sdk/emulator/qemu.git
13 years agotarget-arm: Refactor translation of exception generating instructions
Peter Maydell [Fri, 14 Jan 2011 19:39:19 +0000 (20:39 +0100)]
target-arm: Refactor translation of exception generating instructions

Create a new function which does the common sequence of gen_set_condexec,
gen_set_pc_im, gen_exception, set is_jmp to DISAS_JUMP.

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Aurelien Jarno <aurelien@aurel32.net>
Signed-off-by: Aurelien Jarno <aurelien@aurel32.net>
13 years agotarget-arm: Remove redundant setting of IT bits before Thumb SWI
Peter Maydell [Fri, 14 Jan 2011 19:39:19 +0000 (20:39 +0100)]
target-arm: Remove redundant setting of IT bits before Thumb SWI

Remove a redundant call to gen_set_condexec() in the translation of Thumb
mode SWI. (SWI and WFI generate "exceptions" which happen after the
execution of the instruction, ie when PC and IT bits have updated.
So the condexec bits at this point are not correct. However, the code
that handles finishing the translation of the TB will write the correct
value of the condexec bits later, so the only effect was that a conditional
Thumb SWI would generate slightly worse code than necessary.)

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Aurelien Jarno <aurelien@aurel32.net>
Signed-off-by: Aurelien Jarno <aurelien@aurel32.net>
13 years agotarget-arm: Translate with user-state from TB flags, not CPUState
Peter Maydell [Fri, 14 Jan 2011 19:39:19 +0000 (20:39 +0100)]
target-arm: Translate with user-state from TB flags, not CPUState

When translating, get the user/priv state from the TB flags, not
the CPUState.

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Aurelien Jarno <aurelien@aurel32.net>
Signed-off-by: Aurelien Jarno <aurelien@aurel32.net>
13 years agotarget-arm: Set privileged bit in TB flags correctly for M profile
Peter Maydell [Fri, 14 Jan 2011 19:39:19 +0000 (20:39 +0100)]
target-arm: Set privileged bit in TB flags correctly for M profile

M profile ARM cores don't have a CPSR mode field. Set the bit in the
TB flags that indicates non-user mode correctly for these cores.

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Aurelien Jarno <aurelien@aurel32.net>
Signed-off-by: Aurelien Jarno <aurelien@aurel32.net>
13 years agotarget-arm: Translate with condexec bits from TB flags, not CPUState
Peter Maydell [Fri, 14 Jan 2011 19:39:19 +0000 (20:39 +0100)]
target-arm: Translate with condexec bits from TB flags, not CPUState

When translating, the condexec bits for the TB are in the TB flags;
the CPUState condexec bits may be different.

This patch fixes https://bugs.launchpad.net/bugs/604872 where we might
segfault if we took an exception in the middle of a TB with an IT
block, because when we came to retranslate in cpu_restore_state()
the CPUState condexec bits would have advanced compared to the start
of the TB and we would generate different (wrong) code.

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Aurelien Jarno <aurelien@aurel32.net>
Signed-off-by: Aurelien Jarno <aurelien@aurel32.net>
13 years agotarget-arm: Translate with Thumb state from TB flags, not CPUState
Peter Maydell [Fri, 14 Jan 2011 19:39:19 +0000 (20:39 +0100)]
target-arm: Translate with Thumb state from TB flags, not CPUState

The Thumb/ARM state for the TB being translated should come from
the TB flags, not the CPUState.

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Aurelien Jarno <aurelien@aurel32.net>
Signed-off-by: Aurelien Jarno <aurelien@aurel32.net>
13 years agotarget-arm: Translate with VFP len/stride from TB flags, not CPUState
Peter Maydell [Fri, 14 Jan 2011 19:39:19 +0000 (20:39 +0100)]
target-arm: Translate with VFP len/stride from TB flags, not CPUState

When translating, the VFP vector length and stride for this TB are encoded
in the TB flags; the CPUState copies may be different and must not be used.

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Aurelien Jarno <aurelien@aurel32.net>
Signed-off-by: Aurelien Jarno <aurelien@aurel32.net>
13 years agotarget-arm: Translate with VFP-enabled from TB flags, not CPUState
Peter Maydell [Fri, 14 Jan 2011 19:39:19 +0000 (20:39 +0100)]
target-arm: Translate with VFP-enabled from TB flags, not CPUState

When translating code, whether the VFP unit is enabled for this TB
is stored in a bit in the TB flags. Use this rather than incorrectly
reading the FPEXC from the CPUState passed to translation.

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Aurelien Jarno <aurelien@aurel32.net>
Signed-off-by: Aurelien Jarno <aurelien@aurel32.net>
13 years agotarget-arm: Add symbolic constants for bitfields in TB flags
Peter Maydell [Fri, 14 Jan 2011 19:39:18 +0000 (20:39 +0100)]
target-arm: Add symbolic constants for bitfields in TB flags

Add symbolic constants for the bitfields we use in the TB flags.

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Aurelien Jarno <aurelien@aurel32.net>
Signed-off-by: Aurelien Jarno <aurelien@aurel32.net>
13 years agotarget-arm: Don't generate code specific to current CPU mode for SRS
Peter Maydell [Fri, 14 Jan 2011 19:39:18 +0000 (20:39 +0100)]
target-arm: Don't generate code specific to current CPU mode for SRS

When translating the SRS instruction, handle the "store registers
to stack of current mode" case in the helper function rather than
inline. This means the generated code does not make assumptions
about the current CPU mode which might not be valid when the TB
is executed later.

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Aurelien Jarno <aurelien@aurel32.net>
Signed-off-by: Aurelien Jarno <aurelien@aurel32.net>
13 years agotarget-arm: Use the standard FPSCR value for VRSQRTS
Peter Maydell [Fri, 14 Jan 2011 19:39:18 +0000 (20:39 +0100)]
target-arm: Use the standard FPSCR value for VRSQRTS

VSQRTS always uses the standard FPSCR value as it is a Neon instruction.

