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#include <stdio.h>
#include <ctype.h>
#include <sys/types.h>
#include <sys/param.h>
#include <sys/stat.h>
#include <sys/file.h>
#include <dlfcn.h>
#ifdef sun
#include <sys/vnode.h>
#include <archives.h>
#endif
#ifdef linux
#include <unistd.h>
#include <sys/wait.h>
#endif
#ifndef linux
#include <sys/mode.h>
#endif
#ifdef __alpha
#include <c_asm.h>
#endif
#ifdef sgi
#define vfork fork
#endif
#if defined __alpha || defined sgi
#include <a.out.h>
#endif
#include <string.h>
caddr_t endv[22],wh;
#define round(x,s) (((x) + ((s)-1)) & ~((s)-1))
extern char *strchr();
static unsigned long epoints[20];
static unsigned long hd[20];
int maxlinked={0};
F2C(dynload)(ii,ename1,loaded_files,err)
int *ii;
char ename1[], loaded_files[];
int *err;
{
char str[1000] , tmp_file[80],*libs,*getenv();
int readsize, totalsize, diff, n, p, i, nalloc=0,last;
caddr_t end;
long op1, op2, r, results[2],op[2];
libs=getenv("SYSLIBS");
sprintf (str,"\nlinking %s defined in %s with Scilab \n",ename1,loaded_files);
Scistring(str);
strcpy (tmp_file, "/tmp/SCILABXXXXXX");
mktemp(tmp_file);
{
int pid, status, wpid, i;
char *s;
static char *argv[24] = {
/* 0 1 2 3 4 */
#ifdef sun
"/usr/ucb/ld", "-r", "-o", 0, 0
#else
#ifdef linux
"/usr/bin/ld", "-shared", "-o", 0, 0
#else
"/bin/ld", "-shared", "-o", 0, 0
#endif
#endif
#define TAILARG 4
};
argv[3] = tmp_file;
for (i = TAILARG, s = loaded_files; i < 99; ++i) {
argv[i] = s;
if (s = strchr(s, ' ')) {
*s = 0;
while (*++s == ' ');
} else
break;
if (*s == 0)
break;
}
if (libs) for (i = i+1, s = libs; i < 99; ++i) {
argv[i] = s;
if (s = strchr(s, ' ')) {
*s = 0;
while (*++s == ' ');
} else
break;
if (*s == 0)
break;
}
if ((pid = vfork()) == 0) {
execv(argv[0], argv);
_exit(1);
}
if (pid < 0) {
sprintf (str,"can't create new process: \n");
Scistring(str);
*err=1;
return;
}
while ((wpid = wait(&status)) != pid)
if (wpid < 0) {
sprintf (str,"no child !\n");
Scistring(str);
*err=1;
return;
}
if (status != 0) {
sprintf (str,"ld returned bad status: %x\n", status);
Scistring(str);
*err=1;
return;
}
}
{
void *hd1 = (void *) 0;
int (*fptr)(void);
static FILE *log = (FILE *) NULL;
/* this will load the shared library */
hd1 = dlopen(tmp_file, RTLD_NOW);
if ( hd1 == (void *) NULL || hd1 < (void *) 0 ) {
sprintf (str,"%s\n",dlerror());
Scistring(str);
*err=1;
return;
}
/* lookup the address of the function to be called */
epoints[*ii] = (unsigned long) dlsym(hd1, ename1);
if ( (unsigned long) dlsym(hd1, ename1) == 0 ){
sprintf (str,"not an entry point \n");
Scistring(str);
*err=1;
return;
}
if (*ii != maxlinked) {
dlclose((void *)(hd[*ii]));
return;
}
else
maxlinked=maxlinked+1;
hd[*ii]=(unsigned long)hd1;
}
return;
}
F2C(dyncall)(i,x0,x1,x2,x3,x4,x5,x6,x7,x8,x9,
y0,y1,y2,y3,y4,y5,y6,y7,y8,y9,
z0,z1,z2,z3,z4,z5,z6,z7,z8,z9)
int *i;
int *x0,*x1,*x2,*x3,*x4,*x5,*x6,*x7,*x8,*x9;
int *y0,*y1,*y2,*y3,*y4,*y5,*y6,*y7,*y8,*y9;
int *z0,*z1,*z2,*z3,*z4,*z5,*z6,*z7,*z8,*z9;
{
int (*epoint) ();
epoint = (int (*)())(epoints[*i]);
(*epoint)(x0,x1,x2,x3,x4,x5,x6,x7,x8,x9,
y0,y1,y2,y3,y4,y5,y6,y7,y8,y9,
z0,z1,z2,z3,z4,z5,z6,z7,z8,z9);
return;
}
getpath(name)
char name[];
{
struct stat stbuf;
short unsigned mode;
char *searchpath, buf[200];
char *getenv();
int kd, kf, j, i ,ok, km;
ok=kd=kf=0;
while (ok == 0) {
/* recherche de la fin d'une regle (: ou fin de chaine) */
while ((searchpath[kf] != ':')&&(searchpath[kf++] !='\0'))
;
if (searchpath[kf-1]=='\0') {
ok=1;
kf--;
}
/* recopie de cette regle en debut de buf */
j=0;
for (i=kd; i<kf; ) {
buf[j++]=searchpath[i++];
}
/* concatenation de la regle avec le nom du fichier */
buf[j++]='/';
i=0;
while ((name[i] != ' ')&& (name[i] != '\0')) {
buf[j++]=name[i++] ;
buf[j]='\0';
}
/* test d'existence du fichier deisgne par le path fourni par la
regle de recherche */
if (stat(buf,&stbuf) != -1) {
mode=stbuf.st_mode;
/* les tests suivants permettent de savoir si le fichier designe
par buf est executable ou non */
mode=mode-(128*(mode/128));
km=mode/16;
if (km != 2*(km/2)) {
strcpy(name,buf);
return;
}
mode=mode-16*km;
km=mode/8;
if (km != 2*(km/2)) {
strcpy(name,buf);
return;
}
km=mode-8*km;
if (km != 2*(km/2)) {
strcpy(name,buf);
return;
}
}
kf++;
kd=kf;
}
return;
}
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