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-rw-r--r--arch/alpha/include/asm/futex.h119
1 files changed, 0 insertions, 119 deletions
diff --git a/arch/alpha/include/asm/futex.h b/arch/alpha/include/asm/futex.h
deleted file mode 100644
index f939794..0000000
--- a/arch/alpha/include/asm/futex.h
+++ /dev/null
@@ -1,119 +0,0 @@
-#ifndef _ASM_ALPHA_FUTEX_H
-#define _ASM_ALPHA_FUTEX_H
-
-#ifdef __KERNEL__
-
-#include <linux/futex.h>
-#include <linux/uaccess.h>
-#include <asm/errno.h>
-#include <asm/barrier.h>
-
-#define __futex_atomic_op(insn, ret, oldval, uaddr, oparg) \
- __asm__ __volatile__( \
- __ASM_SMP_MB \
- "1: ldl_l %0,0(%2)\n" \
- insn \
- "2: stl_c %1,0(%2)\n" \
- " beq %1,4f\n" \
- " mov $31,%1\n" \
- "3: .subsection 2\n" \
- "4: br 1b\n" \
- " .previous\n" \
- " .section __ex_table,\"a\"\n" \
- " .long 1b-.\n" \
- " lda $31,3b-1b(%1)\n" \
- " .long 2b-.\n" \
- " lda $31,3b-2b(%1)\n" \
- " .previous\n" \
- : "=&r" (oldval), "=&r"(ret) \
- : "r" (uaddr), "r"(oparg) \
- : "memory")
-
-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("mov %3,%1\n", ret, oldval, uaddr, oparg);
- break;
- case FUTEX_OP_ADD:
- __futex_atomic_op("addl %0,%3,%1\n", ret, oldval, uaddr, oparg);
- break;
- case FUTEX_OP_OR:
- __futex_atomic_op("or %0,%3,%1\n", ret, oldval, uaddr, oparg);
- break;
- case FUTEX_OP_ANDN:
- __futex_atomic_op("andnot %0,%3,%1\n", ret, oldval, uaddr, oparg);
- break;
- case FUTEX_OP_XOR:
- __futex_atomic_op("xor %0,%3,%1\n", 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__ (
- __ASM_SMP_MB
- "1: ldl_l %1,0(%3)\n"
- " cmpeq %1,%4,%2\n"
- " beq %2,3f\n"
- " mov %5,%2\n"
- "2: stl_c %2,0(%3)\n"
- " beq %2,4f\n"
- "3: .subsection 2\n"
- "4: br 1b\n"
- " .previous\n"
- " .section __ex_table,\"a\"\n"
- " .long 1b-.\n"
- " lda $31,3b-1b(%0)\n"
- " .long 2b-.\n"
- " lda $31,3b-2b(%0)\n"
- " .previous\n"
- : "+r"(ret), "=&r"(prev), "=&r"(cmp)
- : "r"(uaddr), "r"((long)(int)oldval), "r"(newval)
- : "memory");
-
- *uval = prev;
- return ret;
-}
-
-#endif /* __KERNEL__ */
-#endif /* _ASM_ALPHA_FUTEX_H */