If translation block is interrupted by e.g. mmu exception
we need to compute conditional flags for inclusion into
saved cpu state. Otherwise after return from trap
conditional instructions would use stale psr/xcc data.
Signed-off-by: igor.v.kovalenko@gmail.com
--
Kind regards,
Igor V. Kovalenko
- implement "used" bit in tlb translation entry
- mark tlb entry used if qemu code/data translation succeeds
- fold i/d mmu replacement writes code into replace_tlb_1bit_lru which
adds 1bit lru replacement algorithm; previously code tried to replace
first unlocked entry only
- extract more bitmasks to named macros
- add "immu" or "dmmu" type name to debugging output where appropriate
Signed-off-by: igor.v.kovalenko@gmail.com
--
Kind regards,
Igor V. Kovalenko
- add names to mmu registers, this helps understanding the code which
uses/modifies them.
- fold i/d mmu tlb entries tag and tte arrays into arrays of tlb entries
- extract demap_tlb routine (code duplication)
- extract replace_tlb routine (code duplication)
- flush qemu tlb translations when replacing sparc64 mmu tlb entries
I have no test case which demands flushing qemu translations,
and this patch should have no other visible changes to runtime.
Signed-off-by: igor.v.kovalenko@gmail.com
--
Kind regards,
Igor V. Kovalenko
I used the following command to enable debugging:
perl -p -i -e 's/^\/\/#define DEBUG/#define DEBUG/g' * */* */*/*
Signed-off-by: Blue Swirl <blauwirbel@gmail.com>
On Sun, Jul 12, 2009 at 12:09 PM, Blue Swirl<blauwirbel@gmail.com> wrote:
> On 7/12/09, Igor Kovalenko <igor.v.kovalenko@gmail.com> wrote:
>> Good trap handling is required to process interrupts.
>> This patch fixes the following:
>>
>> - sparc64 has no wim register
>> - sparc64 has no psret register, use IE bit of pstate
>> extract IE checking code to cpu_interrupts_enabled
>> - alternate globals are not available if cpu has GL feature
>> in this case bit AG of pstate is constant zero
>> - write to pstate must actually write pstate
>> even if cpu has GL feature
>>
>> Also timer interrupt is handled using do_interrupt.
>
> A bit too much for one patch. Please also remove the code instead of
> commenting out.
I now excluded timer interrupt related part.
To my mind other changes are essentially tied together.
> PUT_PSR for Sparc64 needs CC_OP = CC_OP_FLAGS; like Sparc32.
Fixed, please find attached the updated version.
--
Kind regards,
Igor V. Kovalenko
On Sun, Jul 12, 2009 at 12:43 AM, Stuart Brady<sdbrady@ntlworld.com> wrote:
> On Sat, Jul 11, 2009 at 10:22:18PM +0400, Igor Kovalenko wrote:
>> It is clear that intention is to byte-swap value to be written, not
>> the target address.
>
> @@ -1949,13 +1949,13 @@ void helper_st_asi(target_ulong addr, ta
> case 0x89: // Secondary LE
> switch(size) {
> case 2:
> - addr = bswap16(addr);
> + addr = bswap16(val);
> ^^^^
> Shouldn't that be 'val = bswap16(val)' (and likewise for the 32-bit and
> 64-bit cases)? Also needs a 'signed-off-by:'...
>
> Cheers,
> --
> Stuart Brady
>
Thanks, that part I did not runtime-tested.
Not sure if those asi stores are of any use for user-mode emulator.
Please find attached the corrected version.
Signed-off-by: igor.v.kovalenko@gmail.com
--
Kind regards,
Igor V. Kovalenko
This patch extracts common part of sparc64 tag
matching code used by IMMU and DMMU lookups.
Signed-off-by: igor.v.kovalenko@gmail.com
--
Kind regards,
Igor V. Kovalenko
This Implement physical address truncation in mmu bypass mode.
IMMU bypass is also active when cpu enters RED_STATE
Signed-off-by: igor.v.kovalenko@gmail.com
--
Kind regards,
Igor V. Kovalenko
The only target dependency for most hardware is sizeof(target_phys_addr_t).
