699 lines
16 KiB
C
699 lines
16 KiB
C
/* GNU/Linux on ARM native support.
|
|
Copyright 1999, 2000, 2001, 2002 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 "arm-tdep.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 ARM_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 (ARM_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 (ARM_F0_REGNUM + fn, (char *) &mem[0]);
|
|
}
|
|
|
|
static void
|
|
fetch_nwfpe_none (unsigned int fn)
|
|
{
|
|
unsigned int mem[3] =
|
|
{0, 0, 0};
|
|
|
|
supply_register (ARM_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 (ARM_F0_REGNUM + fn, (char *) &mem[0]);
|
|
}
|
|
|
|
static void
|
|
fetch_nwfpe_register (int regno, FPA11 * fpa11)
|
|
{
|
|
int fn = regno - ARM_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 (ARM_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 (ARM_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 (ARM_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_cached (regno))
|
|
{
|
|
unsigned int fn = regno - ARM_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 regcache. */
|
|
|
|
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 (ARM_FPS_REGNUM == regno)
|
|
supply_register (ARM_FPS_REGNUM, (char *) &fp.fpsr);
|
|
|
|
/* Fetch the floating point register. */
|
|
if (regno >= ARM_F0_REGNUM && regno <= ARM_F7_REGNUM)
|
|
{
|
|
int fn = regno - ARM_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 regcache. */
|
|
|
|
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 (ARM_FPS_REGNUM, (char *) &fp.fpsr);
|
|
|
|
/* Fetch the floating point registers. */
|
|
for (regno = ARM_F0_REGNUM; regno <= ARM_F7_REGNUM; regno++)
|
|
{
|
|
int fn = regno - ARM_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 regcache. */
|
|
|
|
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 (ARM_FPS_REGNUM == regno && register_cached (ARM_FPS_REGNUM))
|
|
read_register_gen (ARM_FPS_REGNUM, (char *) &fp.fpsr);
|
|
|
|
/* Store the floating point register. */
|
|
if (regno >= ARM_F0_REGNUM && regno <= ARM_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 regcache. */
|
|
|
|
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_cached (ARM_FPS_REGNUM))
|
|
read_register_gen (ARM_FPS_REGNUM, (char *) &fp.fpsr);
|
|
|
|
/* Store the floating point registers. */
|
|
for (regno = ARM_F0_REGNUM; regno <= ARM_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
|
|
regcache. */
|
|
|
|
static void
|
|
fetch_register (int regno)
|
|
{
|
|
int ret, tid;
|
|
elf_gregset_t regs;
|
|
|
|
/* Get the thread id for the ptrace call. */
|
|
tid = GET_THREAD_ID (inferior_ptid);
|
|
|
|
ret = ptrace (PTRACE_GETREGS, tid, 0, ®s);
|
|
if (ret < 0)
|
|
{
|
|
warning ("Unable to fetch general register.");
|
|
return;
|
|
}
|
|
|
|
if (regno >= ARM_A1_REGNUM && regno < ARM_PC_REGNUM)
|
|
supply_register (regno, (char *) ®s[regno]);
|
|
|
|
if (ARM_PS_REGNUM == regno)
|
|
{
|
|
if (arm_apcs_32)
|
|
supply_register (ARM_PS_REGNUM, (char *) ®s[ARM_CPSR_REGNUM]);
|
|
else
|
|
supply_register (ARM_PS_REGNUM, (char *) ®s[ARM_PC_REGNUM]);
|
|
}
|
|
|
|
if (ARM_PC_REGNUM == regno)
|
|
{
|
|
regs[ARM_PC_REGNUM] = ADDR_BITS_REMOVE (regs[ARM_PC_REGNUM]);
|
|
supply_register (ARM_PC_REGNUM, (char *) ®s[ARM_PC_REGNUM]);
|
|
}
|
|
}
|
|
|
|
/* Fetch all general registers of the process and store into
|
|
regcache. */
|
|
|
|
static void
|
|
fetch_regs (void)
|
|
{
|
|
int ret, regno, tid;
|
|
elf_gregset_t regs;
|
|
|
|
/* Get the thread id for the ptrace call. */
|
|
tid = GET_THREAD_ID (inferior_ptid);
|
|
|
|
ret = ptrace (PTRACE_GETREGS, tid, 0, ®s);
|
|
if (ret < 0)
|
