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-rw-r--r--gdb/armbsd-tdep.c129
1 files changed, 129 insertions, 0 deletions
diff --git a/gdb/armbsd-tdep.c b/gdb/armbsd-tdep.c
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+/* Target-dependent code for ARM BSD's.
+
+ Copyright (C) 2006 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 2 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, write to the Free Software
+ Foundation, Inc., 51 Franklin Street, Fifth Floor,
+ Boston, MA 02110-1301, USA. */
+
+#include "defs.h"
+#include "osabi.h"
+#include "regcache.h"
+#include "regset.h"
+
+#include "gdb_assert.h"
+#include "gdb_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)
+
+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;
+}