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loadelf.c
447 lines (409 loc) · 12.6 KB
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loadelf.c
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/****************************************************************/
/* loadsave.sol.c
/* load an euslisp source code file
/* load a binary object file
/* save current running image to a file
/*
/* (c) T.Matsui, 1986
/****************************************************************/
static char *rcsid="@(#)$Id$";
#include <signal.h>
#include <ctype.h>
#include <sys/file.h>
#include <fcntl.h>
#include <dlfcn.h>
#if i86pc
#include <link.h>
#endif
#if alpha
#undef MAX
#undef MIN
#undef VMAX
#undef VMIN
#endif
#include "../c/eus.h"
extern int errno;
extern pointer openfile();
extern pointer makemodule(context *, int);
/****************************************************************/
/* load eus source
/* Caution!!!
/* This function does not ensure closing the input file,
/* if an error occurs during load.
/* So, this function should be used only for bootstrapping.
/* Safer loader using with-open-file is defined in loader.l.
/****************************************************************/
pointer SRCLOAD(ctx,n,argv)
register context *ctx;
int n;
pointer argv[];
{ pointer in,form;
ckarg(1);
in=openfile(ctx,(char *)argv[0]->c.str.chars,O_RDONLY,0,256);
vpush(in);
if (in==0) error(E_OPENFILE);
form=reader(ctx,in,NIL);
while (form!=(pointer)EOF){
/* prinx(ctx,form,ERROUT); flushstream(ERROUT); terpri(ERROUT);*/
/*fprintf(stderr, "%x\n", form);*/
eval(ctx,form);
form=reader(ctx,in,NIL);
}
closestream(in);
vpop();
return(NIL);}
/****************************************************************/
/* binload
/* dynamic shared object loader for EusLisp on Solaris
/* 1986-Jun-22
/* 1986-Oct-15 modified to accept compiled code
/* May/17/1994 reimplemetation using 'dl'
/****************************************************************
/* object module loader for Solaris 2.3
/* (system:binload
/* "object.o" "quote.q" "_entry")
/* 1987-April for sun3
/* 1987-December for vax ultrix
/* 1988-Nov nothing special for sony news
/* 1993-Jan Solaris 2.0 Elf... failed
/* 1994-May Solaris 2.3 dynamic linker (dl)
/****************************************************************/
#define MAX_SYSTEM_MODULES 100
int module_count=0;
struct {
pointer (*entry_func)();
char *module_name;}
module_initializers[MAX_SYSTEM_MODULES];
void add_module_initializer(name, entry)
char *name;
pointer (*entry)();
{
/* printf("%s %x is added in the module_initializer list\n", name, entry); */
if (module_count>=MAX_SYSTEM_MODULES) error(E_USER,(pointer)"too many system modules");
module_initializers[module_count].module_name= name;
module_initializers[module_count].entry_func= entry;
module_count++;}
/* exec_module_initializers is no longer called */
void exec_module_initializers(ctx)
register context *ctx;
{ eusinteger_t i, addr;
pointer (*initfunc)(context *, int, pointer *);
pointer mod;
for (i=0; i< module_count; i++) {
printf("executing init: %s at %p...",
