source: trunk/firmware/Cortex_M_Startup.s @ 25

Last change on this file since 25 was 6, checked in by f.jahn, 7 months ago
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43
44.macro ISR_HANDLER name=
45  .section .vectors, "ax"
46  .word \name
47  .section .init, "ax"
48  .thumb_func
49  .weak \name
50\name:
511: b 1b /* endless loop */
52.endm
53
54.macro ISR_RESERVED
55  .section .vectors, "ax"
56  .word 0
57.endm
58
59  .syntax unified
60  .global reset_handler
61  .global Reset_Handler
62  .equ Reset_Handler, reset_handler
63
64  .section .vectors, "ax"
65  .code 16
66  .balign 2
67  .global _vectors
68
69.macro DEFAULT_ISR_HANDLER name=
70  .thumb_func
71  .weak \name
72\name:
731: b 1b /* endless loop */
74.endm
75
76_vectors:
77  .word __stack_end__
78  .word reset_handler
79ISR_HANDLER NMI_Handler
80ISR_HANDLER HardFault_Handler
81ISR_HANDLER MemManage_Handler
82ISR_HANDLER BusFault_Handler
83ISR_HANDLER UsageFault_Handler
84ISR_RESERVED
85ISR_RESERVED
86ISR_RESERVED
87ISR_RESERVED
88ISR_HANDLER SVC_Handler
89ISR_HANDLER DebugMon_Handler
90ISR_RESERVED
91ISR_HANDLER PendSV_Handler
92ISR_HANDLER SysTick_Handler
93#ifdef __VECTORS
94#include __VECTORS
95#else 
96ISR_HANDLER ExternalISR0
97ISR_HANDLER ExternalISR1
98ISR_HANDLER ExternalISR2
99ISR_HANDLER ExternalISR3
100ISR_HANDLER ExternalISR4
101ISR_HANDLER ExternalISR5
102ISR_HANDLER ExternalISR6
103ISR_HANDLER ExternalISR7
104ISR_HANDLER ExternalISR8
105ISR_HANDLER ExternalISR9
106ISR_HANDLER ExternalISR10
107ISR_HANDLER ExternalISR11
108ISR_HANDLER ExternalISR12
109ISR_HANDLER ExternalISR13
110ISR_HANDLER ExternalISR14
111ISR_HANDLER ExternalISR15
112ISR_HANDLER ExternalISR16
113ISR_HANDLER ExternalISR17
114ISR_HANDLER ExternalISR18
115ISR_HANDLER ExternalISR19
116ISR_HANDLER ExternalISR20
117ISR_HANDLER ExternalISR21
118ISR_HANDLER ExternalISR22
119ISR_HANDLER ExternalISR23
120ISR_HANDLER ExternalISR24
121ISR_HANDLER ExternalISR25
122ISR_HANDLER ExternalISR26
123ISR_HANDLER ExternalISR27
124ISR_HANDLER ExternalISR28
125ISR_HANDLER ExternalISR29
126ISR_HANDLER ExternalISR30
127ISR_HANDLER ExternalISR31
128#endif
129  .section .vectors, "ax"
130_vectors_end:
131
132  .section .init, "ax"
133  .balign 2
134
135  .thumb_func
136  reset_handler:
137
138#ifndef __NO_SYSTEM_INIT
139  ldr r0, =__stack_end__
140  mov sp, r0
141  bl SystemInit
142#endif
143
144#if !defined(__SOFTFP__)
145  // Enable CP11 and CP10 with CPACR |= (0xf<<20)
146  movw r0, 0xED88
147  movt r0, 0xE000
148  ldr r1, [r0]
149  orrs r1, r1, #(0xf << 20)
150  str r1, [r0]
151#endif
152
153  b _start
154
155#ifndef __NO_SYSTEM_INIT
156  .thumb_func
157  .weak SystemInit
158SystemInit:
159  bx lr
160#endif
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