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Diff: rtx/TARGET_CORTEX_M/TARGET_RTOS_M4_M7/TOOLCHAIN_ARM/HAL_CM4.c
- Revision:
- 105:94371fac911d
- Parent:
- 104:07314541bd12
diff -r 07314541bd12 -r 94371fac911d rtx/TARGET_CORTEX_M/TARGET_RTOS_M4_M7/TOOLCHAIN_ARM/HAL_CM4.c --- a/rtx/TARGET_CORTEX_M/TARGET_RTOS_M4_M7/TOOLCHAIN_ARM/HAL_CM4.c Thu Feb 18 10:00:31 2016 +0000 +++ /dev/null Thu Jan 01 00:00:00 1970 +0000 @@ -1,309 +0,0 @@ -/*---------------------------------------------------------------------------- - * RL-ARM - RTX - *---------------------------------------------------------------------------- - * Name: HAL_CM4.C - * Purpose: Hardware Abstraction Layer for Cortex-M4 - * Rev.: V4.70 - *---------------------------------------------------------------------------- - * - * Copyright (c) 1999-2009 KEIL, 2009-2013 ARM Germany GmbH - * All rights reserved. - * 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 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 COPYRIGHT HOLDERS AND 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. - *---------------------------------------------------------------------------*/ - -#include "rt_TypeDef.h" -#include "RTX_Conf.h" -#include "rt_System.h" -#include "rt_HAL_CM.h" -#include "rt_Task.h" -#include "rt_MemBox.h" - - -/*---------------------------------------------------------------------------- - * Functions - *---------------------------------------------------------------------------*/ - - -/*--------------------------- rt_set_PSP ------------------------------------*/ - -__asm void rt_set_PSP (U32 stack) { - MSR PSP,R0 - BX LR -} - - -/*--------------------------- rt_get_PSP ------------------------------------*/ - -__asm U32 rt_get_PSP (void) { - MRS R0,PSP - BX LR -} - - -/*--------------------------- os_set_env ------------------------------------*/ - -__asm void os_set_env (void) { - /* Switch to Unprivileged/Privileged Thread mode, use PSP. */ - MOV R0,SP ; PSP = MSP - MSR PSP,R0 - LDR R0,=__cpp(&os_flags) - LDRB R0,[R0] - LSLS R0,#31 - MOVNE R0,#0x02 ; Privileged Thread mode, use PSP - MOVEQ R0,#0x03 ; Unprivileged Thread mode, use PSP - MSR CONTROL,R0 - BX LR - - ALIGN -} - - -/*--------------------------- _alloc_box ------------------------------------*/ - -__asm void *_alloc_box (void *box_mem) { - /* Function wrapper for Unprivileged/Privileged mode. */ - LDR R12,=__cpp(rt_alloc_box) - MRS R3,IPSR - LSLS R3,#24 - BXNE R12 - MRS R3,CONTROL - LSLS R3,#31 - BXEQ R12 - SVC 0 - BX LR - - ALIGN -} - - -/*--------------------------- _free_box -------------------------------------*/ - -__asm int _free_box (void *box_mem, void *box) { - /* Function wrapper for Unprivileged/Privileged mode. */ - LDR R12,=__cpp(rt_free_box) - MRS R3,IPSR - LSLS R3,#24 - BXNE R12 - MRS R3,CONTROL - LSLS R3,#31 - BXEQ R12 - SVC 0 - BX LR - - ALIGN -} - - -/*-------------------------- SVC_Handler ------------------------------------*/ - -__asm void SVC_Handler (void) { - PRESERVE8 - - IMPORT SVC_Count - IMPORT SVC_Table - IMPORT rt_stk_check - -#ifdef IFX_XMC4XXX - EXPORT SVC_Handler_Veneer -SVC_Handler_Veneer -#endif - - MRS R0,PSP ; Read PSP - LDR R1,[R0,#24] ; Read Saved PC from Stack - LDRB R1,[R1,#-2] ; Load SVC Number - CBNZ R1,SVC_User - - LDM R0,{R0-R3,R12} ; Read R0-R3,R12 from stack - PUSH {R4,LR} ; Save EXC_RETURN - BLX R12 ; Call SVC Function - POP {R4,LR} ; Restore EXC_RETURN - - MRS R12,PSP ; Read PSP - STM R12,{R0-R2} ; Store return values - - LDR R3,=__cpp(&os_tsk) - LDM R3,{R1,R2} ; os_tsk.run, os_tsk.new - CMP R1,R2 -#ifdef IFX_XMC4XXX - PUSHEQ {LR} - POPEQ {PC} -#else - BXEQ LR ; RETI, no task switch -#endif - - CBZ R1,SVC_Next ; Runtask deleted? - TST LR,#0x10 ; is it extended frame? - VSTMDBEQ R12!,{S16-S31} ; yes, stack also VFP hi-regs - MOVEQ R0,#0x01 ; os_tsk->stack_frame val - MOVNE R0,#0x00 - STRB R0,[R1,#TCB_STACKF] ; os_tsk.run->stack_frame = val - STMDB R12!,{R4-R11} ; Save Old context - STR R12,[R1,#TCB_TSTACK] ; Update os_tsk.run->tsk_stack - - PUSH {R2,R3} - BL rt_stk_check ; Check for Stack overflow - POP {R2,R3} - -SVC_Next - STR R2,[R3] ; os_tsk.run = os_tsk.new - - LDR R12,[R2,#TCB_TSTACK] ; os_tsk.new->tsk_stack - LDMIA R12!,{R4-R11} ; Restore New Context - LDRB R0,[R2,#TCB_STACKF] ; Stack Frame - CMP R0,#0 ; Basic/Extended Stack Frame - VLDMIANE R12!,{S16-S31} ; restore VFP hi-registers - MVNNE LR,#:NOT:0xFFFFFFED ; set EXC_RETURN value - MVNEQ LR,#:NOT:0xFFFFFFFD - MSR PSP,R12 ; Write PSP - -SVC_Exit -#ifdef IFX_XMC4XXX - PUSH {LR} - POP {PC} -#else - BX LR -#endif - - /*------------------- User SVC ------------------------------*/ - -SVC_User - PUSH {R4,LR} ; Save Registers - LDR R2,=SVC_Count - LDR R2,[R2] - CMP R1,R2 - BHI SVC_Done ; Overflow - - LDR R4,=SVC_Table-4 - LDR R4,[R4,R1,LSL #2] ; Load SVC Function Address - - LDM R0,{R0-R3,R12} ; Read R0-R3,R12 from stack - BLX R4 ; Call SVC Function - - MRS R12,PSP - STM R12,{R0-R3} ; Function return values -SVC_Done - POP {R4,PC} ; RETI - - ALIGN -} - - -/*-------------------------- PendSV_Handler ---------------------------------*/ - -__asm void PendSV_Handler (void) { - PRESERVE8 - -#ifdef IFX_XMC4XXX - EXPORT PendSV_Handler_Veneer -PendSV_Handler_Veneer -#endif - - PUSH {R4,LR} ; Save EXC_RETURN - BL __cpp(rt_pop_req) - -Sys_Switch - POP {R4,LR} ; Restore EXC_RETURN - - LDR R3,=__cpp(&os_tsk) - LDM R3,{R1,R2} ; os_tsk.run, os_tsk.new - CMP R1,R2 -#ifdef IFX_XMC4XXX - PUSHEQ {LR} - POPEQ {PC} -#else - BXEQ LR ; RETI, no task switch -#endif - - MRS R12,PSP ; Read PSP - TST LR,#0x10 ; is it extended frame? - VSTMDBEQ R12!,{S16-S31} ; yes, stack also VFP hi-regs - MOVEQ R0,#0x01 ; os_tsk->stack_frame val - MOVNE R0,#0x00 - STRB R0,[R1,#TCB_STACKF] ; os_tsk.run->stack_frame = val - STMDB R12!,{R4-R11} ; Save Old context - STR R12,[R1,#TCB_TSTACK] ; Update os_tsk.run->tsk_stack - - PUSH {R2,R3} - BL rt_stk_check ; Check for Stack overflow - POP {R2,R3} - - STR R2,[R3] ; os_tsk.run = os_tsk.new - - LDR R12,[R2,#TCB_TSTACK] ; os_tsk.new->tsk_stack - LDMIA R12!,{R4-R11} ; Restore New Context - LDRB R0,[R2,#TCB_STACKF] ; Stack Frame - CMP R0,#0 ; Basic/Extended Stack Frame - VLDMIANE R12!,{S16-S31} ; restore VFP hi-regs - MVNNE LR,#:NOT:0xFFFFFFED ; set EXC_RETURN value - MVNEQ LR,#:NOT:0xFFFFFFFD - MSR PSP,R12 ; Write PSP - -Sys_Exit -#ifdef IFX_XMC4XXX - PUSH {LR} - POP {PC} -#else - BX LR ; Return to Thread Mode -#endif - - ALIGN -} - - -/*-------------------------- SysTick_Handler --------------------------------*/ - -__asm void SysTick_Handler (void) { - PRESERVE8 - -#ifdef IFX_XMC4XXX - EXPORT SysTick_Handler_Veneer -SysTick_Handler_Veneer -#endif - - PUSH {R4,LR} ; Save EXC_RETURN - BL __cpp(rt_systick) - B Sys_Switch - - ALIGN -} - - -/*-------------------------- OS_Tick_Handler --------------------------------*/ - -__asm void OS_Tick_Handler (void) { - PRESERVE8 - - PUSH {R4,LR} ; Save EXC_RETURN - BL __cpp(os_tick_irqack) - BL __cpp(rt_systick) - B Sys_Switch - - ALIGN -} - - -/*---------------------------------------------------------------------------- - * end of file - *---------------------------------------------------------------------------*/ -