shao ziyang / mbed-src-kl05

mbed library sources

Dependents:   frdm_kl05z_gpio_test

Fork of mbed-src by mbed official

targets/cmsis/TARGET_Freescale/TARGET_KLXX/TARGET_KL25Z/TOOLCHAIN_GCC_CW_NEWLIB/startup_MKL25Z4.s@82:0b31dbcd4769, 2014-01-31 (annotated)

Committer:
mbed_official
Date:
Fri Jan 31 10:00:06 2014 +0000
Revision:
82:0b31dbcd4769
Synchronized with git revision 74409cbd593d1daab530a57baaa563f30b04b018



Full URL: https://github.com/mbedmicro/mbed/commit/74409cbd593d1daab530a57baaa563f30b04b018/

Who changed what in which revision?

UserRevisionLine numberNew contents of line
mbed_official 82:0b31dbcd4769 1 /* File: startup_ARMCM0.S
mbed_official 82:0b31dbcd4769 2 * Purpose: startup file for Cortex-M0 devices. Should use with
mbed_official 82:0b31dbcd4769 3 * GCC for ARM Embedded Processors
mbed_official 82:0b31dbcd4769 4 * Version: V1.2
mbed_official 82:0b31dbcd4769 5 * Date: 15 Nov 2011
mbed_official 82:0b31dbcd4769 6 *
mbed_official 82:0b31dbcd4769 7 * Copyright (c) 2011, ARM Limited
mbed_official 82:0b31dbcd4769 8 * All rights reserved.
mbed_official 82:0b31dbcd4769 9 *
mbed_official 82:0b31dbcd4769 10 * Redistribution and use in source and binary forms, with or without
mbed_official 82:0b31dbcd4769 11 * modification, are permitted provided that the following conditions are met:
mbed_official 82:0b31dbcd4769 12 * Redistributions of source code must retain the above copyright
mbed_official 82:0b31dbcd4769 13 notice, this list of conditions and the following disclaimer.
mbed_official 82:0b31dbcd4769 14 * Redistributions in binary form must reproduce the above copyright
mbed_official 82:0b31dbcd4769 15 notice, this list of conditions and the following disclaimer in the
mbed_official 82:0b31dbcd4769 16 documentation and/or other materials provided with the distribution.
mbed_official 82:0b31dbcd4769 17 * Neither the name of the ARM Limited nor the
mbed_official 82:0b31dbcd4769 18 names of its contributors may be used to endorse or promote products
mbed_official 82:0b31dbcd4769 19 derived from this software without specific prior written permission.
mbed_official 82:0b31dbcd4769 20 *
mbed_official 82:0b31dbcd4769 21 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
mbed_official 82:0b31dbcd4769 22 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
mbed_official 82:0b31dbcd4769 23 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
mbed_official 82:0b31dbcd4769 24 * DISCLAIMED. IN NO EVENT SHALL ARM LIMITED BE LIABLE FOR ANY
mbed_official 82:0b31dbcd4769 25 * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
mbed_official 82:0b31dbcd4769 26 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
mbed_official 82:0b31dbcd4769 27 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
mbed_official 82:0b31dbcd4769 28 * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
mbed_official 82:0b31dbcd4769 29 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
mbed_official 82:0b31dbcd4769 30 * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
mbed_official 82:0b31dbcd4769 31 */
mbed_official 82:0b31dbcd4769 32 .syntax unified
mbed_official 82:0b31dbcd4769 33 .arch armv6-m
mbed_official 82:0b31dbcd4769 34
mbed_official 82:0b31dbcd4769 35 /* Memory Model
mbed_official 82:0b31dbcd4769 36 The HEAP starts at the end of the DATA section and grows upward.
mbed_official 82:0b31dbcd4769 37
mbed_official 82:0b31dbcd4769 38 The STACK starts at the end of the RAM and grows downward.
