mac_ppc.h File Reference

#include <stdint.h>
#include <unistd.h>

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Go to the source code of this file.

Namespaces
	tbb
	The graph class.
	tbb::internal
	Identifiers declared inside namespace internal should never be used directly by client code.

Macros
#define	__TBB_WORDSIZE   4
#define	__TBB_ENDIANNESS   __TBB_ENDIAN_DETECT
#define	__TBB_64BIT_ATOMICS   0
#define	__TBB_MACHINE_DEFINE_LOAD_STORE(S, ldx, stx, cmpx)
#define	__TBB_USE_GENERIC_PART_WORD_CAS   1
#define	__TBB_USE_GENERIC_FETCH_ADD   1
#define	__TBB_USE_GENERIC_FETCH_STORE   1
#define	__TBB_USE_GENERIC_SEQUENTIAL_CONSISTENCY_LOAD_STORE   1
#define	__TBB_control_consistency_helper()   __asm__ __volatile__("isync": : :"memory")
#define	__TBB_full_memory_fence()   __asm__ __volatile__( "sync": : :"memory")
#define	__TBB_Log2(V)   __TBB_machine_lg(V)
#define	__TBB_Flag   __TBB_Flag
#define	__TBB_TryLockByte(P)   __TBB_machine_trylockbyte(P)

Typedefs
typedef uint32_t	__TBB_Flag

Functions
int32_t	__TBB_machine_cmpswp4 (volatile void *ptr, int32_t value, int32_t comparand)
static intptr_t	__TBB_machine_lg (uintptr_t x)
bool	__TBB_machine_trylockbyte (__TBB_atomic __TBB_Flag &flag)

Macro Definition Documentation

__TBB_64BIT_ATOMICS

#define __TBB_64BIT_ATOMICS   0

Definition at line 69 of file mac_ppc.h.

__TBB_control_consistency_helper

#define __TBB_control_consistency_helper

(

)

__asm__ __volatile__("isync": : :"memory")

Definition at line 286 of file mac_ppc.h.

__TBB_ENDIANNESS

#define __TBB_ENDIANNESS   __TBB_ENDIAN_DETECT

Definition at line 49 of file mac_ppc.h.

__TBB_Flag

#define __TBB_Flag   __TBB_Flag

Definition at line 304 of file mac_ppc.h.

__TBB_full_memory_fence

#define __TBB_full_memory_fence

(

)

__asm__ __volatile__( "sync": : :"memory")

Definition at line 287 of file mac_ppc.h.

__TBB_Log2

#define __TBB_Log2

(

V

)

__TBB_machine_lg(V)

Definition at line 300 of file mac_ppc.h.

__TBB_MACHINE_DEFINE_LOAD_STORE

#define __TBB_MACHINE_DEFINE_LOAD_STORE	(		S,
			ldx,
			stx,
			cmpx
	)

Definition at line 156 of file mac_ppc.h.

__TBB_TryLockByte

#define __TBB_TryLockByte

(

P

)

__TBB_machine_trylockbyte(P)

Definition at line 309 of file mac_ppc.h.

__TBB_USE_GENERIC_FETCH_ADD

#define __TBB_USE_GENERIC_FETCH_ADD   1

Definition at line 282 of file mac_ppc.h.

__TBB_USE_GENERIC_FETCH_STORE

#define __TBB_USE_GENERIC_FETCH_STORE   1

Definition at line 283 of file mac_ppc.h.

__TBB_USE_GENERIC_PART_WORD_CAS

#define __TBB_USE_GENERIC_PART_WORD_CAS   1

Definition at line 281 of file mac_ppc.h.

__TBB_USE_GENERIC_SEQUENTIAL_CONSISTENCY_LOAD_STORE

#define __TBB_USE_GENERIC_SEQUENTIAL_CONSISTENCY_LOAD_STORE   1

Definition at line 284 of file mac_ppc.h.

__TBB_WORDSIZE

#define __TBB_WORDSIZE   4

Definition at line 35 of file mac_ppc.h.

Typedef Documentation

__TBB_Flag

typedef uint32_t __TBB_Flag

Definition at line 303 of file mac_ppc.h.

Function Documentation

__TBB_machine_cmpswp4()

int32_t __TBB_machine_cmpswp4 ( volatile void *  ptr, int32_t  value, int32_t  comparand  )

inline

Definition at line 73 of file mac_ppc.h.

{
    int32_t result;

    __asm__ __volatile__("sync\n"
                         "0:\n\t"
                         "lwarx %[res],0,%[ptr]\n\t"     /* load w/ reservation */
                         "cmpw %[res],%[cmp]\n\t"        /* compare against comparand */
                         "bne- 1f\n\t"                   /* exit if not same */
                         "stwcx. %[val],0,%[ptr]\n\t"    /* store new value */
                         "bne- 0b\n"                     /* retry if reservation lost */
                         "1:\n\t"                        /* the exit */
                         "isync"
                         : [res]"=&r"(result)
                         , "+m"(* (int32_t*) ptr)        /* redundant with "memory" */
                         : [ptr]"r"(ptr)
                         , [val]"r"(value)
                         , [cmp]"r"(comparand)
                         : "memory"                      /* compiler full fence */
                         , "cr0"                         /* clobbered by cmp and/or stwcx. */
                         );
    return result;
}

References value.

Referenced by __TBB_machine_trylockbyte().

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__TBB_machine_lg()

static intptr_t __TBB_machine_lg ( uintptr_t  x )

inlinestatic

Definition at line 289 of file mac_ppc.h.

                                                       {
    __TBB_ASSERT(x, "__TBB_Log2(0) undefined");
    // cntlzd/cntlzw starts counting at 2^63/2^31 (ignoring any higher-order bits), and does not affect cr0
#if __TBB_WORDSIZE==8
    __asm__ __volatile__ ("cntlzd %0,%0" : "+r"(x));
    return 63-static_cast<intptr_t>(x);
#else
    __asm__ __volatile__ ("cntlzw %0,%0" : "+r"(x));
    return 31-static_cast<intptr_t>(x);
#endif
}

References __TBB_ASSERT.

__TBB_machine_trylockbyte()

bool __TBB_machine_trylockbyte ( __TBB_atomic __TBB_Flag &  flag )

inline

Definition at line 306 of file mac_ppc.h.

                                                                       {
    return __TBB_machine_cmpswp4(&flag,1,0)==0;
}

References __TBB_machine_cmpswp4().

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