| 1 | /* GNU/Linux on ARM native support. |
| 2 | Copyright 1999, 2000 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 | |
| 26 | #include <sys/user.h> |
| 27 | #include <sys/ptrace.h> |
| 28 | #include <sys/utsname.h> |
| 29 | #include <sys/procfs.h> |
| 30 | |
| 31 | /* Prototypes for supply_gregset etc. */ |
| 32 | #include "gregset.h" |
| 33 | |
| 34 | extern int arm_apcs_32; |
| 35 | |
| 36 | #define typeNone 0x00 |
| 37 | #define typeSingle 0x01 |
| 38 | #define typeDouble 0x02 |
| 39 | #define typeExtended 0x03 |
| 40 | #define FPWORDS 28 |
| 41 | #define CPSR_REGNUM 16 |
| 42 | |
| 43 | typedef union tagFPREG |
| 44 | { |
| 45 | unsigned int fSingle; |
| 46 | unsigned int fDouble[2]; |
| 47 | unsigned int fExtended[3]; |
| 48 | } |
| 49 | FPREG; |
| 50 | |
| 51 | typedef struct tagFPA11 |
| 52 | { |
| 53 | FPREG fpreg[8]; /* 8 floating point registers */ |
| 54 | unsigned int fpsr; /* floating point status register */ |
| 55 | unsigned int fpcr; /* floating point control register */ |
| 56 | unsigned char fType[8]; /* type of floating point value held in |
| 57 | floating point registers. */ |
| 58 | int initflag; /* NWFPE initialization flag. */ |
| 59 | } |
| 60 | FPA11; |
| 61 | |
| 62 | /* The following variables are used to determine the version of the |
| 63 | underlying Linux operating system. Examples: |
| 64 | |
| 65 | Linux 2.0.35 Linux 2.2.12 |
| 66 | os_version = 0x00020023 os_version = 0x0002020c |
| 67 | os_major = 2 os_major = 2 |
| 68 | os_minor = 0 os_minor = 2 |
| 69 | os_release = 35 os_release = 12 |
| 70 | |
| 71 | Note: os_version = (os_major << 16) | (os_minor << 8) | os_release |
| 72 | |
| 73 | These are initialized using get_linux_version() from |
| 74 | _initialize_arm_linux_nat(). */ |
| 75 | |
| 76 | static unsigned int os_version, os_major, os_minor, os_release; |
| 77 | |
| 78 | /* On Linux, threads are implemented as pseudo-processes, in which |
| 79 | case we may be tracing more than one process at a time. In that |
| 80 | case, inferior_pid will contain the main process ID and the |
| 81 | individual thread (process) ID mashed together. These macros are |
| 82 | used to separate them out. These definitions should be overridden |
| 83 | if thread support is included. */ |
| 84 | |
| 85 | #if !defined (PIDGET) /* Default definition for PIDGET/TIDGET. */ |
| 86 | #define PIDGET(PID) PID |
| 87 | #define TIDGET(PID) 0 |
| 88 | #endif |
| 89 | |
| 90 | int |
| 91 | get_thread_id (int inferior_pid) |
| 92 | { |
| 93 | int tid = TIDGET (inferior_pid); |
| 94 | if (0 == tid) tid = inferior_pid; |
| 95 | return tid; |
| 96 | } |
| 97 | #define GET_THREAD_ID(PID) get_thread_id ((PID)); |
| 98 | |
| 99 | static void |
| 100 | fetch_nwfpe_single (unsigned int fn, FPA11 * fpa11) |
| 101 | { |
| 102 | unsigned int mem[3]; |
| 103 | |
| 104 | mem[0] = fpa11->fpreg[fn].fSingle; |
| 105 | mem[1] = 0; |
| 106 | mem[2] = 0; |
| 107 | supply_register (F0_REGNUM + fn, (char *) &mem[0]); |