mbed_official 82:0b31dbcd4769 39
mbed_official 82:0b31dbcd4769 40 The HEAP and stack STACK are only checked at compile time:
mbed_official 82:0b31dbcd4769 41 (DATA_SIZE + HEAP_SIZE + STACK_SIZE) < RAM_SIZE
mbed_official 82:0b31dbcd4769 42
mbed_official 82:0b31dbcd4769 43 This is just a check for the bare minimum for the Heap+Stack area before
mbed_official 82:0b31dbcd4769 44 aborting compilation, it is not the run time limit:
mbed_official 82:0b31dbcd4769 45 Heap_Size + Stack_Size = 0x80 + 0x80 = 0x100
mbed_official 82:0b31dbcd4769 46 */
mbed_official 82:0b31dbcd4769 47 .section .stack
mbed_official 82:0b31dbcd4769 48 .align 3
mbed_official 82:0b31dbcd4769 49 #ifdef __STACK_SIZE
mbed_official 82:0b31dbcd4769 50 .equ Stack_Size, __STACK_SIZE
mbed_official 82:0b31dbcd4769 51 #else
mbed_official 82:0b31dbcd4769 52 .equ Stack_Size, 0x80
mbed_official 82:0b31dbcd4769 53 #endif
mbed_official 82:0b31dbcd4769 54 .globl __StackTop
mbed_official 82:0b31dbcd4769 55 .globl __StackLimit
mbed_official 82:0b31dbcd4769 56 __StackLimit:
mbed_official 82:0b31dbcd4769 57 .space Stack_Size
mbed_official 82:0b31dbcd4769 58 .size __StackLimit, . - __StackLimit
mbed_official 82:0b31dbcd4769 59 __StackTop:
mbed_official 82:0b31dbcd4769 60 .size __StackTop, . - __StackTop
mbed_official 82:0b31dbcd4769 61
mbed_official 82:0b31dbcd4769 62 .section .heap
mbed_official 82:0b31dbcd4769 63 .align 3
mbed_official 82:0b31dbcd4769 64 #ifdef __HEAP_SIZE
mbed_official 82:0b31dbcd4769 65 .equ Heap_Size, __HEAP_SIZE
mbed_official 82:0b31dbcd4769 66 #else
mbed_official 82:0b31dbcd4769 67 .equ Heap_Size, 0x80
mbed_official 82:0b31dbcd4769 68 #endif
mbed_official 82:0b31dbcd4769 69 .globl __HeapBase
mbed_official 82:0b31dbcd4769 70 .globl __HeapLimit
mbed_official 82:0b31dbcd4769 71 __HeapBase:
mbed_official 82:0b31dbcd4769 72 .space Heap_Size
mbed_official 82:0b31dbcd4769 73 .size __HeapBase, . - __HeapBase
mbed_official 82:0b31dbcd4769 74 __HeapLimit:
mbed_official 82:0b31dbcd4769 75 .size __HeapLimit, . - __HeapLimit
mbed_official 82:0b31dbcd4769 76
mbed_official 82:0b31dbcd4769 77 .section .isr_vector
mbed_official 82:0b31dbcd4769 78 .align 2
mbed_official 82:0b31dbcd4769 79 .globl __isr_vector
mbed_official 82:0b31dbcd4769 80 __isr_vector:
mbed_official 82:0b31dbcd4769 81 .long __StackTop /* Top of Stack */
mbed_official 82:0b31dbcd4769 82 .long Reset_Handler /* Reset Handler */
mbed_official 82:0b31dbcd4769 83 .long NMI_Handler /* NMI Handler */
mbed_official 82:0b31dbcd4769 84 .long HardFault_Handler /* Hard Fault Handler */
mbed_official 82:0b31dbcd4769 85 .long 0 /* Reserved */
mbed_official 82:0b31dbcd4769 86 .long 0 /* Reserved */
mbed_official 82:0b31dbcd4769 87 .long 0 /* Reserved */
mbed_official 82:0b31dbcd4769 88 .long 0 /* Reserved */
mbed_official 82:0b31dbcd4769 89 .long 0 /* Reserved */
mbed_official 82:0b31dbcd4769 90 .long 0 /* Reserved */
mbed_official 82:0b31dbcd4769 91 .long 0 /* Reserved */
mbed_official 82:0b31dbcd4769 92 .long SVC_Handler /* SVCall Handler */
