New Stack Trace infrastructure.

2005-03-10  Bryce McKinlay  <mckinlay@redhat.com>

	New Stack Trace infrastructure.
	* Makefile.am (libgcj0_convenience_la_SOURCES): Add stacktrace.cc.
	(gnu/gcj/runtime/StackTrace.lo): Removed.
	(ordinary_java_source_files): Remove obsolete files.
	(nat_source_files): Remove obsolete files. Add natVMThrowable.cc.
	* configure.host (fallback_backtrace_h): Set backtrace header
	for mingw and cygwin targets.
	* configure.ac: Make symlink for fallback backtrace headers.
	* Makefile.in, configure: Rebuilt.
	* defineclass.cc (_Jv_ClassReader::read_one_code_attribute):
	Read 'LineNumberTable' attribute.
	(_Jv_ClassReader::read_one_class_attribute): Read 'SourceFile'
	attribute.
	(_Jv_ClassReader::handleCodeAttribute): Initialize method line
	table fields.
	* exception.cc: Remove unused include.
	* interpret.cc (DIRECT_THREADED, insn_slot): Moved to java-interp.h.
	(SAVE_PC): New macro. Save current PC in the interpreter frame.
	(NULLCHECK, NULLARRAYCHECK): Use SAVE_PC.
	(_Jv_InterpMethod::compile): Translate bytecode PC values in the line
	table to direct threaded instruction values.
	(_Jv_StartOfInterpreter, _Jv_EndOfInterpreter): Removed.
	(_Jv_InterpMethod::run): No longer member function. All
	callers updated. Remove _Unwind calls. Call SAVE_PC whenever a call
	is made or where an instruction could throw.
	(_Jv_InterpMethod::get_source_line): New. Look up source line numbers
	in line_table.
	* prims.cc (catch_segv): Construct exception after MAKE_THROW_FRAME.
	(catch_fpe): Likewise.
	* stacktrace.cc: New file. Stack trace code now here.
	* gnu/gcj/runtime/MethodRef.java:
	* gnu/gcj/runtime/NameFinder.java: Mostly reimplemented. Now simply
	calls addr2line to look up PC addresses in a given binary or shared
	library.
	* gnu/gcj/runtime/StackTrace.java, gnu/gcj/runtime/natNameFinder.cc,
	gnu/gcj/runtime/natStackTrace.cc: Removed.
	* gnu/java/lang/MainThread.java (call_main): Add comment warning that
	this function name is specially recognised by the stack trace code
	and shouldn't be changed.
	* include/java-interp.h (DIRECT_THREADED, insn_slot): Moved here.
	(struct  _Jv_LineTableEntry, line_table, line_table_len): New.
	(_Jv_InterpMethod::run): Update declaration.
	(_Jv_StackTrace_): New friend. NameFinder and StackTrace no longer
	friends.
	(_Jv_InterpFrame): Renamed from _Jv_MethodChain. Add PC field.
	* include/java-stack.h: New file. Declarations for stack tracing.
	* include/jvm.h (_Jv_Frame_info): Removed.
	* java/lang/Class.h: Update friend declarations.
	* java/lang/VMClassLoader.java (getSystemClassLoader): Simplify
	exception message.
	* java/lang/VMThrowable.java (fillInStackTrace): Now native.
	(getStackTrace): Now native.
	(data): New RawDataManaged field.
	* java/lang/natClass.cc: Update includes.
	(forName): Use _Jv_StackTrace::GetCallingClass for
	calling-classloader check.
	(getClassLoader): Likewise.
	* java/lang/natRuntime.cc: Update includes.
	(_load): Use _Jv_StackTrace::GetFirstNonSystemClassLoader.
	* java/lang/natVMSecurityManager.cc: Update includes.
	(getClassContext): Use _Jv_StackTrace::GetClassContext.
	* java/lang/natVMThrowable.cc: New file. Native methods for
	VMThrowable.
	* java/lang/reflect/natArray.cc: Update includes.
	(newInstance): Use _Jv_StackTrace::GetCallingClass to implement
	accessibility check.
	* java/lang/reflect/natConstructor.cc: Update includes.
	(newInstance): Use _Jv_StackTrace::GetCallingClass to implement
	accessibility check.
	* java/lang/reflect/natField.cc: Update includes.
	(getAddr): Use _Jv_StackTrace::GetCallingClass to implement
	accessibility check.
	* java/lang/reflect/natMethod.cc: Update includes.
	(invoke): Use _Jv_StackTrace::GetCallingClass to implement
	accessibility check.
	* java/util/natResourceBundle.cc: Update includes.
	(getCallingClassLoader): Use _Jv_StackTrace::GetCallingClass.
	* java/util/logging/natLogger.cc: Update includes. Use
	_Jv_StackTrace::GetCallerInfo to get call-site info.
	* sysdep/generic/backtrace.h: Fallback backtrace code. Stub
	implementation.
	* sysdep/i386/backtrace.h: New. Fallback backtrace code. i386
	implementation.

