Austin Blackstone / Mbed 2 deprecated client-lwip-lightswitch-demo-expanded

mbed client lightswitch demo

Dependencies:   mbed Socket lwip-eth lwip-sys lwip

Fork of mbed-client-classic-example-lwip by Austin Blackstone

mbed-rtos/rtx/TARGET_CORTEX_M/TARGET_RTOS_M4_M7/TOOLCHAIN_ARM/HAL_CM4.c@11:cada08fc8a70, 2016-06-09 (annotated)

Committer:
mbedAustin
Date:
Thu Jun 09 17:08:36 2016 +0000
Revision:
11:cada08fc8a70
Commit for public Consumption

Who changed what in which revision?

UserRevisionLine numberNew contents of line
mbedAustin 11:cada08fc8a70 1 /*----------------------------------------------------------------------------
mbedAustin 11:cada08fc8a70 2 * RL-ARM - RTX
mbedAustin 11:cada08fc8a70 3 *----------------------------------------------------------------------------
mbedAustin 11:cada08fc8a70 4 * Name: HAL_CM4.C
mbedAustin 11:cada08fc8a70 5 * Purpose: Hardware Abstraction Layer for Cortex-M4
mbedAustin 11:cada08fc8a70 6 * Rev.: V4.70
mbedAustin 11:cada08fc8a70 7 *----------------------------------------------------------------------------
mbedAustin 11:cada08fc8a70 8 *
mbedAustin 11:cada08fc8a70 9 * Copyright (c) 1999-2009 KEIL, 2009-2013 ARM Germany GmbH
mbedAustin 11:cada08fc8a70 10 * All rights reserved.
mbedAustin 11:cada08fc8a70 11 * Redistribution and use in source and binary forms, with or without
mbedAustin 11:cada08fc8a70 12 * modification, are permitted provided that the following conditions are met:
mbedAustin 11:cada08fc8a70 13 * - Redistributions of source code must retain the above copyright
mbedAustin 11:cada08fc8a70 14 * notice, this list of conditions and the following disclaimer.
mbedAustin 11:cada08fc8a70 15 * - Redistributions in binary form must reproduce the above copyright
mbedAustin 11:cada08fc8a70 16 * notice, this list of conditions and the following disclaimer in the
mbedAustin 11:cada08fc8a70 17 * documentation and/or other materials provided with the distribution.
mbedAustin 11:cada08fc8a70 18 * - Neither the name of ARM nor the names of its contributors may be used
mbedAustin 11:cada08fc8a70 19 * to endorse or promote products derived from this software without
mbedAustin 11:cada08fc8a70 20 * specific prior written permission.
mbedAustin 11:cada08fc8a70 21 *
mbedAustin 11:cada08fc8a70 22 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
mbedAustin 11:cada08fc8a70 23 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
mbedAustin 11:cada08fc8a70 24 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
mbedAustin 11:cada08fc8a70 25 * ARE DISCLAIMED. IN NO EVENT SHALL COPYRIGHT HOLDERS AND CONTRIBUTORS BE
mbedAustin 11:cada08fc8a70 26 * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
mbedAustin 11:cada08fc8a70 27 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
mbedAustin 11:cada08fc8a70 28 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
mbedAustin 11:cada08fc8a70 29 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
mbedAustin 11:cada08fc8a70 30 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
mbedAustin 11:cada08fc8a70 31 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
mbedAustin 11:cada08fc8a70 32 * POSSIBILITY OF SUCH DAMAGE.
