| 1 | /* Native-dependent code for Linux/x86-64. |
| 2 | Copyright 2001 |
| 3 | Free Software Foundation, Inc. |
| 4 | Contributed by Jiri Smid, SuSE Labs. |
| 5 | |
| 6 | This file is part of GDB. |
| 7 | |
| 8 | This program is free software; you can redistribute it and/or modify |
| 9 | it under the terms of the GNU General Public License as published by |
| 10 | the Free Software Foundation; either version 2 of the License, or |
| 11 | (at your option) any later version. |
| 12 | |
| 13 | This program is distributed in the hope that it will be useful, |
| 14 | but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 15 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 16 | GNU General Public License for more details. |
| 17 | |
| 18 | You should have received a copy of the GNU General Public License |
| 19 | along with this program; if not, write to the Free Software |
| 20 | Foundation, Inc., 59 Temple Place - Suite 330, |
| 21 | Boston, MA 02111-1307, USA. */ |
| 22 | |
| 23 | #include "defs.h" |
| 24 | #include "inferior.h" |
| 25 | #include "gdbcore.h" |
| 26 | #include "regcache.h" |
| 27 | #include "i387-nat.h" |
| 28 | #include "gdb_assert.h" |
| 29 | #include "x86-64-tdep.h" |
| 30 | |
| 31 | #include <sys/ptrace.h> |
| 32 | #include <sys/debugreg.h> |
| 33 | #include <sys/syscall.h> |
| 34 | #include <sys/procfs.h> |
| 35 | |
| 36 | static unsigned long |
| 37 | x86_64_linux_dr_get (int regnum) |
| 38 | { |
| 39 | int tid; |
| 40 | unsigned long value; |
| 41 | |
| 42 | /* FIXME: kettenis/2001-01-29: It's not clear what we should do with |
| 43 | multi-threaded processes here. For now, pretend there is just |
| 44 | one thread. */ |
| 45 | tid = PIDGET (inferior_ptid); |
| 46 | |
| 47 | /* FIXME: kettenis/2001-03-27: Calling perror_with_name if the |
| 48 | ptrace call fails breaks debugging remote targets. The correct |
| 49 | way to fix this is to add the hardware breakpoint and watchpoint |
| 50 | stuff to the target vectore. For now, just return zero if the |
| 51 | ptrace call fails. */ |
| 52 | errno = 0; |
| 53 | value = ptrace (PT_READ_U, tid, |
| 54 | offsetof (struct user, u_debugreg[regnum]), 0); |
| 55 | if (errno != 0) |
| 56 | #if 0 |
| 57 | perror_with_name ("Couldn't read debug register"); |
| 58 | #else |
| 59 | return 0; |
| 60 | #endif |
| 61 | |
| 62 | return value; |
| 63 | } |
| 64 | |
| 65 | static void |
| 66 | x86_64_linux_dr_set (int regnum, unsigned long value) |
| 67 | { |
| 68 | int tid; |
| 69 | |
| 70 | /* FIXME: kettenis/2001-01-29: It's not clear what we should do with |
| 71 | multi-threaded processes here. For now, pretend there is just |
| 72 | one thread. */ |
| 73 | tid = PIDGET (inferior_ptid); |
| 74 | |
| 75 | errno = 0; |
| 76 | ptrace (PT_WRITE_U, tid, |
| 77 | offsetof (struct user, u_debugreg[regnum]), value); |
| 78 | if (errno != 0) |
| 79 | perror_with_name ("Couldn't write debug register"); |
| 80 | } |
| 81 | |
| 82 | void |
| 83 | x86_64_linux_dr_set_control (unsigned long control) |
| 84 | { |
| 85 | x86_64_linux_dr_set (DR_CONTROL, control); |
| 86 | } |
| 87 | |
| 88 | void |
| 89 | x86_64_linux_dr_set_addr (int regnum, CORE_ADDR addr) |
| 90 | { |
| 91 | gdb_assert (regnum >= 0 && regnum <= DR_LASTADDR - DR_FIRSTADDR); |
| 92 | |
