Commit Graph

581 Commits

Author SHA1 Message Date
Max Filippov
8128b3e079 target/xtensa: support output to chardev console
In semihosting mode QEMU allows guest to read and write host file
descriptors directly, including descriptors 0..2, a.k.a. stdin, stdout
and stderr. Sometimes it's desirable to have semihosting console
controlled by -serial option, e.g. to connect it to network.

Add semihosting console to xtensa-semi.c, open it in the 'sim' machine
in the presence of -serial option and direct stdout and stderr to it
when it's present.

Signed-off-by: Max Filippov <jcmvbkbc@gmail.com>
2017-06-06 02:40:48 -07:00
Max Filippov
347ec03093 target/xtensa: fix return value of read/write simcalls
Return value of read/write simcalls is not calculated correctly in case
of operations crossing page boundary and in case of short reads/writes.
Read and write simcalls should return the size of data actually
read/written or -1 in case of error.

Cc: qemu-stable@nongnu.org
Signed-off-by: Max Filippov <jcmvbkbc@gmail.com>
2017-06-06 02:34:04 -07:00
Max Filippov
30c2afd151 target/xtensa: fix mapping direction in read/write simcalls
Read and write simcalls map physical memory to access I/O buffers, but
'read' simcall need to map it for writing and 'write' simcall need to
map it for reading, i.e. the opposite of what they do now. Fix that.

Cc: qemu-stable@nongnu.org
Signed-off-by: Max Filippov <jcmvbkbc@gmail.com>
2017-06-06 02:34:04 -07:00
Richard Henderson
2d826cdc8a target/alpha: Use goto_tb for fallthru between TBs
Signed-off-by: Richard Henderson <rth@twiddle.net>
2017-06-05 09:25:42 -07:00
Richard Henderson
bec5e2b975 target/alpha: Implement WTINT inline
Signed-off-by: Richard Henderson <rth@twiddle.net>
2017-06-05 09:25:42 -07:00
Aurelien Jarno
e350d8ca3a target/mips: optimize indirect branches
Cc: Yongbok Kim <yongbok.kim@imgtec.com>
Signed-off-by: Aurelien Jarno <aurelien@aurel32.net>
Message-Id: <20170430145254.25616-4-aurelien@aurel32.net>
Signed-off-by: Richard Henderson <rth@twiddle.net>
2017-06-05 09:25:42 -07:00
Aurelien Jarno
d9a9acde64 target/mips: optimize cross-page direct jumps in softmmu
Cc: Yongbok Kim <yongbok.kim@imgtec.com>
Signed-off-by: Aurelien Jarno <aurelien@aurel32.net>
Message-Id: <20170430145254.25616-3-aurelien@aurel32.net>
Signed-off-by: Richard Henderson <rth@twiddle.net>
2017-06-05 09:25:42 -07:00
Emilio G. Cota
e75449a346 target/aarch64: optimize indirect branches
Measurements:

[Baseline performance is that before applying this and the previous commit]

-                                    NBench, aarch64-softmmu. Host: Intel i7-4790K @ 4.00GHz

 1.7x +-+--------------------------------------------------------------------------------------------------------------+-+
      |                                                                                                                  |
      |   cross                                                                                                          |
 1.6x +cross+jr.................................................####...................................................+-+
      |                                                         #++#                                                     |
      |                                                         #  #                                                     |
 1.5x +-+...................................................*****..#...................................................+-+
      |                                                     *+++*  #                                                     |
      |                                                     *   *  #                                                     |
 1.4x +-+...................................................*...*..#...................................................+-+
      |                                                     *   *  #                                                     |
      |                                     #####           *   *  #                                                     |
 1.3x +-+................................****+++#...........*...*..#...................................................+-+
      |                                  *++*   #           *   *  #                                                     |
      |                                  *  *   #           *   *  #                                                     |
 1.2x +-+................................*..*...#...........*...*..#...................................................+-+
      |                                  *  *   #           *   *  #                                                     |
      |                            ####  *  *   #           *   *  #                                                     |
 1.1x +-+.......................+++#..#..*..*...#...........*...*..#...................................................+-+
      |                         ****  #  *  *   #           *   *  #                                        ****####     |
      |                         *  *  #  *  *   #           *   *  #  ****###   +++####            ****###  *  *   #     |
   1x +-++-++++++-++++****###++-*++*++#++*++*+-+#++****+++++*+++*++#++*++*-+#++*****++#++****###-++*++*-+#++*+-*+++#+-++-+
      |     *****###  *  *  #   *  *  #  *  *   #  *++*###  *   *  #  *  *  #  *   *  #  *  *++#   *  *  #  *  *   #     |
      |     *   *++#  *  *  #   *  *  #  *  *   #  *  *  #  *   *  #  *  *  #  *   *  #  *  *  #   *  *  #  *  *   #     |
 0.9x +-+---*****###--****###---****###--****####--****###--*****###--****###--*****###--****###---****###--****####---+-+
      ASSIGNMENT BITFIELD   FOURFP EMULATION   HUFFMAN   LU DECOMPOSITIONNEURAL NUMERIC SORSTRING SORT    hmean
  png: http://imgur.com/qO9ubtk
NB. cross here represents the previous commit.

