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[/] [or1k/] [tags/] [start/] [insight/] [gdb/] [arm-linux-nat.c] - Blame information for rev 1765

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/* GNU/Linux on ARM native support.
   Copyright 1999, 2000, 2001 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
   the Free Software Foundation; either version 2 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, write to the Free Software
   Foundation, Inc., 59 Temple Place - Suite 330,
   Boston, MA 02111-1307, USA.  */
 
#include "defs.h"
#include "inferior.h"
#include "gdbcore.h"
#include "gdb_string.h"
#include "regcache.h"
 
#include <sys/user.h>
#include <sys/ptrace.h>
#include <sys/utsname.h>
#include <sys/procfs.h>
 
/* Prototypes for supply_gregset etc. */
#include "gregset.h"
 
extern int arm_apcs_32;
 
#define         typeNone                0x00
#define         typeSingle              0x01
#define         typeDouble              0x02
#define         typeExtended            0x03
#define         FPWORDS                 28
#define         CPSR_REGNUM             16
 
typedef union tagFPREG
  {
    unsigned int fSingle;
    unsigned int fDouble[2];
    unsigned int fExtended[3];
  }
FPREG;
 
typedef struct tagFPA11
  {
    FPREG fpreg[8];             /* 8 floating point registers */
    unsigned int fpsr;          /* floating point status register */
    unsigned int fpcr;          /* floating point control register */
    unsigned char fType[8];     /* type of floating point value held in
                                   floating point registers.  */
    int initflag;               /* NWFPE initialization flag.  */
  }
FPA11;
 
/* The following variables are used to determine the version of the
   underlying Linux operating system.  Examples:
 
   Linux 2.0.35                 Linux 2.2.12
   os_version = 0x00020023      os_version = 0x0002020c
   os_major = 2                 os_major = 2
   os_minor = 0                 os_minor = 2
   os_release = 35              os_release = 12
 
   Note: os_version = (os_major << 16) | (os_minor << 8) | os_release
 
   These are initialized using get_linux_version() from
   _initialize_arm_linux_nat().  */
 
static unsigned int os_version, os_major, os_minor, os_release;
 
/* On Linux, threads are implemented as pseudo-processes, in which
   case we may be tracing more than one process at a time.  In that
   case, inferior_ptid will contain the main process ID and the
   individual thread (process) ID.  get_thread_id () is used to
   get the thread id if it's available, and the process id otherwise. */
 
int
get_thread_id (ptid_t ptid)
{
  int tid = TIDGET (ptid);
  if (0 == tid)
    tid = PIDGET (ptid);
  return tid;
}
#define GET_THREAD_ID(PTID)     get_thread_id ((PTID));
 
static void
fetch_nwfpe_single (unsigned int fn, FPA11 * fpa11)
{
  unsigned int mem[3];
 
  mem[0] = fpa11->fpreg[fn].fSingle;
  mem[1] = 0;
  mem[2] = 0;
  supply_register (F0_REGNUM + fn, (char *) &mem[0]);
}
 
static void
fetch_nwfpe_double (unsigned int fn, FPA11 * fpa11)
{
  unsigned int mem[3];
 
  mem[0] = fpa11->fpreg[fn].fDouble[1];
  mem[1] = fpa11->fpreg[fn].fDouble[0];
  mem[2] = 0;
  supply_register (F0_REGNUM + fn, (char *) &mem[0]);
}
 
static void
fetch_nwfpe_none (unsigned int fn)
{
  unsigned int mem[3] =
  {0, 0, 0};
 
  supply_register (F0_REGNUM + fn, (char *) &mem[0]);
}
 
static void
fetch_nwfpe_extended (unsigned int fn, FPA11 * fpa11)
{
  unsigned int mem[3];
 
  mem[0] = fpa11->fpreg[fn].fExtended[0]; /* sign & exponent */
  mem[1] = fpa11->fpreg[fn].fExtended[2];       /* ls bits */
  mem[2] = fpa11->fpreg[fn].fExtended[1];       /* ms bits */
  supply_register (F0_REGNUM + fn, (char *) &mem[0]);
}
 
static void
fetch_nwfpe_register (int regno, FPA11 * fpa11)
{
   int fn = regno - F0_REGNUM;
 
   switch (fpa11->fType[fn])
     {
     case typeSingle:
       fetch_nwfpe_single (fn, fpa11);
       break;
 
     case typeDouble:
       fetch_nwfpe_double (fn, fpa11);
       break;
 
     case typeExtended:
       fetch_nwfpe_extended (fn, fpa11);
       break;
 
     default:
       fetch_nwfpe_none (fn);
     }
}
 
static void
store_nwfpe_single (unsigned int fn, FPA11 * fpa11)
{
  unsigned int mem[3];
 
  read_register_gen (F0_REGNUM + fn, (char *) &mem[0]);
  fpa11->fpreg[fn].fSingle = mem[0];
  fpa11->fType[fn] = typeSingle;
}
 
static void
store_nwfpe_double (unsigned int fn, FPA11 * fpa11)
{
  unsigned int mem[3];
 
  read_register_gen (F0_REGNUM + fn, (char *) &mem[0]);
  fpa11->fpreg[fn].fDouble[1] = mem[0];
  fpa11->fpreg[fn].fDouble[0] = mem[1];
  fpa11->fType[fn] = typeDouble;
}
 
void
store_nwfpe_extended (unsigned int fn, FPA11 * fpa11)
{
  unsigned int mem[3];
 
  read_register_gen (F0_REGNUM + fn, (char *) &mem[0]);
  fpa11->fpreg[fn].fExtended[0] = mem[0]; /* sign & exponent */
  fpa11->fpreg[fn].fExtended[2] = mem[1];       /* ls bits */
  fpa11->fpreg[fn].fExtended[1] = mem[2];       /* ms bits */
  fpa11->fType[fn] = typeDouble;
}
 
void
store_nwfpe_register (int regno, FPA11 * fpa11)
{
  if (register_valid[regno])
    {
       unsigned int fn = regno - F0_REGNUM;
       switch (fpa11->fType[fn])
         {
         case typeSingle:
           store_nwfpe_single (fn, fpa11);
           break;
 
         case typeDouble:
           store_nwfpe_double (fn, fpa11);
           break;
 
         case typeExtended:
           store_nwfpe_extended (fn, fpa11);
           break;
         }
    }
}
 
