More endianness porting of the LUFA host mode class drivers.

[pub/USBasp.git] / LUFA / Common / Common.h

diff --git a/LUFA/Common/Common.h b/LUFA/Common/Common.h
index 69c4ff2..87fc08c 100644 (file)
--- a/LUFA/Common/Common.h
+++ b/LUFA/Common/Common.h
@@ -67,10 +67,20 @@
                #include <string.h>
                #include <stddef.h>
                
+               #if defined(USE_LUFA_CONFIG_HEADER)
+                       #include "LUFAConfig.h"
+               #endif
+
+               #include "CompilerSpecific.h"
                #include "Architectures.h"
                #include "Attributes.h"
                #include "BoardTypes.h"
                
+       /* Enable C linkage for C++ Compilers: */
+               #if defined(__cplusplus)
+                       extern "C" {
+               #endif
+
        /* Architecture specific utility includes: */
                #if defined(__DOXYGEN__)
                        /** Type define for an unsigned integer the same width as the selected architecture's machine register.
@@ -159,7 +169,7 @@
 
                        #if (ARCH == ARCH_AVR8) || defined(__DOXYGEN__)
                                /** Defines a volatile \c NOP statement which cannot be optimized out by the compiler, and thus can always
-                                *  be set as a breakpoint in the resulting code. Useful for debugging purposes, where the optimiser
+                                *  be set as a breakpoint in the resulting code. Useful for debugging purposes, where the optimizer
                                 *  removes/reorders code to the point where break points cannot reliably be set.
                                 *
                                 *  \note This macro is not available for all architectures.
@@ -219,31 +229,6 @@
                                        #define pgm_read_ptr(Address)        (void*)pgm_read_word(Address)
                                #endif
                        #endif
-                       
-                       /** Forces GCC to use pointer indirection (via the device's pointer register pairs) when accessing the given
-                        *  struct pointer. In some cases GCC will emit non-optimal assembly code when accessing a structure through
-                        *  a pointer, resulting in a larger binary. When this macro is used on a (non \c const) structure pointer before
-                        *  use, it will force GCC to use pointer indirection on the elements rather than direct store and load
-                        *  instructions.
-                        *
-                        *  \param[in, out] StructPtr  Pointer to a structure which is to be forced into indirect access mode.
-                        */
-                       #define GCC_FORCE_POINTER_ACCESS(StructPtr) __asm__ __volatile__("" : "=b" (StructPtr) : "0" (StructPtr))
-
-                       /** Forces GCC to create a memory barrier, ensuring that memory accesses are not reordered past the barrier point.
-                        *  This can be used before ordering-critical operations, to ensure that the compiler does not re-order the resulting
-                        *  assembly output in an unexpected manner on sections of code that are ordering-specific.
-                        */
-                       #define GCC_MEMORY_BARRIER()                __asm__ __volatile__("" ::: "memory");
-                       
-                       /** Evaluates to boolean true if the specified value can be determined at compile time to be a constant value
-                        *  when compiling under GCC.
-                        *
-                        *  \param[in] x  Value to check compile time constantness of.
-                        *
-                        *  \return Boolean true if the given value is known to be a compile time constant.
-                        */
-                       #define GCC_IS_COMPILE_CONST(x)             __builtin_constant_p(x)
 
                        #if !defined(ISR) || defined(__DOXYGEN__)
                                /** Macro for the definition of interrupt service routines, so that the compiler can insert the required
@@ -390,6 +375,11 @@
                                GCC_MEMORY_BARRIER();
                        }
 
+       /* Disable C linkage for C++ Compilers: */
+               #if defined(__cplusplus)
+                       }
+               #endif
+
 #endif
 
 /** @} */