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#define ASSEMBLER
#include "common.h"

#define N      $r4
#define X      $r5
#define INCX   $r6
#define I      $r17
#define TEMP   $r18
#define t1     $r12
#define t2     $r13
#define t3     $r14
#define t4     $r15
#define a1     $f15
#define a2     $f16
#define res    $f19
#define VX0    $vr15
#define VX1    $vr16
#define VX2    $vr17
#define VX3    $vr18
#define VX4    $vr21
#define res1   $vr19
#define res2   $vr20
#define RCP    $f2
#define VALPHA $vr3

   PROLOGUE

#ifdef F_INTERFACE
   LDINT   N,     0(N)
   LDINT   INCX,  0(INCX)
#endif

   bge $r0, N, .L999
   beq $r0, INCX, .L999
   addi.d  $sp,     $sp,     -32
   st.d    $ra,     $sp,     0
   st.d    N,       $sp,     8
   st.d    X,       $sp,     16
   st.d    INCX,    $sp,     24
#ifdef DYNAMIC_ARCH
   bl camax_k_LA264
#else
   bl camax_k
#endif
   ld.d    $ra,     $sp,     0
   ld.d    N,       $sp,     8
   ld.d    X,       $sp,     16
   ld.d    INCX,    $sp,     24
   addi.d  $sp,     $sp,     32

   frecip.s RCP, $f0
   vreplvei.w   VALPHA, $vr2, 0
   vxor.v res1, res1, res1
   vxor.v res2, res2, res2
   fcmp.ceq.s  $fcc0, $f0,  $f19
   bcnez  $fcc0, .L999
   li.d  TEMP, 1
   slli.d TEMP, TEMP, ZBASE_SHIFT
   slli.d INCX, INCX, ZBASE_SHIFT
   srai.d I, N, 2
   bne INCX, TEMP, .L20
   bge $r0,  I, .L997
   .align 3

.L10:
   vld VX0, X, 0 * SIZE
   addi.d I, I, -1
   vld VX0, X, 0 * SIZE
   vld VX1, X, 4 * SIZE
   vfmul.s  VX0,  VX0,  VALPHA
   vfmul.s  VX1,  VX1,  VALPHA

   vfmadd.s res1, VX0, VX0, res1
   vfmadd.s res2, VX1, VX1, res2

   addi.d X, X, 8 * SIZE
   blt $r0, I, .L10
   b .L996
   .align 3

.L20:
   bge $r0, I, .L997
   .align 3

.L21:
   ld.w t1, X, 0 * SIZE
   ld.w t2, X, 1 * SIZE
   add.d X, X, INCX
   ld.w t3, X, 0 * SIZE
   ld.w t4, X, 1 * SIZE
   vinsgr2vr.w VX0, t1, 0
   vinsgr2vr.w VX0, t2, 1
   vinsgr2vr.w VX0, t3, 2
   vinsgr2vr.w VX0, t4, 3
   add.d X, X, INCX
   vfmul.s  VX0,  VX0,  VALPHA
   vfmadd.s res1, VX0, VX0, res1

   ld.w t1, X, 0 * SIZE
   ld.w t2, X, 1 * SIZE
   add.d X, X, INCX
   ld.w t3, X, 0 * SIZE
   ld.w t4, X, 1 * SIZE
   vinsgr2vr.w VX0, t1, 0
   vinsgr2vr.w VX0, t2, 1
   vinsgr2vr.w VX0, t3, 2
   vinsgr2vr.w VX0, t4, 3
   add.d X, X, INCX
   vfmul.s  VX0,  VX0,  VALPHA
   vfmadd.s res2, VX0, VX0, res2

   addi.d  I, I, -1
   blt $r0, I, .L21
   b .L996
   .align 3

.L996:
   vfadd.s res1, res1, res2
   vreplvei.w VX1, res1, 1
   vreplvei.w VX2, res1, 2
   vreplvei.w VX3, res1, 3
   vfadd.s res1, VX1, res1
   vfadd.s res1, VX2, res1
   vfadd.s res1, VX3, res1
   .align 3

.L997:
   andi I, N, 3
   bge $r0, I, .L999
   .align 3

.L998:
    fld.s a1, X, 0 * SIZE
    fld.s a2, X, 1 * SIZE
    addi.d I, I, -1
    fmul.s a1, a1, RCP
    fmul.s a2, a2, RCP
    fmadd.s res, a1, a1, res
    fmadd.s res, a2, a2, res
    add.d X, X, INCX
    blt $r0, I, .L998
    .align 3

.L999:
    fsqrt.s res, res
    fmul.s $f0, res, $f0
    move $r4, $r17
    jirl $r0, $r1, 0x0
    .align 3

    EPILOGUE