openbsd.h: New file, originally from netbsd.

        * i386/openbsd.h: New file, originally from netbsd.
        * i386/xm-openbsd.h: New file.

From-SVN: r25280

1 files changed, 130 insertions, 0 deletions

diff --git a/gcc/config/i386/openbsd.h b/gcc/config/i386/openbsd.h
new file mode 100644
index 0000000..1b56262
--- /dev/null
+++ b/gcc/config/i386/openbsd.h
@@ -0,0 +1,130 @@
+/* Configuration for an OpenBSD i386 target.
+   
+   Copyright (C) 1999 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, 59 Temple Place - Suite 330,
+Boston, MA 02111-1307, USA.  */
+
+/* This is tested by i386gas.h.  */
+#define YES_UNDERSCORES
+
+#include <i386/gstabs.h>
+
+/* Get perform_* macros to build libgcc.a.  */
+#include <i386/perform.h>
+
+/* Get generic OpenBSD definitions.  */
+#define OBSD_OLD_GAS
+#include <openbsd.h>
+
+/* Run-time target specifications */
+#define CPP_PREDEFINES "-D__unix__ -D__i386__ -D__OpenBSD__ -Asystem(unix) -Asystem(OpenBSD) -Acpu(i386) -Amachine(i386)"
+
+/* Layout of source language data types.  */
+
+/* This must agree with <machine/ansi.h> */
+#undef SIZE_TYPE
+#define SIZE_TYPE "unsigned int"
+
+#undef PTRDIFF_TYPE
+#define PTRDIFF_TYPE "int"
+
+#undef WCHAR_TYPE
+#define WCHAR_TYPE "int"
+
+#undef WCHAR_TYPE_SIZE
+#define WCHAR_TYPE_SIZE 32
+
+/* Assembler format: overall framework.  */
+
+#undef ASM_APP_ON
+#define ASM_APP_ON "#APP\n"
+
+#undef ASM_APP_OFF
+#define ASM_APP_OFF "#NO_APP\n"
+
+/* The following macros were originally stolen from i386v4.h.
+   These have to be defined to get PIC code correct.  */
+
+/* Assembler format: dispatch tables.  */
+
+/* How to output an element of a case-vector that is relative.
+   This is only used for PIC code.  See comments by the `casesi' insn in
+   i386.md for an explanation of the expression this outputs.  */
+#undef ASM_OUTPUT_ADDR_DIFF_ELT
+#define ASM_OUTPUT_ADDR_DIFF_ELT(FILE, BODY, VALUE, REL) \
+  fprintf (FILE, "\t.long _GLOBAL_OFFSET_TABLE_+[.-%s%d]\n", LPREFIX, VALUE)
+
+/* Assembler format: sections.  */
+
+/* Indicate when jump tables go in the text section.  This is
+   necessary when compiling PIC code.  */
+#define JUMP_TABLES_IN_TEXT_SECTION  (flag_pic)
+
+/* Stack & calling: aggregate returns.  */
+
+/* Don't default to pcc-struct-return, because gcc is the only compiler, and
+   we want to retain compatibility with older gcc versions.  */
+#define DEFAULT_PCC_STRUCT_RETURN 0
+
+/* Assembler format: alignment output.  */
+
+/* Kludgy test: when gas is upgraded, it will have p2align, and no problems
+   with nops.  */
+#ifndef HAVE_GAS_MAX_SKIP_P2ALIGN
+/* i386 OpenBSD still uses an older gas that doesn't insert nops by default
+   when the .align directive demands to insert extra space in the text
+   segment.  */
+#undef ASM_OUTPUT_ALIGN
+#define ASM_OUTPUT_ALIGN(FILE,LOG) \
+  if ((LOG)!=0) fprintf ((FILE), "\t.align %d,0x90\n", (LOG))
+#endif
+
+/* Stack & calling: profiling.  */
+
+/* OpenBSD's profiler recovers all information from the stack pointer.
+   The icky part is not here, but in machine/profile.h.  */
+#undef FUNCTION_PROFILER
+#define FUNCTION_PROFILER(FILE, LABELNO)  \
+  fputs (flag_pic ? "\tcall mcount@PLT\n": "\tcall mcount\n", FILE);
+
+/* Assembler format: exception region output.  */
+
+/* All configurations that don't use elf must be explicit about not using
+   dwarf unwind information. egcs doesn't try too hard to check internal
+   configuration files...  */
+#define DWARF2_UNWIND_INFO 0
+
+/* Assembler format: alignment output.  */
+
+/* A C statement to output to the stdio stream FILE an assembler
+   command to advance the location counter to a multiple of 1<<LOG
+   bytes if it is within MAX_SKIP bytes.
+
+   This will be used to align code labels according to Intel 
+   recommendations, in prevision of binutils upgrade.  */
+#ifdef HAVE_GAS_MAX_SKIP_P2ALIGN
+#define ASM_OUTPUT_MAX_SKIP_ALIGN(FILE,LOG,MAX_SKIP)			\
+  do {									\
+    if ((LOG) != 0)							\
+      if ((MAX_SKIP) == 0) fprintf ((FILE), "\t.p2align %d\n", (LOG));	\
+      else fprintf ((FILE), "\t.p2align %d,,%d\n", (LOG), (MAX_SKIP));	\
+  } while (0)
+#endif
+
+/* Note that we pick up ASM_OUTPUT_MI_THUNK from unix.h.  */
+