mirror of
https://github.com/ZDoom/qzdoom.git
synced 2024-12-01 16:41:09 +00:00
340 lines
8.8 KiB
C++
340 lines
8.8 KiB
C++
/*
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** i_main.cpp
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** System-specific startup code. Eventually calls D_DoomMain.
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**
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**---------------------------------------------------------------------------
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** Copyright 1998-2007 Randy Heit
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** All rights reserved.
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**
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** Redistribution and use in source and binary forms, with or without
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** modification, are permitted provided that the following conditions
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** are met:
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**
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** 1. Redistributions of source code must retain the above copyright
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** notice, this list of conditions and the following disclaimer.
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** 2. Redistributions in binary form must reproduce the above copyright
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** notice, this list of conditions and the following disclaimer in the
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** documentation and/or other materials provided with the distribution.
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** 3. The name of the author may not be used to endorse or promote products
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** derived from this software without specific prior written permission.
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**
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** THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
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** IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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** OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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** IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
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** INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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** NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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** DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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** THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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** (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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** THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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**---------------------------------------------------------------------------
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**
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*/
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// HEADER FILES ------------------------------------------------------------
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#include <SDL.h>
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#include <unistd.h>
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#include <stdlib.h>
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#include <signal.h>
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#include <new>
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#include <sys/param.h>
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#ifndef NO_GTK
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#include <gtk/gtk.h>
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#endif
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#include <locale.h>
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#if defined(__MACH__) && !defined(NOASM)
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#include <sys/types.h>
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#include <sys/mman.h>
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#endif
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#include "doomerrors.h"
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#include "m_argv.h"
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#include "d_main.h"
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#include "i_system.h"
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#include "i_video.h"
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#include "c_console.h"
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#include "errors.h"
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#include "version.h"
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#include "w_wad.h"
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#include "g_level.h"
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#include "r_state.h"
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#include "cmdlib.h"
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#include "r_utility.h"
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#include "doomstat.h"
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// MACROS ------------------------------------------------------------------
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// The maximum number of functions that can be registered with atterm.
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#define MAX_TERMS 64
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// TYPES -------------------------------------------------------------------
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// EXTERNAL FUNCTION PROTOTYPES --------------------------------------------
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extern "C" int cc_install_handlers(int, char**, int, int*, const char*, int(*)(char*, char*));
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// PUBLIC FUNCTION PROTOTYPES ----------------------------------------------
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// PRIVATE FUNCTION PROTOTYPES ---------------------------------------------
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// EXTERNAL DATA DECLARATIONS ----------------------------------------------
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// PUBLIC DATA DEFINITIONS -------------------------------------------------
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#ifndef NO_GTK
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bool GtkAvailable;
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#endif
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// The command line arguments.
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DArgs *Args;
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// PRIVATE DATA DEFINITIONS ------------------------------------------------
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static void (*TermFuncs[MAX_TERMS]) ();
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static const char *TermNames[MAX_TERMS];
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static int NumTerms;
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// CODE --------------------------------------------------------------------
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void addterm (void (*func) (), const char *name)
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{
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// Make sure this function wasn't already registered.
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for (int i = 0; i < NumTerms; ++i)
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{
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if (TermFuncs[i] == func)
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{
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return;
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}
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}
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if (NumTerms == MAX_TERMS)
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{
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func ();
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I_FatalError (
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"Too many exit functions registered.\n"
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"Increase MAX_TERMS in i_main.cpp");
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}
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TermNames[NumTerms] = name;
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TermFuncs[NumTerms++] = func;
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}
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void popterm ()
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{
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if (NumTerms)
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NumTerms--;
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}
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void STACK_ARGS call_terms ()
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{
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while (NumTerms > 0)
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{
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// printf ("term %d - %s\n", NumTerms, TermNames[NumTerms-1]);
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TermFuncs[--NumTerms] ();
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}
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}
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//==========================================================================
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//
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// FinalGC
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//
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// Collect garbage one last time before exiting.
