Commit Graph

152 Commits

Author SHA1 Message Date
Edgar E. Iglesias ef9d48da59 microblaze: Add support for fcmp.un
Signed-off-by: Edgar E. Iglesias <edgar.iglesias@petalogix.com>
2010-09-09 22:05:48 +02:00
Edgar E. Iglesias 97694c57d7 microblaze: Add basic FPU emulation
Missing:
* fcmp.un insn
* Denormalized exceptions
* Exception model is not accurate

Signed-off-by: Edgar E. Iglesias <edgar.iglesias@petalogix.com>
2010-09-09 10:20:17 +02:00
Edgar E. Iglesias bdc0bf29c6 microblaze: Add definitions for FSR reg fields
Signed-off-by: Edgar E. Iglesias <edgar.iglesias@petalogix.com>
2010-09-09 09:58:35 +02:00
Edgar E. Iglesias a5efa6441c microblaze: Remove unused members from the disas context
Signed-off-by: Edgar E. Iglesias <edgar.iglesias@petalogix.com>
2010-07-25 00:09:41 +02:00
Edgar E. Iglesias 4b5ef0b50d microblaze: Speed up base + index addressing mode
Speed up reg + reg addressing mode when any of the regs is r0.

Signed-off-by: Edgar E. Iglesias <edgar.iglesias@petalogix.com>
2010-07-24 23:25:49 +02:00
Edgar E. Iglesias b2565c694a microblaze: Use setcond for conditional branches
Use setcond for evaluating the condition for branches.
In the future, we could do better for branches without
delay slots.

Signed-off-by: Edgar E. Iglesias <edgar.iglesias@petalogix.com>
2010-07-24 21:51:51 +02:00
Edgar E. Iglesias 61204ce8ec microblaze: Improve branch with small immediates
Slight improvements of conditional branches with small
immediate offsets.

Signed-off-by: Edgar E. Iglesias <edgar.iglesias@petalogix.com>
2010-07-24 21:24:59 +02:00
Paolo Bonzini a88790a14f remove exec-all.h inclusion from cpu.h
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Blue Swirl <blauwirbel@gmail.com>
2010-07-03 09:48:24 +03:00
Paolo Bonzini 10eb0cc03c move cpu_pc_from_tb to target-*/exec.h
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Blue Swirl <blauwirbel@gmail.com>
2010-07-03 09:48:12 +03:00
Paolo Bonzini 83dae09588 remove unused stuff from */exec.h
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Blue Swirl <blauwirbel@gmail.com>
2010-07-03 06:47:13 +00:00
Edgar E. Iglesias fd1dc85837 microblaze: Make MSR_UM and MSR_VM part of the tb flags
Signed-off-by: Edgar E. Iglesias <edgar.iglesias@petalogix.com>
2010-06-07 11:54:27 +02:00
Edgar E. Iglesias 0d5d469938 microblaze: Update elf machine nums.
189 was allocated in upstream binutils.

0xbaab was the old temporary value. Still used by some tools and the
linux kernel.

I've seen 115 in older gdb versions, but lets ignore that one.

Signed-off-by: Edgar E. Iglesias <edgar.iglesias@gmail.com>
2010-05-19 15:24:17 +02:00
Blue Swirl 183aa45407 microblaze: remove dead assignments, spotted by clang analyzer
Value stored is never read.

Signed-off-by: Blue Swirl <blauwirbel@gmail.com>
2010-04-25 20:00:33 +00:00
Paul Brook d4c430a80f Large page TLB flush
QEMU uses a fixed page size for the CPU TLB.  If the guest uses large
pages then we effectively split these into multiple smaller pages, and
populate the corresponding TLB entries on demand.

When the guest invalidates the TLB by virtual address we must invalidate
all entries covered by the large page.  However the address used to
invalidate the entry may not be present in the QEMU TLB, so we do not
know which regions to clear.

Implementing a full vaiable size TLB is hard and slow, so just keep a
simple address/mask pair to record which addresses may have been mapped by
large pages.  If the guest invalidates this region then flush the
whole TLB.

Signed-off-by: Paul Brook <paul@codesourcery.com>
2010-03-17 02:44:41 +00:00
Paul Brook 3c7b48b74c Target specific usermode cleanup
Disable various target specific code that is only relevant to system emulation.

Signed-off-by: Paul Brook <paul@codesourcery.com>
2010-03-12 18:44:24 +00:00
Paul Brook 4fcc562bff Remove cpu_get_phys_page_debug from userspace emulation
cpu_get_phys_page_debug makes no sense for userspace emulation, so remove it.

Signed-off-by: Paul Brook <paul@codesourcery.com>
2010-03-12 18:34:25 +00:00
Richard Henderson 5270589032 Move TARGET_PHYS_ADDR_SPACE_BITS to target-*/cpu.h.
Removes a set of ifdefs from exec.c.

Introduce TARGET_VIRT_ADDR_SPACE_BITS for all targets other
than Alpha.  This will be used for page_find_alloc, which is
supposed to be using virtual addresses in the first place.

