1/*
2 * Author: Jeff Okamoto (okamoto@corp.hp.com)
3 * Version: 2.1, 1995/1/25
4 */
5
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
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#define PERL_EXT
26#include "EXTERN.h"
27#define PERL_IN_DL_HPUX_XS
28#include "perl.h"
29#include "XSUB.h"
30
31typedef struct {
32    AV *	x_resolve_using;
33} my_cxtx_t;		/* this *must* be named my_cxtx_t */
34
35#define DL_CXT_EXTRA	/* ask for dl_cxtx to be defined in dlutils.c */
36#include "dlutils.c"	/* for SaveError() etc */
37
38#define dl_resolve_using	(dl_cxtx.x_resolve_using)
39
40static void
41dl_private_init(pTHX)
42{
43    (void)dl_generic_private_init(aTHX);
44    {
45	dMY_CXT;
46	dl_resolve_using = get_av("DynaLoader::dl_resolve_using", GV_ADDMULTI);
47    }
48}
49
50MODULE = DynaLoader     PACKAGE = DynaLoader
51
52BOOT:
53    (void)dl_private_init(aTHX);
54
55
56void
57dl_load_file(filename, flags=0)
58    char *	filename
59    int		flags
60    PREINIT:
61    shl_t obj = NULL;
62    int	i, max, bind_type;
63    dMY_CXT;
64    CODE:
65    DLDEBUG(1,PerlIO_printf(Perl_debug_log, "dl_load_file(%s,%x):\n", filename,flags));
66    if (flags & 0x01)
67	Perl_warn(aTHX_ "Can't make loaded symbols global on this platform while loading %s",filename);
68    if (dl_nonlazy) {
69      bind_type = BIND_IMMEDIATE|BIND_VERBOSE;
70    } else {
71      bind_type = BIND_DEFERRED;
72      /* For certain libraries, like DCE, deferred binding often causes run
73       * time problems.  Adding BIND_NONFATAL to BIND_IMMEDIATE still allows
74       * unresolved references in situations like this.  */
75      /* bind_type = BIND_IMMEDIATE|BIND_NONFATAL; */
76    }
77    /* BIND_NOSTART removed from bind_type because it causes the shared library's	*/
78    /* initialisers not to be run.  This causes problems with all of the static objects */
79    /* in the library.	   */
80#ifdef DEBUGGING
81    if (dl_debug)
82	bind_type |= BIND_VERBOSE;
83#endif /* DEBUGGING */
84
85    max = AvFILL(dl_resolve_using);
86    for (i = 0; i <= max; i++) {
87	char *sym = SvPVX(*av_fetch(dl_resolve_using, i, 0));
88	DLDEBUG(1,PerlIO_printf(Perl_debug_log, "dl_load_file(%s) (dependent)\n", sym));
89	obj = shl_load(sym, bind_type, 0L);
90	if (obj == NULL) {
91	    goto end;
92	}
93    }
94
95    DLDEBUG(1,PerlIO_printf(Perl_debug_log, "dl_load_file(%s): ", filename));
96    obj = shl_load(filename, bind_type, 0L);
97
98    DLDEBUG(2,PerlIO_printf(Perl_debug_log, " libref=%p\n", (void*)obj));
99end:
100    ST(0) = sv_newmortal() ;
101    if (obj == NULL)
102        SaveError(aTHX_ "%s",Strerror(errno));
103    else
104        sv_setiv( ST(0), PTR2IV(obj) );
105
106
107int
108dl_unload_file(libref)
109    void *	libref
110  CODE:
111    DLDEBUG(1,PerlIO_printf(Perl_debug_log, "dl_unload_file(%lx):\n", PTR2ul(libref)));
112    RETVAL = (shl_unload((shl_t)libref) == 0 ? 1 : 0);
113    if (!RETVAL)
114	SaveError(aTHX_ "%s", Strerror(errno));
115    DLDEBUG(2,PerlIO_printf(Perl_debug_log, " retval = %d\n", RETVAL));
116  OUTPUT:
117    RETVAL
118
119
120void
121dl_find_symbol(libhandle, symbolname, ign_err=0)
122    void *	libhandle
123    char *	symbolname
124    int   	ign_err
125    PREINIT:
126    shl_t obj = (shl_t) libhandle;
127    void *symaddr = NULL;
128    int status;
129    CODE:
130#ifdef __hp9000s300
131    symbolname = Perl_form_nocontext("_%s", symbolname);
132#endif
133    DLDEBUG(2, PerlIO_printf(Perl_debug_log,
134			     "dl_find_symbol(handle=%lx, symbol=%s)\n",
135			     (unsigned long) libhandle, symbolname));
136
137    ST(0) = sv_newmortal() ;
138    errno = 0;
139
140    status = shl_findsym(&obj, symbolname, TYPE_PROCEDURE, &symaddr);
141    DLDEBUG(2,PerlIO_printf(Perl_debug_log, "  symbolref(PROCEDURE) = %p\n", (void*)symaddr));
142
143    if (status == -1 && errno == 0) {	/* try TYPE_DATA instead */
144	status = shl_findsym(&obj, symbolname, TYPE_DATA, &symaddr);
145	DLDEBUG(2,PerlIO_printf(Perl_debug_log, "  symbolref(DATA) = %p\n", (void*)symaddr));
146    }
147
148    if (status == -1) {
149	if (!ign_err) SaveError(aTHX_ "%s",(errno) ? Strerror(errno) : "Symbol not found") ;
150    } else {
151	sv_setiv( ST(0), PTR2IV(symaddr) );
152    }
153
154
155void
156dl_undef_symbols()
157    CODE:
158
159
160
161# These functions should not need changing on any platform:
162
163void
164dl_install_xsub(perl_name, symref, filename="$Package")
165    char *	perl_name
166    void *	symref
167    const char *	filename
168    CODE:
169    DLDEBUG(2,PerlIO_printf(Perl_debug_log, "dl_install_xsub(name=%s, symref=%p)\n",
170                            perl_name, (void*)symref));
171    ST(0) = sv_2mortal(newRV((SV*)newXS_flags(perl_name,
172					      (void(*)(pTHX_ CV *))symref,
173					      filename, NULL,
174					      XS_DYNAMIC_FILENAME)));
175
176SV *
177dl_error()
178    CODE:
179    dMY_CXT;
180    RETVAL = newSVsv(MY_CXT.x_dl_last_error);
181    OUTPUT:
182    RETVAL
183
184#if defined(USE_ITHREADS)
185
186void
187CLONE(...)
188    CODE:
189    MY_CXT_CLONE;
190
191    PERL_UNUSED_VAR(items);
192
193    /* MY_CXT_CLONE just does a memcpy on the whole structure, so to avoid
194     * using Perl variables that belong to another thread, we create our
195     * own for this thread.
196     */
197    MY_CXT.x_dl_last_error = newSVpvs("");
198    dl_resolve_using = get_av("DynaLoader::dl_resolve_using", GV_ADDMULTI);
199
200#endif
201
202# end.
203