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330fe3b03f
Generate a qemu_plugin_api.lib delay import lib on windows, for windows qemu plugins to link against. Implement an example dll load fail hook to link up the API functions correctly when a plugin is loaded on windows. Update the build scripts for the test and example plugins to use these things. Signed-off-by: Greg Manning <gmanning@rapitasystems.com> Acked-by: Alex Bennée <alex.bennee@linaro.org> Message-Id: <20231102172053.17692-3-gmanning@rapitasystems.com> [AJB: use find_program for dlltool, s/Windows/windows/] Cc: Paolo Bonzini <pbonzini@redhat.com> Signed-off-by: Alex Bennée <alex.bennee@linaro.org> Message-Id: <20231106185112.2755262-15-alex.bennee@linaro.org>
35 lines
1.2 KiB
C
35 lines
1.2 KiB
C
/*
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* Copyright (C) 2023, Greg Manning <gmanning@rapitasystems.com>
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*
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* This hook, __pfnDliFailureHook2, is documented in the microsoft documentation here:
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* https://learn.microsoft.com/en-us/cpp/build/reference/error-handling-and-notification
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* It gets called when a delay-loaded DLL encounters various errors.
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* We handle the specific case of a DLL looking for a "qemu.exe",
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* and give it the running executable (regardless of what it is named).
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*
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* This work is licensed under the terms of the GNU LGPL, version 2 or later.
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* See the COPYING.LIB file in the top-level directory.
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*/
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#include <windows.h>
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#include <delayimp.h>
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FARPROC WINAPI dll_failure_hook(unsigned dliNotify, PDelayLoadInfo pdli);
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PfnDliHook __pfnDliFailureHook2 = dll_failure_hook;
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FARPROC WINAPI dll_failure_hook(unsigned dliNotify, PDelayLoadInfo pdli) {
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if (dliNotify == dliFailLoadLib) {
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/* If the failing request was for qemu.exe, ... */
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if (strcmp(pdli->szDll, "qemu.exe") == 0) {
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/* Then pass back a pointer to the top level module. */
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HMODULE top = GetModuleHandle(NULL);
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return (FARPROC) top;
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}
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}
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/* Otherwise we can't do anything special. */
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return 0;
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}
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