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1 | /* |
2 | * Author: Jeff Okamoto (okamoto@corp.hp.com) |
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3 | * Version: 2.1, 1995/1/25 |
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4 | */ |
5 | |
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6 | /* o Added BIND_VERBOSE to dl_nonlazy condition to add names of missing |
7 | * symbols to stderr message on fatal error. |
8 | * |
9 | * o Added BIND_NONFATAL comment to default condition. |
10 | * |
11 | * Chuck Phillips (cdp@fc.hp.com) |
12 | * Version: 2.2, 1997/5/4 */ |
13 | |
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14 | #ifdef __hp9000s300 |
15 | #define magic hpux_magic |
16 | #define MAGIC HPUX_MAGIC |
17 | #endif |
18 | |
19 | #include <dl.h> |
20 | #ifdef __hp9000s300 |
21 | #undef magic |
22 | #undef MAGIC |
23 | #endif |
24 | |
25 | #include "EXTERN.h" |
26 | #include "perl.h" |
27 | #include "XSUB.h" |
28 | |
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29 | typedef struct { |
30 | AV * x_resolve_using; |
31 | } my_cxtx_t; /* this *must* be named my_cxtx_t */ |
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32 | |
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33 | #define DL_CXT_EXTRA /* ask for dl_cxtx to be defined in dlutils.c */ |
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34 | #include "dlutils.c" /* for SaveError() etc */ |
35 | |
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36 | #define dl_resolve_using (dl_cxtx.x_resolve_using) |
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37 | |
38 | static void |
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39 | dl_private_init(pTHX) |
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40 | { |
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41 | (void)dl_generic_private_init(aTHX); |
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42 | { |
43 | dMY_CXT; |
44 | dl_resolve_using = get_av("DynaLoader::dl_resolve_using", GV_ADDMULTI); |
45 | } |
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46 | } |
47 | |
48 | MODULE = DynaLoader PACKAGE = DynaLoader |
49 | |
50 | BOOT: |
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51 | (void)dl_private_init(aTHX); |
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52 | |
53 | |
54 | void * |
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55 | dl_load_file(filename, flags=0) |
56 | char * filename |
57 | int flags |
58 | PREINIT: |
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59 | shl_t obj = NULL; |
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60 | int i, max, bind_type; |
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61 | dMY_CXT; |
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62 | CODE: |
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63 | DLDEBUG(1,PerlIO_printf(Perl_debug_log, "dl_load_file(%s,%x):\n", filename,flags)); |
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64 | if (flags & 0x01) |
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65 | Perl_warn(aTHX_ "Can't make loaded symbols global on this platform while loading %s",filename); |
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66 | if (dl_nonlazy) { |
67 | bind_type = BIND_IMMEDIATE|BIND_VERBOSE; |
68 | } else { |
69 | bind_type = BIND_DEFERRED; |
70 | /* For certain libraries, like DCE, deferred binding often causes run |
71 | * time problems. Adding BIND_NONFATAL to BIND_IMMEDIATE still allows |
72 | * unresolved references in situations like this. */ |
73 | /* bind_type = BIND_IMMEDIATE|BIND_NONFATAL; */ |
74 | } |
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75 | /* BIND_NOSTART removed from bind_type because it causes the shared library's */ |
76 | /* initialisers not to be run. This causes problems with all of the static objects */ |
77 | /* in the library. */ |
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78 | #ifdef DEBUGGING |
79 | if (dl_debug) |
80 | bind_type |= BIND_VERBOSE; |
81 | #endif /* DEBUGGING */ |
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82 | |
83 | max = AvFILL(dl_resolve_using); |
84 | for (i = 0; i <= max; i++) { |
85 | char *sym = SvPVX(*av_fetch(dl_resolve_using, i, 0)); |
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86 | DLDEBUG(1,PerlIO_printf(Perl_debug_log, "dl_load_file(%s) (dependent)\n", sym)); |
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87 | obj = shl_load(sym, bind_type, 0L); |
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88 | if (obj == NULL) { |
89 | goto end; |
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90 | } |
