| /* Native-dependent code for GNU/Linux x86-64. |
| |
| Copyright (C) 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010 |
| Free Software Foundation, Inc. |
| Contributed by Jiri Smid, SuSE Labs. |
| |
| This file is part of GDB. |
| |
| This program is free software; you can redistribute it and/or modify |
| it under the terms of the GNU General Public License as published by |
| the Free Software Foundation; either version 3 of the License, or |
| (at your option) any later version. |
| |
| This program is distributed in the hope that it will be useful, |
| but WITHOUT ANY WARRANTY; without even the implied warranty of |
| MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| GNU General Public License for more details. |
| |
| You should have received a copy of the GNU General Public License |
| along with this program. If not, see <http://www.gnu.org/licenses/>. */ |
| |
| #include "defs.h" |
| #include "inferior.h" |
| #include "gdbcore.h" |
| #include "regcache.h" |
| #include "linux-nat.h" |
| #include "amd64-linux-tdep.h" |
| |
| #include "gdb_assert.h" |
| #include "gdb_string.h" |
| #include <sys/ptrace.h> |
| #include <sys/debugreg.h> |
| #include <sys/syscall.h> |
| #include <sys/procfs.h> |
| #include <asm/prctl.h> |
| /* FIXME ezannoni-2003-07-09: we need <sys/reg.h> to be included after |
| <asm/ptrace.h> because the latter redefines FS and GS for no apparent |
| reason, and those definitions don't match the ones that libpthread_db |
| uses, which come from <sys/reg.h>. */ |
| /* ezannoni-2003-07-09: I think this is fixed. The extraneous defs have |
| been removed from ptrace.h in the kernel. However, better safe than |
| sorry. */ |
| #include <asm/ptrace.h> |
| #include <sys/reg.h> |
| #include "gdb_proc_service.h" |
| |
| /* Prototypes for supply_gregset etc. */ |
| #include "gregset.h" |
| |
| #include "amd64-tdep.h" |
| #include "i386-linux-tdep.h" |
| #include "amd64-nat.h" |
| #include "i386-nat.h" |
| |
| /* Mapping between the general-purpose registers in GNU/Linux x86-64 |
| `struct user' format and GDB's register cache layout. */ |
| |
| static int amd64_linux_gregset64_reg_offset[] = |
| { |
| RAX * 8, RBX * 8, /* %rax, %rbx */ |
| RCX * 8, RDX * 8, /* %rcx, %rdx */ |
| RSI * 8, RDI * 8, /* %rsi, %rdi */ |
| RBP * 8, RSP * 8, /* %rbp, %rsp */ |
| R8 * 8, R9 * 8, /* %r8 ... */ |
| R10 * 8, R11 * 8, |
| R12 * 8, R13 * 8, |
| R14 * 8, R15 * 8, /* ... %r15 */ |
| RIP * 8, EFLAGS * 8, /* %rip, %eflags */ |
| CS * 8, SS * 8, /* %cs, %ss */ |
| DS * 8, ES * 8, /* %ds, %es */ |
| FS * 8, GS * 8, /* %fs, %gs */ |
| -1, -1, -1, -1, -1, -1, -1, -1, |
| -1, -1, -1, -1, -1, -1, -1, -1, |
| -1, -1, -1, -1, -1, -1, -1, -1, |
| -1, -1, -1, -1, -1, -1, -1, -1, -1, |
| ORIG_RAX * 8 |
| }; |
| |
| |
| /* Mapping between the general-purpose registers in GNU/Linux x86-64 |
| `struct user' format and GDB's register cache layout for GNU/Linux |
| i386. |
| |
