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1 | /* v850 specific, C compiler specific functions. | |
2 | Copyright (C) 2000-2024 Free Software Foundation, Inc. | |
3 | Contributed by Jeff Law (law@cygnus.com). | |
4 | ||
5 | This file is part of GCC. | |
6 | ||
7 | GCC is free software; you can redistribute it and/or modify | |
8 | it under the terms of the GNU General Public License as published by | |
9 | the Free Software Foundation; either version 3, or (at your option) | |
10 | any later version. | |
11 | ||
12 | GCC is distributed in the hope that it will be useful, | |
13 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
14 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
15 | GNU General Public License for more details. | |
16 | ||
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/>. */ | |
20 | ||
21 | #define IN_TARGET_CODE 1 | |
22 | ||
23 | #include "config.h" | |
24 | #include "system.h" | |
25 | #include "coretypes.h" | |
26 | #include "tm.h" | |
27 | #include "tree.h" | |
28 | #include "stringpool.h" | |
29 | #include "diagnostic-core.h" | |
30 | #include "attribs.h" | |
31 | #include "c-family/c-pragma.h" | |
32 | ||
33 | #ifndef streq | |
34 | #define streq(a,b) (strcmp (a, b) == 0) | |
35 | #endif | |
36 | \f | |
37 | static int pop_data_area (v850_data_area); | |
38 | static int push_data_area (v850_data_area); | |
39 | static void mark_current_function_as_interrupt (void); | |
40 | \f | |
41 | /* Push a data area onto the stack. */ | |
42 | ||
43 | static int | |
44 | push_data_area (v850_data_area data_area) | |
45 | { | |
46 | data_area_stack_element * elem; | |
47 | ||
48 | elem = (data_area_stack_element *) xmalloc (sizeof (* elem)); | |
49 | ||
50 | if (elem == NULL) | |
51 | return 0; | |
52 | ||
53 | elem->prev = data_area_stack; | |
54 | elem->data_area = data_area; | |
55 | ||
56 | data_area_stack = elem; | |
57 | ||
58 | return 1; | |
59 | } | |
60 | ||
61 | /* Remove a data area from the stack. */ | |
62 | ||
63 | static int | |
64 | pop_data_area (v850_data_area data_area) | |
65 | { | |
66 | if (data_area_stack == NULL) | |
67 | warning (OPT_Wpragmas, "%<#pragma%> GHS endXXX found without " | |
68 | "previous startXXX"); | |
69 | else if (data_area != data_area_stack->data_area) | |
70 | warning (OPT_Wpragmas, "%<#pragma%> GHS endXXX does not match " | |
71 | "previous startXXX"); | |
72 | else | |
73 | { | |
74 | data_area_stack_element * elem; | |
75 | ||
76 | elem = data_area_stack; | |
77 | data_area_stack = data_area_stack->prev; | |
78 | ||
79 | free (elem); | |
80 | ||
81 | return 1; | |
82 | } | |
83 | ||
84 | return 0; | |
85 | } | |
86 | ||
87 | /* Set the machine specific 'interrupt' attribute on the current function. */ | |
88 | ||
89 | static void | |
90 | mark_current_function_as_interrupt (void) | |
91 | { | |
92 | tree name; | |
93 | ||
94 | if (current_function_decl == NULL_TREE) | |
95 | { | |
96 | warning (0, "cannot set interrupt attribute: no current function"); | |
97 | return; | |
98 | } | |
99 | ||
100 | name = get_identifier ("interrupt"); | |
101 | ||
102 | if (name == NULL_TREE || TREE_CODE (name) != IDENTIFIER_NODE) | |
103 | { | |
104 | warning (0, "cannot set interrupt attribute: no such identifier"); | |
105 | return; | |
106 | } | |
107 | ||
108 | decl_attributes (¤t_function_decl, | |
109 | tree_cons (name, NULL_TREE, NULL_TREE), 0); | |
110 | } | |
111 | ||
112 | \f | |
113 | /* Support for GHS pragmata. */ | |
114 | ||
115 | void | |
116 | ghs_pragma_section (cpp_reader * pfile ATTRIBUTE_UNUSED) | |
117 | { | |
118 | int repeat = 0; | |
119 | ||
120 | /* #pragma ghs section [name = alias [, name = alias [, ...]]] */ | |
121 | do | |
122 | { | |
123 | tree x; | |
124 | enum cpp_ttype type; | |
125 | tree sect_ident; | |
126 | const char *sect, *alias; | |
127 | enum GHS_section_kind kind; | |
128 | ||
129 | type = pragma_lex (&x); | |
130 | ||
131 | if (type == CPP_EOF && !repeat) | |
132 | goto reset; | |
133 | else if (type == CPP_NAME) | |
134 | { | |
135 | sect_ident = x; | |
136 | sect = IDENTIFIER_POINTER (sect_ident); | |
137 | } | |
138 | else | |
139 | goto bad; | |
140 | repeat = 0; | |
141 | ||
142 | if (pragma_lex (&x) != CPP_EQ) | |
