| 1 | /* GNU/Linux S/390 specific low level interface, for the remote server |
| 2 | for GDB. |
| 3 | Copyright (C) 2001-2013 Free Software Foundation, Inc. |
| 4 | |
| 5 | This file is part of GDB. |
| 6 | |
| 7 | This program 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 of the License, or |
| 10 | (at your option) any later version. |
| 11 | |
| 12 | This program 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 this program. If not, see <http://www.gnu.org/licenses/>. */ |
| 19 | |
| 20 | /* This file is used for both 31-bit and 64-bit S/390 systems. */ |
| 21 | |
| 22 | #include "server.h" |
| 23 | #include "linux-low.h" |
| 24 | #include "elf/common.h" |
| 25 | |
| 26 | #include <asm/ptrace.h> |
| 27 | #include <sys/ptrace.h> |
| 28 | #include <sys/uio.h> |
| 29 | #include <elf.h> |
| 30 | |
| 31 | #ifndef HWCAP_S390_HIGH_GPRS |
| 32 | #define HWCAP_S390_HIGH_GPRS 512 |
| 33 | #endif |
| 34 | |
| 35 | #ifndef PTRACE_GETREGSET |
| 36 | #define PTRACE_GETREGSET 0x4204 |
| 37 | #endif |
| 38 | |
| 39 | #ifndef PTRACE_SETREGSET |
| 40 | #define PTRACE_SETREGSET 0x4205 |
| 41 | #endif |
| 42 | |
| 43 | /* Defined in auto-generated file s390-linux32.c. */ |
| 44 | void init_registers_s390_linux32 (void); |
| 45 | extern const struct target_desc *tdesc_s390_linux32; |
| 46 | |
| 47 | /* Defined in auto-generated file s390-linux32v1.c. */ |
| 48 | void init_registers_s390_linux32v1 (void); |
| 49 | extern const struct target_desc *tdesc_s390_linux32v1; |
| 50 | |
| 51 | /* Defined in auto-generated file s390-linux32v2.c. */ |
| 52 | void init_registers_s390_linux32v2 (void); |
| 53 | extern const struct target_desc *tdesc_s390_linux32v2; |
| 54 | |
| 55 | /* Defined in auto-generated file s390-linux64.c. */ |
| 56 | void init_registers_s390_linux64 (void); |
| 57 | extern const struct target_desc *tdesc_s390_linux64; |
| 58 | |
| 59 | /* Defined in auto-generated file s390-linux64v1.c. */ |
| 60 | void init_registers_s390_linux64v1 (void); |
| 61 | extern const struct target_desc *tdesc_s390_linux64v1; |
| 62 | |
| 63 | /* Defined in auto-generated file s390-linux64v2.c. */ |
| 64 | void init_registers_s390_linux64v2 (void); |
| 65 | extern const struct target_desc *tdesc_s390_linux64v2; |
| 66 | |
| 67 | /* Defined in auto-generated file s390x-linux64.c. */ |
| 68 | void init_registers_s390x_linux64 (void); |
| 69 | extern const struct target_desc *tdesc_s390x_linux64; |
| 70 | |
| 71 | /* Defined in auto-generated file s390x-linux64v1.c. */ |
| 72 | void init_registers_s390x_linux64v1 (void); |
| 73 | extern const struct target_desc *tdesc_s390x_linux64v1; |
| 74 | |
| 75 | /* Defined in auto-generated file s390x-linux64v2.c. */ |
| 76 | void init_registers_s390x_linux64v2 (void); |
| 77 | extern const struct target_desc *tdesc_s390x_linux64v2; |
| 78 | |