| Note that most GNU/Linux x86-64 registers are 64-bit, while the |
| GNU/Linux i386 registers are all 32-bit, but since we're |
| little-endian we get away with that. */ |
| |
| /* From <sys/reg.h> on GNU/Linux i386. */ |
| static int amd64_linux_gregset32_reg_offset[] = |
| { |
| RAX * 8, RCX * 8, /* %eax, %ecx */ |
| RDX * 8, RBX * 8, /* %edx, %ebx */ |
| RSP * 8, RBP * 8, /* %esp, %ebp */ |
| RSI * 8, RDI * 8, /* %esi, %edi */ |
| RIP * 8, EFLAGS * 8, /* %eip, %eflags */ |
| CS * 8, SS * 8, /* %cs, %ss */ |
| DS * 8, ES * 8, /* %ds, %es */ |
| FS * 8, GS * 8, /* %fs, %gs */ |
| -1, -1, -1, -1, -1, -1, -1, -1, |
| -1, -1, -1, -1, -1, -1, -1, -1, |
| -1, -1, -1, -1, -1, -1, -1, -1, -1, |
| ORIG_RAX * 8 /* "orig_eax" */ |
| }; |
| |
| |
| /* Transfering the general-purpose registers between GDB, inferiors |
| and core files. */ |
| |
| /* Fill GDB's register cache with the general-purpose register values |
| in *GREGSETP. */ |
| |
| void |
| supply_gregset (struct regcache *regcache, const elf_gregset_t *gregsetp) |
| { |
| amd64_supply_native_gregset (regcache, gregsetp, -1); |
| } |
| |
| /* Fill register REGNUM (if it is a general-purpose register) in |
| *GREGSETP with the value in GDB's register cache. If REGNUM is -1, |
| do this for all registers. */ |
| |
| void |
| fill_gregset (const struct regcache *regcache, |
| elf_gregset_t *gregsetp, int regnum) |
| { |
| amd64_collect_native_gregset (regcache, gregsetp, regnum); |
| } |
| |
| /* Transfering floating-point registers between GDB, inferiors and cores. */ |
| |
| /* Fill GDB's register cache with the floating-point and SSE register |
| values in *FPREGSETP. */ |
| |
| void |
| supply_fpregset (struct regcache *regcache, const elf_fpregset_t *fpregsetp) |
| { |
| amd64_supply_fxsave (regcache, -1, fpregsetp); |
| } |
| |
| /* Fill register REGNUM (if it is a floating-point or SSE register) in |
| *FPREGSETP with the value in GDB's register cache. If REGNUM is |
| -1, do this for all registers. */ |
| |
| void |
| fill_fpregset (const struct regcache *regcache, |
| elf_fpregset_t *fpregsetp, int regnum) |
| { |
| amd64_collect_fxsave (regcache, regnum, fpregsetp); |
| } |
| |
| |
| /* Transferring arbitrary registers between GDB and inferior. */ |
| |
| /* Fetch register REGNUM from the child process. If REGNUM is -1, do |
| this for all registers (including the floating point and SSE |
| registers). */ |
| |
| static void |
| amd64_linux_fetch_inferior_registers (struct target_ops *ops, |
| struct regcache *regcache, int regnum) |
| { |
| struct gdbarch *gdbarch = get_regcache_arch (regcache); |
| int tid; |
| |
| /* GNU/Linux LWP ID's are process ID's. */ |
| tid = TIDGET (inferior_ptid); |
| if (tid == 0) |
| tid = PIDGET (inferior_ptid); /* Not a threaded program. */ |
| |
| if (regnum == -1 || amd64_native_gregset_supplies_p (gdbarch, regnum)) |
| { |
| elf_gregset_t regs; |
| |
| if (ptrace (PTRACE_GETREGS, tid, 0, (long) ®s) < 0) |
