Kojo / mbed-rtos-initial-thread-larger-stack

Important changes to repositories hosted on mbed.com

Mbed hosted mercurial repositories are deprecated and are due to be permanently deleted in July 2026.

To keep a copy of this software download the repository Zip archive or clone locally using Mercurial.

It is also possible to export all your personal repositories from the account settings page.

Fork of mbed-rtos by mbed official

rtx/TARGET_CORTEX_M/TARGET_M3/TOOLCHAIN_IAR/HAL_CM3.s@55:91d99cc6ef5d, 2014-12-03 (annotated)

Committer:
takashikojo
Date:
Wed Dec 03 05:30:36 2014 +0000
Revision:
55:91d99cc6ef5d
Parent:
53:c35dab33c427 
Expanded main thread stack size

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 53:c35dab33c427 18 * - Neither the name of ARM nor the names of its contributors may be used
mbed_official 53:c35dab33c427 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 53:c35dab33c427 22 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
mbed_official 53:c35dab33c427 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 53:c35dab33c427 27 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
mbed_official 53:c35dab33c427 28 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
mbed_official 53:c35dab33c427 29 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
mbed_official 53:c35dab33c427 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 53:c35dab33c427 37 #define TCB_TSTACK 36
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 53:c35dab33c427 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 *---------------------------------------------------------------------------*/