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authorCatalin Marinas <catalin.marinas@arm.com>2009-05-30 17:00:18 +0400
committerCatalin Marinas <catalin.marinas@arm.com>2009-05-30 17:00:18 +0400
commit26584853a44c58f3d6ac7360d697a2ddcd1a3efa (patch)
treea47156d781c6207d316746a056a81ca82b90d452 /arch/arm/mm/abort-ev6.S
parentee8c9571191e588ede9a220ded807e33c4897d91 (diff)
downloadlinux-26584853a44c58f3d6ac7360d697a2ddcd1a3efa.tar.xz
Add core support for ARMv6/v7 big-endian
Starting with ARMv6, the CPUs support the BE-8 variant of big-endian (byte-invariant). This patch adds the core support: - setting of the BE-8 mode via the CPSR.E register for both kernel and user threads - big-endian page table walking - REV used to rotate instructions read from memory during fault processing as they are still little-endian format - Kconfig and Makefile support for BE-8. The --be8 option must be passed to the final linking stage to convert the instructions to little-endian Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
Diffstat (limited to 'arch/arm/mm/abort-ev6.S')
-rw-r--r--arch/arm/mm/abort-ev6.S3
1 files changed, 3 insertions, 0 deletions
diff --git a/arch/arm/mm/abort-ev6.S b/arch/arm/mm/abort-ev6.S
index 6f7e70907e44..f332df7f0d37 100644
--- a/arch/arm/mm/abort-ev6.S
+++ b/arch/arm/mm/abort-ev6.S
@@ -37,6 +37,9 @@ ENTRY(v6_early_abort)
movne pc, lr
do_thumb_abort
ldreq r3, [r2] @ read aborted ARM instruction
+#ifdef CONFIG_CPU_ENDIAN_BE8
+ reveq r3, r3
+#endif
do_ldrd_abort
tst r3, #1 << 20 @ L = 0 -> write
orreq r1, r1, #1 << 11 @ yes.