 
/* Get the value of a particular register from the floating point
   state of the process and store it into registers[].  */
 
static void
fetch_fpregister (int regno)
{
  int ret, tid;
  FPA11 fp;
 
  /* Get the thread id for the ptrace call.  */
  tid = GET_THREAD_ID (inferior_ptid);
 
  /* Read the floating point state.  */
  ret = ptrace (PT_GETFPREGS, tid, 0, &fp);
  if (ret < 0)
    {
      warning ("Unable to fetch floating point register.");
      return;
    }
 
  /* Fetch fpsr.  */
  if (FPS_REGNUM == regno)
    supply_register (FPS_REGNUM, (char *) &fp.fpsr);
 
  /* Fetch the floating point register.  */
  if (regno >= F0_REGNUM && regno <= F7_REGNUM)
    {
      int fn = regno - F0_REGNUM;
 
      switch (fp.fType[fn])
        {
        case typeSingle:
          fetch_nwfpe_single (fn, &fp);
          break;
 
        case typeDouble:
            fetch_nwfpe_double (fn, &fp);
          break;
 
        case typeExtended:
            fetch_nwfpe_extended (fn, &fp);
          break;
 
        default:
            fetch_nwfpe_none (fn);
        }
    }
}
 
/* Get the whole floating point state of the process and store it
   into registers[].  */
 
static void
fetch_fpregs (void)
{
  int ret, regno, tid;
  FPA11 fp;
 
  /* Get the thread id for the ptrace call.  */
  tid = GET_THREAD_ID (inferior_ptid);
 
  /* Read the floating point state.  */
  ret = ptrace (PT_GETFPREGS, tid, 0, &fp);
  if (ret < 0)
    {
      warning ("Unable to fetch the floating point registers.");
      return;
    }
 
  /* Fetch fpsr.  */
  supply_register (FPS_REGNUM, (char *) &fp.fpsr);
 
  /* Fetch the floating point registers.  */
  for (regno = F0_REGNUM; regno <= F7_REGNUM; regno++)
    {
      int fn = regno - F0_REGNUM;
 
      switch (fp.fType[fn])
        {
        case typeSingle:
          fetch_nwfpe_single (fn, &fp);
          break;
 
        case typeDouble:
          fetch_nwfpe_double (fn, &fp);
          break;
 
        case typeExtended:
          fetch_nwfpe_extended (fn, &fp);
          break;
 
        default:
          fetch_nwfpe_none (fn);
        }
    }
}
 
/* Save a particular register into the floating point state of the
   process using the contents from registers[].  */
 
static void
store_fpregister (int regno)
{
  int ret, tid;
  FPA11 fp;
 
  /* Get the thread id for the ptrace call.  */
  tid = GET_THREAD_ID (inferior_ptid);
 
  /* Read the floating point state.  */
  ret = ptrace (PT_GETFPREGS, tid, 0, &fp);
  if (ret < 0)
    {
      warning ("Unable to fetch the floating point registers.");
      return;
    }
 
  /* Store fpsr.  */
  if (FPS_REGNUM == regno && register_valid[FPS_REGNUM])
    read_register_gen (FPS_REGNUM, (char *) &fp.fpsr);
 
  /* Store the floating point register.  */
  if (regno >= F0_REGNUM && regno <= F7_REGNUM)
    {
      store_nwfpe_register (regno, &fp);
    }
 
  ret = ptrace (PTRACE_SETFPREGS, tid, 0, &fp);
  if (ret < 0)
    {
      warning ("Unable to store floating point register.");
      return;
    }
}
 
/* Save the whole floating point state of the process using
   the contents from registers[].  */
 
static void
store_fpregs (void)
{
  int ret, regno, tid;
  FPA11 fp;
 
  /* Get the thread id for the ptrace call.  */
  tid = GET_THREAD_ID (inferior_ptid);
 
  /* Read the floating point state.  */
  ret = ptrace (PT_GETFPREGS, tid, 0, &fp);
  if (ret < 0)
    {
      warning ("Unable to fetch the floating point registers.");
      return;
    }
 
  /* Store fpsr.  */
  if (register_valid[FPS_REGNUM])
    read_register_gen (FPS_REGNUM, (char *) &fp.fpsr);
 
  /* Store the floating point registers.  */
  for (regno = F0_REGNUM; regno <= F7_REGNUM; regno++)
    {
      fetch_nwfpe_register (regno, &fp);
    }
 
  ret = ptrace (PTRACE_SETFPREGS, tid, 0, &fp);
  if (ret < 0)
    {
      warning ("Unable to store floating point registers.");
      return;
    }
}
 
/* Fetch a general register of the process and store into
   registers[].  */
 
static void
fetch_register (int regno)
{
  int ret, tid;
  struct pt_regs regs;
 
