| /* |
| * 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 v1.3 for Mesa |
| * |
| * Copyright (C) 2002 - Borca Daniel |
| * Email : dborca@yahoo.com |
| * Web : http://www.geocities.com/dborca |
| */ |
| |
| |
| .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; |
| */ |
| |
| .text |
| |
| /* Desc: VESA bank switching routine (BIOS) |
| * |
| * In : EBX=0, EDX = bank number |
| * Out : - |
| * |
| * Note: thrashes EAX |
| */ |
| .p2align 5,,31 |
| _vesa_swbankBIOS: |
| movw $0x4f05, %ax |
| int $0x10 |
| ret |
| |
| .p2align 2,,3 |
| .global _vesa_swbank |
| _vesa_swbank: .long _vesa_swbankBIOS |
| |
| /* Desc: void vesa_b_dump_virtual (void); |
| * |
| * In : - |
| * Out : - |
| * |
| * Note: uses current draw buffer |
| */ |
| .p2align 5,,31 |
| .global _vesa_b_dump_virtual |
| _vesa_b_dump_virtual: |
| cld |
| pushl %es |
| pushl %ebx |
| pushl %esi |
| pushl %edi |
| pushl %ebp |
| movl _vl_video_selector, %es |
| movl _vl_current_draw_buffer, %esi |
| movl _vl_current_offset, %edi |
| movl _vesa_gran_shift, %ecx |
| movl _vesa_gran_mask, %ebp |
| movl %edi, %edx |
| xorl %ebx, %ebx |
| andl %ebp, %edi |
| shrl %cl, %edx |
| incl %ebp |
| call *_vesa_swbank |
| movl _vl_current_stride, %ecx |
| movl _vl_current_height, %eax |
| movl _vl_current_delta, %ebx |
| shrl $2, %ecx |
| .balign 4 |
| 0: |
| pushl %ecx |
| .balign 4 |
| 1: |
| cmpl %ebp, %edi |
| jb 2f |
| pushl %eax |
| pushl %ebx |
| incl %edx |
| xorl %ebx, %ebx |
| call *_vesa_swbank |
| popl %ebx |
| popl %eax |
| subl %ebp, %edi |
| .balign 4 |
| 2: |
| movsl |
| decl %ecx |
| jnz 1b |
| popl %ecx |
| addl %ebx, %edi |
| decl %eax |
| jnz 0b |
| popl %ebp |
| popl %edi |
| popl %esi |
| popl %ebx |
| popl %es |
| ret |
| |
| /* Desc: void vesa_l_dump_virtual (void); |
| * |
| * In : - |
| * Out : - |
| * |
| * Note: uses current draw buffer |
| */ |
| .p2align 5,,31 |
| .global _vesa_l_dump_virtual |
| _vesa_l_dump_virtual: |
| cld |
| pushl %es |
| pushl %esi |
| pushl %edi |
| movl _vl_video_selector, %es |
| movl _vl_current_draw_buffer, %esi |
| movl _vl_current_offset, %edi |
| movl _vl_current_stride, %ecx |
| movl _vl_current_height, %edx |
| movl _vl_current_delta, %eax |
| shrl $2, %ecx |
| .balign 4 |
| 0: |
| pushl %ecx |
| rep; movsl |
| popl %ecx |
| addl %eax, %edi |
| decl %edx |
| jnz 0b |
| popl %edi |
| popl %esi |
| popl %es |
| ret |
| |
| /* Desc: void vesa_l_dump_virtual_mmx (void); |
| * |
| * In : - |
| * Out : - |
| * |
| * Note: uses current draw buffer |
| */ |
| .p2align 5,,31 |
| .global _vesa_l_dump_virtual_mmx |
| _vesa_l_dump_virtual_mmx: |
| #ifdef USE_MMX_ASM |
| pushl %esi |
| pushl %edi |
| movl _vl_video_selector, %fs |
| movl _vl_current_draw_buffer, %esi |
| movl _vl_current_offset, %edi |
| movl _vl_current_stride, %ecx |
| movl _vl_current_height, %edx |
| movl _vl_current_delta, %eax |
| shrl $3, %ecx |
| .balign 4 |
| 0: |
| pushl %ecx |
| .balign 4 |
| 1: |
| movq (%esi), %mm0 |
| addl $8, %esi |
| movq %mm0, %fs:(%edi) |
| addl $8, %edi |
| decl %ecx |
| jnz 1b |
| popl %ecx |
| addl %eax, %edi |
| decl %edx |
| jnz 0b |
| popl %edi |
| popl %esi |
| emms |
| #endif |
| ret |
