lzbp li / mbed-src

mbed library sources

Fork of mbed-src by mbed official

targets/cmsis/TARGET_NXP/TARGET_LPC11XX_11CXX/TOOLCHAIN_GCC_ARM/startup_LPC11xx.S@636:b0d178e9fa10, 2016-07-07 (annotated)

Committer:
lzbpli
Date:
Thu Jul 07 06:48:59 2016 +0000
Revision:
636:b0d178e9fa10
Parent:
577:15494b56c2f3 
l053

Who changed what in which revision?

UserRevisionLine numberNew contents of line
mbed_official 30:91c1d09ada54 1 /* File: startup_ARMCM0.S
mbed_official 30:91c1d09ada54 2 * Purpose: startup file for Cortex-M0 devices. Should use with
mbed_official 30:91c1d09ada54 3 * GCC for ARM Embedded Processors
mbed_official 30:91c1d09ada54 4 * Version: V1.2
mbed_official 30:91c1d09ada54 5 * Date: 15 Nov 2011
mbed_official 30:91c1d09ada54 6 *
mbed_official 30:91c1d09ada54 7 * Copyright (c) 2011, ARM Limited
mbed_official 30:91c1d09ada54 8 * All rights reserved.
mbed_official 30:91c1d09ada54 9 *
mbed_official 30:91c1d09ada54 10 * Redistribution and use in source and binary forms, with or without
mbed_official 30:91c1d09ada54 11 * modification, are permitted provided that the following conditions are met:
mbed_official 30:91c1d09ada54 12 * Redistributions of source code must retain the above copyright
mbed_official 30:91c1d09ada54 13 notice, this list of conditions and the following disclaimer.
mbed_official 30:91c1d09ada54 14 * Redistributions in binary form must reproduce the above copyright
mbed_official 30:91c1d09ada54 15 notice, this list of conditions and the following disclaimer in the
mbed_official 30:91c1d09ada54 16 documentation and/or other materials provided with the distribution.
mbed_official 30:91c1d09ada54 17 * Neither the name of the ARM Limited nor the
mbed_official 30:91c1d09ada54 18 names of its contributors may be used to endorse or promote products
mbed_official 30:91c1d09ada54 19 derived from this software without specific prior written permission.
mbed_official 30:91c1d09ada54 20 *
mbed_official 30:91c1d09ada54 21 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
mbed_official 30:91c1d09ada54 22 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
mbed_official 30:91c1d09ada54 23 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
mbed_official 30:91c1d09ada54 24 * DISCLAIMED. IN NO EVENT SHALL ARM LIMITED BE LIABLE FOR ANY
mbed_official 30:91c1d09ada54 25 * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
mbed_official 30:91c1d09ada54 26 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
mbed_official 30:91c1d09ada54 27 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
mbed_official 30:91c1d09ada54 28 * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
mbed_official 30:91c1d09ada54 29 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
mbed_official 30:91c1d09ada54 30 * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
mbed_official 30:91c1d09ada54 31 */
mbed_official 30:91c1d09ada54 32 .syntax unified
mbed_official 30:91c1d09ada54 33 .arch armv6-m
mbed_official 30:91c1d09ada54 34
mbed_official 30:91c1d09ada54 35 /* Memory Model
mbed_official 30:91c1d09ada54 36 The HEAP starts at the end of the DATA section and grows upward.
mbed_official 30:91c1d09ada54 37
mbed_official 30:91c1d09ada54 38 The STACK starts at the end of the RAM and grows downward.
