| 1 | /* GNU/Linux on ARM native support. |
| 2 | Copyright 1999, 2000, 2001, 2002 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 2 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, write to the Free Software |
| 18 | Foundation, Inc., 59 Temple Place - Suite 330, |
| 19 | Boston, MA 02111-1307, USA. */ |
| 20 | |
| 21 | #include "defs.h" |
| 22 | #include "inferior.h" |
| 23 | #include "gdbcore.h" |
| 24 | #include "gdb_string.h" |
| 25 | #include "regcache.h" |
| 26 | |
| 27 | #include "arm-tdep.h" |
| 28 | |
| 29 | #include <sys/user.h> |
| 30 | #include <sys/ptrace.h> |
| 31 | #include <sys/utsname.h> |
| 32 | #include <sys/procfs.h> |
| 33 | |
| 34 | /* Prototypes for supply_gregset etc. */ |
| 35 | #include "gregset.h" |
| 36 | |
| 37 | extern int arm_apcs_32; |
| 38 | |
| 39 | #define typeNone 0x00 |
| 40 | #define typeSingle 0x01 |
| 41 | #define typeDouble 0x02 |
| 42 | #define typeExtended 0x03 |
| 43 | #define FPWORDS 28 |
| 44 | #define ARM_CPSR_REGNUM 16 |
| 45 | |
| 46 | typedef union tagFPREG |
| 47 | { |
| 48 | unsigned int fSingle; |
| 49 | unsigned int fDouble[2]; |
| 50 | unsigned int fExtended[3]; |
| 51 | } |
| 52 | FPREG; |
| 53 | |
| 54 | typedef struct tagFPA11 |
| 55 | { |
| 56 | FPREG fpreg[8]; /* 8 floating point registers */ |
| 57 | unsigned int fpsr; /* floating point status register */ |
| 58 | unsigned int fpcr; /* floating point control register */ |
| 59 | unsigned char fType[8]; /* type of floating point value held in |
| 60 | floating point registers. */ |
| 61 | int initflag; /* NWFPE initialization flag. */ |
| 62 | } |
| 63 | FPA11; |
| 64 | |
| 65 | /* The following variables are used to determine the version of the |
| 66 | underlying GNU/Linux operating system. Examples: |
| 67 | |
| 68 | GNU/Linux 2.0.35 GNU/Linux 2.2.12 |
| 69 | os_version = 0x00020023 os_version = 0x0002020c |
| 70 | os_major = 2 os_major = 2 |
| 71 | os_minor = 0 os_minor = 2 |
| 72 | os_release = 35 os_release = 12 |
| 73 | |
| 74 | Note: os_version = (os_major << 16) | (os_minor << 8) | os_release |
| 75 | |
| 76 | These are initialized using get_linux_version() from |
| 77 | _initialize_arm_linux_nat(). */ |
| 78 | |
| 79 | static unsigned int os_version, os_major, os_minor, os_release; |
| 80 | |
| 81 | /* On GNU/Linux, threads are implemented as pseudo-processes, in which |
| 82 | case we may be tracing more than one process at a time. In that |
| 83 | case, inferior_ptid will contain the main process ID and the |
| 84 | individual thread (process) ID. get_thread_id () is used to get |
| 85 | the thread id if it's available, and the process id otherwise. */ |
| 86 | |
| 87 | int |
| 88 | get_thread_id (ptid_t ptid) |
| 89 | { |
| 90 | int tid = TIDGET (ptid); |
| 91 | if (0 == tid) |
| 92 | tid = PIDGET (ptid); |
| 93 | return tid; |
| 94 | } |