module_initializers[i].module_name,
module_initializers[i].entry_func);
fflush(stdout);
initfunc=module_initializers[i].entry_func;
mod=makemodule(ctx,0);
vpush(mod);
breakck;
if (initfunc) {
addr = (eusinteger_t)initfunc;
addr= addr>>2;
mod->c.ldmod.entry=makeint(addr);
#if ARM
mod->c.ldmod.entry2=makeint(((eusinteger_t)initfunc)&0x3);
#endif
mod->c.ldmod.subrtype=SUBR_ENTRY;
(*initfunc)(ctx,1, &mod); }
vpop();
printf(" ok\n");}
module_count=0;}
#if Solaris2 && !GCC
pointer list_module_initializers(ctx,initnames)
context *ctx;
pointer initnames;
{ int i, addr;
pointer (*initfunc)(int, pointer *);
pointer mod, modname, p;
for (i=0; i<module_count; i++) {
initfunc=module_initializers[i].entry_func;
modname=makestring(module_initializers[i].module_name,
strlen(module_initializers[i].module_name));
vpush(modname);
addr= (int)initfunc; addr >>=2;
mod=makemodule(ctx,0);
mod->c.ldmod.codevec=makeint(0);
mod->c.ldmod.entry=makeint(addr);
mod->c.ldmod.subrtype=SUBR_FUNCTION;
if (debug)
printf("collecting init: %s at %x module at %x\n",
module_initializers[i].module_name,
module_initializers[i].entry_func, mod);
p=cons(ctx,mod, NIL);
p=cons(ctx,vpop(), p); /* (list modname mod) */
vpush(p);}
p=(pointer)stacknlist(ctx,module_count);
module_count=0;
return(p);}
#else
pointer list_module_initializers(ctx, initnames)
context *ctx;
pointer initnames;
{ int i;
eusinteger_t addr;
pointer (*initfunc)(int, pointer *);
pointer mod, modname, p;
void *dlhandle;
char namebuf[256];
dlhandle=dlopen(0,RTLD_LAZY|RTLD_GLOBAL);
if (dlhandle==NULL) {
fprintf(stderr, "cannot dlopen self\n"); exit(2);}
module_count=0;
while (iscons(initnames)) {
/* printf("%s ", ccar(initnames)->c.str.chars); */
initfunc= dlsym(dlhandle, (char *)ccar(initnames)->c.str.chars);
if (initfunc==NULL) {
sprintf(namebuf,"___%s",ccar(initnames)->c.str.chars);
initfunc=dlsym(dlhandle, namebuf);}
if (initfunc) {
/* printf(" ok\n"); */
modname=ccar(initnames);
vpush(modname);
addr= (eusinteger_t)initfunc; addr >>=2;/* ???? */
mod=makemodule(ctx,0);
mod->c.ldmod.codevec=makeint(0);
mod->c.ldmod.entry=makeint(addr);
#if ARM
mod->c.ldmod.entry2=makeint(((eusinteger_t)initfunc)&0x3);
#endif
mod->c.ldmod.subrtype=SUBR_FUNCTION;
p=cons(ctx,mod, NIL);
p=cons(ctx,vpop(), p); /* (list modname mod) */
vpush(p); module_count++;
}
/* else {
printf("%s not loaded\n", ccar(initnames)->c.str.chars);}*/
initnames=ccdr(initnames); }
p=(pointer)stacknlist(ctx,module_count);
module_count=0;
return(p);}
pointer list_module_initializers2(ctx, n, argv)
register context *ctx;
int n;
pointer *argv;
{ int i;
eusinteger_t addr;
pointer (*initfunc)(int, pointer *);
pointer mod, modname, initnames, p;
void *dlhandle;
char namebuf[256];
ckarg(2);
if (!isldmod(argv[0])) error(E_USER,(pointer)"not a LOAD-MODULE");
if (!iscons(argv[1])) error(E_NOLIST);
#if (WORD_SIZE == 64)
dlhandle=(void *)((eusinteger_t)(argv[0]->c.ldmod.handle) & ~3L);
#else
dlhandle=(void *)((eusinteger_t)(argv[0]->c.ldmod.handle) & ~3);
#endif
initnames=argv[1];
module_count=0;
if (dlhandle==NULL) error(E_USER,(pointer)"This module was not loaded");
