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Oliver O'Halloran 6670783606 powerpc/sstep: Fix emulation fall-through 
There is a switch fallthough in instr_analyze() which can cause an
invalid instruction to be emulated as a different, valid, instruction.
The rld* (opcode 30) case extracts a sub-opcode from bits 3:1 of the
instruction word. However, the only valid values of this field are 001
and 000. These cases are correctly handled, but the others are not which
causes execution to fall through into case 31.

Breaking out of the switch causes the instruction to be marked as
unknown and allows the caller to deal with the invalid instruction in a
manner consistent with other invalid instructions.

Signed-off-by: Oliver O'Halloran <oohall@gmail.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
 		2016-05-11 21:54:08 +10:00
..
Makefile Merge branch 'next' of git://git.kernel.org/pub/scm/linux/kernel/git/scottwood/linux into next 2016-03-14 20:05:14 +11:00
alloc.c powerpc: Replace mem_init_done with slab_is_available() 2015-04-10 20:02:48 +10:00
checksum_32.S powerpc: optimise csum_partial() call when len is constant 2016-03-09 10:44:18 -06:00
checksum_64.S powerpc: optimise csum_partial() call when len is constant 2016-03-09 10:44:18 -06:00
checksum_wrappers.c powerpc32: checksum_wrappers_64 becomes checksum_wrappers 2016-03-04 21:47:47 -06:00
code-patching.c powerpc: Move the patch_exception to a common place 2013-12-02 14:06:54 +11:00
copy_32.S powerpc: Make generic_memcpy() private to copy_32.S 2016-04-11 20:30:41 +10:00
copypage_64.S powerpc: Exported functions __clear_user and copy_page use r2 so need _GLOBAL_TOC() 2014-06-05 13:20:41 +10:00
copypage_power7.S powerpc: Change vrX register defines to vX to match gcc and glibc 2015-03-16 18:32:11 +11:00
copyuser_64.S powerpc: Remove power3 from comments 2014-07-28 14:10:26 +10:00
copyuser_power7.S powerpc: Change vrX register defines to vX to match gcc and glibc 2015-03-16 18:32:11 +11:00
crtsavres.S powerpc: Change vrX register defines to vX to match gcc and glibc 2015-03-16 18:32:11 +11:00
div64.S powerpc: Fix a corner case in __div64_32 2005-10-20 09:37:02 +10:00
feature-fixups-test.S powerpc: Ensure the else case of feature sections will fit 2011-01-21 14:08:33 +11:00
feature-fixups.c powerpc: Make a bunch of things static 2014-09-25 23:14:41 +10:00
hweight_64.S powerpc: No need to use dot symbols when branching to a function 2014-04-23 10:05:16 +10:00
ldstfp.S powerpc: Change vsrX register defines to vsX to match gcc and glibc 2015-03-16 18:32:11 +11:00
locks.c cpufreq/ppc: Add missing #include <asm/smp.h> 2015-03-25 16:53:28 +11:00
mem_64.S powerpc: use _GLOBAL_TOC for memmove 2014-07-22 15:56:04 +10:00
memcmp_64.S powerpc: Add 64bit optimised memcmp 2015-01-23 14:02:55 +11:00
memcpy_64.S Merge remote-tracking branch 'anton/abiv2' into next 2014-05-05 20:57:12 +10:00
memcpy_power7.S powerpc: Change vrX register defines to vX to match gcc and glibc 2015-03-16 18:32:11 +11:00
ppc_ksyms.c powerpc: optimise csum_partial() call when len is constant 2016-03-09 10:44:18 -06:00
rheap.c powerpc: Delete unnecessary checks before kfree() 2015-03-16 18:50:14 +11:00
sstep.c powerpc/sstep: Fix emulation fall-through 2016-05-11 21:54:08 +10:00
string.S powerpc: Add 64bit optimised memcmp 2015-01-23 14:02:55 +11:00
string_64.S powerpc: Exported functions __clear_user and copy_page use r2 so need _GLOBAL_TOC() 2014-06-05 13:20:41 +10:00
usercopy_64.c powerpc: Rename files to have consistent _32/_64 suffixes 2005-10-10 21:52:43 +10:00
vmx-helper.c powerpc: Create disable_kernel_{fp,altivec,vsx,spe}() 2015-12-01 13:52:25 +11:00
xor_vmx.c powerpc: rework sparse for lib/xor_vmx.c 2016-04-27 09:33:37 +10:00