Signed-off-by: Richard Henderson <rth@twiddle.net>
2010-03-12 16:28:24 +00:00
Edgar E. Iglesias ff21f70afd microblaze: Improve brk emulation.
brk insns while in user mode raise priv insn exceptions.
This commit makes gdbserver work on linux guests.

Signed-off-by: Edgar E. Iglesias <edgar.iglesias@petalogix.com>
2010-02-20 14:04:01 +01:00
Edgar E. Iglesias e1aa325409 microblaze: Dont segfault when singlestepping first insn.
Signed-off-by: Edgar E. Iglesias <edgar.iglesias@petalogix.com>
2010-02-20 14:03:14 +01:00
Paolo Bonzini 49a945a3c0 kill regs_to_env and env_to_regs
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
2010-01-19 16:31:02 -06:00
Michal Simek 4c24aa0a69 microblaze: Print content of EAR register
I need to see EAR register in output because I need to parse irqsoff problem.

Signed-off-by: Michal Simek <monstr@monstr.eu>
Signed-off-by: Edgar E. Iglesias <edgar.iglesias@gmail.com>
2009-12-16 12:54:26 +01:00
Edgar E. Iglesias 17c52a43b4 microblaze: Update debug logs.
Signed-off-by: Edgar E. Iglesias <edgar.iglesias@gmail.com>
2009-12-16 12:52:56 +01:00
Edgar E. Iglesias f062a3c793 microblaze: Handle wdc flush and clear.
Signed-off-by: Edgar E. Iglesias <edgar.iglesias@gmail.com>
2009-12-13 09:10:08 +01:00
Paul Hartke 9d2dcce9a3 microblaze: Correct branch to registers.
Signed-off-by: Edgar E. Iglesias <edgar.iglesias@gmail.com>
2009-12-13 03:22:24 +01:00
Edgar E. Iglesias 95b279de95 microblaze: Restore env when raising unmapped bus access.
Signed-off-by: Edgar E. Iglesias <edgar.iglesias@gmail.com>
2009-11-12 02:14:45 +01:00
Edgar E. Iglesias 4898427ec8 microblaze: Unbreak reset.
Initialize synthesis config registers at reset to cope with the new
cpu_reset sequences.

Signed-off-by: Edgar E. Iglesias <edgar.iglesias@gmail.com>
2009-11-12 02:12:44 +01:00
Anthony Liguori c227f0995e Revert "Get rid of _t suffix"
In the very least, a change like this requires discussion on the list.

The naming convention is goofy and it causes a massive merge problem.  Something
like this _must_ be presented on the list first so people can provide input
and cope with it.

This reverts commit 99a0949b72.

Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
2009-10-01 16:12:16 -05:00
malc 99a0949b72 Get rid of _t suffix
Some not so obvious bits, slirp and Xen were left alone for the time
being.

Signed-off-by: malc <av1474@comtv.ru>
2009-10-01 22:45:02 +04:00
Juan Quintela 3897293825 gcc wants 1st static and then const
Signed-off-by: Juan Quintela <quintela@redhat.com>
Signed-off-by: Blue Swirl <blauwirbel@gmail.com>
2009-09-25 19:52:06 +00:00
Blue Swirl 72cf2d4f0e Fix sys-queue.h conflict for good
Problem: Our file sys-queue.h is a copy of the BSD file, but there are
some additions and it's not entirely compatible. Because of that, there have
been conflicts with system headers on BSD systems. Some hacks have been
introduced in the commits 15cc923584,
f40d753718,
96555a96d7 and
3990d09adf but the fixes were fragile.

Solution: Avoid the conflict entirely by renaming the functions and the
file. Revert the previous hacks.

Signed-off-by: Blue Swirl <blauwirbel@gmail.com>
2009-09-12 07:36:22 +00:00
Edgar E. Iglesias 02b33596d0 microblaze: Trap if QEMU finds an unknown insns.
If PVR settings enable illegal insn trap, trap when QEMU finds an
insn it knows nothing about.

Signed-off-by: Edgar E. Iglesias <edgar.iglesias@gmail.com>
2009-09-11 10:38:31 +02:00
Edgar E. Iglesias a12f650781 microblaze: Correct prio between MMU and unaligned exceptions.
The microblaze gives MMU faults priority. For stores we still
have a flaw that the value leaks to memory in the case of an
unaligned exception.

Signed-off-by: Edgar E. Iglesias <edgar.iglesias@gmail.com>
2009-09-11 10:35:27 +02:00
Edgar E. Iglesias 97f90cbfe8 microblaze: HW Exception fixes.
* Correct PVR checks for masking off individual exceptions.
* Correct FPU exception code.
* Set EAR on unaligned and unassigned exceptions.

