mirror of
https://github.com/UberGames/lilium-voyager.git
synced 2024-12-13 13:40:56 +00:00
425 lines
12 KiB
ArmAsm
Executable file
425 lines
12 KiB
ArmAsm
Executable file
/*
|
|
===========================================================================
|
|
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
|
|
===========================================================================
|
|
*/
|
|
//
|
|
// math.s
|
|
// x86 assembly-language math routines.
|
|
|
|
#define GLQUAKE 1 // don't include unneeded defs
|
|
#include "qasm.h"
|
|
|
|
|
|
#if id386
|
|
|
|
.data
|
|
|
|
.align 4
|
|
Ljmptab: .long Lcase0, Lcase1, Lcase2, Lcase3
|
|
.long Lcase4, Lcase5, Lcase6, Lcase7
|
|
|
|
.text
|
|
|
|
// TODO: rounding needed?
|
|
// stack parameter offset
|
|
#define val 4
|
|
|
|
.globl C(Invert24To16)
|
|
C(Invert24To16):
|
|
|
|
movl val(%esp),%ecx
|
|
movl $0x100,%edx // 0x10000000000 as dividend
|
|
cmpl %edx,%ecx
|
|
jle LOutOfRange
|
|
|
|
subl %eax,%eax
|
|
divl %ecx
|
|
|
|
ret
|
|
|
|
LOutOfRange:
|
|
movl $0xFFFFFFFF,%eax
|
|
ret
|
|
|
|
#if 0
|
|
|
|
#define in 4
|
|
#define out 8
|
|
|
|
.align 2
|
|
.globl C(TransformVector)
|
|
C(TransformVector):
|
|
movl in(%esp),%eax
|
|
movl out(%esp),%edx
|
|
|
|
flds (%eax) // in[0]
|
|
fmuls C(vright) // in[0]*vright[0]
|
|
flds (%eax) // in[0] | in[0]*vright[0]
|
|
fmuls C(vup) // in[0]*vup[0] | in[0]*vright[0]
|
|
flds (%eax) // in[0] | in[0]*vup[0] | in[0]*vright[0]
|
|
fmuls C(vpn) // in[0]*vpn[0] | in[0]*vup[0] | in[0]*vright[0]
|
|
|
|
flds 4(%eax) // in[1] | ...
|
|
fmuls C(vright)+4 // in[1]*vright[1] | ...
|
|
flds 4(%eax) // in[1] | in[1]*vright[1] | ...
|
|
fmuls C(vup)+4 // in[1]*vup[1] | in[1]*vright[1] | ...
|
|
flds 4(%eax) // in[1] | in[1]*vup[1] | in[1]*vright[1] | ...
|
|
fmuls C(vpn)+4 // in[1]*vpn[1] | in[1]*vup[1] | in[1]*vright[1] | ...
|
|
fxch %st(2) // in[1]*vright[1] | in[1]*vup[1] | in[1]*vpn[1] | ...
|
|
|
|
faddp %st(0),%st(5) // in[1]*vup[1] | in[1]*vpn[1] | ...
|
|
faddp %st(0),%st(3) // in[1]*vpn[1] | ...
|
|
faddp %st(0),%st(1) // vpn_accum | vup_accum | vright_accum
|
|
|
|
flds 8(%eax) // in[2] | ...
|
|
fmuls C(vright)+8 // in[2]*vright[2] | ...
|
|
flds 8(%eax) // in[2] | in[2]*vright[2] | ...
|
|
fmuls C(vup)+8 // in[2]*vup[2] | in[2]*vright[2] | ...
|
|
flds 8(%eax) // in[2] | in[2]*vup[2] | in[2]*vright[2] | ...
|
|
fmuls C(vpn)+8 // in[2]*vpn[2] | in[2]*vup[2] | in[2]*vright[2] | ...
|
|
fxch %st(2) // in[2]*vright[2] | in[2]*vup[2] | in[2]*vpn[2] | ...
|
|
|
|
faddp %st(0),%st(5) // in[2]*vup[2] | in[2]*vpn[2] | ...
