diff --git a/bsp/allwinner_tina/link.lds b/bsp/allwinner_tina/link.lds
index eb974dea0f1591aa95d95520e8974616bf2f8223..8fb0e9e84d40e39be38357b5804551d470f880fd 100644
--- a/bsp/allwinner_tina/link.lds
+++ b/bsp/allwinner_tina/link.lds
@@ -82,8 +82,8 @@ SECTIONS
         PROVIDE(__dtors_end__ = .);
     }
 
+    . = ALIGN(8);
     __data_start = .;
-    . = ALIGN(4);
     .data :
     {
         *(.data)
@@ -118,7 +118,7 @@ SECTIONS
     }
     __data_end = .;
 
-    . = ALIGN(4);
+    . = ALIGN(8);
     __bss_start = .;
     .bss       :
     {
diff --git a/bsp/beaglebone/beaglebone_ram.lds b/bsp/beaglebone/beaglebone_ram.lds
index cf9bf6944dd48c9ed9b48b769fbec8026a0f561e..5847cb08dd8d5a2dafe05b18a219f137ba855ec4 100644
--- a/bsp/beaglebone/beaglebone_ram.lds
+++ b/bsp/beaglebone/beaglebone_ram.lds
@@ -57,8 +57,8 @@ SECTIONS
         PROVIDE(__dtors_end__ = .);
     }
 
+    . = ALIGN(8);
     __data_start = .;
-    . = ALIGN(4);
     .data :
     {
         *(.data)
@@ -66,7 +66,7 @@ SECTIONS
     }
     __data_end = .;
 
-    . = ALIGN(4);
+    . = ALIGN(8);
     __bss_start = .;
     .bss       :
     {
diff --git a/bsp/imx6sx/cortex-a9/cpu/start_gcc.S b/bsp/imx6sx/cortex-a9/cpu/start_gcc.S
index 2f16d168075ccab2b00a194fb76ec3b70fcb776f..3ff5a755d5c0774cfcde993fad5681a72a7c1bb4 100644
--- a/bsp/imx6sx/cortex-a9/cpu/start_gcc.S
+++ b/bsp/imx6sx/cortex-a9/cpu/start_gcc.S
@@ -34,6 +34,7 @@
 .globl stack_start
 .globl stack_top
 
+.align 3
 stack_start:
 .rept ISR_Stack_Size
 .byte 0
diff --git a/bsp/imx6sx/cortex-a9/imx6.lds b/bsp/imx6sx/cortex-a9/imx6.lds
index e05132025b70d34cb40bd58e7333986c0eb00f8b..a889774f852ef0d15923d9f3e605ec85c2925857 100644
--- a/bsp/imx6sx/cortex-a9/imx6.lds
+++ b/bsp/imx6sx/cortex-a9/imx6.lds
@@ -65,8 +65,8 @@ SECTIONS
         . += 16K;
     }
 
+    . = ALIGN(8);
     __data_start = .;
-    . = ALIGN(4);
     .data :
     {
         *(.data)
@@ -74,7 +74,7 @@ SECTIONS
     }
     __data_end = .;
 
-    . = ALIGN(4);
+    . = ALIGN(8);
     __bss_start = .;
     .bss       :
     {
diff --git a/bsp/imx6ul/imx6.lds b/bsp/imx6ul/imx6.lds
index d8d7480006d3052342f8134253b3e03f47459ee1..a889774f852ef0d15923d9f3e605ec85c2925857 100644
--- a/bsp/imx6ul/imx6.lds
+++ b/bsp/imx6ul/imx6.lds
@@ -65,8 +65,8 @@ SECTIONS
         . += 16K;
     }
 
+    . = ALIGN(8);
     __data_start = .;
-    . = ALIGN(4);
     .data :
     {
         *(.data)
@@ -74,8 +74,8 @@ SECTIONS
     }
     __data_end = .;
 
