/* params.c - Run-time parameters.
- Copyright (C) 2001 Free Software Foundation, Inc.
+ Copyright (C) 2001, 2003, 2004, 2005, 2007, 2008, 2009, 2010, 2011
+ Free Software Foundation, Inc.
Written by Mark Mitchell <mark@codesourcery.com>.
-This file is part of GNU CC.
+This file is part of GCC.
-GNU CC is free software; you can redistribute it and/or modify
-it under the terms of the GNU General Public License as published by
-the Free Software Foundation; either version 2, or (at your option)
-any later version.
+GCC is free software; you can redistribute it and/or modify it under
+the terms of the GNU General Public License as published by the Free
+Software Foundation; either version 3, or (at your option) any later
+version.
-GNU CC 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 General Public License for more details.
+GCC 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 General Public License
+for more details.
You should have received a copy of the GNU General Public License
-along with GNU CC; see the file COPYING. If not, write to
-the Free Software Foundation, 59 Temple Place - Suite 330,
-Boston, MA 02111-1307, USA.
-
-*/
+along with GCC; see the file COPYING3. If not see
+<http://www.gnu.org/licenses/>. */
#include "config.h"
#include "system.h"
+#include "coretypes.h"
+#include "common/common-target.h"
#include "params.h"
-#include "toplev.h"
+#include "diagnostic-core.h"
/* An array containing the compiler parameters and their current
values. */
param_info *compiler_params;
/* The number of entries in the table. */
-
static size_t num_compiler_params;
+/* Whether the parameters have all been initialized and had their
+ default values determined. */
+static bool params_finished;
+
+static const param_info lang_independent_params[] = {
+#define DEFPARAM(ENUM, OPTION, HELP, DEFAULT, MIN, MAX) \
+ { OPTION, DEFAULT, MIN, MAX, HELP },
+#include "params.def"
+#undef DEFPARAM
+ { NULL, 0, 0, 0, NULL }
+};
+
/* Add the N PARAMS to the current list of compiler parameters. */
-void
-add_params (params, n)
- const param_info params[];
- size_t n;
+void
+add_params (const param_info params[], size_t n)
{
+ gcc_assert (!params_finished);
+
/* Allocate enough space for the new parameters. */
- compiler_params =
- ((param_info *)
- xrealloc (compiler_params,
- (num_compiler_params + n) * sizeof (param_info)));
+ compiler_params = XRESIZEVEC (param_info, compiler_params,
+ num_compiler_params + n);
/* Copy them into the table. */
memcpy (compiler_params + num_compiler_params,
params,
num_compiler_params += n;
}
-/* Set the VALUE associated with the parameter given by NAME. */
+/* Add all parameters and default values that can be set in both the
+ driver and the compiler proper. */
+
+void
+global_init_params (void)
+{
+ add_params (lang_independent_params, LAST_PARAM);
+ targetm_common.option_default_params ();
+}
+
+/* Note that all parameters have been added and all default values
+ set. */
+
+void
+finish_params (void)
+{
+ params_finished = true;
+}
+
+/* Set the value of the parameter given by NUM to VALUE in PARAMS and
+ PARAMS_SET. If EXPLICIT_P, this is being set by the user;
+ otherwise it is being set implicitly by the compiler. */
+
+static void
+set_param_value_internal (compiler_param num, int value,
+ int *params, int *params_set,
+ bool explicit_p)
+{
+ size_t i = (size_t) num;
+
+ gcc_assert (params_finished);
+
+ params[i] = value;
+ if (explicit_p)
+ params_set[i] = true;
+}
+
+/* Set the VALUE associated with the parameter given by NAME in PARAMS
+ and PARAMS_SET. */
void
-set_param_value (name, value)
- const char *name;
- int value;
+set_param_value (const char *name, int value,
+ int *params, int *params_set)
{
size_t i;
/* Make sure nobody tries to set a parameter to an invalid value. */
- if (value == INVALID_PARAM_VAL)
- abort ();
+ gcc_assert (value != INVALID_PARAM_VAL);
/* Scan the parameter table to find a matching entry. */
for (i = 0; i < num_compiler_params; ++i)
if (strcmp (compiler_params[i].option, name) == 0)
{
- compiler_params[i].value = value;
+ if (value < compiler_params[i].min_value)
+ error ("minimum value of parameter %qs is %u",
+ compiler_params[i].option,
+ compiler_params[i].min_value);
+ else if (compiler_params[i].max_value > compiler_params[i].min_value
+ && value > compiler_params[i].max_value)
+ error ("maximum value of parameter %qs is %u",
+ compiler_params[i].option,
+ compiler_params[i].max_value);
+ else
+ set_param_value_internal ((compiler_param) i, value,
+ params, params_set, true);
return;
}
/* If we didn't find this parameter, issue an error message. */
- error ("invalid parameter `%s'", name);
+ error ("invalid parameter %qs", name);
+}
+
+/* Set the value of the parameter given by NUM to VALUE in PARAMS and
+ PARAMS_SET, implicitly, if it has not been set explicitly by the
+ user. */
+
+void
+maybe_set_param_value (compiler_param num, int value,
+ int *params, int *params_set)
+{
+ if (!params_set[(int) num])
+ set_param_value_internal (num, value, params, params_set, false);
+}
+
+/* Set the default value of a parameter given by NUM to VALUE, before
+ option processing. */
+
+void
+set_default_param_value (compiler_param num, int value)
+{
+ gcc_assert (!params_finished);
+
+ compiler_params[(int) num].default_value = value;
+}
+
+/* Return the default value of parameter NUM. */
+
+int
+default_param_value (compiler_param num)
+{
+ return compiler_params[(int) num].default_value;
+}
+
+/* Initialize an array PARAMS with default values of the
+ parameters. */
+
+void
+init_param_values (int *params)
+{
+ size_t i;
+
+ gcc_assert (params_finished);
+
+ for (i = 0; i < num_compiler_params; i++)
+ params[i] = compiler_params[i].default_value;
}
-
-
+/* Return the current value of num_compiler_params, for the benefit of
+ plugins that use parameters as features. */
+
+size_t
+get_num_compiler_params (void)
+{
+ return num_compiler_params;
+}
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