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|
/* $XConsortium: fLineH.s,v 1.1 94/10/05 13:50:07 kaleb Exp $ */
/* $XFree86: xc/programs/Xserver/hw/xfree86/vga256/enhanced/fLineH.s,v 3.2 1994/09/21 10:59:43 dawes Exp $ */
/* Copyright 1992 by James Tsillas, Arlignton, Massachusetts.
All Rights Reserved
Permission to use, copy, modify, and distribute this software and its
documentation for any purpose and without fee is hereby granted,
provided that the above copyright notice appear in all copies and that
both that copyright notice and this permission notice appear in
supporting documentation.
JAMES TSILLAS DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE,
INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO
EVENT SHALL DIGITAL BE LIABLE FOR ANY SPECIAL, INDIRECT OR
CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF
USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR
OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
PERFORMANCE OF THIS SOFTWARE.
*/
#include "assyntax.h"
#include "vgaAsm.h"
FILE("fLineH.s")
AS_BEGIN
#define rop REGOFF(8,EBP)
#define andv EBX
#define andvb BL
#define andvw BX
#define xorv EDX
#define xorvb DL
#define xorvw DX
#define addrl EDI
#define nlwidth REGOFF(24,EBP)
#define x1 REGOFF(28,EBP)
#define y1 REGOFF(32,EBP)
#define len ESI
#define count ECX
#define tmp EAX
#define GXcopy CONST(3)
#define GXxor CONST(6)
SEG_TEXT
ALIGNTEXT4
GLOBL GLNAME(fastvga256HorzS)
GLNAME(fastvga256HorzS):
PUSH_L (EBP)
MOV_L (ESP,EBP)
PUSH_L (ESI)
PUSH_L (EDI)
PUSH_L (EBX)
MOV_L (REGOFF(16,EBP),xorv)
MOV_L (REGOFF(20,EBP),addrl)
MOV_L (REGOFF(36,EBP),len)
CLD
MOV_L (nlwidth,tmp)
SHL_L (CONST(2),tmp)
IMUL_L (y1,tmp)
ADD_L (x1,tmp)
ADD_L (tmp,addrl)
CMP_L (VGABASE,addrl)
JB (.noClongL)
PUSH_L (addrl)
CALL (GLNAME(vgaSetReadWrite))
MOV_L (tmp,addrl)
ADD_L (CONST(4),ESP)
MOV_L (CONTENT(GLNAME(vgaWriteTop)),tmp)
SUB_L (addrl,tmp)
CMP_L (len,tmp)
JAE (.noClongL)
.ClongL:
CMP_L (GXcopy,rop)
JNE (.XlongL)
CMP_L (CONST(2),len)
JE (.L14)
JB (.L15)
.L13: TEST_L (CONST(3),addrl)
JZ (.L8)
MOV_B (xorvb,REGIND(addrl))
INC_L (addrl)
DEC_L (len)
.L14: TEST_L (CONST(3),addrl)
JZ (.L8A)
MOV_B (xorvb,REGIND(addrl))
INC_L (addrl)
DEC_L (len)
.L15: TEST_L (CONST(3),addrl)
JZ (.L8A)
MOV_B (xorvb,REGIND(addrl))
INC_L (addrl)
DEC_L (len)
.L8A: CMP_L (CONTENT(GLNAME(vgaWriteTop)),addrl)
JB (.L8)
PUSH_L (addrl)
CALL (GLNAME(vgaWriteNext))
