mbed official / mbed-rtos

Official mbed Real Time Operating System based on the RTX implementation of the CMSIS-RTOS API open standard.

Dependents:   denki-yohou_b TestY201 Network-RTOS NTPClient_HelloWorld ... more

Deprecated

This is the mbed 2 rtos library. mbed OS 5 integrates the mbed library with mbed-rtos. With this, we have provided thread safety for all mbed APIs. If you'd like to learn about using mbed OS 5, please see the docs.

rtx/TARGET_CORTEX_M/TARGET_M3/TOOLCHAIN_IAR/HAL_CM3.s@68:d3d0e710b443, 2015-03-12 (annotated)

Committer:
mbed_official
Date:
Thu Mar 12 14:31:19 2015 +0000
Revision:
68:d3d0e710b443
Parent:
59:28712e303960 
Synchronized with git revision 051854181516992fb498d51f9ee6e70cbad9e083



Full URL: https://github.com/mbedmicro/mbed/commit/051854181516992fb498d51f9ee6e70cbad9e083/



Fix ksdk mcu HAL - stopbit

Who changed what in which revision?

UserRevisionLine numberNew contents of line
mbed_official 53:c35dab33c427 1 /*----------------------------------------------------------------------------
mbed_official 53:c35dab33c427 2 * RL-ARM - RTX
mbed_official 53:c35dab33c427 3 *----------------------------------------------------------------------------
mbed_official 53:c35dab33c427 4 * Name: HAL_CM3.S
mbed_official 53:c35dab33c427 5 * Purpose: Hardware Abstraction Layer for Cortex-M3
mbed_official 53:c35dab33c427 6 * Rev.: V4.70
mbed_official 53:c35dab33c427 7 *----------------------------------------------------------------------------
mbed_official 53:c35dab33c427 8 *
mbed_official 53:c35dab33c427 9 * Copyright (c) 1999-2009 KEIL, 2009-2013 ARM Germany GmbH
mbed_official 53:c35dab33c427 10 * All rights reserved.
mbed_official 53:c35dab33c427 11 * Redistribution and use in source and binary forms, with or without
mbed_official 53:c35dab33c427 12 * modification, are permitted provided that the following conditions are met:
mbed_official 53:c35dab33c427 13 * - Redistributions of source code must retain the above copyright
mbed_official 53:c35dab33c427 14 * notice, this list of conditions and the following disclaimer.
mbed_official 53:c35dab33c427 15 * - Redistributions in binary form must reproduce the above copyright
mbed_official 53:c35dab33c427 16 * notice, this list of conditions and the following disclaimer in the
mbed_official 53:c35dab33c427 17 * documentation and/or other materials provided with the distribution.
mbed_official 68:d3d0e710b443 18 * - Neither the name of ARM nor the names of its contributors may be used
mbed_official 68:d3d0e710b443 19 * to endorse or promote products derived from this software without
mbed_official 53:c35dab33c427 20 * specific prior written permission.
mbed_official 53:c35dab33c427 21 *
mbed_official 68:d3d0e710b443 22 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
mbed_official 68:d3d0e710b443 23 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
mbed_official 53:c35dab33c427 24 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
mbed_official 53:c35dab33c427 25 * ARE DISCLAIMED. IN NO EVENT SHALL COPYRIGHT HOLDERS AND CONTRIBUTORS BE
mbed_official 53:c35dab33c427 26 * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
mbed_official 68:d3d0e710b443 27 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