| 79 | #define s390_num_regs 52 |
| 80 | |
| 81 | static int s390_regmap[] = { |
| 82 | PT_PSWMASK, PT_PSWADDR, |
| 83 | |
| 84 | PT_GPR0, PT_GPR1, PT_GPR2, PT_GPR3, |
| 85 | PT_GPR4, PT_GPR5, PT_GPR6, PT_GPR7, |
| 86 | PT_GPR8, PT_GPR9, PT_GPR10, PT_GPR11, |
| 87 | PT_GPR12, PT_GPR13, PT_GPR14, PT_GPR15, |
| 88 | |
| 89 | PT_ACR0, PT_ACR1, PT_ACR2, PT_ACR3, |
| 90 | PT_ACR4, PT_ACR5, PT_ACR6, PT_ACR7, |
| 91 | PT_ACR8, PT_ACR9, PT_ACR10, PT_ACR11, |
| 92 | PT_ACR12, PT_ACR13, PT_ACR14, PT_ACR15, |
| 93 | |
| 94 | PT_FPC, |
| 95 | |
| 96 | #ifndef __s390x__ |
| 97 | PT_FPR0_HI, PT_FPR1_HI, PT_FPR2_HI, PT_FPR3_HI, |
| 98 | PT_FPR4_HI, PT_FPR5_HI, PT_FPR6_HI, PT_FPR7_HI, |
| 99 | PT_FPR8_HI, PT_FPR9_HI, PT_FPR10_HI, PT_FPR11_HI, |
| 100 | PT_FPR12_HI, PT_FPR13_HI, PT_FPR14_HI, PT_FPR15_HI, |
| 101 | #else |
| 102 | PT_FPR0, PT_FPR1, PT_FPR2, PT_FPR3, |
| 103 | PT_FPR4, PT_FPR5, PT_FPR6, PT_FPR7, |
| 104 | PT_FPR8, PT_FPR9, PT_FPR10, PT_FPR11, |
| 105 | PT_FPR12, PT_FPR13, PT_FPR14, PT_FPR15, |
| 106 | #endif |
| 107 | |
| 108 | PT_ORIGGPR2, |
| 109 | }; |
| 110 | |
| 111 | #ifdef __s390x__ |
| 112 | #define s390_num_regs_3264 68 |
| 113 | |
| 114 | static int s390_regmap_3264[] = { |
| 115 | PT_PSWMASK, PT_PSWADDR, |
| 116 | |
| 117 | PT_GPR0, PT_GPR0, PT_GPR1, PT_GPR1, |
| 118 | PT_GPR2, PT_GPR2, PT_GPR3, PT_GPR3, |
| 119 | PT_GPR4, PT_GPR4, PT_GPR5, PT_GPR5, |
| 120 | PT_GPR6, PT_GPR6, PT_GPR7, PT_GPR7, |
| 121 | PT_GPR8, PT_GPR8, PT_GPR9, PT_GPR9, |
| 122 | PT_GPR10, PT_GPR10, PT_GPR11, PT_GPR11, |
| 123 | PT_GPR12, PT_GPR12, PT_GPR13, PT_GPR13, |
| 124 | PT_GPR14, PT_GPR14, PT_GPR15, PT_GPR15, |
| 125 | |
| 126 | PT_ACR0, PT_ACR1, PT_ACR2, PT_ACR3, |
| 127 | PT_ACR4, PT_ACR5, PT_ACR6, PT_ACR7, |
| 128 | PT_ACR8, PT_ACR9, PT_ACR10, PT_ACR11, |
| 129 | PT_ACR12, PT_ACR13, PT_ACR14, PT_ACR15, |
| 130 | |
| 131 | PT_FPC, |
| 132 | |
| 133 | PT_FPR0, PT_FPR1, PT_FPR2, PT_FPR3, |
| 134 | PT_FPR4, PT_FPR5, PT_FPR6, PT_FPR7, |
| 135 | PT_FPR8, PT_FPR9, PT_FPR10, PT_FPR11, |
| 136 | PT_FPR12, PT_FPR13, PT_FPR14, PT_FPR15, |
| 137 | |
| 138 | PT_ORIGGPR2, |
| 139 | }; |
| 140 | #endif |
| 141 | |
| 142 | |
| 143 | static int |
| 144 | s390_cannot_fetch_register (int regno) |
| 145 | { |
| 146 | return 0; |
| 147 | } |
| 148 | |
| 149 | static int |
| 150 | s390_cannot_store_register (int regno) |
| 151 | { |
| 152 | return 0; |
| 153 | } |
| 154 | |
| 155 | static void |
| 156 | s390_collect_ptrace_register (struct regcache *regcache, int regno, char *buf) |
| 157 | { |
| 158 | int size = register_size (regcache->tdesc, regno); |
| 159 | if (size < sizeof (long)) |
| 160 | { |
| 161 | const struct regs_info *regs_info = (*the_low_target.regs_info) (); |
| 162 | struct usrregs_info *usr = regs_info->usrregs; |
| 163 | int regaddr = usr->regmap[regno]; |
| 164 | |