while (iscons(initnames)) {
initfunc= dlsym(dlhandle, (char *)ccar(initnames)->c.str.chars);
if (initfunc==NULL) {
sprintf(namebuf,"___%s",ccar(initnames)->c.str.chars);
initfunc=dlsym(dlhandle, namebuf);}
if (initfunc) {
modname=ccar(initnames);
vpush(modname);
addr= (eusinteger_t)initfunc; addr >>=2;/* ???? */
mod=makemodule(ctx,0);
mod->c.ldmod.codevec=makeint(0);
mod->c.ldmod.entry=makeint(addr);
#if ARM
mod->c.ldmod.entry2=makeint(((eusinteger_t)initfunc)&0x3);
#endif
mod->c.ldmod.subrtype=SUBR_FUNCTION;
p=cons(ctx,mod, NIL);
p=cons(ctx,vpop(), p); /* (list modname mod) */
vpush(p); module_count++;}
else {
printf("%s not loaded\n", ccar(initnames)->c.str.chars); }
initnames=ccdr(initnames); }
p=(pointer)stacknlist(ctx,module_count);
module_count=0;
return(p);}
#endif
pointer build_quote_vector(ctx,size, strings)
register context *ctx;
int size;
char *strings[];
{ pointer qvec, p, qstring, qstream;
int i, k;
qvec=makevector(C_VECTOR,size);
vpush(qvec);
qstream=(pointer)mkstream(ctx,K_IN,makestring("",0));
vpush(qstream);
for (i=0; i<size; i++) {
k=strlen((char *)strings[i]);
qstring=makestring(strings[i], k);
/*prinx(ctx,qstring, STDOUT); terpri(STDOUT); */
pointer_update(qstream->c.stream.buffer,qstring);
qstream->c.stream.count=makeint(0);
qstream->c.stream.tail=makeint(k);
pointer_update(qvec->c.vec.v[i],reader(ctx,qstream, NIL));}
vpop();
vpop();
/* prinx(ctx,qvec, STDOUT); */
#ifdef SAFETY
take_care(qvec);
#endif
return(qvec);}
pointer eval_c_strings(ctx,size, strings)
register context *ctx;
int size;
const char *strings[];
{ pointer p, qstream, qstring;
int i, k, total_length;
char *s;
byte *d;
total_length=size;
for (i=0; i<size; i++) { total_length += strlen(strings[i]); }
qstring = makebuffer(total_length);
vpush(qstring);
d=qstring->c.str.chars;
for (i=0; i<size; i++) {
s=(char *)strings[i];
while (*s) *d++ = *s++;
*d++= '\n';} /* newline is needed to ensure the reader
to stop ignoring comments */
qstream=(pointer)mkstream(ctx,K_IN, qstring);
vpush(qstream);
qstream->c.stream.tail=makeint(total_length);
while ((p=reader(ctx,qstream, NIL))!= (pointer)(-1)) {
if (debug) { prinx(ctx,p,STDOUT); terpri(STDOUT); }
p=eval(ctx,p);}
vpop();
vpop();
return(p);}
pointer FIND_ENTRY(ctx,n,argv)
register context *ctx;
int n;
pointer argv[];
{ pointer entry, mod;
char *entry_string;
extern pointer sysmod;
ckarg2(1,2);
if (n==2) mod=argv[1];
else mod=sysmod;
if (!isldmod(mod)) error(E_USER,(pointer)"not a LOAD-MODULE");
entry_string=(char *)get_string(argv[0]);
#if (WORD_SIZE == 64)
entry=(pointer)dlsym((void *)((eusinteger_t)(mod->c.ldmod.handle) & ~3L), entry_string);
#else
entry=(pointer)dlsym((void *)((eusinteger_t)(mod->c.ldmod.handle) & ~3), entry_string);
#endif
if (entry==NULL) return(NIL);
else return(makeint((eusinteger_t)entry>>2));}
pointer FIND_ENTRY2(ctx,n,argv)
register context *ctx;
int n;
pointer argv[];
{ pointer entry, mod, e=NIL;
char *entry_string;
extern pointer sysmod;
ckarg2(1,2);
if (n==2) mod=argv[1];
else mod=sysmod;
if (!isldmod(mod)) error(E_USER,(pointer)"not a LOAD-MODULE");
