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/*********************************************************************/
/* Copyright 2009, 2010 The University of Texas at Austin. */
/* All rights reserved. */
/* */
/* Redistribution and use in source and binary forms, with or */
/* without modification, are permitted provided that the following */
/* conditions are met: */
/* */
/* 1. Redistributions of source code must retain the above */
/* copyright notice, this list of conditions and the following */
/* disclaimer. */
/* */
/* 2. Redistributions in binary form must reproduce the above */
/* copyright notice, this list of conditions and the following */
/* disclaimer in the documentation and/or other materials */
/* provided with the distribution. */
/* */
/* THIS SOFTWARE IS PROVIDED BY THE UNIVERSITY OF TEXAS AT */
/* AUSTIN ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, */
/* INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF */
/* MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE */
/* DISCLAIMED. IN NO EVENT SHALL THE UNIVERSITY OF TEXAS AT */
/* AUSTIN OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, */
/* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES */
/* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE */
/* GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR */
/* BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF */
/* LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT */
/* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT */
/* OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE */
/* POSSIBILITY OF SUCH DAMAGE. */
/* */
/* The views and conclusions contained in the software and */
/* documentation are those of the authors and should not be */
/* interpreted as representing official policies, either expressed */
/* or implied, of The University of Texas at Austin. */
/*********************************************************************/

#ifndef COMMON_ALPHA
#define COMMON_ALPHA

#ifndef ASSEMBLER

#define MB asm("mb")
#define WMB asm("wmb")

static void __inline blas_lock(unsigned long *address){
#ifndef __DECC
  unsigned long tmp1, tmp2;
  asm volatile(
    "1: ldq %1, %0\n"
    " bne %1, 2f\n"
    " ldq_l %1, %0\n"
    " bne %1, 2f\n"
    " or %1, 1, %2\n"
    " stq_c %2, %0\n"
    " beq %2, 2f\n"
    " mb\n "
    " br $31, 3f\n"
    "2: br $31, 1b\n"
    "3:\n" : "=m"(*address), "=&r"(tmp1), "=&r"(tmp2) : : "memory");
#else
  asm (
    "10:"
    " ldq %t0, 0(%a0); "
    " bne %t0, 20f; "
    " ldq_l %t0, 0(%a0); "
    " bne %t0, 20f; "
    " or %t0, 1, %t1;"
    " stq_c %t1, 0(%a0); "
    " beq %t1, 20f; "
    " mb; "
    " br %r31,30f; "
    "20: "
    " br %r31,10b; "
    "30:", address);
#endif
}

static __inline unsigned int rpcc(void){

  unsigned int r0;

#ifndef __DECC
  asm __volatile__("rpcc %0" : "=r"(r0) : : "memory");
#else
  r0 = asm("rpcc %v0");
#endif

  return r0;
}


#define HALT ldq $0, 0($0)

#ifndef __DECC
#define GET_IMAGE(res) asm __volatile__("fmov $f1, %0" : "=f"(res) : : "memory")
#else
#define GET_IMAGE(res) res = dasm("fmov $f1, %f0")
#endif

#ifdef SMP
#ifdef USE64BITINT
static __inline long blas_quickdivide(long x, long y){
  return x/y;
}
#else
extern unsigned int blas_quick_divide_table[];

static __inline int blas_quickdivide(unsigned int x, unsigned int y){
  if (y <= 1) return x;
  return (int)((x * (unsigned long)blas_quick_divide_table[y]) >> 32);
}
#endif
#endif

#define BASE_ADDRESS ((0x1b0UL << 33) | (0x1c0UL << 23) | (0x000UL << 13))

#ifndef PAGESIZE
#define PAGESIZE ( 8UL << 10)
#define HUGE_PAGESIZE ( 4 << 20)
#endif
#define BUFFER_SIZE (32UL << 20)

#else

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

#define PROLOGUE \
.arch ev6; \
.set noat; \
.set noreorder; \
.text; \
.align 5; \
.globl REALNAME; \
.ent REALNAME; \
REALNAME:

#ifdef PROFILE
#define PROFCODE \
ldgp $gp, 0($27); \
lda $28, _mcount; \
jsr $28, ($28), _mcount; \
.prologue 1
#else
#define PROFCODE .prologue 0
#endif

#define EPILOGUE \
.end REALNAME; \
.ident VERSION
#endif

#ifdef DOUBLE
#define SXADDQ s8addq
#define SXSUBL s8subl
#define LD ldt
#define ST stt
#define STQ stq
#define ADD addt/su
#define SUB subt/su
#define MUL mult/su
#define DIV divt/su
#else
#define SXADDQ s4addq
#define SXSUBL s4subl
#define LD lds
#define ST sts
#define STQ stl
#define ADD adds/su
#define SUB subs/su
#define MUL muls/su
#define DIV divs/su
#endif
#endif
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