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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 | |
29 | |
30 | #include "dlutils.c" /* for SaveError() etc */ |
31 | |
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32 | static AV *dl_resolve_using = Nullav; |
33 | |
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34 | |
35 | static void |
36 | dl_private_init() |
37 | { |
38 | (void)dl_generic_private_init(); |
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39 | dl_resolve_using = perl_get_av("DynaLoader::dl_resolve_using", 0x4); |
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40 | } |
41 | |
42 | MODULE = DynaLoader PACKAGE = DynaLoader |
43 | |
44 | BOOT: |
45 | (void)dl_private_init(); |
46 | |
47 | |
48 | void * |
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49 | dl_load_file(filename, flags=0) |
50 | char * filename |
51 | int flags |
52 | PREINIT: |
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53 | shl_t obj = NULL; |
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54 | int i, max, bind_type; |
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55 | CODE: |
56 | DLDEBUG(1,PerlIO_printf(PerlIO_stderr(), "dl_load_file(%s,%x):\n", filename,flags)); |
57 | if (flags & 0x01) |
58 | warn("Can't make loaded symbols global on this platform while loading %s",filename); |
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59 | if (dl_nonlazy) { |
60 | bind_type = BIND_IMMEDIATE|BIND_VERBOSE; |
61 | } else { |
62 | bind_type = BIND_DEFERRED; |
63 | /* For certain libraries, like DCE, deferred binding often causes run |
64 | * time problems. Adding BIND_NONFATAL to BIND_IMMEDIATE still allows |
65 | * unresolved references in situations like this. */ |
66 | /* bind_type = BIND_IMMEDIATE|BIND_NONFATAL; */ |
67 | } |
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68 | #ifdef DEBUGGING |
69 | if (dl_debug) |
70 | bind_type |= BIND_VERBOSE; |
71 | #endif /* DEBUGGING */ |
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72 | |
73 | max = AvFILL(dl_resolve_using); |
74 | for (i = 0; i <= max; i++) { |
75 | char *sym = SvPVX(*av_fetch(dl_resolve_using, i, 0)); |
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76 | DLDEBUG(1,PerlIO_printf(PerlIO_stderr(), "dl_load_file(%s) (dependent)\n", sym)); |
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77 | obj = shl_load(sym, bind_type | BIND_NOSTART, 0L); |
78 | if (obj == NULL) { |
79 | goto end; |
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80 | } |
81 | } |
82 | |
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83 | DLDEBUG(1,PerlIO_printf(PerlIO_stderr(), "dl_load_file(%s): ", filename)); |
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84 | obj = shl_load(filename, bind_type | BIND_NOSTART, 0L); |
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85 | |
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86 | DLDEBUG(2,PerlIO_printf(PerlIO_stderr(), " libref=%x\n", obj)); |
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87 | end: |
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88 | ST(0) = sv_newmortal() ; |
89 | if (obj == NULL) |
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90 | SaveError("%s",Strerror(errno)); |
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91 | else |
92 | sv_setiv( ST(0), (IV)obj); |
93 | |
94 | |
95 | void * |
96 | dl_find_symbol(libhandle, symbolname) |
97 | void * libhandle |
98 | char * symbolname |
99 | CODE: |
100 | shl_t obj = (shl_t) libhandle; |
101 | void *symaddr = NULL; |
102 | int status; |
103 | #ifdef __hp9000s300 |
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104 | symbolname = form("_%s", symbolname); |
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105 | #endif |
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106 | DLDEBUG(2, PerlIO_printf(PerlIO_stderr(), |
107 | "dl_find_symbol(handle=%lx, symbol=%s)\n", |
108 | (unsigned long) libhandle, symbolname)); |
109 | |
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110 | ST(0) = sv_newmortal() ; |
111 | errno = 0; |
112 | |
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113 | status = shl_findsym(&obj, symbolname, TYPE_PROCEDURE, &symaddr); |
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114 | DLDEBUG(2,PerlIO_printf(PerlIO_stderr(), " symbolref(PROCEDURE) = %x\n", symaddr)); |
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115 | |
116 | if (status == -1 && errno == 0) { /* try TYPE_DATA instead */ |
117 | status = shl_findsym(&obj, symbolname, TYPE_DATA, &symaddr); |
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118 | DLDEBUG(2,PerlIO_printf(PerlIO_stderr(), " symbolref(DATA) = %x\n", symaddr)); |
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119 | } |
120 | |
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121 | if (status == -1) { |
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122 | SaveError("%s",(errno) ? Strerror(errno) : "Symbol not found") ; |
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123 | } else { |
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124 | sv_setiv( ST(0), (IV)symaddr); |
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125 | } |
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126 | |
127 | |
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128 | void |
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129 | dl_undef_symbols() |
130 | PPCODE: |
131 | |
132 | |
133 | |
134 | # These functions should not need changing on any platform: |
135 | |
136 | void |
137 | dl_install_xsub(perl_name, symref, filename="$Package") |
138 | char * perl_name |
139 | void * symref |
140 | char * filename |
141 | CODE: |
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142 | DLDEBUG(2,PerlIO_printf(PerlIO_stderr(), "dl_install_xsub(name=%s, symref=%x)\n", |
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143 | perl_name, symref)); |
144 | ST(0)=sv_2mortal(newRV((SV*)newXS(perl_name, (void(*)())symref, filename))); |
145 | |
146 | |
147 | char * |
148 | dl_error() |
149 | CODE: |
150 | RETVAL = LastError ; |
151 | OUTPUT: |
152 | RETVAL |
153 | |
154 | # end. |