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mbed client lightswitch demo
Dependencies: mbed Socket lwip-eth lwip-sys lwip
Fork of mbed-client-classic-example-lwip by
mbed-rtos/rtx/TARGET_CORTEX_M/TARGET_RTOS_M4_M7/TOOLCHAIN_GCC/HAL_CM4.S@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?
User | Revision | Line number | New 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.S |
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 | .file "HAL_CM4.S" |
mbedAustin | 11:cada08fc8a70 | 36 | .syntax unified |
mbedAustin | 11:cada08fc8a70 | 37 | |
mbedAustin | 11:cada08fc8a70 | 38 | .equ TCB_STACKF, 32 |
mbedAustin | 11:cada08fc8a70 | 39 | .equ TCB_TSTACK, 40 |
mbedAustin | 11:cada08fc8a70 | 40 | |
mbedAustin | 11:cada08fc8a70 | 41 | |
mbedAustin | 11:cada08fc8a70 | 42 | /*---------------------------------------------------------------------------- |
mbedAustin | 11:cada08fc8a70 | 43 | * Functions |
mbedAustin | 11:cada08fc8a70 | 44 | *---------------------------------------------------------------------------*/ |
mbedAustin | 11:cada08fc8a70 | 45 | |
mbedAustin | 11:cada08fc8a70 | 46 | .thumb |
mbedAustin | 11:cada08fc8a70 | 47 | |
mbedAustin | 11:cada08fc8a70 | 48 | .section ".text" |
mbedAustin | 11:cada08fc8a70 | 49 | .align 2 |
mbedAustin | 11:cada08fc8a70 | 50 | |
mbedAustin | 11:cada08fc8a70 | 51 | |
mbedAustin | 11:cada08fc8a70 | 52 | /*--------------------------- rt_set_PSP ------------------------------------*/ |
mbedAustin | 11:cada08fc8a70 | 53 | |
mbedAustin | 11:cada08fc8a70 | 54 | # void rt_set_PSP (U32 stack); |
mbedAustin | 11:cada08fc8a70 | 55 | |
mbedAustin | 11:cada08fc8a70 | 56 | .thumb_func |
mbedAustin | 11:cada08fc8a70 | 57 | .type rt_set_PSP, %function |
mbedAustin | 11:cada08fc8a70 | 58 | .global rt_set_PSP |
mbedAustin | 11:cada08fc8a70 | 59 | rt_set_PSP: |
mbedAustin | 11:cada08fc8a70 | 60 | .fnstart |
mbedAustin | 11:cada08fc8a70 | 61 | .cantunwind |
mbedAustin | 11:cada08fc8a70 | 62 | |
mbedAustin | 11:cada08fc8a70 | 63 | MSR PSP,R0 |
mbedAustin | 11:cada08fc8a70 | 64 | BX LR |
mbedAustin | 11:cada08fc8a70 | 65 | |
mbedAustin | 11:cada08fc8a70 | 66 | .fnend |
mbedAustin | 11:cada08fc8a70 | 67 | .size rt_set_PSP, .-rt_set_PSP |
mbedAustin | 11:cada08fc8a70 | 68 | |
mbedAustin | 11:cada08fc8a70 | 69 | |
mbedAustin | 11:cada08fc8a70 | 70 | /*--------------------------- rt_get_PSP ------------------------------------*/ |
mbedAustin | 11:cada08fc8a70 | 71 | |
mbedAustin | 11:cada08fc8a70 | 72 | # U32 rt_get_PSP (void); |
mbedAustin | 11:cada08fc8a70 | 73 | |
mbedAustin | 11:cada08fc8a70 | 74 | .thumb_func |
mbedAustin | 11:cada08fc8a70 | 75 | .type rt_get_PSP, %function |
mbedAustin | 11:cada08fc8a70 | 76 | .global rt_get_PSP |