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//
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//==========================================================================
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static void FinalGC()
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{
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Args = NULL;
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GC::FullGC();
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}
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static void STACK_ARGS NewFailure ()
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{
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I_FatalError ("Failed to allocate memory from system heap");
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}
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static int DoomSpecificInfo (char *buffer, char *end)
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{
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const char *arg;
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int size = end-buffer-2;
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int i, p;
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p = 0;
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p += snprintf (buffer+p, size-p, GAMENAME" version " DOTVERSIONSTR " (" __DATE__ ")\n");
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#ifdef __VERSION__
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p += snprintf (buffer+p, size-p, "Compiler version: %s\n", __VERSION__);
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#endif
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p += snprintf (buffer+p, size-p, "\nCommand line:");
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for (i = 0; i < Args->NumArgs(); ++i)
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{
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p += snprintf (buffer+p, size-p, " %s", Args->GetArg(i));
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}
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p += snprintf (buffer+p, size-p, "\n");
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for (i = 0; (arg = Wads.GetWadName (i)) != NULL; ++i)
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{
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p += snprintf (buffer+p, size-p, "\nWad %d: %s", i, arg);
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}
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if (gamestate != GS_LEVEL && gamestate != GS_TITLELEVEL)
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{
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p += snprintf (buffer+p, size-p, "\n\nNot in a level.");
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}
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else
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{
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char name[9];
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strncpy (name, level.mapname, 8);
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name[8] = 0;
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p += snprintf (buffer+p, size-p, "\n\nCurrent map: %s", name);
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if (!viewactive)
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{
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p += snprintf (buffer+p, size-p, "\n\nView not active.");
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}
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else
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{
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p += snprintf (buffer+p, size-p, "\n\nviewx = %d", (int)viewx);
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p += snprintf (buffer+p, size-p, "\nviewy = %d", (int)viewy);
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p += snprintf (buffer+p, size-p, "\nviewz = %d", (int)viewz);
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p += snprintf (buffer+p, size-p, "\nviewangle = %x", (unsigned int)viewangle);
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}
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}
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buffer[p++] = '\n';
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buffer[p++] = '\0';
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return p;
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}
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#if defined(__MACH__) && !defined(NOASM)
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// NASM won't let us create custom sections for Mach-O. Whether that's a limitation of NASM
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// or of Mach-O, I don't know, but since we're using NASM for the assembly, it doesn't much
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// matter.
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extern "C"
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{
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extern void *rtext_a_start, *rtext_a_end;
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extern void *rtext_tmap_start, *rtext_tmap_end;
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extern void *rtext_tmap2_start, *rtext_tmap2_end;
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extern void *rtext_tmap3_start, *rtext_tmap3_end;
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};
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static void unprotect_pages(long pagesize, void *start, void *end)
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{
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char *page = (char *)((intptr_t)start & ~(pagesize - 1));
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size_t len = (char *)end - (char *)start;
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if (mprotect(page, len, PROT_READ|PROT_WRITE|PROT_EXEC) != 0)
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{
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fprintf(stderr, "mprotect failed\n");
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exit(1);
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}
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}
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static void unprotect_rtext()
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{
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static void *const pages[] =
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{
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rtext_a_start, rtext_a_end,
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rtext_tmap_start, rtext_tmap_end,
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rtext_tmap2_start, rtext_tmap2_end,
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rtext_tmap3_start, rtext_tmap3_end
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};
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long pagesize = sysconf(_SC_PAGESIZE);
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for (void *const *p = pages; p < &pages[countof(pages)]; p += 2)
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{
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unprotect_pages(pagesize, p[0], p[1]);
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}
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}
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#endif
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void I_StartupJoysticks();
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void I_ShutdownJoysticks();
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int main (int argc, char **argv)
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{
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{
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int s[4] = { SIGSEGV, SIGILL, SIGFPE, SIGBUS };
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cc_install_handlers(argc, argv, 4, s, "zdoom-crash.log", DoomSpecificInfo);
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}
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printf(GAMENAME" v%s - SVN revision %s - SDL version\nCompiled on %s\n\n",
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DOTVERSIONSTR_NOREV,SVN_REVISION_STRING,__DATE__);
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seteuid (getuid ());
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std::set_new_handler (NewFailure);
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#if defined(__MACH__) && !defined(NOASM)
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unprotect_rtext();
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#endif
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#ifndef NO_GTK
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GtkAvailable = gtk_init_check (&argc, &argv);
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#endif
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setlocale (LC_ALL, "C");
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if (SDL_Init (SDL_INIT_VIDEO|SDL_INIT_TIMER|SDL_INIT_NOPARACHUTE|SDL_INIT_JOYSTICK) == -1)
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{
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fprintf (stderr, "Could not initialize SDL:\n%s\n", SDL_GetError());
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return -1;
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}
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atterm (SDL_Quit);
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SDL_WM_SetCaption (GAMESIG " " DOTVERSIONSTR " (" __DATE__ ")", NULL);
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try
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{
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Args = new DArgs(argc, argv);
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atterm(FinalGC);
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/*
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killough 1/98:
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This fixes some problems with exit handling
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during abnormal situations.
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The old code called I_Quit() to end program,
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while now I_Quit() is installed as an exit
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handler and exit() is called to exit, either
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normally or abnormally. Seg faults are caught
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and the error handler is used, to prevent
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being left in graphics mode or having very
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loud SFX noise because the sound card is
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left in an unstable state.
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*/
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atexit (call_terms);
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atterm (I_Quit);
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// Should we even be doing anything with progdir on Unix systems?
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char program[PATH_MAX];
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if (realpath (argv[0], program) == NULL)
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strcpy (program, argv[0]);
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char *slash = strrchr (program, '/');
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if (slash != NULL)
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{
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*(slash + 1) = '\0';
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progdir = program;
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}
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else
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{
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progdir = "./";
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}
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I_StartupJoysticks();
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C_InitConsole (80*8, 25*8, false);
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D_DoomMain ();
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}
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catch (class CDoomError &error)
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{
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I_ShutdownJoysticks();
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if (error.GetMessage ())
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fprintf (stderr, "%s\n", error.GetMessage ());
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exit (-1);
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}
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catch (...)
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{
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call_terms ();
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throw;
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}
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return 0;
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}
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