diff --git a/os/common/ports/ARM/compilers/GCC/chtypes.h b/os/common/ports/ARM/compilers/GCC/chtypes.h
index a34c5bd04..bc0c8dc20 100644
--- a/os/common/ports/ARM/compilers/GCC/chtypes.h
+++ b/os/common/ports/ARM/compilers/GCC/chtypes.h
@@ -74,14 +74,14 @@ typedef uint32_t            ucnt_t;         /**< Generic unsigned counter.  */
  * @brief   ROM constant modifier.
  * @note    It is set to use the "const" keyword in this port.
  */
-#define ROMCONST const
+#define ROMCONST            const
 
 /**
  * @brief   Makes functions not inlineable.
- * @note    If the compiler does not support such attribute then the
- *          realtime counter precision could be degraded.
+ * @note    If the compiler does not support such attribute then some
+ *          time-dependent services could be degraded.
  */
-#define NOINLINE __attribute__((noinline))
+#define NOINLINE            __attribute__((noinline))
 
 /**
  * @brief   Optimized thread function declaration macro.
@@ -91,12 +91,24 @@ typedef uint32_t            ucnt_t;         /**< Generic unsigned counter.  */
 /**
  * @brief   Packed variable specifier.
  */
-#define PACKED_VAR __attribute__((packed))
+#define PACKED_VAR          __attribute__((packed))
 
 /**
  * @brief   Memory alignment enforcement for variables.
  */
-#define ALIGNED_VAR(n) __attribute__((aligned(n)))
+#define ALIGNED_VAR(n)      __attribute__((aligned(n)))
+
+/**
+ * @brief   Size of a pointer.
+ * @note    To be used where the sizeof operator cannot be used, preprocessor
+ *          expressions for example.
+ */
+#define SIZEOF_PTR          4
+
+/**
+ * @brief   True if alignment is low-high in current architecture.
+ */
+#define REVERSE_ORDER       1
 
 #endif /* CHTYPES_H */
 
diff --git a/os/common/ports/ARMCMx/compilers/GCC/chtypes.h b/os/common/ports/ARMCMx/compilers/GCC/chtypes.h
index 8c03899d7..e91763c10 100644
--- a/os/common/ports/ARMCMx/compilers/GCC/chtypes.h
+++ b/os/common/ports/ARMCMx/compilers/GCC/chtypes.h
@@ -74,14 +74,14 @@ typedef uint32_t            ucnt_t;         /**< Generic unsigned counter.  */
  * @brief   ROM constant modifier.
  * @note    It is set to use the "const" keyword in this port.
  */
-#define ROMCONST const
+#define ROMCONST            const
 
 /**
  * @brief   Makes functions not inlineable.
- * @note    If the compiler does not support such attribute then the
- *          realtime counter precision could be degraded.
+ * @note    If the compiler does not support such attribute then some
+ *          time-dependent services could be degraded.
  */
-#define NOINLINE __attribute__((noinline))
+#define NOINLINE           __attribute__((noinline))
 
 /**
  * @brief   Optimized thread function declaration macro.
@@ -91,12 +91,24 @@ typedef uint32_t            ucnt_t;         /**< Generic unsigned counter.  */
 /**
  * @brief   Packed variable specifier.
  */
-#define PACKED_VAR __attribute__((packed))
+#define PACKED_VAR         __attribute__((packed))
 
 /**
  * @brief   Memory alignment enforcement for variables.
  */
-#define ALIGNED_VAR(n) __attribute__((aligned(n)))
+#define ALIGNED_VAR(n)      __attribute__((aligned(n)))
+
+/**
+ * @brief   Size of a pointer.
+ * @note    To be used where the sizeof operator cannot be used, preprocessor
+ *          expressions for example.
+ */
+#define SIZEOF_PTR          4
+
+/**
+ * @brief   True if alignment is low-high in current architecture.
+ */
+#define REVERSE_ORDER       1
 
 #endif /* CHTYPES_H */
 
diff --git a/os/common/ports/ARMCMx/compilers/IAR/chtypes.h b/os/common/ports/ARMCMx/compilers/IAR/chtypes.h
index 1cec367f0..07287e5cc 100644
--- a/os/common/ports/ARMCMx/compilers/IAR/chtypes.h
+++ b/os/common/ports/ARMCMx/compilers/IAR/chtypes.h
@@ -74,14 +74,14 @@ typedef uint32_t            ucnt_t;         /**< Generic unsigned counter.  */
  * @brief   ROM constant modifier.
  * @note    It is set to use the "const" keyword in this port.
  */
-#define ROMCONST const
+#define ROMCONST            const
 
