Instead of accessing the cpu address space, use an address space
configured by the caller.

Eventually all dma functionality will be folded into AddressSpace,
but we have to start from something.
Reviewed-by: NAnthony Liguori <aliguori@us.ibm.com>
Signed-off-by: NAvi Kivity <avi@redhat.com>

Currently we use a global radix tree to dispatch memory access.  This only
works with a single address space; to support multiple address spaces we
make the radix tree a member of AddressSpace (via an intermediate structure
AddressSpaceDispatch to avoid exposing too many internals).

A side effect is that address_space_io also gains a dispatch table.  When
we remove all the pre-memory-API I/O registrations, we can use that for
dispatching I/O and get rid of the original I/O dispatch.
Signed-off-by: NAvi Kivity <avi@redhat.com>

use cpu_physical_memory_is_io() instead.
Signed-off-by: NAvi Kivity <avi@redhat.com>

Using the AddressSpace type reduces confusion, as you can't accidentally
supply the MemoryRegion you're interested in.
Reviewed-by: NAnthony Liguori <aliguori@us.ibm.com>
Signed-off-by: NAvi Kivity <avi@redhat.com>

We plan to make the core listener listen to all address spaces; this
will cause many more flushes than necessary.  Prepare for that by
moving the flush into a tcg-specific listener.

Later we can avoid registering the listener if tcg is disabled.
Signed-off-by: NAvi Kivity <avi@redhat.com>

With this change, memory.c no longer knows anything about special address
spaces, so it is prepared for AddressSpace based DMA.
Reviewed-by: NAnthony Liguori <aliguori@us.ibm.com>
Signed-off-by: NAvi Kivity <avi@redhat.com>

Instead of calling a global function on coalesced mmio changes, which
routes the call to kvm if enabled, add coalesced mmio hooks to
MemoryListener and make kvm use that instead.

The motivation is support for multiple address spaces (which means we
we need to filter the call on the right address space) but the result
is cleaner as well.
Signed-off-by: NAvi Kivity <avi@redhat.com>

Removes quite a bit of useless code.
Signed-off-by: NAvi Kivity <avi@redhat.com>

Removes quite a bit of useless code.
Signed-off-by: NAvi Kivity <avi@redhat.com>

Removes quite a bit of useless code.
Signed-off-by: NAvi Kivity <avi@redhat.com>

Removes quite a bit of useless code.
Signed-off-by: NAvi Kivity <avi@redhat.com>

Removes quite a bit of useless code.
Signed-off-by: NAvi Kivity <avi@redhat.com>

Many listeners don't need to respond to all MemoryListener callbacks;
provide suitable no-op defaults instead.
Signed-off-by: NAvi Kivity <avi@redhat.com>

Instead of embedding knowledge of the memory and I/O address spaces in the
memory core, maintain a list of all address spaces.  This list will later
be extended dynamically for other bus masters.
Reviewed-by: NAnthony Liguori <aliguori@us.ibm.com>
Signed-off-by: NAvi Kivity <avi@redhat.com>

The DMA API will use an AddressSpace to differentiate among different
initiators.
Reviewed-by: NAnthony Liguori <aliguori@us.ibm.com>
Signed-off-by: NAvi Kivity <avi@redhat.com>

AddressSpace contains a member, current_map, of type FlatView.  Since we
want to limit the leakage of internal types to public headers, switch to
a pointer to a FlatView.  There is no performance impact as this isn't used
during lookups, only address space reconfigurations.
Reviewed-by: NAnthony Liguori <aliguori@us.ibm.com>
Signed-off-by: NAvi Kivity <avi@redhat.com>

Using an unfiltered memory listener will cause regions to be reported
fails multiple times if we have more than two address spaces.  Use a separate
listener for memory and I/O, and utilize MemoryListener's address space
filtering to fix this.
Signed-off-by: NAvi Kivity <avi@redhat.com>

The construct

   if (address_space == get_system_memory()) {
       // memory thing
   } else {
       // io thing
   }

fails if we have more than two address spaces.  Use a separate listener
for memory and I/O, and utilize MemoryListener's address space filtering to
fix this.
Signed-off-by: NAvi Kivity <avi@redhat.com>