| 93 | x86_64_linux_dr_set (DR_FIRSTADDR + regnum, addr); |
| 94 | } |
| 95 | |
| 96 | void |
| 97 | x86_64_linux_dr_reset_addr (int regnum) |
| 98 | { |
| 99 | gdb_assert (regnum >= 0 && regnum <= DR_LASTADDR - DR_FIRSTADDR); |
| 100 | |
| 101 | x86_64_linux_dr_set (DR_FIRSTADDR + regnum, 0L); |
| 102 | } |
| 103 | |
| 104 | unsigned long |
| 105 | x86_64_linux_dr_get_status (void) |
| 106 | { |
| 107 | return x86_64_linux_dr_get (DR_STATUS); |
| 108 | } |
| 109 | \f |
| 110 | |
| 111 | /* The register sets used in Linux ELF core-dumps are identical to the |
| 112 | register sets used by `ptrace'. */ |
| 113 | |
| 114 | #define GETREGS_SUPPLIES(regno) \ |
| 115 | (0 <= (regno) && (regno) <= 17) |
| 116 | #define GETFPREGS_SUPPLIES(regno) \ |
| 117 | (FP0_REGNUM <= (regno) && (regno) <= MXCSR_REGNUM) |
| 118 | |
| 119 | #define PTRACE_XFER_TYPE unsigned long |
| 120 | \f |
| 121 | |
| 122 | /* Transfering the general-purpose registers between GDB, inferiors |
| 123 | and core files. */ |
| 124 | |
| 125 | /* Fill GDB's register array with the general-purpose register values |
| 126 | in *GREGSETP. */ |
| 127 | |
| 128 | void |
| 129 | supply_gregset (elf_gregset_t * gregsetp) |
| 130 | { |
| 131 | elf_greg_t *regp = (elf_greg_t *) gregsetp; |
| 132 | int i; |
| 133 | |
| 134 | for (i = 0; i < X86_64_NUM_GREGS; i++) |
| 135 | supply_register (i, (char *) (regp + x86_64_regmap[i])); |
| 136 | } |
| 137 | |
| 138 | /* Fill register REGNO (if it is a general-purpose register) in |
| 139 | *GREGSETPS with the value in GDB's register array. If REGNO is -1, |
| 140 | do this for all registers. */ |
| 141 | |
| 142 | void |
| 143 | fill_gregset (elf_gregset_t * gregsetp, int regno) |
| 144 | { |
| 145 | elf_greg_t *regp = (elf_greg_t *) gregsetp; |
| 146 | int i; |
| 147 | |
| 148 | for (i = 0; i < X86_64_NUM_GREGS; i++) |
| 149 | if ((regno == -1 || regno == i)) |
| 150 | read_register_gen (i, regp + x86_64_regmap[i]); |
| 151 | } |
| 152 | |
| 153 | /* Fetch all general-purpose registers from process/thread TID and |
| 154 | store their values in GDB's register array. */ |
| 155 | |
| 156 | static void |
| 157 | fetch_regs (int tid) |
| 158 | { |
| 159 | elf_gregset_t regs; |
| 160 | |
| 161 | if (ptrace (PTRACE_GETREGS, tid, 0, (long) ®s) < 0) |
| 162 | perror_with_name ("Couldn't get registers"); |
| 163 | |
| 164 | supply_gregset (®s); |
| 165 | } |
| 166 | |
| 167 | /* Store all valid general-purpose registers in GDB's register array |
| 168 | into the process/thread specified by TID. */ |
| 169 | |
| 170 | static void |
| 171 | store_regs (int tid, int regno) |
| 172 | { |
| 173 | elf_gregset_t regs; |
| 174 | |
| 175 | if (ptrace (PTRACE_GETREGS, tid, 0, (long) ®s) < 0) |
| 176 | perror_with_name ("Couldn't get registers"); |
| 177 | |
| 178 | fill_gregset (®s, regno); |
| 179 | |
| 180 | if (ptrace (PTRACE_SETREGS, tid, 0, (long) ®s) < 0) |
| 181 | perror_with_name ("Couldn't write registers"); |
| 182 | } |
| 183 | \f |
| 184 | |
| 185 | /* Transfering floating-point registers between GDB, inferiors and cores. */ |
| 186 | |
| 187 | /* Fill GDB's register array with the floating-point register values in |
| 188 | *FPREGSETP. */ |
| 189 | |
| 190 | void |
| 191 | supply_fpregset (elf_fpregset_t * fpregsetp) |
| 192 | { |
