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Using Assembly Language in Linux.
IntelºÍAT&T»ã±àÓï·¨²îÒ죺
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Intex Syntax
mov eax,1
mov ebx,0ffh
int 80h
AT&T Syntax
movl $1,%eax
movl $0xff,%ebx
int $0x80
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Intel »ã±àÓï·¨£º
instr dest,source
mov eax,[ecx]
AT&T »ã±àÓï·¨£º
instr source,dest
movl (%ecx),%eax
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IntelÓ﷨ʹÓÃÖÐÀ¨ºÅ[]£¬ºóÕßʹÓÃСÀ¨ºÅ()
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Intex Syntax
mov eax,[ebx]
mov eax,[ebx+3]
AT&T Syntax
movl (%ebx),%eax
movl 3(%ebx),%eax
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AT&T»ã±àÖ¸ÁîÓкó׺£¬ÒÔ±íÃ÷Êý¾ÝÀàÐÍ£¨8λ¡¢16λµÈ£©£»IntelÔò¸ù¾Ý¼Ä´æÆ÷×Ô¶¯Ê¶±ð¡£
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Intel Syntax
mov al,bl
mov ax,bx
mov eax,ebx
mov eax, dword ptr [ebx]
AT&T Syntax
movb %bl,%al
movw %bx,%ax
movl %ebx,%eax
movl (%ebx),%eax
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Intel£ºsegreg:[base+index*scale+disp]
AT&T£º %segreg:disp(base,index,scale).
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1 #include <stdio.h>
2
3 int main(void) {
4 long eax=4;
5 long ebx=2;
6
7 __asm__ __volatile__ ("addl %1, %0"
8
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sudo emacs /etc/hosts
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64.147.188.86 www.xmark.com
64.147.188.92 api.xmarks.com
64.147.188.89 login.xmarks.com
64.147.188.87 sync.xmarks.com
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