Файловый менеджер

Файловый менеджер - Редактировать - /usr/src/linux-headers-5.4.0-200/arch/microblaze/include/asm/futex.h

Назад
/* SPDX-License-Identifier: GPL-2.0 / #ifndef _ASM_MICROBLAZE_FUTEX_H #define _ASM_MICROBLAZE_FUTEX_H #ifdef __KERNEL__ #include <linux/futex.h> #include <linux/uaccess.h> #include <asm/errno.h> #define __futex_atomic_op(insn, ret, oldval, uaddr, oparg) \ ({ \ __asm__ __volatile__ ( \ "1: lwx %0, %2, r0; " \ insn \ "2: swx %1, %2, r0; \ addic %1, r0, 0; \ bnei %1, 1b; \ 3: \ .section .fixup,\"ax\"; \ 4: brid 3b; \ addik %1, r0, %3; \ .previous; \ .section __ex_table,\"a\"; \ .word 1b,4b,2b,4b; \ .previous;" \ : "=&r" (oldval), "=&r" (ret) \ : "r" (uaddr), "i" (-EFAULT), "r" (oparg) \ ); \ }) static inline int arch_futex_atomic_op_inuser(int op, int oparg, int oval, u32 __user uaddr) { int oldval = 0, ret; pagefault_disable(); switch (op) { case FUTEX_OP_SET: __futex_atomic_op("or %1,%4,%4;", ret, oldval, uaddr, oparg); break; case FUTEX_OP_ADD: __futex_atomic_op("add %1,%0,%4;", ret, oldval, uaddr, oparg); break; case FUTEX_OP_OR: __futex_atomic_op("or %1,%0,%4;", ret, oldval, uaddr, oparg); break; case FUTEX_OP_ANDN: __futex_atomic_op("andn %1,%0,%4;", ret, oldval, uaddr, oparg); break; case FUTEX_OP_XOR: __futex_atomic_op("xor %1,%0,%4;", ret, oldval, uaddr, oparg); break; default: ret = -ENOSYS; } pagefault_enable(); if (!ret) oval = oldval; return ret; } static inline int futex_atomic_cmpxchg_inatomic(u32 uval, u32 __user uaddr, u32 oldval, u32 newval) { int ret = 0, cmp; u32 prev; if (!access_ok(uaddr, sizeof(u32))) return -EFAULT; __asm__ __volatile__ ("1: lwx %1, %3, r0; \ cmp %2, %1, %4; \ bnei %2, 3f; \ 2: swx %5, %3, r0; \ addic %2, r0, 0; \ bnei %2, 1b; \ 3: \ .section .fixup,\"ax\"; \ 4: brid 3b; \ addik %0, r0, %6; \ .previous; \ .section __ex_table,\"a\"; \ .word 1b,4b,2b,4b; \ .previous;" \ : "+r" (ret), "=&r" (prev), "=&r"(cmp) \ : "r" (uaddr), "r" (oldval), "r" (newval), "i" (-EFAULT)); uval = prev; return ret; } #endif / __KERNEL__ */ #endif

| ver. 1.4 | Github | . | PHP 7.4.3-4ubuntu2.24 | Генерация страницы: 0 | proxy | phpinfo | Настройка