/* Native-dependent code for GNU/Linux x86-64.
|
/* Native-dependent code for GNU/Linux x86-64.
|
|
|
Copyright (C) 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008
|
Copyright (C) 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008
|
Free Software Foundation, Inc.
|
Free Software Foundation, Inc.
|
Contributed by Jiri Smid, SuSE Labs.
|
Contributed by Jiri Smid, SuSE Labs.
|
|
|
This file is part of GDB.
|
This file is part of GDB.
|
|
|
This program is free software; you can redistribute it and/or modify
|
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
|
it under the terms of the GNU General Public License as published by
|
the Free Software Foundation; either version 3 of the License, or
|
the Free Software Foundation; either version 3 of the License, or
|
(at your option) any later version.
|
(at your option) any later version.
|
|
|
This program is distributed in the hope that it will be useful,
|
This program is distributed in the hope that it will be useful,
|
but WITHOUT ANY WARRANTY; without even the implied warranty of
|
but WITHOUT ANY WARRANTY; without even the implied warranty of
|
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
GNU General Public License for more details.
|
GNU General Public License for more details.
|
|
|
You should have received a copy of the GNU General Public License
|
You should have received a copy of the GNU General Public License
|
along with this program. If not, see <http://www.gnu.org/licenses/>. */
|
along with this program. If not, see <http://www.gnu.org/licenses/>. */
|
|
|
#include "defs.h"
|
#include "defs.h"
|
#include "inferior.h"
|
#include "inferior.h"
|
#include "gdbcore.h"
|
#include "gdbcore.h"
|
#include "regcache.h"
|
#include "regcache.h"
|
#include "linux-nat.h"
|
#include "linux-nat.h"
|
#include "amd64-linux-tdep.h"
|
#include "amd64-linux-tdep.h"
|
|
|
#include "gdb_assert.h"
|
#include "gdb_assert.h"
|
#include "gdb_string.h"
|
#include "gdb_string.h"
|
#include <sys/ptrace.h>
|
#include <sys/ptrace.h>
|
#include <sys/debugreg.h>
|
#include <sys/debugreg.h>
|
#include <sys/syscall.h>
|
#include <sys/syscall.h>
|
#include <sys/procfs.h>
|
#include <sys/procfs.h>
|
#include <asm/prctl.h>
|
#include <asm/prctl.h>
|
/* FIXME ezannoni-2003-07-09: we need <sys/reg.h> to be included after
|
/* 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
|
<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
|
reason, and those definitions don't match the ones that libpthread_db
|
uses, which come from <sys/reg.h>. */
|
uses, which come from <sys/reg.h>. */
|
/* ezannoni-2003-07-09: I think this is fixed. The extraneous defs have
|
/* 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
|
been removed from ptrace.h in the kernel. However, better safe than
|
sorry. */
|
sorry. */
|
#include <asm/ptrace.h>
|
#include <asm/ptrace.h>
|
#include <sys/reg.h>
|
#include <sys/reg.h>
|
#include "gdb_proc_service.h"
|
#include "gdb_proc_service.h"
|
|
|
