* Branch upstream ioq3-r437 into trunk

1 files changed, 160 insertions, 0 deletions

diff --git a/ioq3-r437/src/unix/ftola.s b/ioq3-r437/src/unix/ftola.s
new file mode 100644
index 00000000..e4b48399
--- /dev/null
+++ b/ioq3-r437/src/unix/ftola.s
@@ -0,0 +1,160 @@
+/*
+===========================================================================
+Copyright (C) 1999-2005 Id Software, Inc.
+
+This file is part of Quake III Arena source code.
+
+Quake III Arena source code is free software; you can redistribute it
+and/or modify it under the terms of the GNU General Public License as
+published by the Free Software Foundation; either version 2 of the License,
+or (at your option) any later version.
+
+Quake III Arena source code is distributed in the hope that it will be
+useful, but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+GNU General Public License for more details.
+
+You should have received a copy of the GNU General Public License
+along with Foobar; if not, write to the Free Software
+Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
+===========================================================================
+*/
+
+//
+// qftol -- fast floating point to long conversion.
+//
+
+// 23/09/05 Ported to gas by intel2gas, best supporting actor Tim Angus
+// <tim@ngus.net>
+
+#include "qasm.h"
+
+#ifdef id386
+
+.data
+
+temp:   .float    0.0
+fpucw:  .long     0
+
+// Precision Control Field , 2 bits / 0x0300
+// PC24 0x0000   Single precision (24 bits).
+// PC53 0x0200   Double precision (53 bits).
+// PC64 0x0300   Extended precision (64 bits).
+
+// Rounding Control Field, 2 bits / 0x0C00
+// RCN  0x0000   Rounding to nearest (even).
+// RCD  0x0400   Rounding down (directed, minus).
+// RCU  0x0800   Rounding up (directed plus).
+// RC0  0x0C00   Rounding towards zero (chop mode).
+
+
+// rounding towards nearest (even)
+cw027F: .long     0x027F
+cw037F: .long     0x037F
+
+// rounding towards zero (chop mode)
+cw0E7F: .long     0x0E7F
+cw0F7F: .long     0x0F7F
+
+
+.text
+
+//
+// int qftol( void ) - default control word
+//
+
+.global C(qftol)
+
+C(qftol):
+        fistpl temp
+        movl temp,%eax
+        ret
+
+
+//
+// int qftol027F( void ) - DirectX FPU
+//
+
+.global C(qftol027F)
+
+C(qftol027F):
+        fnstcw fpucw
+        fldcw  cw027F
+        fistpl temp
+        fldcw  fpucw
+        movl temp,%eax
+        ret
+
+//
+// int qftol037F( void ) - Linux FPU
+//
+
+.global C(qftol037F)
+
+C(qftol037F):
+        fnstcw fpucw
+        fldcw  cw037F
+        fistpl temp
+        fldcw  fpucw
+        movl temp,%eax
+        ret
+
+
+//
+// int qftol0F7F( void ) - ANSI
+//
+
+.global C(qftol0F7F)
+
+C(qftol0F7F):
+        fnstcw fpucw
+        fldcw  cw0F7F
+        fistpl temp
+        fldcw  fpucw
+        movl temp,%eax
+        ret
+
+//
+// int qftol0E7F( void )
+//
+
+.global C(qftol0E7F)
+
+C(qftol0E7F):
+        fnstcw fpucw
+        fldcw  cw0E7F
+        fistpl temp
+        fldcw  fpucw
+        movl temp,%eax
+        ret
+
+
+
+//
+// long Q_ftol( float q )
+//
+
+.global C(Q_ftol)
+
+C(Q_ftol):
+        flds 4(%esp)
+        fistpl temp
+        movl temp,%eax
+        ret
+
+
+//
+// long qftol0F7F( float q ) - Linux FPU
+//
+
+.global C(Q_ftol0F7F)
+
+C(Q_ftol0F7F):
+        fnstcw fpucw
+        flds 4(%esp)
+        fldcw  cw0F7F
+        fistpl temp
+        fldcw  fpucw
+        movl temp,%eax
+        ret
+#endif