mbedAustin | 11:cada08fc8a70 | 77 | rt_get_PSP: |
mbedAustin | 11:cada08fc8a70 | 78 | .fnstart |
mbedAustin | 11:cada08fc8a70 | 79 | .cantunwind |
mbedAustin | 11:cada08fc8a70 | 80 | |
mbedAustin | 11:cada08fc8a70 | 81 | MRS R0,PSP |
mbedAustin | 11:cada08fc8a70 | 82 | BX LR |
mbedAustin | 11:cada08fc8a70 | 83 | |
mbedAustin | 11:cada08fc8a70 | 84 | .fnend |
mbedAustin | 11:cada08fc8a70 | 85 | .size rt_get_PSP, .-rt_get_PSP |
mbedAustin | 11:cada08fc8a70 | 86 | |
mbedAustin | 11:cada08fc8a70 | 87 | |
mbedAustin | 11:cada08fc8a70 | 88 | /*--------------------------- os_set_env ------------------------------------*/ |
mbedAustin | 11:cada08fc8a70 | 89 | |
mbedAustin | 11:cada08fc8a70 | 90 | # void os_set_env (void); |
mbedAustin | 11:cada08fc8a70 | 91 | /* Switch to Unprivileged/Privileged Thread mode, use PSP. */ |
mbedAustin | 11:cada08fc8a70 | 92 | |
mbedAustin | 11:cada08fc8a70 | 93 | .thumb_func |
mbedAustin | 11:cada08fc8a70 | 94 | .type os_set_env, %function |
mbedAustin | 11:cada08fc8a70 | 95 | .global os_set_env |
mbedAustin | 11:cada08fc8a70 | 96 | os_set_env: |
mbedAustin | 11:cada08fc8a70 | 97 | .fnstart |
mbedAustin | 11:cada08fc8a70 | 98 | .cantunwind |
mbedAustin | 11:cada08fc8a70 | 99 | |
mbedAustin | 11:cada08fc8a70 | 100 | MOV R0,SP /* PSP = MSP */ |
mbedAustin | 11:cada08fc8a70 | 101 | MSR PSP,R0 |
mbedAustin | 11:cada08fc8a70 | 102 | LDR R0,=os_flags |
mbedAustin | 11:cada08fc8a70 | 103 | LDRB R0,[R0] |
mbedAustin | 11:cada08fc8a70 | 104 | LSLS R0,#31 |
mbedAustin | 11:cada08fc8a70 | 105 | ITE NE |
mbedAustin | 11:cada08fc8a70 | 106 | MOVNE R0,#0x02 /* Privileged Thread mode, use PSP */ |
mbedAustin | 11:cada08fc8a70 | 107 | MOVEQ R0,#0x03 /* Unprivileged Thread mode, use PSP */ |
mbedAustin | 11:cada08fc8a70 | 108 | MSR CONTROL,R0 |
mbedAustin | 11:cada08fc8a70 | 109 | BX LR |
mbedAustin | 11:cada08fc8a70 | 110 | |
mbedAustin | 11:cada08fc8a70 | 111 | .fnend |
mbedAustin | 11:cada08fc8a70 | 112 | .size os_set_env, .-os_set_env |
mbedAustin | 11:cada08fc8a70 | 113 | |
mbedAustin | 11:cada08fc8a70 | 114 | |
mbedAustin | 11:cada08fc8a70 | 115 | /*--------------------------- _alloc_box ------------------------------------*/ |
mbedAustin | 11:cada08fc8a70 | 116 | |
mbedAustin | 11:cada08fc8a70 | 117 | # void *_alloc_box (void *box_mem); |
mbedAustin | 11:cada08fc8a70 | 118 | /* Function wrapper for Unprivileged/Privileged mode. */ |
mbedAustin | 11:cada08fc8a70 | 119 | |
mbedAustin | 11:cada08fc8a70 | 120 | .thumb_func |
mbedAustin | 11:cada08fc8a70 | 121 | .type _alloc_box, %function |
mbedAustin | 11:cada08fc8a70 | 122 | .global _alloc_box |
mbedAustin | 11:cada08fc8a70 | 123 | _alloc_box: |
mbedAustin | 11:cada08fc8a70 | 124 | .fnstart |
mbedAustin | 11:cada08fc8a70 | 125 | .cantunwind |