mbed_official 68:d3d0e710b443 28 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
mbed_official 68:d3d0e710b443 29 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
mbed_official 68:d3d0e710b443 30 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
mbed_official 53:c35dab33c427 31 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
mbed_official 53:c35dab33c427 32 * POSSIBILITY OF SUCH DAMAGE.
mbed_official 53:c35dab33c427 33 *---------------------------------------------------------------------------*/
mbed_official 53:c35dab33c427 34
mbed_official 53:c35dab33c427 35 NAME HAL_CM3.S
mbed_official 53:c35dab33c427 36
mbed_official 59:28712e303960 37 #define TCB_TSTACK 40
mbed_official 53:c35dab33c427 38
mbed_official 53:c35dab33c427 39 EXTERN os_flags
mbed_official 53:c35dab33c427 40 EXTERN os_tsk
mbed_official 53:c35dab33c427 41 EXTERN rt_alloc_box
mbed_official 53:c35dab33c427 42 EXTERN rt_free_box
mbed_official 53:c35dab33c427 43 EXTERN rt_stk_check
mbed_official 53:c35dab33c427 44 EXTERN rt_pop_req
mbed_official 53:c35dab33c427 45 EXTERN rt_systick
mbed_official 53:c35dab33c427 46 EXTERN os_tick_irqack
mbed_official 53:c35dab33c427 47 EXTERN SVC_Table
mbed_official 53:c35dab33c427 48 EXTERN SVC_Count
mbed_official 53:c35dab33c427 49
mbed_official 53:c35dab33c427 50 /*----------------------------------------------------------------------------
mbed_official 53:c35dab33c427 51 * Functions
mbed_official 53:c35dab33c427 52 *---------------------------------------------------------------------------*/
mbed_official 53:c35dab33c427 53
mbed_official 53:c35dab33c427 54 SECTION .text:CODE:NOROOT(2)
mbed_official 53:c35dab33c427 55 THUMB
mbed_official 53:c35dab33c427 56
mbed_official 53:c35dab33c427 57 /*--------------------------- rt_set_PSP ------------------------------------*/
mbed_official 53:c35dab33c427 58
mbed_official 53:c35dab33c427 59 ; void rt_set_PSP (U32 stack);
mbed_official 53:c35dab33c427 60
mbed_official 53:c35dab33c427 61 PUBLIC rt_set_PSP
mbed_official 53:c35dab33c427 62 rt_set_PSP:
mbed_official 53:c35dab33c427 63
mbed_official 53:c35dab33c427 64 MSR PSP,R0
mbed_official 53:c35dab33c427 65 BX LR
mbed_official 53:c35dab33c427 66
mbed_official 53:c35dab33c427 67
mbed_official 53:c35dab33c427 68 /*--------------------------- rt_get_PSP ------------------------------------*/
mbed_official 53:c35dab33c427 69
mbed_official 53:c35dab33c427 70 ; U32 rt_get_PSP (void);
mbed_official 53:c35dab33c427 71
mbed_official 53:c35dab33c427 72 PUBLIC rt_get_PSP
mbed_official 53:c35dab33c427 73 rt_get_PSP:
mbed_official 53:c35dab33c427 74
mbed_official 53:c35dab33c427 75 MRS R0,PSP
mbed_official 53:c35dab33c427 76 BX LR
mbed_official 53:c35dab33c427 77
mbed_official 53:c35dab33c427 78
mbed_official 53:c35dab33c427 79 /*--------------------------- os_set_env ------------------------------------*/
mbed_official 53:c35dab33c427 80
mbed_official 53:c35dab33c427 81 ; void os_set_env (void);
mbed_official 53:c35dab33c427 82 /* Switch to Unprivileged/Privileged Thread mode, use PSP. */
mbed_official 53:c35dab33c427 83
mbed_official 53:c35dab33c427 84 PUBLIC os_set_env
mbed_official 53:c35dab33c427 85 os_set_env:
