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[/] [openrisc/] [trunk/] [gnu-src/] [gdb-6.8/] [gdb/] [armbsd-tdep.c] - Blame information for rev 280

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1 24 jeremybenn
/* Target-dependent code for ARM BSD's.
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   Copyright (C) 2006, 2007, 2008 Free Software Foundation, 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 "osabi.h"
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#include "regcache.h"
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#include "regset.h"
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#include "gdb_assert.h"
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#include "gdb_string.h"
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#include "arm-tdep.h"
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/* Core file support.  */
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/* Sizeof `struct reg' in <machine/reg.h>.  */
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#define ARMBSD_SIZEOF_GREGS     (17 * 4)
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/* Sizeof `struct fpreg' in <machine/reg.h.  */
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#define ARMBSD_SIZEOF_FPREGS    ((1 + (8 * 3)) * 4)
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int
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armbsd_fpreg_offset (int regnum)
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{
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  if (regnum == ARM_FPS_REGNUM)
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    return 0;
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  return 4 + (regnum - ARM_F0_REGNUM) * 12;
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}
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/* Supply register REGNUM from the buffer specified by FPREGS and LEN
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   in the floating-point register set REGSET to register cache
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   REGCACHE.  If REGNUM is -1, do this for all registers in REGSET.  */
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static void
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armbsd_supply_fpregset (const struct regset *regset,
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                        struct regcache *regcache,
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                        int regnum, const void *fpregs, size_t len)
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{
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  const gdb_byte *regs = fpregs;
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  int i;
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  gdb_assert (len >= ARMBSD_SIZEOF_FPREGS);
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  for (i = ARM_F0_REGNUM; i <= ARM_FPS_REGNUM; i++)
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    {
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      if (regnum == i || regnum == -1)
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        regcache_raw_supply (regcache, i, regs + armbsd_fpreg_offset (i));
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    }
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}
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/* Supply register REGNUM from the buffer specified by GREGS and LEN
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   in the general-purpose register set REGSET to register cache
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   REGCACHE.  If REGNUM is -1, do this for all registers in REGSET.  */
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static void
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armbsd_supply_gregset (const struct regset *regset,
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                       struct regcache *regcache,
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                       int regnum, const void *gregs, size_t len)
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{
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  const gdb_byte *regs = gregs;
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  int i;
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  gdb_assert (len >= ARMBSD_SIZEOF_GREGS);
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  for (i = ARM_A1_REGNUM; i <= ARM_PC_REGNUM; i++)
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    {
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      if (regnum == i || regnum == -1)
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        regcache_raw_supply (regcache, i, regs + i * 4);
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    }
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  if (regnum == ARM_PS_REGNUM || regnum == -1)
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    regcache_raw_supply (regcache, i, regs + 16 * 4);
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  if (len >= ARMBSD_SIZEOF_GREGS + ARMBSD_SIZEOF_FPREGS)
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    {
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      regs += ARMBSD_SIZEOF_GREGS;
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      len -= ARMBSD_SIZEOF_GREGS;
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      armbsd_supply_fpregset (regset, regcache, regnum, regs, len);
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    }
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}
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/* ARM register sets.  */
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static struct regset armbsd_gregset =
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{
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  NULL,
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  armbsd_supply_gregset
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};
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static struct regset armbsd_fpregset =
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{
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  NULL,
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  armbsd_supply_fpregset
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};
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/* Return the appropriate register set for the core section identified
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   by SECT_NAME and SECT_SIZE.  */
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const struct regset *
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armbsd_regset_from_core_section (struct gdbarch *gdbarch,
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                                 const char *sect_name, size_t sect_size)
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{
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  if (strcmp (sect_name, ".reg") == 0 && sect_size >= ARMBSD_SIZEOF_GREGS)
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    return &armbsd_gregset;
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  if (strcmp (sect_name, ".reg2") == 0 && sect_size >= ARMBSD_SIZEOF_FPREGS)
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    return &armbsd_fpregset;
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  return NULL;
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}

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