mbedAustin | 11:cada08fc8a70 | 126 | |
mbedAustin | 11:cada08fc8a70 | 127 | LDR R12,=rt_alloc_box |
mbedAustin | 11:cada08fc8a70 | 128 | MRS R3,IPSR |
mbedAustin | 11:cada08fc8a70 | 129 | LSLS R3,#24 |
mbedAustin | 11:cada08fc8a70 | 130 | IT NE |
mbedAustin | 11:cada08fc8a70 | 131 | BXNE R12 |
mbedAustin | 11:cada08fc8a70 | 132 | MRS R3,CONTROL |
mbedAustin | 11:cada08fc8a70 | 133 | LSLS R3,#31 |
mbedAustin | 11:cada08fc8a70 | 134 | IT EQ |
mbedAustin | 11:cada08fc8a70 | 135 | BXEQ R12 |
mbedAustin | 11:cada08fc8a70 | 136 | SVC 0 |
mbedAustin | 11:cada08fc8a70 | 137 | BX LR |
mbedAustin | 11:cada08fc8a70 | 138 | |
mbedAustin | 11:cada08fc8a70 | 139 | .fnend |
mbedAustin | 11:cada08fc8a70 | 140 | .size _alloc_box, .-_alloc_box |
mbedAustin | 11:cada08fc8a70 | 141 | |
mbedAustin | 11:cada08fc8a70 | 142 | |
mbedAustin | 11:cada08fc8a70 | 143 | /*--------------------------- _free_box -------------------------------------*/ |
mbedAustin | 11:cada08fc8a70 | 144 | |
mbedAustin | 11:cada08fc8a70 | 145 | # int _free_box (void *box_mem, void *box); |
mbedAustin | 11:cada08fc8a70 | 146 | /* Function wrapper for Unprivileged/Privileged mode. */ |
mbedAustin | 11:cada08fc8a70 | 147 | |
mbedAustin | 11:cada08fc8a70 | 148 | .thumb_func |
mbedAustin | 11:cada08fc8a70 | 149 | .type _free_box, %function |
mbedAustin | 11:cada08fc8a70 | 150 | .global _free_box |
mbedAustin | 11:cada08fc8a70 | 151 | _free_box: |
mbedAustin | 11:cada08fc8a70 | 152 | .fnstart |
mbedAustin | 11:cada08fc8a70 | 153 | .cantunwind |
mbedAustin | 11:cada08fc8a70 | 154 | |
mbedAustin | 11:cada08fc8a70 | 155 | LDR R12,=rt_free_box |
mbedAustin | 11:cada08fc8a70 | 156 | MRS R3,IPSR |
mbedAustin | 11:cada08fc8a70 | 157 | LSLS R3,#24 |
mbedAustin | 11:cada08fc8a70 | 158 | IT NE |
mbedAustin | 11:cada08fc8a70 | 159 | BXNE R12 |
mbedAustin | 11:cada08fc8a70 | 160 | MRS R3,CONTROL |
mbedAustin | 11:cada08fc8a70 | 161 | LSLS R3,#31 |
mbedAustin | 11:cada08fc8a70 | 162 | IT EQ |
mbedAustin | 11:cada08fc8a70 | 163 | BXEQ R12 |
mbedAustin | 11:cada08fc8a70 | 164 | SVC 0 |
mbedAustin | 11:cada08fc8a70 | 165 | BX LR |
mbedAustin | 11:cada08fc8a70 | 166 | |
mbedAustin | 11:cada08fc8a70 | 167 | .fnend |
mbedAustin | 11:cada08fc8a70 | 168 | .size _free_box, .-_free_box |
mbedAustin | 11:cada08fc8a70 | 169 | |
mbedAustin | 11:cada08fc8a70 | 170 | |
mbedAustin | 11:cada08fc8a70 | 171 | /*-------------------------- SVC_Handler ------------------------------------*/ |
mbedAustin | 11:cada08fc8a70 | 172 | |
mbedAustin | 11:cada08fc8a70 | 173 | # void SVC_Handler (void); |
mbedAustin | 11:cada08fc8a70 | 174 | |
mbedAustin | 11:cada08fc8a70 | 175 | .thumb_func |
mbedAustin | 11:cada08fc8a70 | 176 | .type SVC_Handler, %function |
