* defs.h (extract_signed_integer, extract_unsigned_integer,

[deliverable/binutils-gdb.git] / gdb / i386-linux-tdep.c

diff --git a/gdb/i386-linux-tdep.c b/gdb/i386-linux-tdep.c
index 2733b5f4df5e736b76a351a331546505299e5940..7928299a442b4536114b2f1f12ec310b48c5f5d7 100644 (file)
--- a/gdb/i386-linux-tdep.c
+++ b/gdb/i386-linux-tdep.c
@@ -1,12 +1,13 @@
 /* Target-dependent code for GNU/Linux i386.
 
 /* Target-dependent code for GNU/Linux i386.
 

-   Copyright 2000, 2001, 2002, 2003, 2004 Free Software Foundation, Inc.
+   Copyright (C) 2000, 2001, 2002, 2003, 2004, 2005, 2007, 2008, 2009
+   Free Software Foundation, Inc.

 
    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
 
    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 2 of the License, or
+   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,
    (at your option) any later version.
 
    This program is distributed in the hope that it will be useful,


@@ -15,9 +16,7 @@
    GNU General Public License for more details.
 
    You should have received a copy of the GNU General Public License
    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, write to the Free Software
-   Foundation, Inc., 59 Temple Place - Suite 330,
-   Boston, MA 02111-1307, USA.  */
+   along with this program.  If not, see <http://www.gnu.org/licenses/>.  */

 
 #include "defs.h"
 #include "gdbcore.h"
 
 #include "defs.h"
 #include "gdbcore.h"


@@ -27,24 +26,41 @@
 #include "inferior.h"
 #include "osabi.h"
 #include "reggroups.h"
 #include "inferior.h"
 #include "osabi.h"
 #include "reggroups.h"

-
+#include "dwarf2-frame.h"

 #include "gdb_string.h"
 
 #include "i386-tdep.h"
 #include "i386-linux-tdep.h"
 #include "gdb_string.h"
 
 #include "i386-tdep.h"
 #include "i386-linux-tdep.h"

+#include "linux-tdep.h"

 #include "glibc-tdep.h"
 #include "solib-svr4.h"
 #include "glibc-tdep.h"
 #include "solib-svr4.h"

+#include "symtab.h"
+#include "arch-utils.h"
+#include "regset.h"
+
+#include "record.h"
+#include "linux-record.h"
+#include <stdint.h>
+
+/* Supported register note sections.  */
+static struct core_regset_section i386_linux_regset_sections[] =
+{
+  { ".reg", 144 },
+  { ".reg2", 108 },
+  { ".reg-xfp", 512 },
+  { NULL, 0 }
+};

 
 /* Return the name of register REG.  */
 
 static const char *
 
 /* Return the name of register REG.  */
 
 static const char *

-i386_linux_register_name (int reg)
+i386_linux_register_name (struct gdbarch *gdbarch, int reg)

 {
   /* Deal with the extra "orig_eax" pseudo register.  */
   if (reg == I386_LINUX_ORIG_EAX_REGNUM)
     return "orig_eax";
 
 {
   /* Deal with the extra "orig_eax" pseudo register.  */
   if (reg == I386_LINUX_ORIG_EAX_REGNUM)
     return "orig_eax";
 

-  return i386_register_name (reg);
+  return i386_register_name (gdbarch, reg);

 }
 
 /* Return non-zero, when the register is in the corresponding register
 }
 
 /* Return non-zero, when the register is in the corresponding register


@@ -106,7 +122,7 @@ i386_linux_register_reggroup_p (struct gdbarch *gdbarch, int regnum,
 #define LINUX_SIGTRAMP_INSN2   0xcd    /* int */
 #define LINUX_SIGTRAMP_OFFSET2 6
 
 #define LINUX_SIGTRAMP_INSN2   0xcd    /* int */
 #define LINUX_SIGTRAMP_OFFSET2 6
 

-static const unsigned char linux_sigtramp_code[] =
+static const gdb_byte linux_sigtramp_code[] =