| 165 | memset (buf, 0, sizeof (long)); |
| 166 | |
| 167 | if ((regno ^ 1) < usr->num_regs |
| 168 | && usr->regmap[regno ^ 1] == regaddr) |
| 169 | { |
| 170 | collect_register (regcache, regno & ~1, buf); |
| 171 | collect_register (regcache, (regno & ~1) + 1, |
| 172 | buf + sizeof (long) - size); |
| 173 | } |
| 174 | else if (regaddr == PT_PSWMASK) |
| 175 | { |
| 176 | /* Convert 4-byte PSW mask to 8 bytes by clearing bit 12 and copying |
| 177 | the basic addressing mode bit from the PSW address. */ |
| 178 | char *addr = alloca (register_size (regcache->tdesc, regno ^ 1)); |
| 179 | collect_register (regcache, regno, buf); |
| 180 | collect_register (regcache, regno ^ 1, addr); |
| 181 | buf[1] &= ~0x8; |
| 182 | buf[size] |= (addr[0] & 0x80); |
| 183 | } |
| 184 | else if (regaddr == PT_PSWADDR) |
| 185 | { |
| 186 | /* Convert 4-byte PSW address to 8 bytes by clearing the addressing |
| 187 | mode bit (which gets copied to the PSW mask instead). */ |
| 188 | collect_register (regcache, regno, buf + sizeof (long) - size); |
| 189 | buf[sizeof (long) - size] &= ~0x80; |
| 190 | } |
| 191 | else if ((regaddr >= PT_GPR0 && regaddr <= PT_GPR15) |
| 192 | || regaddr == PT_ORIGGPR2) |
| 193 | collect_register (regcache, regno, buf + sizeof (long) - size); |
| 194 | else |
| 195 | collect_register (regcache, regno, buf); |
| 196 | } |
| 197 | else |
| 198 | collect_register (regcache, regno, buf); |
| 199 | } |
| 200 | |
| 201 | static void |
| 202 | s390_supply_ptrace_register (struct regcache *regcache, |
| 203 | int regno, const char *buf) |
| 204 | { |
| 205 | int size = register_size (regcache->tdesc, regno); |
| 206 | if (size < sizeof (long)) |
| 207 | { |
| 208 | const struct regs_info *regs_info = (*the_low_target.regs_info) (); |
| 209 | struct usrregs_info *usr = regs_info->usrregs; |
| 210 | int regaddr = usr->regmap[regno]; |
| 211 | |
| 212 | if ((regno ^ 1) < usr->num_regs |
| 213 | && usr->regmap[regno ^ 1] == regaddr) |
| 214 | { |
| 215 | supply_register (regcache, regno & ~1, buf); |
| 216 | supply_register (regcache, (regno & ~1) + 1, |
| 217 | buf + sizeof (long) - size); |
| 218 | } |
| 219 | else if (regaddr == PT_PSWMASK) |
| 220 | { |
| 221 | /* Convert 8-byte PSW mask to 4 bytes by setting bit 12 and copying |
| 222 | the basic addressing mode into the PSW address. */ |
| 223 | char *mask = alloca (size); |
| 224 | char *addr = alloca (register_size (regcache->tdesc, regno ^ 1)); |
| 225 | memcpy (mask, buf, size); |
| 226 | mask[1] |= 0x8; |
| 227 | supply_register (regcache, regno, mask); |
| 228 | |
| 229 | collect_register (regcache, regno ^ 1, addr); |
| 230 | addr[0] &= ~0x80; |
| 231 | addr[0] |= (buf[size] & 0x80); |
| 232 | supply_register (regcache, regno ^ 1, addr); |
| 233 | } |
| 234 | else if (regaddr == PT_PSWADDR) |
| 235 | { |
