tool/mbed/mbed-sdk/libraries/mbed/targets/cmsis/TARGET_NXP/TARGET_LPC23XX/TOOLCHAIN_ARM_MICRO/vector_functions.s

   1 ;/* mbed Microcontroller Library - InterruptIn
   2 ; * Copyright (c) 2006-2009 ARM Limited. All rights reserved.
   3 ; */
   4
   5 #line 1 "vector_functions.s"
   6 ;
   7 ;
   8 ;
   9
  10 #line 1 "vector_defns.h"
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  20 #line 21 "vector_defns.h"
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  39 #line 47 "vector_defns.h"
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  42 #line 58 "vector_defns.h"
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  61 #line 6 "vector_functions.s"
  62
  63
  64         AREA    VECFUNCS, CODE, READONLY
  65         ARM
  66         PRESERVE8
  67
  68
  69
  70
  71
  72         EXPORT __mbed_fiq [WEAK]
  73         EXPORT __mbed_undef [WEAK]
  74         EXPORT __mbed_prefetch_abort [WEAK]
  75         EXPORT __mbed_data_abort [WEAK]
  76         EXPORT __mbed_irq [WEAK]
  77         EXPORT __mbed_swi [WEAK]
  78         EXPORT __mbed_dcc_irq [WEAK]
  79         EXPORT __mbed_reset [WEAK]
  80         IMPORT __mbed_init_realmonitor
  81
  82 ;
  83 ;
  84 __mbed_fiq
  85         B       __mbed_fiq
  86
  87 ;
  88 ;
  89 __mbed_undef
  90         LDR     PC, =0x7fffffa0
  91
  92 ;
  93 ;
  94 __mbed_prefetch_abort
  95         LDR     PC, =0x7fffffb0
  96
  97 ;
  98 ;
  99 __mbed_data_abort
 100         LDR     PC, =0x7fffffc0
 101
 102 ;
 103 ;
 104 ;
 105 ;
 106 ;
 107 ;
 108 ;
 109 ;
 110 ;
 111 __mbed_irq
 112         ;
 113         MSR     CPSR_c, #0x1F:OR:0x80:OR:0x40
 114
 115         ;
 116         STMDB   sp!, {r0-r3,r12,lr}
 117
 118         ;
 119         MOV     r0, #0xFFFFFF00
 120         LDR     r0, [r0]
 121
 122         ;
 123         MOV     lr, pc
 124         BX      r0
 125
 126         ;
 127         MOV     r0, #0xFFFFFF00
 128         STR     r0, [r0]                        ;
 129
 130         ;
 131         LDMFD   sp!,{r0-r3,r12,lr}
 132
 133         ;
 134         MSR     CPSR_c, #0x12:OR:0x80:OR:0x40
 135
 136         ;
 137         SUBS    pc, lr, #4
 138
 139 ;
 140 ;
 141 ;
 142 ;
 143 __mbed_swi
 144         ;
 145         ;
 146         STMFD   sp!, {a4, r4, ip, lr}
 147
 148         ;
 149         LDR     r4, =0x40000040
 150
 151         ;
 152         ;
 153         LDR     a4, =0x00940000
 154         LDR     PC, =0x7ffff820
 155
 156 ;
 157 ;
 158 ;
 159 ;
 160 __mbed_dcc_irq
 161
 162         ;
 163
 164         ;
 165         LDMFD    sp!,{r0-r3,r12,lr}
 166
 167         ;
 168         MSR     CPSR_c, #0x12:OR:0x80:OR:0x40
 169
 170         ;
 171
 172         ;
 173         SUB     lr, lr, #4              ;
 174         STMFD   sp!, {ip,lr}            ;
 175
 176         ;
 177         LDR     LR, =0xfffff000
 178         STR     LR, [LR, #0xf00]
 179
 180         ;
 181         ;
 182         ;
 183         ;
 184         LDR     PC, =0x7fffffe0
 185
 186 ;
 187 ; __mbed_reset is called after reset
 188 ; we setup the stacks and realmonitor, then call Reset_Handler like on M3
 189
 190 ; Reset Handler
 191
 192 Reset_Handler   PROC
 193                 EXPORT  Reset_Handler             [WEAK]
 194                 IMPORT  SystemInit
 195                 IMPORT  __main
 196                 LDR     R0, =SystemInit
 197                 MOV     LR, PC
 198                 BX      R0
 199                 LDR     R0, =__main
 200                 BX      R0
 201                 ENDP
 202
 203 __mbed_reset
 204
 205         ;
 206
 207         LDR     R0, =(0x40000000 + 0x8000)
 208
 209         ;
 210         MSR     CPSR_c, #0x1B:OR:0x80:OR:0x40
 211         MOV     SP, R0
 212         SUB     R0, R0, #0x00000040
 213
 214         ;
 215         MSR     CPSR_c, #0x17:OR:0x80:OR:0x40
 216         MOV     SP, R0
 217         SUB     R0, R0, #0x00000040
 218
 219         ;
 220         MSR     CPSR_c, #0x11:OR:0x80:OR:0x40
 221         MOV     SP, R0
 222         SUB     R0, R0, #0x00000000
 223
 224         ;
 225         MSR     CPSR_c, #0x12:OR:0x80:OR:0x40
 226         MOV     SP, R0
 227         SUB     R0, R0, #0x00000040
 228
 229         ;
 230         MSR     CPSR_c, #0x13:OR:0x80:OR:0x40
 231         MOV     SP, R0
 232         SUB     R0, R0, #0x00000040
 233
 234         ;
 235         MSR     CPSR_c, #0x10
 236         MOV     SP, R0
 237
 238         ;
 239         LDR     R0, =__mbed_init_realmonitor
 240         MOV     LR, PC
 241         BX      R0
 242
 243         ;
 244         LDR     R0, =Reset_Handler
 245         BX      R0
 246
 247
 248         END