mirror of
https://git.code.sf.net/p/quake/quakeforge-old
synced 2024-11-29 07:02:08 +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.
172 lines
3.3 KiB
ArmAsm
172 lines
3.3 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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// surf16.s
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// x86 assembly-language 16 bpp surface block drawing code.
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//
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#include "asm_i386.h"
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#include "quakeasm.h"
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#include "asm_draw.h"
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#if id386
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//----------------------------------------------------------------------
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// Surface block drawer
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//----------------------------------------------------------------------
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.data
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k: .long 0
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loopentry: .long 0
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.align 4
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blockjumptable16:
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.long LEnter2_16
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.long LEnter4_16
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.long 0, LEnter8_16
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.long 0, 0, 0, LEnter16_16
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.text
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.align 4
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.globl C(R_Surf16Start)
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C(R_Surf16Start):
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.align 4
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.globl C(R_DrawSurfaceBlock16)
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C(R_DrawSurfaceBlock16):
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pushl %ebp // preserve caller's stack frame
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pushl %edi
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pushl %esi // preserve register variables
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pushl %ebx
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movl C(blocksize),%eax
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movl C(prowdestbase),%edi
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movl C(pbasesource),%esi
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movl C(sourcesstep),%ebx
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movl blockjumptable16-4(,%eax,2),%ecx
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movl %eax,k
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movl %ecx,loopentry
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movl C(lightleft),%edx
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movl C(lightright),%ebp
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Lblockloop16:
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subl %edx,%ebp
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movb C(blockdivshift),%cl
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sarl %cl,%ebp
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jns Lp1_16
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testl C(blockdivmask),%ebp
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jz Lp1_16
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incl %ebp
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Lp1_16:
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subl %eax,%eax
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subl %ecx,%ecx // high words must be 0 in loop for addressing
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jmp *loopentry
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.align 4
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#include "block16.h"
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movl C(pbasesource),%esi
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movl C(lightleft),%edx
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movl C(lightright),%ebp
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movl C(sourcetstep),%eax
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movl C(lightrightstep),%ecx
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movl C(prowdestbase),%edi
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addl %eax,%esi
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addl %ecx,%ebp
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movl C(lightleftstep),%eax
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movl C(surfrowbytes),%ecx
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addl %eax,%edx
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addl %ecx,%edi
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movl %esi,C(pbasesource)
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movl %ebp,C(lightright)
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movl k,%eax
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movl %edx,C(lightleft)
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decl %eax
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movl %edi,C(prowdestbase)
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movl %eax,k
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jnz Lblockloop16
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popl %ebx // restore register variables
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popl %esi
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popl %edi
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popl %ebp // restore the caller's stack frame
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ret
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.globl C(R_Surf16End)
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C(R_Surf16End):
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//----------------------------------------------------------------------
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// Code patching routines
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//----------------------------------------------------------------------
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.data
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.align 4
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LPatchTable16:
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.long LBPatch0-4
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.long LBPatch1-4
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.long LBPatch2-4
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.long LBPatch3-4
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.long LBPatch4-4
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.long LBPatch5-4
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.long LBPatch6-4
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.long LBPatch7-4
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.long LBPatch8-4
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.long LBPatch9-4
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.long LBPatch10-4
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.long LBPatch11-4
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.long LBPatch12-4
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.long LBPatch13-4
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.long LBPatch14-4
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.long LBPatch15-4
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.text
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.align 4
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.globl C(R_Surf16Patch)
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C(R_Surf16Patch):
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pushl %ebx
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movl C(colormap),%eax
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movl $LPatchTable16,%ebx
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movl $16,%ecx
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LPatchLoop16:
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movl (%ebx),%edx
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addl $4,%ebx
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movl %eax,(%edx)
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decl %ecx
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jnz LPatchLoop16
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popl %ebx
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ret
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#endif // id386
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