-    . = ALIGN(4);
-    __bss_start = __data_end;
+    . = ALIGN(8);
+    __bss_start = .;
     .bss       :
     {
     *(.bss)
diff --git a/bsp/lpc2478/lpc2478_ram.lds b/bsp/lpc2478/lpc2478_ram.lds
index ffdada7a2a662d531144a7bdac8b2958857191e4..28e8cdd7f52a1d49530efc28195b369b1798d0db 100644
--- a/bsp/lpc2478/lpc2478_ram.lds
+++ b/bsp/lpc2478/lpc2478_ram.lds
@@ -19,8 +19,8 @@ SECTIONS
   __rodata_end = .;
 	
 	. = 0xa0100000;
+  . = ALIGN(8);
   __data_start = .;
-  . = ALIGN(4);
   .data : 
   {	
     	*(.data)
@@ -28,8 +28,8 @@ SECTIONS
   }
   __data_end = .;
 
-  . = ALIGN(4);
-  __bss_start = __data_end;
+  . = ALIGN(8);
+  __bss_start = .;
   .bss       :
   {
    *(.bss)
diff --git a/bsp/qemu-vexpress-a9/link.lds b/bsp/qemu-vexpress-a9/link.lds
index 13854a2c015df93ba6600cbb1cfd348bb778a10f..797cd7e3ef8c0707525878d8665574b95186e615 100644
--- a/bsp/qemu-vexpress-a9/link.lds
+++ b/bsp/qemu-vexpress-a9/link.lds
@@ -67,8 +67,8 @@ SECTIONS
         PROVIDE(__dtors_end__ = .);
     }
 
+    . = ALIGN(8);
     __data_start = .;
-    . = ALIGN(4);
     .data :
     {
         *(.data)
@@ -76,8 +76,8 @@ SECTIONS
     }
     __data_end = .;
 
-    . = ALIGN(4);
-    __bss_start = __data_end;
+    . = ALIGN(8);
+    __bss_start = .;
     .bss       :
     {
     *(.bss)
diff --git a/bsp/qemu-vexpress-gemini/cpu/start_gcc.S b/bsp/qemu-vexpress-gemini/cpu/start_gcc.S
index ca8c1f930f0507dc16b43d97fcf70d84471e27e2..0c64d9fecfa5199040df8b761e7b1a9a7249840d 100644
--- a/bsp/qemu-vexpress-gemini/cpu/start_gcc.S
+++ b/bsp/qemu-vexpress-gemini/cpu/start_gcc.S
@@ -48,6 +48,7 @@
 .globl stack_start
 .globl stack_top
 
+.align 3
 stack_start:
 .rept ISR_Stack_Size
 .byte 0
diff --git a/bsp/qemu-vexpress-gemini/vexpress.lds b/bsp/qemu-vexpress-gemini/vexpress.lds
index 96863d3f89ac6e5f55907dde33739ecb05e0e4a2..2e631aa4ae489c24d1a9624ed05f57db0d56a327 100644
--- a/bsp/qemu-vexpress-gemini/vexpress.lds
+++ b/bsp/qemu-vexpress-gemini/vexpress.lds
@@ -57,8 +57,8 @@ SECTIONS
         PROVIDE(__dtors_end__ = .);
     }
 
+    . = ALIGN(8);
     __data_start = .;
-    . = ALIGN(4);
     .data :
     {
         *(.data)
@@ -66,8 +66,8 @@ SECTIONS
     }
     __data_end = .;
 
-    . = ALIGN(4);
-    __bss_start = __data_end;
+    . = ALIGN(8);
+    __bss_start = .;
     .bss       :
     {
     *(.bss)
diff --git a/bsp/raspi2/cpu/start_gcc.S b/bsp/raspi2/cpu/start_gcc.S
index e64563c91e348a3776e5ec96cd0bdca73d8eaa77..b60ad6a38f01d82ff5fb8af648500f82f6e36484 100644
--- a/bsp/raspi2/cpu/start_gcc.S
+++ b/bsp/raspi2/cpu/start_gcc.S
@@ -48,6 +48,7 @@
 .globl stack_start
 .globl stack_top
 
