-/* Copyright (C) 2002,2003,2005 Free Software Foundation, Inc.
+/* Copyright (C) 2002, 2003, 2005, 2007 Free Software Foundation, Inc.
Contributed by Andy Vaught
This file is part of the GNU Fortran 95 runtime library (libgfortran).
the Free Software Foundation, 51 Franklin Street, Fifth Floor,
Boston, MA 02110-1301, USA. */
-#include "config.h"
-#include <stdio.h>
+#include "libgfortran.h"
+
#include <string.h>
#include <stdlib.h>
#include <ctype.h>
-#include "libgfortran.h"
/* Environment scanner. Examine the environment for controlling minor
* aspects of the program's execution. Our philosophy here that the
}
-/* init_mem()-- Initialize environment variables that have to do with
- * how memory from an ALLOCATE statement is filled. A single flag
- * enables filling and a second variable gives the value that is used
- * to initialize the memory. */
-
-static void
-init_mem (variable * v)
-{
- int offset, n;
- char *p;
-
- p = getenv (v->name);
-
- options.allocate_init_flag = 0; /* The default */
-
- if (p == NULL)
- return;
-
- if (strcasecmp (p, "NONE") == 0)
- return;
-
- /* IEEE-754 Quiet Not-a-Number that will work for single and double
- * precision. Look for the 'f95' mantissa in debug dumps. */
-
- if (strcasecmp (p, "NaN") == 0)
- {
- options.allocate_init_flag = 1;
- options.allocate_init_value = 0xfff80f95;
- return;
- }
-
- /* Interpret the string as a hexadecimal constant */
-
- n = 0;
- while (*p)
- {
- if (!isxdigit (*p))
- {
- v->bad = 1;
- return;
- }
-
- offset = '0';
- if (islower (*p))
- offset = 'a';
- if (isupper (*p))
- offset = 'A';
-
- n = (n << 4) | (*p++ - offset);
- }
-
- options.allocate_init_flag = 1;
- options.allocate_init_value = n;
-}
-
-
-static void
-show_mem (variable * v)
-{
- char *p;
-
- p = getenv (v->name);
-
- st_printf ("%s ", var_source (v));
-
- if (options.allocate_init_flag)
- st_printf ("0x%x", options.allocate_init_value);
-
- st_printf ("\n");
-}
-
-
static void
init_sep (variable * v)
{
}
-/* Structure for associating names and values. */
-
-typedef struct
-{
- const char *name;
- int value;
-}
-choice;
-
-
-enum
-{ FP_ROUND_NEAREST, FP_ROUND_UP, FP_ROUND_DOWN, FP_ROUND_ZERO };
-
-static const choice rounding[] = {
- {"NEAREST", FP_ROUND_NEAREST},
- {"UP", FP_ROUND_UP},
- {"DOWN", FP_ROUND_DOWN},
- {"ZERO", FP_ROUND_ZERO},
- {NULL, 0}
-};
-
-static const choice precision[] =
-{
- { "24", 1},
- { "53", 2},
- { "64", 0},
- { NULL, 0}
-};
-
-static const choice signal_choices[] =
-{
- { "IGNORE", 1},
- { "ABORT", 0},
- { NULL, 0}
-};
-
-
-static void
-init_choice (variable * v, const choice * c)
-{
- char *p;
-
- p = getenv (v->name);
- if (p == NULL)
- goto set_default;
-
- for (; c->name; c++)
- if (strcasecmp (c->name, p) == 0)
- break;
-
- if (c->name == NULL)
- {
- v->bad = 1;
- goto set_default;
- }
-
- *v->var = c->value;
- return;
-
- set_default:
- *v->var = v->value;
-}
-
-
-static void
-show_choice (variable * v, const choice * c)
-{
- st_printf ("%s ", var_source (v));
-
- for (; c->name; c++)
- if (c->value == *v->var)
- break;
-
- if (c->name)
- st_printf ("%s\n", c->name);
- else
- st_printf ("(Unknown)\n");
-}
-
-
-static void
-init_round (variable * v)
-{
- init_choice (v, rounding);
-}
-
-static void
-show_round (variable * v)
-{
- show_choice (v, rounding);
-}
-
-static void
-init_precision (variable * v)
-{
- init_choice (v, precision);
-}
-
-static void
-show_precision (variable * v)
-{
- show_choice (v, precision);
-}
-
-static void
-init_signal (variable * v)
-{
- init_choice (v, signal_choices);
-}
-
-static void
-show_signal (variable * v)
-{
- show_choice (v, signal_choices);
-}
-
-
static variable variable_table[] = {
- {"GFORTRAN_STDIN_UNIT", 5, &options.stdin_unit, init_integer, show_integer,
+ {"GFORTRAN_STDIN_UNIT", GFC_STDIN_UNIT_NUMBER, &options.stdin_unit,
+ init_integer, show_integer,
"Unit number that will be preconnected to standard input\n"
"(No preconnection if negative)", 0},
- {"GFORTRAN_STDOUT_UNIT", 6, &options.stdout_unit, init_integer,
- show_integer,
+ {"GFORTRAN_STDOUT_UNIT", GFC_STDOUT_UNIT_NUMBER, &options.stdout_unit,
+ init_integer, show_integer,
"Unit number that will be preconnected to standard output\n"
"(No preconnection if negative)", 0},
- {"GFORTRAN_STDERR_UNIT", 0, &options.stderr_unit, init_integer,
- show_integer,
+ {"GFORTRAN_STDERR_UNIT", GFC_STDERR_UNIT_NUMBER, &options.stderr_unit,
