OpenBLAS/common_arm.h

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/* Copyright 2009, 2010 The University of Texas at Austin.           */
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/* without modification, are permitted provided that the following   */
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/*********************************************************************/

#ifndef COMMON_ARM
#define COMMON_ARM

#define MB   __asm__ __volatile__ ("dmb  ish" : : : "memory")
#define WMB  __asm__ __volatile__ ("dmb  ishst" : : : "memory")

#define INLINE inline

#define RETURN_BY_COMPLEX

#ifndef ASSEMBLER

static void __inline blas_lock(volatile BLASULONG *address){

  int register ret;

  do {
    while (*address) {YIELDING;};

    __asm__ __volatile__(
			 "1:								\n\t"
                         "ldrex r2, [%1]                                                \n\t"
                         "mov   r2, #0                                                  \n\t"
                         "strex r3, r2, [%1]                                            \n\t"
			 "cmp	r3, #0							\n\t"
			 "bne	1b							\n\t"
			 "mov	%0 , r3							\n\t"
                         : "=r"(ret), "=r"(address)
                         : "1"(address)
                         : "memory", "r2" , "r3"


    );

  } while (ret);

}


static inline unsigned long long rpcc(void){
  unsigned long long ret=0;
  double v;
  struct timeval tv;
  gettimeofday(&tv,NULL);
  v=(double) tv.tv_sec + (double) tv.tv_usec * 1e-6;
  ret = (unsigned long long) ( v * 1000.0d );
  return ret;
}

static inline int blas_quickdivide(blasint x, blasint y){
  return x / y;
}

#if defined(DOUBLE)
#define GET_IMAGE(res)  __asm__ __volatile__("vstr.f64 d1, %0" : "=m"(res) : : "memory")
#else
#define GET_IMAGE(res)  __asm__ __volatile__("vstr.f32 s1, %0" : "=m"(res) : : "memory")
#endif

#define GET_IMAGE_CANCEL

#endif


#ifndef F_INTERFACE
#define REALNAME ASMNAME
#else
#define REALNAME ASMFNAME
#endif

#if defined(ASSEMBLER) && !defined(NEEDPARAM)

#define PROLOGUE \
	.arm		 ;\
	.global	REALNAME ;\
	.func	REALNAME  ;\
REALNAME:

#define EPILOGUE

#define PROFCODE

#endif


#define SEEK_ADDRESS

#ifndef PAGESIZE
#define PAGESIZE        ( 4 << 10)
#endif
#define HUGE_PAGESIZE   ( 4 << 20)

#define BUFFER_SIZE     (16 << 20)


#define BASE_ADDRESS (START_ADDRESS - BUFFER_SIZE * MAX_CPU_NUMBER)

#ifndef MAP_ANONYMOUS
#define MAP_ANONYMOUS MAP_ANON
#endif

#endif