-/* Copyright (C) 2002-2016 Free Software Foundation, Inc.
+/* Copyright (C) 2002-2024 Free Software Foundation, Inc.
Contributed by Andy Vaught and Paul Brook <paul@nowt.org>
This file is part of the GNU Fortran runtime library (libgfortran).
<http://www.gnu.org/licenses/>. */
#include "libgfortran.h"
-#include <string.h>
+#include <string.h>
#ifdef HAVE_UNISTD_H
#include <unistd.h>
#endif
+
+#if __nvptx__
+/* Map "exit" to "abort"; see PR85463 '[nvptx] "exit" in offloaded region
+ doesn't terminate process'. */
+# undef exit
+# define exit(status) do { (void) (status); abort (); } while (0)
+#endif
+
+
+#if __nvptx__
+/* 'printf' is all we have. */
+# undef estr_vprintf
+# define estr_vprintf vprintf
+#else
+# error TODO
+#endif
+
+
+/* runtime/environ.c */
+
+options_t options;
+
+
+/* runtime/main.c */
+
/* Stupid function to be sure the constructor is always linked in, even
in the case of static linking. See PR libfortran/22298 for details. */
void
return;
}
-options_t options;
-
-/* This will be 0 for little-endian
- machines and 1 for big-endian machines.
-
- Currently minimal libgfortran only runs on little-endian devices
- which don't support constructors so this is just a constant. */
-int big_endian = 0;
static int argc_save;
static char **argv_save;
+
+/* Set the saved values of the command line arguments. */
+
+void
+set_args (int argc, char **argv)
+{
+ argc_save = argc;
+ argv_save = argv;
+}
+iexport(set_args);
+
+
+/* Retrieve the saved values of the command line arguments. */
+
+void
+get_args (int *argc, char ***argv)
+{
+ *argc = argc_save;
+ *argv = argv_save;
+}
+
+
+/* runtime/error.c */
+
+/* Write a null-terminated C string to standard error. This function
+ is async-signal-safe. */
+
+ssize_t
+estr_write (const char *str)
+{
+ return write (STDERR_FILENO, str, strlen (str));
+}
+
+
+/* printf() like function for for printing to stderr. Uses a stack
+ allocated buffer and doesn't lock stderr, so it should be safe to
+ use from within a signal handler. */
+
+int
+st_printf (const char * format, ...)
+{
+ int written;
+ va_list ap;
+ va_start (ap, format);
+ written = estr_vprintf (format, ap);
+ va_end (ap);
+ return written;
+}
+
+
+/* sys_abort()-- Terminate the program showing backtrace and dumping
+ core. */
+
+void
+sys_abort (void)
+{
+ /* If backtracing is enabled, print backtrace and disable signal
+ handler for ABRT. */
+ if (options.backtrace == 1
+ || (options.backtrace == -1 && compile_options.backtrace == 1))
+ {
+ estr_write ("\nProgram aborted.\n");
+ }
+
+ abort();
+}
+
+
+/* Exit in case of error termination. If backtracing is enabled, print
+ backtrace, then exit. */
+
+void
+exit_error (int status)
+{
+ if (options.backtrace == 1
+ || (options.backtrace == -1 && compile_options.backtrace == 1))
+ {
+ estr_write ("\nError termination.\n");
+ }
+ exit (status);
+}
+
+
+/* show_locus()-- Print a line number and filename describing where
+ * something went wrong */
+
+void
+show_locus (st_parameter_common *cmp)
+{
+ char *filename;
+
+ if (!options.locus || cmp == NULL || cmp->filename == NULL)
+ return;
+
+ if (cmp->unit > 0)
+ {
+ filename = /* TODO filename_from_unit (cmp->unit) */ NULL;
+
+ if (filename != NULL)
+ {
+ st_printf ("At line %d of file %s (unit = %d, file = '%s')\n",
+ (int) cmp->line, cmp->filename, (int) cmp->unit, filename);
+ free (filename);
+ }
+ else
+ {
+ st_printf ("At line %d of file %s (unit = %d)\n",
+ (int) cmp->line, cmp->filename, (int) cmp->unit);
+ }
+ return;
+ }
+
+ st_printf ("At line %d of file %s\n", (int) cmp->line, cmp->filename);
+}
+
+
/* recursion_check()-- It's possible for additional errors to occur
* during fatal error processing. We detect this condition here and
* exit with code 4 immediately. */
os_error (const char *message)
{
recursion_check ();
- printf ("Operating system error: ");
- printf ("%s\n", message);
- exit (1);
+ estr_write ("Operating system error: ");
+ estr_write (message);
+ estr_write ("\n");
+ exit_error (1);
}
-iexport(os_error);
+iexport(os_error); /* TODO, DEPRECATED, ABI: Should not be exported
+ anymore when bumping so version. */
+
+
+/* Improved version of os_error with a printf style format string and
+ a locus. */
+
+void
+os_error_at (const char *where, const char *message, ...)
