From 55ae46b15fcf6a31291fd793f8819207a70e0bbb Mon Sep 17 00:00:00 2001
From: Ranjit Mathew <rmathew@hotmail.com>
Date: Wed, 12 Feb 2003 18:39:35 +0000
Subject: [PATCH] tm.texi (MODIFY_JNI_METHOD_CALL): Document.

2003-02-12  Ranjit Mathew  <rmathew@hotmail.com>

	* doc/tm.texi (MODIFY_JNI_METHOD_CALL): Document.
	* config/i386/cygwin.h (MODIFY_JNI_METHOD_CALL): New macro.

From-SVN: r62776
---
 gcc/ChangeLog            |  5 +++++
 gcc/config/i386/cygwin.h | 11 ++++++++++-
 gcc/doc/tm.texi          | 16 ++++++++++++++++
 3 files changed, 31 insertions(+), 1 deletion(-)

diff --git a/gcc/ChangeLog b/gcc/ChangeLog
index 5f1c638b3ca..67a1e0edcdd 100644
--- a/gcc/ChangeLog
+++ b/gcc/ChangeLog
@@ -1,3 +1,8 @@
+2003-02-12  Ranjit Mathew  <rmathew@hotmail.com>
+
+	* doc/tm.texi (MODIFY_JNI_METHOD_CALL): Document.
+	* config/i386/cygwin.h (MODIFY_JNI_METHOD_CALL): New macro.
+
 2003-02-12  Zack Weinberg  <zack@codesourcery.com>
 
 	* cpplib.c (do_include_common): Move warnings for
diff --git a/gcc/config/i386/cygwin.h b/gcc/config/i386/cygwin.h
index 085c3e78fe0..2419cf1cf1f 100644
--- a/gcc/config/i386/cygwin.h
+++ b/gcc/config/i386/cygwin.h
@@ -1,6 +1,6 @@
 /* Operating system specific defines to be used when targeting GCC for
    hosting on Windows32, using a Unix style C library and tools.
-   Copyright (C) 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002
+   Copyright (C) 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003
    Free Software Foundation, Inc.
 
 This file is part of GNU CC.
@@ -397,6 +397,15 @@ extern void i386_pe_unique_section PARAMS ((TREE, int));
 	const0_rtx));							\
     }
 
+/* Java Native Interface (JNI) methods on Win32 are invoked using the
+   stdcall calling convention.  */
+#undef MODIFY_JNI_METHOD_CALL
+#define MODIFY_JNI_METHOD_CALL(MDECL)					      \
+  build_type_attribute_variant ((MDECL),				      \
+			       build_tree_list (get_identifier ("stdcall"),   \
+						NULL))
+
+
 /* External function declarations.  */
 
 extern void i386_pe_record_external_function PARAMS ((const char *));
diff --git a/gcc/doc/tm.texi b/gcc/doc/tm.texi
index 0abf394f29c..9e8c4a26e6b 100644
--- a/gcc/doc/tm.texi
+++ b/gcc/doc/tm.texi
@@ -9246,6 +9246,22 @@ Define this macro for systems like AIX, where the linker discards
 object files that are not referenced from @code{main} and uses export
 lists.
 
+@findex MODIFY_JNI_METHOD_CALL
+@item MODIFY_JNI_METHOD_CALL (@var{mdecl})
+Define this macro to a C expression representing a variant of the
+method call @var{mdecl}, if Java Native Interface (JNI) methods
+must be invoked differently from other methods on your target.
+For example, on 32-bit Windows, JNI methods must be invoked using
+the @code{stdcall} calling convention and this macro is then
+defined as this expression:
+
+@smallexample
+build_type_attribute_variant (@var{mdecl},
+                              build_tree_list
+                              (get_identifier ("stdcall"),
+                               NULL))
+@end smallexample
+
 @end table
 
 @deftypefn {Target Hook} bool TARGET_CANNOT_MODIFY_JUMPS_P (void)