Arlindo Montagnoli / Mbed 2 deprecated ProjetoBB

ProjetoBB

Dependencies:   F7_Ethernet WebSocketClient mbed mcp3008

Fork of Nucleo_F746ZG_Ethernet by Dieter Graef

mbed-rtos/rtx/TARGET_ARM7/ARM7/TOOLCHAIN_GCC/HAL_CM0.S@0:f9b6112278fe, 2016-06-18 (annotated)

Committer:
DieterGraef
Date:
Sat Jun 18 10:49:12 2016 +0000
Revision:
0:f9b6112278fe
Ethernet for the NUCLEO STM32F746 Board Testprogram uses DHCP and NTP to set the clock

Who changed what in which revision?

UserRevisionLine numberNew contents of line
DieterGraef 0:f9b6112278fe 1 /*----------------------------------------------------------------------------
DieterGraef 0:f9b6112278fe 2 * RL-ARM - RTX
DieterGraef 0:f9b6112278fe 3 *----------------------------------------------------------------------------
DieterGraef 0:f9b6112278fe 4 * Name: HAL_CM0.S
DieterGraef 0:f9b6112278fe 5 * Purpose: Hardware Abstraction Layer for ARM7TDMI
DieterGraef 0:f9b6112278fe 6 * Rev.: V1.0
DieterGraef 0:f9b6112278fe 7 *----------------------------------------------------------------------------
DieterGraef 0:f9b6112278fe 8 *
DieterGraef 0:f9b6112278fe 9 * Copyright (c) 1999-2009 KEIL, 2009-2015 ARM Germany GmbH
DieterGraef 0:f9b6112278fe 10 * All rights reserved.
DieterGraef 0:f9b6112278fe 11 * Redistribution and use in source and binary forms, with or without
DieterGraef 0:f9b6112278fe 12 * modification, are permitted provided that the following conditions are met:
DieterGraef 0:f9b6112278fe 13 * - Redistributions of source code must retain the above copyright
DieterGraef 0:f9b6112278fe 14 * notice, this list of conditions and the following disclaimer.
DieterGraef 0:f9b6112278fe 15 * - Redistributions in binary form must reproduce the above copyright
DieterGraef 0:f9b6112278fe 16 * notice, this list of conditions and the following disclaimer in the
DieterGraef 0:f9b6112278fe 17 * documentation and/or other materials provided with the distribution.
DieterGraef 0:f9b6112278fe 18 * - Neither the name of ARM nor the names of its contributors may be used
DieterGraef 0:f9b6112278fe 19 * to endorse or promote products derived from this software without
DieterGraef 0:f9b6112278fe 20 * specific prior written permission.
DieterGraef 0:f9b6112278fe 21 *
DieterGraef 0:f9b6112278fe 22 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
DieterGraef 0:f9b6112278fe 23 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
DieterGraef 0:f9b6112278fe 24 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
DieterGraef 0:f9b6112278fe 25 * ARE DISCLAIMED. IN NO EVENT SHALL COPYRIGHT HOLDERS AND CONTRIBUTORS BE
DieterGraef 0:f9b6112278fe 26 * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
DieterGraef 0:f9b6112278fe 27 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
DieterGraef 0:f9b6112278fe 28 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
DieterGraef 0:f9b6112278fe 29 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
DieterGraef 0:f9b6112278fe 30 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
DieterGraef 0:f9b6112278fe 31 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
DieterGraef 0:f9b6112278fe 32 * POSSIBILITY OF SUCH DAMAGE.