MOV_L (tmp,addrl)
ADD_L (CONST(4),ESP)
.L8: MOV_L (len,count)
AND_L (CONST(0xfffffffc),count)
MOV_L (CONTENT(GLNAME(vgaWriteTop)),tmp)
SUB_L (addrl,tmp)
CMP_L (tmp,count)
JBE (.L16)
MOV_L (tmp,count)
.L16: SUB_L (count,len)
SHR_L (CONST(2),count)
JZ (.L10)
MOV_L (xorv,tmp)
REPZ
STOS_L
CMP_L (CONST(3),len)
JBE (.L17)
PUSH_L (addrl)
CALL (GLNAME(vgaWriteNext))
MOV_L (tmp,addrl)
ADD_L (CONST(4),ESP)
MOV_L (len,count)
AND_L (CONST(0xfffffffc),count)
SUB_L (count,len)
SHR_L (CONST(2),count)
MOV_L (xorv,tmp)
REPZ
STOS_L
.L17: CMP_L (CONTENT(GLNAME(vgaWriteTop)),addrl)
JB (.L10)
PUSH_L (addrl)
CALL (GLNAME(vgaWriteNext))
MOV_L (tmp,addrl)
ADD_L (CONST(4),ESP)
.L10: CMP_L (CONST(2),len)
JA (.L11)
JE (.L12)
CMP_L (CONST(0),len)
JE (.allfinish)
MOV_B (xorvb,REGIND(addrl))
JMP (.allfinish)
.L11: MOV_W (xorvw,REGIND(addrl))
MOV_B (xorvb,REGOFF(2,addrl)) /**/
JMP (.allfinish)
.L12: MOV_W (xorvw,REGIND(addrl)) /**/
.allfinish:
POP_L (EBX)
POP_L (EDI)
POP_L (ESI)
LEAVE
RET
.XlongL:
MOV_L (REGOFF(12,EBP),andv)
CMP_L (GXxor,rop)
JNE (.SlongL)
CMP_L (CONST(2),len)
JE (.LX14)
JB (.LX15)
.LX13: TEST_L (CONST(3),addrl)
JZ (.LX8)
XOR_B (xorvb,REGIND(addrl)) /**/
INC_L (addrl)
DEC_L (len)
.LX14: TEST_L (CONST(3),addrl)
JZ (.LX8A)
XOR_B (xorvb,REGIND(addrl)) /**/
INC_L (addrl)
DEC_L (len)
.LX15: TEST_L (CONST(3),addrl)
JZ (.LX8A)
XOR_B (xorvb,REGIND(addrl)) /**/
INC_L (addrl)
DEC_L (len)
.LX8A: CMP_L (CONTENT(GLNAME(vgaWriteTop)),addrl)
JB (.LX8)
PUSH_L (addrl)
CALL (GLNAME(vgaReadWriteNext))
MOV_L (tmp,addrl)
ADD_L (CONST(4),ESP)
.LX8: MOV_L (len,count)
AND_L (CONST(0xfffffffc),count)
MOV_L (CONTENT(GLNAME(vgaWriteTop)),tmp)
SUB_L (addrl,tmp)
CMP_L (tmp,count)
JBE (.LX16)
MOV_L (tmp,count)
.LX16: SUB_L (count,len)
SHR_L (CONST(2),count)
JZ (.LX10)
.LX9: XOR_L (xorv,REGIND(addrl)) /**/
ADD_L (CONST(4),addrl)
DEC_L (ECX)
JNZ (.LX9)
CMP_L (CONST(3),len)
JBE (.LX17)
PUSH_L (addrl)
CALL (GLNAME(vgaReadWriteNext))
MOV_L (tmp,addrl)
ADD_L (CONST(4),ESP)
MOV_L (len,count)
AND_L (CONST(0xfffffffc),count)
SUB_L (count,len)
SHR_L (CONST(2),count)
.LX18: XOR_L (xorv,REGIND(addrl)) /**/
ADD_L (CONST(4),addrl)
DEC_L (ECX)
JNZ (.LX18)
.LX17: CMP_L (CONTENT(GLNAME(vgaWriteTop)),addrl)
JB (.LX10)
PUSH_L (addrl)
CALL (GLNAME(vgaReadWriteNext))
MOV_L (tmp,addrl)
ADD_L (CONST(4),ESP)
.LX10: CMP_L (CONST(2),len)
JA (.LX11)
JE (.LX12)
CMP_L (CONST(0),len)
JE (.allfinish)
XOR_B (xorvb,REGIND(addrl)) /**/
