linux/arch/xtensa/kernel/align.S, branch v4.5

xtensa: allow single-stepping through unaligned load/store

2014-08-14T07:59:30Z

Update icount when icountlevel is non-zero but not greater than EXCM level when load/store instruction is successfully emulated. This allows single-stepping over such instruction in userspace debugger. Signed-off-by: Max Filippov

xtensa: move invalid unaligned instruction handler closer to its users

2014-08-14T07:59:29Z

With this change a threaded jump from .Linvalid_instruction_load to .Linvalid_instruction can be removed and more code may be added to common load/store exit path. Signed-off-by: Max Filippov

xtensa: make fast_unaligned store restartable

2014-08-14T07:59:28Z

fast_unaligned may encounter DTLB miss or SEGFAULT during the store emulation. Don't update epc1 and lcount until after the store emulation is complete, so that the faulting store instruction could be replayed. Remove duplicate code handling zero overhead loops and calculate new epc1 and lcount in one place. Signed-off-by: Max Filippov

xtensa: add double exception fixup handler for fast_unaligned

2014-08-14T07:59:27Z

fast_unaligned_fixup restores user registers and runs normal exception handler in the current stack frame. Unaligned load/store is retried after that. Signed-off-by: Max Filippov

xtensa: fix kernel/user jump out of fast_unaligned

2014-08-14T07:59:26Z

Use correct register (a0, just read from the PS) to check user mode bit. Signed-off-by: Max Filippov

xtensa: keep a3 and excsave1 on entry to exception handlers

2013-09-06T16:47:41Z

Based on the SMP patch by Joe Taylor and subsequent fixes. Preserve exception table pointer (normally stored in excsave1 SR) as it cannot be easily restored in SMP environment. Signed-off-by: Max Filippov Signed-off-by: Chris Zankel

xtensa: clean up files to make them code-style compliant

2012-12-19T05:10:25Z

Remove heading and trailing spaces, trim trailing lines, and wrap lines that are longer than 80 characters. Signed-off-by: Chris Zankel

xtensa: provide proper assembler function boundaries with ENDPROC()

2012-12-19T05:10:20Z

Use ENDPROC() to mark the end of assembler functions. Signed-off-by: Chris Zankel

xtensa: reorganize SR referencing

2012-10-16T04:48:08Z

- reference SRs by names where possible, not by numbers; - get rid of __stringify around SR names where possible; - remove unneeded SR names from asm/regs.h; - add SREG_ prefix to remaining SR names; Signed-off-by: Max Filippov Signed-off-by: Chris Zankel

[PATCH] xtensa: remove extra header files

2006-12-10T17:55:39Z

The Xtensa port contained many header files that were never needed. This rather lengthy patch removes all those files. Unfortunately, there were many dependencies that needed to be updated, so this patch touches quite a few source files. Signed-off-by: Chris Zankel Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds