80 lines
1.4 KiB
C
80 lines
1.4 KiB
C
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// baby context cracking
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#if defined(_WIN32)
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# define OS_WINDOWS 1
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#elif defined(__gnu_linux__)
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# define OS_LINUX 1
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#else
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# error this configuration of compiler & OS is not supported
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#endif
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#if !defined(OS_WINDOWS)
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# define OS_WINDOWS 0
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#endif
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#if !defined(OS_LINUX)
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# define OS_LINUX 0
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#endif
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// linkage keyword abstraction
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#if OS_WINDOWS
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# define EXPORT_SYMBOL __declspec(dllexport)
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#elif OS_LINUX
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# define EXPORT_SYMBOL __attribute__ ((visibility ("default")))
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#else
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# error keyword abstractions missing for this OS
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#endif
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#if OS_WINDOWS
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# pragma section(".CRT$XCU", read)
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# define BEFORE_MAIN(n) extern void n(void); \
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__declspec(allocate(".CRT$XCU")) void (*n##__)(void) = n; \
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__pragma(comment(linker, "/include:" #n)) extern void n(void)
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#elif OS_LINUX
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# define BEFORE_MAIN(n) \
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__attribute__((constructor)) static void n(void)
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#else
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# error BEFORE_MAIN missing for this OS
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#endif
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// base layer types
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typedef void BASE_Library;
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// base symbols shared
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#if defined(BASE_IMPLEMENTOR)
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void base_func(void);
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#endif
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// dynamic function linkage protocol
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typedef struct BASE_Funcs{
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#define X(N,R,P) R (*N) P;
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#include "base.xlist.h"
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#undef X
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} BASE_Funcs;
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typedef BASE_Funcs* BASE_ExportFuncs(void);
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#if defined(BASE_IMPLEMENTOR)
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EXPORT_SYMBOL BASE_Funcs* base_export_functions(void);
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#endif
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#if !defined(BASE_IMPLEMENTOR)
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#define X(N,R,P) R (*N) P = 0;
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#include "base.xlist.h"
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#undef X
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#endif
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