mirror of
https://git.savannah.gnu.org/git/guile.git
synced 2025-05-06 23:50:18 +02:00
1e598865e9
gdb_interface.h, gdbint.c, gdbint.h, gh_data.c, gh_init.c, gh_io.c, gh_list.c, gh_predicates.c, gh_test_c.c, gh_test_repl.c, init.c, net_db.c, options.c, options.h, ports.c, print.c, read.c, script.h, snarf.h, srcprop.c, srcprop.h, stacks.c, stacks.h, throw.c: Update copyright years; these files have been worked on significantly in 1997, but only had copyright years for 1996. Also, change name of copyright holder on some from Mikael Djurfeldt to Free Software Foundation; he has signed papers assigning the changes to the FSF.
502 lines
14 KiB
C
502 lines
14 KiB
C
/* Copyright (C) 1995,1996,1997 Free Software Foundation, Inc.
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2, or (at your option)
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* any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this software; see the file COPYING. If not, write to
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* the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA.
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*
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* As a special exception, the Free Software Foundation gives permission
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* for additional uses of the text contained in its release of GUILE.
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*
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* The exception is that, if you link the GUILE library with other files
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* to produce an executable, this does not by itself cause the
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* resulting executable to be covered by the GNU General Public License.
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* Your use of that executable is in no way restricted on account of
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* linking the GUILE library code into it.
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*
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* This exception does not however invalidate any other reasons why
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* the executable file might be covered by the GNU General Public License.
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*
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* This exception applies only to the code released by the
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* Free Software Foundation under the name GUILE. If you copy
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* code from other Free Software Foundation releases into a copy of
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* GUILE, as the General Public License permits, the exception does
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* not apply to the code that you add in this way. To avoid misleading
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* anyone as to the status of such modified files, you must delete
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* this exception notice from them.
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*
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* If you write modifications of your own for GUILE, it is your choice
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* whether to permit this exception to apply to your modifications.
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* If you do not wish that, delete this exception notice.
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*/
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#include <stdio.h>
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#include "_scm.h"
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/* Everybody has an init function. */
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#include "alist.h"
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#include "append.h"
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#include "arbiters.h"
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#include "async.h"
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#include "backtrace.h"
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#include "boolean.h"
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#include "chars.h"
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#include "continuations.h"
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#ifdef DEBUG_EXTENSIONS
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#include "debug.h"
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#endif
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#include "dynl.h"
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#include "dynwind.h"
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#include "eq.h"
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#include "error.h"
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#include "eval.h"
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#include "feature.h"
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#include "filesys.h"
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#include "fports.h"
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#include "gc.h"
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#include "gdbint.h"
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#include "gsubr.h"
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#include "hash.h"
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#include "hashtab.h"
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#include "ioext.h"
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#include "kw.h"
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#include "list.h"
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#include "load.h"
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#include "mallocs.h"
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#include "mbstrings.h"
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#include "net_db.h"
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#include "numbers.h"
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#include "objprop.h"
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#include "options.h"
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#include "pairs.h"
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#include "ports.h"
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#include "posix.h"
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#include "print.h"
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#include "procprop.h"
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#include "procs.h"
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#include "ramap.h"
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#include "read.h"
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#include "scmsigs.h"
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#include "script.h"
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#include "sequences.h"
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#include "simpos.h"
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#include "smob.h"
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#include "socket.h"
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#include "srcprop.h"
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#include "stackchk.h"
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#include "stacks.h"
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#include "stime.h"
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#include "strings.h"
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#include "strop.h"
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#include "strorder.h"
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#include "strports.h"
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#include "struct.h"
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#include "symbols.h"
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#include "tag.h"
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#include "throw.h"
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#include "unif.h"
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#include "variable.h"
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#include "vectors.h"
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#include "version.h"
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#include "vports.h"
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#include "weaks.h"
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#include "init.h"
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#ifdef HAVE_STRING_H
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#include <string.h>
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#endif
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#ifdef HAVE_UNISTD_H
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#include <unistd.h>
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#endif
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static void scm_start_stack SCM_P ((void *base));
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static void scm_restart_stack SCM_P ((void * base));
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static void
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scm_start_stack (base)
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void * base;
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{
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SCM root;
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root = scm_permanent_object (scm_make_root (SCM_UNDEFINED));
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scm_set_root (SCM_ROOT_STATE (root));
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scm_stack_base = base;
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scm_exitval = SCM_BOOL_F; /* vestigial */
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scm_top_level_lookup_closure_var = SCM_BOOL_F;
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scm_system_transformer = SCM_BOOL_F;
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scm_the_last_stack_var = SCM_BOOL_F;
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/* Create an object to hold the root continuation.
