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/* Native-dependent code for SPARC.
/* Native-dependent code for SPARC.
 
 
   Copyright (C) 2003, 2004, 2005, 2007, 2008, 2009, 2010
   Copyright (C) 2003, 2004, 2005, 2007, 2008, 2009, 2010
   Free Software Foundation, Inc.
   Free Software Foundation, Inc.
 
 
   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 "regcache.h"
#include "regcache.h"
#include "target.h"
#include "target.h"
 
 
#include "gdb_assert.h"
#include "gdb_assert.h"
#include <signal.h>
#include <signal.h>
#include "gdb_string.h"
#include "gdb_string.h"
#include <sys/ptrace.h>
#include <sys/ptrace.h>
#include "gdb_wait.h"
#include "gdb_wait.h"
#ifdef HAVE_MACHINE_REG_H
#ifdef HAVE_MACHINE_REG_H
#include <machine/reg.h>
#include <machine/reg.h>
#endif
#endif
 
 
#include "sparc-tdep.h"
#include "sparc-tdep.h"
#include "sparc-nat.h"
#include "sparc-nat.h"
#include "inf-ptrace.h"
#include "inf-ptrace.h"
 
 
/* With some trickery we can use the code in this file for most (if
/* With some trickery we can use the code in this file for most (if
   not all) ptrace(2) based SPARC systems, which includes SunOS 4,
   not all) ptrace(2) based SPARC systems, which includes SunOS 4,
   GNU/Linux and the various SPARC BSD's.
   GNU/Linux and the various SPARC BSD's.
 
 
   First, we need a data structure for use with ptrace(2).  SunOS has
   First, we need a data structure for use with ptrace(2).  SunOS has
   `struct regs' and `struct fp_status' in <machine/reg.h>.  BSD's
   `struct regs' and `struct fp_status' in <machine/reg.h>.  BSD's
   have `struct reg' and `struct fpreg' in <machine/reg.h>.  GNU/Linux
   have `struct reg' and `struct fpreg' in <machine/reg.h>.  GNU/Linux
   has the same structures as SunOS 4, but they're in <asm/reg.h>,
   has the same structures as SunOS 4, but they're in <asm/reg.h>,
   which is a kernel header.  As a general rule we avoid including
   which is a kernel header.  As a general rule we avoid including
   GNU/Linux kernel headers.  Fortunately GNU/Linux has a `gregset_t'
   GNU/Linux kernel headers.  Fortunately GNU/Linux has a `gregset_t'
   and a `fpregset_t' that are equivalent to `struct regs' and `struct
   and a `fpregset_t' that are equivalent to `struct regs' and `struct
   fp_status' in <sys/ucontext.h>, which is automatically included by
   fp_status' in <sys/ucontext.h>, which is automatically included by
   <signal.h>.  Settling on using the `gregset_t' and `fpregset_t'
   <signal.h>.  Settling on using the `gregset_t' and `fpregset_t'
   typedefs, providing them for the other systems, therefore solves
   typedefs, providing them for the other systems, therefore solves
   the puzzle.  */
   the puzzle.  */
 
 
#ifdef HAVE_MACHINE_REG_H
#ifdef HAVE_MACHINE_REG_H
#ifdef HAVE_STRUCT_REG
#ifdef HAVE_STRUCT_REG
typedef struct reg gregset_t;
typedef struct reg gregset_t;
typedef struct fpreg fpregset_t;
typedef struct fpreg fpregset_t;
#else 
#else 
typedef struct regs gregset_t;
typedef struct regs gregset_t;
typedef struct fp_status fpregset_t;
typedef struct fp_status fpregset_t;
#endif
#endif
#endif
#endif
 
 
/* Second, we need to remap the BSD ptrace(2) requests to their SunOS
/* Second, we need to remap the BSD ptrace(2) requests to their SunOS
   equivalents.  GNU/Linux already follows SunOS here.  */
   equivalents.  GNU/Linux already follows SunOS here.  */
 
