105 lines
1.8 KiB
C++
105 lines
1.8 KiB
C++
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#include "sdk/amxxmodule.h"
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#include "VTableManager.h"
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#include "VTableEntries.h"
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#include "NEW_Util.h"
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void *VTableManager::InsertIntoVTable(void **vtable, int index, void *trampoline)
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{
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void *func;
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#if defined _WIN32
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DWORD OldFlags;
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VirtualProtect(&vtable[index],sizeof(int*),PAGE_READWRITE,&OldFlags);
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#elif defined __linux__
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mprotect(&vtable[index],sizeof(int*),PROT_READ|PROT_WRITE);
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#endif
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func=vtable[index];
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vtable[index]=trampoline;
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return func;
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};
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#define CLEAR_ENTRIES(Container) \
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i=Container.size(); \
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while (i--) \
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{ \
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Container[i]->Destroy(); \
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delete Container[i]; \
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} \
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Container.clear()
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void VTableManager::Cleanup(void)
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{
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int i;
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CLEAR_ENTRIES(UseEntries);
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CLEAR_ENTRIES(TakeDamageEntries);
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};
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void VTableEntryBase::CreateGenericTrampoline(VTableManager *manager, void **vtable, int vtid, int id, void **outtrampoline, void **origfunc, void *callee, int paramcount, int voidcall, int thiscall)
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{
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Trampolines::TrampolineMaker tramp;
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if (voidcall)
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{
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if (thiscall)
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{
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tramp.ThisVoidPrologue();
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}
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else
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{
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tramp.VoidPrologue();
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}
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}
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else
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{
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if (thiscall)
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{
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tramp.ThisReturnPrologue();
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}
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else
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{
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tramp.ReturnPrologue();
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}
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}
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while (paramcount)
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{
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tramp.PushParam(paramcount--);
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}
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if (thiscall)
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{
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tramp.PushThis();
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}
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tramp.PushNum(id);
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tramp.Call(callee);
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tramp.FreeTargetStack();
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if (voidcall)
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{
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#if defined _WIN32
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tramp.VoidEpilogueAndFree();
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#elif defined __linux__
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tramp.VoidEpilogue();
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#endif
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}
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else
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{
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#if defined _WIN32
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tramp.ReturnEpilogueAndFree();
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#elif defined __linux__
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tramp.ReturnEpilogue();
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#endif
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}
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void *trampoline=tramp.Finish(NULL);
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*outtrampoline=trampoline;
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*origfunc=manager->InsertIntoVTable(vtable,vtid,trampoline);
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};
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