Vineet Gupta 2e651ea159 ARC: Unaligned access emulation ...

ARC700 doesn't natively support unaligned access, but can be emulated
-Unaligned Access Exception
-Disassembly at the Fault address to find the exact insn (long/short)

Also per Arnd's comment, we runtime control it using 2 sysctl knobs:
* SYSCTL_ARCH_UNALIGN_ALLOW: Runtime enable/disble
* SYSCTL_ARCH_UNALIGN_NO_WARN: Warn on each emulation attempt

Originally contributed by Tim Yao <tim.yao@amlogic.com>

Signed-off-by: Vineet Gupta <vgupta@synopsys.com>
Cc: Tim Yao <tim.yao@amlogic.com>
Acked-by: Arnd Bergmann <arnd@arndb.de>

2013-02-15 23:16:06 +05:30

..

arcregs.h

ARC: Boot #1: low-level, setup_arch(), /proc/cpuinfo, mem init

2013-02-15 23:15:54 +05:30

asm-offsets.h

ARC: Generic Headers

2013-01-28 12:34:21 +05:30

atomic.h

ARC: Atomic/bitops/cmpxchg/barriers

2013-02-11 20:00:30 +05:30

barrier.h

ARC: Atomic/bitops/cmpxchg/barriers

2013-02-11 20:00:30 +05:30

bitops.h

ARC: Atomic/bitops/cmpxchg/barriers

2013-02-11 20:00:30 +05:30

bug.h

ARC: Fundamental ARCH data-types/defines

2013-02-11 20:00:34 +05:30

byteorder.h

ARC: Checksum/byteorder/swab routines

2013-02-11 20:00:34 +05:30

cache.h

ARC: Cache Flush Management

2013-02-15 23:15:50 +05:30

cachectl.h

ARC: Cache Flush Management

2013-02-15 23:15:50 +05:30

cacheflush.h

ARC: Cache Flush Management

2013-02-15 23:15:50 +05:30

checksum.h

ARC: Checksum/byteorder/swab routines

2013-02-11 20:00:34 +05:30

clk.h

ARC: [DeviceTree] Convert some Kconfig items to runtime values

2013-02-15 23:15:56 +05:30

cmpxchg.h

ARC: Atomic/bitops/cmpxchg/barriers

2013-02-11 20:00:30 +05:30

current.h

ARC: [optim] Cache "current" in Register r25

2013-02-15 23:15:58 +05:30

delay.h

ARC: Timers/counters/delay management

2013-02-11 20:00:39 +05:30

disasm.h

ARC: disassembly (needed by kprobes/kgdb/unaligned-access-emul)

2013-02-15 23:16:04 +05:30

dma-mapping.h

ARC: I/O and DMA Mappings

2013-02-15 23:15:54 +05:30

dma.h

ARC: I/O and DMA Mappings

2013-02-15 23:15:54 +05:30

elf.h

ARC: Fundamental ARCH data-types/defines

2013-02-11 20:00:34 +05:30

entry.h

ARC: SMP support

2013-02-15 23:16:02 +05:30

exec.h

ARC: Fundamental ARCH data-types/defines

2013-02-11 20:00:34 +05:30

futex.h

ARC: Futex support

2013-02-15 23:16:00 +05:30

io.h

ARC: I/O and DMA Mappings

2013-02-15 23:15:54 +05:30

irq.h

ARC: [plat-arcfpga] Static platform device for CONFIG_SERIAL_ARC

2013-02-15 23:15:55 +05:30

irqflags.h

ARC: Support for high priority interrupts in the in-core intc

2013-02-15 23:16:01 +05:30

Kbuild

ARC: Unaligned access emulation

2013-02-15 23:16:06 +05:30

kdebug.h

ARC: Fundamental ARCH data-types/defines

2013-02-11 20:00:34 +05:30

kprobes.h

ARC: kprobes support

2013-02-15 23:16:05 +05:30

linkage.h

ARC: Fundamental ARCH data-types/defines

2013-02-11 20:00:34 +05:30

mmu_context.h

ARC: SMP support

2013-02-15 23:16:02 +05:30

mmu.h

ARC: MMU Context Management

2013-02-15 23:15:51 +05:30

module.h

ARC: DWARF2 .debug_frame based stack unwinder

2013-02-15 23:16:03 +05:30

mutex.h

ARC: SMP support

2013-02-15 23:16:02 +05:30

page.h

ARC: Page Table Management

2013-02-15 23:15:51 +05:30

pgalloc.h

ARC: Page Table Management

2013-02-15 23:15:51 +05:30

pgtable.h

ARC: SMP support

2013-02-15 23:16:02 +05:30

processor.h

ARC: SMP support

2013-02-15 23:16:02 +05:30

prom.h

ARC: [DeviceTree] Basic support

2013-02-15 23:15:55 +05:30

ptrace.h

ARC: Unaligned access emulation

2013-02-15 23:16:06 +05:30

sections.h

ARC: [DeviceTree] Basic support

2013-02-15 23:15:55 +05:30

segment.h

ARC: uaccess friends

2013-02-11 20:00:31 +05:30

setup.h

ARC: Boot #1: low-level, setup_arch(), /proc/cpuinfo, mem init

2013-02-15 23:15:54 +05:30

sigcontext.h

ARC: Signal handling

2013-02-15 23:03:30 +05:30

signal.h

ARC: Signal handling

2013-02-15 23:03:30 +05:30

smp.h

ARC: SMP support

2013-02-15 23:16:02 +05:30

spinlock_types.h

ARC: Spinlock/rwlock/mutex primitives

2013-02-11 20:00:35 +05:30

spinlock.h

ARC: Spinlock/rwlock/mutex primitives

2013-02-11 20:00:35 +05:30

string.h

ARC: String library

2013-02-11 20:00:35 +05:30

swab.h

ARC: Checksum/byteorder/swab routines

2013-02-11 20:00:34 +05:30

switch_to.h

ARC: Process-creation/scheduling/idle-loop

2013-02-11 20:00:38 +05:30

syscall.h

ARC: Syscall support (no-legacy-syscall ABI)

2013-02-11 20:00:38 +05:30

syscalls.h

ARC: Syscall support (no-legacy-syscall ABI)

2013-02-11 20:00:38 +05:30

thread_info.h

ARC: Fundamental ARCH data-types/defines

2013-02-11 20:00:34 +05:30

timex.h

ARC: Timers/counters/delay management

2013-02-11 20:00:39 +05:30

tlb-mmu1.h

ARC: MMU Exception Handling

2013-02-15 23:15:52 +05:30

tlb.h

ARC: TLB flush Handling

2013-02-15 23:15:53 +05:30

tlbflush.h

ARC: TLB flush Handling

2013-02-15 23:15:53 +05:30

uaccess.h

ARC: [optim] uaccess __{get,put}_user() optimised

2013-02-11 20:00:32 +05:30

unaligned.h

ARC: Unaligned access emulation

2013-02-15 23:16:06 +05:30

unistd.h

ARC: Syscall support (no-legacy-syscall ABI)

2013-02-11 20:00:38 +05:30

unwind.h

ARC: DWARF2 .debug_frame based stack unwinder

2013-02-15 23:16:03 +05:30