1 /* GNU/Linux/IA64 specific low level interface, for the remote server for GDB. 2 Copyright (C) 1995-2024 Free Software Foundation, Inc. 3 4 This file is part of GDB. 5 6 This program is free software; you can redistribute it and/or modify 7 it under the terms of the GNU General Public License as published by 8 the Free Software Foundation; either version 3 of the License, or 9 (at your option) any later version. 10 11 This program is distributed in the hope that it will be useful, 12 but WITHOUT ANY WARRANTY; without even the implied warranty of 13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 14 GNU General Public License for more details. 15 16 You should have received a copy of the GNU General Public License 17 along with this program. If not, see <http://www.gnu.org/licenses/>. */ 18 19 #include "linux-low.h" 20 21 #ifdef HAVE_SYS_REG_H 22 #include <sys/reg.h> 23 #endif 24 25 /* Linux target op definitions for the IA64 architecture. */ 26 27 class ia64_target : public linux_process_target 28 { 29 public: 30 31 const regs_info *get_regs_info () override; 32 33 const gdb_byte *sw_breakpoint_from_kind (int kind, int *size) override; 34 35 protected: 36 37 void low_arch_setup () override; 38 39 bool low_cannot_fetch_register (int regno) override; 40 41 bool low_cannot_store_register (int regno) override; 42 43 bool low_fetch_register (regcache *regcache, int regno) override; 44 45 bool low_breakpoint_at (CORE_ADDR pc) override; 46 }; 47 48 /* The singleton target ops object. */ 49 50 static ia64_target the_ia64_target; 51 52 const gdb_byte * 53 ia64_target::sw_breakpoint_from_kind (int kind, int *size) 54 { 55 gdb_assert_not_reached ("target op sw_breakpoint_from_kind is not " 56 "implemented by this target"); 57 } 58 59 bool 60 ia64_target::low_breakpoint_at (CORE_ADDR pc) 61 { 62 gdb_assert_not_reached ("linux target op low_breakpoint_at is not " 63 "implemented by this target"); 64 } 65 66 /* Defined in auto-generated file reg-ia64.c. */ 67 void init_registers_ia64 (void); 68 extern const struct target_desc *tdesc_ia64; 69 70 #define ia64_num_regs 462 71 72 #include <asm/ptrace_offsets.h> 73 74 static int ia64_regmap[] = 75 { 76 /* general registers */ 77 -1, /* gr0 not available; i.e, it's always zero */ 78 PT_R1, 79 PT_R2, 80 PT_R3, 81 PT_R4, 82 PT_R5, 83 PT_R6, 84 PT_R7, 85 PT_R8, 86 PT_R9, 87 PT_R10, 88 PT_R11, 89 PT_R12, 90 PT_R13, 91 PT_R14, 92 PT_R15, 93 PT_R16, 94 PT_R17, 95 PT_R18, 96 PT_R19, 97 PT_R20, 98 PT_R21, 99 PT_R22, 100 PT_R23, 101 PT_R24, 102 PT_R25, 103 PT_R26, 104 PT_R27, 105 PT_R28, 106 PT_R29, 107 PT_R30, 108 PT_R31, 109 /* gr32 through gr127 not directly available via the ptrace interface */ 110 -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, 111 -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, 112 -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, 113 -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, 114 -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, 115 -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, 116 /* Floating point registers */ 117 -1, -1, /* f0 and f1 not available (f0 is +0.0 and f1 is +1.0) */ 118 PT_F2, 119 PT_F3, 120 PT_F4, 121 PT_F5, 122 PT_F6, 123 PT_F7, 124 PT_F8, 125 PT_F9, 126 PT_F10, 127 PT_F11, 128 PT_F12, 129 PT_F13, 130 PT_F14, 131 PT_F15, 132 PT_F16, 133 PT_F17, 134 PT_F18, 135 PT_F19, 136 PT_F20, 137 PT_F21, 138 PT_F22, 139 PT_F23, 140 PT_F24, 141 PT_F25, 142 PT_F26, 143 PT_F27, 144 PT_F28, 145 PT_F29, 146 PT_F30, 147 PT_F31, 148 PT_F32, 149 PT_F33, 150 PT_F34, 151 PT_F35, 152 PT_F36, 153 PT_F37, 154 PT_F38, 155 PT_F39, 156 PT_F40, 157 PT_F41, 158 PT_F42, 159 PT_F43, 160 PT_F44, 161 PT_F45, 162 PT_F46, 163 PT_F47, 164 PT_F48, 165 PT_F49, 166 PT_F50, 167 PT_F51, 168 PT_F52, 169 PT_F53, 170 PT_F54, 171 PT_F55, 172 PT_F56, 173 PT_F57, 174 PT_F58, 175 PT_F59, 176 PT_F60, 177 PT_F61, 178 PT_F62, 179 PT_F63, 180 PT_F64, 181 PT_F65, 182 PT_F66, 183 PT_F67, 184 PT_F68, 185 PT_F69, 186 PT_F70, 187 PT_F71, 188 PT_F72, 189 PT_F73, 190 PT_F74, 191 PT_F75, 192 PT_F76, 193 PT_F77, 194 PT_F78, 195 PT_F79, 196 PT_F80, 197 PT_F81, 198 PT_F82, 199 PT_F83, 200 PT_F84, 201 PT_F85, 202 PT_F86, 203 PT_F87, 204 PT_F88, 205 PT_F89, 206 PT_F90, 207 PT_F91, 208 PT_F92, 209 PT_F93, 210 PT_F94, 211 PT_F95, 212 