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Aurelien Jarno <aurelien@aurel32.net>
Signed-off-by: Aurelien Jarno <aurelien@aurel32.net>
13 years agotarget-arm: Add support for 'Standard FPSCR Value' as used by Neon
Peter Maydell [Fri, 14 Jan 2011 19:39:18 +0000 (20:39 +0100)]
target-arm: Add support for 'Standard FPSCR Value' as used by Neon

Add support to the ARM helper routines for a second fp_status value
which should be used for operations which the ARM ARM indicates use
"ARM standard floating-point arithmetic" rather than being controlled
by the rounding/flush/NaN settings in the FPSCR.

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Aurelien Jarno <aurelien@aurel32.net>
Signed-off-by: Aurelien Jarno <aurelien@aurel32.net>
13 years agotarget-arm: Fix implementation of VRSQRTS
Peter Maydell [Fri, 14 Jan 2011 19:39:18 +0000 (20:39 +0100)]
target-arm: Fix implementation of VRSQRTS

The implementation of the ARM VRSQRTS instruction (which calculates
(3 - op1 * op2) / 2) was missing the division operation. It also
did not handle the special cases of (0,inf) and (inf,0).

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Aurelien Jarno <aurelien@aurel32.net>
Signed-off-by: Aurelien Jarno <aurelien@aurel32.net>
13 years agosoftfloat: Add float32_is_zero_or_denormal() function
Peter Maydell [Fri, 14 Jan 2011 19:39:18 +0000 (20:39 +0100)]
softfloat: Add float32_is_zero_or_denormal() function

Add a utility function to softfloat to test whether a float32
is zero or denormal.

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Aurelien Jarno <aurelien@aurel32.net>
Signed-off-by: Aurelien Jarno <aurelien@aurel32.net>
13 years agolsi53c895a: fix endianness issues
Aurelien Jarno [Fri, 14 Jan 2011 19:39:18 +0000 (20:39 +0100)]
lsi53c895a: fix endianness issues

lsi_ram_read*() and lsi_ram_write*() are not consistent, one uses
leXX_to_cpu() the other uses nothing. As the comment above the RAM
declaration says: "Script ram is stored as 32-bit words in host
byteorder.", remove the leXX_to_cpu() calls.

This fixes the boot of an ARM versatile machine on MIPS and PowerPC
hosts.

Signed-off-by: Aurelien Jarno <aurelien@aurel32.net>
13 years agomips/malta: fix board id
Aurelien Jarno [Fri, 14 Jan 2011 19:39:18 +0000 (20:39 +0100)]
mips/malta: fix board id

Board id can't be written with stl_phys() as it's read-only part of
memory. Use stl_p() on the memory buffer instead.

Signed-off-by: Aurelien Jarno <aurelien@aurel32.net>
13 years agotarget-sh4: use setcond when possible
Aurelien Jarno [Fri, 14 Jan 2011 19:39:18 +0000 (20:39 +0100)]
target-sh4: use setcond when possible

Signed-off-by: Aurelien Jarno <aurelien@aurel32.net>
13 years agotarget-sh4: log instructions start in TCG code
Aurelien Jarno [Fri, 14 Jan 2011 19:39:18 +0000 (20:39 +0100)]
target-sh4: log instructions start in TCG code

Signed-off-by: Aurelien Jarno <aurelien@aurel32.net>
13 years agotarget-sh4: simplify comparisons after a 'and' op
Aurelien Jarno [Fri, 14 Jan 2011 19:39:18 +0000 (20:39 +0100)]
target-sh4: simplify comparisons after a 'and' op

When a TCG variable is anded with a value and the compared with the same
value, we can simply invert the comparison and compare it with 0. The
generated code is smaller.

Signed-off-by: Aurelien Jarno <aurelien@aurel32.net>
13 years agotarget-sh4: fix reset on r2d
Aurelien Jarno [Fri, 14 Jan 2011 19:39:18 +0000 (20:39 +0100)]
target-sh4: fix reset on r2d

Signed-off-by: Aurelien Jarno <aurelien@aurel32.net>
13 years agotarget-sh4: optimize exceptions
Aurelien Jarno [Fri, 14 Jan 2011 19:39:18 +0000 (20:39 +0100)]
target-sh4: optimize exceptions

As exception is not the normal path, don't bother saving PC, before
raising one, instead rely on code retranslation to get the CPU state.

Signed-off-by: Aurelien Jarno <aurelien@aurel32.net>
13 years agotarget-sh4: add ftrv instruction
Aurelien Jarno [Fri, 14 Jan 2011 19:39:18 +0000 (20:39 +0100)]
target-sh4: add ftrv instruction

Add the ftrv XMTRX,FVn instruction, which computes the 4-row x 4-column
matrix XMTRX by the 4-dimensional vector FVn.

Signed-off-by: Aurelien Jarno <aurelien@aurel32.net>
13 years agotarget-sh4: add fipr instruction
Aurelien Jarno [Fri, 14 Jan 2011 19:39:18 +0000 (20:39 +0100)]
target-sh4: add fipr instruction

Add the fipr FVm,FVn instruction, which computes the inner products of
a 4-dimensional single precision floating-point vector.

Signed-off-by: Aurelien Jarno <aurelien@aurel32.net>
13 years agotarget-sh4: implement FPU exceptions
Aurelien Jarno [Fri, 14 Jan 2011 19:39:18 +0000 (20:39 +0100)]
target-sh4: implement FPU exceptions

FPU exception support where not implemented on SH4. Implement them by
clearing the softfloat exceptions flags before an FP instruction (the
SH4 FPU also clear them before an instruction), and calling a function
to update the FPSCR register after an FP instruction. This function
update the corresponding FPSCR bits (both flags and cumulative flags)
and trigger exception if enabled.

