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/* Target-dependent code for ARM BSD's.
Copyright (C) 2006-2014 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 3 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, see <http://www.gnu.org/licenses/>. */
#include "defs.h"
#include "osabi.h"
#include "regcache.h"
#include "regset.h"
#include "gdb_assert.h"
#include <string.h>
#include "arm-tdep.h"
/* Core file support. */
/* Sizeof `struct reg' in <machine/reg.h>. */
#define ARMBSD_SIZEOF_GREGS (17 * 4)
/* Sizeof `struct fpreg' in <machine/reg.h. */
#define ARMBSD_SIZEOF_FPREGS ((1 + (8 * 3)) * 4)
static int
armbsd_fpreg_offset (int regnum)
{
if (regnum == ARM_FPS_REGNUM)
return 0;
return 4 + (regnum - ARM_F0_REGNUM) * 12;
}
/* Supply register REGNUM from the buffer specified by FPREGS and LEN
in the floating-point register set REGSET to register cache
REGCACHE. If REGNUM is -1, do this for all registers in REGSET. */
static void
armbsd_supply_fpregset (const struct regset *regset,
struct regcache *regcache,
int regnum, const void *fpregs, size_t len)
{
const gdb_byte *regs = fpregs;
int i;
gdb_assert (len >= ARMBSD_SIZEOF_FPREGS);
for (i = ARM_F0_REGNUM; i <= ARM_FPS_REGNUM; i++)
{
if (regnum == i || regnum == -1)
regcache_raw_supply (regcache, i, regs + armbsd_fpreg_offset (i));
}
}
/* Supply register REGNUM from the buffer specified by GREGS and LEN
in the general-purpose register set REGSET to register cache
REGCACHE. If REGNUM is -1, do this for all registers in REGSET. */
static void
armbsd_supply_gregset (const struct regset *regset,
struct regcache *regcache,
int regnum, const void *gregs, size_t len)
{
const gdb_byte *regs = gregs;
int i;
gdb_assert (len >= ARMBSD_SIZEOF_GREGS);
for (i = ARM_A1_REGNUM; i <= ARM_PC_REGNUM; i++)
{
if (regnum == i || regnum == -1)
regcache_raw_supply (regcache, i, regs + i * 4);
}
if (regnum == ARM_PS_REGNUM || regnum == -1)
regcache_raw_supply (regcache, i, regs + 16 * 4);
if (len >= ARMBSD_SIZEOF_GREGS + ARMBSD_SIZEOF_FPREGS)
{
regs += ARMBSD_SIZEOF_GREGS;
len -= ARMBSD_SIZEOF_GREGS;
armbsd_supply_fpregset (regset, regcache, regnum, regs, len);
}
}
/* ARM register sets. */
static struct regset armbsd_gregset =
{
NULL,
armbsd_supply_gregset
};
static struct regset armbsd_fpregset =
{
NULL,
armbsd_supply_fpregset
};
/* Return the appropriate register set for the core section identified
by SECT_NAME and SECT_SIZE. */
const struct regset *
armbsd_regset_from_core_section (struct gdbarch *gdbarch,
const char *sect_name, size_t sect_size)
{
if (strcmp (sect_name, ".reg") == 0 && sect_size >= ARMBSD_SIZEOF_GREGS)
return &armbsd_gregset;
if (strcmp (sect_name, ".reg2") == 0 && sect_size >= ARMBSD_SIZEOF_FPREGS)
return &armbsd_fpregset;
return NULL;
}
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