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*/
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SCM_NEWCELL (scm_rootcont);
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SCM_SETJMPBUF (scm_rootcont, scm_must_malloc ((long) sizeof (scm_contregs),
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"continuation"));
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SCM_SETCAR (scm_rootcont, scm_tc7_contin);
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SCM_SEQ (scm_rootcont) = 0;
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/* The root continuation if further initialized by scm_restart_stack. */
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/* Create the look-aside stack for variables that are shared between
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* captured continuations.
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*/
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scm_continuation_stack = scm_make_vector (SCM_MAKINUM (512),
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SCM_UNDEFINED, SCM_UNDEFINED);
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/* The continuation stack is further initialized by scm_restart_stack. */
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/* The remainder of stack initialization is factored out to another
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* function so that if this stack is ever exitted, it can be
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* re-entered using scm_restart_stack. */
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scm_restart_stack (base);
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}
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static void
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scm_restart_stack (base)
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void * base;
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{
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scm_dynwinds = SCM_EOL;
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SCM_DYNENV (scm_rootcont) = SCM_EOL;
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SCM_THROW_VALUE (scm_rootcont) = SCM_EOL;
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#ifdef DEBUG_EXTENSIONS
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SCM_DFRAME (scm_rootcont) = scm_last_debug_frame = 0;
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#endif
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SCM_BASE (scm_rootcont) = base;
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scm_continuation_stack_ptr = SCM_MAKINUM (0);
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}
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#if 0
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static char remsg[] = "remove\n#define ", addmsg[] = "add\n#define ";
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static void fixconfig SCM_P ((char *s1, char *s2, int s));
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static void
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fixconfig (s1, s2, s)
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char *s1;
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char *s2;
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int s;
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{
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fputs (s1, stderr);
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fputs (s2, stderr);
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fputs ("\nin ", stderr);
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fputs (s ? "setjump" : "scmfig", stderr);
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fputs (".h and recompile scm\n", stderr);
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exit (1);
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}
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static void check_config SCM_P ((void));
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static void
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check_config ()
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{
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scm_sizet j;
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j = HEAP_SEG_SIZE;
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if (HEAP_SEG_SIZE != j)
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fixconfig ("reduce", "size of HEAP_SEG_SIZE", 0);
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#ifdef SCM_SINGLES
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if (sizeof (float) != sizeof (long))
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fixconfig (remsg, "SCM_SINGLES", 0);
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#endif /* def SCM_SINGLES */
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#ifdef SCM_BIGDIG
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if (2 * SCM_BITSPERDIG / SCM_CHAR_BIT > sizeof (long))
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fixconfig (remsg, "SCM_BIGDIG", 0);
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#ifndef SCM_DIGSTOOBIG
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if (SCM_DIGSPERLONG * sizeof (SCM_BIGDIG) > sizeof (long))
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fixconfig (addmsg, "SCM_DIGSTOOBIG", 0);
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#endif
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#endif
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#ifdef SCM_STACK_GROWS_UP
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if (((SCM_STACKITEM *) & j - stack_start_ptr) < 0)
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fixconfig (remsg, "SCM_STACK_GROWS_UP", 1);
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#else
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if ((stack_start_ptr - (SCM_STACKITEM *) & j) < 0)
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fixconfig (addmsg, "SCM_STACK_GROWS_UP", 1);
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#endif
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}
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#endif
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/* initializing standard and current I/O ports */
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/* Create standard ports from stdio stdin, stdout, and stderr. */
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static void
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scm_init_standard_ports ()
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{
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/* From the SCSH manual:
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It can be useful to turn I/O buffering off in some cases, for
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example when an I/O stream is to be shared by multiple
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subprocesses. For this reason, scsh allocates an unbuffered port
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for file descriptor 0 at start-up time.
