/* ** 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:.greg=.rdata") #pragma comment(linker, "/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(".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 GRegHead __attribute__((section(SECTION_GREG))) = 0; void *const YRegHead __attribute__((section(SECTION_YREG))) = 0; #else #error Please fix autostart.cpp for your compiler #endif