 
#ifndef PTRACE_GETREGS
#ifndef PTRACE_GETREGS
#define PTRACE_GETREGS PT_GETREGS
#define PTRACE_GETREGS PT_GETREGS
#endif
#endif
 
 
#ifndef PTRACE_SETREGS
#ifndef PTRACE_SETREGS
#define PTRACE_SETREGS PT_SETREGS
#define PTRACE_SETREGS PT_SETREGS
#endif
#endif
 
 
#ifndef PTRACE_GETFPREGS
#ifndef PTRACE_GETFPREGS
#define PTRACE_GETFPREGS PT_GETFPREGS
#define PTRACE_GETFPREGS PT_GETFPREGS
#endif
#endif
 
 
#ifndef PTRACE_SETFPREGS
#ifndef PTRACE_SETFPREGS
#define PTRACE_SETFPREGS PT_SETFPREGS
#define PTRACE_SETFPREGS PT_SETFPREGS
#endif
#endif
 
 
/* Register set description.  */
/* Register set description.  */
const struct sparc_gregset *sparc_gregset;
const struct sparc_gregset *sparc_gregset;
void (*sparc_supply_gregset) (const struct sparc_gregset *,
void (*sparc_supply_gregset) (const struct sparc_gregset *,
                              struct regcache *, int , const void *);
                              struct regcache *, int , const void *);
void (*sparc_collect_gregset) (const struct sparc_gregset *,
void (*sparc_collect_gregset) (const struct sparc_gregset *,
                               const struct regcache *, int, void *);
                               const struct regcache *, int, void *);
void (*sparc_supply_fpregset) (struct regcache *, int , const void *);
void (*sparc_supply_fpregset) (struct regcache *, int , const void *);
void (*sparc_collect_fpregset) (const struct regcache *, int , void *);
void (*sparc_collect_fpregset) (const struct regcache *, int , void *);
int (*sparc_gregset_supplies_p) (struct gdbarch *, int);
int (*sparc_gregset_supplies_p) (struct gdbarch *, int);
int (*sparc_fpregset_supplies_p) (struct gdbarch *, int);
int (*sparc_fpregset_supplies_p) (struct gdbarch *, int);
 
 
/* Determine whether `gregset_t' contains register REGNUM.  */
/* Determine whether `gregset_t' contains register REGNUM.  */
 
 
int
int
sparc32_gregset_supplies_p (struct gdbarch *gdbarch, int regnum)
sparc32_gregset_supplies_p (struct gdbarch *gdbarch, int regnum)
{
{
  /* Integer registers.  */
  /* Integer registers.  */
  if ((regnum >= SPARC_G1_REGNUM && regnum <= SPARC_G7_REGNUM)
  if ((regnum >= SPARC_G1_REGNUM && regnum <= SPARC_G7_REGNUM)
      || (regnum >= SPARC_O0_REGNUM && regnum <= SPARC_O7_REGNUM)
      || (regnum >= SPARC_O0_REGNUM && regnum <= SPARC_O7_REGNUM)
      || (regnum >= SPARC_L0_REGNUM && regnum <= SPARC_L7_REGNUM)
      || (regnum >= SPARC_L0_REGNUM && regnum <= SPARC_L7_REGNUM)
      || (regnum >= SPARC_I0_REGNUM && regnum <= SPARC_I7_REGNUM))
      || (regnum >= SPARC_I0_REGNUM && regnum <= SPARC_I7_REGNUM))
    return 1;
    return 1;
 
