/*************************************************************************** Copyright (c) 2013, The OpenBLAS Project 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. 3. Neither the name of the OpenBLAS project nor the names of its contributors may be used to endorse or promote products derived from this software without specific prior written permission. THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "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 OPENBLAS PROJECT 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. *****************************************************************************/ /************************************************************************************** * 2013/11/14 Saar * BLASTEST : OK * CTEST : OK * TEST : OK * **************************************************************************************/ #define ASSEMBLER #include "common.h" #define STACKSIZE 256 #define N r0 #define X r1 #define INC_X r2 #define INDEX r3 #define Z r4 #define I r12 #define X_PRE 512 /************************************************************************************** * Macro definitions **************************************************************************************/ #if defined(USE_ABS) #if defined(DOUBLE) #define VABS(x0,x1) vabs.f64 x0, x1 #else #define VABS(x0,x1) vabs.f32 x0, x1 #endif #else #define VABS(x0,x1) nop #endif /*****************************************************************************************/ #if defined(USE_MIN) #define MOVCOND movlt #if defined(DOUBLE) #define VMOVCOND vmovlt.f64 #else #define VMOVCOND vmovlt.f32 #endif #else #define MOVCOND movgt #if defined(DOUBLE) #define VMOVCOND vmovgt.f64 #else #define VMOVCOND vmovgt.f32 #endif #endif /*****************************************************************************************/ #if !defined(COMPLEX) #if defined(DOUBLE) .macro INIT_F fldmiad X!, { d0 } VABS( d0, d0 ) mov Z, #1 mov INDEX, Z .endm .macro KERNEL_F1 fldmiad X!, { d4 } add Z, Z, #1 VABS( d4, d4 ) vcmpe.f64 d4, d0 vmrs APSR_nzcv, fpscr VMOVCOND d0, d4 MOVCOND INDEX, Z .endm .macro INIT_S fldmiad X, { d0 } VABS( d0, d0 ) mov Z, #1 mov INDEX, Z add X, X, INC_X .endm .macro KERNEL_S1 fldmiad X, { d4 } add Z, Z, #1 VABS( d4, d4 ) vcmpe.f64 d4, d0 vmrs APSR_nzcv, fpscr VMOVCOND d0, d4 MOVCOND INDEX, Z add X, X, INC_X .endm #else .macro INIT_F fldmias X!, { s0 } VABS( s0, s0 ) mov Z, #1 mov INDEX, Z .endm .macro KERNEL_F1 fldmias X!, { s4 } add Z, Z, #1 VABS( s4, s4 ) vcmpe.f32 s4, s0 vmrs APSR_nzcv, fpscr VMOVCOND s0, s4 MOVCOND INDEX, Z .endm .macro INIT_S fldmias X, { s0 } VABS( s0, s0 ) mov Z, #1 mov INDEX, Z add X, X, INC_X .endm .macro KERNEL_S1 fldmias X, { s4 } add Z, Z, #1 VABS( s4, s4 ) vcmpe.f32 s4, s0 vmrs APSR_nzcv, fpscr VMOVCOND s0, s4 MOVCOND INDEX, Z add X, X, INC_X .endm #endif #else #if defined(DOUBLE) .macro INIT_F fldmiad X!, { d0 -d1 } vabs.f64 d0, d0 vabs.f64 d1, d1 vadd.f64 d0 , d0, d1 mov Z, #1 mov