Moved asm.h back up in tree.

1 files changed, 144 insertions, 0 deletions

diff --git a/cpukit/score/cpu/m68k/rtems/asm.h b/cpukit/score/cpu/m68k/rtems/asm.h
new file mode 100644
index 0000000000..456b213cb2
--- /dev/null
+++ b/cpukit/score/cpu/m68k/rtems/asm.h
@@ -0,0 +1,144 @@
+/*  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 __M68k_ASM_h
+#define __M68k_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/cpu.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 d0 REG (d0)
+#define d1 REG (d1)
+#define d2 REG (d2)
+#define d3 REG (d3)
+#define d4 REG (d4)
+#define d5 REG (d5)
+#define d6 REG (d6)
+#define d7 REG (d7)
+#define a0 REG (a0)
+#define a1 REG (a1)
+#define a2 REG (a2)
+#define a3 REG (a3)
+#define a4 REG (a4)
+#define a5 REG (a5)
+#define a6 REG (a6)
+#define a7 REG (a7)
+#define sp REG (sp)
+
+#define msp REG (msp)
+#define usp REG (usp)
+#define isp REG (isp)
+#define sr  REG (sr)
+#define vbr REG (vbr)
+#define dfc REG (dfc)
+#define sfc REG (sfc)
+
+/* mcf52xx special regs */
+#define cacr    REG (cacr)
+#define acr0    REG (acr0)
+#define acr1    REG (acr1)
+#define rambar0 REG (rambar0)
+#define mbar    REG (mbar)
+
+
+#define fp0 REG (fp0)
+#define fp1 REG (fp1)
+#define fp2 REG (fp2)
+#define fp3 REG (fp3)
+#define fp4 REG (fp4)
+#define fp5 REG (fp5)
+#define fp6 REG (fp6)
+#define fp7 REG (fp7)
+
+#define fpc REG (fpc)
+#define fpi REG (fpi)
+#define fps REG (fps)
+#define fpsr REG (fpsr)
+
+
+/*
+ *  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 .data
+#define END_DATA
+#define BEGIN_BSS .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 */
+
+