 
  /* Control registers.  */
  /* Control registers.  */
  if (regnum == SPARC32_PC_REGNUM
  if (regnum == SPARC32_PC_REGNUM
      || regnum == SPARC32_NPC_REGNUM
      || regnum == SPARC32_NPC_REGNUM
      || regnum == SPARC32_PSR_REGNUM
      || regnum == SPARC32_PSR_REGNUM
      || regnum == SPARC32_Y_REGNUM)
      || regnum == SPARC32_Y_REGNUM)
    return 1;
    return 1;
 
 
  return 0;
  return 0;
}
}
 
 
/* Determine whether `fpregset_t' contains register REGNUM.  */
/* Determine whether `fpregset_t' contains register REGNUM.  */
 
 
int
int
sparc32_fpregset_supplies_p (struct gdbarch *gdbarch, int regnum)
sparc32_fpregset_supplies_p (struct gdbarch *gdbarch, int regnum)
{
{
  /* Floating-point registers.  */
  /* Floating-point registers.  */
  if (regnum >= SPARC_F0_REGNUM && regnum <= SPARC_F31_REGNUM)
  if (regnum >= SPARC_F0_REGNUM && regnum <= SPARC_F31_REGNUM)
    return 1;
    return 1;
 
 
  /* Control registers.  */
  /* Control registers.  */
  if (regnum == SPARC32_FSR_REGNUM)
  if (regnum == SPARC32_FSR_REGNUM)
    return 1;
    return 1;
 
 
  return 0;
  return 0;
}
}
 
 
/* Fetch register REGNUM from the inferior.  If REGNUM is -1, do this
/* Fetch register REGNUM from the inferior.  If REGNUM is -1, do this
   for all registers (including the floating-point registers).  */
   for all registers (including the floating-point registers).  */
 
 
void
void
sparc_fetch_inferior_registers (struct target_ops *ops,
sparc_fetch_inferior_registers (struct target_ops *ops,
                                struct regcache *regcache, int regnum)
                                struct regcache *regcache, int regnum)
{
{
  struct gdbarch *gdbarch = get_regcache_arch (regcache);
  struct gdbarch *gdbarch = get_regcache_arch (regcache);
  int pid;
  int pid;
 
 
  /* NOTE: cagney/2002-12-03: This code assumes that the currently
  /* NOTE: cagney/2002-12-03: This code assumes that the currently
     selected light weight processes' registers can be written
     selected light weight processes' registers can be written
     directly into the selected thread's register cache.  This works
     directly into the selected thread's register cache.  This works
     fine when given an 1:1 LWP:thread model (such as found on
     fine when given an 1:1 LWP:thread model (such as found on
     GNU/Linux) but will, likely, have problems when used on an N:1
     GNU/Linux) but will, likely, have problems when used on an N:1
     (userland threads) or N:M (userland multiple LWP) model.  In the
     (userland threads) or N:M (userland multiple LWP) model.  In the
     case of the latter two, the LWP's registers do not necessarily
     case of the latter two, the LWP's registers do not necessarily
     belong to the selected thread (the LWP could be in the middle of
     belong to the selected thread (the LWP could be in the middle of
     executing the thread switch code).
     executing the thread switch code).
 
 
     These functions should instead be paramaterized with an explicit
     These functions should instead be paramaterized with an explicit
     object (struct regcache, struct thread_info?) into which the LWPs
     object (struct regcache, struct thread_info?) into which the LWPs
     registers can be written.  */
     registers can be written.  */
  pid = TIDGET (inferior_ptid);
  pid = TIDGET (inferior_ptid);
  if (pid == 0)
  if (pid == 0)
    pid = PIDGET (inferior_ptid);
    pid = PIDGET (inferior_ptid);
 
 
  if (regnum == SPARC_G0_REGNUM)
  if (regnum == SPARC_G0_REGNUM)
    {
    {
      regcache_raw_supply (regcache, SPARC_G0_REGNUM, NULL);
      regcache_raw_supply (regcache, SPARC_G0_REGNUM, NULL);
      return;
      return;
    }
    }
 
 
  if (regnum == -1 || sparc_gregset_supplies_p (gdbarch, regnum))
  if (regnum == -1 || sparc_gregset_supplies_p (gdbarch, regnum))
    {
    {
      gregset_t regs;
      gregset_t regs;
 
