diff options
Diffstat (limited to 'include/asm-sh/futex.h')
-rw-r--r-- | include/asm-sh/futex.h | 77 |
1 files changed, 0 insertions, 77 deletions
diff --git a/include/asm-sh/futex.h b/include/asm-sh/futex.h deleted file mode 100644 index 68256ec5fa3..00000000000 --- a/include/asm-sh/futex.h +++ /dev/null @@ -1,77 +0,0 @@ -#ifndef __ASM_SH_FUTEX_H -#define __ASM_SH_FUTEX_H - -#ifdef __KERNEL__ - -#include <linux/futex.h> -#include <linux/uaccess.h> -#include <asm/errno.h> - -/* XXX: UP variants, fix for SH-4A and SMP.. */ -#include <asm/futex-irq.h> - -static inline int futex_atomic_op_inuser(int encoded_op, int __user *uaddr) -{ - int op = (encoded_op >> 28) & 7; - int cmp = (encoded_op >> 24) & 15; - int oparg = (encoded_op << 8) >> 20; - int cmparg = (encoded_op << 20) >> 20; - int oldval = 0, ret; - - if (encoded_op & (FUTEX_OP_OPARG_SHIFT << 28)) - oparg = 1 << oparg; - - if (!access_ok(VERIFY_WRITE, uaddr, sizeof(int))) - return -EFAULT; - - pagefault_disable(); - - switch (op) { - case FUTEX_OP_SET: - ret = atomic_futex_op_xchg_set(oparg, uaddr, &oldval); - break; - case FUTEX_OP_ADD: - ret = atomic_futex_op_xchg_add(oparg, uaddr, &oldval); - break; - case FUTEX_OP_OR: - ret = atomic_futex_op_xchg_or(oparg, uaddr, &oldval); - break; - case FUTEX_OP_ANDN: - ret = atomic_futex_op_xchg_and(~oparg, uaddr, &oldval); - break; - case FUTEX_OP_XOR: - ret = atomic_futex_op_xchg_xor(oparg, uaddr, &oldval); - break; - default: - ret = -ENOSYS; - break; - } - - pagefault_enable(); - - if (!ret) { - switch (cmp) { - case FUTEX_OP_CMP_EQ: ret = (oldval == cmparg); break; - case FUTEX_OP_CMP_NE: ret = (oldval != cmparg); break; - case FUTEX_OP_CMP_LT: ret = (oldval < cmparg); break; - case FUTEX_OP_CMP_GE: ret = (oldval >= cmparg); break; - case FUTEX_OP_CMP_LE: ret = (oldval <= cmparg); break; - case FUTEX_OP_CMP_GT: ret = (oldval > cmparg); break; - default: ret = -ENOSYS; - } - } - - return ret; -} - -static inline int -futex_atomic_cmpxchg_inatomic(int __user *uaddr, int oldval, int newval) -{ - if (!access_ok(VERIFY_WRITE, uaddr, sizeof(int))) - return -EFAULT; - - return atomic_futex_op_cmpxchg_inatomic(uaddr, oldval, newval); -} - -#endif /* __KERNEL__ */ -#endif /* __ASM_SH_FUTEX_H */ |