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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 | typedef struct { |
36 | SV * x_error_sv; |
37 | } my_cxtx_t; /* this *must* be named my_cxtx_t */ |
38 | |
39 | #define DL_CXT_EXTRA /* ask for dl_cxtx to be defined in dlutils.c */ |
40 | #include "dlutils.c" /* SaveError() etc */ |
41 | |
42 | #define dl_error_sv (dl_cxtx.x_error_sv) |
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43 | |
44 | static char * |
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45 | OS_Error_String(pTHX) |
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46 | { |
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47 | dMY_CXT; |
48 | DWORD err = GetLastError(); |
49 | STRLEN len; |
50 | if (!dl_error_sv) |
51 | dl_error_sv = newSVpvn("",0); |
52 | PerlProc_GetOSError(dl_error_sv,err); |
53 | return SvPV(dl_error_sv,len); |
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54 | } |
55 | |
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56 | static void |
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57 | dl_private_init(pTHX) |
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58 | { |
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59 | (void)dl_generic_private_init(aTHX); |
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60 | } |
61 | |
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62 | /* |
63 | This function assumes the list staticlinkmodules |
64 | will be formed from package names with '::' replaced |
65 | with '/'. Thus Win32::OLE is in the list as Win32/OLE |
66 | */ |
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67 | static int |
68 | dl_static_linked(char *filename) |
69 | { |
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70 | char **p; |
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71 | char *ptr, *hptr; |
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72 | static char subStr[] = "/auto/"; |
73 | char szBuffer[MAX_PATH]; |
74 | |
75 | /* change all the '\\' to '/' */ |
76 | strcpy(szBuffer, filename); |
77 | for(ptr = szBuffer; ptr = strchr(ptr, '\\'); ++ptr) |
78 | *ptr = '/'; |
79 | |
80 | /* delete the file name */ |
81 | ptr = strrchr(szBuffer, '/'); |
82 | if(ptr != NULL) |
83 | *ptr = '\0'; |
84 | |
85 | /* remove leading lib path */ |
86 | ptr = strstr(szBuffer, subStr); |
87 | if(ptr != NULL) |
88 | ptr += sizeof(subStr)-1; |
89 | else |
90 | ptr = szBuffer; |
91 | |
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92 | for (p = staticlinkmodules; *p;p++) { |
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93 | if (hptr = strstr(ptr, *p)) { |
94 | /* found substring, need more detailed check if module name match */ |
95 | if (hptr==ptr) { |
96 | return strcmp(ptr, *p)==0; |
97 | } |
98 | if (hptr[strlen(*p)] == 0) |
99 | return hptr[-1]=='/'; |
100 | } |
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101 | }; |
102 | return 0; |
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103 | } |
104 | |
105 | MODULE = DynaLoader PACKAGE = DynaLoader |
106 | |
107 | BOOT: |
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108 | (void)dl_private_init(aTHX); |
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109 | |
110 | void * |
111 | dl_load_file(filename,flags=0) |
112 | char * filename |
113 | int flags |
114 | PREINIT: |
115 | CODE: |
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116 | { |
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117 | DLDEBUG(1,PerlIO_printf(Perl_debug_log,"dl_load_file(%s):\n", filename)); |
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118 | if (dl_static_linked(filename) == 0) { |
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119 | RETVAL = PerlProc_DynaLoad(filename); |
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120 | } |
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121 | else |
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122 | RETVAL = (void*) Win_GetModuleHandle(NULL); |
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123 | DLDEBUG(2,PerlIO_printf(Perl_debug_log," libref=%x\n", RETVAL)); |
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124 | ST(0) = sv_newmortal() ; |
125 | if (RETVAL == NULL) |
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126 | SaveError(aTHX_ "load_file:%s", |
127 | OS_Error_String(aTHX)) ; |
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128 | else |
129 | sv_setiv( ST(0), (IV)RETVAL); |
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130 | } |
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131 | |
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132 | int |
133 | dl_unload_file(libref) |
134 | void * libref |
135 | CODE: |
136 | DLDEBUG(1,PerlIO_printf(Perl_debug_log, "dl_unload_file(%lx):\n", PTR2ul(libref))); |
137 | RETVAL = FreeLibrary(libref); |
138 | if (!RETVAL) |
139 | SaveError(aTHX_ "unload_file:%s", OS_Error_String(aTHX)) ; |
140 | DLDEBUG(2,PerlIO_printf(Perl_debug_log, " retval = %d\n", RETVAL)); |
141 | OUTPUT: |
142 | RETVAL |
143 | |
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144 | void * |
145 | dl_find_symbol(libhandle, symbolname) |
146 | void * libhandle |
147 | char * symbolname |
148 | CODE: |
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149 | DLDEBUG(2,PerlIO_printf(Perl_debug_log,"dl_find_symbol(handle=%x, symbol=%s)\n", |
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150 | libhandle, symbolname)); |
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151 | RETVAL = (void*) GetProcAddress((HINSTANCE) libhandle, symbolname); |
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152 | DLDEBUG(2,PerlIO_printf(Perl_debug_log," symbolref = %x\n", RETVAL)); |
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153 | ST(0) = sv_newmortal() ; |
154 | if (RETVAL == NULL) |
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155 | SaveError(aTHX_ "find_symbol:%s", |
156 | OS_Error_String(aTHX)) ; |
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157 | else |
158 | sv_setiv( ST(0), (IV)RETVAL); |
159 | |
160 | |
161 | void |
162 | dl_undef_symbols() |
163 | PPCODE: |
164 | |
165 | |
166 | |
167 | # These functions should not need changing on any platform: |
168 | |
169 | void |
170 | dl_install_xsub(perl_name, symref, filename="$Package") |
171 | char * perl_name |
172 | void * symref |
173 | char * filename |
174 | CODE: |
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175 | DLDEBUG(2,PerlIO_printf(Perl_debug_log,"dl_install_xsub(name=%s, symref=%x)\n", |
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176 | perl_name, symref)); |
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177 | ST(0) = sv_2mortal(newRV((SV*)newXS(perl_name, |
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178 | (void(*)(pTHX_ CV *))symref, |
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179 | filename))); |
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180 | |
181 | |
182 | char * |
183 | dl_error() |
184 | CODE: |
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185 | dMY_CXT; |
186 | RETVAL = dl_last_error; |
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187 | OUTPUT: |
188 | RETVAL |
189 | |
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190 | #if defined(USE_ITHREADS) |
191 | |
192 | void |
193 | CLONE(...) |
194 | CODE: |
195 | MY_CXT_CLONE; |
196 | |
197 | /* MY_CXT_CLONE just does a memcpy on the whole structure, so to avoid |
198 | * using Perl variables that belong to another thread, we create our |
199 | * own for this thread. |
200 | */ |
201 | MY_CXT.x_dl_last_error = newSVpvn("", 0); |
202 | |
203 | #endif |
204 | |
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205 | # end. |