| 193 | i387_supply_fxsave ((char *) fpregsetp); |
| 194 | } |
| 195 | |
| 196 | /* Fill register REGNO (if it is a floating-point register) in |
| 197 | *FPREGSETP with the value in GDB's register array. If REGNO is -1, |
| 198 | do this for all registers. */ |
| 199 | |
| 200 | void |
| 201 | fill_fpregset (elf_fpregset_t * fpregsetp, int regno) |
| 202 | { |
| 203 | i387_fill_fxsave ((char *) fpregsetp, regno); |
| 204 | } |
| 205 | |
| 206 | /* Fetch all floating-point registers from process/thread TID and store |
| 207 | thier values in GDB's register array. */ |
| 208 | |
| 209 | static void |
| 210 | fetch_fpregs (int tid) |
| 211 | { |
| 212 | elf_fpregset_t fpregs; |
| 213 | |
| 214 | if (ptrace (PTRACE_GETFPREGS, tid, 0, (long) &fpregs) < 0) |
| 215 | perror_with_name ("Couldn't get floating point status"); |
| 216 | |
| 217 | supply_fpregset (&fpregs); |
| 218 | } |
| 219 | |
| 220 | /* Store all valid floating-point registers in GDB's register array |
| 221 | into the process/thread specified by TID. */ |
| 222 | |
| 223 | static void |
| 224 | store_fpregs (int tid, int regno) |
| 225 | { |
| 226 | elf_fpregset_t fpregs; |
| 227 | |
| 228 | if (ptrace (PTRACE_GETFPREGS, tid, 0, (long) &fpregs) < 0) |
| 229 | perror_with_name ("Couldn't get floating point status"); |
| 230 | |
| 231 | fill_fpregset (&fpregs, regno); |
| 232 | |
| 233 | if (ptrace (PTRACE_SETFPREGS, tid, 0, (long) &fpregs) < 0) |
| 234 | perror_with_name ("Couldn't write floating point status"); |
| 235 | } |
| 236 | \f |
| 237 | |
| 238 | /* Transferring arbitrary registers between GDB and inferior. */ |
| 239 | |
| 240 | /* Fetch register REGNO from the child process. If REGNO is -1, do |
| 241 | this for all registers (including the floating point and SSE |
| 242 | registers). */ |
| 243 | |
| 244 | void |
| 245 | fetch_inferior_registers (int regno) |
| 246 | { |
| 247 | int tid; |
| 248 | |
| 249 | /* Linux LWP ID's are process ID's. */ |
| 250 | if ((tid = TIDGET (inferior_ptid)) == 0) |
| 251 | tid = PIDGET (inferior_ptid); /* Not a threaded program. */ |
| 252 | |
| 253 | if (regno == -1) |
| 254 | { |
| 255 | fetch_regs (tid); |
| 256 | fetch_fpregs (tid); |
| 257 | return; |
| 258 | } |
| 259 | |
| 260 | if (GETREGS_SUPPLIES (regno)) |
| 261 | { |
| 262 | fetch_regs (tid); |
| 263 | return; |
| 264 | } |
| 265 | |
| 266 | if (GETFPREGS_SUPPLIES (regno)) |
| 267 | { |
| 268 | fetch_fpregs (tid); |
| 269 | return; |
| 270 | } |
| 271 | |
| 272 | internal_error (__FILE__, __LINE__, |
| 273 | "Got request for bad register number %d.", regno); |
| 274 | } |
| 275 | |
| 276 | /* Store register REGNO back into the child process. If REGNO is -1, |
| 277 | do this for all registers (including the floating point and SSE |
| 278 | registers). */ |
| 279 | void |
| 280 | store_inferior_registers (int regno) |
| 281 | { |
| 282 | int tid; |
| 283 | |
| 284 | /* Linux LWP ID's are process ID's. */ |
| 285 | if ((tid = TIDGET (inferior_ptid)) == 0) |
| 286 | tid = PIDGET (inferior_ptid); /* Not a threaded program. */ |
| 287 | |
| 288 | if (regno == -1) |
| 289 | { |
| 290 | store_regs (tid, regno); |
| 291 | store_fpregs (tid, regno); |
| 292 | return; |
| 293 | } |
| 294 | |
| 295 | if (GETREGS_SUPPLIES (regno)) |
| 296 | { |
| 297 | store_regs (tid, regno); |