| perror_with_name (_("Couldn't get registers")); |
| |
| amd64_supply_native_gregset (regcache, ®s, -1); |
| if (regnum != -1) |
| return; |
| } |
| |
| if (regnum == -1 || !amd64_native_gregset_supplies_p (gdbarch, regnum)) |
| { |
| elf_fpregset_t fpregs; |
| |
| if (ptrace (PTRACE_GETFPREGS, tid, 0, (long) &fpregs) < 0) |
| perror_with_name (_("Couldn't get floating point status")); |
| |
| amd64_supply_fxsave (regcache, -1, &fpregs); |
| } |
| } |
| |
| /* Store register REGNUM back into the child process. If REGNUM is |
| -1, do this for all registers (including the floating-point and SSE |
| registers). */ |
| |
| static void |
| amd64_linux_store_inferior_registers (struct target_ops *ops, |
| struct regcache *regcache, int regnum) |
| { |
| struct gdbarch *gdbarch = get_regcache_arch (regcache); |
| int tid; |
| |
| /* GNU/Linux LWP ID's are process ID's. */ |
| tid = TIDGET (inferior_ptid); |
| if (tid == 0) |
| tid = PIDGET (inferior_ptid); /* Not a threaded program. */ |
| |
| if (regnum == -1 || amd64_native_gregset_supplies_p (gdbarch, regnum)) |
| { |
| elf_gregset_t regs; |
| |
| if (ptrace (PTRACE_GETREGS, tid, 0, (long) ®s) < 0) |
| perror_with_name (_("Couldn't get registers")); |
| |
| amd64_collect_native_gregset (regcache, ®s, regnum); |
| |
| if (ptrace (PTRACE_SETREGS, tid, 0, (long) ®s) < 0) |
| perror_with_name (_("Couldn't write registers")); |
| |
| if (regnum != -1) |
| return; |
| } |
| |
| if (regnum == -1 || !amd64_native_gregset_supplies_p (gdbarch, regnum)) |
| { |
| elf_fpregset_t fpregs; |
| |
| if (ptrace (PTRACE_GETFPREGS, tid, 0, (long) &fpregs) < 0) |
| perror_with_name (_("Couldn't get floating point status")); |
| |
| amd64_collect_fxsave (regcache, regnum, &fpregs); |
| |
| if (ptrace (PTRACE_SETFPREGS, tid, 0, (long) &fpregs) < 0) |
| perror_with_name (_("Couldn't write floating point status")); |
| |
| return; |
| } |
| } |
| |
| /* Support for debug registers. */ |
| |
| static unsigned long amd64_linux_dr[DR_CONTROL + 1]; |
| |
| static unsigned long |
| amd64_linux_dr_get (ptid_t ptid, int regnum) |
| { |
| int tid; |
| unsigned long value; |
| |
| tid = TIDGET (ptid); |
| if (tid == 0) |
| tid = PIDGET (ptid); |
| |
| /* FIXME: kettenis/2001-03-27: Calling perror_with_name if the |
| ptrace call fails breaks debugging remote targets. The correct |
| way to fix this is to add the hardware breakpoint and watchpoint |
| stuff to the target vector. For now, just return zero if the |
| ptrace call fails. */ |
| errno = 0; |
| value = ptrace (PTRACE_PEEKUSER, tid, |
| offsetof (struct user, u_debugreg[regnum]), 0); |
| if (errno != 0) |
| #if 0 |
| perror_with_name (_("Couldn't read debug register")); |
| #else |
| return 0; |
| #endif |
| |
| return value; |
| } |
| |
| /* Set debug register REGNUM to VALUE in only the one LWP of PTID. */ |
| |
| static void |
| amd64_linux_dr_set (ptid_t ptid, int regnum, unsigned long value) |
| { |
| int tid; |
| |
| tid = TIDGET (ptid); |