  /* Get the thread id for the ptrace call.  */
  tid = GET_THREAD_ID (inferior_ptid);
 
  ret = ptrace (PTRACE_GETREGS, tid, 0, &regs);
  if (ret < 0)
    {
      warning ("Unable to fetch general register.");
      return;
    }
 
  if (regno >= A1_REGNUM && regno < PC_REGNUM)
    supply_register (regno, (char *) &regs.uregs[regno]);
 
  if (PS_REGNUM == regno)
    {
      if (arm_apcs_32)
        supply_register (PS_REGNUM, (char *) &regs.uregs[CPSR_REGNUM]);
      else
        supply_register (PS_REGNUM, (char *) &regs.uregs[PC_REGNUM]);
    }
 
  if (PC_REGNUM == regno)
    {
      regs.uregs[PC_REGNUM] = ADDR_BITS_REMOVE (regs.uregs[PC_REGNUM]);
      supply_register (PC_REGNUM, (char *) &regs.uregs[PC_REGNUM]);
    }
}
 
/* Fetch all general registers of the process and store into
   registers[].  */
 
static void
fetch_regs (void)
{
  int ret, regno, tid;
  struct pt_regs regs;
 
  /* Get the thread id for the ptrace call.  */
  tid = GET_THREAD_ID (inferior_ptid);
 
  ret = ptrace (PTRACE_GETREGS, tid, 0, &regs);
  if (ret < 0)
    {
      warning ("Unable to fetch general registers.");
      return;
    }
 
  for (regno = A1_REGNUM; regno < PC_REGNUM; regno++)
    supply_register (regno, (char *) &regs.uregs[regno]);
 
  if (arm_apcs_32)
    supply_register (PS_REGNUM, (char *) &regs.uregs[CPSR_REGNUM]);
  else
    supply_register (PS_REGNUM, (char *) &regs.uregs[PC_REGNUM]);
 
  regs.uregs[PC_REGNUM] = ADDR_BITS_REMOVE (regs.uregs[PC_REGNUM]);
  supply_register (PC_REGNUM, (char *) &regs.uregs[PC_REGNUM]);
}
 
/* Store all general registers of the process from the values in
   registers[].  */
 
static void
store_register (int regno)
{
  int ret, tid;
  struct pt_regs regs;
 
  if (!register_valid[regno])
    return;
 
  /* Get the thread id for the ptrace call.  */
  tid = GET_THREAD_ID (inferior_ptid);
 
  /* Get the general registers from the process.  */
  ret = ptrace (PTRACE_GETREGS, tid, 0, &regs);
  if (ret < 0)
    {
      warning ("Unable to fetch general registers.");
      return;
    }
 
  if (regno >= A1_REGNUM && regno <= PC_REGNUM)
    read_register_gen (regno, (char *) &regs.uregs[regno]);
 
  ret = ptrace (PTRACE_SETREGS, tid, 0, &regs);
  if (ret < 0)
    {
      warning ("Unable to store general register.");
      return;
    }
}
 
static void
store_regs (void)
{
  int ret, regno, tid;
  struct pt_regs regs;
 
  /* Get the thread id for the ptrace call.  */
  tid = GET_THREAD_ID (inferior_ptid);
 
  /* Fetch the general registers.  */
  ret = ptrace (PTRACE_GETREGS, tid, 0, &regs);
  if (ret < 0)
    {
      warning ("Unable to fetch general registers.");
      return;
    }
 
  for (regno = A1_REGNUM; regno <= PC_REGNUM; regno++)
    {
      if (register_valid[regno])
        read_register_gen (regno, (char *) &regs.uregs[regno]);
    }
 
  ret = ptrace (PTRACE_SETREGS, tid, 0, &regs);
 
  if (ret < 0)
    {
      warning ("Unable to store general registers.");
      return;
    }
}
 
/* Fetch registers from the child process.  Fetch all registers if
   regno == -1, otherwise fetch all general registers or all floating
   point registers depending upon the value of regno.  */
 
void
fetch_inferior_registers (int regno)
{
  if (-1 == regno)
    {
      fetch_regs ();
      fetch_fpregs ();
    }
  else
    {
      if (regno < F0_REGNUM || regno > FPS_REGNUM)
        fetch_register (regno);
 
      if (regno >= F0_REGNUM && regno <= FPS_REGNUM)
        fetch_fpregister (regno);
    }
}
 
/* Store registers back into the inferior.  Store all registers if
   regno == -1, otherwise store all general registers or all floating
   point registers depending upon the value of regno.  */
 
void
store_inferior_registers (int regno)
{
  if (-1 == regno)
    {
      store_regs ();
      store_fpregs ();
    }
  else
    {
      if ((regno < F0_REGNUM) || (regno > FPS_REGNUM))
        store_register (regno);
 
      if ((regno >= F0_REGNUM) && (regno <= FPS_REGNUM))
        store_fpregister (regno);
    }
}
 
/* Fill register regno (if it is a general-purpose register) in
   *gregsetp with the appropriate value from GDB's register array.
   If regno is -1, do this for all registers.  */
 
void
fill_gregset (gdb_gregset_t *gregsetp, int regno)
{
  if (-1 == regno)
    {
      int regnum;
      for (regnum = A1_REGNUM; regnum <= PC_REGNUM; regnum++)
        if (register_valid[regnum])
          read_register_gen (regnum, (char *) &(*gregsetp)[regnum]);
    }
  else if (regno >= A1_REGNUM && regno <= PC_REGNUM)
    {
      if (register_valid[regno])
        read_register_gen (regno, (char *) &(*gregsetp)[regno]);
    }
 
  if (PS_REGNUM == regno || -1 == regno)
    {
      if (register_valid[regno] || -1 == regno)
        {
          if (arm_apcs_32)
            read_register_gen (PS_REGNUM, (char *) &(*gregsetp)[CPSR_REGNUM]);
          else
            read_register_gen (PC_REGNUM, (char *) &(*gregsetp)[PC_REGNUM]);
        }
    }
 