| 95 | #define GET_THREAD_ID(PTID) get_thread_id ((PTID)); |
| 96 | |
| 97 | static void |
| 98 | fetch_nwfpe_single (unsigned int fn, FPA11 * fpa11) |
| 99 | { |
| 100 | unsigned int mem[3]; |
| 101 | |
| 102 | mem[0] = fpa11->fpreg[fn].fSingle; |
| 103 | mem[1] = 0; |
| 104 | mem[2] = 0; |
| 105 | regcache_raw_supply (current_regcache, ARM_F0_REGNUM + fn, (char *) &mem[0]); |
| 106 | } |
| 107 | |
| 108 | static void |
| 109 | fetch_nwfpe_double (unsigned int fn, FPA11 * fpa11) |
| 110 | { |
| 111 | unsigned int mem[3]; |
| 112 | |
| 113 | mem[0] = fpa11->fpreg[fn].fDouble[1]; |
| 114 | mem[1] = fpa11->fpreg[fn].fDouble[0]; |
| 115 | mem[2] = 0; |
| 116 | regcache_raw_supply (current_regcache, ARM_F0_REGNUM + fn, (char *) &mem[0]); |
| 117 | } |
| 118 | |
| 119 | static void |
| 120 | fetch_nwfpe_none (unsigned int fn) |
| 121 | { |
| 122 | unsigned int mem[3] = |
| 123 | {0, 0, 0}; |
| 124 | |
| 125 | regcache_raw_supply (current_regcache, ARM_F0_REGNUM + fn, (char *) &mem[0]); |
| 126 | } |
| 127 | |
| 128 | static void |
| 129 | fetch_nwfpe_extended (unsigned int fn, FPA11 * fpa11) |
| 130 | { |
| 131 | unsigned int mem[3]; |
| 132 | |
| 133 | mem[0] = fpa11->fpreg[fn].fExtended[0]; /* sign & exponent */ |
| 134 | mem[1] = fpa11->fpreg[fn].fExtended[2]; /* ls bits */ |
| 135 | mem[2] = fpa11->fpreg[fn].fExtended[1]; /* ms bits */ |
| 136 | regcache_raw_supply (current_regcache, ARM_F0_REGNUM + fn, (char *) &mem[0]); |
| 137 | } |
| 138 | |
| 139 | static void |
| 140 | fetch_nwfpe_register (int regno, FPA11 * fpa11) |
| 141 | { |
| 142 | int fn = regno - ARM_F0_REGNUM; |
| 143 | |
| 144 | switch (fpa11->fType[fn]) |
| 145 | { |
| 146 | case typeSingle: |
| 147 | fetch_nwfpe_single (fn, fpa11); |
| 148 | break; |
| 149 | |
| 150 | case typeDouble: |
| 151 | fetch_nwfpe_double (fn, fpa11); |
| 152 | break; |
| 153 | |
| 154 | case typeExtended: |
| 155 | fetch_nwfpe_extended (fn, fpa11); |
| 156 | break; |
| 157 | |
| 158 | default: |
| 159 | fetch_nwfpe_none (fn); |
| 160 | } |
| 161 | } |
| 162 | |
| 163 | static void |
| 164 | store_nwfpe_single (unsigned int fn, FPA11 *fpa11) |
| 165 | { |
| 166 | unsigned int mem[3]; |
| 167 | |
| 168 | regcache_raw_collect (current_regcache, ARM_F0_REGNUM + fn, |
| 169 | (char *) &mem[0]); |
| 170 | fpa11->fpreg[fn].fSingle = mem[0]; |
| 171 | fpa11->fType[fn] = typeSingle; |
| 172 | } |
| 173 | |
| 174 | static void |
| 175 | store_nwfpe_double (unsigned int fn, FPA11 *fpa11) |
| 176 | { |
| 177 | unsigned int mem[3]; |
| 178 | |
| 179 | regcache_raw_collect (current_regcache, ARM_F0_REGNUM + fn, |
| 180 | (char *) &mem[0]); |
| 181 | fpa11->fpreg[fn].fDouble[1] = mem[0]; |
| 182 | fpa11->fpreg[fn].fDouble[0] = mem[1]; |
| 183 | fpa11->fType[fn] = typeDouble; |
| 184 | } |
| 185 | |
| 186 | void |
| 187 | store_nwfpe_extended (unsigned int fn, FPA11 *fpa11) |
