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标题: AT&T 和 NASM 的一些区别 [打印本页]

作者: beyes 时间: 2011-1-8 10:13
标题: AT&T 和 NASM 的一些区别
GAS memory operand          NASM memory operand
------------------                         -------------------

100                                           [100]
%es:100                                  [es:100]
(%eax)                                     [eax]
(%eax,%ebx)                            [eax+ebx]
(%ecx,%ebx,2)                         [ecx+ebx*2]
(,%ebx,2)                                  [ebx*2]
-10(%eax)                               [eax-10]
%ds:-10(%ebp)                         [ds:ebp-10]

GAS syntax          NASM syntax
==========          ===========

jmp *100             jmp  near [100]
call *100             call near [100]
jmp *%eax          jmp  near eax
jmp *%ecx          call near ecx
jmp *(%eax)       jmp  near [eax]
call *(%ebx)       call near [ebx]
ljmp *100          jmp  far  [100]
lcall *100          call far  [100]
ljmp *(%eax)       jmp  far  [eax]
lcall *(%ebx)       call far  [ebx]
ret                         retn
lret                      retf
lret $0x100          retf 0x100

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