请大侠解释下STM32的启动代码

只看该作者 · 2008-8-25 12:34

下面是IAR的反汇编窗口copy出来的

__program_start:
  08000120  4C02      LDR          R4, [PC,#0x008]          ; [0x800012C]=__low_level_init (0x80000ED)
  08000122  47A0      BLX          R4
  08000124  B130      CBZ          R0, 0x8000134
  08000126  4C02      LDR          R4, [PC,#0x008]          ; [0x8000130] =__segment_init (0x80000F1)
  08000128  47A0      BLX          R4
  0800012A  E003      B            0x8000134
  0800012C  00ED      LSLS         R5, R5#0x3
  0800012E  0800      LSRS         R0, R0#0x0
  08000130  00F1      LSLS         R1, R6#0x3
  08000132  0800      LSRS         R0, R0#0x0
  08000134  4C03      LDR          R4, [PC,#0x00C]          ; [0x8000144] =0x8007C85
  08000136  F04F0000  MOV          R0, #0x0
  0800013A  47A0      BLX          R4
_main:
...