}
 
/* Fill GDB's register array with the general-purpose register values
   in *gregsetp.  */
 
void
supply_gregset (gdb_gregset_t *gregsetp)
{
  int regno, reg_pc;
 
  for (regno = A1_REGNUM; regno < PC_REGNUM; regno++)
    supply_register (regno, (char *) &(*gregsetp)[regno]);
 
  if (arm_apcs_32)
    supply_register (PS_REGNUM, (char *) &(*gregsetp)[CPSR_REGNUM]);
  else
    supply_register (PS_REGNUM, (char *) &(*gregsetp)[PC_REGNUM]);
 
  reg_pc = ADDR_BITS_REMOVE ((CORE_ADDR)(*gregsetp)[PC_REGNUM]);
  supply_register (PC_REGNUM, (char *) &reg_pc);
}
 
/* Fill register regno (if it is a floating-point register) in
   *fpregsetp with the appropriate value from GDB's register array.
   If regno is -1, do this for all registers.  */
 
void
fill_fpregset (gdb_fpregset_t *fpregsetp, int regno)
{
  FPA11 *fp = (FPA11 *) fpregsetp;
 
  if (-1 == regno)
    {
       int regnum;
       for (regnum = F0_REGNUM; regnum <= F7_REGNUM; regnum++)
         store_nwfpe_register (regnum, fp);
    }
  else if (regno >= F0_REGNUM && regno <= F7_REGNUM)
    {
      store_nwfpe_register (regno, fp);
      return;
    }
 
  /* Store fpsr.  */
  if (register_valid[FPS_REGNUM])
    if (FPS_REGNUM == regno || -1 == regno)
      read_register_gen (FPS_REGNUM, (char *) &fp->fpsr);
}
 
/* Fill GDB's register array with the floating-point register values
   in *fpregsetp.  */
 
void
supply_fpregset (gdb_fpregset_t *fpregsetp)
{
  int regno;
  FPA11 *fp = (FPA11 *) fpregsetp;
 
  /* Fetch fpsr.  */
  supply_register (FPS_REGNUM, (char *) &fp->fpsr);
 
  /* Fetch the floating point registers.  */
  for (regno = F0_REGNUM; regno <= F7_REGNUM; regno++)
    {
      fetch_nwfpe_register (regno, fp);
    }
}
 
int
arm_linux_kernel_u_size (void)
{
  return (sizeof (struct user));
}
 
static unsigned int
get_linux_version (unsigned int *vmajor,
                   unsigned int *vminor,
                   unsigned int *vrelease)
{
  struct utsname info;
  char *pmajor, *pminor, *prelease, *tail;
 
  if (-1 == uname (&info))
    {
      warning ("Unable to determine Linux version.");
      return -1;
    }
 
  pmajor = strtok (info.release, ".");
  pminor = strtok (NULL, ".");
  prelease = strtok (NULL, ".");
 
  *vmajor = (unsigned int) strtoul (pmajor, &tail, 0);
  *vminor = (unsigned int) strtoul (pminor, &tail, 0);
  *vrelease = (unsigned int) strtoul (prelease, &tail, 0);
 
  return ((*vmajor << 16) | (*vminor << 8) | *vrelease);
}
 
void
_initialize_arm_linux_nat (void)
{
  os_version = get_linux_version (&os_major, &os_minor, &os_release);
}

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[/] [or1k/] [tags/] [start/] [insight/] [gdb/] [arm-linux-nat.c] - Blame information for rev 1765