 /**
  * @brief   Makes functions not inlineable.
- * @note    If the compiler does not support such attribute then the
- *          realtime counter precision could be degraded.
+ * @note    If the compiler does not support such attribute then some
+ *          time-dependent services could be degraded.
  */
-#define NOINLINE
+#define NOINLINE            _Pragma("inline=never")
 
 /**
  * @brief   Optimized thread function declaration macro.
@@ -91,12 +91,24 @@ typedef uint32_t            ucnt_t;         /**< Generic unsigned counter.  */
 /**
  * @brief   Packed variable specifier.
  */
-#define PACKED_VAR __packed
+#define PACKED_VAR          __packed
 
 /**
  * @brief   Memory alignment enforcement for variables.
  */
-#define ALIGNED_VAR(n) __attribute__((aligned(n)))
+#define ALIGNED_VAR(n)      _Pragma(__CH_STRINGIFY(data_alignment=##n))
+
+/**
+ * @brief   Size of a pointer.
+ * @note    To be used where the sizeof operator cannot be used, preprocessor
+ *          expressions for example.
+ */
+#define SIZEOF_PTR          4
+
+/**
+ * @brief   True if alignment is low-high in current architecture.
+ */
+#define REVERSE_ORDER       1
 
 #endif /* CHTYPES_H */
 
diff --git a/os/common/ports/ARMCMx/compilers/RVCT/chtypes.h b/os/common/ports/ARMCMx/compilers/RVCT/chtypes.h
index 73a960376..0b24b648b 100644
--- a/os/common/ports/ARMCMx/compilers/RVCT/chtypes.h
+++ b/os/common/ports/ARMCMx/compilers/RVCT/chtypes.h
@@ -74,14 +74,14 @@ typedef uint32_t            ucnt_t;         /**< Generic unsigned counter.  */
  * @brief   ROM constant modifier.
  * @note    It is set to use the "const" keyword in this port.
  */
-#define ROMCONST const
+#define ROMCONST            const
 
 /**
  * @brief   Makes functions not inlineable.
- * @note    If the compiler does not support such attribute then the
- *          realtime counter precision could be degraded.
+ * @note    If the compiler does not support such attribute then some
+ *          time-dependent services could be degraded.
  */
-#define NOINLINE
+#define NOINLINE            __attribute__((noinline))
 
 /**
  * @brief   Optimized thread function declaration macro.
@@ -91,12 +91,24 @@ typedef uint32_t            ucnt_t;         /**< Generic unsigned counter.  */
 /**
  * @brief   Packed variable specifier.
  */
-#define PACKED_VAR __packed
+#define PACKED_VAR          __packed
 
 /**
  * @brief   Memory alignment enforcement for variables.
  */
-#define ALIGNED_VAR(n) __attribute__((aligned(n)))
+#define ALIGNED_VAR(n)      __attribute__((aligned(n)))
+
+/**
+ * @brief   Size of a pointer.
+ * @note    To be used where the sizeof operator cannot be used, preprocessor
+ *          expressions for example.
+ */
+#define SIZEOF_PTR          4
+
+/**
+ * @brief   True if alignment is low-high in current architecture.
+ */
+#define REVERSE_ORDER       1
 
 #endif /* CHTYPES_H */
 
diff --git a/os/common/ports/AVR/compilers/GCC/chtypes.h b/os/common/ports/AVR/compilers/GCC/chtypes.h
index 8222a3f8e..91215dde7 100644
--- a/os/common/ports/AVR/compilers/GCC/chtypes.h
+++ b/os/common/ports/AVR/compilers/GCC/chtypes.h
@@ -74,14 +74,14 @@ typedef uint8_t             ucnt_t;         /**< Generic unsigned counter.  */
  * @brief   ROM constant modifier.
  * @note    It is set to use the "const" keyword in this port.
  */
-#define ROMCONST const
+#define ROMCONST            const
 
 /**
  * @brief   Makes functions not inlineable.
  * @note    If the compiler does not support such attribute then the
  *          realtime counter precision could be degraded.
  */
-#define NOINLINE __attribute__((noinline))
+#define NOINLINE            __attribute__((noinline))
 