+{
+ va_list ap;
+
+ recursion_check ();
+ estr_write (where);
+ estr_write (": ");
+ va_start (ap, message);
+ estr_vprintf (message, ap);
+ va_end (ap);
+ estr_write ("\n");
+ exit_error (1);
+}
+iexport(os_error_at);
/* void runtime_error()-- These are errors associated with an
va_list ap;
recursion_check ();
- printf ("Fortran runtime error: ");
+ estr_write ("Fortran runtime error: ");
va_start (ap, message);
- vprintf (message, ap);
+ estr_vprintf (message, ap);
va_end (ap);
- printf ("\n");
- exit (2);
+ estr_write ("\n");
+ exit_error (2);
}
iexport(runtime_error);
va_list ap;
recursion_check ();
- printf ("%s", where);
- printf ("\nFortran runtime error: ");
+ estr_write (where);
+ estr_write ("\nFortran runtime error: ");
va_start (ap, message);
- vprintf (message, ap);
+ estr_vprintf (message, ap);
va_end (ap);
- printf ("\n");
- exit (2);
+ estr_write ("\n");
+ exit_error (2);
}
iexport(runtime_error_at);
{
va_list ap;
- printf ("%s", where);
- printf ("\nFortran runtime warning: ");
+ estr_write (where);
+ estr_write ("\nFortran runtime warning: ");
va_start (ap, message);
- vprintf (message, ap);
+ estr_vprintf (message, ap);
va_end (ap);
- printf ("\n");
+ estr_write ("\n");
}
iexport(runtime_warning_at);
internal_error (st_parameter_common *cmp, const char *message)
{
recursion_check ();
- printf ("Internal Error: ");
- printf ("%s", message);
- printf ("\n");
+ show_locus (cmp);
+ estr_write ("Internal Error: ");
+ estr_write (message);
+ estr_write ("\n");
/* This function call is here to get the main.o object file included
when linking statically. This works because error.o is supposed to
because hopefully it doesn't happen too often). */
stupid_function_name_for_static_linking();
- exit (3);
+ exit_error (3);
}
-/* Set the saved values of the command line arguments. */
+/* runtime/stop.c */
+
+#undef report_exception
+#define report_exception() do {} while (0)
+
+
+/* A numeric STOP statement. */
+
+extern _Noreturn void stop_numeric (int, bool);
+export_proto(stop_numeric);
void
-set_args (int argc, char **argv)
+stop_numeric (int code, bool quiet)
{
- argc_save = argc;
- argv_save = argv;
+ if (!quiet)
+ {
+ report_exception ();
+ st_printf ("STOP %d\n", code);
+ }
+ exit (code);
}
-iexport(set_args);
-/* Retrieve the saved values of the command line arguments. */
+/* A character string or blank STOP statement. */
void
-get_args (int *argc, char ***argv)
+stop_string (const char *string, size_t len, bool quiet)
{
- *argc = argc_save;
- *argv = argv_save;
+ if (!quiet)
+ {
+ report_exception ();
+ if (string)
+ {
+ estr_write ("STOP ");
+ (void) write (STDERR_FILENO, string, len);
+ estr_write ("\n");
+ }
+ }
+ exit (0);
}
-/* sys_abort()-- Terminate the program showing backtrace and dumping
- core. */
+
+/* Per Fortran 2008, section 8.4: "Execution of a STOP statement initiates
+ normal termination of execution. Execution of an ERROR STOP statement
+ initiates error termination of execution." Thus, error_stop_string returns
+ a nonzero exit status code. */
+
+extern _Noreturn void error_stop_string (const char *, size_t, bool);
+export_proto(error_stop_string);
void
-sys_abort (void)
+error_stop_string (const char *string, size_t len, bool quiet)
{
- /* If backtracing is enabled, print backtrace and disable signal
- handler for ABRT. */
- if (options.backtrace == 1
- || (options.backtrace == -1 && compile_options.backtrace == 1))
+ if (!quiet)
{
- printf ("\nProgram aborted.\n");
+ report_exception ();
+ estr_write ("ERROR STOP ");
+ (void) write (STDERR_FILENO, string, len);
+ estr_write ("\n");
}
+ exit_error (1);
+}
- abort();
+
+/* A numeric ERROR STOP statement. */
+
+extern _Noreturn void error_stop_numeric (int, bool);
+export_proto(error_stop_numeric);
+
+void
+error_stop_numeric (int code, bool quiet)
+{
+ if (!quiet)
+ {
+ report_exception ();
+ st_printf ("ERROR STOP %d\n", code);
+ }
+ exit_error (code);
}
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