Signed-off-by: Aurelien Jarno <aurelien@aurel32.net>
13 years agotarget-sh4: implement flush-to-zero
Aurelien Jarno [Fri, 14 Jan 2011 19:39:18 +0000 (20:39 +0100)]
target-sh4: implement flush-to-zero

When the FPSCR.DN bit is set, the SH4 FPU treat denormalized numbers as
zero. Enable the corresponding softfloat option when this bit is set.

Signed-off-by: Aurelien Jarno <aurelien@aurel32.net>
13 years agotarget-sh4: define FPSCR constants
Aurelien Jarno [Fri, 14 Jan 2011 19:39:18 +0000 (20:39 +0100)]
target-sh4: define FPSCR constants

Define FPSCR constants for all field and use them instead of hardcoded
values.

Signed-off-by: Aurelien Jarno <aurelien@aurel32.net>
13 years agotarget-sh4: use default-NaN mode
Aurelien Jarno [Fri, 14 Jan 2011 19:39:17 +0000 (20:39 +0100)]
target-sh4: use default-NaN mode

SH4 FPU doesn't propagate NaN, and instead always regenerate new ones.
Enable the default-NaN mode by default.

Signed-off-by: Aurelien Jarno <aurelien@aurel32.net>
13 years agosoftfloat: fix default-NaN mode
Aurelien Jarno [Fri, 14 Jan 2011 19:39:17 +0000 (20:39 +0100)]
softfloat: fix default-NaN mode

When the default-NaN mode is enabled, it should return the default NaN
value, but it should anyway raise the invalid operation flag if one of
the operand is an sNaN.

I have checked that this behavior matches the ARM and SH4 manuals, as
well as real SH4 hardware.

Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Aurelien Jarno <aurelien@aurel32.net>
13 years agosoftfloat: SH4 has the sNaN bit set
Aurelien Jarno [Fri, 14 Jan 2011 19:39:17 +0000 (20:39 +0100)]
softfloat: SH4 has the sNaN bit set

Signed-off-by: Aurelien Jarno <aurelien@aurel32.net>
13 years agotarget-sh4: switch sh4 to softfloat
Aurelien Jarno [Fri, 14 Jan 2011 19:39:17 +0000 (20:39 +0100)]
target-sh4: switch sh4 to softfloat

We need to be able to catch exceptions correctly and thus enable softfloat
on SH4.

As all machines except i386 and x86_64 are using softfloat, make it the
default and change the case to detect i386 and x86_64. Note that CRIS
doesn't have an FPU, so it can be configured with both softfloat-native
and softfloat.

Signed-off-by: Aurelien Jarno <aurelien@aurel32.net>
13 years agoconfigure: fix broken test
Aurelien Jarno [Fri, 14 Jan 2011 19:21:22 +0000 (20:21 +0100)]
configure: fix broken test

Since commit d1807a4f836c27f6dc7061e53a834dd27f78e46a ./configure tries
to test files and directories with "test -f", which only test for regular
files. Test with "test -e", which looks for any kind of files.

This unbreak the configure script when not using a separate object
directory.

Signed-off-by: Aurelien Jarno <aurelien@aurel32.net>
13 years agomake trace options use autoconfy names
Paolo Bonzini [Thu, 23 Dec 2010 10:44:02 +0000 (11:44 +0100)]
make trace options use autoconfy names

These are not in any release, so I am just renaming them.

Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Blue Swirl <blauwirbel@gmail.com>
13 years agomove --srcdir detection earlier
Paolo Bonzini [Thu, 23 Dec 2010 10:44:00 +0000 (11:44 +0100)]
move --srcdir detection earlier

This will help getting config.guess and config.sub from the srcdir.

Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Blue Swirl <blauwirbel@gmail.com>
13 years ago [PATCH v3 14/15] remove HOST_CC mention from roms/{sea, vga}bios/config.mak
Paolo Bonzini [Thu, 23 Dec 2010 10:44:01 +0000 (11:44 +0100)]
 [PATCH v3 14/15] remove HOST_CC mention from roms/{sea, vga}bios/config.mak

Not used in the submodules.

Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Blue Swirl <blauwirbel@gmail.com>
13 years agoremove source_path_used
Paolo Bonzini [Thu, 23 Dec 2010 10:43:59 +0000 (11:43 +0100)]
remove source_path_used

Not necessary since we use mkdir -p and from this patch test -f.

Also, dirname returns "." if a path has no directory component,
as is the case for "sh configure".

Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Blue Swirl <blauwirbel@gmail.com>
13 years agomove "ln -sf" emulation to a function
Paolo Bonzini [Thu, 23 Dec 2010 10:43:58 +0000 (11:43 +0100)]
move "ln -sf" emulation to a function

"ln -sf" does not really do anything more than "ln -s" on Solaris.

Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Blue Swirl <blauwirbel@gmail.com>
13 years agoreorganize sdl-config tests
Paolo Bonzini [Thu, 23 Dec 2010 10:43:57 +0000 (11:43 +0100)]
reorganize sdl-config tests

This also allows overriding it with SDL_CONFIG, and warning in suspicious
cross-compilation scenarios.

Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Blue Swirl <blauwirbel@gmail.com>
13 years agodo not default to non-prefixed pkg-config when cross compiling
Paolo Bonzini [Thu, 23 Dec 2010 10:43:56 +0000 (11:43 +0100)]
do not default to non-prefixed pkg-config when cross compiling

This can still be requested with PKG_CONFIG=/path/to/pkg-config.
Just do not use it as a default, and print a warning.

Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Blue Swirl <blauwirbel@gmail.com>
13 years agofix spelling of $pkg_config, move default together with other cross tools
Paolo Bonzini [Thu, 23 Dec 2010 10:43:55 +0000 (11:43 +0100)]
fix spelling of $pkg_config, move default together with other cross tools

Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Blue Swirl <blauwirbel@gmail.com>
13 years agoprovide portable HOST_LONG_BITS test
Paolo Bonzini [Thu, 23 Dec 2010 10:43:54 +0000 (11:43 +0100)]
provide portable HOST_LONG_BITS test

Do not hardcode the list of 64-bit CPUs.  Use sizeof(void *) to
compute it.  Renaming it to HOST_LONG_BITS to HOST_POINTER_BITS
is left for later.

Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Blue Swirl <blauwirbel@gmail.com>
13 years agodo not pass bogus $(SRC_PATH) include paths to cc during configure
Paolo Bonzini [Thu, 23 Dec 2010 10:43:53 +0000 (11:43 +0100)]
do not pass bogus $(SRC_PATH) include paths to cc during configure

Non-existent -I paths are dropped silently by the compiler, but still
it is not polite to pass bogus options.  Configure-time tests do not
need any include files from the source path, so only include -I flags
at make time (when they're properly expanded).

Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Blue Swirl <blauwirbel@gmail.com>
13 years agotest cc with the complete set of chosen flags
Paolo Bonzini [Thu, 23 Dec 2010 10:43:52 +0000 (11:43 +0100)]
test cc with the complete set of chosen flags

The "test the C compiler works ok" comes before a bunch of flags
are added for --cpu or just depending on the host.  It helps
debugging if the test is done after these flags are (unconditionally)
added.

Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Blue Swirl <blauwirbel@gmail.com>
13 years agofix sparse support (?)
Paolo Bonzini [Thu, 23 Dec 2010 10:43:51 +0000 (11:43 +0100)]
fix sparse support (?)

I didn't test with sparse, but the old code using += before a variable
was set was wrong.  Sparse support should probably be ripped out or
redone, but this at least keeps some sanity.

Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Blue Swirl <blauwirbel@gmail.com>
13 years agomove feature variables to the top
Paolo Bonzini [Thu, 23 Dec 2010 10:43:50 +0000 (11:43 +0100)]
move feature variables to the top

Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Blue Swirl <blauwirbel@gmail.com>
13 years agodefault make and install to environment variables
Paolo Bonzini [Thu, 23 Dec 2010 10:43:49 +0000 (11:43 +0100)]
default make and install to environment variables

Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Blue Swirl <blauwirbel@gmail.com>
13 years agodefault compilation tools to environment variables
Paolo Bonzini [Thu, 23 Dec 2010 10:43:48 +0000 (11:43 +0100)]
default compilation tools to environment variables

Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Blue Swirl <blauwirbel@gmail.com>
13 years agomicroblaze: Improve unconditional direct branching
Edgar E. Iglesias [Fri, 14 Jan 2011 11:30:26 +0000 (12:30 +0100)]
microblaze: Improve unconditional direct branching

Avoid emitting conditional tcg operations for uncoditional
direct branches.

Signed-off-by: Edgar E. Iglesias <edgar.iglesias@petalogix.com>
13 years agocris: Set btaken when storing direct jumps
Edgar E. Iglesias [Thu, 13 Jan 2011 14:14:04 +0000 (15:14 +0100)]
cris: Set btaken when storing direct jumps

When storing a direct jmp from translation state into
runtime state we should set the btaken flag.

Signed-off-by: Edgar E. Iglesias <edgar@axis.com>
13 years agoslirp: Use strcasecmp() to check tftp mode, tsize
Sergei Gavrikov [Wed, 12 Jan 2011 13:57:18 +0000 (15:57 +0200)]
slirp: Use strcasecmp() to check tftp mode, tsize

According to RFC 1350 (TFTP Revision 2) the mode field can contain any
combination of upper and lower case; also RFC 2349 propagates that the
transfer size option ("tsize") is case in-sensitive too.

Current implementation of embedded TFTP server missed that what does
mess some TFTP clients. Fixed by using STRCASECMP(3) in the required
places.

Signed-off-by: Sergei Gavrikov <sergei.gavrikov@gmail.com>
Reviewed-by: Stefan Hajnoczi <stefanha@linux.vnet.ibm.com>
Signed-off-by: Edgar E. Iglesias <edgar@axis.com>
13 years agoppc405_uc: fix a buffer overflow
Blue Swirl [Wed, 12 Jan 2011 21:12:31 +0000 (21:12 +0000)]
ppc405_uc: fix a buffer overflow

Fix a buffer overflow, reported by cppcheck:
[/src/qemu/hw/ppc405_uc.c:72]: (error) Buffer access out-of-bounds: bd.bi_s_version

The use of field bi_s_version seems to be a typo, it should be
bi_r_version.

Signed-off-by: Blue Swirl <blauwirbel@gmail.com>
13 years agolan9118: fix a buffer overflow
Blue Swirl [Wed, 12 Jan 2011 21:00:01 +0000 (21:00 +0000)]
lan9118: fix a buffer overflow

Fix a buffer overflow, reported by cppcheck:
[/src/qemu/hw/lan9118.c:849]: (error) Buffer access out-of-bounds: s.eeprom

All eeprom handling code assumes that the size of eeprom is 128,
except lan9118_eeprom_cmd. Fix this by restricting the address passed.

Signed-off-by: Blue Swirl <blauwirbel@gmail.com>
13 years agovpc: fix a file descriptor leak
Blue Swirl [Wed, 12 Jan 2011 19:49:00 +0000 (19:49 +0000)]
vpc: fix a file descriptor leak

Fix a file descriptor leak, reported by cppcheck:
[/src/qemu/block/vpc.c:524]: (error) Resource leak: fd

Signed-off-by: Blue Swirl <blauwirbel@gmail.com>
13 years agoqemu-io: fix a memory leak
Blue Swirl [Wed, 12 Jan 2011 19:48:59 +0000 (19:48 +0000)]
qemu-io: fix a memory leak

Fix a memory leak, reported by cppcheck:
[/src/qemu/qemu-io.c:1135]: (error) Memory leak: ctx

Signed-off-by: Blue Swirl <blauwirbel@gmail.com>
13 years agovvfat: fix a file descriptor leak
Blue Swirl [Wed, 12 Jan 2011 19:48:58 +0000 (19:48 +0000)]
vvfat: fix a file descriptor leak

