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| author | sprhawk <hongbo@yang.me> | 2014-08-29 01:48:19 +0800 |
|---|---|---|
| committer | sprhawk <hongbo@yang.me> | 2014-08-29 01:48:19 +0800 |
| commit | 214951cc8d485e826ec52a381b8e50f0e75aafa1 (patch) | |
| tree | e86687a76367eae29bd6fe1328a12eea937d7054 /gcc_startup_nrf51.s | |
| download | nrf51822-posix-build-scripts-214951cc8d485e826ec52a381b8e50f0e75aafa1.tar.gz nrf51822-posix-build-scripts-214951cc8d485e826ec52a381b8e50f0e75aafa1.tar.bz2 nrf51822-posix-build-scripts-214951cc8d485e826ec52a381b8e50f0e75aafa1.tar.xz nrf51822-posix-build-scripts-214951cc8d485e826ec52a381b8e50f0e75aafa1.zip | |
modified from nordic nRF51 SDK
Diffstat (limited to 'gcc_startup_nrf51.s')
| -rw-r--r-- | gcc_startup_nrf51.s | 270 |
1 files changed, 270 insertions, 0 deletions
diff --git a/gcc_startup_nrf51.s b/gcc_startup_nrf51.s new file mode 100644 index 0000000..89f0a6e --- /dev/null +++ b/gcc_startup_nrf51.s @@ -0,0 +1,270 @@ +/*
+Copyright (c) 2013, Nordic Semiconductor ASA
+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 Nordic Semiconductor ASA 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 THE COPYRIGHT HOLDER OR CONTRIBUTORS 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.
+*/
+
+/*
+NOTE: Template files (including this one) are application specific and therefore
+expected to be copied into the application project folder prior to its use!
+*/
+
+ .syntax unified
+ .arch armv6-m
+
+ .section .stack
+ .align 3
+#ifdef __STACK_SIZE
+ .equ Stack_Size, __STACK_SIZE
+#else
+ .equ Stack_Size, 2048
+#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, 2048
+#endif
+ .globl __HeapBase
+ .globl __HeapLimit
+__HeapBase:
+ .if Heap_Size
+ .space Heap_Size
+ .endif
+ .size __HeapBase, . - __HeapBase
+__HeapLimit:
+ .size __HeapLimit, . - __HeapLimit
+
+ .section .Vectors
+ .align 2
+ .globl __Vectors
+__Vectors:
+ .long __StackTop /* Top of Stack */
+ .long Reset_Handler /* Reset Handler */
+ .long NMI_Handler /* NMI Handler */
+ .long HardFault_Handler /* Hard Fault Handler */
+ .long 0 /* Reserved */
+ .long 0 /* Reserved */
+ .long 0 /* Reserved */
+ .long 0 /* Reserved */
+ .long 0 /* Reserved */
+ .long 0 /* Reserved */
+ .long 0 /* Reserved */
+ .long SVC_Handler /* SVCall Handler */
+ .long 0 /* Reserved */
+ .long 0 /* Reserved */
+ .long PendSV_Handler /* PendSV Handler */
+ .long SysTick_Handler /* SysTick Handler */
+
+ /* External Interrupts */
+ .long POWER_CLOCK_IRQHandler /*POWER_CLOCK */
+ .long RADIO_IRQHandler /*RADIO */
+ .long UART0_IRQHandler /*UART0 */
+ .long SPI0_TWI0_IRQHandler /*SPI0_TWI0 */
+ .long SPI1_TWI1_IRQHandler /*SPI1_TWI1 */
+ .long 0 /*Reserved */
+ .long GPIOTE_IRQHandler /*GPIOTE */
+ .long ADC_IRQHandler /*ADC */
+ .long TIMER0_IRQHandler /*TIMER0 */
+ .long TIMER1_IRQHandler /*TIMER1 */
+ .long TIMER2_IRQHandler /*TIMER2 */
+ .long RTC0_IRQHandler /*RTC0 */
+ .long TEMP_IRQHandler /*TEMP */
+ .long RNG_IRQHandler /*RNG */
+ .long ECB_IRQHandler /*ECB */