| if (tid == 0) |
| tid = PIDGET (ptid); |
| |
| errno = 0; |
| ptrace (PTRACE_POKEUSER, tid, |
| offsetof (struct user, u_debugreg[regnum]), value); |
| if (errno != 0) |
| perror_with_name (_("Couldn't write debug register")); |
| } |
| |
| /* Set DR_CONTROL to ADDR in all LWPs of LWP_LIST. */ |
| |
| static void |
| amd64_linux_dr_set_control (unsigned long control) |
| { |
| struct lwp_info *lp; |
| ptid_t ptid; |
| |
| amd64_linux_dr[DR_CONTROL] = control; |
| ALL_LWPS (lp, ptid) |
| amd64_linux_dr_set (ptid, DR_CONTROL, control); |
| } |
| |
| /* Set address REGNUM (zero based) to ADDR in all LWPs of LWP_LIST. */ |
| |
| static void |
| amd64_linux_dr_set_addr (int regnum, CORE_ADDR addr) |
| { |
| struct lwp_info *lp; |
| ptid_t ptid; |
| |
| gdb_assert (regnum >= 0 && regnum <= DR_LASTADDR - DR_FIRSTADDR); |
| |
| amd64_linux_dr[DR_FIRSTADDR + regnum] = addr; |
| ALL_LWPS (lp, ptid) |
| amd64_linux_dr_set (ptid, DR_FIRSTADDR + regnum, addr); |
| } |
| |
| /* Set address REGNUM (zero based) to zero in all LWPs of LWP_LIST. */ |
| |
| static void |
| amd64_linux_dr_reset_addr (int regnum) |
| { |
| amd64_linux_dr_set_addr (regnum, 0); |
| } |
| |
| /* Get DR_STATUS from only the one LWP of INFERIOR_PTID. */ |
| |
| static unsigned long |
| amd64_linux_dr_get_status (void) |
| { |
| return amd64_linux_dr_get (inferior_ptid, DR_STATUS); |
| } |
| |
| /* Unset MASK bits in DR_STATUS in all LWPs of LWP_LIST. */ |
| |
| static void |
| amd64_linux_dr_unset_status (unsigned long mask) |
| { |
| struct lwp_info *lp; |
| ptid_t ptid; |
| |
| ALL_LWPS (lp, ptid) |
| { |
| unsigned long value; |
| |
| value = amd64_linux_dr_get (ptid, DR_STATUS); |
| value &= ~mask; |
| amd64_linux_dr_set (ptid, DR_STATUS, value); |
| } |
| } |
| |
| |
| static void |
| amd64_linux_new_thread (ptid_t ptid) |
| { |
| int i; |
| |
| for (i = DR_FIRSTADDR; i <= DR_LASTADDR; i++) |
| amd64_linux_dr_set (ptid, i, amd64_linux_dr[i]); |
| |
| amd64_linux_dr_set (ptid, DR_CONTROL, amd64_linux_dr[DR_CONTROL]); |
| } |
| |
| |
| /* This function is called by libthread_db as part of its handling of |
| a request for a thread's local storage address. */ |
| |
| ps_err_e |
| ps_get_thread_area (const struct ps_prochandle *ph, |
| lwpid_t lwpid, int idx, void **base) |
| { |
| if (gdbarch_ptr_bit (target_gdbarch) == 32) |
| { |
| /* The full structure is found in <asm-i386/ldt.h>. The second |
| integer is the LDT's base_address and that is used to locate |
| the thread's local storage. See i386-linux-nat.c more |
| info. */ |
| unsigned int desc[4]; |
| |
| /* This code assumes that "int" is 32 bits and that |
| GET_THREAD_AREA returns no more than 4 int values. */ |
| gdb_assert (sizeof (int) == 4); |
| #ifndef PTRACE_GET_THREAD_AREA |
| #define PTRACE_GET_THREAD_AREA 25 |
| #endif |
| if (ptrace (PTRACE_GET_THREAD_AREA, |
| lwpid, (void *) (long) idx, (unsigned long) &desc) < 0) |
| return PS_ERR; |
| |
