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diff -Nur linux-3.10-nds32.orig/arch/nds32/include/asm/futex.h linux-3.10-nds32/arch/nds32/include/asm/futex.h
--- linux-3.10-nds32.orig/arch/nds32/include/asm/futex.h 2017-07-31 07:41:18.000000000 +0200
+++ linux-3.10-nds32/arch/nds32/include/asm/futex.h 2019-10-15 22:59:44.514997184 +0200
@@ -24,10 +24,10 @@
#define __futex_atomic_op(insn, ret, oldval, tmp, uaddr, oparg) \
smp_mb(); \
asm volatile( \
- " movi $r15, #0\n" \
- "1: llw %1, [%2+$r15]\n" \
+ " movi $ta, #0\n" \
+ "1: llw %1, [%2+$ta]\n" \
" " insn "\n" \
- "2: scw %0, [%2+$r15]\n" \
+ "2: scw %0, [%2+$ta]\n" \
" beqz %0, 1b\n" \
" movi %0, #0\n" \
"3:\n" \
@@ -47,18 +47,18 @@
smp_mb();
asm volatile(
- " movi $r15, #0\n"
- "1: llw %1, [%6 + $r15]\n"
+ " movi $ta, #0\n"
+ "1: llw %1, [%6 + $ta]\n"
" sub %3, %1, %4\n"
" cmovz %2, %5, %3\n"
" cmovn %2, %1, %3\n"
- "2: scw %2, [%6 + $r15]\n"
+ "2: scw %2, [%6 + $ta]\n"
" beqz %2, 1b\n"
"3:\n "
__futex_atomic_ex_table("%7")
: "+&r" (ret), "=&r" (val), "=&r" (tmp), "=&r" (flags)
: "r" (oldval), "r" (newval), "r" (uaddr), "i" (-EFAULT)
- : "$r15", "memory");
+ : "$ta", "memory");
smp_mb();
*uval = val;
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