 
      if (ptrace (PTRACE_GETREGS, pid, (PTRACE_TYPE_ARG3) &regs, 0) == -1)
      if (ptrace (PTRACE_GETREGS, pid, (PTRACE_TYPE_ARG3) &regs, 0) == -1)
        perror_with_name (_("Couldn't get registers"));
        perror_with_name (_("Couldn't get registers"));
 
 
      sparc_supply_gregset (sparc_gregset, regcache, -1, &regs);
      sparc_supply_gregset (sparc_gregset, regcache, -1, &regs);
      if (regnum != -1)
      if (regnum != -1)
        return;
        return;
    }
    }
 
 
  if (regnum == -1 || sparc_fpregset_supplies_p (gdbarch, regnum))
  if (regnum == -1 || sparc_fpregset_supplies_p (gdbarch, regnum))
    {
    {
      fpregset_t fpregs;
      fpregset_t fpregs;
 
 
      if (ptrace (PTRACE_GETFPREGS, pid, (PTRACE_TYPE_ARG3) &fpregs, 0) == -1)
      if (ptrace (PTRACE_GETFPREGS, pid, (PTRACE_TYPE_ARG3) &fpregs, 0) == -1)
        perror_with_name (_("Couldn't get floating point status"));
        perror_with_name (_("Couldn't get floating point status"));
 
 
      sparc_supply_fpregset (regcache, -1, &fpregs);
      sparc_supply_fpregset (regcache, -1, &fpregs);
    }
    }
}
}
 
 
void
void
sparc_store_inferior_registers (struct target_ops *ops,
sparc_store_inferior_registers (struct target_ops *ops,
                                struct regcache *regcache, int regnum)
                                struct regcache *regcache, int regnum)
{
{
  struct gdbarch *gdbarch = get_regcache_arch (regcache);
  struct gdbarch *gdbarch = get_regcache_arch (regcache);
  int pid;
  int pid;
 
 
  /* NOTE: cagney/2002-12-02: See comment in fetch_inferior_registers
  /* NOTE: cagney/2002-12-02: See comment in fetch_inferior_registers
     about threaded assumptions.  */
     about threaded assumptions.  */
  pid = TIDGET (inferior_ptid);
  pid = TIDGET (inferior_ptid);
  if (pid == 0)
  if (pid == 0)
    pid = PIDGET (inferior_ptid);
    pid = PIDGET (inferior_ptid);
 
 
  if (regnum == -1 || sparc_gregset_supplies_p (gdbarch, regnum))
  if (regnum == -1 || sparc_gregset_supplies_p (gdbarch, regnum))
    {
    {
      gregset_t regs;
      gregset_t regs;
 
 
      if (ptrace (PTRACE_GETREGS, pid, (PTRACE_TYPE_ARG3) &regs, 0) == -1)
      if (ptrace (PTRACE_GETREGS, pid, (PTRACE_TYPE_ARG3) &regs, 0) == -1)
        perror_with_name (_("Couldn't get registers"));
        perror_with_name (_("Couldn't get registers"));
 
 
      sparc_collect_gregset (sparc_gregset, regcache, regnum, &regs);
      sparc_collect_gregset (sparc_gregset, regcache, regnum, &regs);
 
 
      if (ptrace (PTRACE_SETREGS, pid, (PTRACE_TYPE_ARG3) &regs, 0) == -1)
      if (ptrace (PTRACE_SETREGS, pid, (PTRACE_TYPE_ARG3) &regs, 0) == -1)
        perror_with_name (_("Couldn't write registers"));
        perror_with_name (_("Couldn't write registers"));
 
