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Last commit 20 Feb 2019 by mbed official

targets/cmsis/TARGET_NXP/TARGET_LPC176X/TOOLCHAIN_GCC_ARM/startup_LPC17xx.s@66:64ad953ee6c3, 2013-12-20 (annotated)

Committer:
mbed_official
Date:
Fri Dec 20 15:00:06 2013 +0000
Revision:
66:64ad953ee6c3
Parent:
13:0645d8841f51 
Synchronized with git revision 728084c52fd7c4375f6b2ca2bb13c697e47dc39c



Full URL: https://github.com/mbedmicro/mbed/commit/728084c52fd7c4375f6b2ca2bb13c697e47dc39c/



Clean up GCC_ARM startup code

Who changed what in which revision?

UserRevisionLine numberNew contents of line
emilmont 10:3bc89ef62ce7 1 /* File: startup_ARMCM3.s
emilmont 10:3bc89ef62ce7 2 * Purpose: startup file for Cortex-M3/M4 devices. Should use with
emilmont 10:3bc89ef62ce7 3 * GNU Tools for ARM Embedded Processors
emilmont 10:3bc89ef62ce7 4 * Version: V1.1
emilmont 10:3bc89ef62ce7 5 * Date: 17 June 2011
emilmont 10:3bc89ef62ce7 6 *
emilmont 10:3bc89ef62ce7 7 * Copyright (C) 2011 ARM Limited. All rights reserved.
emilmont 10:3bc89ef62ce7 8 * ARM Limited (ARM) is supplying this software for use with Cortex-M3/M4
emilmont 10:3bc89ef62ce7 9 * processor based microcontrollers. This file can be freely distributed
emilmont 10:3bc89ef62ce7 10 * within development tools that are supporting such ARM based processors.
emilmont 10:3bc89ef62ce7 11 *
emilmont 10:3bc89ef62ce7 12 * THIS SOFTWARE IS PROVIDED "AS IS". NO WARRANTIES, WHETHER EXPRESS, IMPLIED
emilmont 10:3bc89ef62ce7 13 * OR STATUTORY, INCLUDING, BUT NOT LIMITED TO, IMPLIED WARRANTIES OF
emilmont 10:3bc89ef62ce7 14 * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE APPLY TO THIS SOFTWARE.
emilmont 10:3bc89ef62ce7 15 * ARM SHALL NOT, IN ANY CIRCUMSTANCES, BE LIABLE FOR SPECIAL, INCIDENTAL, OR
emilmont 10:3bc89ef62ce7 16 * CONSEQUENTIAL DAMAGES, FOR ANY REASON WHATSOEVER.
emilmont 10:3bc89ef62ce7 17 */
emilmont 10:3bc89ef62ce7 18 .syntax unified
emilmont 10:3bc89ef62ce7 19 .arch armv7-m
emilmont 10:3bc89ef62ce7 20
emilmont 10:3bc89ef62ce7 21 /* Memory Model
emilmont 10:3bc89ef62ce7 22 The HEAP starts at the end of the DATA section and grows upward.
emilmont 10:3bc89ef62ce7 23
emilmont 10:3bc89ef62ce7 24 The STACK starts at the end of the RAM and grows downward.