mbed_official 30:91c1d09ada54 39
mbed_official 30:91c1d09ada54 40 The HEAP and stack STACK are only checked at compile time:
mbed_official 30:91c1d09ada54 41 (DATA_SIZE + HEAP_SIZE + STACK_SIZE) < RAM_SIZE
mbed_official 30:91c1d09ada54 42
mbed_official 30:91c1d09ada54 43 This is just a check for the bare minimum for the Heap+Stack area before
mbed_official 30:91c1d09ada54 44 aborting compilation, it is not the run time limit:
mbed_official 30:91c1d09ada54 45 Heap_Size + Stack_Size = 0x80 + 0x80 = 0x100
mbed_official 30:91c1d09ada54 46 */
mbed_official 30:91c1d09ada54 47 .section .stack
mbed_official 30:91c1d09ada54 48 .align 3
mbed_official 30:91c1d09ada54 49 #ifdef __STACK_SIZE
mbed_official 30:91c1d09ada54 50 .equ Stack_Size, __STACK_SIZE
mbed_official 30:91c1d09ada54 51 #else
mbed_official 30:91c1d09ada54 52 .equ Stack_Size, 0x80
mbed_official 30:91c1d09ada54 53 #endif
mbed_official 30:91c1d09ada54 54 .globl __StackTop
mbed_official 30:91c1d09ada54 55 .globl __StackLimit
mbed_official 30:91c1d09ada54 56 __StackLimit:
mbed_official 30:91c1d09ada54 57 .space Stack_Size
mbed_official 30:91c1d09ada54 58 .size __StackLimit, . - __StackLimit
mbed_official 30:91c1d09ada54 59 __StackTop:
mbed_official 30:91c1d09ada54 60 .size __StackTop, . - __StackTop
mbed_official 30:91c1d09ada54 61
mbed_official 30:91c1d09ada54 62 .section .heap
mbed_official 30:91c1d09ada54 63 .align 3
mbed_official 30:91c1d09ada54 64 #ifdef __HEAP_SIZE
mbed_official 30:91c1d09ada54 65 .equ Heap_Size, __HEAP_SIZE
mbed_official 30:91c1d09ada54 66 #else
mbed_official 30:91c1d09ada54 67 .equ Heap_Size, 0x80
mbed_official 30:91c1d09ada54 68 #endif
mbed_official 30:91c1d09ada54 69 .globl __HeapBase
mbed_official 30:91c1d09ada54 70 .globl __HeapLimit
mbed_official 30:91c1d09ada54 71 __HeapBase:
mbed_official 30:91c1d09ada54 72 .space Heap_Size
mbed_official 30:91c1d09ada54 73 .size __HeapBase, . - __HeapBase
mbed_official 30:91c1d09ada54 74 __HeapLimit:
mbed_official 30:91c1d09ada54 75 .size __HeapLimit, . - __HeapLimit
mbed_official 30:91c1d09ada54 76
mbed_official 30:91c1d09ada54 77 .section .isr_vector
mbed_official 30:91c1d09ada54 78 .align 2
mbed_official 30:91c1d09ada54 79 .globl __isr_vector
mbed_official 30:91c1d09ada54 80 __isr_vector:
mbed_official 30:91c1d09ada54 81 .long __StackTop /* Top of Stack */
mbed_official 30:91c1d09ada54 82 .long Reset_Handler /* Reset Handler */
mbed_official 30:91c1d09ada54 83 .long NMI_Handler /* NMI Handler */
mbed_official 30:91c1d09ada54 84 .long HardFault_Handler /* Hard Fault Handler */
mbed_official 30:91c1d09ada54 85 .long 0 /* Reserved */
mbed_official 30:91c1d09ada54 86 .long 0 /* Reserved */
mbed_official 30:91c1d09ada54 87 .long 0 /* Reserved */
mbed_official 30:91c1d09ada54 88 .long 0 /* Reserved */
mbed_official 30:91c1d09ada54 89 .long 0 /* Reserved */
mbed_official 30:91c1d09ada54 90 .long 0 /* Reserved */
mbed_official 30:91c1d09ada54 91 .long 0 /* Reserved */
mbed_official 30:91c1d09ada54 92 .long SVC_Handler /* SVCall Handler */