/* Prototypes for supply_gregset etc. */
|
/* Prototypes for supply_gregset etc. */
|
#include "gregset.h"
|
#include "gregset.h"
|
|
|
#include "amd64-tdep.h"
|
#include "amd64-tdep.h"
|
#include "i386-linux-tdep.h"
|
#include "i386-linux-tdep.h"
|
#include "amd64-nat.h"
|
#include "amd64-nat.h"
|
|
|
/* Mapping between the general-purpose registers in GNU/Linux x86-64
|
/* Mapping between the general-purpose registers in GNU/Linux x86-64
|
`struct user' format and GDB's register cache layout. */
|
`struct user' format and GDB's register cache layout. */
|
|
|
static int amd64_linux_gregset64_reg_offset[] =
|
static int amd64_linux_gregset64_reg_offset[] =
|
{
|
{
|
RAX * 8, RBX * 8, /* %rax, %rbx */
|
RAX * 8, RBX * 8, /* %rax, %rbx */
|
RCX * 8, RDX * 8, /* %rcx, %rdx */
|
RCX * 8, RDX * 8, /* %rcx, %rdx */
|
RSI * 8, RDI * 8, /* %rsi, %rdi */
|
RSI * 8, RDI * 8, /* %rsi, %rdi */
|
RBP * 8, RSP * 8, /* %rbp, %rsp */
|
RBP * 8, RSP * 8, /* %rbp, %rsp */
|
R8 * 8, R9 * 8, /* %r8 ... */
|
R8 * 8, R9 * 8, /* %r8 ... */
|
R10 * 8, R11 * 8,
|
R10 * 8, R11 * 8,
|
R12 * 8, R13 * 8,
|
R12 * 8, R13 * 8,
|
R14 * 8, R15 * 8, /* ... %r15 */
|
R14 * 8, R15 * 8, /* ... %r15 */
|
RIP * 8, EFLAGS * 8, /* %rip, %eflags */
|
RIP * 8, EFLAGS * 8, /* %rip, %eflags */
|
CS * 8, SS * 8, /* %cs, %ss */
|
CS * 8, SS * 8, /* %cs, %ss */
|
DS * 8, ES * 8, /* %ds, %es */
|
DS * 8, ES * 8, /* %ds, %es */
|
FS * 8, GS * 8, /* %fs, %gs */
|
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, -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
|
ORIG_RAX * 8
|
};
|
};
|
|
|
|
|
/* Mapping between the general-purpose registers in GNU/Linux x86-64
|
/* Mapping between the general-purpose registers in GNU/Linux x86-64
|
`struct user' format and GDB's register cache layout for GNU/Linux
|
`struct user' format and GDB's register cache layout for GNU/Linux
|
i386.
|
i386.
|
|
|
Note that most GNU/Linux x86-64 registers are 64-bit, while the
|
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
|
GNU/Linux i386 registers are all 32-bit, but since we're
|
little-endian we get away with that. */
|
little-endian we get away with that. */
|
|
|
/* From <sys/reg.h> on GNU/Linux i386. */
|
/* From <sys/reg.h> on GNU/Linux i386. */
|
static int amd64_linux_gregset32_reg_offset[] =
|
static int amd64_linux_gregset32_reg_offset[] =
|
{
|
{
|
RAX * 8, RCX * 8, /* %eax, %ecx */
|
RAX * 8, RCX * 8, /* %eax, %ecx */
|
RDX * 8, RBX * 8, /* %edx, %ebx */
|
RDX * 8, RBX * 8, /* %edx, %ebx */
|
RSP * 8, RBP * 8, /* %esp, %ebp */
|
RSP * 8, RBP * 8, /* %esp, %ebp */
|
RSI * 8, RDI * 8, /* %esi, %edi */
|
RSI * 8, RDI * 8, /* %esi, %edi */
|
RIP * 8, EFLAGS * 8, /* %eip, %eflags */
|
RIP * 8, EFLAGS * 8, /* %eip, %eflags */
|
CS * 8, SS * 8, /* %cs, %ss */
|
CS * 8, SS * 8, /* %cs, %ss */
|
DS * 8, ES * 8, /* %ds, %es */
|
DS * 8, ES * 8, /* %ds, %es */
|
FS * 8, GS * 8, /* %fs, %gs */
|
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, -1, -1, -1, -1, -1, -1, -1, -1,