emilmont 10:3bc89ef62ce7 25
emilmont 10:3bc89ef62ce7 26 The HEAP and stack STACK are only checked at compile time:
emilmont 10:3bc89ef62ce7 27 (DATA_SIZE + HEAP_SIZE + STACK_SIZE) < RAM_SIZE
emilmont 10:3bc89ef62ce7 28
emilmont 10:3bc89ef62ce7 29 This is just a check for the bare minimum for the Heap+Stack area before
emilmont 10:3bc89ef62ce7 30 aborting compilation, it is not the run time limit:
emilmont 10:3bc89ef62ce7 31 Heap_Size + Stack_Size = 0x80 + 0x80 = 0x100
emilmont 10:3bc89ef62ce7 32 */
emilmont 10:3bc89ef62ce7 33 .section .stack
emilmont 10:3bc89ef62ce7 34 .align 3
emilmont 10:3bc89ef62ce7 35 #ifdef __STACK_SIZE
emilmont 10:3bc89ef62ce7 36 .equ Stack_Size, __STACK_SIZE
emilmont 10:3bc89ef62ce7 37 #else
emilmont 10:3bc89ef62ce7 38 .equ Stack_Size, 0xc00
emilmont 10:3bc89ef62ce7 39 #endif
emilmont 10:3bc89ef62ce7 40 .globl __StackTop
emilmont 10:3bc89ef62ce7 41 .globl __StackLimit
emilmont 10:3bc89ef62ce7 42 __StackLimit:
emilmont 10:3bc89ef62ce7 43 .space Stack_Size
emilmont 10:3bc89ef62ce7 44 .size __StackLimit, . - __StackLimit
emilmont 10:3bc89ef62ce7 45 __StackTop:
emilmont 10:3bc89ef62ce7 46 .size __StackTop, . - __StackTop
emilmont 10:3bc89ef62ce7 47
emilmont 10:3bc89ef62ce7 48 .section .heap
emilmont 10:3bc89ef62ce7 49 .align 3
emilmont 10:3bc89ef62ce7 50 #ifdef __HEAP_SIZE
emilmont 10:3bc89ef62ce7 51 .equ Heap_Size, __HEAP_SIZE
emilmont 10:3bc89ef62ce7 52 #else
emilmont 10:3bc89ef62ce7 53 .equ Heap_Size, 0x800
emilmont 10:3bc89ef62ce7 54 #endif
emilmont 10:3bc89ef62ce7 55 .globl __HeapBase
emilmont 10:3bc89ef62ce7 56 .globl __HeapLimit
emilmont 10:3bc89ef62ce7 57 __HeapBase:
emilmont 10:3bc89ef62ce7 58 .space Heap_Size
emilmont 10:3bc89ef62ce7 59 .size __HeapBase, . - __HeapBase
emilmont 10:3bc89ef62ce7 60 __HeapLimit:
emilmont 10:3bc89ef62ce7 61 .size __HeapLimit, . - __HeapLimit
emilmont 10:3bc89ef62ce7 62
emilmont 10:3bc89ef62ce7 63 .section .isr_vector
emilmont 10:3bc89ef62ce7 64 .align 2
emilmont 10:3bc89ef62ce7 65 .globl __isr_vector
emilmont 10:3bc89ef62ce7 66 __isr_vector:
emilmont 10:3bc89ef62ce7 67 .long __StackTop /* Top of Stack */
emilmont 10:3bc89ef62ce7 68 .long Reset_Handler /* Reset Handler */
emilmont 10:3bc89ef62ce7 69 .long NMI_Handler /* NMI Handler */
emilmont 10:3bc89ef62ce7 70 .long HardFault_Handler /* Hard Fault Handler */
emilmont 10:3bc89ef62ce7 71 .long MemManage_Handler /* MPU Fault Handler */
emilmont 10:3bc89ef62ce7 72 .long BusFault_Handler /* Bus Fault Handler */
emilmont 10:3bc89ef62ce7 73 .long UsageFault_Handler /* Usage Fault Handler */
emilmont 10:3bc89ef62ce7 74 .long 0 /* Reserved */
emilmont 10:3bc89ef62ce7 75 .long 0 /* Reserved */
emilmont 10:3bc89ef62ce7 76 .long 0 /* Reserved */
emilmont 10:3bc89ef62ce7 77 .long 0 /* Reserved */
emilmont 10:3bc89ef62ce7 78 .long SVC_Handler /* SVCall Handler */
emilmont 10:3bc89ef62ce7 79 .long DebugMon_Handler /* Debug Monitor Handler */
emilmont 10:3bc89ef62ce7 80 .long 0 /* Reserved */
emilmont 10:3bc89ef62ce7 81 .long PendSV_Handler /* PendSV Handler */
emilmont 10:3bc89ef62ce7 82 .long SysTick_Handler /* SysTick Handler */
emilmont 10:3bc89ef62ce7 83
emilmont 10:3bc89ef62ce7 84 /* External interrupts */
