From 17508d02bba1d47f4cf884b190566e72f69adb4e Mon Sep 17 00:00:00 2001
From: Joel Sherrill <joel.sherrill@OARcorp.com>
Date: Wed, 26 Jul 2000 19:26:28 +0000
Subject: Port of RTEMS to the Texas Instruments C3x/C4x DSP families including
 a BSP (c4xsim) supporting the simulator included with gdb.  This port was
 done by Joel Sherrill and Jennifer Averett of OAR Corporation. Also included
 with this port is a space/time optimization to eliminate FP context switch
 management on CPUs without hardware or software FP.

An issue with this port was that sizeof(unsigned32) = sizeof(unsigned8)
on this CPU.  This required addressing alignment checks and assumptions
as well as fixing code that assumed sizeof(unsigned32) == 4.
---
 cpukit/score/macros/rtems/score/address.inl |  6 ++++++
 cpukit/score/macros/rtems/score/thread.inl  | 11 +++++++++++
 2 files changed, 17 insertions(+)

(limited to 'cpukit/score/macros/rtems/score')

diff --git a/cpukit/score/macros/rtems/score/address.inl b/cpukit/score/macros/rtems/score/address.inl
index 2f14aa633a..10623b1f76 100644
--- a/cpukit/score/macros/rtems/score/address.inl
+++ b/cpukit/score/macros/rtems/score/address.inl
@@ -51,8 +51,14 @@
  *
  */
 
+#if (CPU_ALIGNMENT == 0)
+    (TRUE)
+#elif defined(RTEMS_CPU_HAS_16_BIT_ADDRESSES)
+    ( ( (unsigned short)(_address) % CPU_ALIGNMENT ) == 0 )
 #define _Addresses_Is_aligned( _address ) \
     ( ( (unsigned32)(_address) % CPU_ALIGNMENT ) == 0 )
+#else
+#endif
 
 /*PAGE
  *
diff --git a/cpukit/score/macros/rtems/score/thread.inl b/cpukit/score/macros/rtems/score/thread.inl
index 26671093b6..749b1c5205 100644
--- a/cpukit/score/macros/rtems/score/thread.inl
+++ b/cpukit/score/macros/rtems/score/thread.inl
@@ -67,6 +67,7 @@
  *
  */
 
+#if ( CPU_HARDWARE_FP == TRUE ) || ( CPU_SOFTWARE_FP == TRUE )
 #define _Thread_Restart_self()  \
   {  \
      if ( _Thread_Executing->fp_context != NULL ) \
@@ -74,6 +75,12 @@
      \
     _CPU_Context_Restart_self( &_Thread_Executing->Registers ); \
   }
+#else
+#define _Thread_Restart_self()  \
+  {  \
+    _CPU_Context_Restart_self( &_Thread_Executing->Registers ); \
+  }
+#endif
 
 /*PAGE
  *
@@ -96,8 +103,10 @@
  *
  */
 
+#if ( CPU_HARDWARE_FP == TRUE ) || ( CPU_SOFTWARE_FP == TRUE )
 #define _Thread_Is_allocated_fp( _the_thread ) \
         ( (_the_thread) == _Thread_Allocated_fp )
+#endif
 
 /*PAGE
  *
@@ -105,8 +114,10 @@
  *
  */
 
+#if ( CPU_HARDWARE_FP == TRUE ) || ( CPU_SOFTWARE_FP == TRUE )
 #define _Thread_Deallocate_fp() \
         _Thread_Allocated_fp = NULL
+#endif
 
 /*PAGE
  *
-- 
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