|
-1, -1, -1, -1, -1, -1, -1, -1, -1,
|
ORIG_RAX * 8 /* "orig_eax" */
|
ORIG_RAX * 8 /* "orig_eax" */
|
};
|
};
|
|
|
|
|
/* Transfering the general-purpose registers between GDB, inferiors
|
/* Transfering the general-purpose registers between GDB, inferiors
|
and core files. */
|
and core files. */
|
|
|
/* Fill GDB's register cache with the general-purpose register values
|
/* Fill GDB's register cache with the general-purpose register values
|
in *GREGSETP. */
|
in *GREGSETP. */
|
|
|
void
|
void
|
supply_gregset (struct regcache *regcache, const elf_gregset_t *gregsetp)
|
supply_gregset (struct regcache *regcache, const elf_gregset_t *gregsetp)
|
{
|
{
|
amd64_supply_native_gregset (regcache, gregsetp, -1);
|
amd64_supply_native_gregset (regcache, gregsetp, -1);
|
}
|
}
|
|
|
/* Fill register REGNUM (if it is a general-purpose register) in
|
/* Fill register REGNUM (if it is a general-purpose register) in
|
*GREGSETP with the value in GDB's register cache. If REGNUM is -1,
|
*GREGSETP with the value in GDB's register cache. If REGNUM is -1,
|
do this for all registers. */
|
do this for all registers. */
|
|
|
void
|
void
|
fill_gregset (const struct regcache *regcache,
|
fill_gregset (const struct regcache *regcache,
|
elf_gregset_t *gregsetp, int regnum)
|
elf_gregset_t *gregsetp, int regnum)
|
{
|
{
|
amd64_collect_native_gregset (regcache, gregsetp, regnum);
|
amd64_collect_native_gregset (regcache, gregsetp, regnum);
|
}
|
}
|
|
|
/* Transfering floating-point registers between GDB, inferiors and cores. */
|
/* Transfering floating-point registers between GDB, inferiors and cores. */
|
|
|
/* Fill GDB's register cache with the floating-point and SSE register
|
/* Fill GDB's register cache with the floating-point and SSE register
|
values in *FPREGSETP. */
|
values in *FPREGSETP. */
|
|
|
void
|
void
|
supply_fpregset (struct regcache *regcache, const elf_fpregset_t *fpregsetp)
|
supply_fpregset (struct regcache *regcache, const elf_fpregset_t *fpregsetp)
|
{
|
{
|
amd64_supply_fxsave (regcache, -1, fpregsetp);
|
amd64_supply_fxsave (regcache, -1, fpregsetp);
|
}
|
}
|
|
|
/* Fill register REGNUM (if it is a floating-point or SSE register) in
|
/* 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
|
*FPREGSETP with the value in GDB's register cache. If REGNUM is
|
-1, do this for all registers. */
|
-1, do this for all registers. */
|
|
|
void
|
void
|
fill_fpregset (const struct regcache *regcache,
|
fill_fpregset (const struct regcache *regcache,
|
elf_fpregset_t *fpregsetp, int regnum)
|
elf_fpregset_t *fpregsetp, int regnum)
|
{
|
{
|
amd64_collect_fxsave (regcache, regnum, fpregsetp);
|
amd64_collect_fxsave (regcache, regnum, fpregsetp);
|
}
|
}
|
|
|
|
|
/* Transferring arbitrary registers between GDB and inferior. */
|
/* Transferring arbitrary registers between GDB and inferior. */
|
|
|
/* Fetch register REGNUM from the child process. If REGNUM is -1, do
|
/* Fetch register REGNUM from the child process. If REGNUM is -1, do