DieterGraef 0:f9b6112278fe 33 *---------------------------------------------------------------------------*/
DieterGraef 0:f9b6112278fe 34
DieterGraef 0:f9b6112278fe 35 .file "HAL_CM0.S"
DieterGraef 0:f9b6112278fe 36 .syntax unified
DieterGraef 0:f9b6112278fe 37
DieterGraef 0:f9b6112278fe 38 .equ TCB_TSTACK, 40
DieterGraef 0:f9b6112278fe 39
DieterGraef 0:f9b6112278fe 40
DieterGraef 0:f9b6112278fe 41 /*----------------------------------------------------------------------------
DieterGraef 0:f9b6112278fe 42 * Functions
DieterGraef 0:f9b6112278fe 43 *---------------------------------------------------------------------------*/
DieterGraef 0:f9b6112278fe 44
DieterGraef 0:f9b6112278fe 45 .arm
DieterGraef 0:f9b6112278fe 46
DieterGraef 0:f9b6112278fe 47 .section ".text"
DieterGraef 0:f9b6112278fe 48 .align 2
DieterGraef 0:f9b6112278fe 49
DieterGraef 0:f9b6112278fe 50 /*-------------------------- Save Context --------------------------------*/
DieterGraef 0:f9b6112278fe 51 /* MUST be called the first */
DieterGraef 0:f9b6112278fe 52 .macro SaveContext
DieterGraef 0:f9b6112278fe 53
DieterGraef 0:f9b6112278fe 54 /* Push R0 as we are going to use the register. */ \
DieterGraef 0:f9b6112278fe 55 STMDB SP!, {R0}
DieterGraef 0:f9b6112278fe 56
DieterGraef 0:f9b6112278fe 57 /* Set R0 to SP(user) */
DieterGraef 0:f9b6112278fe 58 STMDB SP,{SP}^
DieterGraef 0:f9b6112278fe 59 NOP
DieterGraef 0:f9b6112278fe 60 SUB SP, SP, #4
DieterGraef 0:f9b6112278fe 61 LDMIA SP!,{R0}
DieterGraef 0:f9b6112278fe 62
DieterGraef 0:f9b6112278fe 63 /* Push the LR return address onto the user stack. */
DieterGraef 0:f9b6112278fe 64 STMDB R0!, {LR}
DieterGraef 0:f9b6112278fe 65
DieterGraef 0:f9b6112278fe 66 /* Now we have saved LR we can use it instead of R0. */
DieterGraef 0:f9b6112278fe 67 MOV LR, R0
DieterGraef 0:f9b6112278fe 68
DieterGraef 0:f9b6112278fe 69 /* Pop R0 so we can save it onto the system mode stack. */
DieterGraef 0:f9b6112278fe 70 LDMIA SP!, {R0}
DieterGraef 0:f9b6112278fe 71
DieterGraef 0:f9b6112278fe 72 /* Push all the system mode registers onto the task stack. */
DieterGraef 0:f9b6112278fe 73 STMDB LR,{R0-R12,LR}^ /* LR can not be changed because user's LR is used*/
DieterGraef 0:f9b6112278fe 74 NOP /* pass 1 cycle before changing LR */
DieterGraef 0:f9b6112278fe 75 SUB LR, LR, #14*4 /* change LR now -15 dwords (R0-R14)*/
DieterGraef 0:f9b6112278fe 76
DieterGraef 0:f9b6112278fe 77 /* Push the SPSR onto the task stack. */
DieterGraef 0:f9b6112278fe 78 MRS R0, SPSR
DieterGraef 0:f9b6112278fe 79 STMDB LR!, {R0}
DieterGraef 0:f9b6112278fe 80
DieterGraef 0:f9b6112278fe 81 /* Store the new top of stack for the task. */
DieterGraef 0:f9b6112278fe 82 LDR R0,=os_tsk
DieterGraef 0:f9b6112278fe 83 LDR R0, [R0] /* R0 = (tcb) os_tsk.run */
DieterGraef 0:f9b6112278fe 84 STR LR, [R0, TCB_TSTACK] /* tcb.tsk_stack = SP(user) */
DieterGraef 0:f9b6112278fe 85 .endm
DieterGraef 0:f9b6112278fe 86
DieterGraef 0:f9b6112278fe 87 /*-------------------------- Restore Context --------------------------------*/
DieterGraef 0:f9b6112278fe 88 .type RestoreContext, %function