| 298 | return; |
| 299 | } |
| 300 | |
| 301 | if (GETFPREGS_SUPPLIES (regno)) |
| 302 | { |
| 303 | store_fpregs (tid, regno); |
| 304 | return; |
| 305 | } |
| 306 | |
| 307 | internal_error (__FILE__, __LINE__, |
| 308 | "Got request to store bad register number %d.", regno); |
| 309 | } |
| 310 | \f |
| 311 | |
| 312 | static const unsigned char linux_syscall[] = { 0x0f, 0x05 }; |
| 313 | |
| 314 | #define LINUX_SYSCALL_LEN (sizeof linux_syscall) |
| 315 | |
| 316 | /* The system call number is stored in the %rax register. */ |
| 317 | #define LINUX_SYSCALL_REGNUM 0 /* %rax */ |
| 318 | |
| 319 | /* We are specifically interested in the sigreturn and rt_sigreturn |
| 320 | system calls. */ |
| 321 | |
| 322 | #ifndef SYS_sigreturn |
| 323 | #define SYS_sigreturn __NR_sigreturn |
| 324 | #endif |
| 325 | #ifndef SYS_rt_sigreturn |
| 326 | #define SYS_rt_sigreturn __NR_rt_sigreturn |
| 327 | #endif |
| 328 | |
| 329 | /* Offset to saved processor flags, from <asm/sigcontext.h>. */ |
| 330 | #define LINUX_SIGCONTEXT_EFLAGS_OFFSET (152) |
| 331 | /* Offset to saved processor registers from <asm/ucontext.h> */ |
| 332 | #define LINUX_UCONTEXT_SIGCONTEXT_OFFSET (36) |
| 333 | |
| 334 | /* Resume execution of the inferior process. |
| 335 | If STEP is nonzero, single-step it. |
| 336 | If SIGNAL is nonzero, give it that signal. */ |
| 337 | |
| 338 | void |
| 339 | child_resume (ptid_t ptid, int step, enum target_signal signal) |
| 340 | { |
| 341 | int pid = PIDGET (ptid); |
| 342 | int request = PTRACE_CONT; |
| 343 | |
| 344 | if (pid == -1) |
| 345 | /* Resume all threads. */ |
| 346 | /* I think this only gets used in the non-threaded case, where "resume |
| 347 | all threads" and "resume inferior_ptid" are the same. */ |
| 348 | pid = PIDGET (inferior_ptid); |
| 349 | |
| 350 | if (step) |
| 351 | { |
| 352 | CORE_ADDR pc = read_pc_pid (pid_to_ptid (pid)); |
| 353 | unsigned char buf[LINUX_SYSCALL_LEN]; |
| 354 | |
| 355 | request = PTRACE_SINGLESTEP; |
| 356 | |
| 357 | /* Returning from a signal trampoline is done by calling a |
| 358 | special system call (sigreturn or rt_sigreturn, see |
| 359 | i386-linux-tdep.c for more information). This system call |
| 360 | restores the registers that were saved when the signal was |
| 361 | raised, including %eflags. That means that single-stepping |
| 362 | won't work. Instead, we'll have to modify the signal context |
| 363 | that's about to be restored, and set the trace flag there. */ |
| 364 | |
| 365 | /* First check if PC is at a system call. */ |
| 366 | if (read_memory_nobpt (pc, (char *) buf, LINUX_SYSCALL_LEN) == 0 |
| 367 | && memcmp (buf, linux_syscall, LINUX_SYSCALL_LEN) == 0) |
| 368 | { |
| 369 | int syscall = |
| 370 | read_register_pid (LINUX_SYSCALL_REGNUM, pid_to_ptid (pid)); |
| 371 | |
| 372 | /* Then check the system call number. */ |
| 373 | if (syscall == SYS_rt_sigreturn) |
| 374 | { |
| 375 | CORE_ADDR sp = read_register (SP_REGNUM); |
| 376 | CORE_ADDR addr = sp; |
| 377 | unsigned long int eflags; |
| 378 | |
| 379 | addr += |
| 380 | sizeof (struct siginfo) + LINUX_UCONTEXT_SIGCONTEXT_OFFSET; |
| 381 | |
| 382 | /* Set the trace flag in the context that's about to be |
| 383 | restored. */ |
| 384 | addr += LINUX_SIGCONTEXT_EFLAGS_OFFSET; |
