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Diff: rtx/TARGET_CORTEX_M/TARGET_RTOS_M4_M7/TOOLCHAIN_IAR/HAL_CM4.S
- Revision:
- 105:94371fac911d
- Parent:
- 104:07314541bd12
--- a/rtx/TARGET_CORTEX_M/TARGET_RTOS_M4_M7/TOOLCHAIN_IAR/HAL_CM4.S Thu Feb 18 10:00:31 2016 +0000 +++ /dev/null Thu Jan 01 00:00:00 1970 +0000 @@ -1,333 +0,0 @@ -/*---------------------------------------------------------------------------- - * CMSIS-RTOS - RTX - *---------------------------------------------------------------------------- - * Name: HAL_CM4.S - * 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. - *---------------------------------------------------------------------------*/ - - NAME HAL_CM4.S - - #define TCB_STACKF 32 - #define TCB_TSTACK 40 - - EXTERN os_flags - EXTERN os_tsk - EXTERN rt_alloc_box - EXTERN rt_free_box - EXTERN rt_stk_check - EXTERN rt_pop_req - EXTERN rt_systick - EXTERN os_tick_irqack - EXTERN SVC_Table - EXTERN SVC_Count - -/*---------------------------------------------------------------------------- - * Functions - *---------------------------------------------------------------------------*/ - - SECTION .text:CODE:NOROOT(2) - THUMB - -/*--------------------------- rt_set_PSP ------------------------------------*/ - -; void rt_set_PSP (U32 stack); - - PUBLIC rt_set_PSP -rt_set_PSP: - - MSR PSP,R0 - BX LR - - -/*--------------------------- rt_get_PSP ------------------------------------*/ - -; U32 rt_get_PSP (void); - - PUBLIC rt_get_PSP -rt_get_PSP: - - MRS R0,PSP - BX LR - - -/*--------------------------- os_set_env ------------------------------------*/ - -; void os_set_env (void); - /* Switch to Unprivileged/Privileged Thread mode, use PSP. */ - - PUBLIC os_set_env -os_set_env: - - MOV R0,SP /* PSP = MSP */ - MSR PSP,R0 - LDR R0,=os_flags - LDRB R0,[R0] - LSLS R0,#31 - ITE NE - MOVNE R0,#0x02 /* Privileged Thread mode, use PSP */ - MOVEQ R0,#0x03 /* Unprivileged Thread mode, use PSP */ - MSR CONTROL,R0 - BX LR - - -/*--------------------------- _alloc_box ------------------------------------*/ - -; void *_alloc_box (void *box_mem); - /* Function wrapper for Unprivileged/Privileged mode. */ - - PUBLIC _alloc_box -_alloc_box: - - LDR R12,=rt_alloc_box - MRS R3,IPSR - LSLS R3,#24 - IT NE - BXNE R12 - MRS R3,CONTROL - LSLS R3,#31 - IT EQ - BXEQ R12 - SVC 0 - BX LR - - -/*--------------------------- _free_box -------------------------------------*/ - -; int _free_box (void *box_mem, void *box); - /* Function wrapper for Unprivileged/Privileged mode. */ - - PUBLIC _free_box -_free_box: - - LDR R12,=rt_free_box - MRS R3,IPSR - LSLS R3,#24 - IT NE - BXNE R12 - MRS R3,CONTROL - LSLS R3,#31 - IT EQ - BXEQ R12 - SVC 0 - BX LR - - -/*-------------------------- SVC_Handler ------------------------------------*/ - -; void SVC_Handler (void); - - PUBLIC SVC_Handler -SVC_Handler: - -#ifdef IFX_XMC4XXX - PUBLIC 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,=os_tsk - LDM R3,{R1,R2} /* os_tsk.run, os_tsk.new */ - CMP R1,R2 -#ifdef IFX_XMC4XXX - ITT EQ - PUSHEQ {LR} - POPEQ {PC} -#else - IT EQ - BXEQ LR /* RETI, no task switch */ -#endif - - CBZ R1,SVC_Next /* Runtask deleted? */ - TST LR,#0x10 /* is it extended frame? */ - ITTE EQ - 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 */ - ITTE NE - VLDMIANE R12!,{S16-S31} /* restore VFP hi-registers */ - MVNNE LR,#~0xFFFFFFED /* set EXC_RETURN value */ - MVNEQ LR,#~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 */ - - -/*-------------------------- PendSV_Handler ---------------------------------*/ - -; void PendSV_Handler (void); - - PUBLIC PendSV_Handler -PendSV_Handler: - -#ifdef IFX_XMC4XXX - PUBLIC PendSV_Handler_Veneer -PendSV_Handler_Veneer: -#endif - - PUSH {R4,LR} /* Save EXC_RETURN */ - BL rt_pop_req - -Sys_Switch: - POP {R4,LR} /* Restore EXC_RETURN */ - - LDR R3,=os_tsk - LDM R3,{R1,R2} /* os_tsk.run, os_tsk.new */ - CMP R1,R2 -#ifdef IFX_XMC4XXX - ITT EQ - PUSHEQ {LR} - POPEQ {PC} -#else - IT EQ - BXEQ LR /* RETI, no task switch */ -#endif - - MRS R12,PSP /* Read PSP */ - TST LR,#0x10 /* is it extended frame? */ - ITTE EQ - 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 */ - ITTE NE - VLDMIANE R12!,{S16-S31} /* restore VFP hi-registers */ - MVNNE LR,#~0xFFFFFFED /* set EXC_RETURN value */ - MVNEQ LR,#~0xFFFFFFFD - MSR PSP,R12 /* Write PSP */ - -Sys_Exit: -#ifdef IFX_XMC4XXX - PUSH {LR} - POP {PC} -#else - BX LR /* Return to Thread Mode */ -#endif - - -/*-------------------------- SysTick_Handler --------------------------------*/ - -; void SysTick_Handler (void); - - PUBLIC SysTick_Handler -SysTick_Handler: -#ifdef IFX_XMC4XXX - PUBLIC SysTick_Handler_Veneer -SysTick_Handler_Veneer: -#endif - - PUSH {R4,LR} /* Save EXC_RETURN */ - BL rt_systick - B Sys_Switch - - -/*-------------------------- OS_Tick_Handler --------------------------------*/ - -; void OS_Tick_Handler (void); - - PUBLIC OS_Tick_Handler -OS_Tick_Handler: - - PUSH {R4,LR} /* Save EXC_RETURN */ - BL os_tick_irqack - BL rt_systick - B Sys_Switch - - - END - -/*---------------------------------------------------------------------------- - * end of file - *---------------------------------------------------------------------------*/