entry_string=(char *)get_string(argv[0]);
#if (WORD_SIZE == 64)
entry=(pointer)dlsym((void *)((eusinteger_t)(mod->c.ldmod.handle) & ~3L), entry_string);
#else
entry=(pointer)dlsym((void *)((eusinteger_t)(mod->c.ldmod.handle) & ~3), entry_string);
#endif
if (entry==NULL) return(NIL);
else {
e=cons(ctx,makeint((eusinteger_t)entry),e);
e=cons(ctx,makeint((eusinteger_t)entry>>2),e);
return(e);}}
extern pointer sysmod;
pointer SYSMOD()
{ return(sysmod);}
pointer UNBINLOAD(ctx,n,argv)
register context *ctx;
int n;
pointer *argv;
{ register pointer mod=argv[0];
register int stat;
ckarg(1);
if (!isldmod(mod)) error(E_USER,(pointer)"not a compiled-module");
#if (WORD_SIZE == 64)
stat=dlclose((void *)((eusinteger_t)(mod->c.ldmod.handle) & ~3L));
#else
stat=dlclose((void *)((eusinteger_t)(mod->c.ldmod.handle) & ~3));
#endif
if (stat) return(makeint(-errno));
else return(T);}
pointer BINLOAD(ctx,n,argv)
register context *ctx;
int n;
pointer *argv;
{ char *binfn, *quofn; /*binary and quote file names*/
char *entry;
int binfd,size,newsize,stat,i=0,l,s;
pointer mod,quostrm,qvec;
byte *loadaddress;
pointer (*initfunc)(context *, int, pointer *);
int data_align=0;
eusinteger_t dlhandle, addr;
ckarg2(1,2);
binfn= (char *)get_string(argv[0]);
if (n==2) {
if (argv[1]==NIL) entry=NULL;
else entry=(char *)get_string(argv[1]);}
else entry=NULL;
dlhandle=(eusinteger_t)dlopen(binfn, RTLD_LAZY|RTLD_GLOBAL);/* ???? */
if (dlhandle == 0) {
fprintf(stderr,"BINLOAD cannot dlopen: %s\n", dlerror());
return(NIL);}
initfunc=NULL;
if (entry) {
initfunc=(pointer (*)(context *, int, pointer *))dlsym((void *)dlhandle, entry);
if (initfunc==NULL)
initfunc=(pointer (*)(context *, int, pointer *))dlsym((void *)dlhandle, &entry[3]);
/* if (initfunc==NULL) fprintf(stderr, ";; entry not found\n");*/
}
mod=makemodule(ctx,0);
pointer_update(mod->c.ldmod.objname,argv[0]);
mod->c.ldmod.handle=makeint(dlhandle>>2);
vpush(mod);
/*call initializer*/
breakck;
if (initfunc) {
addr=(eusinteger_t)initfunc; addr >>=2;/* ???? */
mod->c.ldmod.codevec=makeint(0);
mod->c.ldmod.entry=makeint(addr);
#if ARM
mod->c.ldmod.entry2=makeint(((eusinteger_t)initfunc)&0x3);
#endif
mod->c.ldmod.subrtype=SUBR_FUNCTION;
(*initfunc)(ctx, 1, &mod); }
else if (debug) fprintf(stderr,";; no initializer\n");
return(vpop()); /* return the module */
}
pointer SAVE(ctx,n,argv)
register context *ctx;
int n;
pointer argv[];
{ error(E_USER,(pointer)"SAVE is not supported on Solaris");}
void loadsave(ctx,mod)
register context *ctx;
pointer mod;
{ pointer p=Spevalof(PACKAGE);
pointer_update(Spevalof(PACKAGE),syspkg);
defun(ctx,"SRCLOAD",mod,SRCLOAD,NULL);
#if Solaris2 && !GCC
defun(ctx,"LIST-MODULE-INITIALIZERS",mod,list_module_initializers,NULL);
#else
defun(ctx,"LIST-MODULE-INITIALIZERS",mod,list_module_initializers2,NULL);
#endif
defun(ctx,"FIND-ENTRY", mod, FIND_ENTRY,NULL);
defun(ctx,"FIND-ENTRY2", mod, FIND_ENTRY2,NULL);
defun(ctx,"SYSMOD", mod, SYSMOD,NULL);
defun(ctx,"BINLOAD",mod,BINLOAD,NULL);
defun(ctx,"UNBINLOAD",mod,UNBINLOAD,NULL);
defun(ctx,"SAVE",mod,SAVE,NULL);
pointer_update(Spevalof(PACKAGE),p);}