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MIPS: Quit using undefined behavior of ADDU in 64-bit atomic operations. 

For 64-bit, we must use DADDU and DSUBU.

Signed-off-by: David Daney <ddaney@caviumnetworks.com>
To: linux-mips@linux-mips.org
Patchwork: https://patchwork.linux-mips.org/patch/1483/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
This commit is contained in:
David Daney 2010-07-22 11:59:27 -07:00 коммит произвёл Ralf Baechle
Родитель 31c984a5ac
Коммит f2a68272d7
1 изменённых файлов: 12 добавлений и 12 удалений
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24
arch/mips/include/asm/atomic.h
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@ -434,7 +434,7 @@ static __inline__ void atomic64_add(long i, atomic64_t * v)
__asm__ __volatile__( __asm__ __volatile__(
" .set mips3 \n" " .set mips3 \n"
"1: lld %0, %1 # atomic64_add \n" "1: lld %0, %1 # atomic64_add \n"
" addu %0, %2 \n" " daddu %0, %2 \n"
" scd %0, %1 \n" " scd %0, %1 \n"
" beqzl %0, 1b \n" " beqzl %0, 1b \n"
" .set mips0 \n" " .set mips0 \n"
@ -446,7 +446,7 @@ static __inline__ void atomic64_add(long i, atomic64_t * v)
__asm__ __volatile__( __asm__ __volatile__(
" .set mips3 \n" " .set mips3 \n"
"1: lld %0, %1 # atomic64_add \n" "1: lld %0, %1 # atomic64_add \n"
" addu %0, %2 \n" " daddu %0, %2 \n"
" scd %0, %1 \n" " scd %0, %1 \n"
" beqz %0, 2f \n" " beqz %0, 2f \n"
" .subsection 2 \n" " .subsection 2 \n"
@ -479,7 +479,7 @@ static __inline__ void atomic64_sub(long i, atomic64_t * v)
__asm__ __volatile__( __asm__ __volatile__(
" .set mips3 \n" " .set mips3 \n"
"1: lld %0, %1 # atomic64_sub \n" "1: lld %0, %1 # atomic64_sub \n"
" subu %0, %2 \n" " dsubu %0, %2 \n"
" scd %0, %1 \n" " scd %0, %1 \n"
" beqzl %0, 1b \n" " beqzl %0, 1b \n"
" .set mips0 \n" " .set mips0 \n"
@ -491,7 +491,7 @@ static __inline__ void atomic64_sub(long i, atomic64_t * v)
__asm__ __volatile__( __asm__ __volatile__(
" .set mips3 \n" " .set mips3 \n"
"1: lld %0, %1 # atomic64_sub \n" "1: lld %0, %1 # atomic64_sub \n"
" subu %0, %2 \n" " dsubu %0, %2 \n"
" scd %0, %1 \n" " scd %0, %1 \n"
" beqz %0, 2f \n" " beqz %0, 2f \n"
" .subsection 2 \n" " .subsection 2 \n"
@ -524,10 +524,10 @@ static __inline__ long atomic64_add_return(long i, atomic64_t * v)
__asm__ __volatile__( __asm__ __volatile__(
" .set mips3 \n" " .set mips3 \n"
"1: lld %1, %2 # atomic64_add_return \n" "1: lld %1, %2 # atomic64_add_return \n"
" addu %0, %1, %3 \n" " daddu %0, %1, %3 \n"
" scd %0, %2 \n" " scd %0, %2 \n"
" beqzl %0, 1b \n" " beqzl %0, 1b \n"
" addu %0, %1, %3 \n" " daddu %0, %1, %3 \n"
" .set mips0 \n" " .set mips0 \n"
: "=&r" (result), "=&r" (temp), "=m" (v->counter) : "=&r" (result), "=&r" (temp), "=m" (v->counter)
: "Ir" (i), "m" (v->counter) : "Ir" (i), "m" (v->counter)
@ -538,10 +538,10 @@ static __inline__ long atomic64_add_return(long i, atomic64_t * v)
__asm__ __volatile__( __asm__ __volatile__(
" .set mips3 \n" " .set mips3 \n"
"1: lld %1, %2 # atomic64_add_return \n" "1: lld %1, %2 # atomic64_add_return \n"
" addu %0, %1, %3 \n" " daddu %0, %1, %3 \n"
" scd %0, %2 \n" " scd %0, %2 \n"
" beqz %0, 2f \n" " beqz %0, 2f \n"
" addu %0, %1, %3 \n" " daddu %0, %1, %3 \n"
" .subsection 2 \n" " .subsection 2 \n"
"2: b 1b \n" "2: b 1b \n"
" .previous \n" " .previous \n"
@ -576,10 +576,10 @@ static __inline__ long atomic64_sub_return(long i, atomic64_t * v)
__asm__ __volatile__( __asm__ __volatile__(
" .set mips3 \n" " .set mips3 \n"
"1: lld %1, %2 # atomic64_sub_return \n" "1: lld %1, %2 # atomic64_sub_return \n"
" subu %0, %1, %3 \n" " dsubu %0, %1, %3 \n"
" scd %0, %2 \n" " scd %0, %2 \n"
" beqzl %0, 1b \n" " beqzl %0, 1b \n"
" subu %0, %1, %3 \n" " dsubu %0, %1, %3 \n"
" .set mips0 \n" " .set mips0 \n"
: "=&r" (result), "=&r" (temp), "=m" (v->counter) : "=&r" (result), "=&r" (temp), "=m" (v->counter)
: "Ir" (i), "m" (v->counter) : "Ir" (i), "m" (v->counter)
@ -590,10 +590,10 @@ static __inline__ long atomic64_sub_return(long i, atomic64_t * v)
__asm__ __volatile__( __asm__ __volatile__(
" .set mips3 \n" " .set mips3 \n"
"1: lld %1, %2 # atomic64_sub_return \n" "1: lld %1, %2 # atomic64_sub_return \n"
" subu %0, %1, %3 \n" " dsubu %0, %1, %3 \n"
" scd %0, %2 \n" " scd %0, %2 \n"
" beqz %0, 2f \n" " beqz %0, 2f \n"
" subu %0, %1, %3 \n" " dsubu %0, %1, %3 \n"
" .subsection 2 \n" " .subsection 2 \n"
"2: b 1b \n" "2: b 1b \n"
" .previous \n" " .previous \n"