 
      /* Deal with the stack regs.  */
      /* Deal with the stack regs.  */
      if (regnum == -1 || regnum == SPARC_SP_REGNUM
      if (regnum == -1 || regnum == SPARC_SP_REGNUM
          || (regnum >= SPARC_L0_REGNUM && regnum <= SPARC_I7_REGNUM))
          || (regnum >= SPARC_L0_REGNUM && regnum <= SPARC_I7_REGNUM))
        {
        {
          ULONGEST sp;
          ULONGEST sp;
 
 
          regcache_cooked_read_unsigned (regcache, SPARC_SP_REGNUM, &sp);
          regcache_cooked_read_unsigned (regcache, SPARC_SP_REGNUM, &sp);
          sparc_collect_rwindow (regcache, sp, regnum);
          sparc_collect_rwindow (regcache, sp, regnum);
        }
        }
 
 
      if (regnum != -1)
      if (regnum != -1)
        return;
        return;
    }
    }
 
 
  if (regnum == -1 || sparc_fpregset_supplies_p (gdbarch, regnum))
  if (regnum == -1 || sparc_fpregset_supplies_p (gdbarch, regnum))
    {
    {
      fpregset_t fpregs, saved_fpregs;
      fpregset_t fpregs, saved_fpregs;
 
 
      if (ptrace (PTRACE_GETFPREGS, pid, (PTRACE_TYPE_ARG3) &fpregs, 0) == -1)
      if (ptrace (PTRACE_GETFPREGS, pid, (PTRACE_TYPE_ARG3) &fpregs, 0) == -1)
        perror_with_name (_("Couldn't get floating-point registers"));
        perror_with_name (_("Couldn't get floating-point registers"));
 
 
      memcpy (&saved_fpregs, &fpregs, sizeof (fpregs));
      memcpy (&saved_fpregs, &fpregs, sizeof (fpregs));
      sparc_collect_fpregset (regcache, regnum, &fpregs);
      sparc_collect_fpregset (regcache, regnum, &fpregs);
 
 
      /* Writing the floating-point registers will fail on NetBSD with
      /* Writing the floating-point registers will fail on NetBSD with
         EINVAL if the inferior process doesn't have an FPU state
         EINVAL if the inferior process doesn't have an FPU state
         (i.e. if it didn't use the FPU yet).  Therefore we don't try
         (i.e. if it didn't use the FPU yet).  Therefore we don't try
         to write the registers if nothing changed.  */
         to write the registers if nothing changed.  */
      if (memcmp (&saved_fpregs, &fpregs, sizeof (fpregs)) != 0)
      if (memcmp (&saved_fpregs, &fpregs, sizeof (fpregs)) != 0)
        {
        {
          if (ptrace (PTRACE_SETFPREGS, pid,
          if (ptrace (PTRACE_SETFPREGS, pid,
                      (PTRACE_TYPE_ARG3) &fpregs, 0) == -1)
                      (PTRACE_TYPE_ARG3) &fpregs, 0) == -1)
            perror_with_name (_("Couldn't write floating-point registers"));
            perror_with_name (_("Couldn't write floating-point registers"));
        }
        }
 
 
      if (regnum != -1)
      if (regnum != -1)
        return;
        return;
    }
    }
}
}
 
 


/* Fetch StackGhost Per-Process XOR cookie.  */
/* Fetch StackGhost Per-Process XOR cookie.  */
 
 
LONGEST
LONGEST
sparc_xfer_wcookie (struct target_ops *ops, enum target_object object,
sparc_xfer_wcookie (struct target_ops *ops, enum target_object object,
                    const char *annex, gdb_byte *readbuf,
                    const char *annex, gdb_byte *readbuf,
                    const gdb_byte *writebuf, ULONGEST offset, LONGEST len)
                    const gdb_byte *writebuf, ULONGEST offset, LONGEST len)
{
{
  unsigned long wcookie = 0;
  unsigned long wcookie = 0;
  char *buf = (char *)&wcookie;
  char *buf = (char *)&wcookie;
 
 
  gdb_assert (object == TARGET_OBJECT_WCOOKIE);
  gdb_assert (object == TARGET_OBJECT_WCOOKIE);
  gdb_assert (readbuf && writebuf == NULL);
  gdb_assert (readbuf && writebuf == NULL);
 
 
  if (offset == sizeof (unsigned long))
  if (offset == sizeof (unsigned long))
    return 0;                    /* Signal EOF.  */
    return 0;                    /* Signal EOF.  */
  if (offset > sizeof (unsigned long))
  if (offset > sizeof (unsigned long))
    return -1;
    return -1;
 
