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ARM hal_io tweak


Index: hal/arm/arch/current/ChangeLog
===================================================================
RCS file: /cvs/ecos/ecos/packages/hal/arm/arch/current/ChangeLog,v
retrieving revision 1.78
diff -u -p -5 -r1.78 ChangeLog
--- hal/arm/arch/current/ChangeLog	12 Nov 2002 21:45:47 -0000	1.78
+++ hal/arm/arch/current/ChangeLog	11 Dec 2002 14:37:10 -0000
@@ -1,5 +1,10 @@
+2002-12-11  Mark Salter  <msalter@redhat.com>
+
+	* include/hal_io.h: Allow variant or platform HALs to override
+	default IO macros.
+
 2002-11-12  Mark Salter  <msalter@redhat.com>
 
 	* src/arm_stub.c (target_ins): Account for PC prefetch when PC is
 	source register in data processing insns.
 
Index: hal/arm/arch/current/include/hal_io.h
===================================================================
RCS file: /cvs/ecos/ecos/packages/hal/arm/arch/current/include/hal_io.h,v
retrieving revision 1.11
diff -u -p -5 -r1.11 hal_io.h
--- hal/arm/arch/current/include/hal_io.h	23 May 2002 23:01:42 -0000	1.11
+++ hal/arm/arch/current/include/hal_io.h	11 Dec 2002 14:37:10 -0000
@@ -77,10 +77,13 @@
 // IO Register address.
 // This type is for recording the address of an IO register.
 
 typedef volatile CYG_ADDRWORD HAL_IO_REGISTER;
 
+//-----------------------------------------------------------------------------
+// HAL IO macros.
+#ifndef HAL_IO_MACROS_DEFINED
 
 //-----------------------------------------------------------------------------
 // BYTE Register access.
 // Individual and vectorized access to 8 bit registers.
 
@@ -285,10 +288,15 @@ typedef volatile CYG_ADDRWORD HAL_IO_REG
     CYG_MACRO_START                                                     \
     cyg_count32 _i_;                                                    \
     for( _i_ = 0; _i_ < (_count_); _i_++)                               \
         ((volatile CYG_WORD32 *)(_register_))[_i_] = (_buf_)[_i_];      \
     CYG_MACRO_END
+
+
+#define HAL_IO_MACROS_DEFINED
+
+#endif // !HAL_IO_MACROS_DEFINED
 
 // Enforce a flow "barrier" to prevent optimizing compiler from reordering 
 // operations.
 #define HAL_IO_BARRIER()
 


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