|
this for all registers (including the floating point and SSE
|
this for all registers (including the floating point and SSE
|
registers). */
|
registers). */
|
|
|
static void
|
static void
|
amd64_linux_fetch_inferior_registers (struct regcache *regcache, int regnum)
|
amd64_linux_fetch_inferior_registers (struct regcache *regcache, int regnum)
|
{
|
{
|
struct gdbarch *gdbarch = get_regcache_arch (regcache);
|
struct gdbarch *gdbarch = get_regcache_arch (regcache);
|
int tid;
|
int tid;
|
|
|
/* GNU/Linux LWP ID's are process ID's. */
|
/* GNU/Linux LWP ID's are process ID's. */
|
tid = TIDGET (inferior_ptid);
|
tid = TIDGET (inferior_ptid);
|
if (tid == 0)
|
if (tid == 0)
|
tid = PIDGET (inferior_ptid); /* Not a threaded program. */
|
tid = PIDGET (inferior_ptid); /* Not a threaded program. */
|
|
|
if (regnum == -1 || amd64_native_gregset_supplies_p (gdbarch, regnum))
|
if (regnum == -1 || amd64_native_gregset_supplies_p (gdbarch, regnum))
|
{
|
{
|
elf_gregset_t regs;
|
elf_gregset_t regs;
|
|
|
if (ptrace (PTRACE_GETREGS, tid, 0, (long) ®s) < 0)
|
if (ptrace (PTRACE_GETREGS, tid, 0, (long) ®s) < 0)
|
perror_with_name (_("Couldn't get registers"));
|
perror_with_name (_("Couldn't get registers"));
|
|
|
amd64_supply_native_gregset (regcache, ®s, -1);
|
amd64_supply_native_gregset (regcache, ®s, -1);
|
if (regnum != -1)
|
if (regnum != -1)
|
return;
|
return;
|
}
|
}
|
|
|
if (regnum == -1 || !amd64_native_gregset_supplies_p (gdbarch, regnum))
|
if (regnum == -1 || !amd64_native_gregset_supplies_p (gdbarch, regnum))
|
{
|
{
|
elf_fpregset_t fpregs;
|
elf_fpregset_t fpregs;
|
|
|
if (ptrace (PTRACE_GETFPREGS, tid, 0, (long) &fpregs) < 0)
|
if (ptrace (PTRACE_GETFPREGS, tid, 0, (long) &fpregs) < 0)
|
perror_with_name (_("Couldn't get floating point status"));
|
perror_with_name (_("Couldn't get floating point status"));
|
|
|
amd64_supply_fxsave (regcache, -1, &fpregs);
|
amd64_supply_fxsave (regcache, -1, &fpregs);
|
}
|
}
|
}
|
}
|
|
|
/* Store register REGNUM back into the child process. If REGNUM is
|
/* Store register REGNUM back into the child process. If REGNUM is
|
-1, do this for all registers (including the floating-point and SSE
|
-1, do this for all registers (including the floating-point and SSE
|
registers). */
|
registers). */
|
|
|
static void
|
static void
|
amd64_linux_store_inferior_registers (struct regcache *regcache, int regnum)
|
amd64_linux_store_inferior_registers (struct regcache *regcache, int regnum)
|
{
|
{
|
struct gdbarch *gdbarch = get_regcache_arch (regcache);
|
struct gdbarch *gdbarch = get_regcache_arch (regcache);
|
int tid;
|
int tid;
|
|
|
/* GNU/Linux LWP ID's are process ID's. */
|
/* GNU/Linux LWP ID's are process ID's. */
|
tid = TIDGET (inferior_ptid);
|
tid = TIDGET (inferior_ptid);
|
if (tid == 0)
|
if (tid == 0)
|
tid = PIDGET (inferior_ptid); /* Not a threaded program. */
|
tid = PIDGET (inferior_ptid); /* Not a threaded program. */
|
|
|
