Daily bump.
[official-gcc.git] / gcc / params.c
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1 /* params.c - Run-time parameters.
2 Copyright (C) 2001, 2003, 2004, 2005, 2007 Free Software Foundation, Inc.
3 Written by Mark Mitchell <mark@codesourcery.com>.
5 This file is part of GCC.
7 GCC is free software; you can redistribute it and/or modify it under
8 the terms of the GNU General Public License as published by the Free
9 Software Foundation; either version 3, or (at your option) any later
10 version.
12 GCC is distributed in the hope that it will be useful, but WITHOUT ANY
13 WARRANTY; without even the implied warranty of MERCHANTABILITY or
14 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
15 for more details.
17 You should have received a copy of the GNU General Public License
18 along with GCC; see the file COPYING3. If not see
19 <http://www.gnu.org/licenses/>. */
21 #include "config.h"
22 #include "system.h"
23 #include "coretypes.h"
24 #include "tm.h"
25 #include "params.h"
26 #include "toplev.h"
28 /* An array containing the compiler parameters and their current
29 values. */
31 param_info *compiler_params;
33 /* The number of entries in the table. */
35 static size_t num_compiler_params;
37 /* Add the N PARAMS to the current list of compiler parameters. */
39 void
40 add_params (const param_info params[], size_t n)
42 /* Allocate enough space for the new parameters. */
43 compiler_params = xrealloc (compiler_params,
44 (num_compiler_params + n) * sizeof (param_info));
45 /* Copy them into the table. */
46 memcpy (compiler_params + num_compiler_params,
47 params,
48 n * sizeof (param_info));
49 /* Keep track of how many parameters we have. */
50 num_compiler_params += n;
53 /* Set the VALUE associated with the parameter given by NAME. */
55 void
56 set_param_value (const char *name, int value)
58 size_t i;
60 /* Make sure nobody tries to set a parameter to an invalid value. */
61 gcc_assert (value != INVALID_PARAM_VAL);
63 /* Scan the parameter table to find a matching entry. */
64 for (i = 0; i < num_compiler_params; ++i)
65 if (strcmp (compiler_params[i].option, name) == 0)
67 if (value < compiler_params[i].min_value)
68 error ("minimum value of parameter %qs is %u",
69 compiler_params[i].option,
70 compiler_params[i].min_value);
71 else if (compiler_params[i].max_value > compiler_params[i].min_value
72 && value > compiler_params[i].max_value)
73 error ("maximum value of parameter %qs is %u",
74 compiler_params[i].option,
75 compiler_params[i].max_value);
76 else
78 compiler_params[i].value = value;
79 compiler_params[i].set = true;
81 return;
84 /* If we didn't find this parameter, issue an error message. */
85 error ("invalid parameter %qs", name);