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Diffstat (limited to 'arch/arm/include/asm/futex.h')
-rw-r--r--arch/arm/include/asm/futex.h34
1 files changed, 17 insertions, 17 deletions
diff --git a/arch/arm/include/asm/futex.h b/arch/arm/include/asm/futex.h
index 8c73900da9ed..253cc86318bf 100644
--- a/arch/arm/include/asm/futex.h
+++ b/arch/arm/include/asm/futex.h
@@ -25,17 +25,17 @@
25 25
26#ifdef CONFIG_SMP 26#ifdef CONFIG_SMP
27 27
28#define __futex_atomic_op(insn, ret, oldval, uaddr, oparg) \ 28#define __futex_atomic_op(insn, ret, oldval, tmp, uaddr, oparg) \
29 smp_mb(); \ 29 smp_mb(); \
30 __asm__ __volatile__( \ 30 __asm__ __volatile__( \
31 "1: ldrex %1, [%2]\n" \ 31 "1: ldrex %1, [%3]\n" \
32 " " insn "\n" \ 32 " " insn "\n" \
33 "2: strex %1, %0, [%2]\n" \ 33 "2: strex %2, %0, [%3]\n" \
34 " teq %1, #0\n" \ 34 " teq %2, #0\n" \
35 " bne 1b\n" \ 35 " bne 1b\n" \
36 " mov %0, #0\n" \ 36 " mov %0, #0\n" \
37 __futex_atomic_ex_table("%4") \ 37 __futex_atomic_ex_table("%5") \
38 : "=&r" (ret), "=&r" (oldval) \ 38 : "=&r" (ret), "=&r" (oldval), "=&r" (tmp) \
39 : "r" (uaddr), "r" (oparg), "Ir" (-EFAULT) \ 39 : "r" (uaddr), "r" (oparg), "Ir" (-EFAULT) \
40 : "cc", "memory") 40 : "cc", "memory")
41 41
@@ -73,14 +73,14 @@ futex_atomic_cmpxchg_inatomic(u32 *uval, u32 __user *uaddr,
73#include <linux/preempt.h> 73#include <linux/preempt.h>
74#include <asm/domain.h> 74#include <asm/domain.h>
75 75
76#define __futex_atomic_op(insn, ret, oldval, uaddr, oparg) \ 76#define __futex_atomic_op(insn, ret, oldval, tmp, uaddr, oparg) \
77 __asm__ __volatile__( \ 77 __asm__ __volatile__( \
78 "1: " T(ldr) " %1, [%2]\n" \ 78 "1: " T(ldr) " %1, [%3]\n" \
79 " " insn "\n" \ 79 " " insn "\n" \
80 "2: " T(str) " %0, [%2]\n" \ 80 "2: " T(str) " %0, [%3]\n" \
81 " mov %0, #0\n" \ 81 " mov %0, #0\n" \
82 __futex_atomic_ex_table("%4") \ 82 __futex_atomic_ex_table("%5") \
83 : "=&r" (ret), "=&r" (oldval) \ 83 : "=&r" (ret), "=&r" (oldval), "=&r" (tmp) \
84 : "r" (uaddr), "r" (oparg), "Ir" (-EFAULT) \ 84 : "r" (uaddr), "r" (oparg), "Ir" (-EFAULT) \
85 : "cc", "memory") 85 : "cc", "memory")
86 86
@@ -117,7 +117,7 @@ futex_atomic_op_inuser (int encoded_op, u32 __user *uaddr)
117 int cmp = (encoded_op >> 24) & 15; 117 int cmp = (encoded_op >> 24) & 15;
118 int oparg = (encoded_op << 8) >> 20; 118 int oparg = (encoded_op << 8) >> 20;
119 int cmparg = (encoded_op << 20) >> 20; 119 int cmparg = (encoded_op << 20) >> 20;
120 int oldval = 0, ret; 120 int oldval = 0, ret, tmp;
121 121
122 if (encoded_op & (FUTEX_OP_OPARG_SHIFT << 28)) 122 if (encoded_op & (FUTEX_OP_OPARG_SHIFT << 28))
123 oparg = 1 << oparg; 123 oparg = 1 << oparg;
@@ -129,19 +129,19 @@ futex_atomic_op_inuser (int encoded_op, u32 __user *uaddr)
129 129
130 switch (op) { 130 switch (op) {
131 case FUTEX_OP_SET: 131 case FUTEX_OP_SET:
132 __futex_atomic_op("mov %0, %3", ret, oldval, uaddr, oparg); 132 __futex_atomic_op("mov %0, %4", ret, oldval, tmp, uaddr, oparg);
133 break; 133 break;
134 case FUTEX_OP_ADD: 134 case FUTEX_OP_ADD:
135 __futex_atomic_op("add %0, %1, %3", ret, oldval, uaddr, oparg); 135 __futex_atomic_op("add %0, %1, %4", ret, oldval, tmp, uaddr, oparg);
136 break; 136 break;
137 case FUTEX_OP_OR: 137 case FUTEX_OP_OR:
138 __futex_atomic_op("orr %0, %1, %3", ret, oldval, uaddr, oparg); 138 __futex_atomic_op("orr %0, %1, %4", ret, oldval, tmp, uaddr, oparg);
139 break; 139 break;
140 case FUTEX_OP_ANDN: 140 case FUTEX_OP_ANDN:
141 __futex_atomic_op("and %0, %1, %3", ret, oldval, uaddr, ~oparg); 141 __futex_atomic_op("and %0, %1, %4", ret, oldval, tmp, uaddr, ~oparg);
142 break; 142 break;
143 case FUTEX_OP_XOR: 143 case FUTEX_OP_XOR:
144 __futex_atomic_op("eor %0, %1, %3", ret, oldval, uaddr, oparg); 144 __futex_atomic_op("eor %0, %1, %4", ret, oldval, tmp, uaddr, oparg);
145 break; 145 break;
146 default: 146 default:
147 ret = -ENOSYS; 147 ret = -ENOSYS;