1 files changed, 113 insertions, 0 deletions
diff --git a/gdb/gdbserver/linux-ppc64-low.c b/gdb/gdbserver/linux-ppc64-low.c
new file mode 100644
index 00000000000..f88db35cb99
--- /dev/null
+++ b/gdb/gdbserver/linux-ppc64-low.c
@@ -0,0 +1,113 @@
+/* gdbserver low-level interface for GNU/Linux running on 64-bit PowerPC.
+   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 "server.h"
+#include "linux-low.h"
+
+#include <asm/ptrace.h>
+
+#define ppc64_num_regs (sizeof (ppc64_regmap) / sizeof (ppc64_regmap[0]))
+
+#define FPR(n) ((PT_FPR0 + (n)) * 8)
+
+/* Currently, don't check/send MQ.  */
+static int ppc64_regmap[] =
+  {
+    PT_R0  * 8,    PT_R1  * 8,    PT_R2  * 8,    PT_R3  * 8,
+    PT_R4  * 8,    PT_R5  * 8,    PT_R6  * 8,    PT_R7  * 8,
+    PT_R8  * 8,    PT_R9  * 8,    PT_R10 * 8,    PT_R11 * 8,
+    PT_R12 * 8,    PT_R13 * 8,    PT_R14 * 8,    PT_R15 * 8,
+    PT_R16 * 8,    PT_R17 * 8,    PT_R18 * 8,    PT_R19 * 8,
+    PT_R20 * 8,    PT_R21 * 8,    PT_R22 * 8,    PT_R23 * 8,
+    PT_R24 * 8,    PT_R25 * 8,    PT_R26 * 8,    PT_R27 * 8,
+    PT_R28 * 8,    PT_R29 * 8,    PT_R30 * 8,    PT_R31 * 8,
+    FPR (0),       FPR (1),       FPR (2),       FPR (3),
+    FPR (4),       FPR (5),       FPR (6),       FPR (7),
+    FPR (8),       FPR (9),       FPR (10),      FPR (11),
+    FPR (12),      FPR (13),      FPR (14),      FPR (15),
+    FPR (16),      FPR (17),      FPR (18),      FPR (19),
+    FPR (20),      FPR (21),      FPR (22),      FPR (23),
+    FPR (24),      FPR (25),      FPR (26),      FPR (27),
+    FPR (28),      FPR (29),      FPR (30),      FPR (31),
+    PT_NIP * 8,    PT_MSR * 8,    PT_CCR * 8,    PT_LNK * 8,
+    PT_CTR * 8,    PT_XER * 8,    PT_FPSCR * 8,
+  };
+
+static int
+ppc64_cannot_store_register (int regno)
+{
+  return 0;
+}
+
+static int
+ppc64_cannot_fetch_register (int regno)
+{
+  return 0;
+}
+
+static CORE_ADDR
+ppc64_get_pc (void)
+{
+  unsigned long pc;
+
+  collect_register_by_name ("pc", &pc);
+  return (CORE_ADDR) pc;
+}
+
+static void
+ppc64_set_pc (CORE_ADDR pc)
+{
+  unsigned long newpc = pc;
+
+  supply_register_by_name ("pc", &newpc);
+}
+
+/* Correct in either endianness.  
+   This instruction is "twge r2, r2", which GDB uses as a software
+   breakpoint.  */
+static const unsigned int ppc64_breakpoint = 0x7d821008;
+#define ppc64_breakpoint_len 4
+
+static int
+ppc64_breakpoint_at (CORE_ADDR where)
+{
+  unsigned int insn;
+
+  (*the_target->read_memory) (where, (char *) &insn, 4);
+  if (insn == ppc64_breakpoint)
+    return 1;
+  /* If necessary, recognize more trap instructions here.  GDB only uses the
+     one.  */
+  return 0;
+}
+
+struct linux_target_ops the_low_target = {
+  ppc64_num_regs,
+  ppc64_regmap,
+  ppc64_cannot_fetch_register,
+  ppc64_cannot_store_register,
+  ppc64_get_pc,
+  ppc64_set_pc,
+  (const char *) &ppc64_breakpoint,
+  ppc64_breakpoint_len,
+  NULL,
+  0,
+  ppc64_breakpoint_at,
+};