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128 lines
3.4 KiB
C
128 lines
3.4 KiB
C
/* Target-dependent code for ARM BSD's.
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Copyright (C) 2006-2014 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 <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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static 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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