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/*
* Author: Jeff Okamoto (okamoto@corp.hp.com)
* Version: 2.1, 1995/1/25
*/
/* o Added BIND_VERBOSE to dl_nonlazy condition to add names of missing
* symbols to stderr message on fatal error.
*
* o Added BIND_NONFATAL comment to default condition.
*
* Chuck Phillips (cdp@fc.hp.com)
* Version: 2.2, 1997/5/4 */
#ifdef __hp9000s300
#define magic hpux_magic
#define MAGIC HPUX_MAGIC
#endif
#include <dl.h>
#ifdef __hp9000s300
#undef magic
#undef MAGIC
#endif
#include "EXTERN.h"
#include "perl.h"
#include "XSUB.h"
typedef struct {
AV * x_resolve_using;
} my_cxtx_t; /* this *must* be named my_cxtx_t */
#define DL_CXT_EXTRA /* ask for dl_cxtx to be defined in dlutils.c */
#include "dlutils.c" /* for SaveError() etc */
#define dl_resolve_using (dl_cxtx.x_resolve_using)
static void
dl_private_init(pTHX)
{
(void)dl_generic_private_init(aTHX);
{
dMY_CXT;
dl_resolve_using = get_av("DynaLoader::dl_resolve_using", GV_ADDMULTI);
}
}
MODULE = DynaLoader PACKAGE = DynaLoader
BOOT:
(void)dl_private_init(aTHX);
void *
dl_load_file(filename, flags=0)
char * filename
int flags
PREINIT:
shl_t obj = NULL;
int i, max, bind_type;
dMY_CXT;
CODE:
DLDEBUG(1,PerlIO_printf(Perl_debug_log, "dl_load_file(%s,%x):\n", filename,flags));
if (flags & 0x01)
Perl_warn(aTHX_ "Can't make loaded symbols global on this platform while loading %s",filename);
if (dl_nonlazy) {
bind_type = BIND_IMMEDIATE|BIND_VERBOSE;
} else {
bind_type = BIND_DEFERRED;
/* For certain libraries, like DCE, deferred binding often causes run
* time problems. Adding BIND_NONFATAL to BIND_IMMEDIATE still allows
* unresolved references in situations like this. */
/* bind_type = BIND_IMMEDIATE|BIND_NONFATAL; */
}
/* BIND_NOSTART removed from bind_type because it causes the shared library's */
/* initialisers not to be run. This causes problems with all of the static objects */
/* in the library. */
#ifdef DEBUGGING
if (dl_debug)
bind_type |= BIND_VERBOSE;
#endif /* DEBUGGING */
max = AvFILL(dl_resolve_using);
for (i = 0; i <= max; i++) {
char *sym = SvPVX(*av_fetch(dl_resolve_using, i, 0));
DLDEBUG(1,PerlIO_printf(Perl_debug_log, "dl_load_file(%s) (dependent)\n", sym));
obj = shl_load(sym, bind_type, 0L);
if (obj == NULL) {
goto end;
}
}
DLDEBUG(1,PerlIO_printf(Perl_debug_log, "dl_load_file(%s): ", filename));
obj = shl_load(filename, bind_type, 0L);
DLDEBUG(2,PerlIO_printf(Perl_debug_log, " libref=%x\n", obj));
end:
ST(0) = sv_newmortal() ;
if (obj == NULL)
SaveError(aTHX_ "%s",Strerror(errno));
else
sv_setiv( ST(0), PTR2IV(obj) );
int
dl_unload_file(libref)
void * libref
CODE:
DLDEBUG(1,PerlIO_printf(Perl_debug_log, "dl_unload_file(%lx):\n", PTR2ul(libref)));
RETVAL = (shl_unload(libref) == 0 ? 1 : 0);
if (!RETVAL)
SaveError(aTHX_ "%s", Strerror(errno));
DLDEBUG(2,PerlIO_printf(Perl_debug_log, " retval = %d\n", RETVAL));
OUTPUT:
RETVAL
void *
dl_find_symbol(libhandle, symbolname)
void * libhandle
char * symbolname
CODE:
shl_t obj = (shl_t) libhandle;
void *symaddr = NULL;
int status;
#ifdef __hp9000s300
symbolname = Perl_form_nocontext("_%s", symbolname);
#endif
DLDEBUG(2, PerlIO_printf(Perl_debug_log,
"dl_find_symbol(handle=%lx, symbol=%s)\n",
(unsigned long) libhandle, symbolname));
ST(0) = sv_newmortal() ;
errno = 0;
status = shl_findsym(&obj, symbolname, TYPE_PROCEDURE, &symaddr);
DLDEBUG(2,PerlIO_printf(Perl_debug_log, " symbolref(PROCEDURE) = %x\n", symaddr));
if (status == -1 && errno == 0) { /* try TYPE_DATA instead */
status = shl_findsym(&obj, symbolname, TYPE_DATA, &symaddr);
DLDEBUG(2,PerlIO_printf(Perl_debug_log, " symbolref(DATA) = %x\n", symaddr));
}
if (status == -1) {
SaveError(aTHX_ "%s",(errno) ? Strerror(errno) : "Symbol not found") ;
} else {
sv_setiv( ST(0), PTR2IV(symaddr) );
}
void
dl_undef_symbols()
PPCODE:
# These functions should not need changing on any platform:
void
dl_install_xsub(perl_name, symref, filename="$Package")
char * perl_name
void * symref
const char * filename
CODE:
DLDEBUG(2,PerlIO_printf(Perl_debug_log, "dl_install_xsub(name=%s, symref=%x)\n",
perl_name, symref));
ST(0) = sv_2mortal(newRV((SV*)newXS_flags(perl_name,
(void(*)(pTHX_ CV *))symref,
filename, NULL,
XS_DYNAMIC_FILENAME)));
char *
dl_error()
CODE:
dMY_CXT;
RETVAL = dl_last_error ;
OUTPUT:
RETVAL
#if defined(USE_ITHREADS)
void
CLONE(...)
CODE:
MY_CXT_CLONE;
/* MY_CXT_CLONE just does a memcpy on the whole structure, so to avoid
* using Perl variables that belong to another thread, we create our
* own for this thread.
*/
MY_CXT.x_dl_last_error = newSVpvn("", 0);
dl_resolve_using = get_av("DynaLoader::dl_resolve_using", GV_ADDMULTI);
#endif
# end.
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