|
0
|
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 GLOBAL _ConvertX86
|
|
|
15 GLOBAL _x86return
|
|
|
16
|
|
|
17 GLOBAL _Hermes_X86_CPU
|
|
|
18
|
|
|
19
|
|
|
20 SECTION .data
|
|
|
21
|
|
|
22 cpu_flags dd 0
|
|
|
23
|
|
|
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
|
|
|
41
|
|
|
42 _ConvertX86:
|
|
|
43 push ebp
|
|
|
44 mov ebp,esp
|
|
|
45
|
|
|
46 ; Save the registers used by the blitters, necessary for optimized code
|
|
|
47 pusha
|
|
|
48
|
|
|
49 mov eax,[ebp+8]
|
|
|
50
|
|
|
51 cmp dword [eax+4],BYTE 0
|
|
|
52 je endconvert
|
|
|
53
|
|
|
54 mov ebp,eax
|
|
|
55
|
|
|
56 mov esi,[ebp+0]
|
|
|
57 mov edi,[ebp+16]
|
|
|
58
|
|
|
59 y_loop:
|
|
|
60 mov ecx,[ebp+4]
|
|
|
61
|
|
|
62 jmp [ebp+32]
|
|
|
63
|
|
|
64 _x86return:
|
|
|
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
|
|
|
79
|
|
|
80
|
|
|
81 ;; Hermes_X86_CPU returns the CPUID flags in eax
|
|
|
82
|
|
|
83 _Hermes_X86_CPU:
|
|
|
84 pushfd
|
|
|
85 pop eax
|
|
|
86
|
|
|
87 mov ecx,eax
|
|
|
88
|
|
|
89 xor eax,040000h
|
|
|
90 push eax
|
|
|
91
|
|
|
92 popfd
|
|
|
93 pushfd
|
|
|
94
|
|
|
95 pop eax
|
|
|
96 xor eax,ecx
|
|
|
97 jz .L1 ; Processor is 386
|
|
|
98
|
|
|
99 push ecx
|
|
|
100 popfd
|
|
|
101
|
|
|
102 mov eax,ecx
|
|
|
103 xor eax,200000h
|
|
|
104
|
|
|
105 push eax
|
|
|
106 popfd
|
|
|
107 pushfd
|
|
|
108
|
|
|
109 pop eax
|
|
|
110 xor eax,ecx
|
|
|
111 je .L1
|
|
|
112
|
|
|
113 pusha
|
|
|
114
|
|
|
115 mov eax,1
|
|
|
116 cpuid
|
|
|
117
|
|
|
118 mov [cpu_flags],edx
|
|
|
119
|
|
|
120 popa
|
|
|
121
|
|
|
122 mov eax,[cpu_flags]
|
|
|
123
|
|
|
124 .L1:
|
|
|
125 ret
|
