Assembly 这个ARM组装程序是做什么的?
谁能给我解释一下这个ARM组装程序的功能吗Assembly 这个ARM组装程序是做什么的?,assembly,arm,Assembly,Arm,谁能给我解释一下这个ARM组装程序的功能吗 .L5: .worddata .wordtotal _start: ldr ip, .L5 mov r1, #0 ldr r0, .L5+4 mov r3, r1 mov r2, r1 ldr ip, [ip, #0] str r1, [r0, #0] .L2: ldr r1, [ip, r3] add r3, r3, #4 cmp r3, #64
.L5:
.worddata
.wordtotal
_start:
ldr ip, .L5
mov r1, #0
ldr r0, .L5+4
mov r3, r1
mov r2, r1
ldr ip, [ip, #0]
str r1, [r0, #0]
.L2:
ldr r1, [ip, r3]
add r3, r3, #4
cmp r3, #64
add r2, r2, r1
str r2, [r0, #0]
bne .L2
这个函数看起来既琐碎又愚蠢
extern int * worddata;
extern volatile int wordtotal;
void start(void)
{
int i, temp;
wordtotal = 0;
for (i = 0; i < 16; ++i)
{
temp = worddata[i];
wordtotal += temp;
}
}
extern int*worddata;
外部变量int-wordtotal;
作废开始(作废)
{
int i,温度;
wordtotal=0;
对于(i=0;i<16;++i)
{
temp=worddata[i];
wordtotal+=温度;
}
}
玩得开心。可能重复