2002-06-11 Daniel Jacobowitz <drow@mvista.com>

[deliverable/binutils-gdb.git] / gdb / gdbserver / linux-arm-low.c

diff --git a/gdb/gdbserver/linux-arm-low.c b/gdb/gdbserver/linux-arm-low.c
index 2958fdf312938cc4640657f930716e59aa0b5dd8..07e2792837c4ca9085666d8845a02421369372c5 100644 (file)
--- a/gdb/gdbserver/linux-arm-low.c
+++ b/gdb/gdbserver/linux-arm-low.c
@@ -45,9 +45,49 @@ arm_cannot_fetch_register (int regno)
   return (regno >= arm_num_regs);
 }
 
+static CORE_ADDR
+arm_get_pc ()
+{
+  unsigned long pc;
+  collect_register_by_name ("pc", &pc);
+  return pc;
+}
+
+static void
+arm_set_pc (CORE_ADDR pc)
+{
+  unsigned long newpc = pc;
+  supply_register_by_name ("pc", &newpc);
+}
+
+/* Correct in either endianness.  We do not support Thumb yet.  */
+static const unsigned long arm_breakpoint = 0xef9f0001;
+#define arm_breakpoint_len 4
+
+static int
+arm_breakpoint_at (CORE_ADDR where)
+{
+  unsigned long insn;
+
+  (*the_target->read_memory) (where, (char *) &insn, 4);
+  if (insn == arm_breakpoint)
+    return 1;
+
+  /* If necessary, recognize more trap instructions here.  GDB only uses the
+     one.  */
+  return 0;
+}
+
 struct linux_target_ops the_low_target = {
   arm_num_regs,
   arm_regmap,
   arm_cannot_fetch_register,
   arm_cannot_store_register,
+  arm_get_pc,
+  arm_set_pc,
+  (const char *) &arm_breakpoint,
+  arm_breakpoint_len,
+  NULL,
+  0,
+  arm_breakpoint_at,
 };