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1 | /* dl_win32.xs |
2 | * |
3 | * Platform: Win32 (Windows NT/Windows 95) |
4 | * Author: Wei-Yuen Tan (wyt@hip.com) |
5 | * Created: A warm day in June, 1995 |
6 | * |
7 | * Modified: |
8 | * August 23rd 1995 - rewritten after losing everything when I |
9 | * wiped off my NT partition (eek!) |
10 | */ |
11 | |
12 | /* Porting notes: |
13 | |
14 | I merely took Paul's dl_dlopen.xs, took out extraneous stuff and |
15 | replaced the appropriate SunOS calls with the corresponding Win32 |
16 | calls. |
17 | |
18 | */ |
19 | |
20 | #define WIN32_LEAN_AND_MEAN |
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21 | #ifdef __GNUC__ |
22 | #define Win32_Winsock |
23 | #endif |
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24 | #include <windows.h> |
25 | #include <string.h> |
26 | |
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27 | #define PERL_NO_GET_CONTEXT |
28 | |
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29 | #include "EXTERN.h" |
30 | #include "perl.h" |
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31 | #include "win32.h" |
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32 | |
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33 | #include "XSUB.h" |
34 | |
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35 | static SV *error_sv; |
36 | |
37 | static char * |
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38 | OS_Error_String(pTHX) |
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39 | { |
40 | DWORD err = GetLastError(); |
41 | STRLEN len; |
42 | if (!error_sv) |
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43 | error_sv = newSVpvn("",0); |
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44 | PerlProc_GetOSError(error_sv,err); |
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45 | return SvPV(error_sv,len); |
46 | } |
47 | |
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48 | #include "dlutils.c" /* SaveError() etc */ |
49 | |
50 | static void |
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51 | dl_private_init(pTHX) |
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52 | { |
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53 | (void)dl_generic_private_init(aTHX); |
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54 | } |
55 | |
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56 | /* |
57 | This function assumes the list staticlinkmodules |
58 | will be formed from package names with '::' replaced |
59 | with '/'. Thus Win32::OLE is in the list as Win32/OLE |
60 | */ |
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61 | static int |
62 | dl_static_linked(char *filename) |
63 | { |
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64 | char **p; |
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65 | char* ptr; |
66 | static char subStr[] = "/auto/"; |
67 | char szBuffer[MAX_PATH]; |
68 | |
69 | /* change all the '\\' to '/' */ |
70 | strcpy(szBuffer, filename); |
71 | for(ptr = szBuffer; ptr = strchr(ptr, '\\'); ++ptr) |
72 | *ptr = '/'; |
73 | |
74 | /* delete the file name */ |
75 | ptr = strrchr(szBuffer, '/'); |
76 | if(ptr != NULL) |
77 | *ptr = '\0'; |
78 | |
79 | /* remove leading lib path */ |
80 | ptr = strstr(szBuffer, subStr); |
81 | if(ptr != NULL) |
82 | ptr += sizeof(subStr)-1; |
83 | else |
84 | ptr = szBuffer; |
85 | |
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86 | for (p = staticlinkmodules; *p;p++) { |
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87 | if (strstr(ptr, *p)) return 1; |
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88 | }; |
89 | return 0; |
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90 | } |
91 | |
92 | MODULE = DynaLoader PACKAGE = DynaLoader |
93 | |
94 | BOOT: |
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95 | (void)dl_private_init(aTHX); |
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96 | |
97 | void * |
98 | dl_load_file(filename,flags=0) |
99 | char * filename |
100 | int flags |
101 | PREINIT: |
102 | CODE: |
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103 | { |
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104 | DLDEBUG(1,PerlIO_printf(Perl_debug_log,"dl_load_file(%s):\n", filename)); |
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105 | if (dl_static_linked(filename) == 0) { |
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106 | RETVAL = PerlProc_DynaLoad(filename); |
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107 | } |
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108 | else |
109 | RETVAL = (void*) GetModuleHandle(NULL); |
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110 | DLDEBUG(2,PerlIO_printf(Perl_debug_log," libref=%x\n", RETVAL)); |
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111 | ST(0) = sv_newmortal() ; |
112 | if (RETVAL == NULL) |
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113 | SaveError(aTHX_ "load_file:%s", |
114 | OS_Error_String(aTHX)) ; |
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115 | else |
116 | sv_setiv( ST(0), (IV)RETVAL); |
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117 | } |
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118 | |
119 | void * |
120 | dl_find_symbol(libhandle, symbolname) |
121 | void * libhandle |
122 | char * symbolname |
123 | CODE: |
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124 | DLDEBUG(2,PerlIO_printf(Perl_debug_log,"dl_find_symbol(handle=%x, symbol=%s)\n", |
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125 | libhandle, symbolname)); |
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126 | RETVAL = (void*) GetProcAddress((HINSTANCE) libhandle, symbolname); |
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127 | DLDEBUG(2,PerlIO_printf(Perl_debug_log," symbolref = %x\n", RETVAL)); |
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128 | ST(0) = sv_newmortal() ; |
129 | if (RETVAL == NULL) |
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130 | SaveError(aTHX_ "find_symbol:%s", |
131 | OS_Error_String(aTHX)) ; |
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132 | else |
133 | sv_setiv( ST(0), (IV)RETVAL); |
134 | |
135 | |
136 | void |
137 | dl_undef_symbols() |
138 | PPCODE: |
139 | |
140 | |
141 | |
142 | # These functions should not need changing on any platform: |
143 | |
144 | void |
145 | dl_install_xsub(perl_name, symref, filename="$Package") |
146 | char * perl_name |
147 | void * symref |
148 | char * filename |
149 | CODE: |
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150 | DLDEBUG(2,PerlIO_printf(Perl_debug_log,"dl_install_xsub(name=%s, symref=%x)\n", |
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151 | perl_name, symref)); |
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152 | ST(0) = sv_2mortal(newRV((SV*)newXS(perl_name, |
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153 | (void(*)(pTHX_ CV *))symref, |
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154 | filename))); |
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155 | |
156 | |
157 | char * |
158 | dl_error() |
159 | CODE: |
160 | RETVAL = LastError ; |
161 | OUTPUT: |
162 | RETVAL |
163 | |
164 | # end. |