mbed_official 53:c35dab33c427 86
mbed_official 53:c35dab33c427 87 MOV R0,SP /* PSP = MSP */
mbed_official 53:c35dab33c427 88 MSR PSP,R0
mbed_official 53:c35dab33c427 89 LDR R0,=os_flags
mbed_official 53:c35dab33c427 90 LDRB R0,[R0]
mbed_official 53:c35dab33c427 91 LSLS R0,#31
mbed_official 53:c35dab33c427 92 ITE NE
mbed_official 53:c35dab33c427 93 MOVNE R0,#0x02 /* Privileged Thread mode, use PSP */
mbed_official 53:c35dab33c427 94 MOVEQ R0,#0x03 /* Unprivileged Thread mode, use PSP */
mbed_official 53:c35dab33c427 95 MSR CONTROL,R0
mbed_official 53:c35dab33c427 96 BX LR
mbed_official 53:c35dab33c427 97
mbed_official 53:c35dab33c427 98
mbed_official 53:c35dab33c427 99 /*--------------------------- _alloc_box ------------------------------------*/
mbed_official 53:c35dab33c427 100
mbed_official 53:c35dab33c427 101 ; void *_alloc_box (void *box_mem);
mbed_official 53:c35dab33c427 102 /* Function wrapper for Unprivileged/Privileged mode. */
mbed_official 53:c35dab33c427 103
mbed_official 53:c35dab33c427 104 PUBLIC _alloc_box
mbed_official 53:c35dab33c427 105 _alloc_box:
mbed_official 53:c35dab33c427 106
mbed_official 53:c35dab33c427 107 LDR R12,=rt_alloc_box
mbed_official 53:c35dab33c427 108 MRS R3,IPSR
mbed_official 53:c35dab33c427 109 LSLS R3,#24
mbed_official 53:c35dab33c427 110 IT NE
mbed_official 53:c35dab33c427 111 BXNE R12
mbed_official 53:c35dab33c427 112 MRS R3,CONTROL
mbed_official 53:c35dab33c427 113 LSLS R3,#31
mbed_official 53:c35dab33c427 114 IT EQ
mbed_official 53:c35dab33c427 115 BXEQ R12
mbed_official 53:c35dab33c427 116 SVC 0
mbed_official 53:c35dab33c427 117 BX LR
mbed_official 53:c35dab33c427 118
mbed_official 53:c35dab33c427 119
mbed_official 53:c35dab33c427 120 /*--------------------------- _free_box -------------------------------------*/
mbed_official 53:c35dab33c427 121
mbed_official 53:c35dab33c427 122 ; int _free_box (void *box_mem, void *box);
mbed_official 53:c35dab33c427 123 /* Function wrapper for Unprivileged/Privileged mode. */
mbed_official 53:c35dab33c427 124
mbed_official 53:c35dab33c427 125 PUBLIC _free_box
mbed_official 53:c35dab33c427 126 _free_box:
mbed_official 53:c35dab33c427 127
mbed_official 53:c35dab33c427 128 LDR R12,=rt_free_box
mbed_official 53:c35dab33c427 129 MRS R3,IPSR
mbed_official 53:c35dab33c427 130 LSLS R3,#24
mbed_official 53:c35dab33c427 131 IT NE
mbed_official 53:c35dab33c427 132 BXNE R12
mbed_official 53:c35dab33c427 133 MRS R3,CONTROL
mbed_official 53:c35dab33c427 134 LSLS R3,#31
mbed_official 53:c35dab33c427 135 IT EQ
mbed_official 53:c35dab33c427 136 BXEQ R12
mbed_official 53:c35dab33c427 137 SVC 0
mbed_official 53:c35dab33c427 138 BX LR
mbed_official 53:c35dab33c427 139
mbed_official 53:c35dab33c427 140
mbed_official 53:c35dab33c427 141 /*-------------------------- SVC_Handler ------------------------------------*/
mbed_official 53:c35dab33c427 142
mbed_official 53:c35dab33c427 143 ; void SVC_Handler (void);
mbed_official 53:c35dab33c427 144
mbed_official 53:c35dab33c427 145 PUBLIC SVC_Handler
mbed_official 53:c35dab33c427 146 SVC_Handler:
mbed_official 53:c35dab33c427 147
mbed_official 53:c35dab33c427 148 MRS R0,PSP /* Read PSP */
mbed_official 53:c35dab33c427 149 LDR R1,[R0,#24] /* Read Saved PC from Stack */
