158 lines
3.9 KiB
Plaintext
158 lines
3.9 KiB
Plaintext
/*
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* Author: Jeff Okamoto (okamoto@corp.hp.com)
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* Version: 2.1, 1995/1/25
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*/
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/* o Added BIND_VERBOSE to dl_nonlazy condition to add names of missing
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* symbols to stderr message on fatal error.
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*
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* o Added BIND_NONFATAL comment to default condition.
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*
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* Chuck Phillips (cdp@fc.hp.com)
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* Version: 2.2, 1997/5/4 */
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#ifdef __hp9000s300
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#define magic hpux_magic
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#define MAGIC HPUX_MAGIC
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#endif
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#include <dl.h>
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#ifdef __hp9000s300
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#undef magic
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#undef MAGIC
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#endif
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#include "EXTERN.h"
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#include "perl.h"
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#include "XSUB.h"
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#include "dlutils.c" /* for SaveError() etc */
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static AV *dl_resolve_using = Nullav;
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static void
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dl_private_init()
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{
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(void)dl_generic_private_init();
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dl_resolve_using = perl_get_av("DynaLoader::dl_resolve_using", 0x4);
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}
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MODULE = DynaLoader PACKAGE = DynaLoader
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BOOT:
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(void)dl_private_init();
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void *
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dl_load_file(filename, flags=0)
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char * filename
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int flags
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PREINIT:
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shl_t obj = NULL;
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int i, max, bind_type;
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CODE:
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DLDEBUG(1,PerlIO_printf(PerlIO_stderr(), "dl_load_file(%s,%x):\n", filename,flags));
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if (flags & 0x01)
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warn("Can't make loaded symbols global on this platform while loading %s",filename);
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if (dl_nonlazy) {
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bind_type = BIND_IMMEDIATE|BIND_VERBOSE;
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} else {
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bind_type = BIND_DEFERRED;
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/* For certain libraries, like DCE, deferred binding often causes run
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* time problems. Adding BIND_NONFATAL to BIND_IMMEDIATE still allows
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* unresolved references in situations like this. */
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/* bind_type = BIND_IMMEDIATE|BIND_NONFATAL; */
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}
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/* BIND_NOSTART removed from bind_type because it causes the shared library's */
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/* initialisers not to be run. This causes problems with all of the static objects */
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/* in the library. */
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#ifdef DEBUGGING
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if (dl_debug)
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bind_type |= BIND_VERBOSE;
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#endif /* DEBUGGING */
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max = AvFILL(dl_resolve_using);
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for (i = 0; i <= max; i++) {
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char *sym = SvPVX(*av_fetch(dl_resolve_using, i, 0));
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DLDEBUG(1,PerlIO_printf(PerlIO_stderr(), "dl_load_file(%s) (dependent)\n", sym));
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obj = shl_load(sym, bind_type, 0L);
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if (obj == NULL) {
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goto end;
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}
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}
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DLDEBUG(1,PerlIO_printf(PerlIO_stderr(), "dl_load_file(%s): ", filename));
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obj = shl_load(filename, bind_type, 0L);
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DLDEBUG(2,PerlIO_printf(PerlIO_stderr(), " libref=%x\n", obj));
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end:
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ST(0) = sv_newmortal() ;
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if (obj == NULL)
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SaveError("%s",Strerror(errno));
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else
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sv_setiv( ST(0), (IV)obj);
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void *
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dl_find_symbol(libhandle, symbolname)
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void * libhandle
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char * symbolname
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CODE:
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shl_t obj = (shl_t) libhandle;
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void *symaddr = NULL;
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int status;
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#ifdef __hp9000s300
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symbolname = form("_%s", symbolname);
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#endif
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DLDEBUG(2, PerlIO_printf(PerlIO_stderr(),
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"dl_find_symbol(handle=%lx, symbol=%s)\n",
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(unsigned long) libhandle, symbolname));
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ST(0) = sv_newmortal() ;
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errno = 0;
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status = shl_findsym(&obj, symbolname, TYPE_PROCEDURE, &symaddr);
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DLDEBUG(2,PerlIO_printf(PerlIO_stderr(), " symbolref(PROCEDURE) = %x\n", symaddr));
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if (status == -1 && errno == 0) { /* try TYPE_DATA instead */
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status = shl_findsym(&obj, symbolname, TYPE_DATA, &symaddr);
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DLDEBUG(2,PerlIO_printf(PerlIO_stderr(), " symbolref(DATA) = %x\n", symaddr));
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}
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if (status == -1) {
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SaveError("%s",(errno) ? Strerror(errno) : "Symbol not found") ;
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} else {
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sv_setiv( ST(0), (IV)symaddr);
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}
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void
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dl_undef_symbols()
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PPCODE:
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# These functions should not need changing on any platform:
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void
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dl_install_xsub(perl_name, symref, filename="$Package")
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char * perl_name
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void * symref
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char * filename
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CODE:
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DLDEBUG(2,PerlIO_printf(PerlIO_stderr(), "dl_install_xsub(name=%s, symref=%x)\n",
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perl_name, symref));
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ST(0)=sv_2mortal(newRV((SV*)newXS(perl_name, (void(*)())symref, filename)));
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char *
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dl_error()
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CODE:
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RETVAL = LastError ;
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OUTPUT:
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RETVAL
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# end.
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