| 108 | } |
| 109 | |
| 110 | static void |
| 111 | fetch_nwfpe_double (unsigned int fn, FPA11 * fpa11) |
| 112 | { |
| 113 | unsigned int mem[3]; |
| 114 | |
| 115 | mem[0] = fpa11->fpreg[fn].fDouble[1]; |
| 116 | mem[1] = fpa11->fpreg[fn].fDouble[0]; |
| 117 | mem[2] = 0; |
| 118 | supply_register (F0_REGNUM + fn, (char *) &mem[0]); |
| 119 | } |
| 120 | |
| 121 | static void |
| 122 | fetch_nwfpe_none (unsigned int fn) |
| 123 | { |
| 124 | unsigned int mem[3] = |
| 125 | {0, 0, 0}; |
| 126 | |
| 127 | supply_register (F0_REGNUM + fn, (char *) &mem[0]); |
| 128 | } |
| 129 | |
| 130 | static void |
| 131 | fetch_nwfpe_extended (unsigned int fn, FPA11 * fpa11) |
| 132 | { |
| 133 | unsigned int mem[3]; |
| 134 | |
| 135 | mem[0] = fpa11->fpreg[fn].fExtended[0]; /* sign & exponent */ |
| 136 | mem[1] = fpa11->fpreg[fn].fExtended[2]; /* ls bits */ |
| 137 | mem[2] = fpa11->fpreg[fn].fExtended[1]; /* ms bits */ |
| 138 | supply_register (F0_REGNUM + fn, (char *) &mem[0]); |
| 139 | } |
| 140 | |
| 141 | static void |
| 142 | fetch_nwfpe_register (int regno, FPA11 * fpa11) |
| 143 | { |
| 144 | int fn = regno - F0_REGNUM; |
| 145 | |
| 146 | switch (fpa11->fType[fn]) |
| 147 | { |
| 148 | case typeSingle: |
| 149 | fetch_nwfpe_single (fn, fpa11); |
| 150 | break; |
| 151 | |
| 152 | case typeDouble: |
| 153 | fetch_nwfpe_double (fn, fpa11); |
| 154 | break; |
| 155 | |
| 156 | case typeExtended: |
| 157 | fetch_nwfpe_extended (fn, fpa11); |
| 158 | break; |
| 159 | |
| 160 | default: |
| 161 | fetch_nwfpe_none (fn); |
| 162 | } |
| 163 | } |
| 164 | |
| 165 | static void |
| 166 | store_nwfpe_single (unsigned int fn, FPA11 * fpa11) |
| 167 | { |
| 168 | unsigned int mem[3]; |
| 169 | |
| 170 | read_register_gen (F0_REGNUM + fn, (char *) &mem[0]); |
| 171 | fpa11->fpreg[fn].fSingle = mem[0]; |
| 172 | fpa11->fType[fn] = typeSingle; |
| 173 | } |
| 174 | |
| 175 | static void |
| 176 | store_nwfpe_double (unsigned int fn, FPA11 * fpa11) |
| 177 | { |
| 178 | unsigned int mem[3]; |
| 179 | |
| 180 | read_register_gen (F0_REGNUM + fn, (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 | read_register_gen (F0_REGNUM + fn, (char *) &mem[0]); |
| 192 | fpa11->fpreg[fn].fExtended[0] = mem[0]; /* sign & exponent */ |
| 193 | fpa11->fpreg[fn].fExtended[2] = mem[1]; /* ls bits */ |
| 194 | fpa11->fpreg[fn].fExtended[1] = mem[2]; /* ms bits */ |
| 195 | fpa11->fType[fn] = typeDouble; |
| 196 | } |
| 197 | |
| 198 | void |
| 199 | store_nwfpe_register (int regno, FPA11 * fpa11) |
| 200 | { |
| 201 | if (register_valid[regno]) |
| 202 | { |
| 203 | unsigned int fn = regno - F0_REGNUM; |
| 204 | switch (fpa11->fType[fn]) |
| 205 | { |
| 206 | case typeSingle: |
| 207 | store_nwfpe_single (fn, fpa11); |
| 208 | break; |
| 209 | |
| 210 | case typeDouble: |
| 211 | store_nwfpe_double (fn, fpa11); |
| 212 | break; |
| 213 | |
| 214 | case typeExtended: |
| 215 | store_nwfpe_extended (fn, fpa11); |
| 216 | break; |