 
#ifdef PT_WCOOKIE
#ifdef PT_WCOOKIE
  /* If PT_WCOOKIE is defined (by <sys/ptrace.h>), assume we're
  /* If PT_WCOOKIE is defined (by <sys/ptrace.h>), assume we're
     running on an OpenBSD release that uses StackGhost (3.1 or
     running on an OpenBSD release that uses StackGhost (3.1 or
     later).  Since release 3.6, OpenBSD uses a fully randomized
     later).  Since release 3.6, OpenBSD uses a fully randomized
     cookie.  */
     cookie.  */
  {
  {
    int pid;
    int pid;
 
 
    pid = TIDGET (inferior_ptid);
    pid = TIDGET (inferior_ptid);
    if (pid == 0)
    if (pid == 0)
      pid = PIDGET (inferior_ptid);
      pid = PIDGET (inferior_ptid);
 
 
    /* Sanity check.  The proper type for a cookie is register_t, but
    /* Sanity check.  The proper type for a cookie is register_t, but
       we can't assume that this type exists on all systems supported
       we can't assume that this type exists on all systems supported
       by the code in this file.  */
       by the code in this file.  */
    gdb_assert (sizeof (wcookie) == sizeof (register_t));
    gdb_assert (sizeof (wcookie) == sizeof (register_t));
 
 
    /* Fetch the cookie.  */
    /* Fetch the cookie.  */
    if (ptrace (PT_WCOOKIE, pid, (PTRACE_TYPE_ARG3) &wcookie, 0) == -1)
    if (ptrace (PT_WCOOKIE, pid, (PTRACE_TYPE_ARG3) &wcookie, 0) == -1)
      {
      {
        if (errno != EINVAL)
        if (errno != EINVAL)
          perror_with_name (_("Couldn't get StackGhost cookie"));
          perror_with_name (_("Couldn't get StackGhost cookie"));
 
 
        /* Although PT_WCOOKIE is defined on OpenBSD 3.1 and later,
        /* Although PT_WCOOKIE is defined on OpenBSD 3.1 and later,
           the request wasn't implemented until after OpenBSD 3.4.  If
           the request wasn't implemented until after OpenBSD 3.4.  If
           the kernel doesn't support the PT_WCOOKIE request, assume
           the kernel doesn't support the PT_WCOOKIE request, assume
           we're running on a kernel that uses non-randomized cookies.  */
           we're running on a kernel that uses non-randomized cookies.  */
        wcookie = 0x3;
        wcookie = 0x3;
      }
      }
  }
  }
#endif /* PT_WCOOKIE */
#endif /* PT_WCOOKIE */
 
 
  if (len > sizeof (unsigned long) - offset)
  if (len > sizeof (unsigned long) - offset)
    len = sizeof (unsigned long) - offset;
    len = sizeof (unsigned long) - offset;
 
 
  memcpy (readbuf, buf + offset, len);
  memcpy (readbuf, buf + offset, len);
  return len;
  return len;
}
}
 
 
LONGEST (*inf_ptrace_xfer_partial) (struct target_ops *, enum target_object,
LONGEST (*inf_ptrace_xfer_partial) (struct target_ops *, enum target_object,
                                    const char *, gdb_byte *, const gdb_byte *,
                                    const char *, gdb_byte *, const gdb_byte *,
                                    ULONGEST, LONGEST);
                                    ULONGEST, LONGEST);
 
 
static LONGEST
static LONGEST
sparc_xfer_partial (struct target_ops *ops, enum target_object object,
sparc_xfer_partial (struct target_ops *ops, enum target_object object,
                    const char *annex, gdb_byte *readbuf,
                    const char *annex, gdb_byte *readbuf,
                    const gdb_byte *writebuf, ULONGEST offset, LONGEST len)
                    const gdb_byte *writebuf, ULONGEST offset, LONGEST len)
{
{
  if (object == TARGET_OBJECT_WCOOKIE)
  if (object == TARGET_OBJECT_WCOOKIE)
    return sparc_xfer_wcookie (ops, object, annex, readbuf, writebuf,
    return sparc_xfer_wcookie (ops, object, annex, readbuf, writebuf,
                               offset, len);
                               offset, len);
 
 
  return inf_ptrace_xfer_partial (ops, object, annex, readbuf, writebuf,
  return inf_ptrace_xfer_partial (ops, object, annex, readbuf, writebuf,
                                  offset, len);
                                  offset, len);
}
}


/* Create a prototype generic SPARC target.  The client can override
/* Create a prototype generic SPARC target.  The client can override
   it with local methods.  */
   it with local methods.  */
 
 
struct target_ops *
struct target_ops *
sparc_target (void)
sparc_target (void)
{
{
  struct target_ops *t;
  struct target_ops *t;
 
 
  t = inf_ptrace_target ();
  t = inf_ptrace_target ();
  t->to_fetch_registers = sparc_fetch_inferior_registers;
  t->to_fetch_registers = sparc_fetch_inferior_registers;
  t->to_store_registers = sparc_store_inferior_registers;
  t->to_store_registers = sparc_store_inferior_registers;
  inf_ptrace_xfer_partial = t->to_xfer_partial;
  inf_ptrace_xfer_partial = t->to_xfer_partial;
  t->to_xfer_partial = sparc_xfer_partial;
  t->to_xfer_partial = sparc_xfer_partial;
  return t;
  return t;
}
}
 
 


/* Provide a prototype to silence -Wmissing-prototypes.  */
/* Provide a prototype to silence -Wmissing-prototypes.  */
void _initialize_sparc_nat (void);
void _initialize_sparc_nat (void);
 
 
void
void
_initialize_sparc_nat (void)
_initialize_sparc_nat (void)
{
{
  /* Deafult to using SunOS 4 register sets.  */
  /* Deafult to using SunOS 4 register sets.  */
  if (sparc_gregset == NULL)
  if (sparc_gregset == NULL)
    sparc_gregset = &sparc32_sunos4_gregset;
    sparc_gregset = &sparc32_sunos4_gregset;
  if (sparc_supply_gregset == NULL)
  if (sparc_supply_gregset == NULL)
    sparc_supply_gregset = sparc32_supply_gregset;
    sparc_supply_gregset = sparc32_supply_gregset;
  if (sparc_collect_gregset == NULL)
  if (sparc_collect_gregset == NULL)
    sparc_collect_gregset = sparc32_collect_gregset;
    sparc_collect_gregset = sparc32_collect_gregset;
  if (sparc_supply_fpregset == NULL)
  if (sparc_supply_fpregset == NULL)
    sparc_supply_fpregset = sparc32_supply_fpregset;
    sparc_supply_fpregset = sparc32_supply_fpregset;
  if (sparc_collect_fpregset == NULL)
  if (sparc_collect_fpregset == NULL)
    sparc_collect_fpregset = sparc32_collect_fpregset;
    sparc_collect_fpregset = sparc32_collect_fpregset;
  if (sparc_gregset_supplies_p == NULL)
  if (sparc_gregset_supplies_p == NULL)
    sparc_gregset_supplies_p = sparc32_gregset_supplies_p;
    sparc_gregset_supplies_p = sparc32_gregset_supplies_p;
  if (sparc_fpregset_supplies_p == NULL)
  if (sparc_fpregset_supplies_p == NULL)
    sparc_fpregset_supplies_p = sparc32_fpregset_supplies_p;
    sparc_fpregset_supplies_p = sparc32_fpregset_supplies_p;
}
}
 
 

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