Fix a file descriptor leak, reported by cppcheck:
[/src/qemu/block/vvfat.c:759]: (error) Resource leak: dir

Signed-off-by: Blue Swirl <blauwirbel@gmail.com>
13 years agoloader: fix a file descriptor leak
Blue Swirl [Wed, 12 Jan 2011 19:48:57 +0000 (19:48 +0000)]
loader: fix a file descriptor leak

Fix a file descriptor leak, reported by cppcheck:
[/src/qemu/hw/loader.c:311]: (error) Resource leak: fd

Signed-off-by: Blue Swirl <blauwirbel@gmail.com>
13 years agovnc-auth-sasl: fix a memory leak
Blue Swirl [Wed, 12 Jan 2011 19:48:56 +0000 (19:48 +0000)]
vnc-auth-sasl: fix a memory leak

Fix a memory leak reported by cppcheck:
[/src/qemu/ui/vnc-auth-sasl.c:448]: (error) Memory leak: mechname

Signed-off-by: Blue Swirl <blauwirbel@gmail.com>
13 years agoaudio: split sample conversion and volume mixing
Michael Walle [Wed, 5 Jan 2011 00:05:47 +0000 (01:05 +0100)]
audio: split sample conversion and volume mixing

Refactor the volume mixing, so it can be reused for capturing devices.
Additionally, it removes superfluous multiplications with the nominal
volume within the hardware voice code path.

Signed-off-by: Michael Walle <michael@walle.cc>
Signed-off-by: malc <av1474@comtv.ru>
13 years agodisas: remove opcode printing on ARM hosts
Aurelien Jarno [Wed, 12 Jan 2011 13:55:36 +0000 (14:55 +0100)]
disas: remove opcode printing on ARM hosts

Following commit 5d48e9174e3bfa8655e1dc8f80887acd9040b427, it's possible
to remove the hack that used to display the opcodes on ARM hosts only.

Signed-off-by: Aurelien Jarno <aurelien@aurel32.net>
13 years agoarm-dis: Include opcode hex when doing disassembly
Peter Maydell [Mon, 10 Jan 2011 16:16:26 +0000 (16:16 +0000)]
arm-dis: Include opcode hex when doing disassembly

Enhance the ARM disassembler used for debugging so that it includes
the hex dump of the opcode as well as the symbolic disassembly.

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Aurelien Jarno <aurelien@aurel32.net>
13 years agotcg arm/mips/ia64: add a comment about retranslation and caches
Aurelien Jarno [Mon, 10 Jan 2011 17:30:05 +0000 (18:30 +0100)]
tcg arm/mips/ia64: add a comment about retranslation and caches

Add a comment about cache coherency and retranslation, so that people
developping new targets based on existing ones are warned of the issue.

Acked-by: Edgar E. Iglesias <edgar.iglesias@gmail.com>
Signed-off-by: Aurelien Jarno <aurelien@aurel32.net>
13 years agolinux-user: Add configure check for linux/fiemap.h and IOC_FS_FIEMAP
Peter Maydell [Mon, 10 Jan 2011 13:11:24 +0000 (13:11 +0000)]
linux-user: Add configure check for linux/fiemap.h and IOC_FS_FIEMAP

Add a configure check for the existence of linux/fiemap.h and the
IOC_FS_FIEMAP ioctl. This fixes a compilation failure on Linux
systems which don't have that header file.

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Aurelien Jarno <aurelien@aurel32.net>
13 years agoARM: Fix decoding of VQSHL/VQSHLU immediate forms
Peter Maydell [Sat, 8 Jan 2011 16:01:16 +0000 (16:01 +0000)]
ARM: Fix decoding of VQSHL/VQSHLU immediate forms

Fix errors in the decoding of ARM VQSHL/VQSHLU immediate forms,
including using the new VQSHLU helper functions where appropriate.

Reviewed-by: Aurelien Jarno <aurelien@aurel32.net>
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Aurelien Jarno <aurelien@aurel32.net>
13 years agoARM: add neon helpers for VQSHLU
Juha Riihimäki [Sat, 8 Jan 2011 16:01:15 +0000 (16:01 +0000)]
ARM: add neon helpers for VQSHLU

Add neon helper functions to implement VQSHLU, which is a
signed-to-unsigned version of VQSHL available only as an
immediate form.

Signed-off-by: Juha Riihimäki <juha.riihimaki@nokia.com>
Reviewed-by: Aurelien Jarno <aurelien@aurel32.net>
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Aurelien Jarno <aurelien@aurel32.net>
13 years agotarget-sh4: fix fpu disabled/illegal exception
Aurelien Jarno [Tue, 11 Jan 2011 15:13:34 +0000 (16:13 +0100)]
target-sh4: fix fpu disabled/illegal exception

Illegal instructions in a slot delay should generate a slot illegal
instruction exception instead of an illegal instruction exception.

The current PC should be saved before generating such an exception,
but should not be corrected if in a delay slot, given it's already
done in the exception handler do_interrupt().

Signed-off-by: Aurelien Jarno <aurelien@aurel32.net>
13 years agocris: Remove unused orig_flags
Edgar E. Iglesias [Mon, 10 Jan 2011 22:28:08 +0000 (23:28 +0100)]
cris: Remove unused orig_flags

Based on a patch by Blue Swirl <blauwirbel@gmail.com>.

