1 /* v850 specific, C compiler specific functions. 2 Copyright (C) 2000-2020 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 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 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 endXXXX 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 } 111 112 113 /* 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 } 273