|
|
faddp %st(0),%st(3) // in[2]*vpn[2] | ...
|
|
faddp %st(0),%st(1) // vpn_accum | vup_accum | vright_accum
|
|
|
|
fstps 8(%edx) // out[2]
|
|
fstps 4(%edx) // out[1]
|
|
fstps (%edx) // out[0]
|
|
|
|
ret
|
|
|
|
#endif
|
|
|
|
#define EMINS 4+4
|
|
#define EMAXS 4+8
|
|
#define P 4+12
|
|
|
|
.align 2
|
|
.globl C(BoxOnPlaneSide)
|
|
C(BoxOnPlaneSide):
|
|
pushl %ebx
|
|
|
|
movl P(%esp),%edx
|
|
movl EMINS(%esp),%ecx
|
|
xorl %eax,%eax
|
|
movl EMAXS(%esp),%ebx
|
|
movb pl_signbits(%edx),%al
|
|
cmpb $8,%al
|
|
jge Lerror
|
|
flds pl_normal(%edx) // p->normal[0]
|
|
fld %st(0) // p->normal[0] | p->normal[0]
|
|
// bk000422 - warning: missing prefix `*' in absolute indirect address, maybe misassembled!
|
|
// bk001129 - fix from Andrew Henderson, was: Ljmptab(,%eax,4)
|
|
jmp *Ljmptab(,%eax,4)
|
|
|
|
|
|
//dist1= p->normal[0]*emaxs[0] + p->normal[1]*emaxs[1] + p->normal[2]*emaxs[2];
|
|
//dist2= p->normal[0]*emins[0] + p->normal[1]*emins[1] + p->normal[2]*emins[2];
|
|
Lcase0:
|
|
fmuls (%ebx) // p->normal[0]*emaxs[0] | p->normal[0]
|
|
flds pl_normal+4(%edx) // p->normal[1] | p->normal[0]*emaxs[0] |
|
|
// p->normal[0]
|
|
fxch %st(2) // p->normal[0] | p->normal[0]*emaxs[0] |
|
|
// p->normal[1]
|
|
fmuls (%ecx) // p->normal[0]*emins[0] |
|
|
// p->normal[0]*emaxs[0] | p->normal[1]
|
|
fxch %st(2) // p->normal[1] | p->normal[0]*emaxs[0] |
|
|
// p->normal[0]*emins[0]
|
|
fld %st(0) // p->normal[1] | p->normal[1] |
|
|
// p->normal[0]*emaxs[0] |
|
|
// p->normal[0]*emins[0]
|
|
fmuls 4(%ebx) // p->normal[1]*emaxs[1] | p->normal[1] |
|
|
// p->normal[0]*emaxs[0] |
|
|
// p->normal[0]*emins[0]
|
|
flds pl_normal+8(%edx) // p->normal[2] | p->normal[1]*emaxs[1] |
|
|
// p->normal[1] | p->normal[0]*emaxs[0] |
|
|
// p->normal[0]*emins[0]
|
|
fxch %st(2) // p->normal[1] | p->normal[1]*emaxs[1] |
|
|
// p->normal[2] | p->normal[0]*emaxs[0] |
|
|
// p->normal[0]*emins[0]
|
|
fmuls 4(%ecx) // p->normal[1]*emins[1] |
|
|
// p->normal[1]*emaxs[1] |
|
|
// p->normal[2] | p->normal[0]*emaxs[0] |
|
|
// p->normal[0]*emins[0]
|
|
fxch %st(2) // p->normal[2] | p->normal[1]*emaxs[1] |
|
|
// p->normal[1]*emins[1] |
|
|
// p->normal[0]*emaxs[0] |
|
|
// p->normal[0]*emins[0]
|
|
