Commit | Line | Data |
---|---|---|
8f1f23e8 W |
1 | /* dl_rhapsody.xs |
2 | * | |
3 | * Platform: Apple Rhapsody 5.0 | |
4 | * Based on: dl_next.xs by Paul Marquess | |
5 | * Based on: dl_dlopen.xs by Anno Siegel | |
6 | * Created: Aug 15th, 1994 | |
7 | * | |
8 | */ | |
9 | ||
10 | /* | |
11 | And Gandalf said: 'Many folk like to know beforehand what is to | |
12 | be set on the table; but those who have laboured to prepare the | |
13 | feast like to keep their secret; for wonder makes the words of | |
14 | praise louder.' | |
15 | */ | |
16 | ||
17 | /* Porting notes: | |
18 | ||
19 | dl_next.xs is itself a port from dl_dlopen.xs by Paul Marquess. It | |
20 | should not be used as a base for further ports though it may be used | |
21 | as an example for how dl_dlopen.xs can be ported to other platforms. | |
22 | ||
23 | The method used here is just to supply the sun style dlopen etc. | |
24 | functions in terms of NeXTs rld_*. The xs code proper is unchanged | |
25 | from Paul's original. | |
26 | ||
27 | The port could use some streamlining. For one, error handling could | |
28 | be simplified. | |
29 | ||
30 | Anno Siegel | |
31 | ||
32 | */ | |
33 | ||
34 | #include "EXTERN.h" | |
35 | #include "perl.h" | |
36 | #include "XSUB.h" | |
37 | ||
38 | #define DL_LOADONCEONLY | |
39 | ||
40 | #include "dlutils.c" /* SaveError() etc */ | |
41 | ||
42 | #undef environ | |
43 | #import <mach-o/dyld.h> | |
44 | ||
45 | static char * dl_last_error = (char *) 0; | |
46 | static AV *dl_resolve_using = Nullav; | |
47 | ||
48 | static char *dlerror() | |
49 | { | |
50 | return dl_last_error; | |
51 | } | |
52 | ||
53 | int dlclose(handle) /* stub only */ | |
54 | void *handle; | |
55 | { | |
56 | return 0; | |
57 | } | |
58 | ||
59 | enum dyldErrorSource | |
60 | { | |
61 | OFImage, | |
62 | }; | |
63 | ||
64 | static void TranslateError | |
65 | (const char *path, enum dyldErrorSource type, int number) | |
66 | { | |
5b877257 | 67 | dTHX; |
8f1f23e8 W |
68 | char *error; |
69 | unsigned int index; | |
70 | static char *OFIErrorStrings[] = | |
71 | { | |
72 | "%s(%d): Object Image Load Failure\n", | |
73 | "%s(%d): Object Image Load Success\n", | |
74 | "%s(%d): Not an recognisable object file\n", | |
75 | "%s(%d): No valid architecture\n", | |
76 | "%s(%d): Object image has an invalid format\n", | |
77 | "%s(%d): Invalid access (permissions?)\n", | |
78 | "%s(%d): Unknown error code from NSCreateObjectFileImageFromFile\n", | |
79 | }; | |
80 | #define NUM_OFI_ERRORS (sizeof(OFIErrorStrings) / sizeof(OFIErrorStrings[0])) | |
81 | ||
82 | switch (type) | |
83 | { | |
84 | case OFImage: | |
85 | index = number; | |
86 | if (index > NUM_OFI_ERRORS - 1) | |
87 | index = NUM_OFI_ERRORS - 1; | |
88 | error = form(OFIErrorStrings[index], path, number); | |
89 | break; | |
90 | ||
91 | default: | |
92 | error = form("%s(%d): Totally unknown error type %d\n", | |
93 | path, number, type); | |
94 | break; | |
95 | } | |
96 | safefree(dl_last_error); | |
97 | dl_last_error = savepv(error); | |
98 | } | |
99 | ||
100 | static char *dlopen(char *path, int mode /* mode is ignored */) | |
101 | { | |
102 | int dyld_result; | |
103 | NSObjectFileImage ofile; | |
104 | NSModule handle = NULL; | |
105 | ||
106 | dyld_result = NSCreateObjectFileImageFromFile(path, &ofile); | |
107 | if (dyld_result != NSObjectFileImageSuccess) | |