mbedAustin 11:cada08fc8a70 33 *---------------------------------------------------------------------------*/
mbedAustin 11:cada08fc8a70 34
mbedAustin 11:cada08fc8a70 35 #include "rt_TypeDef.h"
mbedAustin 11:cada08fc8a70 36 #include "RTX_Conf.h"
mbedAustin 11:cada08fc8a70 37 #include "rt_System.h"
mbedAustin 11:cada08fc8a70 38 #include "rt_HAL_CM.h"
mbedAustin 11:cada08fc8a70 39 #include "rt_Task.h"
mbedAustin 11:cada08fc8a70 40 #include "rt_MemBox.h"
mbedAustin 11:cada08fc8a70 41
mbedAustin 11:cada08fc8a70 42
mbedAustin 11:cada08fc8a70 43 /*----------------------------------------------------------------------------
mbedAustin 11:cada08fc8a70 44 * Functions
mbedAustin 11:cada08fc8a70 45 *---------------------------------------------------------------------------*/
mbedAustin 11:cada08fc8a70 46
mbedAustin 11:cada08fc8a70 47
mbedAustin 11:cada08fc8a70 48 /*--------------------------- rt_set_PSP ------------------------------------*/
mbedAustin 11:cada08fc8a70 49
mbedAustin 11:cada08fc8a70 50 __asm void rt_set_PSP (U32 stack) {
mbedAustin 11:cada08fc8a70 51 MSR PSP,R0
mbedAustin 11:cada08fc8a70 52 BX LR
mbedAustin 11:cada08fc8a70 53 }
mbedAustin 11:cada08fc8a70 54
mbedAustin 11:cada08fc8a70 55
mbedAustin 11:cada08fc8a70 56 /*--------------------------- rt_get_PSP ------------------------------------*/
mbedAustin 11:cada08fc8a70 57
mbedAustin 11:cada08fc8a70 58 __asm U32 rt_get_PSP (void) {
mbedAustin 11:cada08fc8a70 59 MRS R0,PSP
mbedAustin 11:cada08fc8a70 60 BX LR
mbedAustin 11:cada08fc8a70 61 }
mbedAustin 11:cada08fc8a70 62
mbedAustin 11:cada08fc8a70 63
mbedAustin 11:cada08fc8a70 64 /*--------------------------- os_set_env ------------------------------------*/
mbedAustin 11:cada08fc8a70 65
mbedAustin 11:cada08fc8a70 66 __asm void os_set_env (void) {
mbedAustin 11:cada08fc8a70 67 /* Switch to Unprivileged/Privileged Thread mode, use PSP. */
mbedAustin 11:cada08fc8a70 68 MOV R0,SP ; PSP = MSP
mbedAustin 11:cada08fc8a70 69 MSR PSP,R0
mbedAustin 11:cada08fc8a70 70 LDR R0,=__cpp(&os_flags)
mbedAustin 11:cada08fc8a70 71 LDRB R0,[R0]
mbedAustin 11:cada08fc8a70 72 LSLS R0,#31
mbedAustin 11:cada08fc8a70 73 MOVNE R0,#0x02 ; Privileged Thread mode, use PSP
mbedAustin 11:cada08fc8a70 74 MOVEQ R0,#0x03 ; Unprivileged Thread mode, use PSP
mbedAustin 11:cada08fc8a70 75 MSR CONTROL,R0
mbedAustin 11:cada08fc8a70 76 BX LR
mbedAustin 11:cada08fc8a70 77
mbedAustin 11:cada08fc8a70 78 ALIGN
mbedAustin 11:cada08fc8a70 79 }
mbedAustin 11:cada08fc8a70 80
mbedAustin 11:cada08fc8a70 81
mbedAustin 11:cada08fc8a70 82 /*--------------------------- _alloc_box ------------------------------------*/
mbedAustin 11:cada08fc8a70 83
mbedAustin 11:cada08fc8a70 84 __asm void *_alloc_box (void *box_mem) {
mbedAustin 11:cada08fc8a70 85 /* Function wrapper for Unprivileged/Privileged mode. */
mbedAustin 11:cada08fc8a70 86 LDR R12,=__cpp(rt_alloc_box)
mbedAustin 11:cada08fc8a70 87 MRS R3,IPSR
mbedAustin 11:cada08fc8a70 88 LSLS R3,#24
mbedAustin 11:cada08fc8a70 89 BXNE R12
mbedAustin 11:cada08fc8a70 90 MRS R3,CONTROL
mbedAustin 11:cada08fc8a70 91 LSLS R3,#31