| 236 | /* Convert 8-byte PSW address to 4 bytes by truncating, but |
| 237 | keeping the addressing mode bit (which was set from the mask). */ |
| 238 | char *addr = alloca (size); |
| 239 | char amode; |
| 240 | collect_register (regcache, regno, addr); |
| 241 | amode = addr[0] & 0x80; |
| 242 | memcpy (addr, buf + sizeof (long) - size, size); |
| 243 | addr[0] &= ~0x80; |
| 244 | addr[0] |= amode; |
| 245 | supply_register (regcache, regno, addr); |
| 246 | } |
| 247 | else if ((regaddr >= PT_GPR0 && regaddr <= PT_GPR15) |
| 248 | || regaddr == PT_ORIGGPR2) |
| 249 | supply_register (regcache, regno, buf + sizeof (long) - size); |
| 250 | else |
| 251 | supply_register (regcache, regno, buf); |
| 252 | } |
| 253 | else |
| 254 | supply_register (regcache, regno, buf); |
| 255 | } |
| 256 | |
| 257 | /* Provide only a fill function for the general register set. ps_lgetregs |
| 258 | will use this for NPTL support. */ |
| 259 | |
| 260 | static void |
| 261 | s390_fill_gregset (struct regcache *regcache, void *buf) |
| 262 | { |
| 263 | int i; |
| 264 | const struct regs_info *regs_info = (*the_low_target.regs_info) (); |
| 265 | struct usrregs_info *usr = regs_info->usrregs; |
| 266 | |
| 267 | for (i = 0; i < usr->num_regs; i++) |
| 268 | { |
| 269 | if (usr->regmap[i] < PT_PSWMASK |
| 270 | || usr->regmap[i] > PT_ACR15) |
| 271 | continue; |
| 272 | |
| 273 | s390_collect_ptrace_register (regcache, i, |
| 274 | (char *) buf + usr->regmap[i]); |
| 275 | } |
| 276 | } |
| 277 | |
| 278 | /* Fill and store functions for extended register sets. */ |
| 279 | |
| 280 | static void |
| 281 | s390_fill_last_break (struct regcache *regcache, void *buf) |
| 282 | { |
| 283 | /* Last break address is read-only. */ |
| 284 | } |
| 285 | |
| 286 | static void |
| 287 | s390_store_last_break (struct regcache *regcache, const void *buf) |
| 288 | { |
| 289 | const char *p; |
| 290 | |
| 291 | p = (const char *) buf + 8 - register_size (regcache->tdesc, 0); |
| 292 | supply_register_by_name (regcache, "last_break", p); |
| 293 | } |
| 294 | |
| 295 | static void |
| 296 | s390_fill_system_call (struct regcache *regcache, void *buf) |
| 297 | { |
| 298 | collect_register_by_name (regcache, "system_call", buf); |
| 299 | } |
| 300 | |
| 301 | static void |
| 302 | s390_store_system_call (struct regcache *regcache, const void *buf) |
| 303 | { |
| 304 | supply_register_by_name (regcache, "system_call", buf); |
| 305 | } |
| 306 | |
| 307 | static struct regset_info s390_regsets[] = { |
| 308 | { 0, 0, 0, 0, GENERAL_REGS, s390_fill_gregset, NULL }, |
| 309 | /* Last break address is read-only; do not attempt PTRACE_SETREGSET. */ |
| 310 | { PTRACE_GETREGSET, PTRACE_GETREGSET, NT_S390_LAST_BREAK, 0, |
| 311 | EXTENDED_REGS, s390_fill_last_break, s390_store_last_break }, |