| /* Extend the value to 64 bits. Here it's assumed that a "long" |
| and a "void *" are the same. */ |
| (*base) = (void *) (long) desc[1]; |
| return PS_OK; |
| } |
| else |
| { |
| /* This definition comes from prctl.h, but some kernels may not |
| have it. */ |
| #ifndef PTRACE_ARCH_PRCTL |
| #define PTRACE_ARCH_PRCTL 30 |
| #endif |
| /* FIXME: ezannoni-2003-07-09 see comment above about include |
| file order. We could be getting bogus values for these two. */ |
| gdb_assert (FS < ELF_NGREG); |
| gdb_assert (GS < ELF_NGREG); |
| switch (idx) |
| { |
| case FS: |
| if (ptrace (PTRACE_ARCH_PRCTL, lwpid, base, ARCH_GET_FS) == 0) |
| return PS_OK; |
| break; |
| case GS: |
| if (ptrace (PTRACE_ARCH_PRCTL, lwpid, base, ARCH_GET_GS) == 0) |
| return PS_OK; |
| break; |
| default: /* Should not happen. */ |
| return PS_BADADDR; |
| } |
| } |
| return PS_ERR; /* ptrace failed. */ |
| } |
| |
| |
| static void (*super_post_startup_inferior) (ptid_t ptid); |
| |
| static void |
| amd64_linux_child_post_startup_inferior (ptid_t ptid) |
| { |
| i386_cleanup_dregs (); |
| super_post_startup_inferior (ptid); |
| } |
| |
| |
| /* When GDB is built as a 64-bit application on linux, the |
| PTRACE_GETSIGINFO data is always presented in 64-bit layout. Since |
| debugging a 32-bit inferior with a 64-bit GDB should look the same |
| as debugging it with a 32-bit GDB, we do the 32-bit <-> 64-bit |
| conversion in-place ourselves. */ |
| |
| /* These types below (compat_*) define a siginfo type that is layout |
| compatible with the siginfo type exported by the 32-bit userspace |
| support. */ |
| |
| typedef int compat_int_t; |
| typedef unsigned int compat_uptr_t; |
| |
| typedef int compat_time_t; |
| typedef int compat_timer_t; |
| typedef int compat_clock_t; |
| |
| struct compat_timeval |
| { |
| compat_time_t tv_sec; |
| int tv_usec; |
| }; |
| |
| typedef union compat_sigval |
| { |
| compat_int_t sival_int; |
| compat_uptr_t sival_ptr; |
| } compat_sigval_t; |
| |
| typedef struct compat_siginfo |
| { |
| int si_signo; |
| int si_errno; |
| int si_code; |
| |
| union |
| { |
| int _pad[((128 / sizeof (int)) - 3)]; |
| |
| /* kill() */ |
| struct |
| { |
| unsigned int _pid; |
| unsigned int _uid; |
| } _kill; |
| |
| /* POSIX.1b timers */ |
| struct |
| { |
| compat_timer_t _tid; |
| int _overrun; |
| compat_sigval_t _sigval; |
| } _timer; |
| |
| /* POSIX.1b signals */ |
| struct |
| { |
| unsigned int _pid; |
| unsigned int _uid; |
| compat_sigval_t _sigval; |
| } _rt; |
| |
| /* SIGCHLD */ |
| struct |
| { |
| unsigned int _pid; |
| unsigned int _uid; |
| int _status; |
| compat_clock_t _utime; |
| compat_clock_t _stime; |
| } _sigchld; |
| |
| /* SIGILL, SIGFPE, SIGSEGV, SIGBUS */ |
| struct |
| { |
| unsigned int _addr; |
| } _sigfault; |
| |
| /* SIGPOLL */ |
| struct |
| { |
| int _band; |
| int _fd; |
| } _sigpoll; |
| } _sifields; |
| } compat_siginfo_t; |
| |
| #define cpt_si_pid _sifields._kill._pid |
