mirror of
https://git.code.sf.net/p/quake/quakeforge-old
synced 2024-11-14 08:20:57 +00:00
c3f5581b0a
Unchained, Ultimate, Ultra, Up Yours, Underworld, Underground, Unified, Unity, etc. You know the drill. This takes care of the "standalone" problem with the wrong name, and the recent snafu with multiple developers working on the same files simultaneously...expect me (and probably others) to start locking dirs when updates are taking place. And yes, this update is really as large as it looks. Software only at the moment, but I will have the makefile updated to build the GL builds as well.
144 lines
2.9 KiB
ArmAsm
144 lines
2.9 KiB
ArmAsm
/*
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Copyright (C) 1996-1997 Id Software, Inc.
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This program is free software; you can redistribute it and/or
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modify it under the terms of the GNU General Public License
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as published by the Free Software Foundation; either version 2
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of the License, or (at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
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See the GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software
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Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
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*/
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//
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// worlda.s
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// x86 assembly-language server testing stuff
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//
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#define GLQUAKE 1 // don't include unneeded defs
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#include "asm_i386.h"
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#include "quakeasm.h"
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#include "d_ifacea.h"
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#if id386
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.data
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Ltemp: .long 0
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.text
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//----------------------------------------------------------------------
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// hull-point test
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//----------------------------------------------------------------------
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#define hull 4+8 // because only partially pushed
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#define num 8+4 // because only partially pushed
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#define p 12+12 // because only partially pushed
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.align 4
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.globl C(SV_HullPointContents)
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C(SV_HullPointContents):
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pushl %edi // preserve register variables
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movl num(%esp),%eax
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testl %eax,%eax
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js Lhquickout
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// float d;
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// dclipnode_t *node;
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// mplane_t *plane;
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pushl %ebx
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movl hull(%esp),%ebx
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pushl %ebp
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movl p(%esp),%edx
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movl hu_clipnodes(%ebx),%edi
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movl hu_planes(%ebx),%ebp
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subl %ebx,%ebx
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pushl %esi
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// %ebx: 0
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// %eax: num
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// %edx: p
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// %edi: hull->clipnodes
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// %ebp: hull->planes
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// while (num >= 0)
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// {
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Lhloop:
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// node = hull->clipnodes + num;
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// plane = hull->planes + node->planenum;
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// !!! if the size of dclipnode_t changes, the scaling of %eax needs to be
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// changed !!!
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movl nd_planenum(%edi,%eax,8),%ecx
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movl nd_children(%edi,%eax,8),%eax
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movl %eax,%esi
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rorl $16,%eax
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leal (%ecx,%ecx,4),%ecx
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// if (plane->type < 3)
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// d = p[plane->type] - plane->dist;
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movb pl_type(%ebp,%ecx,4),%bl
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cmpb $3,%bl
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jb Lnodot
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// else
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// d = DotProduct (plane->normal, p) - plane->dist;
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flds pl_normal(%ebp,%ecx,4)
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fmuls 0(%edx)
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flds pl_normal+4(%ebp,%ecx,4)
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fmuls 4(%edx)
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flds pl_normal+8(%ebp,%ecx,4)
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fmuls 8(%edx)
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fxch %st(1)
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faddp %st(0),%st(2)
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faddp %st(0),%st(1)
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fsubs pl_dist(%ebp,%ecx,4)
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jmp Lsub
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Lnodot:
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flds pl_dist(%ebp,%ecx,4)
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fsubrs (%edx,%ebx,4)
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Lsub:
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sarl $16,%eax
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sarl $16,%esi
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// if (d < 0)
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// num = node->children[1];
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// else
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// num = node->children[0];
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fstps Ltemp
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movl Ltemp,%ecx
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sarl $31,%ecx
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andl %ecx,%esi
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xorl $0xFFFFFFFF,%ecx
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andl %ecx,%eax
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orl %esi,%eax
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jns Lhloop
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// return num;
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Lhdone:
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popl %esi
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popl %ebp
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popl %ebx // restore register variables
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Lhquickout:
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popl %edi
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ret
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#endif // id386
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