2008-03-26 H.J. Lu <hongjiu.lu@intel.com>

[pf3gnuchains/gcc-fork.git] / gcc / config / i386 / cygming.h

diff --git a/gcc/config/i386/cygming.h b/gcc/config/i386/cygming.h
index 6b1c136..da6f619 100644 (file)
--- a/gcc/config/i386/cygming.h
+++ b/gcc/config/i386/cygming.h
@@ -1,7 +1,7 @@
 /* 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, 2003,
-   2004, 2005, 2007
+   2004, 2005, 2007, 2008
    Free Software Foundation, Inc.
 
 This file is part of GCC.
@@ -197,6 +197,17 @@ do {                                                       \
   ASM_OUTPUT_LABEL ((STREAM), (NAME));                 \
 } while (0)
 
+/* Output a reference to a label. Fastcall function symbols
+   keep their '@' prefix, while other symbols are prefixed
+   with USER_LABEL_PREFIX.  */
+#undef ASM_OUTPUT_LABELREF
+#define  ASM_OUTPUT_LABELREF(STREAM, NAME)     \
+do {                                           \
+  if ((NAME)[0] != FASTCALL_PREFIX)            \
+    fputs (USER_LABEL_PREFIX, (STREAM));       \
+  fputs ((NAME), (STREAM));                    \
+} while (0)
+
 \f
 /* Emit code to check the stack when allocating more than 4000
    bytes in one go.  */
@@ -277,11 +288,9 @@ do {                                                       \
 #define ASM_COMMENT_START " #"
 
 #ifndef DWARF2_UNWIND_INFO
-/* 64-bit target uses DWARF2 unwind by default. If 32-bit target
-   configured with --disable-sjlj-exceptions, use DWARF2, else default
-   to SJLJ.  */
-#if TARGET_64BIT_DEFAULT \
-    || (defined (CONFIG_SJLJ_EXCEPTIONS) && !CONFIG_SJLJ_EXCEPTIONS)
+/* If configured with --disable-sjlj-exceptions, use DWARF2, else
+   default to SJLJ.  */
+#if  (defined (CONFIG_SJLJ_EXCEPTIONS) && !CONFIG_SJLJ_EXCEPTIONS)
 #define DWARF2_UNWIND_INFO 1
 #else
 #define DWARF2_UNWIND_INFO 0
@@ -318,10 +327,6 @@ do {                                                       \
 #undef MS_AGGREGATE_RETURN
 #define MS_AGGREGATE_RETURN 1
 
-/* No data type wants to be aligned rounder than this.  */
-#undef BIGGEST_ALIGNMENT
-#define BIGGEST_ALIGNMENT 128
-
 /* Biggest alignment supported by the object file format of this
    machine.  Use this macro to limit the alignment which can be
    specified using the `__attribute__ ((aligned (N)))' construct.  If
@@ -332,9 +337,13 @@ do {                                                       \
 #undef MAX_OFILE_ALIGNMENT
 #define MAX_OFILE_ALIGNMENT (8192 * 8)
 
-/* Native complier aligns internal doubles in structures on dword boundaries.  */
+/* BIGGEST_FIELD_ALIGNMENT macro is used directly by libobjc, There, we
+   align internal doubles in structures on dword boundaries. Otherwise,
+   support vector modes using ADJUST_FIELD_ALIGN, defined in i386.h.  */
+#ifdef IN_TARGET_LIBS
 #undef BIGGEST_FIELD_ALIGNMENT
 #define BIGGEST_FIELD_ALIGNMENT 64
+#endif
 
 /* A bit-field declared as `int' forces `int' alignment for the struct.  */
 #undef PCC_BITFIELD_TYPE_MATTERS