mbedAustin 11:cada08fc8a70 92 BXEQ R12
mbedAustin 11:cada08fc8a70 93 SVC 0
mbedAustin 11:cada08fc8a70 94 BX LR
mbedAustin 11:cada08fc8a70 95
mbedAustin 11:cada08fc8a70 96 ALIGN
mbedAustin 11:cada08fc8a70 97 }
mbedAustin 11:cada08fc8a70 98
mbedAustin 11:cada08fc8a70 99
mbedAustin 11:cada08fc8a70 100 /*--------------------------- _free_box -------------------------------------*/
mbedAustin 11:cada08fc8a70 101
mbedAustin 11:cada08fc8a70 102 __asm int _free_box (void *box_mem, void *box) {
mbedAustin 11:cada08fc8a70 103 /* Function wrapper for Unprivileged/Privileged mode. */
mbedAustin 11:cada08fc8a70 104 LDR R12,=__cpp(rt_free_box)
mbedAustin 11:cada08fc8a70 105 MRS R3,IPSR
mbedAustin 11:cada08fc8a70 106 LSLS R3,#24
mbedAustin 11:cada08fc8a70 107 BXNE R12
mbedAustin 11:cada08fc8a70 108 MRS R3,CONTROL
mbedAustin 11:cada08fc8a70 109 LSLS R3,#31
mbedAustin 11:cada08fc8a70 110 BXEQ R12
mbedAustin 11:cada08fc8a70 111 SVC 0
mbedAustin 11:cada08fc8a70 112 BX LR
mbedAustin 11:cada08fc8a70 113
mbedAustin 11:cada08fc8a70 114 ALIGN
mbedAustin 11:cada08fc8a70 115 }
mbedAustin 11:cada08fc8a70 116
mbedAustin 11:cada08fc8a70 117
mbedAustin 11:cada08fc8a70 118 /*-------------------------- SVC_Handler ------------------------------------*/
mbedAustin 11:cada08fc8a70 119
mbedAustin 11:cada08fc8a70 120 __asm void SVC_Handler (void) {
mbedAustin 11:cada08fc8a70 121 PRESERVE8
mbedAustin 11:cada08fc8a70 122
mbedAustin 11:cada08fc8a70 123 IMPORT SVC_Count
mbedAustin 11:cada08fc8a70 124 IMPORT SVC_Table
mbedAustin 11:cada08fc8a70 125 IMPORT rt_stk_check
mbedAustin 11:cada08fc8a70 126
mbedAustin 11:cada08fc8a70 127 #ifdef IFX_XMC4XXX
mbedAustin 11:cada08fc8a70 128 EXPORT SVC_Handler_Veneer
mbedAustin 11:cada08fc8a70 129 SVC_Handler_Veneer
mbedAustin 11:cada08fc8a70 130 #endif
mbedAustin 11:cada08fc8a70 131
mbedAustin 11:cada08fc8a70 132 MRS R0,PSP ; Read PSP
mbedAustin 11:cada08fc8a70 133 LDR R1,[R0,#24] ; Read Saved PC from Stack
mbedAustin 11:cada08fc8a70 134 LDRB R1,[R1,#-2] ; Load SVC Number
mbedAustin 11:cada08fc8a70 135 CBNZ R1,SVC_User
mbedAustin 11:cada08fc8a70 136
mbedAustin 11:cada08fc8a70 137 LDM R0,{R0-R3,R12} ; Read R0-R3,R12 from stack
mbedAustin 11:cada08fc8a70 138 PUSH {R4,LR} ; Save EXC_RETURN
mbedAustin 11:cada08fc8a70 139 BLX R12 ; Call SVC Function
mbedAustin 11:cada08fc8a70 140 POP {R4,LR} ; Restore EXC_RETURN
mbedAustin 11:cada08fc8a70 141
mbedAustin 11:cada08fc8a70 142 MRS R12,PSP ; Read PSP
mbedAustin 11:cada08fc8a70 143 STM R12,{R0-R2} ; Store return values
mbedAustin 11:cada08fc8a70 144
mbedAustin 11:cada08fc8a70 145 LDR R3,=__cpp(&os_tsk)
mbedAustin 11:cada08fc8a70 146 LDM R3,{R1,R2} ; os_tsk.run, os_tsk.new
mbedAustin 11:cada08fc8a70 147 CMP R1,R2
mbedAustin 11:cada08fc8a70 148 #ifdef IFX_XMC4XXX
mbedAustin 11:cada08fc8a70 149 PUSHEQ {LR}
mbedAustin 11:cada08fc8a70 150 POPEQ {PC}
mbedAustin 11:cada08fc8a70 151 #else
mbedAustin 11:cada08fc8a70 152 BXEQ LR ; RETI, no task switch
mbedAustin 11:cada08fc8a70 153 #endif
mbedAustin 11:cada08fc8a70 154
mbedAustin 11:cada08fc8a70 155 CBZ R1,SVC_Next ; Runtask deleted?
