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/* Copyright (C) 2003 Free Software Foundation, Inc.
This file is part of the GNU C Library.
The GNU C Library is free software; you can redistribute it and/or
modify it under the terms of the GNU Lesser General Public
License as published by the Free Software Foundation; either
version 2.1 of the License, or (at your option) any later version.
The GNU C Library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public
License along with the GNU C Library; if not, write to the Free
Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
02111-1307 USA. */
#include <stdint.h>
typedef int8_t atomic8_t;
typedef uint8_t uatomic8_t;
typedef int_fast8_t atomic_fast8_t;
typedef uint_fast8_t uatomic_fast8_t;
typedef int16_t atomic16_t;
typedef uint16_t uatomic16_t;
typedef int_fast16_t atomic_fast16_t;
typedef uint_fast16_t uatomic_fast16_t;
typedef int32_t atomic32_t;
typedef uint32_t uatomic32_t;
typedef int_fast32_t atomic_fast32_t;
typedef uint_fast32_t uatomic_fast32_t;
typedef int64_t atomic64_t;
typedef uint64_t uatomic64_t;
typedef int_fast64_t atomic_fast64_t;
typedef uint_fast64_t uatomic_fast64_t;
typedef intptr_t atomicptr_t;
typedef uintptr_t uatomicptr_t;
typedef intmax_t atomic_max_t;
typedef uintmax_t uatomic_max_t;
#define __arch_compare_and_exchange_val_8_acq(mem, newval, oldval) \
({ __typeof (*mem) __result; \
__asm __volatile ("\
.align 2\n\
mova 1f,r0\n\
nop\n\
mov r15,r1\n\
mov #-8,r15\n\
0: mov.b @%1,%0\n\
cmp/eq %0,%3\n\
bf 1f\n\
mov.b %2,@%1\n\
1: mov r1,r15"\
: "=&r" (__result) : "r" (mem), "r" (newval), "r" (oldval) \
: "r0", "r1", "t", "memory"); \
__result; })
#define __arch_compare_and_exchange_val_16_acq(mem, newval, oldval) \
({ __typeof (*mem) __result; \
__asm __volatile ("\
.align 2\n\
mova 1f,r0\n\
nop\n\
mov r15,r1\n\
mov #-8,r15\n\
0: mov.w @%1,%0\n\
cmp/eq %0,%3\n\
bf 1f\n\
mov.w %2,@%1\n\
1: mov r1,r15"\
: "=&r" (__result) : "r" (mem), "r" (newval), "r" (oldval) \
: "r0", "r1", "t", "memory"); \
__result; })
#define __arch_compare_and_exchange_val_32_acq(mem, newval, oldval) \
({ __typeof (*mem) __result; \
__asm __volatile ("\
.align 2\n\
mova 1f,r0\n\
nop\n\
mov r15,r1\n\
mov #-8,r15\n\
0: mov.l @%1,%0\n\
cmp/eq %0,%3\n\
bf 1f\n\
mov.l %2,@%1\n\
1: mov r1,r15"\
: "=&r" (__result) : "r" (mem), "r" (newval), "r" (oldval) \
: "r0", "r1", "t", "memory"); \
__result; })
/* XXX We do not really need 64-bit compare-and-exchange. At least
not in the moment. Using it would mean causing portability
problems since not many other 32-bit architectures have support for
such an operation. So don't define any code for now. */
# define __arch_compare_and_exchange_val_64_acq(mem, newval, oldval) \
(abort (), 0)
#define atomic_exchange_and_add(mem, value) \
({ __typeof (*mem) __result; \
__typeof (value) __value; \
if (sizeof (*mem) == 1) \
__asm __volatile ("\
.align 2\n\
mova 1f,r0\n\
mov r15,r1\n\
mov #-6,r15\n\
0: mov.b @%2,%0\n\
add %0,%1\n\