emilmont 10:3bc89ef62ce7 85 .long WDT_IRQHandler /* 16: Watchdog Timer */
emilmont 10:3bc89ef62ce7 86 .long TIMER0_IRQHandler /* 17: Timer0 */
emilmont 10:3bc89ef62ce7 87 .long TIMER1_IRQHandler /* 18: Timer1 */
emilmont 10:3bc89ef62ce7 88 .long TIMER2_IRQHandler /* 19: Timer2 */
emilmont 10:3bc89ef62ce7 89 .long TIMER3_IRQHandler /* 20: Timer3 */
emilmont 10:3bc89ef62ce7 90 .long UART0_IRQHandler /* 21: UART0 */
emilmont 10:3bc89ef62ce7 91 .long UART1_IRQHandler /* 22: UART1 */
emilmont 10:3bc89ef62ce7 92 .long UART2_IRQHandler /* 23: UART2 */
emilmont 10:3bc89ef62ce7 93 .long UART3_IRQHandler /* 24: UART3 */
emilmont 10:3bc89ef62ce7 94 .long PWM1_IRQHandler /* 25: PWM1 */
emilmont 10:3bc89ef62ce7 95 .long I2C0_IRQHandler /* 26: I2C0 */
emilmont 10:3bc89ef62ce7 96 .long I2C1_IRQHandler /* 27: I2C1 */
emilmont 10:3bc89ef62ce7 97 .long I2C2_IRQHandler /* 28: I2C2 */
emilmont 10:3bc89ef62ce7 98 .long SPI_IRQHandler /* 29: SPI */
emilmont 10:3bc89ef62ce7 99 .long SSP0_IRQHandler /* 30: SSP0 */
emilmont 10:3bc89ef62ce7 100 .long SSP1_IRQHandler /* 31: SSP1 */
emilmont 10:3bc89ef62ce7 101 .long PLL0_IRQHandler /* 32: PLL0 Lock (Main PLL) */
emilmont 10:3bc89ef62ce7 102 .long RTC_IRQHandler /* 33: Real Time Clock */
emilmont 10:3bc89ef62ce7 103 .long EINT0_IRQHandler /* 34: External Interrupt 0 */
emilmont 10:3bc89ef62ce7 104 .long EINT1_IRQHandler /* 35: External Interrupt 1 */
emilmont 10:3bc89ef62ce7 105 .long EINT2_IRQHandler /* 36: External Interrupt 2 */
emilmont 10:3bc89ef62ce7 106 .long EINT3_IRQHandler /* 37: External Interrupt 3 */
emilmont 10:3bc89ef62ce7 107 .long ADC_IRQHandler /* 38: A/D Converter */
emilmont 10:3bc89ef62ce7 108 .long BOD_IRQHandler /* 39: Brown-Out Detect */
emilmont 10:3bc89ef62ce7 109 .long USB_IRQHandler /* 40: USB */
emilmont 10:3bc89ef62ce7 110 .long CAN_IRQHandler /* 41: CAN */
emilmont 10:3bc89ef62ce7 111 .long DMA_IRQHandler /* 42: General Purpose DMA */
emilmont 10:3bc89ef62ce7 112 .long I2S_IRQHandler /* 43: I2S */
emilmont 10:3bc89ef62ce7 113 .long ENET_IRQHandler /* 44: Ethernet */
emilmont 10:3bc89ef62ce7 114 .long RIT_IRQHandler /* 45: Repetitive Interrupt Timer */
emilmont 10:3bc89ef62ce7 115 .long MCPWM_IRQHandler /* 46: Motor Control PWM */
emilmont 10:3bc89ef62ce7 116 .long QEI_IRQHandler /* 47: Quadrature Encoder Interface */
emilmont 10:3bc89ef62ce7 117 .long PLL1_IRQHandler /* 48: PLL1 Lock (USB PLL) */
emilmont 10:3bc89ef62ce7 118 .long USBActivity_IRQHandler /* 49: USB Activity */
emilmont 10:3bc89ef62ce7 119 .long CANActivity_IRQHandler /* 50: CAN Activity */
emilmont 10:3bc89ef62ce7 120
emilmont 10:3bc89ef62ce7 121 .size __isr_vector, . - __isr_vector
emilmont 10:3bc89ef62ce7 122
emilmont 10:3bc89ef62ce7 123 .text
emilmont 10:3bc89ef62ce7 124 .thumb
emilmont 10:3bc89ef62ce7 125 .thumb_func
emilmont 10:3bc89ef62ce7 126 .align 2
emilmont 10:3bc89ef62ce7 127 .globl Reset_Handler
emilmont 10:3bc89ef62ce7 128 .type Reset_Handler, %function
emilmont 10:3bc89ef62ce7 129 Reset_Handler:
emilmont 10:3bc89ef62ce7 130 /* Loop to copy data from read only memory to RAM. The ranges
emilmont 10:3bc89ef62ce7 131 * of copy from/to are specified by following symbols evaluated in
emilmont 10:3bc89ef62ce7 132 * linker script.