fld %st(0) // p->normal[2] | p->normal[2] |
|
|
// p->normal[1]*emaxs[1] |
|
|
// p->normal[1]*emins[1] |
|
|
// p->normal[0]*emaxs[0] |
|
|
// p->normal[0]*emins[0]
|
|
fmuls 8(%ebx) // p->normal[2]*emaxs[2] |
|
|
// p->normal[2] |
|
|
// p->normal[1]*emaxs[1] |
|
|
// p->normal[1]*emins[1] |
|
|
// p->normal[0]*emaxs[0] |
|
|
// p->normal[0]*emins[0]
|
|
fxch %st(5) // p->normal[0]*emins[0] |
|
|
// p->normal[2] |
|
|
// p->normal[1]*emaxs[1] |
|
|
// p->normal[1]*emins[1] |
|
|
// p->normal[0]*emaxs[0] |
|
|
// p->normal[2]*emaxs[2]
|
|
faddp %st(0),%st(3) //p->normal[2] |
|
|
// p->normal[1]*emaxs[1] |
|
|
// p->normal[1]*emins[1]+p->normal[0]*emins[0]|
|
|
// p->normal[0]*emaxs[0] |
|
|
// p->normal[2]*emaxs[2]
|
|
fmuls 8(%ecx) //p->normal[2]*emins[2] |
|
|
// p->normal[1]*emaxs[1] |
|
|
// p->normal[1]*emins[1]+p->normal[0]*emins[0]|
|
|
// p->normal[0]*emaxs[0] |
|
|
// p->normal[2]*emaxs[2]
|
|
fxch %st(1) //p->normal[1]*emaxs[1] |
|
|
// p->normal[2]*emins[2] |
|
|
// p->normal[1]*emins[1]+p->normal[0]*emins[0]|
|
|
// p->normal[0]*emaxs[0] |
|
|
// p->normal[2]*emaxs[2]
|
|
faddp %st(0),%st(3) //p->normal[2]*emins[2] |
|
|
// p->normal[1]*emins[1]+p->normal[0]*emins[0]|
|
|
// p->normal[0]*emaxs[0]+p->normal[1]*emaxs[1]|
|
|
// p->normal[2]*emaxs[2]
|
|
fxch %st(3) //p->normal[2]*emaxs[2] +
|
|
// p->normal[1]*emins[1]+p->normal[0]*emins[0]|
|
|
// p->normal[0]*emaxs[0]+p->normal[1]*emaxs[1]|
|
|
// p->normal[2]*emins[2]
|
|
faddp %st(0),%st(2) //p->normal[1]*emins[1]+p->normal[0]*emins[0]|
|
|
// dist1 | p->normal[2]*emins[2]
|
|
|
|
jmp LSetSides
|
|
|
|
//dist1= p->normal[0]*emins[0] + p->normal[1]*emaxs[1] + p->normal[2]*emaxs[2];
|
|
//dist2= p->normal[0]*emaxs[0] + p->normal[1]*emins[1] + p->normal[2]*emins[2];
|
|
Lcase1:
|
|
fmuls (%ecx) // emins[0]
|
|
flds pl_normal+4(%edx)
|
|
fxch %st(2)
|
|
fmuls (%ebx) // emaxs[0]
|
|
fxch %st(2)
|
|
fld %st(0)
|
|
fmuls 4(%ebx) // emaxs[1]
|
|
flds pl_normal+8(%edx)
|
|
fxch %st(2)
|
|
fmuls 4(%ecx) // emins[1]
|
|
fxch %st(2)
|
|
fld %st(0)
|
|
fmuls 8(%ebx) // emaxs[2]
|
|
fxch %st(5)
|
|
faddp %st(0),%st(3)
|
|
fmuls 8(%ecx) // emins[2]
|
|
fxch %st(1)
|
|
faddp %st(0),%st(3)
|
|
fxch %st(3)
|
|
faddp %st(0),%st(2)
|
|
|
|
jmp LSetSides