mbed_official 30:91c1d09ada54 93 .long 0 /* Reserved */
mbed_official 30:91c1d09ada54 94 .long 0 /* Reserved */
mbed_official 30:91c1d09ada54 95 .long PendSV_Handler /* PendSV Handler */
mbed_official 30:91c1d09ada54 96 .long SysTick_Handler /* SysTick Handler */
mbed_official 30:91c1d09ada54 97
mbed_official 30:91c1d09ada54 98 /* LPC11xx interrupts */
mbed_official 30:91c1d09ada54 99 .long WAKEUP_IRQHandler /* 16 0 Wake-up on pin PIO0_0 */
mbed_official 30:91c1d09ada54 100 .long WAKEUP_IRQHandler /* 17 1 Wake-up on pin PIO0_1 */
mbed_official 30:91c1d09ada54 101 .long WAKEUP_IRQHandler /* 18 2 Wake-up on pin PIO0_2 */
mbed_official 30:91c1d09ada54 102 .long WAKEUP_IRQHandler /* 19 3 Wake-up on pin PIO0_3 */
mbed_official 30:91c1d09ada54 103 .long WAKEUP_IRQHandler /* 20 4 Wake-up on pin PIO0_4 */
mbed_official 30:91c1d09ada54 104 .long WAKEUP_IRQHandler /* 21 5 Wake-up on pin PIO0_5 */
mbed_official 30:91c1d09ada54 105 .long WAKEUP_IRQHandler /* 22 6 Wake-up on pin PIO0_6 */
mbed_official 30:91c1d09ada54 106 .long WAKEUP_IRQHandler /* 23 7 Wake-up on pin PIO0_7 */
mbed_official 30:91c1d09ada54 107 .long WAKEUP_IRQHandler /* 24 8 Wake-up on pin PIO0_8 */
mbed_official 30:91c1d09ada54 108 .long WAKEUP_IRQHandler /* 25 9 Wake-up on pin PIO0_9 */
mbed_official 30:91c1d09ada54 109 .long WAKEUP_IRQHandler /* 26 10 Wake-up on pin PIO0_10 */
mbed_official 30:91c1d09ada54 110 .long WAKEUP_IRQHandler /* 27 11 Wake-up on pin PIO0_11 */
mbed_official 30:91c1d09ada54 111 .long WAKEUP_IRQHandler /* 28 12 Wake-up on pin PIO1_0 */
mbed_official 30:91c1d09ada54 112 .long Default_Handler /* 29 13 */
mbed_official 30:91c1d09ada54 113 .long SSP1_IRQHandler /* 30 14 SSP1 */
mbed_official 30:91c1d09ada54 114 .long I2C_IRQHandler /* 31 15 I2C0 SI (state change) */
mbed_official 30:91c1d09ada54 115 .long TIMER16_0_IRQHandler /* 32 16 CT16B0 16 bit timer 0 */
mbed_official 30:91c1d09ada54 116 .long TIMER16_1_IRQHandler /* 33 17 CT16B1 16 bit timer 1 */
mbed_official 30:91c1d09ada54 117 .long TIMER32_0_IRQHandler /* 34 18 CT32B0 32 bit timer 0 */
mbed_official 30:91c1d09ada54 118 .long TIMER32_1_IRQHandler /* 35 19 CT32B1 32 bit timer 1 */
mbed_official 30:91c1d09ada54 119 .long SSP0_IRQHandler /* 36 20 SSP */
mbed_official 30:91c1d09ada54 120 .long UART_IRQHandler /* 37 21 UART */
mbed_official 30:91c1d09ada54 121 .long Default_Handler /* 38 22 */
mbed_official 30:91c1d09ada54 122 .long Default_Handler /* 39 23 */
mbed_official 30:91c1d09ada54 123 .long ADC_IRQHandler /* 40 24 ADC end of conversion */
mbed_official 30:91c1d09ada54 124 .long WDT_IRQHandler /* 41 25 Watchdog interrupt (WDINT) */
mbed_official 30:91c1d09ada54 125 .long BOD_IRQHandler /* 42 26 BOD Brown-out detect */
mbed_official 30:91c1d09ada54 126 .long Default_Handler /* 43 27 */
mbed_official 30:91c1d09ada54 127 .long PIOINT3_IRQHandler /* 44 28 PIO_3 GPIO interrupt status of port 3 */
mbed_official 30:91c1d09ada54 128 .long PIOINT2_IRQHandler /* 45 29 PIO_2 GPIO interrupt status of port 2 */
