Subversion Repositories Kolibri OS

Rev

Rev 9172 | Details | Compare with Previous | Last modification | View Log | RSS feed

Rev Author Line No. Line
9172 turbocat 1 
;
2 
; x86 format converters for HERMES
3 
; Some routines Copyright (c) 1998 Christian Nentwich (brn@eleet.mcb.at)
4 
; This source code is licensed under the GNU LGPL
5 
;
6 
; Please refer to the file COPYING.LIB contained in the distribution for
7 
; licensing conditions
8 
;
9 
; Most routines are (c) Glenn Fiedler (ptc@gaffer.org), used with permission
10 
;
11 
 
12 
BITS 32
13 
 
14 
%include "common.inc"
15 
 
16 
SDL_FUNC _ConvertX86
17 
SDL_FUNC _Hermes_X86_CPU
18 
 
9202 turbocat 19 
SDL_FUNC ConvertX86
20 
SDL_FUNC Hermes_X86_CPU
21 
 
9172 turbocat 22 
SECTION .data
23 
cpu_flags dd 0
24 
 
25 
SECTION .text
26 
 
27 
;; _ConvertX86:
28 
;; [ESP+8] ConverterInfo*
29 
;; --------------------------------------------------------------------------
30 
;; ConverterInfo (ebp+..)
31 
;;   0:	void *s_pixels
32 
;;   4:	int s_width
33 
;;   8:	int s_height
34 
;;  12:	int s_add
35 
;;  16:	void *d_pixels
36 
;;  20:	int d_width
37 
;;  24:	int d_height
38 
;;  28:	int d_add
39 
;;  32:	void (*converter_function)()
40 
;;  36: int32 *lookup
9202 turbocat 41 
 
42 
ConvertX86:
9172 turbocat 43 
_ConvertX86:
44 
	push ebp
45 
	mov ebp,esp
46 
 
47 
; Save the registers used by the blitters, necessary for optimized code
48 
	pusha
49 
 
50 
	mov eax,[ebp+8]
51 
 
52 
        cmp dword [eax+4],BYTE 0
53 
	je endconvert
54 
 
55 
	mov ebp,eax
56 
 
57 
	mov esi,[ebp+0]
58 
	mov edi,[ebp+16]
59 
 
60 
y_loop:
61 
	mov ecx,[ebp+4]
62 
 
63 
	call [ebp+32]
64 
 
65 
	add esi,[ebp+12]
66 
	add edi,[ebp+28]
67 
 
68 
	dec dword  [ebp+8]
69 
	jnz y_loop
70 
 
71 
; Restore the registers used by the blitters, necessary for optimized code
72 
	popa
73 
 
74 
	pop ebp
75 
 
76 
endconvert:
77 
	ret
78 
 
9202 turbocat 79 
Hermes_X86_CPU:
9172 turbocat 80 
_Hermes_X86_CPU:
81 
	pushfd
82 
	pop eax
83 
 
84 
	mov ecx,eax
85 
 
86 
	xor eax,040000h
87 
	push eax
88 
 
89 
	popfd
90 
	pushfd
91 
 
92 
	pop eax
93 
	xor eax,ecx
94 
	jz .L1			; Processor is 386
95 
 
96 
	push ecx
97 
	popfd
98 
 
99 
	mov eax,ecx
100 
	xor eax,200000h
101 
 
102 
	push eax
103 
	popfd
104 
	pushfd
105 
 
106 
	pop eax
107 
	xor eax,ecx
108 
	je .L1
109 
 
110 
	pusha
111 
 
112 
	mov eax,1
113 
	cpuid
114 
 
115 
	mov [cpu_flags],edx
116 
 
117 
	popa
118 
 
119 
	mov eax,[cpu_flags]
120 
 
121 
.L1:
122 
	ret
123 
 
124 
 
125 
%ifidn __OUTPUT_FORMAT__,elf32
126 
section .note.GNU-stack noalloc noexec nowrite progbits
127 
%endif