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The official Mbed 2 C/C++ SDK provides the software platform and libraries to build your applications.
Last commit 20 Feb 2019 by 
mbed official
Diff: targets/cmsis/TARGET_Freescale/TARGET_K20XX/TARGET_TEENSY3_1/TOOLCHAIN_GCC_ARM/startup_MK20DX256.S
- Revision:
- 577:15494b56c2f3
- Parent:
- 521:149b1eddda04
--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/targets/cmsis/TARGET_Freescale/TARGET_K20XX/TARGET_TEENSY3_1/TOOLCHAIN_GCC_ARM/startup_MK20DX256.S Wed Jul 01 08:15:11 2015 +0100 @@ -0,0 +1,366 @@ +/* File: startup_MK20DX256.s + * Purpose: startup file for Cortex-M4 devices. Should use with + * GCC for ARM Embedded Processors + * Version: V1.3 + * Date: 08 Feb 2012 + * + * Copyright (c) 2015, ARM Limited + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions are met: + * Redistributions of source code must retain the above copyright + notice, this list of conditions and the following disclaimer. + * Redistributions in binary form must reproduce the above copyright + notice, this list of conditions and the following disclaimer in the + documentation and/or other materials provided with the distribution. + * Neither the name of the ARM Limited nor the + names of its contributors may be used to endorse or promote products + derived from this software without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND + * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED + * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE + * DISCLAIMED. IN NO EVENT SHALL ARM LIMITED BE LIABLE FOR ANY + * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES + * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; + * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND + * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT + * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS + * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + */ + .syntax unified + .arch armv7-m + + .section .stack + .align 3 +#ifdef __STACK_SIZE + .equ Stack_Size, __STACK_SIZE +#else + .equ Stack_Size, 0x400 +#endif + .globl __StackTop + .globl __StackLimit +__StackLimit: + .space Stack_Size + .size __StackLimit, . - __StackLimit +__StackTop: + .size __StackTop, . - __StackTop + + .section .heap + .align 3 +#ifdef __HEAP_SIZE + .equ Heap_Size, __HEAP_SIZE +#else + .equ Heap_Size, 0xC00 +#endif + .globl __HeapBase + .globl __HeapLimit +__HeapBase: + .if Heap_Size + .space Heap_Size + .endif + .size __HeapBase, . - __HeapBase +__HeapLimit: + .size __HeapLimit, . - __HeapLimit + + .section .isr_vector + .align 2 + .globl __isr_vector + +__isr_vector: + .long __StackTop /* Top of Stack */ + .long Reset_Handler /* Reset Handler */ + .long NMI_Handler /* NMI Handler */ + .long HardFault_Handler /* Hard Fault Handler */ + .long MemManage_Handler /* MPU Fault Handler */ + .long BusFault_Handler /* Bus Fault Handler */ + .long UsageFault_Handler /* Usage Fault Handler */ + .long 0 /* Reserved */ + .long 0 /* Reserved */ + .long 0 /* Reserved */ + .long 0 /* Reserved */ + .long SVC_Handler /* SVCall Handler */ + .long DebugMon_Handler /* Debug Monitor Handler */ + .long 0 /* Reserved */ + .long PendSV_Handler /* PendSV Handler */ + .long SysTick_Handler /* SysTick Handler */ + + /* External interrupts */ + .long DMA0_IRQHandler // DMA channel 0 transfer complete interrupt + .long DMA1_IRQHandler // DMA channel 0 transfer complete interrupt + .long DMA2_IRQHandler // DMA channel 0 transfer complete interrupt + .long DMA3_IRQHandler // DMA channel 0 transfer complete interrupt + .long DMA4_IRQHandler // DMA channel 0 transfer complete interrupt + .long DMA5_IRQHandler // DMA channel 0 transfer complete interrupt + .long DMA6_IRQHandler // DMA channel 0 