| 312 | { PTRACE_GETREGSET, PTRACE_SETREGSET, NT_S390_SYSTEM_CALL, 0, |
| 313 | EXTENDED_REGS, s390_fill_system_call, s390_store_system_call }, |
| 314 | { 0, 0, 0, -1, -1, NULL, NULL } |
| 315 | }; |
| 316 | |
| 317 | |
| 318 | static const unsigned char s390_breakpoint[] = { 0, 1 }; |
| 319 | #define s390_breakpoint_len 2 |
| 320 | |
| 321 | static CORE_ADDR |
| 322 | s390_get_pc (struct regcache *regcache) |
| 323 | { |
| 324 | if (register_size (regcache->tdesc, 0) == 4) |
| 325 | { |
| 326 | unsigned int pswa; |
| 327 | collect_register_by_name (regcache, "pswa", &pswa); |
| 328 | return pswa & 0x7fffffff; |
| 329 | } |
| 330 | else |
| 331 | { |
| 332 | unsigned long pc; |
| 333 | collect_register_by_name (regcache, "pswa", &pc); |
| 334 | return pc; |
| 335 | } |
| 336 | } |
| 337 | |
| 338 | static void |
| 339 | s390_set_pc (struct regcache *regcache, CORE_ADDR newpc) |
| 340 | { |
| 341 | if (register_size (regcache->tdesc, 0) == 4) |
| 342 | { |
| 343 | unsigned int pswa; |
| 344 | collect_register_by_name (regcache, "pswa", &pswa); |
| 345 | pswa = (pswa & 0x80000000) | (newpc & 0x7fffffff); |
| 346 | supply_register_by_name (regcache, "pswa", &pswa); |
| 347 | } |
| 348 | else |
| 349 | { |
| 350 | unsigned long pc = newpc; |
| 351 | supply_register_by_name (regcache, "pswa", &pc); |
| 352 | } |
| 353 | } |
| 354 | |
| 355 | #ifdef __s390x__ |
| 356 | static unsigned long |
| 357 | s390_get_hwcap (const struct target_desc *tdesc) |
| 358 | { |
| 359 | int wordsize = register_size (tdesc, 0); |
| 360 | unsigned char *data = alloca (2 * wordsize); |
| 361 | int offset = 0; |
| 362 | |
| 363 | while ((*the_target->read_auxv) (offset, data, 2 * wordsize) == 2 * wordsize) |
| 364 | { |
| 365 | if (wordsize == 4) |
| 366 | { |
| 367 | unsigned int *data_p = (unsigned int *)data; |
| 368 | if (data_p[0] == AT_HWCAP) |
| 369 | return data_p[1]; |
| 370 | } |
| 371 | else |
| 372 | { |
| 373 | unsigned long *data_p = (unsigned long *)data; |
| 374 | if (data_p[0] == AT_HWCAP) |
| 375 | return data_p[1]; |
| 376 | } |
| 377 | |
| 378 | offset += 2 * wordsize; |
| 379 | } |
| 380 | |
| 381 | return 0; |
| 382 | } |
| 383 | #endif |
| 384 | |
| 385 | static int |
| 386 | s390_check_regset (int pid, int regset, int regsize) |
| 387 | { |
| 388 | gdb_byte *buf = alloca (regsize); |
| 389 | struct iovec iov; |
| 390 | |
| 391 | iov.iov_base = buf; |
| 392 | iov.iov_len = regsize; |
| 393 | |
| 394 | if (ptrace (PTRACE_GETREGSET, pid, (long) regset, (long) &iov) < 0) |
| 395 | return 0; |
| 396 | else |
| 397 | return 1; |
| 398 | } |
| 399 | |
| 400 | #ifdef __s390x__ |
| 401 | /* For a 31-bit inferior, whether the kernel supports using the full |
| 402 | 64-bit GPRs. */ |
| 403 | static int have_hwcap_s390_high_gprs = 0; |
| 404 | #endif |
| 405 | |
| 406 | static void |
| 407 | s390_arch_setup (void) |
