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>
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>
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>
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>
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>
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>
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>
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>
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>
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>
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>
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>
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>
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>
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>
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>
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>
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>
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>
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>
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>
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>
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>
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>
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>
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>
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>
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>
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>
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>
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>
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>
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>
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>
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>
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>
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>
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>
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>
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>
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>
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>
Anthony Liguori [Mon, 10 Jan 2011 16:32:01 +0000 (10:32 -0600)]
Merge remote branch 'mst/for_anthony' into staging
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>
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>
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>
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>
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>
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>
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>
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>
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>
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>
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>
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>
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>
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>
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>
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>
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>
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>
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>
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
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>
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>
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>
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>
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>
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>
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>
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>
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>
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>
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>
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>
Peter Maydell [Thu, 6 Jan 2011 19:37:53 +0000 (19:37 +0000)]
softfloat: Implement flushing input denormals to zero
Add support to softfloat for flushing input denormal float32 and float64
to zero. softfloat's existing 'flush_to_zero' flag only flushes denormals
to zero on output. Some CPUs need input denormals to be flushed before
processing as well. Implement this, using a new status flag to enable it
and a new exception status bit to indicate when it has happened. Existing
CPUs should be unaffected as there is no behaviour change unless the
mode is enabled.
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Acked-by: Aurelien Jarno <aurelien@aurel32.net>
Signed-off-by: Aurelien Jarno <aurelien@aurel32.net>
Aurelien Jarno [Thu, 6 Jan 2011 18:53:56 +0000 (19:53 +0100)]
target-arm: fix SMMLA/SMMLS instructions
SMMLA and SMMLS are broken on both in normal and thumb mode, that is
both (different) implementations are wrong. They try to avoid a 64-bit
add for the rounding, which is not trivial if you want to support both
SMMLA and SMMLS with the same code.
The code below uses the same implementation for both modes, using the
code from the ARM manual. It also fixes the thumb decoding that was a
mix between normal and thumb mode.
This fixes the issues reported in
https://bugs.launchpad.net/qemu/+bug/629298
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Aurelien Jarno <aurelien@aurel32.net>
Blue Swirl [Thu, 6 Jan 2011 18:25:37 +0000 (18:25 +0000)]
block: delete a write-only variable
Avoid a warning with GCC 4.6.0:
/src/qemu/block.c: In function 'bdrv_img_create':
/src/qemu/block.c:2862:25: error: variable 'fmt' set but not used [-Werror=unused-but-set-variable]
CC: Kevin Wolf <kwolf@redhat.com>
Signed-off-by: Blue Swirl <blauwirbel@gmail.com>
Blue Swirl [Thu, 6 Jan 2011 18:25:26 +0000 (18:25 +0000)]
cirrus_vga: Declare as little endian
This patch replaces explicit bswaps with endianness hints to the
mmio layer.
CC: Alexander Graf <agraf@suse.de>
Signed-off-by: Blue Swirl <blauwirbel@gmail.com>
Blue Swirl [Thu, 6 Jan 2011 18:24:35 +0000 (18:24 +0000)]
pc: move port 92 stuff back to pc.c from pckbd.c
956a3e6bb7386de48b642d4fee11f7f86a2fcf9a introduced a bug concerning
reset bit for port 92.
Since the keyboard output port and port 92 are not compatible anyway,
let's separate them.
Reported-by: Peter Lieven <pl@dlh.net>
Signed-off-by: Blue Swirl <blauwirbel@gmail.com>
--
v2: added reset handler and VMState
Aurelien Jarno [Thu, 6 Jan 2011 14:38:19 +0000 (15:38 +0100)]
target-ppc: Implement correct NaN propagation rules
Implement the correct NaN propagation rules for PowerPC targets by
providing an appropriate pickNaN function.
Also fix the #ifdef tests for default NaN definition, the correct name
is TARGET_PPC instead of TARGET_POWERPC.
Reviewed-by: Nathan Froyd <froydnj@codesourcery.com>
Signed-off-by: Aurelien Jarno <aurelien@aurel32.net>
Aurelien Jarno [Thu, 6 Jan 2011 14:38:19 +0000 (15:38 +0100)]
target-mips: Implement correct NaN propagation rules
Implement the correct NaN propagation rules for MIPS targets by
providing an appropriate pickNaN function.
