[multiple changes]

2007-07-13  Andrew Haley  <aph@redhat.com>

	* libgcj.ver: Add __gcj_personality_sj0.

	* testsuite/libjava.jvmti/jvmti-interp.exp: Likewise.
	* testsuite/libjava.jni/jni.exp: Use -fdollars-in-identifiers.
	* testsuite/libjava.jni/cni.exp: Use -fdollars-in-identifiers.
	* testsuite/libjava.jvmti/jvmti.exp (gcj_jvmti_compile_cxx_to_o): Likewise.

	* gnu/classpath/natVMStackWalker.cc (getCallingClassLoader): Check
	klass is non-null.
	* java/lang/reflect/natField.cc (getAddr): Call
	_Jv_StackTrace::GetCallingClass only if CALLER is non-null.
	* java/lang/reflect/natVMProxy.cc (run_proxy): Use
	_Jv_getFieldInternal to get field proxyClass.m.
	(_Jv_getFieldInternal): New function.

2007-07-11  Andrew Haley  <aph@redhat.com>

	* configure.host (arm*-linux-gnu): New.
	* sysdep/arm/locks.h: New.

From-SVN: r126622

libjava/ChangeLog

@@ -1,3 +1,25 @@
+2007-07-13  Andrew Haley  <aph@redhat.com>
+
+	* libgcj.ver: Add __gcj_personality_sj0.
+
+	* testsuite/libjava.jvmti/jvmti-interp.exp: Likewise.
+	* testsuite/libjava.jni/jni.exp: Use -fdollars-in-identifiers.
+	* testsuite/libjava.jni/cni.exp: Use -fdollars-in-identifiers.
+	* testsuite/libjava.jvmti/jvmti.exp (gcj_jvmti_compile_cxx_to_o): Likewise.
+
+	* gnu/classpath/natVMStackWalker.cc (getCallingClassLoader): Check
+	klass is non-null.
+	* java/lang/reflect/natField.cc (getAddr): Call
+	_Jv_StackTrace::GetCallingClass only if CALLER is non-null.
+	* java/lang/reflect/natVMProxy.cc (run_proxy): Use
+	_Jv_getFieldInternal to get field proxyClass.m.
+	(_Jv_getFieldInternal): New function.
+
+2007-07-11  Andrew Haley  <aph@redhat.com>
+
+	* configure.host (arm*-linux-gnu): New.
+	* sysdep/arm/locks.h: New.
+
 2007-07-13  Roger Sayle  <roger@eyesopen.com>
 
 	* java/lang/natPosixProcess.cc: Include <sys/time.h> before

libjava/configure.host

@@ -82,6 +82,10 @@ case "${host}" in
 	enable_getenv_properties_default=no
 	enable_main_args_default=no
 	;;
+  arm*-linux-gnu)
+	libgcj_interpreter=yes
+	sysdeps_dir=arm
+	;;
   mips-tx39-*|mipstx39-unknown-*)
 	libgcj_flags="${libgcj_flags} -G 0"
 	LDFLAGS="$LDFLAGS -Tjmr3904dram.ld"

libjava/gnu/classpath/natVMStackWalker.cc

@@ -80,15 +80,22 @@ gnu::classpath::VMStackWalker::getClassLoader(::java::lang::Class *c)
 gnu::classpath::VMStackWalker::getCallingClassLoader(void)
 {
   _Jv_InitClass (&::gnu::classpath::VMStackWalker::class$);
-  return
-    _Jv_StackTrace::GetStackWalkerCallingClass ()->getClassLoaderInternal ();
+  jclass klass = _Jv_StackTrace::GetStackWalkerCallingClass ();
+  if (klass)
+    return klass->getClassLoaderInternal ();
+  else
+    return NULL;
 }
 
 ::java::lang::ClassLoader *
 gnu::classpath::VMStackWalker::getCallingClassLoader(::gnu::gcj::RawData *pc)
 {
   _Jv_InitClass (&::gnu::classpath::VMStackWalker::class$);
-  return GET_CALLING_CLASS(pc)->getClassLoaderInternal ();
+  jclass klass = GET_CALLING_CLASS(pc);
+  if (klass)
+    return klass->getClassLoaderInternal ();
+  else
+    return NULL;
 }
 
 ::java::lang::ClassLoader *

libjava/headers.txt

@@ -49,9 +49,11 @@ friend class java::lang::Class;
 class java/lang/reflect/Field
 prepend jfieldID _Jv_FromReflectedField (java::lang::reflect::Field *);
 prepend jobject _Jv_JNI_ToReflectedField (_Jv_JNIEnv*, jclass, jfieldID, jboolean);
+prepend jobject _Jv_getFieldInternal (java::lang::reflect::Field f, jclass c, jobject o);
 friend jfieldID (::_Jv_FromReflectedField) (java::lang::reflect::Field *);
 friend jobject (::_Jv_JNI_ToReflectedField) (_Jv_JNIEnv*, jclass, jfieldID, jboolean);
 friend class java::lang::Class;
+friend jobject (::_Jv_getFieldInternal) (java::lang::reflect::Field f, jclass c, jobject o);
 
