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Diffstat (limited to 'DSP_Lib/Source/TransformFunctions/arm_bitreversal2.S')
| -rw-r--r-- | DSP_Lib/Source/TransformFunctions/arm_bitreversal2.S | 211 |
1 files changed, 0 insertions, 211 deletions
diff --git a/DSP_Lib/Source/TransformFunctions/arm_bitreversal2.S b/DSP_Lib/Source/TransformFunctions/arm_bitreversal2.S deleted file mode 100644 index 08c5d75..0000000 --- a/DSP_Lib/Source/TransformFunctions/arm_bitreversal2.S +++ /dev/null @@ -1,211 +0,0 @@ -;/* ---------------------------------------------------------------------- -;* Copyright (C) 2010-2014 ARM Limited. All rights reserved. -;* -;* $Date: 19. March 2015 -;* $Revision: V.1.4.5 -;* -;* Project: CMSIS DSP Library -;* Title: arm_bitreversal2.S -;* -;* Description: This is the arm_bitreversal_32 function done in -;* assembly for maximum speed. This function is called -;* after doing an fft to reorder the output. The function -;* is loop unrolled by 2. arm_bitreversal_16 as well. -;* -;* Target Processor: Cortex-M4/Cortex-M3/Cortex-M0 -;* -;* Redistribution and use in source and binary forms, with or without -;* modification, are permitted provided that the following conditions -;* are met: -;* - Redistributions of source code must retain the above copyright -;* notice, this list of conditions and the following disclaimer. -;* - 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. -;* - Neither the name of ARM LIMITED 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 -;* COPYRIGHT OWNER 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. -;* -------------------------------------------------------------------- */ -#if defined(__CC_ARM) // Keil - #define CODESECT AREA ||.text||, CODE, READONLY, ALIGN=2 - #define LABEL -#elif defined(__IASMARM__) // IAR - #define CODESECT SECTION `.text`:CODE - #define PROC - #define LABEL - #define ENDP - #define EXPORT PUBLIC -#elif defined(__CSMC__) /* Cosmic */ - #define CODESECT switch .text - #define THUMB - #define EXPORT xdef - #define PROC : - #define LABEL : - #define ENDP - #define arm_bitreversal_32 _arm_bitreversal_32 -#elif defined (__GNUC__) // GCC - #define THUMB .thumb - #define CODESECT .section .text - #define EXPORT .global - #define PROC : - #define LABEL : - #define ENDP - #define END - - .syntax unified -#endif - - CODESECT - THUMB - -;/* -;* @brief In-place bit reversal function. -;* @param[in, out] *pSrc points to the in-place buffer of unknown 32-bit data type. -;* @param[in] bitRevLen bit reversal table length -;* @param[in] *pBitRevTab points to bit reversal table. -;* @return none. -;*/ - EXPORT arm_bitreversal_32 - EXPORT arm_bitreversal_16 - -#if defined(ARM_MATH_CM0) || defined(ARM_MATH_CM0PLUS) - -arm_bitreversal_32 PROC - ADDS r3,r1,#1 - PUSH {r4-r6} - ADDS r1,r2,#0 - LSRS r3,r3,#1 -arm_bitreversal_32_0 LABEL - LDRH r2,[r1,#2] - LDRH r6,[r1,#0] - ADD r2,r0,r2 - ADD r6,r0,r6 - LDR r5,[r2,#0] - LDR r4,[r6,#0] - STR r5,[r6,#0] - STR r4,[r2,#0] - LDR r5,[r2,#4] - LDR r4,[r6,#4] - STR r5,[r6,#4] - STR r4,[r2,#4] - ADDS r1,r1,#4 - SUBS r3,r3,#1 - BNE arm_bitreversal_32_0 - POP {r4-r6} - BX lr - ENDP - -arm_bitreversal_16 PROC - ADDS r3,r1,#1 - PUSH {r4-r6} - ADDS r1,r2,#0 - LSRS r3,r3,#1 -arm_bitreversal_16_0 LABEL - LDRH r2,[r1,#2] - LDRH r6,[r1,#0] - LSRS r2,r2,#1 - LSRS r6,r6,#1 - ADD r2,r0,r2 - ADD r6,r0,r6 - LDR r5,[r2,#0] - LDR r4,[r6,#0] - STR r5,[r6,#0] - STR r4,[r2,#0] - ADDS r1,r1,#4 - SUBS r3,r3,#1 - BNE arm_bitreversal_16_0 - POP {r4-r6} - BX lr - ENDP - -#else - -arm_bitreversal_32 PROC - ADDS r3,r1,#1 - CMP r3,#1 - IT LS - BXLS lr - PUSH {r4-r9} - ADDS r1,r2,#2 - LSRS r3,r3,#2 -arm_bitreversal_32_0 LABEL ;/* loop unrolled by 2 */ - LDRH r8,[r1,#4] - LDRH r9,[r1,#2] - LDRH r2,[r1,#0] - LDRH r12,[r1,#-2] - ADD r8,r0,r8 - ADD r9,r0,r9 - ADD r2,r0,r2 - ADD r12,r0,r12 - LDR r7,[r9,#0] - LDR r6,[r8,#0] - LDR r5,[r2,#0] - LDR r4,[r12,#0] - STR r6,[r9,#0] - STR r7,[r8,#0] - STR r5,[r12,#0] - STR r4,[r2,#0] - LDR r7,[r9,#4] - LDR r6,[r8,#4] - LDR r5,[r2,#4] - LDR r4,[r12,#4] - STR r6,[r9,#4] - STR r7,[r8,#4] - STR r5,[r12,#4] - STR r4,[r2,#4] - ADDS r1,r1,#8 - SUBS r3,r3,#1 - BNE arm_bitreversal_32_0 - POP {r4-r9} - BX lr - ENDP - -arm_bitreversal_16 PROC - ADDS r3,r1,#1 - CMP r3,#1 - IT LS - BXLS lr - PUSH {r4-r9} - ADDS r1,r2,#2 - LSRS r3,r3,#2 -arm_bitreversal_16_0 LABEL ;/* loop unrolled by 2 */ - LDRH r8,[r1,#4] - LDRH r9,[r1,#2] - LDRH r2,[r1,#0] - LDRH r12,[r1,#-2] - ADD r8,r0,r8,LSR #1 - ADD r9,r0,r9,LSR #1 - ADD r2,r0,r2,LSR #1 - ADD r12,r0,r12,LSR #1 - LDR r7,[r9,#0] - LDR r6,[r8,#0] - LDR r5,[r2,#0] - LDR r4,[r12,#0] - STR r6,[r9,#0] - STR r7,[r8,#0] - STR r5,[r12,#0] - STR r4,[r2,#0] - ADDS r1,r1,#8 - SUBS r3,r3,#1 - BNE arm_bitreversal_16_0 - POP {r4-r9} - BX lr - ENDP - -#endif - - END |