|
|
|
|
//dist1= p->normal[0]*emaxs[0] + p->normal[1]*emins[1] + p->normal[2]*emaxs[2];
|
|
//dist2= p->normal[0]*emins[0] + p->normal[1]*emaxs[1] + p->normal[2]*emins[2];
|
|
Lcase2:
|
|
fmuls (%ebx) // emaxs[0]
|
|
flds pl_normal+4(%edx)
|
|
fxch %st(2)
|
|
fmuls (%ecx) // emins[0]
|
|
fxch %st(2)
|
|
fld %st(0)
|
|
fmuls 4(%ecx) // emins[1]
|
|
flds pl_normal+8(%edx)
|
|
fxch %st(2)
|
|
fmuls 4(%ebx) // emaxs[1]
|
|
fxch %st(2)
|
|
fld %st(0)
|
|
fmuls 8(%ebx) // emaxs[2]
|
|
fxch %st(5)
|
|
faddp %st(0),%st(3)
|
|
fmuls 8(%ecx) // emins[2]
|
|
fxch %st(1)
|
|
faddp %st(0),%st(3)
|
|
fxch %st(3)
|
|
faddp %st(0),%st(2)
|
|
|
|
jmp LSetSides
|
|
|
|
//dist1= p->normal[0]*emins[0] + p->normal[1]*emins[1] + p->normal[2]*emaxs[2];
|
|
//dist2= p->normal[0]*emaxs[0] + p->normal[1]*emaxs[1] + p->normal[2]*emins[2];
|
|
Lcase3:
|
|
fmuls (%ecx) // emins[0]
|
|
flds pl_normal+4(%edx)
|
|
fxch %st(2)
|
|
fmuls (%ebx) // emaxs[0]
|
|
fxch %st(2)
|
|
fld %st(0)
|
|
fmuls 4(%ecx) // emins[1]
|
|
flds pl_normal+8(%edx)
|
|
fxch %st(2)
|
|
fmuls 4(%ebx) // emaxs[1]
|
|
fxch %st(2)
|
|
fld %st(0)
|
|
fmuls 8(%ebx) // emaxs[2]
|
|
fxch %st(5)
|
|
faddp %st(0),%st(3)
|
|
fmuls 8(%ecx) // emins[2]
|
|
fxch %st(1)
|
|
faddp %st(0),%st(3)
|
|
fxch %st(3)
|
|
faddp %st(0),%st(2)
|
|
|
|
jmp LSetSides
|
|
|
|
//dist1= p->normal[0]*emaxs[0] + p->normal[1]*emaxs[1] + p->normal[2]*emins[2];
|
|
//dist2= p->normal[0]*emins[0] + p->normal[1]*emins[1] + p->normal[2]*emaxs[2];
|
|
Lcase4:
|
|
fmuls (%ebx) // emaxs[0]
|
|
flds pl_normal+4(%edx)
|
|
fxch %st(2)
|
|
fmuls (%ecx) // emins[0]
|
|
fxch %st(2)
|
|
fld %st(0)
|
|
fmuls 4(%ebx) // emaxs[1]
|
|
flds pl_normal+8(%edx)
|
|
fxch %st(2)
|
|
fmuls 4(%ecx) // emins[1]
|
|
fxch %st(2)
|
|
fld %st(0)
|
|
fmuls 8(%ecx) // emins[2]
|
|
fxch %st(5)
|
|
faddp %st(0),%st(3)
|
|
fmuls 8(%ebx) // emaxs[2]
|
|
fxch %st(1)
|
|
faddp %st(0),%st(3)
|
|
fxch %st(3)
|
|
faddp %st(0),%st(2)
|
|
|
|
jmp LSetSides
|
|
|
|
//dist1= p->normal[0]*emins[0] + p->normal[1]*emaxs[1] + p->normal[2]*emins[2];
|
|
//dist2= p->normal[0]*emaxs[0] + p->normal[1]*emins[1] + p->normal[2]*emaxs[2];
|
|
Lcase5:
|
|
fmuls (%ecx) // emins[0]
|
|
flds pl_normal+4(%edx)
|
|
fxch %st(2)
|
