java-insns.h (enum java_code): Add op_breakpoint.

* include/java-insns.h (enum java_code): Add op_breakpoint.
        * include/java-interp.h (_Jv_InterpMethod): Declare breakpoint_insn.
        [INTERPRETER]: Declare _Jv_InterpMethod::bp_insn_slot.
        [!INTERPRETER]: Declare _Jv_InterpMethod::bp_insn_opcode.
        (install_break): Declare.
        * interpret.cc (breakpoint_insn): Define breakpoint insn.
        (compile): Add op_breakpoint to "can't happen" cases.
        [INTERPRETER] Initialize breakpoint insn if necessary.
        (install_break): New method.
        * interpret-run.cc: Add op_breakpoint to insn_targets.
        Add insn_breakpoint label.
        * verify.cc (branch_prepass): Add op_breakpoint to unrecognized
        opcodes section of switch statement.
        (verify_instructions_0): Likewise.

From-SVN: r117734

libjava/include/java-interp.h

@@ -133,6 +133,14 @@ struct  _Jv_LineTableEntry
 
 class _Jv_InterpMethod : public _Jv_MethodBase
 {
+  // Breakpoint instruction
+  static pc_t breakpoint_insn;
+#ifdef DIRECT_THREADED
+  static insn_slot bp_insn_slot;
+#else
+  static unsigned char bp_insn_opcode;
+#endif
+
   _Jv_ushort       max_stack;
   _Jv_ushort       max_locals;
   int              code_length;
@@ -206,6 +214,10 @@ class _Jv_InterpMethod : public _Jv_MethodBase
   void get_line_table (jlong& start, jlong& end, jintArray& line_numbers,
 		       jlongArray& code_indices);
 
+  /* Installs a break instruction at the given code index. Returns
+     the pc_t of the breakpoint or NULL if index is invalid. */
+  pc_t install_break (jlong index);
+
   // Gets the instruction at the given index
   pc_t get_insn (jlong index);