| 385 | read_memory (addr, (char *) &eflags, 8); |
| 386 | eflags |= 0x0100; |
| 387 | write_memory (addr, (char *) &eflags, 8); |
| 388 | } |
| 389 | } |
| 390 | } |
| 391 | |
| 392 | if (ptrace (request, pid, 0, target_signal_to_host (signal)) == -1) |
| 393 | perror_with_name ("ptrace"); |
| 394 | } |
| 395 | \f |
| 396 | |
| 397 | /* Copy LEN bytes to or from inferior's memory starting at MEMADDR |
| 398 | to debugger memory starting at MYADDR. Copy to inferior if |
| 399 | WRITE is nonzero. TARGET is ignored. |
| 400 | |
| 401 | Returns the length copied, which is either the LEN argument or zero. |
| 402 | This xfer function does not do partial moves, since child_ops |
| 403 | doesn't allow memory operations to cross below us in the target stack |
| 404 | anyway. */ |
| 405 | |
| 406 | int |
| 407 | child_xfer_memory (CORE_ADDR memaddr, char *myaddr, int len, int write, |
| 408 | struct mem_attrib *attrib ATTRIBUTE_UNUSED, |
| 409 | struct target_ops *target) |
| 410 | { |
| 411 | register int i; |
| 412 | /* Round starting address down to longword boundary. */ |
| 413 | register CORE_ADDR addr = memaddr & -sizeof (PTRACE_XFER_TYPE); |
| 414 | /* Round ending address up; get number of longwords that makes. */ |
| 415 | register int count |
| 416 | = (((memaddr + len) - addr) + sizeof (PTRACE_XFER_TYPE) - 1) |
| 417 | / sizeof (PTRACE_XFER_TYPE); |
| 418 | /* Allocate buffer of that many longwords. */ |
| 419 | /* FIXME (alloca): This code, cloned from infptrace.c, is unsafe |
| 420 | because it uses alloca to allocate a buffer of arbitrary size. |
| 421 | For very large xfers, this could crash GDB's stack. */ |
| 422 | register PTRACE_XFER_TYPE *buffer |
| 423 | = (PTRACE_XFER_TYPE *) alloca (count * sizeof (PTRACE_XFER_TYPE)); |
| 424 | |
| 425 | if (write) |
| 426 | { |
| 427 | /* Fill start and end extra bytes of buffer with existing memory data. */ |
| 428 | if (addr != memaddr || len < (int) sizeof (PTRACE_XFER_TYPE)) |
| 429 | { |
| 430 | /* Need part of initial word -- fetch it. */ |
| 431 | ptrace (PT_READ_I, PIDGET (inferior_ptid), |
| 432 | (PTRACE_ARG3_TYPE) addr, buffer); |
| 433 | } |
| 434 | |
| 435 | if (count > 1) /* FIXME, avoid if even boundary */ |
| 436 | { |
| 437 | ptrace (PT_READ_I, PIDGET (inferior_ptid), |
| 438 | ((PTRACE_ARG3_TYPE) |
| 439 | (addr + (count - 1) * sizeof (PTRACE_XFER_TYPE))), |
| 440 | buffer + count - 1); |
| 441 | } |
| 442 | |
| 443 | /* Copy data to be written over corresponding part of buffer */ |
| 444 | |
| 445 | memcpy ((char *) buffer + (memaddr & (sizeof (PTRACE_XFER_TYPE) - 1)), |
| 446 | myaddr, len); |
| 447 | |
| 448 | /* Write the entire buffer. */ |
| 449 | |
| 450 | for (i = 0; i < count; i++, addr += sizeof (PTRACE_XFER_TYPE)) |
| 451 | { |
| 452 | errno = 0; |
| 453 | ptrace (PT_WRITE_D, PIDGET (inferior_ptid), |
| 454 | (PTRACE_ARG3_TYPE) addr, buffer[i]); |
| 455 | if (errno) |
| 456 | { |
| 457 | /* Using the appropriate one (I or D) is necessary for |
| 458 | Gould NP1, at least. */ |
| 459 | errno = 0; |
| 460 | ptrace (PT_WRITE_I, PIDGET (inferior_ptid), |
| 461 | (PTRACE_ARG3_TYPE) addr, buffer[i]); |
| 462 | } |
| 463 | if (errno) |
| 464 | return 0; |
| 465 | } |
| 466 | #ifdef CLEAR_INSN_CACHE |
| 467 | CLEAR_INSN_CACHE (); |
