c9783d2bda
This patch adds a bunch of ifdefs to handle the 32 bit versions of some syscalls, which often only append a 64 to the name of the syscall (with exception of SYS_lseek -> SYS_llseek and SYS_futex -> SYS_futex_time64) This patch also tries to handle cases where wait4 is not available (as in riscv32): to implement wait, wait4 and waitpid when wait4 is not available, we check for alternative wait calls and ultimately rely on waitid to implement them all. In riscv32, only waitid is available, so we need it to support this platform. Reviewed By: michaelrj Differential Revision: https://reviews.llvm.org/D148371
45 lines
1.5 KiB
C
45 lines
1.5 KiB
C
//===-- Definition of macros from sys/wait.h ------------------------------===//
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//
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// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
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// See https://llvm.org/LICENSE.txt for license information.
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// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
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//
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//===----------------------------------------------------------------------===//
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#ifndef __LLVM_LIBC_MACROS_LINUX_SYS_WAIT_MACROS_H
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#define __LLVM_LIBC_MACROS_LINUX_SYS_WAIT_MACROS_H
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// Wait flags
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#define WNOHANG 1 // Do not block
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#define WUNTRACED 2 // Report is a child has stopped even if untraced
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#define WEXITED 4 // Report dead child
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#define WCONTINUED 8 // Report if a stopped child has been resumed by SIGCONT
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#define WSTOPPED WUNTRACED
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// Wait status info macros
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#define __WEXITSTATUS(status) (((status)&0xff00) >> 8)
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#define __WTERMSIG(status) ((status)&0x7f)
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#define __WIFEXITED(status) (__WTERMSIG(status) == 0)
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// Macros for constructing status values.
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#define __W_EXITCODE(ret, sig) ((ret) << 8 | (sig))
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#define __W_STOPCODE(sig) ((sig) << 8 | 0x7f)
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#define __W_CONTINUED 0xffff
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#define __WCOREFLAG 0x80
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#define WEXITSTATUS(status) __WEXITSTATUS(status)
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#define WTERMSIG(status) __WTERMSIG(status)
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#define WIFEXITED(status) __WIFEXITED(status)
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#define WCOREFLAG __WCOREFLAG
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#define W_EXITCODE(ret, sig) __W_EXITCODE(ret, sig)
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#define W_STOPCODE(sig) __W_STOPCODE(sig)
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// First argument to waitid:
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#define P_ALL 0
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#define P_PID 1
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#define P_PGID 2
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#define P_PIDFD 3
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#endif // __LLVM_LIBC_MACROS_LINUX_SYS_WAIT_MACROS_H
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