| 408 | { |
| 409 | const struct target_desc *tdesc; |
| 410 | struct regset_info *regset; |
| 411 | |
| 412 | /* Check whether the kernel supports extra register sets. */ |
| 413 | int pid = pid_of (get_thread_lwp (current_inferior)); |
| 414 | int have_regset_last_break |
| 415 | = s390_check_regset (pid, NT_S390_LAST_BREAK, 8); |
| 416 | int have_regset_system_call |
| 417 | = s390_check_regset (pid, NT_S390_SYSTEM_CALL, 4); |
| 418 | |
| 419 | /* Update target_regsets according to available register sets. */ |
| 420 | for (regset = s390_regsets; regset->fill_function != NULL; regset++) |
| 421 | if (regset->get_request == PTRACE_GETREGSET) |
| 422 | switch (regset->nt_type) |
| 423 | { |
| 424 | case NT_S390_LAST_BREAK: |
| 425 | regset->size = have_regset_last_break? 8 : 0; |
| 426 | break; |
| 427 | case NT_S390_SYSTEM_CALL: |
| 428 | regset->size = have_regset_system_call? 4 : 0; |
| 429 | break; |
| 430 | default: |
| 431 | break; |
| 432 | } |
| 433 | |
| 434 | /* Assume 31-bit inferior process. */ |
| 435 | if (have_regset_system_call) |
| 436 | tdesc = tdesc_s390_linux32v2; |
| 437 | else if (have_regset_last_break) |
| 438 | tdesc = tdesc_s390_linux32v1; |
| 439 | else |
| 440 | tdesc = tdesc_s390_linux32; |
| 441 | |
| 442 | /* On a 64-bit host, check the low bit of the (31-bit) PSWM |
| 443 | -- if this is one, we actually have a 64-bit inferior. */ |
| 444 | #ifdef __s390x__ |
| 445 | { |
| 446 | unsigned int pswm; |
| 447 | struct regcache *regcache = new_register_cache (tdesc); |
| 448 | fetch_inferior_registers (regcache, find_regno (tdesc, "pswm")); |
| 449 | collect_register_by_name (regcache, "pswm", &pswm); |
| 450 | free_register_cache (regcache); |
| 451 | |
| 452 | if (pswm & 1) |
| 453 | { |
| 454 | if (have_regset_system_call) |
| 455 | tdesc = tdesc_s390x_linux64v2; |
| 456 | else if (have_regset_last_break) |
| 457 | tdesc = tdesc_s390x_linux64v1; |
| 458 | else |
| 459 | tdesc = tdesc_s390x_linux64; |
| 460 | } |
| 461 | |
| 462 | /* For a 31-bit inferior, check whether the kernel supports |
| 463 | using the full 64-bit GPRs. */ |
| 464 | else if (s390_get_hwcap (tdesc) & HWCAP_S390_HIGH_GPRS) |
| 465 | { |
| 466 | have_hwcap_s390_high_gprs = 1; |
| 467 | |
| 468 | if (have_regset_system_call) |
| 469 | tdesc = tdesc_s390_linux64v2; |
| 470 | else if (have_regset_last_break) |
| 471 | tdesc = tdesc_s390_linux64v1; |
| 472 | else |
| 473 | tdesc = tdesc_s390_linux64; |
| 474 | } |
| 475 | } |
| 476 | #endif |
| 477 | current_process ()->tdesc = tdesc; |
| 478 | } |
| 479 | |
| 480 | |
| 481 | static int |
| 482 | s390_breakpoint_at (CORE_ADDR pc) |
| 483 | { |
| 484 | unsigned char c[s390_breakpoint_len]; |
| 485 | read_inferior_memory (pc, c, s390_breakpoint_len); |
| 486 | return memcmp (c, s390_breakpoint, s390_breakpoint_len) == 0; |