JMP (.allfinish)
.LX11: XOR_W (xorvw,REGIND(addrl)) /**/
XOR_B (xorvb,REGOFF(2,addrl)) /**/
JMP (.allfinish)
.LX12: XOR_W (xorvw,REGIND(addrl)) /**/
JMP (.allfinish)
.SlongL:
CMP_L (CONST(2),len)
JE (.LS14)
JB (.LS15)
.LS13: TEST_L (CONST(3),addrl)
JZ (.LS8)
MOV_B (REGIND(addrl),AL)
AND_B (andvb,AL)
XOR_B (xorvb,AL) /**/
STOS_B
DEC_L (len)
.LS14: TEST_L (CONST(3),addrl)
JZ (.LS8A)
MOV_B (REGIND(addrl),AL)
AND_B (andvb,AL)
XOR_B (xorvb,AL) /**/
STOS_B
DEC_L (len)
.LS15: TEST_L (CONST(3),addrl)
JZ (.LS8A)
MOV_B (REGIND(addrl),AL)
AND_B (andvb,AL)
XOR_B (xorvb,AL) /**/
STOS_B
DEC_L (len)
.LS8A: CMP_L (CONTENT(GLNAME(vgaWriteTop)),addrl)
JB (.LS8)
PUSH_L (addrl)
CALL (GLNAME(vgaReadWriteNext))
MOV_L (tmp,addrl)
ADD_L (CONST(4),ESP)
.LS8: MOV_L (len,count)
AND_L (CONST(0xfffffffc),count)
MOV_L (CONTENT(GLNAME(vgaWriteTop)),tmp)
SUB_L (addrl,tmp)
CMP_L (tmp,count)
JBE (.LS16)
MOV_L (tmp,count)
.LS16: SUB_L (count,len)
SHR_L (CONST(2),count)
JZ (.LS10)
.LS9: MOV_L (REGIND(addrl),tmp)
AND_L (andv,tmp)
XOR_L (xorv,tmp) /**/
STOS_L
DEC_L (ECX)
JNZ (.LS9)
CMP_L (CONST(3),len)
JBE (.LS17)
PUSH_L (addrl)
CALL (GLNAME(vgaReadWriteNext))
MOV_L (tmp,addrl)
ADD_L (CONST(4),ESP)
MOV_L (len,count)
AND_L (CONST(0xfffffffc),count)
SUB_L (count,len)
SHR_L (CONST(2),count)
.LS18: MOV_L (REGIND(addrl),tmp)
AND_L (andv,tmp)
XOR_L (xorv,tmp) /**/
STOS_L
DEC_L (ECX)
JNZ (.LS18)
.LS17: CMP_L (CONTENT(GLNAME(vgaWriteTop)),addrl)
JB (.LS10)
PUSH_L (addrl)
CALL (GLNAME(vgaReadWriteNext))
MOV_L (tmp,addrl)
ADD_L (CONST(4),ESP)
.LS10: CMP_L (CONST(2),len)
JA (.LS11)
JE (.LS12)
CMP_L (CONST(0),len)
JE (.allfinish)
MOV_B (REGIND(addrl),AL)
AND_B (andvb,AL)
XOR_B (xorvb,AL) /**/
MOV_B (AL,REGIND(addrl))
JMP (.allfinish)
.LS11: MOV_W (REGIND(addrl),AX)
AND_W (andvw,AX)
XOR_W (xorvw,AX) /**/
STOS_W
MOV_B (REGIND(addrl),AL)
AND_B (andvb,AL)
XOR_B (xorvb,AL) /**/
MOV_B (AL,REGIND(addrl))
JMP (.allfinish)
.LS12: MOV_W (REGIND(addrl),AX)
AND_W (andvw,AX)
XOR_W (xorvw,AX) /**/
MOV_W (AX,REGIND(addrl))
JMP (.allfinish)
.noClongL:
CMP_L (GXcopy,rop)
JNE (.noXlongL)
CMP_L (CONST(2),len)
JE (.LC6)
JB (.LC7)
.LC5: TEST_L (CONST(3),addrl)
JZ (.LC0)
MOV_B (xorvb,REGIND(addrl))
INC_L (addrl)
DEC_L (len)
.LC6: TEST_L (CONST(3),addrl)
JZ (.LC0)
MOV_B (xorvb,REGIND(addrl))
INC_L (addrl)
DEC_L (len)
.LC7: TEST_L (CONST(3),addrl)
JZ (.LC0)
MOV_B (xorvb,REGIND(addrl))
INC_L (addrl)
DEC_L (len)
.LC0: MOV_L (len,count)
