mirror of
https://github.com/ZDoom/raze-gles.git
synced 2024-12-27 04:00:42 +00:00
76 lines
3.1 KiB
C++
76 lines
3.1 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:.creg=.rdata")
|
||
|
|
|
||
|
|
#pragma section(".creg$a",read)
|
||
|
|
__declspec(allocate(".creg$a")) void *const CRegHead = 0;
|
||
|
|
|
||
|
|
#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 CRegHead __attribute__((section(SECTION_CREG))) = 0;
|
||
|
|
|
||
|
|
#else
|
||
|
|
|
||
|
|
#error Please fix autostart.cpp for your compiler
|
||
|
|
|
||
|
|
#endif
|