mbed_official 30:91c1d09ada54 129 .long PIOINT1_IRQHandler /* 46 30 PIO_1 GPIO interrupt status of port 1 */
mbed_official 30:91c1d09ada54 130 .long PIOINT0_IRQHandler /* 47 31 PIO_0 GPIO interrupt status of port 0 */
mbed_official 30:91c1d09ada54 131
mbed_official 30:91c1d09ada54 132 .size __isr_vector, . - __isr_vector
mbed_official 30:91c1d09ada54 133
mbed_official 30:91c1d09ada54 134 .section .text.Reset_Handler
mbed_official 30:91c1d09ada54 135 .thumb
mbed_official 30:91c1d09ada54 136 .thumb_func
mbed_official 30:91c1d09ada54 137 .align 2
mbed_official 30:91c1d09ada54 138 .globl Reset_Handler
mbed_official 30:91c1d09ada54 139 .type Reset_Handler, %function
mbed_official 30:91c1d09ada54 140 Reset_Handler:
mbed_official 30:91c1d09ada54 141 /* Loop to copy data from read only memory to RAM. The ranges
mbed_official 30:91c1d09ada54 142 * of copy from/to are specified by following symbols evaluated in
mbed_official 30:91c1d09ada54 143 * linker script.
mbed_official 30:91c1d09ada54 144 * __etext: End of code section, i.e., begin of data sections to copy from.
mbed_official 30:91c1d09ada54 145 * __data_start__/__data_end__: RAM address range that data should be
mbed_official 30:91c1d09ada54 146 * copied to. Both must be aligned to 4 bytes boundary. */
mbed_official 30:91c1d09ada54 147
mbed_official 30:91c1d09ada54 148 ldr r1, =__etext
mbed_official 30:91c1d09ada54 149 ldr r2, =__data_start__
mbed_official 30:91c1d09ada54 150 ldr r3, =__data_end__
mbed_official 30:91c1d09ada54 151
mbed_official 30:91c1d09ada54 152 subs r3, r2
mbed_official 66:64ad953ee6c3 153 ble .Lflash_to_ram_loop_end
mbed_official 30:91c1d09ada54 154
mbed_official 30:91c1d09ada54 155 movs r4, 0
mbed_official 66:64ad953ee6c3 156 .Lflash_to_ram_loop:
mbed_official 30:91c1d09ada54 157 ldr r0, [r1,r4]
mbed_official 30:91c1d09ada54 158 str r0, [r2,r4]
mbed_official 30:91c1d09ada54 159 adds r4, 4
mbed_official 30:91c1d09ada54 160 cmp r4, r3
mbed_official 66:64ad953ee6c3 161 blt .Lflash_to_ram_loop
mbed_official 66:64ad953ee6c3 162 .Lflash_to_ram_loop_end:
mbed_official 30:91c1d09ada54 163
mbed_official 30:91c1d09ada54 164 ldr r0, =SystemInit
mbed_official 30:91c1d09ada54 165 blx r0
mbed_official 30:91c1d09ada54 166 ldr r0, =_start
mbed_official 30:91c1d09ada54 167 bx r0
mbed_official 30:91c1d09ada54 168 .pool
mbed_official 30:91c1d09ada54 169 .size Reset_Handler, . - Reset_Handler
mbed_official 30:91c1d09ada54 170
mbed_official 30:91c1d09ada54 171 .text
mbed_official 30:91c1d09ada54 172 /* Macro to define default handlers. Default handler
mbed_official 30:91c1d09ada54 173 * will be weak symbol and just dead loops. They can be
mbed_official 30:91c1d09ada54 174 * overwritten by other handlers */
mbed_official 30:91c1d09ada54 175 .macro def_default_handler handler_name
mbed_official 30:91c1d09ada54 176 .align 1
mbed_official 30:91c1d09ada54 177 .thumb_func
mbed_official 30:91c1d09ada54 178 .weak \handler_name
mbed_official 30:91c1d09ada54 179 .type \handler_name, %function
mbed_official 30:91c1d09ada54 180 \handler_name :
mbed_official 30:91c1d09ada54 181 b .