AND_L (CONST(0xfffffffc),count)
SUB_L (count,len)
SHR_L (CONST(2),count)
JZ (.LC2)
MOV_L (xorv,tmp)
CLD
REPZ
STOS_L
.LC2: CMP_L (CONST(2),len)
JA (.LC3)
JE (.LC4)
CMP_L (CONST(0),len)
JE (.allfinish)
MOV_B (xorvb,REGIND(addrl)) /**/
JMP (.allfinish)
.LC3: MOV_W (xorvw,REGIND(addrl)) /**/
MOV_B (xorvb,REGOFF(2,addrl)) /**/
JMP (.allfinish)
.LC4: MOV_W (xorvw,REGIND(addrl)) /**/
JMP (.allfinish)
.noXlongL:
MOV_L (REGOFF(12,EBP),andv)
CMP_L (GXxor,rop)
JNE (.noSlongL)
CMP_L (CONST(2),len)
JE (.LX6)
JB (.LX7)
.LX5: TEST_L (CONST(3),addrl)
JZ (.LX0)
XOR_B (xorvb,REGIND(addrl)) /**/
INC_L (addrl)
DEC_L (len)
.LX6: TEST_L (CONST(3),addrl)
JZ (.LX0)
XOR_B (xorvb,REGIND(addrl)) /**/
INC_L (addrl)
DEC_L (len)
.LX7: TEST_L (CONST(3),addrl)
JZ (.LX0)
XOR_B (xorvb,REGIND(addrl)) /**/
INC_L (addrl)
DEC_L (len)
.LX0: MOV_L (len,count)
AND_L (CONST(0xfffffffc),count)
SUB_L (count,len)
SHR_L (CONST(2),count)
JZ (.LX2)
.LX1: XOR_L (xorv,REGIND(addrl)) /**/
ADD_L (CONST(4),addrl)
DEC_L (ECX)
JNZ (.LX1)
.LX2: CMP_L (CONST(2),len)
JA (.LX3)
JE (.LX4)
CMP_L (CONST(0),len)
JE (.allfinish)
XOR_B (xorvb,REGIND(addrl)) /**/
JMP (.allfinish)
.LX3: XOR_W (xorvw,REGIND(addrl)) /**/
XOR_B (xorvb,REGOFF(2,addrl)) /**/
JMP (.allfinish)
.LX4: XOR_W (xorvw,REGIND(addrl)) /**/
JMP (.allfinish)
.noSlongL:
CMP_L (CONST(2),len)
JE (.LS6)
JB (.LS7)
.LS5: TEST_L (CONST(3),addrl)
JZ (.LS0)
MOV_B (REGIND(addrl),AL)
AND_B (andvb,AL)
XOR_B (xorvb,AL) /**/
STOS_B
DEC_L (len)
.LS6: TEST_L (CONST(3),addrl)
JZ (.LS0)
MOV_B (REGIND(addrl),AL)
AND_B (andvb,AL)
XOR_B (xorvb,AL) /**/
STOS_B
DEC_L (len)
.LS7: TEST_L (CONST(3),addrl)
JZ (.LS0)
MOV_B (REGIND(addrl),AL)
AND_B (andvb,AL)
XOR_B (xorvb,AL) /**/
STOS_B
DEC_L (len)
.LS0: MOV_L (len,count)
AND_L (CONST(0xfffffffc),count)
SUB_L (count,len)
SHR_L (CONST(2),count)
JZ (.LS2)
.LS1: MOV_L (REGIND(addrl),tmp)
AND_L (andv,tmp)
XOR_L (xorv,tmp) /**/
STOS_L
DEC_L (ECX)
JNZ (.LS1)
.LS2: CMP_L (CONST(2),len)
JA (.LS3)
JE (.LS4)
CMP_L (CONST(0),len)
JE (.allfinish)
MOV_B (REGIND(addrl),AL)
AND_B (andvb,AL)
XOR_B (xorvb,AL) /**/
MOV_B (AL,REGIND(addrl))
JMP (.allfinish)
.LS3: MOV_W (REGIND(addrl),AX)
AND_W (andvw,AX)
XOR_W (xorvw,AX) /**/
STOS_W
MOV_B (REGIND(addrl),AL)
AND_B (andvb,AL)
XOR_B (xorvb,AL) /**/
MOV_B (AL,REGIND(addrl))
JMP (.allfinish)
.LS4: MOV_W (REGIND(addrl),AX)
AND_W (andvw,AX)
XOR_W (xorvw,AX) /**/
MOV_W (AX,REGIND(addrl))
JMP (.allfinish)
|