Signed-off-by: Edgar E. Iglesias <edgar@axis.com>
13 years agocris: Allow more TB chaining for crisv10
Edgar E. Iglesias [Mon, 10 Jan 2011 22:24:36 +0000 (23:24 +0100)]
cris: Allow more TB chaining for crisv10

Signed-off-by: Edgar E. Iglesias <edgar@axis.com>
13 years agocris: Support disassembly of crisv10
Edgar E. Iglesias [Mon, 10 Jan 2011 21:31:09 +0000 (22:31 +0100)]
cris: Support disassembly of crisv10

Signed-off-by: Edgar E. Iglesias <edgar@axis.com>
13 years agoMerge remote branch 'mst/for_anthony' into staging
Anthony Liguori [Mon, 10 Jan 2011 16:32:01 +0000 (10:32 -0600)]
Merge remote branch 'mst/for_anthony' into staging

13 years agoslirp: fix unaligned access in bootp code
Aurelien Jarno [Thu, 6 Jan 2011 21:43:13 +0000 (22:43 +0100)]
slirp: fix unaligned access in bootp code

Slirp code tries to be smart an avoid data copy by using pointer to
the data. This solution leads to unaligned access, in this case
preq_addr, which is a 32-bit long structure. There is no real point
of avoiding data copy in a such case, as the value itself is smaller
or the same size as a pointer.

The patch replaces pointers to the preq_addr structure by the strcture
itself, and use the address 0.0.0.0 if no address has been requested
(this is not a valid address in such a request). It compares it with
htonl(0L) for correctness reasons, in case a code checker look for such
mistakes. It also uses memcpy() for copying the data, which takes care
of alignement issues.

This fixes an unaligned access on IA64 host while requesting a DHCP
address.

Signed-off-by: Aurelien Jarno <aurelien@aurel32.net>
13 years agobswap.h: add cpu_to_be64wu()
Aurelien Jarno [Thu, 6 Jan 2011 21:43:13 +0000 (22:43 +0100)]
bswap.h: add cpu_to_be64wu()

Signed-off-by: Aurelien Jarno <aurelien@aurel32.net>
13 years agotcg/arm: improve constant loading
Aurelien Jarno [Thu, 6 Jan 2011 21:43:13 +0000 (22:43 +0100)]
tcg/arm: improve constant loading

Improve constant loading in two ways:
- On all ARM versions, it's possible to load 0xffffff00 = -0x100 using
  the mvn rd, #0. Fix the conditions.
- On <= ARMv6 versions, where movw and movt are not available, load the
  constants using mov and orr with rotations depending on the constant
  to load. This is very useful for example to load constants where the
  low byte is 0. This reduce the generated code size by about 7%.

Also fix the coding style at the same time.

Cc: Andrzej Zaborowski <balrog@zabor.org>
Signed-off-by: Aurelien Jarno <aurelien@aurel32.net>
13 years agotcg/ia64: remove an unnecessary stop bit
Aurelien Jarno [Mon, 10 Jan 2011 00:39:49 +0000 (01:39 +0100)]
tcg/ia64: remove an unnecessary stop bit

Spotted by Richard Henderson.

Signed-off-by: Aurelien Jarno <aurelien@aurel32.net>
13 years agotarget-sh4: improve TLB
Aurelien Jarno [Sun, 9 Jan 2011 22:53:45 +0000 (23:53 +0100)]
target-sh4: improve TLB

SH4 is using 16-bit instructions which means most of the constants are
loaded through a constant pool at the end of the subroutine. The same
memory page is therefore accessed in exec and read mode.

With the current implementation, a QEMU TLB entry is set to read or
read/write mode after an UTLB search and to exec mode after an ITLB
search, which causes a lot of TLB exceptions to switch from read or
read/write to exec and vice versa.

This patch optimizes that by already setting the QEMU TLB entry in read
or read/write mode when an UTLB entry is copied into ITLB (during an
ITLB miss). This improve the emulation speed by about 14%.

Signed-off-by: Aurelien Jarno <aurelien@aurel32.net>
13 years agotarget-sh4: implement writes to mmaped ITLB
Aurelien Jarno [Sun, 9 Jan 2011 22:53:45 +0000 (23:53 +0100)]
target-sh4: implement writes to mmaped ITLB

Some Linux kernels seems to implement ITLB/UTLB flushing through by
writing all TLB entries through the memory mapped interface instead
of writing one to MMUCR.TI.

Implement memory mapped ITLB write interface so that such kernels can
boot. This fixes https://bugs.launchpad.net/bugs/700774 .

Signed-off-by: Aurelien Jarno <aurelien@aurel32.net>
13 years agotcg: fix typo in readme
Mike Frysinger [Sun, 9 Jan 2011 08:45:45 +0000 (03:45 -0500)]
tcg: fix typo in readme

Signed-off-by: Mike Frysinger <vapier@gentoo.org>
Signed-off-by: Blue Swirl <blauwirbel@gmail.com>
13 years agotcg/README: Spelling fixes
Stefan Weil [Fri, 7 Jan 2011 20:34:50 +0000 (21:34 +0100)]
tcg/README: Spelling fixes

Signed-off-by: Stefan Weil <weil@mail.berlios.de>
Signed-off-by: Blue Swirl <blauwirbel@gmail.com>
13 years agoqemu-tech: Spelling fixes
Stefan Weil [Fri, 7 Jan 2011 20:31:39 +0000 (21:31 +0100)]
qemu-tech: Spelling fixes

Signed-off-by: Stefan Weil <weil@mail.berlios.de>
Signed-off-by: Blue Swirl <blauwirbel@gmail.com>
13 years agoqemu-doc: Spelling fixes
Stefan Weil [Fri, 7 Jan 2011 17:59:16 +0000 (18:59 +0100)]
qemu-doc: Spelling fixes

neccessary -> necessary
Keberos -> Kerberos
emuilated -> emulated
transciever -> transceiver
emulaton -> emulation
inital -> initial
MingGW -> MinGW

Signed-off-by: Stefan Weil <weil@mail.berlios.de>
Signed-off-by: Blue Swirl <blauwirbel@gmail.com>
13 years agoqemu-doc: Add missing blanks
Stefan Weil [Fri, 7 Jan 2011 17:59:15 +0000 (18:59 +0100)]
qemu-doc: Add missing blanks

Signed-off-by: Stefan Weil <weil@mail.berlios.de>
Signed-off-by: Blue Swirl <blauwirbel@gmail.com>
13 years agoqemu-doc: Add missing menu entry
Stefan Weil [Fri, 7 Jan 2011 17:59:14 +0000 (18:59 +0100)]
qemu-doc: Add missing menu entry

Each @section should have a menu entry and a @node entry.