mbed_official 82:0b31dbcd4769 93 .long 0 /* Reserved */
mbed_official 82:0b31dbcd4769 94 .long 0 /* Reserved */
mbed_official 82:0b31dbcd4769 95 .long PendSV_Handler /* PendSV Handler */
mbed_official 82:0b31dbcd4769 96 .long SysTick_Handler /* SysTick Handler */
mbed_official 82:0b31dbcd4769 97
mbed_official 82:0b31dbcd4769 98 /* External interrupts */
mbed_official 82:0b31dbcd4769 99 .long DMA0_IRQHandler /* DMA channel 0 transfer complete interrupt */
mbed_official 82:0b31dbcd4769 100 .long DMA1_IRQHandler /* DMA channel 1 transfer complete interrupt */
mbed_official 82:0b31dbcd4769 101 .long DMA2_IRQHandler /* DMA channel 2 transfer complete interrupt */
mbed_official 82:0b31dbcd4769 102 .long DMA3_IRQHandler /* DMA channel 3 transfer complete interrupt */
mbed_official 82:0b31dbcd4769 103 .long Reserved20_IRQHandler /* Reserved interrupt 20 */
mbed_official 82:0b31dbcd4769 104 .long FTFA_IRQHandler /* FTFA interrupt */
mbed_official 82:0b31dbcd4769 105 .long LVD_LVW_IRQHandler /* Low Voltage Detect, Low Voltage Warning */
mbed_official 82:0b31dbcd4769 106 .long LLW_IRQHandler /* Low Leakage Wakeup */
mbed_official 82:0b31dbcd4769 107 .long I2C0_IRQHandler /* I2C0 interrupt */
mbed_official 82:0b31dbcd4769 108 .long I2C1_IRQHandler /* I2C0 interrupt 25 */
mbed_official 82:0b31dbcd4769 109 .long SPI0_IRQHandler /* SPI0 interrupt */
mbed_official 82:0b31dbcd4769 110 .long SPI1_IRQHandler /* SPI1 interrupt */
mbed_official 82:0b31dbcd4769 111 .long UART0_IRQHandler /* UART0 status/error interrupt */
mbed_official 82:0b31dbcd4769 112 .long UART1_IRQHandler /* UART1 status/error interrupt */
mbed_official 82:0b31dbcd4769 113 .long UART2_IRQHandler /* UART2 status/error interrupt */
mbed_official 82:0b31dbcd4769 114 .long ADC0_IRQHandler /* ADC0 interrupt */
mbed_official 82:0b31dbcd4769 115 .long CMP0_IRQHandler /* CMP0 interrupt */
mbed_official 82:0b31dbcd4769 116 .long TPM0_IRQHandler /* TPM0 fault, overflow and channels interrupt */
mbed_official 82:0b31dbcd4769 117 .long TPM1_IRQHandler /* TPM1 fault, overflow and channels interrupt */
mbed_official 82:0b31dbcd4769 118 .long TPM2_IRQHandler /* TPM2 fault, overflow and channels interrupt */
mbed_official 82:0b31dbcd4769 119 .long RTC_IRQHandler /* RTC interrupt */
mbed_official 82:0b31dbcd4769 120 .long RTC_Seconds_IRQHandler /* RTC seconds interrupt */
mbed_official 82:0b31dbcd4769 121 .long PIT_IRQHandler /* PIT timer interrupt */
mbed_official 82:0b31dbcd4769 122 .long Reserved39_IRQHandler /* Reserved interrupt 39 */
mbed_official 82:0b31dbcd4769 123 .long USB0_IRQHandler /* USB0 interrupt */
mbed_official 82:0b31dbcd4769 124 .long DAC0_IRQHandler /* DAC interrupt */
mbed_official 82:0b31dbcd4769 125 .long TSI0_IRQHandler /* TSI0 interrupt */
mbed_official 82:0b31dbcd4769 126 .long MCG_IRQHandler /* MCG interrupt */
mbed_official 82:0b31dbcd4769 127 .long LPTimer_IRQHandler /* LPTimer interrupt */
mbed_official 82:0b31dbcd4769 128 .long Reserved45_IRQHandler /* Reserved interrupt 45 */