mbedAustin | 11:cada08fc8a70 | 177 | .global SVC_Handler |
mbedAustin | 11:cada08fc8a70 | 178 | SVC_Handler: |
mbedAustin | 11:cada08fc8a70 | 179 | .ifdef IFX_XMC4XXX |
mbedAustin | 11:cada08fc8a70 | 180 | .global SVC_Handler_Veneer |
mbedAustin | 11:cada08fc8a70 | 181 | SVC_Handler_Veneer: |
mbedAustin | 11:cada08fc8a70 | 182 | .endif |
mbedAustin | 11:cada08fc8a70 | 183 | .fnstart |
mbedAustin | 11:cada08fc8a70 | 184 | .cantunwind |
mbedAustin | 11:cada08fc8a70 | 185 | |
mbedAustin | 11:cada08fc8a70 | 186 | MRS R0,PSP /* Read PSP */ |
mbedAustin | 11:cada08fc8a70 | 187 | LDR R1,[R0,#24] /* Read Saved PC from Stack */ |
mbedAustin | 11:cada08fc8a70 | 188 | LDRB R1,[R1,#-2] /* Load SVC Number */ |
mbedAustin | 11:cada08fc8a70 | 189 | CBNZ R1,SVC_User |
mbedAustin | 11:cada08fc8a70 | 190 | |
mbedAustin | 11:cada08fc8a70 | 191 | LDM R0,{R0-R3,R12} /* Read R0-R3,R12 from stack */ |
mbedAustin | 11:cada08fc8a70 | 192 | PUSH {R4,LR} /* Save EXC_RETURN */ |
mbedAustin | 11:cada08fc8a70 | 193 | BLX R12 /* Call SVC Function */ |
mbedAustin | 11:cada08fc8a70 | 194 | POP {R4,LR} /* Restore EXC_RETURN */ |
mbedAustin | 11:cada08fc8a70 | 195 | |
mbedAustin | 11:cada08fc8a70 | 196 | MRS R12,PSP /* Read PSP */ |
mbedAustin | 11:cada08fc8a70 | 197 | STM R12,{R0-R2} /* Store return values */ |
mbedAustin | 11:cada08fc8a70 | 198 | |
mbedAustin | 11:cada08fc8a70 | 199 | LDR R3,=os_tsk |
mbedAustin | 11:cada08fc8a70 | 200 | LDM R3,{R1,R2} /* os_tsk.run, os_tsk.new */ |
mbedAustin | 11:cada08fc8a70 | 201 | CMP R1,R2 |
mbedAustin | 11:cada08fc8a70 | 202 | .ifdef IFX_XMC4XXX |
mbedAustin | 11:cada08fc8a70 | 203 | ITT EQ |
mbedAustin | 11:cada08fc8a70 | 204 | PUSHEQ {LR} |
mbedAustin | 11:cada08fc8a70 | 205 | POPEQ {PC} |
mbedAustin | 11:cada08fc8a70 | 206 | .else |
mbedAustin | 11:cada08fc8a70 | 207 | IT EQ |
mbedAustin | 11:cada08fc8a70 | 208 | BXEQ LR /* RETI, no task switch */ |
mbedAustin | 11:cada08fc8a70 | 209 | .endif |
mbedAustin | 11:cada08fc8a70 | 210 | |
mbedAustin | 11:cada08fc8a70 | 211 | CBZ R1,SVC_Next /* Runtask deleted? */ |
mbedAustin | 11:cada08fc8a70 | 212 | TST LR,#0x10 /* is it extended frame? */ |
mbedAustin | 11:cada08fc8a70 | 213 | #ifdef __FPU_PRESENT |
mbedAustin | 11:cada08fc8a70 | 214 | ITTE EQ |
mbedAustin | 11:cada08fc8a70 | 215 | VSTMDBEQ R12!,{S16-S31} /* yes, stack also VFP hi-regs */ |
mbedAustin | 11:cada08fc8a70 | 216 | #else |
mbedAustin | 11:cada08fc8a70 | 217 | ITE EQ |
mbedAustin | 11:cada08fc8a70 | 218 | #endif |
mbedAustin | 11:cada08fc8a70 | 219 | MOVEQ R0,#0x01 /* os_tsk->stack_frame val */ |
mbedAustin | 11:cada08fc8a70 | 220 | MOVNE R0,#0x00 |
mbedAustin | 11:cada08fc8a70 | 221 | STRB R0,[R1,#TCB_STACKF] /* os_tsk.run->stack_frame = val */ |
