diff -Naurp gcc/config/avr/avr-devices.c gcc/config/avr/avr-devices.c
---- gcc/config/avr/avr-devices.c 2011-09-02 12:18:00.000000000 +0300
-+++ gcc/config/avr/avr-devices.c 2011-09-02 12:20:38.000000000 +0300
+--- gcc/config/avr/avr-devices.c 2011-06-24 10:38:47.000000000 +0530
++++ gcc/config/avr/avr-devices.c 2011-06-24 10:38:36.000000000 +0530
@@ -262,6 +262,7 @@ const struct mcu_type_s avr_mcu_types[]
- /* Xmega, >= 64K, < 128K FLASH, <= 64K RAM. */
+ /* Xmega, > 64K, <= 128K FLASH, <= 64K RAM. */
{ "avrxmega4", ARCH_AVRXMEGA4, NULL, 0, 0x2000, "x64d3" },
{ "atxmega64a3", ARCH_AVRXMEGA4, "__AVR_ATxmega64A3__", 0, 0x2000, "x64a3" },
+ { "atxmega64a3u", ARCH_AVRXMEGA4, "__AVR_ATxmega64A3U__", 0, 0x2000, "x64a3u"},
{ "atxmega64d3", ARCH_AVRXMEGA4, "__AVR_ATxmega64D3__", 0, 0x2000, "x64d3" },
- /* Xmega, >= 64K, < 128K FLASH, > 64K RAM. */
+ /* Xmega, > 64K, <= 128K FLASH, > 64K RAM. */
{ "avrxmega5", ARCH_AVRXMEGA5, NULL, 0, 0x2000, "x64a1" },
@@ -270,11 +271,14 @@ const struct mcu_type_s avr_mcu_types[]
- /* Xmega, >= 128K, <= 256K FLASH, <= 64K RAM. */
+ /* Xmega, > 128K, <= 256K FLASH, <= 64K RAM. */
{ "avrxmega6", ARCH_AVRXMEGA6, NULL, 0, 0x2000, "x128a3" },
{ "atxmega128a3", ARCH_AVRXMEGA6, "__AVR_ATxmega128A3__", 0, 0x2000, "x128a3" },
+ { "atxmega128a3u",ARCH_AVRXMEGA6, "__AVR_ATxmega128A3U__", 0, 0x2000, "x128a3u"},
{ "atxmega256a3bu", ARCH_AVRXMEGA6, "__AVR_ATxmega256A3BU__", 0, 0x2000, "x256a3bu" },
{ "atxmega256d3", ARCH_AVRXMEGA6, "__AVR_ATxmega256D3__", 0, 0x2000, "x256d3" },
diff -Naurp gcc/config/avr/t-avr gcc/config/avr/t-avr
---- gcc/config/avr/t-avr 2011-09-02 12:18:00.000000000 +0300
-+++ gcc/config/avr/t-avr 2011-09-02 12:20:38.000000000 +0300
-@@ -273,15 +273,19 @@ MULTILIB_MATCHES = \
- mmcu?avrxmega2=mmcu?atxmega32a4 \
+--- gcc/config/avr/t-avr 2011-06-24 10:38:47.000000000 +0530
++++ gcc/config/avr/t-avr 2011-06-24 10:38:36.000000000 +0530
+@@ -272,15 +272,19 @@ MULTILIB_MATCHES = \
mmcu?avrxmega2=mmcu?atxmega32a4u \
+ mmcu?avrxmega2=mmcu?atxmega32x1 \
mmcu?avrxmega4=mmcu?atxmega64a3 \
+ mmcu?avrxmega4=mmcu?atxmega64a3u \
mmcu?avrxmega4=mmcu?atxmega64d3 \