mbed_official 30:91c1d09ada54 182 .size \handler_name, . - \handler_name
mbed_official 30:91c1d09ada54 183 .endm
mbed_official 66:64ad953ee6c3 184
mbed_official 66:64ad953ee6c3 185 def_default_handler NMI_Handler
mbed_official 66:64ad953ee6c3 186 def_default_handler HardFault_Handler
mbed_official 66:64ad953ee6c3 187 def_default_handler SVC_Handler
mbed_official 66:64ad953ee6c3 188 def_default_handler PendSV_Handler
mbed_official 66:64ad953ee6c3 189 def_default_handler SysTick_Handler
mbed_official 66:64ad953ee6c3 190 def_default_handler Default_Handler
mbed_official 66:64ad953ee6c3 191
mbed_official 66:64ad953ee6c3 192 .macro def_irq_default_handler handler_name
mbed_official 66:64ad953ee6c3 193 .weak \handler_name
mbed_official 66:64ad953ee6c3 194 .set \handler_name, Default_Handler
mbed_official 66:64ad953ee6c3 195 .endm
mbed_official 30:91c1d09ada54 196
mbed_official 66:64ad953ee6c3 197 def_irq_default_handler WAKEUP_IRQHandler
mbed_official 66:64ad953ee6c3 198 def_irq_default_handler SSP1_IRQHandler
mbed_official 66:64ad953ee6c3 199 def_irq_default_handler I2C_IRQHandler
mbed_official 66:64ad953ee6c3 200 def_irq_default_handler TIMER16_0_IRQHandler
mbed_official 66:64ad953ee6c3 201 def_irq_default_handler TIMER16_1_IRQHandler
mbed_official 66:64ad953ee6c3 202 def_irq_default_handler TIMER32_0_IRQHandler
mbed_official 66:64ad953ee6c3 203 def_irq_default_handler TIMER32_1_IRQHandler
mbed_official 66:64ad953ee6c3 204 def_irq_default_handler SSP0_IRQHandler
mbed_official 66:64ad953ee6c3 205 def_irq_default_handler UART_IRQHandler
mbed_official 66:64ad953ee6c3 206 def_irq_default_handler ADC_IRQHandler
mbed_official 66:64ad953ee6c3 207 def_irq_default_handler WDT_IRQHandler
mbed_official 66:64ad953ee6c3 208 def_irq_default_handler BOD_IRQHandler
mbed_official 66:64ad953ee6c3 209 def_irq_default_handler PIOINT3_IRQHandler
mbed_official 66:64ad953ee6c3 210 def_irq_default_handler PIOINT2_IRQHandler
mbed_official 66:64ad953ee6c3 211 def_irq_default_handler PIOINT1_IRQHandler
mbed_official 66:64ad953ee6c3 212 def_irq_default_handler PIOINT0_IRQHandler
mbed_official 66:64ad953ee6c3 213 def_irq_default_handler DEF_IRQHandler
mbed_official 30:91c1d09ada54 214
mbed_official 30:91c1d09ada54 215 .end
mbed_official 30:91c1d09ada54 216