| 217 | } |
| 218 | } |
| 219 | } |
| 220 | |
| 221 | |
| 222 | /* Get the value of a particular register from the floating point |
| 223 | state of the process and store it into registers[]. */ |
| 224 | |
| 225 | static void |
| 226 | fetch_fpregister (int regno) |
| 227 | { |
| 228 | int ret, tid; |
| 229 | FPA11 fp; |
| 230 | |
| 231 | /* Get the thread id for the ptrace call. */ |
| 232 | tid = GET_THREAD_ID (inferior_pid); |
| 233 | |
| 234 | /* Read the floating point state. */ |
| 235 | ret = ptrace (PT_GETFPREGS, tid, 0, &fp); |
| 236 | if (ret < 0) |
| 237 | { |
| 238 | warning ("Unable to fetch floating point register."); |
| 239 | return; |
| 240 | } |
| 241 | |
| 242 | /* Fetch fpsr. */ |
| 243 | if (FPS_REGNUM == regno) |
| 244 | supply_register (FPS_REGNUM, (char *) &fp.fpsr); |
| 245 | |
| 246 | /* Fetch the floating point register. */ |
| 247 | if (regno >= F0_REGNUM && regno <= F7_REGNUM) |
| 248 | { |
| 249 | int fn = regno - F0_REGNUM; |
| 250 | |
| 251 | switch (fp.fType[fn]) |
| 252 | { |
| 253 | case typeSingle: |
| 254 | fetch_nwfpe_single (fn, &fp); |
| 255 | break; |
| 256 | |
| 257 | case typeDouble: |
| 258 | fetch_nwfpe_double (fn, &fp); |
| 259 | break; |
| 260 | |
| 261 | case typeExtended: |
| 262 | fetch_nwfpe_extended (fn, &fp); |
| 263 | break; |
| 264 | |
| 265 | default: |
| 266 | fetch_nwfpe_none (fn); |
| 267 | } |
| 268 | } |
| 269 | } |
| 270 | |
| 271 | /* Get the whole floating point state of the process and store it |
| 272 | into registers[]. */ |
| 273 | |
| 274 | static void |
| 275 | fetch_fpregs (void) |
| 276 | { |
| 277 | int ret, regno, tid; |
| 278 | FPA11 fp; |
| 279 | |
| 280 | /* Get the thread id for the ptrace call. */ |
| 281 | tid = GET_THREAD_ID (inferior_pid); |
| 282 | |
| 283 | /* Read the floating point state. */ |
| 284 | ret = ptrace (PT_GETFPREGS, tid, 0, &fp); |
| 285 | if (ret < 0) |
| 286 | { |
| 287 | warning ("Unable to fetch the floating point registers."); |
| 288 | return; |
| 289 | } |
| 290 | |
| 291 | /* Fetch fpsr. */ |
| 292 | supply_register (FPS_REGNUM, (char *) &fp.fpsr); |
| 293 | |
| 294 | /* Fetch the floating point registers. */ |
| 295 | for (regno = F0_REGNUM; regno <= F7_REGNUM; regno++) |
| 296 | { |
| 297 | int fn = regno - F0_REGNUM; |
| 298 | |
| 299 | switch (fp.fType[fn]) |
| 300 | { |
| 301 | case typeSingle: |
| 302 | fetch_nwfpe_single (fn, &fp); |
| 303 | break; |
| 304 | |
| 305 | case typeDouble: |
| 306 | fetch_nwfpe_double (fn, &fp); |
| 307 | break; |
| 308 | |
| 309 | case typeExtended: |
| 310 | fetch_nwfpe_extended (fn, &fp); |
| 311 | break; |
| 312 | |
| 313 | default: |
| 314 | fetch_nwfpe_none (fn); |
| 315 | } |
| 316 | } |
| 317 | } |
| 318 | |
| 319 | /* Save a particular register into the floating point state of the |
| 320 | process using the contents from registers[]. */ |
| 321 | |
| 322 | static void |
| 323 | store_fpregister (int regno) |
| 324 | { |
| 325 | int ret, tid; |
| 326 | FPA11 fp; |
