【转】ARM汇编和Gnu汇编的转换

将ARM ADS下的汇编码移植到GCC for ARM编译器时，有如下规则：

1, 注释行以"@"或"/* ... */"代替";"

 

2, GET或INCLUDE => .INCLUDE
如：get option.a =>     .include "option.a"

 

3, EQU => .equ
TCLK2   EQU   PB25    =>         .equ   TCLK2, PB25
     SETA ==> .equ
     SETL ==> .equ

BUSWIDTH SETA 16   => .equ BUSWIDTH, 16

 

4, EXPORT => .global
     IMPORT => .extern
     GBLL => .global
     GBLA => .global

 

5, DCD => .long

 

6, IF :DEF: => .IFDEF
     ELSE => .ELSE
     ENDIF => .ENDIF
     :OR:    => |
     :SHL:    =>      <<

 

7,   END    =>.end
NOTE:在被include的头文件中，如"option.a"中，不再需要.end，否则会导致主汇编程序结束。

 

8,   符号定义加"："号
Entry =>    Entry:
AREA Word, CODE, READONLY ==> .text
AREA Block, DATA, READWRITE ==> .data
CODE32     ==> .arm
CODE16     ==> .thumb

 

9,   MACRO ==>   .macro
     MEND   ==> .endm