ext/DynaLoader/dl_mpeix.xs

   1 /*
   2  * Author:  Mark Klein (mklein@dis.com)
   3  * Version: 2.1, 1996/07/25
   4  * Version: 2.2, 1997/09/25 Mark Bixby (markb@cccd.edu)
   5  * Version: 2.3, 1998/11/19 Mark Bixby (markb@cccd.edu)
   6  */
   7
   8 #include "EXTERN.h"
   9 #include "perl.h"
  10 #include "XSUB.h"
  11
  12 #ifdef __GNUC__
  13 extern void HPGETPROCPLABEL(    int    parms,
  14                                 char * procname,
  15                                 int  * plabel,
  16                                 int  * status,
  17                                 char * firstfile,
  18                                 int    casesensitive,
  19                                 int    symboltype,
  20                                 int  * datasize,
  21                                 int    position,
  22                                 int    searchpath,
  23                                 int    binding);
  24 #else
  25 #pragma intrinsic HPGETPROCPLABEL
  26 #endif
  27 #include "dlutils.c"    /* for SaveError() etc */
  28
  29 typedef struct {
  30   char  filename[PATH_MAX + 3];
  31   } t_mpe_dld, *p_mpe_dld;
  32
  33 static void
  34 dl_private_init(pTHX)
  35 {
  36     (void)dl_generic_private_init(aTHX);
  37 }
  38
  39 MODULE = DynaLoader     PACKAGE = DynaLoader
  40
  41 BOOT:
  42     (void)dl_private_init(aTHX);
  43
  44 void *
  45 dl_load_file(filename, flags=0)
  46     char *      filename
  47     int         flags
  48     PREINIT:
  49     char                buf[PATH_MAX + 3];
  50     p_mpe_dld           obj = NULL;
  51
  52     CODE:
  53     DLDEBUG(1,PerlIO_printf(Perl_debug_log, "dl_load_file(%s,%x):\n", filename,
  54 flags));
  55     if (flags & 0x01)
  56         Perl_warn(aTHX_ "Can't make loaded symbols global on this platform while loading %s
  57 ",filename);
  58     obj = (p_mpe_dld) safemalloc(sizeof(t_mpe_dld));
  59     memzero(obj, sizeof(t_mpe_dld));
  60     if (filename[0] != '/')
  61         {
  62         getcwd(buf,sizeof(buf));
  63         sprintf(obj->filename," %s/%s ",buf,filename);
  64         }
  65     else
  66         sprintf(obj->filename," %s ",filename);
  67
  68     DLDEBUG(2,PerlIO_printf(Perl_debug_log," libref=%x\n", obj));
  69
  70     ST(0) = sv_newmortal() ;
  71     if (obj == NULL)
  72         SaveError(aTHX_"%s",Strerror(errno));
  73     else
  74         sv_setiv( ST(0), PTR2IV(obj) );
  75
  76 void *
  77 dl_find_symbol(libhandle, symbolname)
  78     void *      libhandle
  79     char *      symbolname
  80     CODE:
  81     int       datalen;
  82     p_mpe_dld obj = (p_mpe_dld) libhandle;
  83     char      symname[PATH_MAX + 3];
  84     void *    symaddr = NULL;
  85     int       status;
  86     DLDEBUG(2,PerlIO_printf(Perl_debug_log,"dl_find_symbol(handle=%x, symbol=%s)\n",
  87                 libhandle, symbolname));
  88     ST(0) = sv_newmortal() ;
  89     errno = 0;
  90
  91     sprintf(symname, " %s ", symbolname);
  92     HPGETPROCPLABEL(8, symname, &symaddr, &status, obj->filename, 1,
  93                     0, &datalen, 1, 0, 0);
  94
  95     DLDEBUG(2,PerlIO_printf(Perl_debug_log,"  symbolref(PROCEDURE) = %x, status=%x\n", symaddr, status));
  96
  97     if (status != 0) {
  98         SaveError(aTHX_"%s",(errno) ? Strerror(errno) : "Symbol not found") ;
  99     } else {
 100         sv_setiv( ST(0), PTR2IV(symaddr) );
 101     }
 102
 103 void
 104 dl_undef_symbols()
 105     PPCODE:
 106
 107 # These functions should not need changing on any platform:
 108
 109 void
 110 dl_install_xsub(perl_name, symref, filename="$Package")
 111     char *      perl_name
 112     void *      symref
 113     char *      filename
 114     CODE:
 115     DLDEBUG(2,PerlIO_printf(Perl_debug_log,"dl_install_xsub(name=%s, symref=%x)\n",
 116             perl_name, symref));
 117     ST(0) = sv_2mortal(newRV((SV*)newXS(perl_name,
 118                                         (void(*)(pTHX_ CV *))symref,
 119                                         filename)));
 120
 121 char *
 122 dl_error()
 123     CODE:
 124     dMY_CXT;
 125     RETVAL = dl_last_error ;
 126     OUTPUT:
 127     RETVAL
 128
 129 # end.