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122 lines
2.4 KiB
Plaintext
122 lines
2.4 KiB
Plaintext
; NASM macro set to make interfacing to 32-bit programs easier
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; Also cool little macros to make NASM emulate some MASM things.
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;
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; Originally included in NASM. Modifications by Peter Johnson, 1999.
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;
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%imacro proc 1 ; begin a procedure definition
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%push proc
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global %1
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%1: push ebp
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mov ebp, esp
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%assign %$arg 8
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;%assign %$argnum 0
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%define %$procname %1
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%endmacro
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%imacro arg 0-1 4 ; used with the argument name as a label
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%00 equ %$arg
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;%assign %$argnum %$argnum+1
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;.arg%$argnum equ %1
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%assign %$arg %1+%$arg
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%endmacro
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%imacro endproc 0
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%ifnctx proc
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%error Mismatched `endproc'/`proc'
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%else
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; mov esp, ebp
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; pop ebp
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%ifdef LEGACY_ENDPROC
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ret
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%endif
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;__end_%$procname: ; useful for calculating function size
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; global %{$procname}_arglen
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;%{$procname}_arglen equ %$arg-8
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;%assign %$i 1
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;%rep %$argnum
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; global %{$procname}_arg%$i
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;%{$procname}_arg%$i equ %{$procname}.arg%$i
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;%assign %$i %$i+1
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;%endrep
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%pop
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%endif
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%endmacro
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; redefine ret instructions for in-proc cases
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%imacro ret 0-1
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%ifnctx proc
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ret %1
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%else
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mov esp, ebp
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pop ebp
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ret %1
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%endif
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%endmacro
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%imacro retf 0-1
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%ifnctx proc
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retf %1
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%else
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mov esp, ebp
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pop ebp
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retf %1
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%endif
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%endmacro
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%imacro retn 0-1
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%ifnctx proc
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retn %1
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%else
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mov esp, ebp
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pop ebp
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retn %1
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%endif
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%endmacro
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; invoke calls a C function
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; defaults to word (16 bit) size parameters
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%macro invoke 1-*
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%rotate -1
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;%define invoketype word
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%rep (%0-1)
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; %ifidni %1,dword
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; %define invoketype dword
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; %elifidni %1,word
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; %define invoketype word
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; %elifidni %1,byte
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; %define invoketype byte
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; %else
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%ifidni %1, cs
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o16 push %1
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%elifidni %1, ds
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o16 push %1
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%elifidni %1, es
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o16 push %1
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%elifidni %1, fs
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o16 push %1
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%elifidni %1, gs
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o16 push %1
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%elifidni %1, word cs
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o16 push %1
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%elifidni %1, word ds
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o16 push %1
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%elifidni %1, word es
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o16 push %1
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%elifidni %1, word fs
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o16 push %1
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%elifidni %1, word gs
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o16 push %1
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%else
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push %1
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%endif
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; %endif
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%rotate -1
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%endrep
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call %1
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%if (%0!=1)
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add esp, byte %{1}_arglen
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%endif
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%endmacro
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