvertPtrToU), |
| CASE(ConvertUToPtr), |
| CASE(GenericCastToPtr), |
| CASE(PtrCastToGeneric), |
| CASE(Bitcast), |
| CASE(QuantizeToF16), |
| // Arithmetic |
| CASE(SNegate), |
| CASE(Not), |
| CASE(IAdd), |
| CASE(ISub), |
| CASE(IMul), |
| CASE(UDiv), |
| CASE(SDiv), |
| CASE(UMod), |
| CASE(SRem), |
| CASE(SMod), |
| CASE(ShiftRightLogical), |
| CASE(ShiftRightArithmetic), |
| CASE(ShiftLeftLogical), |
| CASE(BitwiseOr), |
| CASE(BitwiseAnd), |
| CASE(BitwiseXor), |
| CASE(FNegate), |
| CASE(FAdd), |
| CASE(FSub), |
| CASE(FMul), |
| CASE(FDiv), |
| CASE(FRem), |
| CASE(FMod), |
| // Composite |
| CASE(VectorShuffle), |
| CASE(CompositeExtract), |
| CASE(CompositeInsert), |
| // Logical |
| CASE(LogicalOr), |
| CASE(LogicalAnd), |
| CASE(LogicalNot), |
| CASE(LogicalEqual), |
| CASE(LogicalNotEqual), |
| CASE(Select), |
| // Comparison |
| CASE(IEqual), |
| CASE(INotEqual), |
| CASE(ULessThan), |
| CASE(SLessThan), |
| CASE(UGreaterThan), |
| CASE(SGreaterThan), |
| CASE(ULessThanEqual), |
| CASE(SLessThanEqual), |
| CASE(UGreaterThanEqual), |
| CASE(SGreaterThanEqual), |
| // Memory |
| CASE(AccessChain), |
| CASE(InBoundsAccessChain), |
| CASE(PtrAccessChain), |
| CASE(InBoundsPtrAccessChain), |
| CASE(CooperativeMatrixLengthNV) |
| }; |
| |
| // The 60 is determined by counting the opcodes listed in the spec. |
| static_assert(60 == sizeof(kOpSpecConstantOpcodes)/sizeof(kOpSpecConstantOpcodes[0]), |
| "OpSpecConstantOp opcode table is incomplete"); |
| #undef CASE |
| // clang-format on |
| |
| const size_t kNumOpSpecConstantOpcodes = |
| sizeof(kOpSpecConstantOpcodes) / sizeof(kOpSpecConstantOpcodes[0]); |
| |
| } // namespace |
| |
| bool AssemblyGrammar::isValid() const { |
| return operandTable_ && opcodeTable_ && extInstTable_; |
| } |
| |
| CapabilitySet AssemblyGrammar::filterCapsAgainstTargetEnv( |
| const SpvCapability* cap_array, uint32_t count) const { |
| CapabilitySet cap_set; |
| for (uint32_t i = 0; i < count; ++i) { |
| spv_operand_desc cap_desc = {}; |
| if (SPV_SUCCESS == lookupOperand(SPV_OPERAND_TYPE_CAPABILITY, |
| static_cast<uint32_t>(cap_array[i]), |
| &cap_desc)) { |
| // spvOperandTableValueLookup() filters capabilities internally |
| // according to the current target environment by itself. So we |
| // should be safe to add this capability if the lookup succeeds. |
| cap_set.Add(cap_array[i]); |
| } |
| } |
| return cap_set; |
| } |
| |
| spv_result_t AssemblyGrammar::lookupOpcode(const char* name, |
| spv_opcode_desc* desc) const { |
| return spvOpcodeTableNameLookup(target_env_, opcodeTable_, name, desc); |
| } |
| |
| spv_result_t AssemblyGrammar::lookupOpcode(SpvOp opcode, |
| spv_opcode_desc* desc) const { |
| return spvOpcodeTableValueLookup(target_env_, opcodeTable_, opcode, desc); |
| } |
| |
| spv_result_t AssemblyGrammar::lookupOperand(spv_operand_type_t type, |
| const char* name, size_t name_len, |
| spv_operand_desc* desc) const { |
| return spvOperandTableNameLookup(target_env_, operandTable_, type, name, |
| name_len, desc); |
| } |
| |
| spv_result_t AssemblyGrammar::lookupOperand(spv_operand_type_t type, |
| uint32_t operand, |
| spv_operand_desc* desc) const { |
| return spvOperandTableValueLookup(target_env_, operandTable_, type, operand, |
| desc); |
| } |
| |
| spv_result_t AssemblyGrammar::lookupSpecConstantOpcode(const char* name, |
| SpvOp* opcode) const { |
| const auto* last = kOpSpecConstantOpcodes + kNumOpSpecConstantOpcodes; |
| const auto* found = |
| std::find_if(kOpSpecConstantOpcodes, last, |
| [name](const SpecConstantOpcodeEntry& entry) { |
| return 0 == strcmp(name, entry.name); |
| }); |
| if (found == last) return SPV_ERROR_INVALID_LOOKUP; |
| *opcode = found->opcode; |
| return SPV_SUCCESS; |
| } |
| |
| spv_result_t AssemblyGrammar::lookupSpecConstantOpcode(SpvOp opcode) const { |
| const auto* last = kOpSpecConstantOpcodes + kNumOpSpecConstantOpcodes; |
| const auto* found = |
| std::find_if(kOpSpecConstantOpcodes, last, |
| [opcode](const SpecConstantOpcodeEntry& entry) { |
| return opcode == entry.opcode; |
| }); |
| if (found == last) return SPV_ERROR_INVALID_LOOKUP; |
| return SPV_SUCCESS; |
| } |
| |
| spv_result_t AssemblyGrammar::parseMaskOperand(const spv_operand_type_t type, |
| const char* textValue, |
| uint32_t* pValue) const { |
| return spvTextParseMaskOperand(target_env_, operandTable_, type, textValue, |
| pValue); |
| } |
| spv_result_t AssemblyGrammar::lookupExtInst(spv_ext_inst_type_t type, |
| const char* textValue, |
| spv_ext_inst_desc* extInst) const { |
| return spvExtInstTableNameLookup(extInstTable_, type, textValue, extInst); |
| } |
| |
| spv_result_t AssemblyGrammar::lookupExtInst(spv_ext_inst_type_t type, |
| uint32_t firstWord, |
| spv_ext_inst_desc* extInst) const { |
| return spvExtInstTableValueLookup(extInstTable_, type, firstWord, extInst); |
| } |
| |
| void AssemblyGrammar::pushOperandTypesForMask( |
| const spv_operand_type_t type, const uint32_t mask, |
| spv_operand_pattern_t* pattern) const { |
| spvPushOperandTypesForMask(target_env_, operandTable_, type, mask, pattern); |
| } |
| |
| } // namespace spvtools |