mov.b %1,@%2\n\
1: mov r1,r15"\
: "=&r" (__result), "=&r" (__value) : "r" (mem), "1" (value) \
: "r0", "r1", "memory"); \
else if (sizeof (*mem) == 2) \
__asm __volatile ("\
.align 2\n\
mova 1f,r0\n\
mov r15,r1\n\
mov #-6,r15\n\
0: mov.w @%2,%0\n\
add %0,%1\n\
mov.w %1,@%2\n\
1: mov r1,r15"\
: "=&r" (__result), "=&r" (__value) : "r" (mem), "1" (value) \
: "r0", "r1", "memory"); \
else if (sizeof (*mem) == 4) \
__asm __volatile ("\
.align 2\n\
mova 1f,r0\n\
mov r15,r1\n\
mov #-6,r15\n\
0: mov.l @%2,%0\n\
add %0,%1\n\
mov.l %1,@%2\n\
1: mov r1,r15"\
: "=&r" (__result), "=&r" (__value) : "r" (mem), "1" (value) \
: "r0", "r1", "memory"); \
else \
{ \
__typeof (value) addval = (value); \
__typeof (mem) memp = (mem); \
do \
__result = *memp; \
while (__arch_compare_and_exchange_val_64_acq \
(memp, __result + addval, __result) == __result); \
(void) addval; \
} \
__result; })
#define atomic_add(mem, value) \
(void) ({ __typeof (value) __value; \
if (sizeof (*mem) == 1) \
__asm __volatile ("\
.align 2\n\
mova 1f,r0\n\
mov r15,r1\n\
mov #-6,r15\n\
0: mov.b @%1,r2\n\
add r2,%0\n\
mov.b %0,@%1\n\
1: mov r1,r15"\
: "=&r" (__value) : "r" (mem), "0" (value) \
: "r0", "r1", "r2", "memory"); \
else if (sizeof (*mem) == 2) \
__asm __volatile ("\
.align 2\n\
mova 1f,r0\n\
mov r15,r1\n\
mov #-6,r15\n\
0: mov.w @%1,r2\n\
add r2,%0\n\
mov.w %0,@%1\n\
1: mov r1,r15"\
: "=&r" (__value) : "r" (mem), "0" (value) \
: "r0", "r1", "r2", "memory"); \
else if (sizeof (*mem) == 4) \
__asm __volatile ("\
.align 2\n\
mova 1f,r0\n\
mov r15,r1\n\
mov #-6,r15\n\
0: mov.l @%1,r2\n\
add r2,%0\n\
mov.l %0,@%1\n\
1: mov r1,r15"\
: "=&r" (__value) : "r" (mem), "0" (value) \
: "r0", "r1", "r2", "memory"); \
else \
{ \
__typeof (value) addval = (value); \
__typeof (*mem) oldval; \
__typeof (mem) memp = (mem); \
do \
oldval = *memp; \
while (__arch_compare_and_exchange_val_64_acq \
(memp, oldval + addval, oldval) == oldval); \
(void) addval; \
} \
})
#define atomic_add_negative(mem, value) \
({ unsigned char __result; \
__typeof (value) __value; \
if (sizeof (*mem) == 1) \
__asm __volatile ("\
.align 2\n\
mova 1f,r0\n\
mov r15,r1\n\
mov #-6,r15\n\
0: mov.b @%2,r2\n\
add r2,%1\n\
mov.b %1,@%2\n\
1: mov r1,r15\n\
shal %1\n\
movt %0"\
: "=r" (__result), "=&r" (__value) : "r" (mem), "1" (value) \
: "r0", "r1", "r2", "t", "memory"); \
else if (sizeof (*mem) == 2) \
__asm __volatile ("\
.align 2\n\
mova 1f,r0\n\
mov r15,r1\n\
mov #-6,r15\n\
0: mov.w @%2,r2\n\
add r2,%1\n\
mov.w %1,@%2\n\
1: mov r1,r15\n\
shal %1\n\
movt %0"\
: "=r" (__result), "=&r" (__value) : "r" (mem), "1" (value) \
: "r0", "r1", "r2", "t", "memory"); \
else if (sizeof (*mem) == 4) \
__asm __volatile ("\
.align 2\n\
mova 1f,r0\n\
mov r15,r1\n\
mov #-6,r15\n\
0: mov.l @%2,r2\n\
add r2,%1\n\
mov.l %1,@%2\n\
1: mov r1,r15\n\
shal %1\n\
movt %0"\
: "=r" (__result), "=&r" (__value) : "r" (mem), "1" (value) \
: "r0", "r1", "r2", "t", "memory"); \
else \
abort (); \
__result; })
#define atomic_add_zero(mem, value) \