|
{
|
|
warning ("Unable to fetch general registers.");
|
|
return;
|
|
}
|
|
|
|
for (regno = ARM_A1_REGNUM; regno < ARM_PC_REGNUM; regno++)
|
|
supply_register (regno, (char *) ®s[regno]);
|
|
|
|
if (arm_apcs_32)
|
|
supply_register (ARM_PS_REGNUM, (char *) ®s[ARM_CPSR_REGNUM]);
|
|
else
|
|
supply_register (ARM_PS_REGNUM, (char *) ®s[ARM_PC_REGNUM]);
|
|
|
|
regs[ARM_PC_REGNUM] = ADDR_BITS_REMOVE (regs[ARM_PC_REGNUM]);
|
|
supply_register (ARM_PC_REGNUM, (char *) ®s[ARM_PC_REGNUM]);
|
|
}
|
|
|
|
/* Store all general registers of the process from the values in
|
|
regcache. */
|
|
|
|
static void
|
|
store_register (int regno)
|
|
{
|
|
int ret, tid;
|
|
elf_gregset_t regs;
|
|
|
|
if (!register_cached (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, ®s);
|
|
if (ret < 0)
|
|
{
|
|
warning ("Unable to fetch general registers.");
|
|
return;
|
|
}
|
|
|
|
if (regno >= ARM_A1_REGNUM && regno <= ARM_PC_REGNUM)
|
|
read_register_gen (regno, (char *) ®s[regno]);
|
|
|
|
ret = ptrace (PTRACE_SETREGS, tid, 0, ®s);
|
|
if (ret < 0)
|
|
{
|
|
warning ("Unable to store general register.");
|
|
return;
|
|
}
|
|
}
|
|
|
|
static void
|
|
store_regs (void)
|
|
{
|
|
int ret, regno, tid;
|
|
elf_gregset_t 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, ®s);
|
|
if (ret < 0)
|
|
{
|
|
warning ("Unable to fetch general registers.");
|
|
return;
|
|
}
|
|
|
|
for (regno = ARM_A1_REGNUM; regno <= ARM_PC_REGNUM; regno++)
|
|
{
|
|
if (register_cached (regno))
|
|
read_register_gen (regno, (char *) ®s[regno]);
|
|
}
|
|
|
|
ret = ptrace (PTRACE_SETREGS, tid, 0, ®s);
|
|
|
|
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 < ARM_F0_REGNUM || regno > ARM_FPS_REGNUM)
|
|
fetch_register (regno);
|
|
|
|
if (regno >= ARM_F0_REGNUM && regno <= ARM_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 < ARM_F0_REGNUM) || (regno > ARM_FPS_REGNUM))
|
|
store_register (regno);
|
|
|
|
if ((regno >= ARM_F0_REGNUM) && (regno <= ARM_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 = ARM_A1_REGNUM; regnum <= ARM_PC_REGNUM; regnum++)
|
|
read_register_gen (regnum, (char *) &(*gregsetp)[regnum]);
|
|
}
|
|
else if (regno >= ARM_A1_REGNUM && regno <= ARM_PC_REGNUM)
|
|
read_register_gen (regno, (char *) &(*gregsetp)[regno]);
|
|
|
|
if (ARM_PS_REGNUM == regno || -1 == regno)
|
|
{
|
|
if (arm_apcs_32)
|
|
read_register_gen (ARM_PS_REGNUM,
|
|
(char *) &(*gregsetp)[ARM_CPSR_REGNUM]);
|
|
else
|
|
read_register_gen (ARM_PC_REGNUM,
|
|
(char *) &(*gregsetp)[ARM_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 = ARM_A1_REGNUM; regno < ARM_PC_REGNUM; regno++)
|
|
supply_register (regno, (char *) &(*gregsetp)[regno]);
|
|
|
|
if (arm_apcs_32)
|
|
supply_register (ARM_PS_REGNUM, (char *) &(*gregsetp)[ARM_CPSR_REGNUM]);
|
|
else
|
|
supply_register (ARM_PS_REGNUM, (char *) &(*gregsetp)[ARM_PC_REGNUM]);
|
|
|
|
reg_pc = ADDR_BITS_REMOVE ((CORE_ADDR)(*gregsetp)[ARM_PC_REGNUM]);
|
|
supply_register (ARM_PC_REGNUM, (char *) ®_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 = ARM_F0_REGNUM; regnum <= ARM_F7_REGNUM; regnum++)
|
|
store_nwfpe_register (regnum, fp);
|
|
}
|
|
else if (regno >= ARM_F0_REGNUM && regno <= ARM_F7_REGNUM)
|
|
{
|
|
store_nwfpe_register (regno, fp);
|
|
return;
|
|
}
|
|
|
|
/* Store fpsr. */
|
|
if (ARM_FPS_REGNUM == regno || -1 == regno)
|
|
read_register_gen (ARM_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 (ARM_FPS_REGNUM, (char *) &fp->fpsr);
|
|
|
|
/* Fetch the floating point registers. */
|
|
for (regno = ARM_F0_REGNUM; regno <= ARM_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);
|
|
}
|