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Because shells frequently share stdin with subprocesses, if the
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shell does buffered reads, it might ``steal'' input intended for
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a subprocess. For this reason, all shells, including sh, csh,
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and scsh, read stdin unbuffered. Applications that can tolerate
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buffered input on stdin can reset \ex{(current-input-port)} to
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block buffering for higher performance. */
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scm_def_inp = scm_stdio_to_port (stdin,
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(isatty (fileno (stdin)) ? "r0" : "r"),
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"standard input");
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scm_def_outp = scm_stdio_to_port (stdout, "w", "standard output");
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scm_def_errp = scm_stdio_to_port (stderr, "w", "standard error");
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scm_cur_inp = scm_def_inp;
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scm_cur_outp = scm_def_outp;
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scm_cur_errp = scm_def_errp;
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}
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#ifdef _UNICOS
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typedef int setjmp_type;
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#else
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typedef long setjmp_type;
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#endif
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/* All the data needed to invoke the main function. */
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struct main_func_closure
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{
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/* the function to call */
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void (*main_func) SCM_P ((void *closure, int argc, char **argv));
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void *closure; /* dummy data to pass it */
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int argc;
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char **argv; /* the argument list it should receive */
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};
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static void scm_boot_guile_1 SCM_P ((SCM_STACKITEM *base,
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struct main_func_closure *closure));
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static SCM invoke_main_func SCM_P ((void *body_data, SCM jmpbuf));
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/* Fire up the Guile Scheme interpreter.
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Call MAIN_FUNC, passing it CLOSURE, ARGC, and ARGV. MAIN_FUNC
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should do all the work of the program (initializing other packages,
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reading user input, etc.) before returning. When MAIN_FUNC
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returns, call exit (0); this function never returns. If you want
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some other exit value, MAIN_FUNC may call exit itself.
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scm_boot_guile arranges for program-arguments to return the strings
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given by ARGC and ARGV. If MAIN_FUNC modifies ARGC/ARGV, should
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call scm_set_program_arguments with the final list, so Scheme code
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will know which arguments have been processed.
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scm_boot_guile establishes a catch-all catch handler which prints
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an error message and exits the process. This means that Guile
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exits in a coherent way when system errors occur and the user isn't
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prepared to handle it. If the user doesn't like this behavior,
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they can establish their own universal catcher to shadow this one.
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Why must the caller do all the real work from MAIN_FUNC? The
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garbage collector assumes that all local variables of type SCM will
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be above scm_boot_guile's stack frame on the stack. If you try to
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manipulate SCM values after this function returns, it's the luck of
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the draw whether the GC will be able to find the objects you
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allocate. So, scm_boot_guile function exits, rather than
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returning, to discourage people from making that mistake. */
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void
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scm_boot_guile (argc, argv, main_func, closure)
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int argc;
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char ** argv;
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void (*main_func) ();
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void *closure;
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{
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/* The garbage collector uses the address of this variable as one
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end of the stack, and the address of one of its own local
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variables as the other end. */
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SCM_STACKITEM dummy;
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struct main_func_closure c;
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c.main_func = main_func;
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c.closure = closure;
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c.argc = argc;
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c.argv = argv;
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scm_boot_guile_1 (&dummy, &c);
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}
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/* Record here whether SCM_BOOT_GUILE_1 has already been called. This
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variable is now here and not inside SCM_BOOT_GUILE_1 so that one
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can tweak it. This is necessary for unexec to work. (Hey, "1-live"
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is the name of a local radiostation...) */
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int scm_boot_guile_1_live = 0;
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static void
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scm_boot_guile_1 (base, closure)
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SCM_STACKITEM *base;
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struct main_func_closure *closure;
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{
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static int initialized = 0;
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/* static int live = 0; */
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setjmp_type setjmp_val;
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/* This function is not re-entrant. */
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if (scm_boot_guile_1_live)
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abort ();
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scm_boot_guile_1_live = 1;
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scm_ints_disabled = 1;
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scm_block_gc = 1;
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if (initialized)
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{
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scm_restart_stack (base);
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}
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else
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{
