bwlp/qemu.git/target-ppc, branch spice_video_codecs

Move target-* CPU file into a target/ folder

2016-12-20T20:52:12+00:00

We've currently got 18 architectures in QEMU, and thus 18 target-xxx folders in the root folder of the QEMU source tree. More architectures (e.g. RISC-V, AVR) are likely to be included soon, too, so the main folder of the QEMU sources slowly gets quite overcrowded with the target-xxx folders. To disburden the main folder a little bit, let's move the target-xxx folders into a dedicated target/ folder, so that target-xxx/ simply becomes target/xxx/ instead. Acked-by: Laurent Vivier [m68k part] Acked-by: Bastian Koppelmann [tricore part] Acked-by: Michael Walle [lm32 part] Acked-by: Cornelia Huck [s390x part] Reviewed-by: Christian Borntraeger [s390x part] Acked-by: Eduardo Habkost [i386 part] Acked-by: Artyom Tarasenko [sparc part] Acked-by: Richard Henderson [alpha part] Acked-by: Max Filippov [xtensa part] Reviewed-by: David Gibson [ppc part] Acked-by: Edgar E. Iglesias [crisµblaze part] Acked-by: Guan Xuetao [unicore32 part] Signed-off-by: Thomas Huth

target-ppc: Allow eventual removal of old migration mistakes

2016-11-23T01:00:48+00:00

Until very recently, the vmstate for ppc cpus included some poorly thought out VMSTATE_EQUAL() components, that can easily break migration compatibility, and did so between qemu-2.6 and later versions. A hack was recently added which fixes this migration breakage, but it leaves the unhelpful cruft of these fields in the migration stream. This patch adds a new cpu property allowing these fields to be removed from the stream entirely. For the pseries-2.8 machine type - which comes after the fix - and for all non-pseries machine types - which aren't mature enough to care about cross-version migration - we remove the fields from the stream. For pseries-2.7 and earlier, The migration hack remains in place, allowing backwards and forwards migration with the older machine types. This restricts the migration compatibility cruft to older machine types, and at least opens the possibility of eventually deprecating and removing it entirely. Signed-off-by: David Gibson Reviewed-by: Dr. David Alan Gilbert Reviewed-by: Thomas Huth Reviewed-by: Greg Kurz Reviewed-by: Alexey Kardashevskiy

target-ppc: Fix CPU migration from qemu-2.6 <-> later versions

2016-11-23T01:00:48+00:00

When migration for target-ppc was converted to vmstate, several VMSTATE_EQUAL() checks were foolishly included of things that really should be internal state. Specifically we verified equality of the insns_flags and insns_flags2 fields, which are used within TCG to determine which groups of instructions are available on this cpu model. Between qemu-2.6 and qemu-2.7 we made some changes to these classes which broke migration. This path fixes migration both forwards and backwards. On migration from 2.6 to later versions we import the fields into teporary variables, which we then ignore. In migration backwards, we populate the temporary fields from the runtime fields, but mask out the bits which were added after qemu-2.6, allowing the VMSTATE_EQUAL in qemu-2.6 to accept the stream. Signed-off-by: David Gibson Reviewed-by: Dr. David Alan Gilbert Reviewed-by: Thomas Huth Reviewed-by: Greg Kurz

target-ppc: fix index array of national digits

2016-11-23T01:00:48+00:00

Fixes the big endian array access of national digits, from commits b815587 and e2106d7. Signed-off-by: Jose Ricardo Ziviani Reviewed-by: Thomas Huth Signed-off-by: David Gibson

ppc: BOOK3E: nothing should be done when MSR:PR is set

2016-11-23T01:00:48+00:00

The server architecture (BOOK3S) specifies that any instruction that sets MSR:PR will also set MSR:EE, IR and DR. However there is no such behavior specification for the embedded architecture (BOOK3E). Signed-off-by: Vladimir Svoboda Signed-off-by: David Gibson Reviewed-by: Thomas Huth

FU exceptions should carry a cause (IC)

2016-11-14T23:08:43+00:00

As per the ISA we need a cause and executing a tabort r9 in libc for example causes a EXCP_FU exception, we don't wire up the IC (cause) when we post the exception. The cause is required for the kernel to do the right thing. The fix applies only to 64 bit ppc targets. Signed-off-by: Balbir singh Signed-off-by: David Gibson

target-ppc: Implement bcdctz. instruction

2016-11-14T23:06:48+00:00

bcdctz. converts from BCD to Zoned numeric format. Zoned format uses a byte to represent a digit where the most significant nibble is 0x3 or 0xf, depending on the preferred signal. Signed-off-by: Jose Ricardo Ziviani Signed-off-by: David Gibson

target-ppc: Implement bcdcfz. instruction

2016-11-14T23:06:48+00:00

bcdcfz. converts from Zoned numeric format to BCD. Zoned format uses a byte to represent a digit where the most significant nibble is 0x3 or 0xf, depending on the preferred signal. Signed-off-by: Jose Ricardo Ziviani Signed-off-by: David Gibson

target-ppc: Implement bcdctn. instruction

2016-11-14T23:06:48+00:00

bcdctn. converts from BCD to National numeric format. National format uses a byte to represent a digit where the most significant nibble is always 0x3 and the least sign. nibbles is the digit itself. Signed-off-by: Jose Ricardo Ziviani Signed-off-by: David Gibson

target-ppc: Implement bcdcfn. instruction

2016-11-14T23:06:48+00:00

bcdcfn. converts from National numeric format to BCD. National format uses a byte to represent a digit where the most significant nibble is always 0x3 and the least sign. nibbles is the digit itself. Signed-off-by: Jose Ricardo Ziviani Reviewed-by: David Gibson Signed-off-by: David Gibson