mbedAustin 11:cada08fc8a70 156 TST LR,#0x10 ; is it extended frame?
mbedAustin 11:cada08fc8a70 157 VSTMDBEQ R12!,{S16-S31} ; yes, stack also VFP hi-regs
mbedAustin 11:cada08fc8a70 158 MOVEQ R0,#0x01 ; os_tsk->stack_frame val
mbedAustin 11:cada08fc8a70 159 MOVNE R0,#0x00
mbedAustin 11:cada08fc8a70 160 STRB R0,[R1,#TCB_STACKF] ; os_tsk.run->stack_frame = val
mbedAustin 11:cada08fc8a70 161 STMDB R12!,{R4-R11} ; Save Old context
mbedAustin 11:cada08fc8a70 162 STR R12,[R1,#TCB_TSTACK] ; Update os_tsk.run->tsk_stack
mbedAustin 11:cada08fc8a70 163
mbedAustin 11:cada08fc8a70 164 PUSH {R2,R3}
mbedAustin 11:cada08fc8a70 165 BL rt_stk_check ; Check for Stack overflow
mbedAustin 11:cada08fc8a70 166 POP {R2,R3}
mbedAustin 11:cada08fc8a70 167
mbedAustin 11:cada08fc8a70 168 SVC_Next
mbedAustin 11:cada08fc8a70 169 STR R2,[R3] ; os_tsk.run = os_tsk.new
mbedAustin 11:cada08fc8a70 170
mbedAustin 11:cada08fc8a70 171 LDR R12,[R2,#TCB_TSTACK] ; os_tsk.new->tsk_stack
mbedAustin 11:cada08fc8a70 172 LDMIA R12!,{R4-R11} ; Restore New Context
mbedAustin 11:cada08fc8a70 173 LDRB R0,[R2,#TCB_STACKF] ; Stack Frame
mbedAustin 11:cada08fc8a70 174 CMP R0,#0 ; Basic/Extended Stack Frame
mbedAustin 11:cada08fc8a70 175 VLDMIANE R12!,{S16-S31} ; restore VFP hi-registers
mbedAustin 11:cada08fc8a70 176 MVNNE LR,#:NOT:0xFFFFFFED ; set EXC_RETURN value
mbedAustin 11:cada08fc8a70 177 MVNEQ LR,#:NOT:0xFFFFFFFD
mbedAustin 11:cada08fc8a70 178 MSR PSP,R12 ; Write PSP
mbedAustin 11:cada08fc8a70 179
mbedAustin 11:cada08fc8a70 180 SVC_Exit
mbedAustin 11:cada08fc8a70 181 #ifdef IFX_XMC4XXX
mbedAustin 11:cada08fc8a70 182 PUSH {LR}
mbedAustin 11:cada08fc8a70 183 POP {PC}
mbedAustin 11:cada08fc8a70 184 #else
mbedAustin 11:cada08fc8a70 185 BX LR
mbedAustin 11:cada08fc8a70 186 #endif
mbedAustin 11:cada08fc8a70 187
mbedAustin 11:cada08fc8a70 188 /*------------------- User SVC ------------------------------*/
mbedAustin 11:cada08fc8a70 189
mbedAustin 11:cada08fc8a70 190 SVC_User
mbedAustin 11:cada08fc8a70 191 PUSH {R4,LR} ; Save Registers
mbedAustin 11:cada08fc8a70 192 LDR R2,=SVC_Count
mbedAustin 11:cada08fc8a70 193 LDR R2,[R2]
mbedAustin 11:cada08fc8a70 194 CMP R1,R2
mbedAustin 11:cada08fc8a70 195 BHI SVC_Done ; Overflow
mbedAustin 11:cada08fc8a70 196
mbedAustin 11:cada08fc8a70 197 LDR R4,=SVC_Table-4
mbedAustin 11:cada08fc8a70 198 LDR R4,[R4,R1,LSL #2] ; Load SVC Function Address
mbedAustin 11:cada08fc8a70 199
mbedAustin 11:cada08fc8a70 200 LDM R0,{R0-R3,R12} ; Read R0-R3,R12 from stack
mbedAustin 11:cada08fc8a70 201 BLX R4 ; Call SVC Function
mbedAustin 11:cada08fc8a70 202
mbedAustin 11:cada08fc8a70 203 MRS R12,PSP
mbedAustin 11:cada08fc8a70 204 STM R12,{R0-R3} ; Function return values