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scm_ports_prehistory ();
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scm_smob_prehistory ();
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scm_tables_prehistory ();
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scm_init_storage (0);
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scm_init_root ();
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#ifdef USE_THREADS
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scm_init_threads (base);
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#endif
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scm_start_stack (base);
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scm_init_gsubr ();
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scm_init_feature ();
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scm_init_alist ();
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scm_init_append ();
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scm_init_arbiters ();
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scm_init_async ();
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scm_init_backtrace ();
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scm_init_boolean ();
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scm_init_chars ();
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scm_init_continuations ();
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scm_init_dynwind ();
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scm_init_eq ();
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scm_init_error ();
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scm_init_fports ();
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scm_init_filesys ();
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scm_init_gc ();
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scm_init_gdbint ();
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scm_init_hash ();
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scm_init_hashtab ();
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scm_init_ioext ();
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scm_init_kw ();
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scm_init_list ();
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scm_init_mallocs ();
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scm_init_net_db ();
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scm_init_numbers ();
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scm_init_objprop ();
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#if DEBUG_EXTENSIONS
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/* Excluding this until it's really needed makes the binary
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* smaller after linking. */
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scm_init_options ();
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#endif
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scm_init_pairs ();
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scm_init_ports ();
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scm_init_posix ();
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scm_init_procs ();
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scm_init_procprop ();
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scm_init_scmsigs ();
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scm_init_socket ();
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#ifdef DEBUG_EXTENSIONS
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scm_init_srcprop ();
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#endif
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scm_init_stackchk ();
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scm_init_struct (); /* Requires struct */
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scm_init_stacks ();
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scm_init_strports ();
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scm_init_symbols ();
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scm_init_tag ();
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scm_init_load ();
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scm_init_print (); /* Requires struct */
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scm_init_read ();
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scm_init_sequences ();
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scm_init_stime ();
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scm_init_strings ();
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scm_init_strorder ();
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scm_init_mbstrings ();
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scm_init_strop ();
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scm_init_throw ();
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scm_init_variable ();
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scm_init_vectors ();
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scm_init_version ();
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scm_init_weaks ();
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scm_init_vports ();
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scm_init_eval ();
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#ifdef DEBUG_EXTENSIONS
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scm_init_debug (); /* Requires macro smobs */
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#endif
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scm_init_ramap ();
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scm_init_unif ();
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scm_init_simpos ();
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scm_init_load_path ();
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scm_init_standard_ports ();
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scm_init_dynamic_linking ();
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scm_init_script ();
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initialized = 1;
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}
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scm_block_gc = 0; /* permit the gc to run */
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/* ints still disabled */
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#ifdef STACK_CHECKING
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scm_stack_checking_enabled_p = SCM_STACK_CHECKING_P;
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#endif
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setjmp_val = setjmp (SCM_JMPBUF (scm_rootcont));
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if (!setjmp_val)
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{
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scm_init_signals ();
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scm_set_program_arguments (closure->argc, closure->argv, 0);
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scm_internal_catch (SCM_BOOL_T, invoke_main_func, closure,
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scm_handle_by_message, 0);
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}
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scm_restore_signals ();
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/* This tick gives any pending
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* asyncs a chance to run. This must be done after
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* the call to scm_restore_signals.
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*/
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SCM_ASYNC_TICK;
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/* If the caller doesn't want this, they should return from
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main_func themselves. */
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exit (0);
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}
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static SCM
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invoke_main_func (body_data, jmpbuf)
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void *body_data;
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SCM jmpbuf;
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{
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struct main_func_closure *closure = (struct main_func_closure *) body_data;
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(*closure->main_func) (closure->closure, closure->argc, closure->argv);
|
||
|
||
/* never reached */
|
||
return SCM_UNDEFINED;
|
||
}
|