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/* dl_os2.xs
*
* Platform: OS/2.
* Author: Andreas Kaiser (ak@ananke.s.bawue.de)
* Created: 08th December 1994
*/
#include "EXTERN.h"
#include "perl.h"
#include "XSUB.h"
#define INCL_BASE
#include <os2.h>
#include "dlutils.c" /* SaveError() etc */
static ULONG retcode;
static void *
dlopen(char *path, int mode)
{
HMODULE handle;
char tmp[260], *beg, *dot;
char fail[300];
ULONG rc;
if ((rc = DosLoadModule(fail, sizeof fail, path, &handle)) == 0)
return (void *)handle;
retcode = rc;
/* Not found. Check for non-FAT name and try truncated name. */
/* Don't know if this helps though... */
for (beg = dot = path + strlen(path);
beg > path && !strchr(":/\\", *(beg-1));
beg--)
if (*beg == '.')
dot = beg;
if (dot - beg > 8) {
int n = beg+8-path;
memmove(tmp, path, n);
memmove(tmp+n, dot, strlen(dot)+1);
if (DosLoadModule(fail, sizeof fail, tmp, &handle) == 0)
return (void *)handle;
}
return NULL;
}
static void *
dlsym(void *handle, char *symbol)
{
ULONG rc, type;
PFN addr;
rc = DosQueryProcAddr((HMODULE)handle, 0, symbol, &addr);
if (rc == 0) {
rc = DosQueryProcType((HMODULE)handle, 0, symbol, &type);
if (rc == 0 && type == PT_32BIT)
return (void *)addr;
rc = ERROR_CALL_NOT_IMPLEMENTED;
}
retcode = rc;
return NULL;
}
static char *
dlerror(void)
{
static char buf[300];
ULONG len;
if (retcode == 0)
return NULL;
if (DosGetMessage(NULL, 0, buf, sizeof buf - 1, retcode, "OSO001.MSG", &len))
sprintf(buf, "OS/2 system error code %d", retcode);
else
buf[len] = '\0';
retcode = 0;
return buf;
}
static void
dl_private_init()
{
(void)dl_generic_private_init();
}
static char *
mod2fname(sv)
SV *sv;
{
static char fname[9];
int pos = 7;
int len;
AV *av;
SV *svp;
char *s;
if (!SvROK(sv)) croak("Not a reference given to mod2fname");
sv = SvRV(sv);
if (SvTYPE(sv) != SVt_PVAV)
croak("Not array reference given to mod2fname");
if (av_len((AV*)sv) < 0)
croak("Empty array reference given to mod2fname");
s = SvPV(*av_fetch((AV*)sv, av_len((AV*)sv), FALSE), na);
strncpy(fname, s, 8);
if ((len=strlen(s)) < 7) pos = len;
fname[pos] = '_';
fname[pos + 1] = '\0';
return (char *)fname;
}
MODULE = DynaLoader PACKAGE = DynaLoader
BOOT:
(void)dl_private_init();
void *
dl_load_file(filename)
char * filename
CODE:
int mode = 1; /* Solaris 1 */
#ifdef RTLD_LAZY
mode = RTLD_LAZY; /* Solaris 2 */
#endif
DLDEBUG(1,fprintf(stderr,"dl_load_file(%s):\n", filename));
RETVAL = dlopen(filename, mode) ;
DLDEBUG(2,fprintf(stderr," libref=%x\n", RETVAL));
ST(0) = sv_newmortal() ;
if (RETVAL == NULL)
SaveError("%s",dlerror()) ;
else
sv_setiv( ST(0), (IV)RETVAL);
void *
dl_find_symbol(libhandle, symbolname)
void * libhandle
char * symbolname
CODE:
#ifdef DLSYM_NEEDS_UNDERSCORE
char symbolname_buf[1024];
symbolname = dl_add_underscore(symbolname, symbolname_buf);
#endif
DLDEBUG(2,fprintf(stderr,"dl_find_symbol(handle=%x, symbol=%s)\n",
libhandle, symbolname));
RETVAL = dlsym(libhandle, symbolname);
DLDEBUG(2,fprintf(stderr," symbolref = %x\n", RETVAL));
ST(0) = sv_newmortal() ;
if (RETVAL == NULL)
SaveError("%s",dlerror()) ;
else
sv_setiv( ST(0), (IV)RETVAL);
void
dl_undef_symbols()
PPCODE:
char *
mod2fname(sv)
SV *sv;
# These functions should not need changing on any platform:
void
dl_install_xsub(perl_name, symref, filename="$Package")
char * perl_name
void * symref
char * filename
CODE:
DLDEBUG(2,fprintf(stderr,"dl_install_xsub(name=%s, symref=%x)\n",
perl_name, symref));
ST(0)=sv_2mortal(newRV((SV*)newXS(perl_name, (void(*)())symref, filename)));
char *
dl_error()
CODE:
RETVAL = LastError ;
OUTPUT:
RETVAL
# end.
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