| 188 | { |
| 189 | unsigned int mem[3]; |
| 190 | |
| 191 | regcache_raw_collect (current_regcache, ARM_F0_REGNUM + fn, |
| 192 | (char *) &mem[0]); |
| 193 | fpa11->fpreg[fn].fExtended[0] = mem[0]; /* sign & exponent */ |
| 194 | fpa11->fpreg[fn].fExtended[2] = mem[1]; /* ls bits */ |
| 195 | fpa11->fpreg[fn].fExtended[1] = mem[2]; /* ms bits */ |
| 196 | fpa11->fType[fn] = typeDouble; |
| 197 | } |
| 198 | |
| 199 | void |
| 200 | store_nwfpe_register (int regno, FPA11 * fpa11) |
| 201 | { |
| 202 | if (register_cached (regno)) |
| 203 | { |
| 204 | unsigned int fn = regno - ARM_F0_REGNUM; |
| 205 | switch (fpa11->fType[fn]) |
| 206 | { |
| 207 | case typeSingle: |
| 208 | store_nwfpe_single (fn, fpa11); |
| 209 | break; |
| 210 | |
| 211 | case typeDouble: |
| 212 | store_nwfpe_double (fn, fpa11); |
| 213 | break; |
| 214 | |
| 215 | case typeExtended: |
| 216 | store_nwfpe_extended (fn, fpa11); |
| 217 | break; |
| 218 | } |
| 219 | } |
| 220 | } |
| 221 | |
| 222 | |
| 223 | /* Get the value of a particular register from the floating point |
| 224 | state of the process and store it into regcache. */ |
| 225 | |
| 226 | static void |
| 227 | fetch_fpregister (int regno) |
| 228 | { |
| 229 | int ret, tid; |
| 230 | FPA11 fp; |
| 231 | |
| 232 | /* Get the thread id for the ptrace call. */ |
| 233 | tid = GET_THREAD_ID (inferior_ptid); |
| 234 | |
| 235 | /* Read the floating point state. */ |
| 236 | ret = ptrace (PT_GETFPREGS, tid, 0, &fp); |
| 237 | if (ret < 0) |
| 238 | { |
| 239 | warning (_("Unable to fetch floating point register.")); |
| 240 | return; |
| 241 | } |
| 242 | |
| 243 | /* Fetch fpsr. */ |
| 244 | if (ARM_FPS_REGNUM == regno) |
| 245 | regcache_raw_supply (current_regcache, ARM_FPS_REGNUM, (char *) &fp.fpsr); |
| 246 | |
| 247 | /* Fetch the floating point register. */ |
| 248 | if (regno >= ARM_F0_REGNUM && regno <= ARM_F7_REGNUM) |
| 249 | { |
| 250 | int fn = regno - ARM_F0_REGNUM; |
| 251 | |
| 252 | switch (fp.fType[fn]) |
| 253 | { |
| 254 | case typeSingle: |
| 255 | fetch_nwfpe_single (fn, &fp); |
| 256 | break; |
| 257 | |
| 258 | case typeDouble: |
| 259 | fetch_nwfpe_double (fn, &fp); |
| 260 | break; |
| 261 | |
| 262 | case typeExtended: |
| 263 | fetch_nwfpe_extended (fn, &fp); |
| 264 | break; |
| 265 | |
| 266 | default: |
| 267 | fetch_nwfpe_none (fn); |
| 268 | } |
| 269 | } |
| 270 | } |
| 271 | |
| 272 | /* Get the whole floating point state of the process and store it |
| 273 | into regcache. */ |
| 274 | |
| 275 | static void |
| 276 | fetch_fpregs (void) |
| 277 | { |
| 278 | int ret, regno, tid; |
| 279 | FPA11 fp; |
| 280 | |
| 281 | /* Get the thread id for the ptrace call. */ |
| 282 | tid = GET_THREAD_ID (inferior_ptid); |
| 283 | |
| 284 | /* Read the floating point state. */ |
| 285 | ret = ptrace (PT_GETFPREGS, tid, 0, &fp); |