| 327 | |
| 328 | /* Get the thread id for the ptrace call. */ |
| 329 | tid = GET_THREAD_ID (inferior_pid); |
| 330 | |
| 331 | /* Read the floating point state. */ |
| 332 | ret = ptrace (PT_GETFPREGS, tid, 0, &fp); |
| 333 | if (ret < 0) |
| 334 | { |
| 335 | warning ("Unable to fetch the floating point registers."); |
| 336 | return; |
| 337 | } |
| 338 | |
| 339 | /* Store fpsr. */ |
| 340 | if (FPS_REGNUM == regno && register_valid[FPS_REGNUM]) |
| 341 | read_register_gen (FPS_REGNUM, (char *) &fp.fpsr); |
| 342 | |
| 343 | /* Store the floating point register. */ |
| 344 | if (regno >= F0_REGNUM && regno <= F7_REGNUM) |
| 345 | { |
| 346 | store_nwfpe_register (regno, &fp); |
| 347 | } |
| 348 | |
| 349 | ret = ptrace (PTRACE_SETFPREGS, tid, 0, &fp); |
| 350 | if (ret < 0) |
| 351 | { |
| 352 | warning ("Unable to store floating point register."); |
| 353 | return; |
| 354 | } |
| 355 | } |
| 356 | |
| 357 | /* Save the whole floating point state of the process using |
| 358 | the contents from registers[]. */ |
| 359 | |
| 360 | static void |
| 361 | store_fpregs (void) |
| 362 | { |
| 363 | int ret, regno, tid; |
| 364 | FPA11 fp; |
| 365 | |
| 366 | /* Get the thread id for the ptrace call. */ |
| 367 | tid = GET_THREAD_ID (inferior_pid); |
| 368 | |
| 369 | /* Read the floating point state. */ |
| 370 | ret = ptrace (PT_GETFPREGS, tid, 0, &fp); |
| 371 | if (ret < 0) |
| 372 | { |
| 373 | warning ("Unable to fetch the floating point registers."); |
| 374 | return; |
| 375 | } |
| 376 | |
| 377 | /* Store fpsr. */ |
| 378 | if (register_valid[FPS_REGNUM]) |
| 379 | read_register_gen (FPS_REGNUM, (char *) &fp.fpsr); |
| 380 | |
| 381 | /* Store the floating point registers. */ |
| 382 | for (regno = F0_REGNUM; regno <= F7_REGNUM; regno++) |
| 383 | { |
| 384 | fetch_nwfpe_register (regno, &fp); |
| 385 | } |
| 386 | |
| 387 | ret = ptrace (PTRACE_SETFPREGS, tid, 0, &fp); |
| 388 | if (ret < 0) |
| 389 | { |
| 390 | warning ("Unable to store floating point registers."); |
| 391 | return; |
| 392 | } |
| 393 | } |
| 394 | |
| 395 | /* Fetch a general register of the process and store into |
| 396 | registers[]. */ |
| 397 | |
| 398 | static void |
| 399 | fetch_register (int regno) |
| 400 | { |
| 401 | int ret, tid; |
| 402 | struct pt_regs regs; |
| 403 | |
| 404 | /* Get the thread id for the ptrace call. */ |
| 405 | tid = GET_THREAD_ID (inferior_pid); |
| 406 | |
| 407 | ret = ptrace (PTRACE_GETREGS, tid, 0, ®s); |
| 408 | if (ret < 0) |
| 409 | { |
| 410 | warning ("Unable to fetch general register."); |
| 411 | return; |
| 412 | } |
| 413 | |
| 414 | if (regno >= A1_REGNUM && regno < PC_REGNUM) |
| 415 | supply_register (regno, (char *) ®s.uregs[regno]); |
| 416 | |
| 417 | if (PS_REGNUM == regno) |
| 418 | { |
| 419 | if (arm_apcs_32) |
| 420 | supply_register (PS_REGNUM, (char *) ®s.uregs[CPSR_REGNUM]); |
| 421 | else |
| 422 | supply_register (PS_REGNUM, (char *) ®s.uregs[PC_REGNUM]); |