INDEX, Z .endm .macro KERNEL_F1 fldmiad X!, { d4 - d5 } add Z, Z, #1 vabs.f64 d4, d4 vabs.f64 d5, d5 vadd.f64 d4 , d4, d5 vcmpe.f64 d4, d0 vmrs APSR_nzcv, fpscr VMOVCOND d0, d4 MOVCOND INDEX, Z .endm .macro INIT_S fldmiad X, { d0 -d1 } vabs.f64 d0, d0 vabs.f64 d1, d1 vadd.f64 d0 , d0, d1 mov Z, #1 mov INDEX, Z add X, X, INC_X .endm .macro KERNEL_S1 fldmiad X, { d4 - d5 } add Z, Z, #1 vabs.f64 d4, d4 vabs.f64 d5, d5 vadd.f64 d4 , d4, d5 vcmpe.f64 d4, d0 vmrs APSR_nzcv, fpscr VMOVCOND d0, d4 MOVCOND INDEX, Z add X, X, INC_X .endm #else .macro INIT_F fldmias X!, { s0 -s1 } vabs.f32 s0, s0 vabs.f32 s1, s1 vadd.f32 s0 , s0, s1 mov Z, #1 mov INDEX, Z .endm .macro KERNEL_F1 fldmias X!, { s4 - s5 } add Z, Z, #1 vabs.f32 s4, s4 vabs.f32 s5, s5 vadd.f32 s4 , s4, s5 vcmpe.f32 s4, s0 vmrs APSR_nzcv, fpscr VMOVCOND s0, s4 MOVCOND INDEX, Z .endm .macro INIT_S fldmias X, { s0 -s1 } vabs.f32 s0, s0 vabs.f32 s1, s1 vadd.f32 s0 , s0, s1 mov Z, #1 mov INDEX, Z add X, X, INC_X .endm .macro KERNEL_S1 fldmias X, { s4 - s5 } add Z, Z, #1 vabs.f32 s4, s4 vabs.f32 s5, s5 vadd.f32 s4 , s4, s5 vcmpe.f32 s4, s0 vmrs APSR_nzcv, fpscr VMOVCOND s0, s4 MOVCOND INDEX, Z add X, X, INC_X .endm #endif #endif /************************************************************************************** * End of macro definitions **************************************************************************************/ PROLOGUE .align 5 push {r4} movs r12, #0 // clear floating point register vmov s0, r12 #if defined(DOUBLE) vcvt.f64.f32 d0, s0 #endif mov INDEX, #0 cmp N, #0 ble iamax_kernel_L999 cmp INC_X, #0 beq iamax_kernel_L999 cmp INC_X, #1 bne iamax_kernel_S_BEGIN iamax_kernel_F_BEGIN: INIT_F subs N, N , #1 ble iamax_kernel_L999 asrs I, N, #2 // I = N / 4 ble iamax_kernel_F1 .align 5 iamax_kernel_F4: pld [ X, #X_PRE ] KERNEL_F1 KERNEL_F1 #if defined(COMPLEX) && defined(DOUBLE) pld [ X, #X_PRE ] #endif KERNEL_F1 KERNEL_F1 subs I, I, #1 ble iamax_kernel_F1 #if defined(COMPLEX) || defined(DOUBLE) pld [ X, #X_PRE ] #endif KERNEL_F1 KERNEL_F1 #if defined(COMPLEX) && defined(DOUBLE) pld [ X, #X_PRE ] #endif KERNEL_F1 KERNEL_F1 subs I, I, #1 bne iamax_kernel_F4 iamax_kernel_F1: ands I, N, #3 ble iamax_kernel_L999 iamax_kernel_F10: KERNEL_F1 subs I, I, #1 bne iamax_kernel_F10 b iamax_kernel_L999 iamax_kernel_S_BEGIN: #if defined(COMPLEX) #if defined(DOUBLE) lsl INC_X, INC_X, #4 // INC_X * SIZE * 2 #else lsl INC_X, INC_X, #3 // INC_X * SIZE * 2 #endif #else #if defined(DOUBLE) lsl INC_X, INC_X, #3 // INC_X * SIZE #else lsl INC_X, INC_X, #2 // INC_X * SIZE #endif #endif INIT_S subs N, N , #1 ble iamax_kernel_L999 asrs I, N, #2 // I = N / 4 ble iamax_kernel_S1 .align 5 iamax_kernel_S4: KERNEL_S1 KERNEL_S1 KERNEL_S1 KERNEL_S1 subs I, I, #1 bne iamax_kernel_S4 iamax_kernel_S1: ands I, N, #3 ble iamax_kernel_L999 iamax_kernel_S10: KERNEL_S1 subs I, I, #1 bne iamax_kernel_S10 iamax_kernel_L999: mov r0, INDEX // set return value pop {r4} bx lr EPILOGUE