 {
   LINUX_SIGTRAMP_INSN0,                                        /* pop %eax */
   LINUX_SIGTRAMP_INSN1, 0x77, 0x00, 0x00, 0x00,                /* mov $0x77, %eax */
 {
   LINUX_SIGTRAMP_INSN0,                                        /* pop %eax */
   LINUX_SIGTRAMP_INSN1, 0x77, 0x00, 0x00, 0x00,                /* mov $0x77, %eax */


@@ -115,13 +131,14 @@ static const unsigned char linux_sigtramp_code[] =
 
 #define LINUX_SIGTRAMP_LEN (sizeof linux_sigtramp_code)
 
 
 #define LINUX_SIGTRAMP_LEN (sizeof linux_sigtramp_code)
 

-/* If PC is in a sigtramp routine, return the address of the start of
-   the routine.  Otherwise, return 0.  */
+/* If THIS_FRAME is a sigtramp routine, return the address of the
+   start of the routine.  Otherwise, return 0.  */

 
 static CORE_ADDR
 
 static CORE_ADDR

-i386_linux_sigtramp_start (CORE_ADDR pc)
+i386_linux_sigtramp_start (struct frame_info *this_frame)

 {
 {

-  unsigned char buf[LINUX_SIGTRAMP_LEN];
+  CORE_ADDR pc = get_frame_pc (this_frame);
+  gdb_byte buf[LINUX_SIGTRAMP_LEN];

 
   /* We only recognize a signal trampoline if PC is at the start of
      one of the three instructions.  We optimize for finding the PC at
 
   /* We only recognize a signal trampoline if PC is at the start of
      one of the three instructions.  We optimize for finding the PC at


@@ -130,7 +147,7 @@ i386_linux_sigtramp_start (CORE_ADDR pc)
      PC is not at the start of the instruction sequence, there will be
      a few trailing readable bytes on the stack.  */
 
      PC is not at the start of the instruction sequence, there will be
      a few trailing readable bytes on the stack.  */
 

-  if (deprecated_read_memory_nobpt (pc, (char *) buf, LINUX_SIGTRAMP_LEN) != 0)
+  if (!safe_frame_unwind_memory (this_frame, pc, buf, LINUX_SIGTRAMP_LEN))

     return 0;
 
   if (buf[0] != LINUX_SIGTRAMP_INSN0)
     return 0;
 
   if (buf[0] != LINUX_SIGTRAMP_INSN0)


@@ -151,7 +168,7 @@ i386_linux_sigtramp_start (CORE_ADDR pc)
 
       pc -= adjust;
 
 
       pc -= adjust;
 

-      if (deprecated_read_memory_nobpt (pc, (char *) buf, LINUX_SIGTRAMP_LEN) != 0)
+      if (!safe_frame_unwind_memory (this_frame, pc, buf, LINUX_SIGTRAMP_LEN))

        return 0;
     }
 
        return 0;
     }
 


@@ -174,7 +191,7 @@ i386_linux_sigtramp_start (CORE_ADDR pc)
 #define LINUX_RT_SIGTRAMP_INSN1                0xcd /* int */
 #define LINUX_RT_SIGTRAMP_OFFSET1      5
 
 #define LINUX_RT_SIGTRAMP_INSN1                0xcd /* int */
 #define LINUX_RT_SIGTRAMP_OFFSET1      5
 

-static const unsigned char linux_rt_sigtramp_code[] =
+static const gdb_byte linux_rt_sigtramp_code[] =

 {
   LINUX_RT_SIGTRAMP_INSN0, 0xad, 0x00, 0x00, 0x00,     /* mov $0xad, %eax */
   LINUX_RT_SIGTRAMP_INSN1, 0x80                                /* int $0x80 */
 {
   LINUX_RT_SIGTRAMP_INSN0, 0xad, 0x00, 0x00, 0x00,     /* mov $0xad, %eax */
   LINUX_RT_SIGTRAMP_INSN1, 0x80                                /* int $0x80 */


@@ -182,13 +199,14 @@ static const unsigned char linux_rt_sigtramp_code[] =
 
 #define LINUX_RT_SIGTRAMP_LEN (sizeof linux_rt_sigtramp_code)
 
 
 #define LINUX_RT_SIGTRAMP_LEN (sizeof linux_rt_sigtramp_code)
 