Signed-off-by: Stefan Weil <weil@mail.berlios.de>
Signed-off-by: Blue Swirl <blauwirbel@gmail.com>
13 years agoqemu-doc: Clean whitespace
Stefan Weil [Fri, 7 Jan 2011 17:59:13 +0000 (18:59 +0100)]
qemu-doc: Clean whitespace

Remove blanks at line endings.

Signed-off-by: Stefan Weil <weil@mail.berlios.de>
Signed-off-by: Blue Swirl <blauwirbel@gmail.com>
13 years agousb-bsd: fix a file descriptor leak
Blue Swirl [Sun, 9 Jan 2011 14:43:33 +0000 (14:43 +0000)]
usb-bsd: fix a file descriptor leak

Fix a file descriptor leak reported by cppcheck:
[/src/qemu/usb-bsd.c:392]: (error) Resource leak: bfd
[/src/qemu/usb-bsd.c:388]: (error) Resource leak: dfd

Rearrange the code to avoid descriptor leaks. Also add braces as
needed.

Signed-off-by: Blue Swirl <blauwirbel@gmail.com>
13 years agoalsaaudio: add endianness support for VoiceIn
Michael Walle [Sat, 8 Jan 2011 16:53:30 +0000 (17:53 +0100)]
alsaaudio: add endianness support for VoiceIn

Signed-off-by: Michael Walle <michael@walle.cc>
Signed-off-by: malc <av1474@comtv.ru>
13 years agoossaudio: add endianness support for VoiceIn
Michael Walle [Sat, 8 Jan 2011 16:53:29 +0000 (17:53 +0100)]
ossaudio: add endianness support for VoiceIn

Signed-off-by: Michael Walle <michael@walle.cc>
Signed-off-by: malc <av1474@comtv.ru>
13 years agotcg/mips: fix branch target change during code retranslation
Aurelien Jarno [Thu, 6 Jan 2011 21:43:14 +0000 (22:43 +0100)]
tcg/mips: fix branch target change during code retranslation

TCG on MIPS was trying to avoid changing the branch offset, but didn't
due to a stupid typo. Fix it.

Signed-off-by: Aurelien Jarno <aurelien@aurel32.net>
13 years agotcg/arm: fix qemu_st64 for big endian targets
Aurelien Jarno [Thu, 6 Jan 2011 21:43:13 +0000 (22:43 +0100)]
tcg/arm: fix qemu_st64 for big endian targets

Due to a typo, qemu_st64 doesn't properly byteswap the 32-bit low word of
a 64 bit word before saving it. This patch fixes that.

Acked-by: Andrzej Zaborowski <balrogg@gmail.com>
Signed-off-by: Aurelien Jarno <aurelien@aurel32.net>
13 years agotcg/arm: fix branch target change during code retranslation
Aurelien Jarno [Thu, 6 Jan 2011 21:43:13 +0000 (22:43 +0100)]
tcg/arm: fix branch target change during code retranslation

QEMU uses code retranslation to restore the CPU state when an exception
happens. For it to work the retranslation must not modify the generated
code. This is what is currently implemented in ARM TCG.

However on CPU that don't have icache/dcache/memory synchronised like
ARM, this requirement is stronger and code retranslation must not modify
the generated code "atomically", as the cache line might be flushed
at any moment (interrupt, exception, task switching), even if not
triggered by QEMU. The probability for this to happen is very low, and
depends on cache size and associativiy, machine load, interrupts, so the
symptoms are might happen randomly.

This requirement is currently not followed in tcg/arm, for the
load/store code, which basically has the following structure:
  1) tlb access code is written
  2) conditional fast path code is written
  3) branch is written with a temporary target
  4) slow path code is written
  5) branch target is updated
The cache lines corresponding to the retranslated code is not flushed
after code retranslation as the generated code is supposed to be the
same. However if the cache line corresponding to the branch instruction
is flushed between step 3 and 5, and is not flushed again before the
code is executed again, the branch target is wrong. In the guest, the
symptoms are MMU page fault at a random addresses, which leads to
kernel page fault or segmentation faults.

The patch fixes this issue by avoiding writing the branch target until
it is known, that is by writing only the branch instruction first, and
later only the offset.

This fixes booting linux guests on ARM hosts (tested: arm, i386, mips,
mipsel, sh4, sparc).

Acked-by: Edgar E. Iglesias <edgar.iglesias@gmail.com>
Signed-off-by: Aurelien Jarno <aurelien@aurel32.net>
13 years agoMerge branch 'linux-user-for-upstream' of git://gitorious.org/qemu-maemo/qemu
Aurelien Jarno [Sat, 8 Jan 2011 15:25:48 +0000 (16:25 +0100)]
Merge branch 'linux-user-for-upstream' of git://gitorious.org/qemu-maemo/qemu

* 'linux-user-for-upstream' of git://gitorious.org/qemu-maemo/qemu:
  Remove dead code for ARM semihosting commandline handling
  Fix commandline handling for ARM semihosted executables
  linux-user: Fix incorrect NaN detection in ARM nwfpe emulation
  softfloat: Implement floatx80_is_any_nan() and float128_is_any_nan()
  linux-user: Implement FS_IOC_FIEMAP ioctl
  linux-user: Support ioctls whose parameter size is not constant
  linux-user: Implement sync_file_range{,2} syscalls

13 years agoRemove dead code for ARM semihosting commandline handling
Wolfgang Schildbach [Mon, 6 Dec 2010 15:06:06 +0000 (15:06 +0000)]
Remove dead code for ARM semihosting commandline handling

There are some bits in the code which were used to store the commandline for
the semihosting call. These bits are now write-only and can be removed.