mbedAustin 11:cada08fc8a70 205 SVC_Done
mbedAustin 11:cada08fc8a70 206 POP {R4,PC} ; RETI
mbedAustin 11:cada08fc8a70 207
mbedAustin 11:cada08fc8a70 208 ALIGN
mbedAustin 11:cada08fc8a70 209 }
mbedAustin 11:cada08fc8a70 210
mbedAustin 11:cada08fc8a70 211
mbedAustin 11:cada08fc8a70 212 /*-------------------------- PendSV_Handler ---------------------------------*/
mbedAustin 11:cada08fc8a70 213
mbedAustin 11:cada08fc8a70 214 __asm void PendSV_Handler (void) {
mbedAustin 11:cada08fc8a70 215 PRESERVE8
mbedAustin 11:cada08fc8a70 216
mbedAustin 11:cada08fc8a70 217 #ifdef IFX_XMC4XXX
mbedAustin 11:cada08fc8a70 218 EXPORT PendSV_Handler_Veneer
mbedAustin 11:cada08fc8a70 219 PendSV_Handler_Veneer
mbedAustin 11:cada08fc8a70 220 #endif
mbedAustin 11:cada08fc8a70 221
mbedAustin 11:cada08fc8a70 222 PUSH {R4,LR} ; Save EXC_RETURN
mbedAustin 11:cada08fc8a70 223 BL __cpp(rt_pop_req)
mbedAustin 11:cada08fc8a70 224
mbedAustin 11:cada08fc8a70 225 Sys_Switch
mbedAustin 11:cada08fc8a70 226 POP {R4,LR} ; Restore EXC_RETURN
mbedAustin 11:cada08fc8a70 227
mbedAustin 11:cada08fc8a70 228 LDR R3,=__cpp(&os_tsk)
mbedAustin 11:cada08fc8a70 229 LDM R3,{R1,R2} ; os_tsk.run, os_tsk.new
mbedAustin 11:cada08fc8a70 230 CMP R1,R2
mbedAustin 11:cada08fc8a70 231 #ifdef IFX_XMC4XXX
mbedAustin 11:cada08fc8a70 232 PUSHEQ {LR}
mbedAustin 11:cada08fc8a70 233 POPEQ {PC}
mbedAustin 11:cada08fc8a70 234 #else
mbedAustin 11:cada08fc8a70 235 BXEQ LR ; RETI, no task switch
mbedAustin 11:cada08fc8a70 236 #endif
mbedAustin 11:cada08fc8a70 237
mbedAustin 11:cada08fc8a70 238 MRS R12,PSP ; Read PSP
mbedAustin 11:cada08fc8a70 239 TST LR,#0x10 ; is it extended frame?
mbedAustin 11:cada08fc8a70 240 VSTMDBEQ R12!,{S16-S31} ; yes, stack also VFP hi-regs
mbedAustin 11:cada08fc8a70 241 MOVEQ R0,#0x01 ; os_tsk->stack_frame val
mbedAustin 11:cada08fc8a70 242 MOVNE R0,#0x00
mbedAustin 11:cada08fc8a70 243 STRB R0,[R1,#TCB_STACKF] ; os_tsk.run->stack_frame = val
mbedAustin 11:cada08fc8a70 244 STMDB R12!,{R4-R11} ; Save Old context
mbedAustin 11:cada08fc8a70 245 STR R12,[R1,#TCB_TSTACK] ; Update os_tsk.run->tsk_stack
mbedAustin 11:cada08fc8a70 246
mbedAustin 11:cada08fc8a70 247 PUSH {R2,R3}
mbedAustin 11:cada08fc8a70 248 BL rt_stk_check ; Check for Stack overflow
mbedAustin 11:cada08fc8a70 249 POP {R2,R3}
mbedAustin 11:cada08fc8a70 250
mbedAustin 11:cada08fc8a70 251 STR R2,[R3] ; os_tsk.run = os_tsk.new
mbedAustin 11:cada08fc8a70 252
mbedAustin 11:cada08fc8a70 253 LDR R12,[R2,#TCB_TSTACK] ; os_tsk.new->tsk_stack
mbedAustin 11:cada08fc8a70 254 LDMIA R12!,{R4-R11} ; Restore New Context
mbedAustin 11:cada08fc8a70 255 LDRB R0,[R2,#TCB_STACKF] ; Stack Frame