-/* If PC is in a RT sigtramp routine, return the address of the start
-   of the routine.  Otherwise, return 0.  */
+/* If THIS_FRAME is an RT sigtramp routine, return the address of the
+   start of the routine.  Otherwise, return 0.  */

 
 static CORE_ADDR
 
 static CORE_ADDR

-i386_linux_rt_sigtramp_start (CORE_ADDR pc)
+i386_linux_rt_sigtramp_start (struct frame_info *this_frame)

 {
 {

-  unsigned char buf[LINUX_RT_SIGTRAMP_LEN];
+  CORE_ADDR pc = get_frame_pc (this_frame);
+  gdb_byte buf[LINUX_RT_SIGTRAMP_LEN];

 
   /* We only recognize a signal trampoline if PC is at the start of
      one of the two instructions.  We optimize for finding the PC at
 
   /* We only recognize a signal trampoline if PC is at the start of
      one of the two instructions.  We optimize for finding the PC at


@@ -197,7 +215,7 @@ i386_linux_rt_sigtramp_start (CORE_ADDR pc)
      PC is not at the start of the instruction sequence, there will be
      a few trailing readable bytes on the stack.  */
 
      PC is not at the start of the instruction sequence, there will be
      a few trailing readable bytes on the stack.  */
 

-  if (deprecated_read_memory_nobpt (pc, (char *) buf, LINUX_RT_SIGTRAMP_LEN) != 0)
+  if (!safe_frame_unwind_memory (this_frame, pc, buf, LINUX_RT_SIGTRAMP_LEN))

     return 0;
 
   if (buf[0] != LINUX_RT_SIGTRAMP_INSN0)
     return 0;
 
   if (buf[0] != LINUX_RT_SIGTRAMP_INSN0)


@@ -207,7 +225,8 @@ i386_linux_rt_sigtramp_start (CORE_ADDR pc)
 
       pc -= LINUX_RT_SIGTRAMP_OFFSET1;
 
 
       pc -= LINUX_RT_SIGTRAMP_OFFSET1;
 

-      if (deprecated_read_memory_nobpt (pc, (char *) buf, LINUX_RT_SIGTRAMP_LEN) != 0)
+      if (!safe_frame_unwind_memory (this_frame, pc, buf,
+                                    LINUX_RT_SIGTRAMP_LEN))

        return 0;
     }
 
        return 0;
     }
 


@@ -217,13 +236,13 @@ i386_linux_rt_sigtramp_start (CORE_ADDR pc)
   return pc;
 }
 
   return pc;
 }
 

-/* Return whether the frame preceding NEXT_FRAME corresponds to a
-   GNU/Linux sigtramp routine.  */
+/* Return whether THIS_FRAME corresponds to a GNU/Linux sigtramp
+   routine.  */

 
 static int
 
 static int

-i386_linux_sigtramp_p (struct frame_info *next_frame)
+i386_linux_sigtramp_p (struct frame_info *this_frame)

 {
 {

-  CORE_ADDR pc = frame_pc_unwind (next_frame);
+  CORE_ADDR pc = get_frame_pc (this_frame);

   char *name;
 
   find_pc_partial_function (pc, &name, NULL, NULL);
   char *name;
 
   find_pc_partial_function (pc, &name, NULL, NULL);


@@ -234,30 +253,53 @@ i386_linux_sigtramp_p (struct frame_info *next_frame)
      be part of the preceding function.  This should always be sigaction,
      __sigaction, or __libc_sigaction (all aliases to the same function).  */
   if (name == NULL || strstr (name, "sigaction") != NULL)
      be part of the preceding function.  This should always be sigaction,
      __sigaction, or __libc_sigaction (all aliases to the same function).  */
   if (name == NULL || strstr (name, "sigaction") != NULL)

-    return (i386_linux_sigtramp_start (pc) != 0
-           || i386_linux_rt_sigtramp_start (pc) != 0);
+    return (i386_linux_sigtramp_start (this_frame) != 0
+           || i386_linux_rt_sigtramp_start (this_frame) != 0);

 
   return (strcmp ("__restore", name) == 0
          || strcmp ("__restore_rt", name) == 0);
 }
 
 
   return (strcmp ("__restore", name) == 0
          || strcmp ("__restore_rt", name) == 0);
 }
 

