aboutsummaryrefslogtreecommitdiffstats
path: root/scmmain.c
blob: 85e2e099b07dccd7b37ff55f8a5574ca9f507301 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
/* "scmmain.c" main() for SCM.
 * Copyright (C) 1990-1999 Free Software Foundation, Inc.
 *
 * This program is free software: you can redistribute it and/or modify
 * it under the terms of the GNU Lesser General Public License as
 * published by the Free Software Foundation, either version 3 of the
 * License, or (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful, but
 * WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 * Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public
 * License along with this program.  If not, see
 * <http://www.gnu.org/licenses/>.
 */

/* Author: Aubrey Jaffer */

/* added by Dai Inukai 2001-03-21*/
#ifdef __FreeBSD__
# include <floatingpoint.h>
#endif

#ifdef _WIN32
# include <io.h>
#endif

#include "scm.h"
#include "patchlvl.h"

#ifdef __IBMC__
# include <io.h>
#endif
#ifdef __NetBSD__
# include <unistd.h>
#endif
#ifdef __OpenBSD__
# include <unistd.h>
#endif
#ifndef GENERIC_NAME
# define GENERIC_NAME "scm"
#endif
#ifndef INIT_GETENV
# define INIT_GETENV "SCM_INIT_PATH"
#endif

char *scm_find_implpath(execpath)
     const char *execpath;
{
  char *implpath = 0;
#ifndef nosve
# ifndef POCKETCONSOLE
  char *getenvpath = getenv(INIT_GETENV);
  /* fprintf(stderr, "%s=%s\n", INIT_GETENV, getenvpath); fflush(stderr); */
  if (getenvpath) implpath = scm_cat_path(0L, getenvpath, 0L);
  if (implpath) {/* The value of the environment variable supersedes
		    other locations, only if the file exists. */
    implpath = scm_try_path(implpath);
    if (!implpath) {
      fputs("Value of "INIT_GETENV" (=\"", stderr);
      fputs(getenvpath, stderr);
      fputs("\") not found; Trying elsewhere\n", stderr);
    }
  }
# endif
#endif
  if (!implpath && execpath)
    implpath = find_impl_file(execpath, GENERIC_NAME, INIT_FILE_NAME, dirsep);
#ifdef IMPLINIT
  if (!implpath) implpath = scm_cat_path(0L, IMPLINIT, 0L);
#endif
  return implpath;
}
const char * const generic_name[] = { GENERIC_NAME };

#ifdef WINSIGNALS
SCM_EXPORT HANDLE scm_hMainThread;
#endif

void scmmain_init_user_scm();

int main(argc, argv)
     int argc;
     const char **argv;
{
  char *script_arg = 0;		/* location of SCSH style script file or 0. */
  char *implpath = 0, **nargv;
  int nargc, iverbose = 0, buf0stdin;
  SCM retval;
/* added by Dai Inukai 2001-03-21 */
#ifdef __FreeBSD__
  fp_prec_t fpspec;
#endif

#ifdef WINSIGNALS
  /* need a handle to access the main thread from the signal handler thread */
  DuplicateHandle(GetCurrentProcess(), GetCurrentThread(), GetCurrentProcess(),
                  &scm_hMainThread, 0, TRUE, DUPLICATE_SAME_ACCESS);
#endif

/*    {char ** argvv = argv; */
/*    for (;*argvv;argvv++) {fputs(*argvv, stderr); fputs(" ", stderr);} */
/*    fputs("\n", stderr);} */

  init_user_scm = scmmain_init_user_scm;

  if (0==argc) {argc = 1; argv = generic_name;} /* for macintosh */
#ifndef LACK_SBRK
  init_sbrk();			/* Do this before malloc()s. */
#endif
/* added by Dai Inukai 2001-03-21 */
#ifdef __FreeBSD__
   fpspec = fpsetprec(FP_PE); /* IEEE 64 bit FP mantissa*/
#endif
  execpath = 0;			/* even when dumped */
  if ((nargv = script_process_argv(argc, argv))) { /* SCSH style scripts */
    script_arg = argv[2];	/* Save for scm_find_execpath() call */
    nargc = script_count_argv(nargv);
  }
  else {nargv = argv; nargc = argc;}
  /* execpath must be set to executable's path in order to use DUMP or DLD. */
  execpath = scm_find_execpath(nargc, nargv, script_arg);
  implpath = scm_find_implpath(execpath);
  if (isatty(fileno(stdin)) && isatty(fileno(stdout)))
    iverbose = (nargc <= 1) ? 2 : 1;
  buf0stdin = init_buf0(stdin);
  do {				/* You must call scm_init_from_argv()
				   or init_scm() to initialize SCM */
    scm_init_from_argv(nargc, nargv, script_arg, iverbose, buf0stdin);
    init_signals();		/* signals are optional */
				/* Now we are ready to run Scheme code! */
    retval = scm_top_level(implpath, 0L);
    restore_signals();		/* signals are optional */
				/* final_scm() when you are done with SCM. */
    if (retval) break;
    dumped = 0;
    if (2 <= iverbose) fputs(";RESTART\n", stderr);
    final_scm(!0);
  } while (!0);
  final_scm(
#ifdef CAREFUL_INTS
	    1
#else
	    1 /* freeall || (2 <= verbose) */ /* Free storage when we're done. */
#endif
	    );
  if (2 <= iverbose) fputs(";EXIT\n", stderr);
  fflush(stderr);
  if (implpath) free(implpath);
  if (execpath) free(execpath);
  execpath = 0;
/* added by Dai Inukai 2001-03-27 */
#ifdef __FreeBSD__
  fpspec = fpsetprec(fpspec); /* Set back to FP_PD which is 53 bit FP. */
                              /* This may not be needed because the    */
                              /* kernel is set to FP_PD by default.    */
#endif
  return (int)INUM(retval);
}

/* init_user_scm() is called by the scheme procedure
   SCM_INIT_EXTENSIONS in "Init5xx.scm" */
void scmmain_init_user_scm()
{
  /* Put calls to your C initialization routines here. */
}