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_TYPED_LITERAL_NUMBER && 28 operand.type != SPV_OPERAND_TYPE_OPTIONAL_LITERAL_INTEGER && 29 operand.type != SPV_OPERAND_TYPE_OPTIONAL_TYPED_LITERAL_INTEGER) 30 return; 31 if (operand.num_words < 1) return; 32 // TODO(dneto): Support more than 64-bits at a time. 33 if (operand.num_words > 2) return; 34 35 const uint32_t word = inst.words[operand.offset]; 36 if (operand.num_words == 1) { 37 switch (operand.number_kind) { 38 case SPV_NUMBER_SIGNED_INT: 39 *out << int32_t(word); 40 break; 41 case SPV_NUMBER_UNSIGNED_INT: 42 *out << word; 43 break; 44 case SPV_NUMBER_FLOATING: 45 if (operand.number_bit_width == 16) { 46 *out << spvtools::utils::FloatProxy<spvtools::utils::Float16>( 47 uint16_t(word & 0xFFFF)); 48 } else { 49 // Assume 32-bit floats. 50 *out << spvtools::utils::FloatProxy<float>(word); 51 } 52 break; 53 default: 54 break; 55 } 56 } else if (operand.num_words == 2) { 57 // Multi-word numbers are presented with lower order words first. 58 uint64_t bits = 59 uint64_t(word) | (uint64_t(inst.words[operand.offset + 1]) << 32); 60 switch (operand.number_kind) { 61 case SPV_NUMBER_SIGNED_INT: 62 *out << int64_t(bits); 63 break; 64 case SPV_NUMBER_UNSIGNED_INT: 65 *out << bits; 66 break; 67 case SPV_NUMBER_FLOATING: 68 // Assume only 64-bit floats. 69 *out << spvtools::utils::FloatProxy<double>(bits); 70 break; 71 default: 72 break; 73 } 74 } 75 } 76 } // namespace spvtools 77