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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 | { |
67 | char *error; |
68 | unsigned int index; |
69 | static char *OFIErrorStrings[] = |
70 | { |
71 | "%s(%d): Object Image Load Failure\n", |
72 | "%s(%d): Object Image Load Success\n", |
73 | "%s(%d): Not an recognisable object file\n", |
74 | "%s(%d): No valid architecture\n", |
75 | "%s(%d): Object image has an invalid format\n", |
76 | "%s(%d): Invalid access (permissions?)\n", |
77 | "%s(%d): Unknown error code from NSCreateObjectFileImageFromFile\n", |
78 | }; |
79 | #define NUM_OFI_ERRORS (sizeof(OFIErrorStrings) / sizeof(OFIErrorStrings[0])) |
80 | |
81 | switch (type) |
82 | { |
83 | case OFImage: |
84 | index = number; |
85 | if (index > NUM_OFI_ERRORS - 1) |
86 | index = NUM_OFI_ERRORS - 1; |
87 | error = form(OFIErrorStrings[index], path, number); |
88 | break; |
89 | |
90 | default: |
91 | error = form("%s(%d): Totally unknown error type %d\n", |
92 | path, number, type); |
93 | break; |
94 | } |
95 | safefree(dl_last_error); |
96 | dl_last_error = savepv(error); |
97 | } |
98 | |
99 | static char *dlopen(char *path, int mode /* mode is ignored */) |
100 | { |
101 | int dyld_result; |
102 | NSObjectFileImage ofile; |
103 | NSModule handle = NULL; |
104 | |
105 | dyld_result = NSCreateObjectFileImageFromFile(path, &ofile); |
106 | if (dyld_result != NSObjectFileImageSuccess) |
107 | TranslateError(path, OFImage, dyld_result); |
108 | else |
109 | { |
110 | // NSLinkModule will cause the run to abort on any link error's |
111 | // not very friendly but the error recovery functionality is limited. |
112 | handle = NSLinkModule(ofile, path, TRUE); |
113 | } |
114 | |
115 | return handle; |
116 | } |
117 | |
118 | void * |
119 | dlsym(handle, symbol) |
120 | void *handle; |
121 | char *symbol; |
122 | { |
123 | void *addr; |
124 | |
125 | if (NSIsSymbolNameDefined(symbol)) |
126 | addr = NSAddressOfSymbol(NSLookupAndBindSymbol(symbol)); |
127 | else |
128 | addr = NULL; |
129 | |
130 | return addr; |
131 | } |
132 | |
133 | |
134 | |
135 | /* ----- code from dl_dlopen.xs below here ----- */ |
136 | |
137 | |
138 | static void |
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139 | dl_private_init(pTHX) |
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140 | { |
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141 | (void)dl_generic_private_init(aTHX); |
142 | dl_resolve_using = get_av("DynaLoader::dl_resolve_using", 0x4); |
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143 | } |
144 | |
145 | MODULE = DynaLoader PACKAGE = DynaLoader |
146 | |
147 | BOOT: |
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148 | (void)dl_private_init(aTHX); |
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149 | |
150 | |
151 | |
152 | void * |
153 | dl_load_file(filename, flags=0) |
154 | char * filename |
155 | int flags |
156 | PREINIT: |
157 | int mode = 1; |
158 | CODE: |
159 | DLDEBUG(1,PerlIO_printf(PerlIO_stderr(), "dl_load_file(%s,%x):\n", filename,flags)); |
160 | if (flags & 0x01) |
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161 | Perl_warn(aTHX_ "Can't make loaded symbols global on this platform while loading %s",filename); |
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162 | RETVAL = dlopen(filename, mode) ; |
163 | DLDEBUG(2,PerlIO_printf(PerlIO_stderr(), " libref=%x\n", RETVAL)); |
164 | ST(0) = sv_newmortal() ; |
165 | if (RETVAL == NULL) |
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166 | SaveError(aTHX_ "%s",dlerror()) ; |
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167 | else |
168 | sv_setiv( ST(0), (IV)RETVAL); |
169 | |
170 | |
171 | void * |
172 | dl_find_symbol(libhandle, symbolname) |
173 | void * libhandle |
174 | char * symbolname |
175 | CODE: |
176 | symbolname = form("_%s", symbolname); |
177 | DLDEBUG(2, PerlIO_printf(PerlIO_stderr(), |
178 | "dl_find_symbol(handle=%lx, symbol=%s)\n", |
179 | (unsigned long) libhandle, symbolname)); |
180 | RETVAL = dlsym(libhandle, symbolname); |
181 | DLDEBUG(2, PerlIO_printf(PerlIO_stderr(), |
182 | " symbolref = %lx\n", (unsigned long) RETVAL)); |
183 | ST(0) = sv_newmortal() ; |
184 | if (RETVAL == NULL) |
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185 | SaveError(aTHX_ "%s",dlerror()) ; |
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186 | else |
187 | sv_setiv( ST(0), (IV)RETVAL); |
188 | |
189 | |
190 | void |
191 | dl_undef_symbols() |
192 | PPCODE: |
193 | |
194 | |
195 | |
196 | # These functions should not need changing on any platform: |
197 | |
198 | void |
199 | dl_install_xsub(perl_name, symref, filename="$Package") |
200 | char * perl_name |
201 | void * symref |
202 | char * filename |
203 | CODE: |
204 | DLDEBUG(2,PerlIO_printf(PerlIO_stderr(), "dl_install_xsub(name=%s, symref=%x)\n", |
205 | perl_name, symref)); |
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206 | ST(0) = sv_2mortal(newRV((SV*)newXS(perl_name, |
207 | (void(*)(pTHX_ CV *))symref, |
208 | filename))); |
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209 | |
210 | |
211 | char * |
212 | dl_error() |
213 | CODE: |
214 | RETVAL = LastError ; |
215 | OUTPUT: |
216 | RETVAL |
217 | |
218 | +# end. |