Line No.	Rev	Author	Line
1	578	markom	`/* GNU/Linux on ARM native support.`
2			`Copyright 1999, 2000, 2001 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			`#include "regcache.h"`
26
27			`#include <sys/user.h>`
28			`#include <sys/ptrace.h>`
29			`#include <sys/utsname.h>`
30			`#include <sys/procfs.h>`
31
32			`/* Prototypes for supply_gregset etc. */`
33			`#include "gregset.h"`
34
35			`extern int arm_apcs_32;`
36
37			`#define typeNone 0x00`
38			`#define typeSingle 0x01`
39			`#define typeDouble 0x02`
40			`#define typeExtended 0x03`
41			`#define FPWORDS 28`
42			`#define CPSR_REGNUM 16`
43
44			`typedef union tagFPREG`
45			`{`
46			`unsigned int fSingle;`
47			`unsigned int fDouble[2];`
48			`unsigned int fExtended[3];`
49			`}`
50			`FPREG;`
51
52			`typedef struct tagFPA11`
53			`{`
54			`FPREG fpreg[8]; /* 8 floating point registers */`
55			`unsigned int fpsr; /* floating point status register */`
56			`unsigned int fpcr; /* floating point control register */`
57			`unsigned char fType[8]; /* type of floating point value held in`
58			`floating point registers. */`
59			`int initflag; /* NWFPE initialization flag. */`
60			`}`
61			`FPA11;`
62
63			`/* The following variables are used to determine the version of the`
64			`underlying Linux operating system. Examples:`
65
66			`Linux 2.0.35 Linux 2.2.12`
67			`os_version = 0x00020023 os_version = 0x0002020c`
68			`os_major = 2 os_major = 2`
69			`os_minor = 0 os_minor = 2`
70			`os_release = 35 os_release = 12`
71
72			`Note: os_version = (os_major << 16) \| (os_minor << 8) \| os_release`
73
74			`These are initialized using get_linux_version() from`
75			`_initialize_arm_linux_nat(). */`
76
77			`static unsigned int os_version, os_major, os_minor, os_release;`
78
79			`/* On Linux, threads are implemented as pseudo-processes, in which`
80			`case we may be tracing more than one process at a time. In that`
81			`case, inferior_ptid will contain the main process ID and the`
82			`individual thread (process) ID. get_thread_id () is used to`
83			`get the thread id if it's available, and the process id otherwise. */`
84
85			`int`
86			`get_thread_id (ptid_t ptid)`
87			`{`
88			`int tid = TIDGET (ptid);`
89			`if (0 == tid)`
90			`tid = PIDGET (ptid);`
91			`return tid;`
92			`}`
93			`#define GET_THREAD_ID(PTID) get_thread_id ((PTID));`
94
95			`static void`
96			`fetch_nwfpe_single (unsigned int fn, FPA11 * fpa11)`
97			`{`
98			`unsigned int mem[3];`
99
100			`mem[0] = fpa11->fpreg[fn].fSingle;`
101			`mem[1] = 0;`
102			`mem[2] = 0;`
103			`supply_register (F0_REGNUM + fn, (char *) &mem[0]);`
104			`}`
105
106			`static void`
107			`fetch_nwfpe_double (unsigned int fn, FPA11 * fpa11)`
108			`{`
109			`unsigned int mem[3];`
110
111			`mem[0] = fpa11->fpreg[fn].fDouble[1];`
112			`mem[1] = fpa11->fpreg[fn].fDouble[0];`
113			`mem[2] = 0;`
114			`supply_register (F0_REGNUM + fn, (char *) &mem[0]);`
115			`}`
116
117			`static void`
118			`fetch_nwfpe_none (unsigned int fn)`
119			`{`
120			`unsigned int mem[3] =`
121			`{0, 0, 0};`
122
123			`supply_register (F0_REGNUM + fn, (char *) &mem[0]);`
124			`}`
125
126			`static void`
127			`fetch_nwfpe_extended (unsigned int fn, FPA11 * fpa11)`
128			`{`
129			`unsigned int mem[3];`
130
131			`mem[0] = fpa11->fpreg[fn].fExtended[0]; /* sign & exponent */`
132			`mem[1] = fpa11->fpreg[fn].fExtended[2]; /* ls bits */`
133			`mem[2] = fpa11->fpreg[fn].fExtended[1]; /* ms bits */`
134			`supply_register (F0_REGNUM + fn, (char *) &mem[0]);`
135			`}`
136
137			`static void`
138			`fetch_nwfpe_register (int regno, FPA11 * fpa11)`
139			`{`
140			`int fn = regno - F0_REGNUM;`
141
142			`switch (fpa11->fType[fn])`
143			`{`
144			`case typeSingle:`
145			`fetch_nwfpe_single (fn, fpa11);`
146			`break;`
147
148			`case typeDouble:`
149			`fetch_nwfpe_double (fn, fpa11);`
150			`break;`
151
152			`case typeExtended:`
153			`fetch_nwfpe_extended (fn, fpa11);`
154			`break;`
155
156			`default:`
157			`fetch_nwfpe_none (fn);`
158			`}`
159			`}`
160
161			`static void`
162			`store_nwfpe_single (unsigned int fn, FPA11 * fpa11)`
163			`{`
164			`unsigned int mem[3];`
165
166			`read_register_gen (F0_REGNUM + fn, (char *) &mem[0]);`
167			`fpa11->fpreg[fn].fSingle = mem[0];`
168			`fpa11->fType[fn] = typeSingle;`
169			`}`
170
171			`static void`
172			`store_nwfpe_double (unsigned int fn, FPA11 * fpa11)`
173			`{`
174			`unsigned int mem[3];`
175
176			`read_register_gen (F0_REGNUM + fn, (char *) &mem[0]);`
177			`fpa11->fpreg[fn].fDouble[1] = mem[0];`
178			`fpa11->fpreg[fn].fDouble[0] = mem[1];`
179			`fpa11->fType[fn] = typeDouble;`
180			`}`
181
182			`void`
183			`store_nwfpe_extended (unsigned int fn, FPA11 * fpa11)`
184			`{`
185			`unsigned int mem[3];`
186
