Initial revision

git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@3667 138bc75d-0d04-0410-961f-82ee72b054a4

1 files changed, 79 insertions, 0 deletions

diff --git a/gcc/config/i386/svr3gas.h b/gcc/config/i386/svr3gas.h
new file mode 100644
index 00000000000..18053ece835
--- /dev/null
+++ b/gcc/config/i386/svr3gas.h
@@ -0,0 +1,79 @@
+/* Definitions for Intel 386 running system V, using gas.
+   Copyright (C) 1992 Free Software Foundation, Inc.
+
+This file is part of GNU CC.
+
+GNU CC is free software; you can redistribute it and/or modify
+it under the terms of the GNU General Public License as published by
+the Free Software Foundation; either version 2, or (at your option)
+any later version.
+
+GNU CC is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+GNU General Public License for more details.
+
+You should have received a copy of the GNU General Public License
+along with GNU CC; see the file COPYING.  If not, write to
+the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA.  */
+
+#include "gas.h"
+
+/* Add stuff that normally comes from i386v.h */
+
+/* longjmp may fail to restore the registers if called from the same
+   function that called setjmp.  To compensate, the compiler avoids
+   putting variables in registers in functions that use both setjmp
+   and longjmp.  */
+
+#define NON_SAVING_SETJMP \
+  (current_function_calls_setjmp && current_function_calls_longjmp)
+
+/* longjmp may fail to restore the stack pointer if the saved frame
+   pointer is the same as the caller's frame pointer.  Requiring a frame
+   pointer in any function that calls setjmp or longjmp avoids this
+   problem, unless setjmp and longjmp are called from the same function.
+   Since a frame pointer will be required in such a function, it is OK
+   that the stack pointer is not restored.  */
+
+#undef FRAME_POINTER_REQUIRED
+#define FRAME_POINTER_REQUIRED \
+  (current_function_calls_setjmp || current_function_calls_longjmp)
+
+/* Modify ASM_OUTPUT_LOCAL slightly to test -msvr3-shlib, adapted to gas  */
+#undef ASM_OUTPUT_LOCAL
+#define ASM_OUTPUT_LOCAL(FILE, NAME, SIZE, ROUNDED)	\
+  do {							\
+    int align = exact_log2 (ROUNDED);			\
+    if (align > 2) align = 2;				\
+    if (TARGET_SVR3_SHLIB)				\
+      {							\
+	data_section ();				\
+	ASM_OUTPUT_ALIGN ((FILE), align == -1 ? 2 : align); \
+	ASM_OUTPUT_LABEL ((FILE), (NAME));		\
+	fprintf ((FILE), "\t.set .,.+%u\n", (ROUNDED));	\
+      }							\
+    else						\
+      {							\
+	fputs (".lcomm ", (FILE));			\
+	assemble_name ((FILE), (NAME));			\
+	fprintf ((FILE), ",%u\n", (ROUNDED));		\
+      }							\
+  } while (0)
+
+/* Add stuff that normally comes from i386v.h via svr3.h */
+
+/* Define the actual types of some ANSI-mandated types.  These
+   definitions should work for most SVR3 systems.  */
+
+#undef SIZE_TYPE
+#define SIZE_TYPE "unsigned int"
+
+#undef PTRDIFF_TYPE
+#define PTRDIFF_TYPE "int"
+
+#undef WCHAR_TYPE
+#define WCHAR_TYPE "long int"
+
+#undef WCHAR_TYPE_SIZE
+#define WCHAR_TYPE_SIZE BITS_PER_WORD