 class java/lang/reflect/Method
 prepend jmethodID _Jv_FromReflectedMethod (java::lang::reflect::Method *);

libjava/java/lang/reflect/Field.h

@@ -12,6 +12,7 @@
 
 jfieldID _Jv_FromReflectedField (java::lang::reflect::Field *);
 jobject _Jv_JNI_ToReflectedField (_Jv_JNIEnv*, jclass, jfieldID, jboolean);
+jobject _Jv_getFieldInternal (java::lang::reflect::Field *f, jclass c, jobject o);
 
 class java::lang::reflect::Field : public ::java::lang::reflect::AccessibleObject
 {
@@ -91,6 +92,7 @@ public:
   friend jfieldID (::_Jv_FromReflectedField) (java::lang::reflect::Field *);
   friend jobject (::_Jv_JNI_ToReflectedField) (_Jv_JNIEnv*, jclass, jfieldID, jboolean);
   friend class java::lang::Class;
+  friend jobject (::_Jv_getFieldInternal) (java::lang::reflect::Field *f, jclass c, jobject o);
 };
 
 #endif // __java_lang_reflect_Field__

libjava/java/lang/reflect/natField.cc

@@ -74,11 +74,6 @@ static void*
 getAddr (java::lang::reflect::Field* field, jclass caller, jobject obj,
          jboolean checkFinal)
 {
-  // FIXME: we know CALLER is NULL here.  At one point we planned to
-  // have the compiler insert the caller as a hidden argument in some
-  // calls.  However, we never implemented that, so we have to find
-  // the caller by hand instead.
-  
   using namespace java::lang::reflect;
   
   jfieldID fld = _Jv_FromReflectedField (field);
@@ -97,7 +92,8 @@ getAddr (java::lang::reflect::Field* field, jclass caller, jobject obj,
   // Check accessibility, if required.
   if (! (Modifier::isPublic (flags) || field->isAccessible()))
     {
-      caller = _Jv_StackTrace::GetCallingClass (&Field::class$);
+      if (! caller)
+	caller = _Jv_StackTrace::GetCallingClass (&Field::class$);
       if (! _Jv_CheckAccess (caller, field->getDeclaringClass(), flags))
 	throw new java::lang::IllegalAccessException;
     }

libjava/java/lang/reflect/natVMProxy.cc

@@ -299,6 +299,15 @@ unbox (jobject o, jclass klass, void *rvalue, FFI_TYPE type)
     JvFail ("Bad ffi type in proxy");
 }
 
+// _Jv_getFieldInternal is declared as a friend of reflect.Field in
+// libjava/headers.txt.  This gives us a way to call the private
+// method Field.get (Class caller, Object obj).
+extern inline jobject
+_Jv_getFieldInternal (java::lang::reflect::Field *f, jclass c, jobject o)
+{
+  return f->get(c, o);
+}
+
 // run_proxy is the entry point for all proxy methods.  It boxes up
 // all the arguments and then invokes the invocation handler's invoke()
 // method.  Exceptions are caught and propagated.
@@ -340,7 +349,8 @@ run_proxy (ffi_cif *cif,
   // difference.  We'd still have to save the method array because
   // ncode structs are not scanned by the gc.
   Field *f = proxyClass->getDeclaredField (JvNewStringLatin1 ("m"));
-  JArray<Method*> *methods = (JArray<Method*>*)f->get (NULL);
+  JArray<Method*> *methods 
+    = (JArray<Method*>*)_Jv_getFieldInternal (f, proxyClass, NULL);
   Method *meth = elements(methods)[self->method_index];
 
   JArray<jclass> *parameter_types = meth->internalGetParameterTypes ();

libjava/libgcj.ver

@@ -2,6 +2,6 @@
 # symbols in libgcj.so.
 
 {
-  global: Jv*; _Jv_*; __gcj_personality_v0; _Z*;
+  global: Jv*; _Jv_*; __gcj_personality_v0; __gcj_personality_sj0; _Z*;
   local: *;
 };

