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