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Diffstat (limited to 'ANDROID_3.4.5/arch/microblaze/include/asm/futex.h')
-rw-r--r--ANDROID_3.4.5/arch/microblaze/include/asm/futex.h129
1 files changed, 0 insertions, 129 deletions
diff --git a/ANDROID_3.4.5/arch/microblaze/include/asm/futex.h b/ANDROID_3.4.5/arch/microblaze/include/asm/futex.h
deleted file mode 100644
index ff8cde15..00000000
--- a/ANDROID_3.4.5/arch/microblaze/include/asm/futex.h
+++ /dev/null
@@ -1,129 +0,0 @@
-#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
-futex_atomic_op_inuser(int encoded_op, u32 __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(u32)))
- return -EFAULT;
-
- 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) {
- 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(u32 *uval, u32 __user *uaddr,
- u32 oldval, u32 newval)
-{
- int ret = 0, cmp;
- u32 prev;
-
- if (!access_ok(VERIFY_WRITE, uaddr, sizeof(u32)))
- return -EFAULT;
-
- __asm__ __volatile__ ("1: lwx %1, %3, r0; \
- cmp %2, %1, %4; \
- beqi %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