1 //===-- Pointer Converter for printf ----------------------------*- C++ -*-===// 2 // 3 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. 4 // See https://llvm.org/LICENSE.txt for license information. 5 // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception 6 // 7 //===----------------------------------------------------------------------===// 8 9 #ifndef LLVM_LIBC_SRC_STDIO_PRINTF_CORE_PTR_CONVERTER_H 10 #define LLVM_LIBC_SRC_STDIO_PRINTF_CORE_PTR_CONVERTER_H 11 12 #include "src/stdio/printf_core/converter_utils.h" 13 #include "src/stdio/printf_core/core_structs.h" 14 #include "src/stdio/printf_core/hex_converter.h" 15 #include "src/stdio/printf_core/writer.h" 16 17 namespace __llvm_libc { 18 namespace printf_core { 19 convert_pointer(Writer * writer,const FormatSection & to_conv)20int inline convert_pointer(Writer *writer, const FormatSection &to_conv) { 21 if (to_conv.conv_val_ptr == (void *)(nullptr)) { 22 const char ZERO_STR[] = "(nullptr)"; 23 // subtract 1 from sizeof to remove the null byte at the end. 24 RET_IF_RESULT_NEGATIVE(writer->write(ZERO_STR, sizeof(ZERO_STR) - 1)); 25 } else { 26 FormatSection hex_conv; 27 hex_conv.has_conv = true; 28 hex_conv.conv_name = 'x'; 29 hex_conv.flags = FormatFlags::ALTERNATE_FORM; 30 hex_conv.conv_val_raw = reinterpret_cast<uintptr_t>(to_conv.conv_val_ptr); 31 return convert_hex(writer, hex_conv); 32 } 33 return WRITE_OK; 34 } 35 36 } // namespace printf_core 37 } // namespace __llvm_libc 38 39 #endif // LLVM_LIBC_SRC_STDIO_PRINTF_CORE_PTR_CONVERTER_H 40