mbed_official 82:0b31dbcd4769 129 .long PORTA_IRQHandler /* Port A interrupt */
mbed_official 82:0b31dbcd4769 130 .long PORTD_IRQHandler /* Port D interrupt */
mbed_official 82:0b31dbcd4769 131
mbed_official 82:0b31dbcd4769 132 .size __isr_vector, . - __isr_vector
mbed_official 82:0b31dbcd4769 133
mbed_official 82:0b31dbcd4769 134 .section .text.Reset_Handler
mbed_official 82:0b31dbcd4769 135 .thumb
mbed_official 82:0b31dbcd4769 136 .thumb_func
mbed_official 82:0b31dbcd4769 137 .align 2
mbed_official 82:0b31dbcd4769 138 .globl Reset_Handler
mbed_official 82:0b31dbcd4769 139 .type Reset_Handler, %function
mbed_official 82:0b31dbcd4769 140 Reset_Handler:
mbed_official 82:0b31dbcd4769 141 /* Loop to copy data from read only memory to RAM. The ranges
mbed_official 82:0b31dbcd4769 142 * of copy from/to are specified by following symbols evaluated in
mbed_official 82:0b31dbcd4769 143 * linker script.
mbed_official 82:0b31dbcd4769 144 * __etext: End of code section, i.e., begin of data sections to copy from.
mbed_official 82:0b31dbcd4769 145 * __data_start__/__data_end__: RAM address range that data should be
mbed_official 82:0b31dbcd4769 146 * copied to. Both must be aligned to 4 bytes boundary. */
mbed_official 82:0b31dbcd4769 147
mbed_official 82:0b31dbcd4769 148 ldr r1, =__etext
mbed_official 82:0b31dbcd4769 149 ldr r2, =__data_start__
mbed_official 82:0b31dbcd4769 150 ldr r3, =__data_end__
mbed_official 82:0b31dbcd4769 151
mbed_official 82:0b31dbcd4769 152 subs r3, r2
mbed_official 82:0b31dbcd4769 153 ble .flash_to_ram_loop_end
mbed_official 82:0b31dbcd4769 154
mbed_official 82:0b31dbcd4769 155 movs r4, 0
mbed_official 82:0b31dbcd4769 156 .flash_to_ram_loop:
mbed_official 82:0b31dbcd4769 157 ldr r0, [r1,r4]
mbed_official 82:0b31dbcd4769 158 str r0, [r2,r4]
mbed_official 82:0b31dbcd4769 159 adds r4, 4
mbed_official 82:0b31dbcd4769 160 cmp r4, r3
mbed_official 82:0b31dbcd4769 161 blt .flash_to_ram_loop
mbed_official 82:0b31dbcd4769 162 .flash_to_ram_loop_end:
mbed_official 82:0b31dbcd4769 163
mbed_official 82:0b31dbcd4769 164 ldr r0, =SystemInit
mbed_official 82:0b31dbcd4769 165 blx r0
mbed_official 82:0b31dbcd4769 166 ldr r0, =_start
mbed_official 82:0b31dbcd4769 167 bx r0
mbed_official 82:0b31dbcd4769 168 .pool
mbed_official 82:0b31dbcd4769 169 .size Reset_Handler, . - Reset_Handler
mbed_official 82:0b31dbcd4769 170
mbed_official 82:0b31dbcd4769 171 .text
mbed_official 82:0b31dbcd4769 172 /* Macro to define default handlers. Default handler
mbed_official 82:0b31dbcd4769 173 * will be weak symbol and just dead loops. They can be
mbed_official 82:0b31dbcd4769 174 * overwritten by other handlers */
mbed_official 82:0b31dbcd4769 175 .macro def_default_handler handler_name
mbed_official 82:0b31dbcd4769 176 .align 1
mbed_official 82:0b31dbcd4769 177 .thumb_func
mbed_official 82:0b31dbcd4769 178 .weak \handler_name
mbed_official 82:0b31dbcd4769 179 .type \handler_name, %function
mbed_official 82:0b31dbcd4769 180 \handler_name :
mbed_official 82:0b31dbcd4769 181 b .