Instead of checking manually, let the listener filter for us.  This prepares
us for DMA address spaces.
Signed-off-by: NAvi Kivity <avi@redhat.com>

exec-obsolete.h used to hold pre-memory-API functions that were used from
device code prior to the transition to the memory API.  Now that the
transition is complete, the name no longer describes the file.  The
functions still need to be merged better into the memory core, but there's
no danger of anyone using them.
Reviewed-by: NAnthony Liguori <aliguori@us.ibm.com>
Signed-off-by: NAvi Kivity <avi@redhat.com>

Thanks to Andriy Gapon for initial problem report.
Signed-off-by: Nmalc <av1474@comtv.ru>

Needed for moving halted field to CPUState.
Signed-off-by: NAndreas Färber <afaerber@suse.de>
Signed-off-by: NBlue Swirl <blauwirbel@gmail.com>

Needed for changing qemu_cpu_kick() argument type to CPUState.
Signed-off-by: NAndreas Färber <afaerber@suse.de>
Signed-off-by: NBlue Swirl <blauwirbel@gmail.com>

Needed for changing cpu_kick_irq() argument type to SPARCCPU.
Signed-off-by: NAndreas Färber <afaerber@suse.de>
Signed-off-by: NBlue Swirl <blauwirbel@gmail.com>

Needed for changing qemu_cpu_kick() argument type to CPUState.
Signed-off-by: NAndreas Färber <afaerber@suse.de>
Signed-off-by: NBlue Swirl <blauwirbel@gmail.com>

Needed for changing cpu_kick_irq() argument type to SPARCCPU.
Signed-off-by: NAndreas Färber <afaerber@suse.de>
Signed-off-by: NBlue Swirl <blauwirbel@gmail.com>

Signed-off-by: NRichard Henderson <rth@twiddle.net>
Signed-off-by: NBlue Swirl <blauwirbel@gmail.com>

Signed-off-by: NRichard Henderson <rth@twiddle.net>
Signed-off-by: NBlue Swirl <blauwirbel@gmail.com>

Signed-off-by: NRichard Henderson <rth@twiddle.net>
Signed-off-by: NBlue Swirl <blauwirbel@gmail.com>

Now that we're always sparcv9, we can not bother using Bicc for
32-bit branches and BPcc for 64-bit branches and instead always
use BPcc.

New interfaces allow less direct use of tcg_out32 and raw numbers
inside the qemu_ld/st routines.
Signed-off-by: NRichard Henderson <rth@twiddle.net>
Signed-off-by: NBlue Swirl <blauwirbel@gmail.com>

Signed-off-by: NRichard Henderson <rth@twiddle.net>
Signed-off-by: NBlue Swirl <blauwirbel@gmail.com>

Signed-off-by: NRichard Henderson <rth@twiddle.net>
Signed-off-by: NBlue Swirl <blauwirbel@gmail.com>

We must care not to clobber the high parts before we consume them.
Signed-off-by: NRichard Henderson <rth@twiddle.net>
Signed-off-by: NBlue Swirl <blauwirbel@gmail.com>

The set of comparisons that can immediately use the carry are LTU/GEU,
not LTU/LEU.  Don't swap operands when we need a temp register; the
register may already be in use from setcond2.
Signed-off-by: NRichard Henderson <rth@twiddle.net>
Signed-off-by: NBlue Swirl <blauwirbel@gmail.com>

The datalo variable is still live in the miss path.  Use another
when reconstructing the full data value.
Signed-off-by: NRichard Henderson <rth@twiddle.net>
Signed-off-by: NBlue Swirl <blauwirbel@gmail.com>

Like brcond2, use tcg_high_cond.  Use movcc instead of branches.
Signed-off-by: NRichard Henderson <rth@twiddle.net>
Signed-off-by: NBlue Swirl <blauwirbel@gmail.com>

Signed-off-by: NRichard Henderson <rth@twiddle.net>
Signed-off-by: NBlue Swirl <blauwirbel@gmail.com>

Much the same problem as recently fixed for hppa.
Signed-off-by: NRichard Henderson <rth@twiddle.net>
Signed-off-by: NBlue Swirl <blauwirbel@gmail.com>

Avoid speculatively computing flags before every potentially trapping
operation and instead do the flags computation when a trap actually
occurs.  This gives approximately 30% speedup in emulation.
Signed-off-by: NRichard Henderson <rth@twiddle.net>
Signed-off-by: NBlue Swirl <blauwirbel@gmail.com>

Now that save_state never ends a BB, we don't need to copy
values into local temps around it.
Signed-off-by: NRichard Henderson <rth@twiddle.net>
Signed-off-by: NBlue Swirl <blauwirbel@gmail.com>