emilmont 10:3bc89ef62ce7 133 * _etext: End of code section, i.e., begin of data sections to copy from.
emilmont 10:3bc89ef62ce7 134 * __data_start__/__data_end__: RAM address range that data should be
emilmont 10:3bc89ef62ce7 135 * copied to. Both must be aligned to 4 bytes boundary. */
emilmont 10:3bc89ef62ce7 136
emilmont 10:3bc89ef62ce7 137 ldr r1, =__etext
emilmont 10:3bc89ef62ce7 138 ldr r2, =__data_start__
emilmont 10:3bc89ef62ce7 139 ldr r3, =__data_end__
emilmont 10:3bc89ef62ce7 140
mbed_official 66:64ad953ee6c3 141 .Lflash_to_ram_loop:
emilmont 10:3bc89ef62ce7 142 cmp r2, r3
emilmont 10:3bc89ef62ce7 143 ittt lt
emilmont 10:3bc89ef62ce7 144 ldrlt r0, [r1], #4
emilmont 10:3bc89ef62ce7 145 strlt r0, [r2], #4
mbed_official 66:64ad953ee6c3 146 blt .Lflash_to_ram_loop
emilmont 10:3bc89ef62ce7 147
emilmont 10:3bc89ef62ce7 148 ldr r0, =SystemInit
emilmont 10:3bc89ef62ce7 149 blx r0
emilmont 10:3bc89ef62ce7 150 ldr r0, =_start
emilmont 10:3bc89ef62ce7 151 bx r0
emilmont 10:3bc89ef62ce7 152 .pool
emilmont 10:3bc89ef62ce7 153 .size Reset_Handler, . - Reset_Handler
emilmont 10:3bc89ef62ce7 154
mbed_official 66:64ad953ee6c3 155 .text
emilmont 10:3bc89ef62ce7 156 /* Macro to define default handlers. Default handler
emilmont 10:3bc89ef62ce7 157 * will be weak symbol and just dead loops. They can be
emilmont 10:3bc89ef62ce7 158 * overwritten by other handlers */
emilmont 10:3bc89ef62ce7 159 .macro def_default_handler handler_name
emilmont 10:3bc89ef62ce7 160 .align 1
emilmont 10:3bc89ef62ce7 161 .thumb_func
emilmont 10:3bc89ef62ce7 162 .weak \handler_name
emilmont 10:3bc89ef62ce7 163 .type \handler_name, %function
emilmont 10:3bc89ef62ce7 164 \handler_name :
emilmont 10:3bc89ef62ce7 165 b .