transfer complete interrupt + .long DMA7_IRQHandler // DMA channel 0 transfer complete interrupt + .long DMA8_IRQHandler // DMA channel 0 transfer complete interrupt + .long DMA9_IRQHandler // DMA channel 0 transfer complete interrupt + .long DMA10_IRQHandler // DMA channel 0 transfer complete interrupt + .long DMA11_IRQHandler // DMA channel 0 transfer complete interrupt + .long DMA12_IRQHandler // DMA channel 0 transfer complete interrupt + .long DMA13_IRQHandler // DMA channel 0 transfer complete interrupt + .long DMA14_IRQHandler // DMA channel 0 transfer complete interrupt + .long DMA15_IRQHandler // DMA channel 0 transfer complete interrupt + .long DMA_Error_IRQHandler // DMA error interrupt + .long Reserved33_IRQHandler // Reserved interrupt 33 + .long FTFL_IRQHandler // FTFL interrupt + .long Read_Collision_IRQHandler // Read collision interrupt + .long LVD_LVW_IRQHandler // Low Voltage Detect, Low Voltage Warning + .long LLW_IRQHandler // Low Leakage Wakeup + .long Watchdog_IRQHandler // WDOG interrupt + .long Reserved39_IRQHandler // Reserved interrupt 39 + .long I2C0_IRQHandler // I2C0 interrupt + .long I2C1_IRQHandler // I2C1 interrupt + .long SPI0_IRQHandler // SPI0 interrupt + .long SPI1_IRQHandler // SPI1 interrupt + .long Reserved44_IRQHandler // Reserved interrupt 44 + .long CAN0_ORed_Message_buffer_IRQHandler // CAN0 OR'd message buffers interrupt + .long CAN0_Bus_Off_IRQHandler // CAN0 bus off interrupt + .long CAN0_Error_IRQHandler // CAN0 error interrupt + .long CAN0_Tx_Warning_IRQHandler // CAN0 Tx warning interrupt + .long CAN0_Rx_Warning_IRQHandler // CAN0 Rx warning interrupt + .long CAN0_Wake_Up_IRQHandler // CAN0 wake up interrupt + .long I2S0_Tx_IRQHandler // I2S0 transmit interrupt + .long I2S0_Rx_IRQHandler // I2S0 receive interrupt + .long Reserved53_IRQHandler // Reserved interrupt 53 + .long Reserved54_IRQHandler // Reserved interrupt 54 + .long Reserved55_IRQHandler // Reserved interrupt 55 + .long Reserved56_IRQHandler // Reserved interrupt 56 + .long Reserved57_IRQHandler // Reserved interrupt 57 + .long Reserved58_IRQHandler // Reserved interrupt 58 + .long Reserved59_IRQHandler // Reserved interrupt 59 + .long UART0_LON_IRQHandler // UART0 LON interrupt + .long UART0_RX_TX_IRQHandler // UART0 receive/transmit interrupt + .long UART0_ERR_IRQHandler // UART0 error interrupt + .long UART1_RX_TX_IRQHandler // UART1 receive/transmit interrupt + .long UART1_ERR_IRQHandler // UART1 error interrupt + .long UART2_RX_TX_IRQHandler // UART2 receive/transmit interrupt + .long UART2_ERR_IRQHandler // UART2 error interrupt + .long Reserved67_IRQHandler // Reserved interrupt 67 + .long Reserved68_IRQHandler // Reserved interrupt 68 + .long Reserved69_IRQHandler // Reserved interrupt 69 + .long Reserved70_IRQHandler // Reserved interrupt 70 + .long Reserved71_IRQHandler // Reserved interrupt 71 + .long Reserved72_IRQHandler // Reserved interrupt 72 + .long ADC0_IRQHandler // ADC0 interrupt + .long ADC1_IRQHandler // ADC1 interrupt + .long CMP0_IRQHandler // CMP0 interrupt + .long CMP1_IRQHandler // CMP1 interrupt + .long CMP2_IRQHandler // CMP2 interrupt + .long FTM0_IRQHandler // FTM0 fault, overflow and channels interrupt + .long FTM1_IRQHandler // FTM1 fault, overflow and channels interrupt + .long FTM2_IRQHandler // FTM2 fault, overflow and channels interrupt + .long CMT_IRQHandler // CMT interrupt + .long RTC_IRQHandler // RTC interrupt + .long RTC_Seconds_IRQHandler // RTC seconds interrupt + .long PIT0_IRQHandler // PIT timer channel 0 interrupt + .long PIT1_IRQHandler // PIT timer channel 1 interrupt + .long PIT2_IRQHandler // PIT timer channel 2 interrupt + .long PIT3_IRQHandler // PIT timer channel 3 interrupt + .long PDB0_IRQHandler // PDB0 interrupt + .long USB0_IRQHandler // USB0 interrupt + .long USBDCD_IRQHandler // USBDCD interrupt + .long Reserved91_IRQHandler // Reserved interrupt 91 + .long Reserved92_IRQHandler // Reserved interrupt 92 + .long Reserved93_IRQHandler // Reserved interrupt 93 + .long Reserved94_IRQHandler // Reserved interrupt 94 + .long Reserved95_IRQHandler // Reserved interrupt 95 + .long Reserved96_IRQHandler // Reserved interrupt 96 + .long DAC0_IRQHandler // DAC0 interrupt + .long Reserved98_IRQHandler // Reserved interrupt 98 + .long TSI0_IRQHandler // TSI0 interrupt + .long MCG_IRQHandler // MCG interrupt + .long LPTimer_IRQHandler // LPTimer interrupt + .long Reserved102_IRQHandler // Reserved interrupt 102 + .long PORTA_IRQHandler // Port A interrupt + .long PORTB_IRQHandler // Port B interrupt + .long PORTC_IRQHandler // Port C interrupt + .long PORTD_IRQHandler // Port D interrupt + .long PORTE_IRQHandler // Port E interrupt + .long Reserved108_IRQHandler // Reserved interrupt 108 + .long Reserved109_IRQHandler // Reserved interrupt 109 + .long SWI_IRQHandler // Software interrupt + + .size __isr_vector, . - __isr_vector + + .section .text.Reset_Handler + .thumb + .thumb_func + .align 2 + .globl Reset_Handler + .type Reset_Handler, %function +Reset_Handler: +/* + * Call SystemInit before loading the .data section to prevent the watchdog + * from resetting the board. + */ + ldr r0, =SystemInit + blx r0 + +/* Loop to copy data from read only memory to RAM. The ranges + * of copy from/to are specified by following symbols evaluated in + * linker script. + * __etext: End of code section, i.e., begin of data sections to copy from. + * __data_start__/__data_end__: RAM address range that data should be + * copied to. Both must be aligned to 4 bytes boundary. */ + + ldr r1, =__etext + ldr r2, =__data_start__ + ldr r3, =__data_end__ + +.Lflash_to_ram_loop: + cmp r2, r3 + ittt lt + ldrlt r0, [r1], #4 + strlt r0, [r2], #4 + blt .Lflash_to_ram_loop + +.Lflash_to_ram_loop_end: + + ldr r0, =_start + bx r0 + .pool + .size Reset_Handler, . - Reset_Handler + + .text +/* Macro to define default handlers. Default handler + * will be weak symbol and just dead loops. They can be + * overwritten by other handlers */ + .macro def_default_handler handler_name + .align 1 + .thumb_func + .weak \handler_name + .type \handler_name, %function +\handler_name : + b . + .size \handler_name, . - \handler_name + .endm + + def_default_handler NMI_Handler + def_default_handler HardFault_Handler + def_default_handler MemManage_Handler + def_default_handler BusFault_Handler + def_default_handler UsageFault_Handler + def_default_handler SVC_Handler + def_default_handler DebugMon_Handler + def_default_handler PendSV_Handler + def_default_handler SysTick_Handler + def_default_handler Default_Handler + + .macro def_irq_default_handler handler_name + .weak \handler_name + .set \handler_name, Default_Handler + .endm + + + def_irq_default_handler DMA0_IRQHandler + def_irq_default_handler DMA1_IRQHandler + def_irq_default_handler DMA2_IRQHandler + def_irq_default_handler DMA3_IRQHandler + def_irq_default_handler DMA4_IRQHandler + def_irq_default_handler DMA5_IRQHandler + def_irq_default_handler DMA6_IRQHandler + def_irq_default_handler DMA7_IRQHandler + def_irq_default_handler DMA8_IRQHandler + def_irq_default_handler DMA9_IRQHandler + def_irq_default_handler DMA10_IRQHandler + def_irq_default_handler DMA11_IRQHandler + def_irq_default_handler DMA12_IRQHandler + def_irq_default_handler DMA13_IRQHandler + def_irq_default_handler DMA14_IRQHandler + def_irq_default_handler DMA15_IRQHandler + def_irq_default_handler DMA_Error_IRQHandler + def_irq_default_handler Reserved33_IRQHandler + def_irq_default_handler FTFL_IRQHandler + def_irq_default_handler Read_Collision_IRQHandler + def_irq_default_handler LVD_LVW_IRQHandler + def_irq_default_handler LLW_IRQHandler + def_irq_default_handler Watchdog_IRQHandler + def_irq_default_handler Reserved39_IRQHandler + def_irq_default_handler I2C0_IRQHandler + def_irq_default_handler I2C1_IRQHandler + def_irq_default_handler SPI0_IRQHandler + def_irq_default_handler SPI1_IRQHandler + def_irq_default_handler Reserved44_IRQHandler + def_irq_default_handler CAN0_ORed_Message_buffer_IRQHandler + def_irq_default_handler CAN0_Bus_Off_IRQHandler + def_irq_default_handler CAN0_Error_IRQHandler + def_irq_default_handler CAN0_Tx_Warning_IRQHandler + def_irq_default_handler CAN0_Rx_Warning_IRQHandler + def_irq_default_handler CAN0_Wake_Up_IRQHandler + def_irq_default_handler I2S0_Tx_IRQHandler + def_irq_default_handler I2S0_Rx_IRQHandler + def_irq_default_handler Reserved53_IRQHandler + def_irq_default_handler Reserved54_IRQHandler + def_irq_default_handler Reserved55_IRQHandler + def_irq_default_handler Reserved56_IRQHandler + def_irq_default_handler Reserved57_IRQHandler + def_irq_default_handler Reserved58_IRQHandler + def_irq_default_handler Reserved59_IRQHandler + def_irq_default_handler UART0_LON_IRQHandler + def_irq_default_handler UART0_RX_TX_IRQHandler + def_irq_default_handler UART0_ERR_IRQHandler + def_irq_default_handler UART1_RX_TX_IRQHandler + def_irq_default_handler UART1_ERR_IRQHandler + def_irq_default_handler UART2_RX_TX_IRQHandler + def_irq_default_handler UART2_ERR_IRQHandler + def_irq_default_handler Reserved67_IRQHandler + def_irq_default_handler Reserved68_IRQHandler + def_irq_default_handler Reserved69_IRQHandler + def_irq_default_handler Reserved70_IRQHandler + def_irq_default_handler Reserved71_IRQHandler + def_irq_default_handler Reserved72_IRQHandler + def_irq_default_handler ADC0_IRQHandler + def_irq_default_handler ADC1_IRQHandler + def_irq_default_handler CMP0_IRQHandler + def_irq_default_handler CMP1_IRQHandler + def_irq_default_handler CMP2_IRQHandler + def_irq_default_handler FTM0_IRQHandler + def_irq_default_handler FTM1_IRQHandler + def_irq_default_handler FTM2_IRQHandler + def_irq_default_handler CMT_IRQHandler + def_irq_default_handler RTC_IRQHandler + def_irq_default_handler RTC_Seconds_IRQHandler + def_irq_default_handler PIT0_IRQHandler + def_irq_default_handler PIT1_IRQHandler + def_irq_default_handler PIT2_IRQHandler + def_irq_default_handler PIT3_IRQHandler + def_irq_default_handler PDB0_IRQHandler + def_irq_default_handler USB0_IRQHandler + def_irq_default_handler USBDCD_IRQHandler + def_irq_default_handler Reserved91_IRQHandler + def_irq_default_handler Reserved92_IRQHandler + def_irq_default_handler Reserved93_IRQHandler + def_irq_default_handler Reserved94_IRQHandler + def_irq_default_handler Reserved95_IRQHandler + def_irq_default_handler Reserved96_IRQHandler + def_irq_default_handler DAC0_IRQHandler + def_irq_default_handler Reserved98_IRQHandler + def_irq_default_handler TSI0_IRQHandler + def_irq_default_handler MCG_IRQHandler + def_irq_default_handler LPTimer_IRQHandler + def_irq_default_handler Reserved102_IRQHandler + def_irq_default_handler PORTA_IRQHandler + def_irq_default_handler PORTB_IRQHandler + def_irq_default_handler PORTC_IRQHandler + def_irq_default_handler PORTD_IRQHandler + def_irq_default_handler PORTE_IRQHandler + def_irq_default_handler Reserved108_IRQHandler + def_irq_default_handler Reserved109_IRQHandler + def_irq_default_handler SWI_IRQHandler + def_irq_default_handler DefaultISR + +/* Flash protection region, placed at 0x400 */ + .text + .thumb + .align 2 + .section .kinetis_flash_config_field,"a",%progbits +kinetis_flash_config: + .long 0xffffffff + .long 0xffffffff + .long 0xffffffff + .long 0xfffffffe + + .end
