Issue the tlb load as early as possible and perform the address
masking while the load is completing.
Signed-off-by: Richard Henderson <rth@twiddle.net>
Signed-off-by: Aurelien Jarno <aurelien@aurel32.net>
Along the tlb hit path, we were modifying the variables holding the input
register numbers, which lead to incorrect expansion of the tlb miss path.
Fix this by extracting the tlb hit path to separate functions with their
own local variables. This also makes the difference between softmmu and
user-only easier to read.
Signed-off-by: Richard Henderson <rth@twiddle.net>
Signed-off-by: Aurelien Jarno <aurelien@aurel32.net>
Load from the guest_base variable rather than embed a constant.
Always reserve TCG_GUEST_BASE_REG if guest base support enabled.
Signed-off-by: Richard Henderson <rth@twiddle.net>
Signed-off-by: Aurelien Jarno <aurelien@aurel32.net>
Define "M" constraint for and_mask_p and "O" constraint for or_mask_p.
Assume that inputs are correct in tcg_out_ori and tcg_out_andi.
Signed-off-by: Richard Henderson <rth@twiddle.net>
Signed-off-by: Aurelien Jarno <aurelien@aurel32.net>
Check TARGET_ABI_BITS, not TARGET_LONG_BITS, when deciding
whether or not the guest needs special 64-bit stat translation.
Signed-off-by: Richard Henderson <rth@twiddle.net>
Signed-off-by: Blue Swirl <blauwirbel@gmail.com>
Single-stepping was not properly updating npc, resulting in some
instructions being executed twice. In addition, we were emitting
dead code at the end of the TB.
Fix both by teaching gen_goto_tb to avoid goto_tb for single-step
and removing the special-case code in gen_intermediate_code_internal.
Signed-off-by: Richard Henderson <rth@twiddle.net>
Signed-off-by: Blue Swirl <blauwirbel@gmail.com>
Fix clang warnings:
/src/qemu/block/vvfat.c:1102:9: warning: Value stored to 'index3' during its initialization is never read
int index3=index1+1;
/src/qemu/cmd.c:290:15: warning: Value stored to 'p' during its initialization is never read
char *p = result;
Signed-off-by: Blue Swirl <blauwirbel@gmail.com>
Greatly simplify the subpage implementation by not supporting
multiple devices at the same address at different widths. We
don't need full copies of mem_read/mem_write/opaque for each
address, only a single index back into the main io_mem_* arrays.
Signed-off-by: Richard Henderson <rth@twiddle.net>
Signed-off-by: Blue Swirl <blauwirbel@gmail.com>
The ABI-specific types used by linux_binprm and image_info
are different after forcing TARGET_ABI32 on. Which means
that the parameters that load_elf_binary_multi sees are not
those that loader_exec passed. This is inherently broken
and is more trouble than it's worth fixing.
Signed-off-by: Richard Henderson <rth@twiddle.net>
Signed-off-by: Blue Swirl <blauwirbel@gmail.com>
GCC 3.3.5 generates warnings for static forward declarations of data, so
rearrange code to use static forward declarations of functions instead.
Signed-off-by: Blue Swirl <blauwirbel@gmail.com>
Fix clang error:
CC m68k-softmmu/helper.o
/src/qemu/target-m68k/helper.c:773:33: error: if statement has empty body [-Wempty-body]
else if (val & (1ull << 47));
Signed-off-by: Blue Swirl <blauwirbel@gmail.com>
This clang error is harmless but worth fixing:
CC libhw32/rc4030.o
/src/qemu/hw/rc4030.c:244:66: error: if statement has empty body [-Wempty-body]
DPRINTF("read 0x%02x at " TARGET_FMT_plx "\n", val, addr);
Signed-off-by: Blue Swirl <blauwirbel@gmail.com>
Use address_mask on both addr and addr+8 in both these routines,
rather than explicit masking with 0xffffffff.
Reformulate address_mask to return a result, rather than masking
a pass-by-reference argument.
Signed-off-by: Richard Henderson <rth@twiddle.net>
Signed-off-by: Blue Swirl <blauwirbel@gmail.com>
A new iovec array is allocated when creating a merged write request.
This patch ensures that the iovec array is deleted in addition to its
qiov owner.
Reported-by: Leszek Urbanski <tygrys@moo.pl>
Signed-off-by: Stefan Hajnoczi <stefanha@linux.vnet.ibm.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
It should be BDRV_O_FLAGS instead of BRDV_O_FLAGS.
Signed-off-by: Stefan Hajnoczi <stefanha@linux.vnet.ibm.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
Several commands have code to create a BlockDriverState and open a file.
The bdrv_new_open() function can be used to perform these steps. This
patch converts the qemu-img commands to actually use bdrv_new_open().
Replaced the bdrv_new_open() 'readonly' argument with bdrv_open()-style
flags to support generic flags like BDRV_O_NO_BACKING.
Signed-off-by: Stefan Hajnoczi <stefanha@linux.vnet.ibm.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
The bdrv_set_geometry_hint call below is not needed - it's just setting
what was just read.
Signed-off-by: Bruce Rogers <brogers@novell.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
The bdrv_first linked list of BlockDriverStates is currently extern so
that block migration can iterate the list. However, since there is
already a bdrv_iterate() function there is no need to expose bdrv_first.
Signed-off-by: Stefan Hajnoczi <stefanha@linux.vnet.ibm.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
Assign directly to the bdrv_flags variable instead of using
magic numbers before translating to the BDRV_O_* options.
Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
Returning NULL on error doesn't allow distinguishing between different errors.
Change the interface to return an integer for -errno.
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
Split up the raw_getlength into separate generic, solaris and BSD
versions to reduce the ifdef maze a bit. The BSD variant still
is a complete maze, but to clean it up properly we'd need some
people using the BSD variants to figure out what code is used
for what variant.
Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
BDRV_O_FILE is only used to communicate between bdrv_file_open and bdrv_open.
It affects two things: first bdrv_open only searches for protocols using
find_protocol instead of all image formats and host drivers. We can easily
move that to the caller and pass the found driver to bdrv_open. Second
it is used to not force a read-write open of a snapshot file. But we never
use bdrv_file_open to open snapshots and this behaviour doesn't make sense
to start with.
qemu-io abused the BDRV_O_FILE for it's growable option, switch it to
using bdrv_file_open to make sure we only open files as growable were
we can actually support that.
This patch requires Kevin's "[PATCH] Replace calls of old bdrv_open" to
be applied first.
Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
What is known today as bdrv_open2 becomes the new bdrv_open. All remaining
callers of the old function are converted to the new one. In some places they
even know the right format, so they should have used bdrv_open2 from the
beginning.
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
qcow_create2 assumes that the new image will only need one cluster for its
refcount table initially. Obviously that's not true any more when the image is
big enough (exact value depends on the cluster size).
This patch calculates the refcount table size dynamically.
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