({ unsigned char __result; \
__typeof (value) __value; \
if (sizeof (*mem) == 1) \
__asm __volatile ("\
.align 2\n\
mova 1f,r0\n\
mov r15,r1\n\
mov #-6,r15\n\
0: mov.b @%2,r2\n\
add r2,%1\n\
mov.b %1,@%2\n\
1: mov r1,r15\n\
tst %1,%1\n\
movt %0"\
: "=r" (__result), "=&r" (__value) : "r" (mem), "1" (value) \
: "r0", "r1", "r2", "t", "memory"); \
else if (sizeof (*mem) == 2) \
__asm __volatile ("\
.align 2\n\
mova 1f,r0\n\
mov r15,r1\n\
mov #-6,r15\n\
0: mov.w @%2,r2\n\
add r2,%1\n\
mov.w %1,@%2\n\
1: mov r1,r15\n\
tst %1,%1\n\
movt %0"\
: "=r" (__result), "=&r" (__value) : "r" (mem), "1" (value) \
: "r0", "r1", "r2", "t", "memory"); \
else if (sizeof (*mem) == 4) \
__asm __volatile ("\
.align 2\n\
mova 1f,r0\n\
mov r15,r1\n\
mov #-6,r15\n\
0: mov.l @%2,r2\n\
add r2,%1\n\
mov.l %1,@%2\n\
1: mov r1,r15\n\
tst %1,%1\n\
movt %0"\
: "=r" (__result), "=&r" (__value) : "r" (mem), "1" (value) \
: "r0", "r1", "r2", "t", "memory"); \
else \
abort (); \
__result; })
#define atomic_increment_and_test(mem) atomic_add_zero((mem), 1)
#define atomic_decrement_and_test(mem) atomic_add_zero((mem), -1)
#define atomic_bit_set(mem, bit) \
(void) ({ unsigned int __mask = 1 << (bit); \
if (sizeof (*mem) == 1) \
__asm __volatile ("\
.align 2\n\
mova 1f,r0\n\
mov r15,r1\n\
mov #-6,r15\n\
0: mov.b @%0,r2\n\
or %1,r2\n\
mov.b r2,@%0\n\
1: mov r1,r15"\
: : "r" (mem), "r" (__mask) \
: "r0", "r1", "r2", "memory"); \
else if (sizeof (*mem) == 2) \
__asm __volatile ("\
.align 2\n\
mova 1f,r0\n\
mov r15,r1\n\
mov #-6,r15\n\
0: mov.w @%0,r2\n\
or %1,r2\n\
mov.w r2,@%0\n\
1: mov r1,r15"\
: : "r" (mem), "r" (__mask) \
: "r0", "r1", "r2", "memory"); \
else if (sizeof (*mem) == 4) \
__asm __volatile ("\
.align 2\n\
mova 1f,r0\n\
mov r15,r1\n\
mov #-6,r15\n\
0: mov.l @%0,r2\n\
or %1,r2\n\
mov.l r2,@%0\n\
1: mov r1,r15"\
: : "r" (mem), "r" (__mask) \
: "r0", "r1", "r2", "memory"); \
else \
abort (); \
})
#define atomic_bit_test_set(mem, bit) \
({ unsigned int __mask = 1 << (bit); \
unsigned int __result = __mask; \
if (sizeof (*mem) == 1) \
__asm __volatile ("\
.align 2\n\
mova 1f,r0\n\
nop\n\
mov r15,r1\n\
mov #-8,r15\n\
0: mov.b @%2,r2\n\
or r2,%1\n\
and r2,%0\n\
mov.b %1,@%2\n\
1: mov r1,r15"\
: "=&r" (__result), "=&r" (__mask) \
: "r" (mem), "0" (__result), "1" (__mask) \
: "r0", "r1", "r2", "memory"); \
else if (sizeof (*mem) == 2) \
__asm __volatile ("\
.align 2\n\
mova 1f,r0\n\
nop\n\
mov r15,r1\n\
mov #-8,r15\n\
0: mov.w @%2,r2\n\
or r2,%1\n\
and r2,%0\n\
mov.w %1,@%2\n\
1: mov r1,r15"\
: "=&r" (__result), "=&r" (__mask) \
: "r" (mem), "0" (__result), "1" (__mask) \
: "r0", "r1", "r2", "memory"); \
else if (sizeof (*mem) == 4) \
__asm __volatile ("\
.align 2\n\
mova 1f,r0\n\
nop\n\
mov r15,r1\n\
mov #-8,r15\n\
0: mov.l @%2,r2\n\
or r2,%1\n\
and r2,%0\n\
mov.l %1,@%2\n\
1: mov r1,r15"\
: "=&r" (__result), "=&r" (__mask) \
: "r" (mem), "0" (__result), "1" (__mask) \
: "r0", "r1", "r2", "memory"); \
else \
abort (); \
__result; })
|