143 | goto bad; | |
144 | if (pragma_lex (&x) != CPP_NAME) | |
145 | goto bad; | |
146 | ||
147 | alias = IDENTIFIER_POINTER (x); | |
148 | ||
149 | type = pragma_lex (&x); | |
150 | if (type == CPP_COMMA) | |
151 | repeat = 1; | |
152 | else if (type != CPP_EOF) | |
153 | warning (OPT_Wpragmas, "junk at end of %<#pragma%> ghs section"); | |
154 | ||
155 | if (streq (sect, "data")) kind = GHS_SECTION_KIND_DATA; | |
156 | else if (streq (sect, "text")) kind = GHS_SECTION_KIND_TEXT; | |
157 | else if (streq (sect, "rodata")) kind = GHS_SECTION_KIND_RODATA; | |
158 | else if (streq (sect, "const")) kind = GHS_SECTION_KIND_RODATA; | |
159 | else if (streq (sect, "rosdata")) kind = GHS_SECTION_KIND_ROSDATA; | |
160 | else if (streq (sect, "rozdata")) kind = GHS_SECTION_KIND_ROZDATA; | |
161 | else if (streq (sect, "sdata")) kind = GHS_SECTION_KIND_SDATA; | |
162 | else if (streq (sect, "tdata")) kind = GHS_SECTION_KIND_TDATA; | |
163 | else if (streq (sect, "zdata")) kind = GHS_SECTION_KIND_ZDATA; | |
164 | /* According to GHS beta documentation, the following should not be | |
165 | allowed! */ | |
166 | else if (streq (sect, "bss")) kind = GHS_SECTION_KIND_BSS; | |
167 | else if (streq (sect, "zbss")) kind = GHS_SECTION_KIND_ZDATA; | |
168 | else | |
169 | { | |
170 | warning (0, "unrecognized section name %qE", sect_ident); | |
171 | return; | |
172 | } | |
173 | ||
174 | if (streq (alias, "default")) | |
175 | GHS_current_section_names [kind] = NULL; | |
176 | else | |
177 | GHS_current_section_names [kind] = alias; | |
178 | } | |
179 | while (repeat); | |
180 | ||
181 | return; | |
182 | ||
183 | bad: | |
184 | warning (OPT_Wpragmas, "malformed %<#pragma%> ghs section"); | |
185 | return; | |
186 | ||
187 | reset: | |
188 | /* #pragma ghs section \n: Reset all section names back to their defaults. */ | |
189 | { | |
190 | int i; | |
191 | ||
192 | for (i = COUNT_OF_GHS_SECTION_KINDS; i--;) | |
193 | GHS_current_section_names [i] = NULL; | |
194 | } | |
195 | } | |
196 | ||
197 | void | |
198 | ghs_pragma_interrupt (cpp_reader * pfile ATTRIBUTE_UNUSED) | |
199 | { | |
200 | tree x; | |
201 | ||
202 | if (pragma_lex (&x) != CPP_EOF) | |
203 | warning (OPT_Wpragmas, "junk at end of %<#pragma%> ghs interrupt"); | |
204 | ||
205 | mark_current_function_as_interrupt (); | |
206 | } | |
207 | ||
208 | void | |
209 | ghs_pragma_starttda (cpp_reader * pfile ATTRIBUTE_UNUSED) | |
210 | { | |
211 | tree x; | |
212 | ||
213 | if (pragma_lex (&x) != CPP_EOF) | |
214 | warning (OPT_Wpragmas, "junk at end of %<#pragma%> ghs starttda"); | |
215 | ||
216 | push_data_area (DATA_AREA_TDA); | |
217 | } | |
218 | ||
219 | void | |
220 | ghs_pragma_startsda (cpp_reader * pfile ATTRIBUTE_UNUSED) | |
221 | { | |
222 | tree x; | |
223 | ||
224 | if (pragma_lex (&x) != CPP_EOF) | |
225 | warning (OPT_Wpragmas, "junk at end of %<#pragma%> ghs startsda"); | |
226 | ||
227 | push_data_area (DATA_AREA_SDA); | |
228 | } | |
229 | ||
230 | void | |
231 | ghs_pragma_startzda (cpp_reader * pfile ATTRIBUTE_UNUSED) | |
232 | { | |
233 | tree x; | |
234 | ||
235 | if (pragma_lex (&x) != CPP_EOF) | |
236 | warning (OPT_Wpragmas, "junk at end of %<#pragma%> ghs startzda"); | |
237 | ||
238 | push_data_area (DATA_AREA_ZDA); | |
239 | } | |
240 | ||
241 | void | |
242 | ghs_pragma_endtda (cpp_reader * pfile ATTRIBUTE_UNUSED) | |
243 | { | |
244 | tree x; | |
245 | ||
246 | if (pragma_lex (&x) != CPP_EOF) | |
247 | warning (OPT_Wpragmas, "junk at end of %<#pragma%> ghs endtda"); | |
248 | ||
249 | pop_data_area (DATA_AREA_TDA); | |
250 | } | |
251 | ||
252 | void | |
253 | ghs_pragma_endsda (cpp_reader * pfile ATTRIBUTE_UNUSED) | |
254 | { | |
255 | tree x; | |
256 | ||
257 | if (pragma_lex (&x) != CPP_EOF) | |
258 | warning (OPT_Wpragmas, "junk at end of %<#pragma%> ghs endsda"); | |
259 | ||
260 | pop_data_area (DATA_AREA_SDA); | |
261 | } | |
262 | ||
263 | void | |
264 | ghs_pragma_endzda (cpp_reader * pfile ATTRIBUTE_UNUSED) | |
265 | { | |
266 | tree x; | |
267 | ||
268 | if (pragma_lex (&x) != CPP_EOF) | |
269 | warning (OPT_Wpragmas, "junk at end of %<#pragma%> ghs endzda"); | |
270 | ||
271 | pop_data_area (DATA_AREA_ZDA); | |
272 | } |