DieterGraef 0:f9b6112278fe 89 .global RestoreContext
DieterGraef 0:f9b6112278fe 90 RestoreContext:
DieterGraef 0:f9b6112278fe 91 .fnstart
DieterGraef 0:f9b6112278fe 92 .cantunwind
DieterGraef 0:f9b6112278fe 93 /* Set the LR to the task stack. */
DieterGraef 0:f9b6112278fe 94 LDR R0,=os_tsk
DieterGraef 0:f9b6112278fe 95 LDR R1, [R0, 4] /* R1 = (tcb) os_tsk.new */
DieterGraef 0:f9b6112278fe 96 STR R1, [R0] /* os_tsk.run = os_tsk_newk */
DieterGraef 0:f9b6112278fe 97 LDR LR, [R1, TCB_TSTACK] /* LR = tcb.tsk_stack */
DieterGraef 0:f9b6112278fe 98
DieterGraef 0:f9b6112278fe 99 /* Get the SPSR from the stack. */
DieterGraef 0:f9b6112278fe 100 LDMFD LR!, {R0} /* SPSR */
DieterGraef 0:f9b6112278fe 101 MSR SPSR, R0
DieterGraef 0:f9b6112278fe 102
DieterGraef 0:f9b6112278fe 103 /* Restore all system mode registers for the task. */
DieterGraef 0:f9b6112278fe 104 LDMFD LR, {R0-R12,LR}^
DieterGraef 0:f9b6112278fe 105 NOP
DieterGraef 0:f9b6112278fe 106
DieterGraef 0:f9b6112278fe 107 ADD LR, LR, 15*4 /* increase stack pointer */
DieterGraef 0:f9b6112278fe 108 /* Set SP(user) to LR */
DieterGraef 0:f9b6112278fe 109 STMDB SP!,{LR}
DieterGraef 0:f9b6112278fe 110 LDMIA SP,{SP}^
DieterGraef 0:f9b6112278fe 111 NOP
DieterGraef 0:f9b6112278fe 112 ADD SP, SP, #4
DieterGraef 0:f9b6112278fe 113
DieterGraef 0:f9b6112278fe 114 /* Restore the return address. */
DieterGraef 0:f9b6112278fe 115 LDR LR, [LR,#-4] /* last dword is task's PC register */
DieterGraef 0:f9b6112278fe 116
DieterGraef 0:f9b6112278fe 117 /* And return - correcting the offset in the LR to obtain the */
DieterGraef 0:f9b6112278fe 118 /* correct address. */
DieterGraef 0:f9b6112278fe 119 SUBS PC, LR, #4
DieterGraef 0:f9b6112278fe 120
DieterGraef 0:f9b6112278fe 121 /*-------------------------- End --------------------------------*/
DieterGraef 0:f9b6112278fe 122 .fnend
DieterGraef 0:f9b6112278fe 123 .size RestoreContext, .-RestoreContext
DieterGraef 0:f9b6112278fe 124
DieterGraef 0:f9b6112278fe 125
DieterGraef 0:f9b6112278fe 126
DieterGraef 0:f9b6112278fe 127 /*--------------------------- rt_set_PSP ------------------------------------*/
DieterGraef 0:f9b6112278fe 128
DieterGraef 0:f9b6112278fe 129 # void rt_set_PSP (U32 stack);
DieterGraef 0:f9b6112278fe 130
DieterGraef 0:f9b6112278fe 131 .type rt_set_PSP, %function
DieterGraef 0:f9b6112278fe 132 .global rt_set_PSP
DieterGraef 0:f9b6112278fe 133 rt_set_PSP:
DieterGraef 0:f9b6112278fe 134 .fnstart
DieterGraef 0:f9b6112278fe 135 .cantunwind
DieterGraef 0:f9b6112278fe 136
DieterGraef 0:f9b6112278fe 137 MOV SP,R0
DieterGraef 0:f9b6112278fe 138 BX LR
DieterGraef 0:f9b6112278fe 139
DieterGraef 0:f9b6112278fe 140 .fnend
DieterGraef 0:f9b6112278fe 141 .size rt_set_PSP, .-rt_set_PSP
DieterGraef 0:f9b6112278fe 142
DieterGraef 0:f9b6112278fe 143
DieterGraef 0:f9b6112278fe 144 /*--------------------------- rt_get_PSP ------------------------------------*/
DieterGraef 0:f9b6112278fe 145
DieterGraef 0:f9b6112278fe 146 # U32 rt_get_PSP (void);
DieterGraef 0:f9b6112278fe 147
DieterGraef 0:f9b6112278fe 148 .type rt_get_PSP, %function
DieterGraef 0:f9b6112278fe 149 .global rt_get_PSP