Build these files into a convenience library, and use that instead of
building for every target.
Remove and poison various target specific macros to avoid bogus target
dependencies creeping back in.
Big/Little endian is not handled because devices should not know or care
about this to start with.
Signed-off-by: Paul Brook <paul@codesourcery.com>
Include assert.h from qemu-common.h and remove other direct uses.
cpu-all.h still need to include it because of the dyngen-exec.h hacks
Signed-off-by: Paul Brook <paul@codesourcery.com>
Revert previous change to get_physical_address_code:
I/D MMU context register is shared, so using dmmuregs[1] is correct
Signed-off-by: Igor V. Kovalenko <igor.v.kovalenko@gmail.com>
TLB match code must respect page size, otherwise 4M page mappings may
be not found.
Also correct a typo in get_physical_address_code which should use IMMU
registers.
Signed-off-by: Igor V. Kovalenko <igor.v.kovalenko@gmail.com>
--
Kind regards,
Igor V. Kovalenko
Posting updated patch to the list...
>>> On Fri, Apr 24, 2009 at 9:42 PM, Blue Swirl <blauwirbel@gmail.com> wrote:
>>> >
>>> > Nice, though I didn't notice any visible improvement in my tests.
>>>
>>> This early in boot process there is not much to output; and I test
>>> recent kernel which may use different startup sequence.
>>> I modified openbios cif handler to output arguments and I now can see
>>> visible difference.
>>>
>>>
>>> >
>>> > About the patch, there are a few problems:
>>> > - it breaks Sparc32
>>>
>>> You mean it stops working?
>>
>> Does not even build.
Fixed now.
>>> > - commented out code is ugly
>>> > - if and else should be on the same line as '{' or '}'
>>> > - long lines should be wrapped
>>> > - in the line:
>>> > + return (((tag_access_register & 0x1fff)<<48)|(tag_access_register >> 22));
>>> > there should be white space between ) and << and 48.
>>> >
>>>
>>
>> Also the ")|(" in between is crowded.
>>
>> Maybe the coding style does not describe this well enough.
BTW Supplying indent template would be great.
Please see the updated patch qemu-sparc64-tsb-asi-2.patch attached.
--
Kind regards,
Igor V. Kovalenko
This replaces a compile time option for some targets and adds
this feature to targets which did not have a compile time option.
Add monitor command to enable or disable single step mode.
Modify monitor command "info status" to display single step mode.
Signed-off-by: Stefan Weil <weil@mail.berlios.de>
Signed-off-by: Aurelien Jarno <aurelien@aurel32.net>
git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@7004 c046a42c-6fe2-441c-8c8c-71466251a162
and process termination in legacy applications. Try to guess which we want
based on the presence of multiple threads.
Also implement locking when modifying the CPU list.
Signed-off-by: Paul Brook <paul@codesourcery.com>
git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@6735 c046a42c-6fe2-441c-8c8c-71466251a162
Original idea&code by Kevin Wolf, split-up in two patches and added more
archs.
This patch introduces a flag to log CPU resets. Useful for tracing
unexpected resets (such as those triggered by x86 triple faults).
Signed-off-by: Jan Kiszka <jan.kiszka@siemens.com>
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@6452 c046a42c-6fe2-441c-8c8c-71466251a162
These are references to 'loglevel' that aren't on a simple 'if (loglevel &
X) qemu_log()' statement.
Signed-off-by: Eduardo Habkost <ehabkost@redhat.com>
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@6340 c046a42c-6fe2-441c-8c8c-71466251a162
This is a large patch that changes all occurrences of logfile/loglevel
global variables to use the new qemu_log*() macros.
Signed-off-by: Eduardo Habkost <ehabkost@redhat.com>
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@6338 c046a42c-6fe2-441c-8c8c-71466251a162
The attached patch updates the FSF address in the GPL/LGPL boilerplate
in most GPL/LGPLed files, and also in COPYING.LIB.
Signed-off-by: Stuart Brady <stuart.brady@gmail.com>
Signed-off-by: Aurelien Jarno <aurelien@aurel32.net>
git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@6162 c046a42c-6fe2-441c-8c8c-71466251a162