mbedAustin | 11:cada08fc8a70 | 222 | STMDB R12!,{R4-R11} /* Save Old context */ |
mbedAustin | 11:cada08fc8a70 | 223 | STR R12,[R1,#TCB_TSTACK] /* Update os_tsk.run->tsk_stack */ |
mbedAustin | 11:cada08fc8a70 | 224 | |
mbedAustin | 11:cada08fc8a70 | 225 | PUSH {R2,R3} |
mbedAustin | 11:cada08fc8a70 | 226 | BL rt_stk_check /* Check for Stack overflow */ |
mbedAustin | 11:cada08fc8a70 | 227 | POP {R2,R3} |
mbedAustin | 11:cada08fc8a70 | 228 | |
mbedAustin | 11:cada08fc8a70 | 229 | SVC_Next: |
mbedAustin | 11:cada08fc8a70 | 230 | STR R2,[R3] /* os_tsk.run = os_tsk.new */ |
mbedAustin | 11:cada08fc8a70 | 231 | |
mbedAustin | 11:cada08fc8a70 | 232 | LDR R12,[R2,#TCB_TSTACK] /* os_tsk.new->tsk_stack */ |
mbedAustin | 11:cada08fc8a70 | 233 | LDMIA R12!,{R4-R11} /* Restore New Context */ |
mbedAustin | 11:cada08fc8a70 | 234 | LDRB R0,[R2,#TCB_STACKF] /* Stack Frame */ |
mbedAustin | 11:cada08fc8a70 | 235 | CMP R0,#0 /* Basic/Extended Stack Frame */ |
mbedAustin | 11:cada08fc8a70 | 236 | #ifdef __FPU_PRESENT |
mbedAustin | 11:cada08fc8a70 | 237 | ITTE NE |
mbedAustin | 11:cada08fc8a70 | 238 | VLDMIANE R12!,{S16-S31} /* restore VFP hi-registers */ |
mbedAustin | 11:cada08fc8a70 | 239 | #else |
mbedAustin | 11:cada08fc8a70 | 240 | ITE NE |
mbedAustin | 11:cada08fc8a70 | 241 | #endif |
mbedAustin | 11:cada08fc8a70 | 242 | MVNNE LR,#~0xFFFFFFED /* set EXC_RETURN value */ |
mbedAustin | 11:cada08fc8a70 | 243 | MVNEQ LR,#~0xFFFFFFFD |
mbedAustin | 11:cada08fc8a70 | 244 | MSR PSP,R12 /* Write PSP */ |
mbedAustin | 11:cada08fc8a70 | 245 | |
mbedAustin | 11:cada08fc8a70 | 246 | SVC_Exit: |
mbedAustin | 11:cada08fc8a70 | 247 | .ifdef IFX_XMC4XXX |
mbedAustin | 11:cada08fc8a70 | 248 | PUSH {LR} |
mbedAustin | 11:cada08fc8a70 | 249 | POP {PC} |
mbedAustin | 11:cada08fc8a70 | 250 | .else |
mbedAustin | 11:cada08fc8a70 | 251 | BX LR |
mbedAustin | 11:cada08fc8a70 | 252 | .endif |
mbedAustin | 11:cada08fc8a70 | 253 | |
mbedAustin | 11:cada08fc8a70 | 254 | /*------------------- User SVC ------------------------------*/ |
mbedAustin | 11:cada08fc8a70 | 255 | |
mbedAustin | 11:cada08fc8a70 | 256 | SVC_User: |
mbedAustin | 11:cada08fc8a70 | 257 | PUSH {R4,LR} /* Save Registers */ |
mbedAustin | 11:cada08fc8a70 | 258 | LDR R2,=SVC_Count |
mbedAustin | 11:cada08fc8a70 | 259 | LDR R2,[R2] |
mbedAustin | 11:cada08fc8a70 | 260 | CMP R1,R2 |
mbedAustin | 11:cada08fc8a70 | 261 | BHI SVC_Done /* Overflow */ |
mbedAustin | 11:cada08fc8a70 | 262 | |
mbedAustin | 11:cada08fc8a70 | 263 | LDR R4,=SVC_Table-4 |
mbedAustin | 11:cada08fc8a70 | 264 | LDR R4,[R4,R1,LSL #2] /* Load SVC Function Address */ |
mbedAustin | 11:cada08fc8a70 | 265 | |
mbedAustin | 11:cada08fc8a70 | 266 | LDM R0,{R0-R3,R12} /* Read R0-R3,R12 from stack */ |