if (regnum == -1 || amd64_native_gregset_supplies_p (gdbarch, regnum))
|
if (regnum == -1 || amd64_native_gregset_supplies_p (gdbarch, regnum))
|
{
|
{
|
elf_gregset_t regs;
|
elf_gregset_t regs;
|
|
|
if (ptrace (PTRACE_GETREGS, tid, 0, (long) ®s) < 0)
|
if (ptrace (PTRACE_GETREGS, tid, 0, (long) ®s) < 0)
|
perror_with_name (_("Couldn't get registers"));
|
perror_with_name (_("Couldn't get registers"));
|
|
|
amd64_collect_native_gregset (regcache, ®s, regnum);
|
amd64_collect_native_gregset (regcache, ®s, regnum);
|
|
|
if (ptrace (PTRACE_SETREGS, tid, 0, (long) ®s) < 0)
|
if (ptrace (PTRACE_SETREGS, tid, 0, (long) ®s) < 0)
|
perror_with_name (_("Couldn't write registers"));
|
perror_with_name (_("Couldn't write registers"));
|
|
|
if (regnum != -1)
|
if (regnum != -1)
|
return;
|
return;
|
}
|
}
|
|
|
if (regnum == -1 || !amd64_native_gregset_supplies_p (gdbarch, regnum))
|
if (regnum == -1 || !amd64_native_gregset_supplies_p (gdbarch, regnum))
|
{
|
{
|
elf_fpregset_t fpregs;
|
elf_fpregset_t fpregs;
|
|
|
if (ptrace (PTRACE_GETFPREGS, tid, 0, (long) &fpregs) < 0)
|
if (ptrace (PTRACE_GETFPREGS, tid, 0, (long) &fpregs) < 0)
|
perror_with_name (_("Couldn't get floating point status"));
|
perror_with_name (_("Couldn't get floating point status"));
|
|
|
amd64_collect_fxsave (regcache, regnum, &fpregs);
|
amd64_collect_fxsave (regcache, regnum, &fpregs);
|
|
|
if (ptrace (PTRACE_SETFPREGS, tid, 0, (long) &fpregs) < 0)
|
if (ptrace (PTRACE_SETFPREGS, tid, 0, (long) &fpregs) < 0)
|
perror_with_name (_("Couldn't write floating point status"));
|
perror_with_name (_("Couldn't write floating point status"));
|
|
|
return;
|
return;
|
}
|
}
|
}
|
}
|
|
|
/* Support for debug registers. */
|
/* Support for debug registers. */
|
|
|
static unsigned long amd64_linux_dr[DR_CONTROL + 1];
|
static unsigned long amd64_linux_dr[DR_CONTROL + 1];
|
|
|
static unsigned long
|
static unsigned long
|
amd64_linux_dr_get (ptid_t ptid, int regnum)
|
amd64_linux_dr_get (ptid_t ptid, int regnum)
|
{
|
{
|
int tid;
|
int tid;
|
unsigned long value;
|
unsigned long value;
|
|
|
tid = TIDGET (ptid);
|
tid = TIDGET (ptid);
|
if (tid == 0)
|
if (tid == 0)
|
tid = PIDGET (ptid);
|
tid = PIDGET (ptid);
|
|
|
/* FIXME: kettenis/2001-03-27: Calling perror_with_name if the
|
/* FIXME: kettenis/2001-03-27: Calling perror_with_name if the
|
ptrace call fails breaks debugging remote targets. The correct
|
ptrace call fails breaks debugging remote targets. The correct
|
way to fix this is to add the hardware breakpoint and watchpoint
|
way to fix this is to add the hardware breakpoint and watchpoint
|
stuff to the target vector. For now, just return zero if the
|
stuff to the target vector. For now, just return zero if the
|
ptrace call fails. */
|
ptrace call fails. */
|
errno = 0;
|
errno = 0;
|
value = ptrace (PTRACE_PEEKUSER, tid,
|
value = ptrace (PTRACE_PEEKUSER, tid,
|
offsetof (struct user, u_debugreg[regnum]), 0);
|
offsetof (struct user, u_debugreg[regnum]), 0);
|
