mirror of
https://github.com/UberGames/ioef.git
synced 2024-11-24 21:22:00 +00:00
664f8e578d
- replace some whitespace with tabs in snapvector.c - Give gcc a bit more freedom in choice of registers
88 lines
1.8 KiB
C
88 lines
1.8 KiB
C
/*
|
|
===========================================================================
|
|
Copyright (C) 2011 Thilo Schulz <thilo@tjps.eu>
|
|
|
|
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 Quake III Arena source code; if not, write to the Free Software
|
|
Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
|
|
===========================================================================
|
|
*/
|
|
|
|
#include "qasm-inline.h"
|
|
|
|
/*
|
|
* GNU inline asm ftol conversion functions using SSE or FPU
|
|
*/
|
|
|
|
long qftolsse(float f)
|
|
{
|
|
long retval;
|
|
|
|
__asm__ volatile
|
|
(
|
|
"cvttss2si %1, %0\n"
|
|
: "=r" (retval)
|
|
: "x" (f)
|
|
);
|
|
|
|
return retval;
|
|
}
|
|
|
|
int qvmftolsse(void)
|
|
{
|
|
int retval;
|
|
|
|
__asm__ volatile
|
|
(
|
|
"movss (" EDI ", " EBX ", 4), %%xmm0\n"
|
|
"cvttss2si %%xmm0, %0\n"
|
|
: "=r" (retval)
|
|
:
|
|
: "%xmm0"
|
|
);
|
|
|
|
return retval;
|
|
}
|
|
|
|
long qftolx87(float f)
|
|
{
|
|
long retval;
|
|
|
|
__asm__ volatile
|
|
(
|
|
"flds %1\n"
|
|
"fistpl %1\n"
|
|
"mov %1, %0\n"
|
|
: "=r" (retval)
|
|
: "m" (f)
|
|
);
|
|
|
|
return retval;
|
|
}
|
|
|
|
int qvmftolx87(void)
|
|
{
|
|
int retval;
|
|
|
|
__asm__ volatile
|
|
(
|
|
"flds (" EDI ", " EBX ", 4)\n"
|
|
"fistpl (" EDI ", " EBX ", 4)\n"
|
|
"mov (" EDI ", " EBX ", 4), %0\n"
|
|
: "=r" (retval)
|
|
);
|
|
|
|
return retval;
|
|
}
|