diff options
Diffstat (limited to 'plugins/gxvideo/i386.asm')
| -rw-r--r-- | plugins/gxvideo/i386.asm | 67 |
1 files changed, 67 insertions, 0 deletions
diff --git a/plugins/gxvideo/i386.asm b/plugins/gxvideo/i386.asm new file mode 100644 index 00000000..86d6e231 --- /dev/null +++ b/plugins/gxvideo/i386.asm @@ -0,0 +1,67 @@ +; i386.asm - description +; ------------------- +; begin : Sun Nov 08 2001 +; copyright : (C) 2001 by Pete Bernert +; email : BlackDove@addcom.de + +; ported from inline gcc to nasm by linuzappz + + +; This program is free software; you can redistribute it and/or modify * +; it under the terms of the GNU General Public License as published by * +; the Free Software Foundation; either version 2 of the License, or * +; (at your option) any later version. See also the license.txt file for * +; additional informations. * + + +bits 32 + +section .text + +%include "macros.inc" + +NEWSYM i386_BGR24to16 + push ebp + mov ebp, esp + push ebx + push edx + + mov eax, [ebp+8] ; this can hold the G value + mov ebx, eax ; this can hold the R value + mov edx, eax ; this can hold the B value + shr ebx, 3 ; move the R value + and edx, 00f80000h ; mask the B value + shr edx, 9 ; move the B value + and eax, 00f800h ; mask the G value + shr eax, 6 ; move the G value + and ebx, 0000001fh ; mask the R value + or eax, ebx ; add R to G value + or eax, edx ; add B to RG value + pop edx + pop ebx + mov esp, ebp + pop ebp + ret + +NEWSYM i386_shl10idiv + push ebp + mov ebp, esp + push ebx + push edx + + mov eax, [ebp+8] + mov ebx, [ebp+12] + mov edx, eax + shl eax, 10 + sar edx, 22 + idiv ebx + + pop edx + pop ebx + mov esp, ebp + pop ebp + ret +%ifidn __OUTPUT_FORMAT__,elf +section .note.GNU-stack noalloc noexec nowrite progbits +%endif + |