1 files changed, 55 insertions, 0 deletions
diff --git a/src/ssx/ppc405/ppc405_dcr.h b/src/ssx/ppc405/ppc405_dcr.h
new file mode 100755
index 0000000..1f389bf
--- /dev/null
+++ b/src/ssx/ppc405/ppc405_dcr.h
@@ -0,0 +1,55 @@
+#ifndef __PPC405_DCR_H__
+#define __PPC405_DCR_H__
+
+// $Id: ppc405_dcr.h,v 1.1.1.1 2013/12/11 21:03:27 bcbrock Exp $
+// $Source: /afs/awd/projects/eclipz/KnowledgeBase/.cvsroot/eclipz/chips/p8/working/procedures/ssx/ppc405/ppc405_dcr.h,v $
+//-----------------------------------------------------------------------------
+// *! (C) Copyright International Business Machines Corp. 2013
+// *! All Rights Reserved -- Property of IBM
+// *! *** IBM Confidential ***
+//-----------------------------------------------------------------------------
+
+/// \file ppc405_dcr.h
+/// \brief Everything related to PPC405-specific DCRs
+///
+/// DCRs are chip-specific.  This file only defines DCR access methods; DCR
+/// numbers will be defined by chip-specific headers.
+
+/// Move From DCR
+///
+///  Note that \a dcrn must be a compile-time constant.
+
+#define mfdcr(dcrn)                                             \
+   ({uint32_t __value;                                          \
+   asm volatile ("mfdcr %0, %1" : "=r" (__value) : "i" (dcrn)); \
+   __value;})    
+
+
+/// Move to DCR
+///
+///  Note that \a dcrn must be a compile-time constant.
+
+#define mtdcr(dcrn, value)                                        \
+   ({uint32_t __value = (value);                                  \
+     asm volatile ("mtdcr %0, %1" : : "i" (dcrn), "r" (__value)); \
+   })
+    
+
+/// Read-Modify-Write a DCR with OR (Set DCR bits)
+///
+///  Note that \a dcrn must be a compile-time constant. This operation is only
+///  guaranteed atomic in a critical section.
+
+#define or_dcr(dcrn, x) \
+    mtdcr(dcrn, mfdcr(dcrn) | (x))
+
+
+/// Read-Modify-Write a DCR with AND complement (Clear DCR bits)
+///
+///  Note that \a dcrn must be a compile-time constant.  This operation is only
+///  guaranteed atomic in a critical section.
+
+#define andc_dcr(dcrn, x) \
+    mtdcr(dcrn, mfdcr(dcrn) & ~(x))
+
+#endif /* __PPC405_DCR_H__ */