if (errno != 0)
|
if (errno != 0)
|
#if 0
|
#if 0
|
perror_with_name (_("Couldn't read debug register"));
|
perror_with_name (_("Couldn't read debug register"));
|
#else
|
#else
|
return 0;
|
return 0;
|
#endif
|
#endif
|
|
|
return value;
|
return value;
|
}
|
}
|
|
|
static void
|
static void
|
amd64_linux_dr_set (ptid_t ptid, int regnum, unsigned long value)
|
amd64_linux_dr_set (ptid_t ptid, int regnum, unsigned long value)
|
{
|
{
|
int tid;
|
int tid;
|
|
|
tid = TIDGET (ptid);
|
tid = TIDGET (ptid);
|
if (tid == 0)
|
if (tid == 0)
|
tid = PIDGET (ptid);
|
tid = PIDGET (ptid);
|
|
|
errno = 0;
|
errno = 0;
|
ptrace (PTRACE_POKEUSER, tid,
|
ptrace (PTRACE_POKEUSER, tid,
|
offsetof (struct user, u_debugreg[regnum]), value);
|
offsetof (struct user, u_debugreg[regnum]), value);
|
if (errno != 0)
|
if (errno != 0)
|
perror_with_name (_("Couldn't write debug register"));
|
perror_with_name (_("Couldn't write debug register"));
|
}
|
}
|
|
|
void
|
void
|
amd64_linux_dr_set_control (unsigned long control)
|
amd64_linux_dr_set_control (unsigned long control)
|
{
|
{
|
struct lwp_info *lp;
|
struct lwp_info *lp;
|
ptid_t ptid;
|
ptid_t ptid;
|
|
|
amd64_linux_dr[DR_CONTROL] = control;
|
amd64_linux_dr[DR_CONTROL] = control;
|
ALL_LWPS (lp, ptid)
|
ALL_LWPS (lp, ptid)
|
amd64_linux_dr_set (ptid, DR_CONTROL, control);
|
amd64_linux_dr_set (ptid, DR_CONTROL, control);
|
}
|
}
|
|
|
void
|
void
|
amd64_linux_dr_set_addr (int regnum, CORE_ADDR addr)
|
amd64_linux_dr_set_addr (int regnum, CORE_ADDR addr)
|
{
|
{
|
struct lwp_info *lp;
|
struct lwp_info *lp;
|
ptid_t ptid;
|
ptid_t ptid;
|
|
|
gdb_assert (regnum >= 0 && regnum <= DR_LASTADDR - DR_FIRSTADDR);
|
gdb_assert (regnum >= 0 && regnum <= DR_LASTADDR - DR_FIRSTADDR);
|
|
|
amd64_linux_dr[DR_FIRSTADDR + regnum] = addr;
|
amd64_linux_dr[DR_FIRSTADDR + regnum] = addr;
|
ALL_LWPS (lp, ptid)
|
ALL_LWPS (lp, ptid)
|
amd64_linux_dr_set (ptid, DR_FIRSTADDR + regnum, addr);
|
amd64_linux_dr_set (ptid, DR_FIRSTADDR + regnum, addr);
|
}
|
}
|
|
|
void
|
void
|
amd64_linux_dr_reset_addr (int regnum)
|
amd64_linux_dr_reset_addr (int regnum)
|
{
|
{
|
amd64_linux_dr_set_addr (regnum, 0);
|
amd64_linux_dr_set_addr (regnum, 0);
|
}
|
}
|
|
|
unsigned long
|
unsigned long
|
amd64_linux_dr_get_status (void)
|
amd64_linux_dr_get_status (void)
|
{
|
{
|
return amd64_linux_dr_get (inferior_ptid, DR_STATUS);
|
return amd64_linux_dr_get (inferior_ptid, DR_STATUS);
|
}
|
}
|
|
|
static void
|
static void
|
amd64_linux_new_thread (ptid_t ptid)
|
amd64_linux_new_thread (ptid_t ptid)
|
{
|
{
|
int i;
|
int i;
|
|
|
for (i = DR_FIRSTADDR; i <= DR_LASTADDR; i++)
|
for (i = DR_FIRSTADDR; i <= DR_LASTADDR; i++)
|
amd64_linux_dr_set (ptid, i, amd64_linux_dr[i]);
|
amd64_linux_dr_set (ptid, i, amd64_linux_dr[i]);
|
|
|
amd64_linux_dr_set (ptid, DR_CONTROL, amd64_linux_dr[DR_CONTROL]);
|
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
|
/* This function is called by libthread_db as part of its handling of