mbedAustin | 11:cada08fc8a70 | 267 | BLX R4 /* Call SVC Function */ |
mbedAustin | 11:cada08fc8a70 | 268 | |
mbedAustin | 11:cada08fc8a70 | 269 | MRS R12,PSP |
mbedAustin | 11:cada08fc8a70 | 270 | STM R12,{R0-R3} /* Function return values */ |
mbedAustin | 11:cada08fc8a70 | 271 | SVC_Done: |
mbedAustin | 11:cada08fc8a70 | 272 | POP {R4,PC} /* RETI */ |
mbedAustin | 11:cada08fc8a70 | 273 | |
mbedAustin | 11:cada08fc8a70 | 274 | .fnend |
mbedAustin | 11:cada08fc8a70 | 275 | .size SVC_Handler, .-SVC_Handler |
mbedAustin | 11:cada08fc8a70 | 276 | |
mbedAustin | 11:cada08fc8a70 | 277 | |
mbedAustin | 11:cada08fc8a70 | 278 | /*-------------------------- PendSV_Handler ---------------------------------*/ |
mbedAustin | 11:cada08fc8a70 | 279 | |
mbedAustin | 11:cada08fc8a70 | 280 | # void PendSV_Handler (void); |
mbedAustin | 11:cada08fc8a70 | 281 | |
mbedAustin | 11:cada08fc8a70 | 282 | .thumb_func |
mbedAustin | 11:cada08fc8a70 | 283 | .type PendSV_Handler, %function |
mbedAustin | 11:cada08fc8a70 | 284 | .global PendSV_Handler |
mbedAustin | 11:cada08fc8a70 | 285 | .global Sys_Switch |
mbedAustin | 11:cada08fc8a70 | 286 | PendSV_Handler: |
mbedAustin | 11:cada08fc8a70 | 287 | .ifdef IFX_XMC4XXX |
mbedAustin | 11:cada08fc8a70 | 288 | .global PendSV_Handler_Veneer |
mbedAustin | 11:cada08fc8a70 | 289 | PendSV_Handler_Veneer: |
mbedAustin | 11:cada08fc8a70 | 290 | .endif |
mbedAustin | 11:cada08fc8a70 | 291 | .fnstart |
mbedAustin | 11:cada08fc8a70 | 292 | .cantunwind |
mbedAustin | 11:cada08fc8a70 | 293 | |
mbedAustin | 11:cada08fc8a70 | 294 | PUSH {R4,LR} /* Save EXC_RETURN */ |
mbedAustin | 11:cada08fc8a70 | 295 | BL rt_pop_req |
mbedAustin | 11:cada08fc8a70 | 296 | |
mbedAustin | 11:cada08fc8a70 | 297 | Sys_Switch: |
mbedAustin | 11:cada08fc8a70 | 298 | POP {R4,LR} /* Restore EXC_RETURN */ |
mbedAustin | 11:cada08fc8a70 | 299 | |
mbedAustin | 11:cada08fc8a70 | 300 | LDR R3,=os_tsk |
mbedAustin | 11:cada08fc8a70 | 301 | LDM R3,{R1,R2} /* os_tsk.run, os_tsk.new */ |
mbedAustin | 11:cada08fc8a70 | 302 | CMP R1,R2 |
mbedAustin | 11:cada08fc8a70 | 303 | .ifdef IFX_XMC4XXX |
mbedAustin | 11:cada08fc8a70 | 304 | ITT EQ |
mbedAustin | 11:cada08fc8a70 | 305 | PUSHEQ {LR} |
mbedAustin | 11:cada08fc8a70 | 306 | POPEQ {PC} |
mbedAustin | 11:cada08fc8a70 | 307 | .else |
mbedAustin | 11:cada08fc8a70 | 308 | IT EQ |
mbedAustin | 11:cada08fc8a70 | 309 | BXEQ LR /* RETI, no task switch */ |
mbedAustin | 11:cada08fc8a70 | 310 | .endif |
mbedAustin | 11:cada08fc8a70 | 311 | |
mbedAustin | 11:cada08fc8a70 | 312 | MRS R12,PSP /* Read PSP */ |
mbedAustin | 11:cada08fc8a70 | 313 | TST LR,#0x10 /* is it extended frame? */ |
mbedAustin | 11:cada08fc8a70 | 314 | #ifdef __FPU_PRESENT |