mbed_official 53:c35dab33c427 150 LDRB R1,[R1,#-2] /* Load SVC Number */
mbed_official 53:c35dab33c427 151 CBNZ R1,SVC_User
mbed_official 53:c35dab33c427 152
mbed_official 53:c35dab33c427 153 LDM R0,{R0-R3,R12} /* Read R0-R3,R12 from stack */
mbed_official 53:c35dab33c427 154 BLX R12 /* Call SVC Function */
mbed_official 53:c35dab33c427 155
mbed_official 53:c35dab33c427 156 MRS R12,PSP /* Read PSP */
mbed_official 53:c35dab33c427 157 STM R12,{R0-R2} /* Store return values */
mbed_official 53:c35dab33c427 158
mbed_official 53:c35dab33c427 159 LDR R3,=os_tsk
mbed_official 53:c35dab33c427 160 LDM R3,{R1,R2} /* os_tsk.run, os_tsk.new */
mbed_official 53:c35dab33c427 161 CMP R1,R2
mbed_official 53:c35dab33c427 162 BEQ SVC_Exit /* no task switch */
mbed_official 53:c35dab33c427 163
mbed_official 53:c35dab33c427 164 CBZ R1,SVC_Next /* Runtask deleted? */
mbed_official 53:c35dab33c427 165 STMDB R12!,{R4-R11} /* Save Old context */
mbed_official 53:c35dab33c427 166 STR R12,[R1,#TCB_TSTACK] /* Update os_tsk.run->tsk_stack */
mbed_official 53:c35dab33c427 167
mbed_official 53:c35dab33c427 168 PUSH {R2,R3}
mbed_official 53:c35dab33c427 169 BL rt_stk_check /* Check for Stack overflow */
mbed_official 53:c35dab33c427 170 POP {R2,R3}
mbed_official 53:c35dab33c427 171
mbed_official 53:c35dab33c427 172 SVC_Next:
mbed_official 53:c35dab33c427 173 STR R2,[R3] /* os_tsk.run = os_tsk.new */
mbed_official 53:c35dab33c427 174
mbed_official 53:c35dab33c427 175 LDR R12,[R2,#TCB_TSTACK] /* os_tsk.new->tsk_stack */
mbed_official 53:c35dab33c427 176 LDMIA R12!,{R4-R11} /* Restore New Context */
mbed_official 53:c35dab33c427 177 MSR PSP,R12 /* Write PSP */
mbed_official 53:c35dab33c427 178
mbed_official 53:c35dab33c427 179 SVC_Exit:
mbed_official 53:c35dab33c427 180 MVN LR,#~0xFFFFFFFD /* set EXC_RETURN value */
mbed_official 53:c35dab33c427 181 BX LR
mbed_official 53:c35dab33c427 182
mbed_official 53:c35dab33c427 183 /*------------------- User SVC ------------------------------*/
mbed_official 53:c35dab33c427 184
mbed_official 53:c35dab33c427 185 SVC_User:
mbed_official 53:c35dab33c427 186 PUSH {R4,LR} /* Save Registers */
mbed_official 53:c35dab33c427 187 LDR R2,=SVC_Count
mbed_official 53:c35dab33c427 188 LDR R2,[R2]
mbed_official 53:c35dab33c427 189 CMP R1,R2
mbed_official 53:c35dab33c427 190 BHI SVC_Done /* Overflow */
mbed_official 53:c35dab33c427 191
mbed_official 53:c35dab33c427 192 LDR R4,=SVC_Table-4
mbed_official 53:c35dab33c427 193 LDR R4,[R4,R1,LSL #2] /* Load SVC Function Address */
mbed_official 53:c35dab33c427 194
mbed_official 53:c35dab33c427 195 LDM R0,{R0-R3,R12} /* Read R0-R3,R12 from stack */
mbed_official 53:c35dab33c427 196 BLX R4 /* Call SVC Function */
mbed_official 53:c35dab33c427 197
mbed_official 53:c35dab33c427 198 MRS R12,PSP
mbed_official 53:c35dab33c427 199 STM R12,{R0-R3} /* Function return values */
mbed_official 53:c35dab33c427 200 SVC_Done:
mbed_official 53:c35dab33c427 201 POP {R4,PC} /* RETI */
mbed_official 68:d3d0e710b443 202
mbed_official 53:c35dab33c427 203
mbed_official 53:c35dab33c427 204 /*-------------------------- PendSV_Handler ---------------------------------*/
mbed_official 53:c35dab33c427 205
