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Diffstat (limited to 'include/asm-sparc/futex_64.h')
-rw-r--r--include/asm-sparc/futex_64.h110
1 files changed, 0 insertions, 110 deletions
diff --git a/include/asm-sparc/futex_64.h b/include/asm-sparc/futex_64.h
deleted file mode 100644
index d8378935ae90..000000000000
--- a/include/asm-sparc/futex_64.h
+++ /dev/null
@@ -1,110 +0,0 @@
-#ifndef _SPARC64_FUTEX_H
-#define _SPARC64_FUTEX_H
-
-#include <linux/futex.h>
-#include <linux/uaccess.h>
-#include <asm/errno.h>
-#include <asm/system.h>
-
-#define __futex_cas_op(insn, ret, oldval, uaddr, oparg) \
- __asm__ __volatile__( \
- "\n1: lduwa [%3] %%asi, %2\n" \
- " " insn "\n" \
- "2: casa [%3] %%asi, %2, %1\n" \
- " cmp %2, %1\n" \
- " bne,pn %%icc, 1b\n" \
- " mov 0, %0\n" \
- "3:\n" \
- " .section .fixup,#alloc,#execinstr\n" \
- " .align 4\n" \
- "4: sethi %%hi(3b), %0\n" \
- " jmpl %0 + %%lo(3b), %%g0\n" \
- " mov %5, %0\n" \
- " .previous\n" \
- " .section __ex_table,\"a\"\n" \
- " .align 4\n" \
- " .word 1b, 4b\n" \
- " .word 2b, 4b\n" \
- " .previous\n" \
- : "=&r" (ret), "=&r" (oldval), "=&r" (tem) \
- : "r" (uaddr), "r" (oparg), "i" (-EFAULT) \
- : "memory")
-
-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, tem;
-
- if (unlikely(!access_ok(VERIFY_WRITE, uaddr, sizeof(int))))
- return -EFAULT;
- if (unlikely((((unsigned long) uaddr) & 0x3UL)))
- return -EINVAL;
-
- if (encoded_op & (FUTEX_OP_OPARG_SHIFT << 28))
- oparg = 1 << oparg;
-
- pagefault_disable();
-
- switch (op) {
- case FUTEX_OP_SET:
- __futex_cas_op("mov\t%4, %1", ret, oldval, uaddr, oparg);
- break;
- case FUTEX_OP_ADD:
- __futex_cas_op("add\t%2, %4, %1", ret, oldval, uaddr, oparg);
- break;
- case FUTEX_OP_OR:
- __futex_cas_op("or\t%2, %4, %1", ret, oldval, uaddr, oparg);
- break;
- case FUTEX_OP_ANDN:
- __futex_cas_op("and\t%2, %4, %1", ret, oldval, uaddr, oparg);
- break;
- case FUTEX_OP_XOR:
- __futex_cas_op("xor\t%2, %4, %1", 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(int __user *uaddr, int oldval, int newval)
-{
- __asm__ __volatile__(
- "\n1: casa [%3] %%asi, %2, %0\n"
- "2:\n"
- " .section .fixup,#alloc,#execinstr\n"
- " .align 4\n"
- "3: sethi %%hi(2b), %0\n"
- " jmpl %0 + %%lo(2b), %%g0\n"
- " mov %4, %0\n"
- " .previous\n"
- " .section __ex_table,\"a\"\n"
- " .align 4\n"
- " .word 1b, 3b\n"
- " .previous\n"
- : "=r" (newval)
- : "0" (newval), "r" (oldval), "r" (uaddr), "i" (-EFAULT)
- : "memory");
-
- return newval;
-}
-
-#endif /* !(_SPARC64_FUTEX_H) */