| 286 | if (ret < 0) |
| 287 | { |
| 288 | warning (_("Unable to fetch the floating point registers.")); |
| 289 | return; |
| 290 | } |
| 291 | |
| 292 | /* Fetch fpsr. */ |
| 293 | regcache_raw_supply (current_regcache, ARM_FPS_REGNUM, (char *) &fp.fpsr); |
| 294 | |
| 295 | /* Fetch the floating point registers. */ |
| 296 | for (regno = ARM_F0_REGNUM; regno <= ARM_F7_REGNUM; regno++) |
| 297 | { |
| 298 | int fn = regno - ARM_F0_REGNUM; |
| 299 | |
| 300 | switch (fp.fType[fn]) |
| 301 | { |
| 302 | case typeSingle: |
| 303 | fetch_nwfpe_single (fn, &fp); |
| 304 | break; |
| 305 | |
| 306 | case typeDouble: |
| 307 | fetch_nwfpe_double (fn, &fp); |
| 308 | break; |
| 309 | |
| 310 | case typeExtended: |
| 311 | fetch_nwfpe_extended (fn, &fp); |
| 312 | break; |
| 313 | |
| 314 | default: |
| 315 | fetch_nwfpe_none (fn); |
| 316 | } |
| 317 | } |
| 318 | } |
| 319 | |
| 320 | /* Save a particular register into the floating point state of the |
| 321 | process using the contents from regcache. */ |
| 322 | |
| 323 | static void |
| 324 | store_fpregister (int regno) |
| 325 | { |
| 326 | int ret, tid; |
| 327 | FPA11 fp; |
| 328 | |
| 329 | /* Get the thread id for the ptrace call. */ |
| 330 | tid = GET_THREAD_ID (inferior_ptid); |
| 331 | |
| 332 | /* Read the floating point state. */ |
| 333 | ret = ptrace (PT_GETFPREGS, tid, 0, &fp); |
| 334 | if (ret < 0) |
| 335 | { |
| 336 | warning (_("Unable to fetch the floating point registers.")); |
| 337 | return; |
| 338 | } |
| 339 | |
| 340 | /* Store fpsr. */ |
| 341 | if (ARM_FPS_REGNUM == regno && register_cached (ARM_FPS_REGNUM)) |
| 342 | regcache_raw_collect (current_regcache, ARM_FPS_REGNUM, (char *) &fp.fpsr); |
| 343 | |
| 344 | /* Store the floating point register. */ |
| 345 | if (regno >= ARM_F0_REGNUM && regno <= ARM_F7_REGNUM) |
| 346 | { |
| 347 | store_nwfpe_register (regno, &fp); |
| 348 | } |
| 349 | |
| 350 | ret = ptrace (PTRACE_SETFPREGS, tid, 0, &fp); |
| 351 | if (ret < 0) |
| 352 | { |
| 353 | warning (_("Unable to store floating point register.")); |
| 354 | return; |
| 355 | } |
| 356 | } |
| 357 | |
| 358 | /* Save the whole floating point state of the process using |
| 359 | the contents from regcache. */ |
| 360 | |
| 361 | static void |
| 362 | store_fpregs (void) |
| 363 | { |
| 364 | int ret, regno, tid; |
| 365 | FPA11 fp; |
| 366 | |
| 367 | /* Get the thread id for the ptrace call. */ |
| 368 | tid = GET_THREAD_ID (inferior_ptid); |
| 369 | |
| 370 | /* Read the floating point state. */ |
| 371 | ret = ptrace (PT_GETFPREGS, tid, 0, &fp); |
| 372 | if (ret < 0) |
| 373 | { |
| 374 | warning (_("Unable to fetch the floating point registers.")); |
| 375 | return; |
| 376 | } |
| 377 | |
| 378 | /* Store fpsr. */ |
| 379 | if (register_cached (ARM_FPS_REGNUM)) |
