1 files changed, 129 insertions, 0 deletions
diff --git a/gdb/amd64nbsd-tdep.c b/gdb/amd64nbsd-tdep.c
new file mode 100644
index 0000000..5500ed1
--- /dev/null
+++ b/gdb/amd64nbsd-tdep.c
@@ -0,0 +1,129 @@
+/* Target-dependent code for NetBSD/amd64.
+
+   Copyright 2003 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 "arch-utils.h"
+#include "frame.h"
+#include "gdbcore.h"
+#include "osabi.h"
+
+#include "gdb_assert.h"
+
+#include "nbsd-tdep.h"
+#include "x86-64-tdep.h"
+
+/* Support for signal handlers.  */
+
+/* Assuming NEXT_FRAME is for a frame following a BSD sigtramp
+   routine, return the address of the associated sigcontext structure.  */
+
+static CORE_ADDR
+amd64nbsd_sigcontext_addr (struct frame_info *next_frame)
+{
+  CORE_ADDR sp;
+
+  /* The stack pointer points at `struct sigcontext' upon entry of a
+     signal trampoline.  */
+  sp = frame_unwind_register_unsigned (next_frame, X86_64_RSP_REGNUM);
+  return sp;
+}
+
+/* NetBSD 2.0 or later.  */
+
+/* Mapping between the general-purpose registers in `struct reg'
+   format and GDB's register cache layout.  */
+
+/* From <machine/reg.h>.  */
+int amd64nbsd_r_reg_offset[] =
+{
+  14 * 8,			/* %rax */
+  13 * 8,			/* %rbx */
+  3 * 8,			/* %rcx */
+  2 * 8,			/* %rdx */
+  1 * 8,			/* %rsi */
+  0 * 8,			/* %rdi */
+  12 * 8,			/* %rbp */
+  24 * 8,			/* %rsp */
+  4 * 8,			/* %r8 .. */
+  5 * 8,
+  6 * 8,
+  7 * 8,
+  8 * 8,
+  9 * 8,
+  10 * 8,
+  11 * 8,			/* ... %r15 */
+  21 * 8,			/* %rip */
+  23 * 8,			/* %eflags */
+  18 * 8,			/* %ds */
+  17 * 8,			/* %es */
+  16 * 8,			/* %fs */
+  15 * 8			/* %gs */
+};
+
+static void
+amd64nbsd_init_abi (struct gdbarch_info info, struct gdbarch *gdbarch)
+{
+  struct gdbarch_tdep *tdep = gdbarch_tdep (gdbarch);
+  int *sc_reg_offset;
+  int i;
+
+  /* Initialize general-purpose register set details first.  */
+  tdep->gregset_reg_offset = amd64nbsd_r_reg_offset;
+  tdep->gregset_num_regs = ARRAY_SIZE (amd64nbsd_r_reg_offset);
+  tdep->sizeof_gregset = 26 * 8;
+
+  x86_64_init_abi (info, gdbarch);
+
+  tdep->jb_pc_offset = 7 * 8;
+
+  /* NetBSD has its own convention for signal trampolines.  */
+  set_gdbarch_pc_in_sigtramp (gdbarch, nbsd_pc_in_sigtramp);
+
+  /* Initialize the array with register offsets in `struct
+     sigcontext'.  This `struct sigcontext' has an sc_mcontext member
+     at offset 32, and in <machine/reg.h> we have an explicit comment
+     saying that `struct reg' is the same as mcontext.__gregs.  */
+  tdep->sc_num_regs = ARRAY_SIZE (amd64nbsd_r_reg_offset);
+  tdep->sc_reg_offset = XCALLOC (tdep->sc_num_regs, int);
+  for (i = 0; i < tdep->sc_num_regs; i++)
+    {
+      if (amd64nbsd_r_reg_offset[i] < 0)
+	tdep->sc_reg_offset[i] = -1;
+      else
+	tdep->sc_reg_offset[i] = 32 + amd64nbsd_r_reg_offset[i];
+    }
+
+  tdep->sigcontext_addr = amd64nbsd_sigcontext_addr;
+}
+
+
+/* Provide a prototype to silence -Wmissing-prototypes.  */
+void _initialize_amd64nbsd_tdep (void);
+
+void
+_initialize_amd64nbsd_ndep (void)
+{
+  /* The NetBSD/amd64 native dependent code makes this assumption.  */
+  gdb_assert (ARRAY_SIZE (amd64nbsd_r_reg_offset) == X86_64_NUM_GREGS);
+
+  gdbarch_register_osabi (bfd_arch_i386, bfd_mach_x86_64,
+			  GDB_OSABI_NETBSD_ELF, amd64nbsd_init_abi);
+}