|
a request for a thread's local storage address. */
|
a request for a thread's local storage address. */
|
|
|
ps_err_e
|
ps_err_e
|
ps_get_thread_area (const struct ps_prochandle *ph,
|
ps_get_thread_area (const struct ps_prochandle *ph,
|
lwpid_t lwpid, int idx, void **base)
|
lwpid_t lwpid, int idx, void **base)
|
{
|
{
|
if (gdbarch_ptr_bit (current_gdbarch) == 32)
|
if (gdbarch_ptr_bit (current_gdbarch) == 32)
|
{
|
{
|
/* The full structure is found in <asm-i386/ldt.h>. The second
|
/* 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
|
integer is the LDT's base_address and that is used to locate
|
the thread's local storage. See i386-linux-nat.c more
|
the thread's local storage. See i386-linux-nat.c more
|
info. */
|
info. */
|
unsigned int desc[4];
|
unsigned int desc[4];
|
|
|
/* This code assumes that "int" is 32 bits and that
|
/* This code assumes that "int" is 32 bits and that
|
GET_THREAD_AREA returns no more than 4 int values. */
|
GET_THREAD_AREA returns no more than 4 int values. */
|
gdb_assert (sizeof (int) == 4);
|
gdb_assert (sizeof (int) == 4);
|
#ifndef PTRACE_GET_THREAD_AREA
|
#ifndef PTRACE_GET_THREAD_AREA
|
#define PTRACE_GET_THREAD_AREA 25
|
#define PTRACE_GET_THREAD_AREA 25
|
#endif
|
#endif
|
if (ptrace (PTRACE_GET_THREAD_AREA,
|
if (ptrace (PTRACE_GET_THREAD_AREA,
|
lwpid, (void *) (long) idx, (unsigned long) &desc) < 0)
|
lwpid, (void *) (long) idx, (unsigned long) &desc) < 0)
|
return PS_ERR;
|
return PS_ERR;
|
|
|
/* Extend the value to 64 bits. Here it's assumed that a "long"
|
/* Extend the value to 64 bits. Here it's assumed that a "long"
|
and a "void *" are the same. */
|
and a "void *" are the same. */
|
(*base) = (void *) (long) desc[1];
|
(*base) = (void *) (long) desc[1];
|
return PS_OK;
|
return PS_OK;
|
}
|
}
|
else
|
else
|
{
|
{
|
/* This definition comes from prctl.h, but some kernels may not
|
/* This definition comes from prctl.h, but some kernels may not
|
have it. */
|
have it. */
|
#ifndef PTRACE_ARCH_PRCTL
|
#ifndef PTRACE_ARCH_PRCTL
|
#define PTRACE_ARCH_PRCTL 30
|
#define PTRACE_ARCH_PRCTL 30
|
#endif
|
#endif
|
/* FIXME: ezannoni-2003-07-09 see comment above about include
|
/* FIXME: ezannoni-2003-07-09 see comment above about include
|
file order. We could be getting bogus values for these two. */
|
file order. We could be getting bogus values for these two. */
|
gdb_assert (FS < ELF_NGREG);
|
gdb_assert (FS < ELF_NGREG);
|
gdb_assert (GS < ELF_NGREG);
|
gdb_assert (GS < ELF_NGREG);
|
switch (idx)
|
switch (idx)
|
{
|
{
|
case FS:
|
case FS:
|
if (ptrace (PTRACE_ARCH_PRCTL, lwpid, base, ARCH_GET_FS) == 0)
|
if (ptrace (PTRACE_ARCH_PRCTL, lwpid, base, ARCH_GET_FS) == 0)
|
return PS_OK;
|
return PS_OK;
|
break;
|
break;
|
case GS:
|
case GS:
|
if (ptrace (PTRACE_ARCH_PRCTL, lwpid, base, ARCH_GET_GS) == 0)
|
if (ptrace (PTRACE_ARCH_PRCTL, lwpid, base, ARCH_GET_GS) == 0)
|
return PS_OK;
|
return PS_OK;
|
break;
|
break;
|
default: /* Should not happen. */
|