| #define cpt_si_uid _sifields._kill._uid |
| #define cpt_si_timerid _sifields._timer._tid |
| #define cpt_si_overrun _sifields._timer._overrun |
| #define cpt_si_status _sifields._sigchld._status |
| #define cpt_si_utime _sifields._sigchld._utime |
| #define cpt_si_stime _sifields._sigchld._stime |
| #define cpt_si_ptr _sifields._rt._sigval.sival_ptr |
| #define cpt_si_addr _sifields._sigfault._addr |
| #define cpt_si_band _sifields._sigpoll._band |
| #define cpt_si_fd _sifields._sigpoll._fd |
| |
| /* glibc at least up to 2.3.2 doesn't have si_timerid, si_overrun. |
| In their place is si_timer1,si_timer2. */ |
| #ifndef si_timerid |
| #define si_timerid si_timer1 |
| #endif |
| #ifndef si_overrun |
| #define si_overrun si_timer2 |
| #endif |
| |
| static void |
| compat_siginfo_from_siginfo (compat_siginfo_t *to, siginfo_t *from) |
| { |
| memset (to, 0, sizeof (*to)); |
| |
| to->si_signo = from->si_signo; |
| to->si_errno = from->si_errno; |
| to->si_code = from->si_code; |
| |
| if (to->si_code < 0) |
| { |
| to->cpt_si_ptr = (intptr_t) from->si_ptr; |
| } |
| else if (to->si_code == SI_USER) |
| { |
| to->cpt_si_pid = from->si_pid; |
| to->cpt_si_uid = from->si_uid; |
| } |
| else if (to->si_code == SI_TIMER) |
| { |
| to->cpt_si_timerid = from->si_timerid; |
| to->cpt_si_overrun = from->si_overrun; |
| to->cpt_si_ptr = (intptr_t) from->si_ptr; |
| } |
| else |
| { |
| switch (to->si_signo) |
| { |
| case SIGCHLD: |
| to->cpt_si_pid = from->si_pid; |
| to->cpt_si_uid = from->si_uid; |
| to->cpt_si_status = from->si_status; |
| to->cpt_si_utime = from->si_utime; |
| to->cpt_si_stime = from->si_stime; |
| break; |
| case SIGILL: |
| case SIGFPE: |
| case SIGSEGV: |
| case SIGBUS: |
| to->cpt_si_addr = (intptr_t) from->si_addr; |
| break; |
| case SIGPOLL: |
| to->cpt_si_band = from->si_band; |
| to->cpt_si_fd = from->si_fd; |
| break; |
| default: |
| to->cpt_si_pid = from->si_pid; |
| to->cpt_si_uid = from->si_uid; |
| to->cpt_si_ptr = (intptr_t) from->si_ptr; |
| break; |
| } |
| } |
| } |
| |
| static void |
| siginfo_from_compat_siginfo (siginfo_t *to, compat_siginfo_t *from) |
| { |
| memset (to, 0, sizeof (*to)); |
| |
| to->si_signo = from->si_signo; |
| to->si_errno = from->si_errno; |
| to->si_code = from->si_code; |
| |
| if (to->si_code < 0) |
| { |
| to->si_ptr = (void *) (intptr_t) from->cpt_si_ptr; |
| } |
| else if (to->si_code == SI_USER) |
| { |
| to->si_pid = from->cpt_si_pid; |
| to->si_uid = from->cpt_si_uid; |
| } |
| else if (to->si_code == SI_TIMER) |
| { |
| to->si_timerid = from->cpt_si_timerid; |
| to->si_overrun = from->cpt_si_overrun; |
| to->si_ptr = (void *) (intptr_t) from->cpt_si_ptr; |
| } |
| else |
| { |
| switch (to->si_signo) |
| { |
| case SIGCHLD: |
| to->si_pid = from->cpt_si_pid; |
| to->si_uid = from->cpt_si_uid; |
| to->si_status = from->cpt_si_status; |
| to->si_utime = from->cpt_si_utime; |
| to->si_stime = from->cpt_si_stime; |
| break; |
