/* $XConsortium: fLineH.s,v 1.3 94/10/13 13:16:19 kaleb Exp $ */ /* $XFree86: xc/programs/Xserver/hw/xfree86/vga256/enhanced/fLineH.s,v 3.4 1995/01/28 17:09:38 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)