default: /* Should not happen. */
|
return PS_BADADDR;
|
return PS_BADADDR;
|
}
|
}
|
}
|
}
|
return PS_ERR; /* ptrace failed. */
|
return PS_ERR; /* ptrace failed. */
|
}
|
}
|
|
|
|
|
static void (*super_post_startup_inferior) (ptid_t ptid);
|
static void (*super_post_startup_inferior) (ptid_t ptid);
|
|
|
static void
|
static void
|
amd64_linux_child_post_startup_inferior (ptid_t ptid)
|
amd64_linux_child_post_startup_inferior (ptid_t ptid)
|
{
|
{
|
i386_cleanup_dregs ();
|
i386_cleanup_dregs ();
|
super_post_startup_inferior (ptid);
|
super_post_startup_inferior (ptid);
|
}
|
}
|
|
|
|
|
/* Provide a prototype to silence -Wmissing-prototypes. */
|
/* Provide a prototype to silence -Wmissing-prototypes. */
|
void _initialize_amd64_linux_nat (void);
|
void _initialize_amd64_linux_nat (void);
|
|
|
void
|
void
|
_initialize_amd64_linux_nat (void)
|
_initialize_amd64_linux_nat (void)
|
{
|
{
|
struct target_ops *t;
|
struct target_ops *t;
|
|
|
amd64_native_gregset32_reg_offset = amd64_linux_gregset32_reg_offset;
|
amd64_native_gregset32_reg_offset = amd64_linux_gregset32_reg_offset;
|
amd64_native_gregset32_num_regs = I386_LINUX_NUM_REGS;
|
amd64_native_gregset32_num_regs = I386_LINUX_NUM_REGS;
|
amd64_native_gregset64_reg_offset = amd64_linux_gregset64_reg_offset;
|
amd64_native_gregset64_reg_offset = amd64_linux_gregset64_reg_offset;
|
amd64_native_gregset64_num_regs = AMD64_LINUX_NUM_REGS;
|
amd64_native_gregset64_num_regs = AMD64_LINUX_NUM_REGS;
|
|
|
gdb_assert (ARRAY_SIZE (amd64_linux_gregset32_reg_offset)
|
gdb_assert (ARRAY_SIZE (amd64_linux_gregset32_reg_offset)
|
== amd64_native_gregset32_num_regs);
|
== amd64_native_gregset32_num_regs);
|
gdb_assert (ARRAY_SIZE (amd64_linux_gregset64_reg_offset)
|
gdb_assert (ARRAY_SIZE (amd64_linux_gregset64_reg_offset)
|
== amd64_native_gregset64_num_regs);
|
== amd64_native_gregset64_num_regs);
|
|
|
/* Fill in the generic GNU/Linux methods. */
|
/* Fill in the generic GNU/Linux methods. */
|
t = linux_target ();
|
t = linux_target ();
|
|
|
/* Override the GNU/Linux inferior startup hook. */
|
/* Override the GNU/Linux inferior startup hook. */
|
super_post_startup_inferior = t->to_post_startup_inferior;
|
super_post_startup_inferior = t->to_post_startup_inferior;
|
t->to_post_startup_inferior = amd64_linux_child_post_startup_inferior;
|
t->to_post_startup_inferior = amd64_linux_child_post_startup_inferior;
|
|
|
/* Add our register access methods. */
|
/* Add our register access methods. */
|
t->to_fetch_registers = amd64_linux_fetch_inferior_registers;
|
t->to_fetch_registers = amd64_linux_fetch_inferior_registers;
|
t->to_store_registers = amd64_linux_store_inferior_registers;
|
t->to_store_registers = amd64_linux_store_inferior_registers;
|
|
|
/* Register the target. */
|
/* Register the target. */
|
linux_nat_add_target (t);
|
linux_nat_add_target (t);
|
linux_nat_set_new_thread (t, amd64_linux_new_thread);
|
linux_nat_set_new_thread (t, amd64_linux_new_thread);
|
}
|
}
|
|
|