| 423 | } |
| 424 | |
| 425 | if (PC_REGNUM == regno) |
| 426 | { |
| 427 | regs.uregs[PC_REGNUM] = ADDR_BITS_REMOVE (regs.uregs[PC_REGNUM]); |
| 428 | supply_register (PC_REGNUM, (char *) ®s.uregs[PC_REGNUM]); |
| 429 | } |
| 430 | } |
| 431 | |
| 432 | /* Fetch all general registers of the process and store into |
| 433 | registers[]. */ |
| 434 | |
| 435 | static void |
| 436 | fetch_regs (void) |
| 437 | { |
| 438 | int ret, regno, tid; |
| 439 | struct pt_regs regs; |
| 440 | |
| 441 | /* Get the thread id for the ptrace call. */ |
| 442 | tid = GET_THREAD_ID (inferior_pid); |
| 443 | |
| 444 | ret = ptrace (PTRACE_GETREGS, tid, 0, ®s); |
| 445 | if (ret < 0) |
| 446 | { |
| 447 | warning ("Unable to fetch general registers."); |
| 448 | return; |
| 449 | } |
| 450 | |
| 451 | for (regno = A1_REGNUM; regno < PC_REGNUM; regno++) |
| 452 | supply_register (regno, (char *) ®s.uregs[regno]); |
| 453 | |
| 454 | if (arm_apcs_32) |
| 455 | supply_register (PS_REGNUM, (char *) ®s.uregs[CPSR_REGNUM]); |
| 456 | else |
| 457 | supply_register (PS_REGNUM, (char *) ®s.uregs[PC_REGNUM]); |
| 458 | |
| 459 | regs.uregs[PC_REGNUM] = ADDR_BITS_REMOVE (regs.uregs[PC_REGNUM]); |
| 460 | supply_register (PC_REGNUM, (char *) ®s.uregs[PC_REGNUM]); |
| 461 | } |
| 462 | |
| 463 | /* Store all general registers of the process from the values in |
| 464 | registers[]. */ |
| 465 | |
| 466 | static void |
| 467 | store_register (int regno) |
| 468 | { |
| 469 | int ret, tid; |
| 470 | struct pt_regs regs; |
| 471 | |
| 472 | if (!register_valid[regno]) |
| 473 | return; |
| 474 | |
| 475 | /* Get the thread id for the ptrace call. */ |
| 476 | tid = GET_THREAD_ID (inferior_pid); |
| 477 | |
| 478 | /* Get the general registers from the process. */ |
| 479 | ret = ptrace (PTRACE_GETREGS, tid, 0, ®s); |
| 480 | if (ret < 0) |
| 481 | { |
| 482 | warning ("Unable to fetch general registers."); |
| 483 | return; |
| 484 | } |
| 485 | |
| 486 | if (regno >= A1_REGNUM && regno <= PC_REGNUM) |
| 487 | read_register_gen (regno, (char *) ®s.uregs[regno]); |
| 488 | |
| 489 | ret = ptrace (PTRACE_SETREGS, tid, 0, ®s); |
| 490 | if (ret < 0) |
| 491 | { |
| 492 | warning ("Unable to store general register."); |
| 493 | return; |
| 494 | } |
| 495 | } |
| 496 | |
| 497 | static void |
| 498 | store_regs (void) |
| 499 | { |
| 500 | int ret, regno, tid; |
| 501 | struct pt_regs regs; |
| 502 | |
| 503 | /* Get the thread id for the ptrace call. */ |
| 504 | tid = GET_THREAD_ID (inferior_pid); |
| 505 | |
| 506 | /* Fetch the general registers. */ |
| 507 | ret = ptrace (PTRACE_GETREGS, tid, 0, ®s); |
| 508 | if (ret < 0) |
| 509 | { |
| 510 | warning ("Unable to fetch general registers."); |
| 511 | return; |
| 512 | } |
| 513 | |
| 514 | for (regno = A1_REGNUM; regno <= PC_REGNUM; regno++) |
| 515 | { |
| 516 | if (register_valid[regno]) |
| 517 | read_register_gen (regno, (char *) ®s.uregs[regno]); |
| 518 | } |
| 519 | |
