diff options
Diffstat (limited to 'tmk_core/tool/mbed/mbed-sdk/libraries/rtos/rtx/TARGET_CORTEX_M/TARGET_M0P/TOOLCHAIN_IAR/HAL_CM0.s')
| -rw-r--r-- | tmk_core/tool/mbed/mbed-sdk/libraries/rtos/rtx/TARGET_CORTEX_M/TARGET_M0P/TOOLCHAIN_IAR/HAL_CM0.s | 312 |
1 files changed, 312 insertions, 0 deletions
diff --git a/tmk_core/tool/mbed/mbed-sdk/libraries/rtos/rtx/TARGET_CORTEX_M/TARGET_M0P/TOOLCHAIN_IAR/HAL_CM0.s b/tmk_core/tool/mbed/mbed-sdk/libraries/rtos/rtx/TARGET_CORTEX_M/TARGET_M0P/TOOLCHAIN_IAR/HAL_CM0.s new file mode 100644 index 0000000000..c39fcdd397 --- /dev/null +++ b/tmk_core/tool/mbed/mbed-sdk/libraries/rtos/rtx/TARGET_CORTEX_M/TARGET_M0P/TOOLCHAIN_IAR/HAL_CM0.s @@ -0,0 +1,312 @@ +/*---------------------------------------------------------------------------- + * CMSIS-RTOS - RTX + *---------------------------------------------------------------------------- + * Name: HAL_CM0.S + * Purpose: Hardware Abstraction Layer for Cortex-M0 + * 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_CM0.S + + #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 + BNE PrivilegedE + MOVS R0,#0x03 /* Unprivileged Thread mode, use PSP */ + MSR CONTROL,R0 + BX LR +PrivilegedE: + MOVS R0,#0x02 /* Privileged 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 R3,=rt_alloc_box + MOV R12,R3 + MRS R3,IPSR + LSLS R3,#24 + BNE PrivilegedA + MRS R3,CONTROL + LSLS R3,#31 + BEQ PrivilegedA + SVC 0 + BX LR +PrivilegedA: + BX R12 + + +/*--------------------------- _free_box -------------------------------------*/ + +; int _free_box (void *box_mem, void *box); + /* Function wrapper for Unprivileged/Privileged mode. */ + + PUBLIC _free_box +_free_box: + + LDR R3,=rt_free_box + MOV R12,R3 + MRS R3,IPSR + LSLS R3,#24 + BNE PrivilegedF + MRS R3,CONTROL + LSLS R3,#31 + BEQ PrivilegedF + SVC 0 + BX LR +PrivilegedF: + BX R12 + + +/*-------------------------- SVC_Handler ------------------------------------*/ + +; void SVC_Handler (void); + + PUBLIC SVC_Handler +SVC_Handler: + + MRS R0,PSP /* Read PSP */ + LDR R1,[R0,#24] /* Read Saved PC from Stack */ + SUBS R1,R1,#2 /* Point to SVC Instruction */ + LDRB R1,[R1] /* Load SVC Number */ + CMP R1,#0 + BNE SVC_User /* User SVC Number > 0 */ + + MOV LR,R4 + LDMIA R0,{R0-R3,R4} /* Read R0-R3,R12 from stack */ + MOV R12,R4 + MOV R4,LR + BLX R12 /* Call SVC Function */ + + MRS R3,PSP /* Read PSP */ + STMIA R3!,{R0-R2} /* Store return values */ + + LDR R3,=os_tsk + LDMIA R3!,{R1,R2} /* os_tsk.run, os_tsk.new */ + CMP R1,R2 + BEQ SVC_Exit /* no task switch */ + + SUBS R3,#8 + CMP R1,#0 /* Runtask deleted? */ + BEQ SVC_Next + + MRS R0,PSP /* Read PSP */ + SUBS R0,R0,#32 /* Adjust Start Address */ + STR R0,[R1,#TCB_TSTACK] /* Update os_tsk.run->tsk_stack */ + STMIA R0!,{R4-R7} /* Save old context (R4-R7) */ + MOV R4,R8 + MOV R5,R9 + MOV R6,R10 + MOV R7,R11 + STMIA R0!,{R4-R7} /* Save old context (R8-R11) */ + + 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 R0,[R2,#TCB_TSTACK] /* os_tsk.new->tsk_stack */ + ADDS R0,R0,#16 /* Adjust Start Address */ + LDMIA R0!,{R4-R7} /* Restore new Context (R8-R11) */ + MOV R8,R4 + MOV R9,R5 + MOV R10,R6 + MOV R11,R7 + MSR PSP,R0 /* Write PSP */ + SUBS R0,R0,#32 /* Adjust Start Address */ + LDMIA R0!,{R4-R7} /* Restore new Context (R4-R7) */ + +SVC_Exit: + MOVS R0,#~0xFFFFFFFD /* Set EXC_RETURN value */ + MVNS R0,R0 + BX R0 /* RETI to Thread Mode, use PSP */ + + /*------------------- 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 + LSLS R1,R1,#2 + LDR R4,[R4,R1] /* Load SVC Function Address */ + MOV LR,R4 + + LDMIA R0,{R0-R3,R4} /* Read R0-R3,R12 from stack */ + MOV R12,R4 + BLX LR /* Call SVC Function */ + + MRS R4,PSP /* Read PSP */ + STMIA R4!,{R0-R3} /* Function return values */ +SVC_Done: + POP {R4,PC} /* RETI */ + + +/*-------------------------- PendSV_Handler ---------------------------------*/ + +; void PendSV_Handler (void); + + PUBLIC PendSV_Handler +PendSV_Handler: + + BL rt_pop_req + +Sys_Switch: + LDR R3,=os_tsk + LDMIA R3!,{R1,R2} /* os_tsk.run, os_tsk.new */ + CMP R1,R2 + BEQ Sys_Exit /* no task switch */ + + SUBS R3,#8 + + MRS R0,PSP /* Read PSP */ + SUBS R0,R0,#32 /* Adjust Start Address */ + STR R0,[R1,#TCB_TSTACK] /* Update os_tsk.run->tsk_stack */ + STMIA R0!,{R4-R7} /* Save old context (R4-R7) */ + MOV R4,R8 + MOV R5,R9 + MOV R6,R10 + MOV R7,R11 + STMIA R0!,{R4-R7} /* Save old context (R8-R11) */ + + PUSH {R2,R3} + BL rt_stk_check /* Check for Stack overflow */ + POP {R2,R3} + + STR R2,[R3] /* os_tsk.run = os_tsk.new */ + + LDR R0,[R2,#TCB_TSTACK] /* os_tsk.new->tsk_stack */ + ADDS R0,R0,#16 /* Adjust Start Address */ + LDMIA R0!,{R4-R7} /* Restore new Context (R8-R11) */ + MOV R8,R4 + MOV R9,R5 + MOV R10,R6 + MOV R11,R7 + MSR PSP,R0 /* Write PSP */ + SUBS R0,R0,#32 /* Adjust Start Address */ + LDMIA R0!,{R4-R7} /* Restore new Context (R4-R7) */ + +Sys_Exit: + MOVS R0,#~0xFFFFFFFD /* Set EXC_RETURN value */ + MVNS R0,R0 + BX R0 /* RETI to Thread Mode, use PSP */ + + +/*-------------------------- SysTick_Handler --------------------------------*/ + +; void SysTick_Handler (void); + + PUBLIC SysTick_Handler +SysTick_Handler: + + BL rt_systick + B Sys_Switch + + +/*-------------------------- OS_Tick_Handler --------------------------------*/ + +; void OS_Tick_Handler (void); + + PUBLIC OS_Tick_Handler +OS_Tick_Handler: + + BL os_tick_irqack + BL rt_systick + B Sys_Switch + + + END + +/*---------------------------------------------------------------------------- + * end of file + *---------------------------------------------------------------------------*/ |