| Server IP : 79.136.114.73 / Your IP : 3.141.38.5 Web Server : Apache/2.4.7 (Ubuntu) PHP/5.5.9-1ubuntu4.29 OpenSSL/1.0.1f System : Linux b8009 3.13.0-170-generic #220-Ubuntu SMP Thu May 9 12:40:49 UTC 2019 x86_64 User : www-data ( 33) PHP Version : 5.5.9-1ubuntu4.29 Disable Function : pcntl_alarm,pcntl_fork,pcntl_waitpid,pcntl_wait,pcntl_wifexited,pcntl_wifstopped,pcntl_wifsignaled,pcntl_wexitstatus,pcntl_wtermsig,pcntl_wstopsig,pcntl_signal,pcntl_signal_dispatch,pcntl_get_last_error,pcntl_strerror,pcntl_sigprocmask,pcntl_sigwaitinfo,pcntl_sigtimedwait,pcntl_exec,pcntl_getpriority,pcntl_setpriority, MySQL : ON | cURL : ON | WGET : ON | Perl : ON | Python : ON | Sudo : ON | Pkexec : ON Directory : /usr/src/linux-headers-3.13.0-170/arch/cris/include/asm/ |
Upload File : |
#ifndef __ASM_CRIS_CMPXCHG__
#define __ASM_CRIS_CMPXCHG__
#include <linux/irqflags.h>
static inline unsigned long __xchg(unsigned long x, volatile void * ptr, int size)
{
/* since Etrax doesn't have any atomic xchg instructions, we need to disable
irq's (if enabled) and do it with move.d's */
unsigned long flags,temp;
local_irq_save(flags); /* save flags, including irq enable bit and shut off irqs */
switch (size) {
case 1:
*((unsigned char *)&temp) = x;
x = *(unsigned char *)ptr;
*(unsigned char *)ptr = *((unsigned char *)&temp);
break;
case 2:
*((unsigned short *)&temp) = x;
x = *(unsigned short *)ptr;
*(unsigned short *)ptr = *((unsigned short *)&temp);
break;
case 4:
temp = x;
x = *(unsigned long *)ptr;
*(unsigned long *)ptr = temp;
break;
}
local_irq_restore(flags); /* restore irq enable bit */
return x;
}
#define xchg(ptr,x) \
((__typeof__(*(ptr)))__xchg((unsigned long)(x),(ptr),sizeof(*(ptr))))
#define tas(ptr) (xchg((ptr),1))
#include <asm-generic/cmpxchg-local.h>
/*
* cmpxchg_local and cmpxchg64_local are atomic wrt current CPU. Always make
* them available.
*/
#define cmpxchg_local(ptr, o, n) \
((__typeof__(*(ptr)))__cmpxchg_local_generic((ptr), (unsigned long)(o),\
(unsigned long)(n), sizeof(*(ptr))))
#define cmpxchg64_local(ptr, o, n) __cmpxchg64_local_generic((ptr), (o), (n))
#ifndef CONFIG_SMP
#include <asm-generic/cmpxchg.h>
#endif
#endif /* __ASM_CRIS_CMPXCHG__ */