| 487 | } |
| 488 | |
| 489 | static struct usrregs_info s390_usrregs_info = |
| 490 | { |
| 491 | s390_num_regs, |
| 492 | s390_regmap, |
| 493 | }; |
| 494 | |
| 495 | static struct regsets_info s390_regsets_info = |
| 496 | { |
| 497 | s390_regsets, /* regsets */ |
| 498 | 0, /* num_regsets */ |
| 499 | NULL, /* disabled_regsets */ |
| 500 | }; |
| 501 | |
| 502 | static struct regs_info regs_info = |
| 503 | { |
| 504 | NULL, /* regset_bitmap */ |
| 505 | &s390_usrregs_info, |
| 506 | &s390_regsets_info |
| 507 | }; |
| 508 | |
| 509 | #ifdef __s390x__ |
| 510 | static struct usrregs_info s390_usrregs_info_3264 = |
| 511 | { |
| 512 | s390_num_regs_3264, |
| 513 | s390_regmap_3264 |
| 514 | }; |
| 515 | |
| 516 | static struct regsets_info s390_regsets_info_3264 = |
| 517 | { |
| 518 | s390_regsets, /* regsets */ |
| 519 | 0, /* num_regsets */ |
| 520 | NULL, /* disabled_regsets */ |
| 521 | }; |
| 522 | |
| 523 | static struct regs_info regs_info_3264 = |
| 524 | { |
| 525 | NULL, /* regset_bitmap */ |
| 526 | &s390_usrregs_info_3264, |
| 527 | &s390_regsets_info_3264 |
| 528 | }; |
| 529 | #endif |
| 530 | |
| 531 | static const struct regs_info * |
| 532 | s390_regs_info (void) |
| 533 | { |
| 534 | #ifdef __s390x__ |
| 535 | if (have_hwcap_s390_high_gprs) |
| 536 | { |
| 537 | const struct target_desc *tdesc = current_process ()->tdesc; |
| 538 | |
| 539 | if (register_size (tdesc, 0) == 4) |
| 540 | return ®s_info_3264; |
| 541 | } |
| 542 | #endif |
| 543 | return ®s_info; |
| 544 | } |
| 545 | |
| 546 | struct linux_target_ops the_low_target = { |
| 547 | s390_arch_setup, |
| 548 | s390_regs_info, |
| 549 | s390_cannot_fetch_register, |
| 550 | s390_cannot_store_register, |
| 551 | NULL, /* fetch_register */ |
| 552 | s390_get_pc, |
| 553 | s390_set_pc, |
| 554 | s390_breakpoint, |
| 555 | s390_breakpoint_len, |
| 556 | NULL, |
| 557 | s390_breakpoint_len, |
| 558 | s390_breakpoint_at, |
| 559 | NULL, |
| 560 | NULL, |
| 561 | NULL, |
| 562 | NULL, |
| 563 | s390_collect_ptrace_register, |
| 564 | s390_supply_ptrace_register, |
| 565 | }; |
| 566 | |
| 567 | void |
| 568 | initialize_low_arch (void) |
| 569 | { |
| 570 | /* Initialize the Linux target descriptions. */ |
| 571 | |
| 572 | init_registers_s390_linux32 (); |
| 573 | init_registers_s390_linux32v1 (); |
| 574 | init_registers_s390_linux32v2 (); |
| 575 | init_registers_s390_linux64 (); |
| 576 | init_registers_s390_linux64v1 (); |
| 577 | init_registers_s390_linux64v2 (); |
| 578 | init_registers_s390x_linux64 (); |
| 579 | init_registers_s390x_linux64v1 (); |
| 580 | init_registers_s390x_linux64v2 (); |
| 581 | |
| 582 | initialize_regsets_info (&s390_regsets_info); |
| 583 | #ifdef __s390x__ |
| 584 | initialize_regsets_info (&s390_regsets_info_3264); |
| 585 | #endif |
| 586 | } |