+/* Return one if the PC of THIS_FRAME is in a signal trampoline which
+   may have DWARF-2 CFI.  */
+
+static int
+i386_linux_dwarf_signal_frame_p (struct gdbarch *gdbarch,
+                                struct frame_info *this_frame)
+{
+  CORE_ADDR pc = get_frame_pc (this_frame);
+  char *name;
+
+  find_pc_partial_function (pc, &name, NULL, NULL);
+
+  /* If a vsyscall DSO is in use, the signal trampolines may have these
+     names.  */
+  if (name && (strcmp (name, "__kernel_sigreturn") == 0
+              || strcmp (name, "__kernel_rt_sigreturn") == 0))
+    return 1;
+
+  return 0;
+}
+

 /* Offset to struct sigcontext in ucontext, from <asm/ucontext.h>.  */
 #define I386_LINUX_UCONTEXT_SIGCONTEXT_OFFSET 20
 
 /* Offset to struct sigcontext in ucontext, from <asm/ucontext.h>.  */
 #define I386_LINUX_UCONTEXT_SIGCONTEXT_OFFSET 20
 

-/* Assuming NEXT_FRAME is a frame following a GNU/Linux sigtramp
-   routine, return the address of the associated sigcontext structure.  */
+/* Assuming THIS_FRAME is a GNU/Linux sigtramp routine, return the
+   address of the associated sigcontext structure.  */

 
 static CORE_ADDR
 
 static CORE_ADDR

-i386_linux_sigcontext_addr (struct frame_info *next_frame)
+i386_linux_sigcontext_addr (struct frame_info *this_frame)

 {
 {

+  struct gdbarch *gdbarch = get_frame_arch (this_frame);
+  enum bfd_endian byte_order = gdbarch_byte_order (gdbarch);

   CORE_ADDR pc;
   CORE_ADDR sp;
   CORE_ADDR pc;
   CORE_ADDR sp;

-  char buf[4];
+  gdb_byte buf[4];

 
 

-  frame_unwind_register (next_frame, I386_ESP_REGNUM, buf);
-  sp = extract_unsigned_integer (buf, 4);
+  get_frame_register (this_frame, I386_ESP_REGNUM, buf);
+  sp = extract_unsigned_integer (buf, 4, byte_order);

 
 

-  pc = i386_linux_sigtramp_start (frame_pc_unwind (next_frame));
+  pc = i386_linux_sigtramp_start (this_frame);

   if (pc)
     {
       /* The sigcontext structure lives on the stack, right after
   if (pc)
     {
       /* The sigcontext structure lives on the stack, right after


@@ -266,12 +308,12 @@ i386_linux_sigcontext_addr (struct frame_info *next_frame)
         pointer.  Keep in mind that the first instruction of the
         sigtramp code is "pop %eax".  If the PC is after this
         instruction, adjust the returned value accordingly.  */
         pointer.  Keep in mind that the first instruction of the
         sigtramp code is "pop %eax".  If the PC is after this
         instruction, adjust the returned value accordingly.  */

-      if (pc == frame_pc_unwind (next_frame))
+      if (pc == get_frame_pc (this_frame))

        return sp + 4;
       return sp;
     }
 
        return sp + 4;
       return sp;
     }
 

-  pc = i386_linux_rt_sigtramp_start (frame_pc_unwind (next_frame));
+  pc = i386_linux_rt_sigtramp_start (this_frame);

   if (pc)
     {
       CORE_ADDR ucontext_addr;
   if (pc)
     {
       CORE_ADDR ucontext_addr;


@@ -280,20 +322,20 @@ i386_linux_sigcontext_addr (struct frame_info *next_frame)
         pointer to the user context is passed as the third argument
         to the signal handler.  */
       read_memory (sp + 8, buf, 4);
         pointer to the user context is passed as the third argument
         to the signal handler.  */
       read_memory (sp + 8, buf, 4);

