]>
Commit | Line | Data |
---|---|---|
c6d9a88c | 1 | /* params.c - Run-time parameters. |
4c77620d | 2 | Copyright (C) 2001, 2003, 2004, 2005, 2007, 2008, 2009, 2010, 2011 |
66647d44 | 3 | Free Software Foundation, Inc. |
c6d9a88c MM |
4 | Written by Mark Mitchell <mark@codesourcery.com>. |
5 | ||
1322177d | 6 | This file is part of GCC. |
c6d9a88c | 7 | |
1322177d LB |
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 | |
9dcd6f09 | 10 | Software Foundation; either version 3, or (at your option) any later |
1322177d | 11 | version. |
c6d9a88c | 12 | |
1322177d LB |
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. | |
c6d9a88c MM |
17 | |
18 | You should have received a copy of the GNU General Public License | |
9dcd6f09 NC |
19 | along with GCC; see the file COPYING3. If not see |
20 | <http://www.gnu.org/licenses/>. */ | |
c6d9a88c MM |
21 | |
22 | #include "config.h" | |
23 | #include "system.h" | |
4977bab6 | 24 | #include "coretypes.h" |
4c77620d | 25 | #include "common/common-target.h" |
c6d9a88c | 26 | #include "params.h" |
718f9c0f | 27 | #include "diagnostic-core.h" |
c6d9a88c MM |
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. */ | |
c6d9a88c MM |
35 | static size_t num_compiler_params; |
36 | ||
48476d13 JM |
37 | /* Whether the parameters have all been initialized and had their |
38 | default values determined. */ | |
39 | static bool params_finished; | |
40 | ||
4c77620d JM |
41 | static const param_info lang_independent_params[] = { |
42 | #define DEFPARAM(ENUM, OPTION, HELP, DEFAULT, MIN, MAX) \ | |
43 | { OPTION, DEFAULT, MIN, MAX, HELP }, | |
44 | #include "params.def" | |
45 | #undef DEFPARAM | |
46 | { NULL, 0, 0, 0, NULL } | |
47 | }; | |
48 | ||
c6d9a88c MM |
49 | /* Add the N PARAMS to the current list of compiler parameters. */ |
50 | ||
6a4d6760 | 51 | void |
3d7aafde | 52 | add_params (const param_info params[], size_t n) |
c6d9a88c | 53 | { |
48476d13 JM |
54 | gcc_assert (!params_finished); |
55 | ||
c6d9a88c | 56 | /* Allocate enough space for the new parameters. */ |
d3bfe4de KG |
57 | compiler_params = XRESIZEVEC (param_info, compiler_params, |
58 | num_compiler_params + n); | |
c6d9a88c MM |
59 | /* Copy them into the table. */ |
60 | memcpy (compiler_params + num_compiler_params, | |
61 | params, | |
62 | n * sizeof (param_info)); | |
63 | /* Keep track of how many parameters we have. */ | |
64 | num_compiler_params += n; | |
65 | } | |
66 | ||
4c77620d JM |
67 | /* Add all parameters and default values that can be set in both the |
68 | driver and the compiler proper. */ | |
69 | ||
70 | void | |
71 | global_init_params (void) | |
72 | { | |
73 | add_params (lang_independent_params, LAST_PARAM); | |
74 | targetm_common.option_default_params (); | |
75 | } | |
76 | ||
48476d13 JM |
77 | /* Note that all parameters have been added and all default values |
78 | set. */ | |
79 | ||
80 | void | |
81 | finish_params (void) | |
82 | { | |
83 | params_finished = true; | |
84 | } | |
85 | ||
86 | /* Set the value of the parameter given by NUM to VALUE in PARAMS and | |
87 | PARAMS_SET. If EXPLICIT_P, this is being set by the user; | |
88 | otherwise it is being set implicitly by the compiler. */ | |
128dc8e2 JM |
89 | |
90 | static void | |
91 | set_param_value_internal (compiler_param num, int value, | |
48476d13 | 92 | int *params, int *params_set, |
128dc8e2 JM |
93 | bool explicit_p) |
94 | { | |
95 | size_t i = (size_t) num; | |
96 | ||
