Thumb-2: Add some .align statements to the .S files
Since the Thumb-2 instructions can be 16-bit wide, data in the .text
sections may not be aligned to a 32-bit word and this leads to unaligned
exceptions. This patch does not affect the ARM code generation.
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
diff --git a/arch/arm/boot/compressed/head.S b/arch/arm/boot/compressed/head.S
index 4515728..82f5fcf 100644
--- a/arch/arm/boot/compressed/head.S
+++ b/arch/arm/boot/compressed/head.S
@@ -291,6 +291,7 @@
bl decompress_kernel
b call_kernel
+ .align 2
.type LC0, #object
LC0: .word LC0 @ r1
.word __bss_start @ r2
@@ -589,6 +590,7 @@
* methods. Writeback caches _must_ have the flush method
* defined.
*/
+ .align 2
.type proc_types,#object
proc_types:
.word 0x41560600 @ ARM6/610
@@ -945,6 +947,7 @@
* memory, which again must be relocatable.
*/
#ifdef DEBUG
+ .align 2
.type phexbuf,#object
phexbuf: .space 12
.size phexbuf, . - phexbuf
diff --git a/arch/arm/kernel/entry-armv.S b/arch/arm/kernel/entry-armv.S
index fc8af43..0befd1c 100644
--- a/arch/arm/kernel/entry-armv.S
+++ b/arch/arm/kernel/entry-armv.S
@@ -1065,6 +1065,10 @@
ldr lr, [pc, lr, lsl #2]
movs pc, lr @ branch to handler in SVC mode
ENDPROC(vector_\name)
+
+ .align 2
+ @ handler addresses follow this label
+1:
.endm
.globl __stubs_start
diff --git a/arch/arm/kernel/head-common.S b/arch/arm/kernel/head-common.S
index 991952c..dbfaef0 100644
--- a/arch/arm/kernel/head-common.S
+++ b/arch/arm/kernel/head-common.S
@@ -14,6 +14,7 @@
#define ATAG_CORE 0x54410001
#define ATAG_CORE_SIZE ((2*4 + 3*4) >> 2)
+ .align 2
.type __switch_data, %object
__switch_data:
.long __mmap_switched
@@ -185,6 +186,7 @@
* Look in <asm/procinfo.h> and arch/arm/kernel/arch.[ch] for
* more information about the __proc_info and __arch_info structures.
*/
+ .align 2
.long __proc_info_begin
.long __proc_info_end
3: .long .
diff --git a/arch/arm/lib/sha1.S b/arch/arm/lib/sha1.S
index a16fb20..09b548c 100644
--- a/arch/arm/lib/sha1.S
+++ b/arch/arm/lib/sha1.S
@@ -187,6 +187,7 @@
ENDPROC(sha_transform)
+ .align 2
.L_sha_K:
.word 0x5a827999, 0x6ed9eba1, 0x8f1bbcdc, 0xca62c1d6
@@ -195,6 +196,7 @@
* void sha_init(__u32 *buf)
*/
+ .align 2
.L_sha_initial_digest:
.word 0x67452301, 0xefcdab89, 0x98badcfe, 0x10325476, 0xc3d2e1f0
diff --git a/arch/arm/vfp/entry.S b/arch/arm/vfp/entry.S
index a2bed62..4fa9903 100644
--- a/arch/arm/vfp/entry.S
+++ b/arch/arm/vfp/entry.S
@@ -42,6 +42,7 @@
mov pc, lr
ENDPROC(vfp_null_entry)
+ .align 2
.LCvfp:
.word vfp_vector
@@ -61,6 +62,7 @@
mov pc, r9 @ we have handled the fault
ENDPROC(vfp_testing_entry)
+ .align 2
VFP_arch_address:
.word VFP_arch