DieterGraef 0:f9b6112278fe 150 rt_get_PSP:
DieterGraef 0:f9b6112278fe 151 .fnstart
DieterGraef 0:f9b6112278fe 152 .cantunwind
DieterGraef 0:f9b6112278fe 153
DieterGraef 0:f9b6112278fe 154 MOV R0,SP
DieterGraef 0:f9b6112278fe 155 BX LR
DieterGraef 0:f9b6112278fe 156
DieterGraef 0:f9b6112278fe 157 .fnend
DieterGraef 0:f9b6112278fe 158 .size rt_get_PSP, .-rt_get_PSP
DieterGraef 0:f9b6112278fe 159
DieterGraef 0:f9b6112278fe 160
DieterGraef 0:f9b6112278fe 161
DieterGraef 0:f9b6112278fe 162 /*--------------------------- _alloc_box ------------------------------------*/
DieterGraef 0:f9b6112278fe 163
DieterGraef 0:f9b6112278fe 164 # void *_alloc_box (void *box_mem);
DieterGraef 0:f9b6112278fe 165 /* Function wrapper for Unprivileged/Privileged mode. */
DieterGraef 0:f9b6112278fe 166
DieterGraef 0:f9b6112278fe 167 .type _alloc_box, %function
DieterGraef 0:f9b6112278fe 168 .global _alloc_box
DieterGraef 0:f9b6112278fe 169 _alloc_box:
DieterGraef 0:f9b6112278fe 170 .fnstart
DieterGraef 0:f9b6112278fe 171 .cantunwind
DieterGraef 0:f9b6112278fe 172
DieterGraef 0:f9b6112278fe 173 LDR R3,=rt_alloc_box
DieterGraef 0:f9b6112278fe 174 MOV R12, R3
DieterGraef 0:f9b6112278fe 175 MRS R3, CPSR
DieterGraef 0:f9b6112278fe 176 AND R3, 0x1F
DieterGraef 0:f9b6112278fe 177 CMP R3, 0x12 /* IRQ mode*/
DieterGraef 0:f9b6112278fe 178 BNE PrivilegedA
DieterGraef 0:f9b6112278fe 179 CMP R3, 0x1F /* System mode*/
DieterGraef 0:f9b6112278fe 180 BNE PrivilegedA
DieterGraef 0:f9b6112278fe 181 SVC 0
DieterGraef 0:f9b6112278fe 182 BX LR
DieterGraef 0:f9b6112278fe 183 PrivilegedA:
DieterGraef 0:f9b6112278fe 184 BX R12
DieterGraef 0:f9b6112278fe 185
DieterGraef 0:f9b6112278fe 186 .fnend
DieterGraef 0:f9b6112278fe 187 .size _alloc_box, .-_alloc_box
DieterGraef 0:f9b6112278fe 188
DieterGraef 0:f9b6112278fe 189
DieterGraef 0:f9b6112278fe 190 /*--------------------------- _free_box -------------------------------------*/
DieterGraef 0:f9b6112278fe 191
DieterGraef 0:f9b6112278fe 192 # int _free_box (void *box_mem, void *box);
DieterGraef 0:f9b6112278fe 193 /* Function wrapper for Unprivileged/Privileged mode. */
DieterGraef 0:f9b6112278fe 194
DieterGraef 0:f9b6112278fe 195 .type _free_box, %function
DieterGraef 0:f9b6112278fe 196 .global _free_box
DieterGraef 0:f9b6112278fe 197 _free_box:
DieterGraef 0:f9b6112278fe 198 .fnstart
DieterGraef 0:f9b6112278fe 199 .cantunwind
DieterGraef 0:f9b6112278fe 200
DieterGraef 0:f9b6112278fe 201 LDR R3,=rt_free_box
DieterGraef 0:f9b6112278fe 202 MOV R12, R3
DieterGraef 0:f9b6112278fe 203 MRS R3, CPSR
DieterGraef 0:f9b6112278fe 204 AND R3, 0x1F
DieterGraef 0:f9b6112278fe 205 CMP R3, 0x12 /* IRQ mode*/
DieterGraef 0:f9b6112278fe 206 BNE PrivilegedA
DieterGraef 0:f9b6112278fe 207 CMP R3, 0x1F /* System mode*/
DieterGraef 0:f9b6112278fe 208 BNE PrivilegedA
DieterGraef 0:f9b6112278fe 209 SVC 0
DieterGraef 0:f9b6112278fe 210 BX LR
DieterGraef 0:f9b6112278fe 211 PrivilegedF:
DieterGraef 0:f9b6112278fe 212 BX R12
DieterGraef 0:f9b6112278fe 213
DieterGraef 0:f9b6112278fe 214 .fnend
DieterGraef 0:f9b6112278fe 215 .size _free_box, .-_free_box
