1 // bootstrap.cxx -- bootstrap routines: main()
3 // Written by Curtis Olson, started May 1997.
5 // Copyright (C) 1997 - 2002 Curtis L. Olson - curt@flightgear.org
7 // This program is free software; you can redistribute it and/or
8 // modify it under the terms of the GNU General Public License as
9 // published by the Free Software Foundation; either version 2 of the
10 // License, or (at your option) any later version.
12 // This program is distributed in the hope that it will be useful, but
13 // WITHOUT ANY WARRANTY; without even the implied warranty of
14 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
15 // General Public License for more details.
17 // You should have received a copy of the GNU General Public License
18 // along with this program; if not, write to the Free Software
19 // Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
28 #if defined(__linux__) && defined(__i386__)
29 # include <fpu_control.h>
35 #include <simgear/compiler.h>
36 #include <simgear/misc/exception.hxx>
53 # include <console.h> // -dw- for command line dialog
57 #if defined(__linux__) && defined(__i386__)
59 static void handleFPE (int);
64 fpu_control_t fpe_flags = 0;
65 _FPU_GETCW(fpe_flags);
66 // fpe_flags &= ~_FPU_MASK_IM; // invalid operation
67 // fpe_flags &= ~_FPU_MASK_DM; // denormalized operand
68 // fpe_flags &= ~_FPU_MASK_ZM; // zero-divide
69 // fpe_flags &= ~_FPU_MASK_OM; // overflow
70 // fpe_flags &= ~_FPU_MASK_UM; // underflow
71 // fpe_flags &= ~_FPU_MASK_PM; // precision (inexact result)
72 _FPU_SETCW(fpe_flags);
73 signal(SIGFPE, handleFPE);
80 SG_LOG(SG_GENERAL, SG_ALERT, "Floating point interrupt (SIGFPE)");
93 short CPSGetCurrentProcess(PSN *psn);
94 short CPSSetProcessName (PSN *psn, char *processname);
95 short CPSEnableForegroundOperation(PSN *psn, int _arg2, int _arg3, int _arg4, int _arg5);
96 short CPSSetFrontProcess(PSN *psn);
99 #define CPSEnableFG(psn) CPSEnableForegroundOperation(psn,0x03,0x3C,0x2C,0x1103)
103 // Main entry point; catch any exceptions that have made it this far.
104 int main ( int argc, char **argv ) {
106 // Enable floating-point exceptions for Linux/x86
107 #if defined(__linux__) && defined(__i386__)
111 // Enable floating-point exceptions for Windows
112 #if defined( _MSC_VER ) && defined( DEBUG )
113 // Christian, we should document what this does
114 _control87( _EM_INEXACT, _MCW_EM );
117 #if defined( HAVE_BC5PLUS )
118 _control87(MCW_EM, MCW_EM); /* defined in float.h */
121 // Keyboard focus hack
126 glutInit (&argc, argv);
128 CPSGetCurrentProcess(&psn);
129 CPSSetProcessName(&psn, "FlightGear");
131 CPSSetFrontProcess(&psn);
135 // FIXME: add other, more specific
138 fgMainInit(argc, argv);
139 } catch (sg_throwable &t) {
140 // We must use cerr rather than
141 // logging, since logging may be
143 cerr << "Fatal error: " << t.getFormattedMessage()
144 << "\n (received from " << t.getOrigin() << ')' << endl;