mirror of
https://git.code.sf.net/p/quake/quakeforge
synced 2024-11-27 14:42:07 +00:00
389 lines
9.4 KiB
ArmAsm
389 lines
9.4 KiB
ArmAsm
/*
|
|
math.S
|
|
|
|
x86 assembly-language math routines.
|
|
|
|
Copyright (C) 1996-1997 Id Software, Inc.
|
|
|
|
This program 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.
|
|
|
|
This program 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 this program; if not, write to:
|
|
|
|
Free Software Foundation, Inc.
|
|
59 Temple Place - Suite 330
|
|
Boston, MA 02111-1307, USA
|
|
|
|
$Id$
|
|
*/
|
|
|
|
#ifdef HAVE_CONFIG_H
|
|
# include <config.h>
|
|
#endif
|
|
#include "QF/asm_i386.h"
|
|
// #include "quakeasm.h"
|
|
|
|
|
|
#ifdef USE_INTEL_ASM
|
|
|
|
.data
|
|
|
|
.align 4
|
|
Ljmptab: .long Lcase0, Lcase1, Lcase2, Lcase3
|
|
.long Lcase4, Lcase5, Lcase6, Lcase7
|
|
|
|
.text
|
|
|
|
.extern C(BOPS_Error)
|
|
|
|
#ifdef PIC
|
|
#define EMINS 8+4
|
|
#define EMAXS 8+8
|
|
#define P 8+12
|
|
#else
|
|
#define EMINS 4+4
|
|
#define EMAXS 4+8
|
|
#define P 4+12
|
|
#endif
|
|
|
|
.align 2
|
|
.globl C(BoxOnPlaneSide)
|
|
#ifdef PIC
|
|
.type C(BoxOnPlaneSide),@function
|
|
#endif
|
|
C(BoxOnPlaneSide):
|
|
pushl %ebx
|
|
#ifdef PIC
|
|
pushl %esi
|
|
call .Lpic
|
|
.Lpic:
|
|
popl %esi
|
|
addl $_GLOBAL_OFFSET_TABLE_+[.-.Lpic],%esi
|
|
#endif
|
|
|
|
|
|
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]
|
|
#ifdef PIC
|
|
jmp *Ljmptab@GOTOFF(%esi,%eax,4)
|
|
#else
|
|
jmp *Ljmptab(,%eax,4)
|
|
#endif
|
|
|
|
|
|
//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;
|
|
|
|
#ifdef PIC
|
|
popl %esi
|
|
#endif
|
|
popl %ebx
|
|
movl %ecx,%eax // return status
|
|
|
|
ret
|
|
|
|
|
|
Lerror:
|
|
#ifdef PIC
|
|
call C(BOPS_Error)@PLT
|
|
.Lfe1:
|
|
.size C(BoxOnPlaneSide),.Lfe1-C(BoxOnPlaneSide)
|
|
#else
|
|
call C(BOPS_Error)
|
|
#endif
|
|
|
|
#endif // USE_INTEL_ASM
|