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90 lines
2.5 KiB
C
90 lines
2.5 KiB
C
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/*
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Nullsoft Expression Evaluator Library (NS-EEL)
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Copyright (C) 1999-2003 Nullsoft, Inc.
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ns-eel-addfuncs.h: defines macros useful for adding functions to the compiler
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This software is provided 'as-is', without any express or implied
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warranty. In no event will the authors be held liable for any damages
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arising from the use of this software.
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Permission is granted to anyone to use this software for any purpose,
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including commercial applications, and to alter it and redistribute it
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freely, subject to the following restrictions:
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1. The origin of this software must not be misrepresented; you must not
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claim that you wrote the original software. If you use this software
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in a product, an acknowledgment in the product documentation would be
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appreciated but is not required.
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2. Altered source versions must be plainly marked as such, and must not be
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misrepresented as being the original software.
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3. This notice may not be removed or altered from any source distribution.
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*/
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#ifndef __NS_EEL_ADDFUNCS_H__
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#define __NS_EEL_ADDFUNCS_H__
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typedef void (*NSEEL_PPPROC)(void *data, int data_size, void **userfunc_data);
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// these are used for making your own naked functions in C.
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/*
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For example:
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static double (*__acos)(double) = &acos;
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__declspec ( naked ) void _asm_acos(void)
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{
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FUNC1_ENTER
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*__nextBlock = __acos(*parm_a);
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FUNC_LEAVE
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}
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__declspec ( naked ) void _asm_acos_end(void) {}
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If you want to do straight asm, then , well, you can use your imagination
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(eax, ebx, ecx are input, eax is output, all points to "double")
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if you need 8 bytes of temp space for your output, use esi and increment esi by 8
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be sure to preserve edi, too.
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*/
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#define FUNC1_ENTER \
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double *parm_a, *__nextBlock; \
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__asm { mov ebp, esp } \
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__asm { sub esp, __LOCAL_SIZE } \
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__asm { mov dword ptr parm_a, eax } \
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__asm { mov __nextBlock, esi }
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#define FUNC2_ENTER \
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double *parm_a,*parm_b,*__nextBlock; \
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__asm { mov ebp, esp } \
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__asm { sub esp, __LOCAL_SIZE } \
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__asm { mov dword ptr parm_a, eax } \
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__asm { mov dword ptr parm_b, ebx } \
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__asm { mov __nextBlock, esi }
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#define FUNC3_ENTER \
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double *parm_a,*parm_b,*parm_c,*__nextBlock; \
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__asm { mov ebp, esp } \
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__asm { sub esp, __LOCAL_SIZE } \
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__asm { mov dword ptr parm_a, eax } \
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__asm { mov dword ptr parm_b, ebx } \
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__asm { mov dword ptr parm_c, ecx } \
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__asm { mov __nextBlock, esi }
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#define FUNC_LEAVE \
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__asm { mov eax, esi } \
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__asm { add esi, 8 } \
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__asm { mov esp, ebp }
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#define NSEEL_CGEN_CALL __fastcall
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#endif//__NS_EEL_ADDFUNCS_H__
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