| 520 | ret = ptrace (PTRACE_SETREGS, tid, 0, ®s); |
| 521 | |
| 522 | if (ret < 0) |
| 523 | { |
| 524 | warning ("Unable to store general registers."); |
| 525 | return; |
| 526 | } |
| 527 | } |
| 528 | |
| 529 | /* Fetch registers from the child process. Fetch all registers if |
| 530 | regno == -1, otherwise fetch all general registers or all floating |
| 531 | point registers depending upon the value of regno. */ |
| 532 | |
| 533 | void |
| 534 | fetch_inferior_registers (int regno) |
| 535 | { |
| 536 | if (-1 == regno) |
| 537 | { |
| 538 | fetch_regs (); |
| 539 | fetch_fpregs (); |
| 540 | } |
| 541 | else |
| 542 | { |
| 543 | if (regno < F0_REGNUM || regno > FPS_REGNUM) |
| 544 | fetch_register (regno); |
| 545 | |
| 546 | if (regno >= F0_REGNUM && regno <= FPS_REGNUM) |
| 547 | fetch_fpregister (regno); |
| 548 | } |
| 549 | } |
| 550 | |
| 551 | /* Store registers back into the inferior. Store all registers if |
| 552 | regno == -1, otherwise store all general registers or all floating |
| 553 | point registers depending upon the value of regno. */ |
| 554 | |
| 555 | void |
| 556 | store_inferior_registers (int regno) |
| 557 | { |
| 558 | if (-1 == regno) |
| 559 | { |
| 560 | store_regs (); |
| 561 | store_fpregs (); |
| 562 | } |
| 563 | else |
| 564 | { |
| 565 | if ((regno < F0_REGNUM) || (regno > FPS_REGNUM)) |
| 566 | store_register (regno); |
| 567 | |
| 568 | if ((regno >= F0_REGNUM) && (regno <= FPS_REGNUM)) |
| 569 | store_fpregister (regno); |
| 570 | } |
| 571 | } |
| 572 | |
| 573 | /* Fill register regno (if it is a general-purpose register) in |
| 574 | *gregsetp with the appropriate value from GDB's register array. |
| 575 | If regno is -1, do this for all registers. */ |
| 576 | |
| 577 | void |
| 578 | fill_gregset (gregset_t *gregsetp, int regno) |
| 579 | { |
| 580 | if (-1 == regno) |
| 581 | { |
| 582 | int regnum; |
| 583 | for (regnum = A1_REGNUM; regnum <= PC_REGNUM; regnum++) |
| 584 | if (register_valid[regnum]) |
| 585 | read_register_gen (regnum, (char *) &(*gregsetp)[regnum]); |
| 586 | } |
| 587 | else if (regno >= A1_REGNUM && regno <= PC_REGNUM) |
| 588 | { |
| 589 | if (register_valid[regno]) |
| 590 | read_register_gen (regno, (char *) &(*gregsetp)[regno]); |
| 591 | } |
| 592 | |
| 593 | if (PS_REGNUM == regno || -1 == regno) |
| 594 | { |
| 595 | if (register_valid[regno] || -1 == regno) |
| 596 | { |
| 597 | if (arm_apcs_32) |
| 598 | read_register_gen (PS_REGNUM, (char *) &(*gregsetp)[CPSR_REGNUM]); |
| 599 | else |
| 600 | read_register_gen (PC_REGNUM, (char *) &(*gregsetp)[PC_REGNUM]); |
| 601 | } |
| 602 | } |
| 603 | |
| 604 | } |
| 605 | |
| 606 | /* Fill GDB's register array with the general-purpose register values |
| 607 | in *gregsetp. */ |
| 608 | |
| 609 | void |
| 610 | supply_gregset (gregset_t *gregsetp) |
| 611 | { |
| 612 | int regno, reg_pc; |
| 613 | |
| 614 | for (regno = A1_REGNUM; regno < PC_REGNUM; regno++) |
| 615 | supply_register (regno, (char *) &(*gregsetp)[regno]); |
