Initial revision

From-SVN: r292

gcc/config/i386/gas.h

@@ -0,0 +1,110 @@
+/* Definitions for Intel 386 running system V with gnu tools
+   Copyright (C) 1988 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 "i386.h"
+/* Use the bsd assembler syntax.  */
+/* we need to do this because gas is really a bsd style assembler,
+ * and so doesn't work well this these att-isms:
+ *
+ *  ASM_OUTPUT_SKIP is .set .,.+N, which isn't implemented in gas
+ *  ASM_OUTPUT_LOCAL is done with .set .,.+N, but that can't be
+ *   used to define bss static space
+ *
+ * Next is the question of whether to uses underscores.  RMS didn't
+ * like this idea at first, but since it is now obvious that we
+ * need this separate tm file for use with gas, at least to get
+ * dbx debugging info, I think we should also switch to underscores.
+ * We can keep i386v for real att style output, and the few
+ * people who want both form will have to compile twice.
+ */
+
+#include "bsd386.h"
+
+/* these come from bsd386.h, but are specific to sequent */
+#undef DBX_NO_XREFS
+#undef DBX_CONTIN_LENGTH
+
+/* By default, target has a 80387.  */
+
+#define TARGET_DEFAULT 1
+
+/* Specify predefined symbols in preprocessor.  */
+
+#define CPP_PREDEFINES "-Dunix -Di386"
+
+/* Allow #sccs in preprocessor.  */
+
+#define SCCS_DIRECTIVE
+
+/* Output #ident as a .ident.  */
+
+#define ASM_OUTPUT_IDENT(FILE, NAME) fprintf (FILE, "\t.ident \"%s\"\n", NAME);
+
+/* We do not want to output SDB debugging information.  */
+
+#undef SDB_DEBUGGING_INFO
+
+/* We want to output DBX debugging information.  */
+
+#define DBX_DEBUGGING_INFO
+
+/* Implicit library calls should use memcpy, not bcopy, etc.  */
+
+#define TARGET_MEM_FUNCTIONS
+
+#if 0  /* People say gas uses the log as the arg to .align.  */
+/* When using gas, .align N aligns to an N-byte boundary.  */
+
+#undef ASM_OUTPUT_ALIGN
+#define ASM_OUTPUT_ALIGN(FILE,LOG)	\
+     if ((LOG)!=0) fprintf ((FILE), "\t.align %d\n", 1<<(LOG))
+#endif
+
+/* Align labels, etc. at 4-byte boundaries.
+   For the 486, align to 16-byte boundary for sake of cache.  */
+
+#undef ASM_OUTPUT_ALIGN_CODE
+#define ASM_OUTPUT_ALIGN_CODE(FILE)			\
+     fprintf ((FILE), "\t.align %d,0x90\n",		\
+	      TARGET_486 ? 4 : 2);  /* Use log of 16 or log of 4 as arg.  */
+
+/* Align start of loop at 4-byte boundary.  */
+
+#undef ASM_OUTPUT_LOOP_ALIGN
+#define ASM_OUTPUT_LOOP_ALIGN(FILE) \
+     fprintf ((FILE), "\t.align 2,0x90\n");  /* Use log of 4 as arg.  */
+
+/* Machines that use the AT&T assembler syntax
+   also return floating point values in an FP register.  */
+/* Define how to find the value returned by a function.
+   VALTYPE is the data type of the value (as a tree).
+   If the precise function being called is known, FUNC is its FUNCTION_DECL;
+   otherwise, FUNC is 0.  */
+
+#define VALUE_REGNO(MODE) \
+  (((MODE)==SFmode || (MODE)==DFmode) ? FIRST_FLOAT_REG : 0)
+
+/* 1 if N is a possible register number for a function value. */
+
+#define FUNCTION_VALUE_REGNO_P(N) ((N) == 0 || (N)== FIRST_FLOAT_REG)
+
+#undef ASM_FILE_START
+#define ASM_FILE_START(FILE) \
+  fprintf (FILE, "\t.file\t\"%s\"\n", dump_base_name);