| 380 | regcache_raw_collect (current_regcache, ARM_FPS_REGNUM, (char *) &fp.fpsr); |
| 381 | |
| 382 | /* Store the floating point registers. */ |
| 383 | for (regno = ARM_F0_REGNUM; regno <= ARM_F7_REGNUM; regno++) |
| 384 | { |
| 385 | fetch_nwfpe_register (regno, &fp); |
| 386 | } |
| 387 | |
| 388 | ret = ptrace (PTRACE_SETFPREGS, tid, 0, &fp); |
| 389 | if (ret < 0) |
| 390 | { |
| 391 | warning (_("Unable to store floating point registers.")); |
| 392 | return; |
| 393 | } |
| 394 | } |
| 395 | |
| 396 | /* Fetch a general register of the process and store into |
| 397 | regcache. */ |
| 398 | |
| 399 | static void |
| 400 | fetch_register (int regno) |
| 401 | { |
| 402 | int ret, tid; |
| 403 | elf_gregset_t regs; |
| 404 | |
| 405 | /* Get the thread id for the ptrace call. */ |
| 406 | tid = GET_THREAD_ID (inferior_ptid); |
| 407 | |
| 408 | ret = ptrace (PTRACE_GETREGS, tid, 0, ®s); |
| 409 | if (ret < 0) |
| 410 | { |
| 411 | warning (_("Unable to fetch general register.")); |
| 412 | return; |
| 413 | } |
| 414 | |
| 415 | if (regno >= ARM_A1_REGNUM && regno < ARM_PC_REGNUM) |
| 416 | regcache_raw_supply (current_regcache, regno, (char *) ®s[regno]); |
| 417 | |
| 418 | if (ARM_PS_REGNUM == regno) |
| 419 | { |
| 420 | if (arm_apcs_32) |
| 421 | regcache_raw_supply (current_regcache, ARM_PS_REGNUM, |
| 422 | (char *) ®s[ARM_CPSR_REGNUM]); |
| 423 | else |
| 424 | regcache_raw_supply (current_regcache, ARM_PS_REGNUM, |
| 425 | (char *) ®s[ARM_PC_REGNUM]); |
| 426 | } |
| 427 | |
| 428 | if (ARM_PC_REGNUM == regno) |
| 429 | { |
| 430 | regs[ARM_PC_REGNUM] = ADDR_BITS_REMOVE (regs[ARM_PC_REGNUM]); |
| 431 | regcache_raw_supply (current_regcache, ARM_PC_REGNUM, |
| 432 | (char *) ®s[ARM_PC_REGNUM]); |
| 433 | } |
| 434 | } |
| 435 | |
| 436 | /* Fetch all general registers of the process and store into |
| 437 | regcache. */ |
| 438 | |
| 439 | static void |
| 440 | fetch_regs (void) |
| 441 | { |
| 442 | int ret, regno, tid; |
| 443 | elf_gregset_t regs; |
| 444 | |
| 445 | /* Get the thread id for the ptrace call. */ |
| 446 | tid = GET_THREAD_ID (inferior_ptid); |
| 447 | |
| 448 | ret = ptrace (PTRACE_GETREGS, tid, 0, ®s); |
| 449 | if (ret < 0) |
| 450 | { |
| 451 | warning (_("Unable to fetch general registers.")); |
| 452 | return; |
| 453 | } |
| 454 | |
| 455 | for (regno = ARM_A1_REGNUM; regno < ARM_PC_REGNUM; regno++) |
| 456 | regcache_raw_supply (current_regcache, regno, (char *) ®s[regno]); |
| 457 | |
| 458 | if (arm_apcs_32) |
| 459 | regcache_raw_supply (current_regcache, ARM_PS_REGNUM, |
| 460 | (char *) ®s[ARM_CPSR_REGNUM]); |
| 461 | else |
| 462 | regcache_raw_supply (current_regcache, ARM_PS_REGNUM, |
| 463 | (char *) ®s[ARM_PC_REGNUM]); |
| 464 | |
| 465 | regs[ARM_PC_REGNUM] = ADDR_BITS_REMOVE (regs[ARM_PC_REGNUM]); |
| 466 | regcache_raw_supply (current_regcache, ARM_PC_REGNUM, |