mbedAustin 11:cada08fc8a70 256 CMP R0,#0 ; Basic/Extended Stack Frame
mbedAustin 11:cada08fc8a70 257 VLDMIANE R12!,{S16-S31} ; restore VFP hi-regs
mbedAustin 11:cada08fc8a70 258 MVNNE LR,#:NOT:0xFFFFFFED ; set EXC_RETURN value
mbedAustin 11:cada08fc8a70 259 MVNEQ LR,#:NOT:0xFFFFFFFD
mbedAustin 11:cada08fc8a70 260 MSR PSP,R12 ; Write PSP
mbedAustin 11:cada08fc8a70 261
mbedAustin 11:cada08fc8a70 262 Sys_Exit
mbedAustin 11:cada08fc8a70 263 #ifdef IFX_XMC4XXX
mbedAustin 11:cada08fc8a70 264 PUSH {LR}
mbedAustin 11:cada08fc8a70 265 POP {PC}
mbedAustin 11:cada08fc8a70 266 #else
mbedAustin 11:cada08fc8a70 267 BX LR ; Return to Thread Mode
mbedAustin 11:cada08fc8a70 268 #endif
mbedAustin 11:cada08fc8a70 269
mbedAustin 11:cada08fc8a70 270 ALIGN
mbedAustin 11:cada08fc8a70 271 }
mbedAustin 11:cada08fc8a70 272
mbedAustin 11:cada08fc8a70 273
mbedAustin 11:cada08fc8a70 274 /*-------------------------- SysTick_Handler --------------------------------*/
mbedAustin 11:cada08fc8a70 275
mbedAustin 11:cada08fc8a70 276 __asm void SysTick_Handler (void) {
mbedAustin 11:cada08fc8a70 277 PRESERVE8
mbedAustin 11:cada08fc8a70 278
mbedAustin 11:cada08fc8a70 279 #ifdef IFX_XMC4XXX
mbedAustin 11:cada08fc8a70 280 EXPORT SysTick_Handler_Veneer
mbedAustin 11:cada08fc8a70 281 SysTick_Handler_Veneer
mbedAustin 11:cada08fc8a70 282 #endif
mbedAustin 11:cada08fc8a70 283
mbedAustin 11:cada08fc8a70 284 PUSH {R4,LR} ; Save EXC_RETURN
mbedAustin 11:cada08fc8a70 285 BL __cpp(rt_systick)
mbedAustin 11:cada08fc8a70 286 B Sys_Switch
mbedAustin 11:cada08fc8a70 287
mbedAustin 11:cada08fc8a70 288 ALIGN
mbedAustin 11:cada08fc8a70 289 }
mbedAustin 11:cada08fc8a70 290
mbedAustin 11:cada08fc8a70 291
mbedAustin 11:cada08fc8a70 292 /*-------------------------- OS_Tick_Handler --------------------------------*/
mbedAustin 11:cada08fc8a70 293
mbedAustin 11:cada08fc8a70 294 __asm void OS_Tick_Handler (void) {
mbedAustin 11:cada08fc8a70 295 PRESERVE8
mbedAustin 11:cada08fc8a70 296
mbedAustin 11:cada08fc8a70 297 PUSH {R4,LR} ; Save EXC_RETURN
mbedAustin 11:cada08fc8a70 298 BL __cpp(os_tick_irqack)
mbedAustin 11:cada08fc8a70 299 BL __cpp(rt_systick)
mbedAustin 11:cada08fc8a70 300 B Sys_Switch
mbedAustin 11:cada08fc8a70 301
mbedAustin 11:cada08fc8a70 302 ALIGN
mbedAustin 11:cada08fc8a70 303 }
mbedAustin 11:cada08fc8a70 304
mbedAustin 11:cada08fc8a70 305
mbedAustin 11:cada08fc8a70 306 /*----------------------------------------------------------------------------
mbedAustin 11:cada08fc8a70 307 * end of file
mbedAustin 11:cada08fc8a70 308 *---------------------------------------------------------------------------*/
mbedAustin 11:cada08fc8a70 309