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| author | Dean Camera <dean@fourwalledcubicle.com> | 2011-03-13 21:25:05 +0000 |
|---|---|---|
| committer | Dean Camera <dean@fourwalledcubicle.com> | 2011-03-13 21:25:05 +0000 |
| commit | 6005a42150bf4d713fd962498bde8b540fef4035 (patch) | |
| tree | caebf4a4a487b5544f49123add4d6cc3e9284918 /LUFA/Common | |
| parent | f301a4a21f34bea6c41872258a9dab3263f04e2a (diff) | |
| download | lufa-6005a42150bf4d713fd962498bde8b540fef4035.tar.gz lufa-6005a42150bf4d713fd962498bde8b540fef4035.tar.bz2 lufa-6005a42150bf4d713fd962498bde8b540fef4035.zip | |
Add experimental support for the UC3A0, UC3A1 and UC3A3 series AVR32 microcontrollers.
Diffstat (limited to 'LUFA/Common')
| -rw-r--r-- | LUFA/Common/Common.h | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/LUFA/Common/Common.h b/LUFA/Common/Common.h index c2eeeade5..80bafce3c 100644 --- a/LUFA/Common/Common.h +++ b/LUFA/Common/Common.h @@ -214,6 +214,12 @@ */ #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"); + /* Inline Functions: */ /** Function to reverse the individual bits in a byte - i.e. bit 7 is moved to bit 0, bit 6 to bit 1, * etc. |