將ARM ADS下的匯編碼移植到GCC for ARM編譯器時，有如下規則：
1, 注釋行以"@"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的頭文件中，如"option.a"中，不再需要.end，否則會導致主匯編程序結束。
8, 符號定義加"："號
Entry => Entry:
AREA Word, CODE, READONLY ==> .text
AREA Block, DATA, READWRITE ==> .data
CODE32 ==> .arm
CODE16 ==> .thumb
9, MACRO ==> .macro
MEND ==> .endm