Signed-off-by: Edgar E. Iglesias <edgar.iglesias@gmail.com>
2009-09-11 10:27:38 +02:00
Edgar E. Iglesias 0187688f32 microblaze: Trap on illegal load/store sizes.
Signed-off-by: Edgar E. Iglesias <edgar.iglesias@gmail.com>
2009-09-04 10:38:59 +02:00
Edgar E. Iglesias 329bfa7739 microblaze: Correct FPU decoding masks.
Signed-off-by: Edgar E. Iglesias <edgar.iglesias@gmail.com>
2009-09-04 09:40:49 +02:00
Edgar E. Iglesias 3aa8098843 microblaze: Compute masks for alignment checks at translation time.
Thanks to Blue Swirl for reporting.
Signed-off-by: Edgar E. Iglesias <edgar.iglesias@gmail.com>
2009-09-03 22:28:21 +02:00
Edgar E. Iglesias faed1c2a23 microblaze: Trap on bus accesses to unmapped areas.
Signed-off-by: Edgar E. Iglesias <edgar.iglesias@gmail.com>
2009-09-03 13:25:09 +02:00
Edgar E. Iglesias 3c50a71fc9 microblaze: MMU shows more respect to synthesis config.
The microblaze MMU can be synthesized in different configurations.
Have the MMU model show more respect to the chosen configuration.

Signed-off-by: Edgar E. Iglesias <edgar.iglesias@gmail.com>
2009-09-03 13:04:02 +02:00
Edgar E. Iglesias 968a40f6fa microblaze: Trap on unaligned data accesses.
Untested...

Signed-off-by: Edgar E. Iglesias <edgar.iglesias@gmail.com>
2009-09-03 12:59:46 +02:00
Edgar E. Iglesias 821ebb33e4 microblaze: Trap on divizions by zero.
Signed-off-by: Edgar E. Iglesias <edgar.iglesias@gmail.com>
2009-09-03 12:52:01 +02:00
Edgar E. Iglesias ee7dbcf834 microblaze: Correct mfs into r0.
Signed-off-by: Edgar E. Iglesias <edgar.iglesias@gmail.com>
2009-09-03 11:18:55 +02:00
Edgar E. Iglesias 1567a00568 microblaze: Catch illegal insns and privilege violations.
Raise illegal instruction exceptions when executing instructions that
require units not available on the particulare microblaze configuration.

Also trap priviliege violations made by userspace.

Signed-off-by: Edgar E. Iglesias <edgar.iglesias@gmail.com>
2009-09-03 11:12:30 +02:00
Edgar E. Iglesias cedb936bfc microblaze: Add infrastructure for supporting hw exceptions.
Signed-off-by: Edgar E. Iglesias <edgar.iglesias@gmail.com>
2009-09-03 10:25:00 +02:00
Edgar E. Iglesias a75cf0c52d microblaze: Clear exception in dslot ESR bit if not in dslot.
Signed-off-by: Edgar E. Iglesias <edgar.iglesias@gmail.com>
2009-09-03 10:15:17 +02:00
Edgar E. Iglesias 21d2063605 microblaze: Correct MMU debug log.
Signed-off-by: Edgar E. Iglesias <edgar.iglesias@gmail.com>
2009-09-03 10:13:08 +02:00
Nathan Froyd 0b5c1ce846 cleanup cpu-exec.c, part 0/N: consolidate handle_cpu_signal
handle_cpu_signal is very nearly copy-paste code for each target, with a
few minor variations.  This patch sets up appropriate defaults for a
generic handle_cpu_signal and provides overrides for particular targets
that did things differently.  Fixing things like the persistent (XXX:
use sigsetjmp) should now become somewhat easier.

Previous comments on this patch suggest that the "activate soft MMU for
this block" comments refer to defunct functionality.  I have removed
such blocks for the appropriate targets in this patch.

Signed-off-by: Nathan Froyd <froydnj@codesourcery.com>
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
2009-08-24 08:21:42 -05:00
Blue Swirl 8167ee8839 Update to a hopefully more future proof FSF address
Signed-off-by: Blue Swirl <blauwirbel@gmail.com>
2009-07-16 20:47:01 +00:00
Edgar E. Iglesias d0f3654f83 microblaze: Make writes to MMU_ZPR flush the TLB.
Signed-off-by: Edgar E. Iglesias <edgar.iglesias@gmail.com>
2009-05-27 01:19:58 +02:00
Edgar E. Iglesias 6b2fce907d microblaze: Correct typo.
Signed-off-by: Edgar E. Iglesias <edgar.iglesias@gmail.com>
2009-05-27 01:10:26 +02:00
Edgar E. Iglesias 6a8b1ae202 microblaze: Add petalogix s3a1800dsp MMU linux ref-design.
This setup was designed by petalogix and is supported by upstream linux.
The design targets a xilinx spartan-3a-1800 dsp board with MMU.

Signed-off-by: Edgar E. Iglesias <edgar.iglesias@gmail.com>
2009-05-26 21:10:56 +02:00
Edgar E. Iglesias afeeceb0d7 microblaze: Add MMU emulation.
Signed-off-by: Edgar E. Iglesias <edgar.iglesias@gmail.com>
2009-05-26 21:10:34 +02:00
Edgar E. Iglesias 4acb54baa6 microblaze: Add translation routines.
Signed-off-by: Edgar E. Iglesias <edgar.iglesias@gmail.com>
2009-05-26 21:10:11 +02:00