|
fmuls (%ebx) // emaxs[0]
|
|
fxch %st(2)
|
|
fld %st(0)
|
|
fmuls 4(%ebx) // emaxs[1]
|
|
flds pl_normal+8(%edx)
|
|
fxch %st(2)
|
|
fmuls 4(%ecx) // emins[1]
|
|
fxch %st(2)
|
|
fld %st(0)
|
|
fmuls 8(%ecx) // emins[2]
|
|
fxch %st(5)
|
|
faddp %st(0),%st(3)
|
|
fmuls 8(%ebx) // emaxs[2]
|
|
fxch %st(1)
|
|
faddp %st(0),%st(3)
|
|
fxch %st(3)
|
|
faddp %st(0),%st(2)
|
|
|
|
jmp LSetSides
|
|
|
|
//dist1= p->normal[0]*emaxs[0] + p->normal[1]*emins[1] + p->normal[2]*emins[2];
|
|
//dist2= p->normal[0]*emins[0] + p->normal[1]*emaxs[1] + p->normal[2]*emaxs[2];
|
|
Lcase6:
|
|
fmuls (%ebx) // emaxs[0]
|
|
flds pl_normal+4(%edx)
|
|
fxch %st(2)
|
|
fmuls (%ecx) // emins[0]
|
|
fxch %st(2)
|
|
fld %st(0)
|
|
fmuls 4(%ecx) // emins[1]
|
|
flds pl_normal+8(%edx)
|
|
fxch %st(2)
|
|
fmuls 4(%ebx) // emaxs[1]
|
|
fxch %st(2)
|
|
fld %st(0)
|
|
fmuls 8(%ecx) // emins[2]
|
|
fxch %st(5)
|
|
faddp %st(0),%st(3)
|
|
fmuls 8(%ebx) // emaxs[2]
|
|
fxch %st(1)
|
|
faddp %st(0),%st(3)
|
|
fxch %st(3)
|
|
faddp %st(0),%st(2)
|
|
|
|
jmp LSetSides
|
|
|
|
//dist1= p->normal[0]*emins[0] + p->normal[1]*emins[1] + p->normal[2]*emins[2];
|
|
//dist2= p->normal[0]*emaxs[0] + p->normal[1]*emaxs[1] + p->normal[2]*emaxs[2];
|
|
Lcase7:
|
|
fmuls (%ecx) // emins[0]
|
|
flds pl_normal+4(%edx)
|
|
fxch %st(2)
|
|
fmuls (%ebx) // emaxs[0]
|
|
fxch %st(2)
|
|
fld %st(0)
|
|
fmuls 4(%ecx) // emins[1]
|
|
flds pl_normal+8(%edx)
|
|
fxch %st(2)
|
|
fmuls 4(%ebx) // emaxs[1]
|
|
fxch %st(2)
|
|
fld %st(0)
|
|
fmuls 8(%ecx) // emins[2]
|
|
fxch %st(5)
|
|
faddp %st(0),%st(3)
|
|
fmuls 8(%ebx) // emaxs[2]
|
|
fxch %st(1)
|
|
faddp %st(0),%st(3)
|
|
fxch %st(3)
|
|
faddp %st(0),%st(2)
|
|
|
|
LSetSides:
|
|
|
|
// sides = 0;
|
|
// if (dist1 >= p->dist)
|
|
// sides = 1;
|
|
// if (dist2 < p->dist)
|
|
// sides |= 2;
|
|
|
|
faddp %st(0),%st(2) // dist1 | dist2
|
|
fcomps pl_dist(%edx)
|
|
xorl %ecx,%ecx
|
|
fnstsw %ax
|
|
fcomps pl_dist(%edx)
|
|
andb $1,%ah
|
|
xorb $1,%ah
|
|
addb %ah,%cl
|
|
|
|
fnstsw %ax
|
|
andb $1,%ah
|
|
addb %ah,%ah
|
|
addb %ah,%cl
|
|
|
|
// return sides;
|
|
|
|
popl %ebx
|
|
movl %ecx,%eax // return status
|
|
|
|
ret
|
|
|
|
|
|
Lerror:
|
|
movl 1, %eax
|
|
ret
|
|
|
|
#endif // id386
|