* arm-tdep.h: Add multiple inclusion protection.

(struct gdbarch): Add forward declaration. (armobsd_regset_from_core_section): New prototype. * armbsd-tdep.c: New file. * armobsd-tdep.c: Include "gdb_string.h". (armobsd_init_abi): Set regset_from_core_section. (armobsd_core_osabi_sniffer): New function. (_initialize_armobsd_tdep): Register armobsd_core_osabi_sniffer. * Makefile.in (ALLDEPFILES): Add armbsd-tdep.c. (armbsd-tdep.o): New dependency. (armnbsd-tdep.o): Update dependencies. * config/arm/obsd.mt (TDEPFILES): Add armbsd-tdep.o and corelow.o.
2006-08-02 21:32:37 +00:00 · 2006-08-02 21:32:37 +00:00 · 47ccd04848
commit 47ccd04848
parent 9d7cbccda0
6 changed files with 185 additions and 3 deletions
--- a/gdb/armbsd-tdep.c
+++ b/gdb/armbsd-tdep.c
@ -0,0 +1,129 @@
+/* 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;
+}