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jeremybenn |
/* Native-dependent code for NetBSD/sh.
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Copyright (C) 2002, 2003, 2004, 2006, 2007, 2008, 2009, 2010
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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 3 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, see <http://www.gnu.org/licenses/>. */
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#include "defs.h"
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#include "inferior.h"
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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 "sh-tdep.h"
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#include "inf-ptrace.h"
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#include "regcache.h"
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/* Determine if PT_GETREGS fetches this register. */
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#define GETREGS_SUPPLIES(gdbarch, regno) \
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(((regno) >= R0_REGNUM && (regno) <= (R0_REGNUM + 15)) \
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|| (regno) == gdbarch_pc_regnum (gdbarch) || (regno) == PR_REGNUM \
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|| (regno) == MACH_REGNUM || (regno) == MACL_REGNUM \
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|| (regno) == SR_REGNUM)
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/* Sizeof `struct reg' in <machine/reg.h>. */
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#define SHNBSD_SIZEOF_GREGS (21 * 4)
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static void
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shnbsd_fetch_inferior_registers (struct target_ops *ops,
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struct regcache *regcache, int regno)
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{
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if (regno == -1 || GETREGS_SUPPLIES (get_regcache_arch (regcache), regno))
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{
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struct reg inferior_registers;
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if (ptrace (PT_GETREGS, PIDGET (inferior_ptid),
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(PTRACE_TYPE_ARG3) &inferior_registers, 0) == -1)
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perror_with_name (_("Couldn't get registers"));
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sh_corefile_supply_regset (&sh_corefile_gregset, regcache, regno,
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(char *) &inferior_registers,
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SHNBSD_SIZEOF_GREGS);
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if (regno != -1)
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return;
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}
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}
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static void
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shnbsd_store_inferior_registers (struct target_ops *ops,
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struct regcache *regcache, int regno)
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{
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if (regno == -1 || GETREGS_SUPPLIES (get_regcache_arch (regcache), regno))
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{
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struct reg inferior_registers;
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if (ptrace (PT_GETREGS, PIDGET (inferior_ptid),
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(PTRACE_TYPE_ARG3) &inferior_registers, 0) == -1)
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perror_with_name (_("Couldn't get registers"));
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sh_corefile_collect_regset (&sh_corefile_gregset, regcache, regno,
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(char *) &inferior_registers,
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SHNBSD_SIZEOF_GREGS);
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if (ptrace (PT_SETREGS, PIDGET (inferior_ptid),
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(PTRACE_TYPE_ARG3) &inferior_registers, 0) == -1)
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perror_with_name (_("Couldn't set registers"));
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if (regno != -1)
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return;
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}
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}
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/* Provide a prototype to silence -Wmissing-prototypes. */
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void _initialize_shnbsd_nat (void);
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void
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_initialize_shnbsd_nat (void)
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{
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struct target_ops *t;
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t = inf_ptrace_target ();
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t->to_fetch_registers = shnbsd_fetch_inferior_registers;
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t->to_store_registers = shnbsd_store_inferior_registers;
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add_target (t);
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}
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