stm32汇编，gcc编译器求教

只看该作者 · 2013-1-8 19:42

      LDR    R12,=rt_free_box
      MRS    R3,IPSR
      LSLS R3,#24
      BXNE R12
      MRS    R3,CONTROL
      LSLS R3,#31
      BXEQ R12
      SVC    0
      BX    LR

报错：
Error: thumb conditional instruction should be in IT block -- `bxne R12'
Error: thumb conditional instruction should be in IT block -- `bxeq R12'

gcc4.6.2编译器设置
AS = arm-none-eabi-gcc -x assembler-with-cpp
ASFLAGS = $(MCFLAGS) -mthumb -mfpu=vfp -mno-thumb-interwork -msoft-float -mfix-cortex-m3-ldrd -g -gdwarf-2 -Wa,-amhls=$(<:.s=.lst) $(ADEFS)

该程序为rvmdk下面正确可用的代码，我把它移植到gcc上面就出了这个问题。