48476d13 JM |
97 | gcc_assert (params_finished); |
98 | ||
99 | params[i] = value; | |
128dc8e2 | 100 | if (explicit_p) |
48476d13 | 101 | params_set[i] = true; |
128dc8e2 JM |
102 | } |
103 | ||
48476d13 JM |
104 | /* Set the VALUE associated with the parameter given by NAME in PARAMS |
105 | and PARAMS_SET. */ | |
c6d9a88c MM |
106 | |
107 | void | |
48476d13 JM |
108 | set_param_value (const char *name, int value, |
109 | int *params, int *params_set) | |
c6d9a88c MM |
110 | { |
111 | size_t i; | |
112 | ||
113 | /* Make sure nobody tries to set a parameter to an invalid value. */ | |
e16acfcd | 114 | gcc_assert (value != INVALID_PARAM_VAL); |
c6d9a88c MM |
115 | |
116 | /* Scan the parameter table to find a matching entry. */ | |
117 | for (i = 0; i < num_compiler_params; ++i) | |
118 | if (strcmp (compiler_params[i].option, name) == 0) | |
119 | { | |
e06c0feb NS |
120 | if (value < compiler_params[i].min_value) |
121 | error ("minimum value of parameter %qs is %u", | |
122 | compiler_params[i].option, | |
123 | compiler_params[i].min_value); | |
124 | else if (compiler_params[i].max_value > compiler_params[i].min_value | |
125 | && value > compiler_params[i].max_value) | |
126 | error ("maximum value of parameter %qs is %u", | |
127 | compiler_params[i].option, | |
128 | compiler_params[i].max_value); | |
129 | else | |
48476d13 JM |
130 | set_param_value_internal ((compiler_param) i, value, |
131 | params, params_set, true); | |
c6d9a88c MM |
132 | return; |
133 | } | |
134 | ||
135 | /* If we didn't find this parameter, issue an error message. */ | |
971801ff | 136 | error ("invalid parameter %qs", name); |
c6d9a88c | 137 | } |
090fa0ab | 138 | |
48476d13 JM |
139 | /* Set the value of the parameter given by NUM to VALUE in PARAMS and |
140 | PARAMS_SET, implicitly, if it has not been set explicitly by the | |
141 | user. */ | |
128dc8e2 JM |
142 | |
143 | void | |
48476d13 JM |
144 | maybe_set_param_value (compiler_param num, int value, |
145 | int *params, int *params_set) | |
128dc8e2 | 146 | { |
48476d13 JM |
147 | if (!params_set[(int) num]) |
148 | set_param_value_internal (num, value, params, params_set, false); | |
128dc8e2 JM |
149 | } |
150 | ||
151 | /* Set the default value of a parameter given by NUM to VALUE, before | |
152 | option processing. */ | |
153 | ||
154 | void | |
155 | set_default_param_value (compiler_param num, int value) | |
156 | { | |
48476d13 JM |
157 | gcc_assert (!params_finished); |
158 | ||
159 | compiler_params[(int) num].default_value = value; | |
160 | } | |
161 | ||
162 | /* Return the default value of parameter NUM. */ | |
163 | ||
164 | int | |
165 | default_param_value (compiler_param num) | |
166 | { | |
167 | return compiler_params[(int) num].default_value; | |
168 | } | |
169 | ||
170 | /* Initialize an array PARAMS with default values of the | |
171 | parameters. */ | |
172 | ||
173 | void | |
174 | init_param_values (int *params) | |
175 | { | |
176 | size_t i; | |
177 | ||
178 | gcc_assert (params_finished); | |
179 | ||
180 | for (i = 0; i < num_compiler_params; i++) | |
181 | params[i] = compiler_params[i].default_value; | |
128dc8e2 JM |
182 | } |
183 | ||
090fa0ab GF |
184 | /* Return the current value of num_compiler_params, for the benefit of |
185 | plugins that use parameters as features. */ | |
186 | ||
187 | size_t | |
188 | get_num_compiler_params (void) | |
189 | { | |
190 | return num_compiler_params; | |
191 | } |