-      ucontext_addr = extract_unsigned_integer (buf, 4);
+      ucontext_addr = extract_unsigned_integer (buf, 4, byte_order);

       return ucontext_addr + I386_LINUX_UCONTEXT_SIGCONTEXT_OFFSET;
     }
 
       return ucontext_addr + I386_LINUX_UCONTEXT_SIGCONTEXT_OFFSET;
     }
 

-  error ("Couldn't recognize signal trampoline.");
+  error (_("Couldn't recognize signal trampoline."));

   return 0;
 }
 
 /* Set the program counter for process PTID to PC.  */
 
 static void
   return 0;
 }
 
 /* Set the program counter for process PTID to PC.  */
 
 static void

-i386_linux_write_pc (CORE_ADDR pc, ptid_t ptid)
+i386_linux_write_pc (struct regcache *regcache, CORE_ADDR pc)

 {
 {

-  write_register_pid (I386_EIP_REGNUM, pc, ptid);
+  regcache_cooked_write_unsigned (regcache, I386_EIP_REGNUM, pc);

 
   /* We must be careful with modifying the program counter.  If we
      just interrupted a system call, the kernel might try to restart
 
   /* We must be careful with modifying the program counter.  If we
      just interrupted a system call, the kernel might try to restart


@@ -309,7 +351,36 @@ i386_linux_write_pc (CORE_ADDR pc, ptid_t ptid)
      when we resume the inferior on return from a function call from
      within GDB.  In all other cases the system call will not be
      restarted.  */
      when we resume the inferior on return from a function call from
      within GDB.  In all other cases the system call will not be
      restarted.  */

-  write_register_pid (I386_LINUX_ORIG_EAX_REGNUM, -1, ptid);
+  regcache_cooked_write_unsigned (regcache, I386_LINUX_ORIG_EAX_REGNUM, -1);
+}
+
+/* Parse the arguments of current system call instruction and record
+   the values of the registers and memory that will be changed into
+   "record_arch_list".  This instruction is "int 0x80" (Linux
+   Kernel2.4) or "sysenter" (Linux Kernel 2.6).
+
+   Return -1 if something wrong.  */
+
+static struct linux_record_tdep i386_linux_record_tdep;
+
+static int
+i386_linux_intx80_sysenter_record (struct regcache *regcache)
+{
+  int ret;
+  uint32_t tmpu32;
+
+  regcache_raw_read (regcache, I386_EAX_REGNUM, (gdb_byte *)&tmpu32);
+
+  ret = record_linux_system_call (tmpu32, regcache,
+                                 &i386_linux_record_tdep);
+  if (ret)
+    return ret;
+
+  /* Record the return value of the system call.  */
+  if (record_arch_list_add_reg (regcache, I386_EAX_REGNUM))
+    return -1;
+
+  return 0;

 }
 \f
 
 }
 \f
 


@@ -405,12 +476,192 @@ i386_linux_init_abi (struct gdbarch_info info, struct gdbarch *gdbarch)
   tdep->sc_reg_offset = i386_linux_sc_reg_offset;
   tdep->sc_num_regs = ARRAY_SIZE (i386_linux_sc_reg_offset);
 
   tdep->sc_reg_offset = i386_linux_sc_reg_offset;
   tdep->sc_num_regs = ARRAY_SIZE (i386_linux_sc_reg_offset);
 

