1 // Copyright (c) 2016 Google Inc. 2 // 3 // Licensed under the Apache License, Version 2.0 (the "License"); 4 // you may not use this file except in compliance with the License. 5 // You may obtain a copy of the License at 6 // 7 // http://www.apache.org/licenses/LICENSE-2.0 8 // 9 // Unless required by applicable law or agreed to in writing, software 10 // distributed under the License is distributed on an "AS IS" BASIS, 11 // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 12 // See the License for the specific language governing permissions and 13 // limitations under the License. 14 15 // This file contains utility functions for spv_parsed_operand_t. 16 17 #include "source/parsed_operand.h" 18 19 #include <cassert> 20 #include "source/util/hex_float.h" 21 22 namespace spvtools { 23 EmitNumericLiteral(std::ostream * out,const spv_parsed_instruction_t & inst,const spv_parsed_operand_t & operand)24void EmitNumericLiteral(std::ostream* out, const spv_parsed_instruction_t& inst, 25 const spv_parsed_operand_t& operand) { 26 if (operand.type != SPV_OPERAND_TYPE_LITERAL_INTEGER && 27 operand.type != SPV_OPERAND_TYPE_LITERAL_FLOAT && 28 operand.type != SPV_OPERAND_TYPE_TYPED_LITERAL_NUMBER && 29 operand.type != SPV_OPERAND_TYPE_OPTIONAL_LITERAL_INTEGER && 30 operand.type != SPV_OPERAND_TYPE_OPTIONAL_TYPED_LITERAL_INTEGER) 31 return; 32 if (operand.num_words < 1) return; 33 // TODO(dneto): Support more than 64-bits at a time. 34 if (operand.num_words > 2) return; 35 36 const uint32_t word = inst.words[operand.offset]; 37 if (operand.num_words == 1) { 38 switch (operand.number_kind) { 39 case SPV_NUMBER_SIGNED_INT: 40 *out << int32_t(word); 41 break; 42 case SPV_NUMBER_UNSIGNED_INT: 43 *out << word; 44 break; 45 case SPV_NUMBER_FLOATING: 46 if (operand.number_bit_width == 16) { 47 *out << spvtools::utils::FloatProxy<spvtools::utils::Float16>( 48 uint16_t(word & 0xFFFF)); 49 } else { 50 // Assume 32-bit floats. 51 *out << spvtools::utils::FloatProxy<float>(word); 52 } 53 break; 54 default: 55 break; 56 } 57 } else if (operand.num_words == 2) { 58 // Multi-word numbers are presented with lower order words first. 59 uint64_t bits = 60 uint64_t(word) | (uint64_t(inst.words[operand.offset + 1]) << 32); 61 switch (operand.number_kind) { 62 case SPV_NUMBER_SIGNED_INT: 63 *out << int64_t(bits); 64 break; 65 case SPV_NUMBER_UNSIGNED_INT: 66 *out << bits; 67 break; 68 case SPV_NUMBER_FLOATING: 69 // Assume only 64-bit floats. 70 *out << spvtools::utils::FloatProxy<double>(bits); 71 break; 72 default: 73 break; 74 } 75 } 76 } 77 } // namespace spvtools 78