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a99bdfd8 DD |
1 | /* |
2 | * Copyright (c) 2000, Red Hat, Inc. | |
3 | * | |
4 | * This program is free software; you can redistribute it and/or modify | |
5 | * it under the terms of the GNU General Public License as published by | |
6 | * the Free Software Foundation; either version 2 of the License, or | |
7 | * (at your option) any later version. | |
8 | * | |
9 | * A copy of the GNU General Public License can be found at | |
10 | * http://www.gnu.org/ | |
11 | * | |
12 | * Written by DJ Delorie <dj@cygnus.com> | |
13 | * | |
14 | */ | |
8507f105 DD |
15 | |
16 | static char *cvsid = "\n%%% $Id$\n"; | |
17 | ||
a99bdfd8 DD |
18 | #include "win32.h" |
19 | ||
20 | typedef struct { | |
21 | char *name; | |
22 | HINSTANCE handle; | |
23 | } DllInfo; | |
24 | ||
25 | #define DLL(n) static DllInfo n ## _info __asm__ (#n "_info") = { #n, 0} | |
26 | ||
27 | #define Auto(dll, func, size) \ | |
28 | __asm__ ("\t.data"); \ | |
29 | __asm__ ("\t.global\t_" #func "@" #size); \ | |
30 | __asm__ ("_" #func "@" #size ":"); \ | |
31 | __asm__ ("\tcall\tautoload_common"); \ | |
32 | __asm__ ("\t.long\t" #dll "_info"); \ | |
33 | __asm__ ("\t.ascii\t\"" #func "\\0\"") | |
34 | ||
35 | DLL (wininet); | |
36 | ||
4a83b7b0 | 37 | Auto (wininet, InternetAttemptConnect, 4); |
a99bdfd8 DD |
38 | Auto (wininet, InternetCloseHandle, 4); |
39 | Auto (wininet, InternetGetLastResponseInfoA, 12); | |
40 | Auto (wininet, InternetOpenA, 20); | |
41 | Auto (wininet, InternetOpenUrlA, 24); | |
42 | Auto (wininet, InternetReadFile, 16); | |
43 | Auto (wininet, InternetSetOptionA, 16); | |
4a83b7b0 DD |
44 | Auto (wininet, InternetQueryOptionA, 16); |
45 | Auto (wininet, HttpQueryInfoA, 20); | |
46 | Auto (wininet, HttpSendRequestA, 20); | |
a99bdfd8 DD |
47 | |
48 | typedef struct { | |
49 | DllInfo *dll; | |
50 | char name[100]; | |
51 | } AutoEntry; | |
52 | ||
53 | static void autoload_common () __asm__ ("autoload_common"); | |
54 | ||
55 | static void | |
56 | autoload_common (int x) | |
57 | { | |
58 | int fp, rel; | |
59 | unsigned char *proc; | |
60 | HINSTANCE h; | |
61 | AutoEntry *a; | |
62 | ||
63 | a = *(AutoEntry **)(&x - 1); | |
64 | if (a->dll->handle == 0) | |
65 | { | |
66 | h = LoadLibrary (a->dll->name); | |
67 | a->dll->handle = h; | |
68 | } | |
69 | fp = (int) GetProcAddress (a->dll->handle, a->name); | |
70 | proc = ((unsigned char *)a) - 5; | |
71 | rel = fp - (int)(a); /* now it's a relative call */ | |
72 | *proc++ = 0xe9; /* jump near 32-bit relative */ | |
73 | *proc++ = rel; | |
74 | *proc++ = rel>>8; | |
75 | *proc++ = rel>>16; | |
76 | *proc++ = rel>>24; | |
77 | ||
78 | *(int *)(&x-1) = (int)proc-5; | |
79 | } |