Initial revision

From-SVN: r114

gcc/config/i386/sequent.h

@@ -0,0 +1,92 @@
+/* Definitions for Sequent Intel 386.
+   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.  */
+
+#include "bsd386.h"
+
+/* By default, target has a 80387.  */
+
+#define TARGET_DEFAULT 1
+
+/* Specify predefined symbols in preprocessor.  */
+
+#define CPP_PREDEFINES "-Dunix -Di386 -Dsequent"
+
+/* Pass -Z and -ZO options to the linker.  */
+
+#define LINK_SPEC "%{Z*}"
+
+/* Link with libg.a when debugging, for dbx's sake.  */
+
+#define LIB_SPEC "%{g:-lg} %{!p:%{!pg:-lc}}%{p:-lc_p}%{pg:-lc_p} "
+
+/* We don't want to output SDB debugging information.  */
+
+#undef SDB_DEBUGGING_INFO
+
+/* We want to output DBX debugging information.  */
+
+#define DBX_DEBUGGING_INFO
+
+/* gcc order is ax, dx, cx, bx, si, di, bp, sp, st, st.
+ * dbx order is ax, dx, cx, st(0), st(1), bx, si, di, st(2), st(3),
+ * 		st(4), st(5), st(6), st(7), sp, bp  */
+
+/* ??? The right thing would be to change the ordering of the
+   registers to correspond to the conventions of this system,
+   and get rid of DBX_REGISTER_NUMBER.  */
+
+#undef DBX_REGISTER_NUMBER
+#define DBX_REGISTER_NUMBER(n)		\
+((n) < 3 ? (n) : (n) < 6 ? (n) + 2	\
+ : (n) == 6 ? 15 : (n) == 7 ? 14 : 3)
+
+/* Prevent anything from being allocated in the register pair cx/bx,
+   since that would confuse GDB.  */
+
+#undef HARD_REGNO_MODE_OK
+#define HARD_REGNO_MODE_OK(REGNO, MODE) \
+  (((REGNO) < 2 ? 1							\
+    : (REGNO) < 4 ? 1							\
+    : (REGNO) >= 8 ? (GET_MODE_CLASS (MODE) == MODE_FLOAT		\
+		    || GET_MODE_CLASS (MODE) == MODE_COMPLEX_FLOAT)	\
+    : (MODE) != QImode)							\
+   && ! (REGNO == 2 && GET_MODE_UNIT_SIZE (MODE) > 4))
+
+/* Floating-point return values come in the FP register.  */
+
+#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)
+
+/* Output assembler code to FILE to increment profiler label # LABELNO
+   for profiling a function entry. */
+
+#undef FUNCTION_PROFILER
+#define FUNCTION_PROFILER(FILE, LABELNO)  \
+   fprintf (FILE, "\tmovl $LP%d,%%eax\n\tcall mcount\n", (LABELNO));
+
+/* Assember pseudo-op for shared data segment. */
+#define SHARED_SECTION_ASM_OP ".shdata"