| 1 | //===-- Implementation of ungetc ------------------------------------------===// |
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| 2 | // |
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| 3 | // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. |
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| 4 | // See https://llvm.org/LICENSE.txt for license information. |
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| 5 | // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception |
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| 6 | // |
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| 7 | //===----------------------------------------------------------------------===// |
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| 8 | |
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| 9 | #include "src/stdio/ungetc.h" |
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| 10 | |
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| 11 | #include "file.h" |
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| 12 | #include "hdr/types/FILE.h" |
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| 13 | #include "src/__support/common.h" |
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| 14 | |
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| 15 | namespace LIBC_NAMESPACE_DECL { |
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| 16 | |
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| 17 | LLVM_LIBC_FUNCTION(int, ungetc, (int c, ::FILE *stream)) { |
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| 18 | int ret; |
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| 19 | rpc::Client::Port port = rpc::client.open<LIBC_UNGETC>(); |
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| 20 | port.send_and_recv( |
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| 21 | [=](rpc::Buffer *buffer, uint32_t) { |
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| 22 | buffer->data[0] = c; |
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| 23 | buffer->data[1] = file::from_stream(stream); |
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| 24 | }, |
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| 25 | [&](rpc::Buffer *buffer, uint32_t) { |
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| 26 | ret = static_cast<int>(buffer->data[0]); |
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| 27 | }); |
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| 28 | port.close(); |
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| 29 | return ret; |
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| 30 | } |
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| 31 | |
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| 32 | } // namespace LIBC_NAMESPACE_DECL |
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| 33 | |
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