Question

arm-linux-gcc 交叉编译问题，代码是照着书抄的，版本arm-linux-gcc4.4.3，PC ubuntu11.10

AREA BLOCK, CODE, READONLY
num EQU 20
ENTRY
start LDR R0, =src
LDR R1, =dst
MOV R2, #num
MOV SP, #0x400
blockcopy
MOVS R3,R2, LSR #3
BEQ copywords
STMFD SP!, {R4-R11}
octcopy
LDMIA R0!,{R4-R11}
STMIA R1!,{R4-R11}
SUBS R3,R3, #1
BNE octcopy
LDMFD SP!, {R4-R11}
copywords
ANDS R2, R2, #7
BEQ stop
wordcopy
LDR R3, [R0], #4
STR R3, [R0], #4
SUBS R2,R2, #1
BNE wordcopy
stop
MOV R0, #0x18
LDR R1, =0x20026
SWI 0x123456
AREA BlockData, DATA, READWRITE
src DCD 1,2,3,4,5,6,7,8,1,2,3,4,5,6,7,8,1,2,3,4
dst DCD 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0
END
编译结果：

arm2.s:1: Error: bad instruction `area BLOCK,CODE,READONLY'
arm2.s:2: Error: bad instruction `num EQU 20'
arm2.s:3: Error: bad instruction `entry'
arm2.s:4: Error: bad instruction `start LDR R0,=src'
arm2.s:8: Error: bad instruction `blockcopy'
arm2.s:12: Error: bad instruction `octcopy'
arm2.s:18: Error: bad instruction `copywords'
arm2.s:21: Error: bad instruction `wordcopy'
arm2.s:26: Error: bad instruction `stop'
arm2.s:30: Error: bad instruction `area BlockData,DATA,READWRITE'
arm2.s:31: Error: bad instruction `src DCD 1,2,3,4,5,6,7,8,1,2,3,4,5,6,7,8,1,2,3,4'
arm2.s:32: Error: bad instruction `dst DCD 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0'
arm2.s:33: Error: bad instruction `end'
求前辈，高手指教

Answer 1

这是汇编代码啦，你应该用汇编交叉编译的，估计你用错了编译工具，所以才有这么多错误信息。

追问

用的是arm-linux-gcc4.4.3,配置就按网上的教程安装的，arm-linux-gcc -v,也显示了版本，安装方法

Answer 2

汇编用的是大写的.S

Answer 3

在你的 label 前面加上 . 看看。

追问

唉，没用耶！