Opcode syntax: Difference between revisions
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The AT&T syntax format for macros: |
The AT&T syntax format for macros: |
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<source lang="asm"> |
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<code> |
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.macro <name> <args> |
.macro <name> <args> |
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<operations> |
<operations> |
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.endm |
.endm |
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</ |
</source> |
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Example: |
Example: |
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<source lang="asm"> |
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<pre> |
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.macro write string |
.macro write string |
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movw string, %si |
movw string, %si |
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call printstr |
call printstr |
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.endm |
.endm |
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</ |
</source> |
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This would be equivalent to the NASM macro: |
This would be equivalent to the NASM macro: |
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<source lang="asm"> |
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<pre> |
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%macro write 1 |
%macro write 1 |
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mov si, %1 |
mov si, %1 |
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call printstr |
call printstr |
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%endmacro |
%endmacro |
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</ |
</source> |
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Additionally, the cpp and |
Additionally, the cpp and [[M4]] macro preprocessors are often used for macro handling. |
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== Converting small snippets of code from Intel syntax to AT&T == |
== Converting small snippets of code from Intel syntax to AT&T == |
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