b862f3b099
Use "+m" rather than a combination of "=m" and "m" for improved clarity and consistency. This also fixes some inlines that incorrectly didn't tell the compiler that they read the old value at all, potentially causing the compiler to generate bogus code. It appear that all of those potential bugs were hidden by the use of extra "volatile" specifiers on the data structures in question, though. Signed-off-by: Linus Torvalds <torvalds@osdl.org>
83 lines
2.4 KiB
C
83 lines
2.4 KiB
C
#ifndef __ARCH_I386_POSIX_TYPES_H
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#define __ARCH_I386_POSIX_TYPES_H
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/*
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* This file is generally used by user-level software, so you need to
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* be a little careful about namespace pollution etc. Also, we cannot
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* assume GCC is being used.
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*/
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typedef unsigned long __kernel_ino_t;
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typedef unsigned short __kernel_mode_t;
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typedef unsigned short __kernel_nlink_t;
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typedef long __kernel_off_t;
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typedef int __kernel_pid_t;
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typedef unsigned short __kernel_ipc_pid_t;
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typedef unsigned short __kernel_uid_t;
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typedef unsigned short __kernel_gid_t;
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typedef unsigned int __kernel_size_t;
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typedef int __kernel_ssize_t;
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typedef int __kernel_ptrdiff_t;
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typedef long __kernel_time_t;
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typedef long __kernel_suseconds_t;
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typedef long __kernel_clock_t;
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typedef int __kernel_timer_t;
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typedef int __kernel_clockid_t;
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typedef int __kernel_daddr_t;
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typedef char * __kernel_caddr_t;
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typedef unsigned short __kernel_uid16_t;
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typedef unsigned short __kernel_gid16_t;
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typedef unsigned int __kernel_uid32_t;
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typedef unsigned int __kernel_gid32_t;
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typedef unsigned short __kernel_old_uid_t;
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typedef unsigned short __kernel_old_gid_t;
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typedef unsigned short __kernel_old_dev_t;
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#ifdef __GNUC__
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typedef long long __kernel_loff_t;
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#endif
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typedef struct {
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#if defined(__KERNEL__) || defined(__USE_ALL)
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int val[2];
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#else /* !defined(__KERNEL__) && !defined(__USE_ALL) */
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int __val[2];
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#endif /* !defined(__KERNEL__) && !defined(__USE_ALL) */
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} __kernel_fsid_t;
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#if defined(__KERNEL__) || !defined(__GLIBC__) || (__GLIBC__ < 2)
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#undef __FD_SET
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#define __FD_SET(fd,fdsetp) \
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__asm__ __volatile__("btsl %1,%0": \
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"+m" (*(__kernel_fd_set *) (fdsetp)):"r" ((int) (fd)))
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#undef __FD_CLR
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#define __FD_CLR(fd,fdsetp) \
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__asm__ __volatile__("btrl %1,%0": \
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"+m" (*(__kernel_fd_set *) (fdsetp)):"r" ((int) (fd)))
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#undef __FD_ISSET
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#define __FD_ISSET(fd,fdsetp) (__extension__ ({ \
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unsigned char __result; \
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__asm__ __volatile__("btl %1,%2 ; setb %0" \
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:"=q" (__result) :"r" ((int) (fd)), \
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"m" (*(__kernel_fd_set *) (fdsetp))); \
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__result; }))
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#undef __FD_ZERO
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#define __FD_ZERO(fdsetp) \
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do { \
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int __d0, __d1; \
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__asm__ __volatile__("cld ; rep ; stosl" \
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:"=m" (*(__kernel_fd_set *) (fdsetp)), \
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"=&c" (__d0), "=&D" (__d1) \
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:"a" (0), "1" (__FDSET_LONGS), \
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"2" ((__kernel_fd_set *) (fdsetp)) : "memory"); \
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} while (0)
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#endif /* defined(__KERNEL__) || !defined(__GLIBC__) || (__GLIBC__ < 2) */
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#endif
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