+ .long CCM_AAR_IRQHandler /*CCM_AAR */
+ .long WDT_IRQHandler /*WDT */
+ .long RTC1_IRQHandler /*RTC1 */
+ .long QDEC_IRQHandler /*QDEC */
+ .long LPCOMP_IRQHandler /*LPCOMP */
+ .long SWI0_IRQHandler /*SWI0 */
+ .long SWI1_IRQHandler /*SWI1 */
+ .long SWI2_IRQHandler /*SWI2 */
+ .long SWI3_IRQHandler /*SWI3 */
+ .long SWI4_IRQHandler /*SWI4 */
+ .long SWI5_IRQHandler /*SWI5 */
+ .long 0 /*Reserved */
+ .long 0 /*Reserved */
+ .long 0 /*Reserved */
+ .long 0 /*Reserved */
+ .long 0 /*Reserved */
+ .long 0 /*Reserved */
+
+
+ .size __Vectors, . - __Vectors
+
+/* Reset Handler */
+
+ .equ NRF_POWER_RAMON_ADDRESS, 0x40000524
+ .equ NRF_POWER_RAMONB_ADDRESS, 0x40000554
+ .equ NRF_POWER_RAMONx_RAMxON_ONMODE_Msk, 0x3
+
+ .text
+ .thumb
+ .thumb_func
+ .align 1
+ .globl Reset_Handler
+ .type Reset_Handler, %function
+Reset_Handler:
+ .fnstart
+
+/* Make sure ALL RAM banks are powered on */
+ MOVS R1, #NRF_POWER_RAMONx_RAMxON_ONMODE_Msk
+
+ LDR R0, =NRF_POWER_RAMON_ADDRESS
+ LDR R2, [R0]
+ ORRS R2, R1
+ STR R2, [R0]
+
+ LDR R0, =NRF_POWER_RAMONB_ADDRESS
+ LDR R2, [R0]
+ ORRS R2, R1
+ STR R2, [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__
+
+ subs r3, r2
+ ble .LC0
+
+.LC1:
+ subs r3, 4
+ ldr r0, [r1,r3]
+ str r0, [r2,r3]
+ bgt .LC1
+.LC0:
+
+ LDR R0, =SystemInit
+ BLX R0
+ LDR R0, =_start
+ BX R0
+
+ .pool
+ .cantunwind
+ .fnend
+ .size Reset_Handler,.-Reset_Handler
+
+ .section ".text"
+
+
+/* Dummy Exception Handlers (infinite loops which can be modified) */
+
+ .weak NMI_Handler
+ .type NMI_Handler, %function
+NMI_Handler:
+ B .
+ .size NMI_Handler, . - NMI_Handler
+
+
+ .weak HardFault_Handler
+ .type HardFault_Handler, %function
+HardFault_Handler:
+ B .
+ .size HardFault_Handler, . - HardFault_Handler
+
+
+ .weak SVC_Handler
+ .type SVC_Handler, %function
+SVC_Handler:
+ B .
+ .size SVC_Handler, . - SVC_Handler
+
+
+ .weak PendSV_Handler
+ .type PendSV_Handler, %function
+PendSV_Handler:
+ B .
+ .size PendSV_Handler, . - PendSV_Handler
+
+
+ .weak SysTick_Handler
+ .type SysTick_Handler, %function
+SysTick_Handler:
+ B .
+ .size SysTick_Handler, . - SysTick_Handler
+
+
+/* IRQ Handlers */
+
+ .globl Default_Handler
+ .type Default_Handler, %function
+Default_Handler:
+ B .
+ .size Default_Handler, . - Default_Handler
+
+ .macro IRQ handler
+ .weak \handler
+ .set \handler, Default_Handler
+ .endm
+
+ IRQ POWER_CLOCK_IRQHandler
+ IRQ RADIO_IRQHandler
+ IRQ UART0_IRQHandler
+ IRQ SPI0_TWI0_IRQHandler
+ IRQ SPI1_TWI1_IRQHandler
+ IRQ GPIOTE_IRQHandler
+ IRQ ADC_IRQHandler
+ IRQ TIMER0_IRQHandler
+ IRQ TIMER1_IRQHandler
+ IRQ TIMER2_IRQHandler
+ IRQ RTC0_IRQHandler
+ IRQ TEMP_IRQHandler
+ IRQ RNG_IRQHandler
+ IRQ ECB_IRQHandler
+ IRQ CCM_AAR_IRQHandler
+ IRQ WDT_IRQHandler
+ IRQ RTC1_IRQHandler
+ IRQ QDEC_IRQHandler
+ IRQ LPCOMP_IRQHandler
+ IRQ SWI0_IRQHandler
+ IRQ SWI1_IRQHandler
+ IRQ SWI2_IRQHandler
+ IRQ SWI3_IRQHandler
+ IRQ SWI4_IRQHandler
+ IRQ SWI5_IRQHandler
+
+
+ .end
+
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