Signed-off-by: Wolfgang Schildbach <wschi@dolby.com>
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Riku Voipio <riku.voipio@iki.fi>
13 years agoFix commandline handling for ARM semihosted executables
Wolfgang Schildbach [Mon, 6 Dec 2010 15:06:05 +0000 (15:06 +0000)]
Fix commandline handling for ARM semihosted executables

Use the copy of the command line that loader_build_argptr() sets up in guest
memory as the command line to return from the ARM SYS_GET_CMDLINE semihosting
call. Previously we were using a pointer to memory which had already been
freed before the guest program started.

This fixes https://bugs.launchpad.net/qemu/+bug/673613 .

Signed-off-by: Wolfgang Schildbach <wschi@dolby.com>
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Riku Voipio <riku.voipio@iki.fi>
13 years agolinux-user: Fix incorrect NaN detection in ARM nwfpe emulation
Peter Maydell [Thu, 6 Jan 2011 18:34:44 +0000 (18:34 +0000)]
linux-user: Fix incorrect NaN detection in ARM nwfpe emulation

The code in the linux-user ARM nwfpe emulation was incorrectly
checking only for quiet NaNs when it should have been checking
for any kind of NaN. This is probably because the code in
question was taken from the Linux kernel, whose copy of the
softfloat library had been modified so that float*_is_nan()
returned true for all NaNs, not just quiet ones. The qemu
equivalent function is float*_is_any_nan(), so use that.
NB that this code is really obsolete since nobody uses FPE
for actual arithmetic now; this is just cleanup following
the recent renaming of the NaN related functions.

Acked-by: Aurelien Jarno <aurelien@aurel32.net>
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Riku Voipio <riku.voipio@iki.fi>
13 years agosoftfloat: Implement floatx80_is_any_nan() and float128_is_any_nan()
Peter Maydell [Thu, 6 Jan 2011 18:34:43 +0000 (18:34 +0000)]
softfloat: Implement floatx80_is_any_nan() and float128_is_any_nan()

Implement versions of float*_is_any_nan() for the floatx80 and
float128 types.

Acked-by: Aurelien Jarno <aurelien@aurel32.net>
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Riku Voipio <riku.voipio@iki.fi>
13 years agolinux-user: Implement FS_IOC_FIEMAP ioctl
Peter Maydell [Thu, 6 Jan 2011 15:04:18 +0000 (15:04 +0000)]
linux-user: Implement FS_IOC_FIEMAP ioctl

Implement the FS_IOC_FIEMAP ioctl using the new support for
custom handling of ioctls; this is needed because the struct
that is passed includes a variable-length array.

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Riku Voipio <riku.voipio@iki.fi>
13 years agolinux-user: Support ioctls whose parameter size is not constant
Peter Maydell [Thu, 6 Jan 2011 15:04:17 +0000 (15:04 +0000)]
linux-user: Support ioctls whose parameter size is not constant

Some ioctls (for example FS_IOC_FIEMAP) use structures whose size is
not constant. The generic argument conversion code in do_ioctl()
cannot handle this, so add support for implementing a special-case
handler for a particular ioctl which does the conversion itself.

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Riku Voipio <riku.voipio@iki.fi>
13 years agocris: Allow more TB chaning
Edgar E. Iglesias [Fri, 7 Jan 2011 15:18:13 +0000 (16:18 +0100)]
cris: Allow more TB chaning

Signed-off-by: Edgar E. Iglesias <edgar@axis.com>
13 years agolinux-user: Implement sync_file_range{,2} syscalls
Peter Maydell [Thu, 6 Jan 2011 11:05:10 +0000 (11:05 +0000)]
linux-user: Implement sync_file_range{,2} syscalls

Implement the missing syscalls sync_file_range and sync_file_range2.
The latter in particular is used by newer versions of apt on Ubuntu
for ARM.

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Riku Voipio <riku.voipio@iki.fi>
13 years agocris: Avoid useless tmp in t_gen_cc_jmp()
Edgar E. Iglesias [Fri, 7 Jan 2011 11:50:38 +0000 (12:50 +0100)]
cris: Avoid useless tmp in t_gen_cc_jmp()

Signed-off-by: Edgar E. Iglesias <edgar@axis.com>
13 years agocirrus: delete GCC 4.6 warnings
Aurelien Jarno [Thu, 6 Jan 2011 21:28:33 +0000 (22:28 +0100)]
cirrus: delete GCC 4.6 warnings

Commit 92d675d1c1f23f3617e24b63c825074a1d1da44b triggered uninitialized
variables warning with GCC 4.6. Fix them by adding zero initializers.

Acked-by: Blue Swirl <blauwirbel@gmail.com>
Signed-off-by: Aurelien Jarno <aurelien@aurel32.net>
13 years agotarget-arm: wire up the softfloat flush_input_to_zero flag
Peter Maydell [Thu, 6 Jan 2011 19:37:55 +0000 (19:37 +0000)]
target-arm: wire up the softfloat flush_input_to_zero flag

Wire up the new softfloat support for flushing input denormals
to zero on ARM. The FPSCR FZ bit enables flush-to-zero for
both inputs and outputs, but the reporting of when inputs are
flushed to zero is via a separate IDC bit rather than the UFC
(underflow) bit used when output denormals are flushed to zero.

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Acked-by: Aurelien Jarno <aurelien@aurel32.net>
Signed-off-by: Aurelien Jarno <aurelien@aurel32.net>
13 years agotarget-arm: Set softfloat cumulative exc flags from correct FPSCR bits
Peter Maydell [Thu, 6 Jan 2011 19:37:54 +0000 (19:37 +0000)]
target-arm: Set softfloat cumulative exc flags from correct FPSCR bits

When handling a write to the ARM FPSCR, set the softfloat cumulative
exception flags from the cumulative flags in the FPSCR, not the
exception-enable bits. Also don't apply a mask: vfp_exceptbits_to_host
will only look at the correct bits anyway.

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Acked-by: Aurelien Jarno <aurelien@aurel32.net>
Signed-off-by: Aurelien Jarno <aurelien@aurel32.net>