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jeremybenn |
/* params.c - Run-time parameters.
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Copyright (C) 2001, 2003, 2004, 2005, 2007, 2008
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Free Software Foundation, Inc.
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Written by Mark Mitchell <mark@codesourcery.com>.
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This file is part of GCC.
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GCC is free software; you can redistribute it and/or modify it under
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the terms of the GNU General Public License as published by the Free
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Software Foundation; either version 3, or (at your option) any later
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version.
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GCC is distributed in the hope that it will be useful, but WITHOUT ANY
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WARRANTY; without even the implied warranty of MERCHANTABILITY or
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FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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for more details.
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You should have received a copy of the GNU General Public License
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along with GCC; see the file COPYING3. If not see
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<http://www.gnu.org/licenses/>. */
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#include "config.h"
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#include "system.h"
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#include "coretypes.h"
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#include "tm.h"
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#include "params.h"
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#include "toplev.h"
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/* An array containing the compiler parameters and their current
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values. */
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param_info *compiler_params;
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/* The number of entries in the table. */
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static size_t num_compiler_params;
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/* Add the N PARAMS to the current list of compiler parameters. */
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void
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add_params (const param_info params[], size_t n)
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{
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/* Allocate enough space for the new parameters. */
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compiler_params = XRESIZEVEC (param_info, compiler_params,
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num_compiler_params + n);
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/* Copy them into the table. */
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memcpy (compiler_params + num_compiler_params,
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params,
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n * sizeof (param_info));
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/* Keep track of how many parameters we have. */
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num_compiler_params += n;
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}
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/* Set the VALUE associated with the parameter given by NAME. */
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void
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set_param_value (const char *name, int value)
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{
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size_t i;
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/* Make sure nobody tries to set a parameter to an invalid value. */
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gcc_assert (value != INVALID_PARAM_VAL);
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/* Scan the parameter table to find a matching entry. */
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for (i = 0; i < num_compiler_params; ++i)
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if (strcmp (compiler_params[i].option, name) == 0)
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{
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if (value < compiler_params[i].min_value)
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error ("minimum value of parameter %qs is %u",
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compiler_params[i].option,
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compiler_params[i].min_value);
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else if (compiler_params[i].max_value > compiler_params[i].min_value
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&& value > compiler_params[i].max_value)
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error ("maximum value of parameter %qs is %u",
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compiler_params[i].option,
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compiler_params[i].max_value);
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else
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{
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compiler_params[i].value = value;
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compiler_params[i].set = true;
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}
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return;
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}
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/* If we didn't find this parameter, issue an error message. */
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error ("invalid parameter %qs", name);
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}
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/* Return the current value of num_compiler_params, for the benefit of
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plugins that use parameters as features. */
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size_t
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get_num_compiler_params (void)
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{
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return num_compiler_params;
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}
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