|
0
|
1 #ifdef WIN32
|
|
|
2 #include "windows.h"
|
|
|
3 void VIS_EnterCriticalSectionImpl(short * cs)
|
|
|
4 {
|
|
|
5 int tmp = (int)cs;
|
|
|
6 __asm
|
|
|
7 {
|
|
|
8 mov ebx, tmp
|
|
|
9 CriticalLoop:
|
|
|
10 bts [ebx], 0
|
|
|
11 jnc End
|
|
|
12 }
|
|
|
13 Sleep(0);
|
|
|
14 __asm
|
|
|
15 {
|
|
|
16 jmp CriticalLoop
|
|
|
17 }
|
|
|
18
|
|
|
19 End:
|
|
|
20 return;
|
|
|
21 }
|
|
|
22
|
|
|
23 #else
|
|
|
24
|
|
|
25 #include <unistd.h>
|
|
|
26
|
|
|
27 volatile /*inline*/ void VIS_EnterCriticalSectionImpl(short * cs)
|
|
|
28 {
|
|
|
29 int code;
|
|
|
30 VIS_EnterStart:
|
|
|
31 asm(
|
|
|
32 "movw $1, %%ax\n\t"
|
|
|
33 "xchg %%ax, (%1)\n\t"
|
|
|
34 "test %%ax, %%ax\n\t"
|
|
|
35 "jz VIS_EnterEnd\n\t"
|
|
|
36 "movl $1, %0\n\t"
|
|
|
37 "jmp VIS_EnterCont\n"
|
|
|
38 "VIS_EnterEnd:\n\t"
|
|
|
39 "movl $0, %0\n"
|
|
|
40 "VIS_EnterCont:":
|
|
|
41 "=r"(code):
|
|
|
42 "r"(cs):
|
|
|
43 "%ax");
|
|
|
44 if(!code)
|
|
|
45 return;
|
|
|
46 sleep(0);
|
|
|
47 goto VIS_EnterStart;
|
|
|
48 }
|
|
|
49
|
|
|
50 volatile /*inline*/ void VIS_LeaveCriticalSectionImpl(short * cs)
|
|
|
51 {
|
|
|
52 asm(
|
|
|
53 "movw $0, %%ax\n\t"
|
|
|
54 "mfence\n\t"
|
|
|
55 "xchg %%ax, (%0)"::
|
|
|
56 "r"(cs):
|
|
|
57 "%ax");
|
|
|
58 }
|
|
|
59
|
|
|
60 #endif
|
|
|
61
|
|
|
62
|
|
|
63
|