108 | TranslateError(path, OFImage, dyld_result); | |
109 | else | |
110 | { | |
111 | // NSLinkModule will cause the run to abort on any link error's | |
112 | // not very friendly but the error recovery functionality is limited. | |
113 | handle = NSLinkModule(ofile, path, TRUE); | |
114 | } | |
115 | ||
116 | return handle; | |
117 | } | |
118 | ||
119 | void * | |
120 | dlsym(handle, symbol) | |
121 | void *handle; | |
122 | char *symbol; | |
123 | { | |
124 | void *addr; | |
125 | ||
126 | if (NSIsSymbolNameDefined(symbol)) | |
127 | addr = NSAddressOfSymbol(NSLookupAndBindSymbol(symbol)); | |
128 | else | |
129 | addr = NULL; | |
130 | ||
131 | return addr; | |
132 | } | |
133 | ||
134 | ||
135 | ||
136 | /* ----- code from dl_dlopen.xs below here ----- */ | |
137 | ||
138 | ||
139 | static void | |
cea2e8a9 | 140 | dl_private_init(pTHX) |
8f1f23e8 | 141 | { |
cea2e8a9 GS |
142 | (void)dl_generic_private_init(aTHX); |
143 | dl_resolve_using = get_av("DynaLoader::dl_resolve_using", 0x4); | |
8f1f23e8 W |
144 | } |
145 | ||
146 | MODULE = DynaLoader PACKAGE = DynaLoader | |
147 | ||
148 | BOOT: | |
cea2e8a9 | 149 | (void)dl_private_init(aTHX); |
8f1f23e8 W |
150 | |
151 | ||
152 | ||
153 | void * | |
154 | dl_load_file(filename, flags=0) | |
155 | char * filename | |
156 | int flags | |
157 | PREINIT: | |
158 | int mode = 1; | |
159 | CODE: | |
160 | DLDEBUG(1,PerlIO_printf(PerlIO_stderr(), "dl_load_file(%s,%x):\n", filename,flags)); | |
161 | if (flags & 0x01) | |
cea2e8a9 | 162 | Perl_warn(aTHX_ "Can't make loaded symbols global on this platform while loading %s",filename); |
8f1f23e8 W |
163 | RETVAL = dlopen(filename, mode) ; |
164 | DLDEBUG(2,PerlIO_printf(PerlIO_stderr(), " libref=%x\n", RETVAL)); | |
165 | ST(0) = sv_newmortal() ; | |
166 | if (RETVAL == NULL) | |
cea2e8a9 | 167 | SaveError(aTHX_ "%s",dlerror()) ; |
8f1f23e8 W |
168 | else |
169 | sv_setiv( ST(0), (IV)RETVAL); | |
170 | ||
171 | ||
172 | void * | |
173 | dl_find_symbol(libhandle, symbolname) | |
174 | void * libhandle | |
175 | char * symbolname | |
176 | CODE: | |
177 | symbolname = form("_%s", symbolname); | |
178 | DLDEBUG(2, PerlIO_printf(PerlIO_stderr(), | |
179 | "dl_find_symbol(handle=%lx, symbol=%s)\n", | |
180 | (unsigned long) libhandle, symbolname)); | |
181 | RETVAL = dlsym(libhandle, symbolname); | |
182 | DLDEBUG(2, PerlIO_printf(PerlIO_stderr(), | |
183 | " symbolref = %lx\n", (unsigned long) RETVAL)); | |
184 | ST(0) = sv_newmortal() ; | |
185 | if (RETVAL == NULL) | |
cea2e8a9 | 186 | SaveError(aTHX_ "%s",dlerror()) ; |
8f1f23e8 W |
187 | else |
188 | sv_setiv( ST(0), (IV)RETVAL); | |
189 | ||
190 | ||
191 | void | |
192 | dl_undef_symbols() | |
193 | PPCODE: | |
194 | ||
195 | ||
196 | ||
197 | # These functions should not need changing on any platform: | |
198 | ||
199 | void | |
200 | dl_install_xsub(perl_name, symref, filename="$Package") | |
201 | char * perl_name | |
202 | void * symref | |
203 | char * filename | |
204 | CODE: | |
205 | DLDEBUG(2,PerlIO_printf(PerlIO_stderr(), "dl_install_xsub(name=%s, symref=%x)\n", | |
206 | perl_name, symref)); | |
cea2e8a9 GS |
207 | ST(0) = sv_2mortal(newRV((SV*)newXS(perl_name, |
208 | (void(*)(pTHX_ CV *))symref, | |
209 | filename))); | |
8f1f23e8 W |
210 | |
211 | ||
212 | char * | |
213 | dl_error() | |
214 | CODE: | |
215 | RETVAL = LastError ; | |
216 | OUTPUT: | |
217 | RETVAL | |
218 | ||
219 | +# end. |