 /**
  * @brief   Optimized thread function declaration macro.
@@ -91,12 +91,24 @@ typedef uint8_t             ucnt_t;         /**< Generic unsigned counter.  */
 /**
  * @brief   Packed variable specifier.
  */
-#define PACKED_VAR __attribute__((packed))
+#define PACKED_VAR          __attribute__((packed))
 
 /**
  * @brief   Memory alignment enforcement for variables.
  */
-#define ALIGNED_VAR(n) __attribute__((aligned(n)))
+#define ALIGNED_VAR(n)      __attribute__((aligned(n)))
+
+/**
+ * @brief   Size of a pointer.
+ * @note    To be used where the sizeof operator cannot be used, preprocessor
+ *          expressions for example.
+ */
+#define SIZEOF_PTR          2
+
+/**
+ * @brief   True if alignment is low-high in current architecture.
+ */
+#define REVERSE_ORDER       1
 
 #endif /* CHTYPES_H */
 
diff --git a/os/common/ports/SIMIA32/compilers/GCC/chtypes.h b/os/common/ports/SIMIA32/compilers/GCC/chtypes.h
index db35061be..330c798ab 100644
--- a/os/common/ports/SIMIA32/compilers/GCC/chtypes.h
+++ b/os/common/ports/SIMIA32/compilers/GCC/chtypes.h
@@ -86,14 +86,14 @@ typedef uint32_t            ucnt_t;         /**< Generic unsigned counter.  */
  * @brief   ROM constant modifier.
  * @note    It is set to use the "const" keyword in this port.
  */
-#define ROMCONST const
+#define ROMCONST            const
 
 /**
  * @brief   Makes functions not inlineable.
- * @note    If the compiler does not support such attribute then the
- *          realtime counter precision could be degraded.
+ * @note    If the compiler does not support such attribute then some
+ *          time-dependent services could be degraded.
  */
-#define NOINLINE __attribute__((noinline))
+#define NOINLINE            __attribute__((noinline))
 
 /**
  * @brief   Optimized thread function declaration macro.
@@ -103,12 +103,24 @@ typedef uint32_t            ucnt_t;         /**< Generic unsigned counter.  */
 /**
  * @brief   Packed variable specifier.
  */
-#define PACKED_VAR __attribute__((packed))
+#define PACKED_VAR          __attribute__((packed))
 
 /**
  * @brief   Memory alignment enforcement for variables.
  */
-#define ALIGNED_VAR(n) __attribute__((aligned(n)))
+#define ALIGNED_VAR(n)      __attribute__((aligned(n)))
+
+/**
+ * @brief   Size of a pointer.
+ * @note    To be used where the sizeof operator cannot be used, preprocessor
+ *          expressions for example.
+ */
+#define SIZEOF_PTR          4
+
+/**
+ * @brief   True if alignment is low-high in current architecture.
+ */
+#define REVERSE_ORDER       1
 
 #endif /* CHTYPES_H */
 
diff --git a/os/common/ports/e200/compilers/CW/chtypes.h b/os/common/ports/e200/compilers/CW/chtypes.h
index f8e6f2691..b2c55a5eb 100644
--- a/os/common/ports/e200/compilers/CW/chtypes.h
+++ b/os/common/ports/e200/compilers/CW/chtypes.h
@@ -74,14 +74,14 @@ typedef uint32_t            ucnt_t;         /**< Generic unsigned counter.  */
  * @brief   ROM constant modifier.
  * @note    It is set to use the "const" keyword in this port.
  */
-#define ROMCONST const
+#define ROMCONST            const
 
 /**
  * @brief   Makes functions not inlineable.
- * @note    If the compiler does not support such attribute then the
- *          realtime counter precision could be degraded.
+ * @note    If the compiler does not support such attribute then some
+ *          time-dependent services could be degraded.
  */
-#define NOINLINE __attribute__((noinline))
+#define NOINLINE            __attribute__((noinline))
 
 /**
  * @brief   Optimized thread function declaration macro.
@@ -91,12 +91,24 @@ typedef uint32_t            ucnt_t;         /**< Generic unsigned counter.  */
 /**
  * @brief   Packed variable specifier.
  */
-#define PACKED_VAR __attribute__((packed))
+#define PACKED_VAR          __attribute__((packed))
 