+  set_gdbarch_process_record (gdbarch, i386_process_record);
+
+  /* Initialize the i386_linux_record_tdep.  */
+  /* These values are the size of the type that will be used in a system
+     call.  They are obtained from Linux Kernel source.  */
+  i386_linux_record_tdep.size__old_kernel_stat = 32;
+  i386_linux_record_tdep.size_tms = 16;
+  i386_linux_record_tdep.size_loff_t = 8;
+  i386_linux_record_tdep.size_flock = 16;
+  i386_linux_record_tdep.size_oldold_utsname = 45;
+  i386_linux_record_tdep.size_ustat = 20;
+  i386_linux_record_tdep.size_old_sigaction = 140;
+  i386_linux_record_tdep.size_old_sigset_t = 128;
+  i386_linux_record_tdep.size_rlimit = 8;
+  i386_linux_record_tdep.size_rusage = 72;
+  i386_linux_record_tdep.size_timeval = 8;
+  i386_linux_record_tdep.size_timezone = 8;
+  i386_linux_record_tdep.size_old_gid_t = 2;
+  i386_linux_record_tdep.size_old_uid_t = 2;
+  i386_linux_record_tdep.size_fd_set = 128;
+  i386_linux_record_tdep.size_dirent = 268;
+  i386_linux_record_tdep.size_dirent64 = 276;
+  i386_linux_record_tdep.size_statfs = 64;
+  i386_linux_record_tdep.size_statfs64 = 84;
+  i386_linux_record_tdep.size_sockaddr = 16;
+  i386_linux_record_tdep.size_int = 4;
+  i386_linux_record_tdep.size_long = 4;
+  i386_linux_record_tdep.size_ulong = 4;
+  i386_linux_record_tdep.size_msghdr = 28;
+  i386_linux_record_tdep.size_itimerval = 16;
+  i386_linux_record_tdep.size_stat = 88;
+  i386_linux_record_tdep.size_old_utsname = 325;
+  i386_linux_record_tdep.size_sysinfo = 64;
+  i386_linux_record_tdep.size_msqid_ds = 88;
+  i386_linux_record_tdep.size_shmid_ds = 84;
+  i386_linux_record_tdep.size_new_utsname = 390;
+  i386_linux_record_tdep.size_timex = 128;
+  i386_linux_record_tdep.size_mem_dqinfo = 24;
+  i386_linux_record_tdep.size_if_dqblk = 68;
+  i386_linux_record_tdep.size_fs_quota_stat = 68;
+  i386_linux_record_tdep.size_timespec = 8;
+  i386_linux_record_tdep.size_pollfd = 8;
+  i386_linux_record_tdep.size_NFS_FHSIZE = 32;
+  i386_linux_record_tdep.size_knfsd_fh = 132;
+  i386_linux_record_tdep.size_TASK_COMM_LEN = 16;
+  i386_linux_record_tdep.size_sigaction = 140;
+  i386_linux_record_tdep.size_sigset_t = 8;
+  i386_linux_record_tdep.size_siginfo_t = 128;
+  i386_linux_record_tdep.size_cap_user_data_t = 12;
+  i386_linux_record_tdep.size_stack_t = 12;
+  i386_linux_record_tdep.size_off_t = i386_linux_record_tdep.size_long;
+  i386_linux_record_tdep.size_stat64 = 96;
+  i386_linux_record_tdep.size_gid_t = 2;
+  i386_linux_record_tdep.size_uid_t = 2;
+  i386_linux_record_tdep.size_PAGE_SIZE = 4096;
+  i386_linux_record_tdep.size_flock64 = 24;
+  i386_linux_record_tdep.size_user_desc = 16;
+  i386_linux_record_tdep.size_io_event = 32;
+  i386_linux_record_tdep.size_iocb = 64;
+  i386_linux_record_tdep.size_epoll_event = 12;
+  i386_linux_record_tdep.size_itimerspec = i386_linux_record_tdep.size_timespec * 2;
+  i386_linux_record_tdep.size_mq_attr = 32;
+  i386_linux_record_tdep.size_siginfo = 128;
+  i386_linux_record_tdep.size_termios = 36;
+  i386_linux_record_tdep.size_termios2 = 44;
+  i386_linux_record_tdep.size_pid_t = 4;
+  i386_linux_record_tdep.size_winsize = 8;
+  i386_linux_record_tdep.size_serial_struct = 60;
+  i386_linux_record_tdep.size_serial_icounter_struct = 80;
+  i386_linux_record_tdep.size_hayes_esp_config = 12;
+
+  /* These values are the second argument of system call "sys_ioctl".
+     They are obtained from Linux Kernel source.  */
+  i386_linux_record_tdep.ioctl_TCGETS = 0x5401;
+  i386_linux_record_tdep.ioctl_TCSETS = 0x5402;
+  i386_linux_record_tdep.ioctl_TCSETSW = 0x5403;
+  i386_linux_record_tdep.ioctl_TCSETSF = 0x5404;
+  i386_linux_record_tdep.ioctl_TCGETA = 0x5405;
+  i386_linux_record_tdep.ioctl_TCSETA = 0x5406;
+  i386_linux_record_tdep.ioctl_TCSETAW = 0x5407;
+  i386_linux_record_tdep.ioctl_TCSETAF = 0x5408;
+  i386_linux_record_tdep.ioctl_TCSBRK = 0x5409;
