Convenient macros to ease ARM code

svn-id: r15038

1 files changed, 75 insertions, 0 deletions

diff --git a/backends/PalmOS/Src/arm/macros.h b/backends/PalmOS/Src/arm/macros.h
new file mode 100644
index 0000000000..7353081af5
--- /dev/null
+++ b/backends/PalmOS/Src/arm/macros.h
@@ -0,0 +1,75 @@
+#ifndef __MACROS_H__
+#define __MACROS_H__ 
+
+#ifndef DISABLE_ARM
+	// macros for ARM calls
+	#define ARM_START(TYPE) \
+			if (OPTIONS_TST(kOptDeviceARM)) { \
+				TYPE data;
+
+	#define ARM_CHECK_EXEC(test)	if (test) {
+	#define ARM_CHECK_END()			}
+
+	#define ARM_ADDP(member)		data.member = &member;
+	#define ARM_ADDM(member)		data.member = member;
+	#define ARM_ADDV(member, var)	data.member = var;
+	#define ARM_INIT(id)			data.funcID = id;
+
+	#define ARM_DATA()		&data
+	#define ARM_CONTINUE()	} else
+	#define ARM_END()		return; \
+						}
+
+	#define PNO_CALL(pno, data)				_PnoCall(&ARM(pno).pnoDesc, data);
+	#define PNO_CALL_RETURN(pno, data, var)	var  = _PnoCall(&ARM(pno).pnoDesc, data);
+
+	#define PCE_CALL(pno, data)				_PceCall(ARM(pno).pnoPtr, data);
+	#define PCE_CALL_RETURN(pno, data, var)	var  = _PceCall(ARM(pno).pnoPtr, data);
+
+#else
+	// no ARM = empty definition
+	#define ARM_START(TYPE)
+
+	#define ARM_CHECK_EXEC(test)
+	#define ARM_CHECK_END()
+
+	#define ARM_ADDP(member)
+	#define ARM_ADDM(member)
+	#define ARM_ADDV(member, var)
+	#define ARM_INIT(id)
+
+	#define ARM_DATA()
+	#define ARM_CONTINUE()
+	#define ARM_END()
+
+	#define PNO_CALL(data)
+	#define PNO_CALL_RETURN(data, var)
+
+	#define PCE_CALL(data)
+	#define PCE_CALL_RETURN(data, var)
+	
+#endif
+
+	// Data access
+	#define  _GETPTR(ptr, base, member, type)	(type)ReadUnaligned32( (byte *)ptr + OffsetOf(base, member) )
+	#define  _SETPTR(base, member, type, var)	type var = _GETPTR(userData68KP, base, member, type);
+
+	#define  _GET32	 _GETPTR
+	#define  _SET32	 _SETPTR
+
+	#define	 _GET16(ptr, base, member, type)	(type)ByteSwap16( ((UInt16 *)((byte *)ptr + OffsetOf(base, member)))[0] )
+	#define  _SET16(base, member, type, var)	type var = _GET16(userData68KP, base, member, type);
+
+	#define  _GET8(ptr, base, member, type)		(type)((byte *)ptr + OffsetOf(base, member))[0]
+	#define  _SET8(base, member, type, var)		type var = _GET8(userData68KP, base, member, type);
+
+	// convenient macros to ease data access
+	#ifdef MAIN_TYPE 
+	#	define SETPTRV(type, member, var)	_SETPTR(MAIN_TYPE, member, type, var)
+	#	define SETPTR(type, member)			_SETPTR(MAIN_TYPE, member, type, member)
+	#	define SET32(type, member)			_SET32 (MAIN_TYPE, member, type, member)
+	#	define SET16(type, member)			_SET16 (MAIN_TYPE, member, type, member)
+	#	define SET8(type, member)			_SET8  (MAIN_TYPE, member, type, member)
+	#endif
+
+#endif
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