70 lines
1.9 KiB
C++
70 lines
1.9 KiB
C++
/**
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* =========================================================================
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* File : winit.cpp
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* Project : 0 A.D.
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* Description : windows-specific module init and shutdown mechanism
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* =========================================================================
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*/
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// license: GPL; see lib/license.txt
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#include "precompiled.h"
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#include "winit.h"
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typedef LibError (*PfnLibErrorVoid)(void);
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// pointers to start and end of function tables.
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// note: COFF tosses out empty segments, so we have to put in one value
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// (zero, because CallFunctionPointers has to ignore entries =0 anyway).
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#pragma SECTION_PRE_LIBC(A)
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PfnLibErrorVoid pre_libc_begin = 0;
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#pragma SECTION_PRE_LIBC(Z)
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PfnLibErrorVoid pre_libc_end = 0;
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#pragma SECTION_PRE_MAIN(A)
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PfnLibErrorVoid pre_main_begin = 0;
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#pragma SECTION_PRE_MAIN(Z)
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PfnLibErrorVoid pre_main_end = 0;
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#pragma SECTION_POST_ATEXIT(A)
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PfnLibErrorVoid shutdown_begin = 0;
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#pragma SECTION_POST_ATEXIT(Z)
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PfnLibErrorVoid shutdown_end = 0;
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#pragma SECTION_RESTORE
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// note: /include is not necessary, since these are referenced below.
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#pragma comment(linker, "/merge:.LIB=.data")
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/**
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* call into a range of function pointers.
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* @param [begin, end): STL-style range
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*
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* note: pointers = 0 are ignored. this is because the above placeholders
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* are initialized to 0 and because the range may be larger than
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* expected due to COFF section padding (with zeroes).
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**/
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static void CallFunctionPointers(PfnLibErrorVoid* begin, PfnLibErrorVoid* end)
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{
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for(PfnLibErrorVoid* ppfunc = begin; ppfunc < end; ppfunc++)
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{
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if(*ppfunc)
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(*ppfunc)();
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}
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}
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void winit_CallPreLibcFunctions()
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{
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CallFunctionPointers(&pre_libc_begin, &pre_libc_end);
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}
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void winit_CallPreMainFunctions()
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{
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CallFunctionPointers(&pre_main_begin, &pre_main_end);
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}
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void winit_CallShutdownFunctions()
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{
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CallFunctionPointers(&shutdown_begin, &shutdown_end);
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}
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