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* ARC: Reduce #ifdef'ery for unaligned access emulationVineet Gupta2013-11-061-2/+1Star
| | | | | | | Emulation not enabled is treated as if the fixup failed, so no need for special #ifdef checks. Signed-off-by: Vineet Gupta <vgupta@synopsys.com>
* ARC: Remove explicit passing around of ECRVineet Gupta2013-06-261-28/+24Star
| | | | | | | | | | | | With ECR now part of pt_regs * No need to propagate from lowest asm handlers as arg * No need to save it in tsk->thread.cause_code * Avoid bit chopping to access the bit-fields More code consolidation, cleanup Signed-off-by: Vineet Gupta <vgupta@synopsys.com>
* ARC: unaligned access emulation error handling consolidationVineet Gupta2013-05-071-13/+4Star
| | | | | | | If CONFIG_ARC_MISALIGN_ACCESS is not enabled, or if the fixup fails, call the same error handler: same signal/si_code to user (SIGBUS) Signed-off-by: Vineet Gupta <vgupta@synopsys.com>
* ARC: [build] Build failure with !KPROBESChristian Ruppert2013-04-091-0/+1
| | | | | | | | arch/arc/kernel/traps.c no longer compiles without explicitly including asm/kprobes.h Signed-off-by: Christian Ruppert <christian.ruppert@abilis.com> Signed-off-by: Vineet Gupta <vgupta@synopsys.com>
* ARC: Use <linux/*> headers instead of <asm/*>Sachin Kamat2013-04-091-3/+3
| | | | | | | | | | | | Silences the following checkpatch warnings: WARNING: Use #include <linux/ptrace.h> instead of <asm/ptrace.h> WARNING: Use #include <linux/kprobes.h> instead of <asm/kprobes.h> WARNING: Use #include <linux/kgdb.h> instead of <asm/kgdb.h> WARNING: Use #include <linux/uaccess.h> instead of <asm/uaccess.h> WARNING: Use #include <linux/cache.h> instead of <asm/cache.h> Signed-off-by: Sachin Kamat <sachin.kamat@linaro.org> Signed-off-by: Vineet Gupta <vgupta@synopsys.com>
* ARC: kgdb supportMischa Jonker2013-02-151-0/+6
| | | | | | | Signed-off-by: Mischa Jonker <mjonker@synopsys.com> Signed-off-by: Vineet Gupta <vgupta@synopsys.com> Cc: Jason Wessel <jason.wessel@windriver.com> Acked-by: Jason Wessel <jason.wessel@windriver.com>
* ARC: Unaligned access emulationVineet Gupta2013-02-151-0/+26
| | | | | | | | | | | | | | | | 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>
* ARC: kprobes supportVineet Gupta2013-02-151-0/+13
| | | | | | | Origin port done by Rajeshwar Ranga Signed-off-by: Vineet Gupta <vgupta@synopsys.com> Cc: Rajeshwar Ranga <rajeshwar.ranga@gmail.com>
* ARC: Non-MMU Exception HandlingVineet Gupta2013-02-111-0/+125
Signed-off-by: Vineet Gupta <vgupta@synopsys.com>
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