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[/] [or1k/] [trunk/] [gdb-5.3/] [gdb/] [ppcnbsd-nat.c] - Blame information for rev 1765

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Line No. Rev Author Line
1 1181 sfurman
/* Native-dependent code for PowerPC's running NetBSD, for GDB.
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   Copyright 2002 Free Software Foundation, Inc.
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   Contributed by Wasabi Systems, Inc.
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   This file is part of GDB.
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   This program is free software; you can redistribute it and/or modify
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   it under the terms of the GNU General Public License as published by
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   the Free Software Foundation; either version 2 of the License, or
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   (at your option) any later version.
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   This program is distributed in the hope that it will be useful,
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   but WITHOUT ANY WARRANTY; without even the implied warranty of
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   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
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   GNU General Public License for more details.
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   You should have received a copy of the GNU General Public License
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   along with this program; if not, write to the Free Software
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   Foundation, Inc., 59 Temple Place - Suite 330,
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   Boston, MA 02111-1307, USA.  */
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#include <sys/types.h>
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#include <sys/ptrace.h>
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#include <machine/reg.h>
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#include "defs.h"
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#include "inferior.h"
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#include "ppc-tdep.h"
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#include "ppcnbsd-tdep.h"
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/* Returns true if PT_GETREGS fetches this register.  */
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static int
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getregs_supplies (int regno)
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{
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  struct gdbarch_tdep *tdep = gdbarch_tdep (current_gdbarch);
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  return ((regno >= 0 && regno <= 31)
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          || regno == tdep->ppc_lr_regnum
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          || regno == tdep->ppc_cr_regnum
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          || regno == tdep->ppc_xer_regnum
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          || regno == tdep->ppc_ctr_regnum
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          || regno == PC_REGNUM);
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}
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/* Like above, but for PT_GETFPREGS.  */
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static int
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getfpregs_supplies (int regno)
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{
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  struct gdbarch_tdep *tdep = gdbarch_tdep (current_gdbarch);
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  return ((regno >= FP0_REGNUM && regno <= FP0_REGNUM + 31)
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          || regno == tdep->ppc_fpscr_regnum);
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}
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void
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fetch_inferior_registers (int regno)
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{
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  if (regno == -1 || getregs_supplies (regno))
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    {
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      struct reg regs;
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      if (ptrace (PT_GETREGS, PIDGET (inferior_ptid),
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                  (PTRACE_ARG3_TYPE) &regs, 0) == -1)
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        perror_with_name ("Couldn't get registers");
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      ppcnbsd_supply_reg ((char *) &regs, regno);
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      if (regno != -1)
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        return;
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    }
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  if (regno == -1 || getfpregs_supplies (regno))
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    {
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      struct fpreg fpregs;
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      if (ptrace (PT_GETFPREGS, PIDGET (inferior_ptid),
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                  (PTRACE_ARG3_TYPE) &fpregs, 0) == -1)
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        perror_with_name ("Couldn't get FP registers");
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      ppcnbsd_supply_fpreg ((char *) &fpregs, regno);
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      if (regno != -1)
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        return;
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    }
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}
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void
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store_inferior_registers (int regno)
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{
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  if (regno == -1 || getregs_supplies (regno))
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    {
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      struct reg regs;
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      if (ptrace (PT_GETREGS, PIDGET (inferior_ptid),
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                  (PTRACE_ARG3_TYPE) &regs, 0) == -1)
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        perror_with_name ("Couldn't get registers");
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      ppcnbsd_fill_reg ((char *) &regs, regno);
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      if (ptrace (PT_SETREGS, PIDGET (inferior_ptid),
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                  (PTRACE_ARG3_TYPE) &regs, 0) == -1)
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        perror_with_name ("Couldn't write registers");
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      if (regno != -1)
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        return;
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    }
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  if (regno == -1 || getfpregs_supplies (regno))
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    {
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      struct fpreg fpregs;
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      if (ptrace (PT_GETFPREGS, PIDGET (inferior_ptid),
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                  (PTRACE_ARG3_TYPE) &fpregs, 0) == -1)
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        perror_with_name ("Couldn't get FP registers");
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      ppcnbsd_fill_fpreg ((char *) &fpregs, regno);
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      if (ptrace (PT_SETFPREGS, PIDGET (inferior_ptid),
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                  (PTRACE_ARG3_TYPE) &fpregs, 0) == -1)
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        perror_with_name ("Couldn't set FP registers");
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    }
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}

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