 /**
  * @brief   Memory alignment enforcement for variables.
  */
-#define ALIGNED_VAR(n) __attribute__((aligned(n)))
+#define ALIGNED_VAR(n)      __attribute__((aligned(n)))
+
+/**
+ * @brief   Size of a pointer.
+ * @note    To be used where the sizeof operator cannot be used, preprocessor
+ *          expressions for example.
+ */
+#define SIZEOF_PTR          4
+
+/**
+ * @brief   True if alignment is low-high in current architecture.
+ */
+#define REVERSE_ORDER       0
 
 #endif /* CHTYPES_H */
 
diff --git a/os/common/ports/e200/compilers/GCC/chtypes.h b/os/common/ports/e200/compilers/GCC/chtypes.h
index 124874850..20a601e93 100644
--- a/os/common/ports/e200/compilers/GCC/chtypes.h
+++ b/os/common/ports/e200/compilers/GCC/chtypes.h
@@ -74,14 +74,14 @@ typedef uint32_t            ucnt_t;         /**< Generic unsigned counter.  */
  * @brief   ROM constant modifier.
  * @note    It is set to use the "const" keyword in this port.
  */
-#define ROMCONST const
+#define ROMCONST            const
 
 /**
  * @brief   Makes functions not inlineable.
- * @note    If the compiler does not support such attribute then the
- *          realtime counter precision could be degraded.
+ * @note    If the compiler does not support such attribute then some
+ *          time-dependent services could be degraded.
  */
-#define NOINLINE __attribute__((noinline))
+#define NOINLINE            __attribute__((noinline))
 
 /**
  * @brief   Optimized thread function declaration macro.
@@ -91,12 +91,24 @@ typedef uint32_t            ucnt_t;         /**< Generic unsigned counter.  */
 /**
  * @brief   Packed variable specifier.
  */
-#define PACKED_VAR __attribute__((packed))
+#define PACKED_VAR          __attribute__((packed))
 
 /**
  * @brief   Memory alignment enforcement for variables.
  */
-#define ALIGNED_VAR(n) __attribute__((aligned(n)))
+#define ALIGNED_VAR(n)      __attribute__((aligned(n)))
+
+/**
+ * @brief   Size of a pointer.
+ * @note    To be used where the sizeof operator cannot be used, preprocessor
+ *          expressions for example.
+ */
+#define SIZEOF_PTR          4
+
+/**
+ * @brief   True if alignment is low-high in current architecture.
+ */
+#define REVERSE_ORDER       0
 
 #endif /* CHTYPES_H */
 
diff --git a/os/common/ports/templates/chtypes.h b/os/common/ports/templates/chtypes.h
index fa63f8898..eb75204c4 100644
--- a/os/common/ports/templates/chtypes.h
+++ b/os/common/ports/templates/chtypes.h
@@ -78,14 +78,14 @@ typedef uint32_t            ucnt_t;         /**< Generic unsigned counter.  */
  * @brief   ROM constant modifier.
  * @note    It is set to use the "const" keyword in this port.
  */
-#define ROMCONST const
+#define ROMCONST            const
 
 /**
  * @brief   Makes functions not inlineable.
  * @note    If the compiler does not support such attribute then the
  *          realtime counter precision could be degraded.
  */
-#define NOINLINE __attribute__((noinline))
+#define NOINLINE            __attribute__((noinline))
 
 /**
  * @brief   Optimized thread function declaration macro.
@@ -95,12 +95,24 @@ typedef uint32_t            ucnt_t;         /**< Generic unsigned counter.  */
 /**
  * @brief   Packed variable specifier.
  */
-#define PACKED_VAR __attribute__((packed))
+#define PACKED_VAR          __attribute__((packed))
 
 /**
  * @brief   Memory alignment enforcement for variables.
  */
-#define ALIGNED_VAR(n) __attribute__((aligned(n)))
+#define ALIGNED_VAR(n)      __attribute__((aligned(n)))
+
+/**
+ * @brief   Size of a pointer.
+ * @note    To be used where the sizeof operator cannot be used, preprocessor
+ *          expressions for example.
+ */
+#define SIZEOF_PTR          4
+
+/**
+ * @brief   True if alignment is low-high in current architecture.
+ */
+#define REVERSE_ORDER       1
 
 #endif /* CHTYPES_H */