+  i386_linux_record_tdep.ioctl_TCXONC = 0x540A;
+  i386_linux_record_tdep.ioctl_TCFLSH = 0x540B;
+  i386_linux_record_tdep.ioctl_TIOCEXCL = 0x540C;
+  i386_linux_record_tdep.ioctl_TIOCNXCL = 0x540D;
+  i386_linux_record_tdep.ioctl_TIOCSCTTY = 0x540E;
+  i386_linux_record_tdep.ioctl_TIOCGPGRP = 0x540F;
+  i386_linux_record_tdep.ioctl_TIOCSPGRP = 0x5410;
+  i386_linux_record_tdep.ioctl_TIOCOUTQ = 0x5411;
+  i386_linux_record_tdep.ioctl_TIOCSTI = 0x5412;
+  i386_linux_record_tdep.ioctl_TIOCGWINSZ = 0x5413;
+  i386_linux_record_tdep.ioctl_TIOCSWINSZ = 0x5414;
+  i386_linux_record_tdep.ioctl_TIOCMGET = 0x5415;
+  i386_linux_record_tdep.ioctl_TIOCMBIS = 0x5416;
+  i386_linux_record_tdep.ioctl_TIOCMBIC = 0x5417;
+  i386_linux_record_tdep.ioctl_TIOCMSET = 0x5418;
+  i386_linux_record_tdep.ioctl_TIOCGSOFTCAR = 0x5419;
+  i386_linux_record_tdep.ioctl_TIOCSSOFTCAR = 0x541A;
+  i386_linux_record_tdep.ioctl_FIONREAD = 0x541B;
+  i386_linux_record_tdep.ioctl_TIOCINQ = i386_linux_record_tdep.ioctl_FIONREAD;
+  i386_linux_record_tdep.ioctl_TIOCLINUX = 0x541C;
+  i386_linux_record_tdep.ioctl_TIOCCONS = 0x541D;
+  i386_linux_record_tdep.ioctl_TIOCGSERIAL = 0x541E;
+  i386_linux_record_tdep.ioctl_TIOCSSERIAL = 0x541F;
+  i386_linux_record_tdep.ioctl_TIOCPKT = 0x5420;
+  i386_linux_record_tdep.ioctl_FIONBIO = 0x5421;
+  i386_linux_record_tdep.ioctl_TIOCNOTTY = 0x5422;
+  i386_linux_record_tdep.ioctl_TIOCSETD = 0x5423;
+  i386_linux_record_tdep.ioctl_TIOCGETD = 0x5424;
+  i386_linux_record_tdep.ioctl_TCSBRKP = 0x5425;
+  i386_linux_record_tdep.ioctl_TIOCTTYGSTRUCT = 0x5426;
+  i386_linux_record_tdep.ioctl_TIOCSBRK = 0x5427;
+  i386_linux_record_tdep.ioctl_TIOCCBRK = 0x5428;
+  i386_linux_record_tdep.ioctl_TIOCGSID = 0x5429;
+  i386_linux_record_tdep.ioctl_TCGETS2 = 0x802c542a;
+  i386_linux_record_tdep.ioctl_TCSETS2 = 0x402c542b;
+  i386_linux_record_tdep.ioctl_TCSETSW2 = 0x402c542c;
+  i386_linux_record_tdep.ioctl_TCSETSF2 = 0x402c542d;
+  i386_linux_record_tdep.ioctl_TIOCGPTN = 0x80045430;
+  i386_linux_record_tdep.ioctl_TIOCSPTLCK = 0x40045431;
+  i386_linux_record_tdep.ioctl_FIONCLEX = 0x5450;
+  i386_linux_record_tdep.ioctl_FIOCLEX = 0x5451;
+  i386_linux_record_tdep.ioctl_FIOASYNC = 0x5452;
+  i386_linux_record_tdep.ioctl_TIOCSERCONFIG = 0x5453;
+  i386_linux_record_tdep.ioctl_TIOCSERGWILD = 0x5454;
+  i386_linux_record_tdep.ioctl_TIOCSERSWILD = 0x5455;
+  i386_linux_record_tdep.ioctl_TIOCGLCKTRMIOS = 0x5456;
+  i386_linux_record_tdep.ioctl_TIOCSLCKTRMIOS = 0x5457;
+  i386_linux_record_tdep.ioctl_TIOCSERGSTRUCT = 0x5458;
+  i386_linux_record_tdep.ioctl_TIOCSERGETLSR = 0x5459;
+  i386_linux_record_tdep.ioctl_TIOCSERGETMULTI = 0x545A;
+  i386_linux_record_tdep.ioctl_TIOCSERSETMULTI = 0x545B;
+  i386_linux_record_tdep.ioctl_TIOCMIWAIT = 0x545C;
+  i386_linux_record_tdep.ioctl_TIOCGICOUNT = 0x545D;
+  i386_linux_record_tdep.ioctl_TIOCGHAYESESP = 0x545E;
+  i386_linux_record_tdep.ioctl_TIOCSHAYESESP = 0x545F;
+  i386_linux_record_tdep.ioctl_FIOQSIZE = 0x5460;
+
+  /* These values are the second argument of system call "sys_fcntl"
+     and "sys_fcntl64".  They are obtained from Linux Kernel source.  */
+  i386_linux_record_tdep.fcntl_F_GETLK = 5;
+  i386_linux_record_tdep.fcntl_F_GETLK64 = 12;
+  i386_linux_record_tdep.fcntl_F_SETLK64 = 13;
+  i386_linux_record_tdep.fcntl_F_SETLKW64 = 14;
+
+  i386_linux_record_tdep.arg1 = I386_EBX_REGNUM;
+  i386_linux_record_tdep.arg2 = I386_ECX_REGNUM;
+  i386_linux_record_tdep.arg3 = I386_EDX_REGNUM;
+  i386_linux_record_tdep.arg4 = I386_ESI_REGNUM;
+  i386_linux_record_tdep.arg5 = I386_EDI_REGNUM;
+
+  tdep->i386_intx80_record = i386_linux_intx80_sysenter_record;
+  tdep->i386_sysenter_record = i386_linux_intx80_sysenter_record;
+
+  /* N_FUN symbols in shared libaries have 0 for their values and need
+     to be relocated. */
+  set_gdbarch_sofun_address_maybe_missing (gdbarch, 1);
+