Signed-off-by: Aurelien Jarno <aurelien@aurel32.net>
Aurelien Jarno [Thu, 6 Jan 2011 14:38:19 +0000 (15:38 +0100)]
softfloat: use float{32,64,x80,128}_maybe_silence_nan()
Use float{32,64,x80,128}_maybe_silence_nan() instead of toggling the
sNaN bit manually. This allow per target implementation of sNaN to qNaN
conversion.
Signed-off-by: Aurelien Jarno <aurelien@aurel32.net>
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Aurelien Jarno [Thu, 6 Jan 2011 14:38:19 +0000 (15:38 +0100)]
softfloat: add float{x80,128}_maybe_silence_nan()
Add float{x80,128}_maybe_silence_nan() functions, they will be need by
propagateFloat{x80,128}NaN().
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Aurelien Jarno <aurelien@aurel32.net>
Aurelien Jarno [Thu, 6 Jan 2011 14:38:19 +0000 (15:38 +0100)]
softfloat: fix float{32,64}_maybe_silence_nan() for MIPS
On targets that define sNaN with the sNaN bit as one, simply clearing
this bit may correspond to an infinite value.
Convert it to a default NaN if SNAN_BIT_IS_ONE, as it corresponds to
the MIPS implementation, the only emulated CPU with SNAN_BIT_IS_ONE.
When other CPU of this type are added, this might be updated to include
more cases.
Acked-by: Alexander Graf <agraf@suse.de>
Signed-off-by: Aurelien Jarno <aurelien@aurel32.net>
Aurelien Jarno [Thu, 6 Jan 2011 14:38:19 +0000 (15:38 +0100)]
softfloat: rename *IsNaN variables to *IsQuietNaN
Similarly to what has been done in commit
185698715dfb18c82ad2a5dbc169908602d43e81 rename the misnamed *IsNaN
variables into *IsQuietNaN.
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Aurelien Jarno <aurelien@aurel32.net>
Aurelien Jarno [Thu, 6 Jan 2011 14:38:19 +0000 (15:38 +0100)]
softfloat: remove HPPA specific code
We don't have any HPPA target, so let's remove HPPA specific code. It
can be re-added when someone adds an HPPA target.
This has been blessed by Stuart Brady <sdb@zubnet.me.uk>, author of the
target-hppa fork.
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Aurelien Jarno <aurelien@aurel32.net>
Aurelien Jarno [Thu, 6 Jan 2011 14:38:18 +0000 (15:38 +0100)]
target-ppc: use float32_is_any_nan()
Use the new function float32_is_any_nan() instead of
float32_is_quiet_nan() || float32_is_signaling_nan().
Acked-by: Alexander Graf <agraf@suse.de>
Signed-off-by: Aurelien Jarno <aurelien@aurel32.net>
Aurelien Jarno [Thu, 6 Jan 2011 14:38:18 +0000 (15:38 +0100)]
target-ppc: fix default qNaN
On PPC the default qNaN doesn't have the sign bit set.
Acked-by: Alexander Graf <agraf@suse.de>
Signed-off-by: Aurelien Jarno <aurelien@aurel32.net>
Aurelien Jarno [Thu, 6 Jan 2011 14:38:18 +0000 (15:38 +0100)]
target-ppc: remove PRECISE_EMULATION define
The PRECISE_EMULATION is "hardcoded" to one in target-ppc/exec.h and not
something easily tunable. Remove it and non-precise emulation code as
it doesn't make a noticeable difference in speed. People wanting speed
improvement should use softfloat-native instead.
Acked-by: Alexander Graf <agraf@suse.de>
Signed-off-by: Aurelien Jarno <aurelien@aurel32.net>
Edgar E. Iglesias [Wed, 5 Jan 2011 01:21:19 +0000 (02:21 +0100)]
microblaze: Use more TB chaining
For some workloads with tight loops this ~doubles the emulation
speed.
Signed-off-by: Edgar E. Iglesias <edgar.iglesias@petalogix.com>
Aurelien Jarno [Tue, 4 Jan 2011 20:58:24 +0000 (21:58 +0100)]
cirrus_vga: fix division by 0 for color expansion rop
Commit
d85d0d3883f5a567fa2969a0396e42e0a662b3fa introduces a regression
with Windows ME that leads to a division by 0 and a crash.
It uses the color expansion rop with the source pitch set to 0. This is
something allowed, as the manual explicitely says "When the source of
color-expand data is display memory, the source pitch is ignored.".