| case SIGILL: |
| case SIGFPE: |
| case SIGSEGV: |
| case SIGBUS: |
| to->si_addr = (void *) (intptr_t) from->cpt_si_addr; |
| break; |
| case SIGPOLL: |
| to->si_band = from->cpt_si_band; |
| to->si_fd = from->cpt_si_fd; |
| break; |
| default: |
| to->si_pid = from->cpt_si_pid; |
| to->si_uid = from->cpt_si_uid; |
| to->si_ptr = (void* ) (intptr_t) from->cpt_si_ptr; |
| break; |
| } |
| } |
| } |
| |
| /* Convert a native/host siginfo object, into/from the siginfo in the |
| layout of the inferiors' architecture. Returns true if any |
| conversion was done; false otherwise. If DIRECTION is 1, then copy |
| from INF to NATIVE. If DIRECTION is 0, copy from NATIVE to |
| INF. */ |
| |
| static int |
| amd64_linux_siginfo_fixup (struct siginfo *native, gdb_byte *inf, int direction) |
| { |
| /* Is the inferior 32-bit? If so, then do fixup the siginfo |
| object. */ |
| if (gdbarch_addr_bit (get_frame_arch (get_current_frame ())) == 32) |
| { |
| gdb_assert (sizeof (struct siginfo) == sizeof (compat_siginfo_t)); |
| |
| if (direction == 0) |
| compat_siginfo_from_siginfo ((struct compat_siginfo *) inf, native); |
| else |
| siginfo_from_compat_siginfo (native, (struct compat_siginfo *) inf); |
| |
| return 1; |
| } |
| else |
| return 0; |
| } |
| |
| /* Provide a prototype to silence -Wmissing-prototypes. */ |
| void _initialize_amd64_linux_nat (void); |
| |
| void |
| _initialize_amd64_linux_nat (void) |
| { |
| struct target_ops *t; |
| |
| amd64_native_gregset32_reg_offset = amd64_linux_gregset32_reg_offset; |
| amd64_native_gregset32_num_regs = I386_LINUX_NUM_REGS; |
| amd64_native_gregset64_reg_offset = amd64_linux_gregset64_reg_offset; |
| amd64_native_gregset64_num_regs = AMD64_LINUX_NUM_REGS; |
| |
| gdb_assert (ARRAY_SIZE (amd64_linux_gregset32_reg_offset) |
| == amd64_native_gregset32_num_regs); |
| gdb_assert (ARRAY_SIZE (amd64_linux_gregset64_reg_offset) |
| == amd64_native_gregset64_num_regs); |
| |
| /* Fill in the generic GNU/Linux methods. */ |
| t = linux_target (); |
| |
| i386_use_watchpoints (t); |
| |
| i386_dr_low.set_control = amd64_linux_dr_set_control; |
| i386_dr_low.set_addr = amd64_linux_dr_set_addr; |
| i386_dr_low.reset_addr = amd64_linux_dr_reset_addr; |
| i386_dr_low.get_status = amd64_linux_dr_get_status; |
| i386_dr_low.unset_status = amd64_linux_dr_unset_status; |
| i386_set_debug_register_length (8); |
| |
| /* Override the GNU/Linux inferior startup hook. */ |
| super_post_startup_inferior = t->to_post_startup_inferior; |
| t->to_post_startup_inferior = amd64_linux_child_post_startup_inferior; |
| |
| /* Add our register access methods. */ |
| t->to_fetch_registers = amd64_linux_fetch_inferior_registers; |
| t->to_store_registers = amd64_linux_store_inferior_registers; |
| |
| /* Register the target. */ |
| linux_nat_add_target (t); |
| linux_nat_set_new_thread (t, amd64_linux_new_thread); |
| linux_nat_set_siginfo_fixup (t, amd64_linux_siginfo_fixup); |
| } |