+.align 3
 stack_start:
 .rept ISR_Stack_Size
 .byte 0
diff --git a/bsp/realview-a8/realview.lds b/bsp/realview-a8/realview.lds
index ceaead6969c35012ae9785f3e21a460c435e2208..f58622884040db2a828ac6550e96e0ea76112c24 100644
--- a/bsp/realview-a8/realview.lds
+++ b/bsp/realview-a8/realview.lds
@@ -57,8 +57,8 @@ SECTIONS
         PROVIDE(__dtors_end__ = .);
     }
 
+    . = ALIGN(8);
     __data_start = .;
-    . = ALIGN(4);
     .data :
     {
         *(.data)
@@ -66,8 +66,8 @@ SECTIONS
     }
     __data_end = .;
 
-    . = ALIGN(4);
-    __bss_start = __data_end;
+    . = ALIGN(8);
+    __bss_start = .;
     .bss       :
     {
     *(.bss)
diff --git a/libcpu/arm/am335x/start_gcc.S b/libcpu/arm/am335x/start_gcc.S
index 6b76fb04a43c4f2f10ca447ccf7606cc85fb54c7..7e996e2a8004ad58499168dd5ed5dcd0ab2e09c3 100644
--- a/libcpu/arm/am335x/start_gcc.S
+++ b/libcpu/arm/am335x/start_gcc.S
@@ -33,6 +33,7 @@
 .globl stack_start
 .globl stack_top
 
+.align 3
 stack_start:
 .rept ISR_Stack_Size
 .long 0
diff --git a/libcpu/arm/cortex-a/start_gcc.S b/libcpu/arm/cortex-a/start_gcc.S
index 91faa0e3ff94eef6321b8709a18e5acbfa76f8b3..268cc7ef5618d2b61da732a86e2b2d4557d9bf05 100644
--- a/libcpu/arm/cortex-a/start_gcc.S
+++ b/libcpu/arm/cortex-a/start_gcc.S
@@ -41,6 +41,7 @@
 .globl stack_start
 .globl stack_top
 
+.align 3
 stack_start:
 .rept ISR_Stack_Size
 .byte 0
diff --git a/libcpu/arm/cortex-r4/start_gcc.S b/libcpu/arm/cortex-r4/start_gcc.S
index ab77b98781ceb34c4d4730437fb35abc48943263..a347503ec053f18f164e77135264476d690e166c 100644
--- a/libcpu/arm/cortex-r4/start_gcc.S
+++ b/libcpu/arm/cortex-r4/start_gcc.S
@@ -36,6 +36,7 @@
 .globl stack_start
 .globl stack_top
 
+.align 3
 stack_start:
 .rept (UND_Stack_Size + SVC_Stack_Size + ABT_Stack_Size + FIQ_Stack_Size + IRQ_Stack_Size)
 .byte 0
diff --git a/libcpu/arm/realview-a8-vmm/start_gcc.S b/libcpu/arm/realview-a8-vmm/start_gcc.S
index 2ec7fe6c865c3ef03eddb3b49a305610326b0127..879cf992a873681fcc438df2ff5614665b9fe10d 100644
--- a/libcpu/arm/realview-a8-vmm/start_gcc.S
+++ b/libcpu/arm/realview-a8-vmm/start_gcc.S
@@ -47,6 +47,7 @@
 .globl stack_start
 .globl stack_top
 
+.align 3
 stack_start:
 .rept ISR_Stack_Size
 .byte 0
diff --git a/libcpu/arm/zynq7000/start_gcc.S b/libcpu/arm/zynq7000/start_gcc.S
index 6904c45587106c51daf718ed63e09e964990e83f..18056f0ad92db348915d008b2c29bf9c33039c46 100644
--- a/libcpu/arm/zynq7000/start_gcc.S
+++ b/libcpu/arm/zynq7000/start_gcc.S
@@ -33,6 +33,7 @@
 .globl stack_start
 .globl stack_top
 
+.align 3
 .bss
 stack_start:
 .rept ISR_Stack_Size