This patch fixes this regression by computing sx, sy and others
variables only if they are going to be used later, that is for a plain
copy ROP. It basically consists in moving code.
Signed-off-by: Aurelien Jarno <aurelien@aurel32.net>
Aurelien Jarno [Tue, 4 Jan 2011 20:58:24 +0000 (21:58 +0100)]
Fix curses on big endian hosts
On big endian hosts, the curses interface is unusable: the emulated
graphic card only displays garbage, while the monitor interface displays
nothing (or rather only spaces).
The curses interface is waiting for data in native endianness, so
console_write_ch() should not do any conversion. The conversion should
be done when reading the video buffer in hw/vga.c. I supposed this
buffer is in little endian mode, though it's not impossible that the
data is actually in guest endianness. I currently have no big endian
guest to way (they all switch to graphic mode immediately).
Signed-off-by: Aurelien Jarno <aurelien@aurel32.net>
Michael Walle [Tue, 4 Jan 2011 00:48:55 +0000 (01:48 +0100)]
noaudio: correctly account acquired samples
This will fix the return value of the function which otherwise returns too
many samples because sw->total_hw_samples_acquired isn't correctly
accounted.
Signed-off-by: Michael Walle <michael@walle.cc>
Signed-off-by: malc <av1474@comtv.ru>
Peter Maydell [Thu, 16 Dec 2010 11:51:18 +0000 (11:51 +0000)]
target-arm: Implement correct NaN propagation rules
Implement the correct NaN propagation rules for ARM targets by
providing an appropriate pickNaN function.
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Aurelien Jarno <aurelien@aurel32.net>
Peter Maydell [Thu, 16 Dec 2010 11:51:17 +0000 (11:51 +0000)]
softfloat: abstract out target-specific NaN propagation rules
IEEE754 doesn't specify precisely what NaN should be returned as
the result of an operation on two input NaNs. This is therefore
target-specific. Abstract out the code in propagateFloat*NaN()
which was implementing the x87 propagation rules, so that it
can be easily replaced on a per-target basis.
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Aurelien Jarno <aurelien@aurel32.net>
Peter Maydell [Fri, 17 Dec 2010 15:56:06 +0000 (15:56 +0000)]
softfloat: Rename float*_is_nan() functions to float*_is_quiet_nan()
The softfloat functions float*_is_nan() were badly misnamed,
because they return true only for quiet NaNs, not for all NaNs.
Rename them to float*_is_quiet_nan() to more accurately reflect
what they do.
This change was produced by:
perl -p -i -e 's/_is_nan/_is_quiet_nan/g' $(git grep -l is_nan)
(with the results manually checked.)
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Nathan Froyd <froydnj@codesourcery.com>
Acked-by: Edgar E. Iglesias <edgar.iglesias@gmail.com>
Signed-off-by: Aurelien Jarno <aurelien@aurel32.net>
Aurelien Jarno [Tue, 28 Dec 2010 16:46:59 +0000 (17:46 +0100)]
TCG: Improve tb_phys_hash_func()
Most of emulated CPU have instructions aligned on 16 or 32 bits, while
on others GCC tries to align the target jump location. This means that
1/2 or 3/4 of tb_phys_hash entries are never used.
Update the hash function tb_phys_hash_func() to ignore the two lowest
bits of the address. This brings a 6% speed-up when booting a MIPS
image.
Signed-off-by: Aurelien Jarno <aurelien@aurel32.net>
Aurelien Jarno [Fri, 31 Dec 2010 16:50:27 +0000 (17:50 +0100)]
target-arm: fix UMAAL instruction
UMAAL should use unsigned multiply instead of signed.
This patch fixes this issue by handling UMAAL separately from
UMULL/UMLAL/SMULL/SMLAL as these instructions are different
enough. It also explicitly list instructions in case and catch
nonexistent instruction as illegal. Also fixes a few style issues.
This fixes the issues reported in
https://bugs.launchpad.net/qemu/+bug/696015
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Aurelien Jarno <aurelien@aurel32.net>
Mike Pall [Fri, 31 Dec 2010 20:17:53 +0000 (21:17 +0100)]
Fix translation of unary PPC/SPE instructions (efdneg etc.).
Signed-off-by: Mike Pall <mike-lp10@luajit.org>
Signed-off-by: Aurelien Jarno <aurelien@aurel32.net>