mbedAustin | 11:cada08fc8a70 | 315 | ITTE EQ |
mbedAustin | 11:cada08fc8a70 | 316 | VSTMDBEQ R12!,{S16-S31} /* yes, stack also VFP hi-regs */ |
mbedAustin | 11:cada08fc8a70 | 317 | #else |
mbedAustin | 11:cada08fc8a70 | 318 | ITE EQ |
mbedAustin | 11:cada08fc8a70 | 319 | #endif |
mbedAustin | 11:cada08fc8a70 | 320 | MOVEQ R0,#0x01 /* os_tsk->stack_frame val */ |
mbedAustin | 11:cada08fc8a70 | 321 | MOVNE R0,#0x00 |
mbedAustin | 11:cada08fc8a70 | 322 | STRB R0,[R1,#TCB_STACKF] /* os_tsk.run->stack_frame = val */ |
mbedAustin | 11:cada08fc8a70 | 323 | STMDB R12!,{R4-R11} /* Save Old context */ |
mbedAustin | 11:cada08fc8a70 | 324 | STR R12,[R1,#TCB_TSTACK] /* Update os_tsk.run->tsk_stack */ |
mbedAustin | 11:cada08fc8a70 | 325 | |
mbedAustin | 11:cada08fc8a70 | 326 | PUSH {R2,R3} |
mbedAustin | 11:cada08fc8a70 | 327 | BL rt_stk_check /* Check for Stack overflow */ |
mbedAustin | 11:cada08fc8a70 | 328 | POP {R2,R3} |
mbedAustin | 11:cada08fc8a70 | 329 | |
mbedAustin | 11:cada08fc8a70 | 330 | STR R2,[R3] /* os_tsk.run = os_tsk.new */ |
mbedAustin | 11:cada08fc8a70 | 331 | |
mbedAustin | 11:cada08fc8a70 | 332 | LDR R12,[R2,#TCB_TSTACK] /* os_tsk.new->tsk_stack */ |
mbedAustin | 11:cada08fc8a70 | 333 | LDMIA R12!,{R4-R11} /* Restore New Context */ |
mbedAustin | 11:cada08fc8a70 | 334 | LDRB R0,[R2,#TCB_STACKF] /* Stack Frame */ |
mbedAustin | 11:cada08fc8a70 | 335 | CMP R0,#0 /* Basic/Extended Stack Frame */ |
mbedAustin | 11:cada08fc8a70 | 336 | #ifdef __FPU_PRESENT |
mbedAustin | 11:cada08fc8a70 | 337 | ITTE NE |
mbedAustin | 11:cada08fc8a70 | 338 | VLDMIANE R12!,{S16-S31} /* restore VFP hi-registers */ |
mbedAustin | 11:cada08fc8a70 | 339 | #else |
mbedAustin | 11:cada08fc8a70 | 340 | ITE NE |
mbedAustin | 11:cada08fc8a70 | 341 | #endif |
mbedAustin | 11:cada08fc8a70 | 342 | MVNNE LR,#~0xFFFFFFED /* set EXC_RETURN value */ |
mbedAustin | 11:cada08fc8a70 | 343 | MVNEQ LR,#~0xFFFFFFFD |
mbedAustin | 11:cada08fc8a70 | 344 | MSR PSP,R12 /* Write PSP */ |
mbedAustin | 11:cada08fc8a70 | 345 | |
mbedAustin | 11:cada08fc8a70 | 346 | Sys_Exit: |
mbedAustin | 11:cada08fc8a70 | 347 | .ifdef IFX_XMC4XXX |
mbedAustin | 11:cada08fc8a70 | 348 | PUSH {LR} |
mbedAustin | 11:cada08fc8a70 | 349 | POP {PC} |
mbedAustin | 11:cada08fc8a70 | 350 | .else |
mbedAustin | 11:cada08fc8a70 | 351 | BX LR /* Return to Thread Mode */ |
mbedAustin | 11:cada08fc8a70 | 352 | .endif |
mbedAustin | 11:cada08fc8a70 | 353 | |
mbedAustin | 11:cada08fc8a70 | 354 | .fnend |
mbedAustin | 11:cada08fc8a70 | 355 | .size PendSV_Handler, .-PendSV_Handler |
mbedAustin | 11:cada08fc8a70 | 356 | |
mbedAustin | 11:cada08fc8a70 | 357 | |
mbedAustin | 11:cada08fc8a70 | 358 | /*-------------------------- SysTick_Handler --------------------------------*/ |