91 | } |
92 | |
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93 | DLDEBUG(1,PerlIO_printf(Perl_debug_log, "dl_load_file(%s): ", filename)); |
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94 | obj = shl_load(filename, bind_type, 0L); |
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95 | |
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96 | DLDEBUG(2,PerlIO_printf(Perl_debug_log, " libref=%x\n", obj)); |
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97 | end: |
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98 | ST(0) = sv_newmortal() ; |
99 | if (obj == NULL) |
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100 | SaveError(aTHX_ "%s",Strerror(errno)); |
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101 | else |
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102 | sv_setiv( ST(0), PTR2IV(obj) ); |
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103 | |
104 | |
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105 | int |
106 | dl_unload_file(libref) |
107 | void * libref |
108 | CODE: |
109 | DLDEBUG(1,PerlIO_printf(Perl_debug_log, "dl_unload_file(%lx):\n", PTR2ul(libref))); |
110 | RETVAL = (shl_unload(libref) == 0 ? 1 : 0); |
111 | if (!RETVAL) |
112 | SaveError(aTHX_ "%s", Strerror(errno)); |
113 | DLDEBUG(2,PerlIO_printf(Perl_debug_log, " retval = %d\n", RETVAL)); |
114 | OUTPUT: |
115 | RETVAL |
116 | |
117 | |
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118 | void * |
119 | dl_find_symbol(libhandle, symbolname) |
120 | void * libhandle |
121 | char * symbolname |
122 | CODE: |
123 | shl_t obj = (shl_t) libhandle; |
124 | void *symaddr = NULL; |
125 | int status; |
126 | #ifdef __hp9000s300 |
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127 | symbolname = Perl_form_nocontext("_%s", symbolname); |
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128 | #endif |
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129 | DLDEBUG(2, PerlIO_printf(Perl_debug_log, |
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130 | "dl_find_symbol(handle=%lx, symbol=%s)\n", |
131 | (unsigned long) libhandle, symbolname)); |
132 | |
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133 | ST(0) = sv_newmortal() ; |
134 | errno = 0; |
135 | |
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136 | status = shl_findsym(&obj, symbolname, TYPE_PROCEDURE, &symaddr); |
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137 | DLDEBUG(2,PerlIO_printf(Perl_debug_log, " symbolref(PROCEDURE) = %x\n", symaddr)); |
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138 | |
139 | if (status == -1 && errno == 0) { /* try TYPE_DATA instead */ |
140 | status = shl_findsym(&obj, symbolname, TYPE_DATA, &symaddr); |
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141 | DLDEBUG(2,PerlIO_printf(Perl_debug_log, " symbolref(DATA) = %x\n", symaddr)); |
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142 | } |
143 | |
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144 | if (status == -1) { |
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145 | SaveError(aTHX_ "%s",(errno) ? Strerror(errno) : "Symbol not found") ; |
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146 | } else { |
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147 | sv_setiv( ST(0), PTR2IV(symaddr) ); |
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148 | } |
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149 | |
150 | |
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151 | void |
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152 | dl_undef_symbols() |
153 | PPCODE: |
154 | |
155 | |
156 | |
157 | # These functions should not need changing on any platform: |
158 | |
159 | void |
160 | dl_install_xsub(perl_name, symref, filename="$Package") |
161 | char * perl_name |
162 | void * symref |
163 | char * filename |
164 | CODE: |
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165 | DLDEBUG(2,PerlIO_printf(Perl_debug_log, "dl_install_xsub(name=%s, symref=%x)\n", |
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166 | perl_name, symref)); |
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167 | ST(0) = sv_2mortal(newRV((SV*)newXS(perl_name, |
168 | (void(*)(pTHX_ CV *))symref, |
169 | filename))); |
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170 | |
171 | |
172 | char * |
173 | dl_error() |
174 | CODE: |
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175 | dMY_CXT; |
176 | RETVAL = dl_last_error ; |
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177 | OUTPUT: |
178 | RETVAL |
179 | |
180 | # end. |