+ init_integer, show_integer,
"Unit number that will be preconnected to standard error\n"
"(No preconnection if negative)", 0},
"If TRUE, all output is unbuffered. This will slow down large writes "
"but can be\nuseful for forcing data to be displayed immediately.", 0},
+ {"GFORTRAN_UNBUFFERED_PRECONNECTED", 0, &options.unbuffered_preconnected,
+ init_boolean, show_boolean,
+ "If TRUE, output to preconnected units is unbuffered.", 0},
+
{"GFORTRAN_SHOW_LOCUS", 1, &options.locus, init_boolean, show_boolean,
"If TRUE, print filename and line number where runtime errors happen.", 0},
"Separator to use when writing list output. May contain any number of "
"spaces\nand at most one comma. Default is a single space.", 0},
- /* Memory related controls */
-
- {"GFORTRAN_MEM_INIT", 0, NULL, init_mem, show_mem,
- "How to initialize allocated memory. Default value is NONE for no "
- "initialization\n(faster), NAN for a Not-a-Number with the mantissa "
- "0x40f95 or a custom\nhexadecimal value", 0},
-
- {"GFORTRAN_MEM_CHECK", 0, &options.mem_check, init_boolean, show_boolean,
- "Whether memory still allocated will be reported when the program ends.",
- 0},
-
- /* Signal handling (Unix). */
-
- {"GFORTRAN_SIGHUP", 0, &options.sighup, init_signal, show_signal,
- "Whether the program will IGNORE or ABORT on SIGHUP.", 0},
-
- {"GFORTRAN_SIGINT", 0, &options.sigint, init_signal, show_signal,
- "Whether the program will IGNORE or ABORT on SIGINT.", 0},
-
- /* Floating point control */
-
- {"GFORTRAN_FPU_ROUND", 0, &options.fpu_round, init_round, show_round,
- "Set floating point rounding. Values are NEAREST, UP, DOWN, ZERO.", 0},
-
- {"GFORTRAN_FPU_PRECISION", 0, &options.fpu_precision, init_precision,
- show_precision,
- "Precision of intermediate results. Values are 24, 53 and 64.", 0},
-
/* GFORTRAN_CONVERT_UNIT - Set the default data conversion for
unformatted I/O. */
{"GFORTRAN_CONVERT_UNIT", 0, 0, init_unformatted, show_string,
"Set format for unformatted files", 0},
+ /* Behaviour when encoutering a runtime error. */
+ {"GFORTRAN_ERROR_DUMPCORE", -1, &options.dump_core,
+ init_boolean, show_boolean,
+ "Dump a core file (if possible) on runtime error", -1},
+
+ {"GFORTRAN_ERROR_BACKTRACE", -1, &options.backtrace,
+ init_boolean, show_boolean,
+ "Print out a backtrace (if possible) on runtime error", -1},
+
{NULL, 0, NULL, NULL, NULL, NULL, 0}
};
}
-/* check_buffered()-- Given an unit number n, determine if an override
- * for the stream exists. Returns zero for unbuffered, one for
- * buffered or two for not set. */
-
-int
-check_buffered (int n)
-{
- char name[22 + sizeof (n) * 3];
- variable v;
- int rv;
-
- if (options.all_unbuffered)
- return 0;
-
- sprintf (name, "GFORTRAN_UNBUFFERED_%d", n);
-
- v.name = name;
- v.value = 2;
- v.var = &rv;
-
- init_boolean (&v);
-
- return rv;
-}
-
-
void
show_variables (void)
{
st_printf ("\nRuntime error codes:");
st_printf ("\n--------------------\n");
- for (n = ERROR_FIRST + 1; n < ERROR_LAST; n++)
+ for (n = LIBERROR_FIRST + 1; n < LIBERROR_LAST; n++)
if (n < 0 || n > 9)
st_printf ("%d %s\n", n, translate_error (n));
else
static int
do_parse (void)
{
- int tok, def;
+ int tok;
int unit1;
int continue_ulist;
char *start;
unit_count = 0;
- def = 0;
start = p;
/* Parse the string. First, let's look for a default. */
switch (tok)
{
case NATIVE:
- endian = CONVERT_NATIVE;
+ endian = GFC_CONVERT_NATIVE;
break;
case SWAP:
- endian = CONVERT_SWAP;
+ endian = GFC_CONVERT_SWAP;
break;
case BIG:
- endian = CONVERT_BIG;
+ endian = GFC_CONVERT_BIG;
break;
case LITTLE:
- endian = CONVERT_LITTLE;
+ endian = GFC_CONVERT_LITTLE;
break;
case INTEGER:
break;
case END:
+ def = endian;
goto end;
break;
tok = next_token ();
switch (tok)
{
+ case NATIVE:
+ if (next_token () != ':')
+ goto error;
+ endian = GFC_CONVERT_NATIVE;
+ break;
+
+ case SWAP:
+ if (next_token () != ':')
+ goto error;
+ endian = GFC_CONVERT_SWAP;
+ break;
+
case LITTLE:
if (next_token () != ':')
goto error;
- endian = CONVERT_LITTLE;
+ endian = GFC_CONVERT_LITTLE;
break;
case BIG:
if (next_token () != ':')
goto error;
- endian = CONVERT_BIG;
+ endian = GFC_CONVERT_BIG;
break;
case INTEGER:
end:
return 0;
error:
- def = CONVERT_NONE;
+ def = GFC_CONVERT_NONE;
return -1;
}
{
char *val;
val = getenv (v->name);
- def = CONVERT_NONE;
+ def = GFC_CONVERT_NONE;
n_elist = 0;
if (val == NULL)
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