From 6ab94e0b318884bbcb95e2ea3835f951502e1d99 Mon Sep 17 00:00:00 2001 From: jaseg Date: Wed, 14 Oct 2020 12:47:28 +0200 Subject: Move firmware into subdirectory --- .../Source/TransformFunctions/arm_bitreversal2.S | 216 +++++++++++++++++++++ 1 file changed, 216 insertions(+) create mode 100644 fw/midi-dials/Drivers/CMSIS/DSP/Source/TransformFunctions/arm_bitreversal2.S (limited to 'fw/midi-dials/Drivers/CMSIS/DSP/Source/TransformFunctions/arm_bitreversal2.S') diff --git a/fw/midi-dials/Drivers/CMSIS/DSP/Source/TransformFunctions/arm_bitreversal2.S b/fw/midi-dials/Drivers/CMSIS/DSP/Source/TransformFunctions/arm_bitreversal2.S new file mode 100644 index 0000000..cde264c --- /dev/null +++ b/fw/midi-dials/Drivers/CMSIS/DSP/Source/TransformFunctions/arm_bitreversal2.S @@ -0,0 +1,216 @@ +;/* ---------------------------------------------------------------------- +; * Project: CMSIS DSP Library +; * Title: arm_bitreversal2.S +; * Description: arm_bitreversal_32 function done in assembly for maximum speed. +; * Called after doing an fft to reorder the output. +; * The function is loop unrolled by 2. arm_bitreversal_16 as well. +; * +; * $Date: 27. January 2017 +; * $Revision: V.1.5.1 +; * +; * Target Processor: Cortex-M cores +; * -------------------------------------------------------------------- */ +;/* +; * Copyright (C) 2010-2017 ARM Limited or its affiliates. All rights reserved. +; * +; * SPDX-License-Identifier: Apache-2.0 +; * +; * Licensed under the Apache License, Version 2.0 (the License); you may +; * not use this file except in compliance with the License. +; * You may obtain a copy of the License at +; * +; * www.apache.org/licenses/LICENSE-2.0 +; * +; * Unless required by applicable law or agreed to in writing, software +; * distributed under the License is distributed on an AS IS BASIS, WITHOUT +; * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. +; * See the License for the specific language governing permissions and +; * limitations under the License. +; */ + +#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 ( __TI_ARM__ ) /* TI ARM */ + #define THUMB .thumb + #define CODESECT .text + #define EXPORT .global + #define PROC : .asmfunc + #define LABEL : + #define ENDP .endasmfunc + #define END +#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 ( __CC_ARM ) /* Keil */ +#elif defined ( __IASMARM__ ) /* IAR */ +#elif defined ( __CSMC__ ) /* Cosmic */ +#elif defined ( __TI_ARM__ ) /* TI ARM */ +#elif defined ( __GNUC__ ) /* GCC */ + .type arm_bitreversal_16, %function + .type arm_bitreversal_32, %function +#endif + +#if defined(ARM_MATH_CM0) || defined(ARM_MATH_CM0PLUS) || defined(ARM_MATH_ARMV8MBL) + +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 -- cgit