DieterGraef 0:f9b6112278fe 216
DieterGraef 0:f9b6112278fe 217
DieterGraef 0:f9b6112278fe 218 /*-------------------------- SVC_Handler ------------------------------------*/
DieterGraef 0:f9b6112278fe 219
DieterGraef 0:f9b6112278fe 220 # void SVC_Handler (void);
DieterGraef 0:f9b6112278fe 221
DieterGraef 0:f9b6112278fe 222 .type SVC_Handler, %function
DieterGraef 0:f9b6112278fe 223 .global SVC_Handler
DieterGraef 0:f9b6112278fe 224 SVC_Handler:
DieterGraef 0:f9b6112278fe 225 .fnstart
DieterGraef 0:f9b6112278fe 226 .cantunwind
DieterGraef 0:f9b6112278fe 227 /* Within an IRQ ISR the link register has an offset from the true return
DieterGraef 0:f9b6112278fe 228 address, but an SWI ISR does not. Add the offset manually so the same
DieterGraef 0:f9b6112278fe 229 ISR return code can be used in both cases. */
DieterGraef 0:f9b6112278fe 230
DieterGraef 0:f9b6112278fe 231 STMFD SP!, {R0,LR} /* Store registers. */
DieterGraef 0:f9b6112278fe 232 ADD LR, LR, #4 /* Align LR with IRQ handler */
DieterGraef 0:f9b6112278fe 233 SaveContext
DieterGraef 0:f9b6112278fe 234 MOV R11, LR /* Save Task Stack Pointer */
DieterGraef 0:f9b6112278fe 235 LDMFD SP!, {R0,LR} /* Restore registers and return. */
DieterGraef 0:f9b6112278fe 236 STMFD SP!, {R11} /* Save Task Stack Pointer */
DieterGraef 0:f9b6112278fe 237
DieterGraef 0:f9b6112278fe 238 LDR R5, [LR,#-4] /* Calculate address of SWI instruction and load it into r5. */
DieterGraef 0:f9b6112278fe 239 BIC R5, R5,#0xff000000 /* Mask off top 8 bits of instruction to give SWI number. */
DieterGraef 0:f9b6112278fe 240
DieterGraef 0:f9b6112278fe 241 CMP R5, #0
DieterGraef 0:f9b6112278fe 242 BNE SVC_User /* User SVC Number > 0 */
DieterGraef 0:f9b6112278fe 243 MOV LR, PC /* set LR to return address */
DieterGraef 0:f9b6112278fe 244 BX R12 /* Call SVC Function */
DieterGraef 0:f9b6112278fe 245
DieterGraef 0:f9b6112278fe 246 LDMFD SP!, {R11} /* Load Task Stack Pointer */
DieterGraef 0:f9b6112278fe 247 STMIB R11!, {R0-R3} /* Store return values to Task stack */
DieterGraef 0:f9b6112278fe 248
DieterGraef 0:f9b6112278fe 249 SVC_Exit:
DieterGraef 0:f9b6112278fe 250 B RestoreContext /* return to the task */
DieterGraef 0:f9b6112278fe 251
DieterGraef 0:f9b6112278fe 252 /*------------------- User SVC ------------------------------*/
DieterGraef 0:f9b6112278fe 253
DieterGraef 0:f9b6112278fe 254 SVC_User:
DieterGraef 0:f9b6112278fe 255 LDR R6,=SVC_Count
DieterGraef 0:f9b6112278fe 256 LDR R6,[R6]
DieterGraef 0:f9b6112278fe 257 CMP R5,R6
DieterGraef 0:f9b6112278fe 258 LDMFDHI SP!, {R11}
DieterGraef 0:f9b6112278fe 259 BHI SVC_Done /* Overflow */
DieterGraef 0:f9b6112278fe 260
DieterGraef 0:f9b6112278fe 261 LDR R4,=SVC_Table - 4
DieterGraef 0:f9b6112278fe 262 LSLS R5,R5,#2
DieterGraef 0:f9b6112278fe 263 LDR R4,[R4,R5] /* Load SVC Function Address */
DieterGraef 0:f9b6112278fe 264 /* R0-R3,R12 are unchanged */
DieterGraef 0:f9b6112278fe 265 MOV LR, PC /* set LR to return address */
DieterGraef 0:f9b6112278fe 266 BX R4 /* Call SVC Function */
DieterGraef 0:f9b6112278fe 267
DieterGraef 0:f9b6112278fe 268 LDMFD SP!, {R11} /* Load Task Stack Pointer */
