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Diffstat (limited to 'src/mesa/drivers/dos/blit.S')
| -rw-r--r-- | src/mesa/drivers/dos/blit.S | 210 |
1 files changed, 210 insertions, 0 deletions
diff --git a/src/mesa/drivers/dos/blit.S b/src/mesa/drivers/dos/blit.S new file mode 100644 index 0000000..d0a5a72 --- /dev/null +++ b/src/mesa/drivers/dos/blit.S @@ -0,0 +1,210 @@ +/* + * Mesa 3-D graphics library + * Version: 4.0 + * + * Copyright (C) 1999 Brian Paul All Rights Reserved. + * + * Permission is hereby granted, free of charge, to any person obtaining a + * copy of this software and associated documentation files (the "Software"), + * to deal in the Software without restriction, including without limitation + * the rights to use, copy, modify, merge, publish, distribute, sublicense, + * and/or sell copies of the Software, and to permit persons to whom the + * Software is furnished to do so, subject to the following conditions: + * + * The above copyright notice and this permission notice shall be included + * in all copies or substantial portions of the Software. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS + * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, + * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL + * BRIAN PAUL BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN + * AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN + * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. + */ + +/* + * DOS/DJGPP device driver v1.4 for Mesa + * + * Copyright (C) 2002 - Borca Daniel + * Email : dborca@yahoo.com + * Web : http://www.geocities.com/dborca + */ + + +#include "x86/assyntax.h" + + + FILE("blit.S") + +/* + * extern unsigned int vesa_gran_mask, vesa_gran_shift; + * extern int vl_video_selector; + + * extern void *vl_current_draw_buffer; + * extern int vl_current_stride, vl_current_height; + * extern int vl_current_offset, vl_current_delta; + */ +EXTERN _vesa_gran_mask, _vesa_gran_shift +EXTERN _vl_video_selector + +EXTERN _vl_current_draw_buffer +EXTERN _vl_current_stride, _vl_current_height +EXTERN _vl_current_offset, _vl_current_delta + + SEG_TEXT + USE32 + +/* Desc: VESA bank switching routine (BIOS) + * + * In : EBX=0, EDX = bank number + * Out : - + * + * Note: thrashes EAX + */ + ALIGNTEXT32 +_vesa_swbankBIOS: + MOV_W (CONST(0x4f05), AX) + INT (CONST(0x10)) + RET + + ALIGNTEXT8 + GLOBL _vesa_swbank +_vesa_swbank: D_LONG _vesa_swbankBIOS + +/* Desc: void vesa_b_dump_virtual (void); + * + * In : - + * Out : - + * + * Note: uses current draw buffer + */ + ALIGNTEXT32 + GLOBL _vesa_b_dump_virtual +_vesa_b_dump_virtual: + CLD + PUSH_SR (ES) + PUSH_L (EBX) + PUSH_L (ESI) + PUSH_L (EDI) + PUSH_L (EBP) + MOV_SR (CONTENT(_vl_video_selector), ES) + MOV_L (CONTENT(_vl_current_draw_buffer), ESI) + MOV_L (CONTENT(_vl_current_offset), EDI) + MOV_L (CONTENT(_vesa_gran_shift), ECX) + MOV_L (CONTENT(_vesa_gran_mask), EBP) + MOV_L (EDI, EDX) + XOR_L (EBX, EBX) + AND_L (EBP, EDI) + SHR_L (CL, EDX) + INC_L (EBP) + CALL (VARINDIRECT(_vesa_swbank)) + MOV_L (CONTENT(_vl_current_stride), ECX) + MOV_L (CONTENT(_vl_current_height), EAX) + MOV_L (CONTENT(_vl_current_delta), EBX) + SHR_L (CONST(2), ECX) + ALIGNTEXT4 + 0: + PUSH_L (ECX) + ALIGNTEXT4 + 1: + CMP_L (EBP, EDI) + jb 2f + PUSH_L (EAX) + PUSH_L (EBX) + INC_L (EDX) + XOR_L (EBX, EBX) + CALL (VARINDIRECT(_vesa_swbank)) + POP_L (EBX) + POP_L (EAX) + SUB_L (EBP, EDI) + ALIGNTEXT4 + 2: + MOVS_L + DEC_L (ECX) + jnz 1b + POP_L (ECX) + ADD_L (EBX, EDI) + DEC_L (EAX) + jnz 0b + POP_L (EBP) + POP_L (EDI) + POP_L (ESI) + POP_L (EBX) + POP_SR (ES) + RET + +/* Desc: void vesa_l_dump_virtual (void); + * + * In : - + * Out : - + * + * Note: uses current draw buffer + */ + ALIGNTEXT32 + GLOBL _vesa_l_dump_virtual +_vesa_l_dump_virtual: + CLD + PUSH_SR (ES) + PUSH_L (ESI) + PUSH_L (EDI) + MOV_SR (CONTENT(_vl_video_selector), ES) + MOV_L (CONTENT(_vl_current_draw_buffer), ESI) + MOV_L (CONTENT(_vl_current_offset), EDI) + MOV_L (CONTENT(_vl_current_stride), ECX) + MOV_L (CONTENT(_vl_current_height), EDX) + MOV_L (CONTENT(_vl_current_delta), EAX) + SHR_L (CONST(2), ECX) + ALIGNTEXT4 + 0: + PUSH_L (ECX) + REP MOVS_L + POP_L (ECX) + ADD_L (EAX, EDI) + DEC_L (EDX) + jnz 0b + POP_L (EDI) + POP_L (ESI) + POP_SR (ES) + RET + +/* Desc: void vesa_l_dump_virtual_mmx (void); + * + * In : - + * Out : - + * + * Note: uses current draw buffer + */ + ALIGNTEXT32 + GLOBL _vesa_l_dump_virtual_mmx +_vesa_l_dump_virtual_mmx: +#ifdef USE_MMX_ASM + PUSH_L (ESI) + PUSH_L (EDI) + MOV_SR (CONTENT(_vl_video_selector), FS) + MOV_L (CONTENT(_vl_current_draw_buffer), ESI) + MOV_L (CONTENT(_vl_current_offset), EDI) + MOV_L (CONTENT(_vl_current_stride), ECX) + MOV_L (CONTENT(_vl_current_height), EDX) + MOV_L (CONTENT(_vl_current_delta), EAX) + SHR_L (CONST(3), ECX) + ALIGNTEXT4 + 0: + PUSH_L (ECX) + ALIGNTEXT4 + 1: + MOVQ (REGIND(ESI), MM0) + ADD_L (CONST(8), ESI) + SEGFS + MOVQ (MM0, REGIND(EDI)) + ADD_L (CONST(8), EDI) + DEC_L (ECX) + jnz 1b + POP_L (ECX) + ADD_L (EAX, EDI) + DEC_L (EDX) + jnz 0b + POP_L (EDI) + POP_L (ESI) + EMMS +#endif + RET |