ac64a9caa5
microblaze: Fix stack usage in PAGE_SIZE copy_tofrom_user
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If access to user space failed we need to reconstruct
stack pointer and restore all register.
This patch fixed problem introduces by:
"microblaze: Add loop unrolling for PAGE in copy_tofrom_user"
(sha1: ebe211254b
2012-03-30 11:37:13 +02:00
cb5edfe3e5
microblaze: Use delay slot in __strnlen_user, __strncpy_user
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Use delay slot to speedup if maxlen is zero.
Signed-off-by: Michal Simek <monstr@monstr.eu>
2011-10-14 12:24:34 +02:00
ebe211254b
microblaze: Add loop unrolling for PAGE in copy_tofrom_user
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Increase performance by loop unrolling.
Signed-off-by: Michal Simek <monstr@monstr.eu>
2011-10-14 12:24:26 +02:00
782d491fc2
microblaze: Simplify logic for unaligned byte copying
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Save jump instruction for unaligned byte copying.
Signed-off-by: Michal Simek <monstr@monstr.eu>
2011-10-14 12:24:25 +02:00
c83858b3e6
microblaze: Change label names - copy_tofrom_user
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Change label name to be prepared for loop unrolling.
Signed-off-by: Michal Simek <monstr@monstr.eu>
2011-10-14 12:24:22 +02:00
eedac7914d
microblaze: Separate fixup section definition
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Move fixups below appropriate code.
Signed-off-by: Michal Simek <monstr@monstr.eu>
2011-10-14 12:24:22 +02:00
9b133f8d87
microblaze: Change label name in copy_tofrom_user
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Use label 0: for zero length copying and fixups.
Signed-off-by: Michal Simek <monstr@monstr.eu>
2011-10-14 12:24:21 +02:00
ca3865bae5
microblaze: Support word copying in copy_tofrom_user
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Word copying is used only for aligned addresses.
Here is space for improving to use any better copying technique.
Look at memcpy implementation.
Signed-off-by: Michal Simek <monstr@monstr.eu>
2010-04-01 08:38:25 +02:00
13851966da
microblaze: Add .type and .size to ASM functions
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Cachegrind analysis need this fix to be able to log asm functions.
Signed-off-by: Michal Simek <monstr@monstr.eu>
2010-04-01 08:38:24 +02:00
0d6de95326
microblaze_mmu_v2: uaccess MMU update
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Signed-off-by: Michal Simek <monstr@monstr.eu>
2009-05-26 16:45:20 +02:00
Michal Simek