DieterGraef 0:f9b6112278fe 269 BEQ SVC_Exit /* no need in return values */
DieterGraef 0:f9b6112278fe 270
DieterGraef 0:f9b6112278fe 271 STMIB R11!, {R0-R3} /* Store return values to Task stack */
DieterGraef 0:f9b6112278fe 272 SVC_Done:
DieterGraef 0:f9b6112278fe 273 B RestoreContext /* return to the task */
DieterGraef 0:f9b6112278fe 274
DieterGraef 0:f9b6112278fe 275 .fnend
DieterGraef 0:f9b6112278fe 276 .size SVC_Handler, .-SVC_Handler
DieterGraef 0:f9b6112278fe 277
DieterGraef 0:f9b6112278fe 278
DieterGraef 0:f9b6112278fe 279 /*-------------------------- IRQ_Handler ---------------------------------*/
DieterGraef 0:f9b6112278fe 280
DieterGraef 0:f9b6112278fe 281 # void IRQ_Handler (void);
DieterGraef 0:f9b6112278fe 282
DieterGraef 0:f9b6112278fe 283 .type IRQ_Handler, %function
DieterGraef 0:f9b6112278fe 284 .global IRQ_Handler
DieterGraef 0:f9b6112278fe 285 IRQ_Handler:
DieterGraef 0:f9b6112278fe 286 .fnstart
DieterGraef 0:f9b6112278fe 287 .cantunwind
DieterGraef 0:f9b6112278fe 288
DieterGraef 0:f9b6112278fe 289 SaveContext
DieterGraef 0:f9b6112278fe 290
DieterGraef 0:f9b6112278fe 291 MOV R0, #0xFFFFFF00
DieterGraef 0:f9b6112278fe 292 LDR R0, [R0] /* Load address of raised IRQ handler*/
DieterGraef 0:f9b6112278fe 293
DieterGraef 0:f9b6112278fe 294 MOV LR, PC
DieterGraef 0:f9b6112278fe 295 BX R0
DieterGraef 0:f9b6112278fe 296
DieterGraef 0:f9b6112278fe 297 MOV R0, #0xFFFFFF00
DieterGraef 0:f9b6112278fe 298 STR R0, [R0] /* Clear interrupt */
DieterGraef 0:f9b6112278fe 299
DieterGraef 0:f9b6112278fe 300 B RestoreContext
DieterGraef 0:f9b6112278fe 301
DieterGraef 0:f9b6112278fe 302 .fnend
DieterGraef 0:f9b6112278fe 303 .size IRQ_Handler, .-IRQ_Handler
DieterGraef 0:f9b6112278fe 304
DieterGraef 0:f9b6112278fe 305 /*-------------------------- SysTick_Handler --------------------------------*/
DieterGraef 0:f9b6112278fe 306
DieterGraef 0:f9b6112278fe 307 # void SysTick_Handler (void);
DieterGraef 0:f9b6112278fe 308
DieterGraef 0:f9b6112278fe 309 .type SysTick_Handler, %function
DieterGraef 0:f9b6112278fe 310 .global SysTick_Handler
DieterGraef 0:f9b6112278fe 311 SysTick_Handler:
DieterGraef 0:f9b6112278fe 312 .fnstart
DieterGraef 0:f9b6112278fe 313 .cantunwind
DieterGraef 0:f9b6112278fe 314
DieterGraef 0:f9b6112278fe 315 PUSH {LR}
DieterGraef 0:f9b6112278fe 316 BL rt_systick
DieterGraef 0:f9b6112278fe 317 POP {LR}
DieterGraef 0:f9b6112278fe 318 BX LR /* return to IRQ handler */
DieterGraef 0:f9b6112278fe 319
DieterGraef 0:f9b6112278fe 320 /*-------------------------- End --------------------------------*/
DieterGraef 0:f9b6112278fe 321 .fnend
DieterGraef 0:f9b6112278fe 322 .size SysTick_Handler, .-SysTick_Handler
DieterGraef 0:f9b6112278fe 323
DieterGraef 0:f9b6112278fe 324
DieterGraef 0:f9b6112278fe 325 /*----------------------------------------------------------------------------
DieterGraef 0:f9b6112278fe 326 * end of file
DieterGraef 0:f9b6112278fe 327 *---------------------------------------------------------------------------*/
DieterGraef 0:f9b6112278fe 328
DieterGraef 0:f9b6112278fe 329 .end