| 468 | #endif |
| 469 | } |
| 470 | else |
| 471 | { |
| 472 | /* Read all the longwords */ |
| 473 | for (i = 0; i < count; i++, addr += sizeof (PTRACE_XFER_TYPE)) |
| 474 | { |
| 475 | errno = 0; |
| 476 | ptrace (PT_READ_I, PIDGET (inferior_ptid), |
| 477 | (PTRACE_ARG3_TYPE) addr, buffer + i); |
| 478 | if (errno) |
| 479 | return 0; |
| 480 | } |
| 481 | |
| 482 | /* Copy appropriate bytes out of the buffer. */ |
| 483 | memcpy (myaddr, |
| 484 | (char *) buffer + (memaddr & (sizeof (PTRACE_XFER_TYPE) - 1)), |
| 485 | len); |
| 486 | } |
| 487 | return len; |
| 488 | } |
| 489 | |
| 490 | /* Interpreting register set info found in core files. */ |
| 491 | |
| 492 | /* Provide registers to GDB from a core file. |
| 493 | |
| 494 | CORE_REG_SECT points to an array of bytes, which are the contents |
| 495 | of a `note' from a core file which BFD thinks might contain |
| 496 | register contents. CORE_REG_SIZE is its size. |
| 497 | |
| 498 | WHICH says which register set corelow suspects this is: |
| 499 | 0 --- the general-purpose register set, in elf_gregset_t format |
| 500 | 2 --- the floating-point register set, in elf_fpregset_t format |
| 501 | |
| 502 | REG_ADDR isn't used on Linux. */ |
| 503 | |
| 504 | static void |
| 505 | fetch_core_registers (char *core_reg_sect, unsigned core_reg_size, |
| 506 | int which, CORE_ADDR reg_addr) |
| 507 | { |
| 508 | elf_gregset_t gregset; |
| 509 | elf_fpregset_t fpregset; |
| 510 | switch (which) |
| 511 | { |
| 512 | case 0: |
| 513 | if (core_reg_size != sizeof (gregset)) |
| 514 | warning ("Wrong size gregset in core file."); |
| 515 | else |
| 516 | { |
| 517 | memcpy (&gregset, core_reg_sect, sizeof (gregset)); |
| 518 | supply_gregset (&gregset); |
| 519 | } |
| 520 | break; |
| 521 | |
| 522 | case 2: |
| 523 | if (core_reg_size != sizeof (fpregset)) |
| 524 | warning ("Wrong size fpregset in core file."); |
| 525 | else |
| 526 | { |
| 527 | memcpy (&fpregset, core_reg_sect, sizeof (fpregset)); |
| 528 | supply_fpregset (&fpregset); |
| 529 | } |
| 530 | break; |
| 531 | |
| 532 | default: |
| 533 | /* We've covered all the kinds of registers we know about here, |
| 534 | so this must be something we wouldn't know what to do with |
| 535 | anyway. Just ignore it. */ |
| 536 | break; |
| 537 | } |
| 538 | } |
| 539 | |
| 540 | /* Register that we are able to handle Linux ELF core file formats. */ |
| 541 | |
| 542 | static struct core_fns linux_elf_core_fns = { |
| 543 | bfd_target_elf_flavour, /* core_flavour */ |
| 544 | default_check_format, /* check_format */ |
| 545 | default_core_sniffer, /* core_sniffer */ |
| 546 | fetch_core_registers, /* core_read_registers */ |
| 547 | NULL /* next */ |
| 548 | }; |
| 549 | \f |
| 550 | |
| 551 | #if !defined (offsetof) |
| 552 | #define offsetof(TYPE, MEMBER) ((unsigned long) &((TYPE *)0)->MEMBER) |
| 553 | #endif |
| 554 | |
| 555 | /* Record the value of the debug control register. */ |
| 556 | static long debug_control_mirror; |
| 557 | |
| 558 | /* Record which address associates with which register. */ |
| 559 | static CORE_ADDR address_lookup[DR_LASTADDR - DR_FIRSTADDR + 1]; |
| 560 | |
| 561 | void |
| 562 | _initialize_x86_64_linux_nat (void) |
| 563 | { |
| 564 | add_core_fns (&linux_elf_core_fns); |
| 565 | } |