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9a33a2e8 | 1 | /* params.c - Run-time parameters. |
cfaf579d | 2 | Copyright (C) 2001, 2003, 2004, 2005, 2007, 2008 |
3 | Free Software Foundation, Inc. | |
9a33a2e8 | 4 | Written by Mark Mitchell <mark@codesourcery.com>. |
5 | ||
f12b58b3 | 6 | This file is part of GCC. |
9a33a2e8 | 7 | |
f12b58b3 | 8 | GCC is free software; you can redistribute it and/or modify it under |
9 | the terms of the GNU General Public License as published by the Free | |
8c4c00c1 | 10 | Software Foundation; either version 3, or (at your option) any later |
f12b58b3 | 11 | version. |
9a33a2e8 | 12 | |
f12b58b3 | 13 | GCC is distributed in the hope that it will be useful, but WITHOUT ANY |
14 | WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
15 | FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License | |
16 | for more details. | |
9a33a2e8 | 17 | |
18 | You should have received a copy of the GNU General Public License | |
8c4c00c1 | 19 | along with GCC; see the file COPYING3. If not see |
20 | <http://www.gnu.org/licenses/>. */ | |
9a33a2e8 | 21 | |
22 | #include "config.h" | |
23 | #include "system.h" | |
805e22b2 | 24 | #include "coretypes.h" |
25 | #include "tm.h" | |
9a33a2e8 | 26 | #include "params.h" |
27 | #include "toplev.h" | |
28 | ||
29 | /* An array containing the compiler parameters and their current | |
30 | values. */ | |
31 | ||
32 | param_info *compiler_params; | |
33 | ||
34 | /* The number of entries in the table. */ | |
9a33a2e8 | 35 | static size_t num_compiler_params; |
36 | ||
37 | /* Add the N PARAMS to the current list of compiler parameters. */ | |
38 | ||
195731ad | 39 | void |
1a97be37 | 40 | add_params (const param_info params[], size_t n) |
9a33a2e8 | 41 | { |
42 | /* Allocate enough space for the new parameters. */ | |
4077bf7a | 43 | compiler_params = XRESIZEVEC (param_info, compiler_params, |
44 | num_compiler_params + n); | |
9a33a2e8 | 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; | |
51 | } | |
52 | ||
53 | /* Set the VALUE associated with the parameter given by NAME. */ | |
54 | ||
55 | void | |
1a97be37 | 56 | set_param_value (const char *name, int value) |
9a33a2e8 | 57 | { |
58 | size_t i; | |
59 | ||
60 | /* Make sure nobody tries to set a parameter to an invalid value. */ | |
876760f6 | 61 | gcc_assert (value != INVALID_PARAM_VAL); |
9a33a2e8 | 62 | |
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) | |
66 | { | |
1d8a53f4 | 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 | |
07804af5 | 77 | { |
78 | compiler_params[i].value = value; | |
79 | compiler_params[i].set = true; | |
80 | } | |
9a33a2e8 | 81 | return; |
82 | } | |
83 | ||
84 | /* If we didn't find this parameter, issue an error message. */ | |
eb586f2c | 85 | error ("invalid parameter %qs", name); |
9a33a2e8 | 86 | } |
c9036234 | 87 | |
88 | /* Return the current value of num_compiler_params, for the benefit of | |
89 | plugins that use parameters as features. */ | |
90 | ||
91 | size_t | |
92 | get_num_compiler_params (void) | |
93 | { | |
94 | return num_compiler_params; | |
95 | } |