emilmont 10:3bc89ef62ce7 166 .size \handler_name, . - \handler_name
emilmont 10:3bc89ef62ce7 167 .endm
mbed_official 66:64ad953ee6c3 168
emilmont 10:3bc89ef62ce7 169 def_default_handler NMI_Handler
emilmont 10:3bc89ef62ce7 170 def_default_handler HardFault_Handler
emilmont 10:3bc89ef62ce7 171 def_default_handler MemManage_Handler
emilmont 10:3bc89ef62ce7 172 def_default_handler BusFault_Handler
emilmont 10:3bc89ef62ce7 173 def_default_handler UsageFault_Handler
emilmont 10:3bc89ef62ce7 174 def_default_handler SVC_Handler
emilmont 10:3bc89ef62ce7 175 def_default_handler DebugMon_Handler
emilmont 10:3bc89ef62ce7 176 def_default_handler PendSV_Handler
emilmont 10:3bc89ef62ce7 177 def_default_handler SysTick_Handler
emilmont 10:3bc89ef62ce7 178 def_default_handler Default_Handler
emilmont 10:3bc89ef62ce7 179
mbed_official 66:64ad953ee6c3 180 .macro def_irq_default_handler handler_name
mbed_official 66:64ad953ee6c3 181 .weak \handler_name
mbed_official 66:64ad953ee6c3 182 .set \handler_name, Default_Handler
mbed_official 66:64ad953ee6c3 183 .endm
mbed_official 66:64ad953ee6c3 184
mbed_official 66:64ad953ee6c3 185 def_irq_default_handler WDT_IRQHandler
mbed_official 66:64ad953ee6c3 186 def_irq_default_handler TIMER0_IRQHandler
mbed_official 66:64ad953ee6c3 187 def_irq_default_handler TIMER1_IRQHandler
mbed_official 66:64ad953ee6c3 188 def_irq_default_handler TIMER2_IRQHandler
mbed_official 66:64ad953ee6c3 189 def_irq_default_handler TIMER3_IRQHandler
mbed_official 66:64ad953ee6c3 190 def_irq_default_handler UART0_IRQHandler
mbed_official 66:64ad953ee6c3 191 def_irq_default_handler UART1_IRQHandler
mbed_official 66:64ad953ee6c3 192 def_irq_default_handler UART2_IRQHandler
mbed_official 66:64ad953ee6c3 193 def_irq_default_handler UART3_IRQHandler
mbed_official 66:64ad953ee6c3 194 def_irq_default_handler PWM1_IRQHandler
mbed_official 66:64ad953ee6c3 195 def_irq_default_handler I2C0_IRQHandler
mbed_official 66:64ad953ee6c3 196 def_irq_default_handler I2C1_IRQHandler
mbed_official 66:64ad953ee6c3 197 def_irq_default_handler I2C2_IRQHandler
mbed_official 66:64ad953ee6c3 198 def_irq_default_handler SPI_IRQHandler
mbed_official 66:64ad953ee6c3 199 def_irq_default_handler SSP0_IRQHandler
mbed_official 66:64ad953ee6c3 200 def_irq_default_handler SSP1_IRQHandler
mbed_official 66:64ad953ee6c3 201 def_irq_default_handler PLL0_IRQHandler
mbed_official 66:64ad953ee6c3 202 def_irq_default_handler RTC_IRQHandler
mbed_official 66:64ad953ee6c3 203 def_irq_default_handler EINT0_IRQHandler
mbed_official 66:64ad953ee6c3 204 def_irq_default_handler EINT1_IRQHandler
mbed_official 66:64ad953ee6c3 205 def_irq_default_handler EINT2_IRQHandler
mbed_official 66:64ad953ee6c3 206 def_irq_default_handler EINT3_IRQHandler
mbed_official 66:64ad953ee6c3 207 def_irq_default_handler ADC_IRQHandler
mbed_official 66:64ad953ee6c3 208 def_irq_default_handler BOD_IRQHandler
mbed_official 66:64ad953ee6c3 209 def_irq_default_handler USB_IRQHandler
mbed_official 66:64ad953ee6c3 210 def_irq_default_handler CAN_IRQHandler
mbed_official 66:64ad953ee6c3 211 def_irq_default_handler DMA_IRQHandler
mbed_official 66:64ad953ee6c3 212 def_irq_default_handler I2S_IRQHandler
mbed_official 66:64ad953ee6c3 213 def_irq_default_handler ENET_IRQHandler
mbed_official 66:64ad953ee6c3 214 def_irq_default_handler RIT_IRQHandler
mbed_official 66:64ad953ee6c3 215 def_irq_default_handler MCPWM_IRQHandler
mbed_official 66:64ad953ee6c3 216 def_irq_default_handler QEI_IRQHandler
mbed_official 66:64ad953ee6c3 217 def_irq_default_handler PLL1_IRQHandler
mbed_official 66:64ad953ee6c3 218 def_irq_default_handler USBActivity_IRQHandler
mbed_official 66:64ad953ee6c3 219 def_irq_default_handler CANActivity_IRQHandler
mbed_official 66:64ad953ee6c3 220 def_irq_default_handler DEF_IRQHandler
emilmont 10:3bc89ef62ce7 221
emilmont 10:3bc89ef62ce7 222 .end
emilmont 10:3bc89ef62ce7 223