| 467 | (char *) ®s[ARM_PC_REGNUM]); |
| 468 | } |
| 469 | |
| 470 | /* Store all general registers of the process from the values in |
| 471 | regcache. */ |
| 472 | |
| 473 | static void |
| 474 | store_register (int regno) |
| 475 | { |
| 476 | int ret, tid; |
| 477 | elf_gregset_t regs; |
| 478 | |
| 479 | if (!register_cached (regno)) |
| 480 | return; |
| 481 | |
| 482 | /* Get the thread id for the ptrace call. */ |
| 483 | tid = GET_THREAD_ID (inferior_ptid); |
| 484 | |
| 485 | /* Get the general registers from the process. */ |
| 486 | ret = ptrace (PTRACE_GETREGS, tid, 0, ®s); |
| 487 | if (ret < 0) |
| 488 | { |
| 489 | warning (_("Unable to fetch general registers.")); |
| 490 | return; |
| 491 | } |
| 492 | |
| 493 | if (regno >= ARM_A1_REGNUM && regno <= ARM_PC_REGNUM) |
| 494 | regcache_raw_collect (current_regcache, regno, (char *) ®s[regno]); |
| 495 | else if (arm_apcs_32 && regno == ARM_PS_REGNUM) |
| 496 | regcache_raw_collect (current_regcache, regno, |
| 497 | (char *) ®s[ARM_CPSR_REGNUM]); |
| 498 | else if (!arm_apcs_32 && regno == ARM_PS_REGNUM) |
| 499 | regcache_raw_collect (current_regcache, ARM_PC_REGNUM, |
| 500 | (char *) ®s[ARM_PC_REGNUM]); |
| 501 | |
| 502 | ret = ptrace (PTRACE_SETREGS, tid, 0, ®s); |
| 503 | if (ret < 0) |
| 504 | { |
| 505 | warning (_("Unable to store general register.")); |
| 506 | return; |
| 507 | } |
| 508 | } |
| 509 | |
| 510 | static void |
| 511 | store_regs (void) |
| 512 | { |
| 513 | int ret, regno, tid; |
| 514 | elf_gregset_t regs; |
| 515 | |
| 516 | /* Get the thread id for the ptrace call. */ |
| 517 | tid = GET_THREAD_ID (inferior_ptid); |
| 518 | |
| 519 | /* Fetch the general registers. */ |
| 520 | ret = ptrace (PTRACE_GETREGS, tid, 0, ®s); |
| 521 | if (ret < 0) |
| 522 | { |
| 523 | warning (_("Unable to fetch general registers.")); |
| 524 | return; |
| 525 | } |
| 526 | |
| 527 | for (regno = ARM_A1_REGNUM; regno <= ARM_PC_REGNUM; regno++) |
| 528 | { |
| 529 | if (register_cached (regno)) |
| 530 | regcache_raw_collect (current_regcache, regno, (char *) ®s[regno]); |
| 531 | } |
| 532 | |
| 533 | if (arm_apcs_32 && register_cached (ARM_PS_REGNUM)) |
| 534 | regcache_raw_collect (current_regcache, ARM_PS_REGNUM, |
| 535 | (char *) ®s[ARM_CPSR_REGNUM]); |
| 536 | |
| 537 | ret = ptrace (PTRACE_SETREGS, tid, 0, ®s); |
| 538 | |
| 539 | if (ret < 0) |
| 540 | { |
| 541 | warning (_("Unable to store general registers.")); |
| 542 | return; |
| 543 | } |
| 544 | } |
| 545 | |
| 546 | /* Fetch registers from the child process. Fetch all registers if |
| 547 | regno == -1, otherwise fetch all general registers or all floating |
| 548 | point registers depending upon the value of regno. */ |
| 549 | |
| 550 | void |
| 551 | fetch_inferior_registers (int regno) |
| 552 | { |