| 616 | |
| 617 | if (arm_apcs_32) |
| 618 | supply_register (PS_REGNUM, (char *) &(*gregsetp)[CPSR_REGNUM]); |
| 619 | else |
| 620 | supply_register (PS_REGNUM, (char *) &(*gregsetp)[PC_REGNUM]); |
| 621 | |
| 622 | reg_pc = ADDR_BITS_REMOVE ((CORE_ADDR)(*gregsetp)[PC_REGNUM]); |
| 623 | supply_register (PC_REGNUM, (char *) ®_pc); |
| 624 | } |
| 625 | |
| 626 | /* Fill register regno (if it is a floating-point register) in |
| 627 | *fpregsetp with the appropriate value from GDB's register array. |
| 628 | If regno is -1, do this for all registers. */ |
| 629 | |
| 630 | void |
| 631 | fill_fpregset (fpregset_t *fpregsetp, int regno) |
| 632 | { |
| 633 | FPA11 *fp = (FPA11 *) fpregsetp; |
| 634 | |
| 635 | if (-1 == regno) |
| 636 | { |
| 637 | int regnum; |
| 638 | for (regnum = F0_REGNUM; regnum <= F7_REGNUM; regnum++) |
| 639 | store_nwfpe_register (regnum, fp); |
| 640 | } |
| 641 | else if (regno >= F0_REGNUM && regno <= F7_REGNUM) |
| 642 | { |
| 643 | store_nwfpe_register (regno, fp); |
| 644 | return; |
| 645 | } |
| 646 | |
| 647 | /* Store fpsr. */ |
| 648 | if (register_valid[FPS_REGNUM]) |
| 649 | if (FPS_REGNUM == regno || -1 == regno) |
| 650 | read_register_gen (FPS_REGNUM, (char *) &fp->fpsr); |
| 651 | } |
| 652 | |
| 653 | /* Fill GDB's register array with the floating-point register values |
| 654 | in *fpregsetp. */ |
| 655 | |
| 656 | void |
| 657 | supply_fpregset (fpregset_t *fpregsetp) |
| 658 | { |
| 659 | int regno; |
| 660 | FPA11 *fp = (FPA11 *) fpregsetp; |
| 661 | |
| 662 | /* Fetch fpsr. */ |
| 663 | supply_register (FPS_REGNUM, (char *) &fp->fpsr); |
| 664 | |
| 665 | /* Fetch the floating point registers. */ |
| 666 | for (regno = F0_REGNUM; regno <= F7_REGNUM; regno++) |
| 667 | { |
| 668 | fetch_nwfpe_register (regno, fp); |
| 669 | } |
| 670 | } |
| 671 | |
| 672 | int |
| 673 | arm_linux_kernel_u_size (void) |
| 674 | { |
| 675 | return (sizeof (struct user)); |
| 676 | } |
| 677 | |
| 678 | static unsigned int |
| 679 | get_linux_version (unsigned int *vmajor, |
| 680 | unsigned int *vminor, |
| 681 | unsigned int *vrelease) |
| 682 | { |
| 683 | struct utsname info; |
| 684 | char *pmajor, *pminor, *prelease, *tail; |
| 685 | |
| 686 | if (-1 == uname (&info)) |
| 687 | { |
| 688 | warning ("Unable to determine Linux version."); |
| 689 | return -1; |
| 690 | } |
| 691 | |
| 692 | pmajor = strtok (info.release, "."); |
| 693 | pminor = strtok (NULL, "."); |
| 694 | prelease = strtok (NULL, "."); |
| 695 | |
| 696 | *vmajor = (unsigned int) strtoul (pmajor, &tail, 0); |
| 697 | *vminor = (unsigned int) strtoul (pminor, &tail, 0); |
| 698 | *vrelease = (unsigned int) strtoul (prelease, &tail, 0); |
| 699 | |
| 700 | return ((*vmajor << 16) | (*vminor << 8) | *vrelease); |
| 701 | } |
| 702 | |
| 703 | void |
| 704 | _initialize_arm_linux_nat (void) |
| 705 | { |
| 706 | os_version = get_linux_version (&os_major, &os_minor, &os_release); |
| 707 | } |