gzdoom/src/__autostart.cpp
alexey.lysiuk d29c6a55eb - fix autoseg registration by moving start/end files back to src directory
Link order was wrong when building via Xcode project because CMake generator sorts files by paths
This made most of classes missing from corresponding segments, and the game crashes right after launch
2020-04-13 10:14:07 +03:00

111 lines
4.7 KiB
C++

/*
** autostart.cpp
** This file contains the heads of lists stored in special data segments
**
**---------------------------------------------------------------------------
** Copyright 1998-2006 Randy Heit
** All rights reserved.
**
** Redistribution and use in source and binary forms, with or without
** modification, are permitted provided that the following conditions
** are met:
**
** 1. Redistributions of source code must retain the above copyright
** notice, this list of conditions and the following disclaimer.
** 2. Redistributions in binary form must reproduce the above copyright
** notice, this list of conditions and the following disclaimer in the
** documentation and/or other materials provided with the distribution.
** 3. The name of the author may not be used to endorse or promote products
** derived from this software without specific prior written permission.
**
** THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
** IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
** OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
** IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
** INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
** NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
** DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
** THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
** (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
** THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
**---------------------------------------------------------------------------
**
** The particular scheme used here was chosen because it's small.
**
** An alternative that will work with any C++ compiler is to use static
** classes to build these lists at run time. Under Visual C++, doing things
** that way can require a lot of extra space, which is why I'm doing things
** this way.
**
** In the case of PClass lists (section creg), I orginally used the
** constructor to do just that, and the code for that still exists if you
** compile with something other than Visual C++ or GCC.
*/
#include "autosegs.h"
#if defined(_MSC_VER)
// The various reg sections are used to group pointers spread across multiple
// source files into cohesive arrays in the final executable. We don't
// actually care about these sections themselves and merge them all into
// a single section during the final link. (.rdata is the standard section
// for initialized read-only data.)
#pragma comment(linker, "/merge:.areg=.rdata /merge:.creg=.rdata /merge:.freg=.rdata")
#pragma comment(linker, "/merge:.greg=.rdata /merge:.yreg=.rdata")
#pragma section(".areg$a",read)
__declspec(allocate(".areg$a")) void *const ARegHead = 0;
#pragma section(".creg$a",read)
__declspec(allocate(".creg$a")) void *const CRegHead = 0;
#pragma section(".freg$a",read)
__declspec(allocate(".freg$a")) void *const FRegHead = 0;
#pragma section(".greg$a",read)
__declspec(allocate(".greg$a")) void *const GRegHead = 0;
#pragma section(".yreg$a",read)
__declspec(allocate(".yreg$a")) void *const YRegHead = 0;
// We want visual styles support under XP
#if defined _M_IX86
#pragma comment(linker,"/manifestdependency:\"type='win32' name='Microsoft.Windows.Common-Controls' version='6.0.0.0' processorArchitecture='x86' publicKeyToken='6595b64144ccf1df' language='*'\"")
#elif defined _M_IA64
#pragma comment(linker,"/manifestdependency:\"type='win32' name='Microsoft.Windows.Common-Controls' version='6.0.0.0' processorArchitecture='ia64' publicKeyToken='6595b64144ccf1df' language='*'\"")
#elif defined _M_X64
#pragma comment(linker,"/manifestdependency:\"type='win32' name='Microsoft.Windows.Common-Controls' version='6.0.0.0' processorArchitecture='amd64' publicKeyToken='6595b64144ccf1df' language='*'\"")
#else
#pragma comment(linker,"/manifestdependency:\"type='win32' name='Microsoft.Windows.Common-Controls' version='6.0.0.0' processorArchitecture='*' publicKeyToken='6595b64144ccf1df' language='*'\"")
#endif
#elif defined(__GNUC__)
#include "doomtype.h"
// I don't know of an easy way to merge sections together with the GNU linker,
// so GCC users will see all of these sections appear in the final executable.
// (There are linker scripts, but that apparently involves extracting the
// default script from ld and then modifying it.)
void *const ARegHead __attribute__((section(SECTION_AREG))) = 0;
void *const CRegHead __attribute__((section(SECTION_CREG))) = 0;
void *const FRegHead __attribute__((section(SECTION_FREG))) = 0;
void *const GRegHead __attribute__((section(SECTION_GREG))) = 0;
void *const YRegHead __attribute__((section(SECTION_YREG))) = 0;
#else
#error Please fix autostart.cpp for your compiler
#endif