| 1 | //===------------ Linux implementation of an exit function ------*- C++ -*-===// |
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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/__support/OSUtil/linux/syscall.h" // syscall_impl |
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| 10 | #include "src/__support/common.h" |
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| 11 | #include "src/__support/macros/config.h" |
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| 12 | #include <sys/syscall.h> // For syscall numbers. |
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| 13 | |
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| 14 | namespace LIBC_NAMESPACE_DECL { |
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| 15 | namespace internal { |
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| 16 | |
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| 17 | // mark as no_stack_protector for x86 since TLS can be torn down before calling |
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| 18 | // exit so that the stack protector canary cannot be loaded. |
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| 19 | #ifdef LIBC_TARGET_ARCH_IS_X86 |
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| 20 | __attribute__((no_stack_protector)) |
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| 21 | #endif |
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| 22 | __attribute__((noreturn)) void |
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| 23 | exit(int status) { |
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| 24 | for (;;) { |
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| 25 | LIBC_NAMESPACE::syscall_impl<long>(SYS_exit_group, status); |
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| 26 | LIBC_NAMESPACE::syscall_impl<long>(SYS_exit, status); |
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| 27 | } |
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| 28 | } |
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| 29 | |
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| 30 | } // namespace internal |
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| 31 | } // namespace LIBC_NAMESPACE_DECL |
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| 32 | |
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