| 553 | if (-1 == regno) |
| 554 | { |
| 555 | fetch_regs (); |
| 556 | fetch_fpregs (); |
| 557 | } |
| 558 | else |
| 559 | { |
| 560 | if (regno < ARM_F0_REGNUM || regno > ARM_FPS_REGNUM) |
| 561 | fetch_register (regno); |
| 562 | |
| 563 | if (regno >= ARM_F0_REGNUM && regno <= ARM_FPS_REGNUM) |
| 564 | fetch_fpregister (regno); |
| 565 | } |
| 566 | } |
| 567 | |
| 568 | /* Store registers back into the inferior. Store all registers if |
| 569 | regno == -1, otherwise store all general registers or all floating |
| 570 | point registers depending upon the value of regno. */ |
| 571 | |
| 572 | void |
| 573 | store_inferior_registers (int regno) |
| 574 | { |
| 575 | if (-1 == regno) |
| 576 | { |
| 577 | store_regs (); |
| 578 | store_fpregs (); |
| 579 | } |
| 580 | else |
| 581 | { |
| 582 | if ((regno < ARM_F0_REGNUM) || (regno > ARM_FPS_REGNUM)) |
| 583 | store_register (regno); |
| 584 | |
| 585 | if ((regno >= ARM_F0_REGNUM) && (regno <= ARM_FPS_REGNUM)) |
| 586 | store_fpregister (regno); |
| 587 | } |
| 588 | } |
| 589 | |
| 590 | /* Fill register regno (if it is a general-purpose register) in |
| 591 | *gregsetp with the appropriate value from GDB's register array. |
| 592 | If regno is -1, do this for all registers. */ |
| 593 | |
| 594 | void |
| 595 | fill_gregset (gdb_gregset_t *gregsetp, int regno) |
| 596 | { |
| 597 | if (-1 == regno) |
| 598 | { |
| 599 | int regnum; |
| 600 | for (regnum = ARM_A1_REGNUM; regnum <= ARM_PC_REGNUM; regnum++) |
| 601 | regcache_raw_collect (current_regcache, regnum, |
| 602 | (char *) &(*gregsetp)[regnum]); |
| 603 | } |
| 604 | else if (regno >= ARM_A1_REGNUM && regno <= ARM_PC_REGNUM) |
| 605 | regcache_raw_collect (current_regcache, regno, |
| 606 | (char *) &(*gregsetp)[regno]); |
| 607 | |
| 608 | if (ARM_PS_REGNUM == regno || -1 == regno) |
| 609 | { |
| 610 | if (arm_apcs_32) |
| 611 | regcache_raw_collect (current_regcache, ARM_PS_REGNUM, |
| 612 | (char *) &(*gregsetp)[ARM_CPSR_REGNUM]); |
| 613 | else |
| 614 | regcache_raw_collect (current_regcache, ARM_PC_REGNUM, |
| 615 | (char *) &(*gregsetp)[ARM_PC_REGNUM]); |
| 616 | } |
| 617 | } |
| 618 | |
| 619 | /* Fill GDB's register array with the general-purpose register values |
| 620 | in *gregsetp. */ |
| 621 | |
| 622 | void |
| 623 | supply_gregset (gdb_gregset_t *gregsetp) |
| 624 | { |
| 625 | int regno, reg_pc; |
| 626 | |
| 627 | for (regno = ARM_A1_REGNUM; regno < ARM_PC_REGNUM; regno++) |
| 628 | regcache_raw_supply (current_regcache, regno, |
| 629 | (char *) &(*gregsetp)[regno]); |
| 630 | |
| 631 | if (arm_apcs_32) |
| 632 | regcache_raw_supply (current_regcache, ARM_PS_REGNUM, |
| 633 | (char *) &(*gregsetp)[ARM_CPSR_REGNUM]); |
| 634 | else |
| 635 | regcache_raw_supply (current_regcache, ARM_PS_REGNUM, |
| 636 | (char *) &(*gregsetp)[ARM_PC_REGNUM]); |
| 637 | |