187			`read_register_gen (F0_REGNUM + fn, (char *) &mem[0]);`
188			`fpa11->fpreg[fn].fExtended[0] = mem[0]; /* sign & exponent */`
189			`fpa11->fpreg[fn].fExtended[2] = mem[1]; /* ls bits */`
190			`fpa11->fpreg[fn].fExtended[1] = mem[2]; /* ms bits */`
191			`fpa11->fType[fn] = typeDouble;`
192			`}`
193
194			`void`
195			`store_nwfpe_register (int regno, FPA11 * fpa11)`
196			`{`
197			`if (register_valid[regno])`
198			`{`
199			`unsigned int fn = regno - F0_REGNUM;`
200			`switch (fpa11->fType[fn])`
201			`{`
202			`case typeSingle:`
203			`store_nwfpe_single (fn, fpa11);`
204			`break;`
205
206			`case typeDouble:`
207			`store_nwfpe_double (fn, fpa11);`
208			`break;`
209
210			`case typeExtended:`
211			`store_nwfpe_extended (fn, fpa11);`
212			`break;`
213			`}`
214			`}`
215			`}`
216
217
218			`/* Get the value of a particular register from the floating point`
219			`state of the process and store it into registers[]. */`
220
221			`static void`
222			`fetch_fpregister (int regno)`
223			`{`
224			`int ret, tid;`
225			`FPA11 fp;`
226
227			`/* Get the thread id for the ptrace call. */`
228			`tid = GET_THREAD_ID (inferior_ptid);`
229
230			`/* Read the floating point state. */`
231			`ret = ptrace (PT_GETFPREGS, tid, 0, &fp);`
232			`if (ret < 0)`
233			`{`
234			`warning ("Unable to fetch floating point register.");`
235			`return;`
236			`}`
237
238			`/* Fetch fpsr. */`
239			`if (FPS_REGNUM == regno)`
240			`supply_register (FPS_REGNUM, (char *) &fp.fpsr);`
241
242			`/* Fetch the floating point register. */`
243			`if (regno >= F0_REGNUM && regno <= F7_REGNUM)`
244			`{`
245			`int fn = regno - F0_REGNUM;`
246
247			`switch (fp.fType[fn])`
248			`{`
249			`case typeSingle:`
250			`fetch_nwfpe_single (fn, &fp);`
251			`break;`
252
253			`case typeDouble:`
254			`fetch_nwfpe_double (fn, &fp);`
255			`break;`
256
257			`case typeExtended:`
258			`fetch_nwfpe_extended (fn, &fp);`
259			`break;`
260
261			`default:`
262			`fetch_nwfpe_none (fn);`
263			`}`
264			`}`
265			`}`
266
267			`/* Get the whole floating point state of the process and store it`
268			`into registers[]. */`
269
270			`static void`
271			`fetch_fpregs (void)`
272			`{`
273			`int ret, regno, tid;`
274			`FPA11 fp;`
275
276			`/* Get the thread id for the ptrace call. */`
277			`tid = GET_THREAD_ID (inferior_ptid);`
278
279			`/* Read the floating point state. */`
280			`ret = ptrace (PT_GETFPREGS, tid, 0, &fp);`
281			`if (ret < 0)`
282			`{`
283			`warning ("Unable to fetch the floating point registers.");`
284			`return;`
285			`}`
286
287			`/* Fetch fpsr. */`
288			`supply_register (FPS_REGNUM, (char *) &fp.fpsr);`
289
290			`/* Fetch the floating point registers. */`
291			`for (regno = F0_REGNUM; regno <= F7_REGNUM; regno++)`
292			`{`
293			`int fn = regno - F0_REGNUM;`
294
295			`switch (fp.fType[fn])`
296			`{`
297			`case typeSingle:`
298			`fetch_nwfpe_single (fn, &fp);`
299			`break;`
300
301			`case typeDouble:`
302			`fetch_nwfpe_double (fn, &fp);`
303			`break;`
304
305			`case typeExtended:`
306			`fetch_nwfpe_extended (fn, &fp);`
307			`break;`
308
309			`default:`
310			`fetch_nwfpe_none (fn);`
311			`}`
312			`}`
313			`}`
314
315			`/* Save a particular register into the floating point state of the`
316			`process using the contents from registers[]. */`
317
318			`static void`
319			`store_fpregister (int regno)`
320			`{`
321			`int ret, tid;`
322			`FPA11 fp;`
323
324			`/* Get the thread id for the ptrace call. */`
325			`tid = GET_THREAD_ID (inferior_ptid);`
326
327			`/* Read the floating point state. */`
328			`ret = ptrace (PT_GETFPREGS, tid, 0, &fp);`
329			`if (ret < 0)`
330			`{`
331			`warning ("Unable to fetch the floating point registers.");`
332			`return;`
333			`}`
334
335			`/* Store fpsr. */`
336			`if (FPS_REGNUM == regno && register_valid[FPS_REGNUM])`
337			`read_register_gen (FPS_REGNUM, (char *) &fp.fpsr);`
338
339			`/* Store the floating point register. */`
340			`if (regno >= F0_REGNUM && regno <= F7_REGNUM)`
341			`{`
342			`store_nwfpe_register (regno, &fp);`
343			`}`
344
345			`ret = ptrace (PTRACE_SETFPREGS, tid, 0, &fp);`
346			`if (ret < 0)`
347			`{`
348			`warning ("Unable to store floating point register.");`
349			`return;`
350			`}`
351			`}`
352
353			`/* Save the whole floating point state of the process using`
354			`the contents from registers[]. */`
355
356			`static void`
357			`store_fpregs (void)`
358			`{`
359			`int ret, regno, tid;`
360			`FPA11 fp;`
361
362			`/* Get the thread id for the ptrace call. */`
363			`tid = GET_THREAD_ID (inferior_ptid);`
364
365			`/* Read the floating point state. */`
366			`ret = ptrace (PT_GETFPREGS, tid, 0, &fp);`
367			`if (ret < 0)`
368			`{`
369			`warning ("Unable to fetch the floating point registers.");`