mbed_official 53:c35dab33c427 206 ; void PendSV_Handler (void);
mbed_official 53:c35dab33c427 207
mbed_official 53:c35dab33c427 208 PUBLIC PendSV_Handler
mbed_official 53:c35dab33c427 209 PendSV_Handler:
mbed_official 53:c35dab33c427 210
mbed_official 53:c35dab33c427 211 BL rt_pop_req
mbed_official 53:c35dab33c427 212
mbed_official 53:c35dab33c427 213 Sys_Switch:
mbed_official 53:c35dab33c427 214 LDR R3,=os_tsk
mbed_official 53:c35dab33c427 215 LDM R3,{R1,R2} /* os_tsk.run, os_tsk.new */
mbed_official 53:c35dab33c427 216 CMP R1,R2
mbed_official 53:c35dab33c427 217 BEQ Sys_Exit
mbed_official 53:c35dab33c427 218
mbed_official 53:c35dab33c427 219 MRS R12,PSP /* Read PSP */
mbed_official 53:c35dab33c427 220 STMDB R12!,{R4-R11} /* Save Old context */
mbed_official 53:c35dab33c427 221 STR R12,[R1,#TCB_TSTACK] /* Update os_tsk.run->tsk_stack */
mbed_official 53:c35dab33c427 222
mbed_official 53:c35dab33c427 223 PUSH {R2,R3}
mbed_official 53:c35dab33c427 224 BL rt_stk_check /* Check for Stack overflow */
mbed_official 53:c35dab33c427 225 POP {R2,R3}
mbed_official 53:c35dab33c427 226
mbed_official 53:c35dab33c427 227 STR R2,[R3] /* os_tsk.run = os_tsk.new */
mbed_official 53:c35dab33c427 228
mbed_official 53:c35dab33c427 229 LDR R12,[R2,#TCB_TSTACK] /* os_tsk.new->tsk_stack */
mbed_official 53:c35dab33c427 230 LDMIA R12!,{R4-R11} /* Restore New Context */
mbed_official 53:c35dab33c427 231 MSR PSP,R12 /* Write PSP */
mbed_official 53:c35dab33c427 232
mbed_official 53:c35dab33c427 233 Sys_Exit:
mbed_official 53:c35dab33c427 234 MVN LR,#~0xFFFFFFFD /* set EXC_RETURN value */
mbed_official 53:c35dab33c427 235 BX LR /* Return to Thread Mode */
mbed_official 53:c35dab33c427 236
mbed_official 53:c35dab33c427 237
mbed_official 53:c35dab33c427 238 /*-------------------------- SysTick_Handler --------------------------------*/
mbed_official 53:c35dab33c427 239
mbed_official 53:c35dab33c427 240 ; void SysTick_Handler (void);
mbed_official 53:c35dab33c427 241
mbed_official 53:c35dab33c427 242 PUBLIC SysTick_Handler
mbed_official 53:c35dab33c427 243 SysTick_Handler:
mbed_official 53:c35dab33c427 244
mbed_official 53:c35dab33c427 245 BL rt_systick
mbed_official 53:c35dab33c427 246 B Sys_Switch
mbed_official 53:c35dab33c427 247
mbed_official 53:c35dab33c427 248
mbed_official 53:c35dab33c427 249 /*-------------------------- OS_Tick_Handler --------------------------------*/
mbed_official 53:c35dab33c427 250
mbed_official 53:c35dab33c427 251 ; void OS_Tick_Handler (void);
mbed_official 53:c35dab33c427 252
mbed_official 53:c35dab33c427 253 PUBLIC OS_Tick_Handler
mbed_official 53:c35dab33c427 254 OS_Tick_Handler:
mbed_official 53:c35dab33c427 255
mbed_official 53:c35dab33c427 256 BL os_tick_irqack
mbed_official 53:c35dab33c427 257 BL rt_systick
mbed_official 53:c35dab33c427 258 B Sys_Switch
mbed_official 53:c35dab33c427 259
mbed_official 53:c35dab33c427 260
mbed_official 53:c35dab33c427 261 END
mbed_official 53:c35dab33c427 262
mbed_official 53:c35dab33c427 263 /*----------------------------------------------------------------------------
mbed_official 53:c35dab33c427 264 * end of file
mbed_official 53:c35dab33c427 265 *---------------------------------------------------------------------------*/