From 61ba976360804d85f9203821518bb4b132852188 Mon Sep 17 00:00:00 2001
From: Joel Sherrill <joel.sherrill@OARcorp.com>
Date: Tue, 22 Feb 2000 18:39:52 +0000
Subject: New port of RTEMS to TI C3x and C4x.

---
 cpukit/score/cpu/c4x/rtems/asm.h | 101 +++++++++++++++++++++++++++++++++++++++
 1 file changed, 101 insertions(+)
 create mode 100644 cpukit/score/cpu/c4x/rtems/asm.h

(limited to 'cpukit/score/cpu/c4x/rtems/asm.h')

diff --git a/cpukit/score/cpu/c4x/rtems/asm.h b/cpukit/score/cpu/c4x/rtems/asm.h
new file mode 100644
index 0000000000..c6e75ee9e8
--- /dev/null
+++ b/cpukit/score/cpu/c4x/rtems/asm.h
@@ -0,0 +1,101 @@
+/*  asm.h
+ *
+ *  This include file attempts to address the problems
+ *  caused by incompatible flavors of assemblers and
+ *  toolsets.  It primarily addresses variations in the
+ *  use of leading underscores on symbols and the requirement
+ *  that register names be preceded by a %.
+ *
+ *
+ *  NOTE: The spacing in the use of these macros
+ *        is critical to them working as advertised.
+ *
+ *  COPYRIGHT:
+ *
+ *  This file is based on similar code found in newlib available
+ *  from ftp.cygnus.com.  The file which was used had no copyright
+ *  notice.  This file is freely distributable as long as the source
+ *  of the file is noted.  This file is:
+ *
+ *  COPYRIGHT (c) 1994-1997.
+ *  On-Line Applications Research Corporation (OAR).
+ *
+ *  $Id$
+ */
+
+#ifndef __C4X_ASM_h
+#define __C4X_ASM_h
+
+/*
+ *  Indicate we are in an assembly file and get the basic CPU definitions.
+ */
+
+#ifndef ASM
+#define ASM
+#endif
+#include <rtems/score/targopts.h>
+#include <rtems/score/c4x.h>
+
+/*
+ *  Recent versions of GNU cpp define variables which indicate the
+ *  need for underscores and percents.  If not using GNU cpp or
+ *  the version does not support this, then you will obviously
+ *  have to define these as appropriate.
+ */
+
+#ifndef __USER_LABEL_PREFIX__
+#define __USER_LABEL_PREFIX__ _
+#endif
+
+#ifndef __REGISTER_PREFIX__
+#define __REGISTER_PREFIX__
+#endif
+
+/* ANSI concatenation macros.  */
+
+#define CONCAT1(a, b) CONCAT2(a, b)
+#define CONCAT2(a, b) a ## b
+
+/* Use the right prefix for global labels.  */
+
+#define SYM(x) CONCAT1 (__USER_LABEL_PREFIX__, x)
+
+/* Use the right prefix for registers.  */
+
+#define REG(x) CONCAT1 (__REGISTER_PREFIX__, x)
+
+/*
+ *  define macros for all of the registers on this CPU
+ *
+ *  EXAMPLE:     #define d0 REG (d0)
+ */
+
+/*
+ *  Define macros to handle section beginning and ends.
+ */
+
+
+#define BEGIN_CODE_DCL .text
+#define END_CODE_DCL
+#define BEGIN_DATA_DCL .data
+#define END_DATA_DCL
+#define BEGIN_CODE .text
+#define END_CODE
+#define BEGIN_DATA
+#define END_DATA
+#define BEGIN_BSS
+#define END_BSS
+#define END
+
+/*
+ *  Following must be tailor for a particular flavor of the C compiler.
+ *  They may need to put underscores in front of the symbols.
+ */
+
+#define PUBLIC(sym) .globl SYM (sym)
+#define EXTERN(sym) .globl SYM (sym)
+
+#endif
+/* end of include file */
+
+
-- 
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