PT_F96, 213 PT_F97, 214 PT_F98, 215 PT_F99, 216 PT_F100, 217 PT_F101, 218 PT_F102, 219 PT_F103, 220 PT_F104, 221 PT_F105, 222 PT_F106, 223 PT_F107, 224 PT_F108, 225 PT_F109, 226 PT_F110, 227 PT_F111, 228 PT_F112, 229 PT_F113, 230 PT_F114, 231 PT_F115, 232 PT_F116, 233 PT_F117, 234 PT_F118, 235 PT_F119, 236 PT_F120, 237 PT_F121, 238 PT_F122, 239 PT_F123, 240 PT_F124, 241 PT_F125, 242 PT_F126, 243 PT_F127, 244 /* predicate registers - we don't fetch these individually */ 245 -1, -1, -1, -1, -1, -1, -1, -1, 246 -1, -1, -1, -1, -1, -1, -1, -1, 247 -1, -1, -1, -1, -1, -1, -1, -1, 248 -1, -1, -1, -1, -1, -1, -1, -1, 249 -1, -1, -1, -1, -1, -1, -1, -1, 250 -1, -1, -1, -1, -1, -1, -1, -1, 251 -1, -1, -1, -1, -1, -1, -1, -1, 252 -1, -1, -1, -1, -1, -1, -1, -1, 253 /* branch registers */ 254 PT_B0, 255 PT_B1, 256 PT_B2, 257 PT_B3, 258 PT_B4, 259 PT_B5, 260 PT_B6, 261 PT_B7, 262 /* virtual frame pointer and virtual return address pointer */ 263 -1, -1, 264 /* other registers */ 265 PT_PR, 266 PT_CR_IIP, /* ip */ 267 PT_CR_IPSR, /* psr */ 268 PT_CFM, /* cfm */ 269 /* kernel registers not visible via ptrace interface (?) */ 270 -1, -1, -1, -1, -1, -1, -1, -1, 271 /* hole */ 272 -1, -1, -1, -1, -1, -1, -1, -1, 273 PT_AR_RSC, 274 PT_AR_BSP, 275 PT_AR_BSPSTORE, 276 PT_AR_RNAT, 277 -1, 278 -1, /* Not available: FCR, IA32 floating control register */ 279 -1, -1, 280 -1, /* Not available: EFLAG */ 281 -1, /* Not available: CSD */ 282 -1, /* Not available: SSD */ 283 -1, /* Not available: CFLG */ 284 -1, /* Not available: FSR */ 285 -1, /* Not available: FIR */ 286 -1, /* Not available: FDR */ 287 -1, 288 PT_AR_CCV, 289 -1, -1, -1, 290 PT_AR_UNAT, 291 -1, -1, -1, 292 PT_AR_FPSR, 293 -1, -1, -1, 294 -1, /* Not available: ITC */ 295 -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, 296 -1, -1, -1, -1, -1, -1, -1, -1, -1, 297 PT_AR_PFS, 298 PT_AR_LC, 299 PT_AR_EC, 300 -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, 301 -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, 302 -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, 303 -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, 304 -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, 305 -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, 306 -1, 307 }; 308 309 bool 310 ia64_target::low_cannot_store_register (int regno) 311 { 312 return false; 313 } 314 315 bool 316 ia64_target::low_cannot_fetch_register (int regno) 317 { 318 return false; 319 } 320 321 /* GDB register numbers. */ 322 #define IA64_GR0_REGNUM 0 323 #define IA64_FR0_REGNUM 128 324 #define IA64_FR1_REGNUM 129 325 326 bool 327 ia64_target::low_fetch_register (regcache *regcache, int regnum) 328 { 329 /* r0 cannot be fetched but is always zero. */ 330 if (regnum == IA64_GR0_REGNUM) 331 { 332 const gdb_byte zero[8] = { 0 }; 333 334 gdb_assert (sizeof (zero) == register_size (regcache->tdesc, regnum)); 335 supply_register (regcache, regnum, zero); 336 return true; 337 } 338 339 /* fr0 cannot be fetched but is always zero. */ 340 if (regnum == IA64_FR0_REGNUM) 341 { 342 const gdb_byte f_zero[16] = { 0 }; 343 344 gdb_assert (sizeof (f_zero) == register_size (regcache->tdesc, regnum)); 345 supply_register (regcache, regnum, f_zero); 346 return true; 347 } 348 349 /* fr1 cannot be fetched but is always one (1.0). */ 350 if (regnum == IA64_FR1_REGNUM) 351 { 352 const gdb_byte f_one[16] = 353 { 0, 0, 0, 0, 0, 0, 0, 0x80, 0xff, 0xff, 0, 0, 0, 0, 0, 0 }; 354 355 gdb_assert (sizeof (f_one) == register_size (regcache->tdesc, regnum)); 356 supply_register (regcache, regnum, f_one); 357 return true; 358 } 359 360 return false; 361 } 362 363 static struct usrregs_info ia64_usrregs_info = 364 { 365 ia64_num_regs, 366 ia64_regmap, 367 }; 368 369 static struct regs_info myregs_info = 370 { 371 NULL, /* regset_bitmap */ 372 &ia64_usrregs_info 373 }; 374 375 const regs_info * 376 ia64_target::get_regs_info () 377 { 378 return &myregs_info; 379 } 380 381 void 382 ia64_target::low_arch_setup () 383 { 384 current_process ()->tdesc = tdesc_ia64; 385 } 386 387 /* The linux target ops object. */ 388 389 linux_process_target *the_linux_target = &the_ia64_target; 390 391 void 392 initialize_low_arch (void) 393 { 394 init_registers_ia64 (); 395 } 396
Indexes created Wed Mar 04 15:26:31 UTC 2026