mbed_official 82:0b31dbcd4769 182 .size \handler_name, . - \handler_name
mbed_official 82:0b31dbcd4769 183 .endm
mbed_official 82:0b31dbcd4769 184
mbed_official 82:0b31dbcd4769 185 def_default_handler NMI_Handler
mbed_official 82:0b31dbcd4769 186 def_default_handler HardFault_Handler
mbed_official 82:0b31dbcd4769 187 def_default_handler SVC_Handler
mbed_official 82:0b31dbcd4769 188 def_default_handler PendSV_Handler
mbed_official 82:0b31dbcd4769 189 def_default_handler SysTick_Handler
mbed_official 82:0b31dbcd4769 190 def_default_handler DMA0_IRQHandler
mbed_official 82:0b31dbcd4769 191 def_default_handler DMA1_IRQHandler
mbed_official 82:0b31dbcd4769 192 def_default_handler DMA2_IRQHandler
mbed_official 82:0b31dbcd4769 193 def_default_handler DMA3_IRQHandler
mbed_official 82:0b31dbcd4769 194 def_default_handler Reserved20_IRQHandler
mbed_official 82:0b31dbcd4769 195 def_default_handler FTFA_IRQHandler
mbed_official 82:0b31dbcd4769 196 def_default_handler LVD_LVW_IRQHandler
mbed_official 82:0b31dbcd4769 197 def_default_handler LLW_IRQHandler
mbed_official 82:0b31dbcd4769 198 def_default_handler I2C0_IRQHandler
mbed_official 82:0b31dbcd4769 199 def_default_handler I2C1_IRQHandler
mbed_official 82:0b31dbcd4769 200 def_default_handler SPI0_IRQHandler
mbed_official 82:0b31dbcd4769 201 def_default_handler SPI1_IRQHandler
mbed_official 82:0b31dbcd4769 202 def_default_handler UART0_IRQHandler
mbed_official 82:0b31dbcd4769 203 def_default_handler UART1_IRQHandler
mbed_official 82:0b31dbcd4769 204 def_default_handler UART2_IRQHandler
mbed_official 82:0b31dbcd4769 205 def_default_handler ADC0_IRQHandler
mbed_official 82:0b31dbcd4769 206 def_default_handler CMP0_IRQHandler
mbed_official 82:0b31dbcd4769 207 def_default_handler TPM0_IRQHandler
mbed_official 82:0b31dbcd4769 208 def_default_handler TPM1_IRQHandler
mbed_official 82:0b31dbcd4769 209 def_default_handler TPM2_IRQHandler
mbed_official 82:0b31dbcd4769 210 def_default_handler RTC_IRQHandler
mbed_official 82:0b31dbcd4769 211 def_default_handler RTC_Seconds_IRQHandler
mbed_official 82:0b31dbcd4769 212 def_default_handler PIT_IRQHandler
mbed_official 82:0b31dbcd4769 213 def_default_handler Reserved39_IRQHandler
mbed_official 82:0b31dbcd4769 214 def_default_handler USB0_IRQHandler
mbed_official 82:0b31dbcd4769 215 def_default_handler DAC0_IRQHandler
mbed_official 82:0b31dbcd4769 216 def_default_handler TSI0_IRQHandler
mbed_official 82:0b31dbcd4769 217 def_default_handler MCG_IRQHandler
mbed_official 82:0b31dbcd4769 218 def_default_handler LPTimer_IRQHandler
mbed_official 82:0b31dbcd4769 219 def_default_handler Reserved45_IRQHandler
mbed_official 82:0b31dbcd4769 220 def_default_handler PORTA_IRQHandler
mbed_official 82:0b31dbcd4769 221 def_default_handler PORTD_IRQHandler
mbed_official 82:0b31dbcd4769 222
mbed_official 82:0b31dbcd4769 223 .weak DEF_IRQHandler
mbed_official 82:0b31dbcd4769 224 .set DEF_IRQHandler, Default_Handler
mbed_official 82:0b31dbcd4769 225
mbed_official 82:0b31dbcd4769 226 .end