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/* $Id$
*
* This is a C file for a reason. The Sun C++ compiler does not accept
* inline assembler.
*
* Portions of this code are based on atomic operations found in the
* linux kernel source code.
*/
#if defined (ACE_INCLUDE_ATOMIC_OP_SPARC)
# if defined (__sparcv9)
unsigned long
ace_atomic_add_long (volatile unsigned long *dest, long rhs)
{
__asm ("restore\n"
"ldx [%o0], %o2\n"
".again_add:\n"
"add %o2, %o1, %o3\n"
"casx [%o0], %o2, %o3\n"
"cmp %o2, %o3\n"
"bne,pn %xcc, .again_add\n"
"mov %o3, %o2\n"
"retl\n"
"add %o2, %o1, %o0\n");
}
unsigned long
ace_atomic_swap_long (volatile unsigned long *dest, unsigned long rhs)
{
__asm ("restore\n"
"ldx [%o0], %o2\n"
".again_swap:\n"
"mov %o1, %o3\n"
"casx [%o0], %o2, %o3\n"
"cmp %o2, %o3\n"
"bne,pn %xcc, .again_swap\n"
"mov %o3, %o2\n"
"retl\n"
"mov %o3, %o0\n");
}
unsigned long
ace_atomic_swap_add_long (volatile unsigned long *dest, long rhs)
{
__asm ("restore\n"
"ldx [%o0], %o2\n"
".again_swap_add:\n"
"mov %o2, %o4\n"
"add %o2, %o1, %o3\n"
"casx [%o0], %o2, %o3\n"
"cmp %o2, %o3\n"
"bne,pn %xcc, .again_swap_add\n"
"mov %o3, %o2\n"
"retl\n"
"mov %o4, %o0\n");
}
#else
unsigned long
ace_atomic_add_long (volatile unsigned long *dest, long rhs)
{
__asm ("restore\n"
"ld [%o0], %o2\n"
".again_add:\n"
"add %o2, %o1, %o3\n"
"cas [%o0], %o2, %o3\n"
"cmp %o2, %o3\n"
"bne,pn %icc, .again_add\n"
"mov %o3, %o2\n"
"retl\n"
"add %o2, %o1, %o0\n");
}
unsigned long
ace_atomic_swap_long (volatile unsigned long *dest, unsigned long rhs)
{
__asm ("restore\n"
"ld [%o0], %o2\n"
".again_swap:\n"
"mov %o1, %o3\n"
"cas [%o0], %o2, %o3\n"
"cmp %o2, %o3\n"
"bne,pn %icc, .again_swap\n"
"mov %o3, %o2\n"
"retl\n"
"mov %o3, %o0\n");
}
unsigned long
ace_atomic_swap_add_long (volatile unsigned long *dest, long rhs)
{
__asm ("restore\n"
"ld [%o0], %o2\n"
".again_swap_add:\n"
"mov %o2, %o4\n"
"add %o2, %o1, %o3\n"
"cas [%o0], %o2, %o3\n"
"cmp %o2, %o3\n"
"bne,pn %icc, .again_swap_add\n"
"mov %o3, %o2\n"
"retl\n"
"mov %o4, %o0\n");
}
# endif /* __sparcv9 */
#elif !defined (__GNUC__)
/* Make compilers stop complaining about an empty translation unit */
static int shut_up_compiler = 0;
#endif /* ACE_INCLUDE_ATOMIC_OP_SPARC */
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