嵌入式汇编文档格式.docx

嵌入式汇编文档格式.docx

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03in_out.c

intin_out=10;

mov%1,%0\n"

mov%0,#20\n"

+r"

（in_out）,"

in_out=%d\n"

in_out）;

04in_out.c

__asm____volatile（

+&

05add.c

intsum=0;

inta=1;

intb=2;

movr0,%1\n"

movr1,%2\n"

add%0,r0,r1\n"

（sum）

（a）,"

（b）

r0"

"

r1"

1+2=%d\n"

sum）;

return0;

06sub.c

intsub;

movr0,#2\n"

movr1,#3\n"

sub%0,r1,r0\n"

（sub）

3-2=%d\n"

sub）;

07mul.c

intout=0;

mul%0,r0,r1\n"

2x3=%d\n"

08cal.c

inta=1,b=2,c=3,d=5,e=0;

addr0,%1,%2\n"

mulr1,r0,%3\n"

sub%0,r1,%4\n"

（e）

（b）,"

（c）,"

（d）

（1+2）x3-5=%d\n"

e）;

09cmp.c

movr0,#1\n"

movr1,#2\n"

cmpr0,r1\n"

movgt%0,#1\n"

movle%0,#2\n"

10sort.c

inta,b,c;

movr2,#3\n"

movltr3,r0\n"

movltr0,r1\n"

movltr1,r3\n"

cmpr0,r2\n"

movltr0,r2\n"

movltr2,r3\n"

cmpr1,r2\n"

movltr3,r2\n"

movltr2,r1\n"

mov%0,r0\n"

mov%1,r1\n"

mov%2,r2\n"

（c）

r2"

r3"

a=%db=%dc=%d\n"

a,b,c）;

11and.c

inta,b,c,d,e=5;

movr0,#0x5\n"

movr1,#0x6\n"

and%0,r0,#6\n"

orr%1,r0,r1\n"

eor%2,r0,r1\n"

bic%3,r0,r1\n"

and%4,#6\n"

（d）,"

5&

6=%d\n"

a）;

5|6=%d\n"

b）;

5^6=%d\n"

c）;

not（6）=%d\n"

d）;

12mrs.c

intcpsr;

mrs%0,cpsr\n"

orr%0,%0,#0x30000000\n"

msrcpsr,%0\n"

（cpsr）

cpsr=%x\n"

cpsr）;

13logical.c

inta,b,c,d,e;

movr0,#0xfc\n"

movr1,#-10\n"

mov%0,r0,lsr#1\n"

mov%1,r0,lsl#1\n"

mov%2,r1,asr#1\n"

mov%3,r1,lsr#1\n"

mov%4,r0,ror#4\n"

0xfc>

>

1=%x\n"

0xfc<

<

-10>

a1=%d\n"

l1=%d\n"

0xfcr>

4=%x\n"

14b.c

inttext;

#if0

mov%0,#15\n"

bhere\n"

mov%0,#10\n"

here:

\n"

（text）

text=%d\n"

text）;

#endif

blhere\n"

__asm__（

addr0,r0,r1\n"

movpc,lr\n"

15apcs.c

inta;

bladd\n"

（a）

a=%d\n"

intadd（inta,intb）

returna+b;

16ldr.c

inta=5;

ldrr0,%0\n"

addr0,r0,#2\n"

strr0,%0\n"

m"

memeroy"

intb,c;

data:

.word0x1,0x2,0x3,0x4\n"

//"

ldrr0,=data\n"

adrr0,data\n"

ldr%0,[r0]\n"

ldr%1,[r0,#4]\n"

ldr%0,[r0,#4]!

ldr%1,[r0,#4]!

ldr%0,[r0],#4\n"

ldr%1,[r0]\n"

b=%d\n"

17list.c

list_create:

subsp,sp,#24\n"

movr0,sp\n"

movr1,#10\n"

strr1,[sp]\n"

addr0,r0,#8\n"

strr0,[sp,#4]\n"

movr1,#20\n"

strr1,[sp,#8]\n"

strr0,[sp,#12]\n"

movr1,#30\n"

strr1,[sp,#16]\n"

movr0,#0\n"

strr0,[sp,#20]\n"

list_find:

movr4,#340\n"

ldrr1,[r0],#4\n"

loop:

cmpr1,r4\n"

moveq%0,#1\n"

movne%0,#0\n"

beqend\n"

ldrr3,[r0],#8\n"

cmpr3,#0\n"

ldrr1,[r3]\n"

bloop\n"

end:

addsp,sp,#24\n"

r4"

18push.c

inta,b,c,d;

movr3,#4\n"

stmfdsp!

{r0-r3}\n"

ldmfdsp!

{r4-r7}\n"

mov%0,r4\n"

mov%1,r5\n"

mov%2,r6\n"

mov%3,r7\n"

r5"

r6"

r7"

c=%d\n"

d=%d\n"

19imm.c

movr4,#0x00ff00\n"

msrcpsr,#0x80000000\n"

20mod.c

intb,s,g;

ldrr0,=0x123\n"

blmod\n"

mov%0,r1\n"

mov%1,r2\n"

mov%2,r3\n"

（s）,"

（g）

s=%d\n"

s）;

g=%d\n"

g）;

mod:

andr4,r0,#0xf00\n"

movr1,r4,lsr#8\n"

andr4,r0,#0xf0\n"

movr2,r4,lsr#4\n"

andr4,r0,#0xf\n"

movr3,r4,lsr#0\n"