1 //===-- Implementation of ungetc ------------------------------------------===// 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 #include "src/stdio/ungetc.h" 10 #include "file.h" 11 #include "src/__support/macros/config.h" 12 13 #include "hdr/types/FILE.h" 14 15 namespace LIBC_NAMESPACE_DECL { 16 17 LLVM_LIBC_FUNCTION(int, ungetc, (int c, ::FILE *stream)) { 18 int ret; 19 rpc::Client::Port port = rpc::client.open<RPC_UNGETC>(); 20 port.send_and_recv( __anone2c544530102(rpc::Buffer *buffer, uint32_t) 21 [=](rpc::Buffer *buffer, uint32_t) { 22 buffer->data[0] = c; 23 buffer->data[1] = file::from_stream(stream); 24 }, __anone2c544530202(rpc::Buffer *buffer, uint32_t) 25 [&](rpc::Buffer *buffer, uint32_t) { 26 ret = static_cast<int>(buffer->data[0]); 27 }); 28 port.close(); 29 return ret; 30 } 31 32 } // namespace LIBC_NAMESPACE_DECL 33