370			`return;`
371			`}`
372
373			`/* Store fpsr. */`
374			`if (register_valid[FPS_REGNUM])`
375			`read_register_gen (FPS_REGNUM, (char *) &fp.fpsr);`
376
377			`/* Store the floating point registers. */`
378			`for (regno = F0_REGNUM; regno <= F7_REGNUM; regno++)`
379			`{`
380			`fetch_nwfpe_register (regno, &fp);`
381			`}`
382
383			`ret = ptrace (PTRACE_SETFPREGS, tid, 0, &fp);`
384			`if (ret < 0)`
385			`{`
386			`warning ("Unable to store floating point registers.");`
387			`return;`
388			`}`
389			`}`
390
391			`/* Fetch a general register of the process and store into`
392			`registers[]. */`
393
394			`static void`
395			`fetch_register (int regno)`
396			`{`
397			`int ret, tid;`
398			`struct pt_regs regs;`
399
400			`/* Get the thread id for the ptrace call. */`
401			`tid = GET_THREAD_ID (inferior_ptid);`
402
403			`ret = ptrace (PTRACE_GETREGS, tid, 0, &regs);`
404			`if (ret < 0)`
405			`{`
406			`warning ("Unable to fetch general register.");`
407			`return;`
408			`}`
409
410			`if (regno >= A1_REGNUM && regno < PC_REGNUM)`
411			`supply_register (regno, (char *) &regs.uregs[regno]);`
412
413			`if (PS_REGNUM == regno)`
414			`{`
415			`if (arm_apcs_32)`
416			`supply_register (PS_REGNUM, (char *) &regs.uregs[CPSR_REGNUM]);`
417			`else`
418			`supply_register (PS_REGNUM, (char *) &regs.uregs[PC_REGNUM]);`
419			`}`
420
421			`if (PC_REGNUM == regno)`
422			`{`
423			`regs.uregs[PC_REGNUM] = ADDR_BITS_REMOVE (regs.uregs[PC_REGNUM]);`
424			`supply_register (PC_REGNUM, (char *) &regs.uregs[PC_REGNUM]);`
425			`}`
426			`}`
427
428			`/* Fetch all general registers of the process and store into`
429			`registers[]. */`
430
431			`static void`
432			`fetch_regs (void)`
433			`{`
434			`int ret, regno, tid;`
435			`struct pt_regs regs;`
436
437			`/* Get the thread id for the ptrace call. */`
438			`tid = GET_THREAD_ID (inferior_ptid);`
439
440			`ret = ptrace (PTRACE_GETREGS, tid, 0, &regs);`
441			`if (ret < 0)`
442			`{`
443			`warning ("Unable to fetch general registers.");`
444			`return;`
445			`}`
446
447			`for (regno = A1_REGNUM; regno < PC_REGNUM; regno++)`
448			`supply_register (regno, (char *) &regs.uregs[regno]);`
449
450			`if (arm_apcs_32)`
451			`supply_register (PS_REGNUM, (char *) &regs.uregs[CPSR_REGNUM]);`
452			`else`
453			`supply_register (PS_REGNUM, (char *) &regs.uregs[PC_REGNUM]);`
454
455			`regs.uregs[PC_REGNUM] = ADDR_BITS_REMOVE (regs.uregs[PC_REGNUM]);`
456			`supply_register (PC_REGNUM, (char *) &regs.uregs[PC_REGNUM]);`
457			`}`
458
459			`/* Store all general registers of the process from the values in`
460			`registers[]. */`
461
462			`static void`
463			`store_register (int regno)`
464			`{`
465			`int ret, tid;`
466			`struct pt_regs regs;`
467
468			`if (!register_valid[regno])`
469			`return;`
470
471			`/* Get the thread id for the ptrace call. */`
472			`tid = GET_THREAD_ID (inferior_ptid);`
473
474			`/* Get the general registers from the process. */`
475			`ret = ptrace (PTRACE_GETREGS, tid, 0, &regs);`
476			`if (ret < 0)`
477			`{`
478			`warning ("Unable to fetch general registers.");`
479			`return;`
480			`}`
481
482			`if (regno >= A1_REGNUM && regno <= PC_REGNUM)`
483			`read_register_gen (regno, (char *) &regs.uregs[regno]);`
484
485			`ret = ptrace (PTRACE_SETREGS, tid, 0, &regs);`
486			`if (ret < 0)`
487			`{`
488			`warning ("Unable to store general register.");`
489			`return;`
490			`}`
491			`}`
492
493			`static void`
494			`store_regs (void)`
495			`{`
496			`int ret, regno, tid;`
497			`struct pt_regs regs;`
498
499			`/* Get the thread id for the ptrace call. */`
500			`tid = GET_THREAD_ID (inferior_ptid);`
501
502			`/* Fetch the general registers. */`
503			`ret = ptrace (PTRACE_GETREGS, tid, 0, &regs);`
504			`if (ret < 0)`
505			`{`
506			`warning ("Unable to fetch general registers.");`
507			`return;`
508			`}`
509
510			`for (regno = A1_REGNUM; regno <= PC_REGNUM; regno++)`
511			`{`
512			`if (register_valid[regno])`
513			`read_register_gen (regno, (char *) &regs.uregs[regno]);`
514			`}`
515
516			`ret = ptrace (PTRACE_SETREGS, tid, 0, &regs);`
517
518			`if (ret < 0)`
519			`{`
520			`warning ("Unable to store general registers.");`
521			`return;`
522			`}`
523			`}`
524
525			`/* Fetch registers from the child process. Fetch all registers if`
526			`regno == -1, otherwise fetch all general registers or all floating`
527			`point registers depending upon the value of regno. */`
528
529			`void`
530			`fetch_inferior_registers (int regno)`
531			`{`
532			`if (-1 == regno)`
533			`{`
534			`fetch_regs ();`
535			`fetch_fpregs ();`
536			`}`
537			`else`
538			`{`
539			`if (regno < F0_REGNUM \|\| regno > FPS_REGNUM)`
540			`fetch_register (regno);`
541