libjava/sysdep/arm/locks.h

@@ -0,0 +1,79 @@
+// locks.h - Thread synchronization primitives. ARM implementation.
+
+/* Copyright (C) 2007  Free Software Foundation
+
+   This file is part of libgcj.
+
+This software is copyrighted work licensed under the terms of the
+Libgcj License.  Please consult the file "LIBGCJ_LICENSE" for
+details.  */
+
+#ifndef __SYSDEP_LOCKS_H__
+#define __SYSDEP_LOCKS_H__
+
+typedef size_t obj_addr_t;	/* Integer type big enough for object	*/
+				/* address.				*/
+
+/* Atomic compare and exchange.  These sequences are not actually
+   atomic; there is a race if *ADDR != OLD_VAL and we are preempted
+   between the two swaps.  However, they are very close to atomic, and
+   are the best that a pre-ARMv6 implementation can do without
+   operating system support.  LinuxThreads has been using these
+   sequences for many years.  */
+
+inline static bool
+compare_and_swap(volatile obj_addr_t *addr,
+		 obj_addr_t old_val,
+		 obj_addr_t new_val)
+{
+  volatile obj_addr_t result, tmp;
+  __asm__ ("\n"
+	   "0:	ldr	%[tmp],[%[addr]]\n"
+	   "	cmp	%[tmp],%[old_val]\n"
+	   "	movne	%[result],#0\n"
+	   "	bne	1f\n"
+	   "	swp	%[result],%[new_val],[%[addr]]\n"
+	   "	cmp	%[tmp],%[result]\n"
+	   "	swpne	%[tmp],%[result],[%[addr]]\n"
+	   "	bne	0b\n"
+	   "	mov	%[result],#1\n"
+	   "1:"
+	   : [result] "=&r" (result), [tmp] "=&r" (tmp)
+	   : [addr] "r" (addr), [new_val] "r" (new_val), [old_val] "r" (old_val)
+	   : "cc", "memory");
+
+  return result;
+}
+
+inline static void
+release_set(volatile obj_addr_t *addr, obj_addr_t new_val)
+{
+  __asm__ __volatile__("" : : : "memory");
+  *(addr) = new_val;
+}
+
+inline static bool
+compare_and_swap_release(volatile obj_addr_t *addr,
+		  				     obj_addr_t old,
+						     obj_addr_t new_val)
+{
+  return compare_and_swap(addr, old, new_val);
+}
+
+// Ensure that subsequent instructions do not execute on stale
+// data that was loaded from memory before the barrier.
+inline static void
+read_barrier()
+{
+  __asm__ __volatile__("" : : : "memory");
+}
+
+// Ensure that prior stores to memory are completed with respect to other
+// processors.
+inline static void
+write_barrier()
+{
+  __asm__ __volatile__("" : : : "memory");
+}
+
+#endif

libjava/testsuite/libjava.cni/cni.exp

@@ -10,7 +10,7 @@ proc gcj_cni_compile_cxx_to_o {file {options {}}} {
   set oname ${name}.o
 
   # Find the generated header.
-  lappend options "additional_flags=-I. -I.. -I$srcdir/$subdir"
+  lappend options "additional_flags=-I. -I.. -I$srcdir/$subdir -fdollars-in-identifiers"
   # Find libgcj headers.
   lappend options "additional_flags=-I$srcdir/.."
 

libjava/testsuite/libjava.jni/jni.exp

@@ -31,7 +31,7 @@ proc gcj_jni_compile_c_to_so {file {options {}}} {
 
   lappend options "additional_flags=${so_flag} -fPIC"
   # Find the generated header.
-  lappend options "additional_flags=-I. -I.. -I$srcdir/$subdir"
+  lappend options "additional_flags=-I. -I.. -I$srcdir/$subdir -fdollars-in-identifiers"
 
   # Ensure that the generated header has correct prototypes.
   set cfile [file rootname $file].c
@@ -219,7 +219,7 @@ proc gcj_jni_invocation_compile_c_to_binary {file {options {}}} {
   lappend options "additional_flags=-I. -I.. -I$srcdir/$subdir"
 
   # Find jni.h and jni_md.h.
-  lappend options "additional_flags=-I$srcdir/../include -I$srcdir/../classpath/include"
+  lappend options "additional_flags=-I$srcdir/../include -I$srcdir/../classpath/include -fdollars-in-identifiers"
 
   # Append C++ options
   lappend options "additional_flags=$options_cxx"

libjava/testsuite/libjava.jvmti/jvmti-interp.exp

@@ -47,7 +47,7 @@ proc gcj_jni_compile_c_to_so {file {options {}}} {
 
   # Find jni.h and jni_md.h.
   lappend options "additional_flags=-I$srcdir/../include  \
-                   -I$srcdir/../classpath/include"
+                   -I$srcdir/../classpath/include -fdollars-in-identifiers"
 
   # Append C++ options
   lappend options "additional_flags=$options_cxx"

libjava/testsuite/libjava.jvmti/jvmti.exp

@@ -11,11 +11,11 @@ proc gcj_jvmti_compile_cxx_to_o {file {options {}}} {
   set oname ${name}.o
 
   # Find the generated header.
-  lappend options "additional_flags=-g -I. -I.."
+  lappend options "additional_flags=-g -I. -I.. -fdollars-in-identifiers"
   # Find libgcj headers.
   lappend options "additional_flags=-I$srcdir/.."
   # Find jvmti.h, jvmti_md.h, jvmti-int.h, jvm.h requirements
-  lappend options "additional_flags=-I$srcdir/../include -I$srcdir/../classpath/include -I$objdir/../include -I$objdir/../../boehm-gc/include"
+  lappend options "additional_flags=-I$srcdir/../include -I$srcdir/../classpath/include -I$objdir/../include -I$objdir/../../boehm-gc/include "
 
   set x [libjava_prune_warnings \
 	   [target_compile $file $oname object $options]]