| 638 | reg_pc = ADDR_BITS_REMOVE ((CORE_ADDR)(*gregsetp)[ARM_PC_REGNUM]); |
| 639 | regcache_raw_supply (current_regcache, ARM_PC_REGNUM, (char *) ®_pc); |
| 640 | } |
| 641 | |
| 642 | /* Fill register regno (if it is a floating-point register) in |
| 643 | *fpregsetp with the appropriate value from GDB's register array. |
| 644 | If regno is -1, do this for all registers. */ |
| 645 | |
| 646 | void |
| 647 | fill_fpregset (gdb_fpregset_t *fpregsetp, int regno) |
| 648 | { |
| 649 | FPA11 *fp = (FPA11 *) fpregsetp; |
| 650 | |
| 651 | if (-1 == regno) |
| 652 | { |
| 653 | int regnum; |
| 654 | for (regnum = ARM_F0_REGNUM; regnum <= ARM_F7_REGNUM; regnum++) |
| 655 | store_nwfpe_register (regnum, fp); |
| 656 | } |
| 657 | else if (regno >= ARM_F0_REGNUM && regno <= ARM_F7_REGNUM) |
| 658 | { |
| 659 | store_nwfpe_register (regno, fp); |
| 660 | return; |
| 661 | } |
| 662 | |
| 663 | /* Store fpsr. */ |
| 664 | if (ARM_FPS_REGNUM == regno || -1 == regno) |
| 665 | regcache_raw_collect (current_regcache, ARM_FPS_REGNUM, |
| 666 | (char *) &fp->fpsr); |
| 667 | } |
| 668 | |
| 669 | /* Fill GDB's register array with the floating-point register values |
| 670 | in *fpregsetp. */ |
| 671 | |
| 672 | void |
| 673 | supply_fpregset (gdb_fpregset_t *fpregsetp) |
| 674 | { |
| 675 | int regno; |
| 676 | FPA11 *fp = (FPA11 *) fpregsetp; |
| 677 | |
| 678 | /* Fetch fpsr. */ |
| 679 | regcache_raw_supply (current_regcache, ARM_FPS_REGNUM, (char *) &fp->fpsr); |
| 680 | |
| 681 | /* Fetch the floating point registers. */ |
| 682 | for (regno = ARM_F0_REGNUM; regno <= ARM_F7_REGNUM; regno++) |
| 683 | { |
| 684 | fetch_nwfpe_register (regno, fp); |
| 685 | } |
| 686 | } |
| 687 | |
| 688 | int |
| 689 | arm_linux_kernel_u_size (void) |
| 690 | { |
| 691 | return (sizeof (struct user)); |
| 692 | } |
| 693 | |
| 694 | static unsigned int |
| 695 | get_linux_version (unsigned int *vmajor, |
| 696 | unsigned int *vminor, |
| 697 | unsigned int *vrelease) |
| 698 | { |
| 699 | struct utsname info; |
| 700 | char *pmajor, *pminor, *prelease, *tail; |
| 701 | |
| 702 | if (-1 == uname (&info)) |
| 703 | { |
| 704 | warning (_("Unable to determine GNU/Linux version.")); |
| 705 | return -1; |
| 706 | } |
| 707 | |
| 708 | pmajor = strtok (info.release, "."); |
| 709 | pminor = strtok (NULL, "."); |
| 710 | prelease = strtok (NULL, "."); |
| 711 | |
| 712 | *vmajor = (unsigned int) strtoul (pmajor, &tail, 0); |
| 713 | *vminor = (unsigned int) strtoul (pminor, &tail, 0); |
| 714 | *vrelease = (unsigned int) strtoul (prelease, &tail, 0); |
| 715 | |
| 716 | return ((*vmajor << 16) | (*vminor << 8) | *vrelease); |
| 717 | } |
| 718 | |
| 719 | void |
| 720 | _initialize_arm_linux_nat (void) |
| 721 | { |
| 722 | os_version = get_linux_version (&os_major, &os_minor, &os_release); |
| 723 | } |