aplfw/sample/arm/ez_arm7/armcc/startup.s

   1
   2                                 EXPORT  Reset_Handler
   3                                 EXPORT  Undefined_Handler
   4                                 EXPORT  Swi_Handler
   5                                 EXPORT  Prefetch_Handler
   6                                 EXPORT  Abort_Handler
   7                                 IMPORT  _kernel_int_isp
   8
   9
  10
  11 ; %jp{プロセッサモード定義}
  12 Mode_USR                EQU     0x10            ; USR モード
  13 Mode_FIQ                EQU             0x11            ; FIQ モード
  14 Mode_IRQ                EQU     0x12            ; IRQ モード
  15 Mode_SVC                EQU             0x13            ; SVC モード
  16 Mode_ABT                EQU             0x17            ; ABT モード
  17 Mode_UND                EQU             0x1b            ; UND モード
  18 Mode_SYS                EQU     0x1f            ; SYS モード
  19 Mode_MASK               EQU     0x1f            ; モードビットマスク
  20
  21 ; %jp{フラグ定義}
  22 T_Bit                   EQU             0x20            ; T ビット
  23 F_Bit                   EQU     0x40            ; F ビット
  24 I_Bit                   EQU     0x80            ; I ビット
  25
  26
  27
  28                                 CODE32
  29
  30                                 PRESERVE8
  31                                 AREA    Init, CODE, READONLY
  32
  33
  34 ; リセットハンドラ
  35 Reset_Handler
  36                 ; --- SYSモード移行
  37                                 msr             cpsr_c, #Mode_SYS:OR:F_Bit:OR:I_Bit
  38
  39                 ; --- スタック仮設定
  40                                 ldr             r0, =_kernel_int_isp
  41                                 ldr     sp, [r0]
  42
  43                 ; --- C言語コードにジャンプ
  44                                 IMPORT  __main
  45                                 bl              __main
  46 end_loop
  47                                 b               end_loop
  48
  49
  50
  51
  52 ;  SWIハンドラ
  53 Swi_Handler
  54                                 movs    pc, lr
  55
  56
  57 ;  Undefined ハンドラ
  58 Undefined_Handler
  59                                 b               Undefined_Handler
  60
  61
  62 ;  Prefetch ハンドラ
  63 Prefetch_Handler
  64                                 b               Prefetch_Handler
  65
  66
  67 ;  Abort ハンドラ
  68 Abort_Handler
  69                                 b               Abort_Handler
  70
  71
  72
  73                                 END
  74
  75
  76 ; end of file