Add OpenBSD/powerpc support.

* NEWS (New native configurations): Mention OpenBSD/powerpc.
* ppc-tdep.h (struct ppc_reg_offsets): New structure.
(ppc_supply_gregset, ppc_supply_fpregset, ppc_collect_gregset)
(ppc_collect_fpregset): New prototypes.
* ppcobsd-nat.c: New file.
* ppcobsd-tdep.c: New file.
* ppcobsd-tdep.h: New file.
* rs6000-tdep.c: Include "regset.h".
(ppc_supply_reg, ppc_collect_reg, ppc_supply_gregset)
(ppc_supply_fpregset, ppc_collect_gregset, ppc_collect_fpregset):
New functions.
* Makefile.in (ALLDEPFILES): Add pccobsd-nat.c and ppcobsd-tdep.c.
(ppcobsd-nat.o, ppcobsd-tdep.o): New dependencies.
(rs6000-tdep.o): Update dependencies.
* configure.host: Add powerpc-*-openbsd.
* configure.tgt: Add powerpc-*-openbsd.
* config/powerpc/obsd.mh: New file.
* config/powerpc/nm-obsd.h: New file.
* config/powerpc/obsd.mt: New file.

1 files changed, 97 insertions, 0 deletions

diff --git a/gdb/ppcobsd-nat.c b/gdb/ppcobsd-nat.c
new file mode 100644
index 0000000..5f43484
--- /dev/null
+++ b/gdb/ppcobsd-nat.c
@@ -0,0 +1,97 @@
+/* Native-dependent code for OpenBSD/powerpc.
+
+   Copyright 2004 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., 59 Temple Place - Suite 330,
+   Boston, MA 02111-1307, USA.  */
+
+#include "defs.h"
+#include "inferior.h"
+#include "regcache.h"
+
+#include <stddef.h>
+#include <sys/types.h>
+#include <sys/ptrace.h>
+#include <machine/reg.h>
+
+#include "ppcobsd-tdep.h"
+
+/* OpenBSD/powerpc doesn't have PT_GETFPREGS/PT_SETFPREGS like
+   NetBSD/powerpc and FreeBSD/powerpc.  */
+
+/* Fetch register REGNUM from the inferior.  If REGNUM is -1, do this
+   for all registers.  */
+
+void
+fetch_inferior_registers (int regnum)
+{
+  struct reg regs;
+
+  if (ptrace (PT_GETREGS, PIDGET (inferior_ptid),
+	      (PTRACE_ARG3_TYPE) &regs, 0) == -1)
+    perror_with_name ("Couldn't get registers");
+
+  ppcobsd_supply_gregset (&ppcobsd_gregset, current_regcache, -1,
+			  &regs, sizeof regs);
+}
+
+/* Store register REGNUM back into the inferior.  If REGNUM is -1, do
+   this for all registers.  */
+
+void
+store_inferior_registers (int regnum)
+{
+  struct reg regs;
+
+  if (ptrace (PT_GETREGS, PIDGET (inferior_ptid),
+	      (PTRACE_ARG3_TYPE) &regs, 0) == -1)
+    perror_with_name ("Couldn't get registers");
+
+  ppcobsd_collect_gregset (&ppcobsd_gregset, current_regcache,
+			   regnum, &regs, sizeof regs);
+
+  if (ptrace (PT_SETREGS, PIDGET (inferior_ptid),
+	      (PTRACE_ARG3_TYPE) &regs, 0) == -1)
+    perror_with_name ("Couldn't write registers");
+}
+
+
+/* Provide a prototype to silence -Wmissing-prototypes.  */
+void _initialize_ppcobsd_nat (void);
+
+void
+_initialize_ppcobsd_nat (void)
+{
+  /* General-purpose registers.  */
+  ppcobsd_reg_offsets.r0_offset = offsetof (struct reg, gpr);
+  ppcobsd_reg_offsets.pc_offset = offsetof (struct reg, pc);
+  ppcobsd_reg_offsets.ps_offset = offsetof (struct reg, ps);
+  ppcobsd_reg_offsets.cr_offset = offsetof (struct reg, cnd);
+  ppcobsd_reg_offsets.lr_offset = offsetof (struct reg, lr);
+  ppcobsd_reg_offsets.ctr_offset = offsetof (struct reg, cnt);
+  ppcobsd_reg_offsets.xer_offset = offsetof (struct reg, xer);
+  ppcobsd_reg_offsets.mq_offset = offsetof (struct reg, mq);
+
+  /* Floating-point registers.  */
+  ppcobsd_reg_offsets.f0_offset = offsetof (struct reg, fpr);
+  ppcobsd_reg_offsets.fpscr_offset = -1;
+
+  /* AltiVec registers.  */
+  ppcobsd_reg_offsets.vr0_offset = offsetof (struct vreg, vreg);
+  ppcobsd_reg_offsets.vscr_offset = offsetof (struct vreg, vscr);
+  ppcobsd_reg_offsets.vrsave_offset = offsetof (struct vreg, vrsave);
+}