mbedAustin | 11:cada08fc8a70 | 359 | |
mbedAustin | 11:cada08fc8a70 | 360 | # void SysTick_Handler (void); |
mbedAustin | 11:cada08fc8a70 | 361 | |
mbedAustin | 11:cada08fc8a70 | 362 | .thumb_func |
mbedAustin | 11:cada08fc8a70 | 363 | .type SysTick_Handler, %function |
mbedAustin | 11:cada08fc8a70 | 364 | .global SysTick_Handler |
mbedAustin | 11:cada08fc8a70 | 365 | SysTick_Handler: |
mbedAustin | 11:cada08fc8a70 | 366 | .ifdef IFX_XMC4XXX |
mbedAustin | 11:cada08fc8a70 | 367 | .global SysTick_Handler_Veneer |
mbedAustin | 11:cada08fc8a70 | 368 | SysTick_Handler_Veneer: |
mbedAustin | 11:cada08fc8a70 | 369 | .endif |
mbedAustin | 11:cada08fc8a70 | 370 | .fnstart |
mbedAustin | 11:cada08fc8a70 | 371 | .cantunwind |
mbedAustin | 11:cada08fc8a70 | 372 | |
mbedAustin | 11:cada08fc8a70 | 373 | PUSH {R4,LR} /* Save EXC_RETURN */ |
mbedAustin | 11:cada08fc8a70 | 374 | BL rt_systick |
mbedAustin | 11:cada08fc8a70 | 375 | B Sys_Switch |
mbedAustin | 11:cada08fc8a70 | 376 | |
mbedAustin | 11:cada08fc8a70 | 377 | .fnend |
mbedAustin | 11:cada08fc8a70 | 378 | .size SysTick_Handler, .-SysTick_Handler |
mbedAustin | 11:cada08fc8a70 | 379 | |
mbedAustin | 11:cada08fc8a70 | 380 | |
mbedAustin | 11:cada08fc8a70 | 381 | /*-------------------------- OS_Tick_Handler --------------------------------*/ |
mbedAustin | 11:cada08fc8a70 | 382 | |
mbedAustin | 11:cada08fc8a70 | 383 | # void OS_Tick_Handler (void); |
mbedAustin | 11:cada08fc8a70 | 384 | |
mbedAustin | 11:cada08fc8a70 | 385 | .thumb_func |
mbedAustin | 11:cada08fc8a70 | 386 | .type OS_Tick_Handler, %function |
mbedAustin | 11:cada08fc8a70 | 387 | .global OS_Tick_Handler |
mbedAustin | 11:cada08fc8a70 | 388 | OS_Tick_Handler: |
mbedAustin | 11:cada08fc8a70 | 389 | .fnstart |
mbedAustin | 11:cada08fc8a70 | 390 | .cantunwind |
mbedAustin | 11:cada08fc8a70 | 391 | |
mbedAustin | 11:cada08fc8a70 | 392 | PUSH {R4,LR} /* Save EXC_RETURN */ |
mbedAustin | 11:cada08fc8a70 | 393 | BL os_tick_irqack |
mbedAustin | 11:cada08fc8a70 | 394 | BL rt_systick |
mbedAustin | 11:cada08fc8a70 | 395 | B Sys_Switch |
mbedAustin | 11:cada08fc8a70 | 396 | |
mbedAustin | 11:cada08fc8a70 | 397 | .fnend |
mbedAustin | 11:cada08fc8a70 | 398 | .size OS_Tick_Handler, .-OS_Tick_Handler |
mbedAustin | 11:cada08fc8a70 | 399 | |
mbedAustin | 11:cada08fc8a70 | 400 | |
mbedAustin | 11:cada08fc8a70 | 401 | .end |
mbedAustin | 11:cada08fc8a70 | 402 | |
mbedAustin | 11:cada08fc8a70 | 403 | /*---------------------------------------------------------------------------- |
mbedAustin | 11:cada08fc8a70 | 404 | * end of file |
mbedAustin | 11:cada08fc8a70 | 405 | *---------------------------------------------------------------------------*/ |