   /* GNU/Linux uses SVR4-style shared libraries.  */
   /* GNU/Linux uses SVR4-style shared libraries.  */

+  set_gdbarch_skip_trampoline_code (gdbarch, find_solib_trampoline_target);

   set_solib_svr4_fetch_link_map_offsets
     (gdbarch, svr4_ilp32_fetch_link_map_offsets);
 
   /* GNU/Linux uses the dynamic linker included in the GNU C Library.  */
   set_gdbarch_skip_solib_resolver (gdbarch, glibc_skip_solib_resolver);
   set_solib_svr4_fetch_link_map_offsets
     (gdbarch, svr4_ilp32_fetch_link_map_offsets);
 
   /* GNU/Linux uses the dynamic linker included in the GNU C Library.  */
   set_gdbarch_skip_solib_resolver (gdbarch, glibc_skip_solib_resolver);

+
+  dwarf2_frame_set_signal_frame_p (gdbarch, i386_linux_dwarf_signal_frame_p);
+
+  /* Enable TLS support.  */
+  set_gdbarch_fetch_tls_load_module_address (gdbarch,
+                                             svr4_fetch_objfile_link_map);
+
+  /* Install supported register note sections.  */
+  set_gdbarch_core_regset_sections (gdbarch, i386_linux_regset_sections);
+
+  /* Displaced stepping.  */
+  set_gdbarch_displaced_step_copy_insn (gdbarch,
+                                        simple_displaced_step_copy_insn);
+  set_gdbarch_displaced_step_fixup (gdbarch, i386_displaced_step_fixup);
+  set_gdbarch_displaced_step_free_closure (gdbarch,
+                                           simple_displaced_step_free_closure);
+  set_gdbarch_displaced_step_location (gdbarch,
+                                       displaced_step_at_entry_point);
+
+  set_gdbarch_get_siginfo_type (gdbarch, linux_get_siginfo_type);

 }
 
 /* Provide a prototype to silence -Wmissing-prototypes.  */
 }
 
 /* Provide a prototype to silence -Wmissing-prototypes.  */