ahoneybun/qmk_firmware
1
0
Fork 0
Code Issues Pull requests Projects Releases Packages Wiki Activity Actions

Add experimental support for the UC3A0, UC3A1 and UC3A3 series AVR32 microcontrollers.

Browse source
This commit is contained in:
Dean Camera 2011-03-13 21:25:05 +00:00
parent f301a4a21f
commit 6005a42150
5 changed files with 78 additions and 22 deletions
Download patch file Download diff file Expand all files Collapse all files

6
LUFA/Common/Common.h
View file

@ -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.