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[perl5.git] / ext / DynaLoader / dl_hpux.xs
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1/*
2 * Author: Jeff Okamoto (okamoto@corp.hp.com)
75f92628 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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32static AV *dl_resolve_using = Nullav;
33
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34
35static void
cea2e8a9 36dl_private_init(pTHX)
a0d0e21e 37{
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38 (void)dl_generic_private_init(aTHX);
39 dl_resolve_using = get_av("DynaLoader::dl_resolve_using", 0x4);
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40}
41
42MODULE = DynaLoader PACKAGE = DynaLoader
43
44BOOT:
cea2e8a9 45 (void)dl_private_init(aTHX);
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46
47
48void *
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49dl_load_file(filename, flags=0)
50 char * filename
51 int flags
52 PREINIT:
a0d0e21e 53 shl_t obj = NULL;
8e07c86e 54 int i, max, bind_type;
ff7f3c60 55 CODE:
bf49b057 56 DLDEBUG(1,PerlIO_printf(Perl_debug_log, "dl_load_file(%s,%x):\n", filename,flags));
ff7f3c60 57 if (flags & 0x01)
cea2e8a9 58 Perl_warn(aTHX_ "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 /* BIND_NOSTART removed from bind_type because it causes the shared library's */
69 /* initialisers not to be run. This causes problems with all of the static objects */
70 /* in the library. */
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71#ifdef DEBUGGING
72 if (dl_debug)
73 bind_type |= BIND_VERBOSE;
74#endif /* DEBUGGING */
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75
76 max = AvFILL(dl_resolve_using);
77 for (i = 0; i <= max; i++) {
78 char *sym = SvPVX(*av_fetch(dl_resolve_using, i, 0));
bf49b057 79 DLDEBUG(1,PerlIO_printf(Perl_debug_log, "dl_load_file(%s) (dependent)\n", sym));
491527d0 80 obj = shl_load(sym, bind_type, 0L);
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81 if (obj == NULL) {
82 goto end;
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83 }
84 }
85
bf49b057 86 DLDEBUG(1,PerlIO_printf(Perl_debug_log, "dl_load_file(%s): ", filename));
491527d0 87 obj = shl_load(filename, bind_type, 0L);
75f92628 88
bf49b057 89 DLDEBUG(2,PerlIO_printf(Perl_debug_log, " libref=%x\n", obj));
75f92628 90end:
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91 ST(0) = sv_newmortal() ;
92 if (obj == NULL)
cea2e8a9 93 SaveError(aTHX_ "%s",Strerror(errno));
a0d0e21e 94 else
3175b8cd 95 sv_setiv( ST(0), PTR2IV(obj) );
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96
97
98void *
99dl_find_symbol(libhandle, symbolname)
100 void * libhandle
101 char * symbolname
102 CODE:
103 shl_t obj = (shl_t) libhandle;
104 void *symaddr = NULL;
105 int status;
106#ifdef __hp9000s300
46fc3d4c 107 symbolname = form("_%s", symbolname);
a0d0e21e 108#endif
bf49b057 109 DLDEBUG(2, PerlIO_printf(Perl_debug_log,
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110 "dl_find_symbol(handle=%lx, symbol=%s)\n",
111 (unsigned long) libhandle, symbolname));
112
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113 ST(0) = sv_newmortal() ;
114 errno = 0;
115
a0d0e21e 116 status = shl_findsym(&obj, symbolname, TYPE_PROCEDURE, &symaddr);
bf49b057 117 DLDEBUG(2,PerlIO_printf(Perl_debug_log, " symbolref(PROCEDURE) = %x\n", symaddr));
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118
119 if (status == -1 && errno == 0) { /* try TYPE_DATA instead */
120 status = shl_findsym(&obj, symbolname, TYPE_DATA, &symaddr);
bf49b057 121 DLDEBUG(2,PerlIO_printf(Perl_debug_log, " symbolref(DATA) = %x\n", symaddr));
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122 }
123
75f92628 124 if (status == -1) {
cea2e8a9 125 SaveError(aTHX_ "%s",(errno) ? Strerror(errno) : "Symbol not found") ;
75f92628 126 } else {
3175b8cd 127 sv_setiv( ST(0), PTR2IV(symaddr) );
75f92628 128 }
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129
130
8e07c86e 131void
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132dl_undef_symbols()
133 PPCODE:
134
135
136
137# These functions should not need changing on any platform:
138
139void
140dl_install_xsub(perl_name, symref, filename="$Package")
141 char * perl_name
142 void * symref
143 char * filename
144 CODE:
bf49b057 145 DLDEBUG(2,PerlIO_printf(Perl_debug_log, "dl_install_xsub(name=%s, symref=%x)\n",
a0d0e21e 146 perl_name, symref));
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147 ST(0) = sv_2mortal(newRV((SV*)newXS(perl_name,
148 (void(*)(pTHX_ CV *))symref,
149 filename)));
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150
151
152char *
153dl_error()
154 CODE:
155 RETVAL = LastError ;
156 OUTPUT:
157 RETVAL
158
159# end.