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- #ifndef _PT_MACHINE_H
- #define _PT_MACHINE_H 1
- #include <features.h>
- #include <ia64intrin.h>
- #include <sys/types.h>
- extern int __clone2 (int (*__fn) (void *__arg), void *__child_stack_base,
- size_t __child_stack_size, int __flags, void *__arg, ...);
- #ifndef PT_EI
- # define PT_EI __extern_always_inline
- #endif
- #define __atomic_fool_gcc(x) (*(volatile struct { int a[100]; } *)x)
- #ifndef ELF_MACHINE_NAME
- #define NEED_SEPARATE_REGISTER_STACK
- #define FLOATING_STACKS 1
- #define ARCH_STACK_MAX_SIZE 32*1024*1024
- #define CURRENT_STACK_FRAME stack_pointer
- register char *stack_pointer __asm__ ("sp");
- struct _pthread_descr_struct;
- register struct _pthread_descr_struct *__thread_self __asm__("r13");
- #define THREAD_SELF __thread_self
- #define INIT_THREAD_SELF(descr, nr) (__thread_self = (descr))
- #define THREAD_GETMEM(descr, member) \
- ((void) sizeof (descr), THREAD_SELF->member)
- #define THREAD_GETMEM_NC(descr, member) \
- ((void) sizeof (descr), THREAD_SELF->member)
- #define THREAD_SETMEM(descr, member, value) \
- ((void) sizeof (descr), THREAD_SELF->member = (value))
- #define THREAD_SETMEM_NC(descr, member, value) \
- ((void) sizeof (descr), THREAD_SELF->member = (value))
- #define MEMORY_BARRIER() __sync_synchronize ()
- #define HAS_COMPARE_AND_SWAP_WITH_RELEASE_SEMANTICS
- PT_EI int
- __compare_and_swap (long int *p, long int oldval, long int newval)
- {
- long int readval;
- __asm__ __volatile__
- ("mov ar.ccv=%4;;\n\t"
- "cmpxchg8.acq %0=%1,%2,ar.ccv"
- : "=r" (readval), "=m" (__atomic_fool_gcc (p))
- : "r"(newval), "m" (__atomic_fool_gcc (p)), "r" (oldval)
- : "memory");
- return readval == oldval;
- }
- PT_EI int
- __compare_and_swap_with_release_semantics (long int *p,
- long int oldval,
- long int newval)
- {
- long int readval;
- __asm__ __volatile__
- ("mov ar.ccv=%4;;\n\t"
- "cmpxchg8.rel %0=%1,%2,ar.ccv"
- : "=r" (readval), "=m" (__atomic_fool_gcc (p))
- : "r"(newval), "m" (__atomic_fool_gcc (p)), "r" (oldval)
- : "memory");
- return readval == oldval;
- }
- #endif
- PT_EI long int
- testandset (int *spinlock)
- {
- long int ret;
- __asm__ __volatile__(
- "xchg4 %0=%1,%2"
- : "=r"(ret), "=m"(__atomic_fool_gcc (spinlock))
- : "r"(1), "m"(__atomic_fool_gcc (spinlock))
- : "memory");
- return ret;
- }
- #define BUSY_WAIT_NOP __asm__ ("hint @pause")
- #endif
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