542			`if (regno >= F0_REGNUM && regno <= FPS_REGNUM)`
543			`fetch_fpregister (regno);`
544			`}`
545			`}`
546
547			`/* Store registers back into the inferior. Store all registers if`
548			`regno == -1, otherwise store all general registers or all floating`
549			`point registers depending upon the value of regno. */`
550
551			`void`
552			`store_inferior_registers (int regno)`
553			`{`
554			`if (-1 == regno)`
555			`{`
556			`store_regs ();`
557			`store_fpregs ();`
558			`}`
559			`else`
560			`{`
561			`if ((regno < F0_REGNUM) \|\| (regno > FPS_REGNUM))`
562			`store_register (regno);`
563
564			`if ((regno >= F0_REGNUM) && (regno <= FPS_REGNUM))`
565			`store_fpregister (regno);`
566			`}`
567			`}`
568
569			`/* Fill register regno (if it is a general-purpose register) in`
570			`*gregsetp with the appropriate value from GDB's register array.`
571			`If regno is -1, do this for all registers. */`
572
573			`void`
574			`fill_gregset (gdb_gregset_t *gregsetp, int regno)`
575			`{`
576			`if (-1 == regno)`
577			`{`
578			`int regnum;`
579			`for (regnum = A1_REGNUM; regnum <= PC_REGNUM; regnum++)`
580			`if (register_valid[regnum])`
581			`read_register_gen (regnum, (char ) &(gregsetp)[regnum]);`
582			`}`
583			`else if (regno >= A1_REGNUM && regno <= PC_REGNUM)`
584			`{`
585			`if (register_valid[regno])`
586			`read_register_gen (regno, (char ) &(gregsetp)[regno]);`
587			`}`
588
589			`if (PS_REGNUM == regno \|\| -1 == regno)`
590			`{`
591			`if (register_valid[regno] \|\| -1 == regno)`
592			`{`
593			`if (arm_apcs_32)`
594			`read_register_gen (PS_REGNUM, (char ) &(gregsetp)[CPSR_REGNUM]);`
595			`else`
596			`read_register_gen (PC_REGNUM, (char ) &(gregsetp)[PC_REGNUM]);`
597			`}`
598			`}`
599
600			`}`
601
602			`/* Fill GDB's register array with the general-purpose register values`
603			`in gregsetp. /`
604
605			`void`
606			`supply_gregset (gdb_gregset_t *gregsetp)`
607			`{`
608			`int regno, reg_pc;`
609
610			`for (regno = A1_REGNUM; regno < PC_REGNUM; regno++)`
611			`supply_register (regno, (char ) &(gregsetp)[regno]);`
612
613			`if (arm_apcs_32)`
614			`supply_register (PS_REGNUM, (char ) &(gregsetp)[CPSR_REGNUM]);`
615			`else`
616			`supply_register (PS_REGNUM, (char ) &(gregsetp)[PC_REGNUM]);`
617
618			`reg_pc = ADDR_BITS_REMOVE ((CORE_ADDR)(*gregsetp)[PC_REGNUM]);`
619			`supply_register (PC_REGNUM, (char *) &reg_pc);`
620			`}`
621
622			`/* Fill register regno (if it is a floating-point register) in`
623			`*fpregsetp with the appropriate value from GDB's register array.`
624			`If regno is -1, do this for all registers. */`
625
626			`void`
627			`fill_fpregset (gdb_fpregset_t *fpregsetp, int regno)`
628			`{`
629			`FPA11 fp = (FPA11 ) fpregsetp;`
630
631			`if (-1 == regno)`
632			`{`
633			`int regnum;`
634			`for (regnum = F0_REGNUM; regnum <= F7_REGNUM; regnum++)`
635			`store_nwfpe_register (regnum, fp);`
636			`}`
637			`else if (regno >= F0_REGNUM && regno <= F7_REGNUM)`
638			`{`
639			`store_nwfpe_register (regno, fp);`
640			`return;`
641			`}`
642
643			`/* Store fpsr. */`
644			`if (register_valid[FPS_REGNUM])`
645			`if (FPS_REGNUM == regno \|\| -1 == regno)`
646			`read_register_gen (FPS_REGNUM, (char *) &fp->fpsr);`
647			`}`
648
649			`/* Fill GDB's register array with the floating-point register values`
650			`in fpregsetp. /`
651
652			`void`
653			`supply_fpregset (gdb_fpregset_t *fpregsetp)`
654			`{`
655			`int regno;`
656			`FPA11 fp = (FPA11 ) fpregsetp;`
657
658			`/* Fetch fpsr. */`
659			`supply_register (FPS_REGNUM, (char *) &fp->fpsr);`
660
661			`/* Fetch the floating point registers. */`
662			`for (regno = F0_REGNUM; regno <= F7_REGNUM; regno++)`
663			`{`
664			`fetch_nwfpe_register (regno, fp);`
665			`}`
666			`}`
667
668			`int`
669			`arm_linux_kernel_u_size (void)`
670			`{`
671			`return (sizeof (struct user));`
672			`}`
673
674			`static unsigned int`
675			`get_linux_version (unsigned int *vmajor,`
676			`unsigned int *vminor,`
677			`unsigned int *vrelease)`
678			`{`
679			`struct utsname info;`
680			`char pmajor, pminor, prelease, tail;`
681
682			`if (-1 == uname (&info))`
683			`{`
684			`warning ("Unable to determine Linux version.");`
685			`return -1;`
686			`}`
687
688			`pmajor = strtok (info.release, ".");`
689			`pminor = strtok (NULL, ".");`
690			`prelease = strtok (NULL, ".");`
691
692			`*vmajor = (unsigned int) strtoul (pmajor, &tail, 0);`
693			`*vminor = (unsigned int) strtoul (pminor, &tail, 0);`
694			`*vrelease = (unsigned int) strtoul (prelease, &tail, 0);`
695
696			`return ((vmajor << 16) \| (vminor << 8) \| *vrelease);`
697			`}`
698
699			`void`
700			`_initialize_arm_linux_nat (void)`
701			`{`
702			`os_version = get_linux_version (&os_major, &os_minor, &os_release);`
703			`}`