~ [ source navigation ] ~ [ diff markup ] ~ [ identifier search ] ~

TOMOYO Linux Cross Reference
Linux/arch/sh/include/asm/futex-llsc.h

Version: ~ [ linux-5.5-rc1 ] ~ [ linux-5.4.2 ] ~ [ linux-5.3.15 ] ~ [ linux-5.2.21 ] ~ [ linux-5.1.21 ] ~ [ linux-5.0.21 ] ~ [ linux-4.20.17 ] ~ [ linux-4.19.88 ] ~ [ linux-4.18.20 ] ~ [ linux-4.17.19 ] ~ [ linux-4.16.18 ] ~ [ linux-4.15.18 ] ~ [ linux-4.14.158 ] ~ [ linux-4.13.16 ] ~ [ linux-4.12.14 ] ~ [ linux-4.11.12 ] ~ [ linux-4.10.17 ] ~ [ linux-4.9.206 ] ~ [ linux-4.8.17 ] ~ [ linux-4.7.10 ] ~ [ linux-4.6.7 ] ~ [ linux-4.5.7 ] ~ [ linux-4.4.206 ] ~ [ linux-4.3.6 ] ~ [ linux-4.2.8 ] ~ [ linux-4.1.52 ] ~ [ linux-4.0.9 ] ~ [ linux-3.19.8 ] ~ [ linux-3.18.140 ] ~ [ linux-3.17.8 ] ~ [ linux-3.16.78 ] ~ [ linux-3.15.10 ] ~ [ linux-3.14.79 ] ~ [ linux-3.13.11 ] ~ [ linux-3.12.74 ] ~ [ linux-3.11.10 ] ~ [ linux-3.10.108 ] ~ [ linux-3.9.11 ] ~ [ linux-3.8.13 ] ~ [ linux-3.7.10 ] ~ [ linux-3.6.11 ] ~ [ linux-3.5.7 ] ~ [ linux-3.4.113 ] ~ [ linux-3.3.8 ] ~ [ linux-3.2.102 ] ~ [ linux-3.1.10 ] ~ [ linux-3.0.101 ] ~ [ linux-2.6.32.71 ] ~ [ linux-2.6.0 ] ~ [ linux-2.4.37.11 ] ~ [ unix-v6-master ] ~ [ ccs-tools-1.8.5 ] ~ [ policy-sample ] ~
Architecture: ~ [ i386 ] ~ [ alpha ] ~ [ m68k ] ~ [ mips ] ~ [ ppc ] ~ [ sparc ] ~ [ sparc64 ] ~

  1 /* SPDX-License-Identifier: GPL-2.0 */
  2 #ifndef __ASM_SH_FUTEX_LLSC_H
  3 #define __ASM_SH_FUTEX_LLSC_H
  4 
  5 static inline int atomic_futex_op_cmpxchg_inatomic(u32 *uval,
  6                                                    u32 __user *uaddr,
  7                                                    u32 oldval, u32 newval)
  8 {
  9         int err = 0;
 10         __asm__ __volatile__(
 11                 "synco\n"
 12                 "1:\n\t"
 13                 "movli.l        @%2, r0\n\t"
 14                 "mov    r0, %1\n\t"
 15                 "cmp/eq %1, %4\n\t"
 16                 "bf     2f\n\t"
 17                 "mov    %5, r0\n\t"
 18                 "movco.l        r0, @%2\n\t"
 19                 "bf     1b\n"
 20                 "2:\n\t"
 21                 "synco\n\t"
 22 #ifdef CONFIG_MMU
 23                 ".section       .fixup,\"ax\"\n"
 24                 "3:\n\t"
 25                 "mov.l  4f, %0\n\t"
 26                 "jmp    @%0\n\t"
 27                 " mov   %3, %0\n\t"
 28                 ".balign        4\n"
 29                 "4:     .long   2b\n\t"
 30                 ".previous\n"
 31                 ".section       __ex_table,\"a\"\n\t"
 32                 ".long  1b, 3b\n\t"
 33                 ".previous"
 34 #endif
 35                 :"+r" (err), "=&r" (*uval)
 36                 :"r" (uaddr), "i" (-EFAULT), "r" (oldval), "r" (newval)
 37                 :"t", "memory", "r0");
 38         if (err) return err;
 39         return 0;
 40 }
 41 
 42 #endif /* __ASM_SH_FUTEX_LLSC_H */
 43 

~ [ source navigation ] ~ [ diff markup ] ~ [ identifier search ] ~

kernel.org | git.kernel.org | LWN.net | Project Home | Wiki (Japanese) | Wiki (English) | SVN repository | Mail admin

Linux® is a registered trademark of Linus Torvalds in the United States and other countries.
TOMOYO® is a registered trademark of NTT DATA CORPORATION.

osdn.jp