From-SVN: r96253

1 files changed, 45 insertions, 13 deletions

diff --git a/libjava/defineclass.cc b/libjava/defineclass.cc
index 382b321f591..111b1fb2ca2 100644
--- a/libjava/defineclass.cc
+++ b/libjava/defineclass.cc
@@ -229,6 +229,7 @@ struct _Jv_ClassReader {
     len    = length;
     pos    = 0;
     def    = klass;
+
     def->size_in_bytes = -1;
     def->vtable_method_count = -1;
     def->engine = &_Jv_soleInterpreterEngine;
@@ -613,26 +614,54 @@ void _Jv_ClassReader::read_one_method_attribute (int method_index)
     }
 }
 
-void _Jv_ClassReader::read_one_code_attribute (int /*method*/) 
+void _Jv_ClassReader::read_one_code_attribute (int method_index) 
 {
-  /* ignore for now, ... later we may want to pick up
-     line number information, for debugging purposes;
-     in fact, the whole debugger issue is open!  */
-
-  /* int name = */ read2u ();
+  int name = read2u ();
   int length = read4 ();
-  skip (length);
-
+  if (is_attribute_name (name, "LineNumberTable"))
+    {
+      _Jv_InterpMethod *method = reinterpret_cast<_Jv_InterpMethod *>
+	(def_interp->interpreted_methods[method_index]);
+      if (method->line_table != NULL)
+	throw_class_format_error ("Method already has LineNumberTable");
+
+      int table_len = read2u ();
+      _Jv_LineTableEntry* table
+	= (_Jv_LineTableEntry *) JvAllocBytes (table_len
+					    * sizeof (_Jv_LineTableEntry));
+      for (int i = 0; i < table_len; i++)
+       {
+	 table[i].bytecode_pc = read2u ();
+	 table[i].line = read2u ();
+       }
+      method->line_table_len = table_len;
+      method->line_table = table;
+    }
+  else
+    {
+      /* ignore unknown code attributes */
+      skip (length);
+    }
 }
 
 void _Jv_ClassReader::read_one_class_attribute () 
 {
-  /* we also ignore the class attributes, ...
-     some day we'll add inner-classes support. */
-
-  /* int name = */ read2u ();
+  int name = read2u ();
   int length = read4 ();
-  skip (length);
+  if (is_attribute_name (name, "SourceFile"))
+    {
+      int source_index = read2u ();
+      check_tag (source_index, JV_CONSTANT_Utf8);
+      prepare_pool_entry (source_index, JV_CONSTANT_Utf8);
+      def_interp->source_file_name = _Jv_NewStringUtf8Const
+	(def->constants.data[source_index].utf8);
+    }
+  else
+    {
+      /* Currently, we ignore most class attributes.
+         FIXME: Add inner-classes attributes support. */
+     skip (length);
+    }
 }
 
 
@@ -1279,6 +1308,9 @@ void _Jv_ClassReader::handleCodeAttribute
   method->defining_class = def;
   method->self           = &def->methods[method_index];
   method->prepared       = NULL;
+  method->line_table_len = 0;
+  method->line_table     = NULL;
+
 
   // grab the byte code!
   memcpy ((void*) method->bytecode (),