-                            SPECint06 (test set), aarch64-linux-user. Host: Intel i7-4790K @ 4.00GHz

 1.5x +-+--------------------------------------------------------------------------------------------------------------+-+
      |                                                                       *****                                      |
      |                                                                       *+++*                           jr         |
      |                                                                       *   *                                      |
 1.4x +-+.....................................................................*...*.....................+++............+-+
      |                                                                       *   *                      |               |
      |                                      *****                            *   *                      |               |
      |                                      *   *                            *   *                    *****             |
 1.3x +-+....................................*...*............................*...*....................*.|.*...........+-+
      |                       +++            *   *                            *   *                    * | *             |
      |                      *****           *   *                            *   *                    *+++*             |
      |                      *   *           *   *                            *   *                    *   *             |
 1.2x +-+....................*...*...........*...*............................*...*...........*****....*...*...........+-+
      |     *****            *   *           *   *                            *   *           *   *    *   *    +++      |
      |     *   *            *   *           *   *                            *   *           *   *    *   *   *****     |
      |     *   *            *   *   *****   *   *                            *   *           *   *    *   *   *   *     |
 1.1x +-+...*...*............*...*...*...*...*...*............................*...*....+++....*...*....*...*...*...*...+-+
      |     *   *            *   *   *   *   *   *                            *   *   *****   *   *    *   *   *   *     |
      |     *   *            *   *   *   *   *   *   *****                    *   *   *   *   *   *    *   *   *   *     |
      |     *   *   *****    *   *   *   *   *   *   *   *   ******           *   *   *   *   *   *    *   *   *   *     |
   1x +-++-+*+++*-++*+++*++++*+-+*+++*-++*+++*-++*+++*+++*++-*++++*-++*****+++*++-*+++*++-*+++*+-+*++++*+++*++-*+++*+-++-+
      |     *   *   *   *    *   *   *   *   *   *   *   *   *    *   *+++*   *   *   *   *   *   *    *   *   *   *     |
      |     *   *   *   *    *   *   *   *   *   *   *   *   *    *   *   *   *   *   *   *   *   *    *   *   *   *     |
      |     *   *   *   *    *   *   *   *   *   *   *   *   *    *   *   *   *   *   *   *   *   *    *   *   *   *     |
 0.9x +-+---*****---*****----*****---*****---*****---*****---******---*****---*****---*****---*****----*****---*****---+-+
         astar   bzip2      gcc   gobmk h264ref   hmmlibquantum      mcf omnetpperlbench   sjengxalancbmk   hmean
  png: http://imgur.com/3Dp4vvq

-                           SPECint06 (train set), aarch64-linux-user. Host: Intel i7-4790K @ 4.00GHz

 1.7x +-+--------------------------------------------------------------------------------------------------------------+-+
      |                                                                                                                  |
      |                                                                                                       jr         |
 1.6x +-+...............................................................................................+++............+-+
      |                                                                                                *****             |
      |                                                                                                *+++*             |
      |                                                                                                *   *             |
 1.5x +-+..............................................................................................*...*...........+-+
      |                                                                        +++                     *   *             |
      |                                                                       *****                    *   *             |
 1.4x +-+.....................................................................*+++*....................*...*...........+-+
      |                                                                       *   *                    *   *             |
      |                                      *****                            *   *                    *   *             |
      |                                      *   *                            *   *   *****            *   *             |
 1.3x +-+....................................*...*............................*...*...*...*............*...*...........+-+
      |                       +++            *   *                            *   *   *   *            *   *             |
      |                      *****           *   *                            *   *   *   *   *****    *   *             |
 1.2x +-+....................*...*...........*...*............................*...*...*...*...*+++*....*...*...*****...+-+
      |                      *   *           *   *                            *   *   *   *   *   *    *   *   *+++*     |
      |     *****            *   *   *****   *   *                            *   *   *   *   *   *    *   *   *   *     |
      |     *   *            *   *   *+++*   *   *                            *   *   *   *   *   *    *   *   *   *     |
 1.1x +-+...*...*............*...*...*...*...*...*............................*...*...*...*...*...*....*...*...*...*...+-+
      |     *   *   *****    *   *   *   *   *   *                    *****   *   *   *   *   *   *    *   *   *   *     |
      |     *   *   *   *    *   *   *   *   *   *    +++    ******   *+++*   *   *   *   *   *   *    *   *   *   *     |
   1x +-+---*****---*****----*****---*****---*****---*****---******---*****---*****---*****---*****----*****---*****---+-+
         astar   bzip2      gcc   gobmk h264ref   hmmlibquantum      mcf omnetpperlbench   sjengxalancbmk   hmean
  png: http://imgur.com/vRrdc9j

Signed-off-by: Emilio G. Cota <cota@braap.org>
Signed-off-by: Richard Henderson <rth@twiddle.net>
2017-06-05 09:25:42 -07:00
Emilio G. Cota
e78722368c target/aarch64: optimize cross-page direct jumps in softmmu
Perf numbers in next commit's log.

Signed-off-by: Emilio G. Cota <cota@braap.org>
Signed-off-by: Richard Henderson <rth@twiddle.net>
2017-06-05 09:25:42 -07:00
Richard Henderson
4137cb83fa target/hppa: Use tcg_gen_lookup_and_goto_ptr
Signed-off-by: Richard Henderson <rth@twiddle.net>
2017-06-05 09:25:42 -07:00
Richard Henderson
6350001e83 target/s390: Use tcg_gen_lookup_and_goto_ptr
Tested-by: Aurelien Jarno <aurelien@aurel32.net>
Reviewed-by: Aurelien Jarno <aurelien@aurel32.net>
Signed-off-by: Richard Henderson <rth@twiddle.net>
2017-06-05 09:25:42 -07:00
Emilio G. Cota
b4aa297781 target/i386: optimize indirect branches
Speed up indirect branches by jumping to the target if it is valid.

Softmmu measurements (see later commit for user-mode numbers):

Note: baseline (i.e. speedup == 1x) is QEMU v2.9.0.

-                  SPECint06 (test set), x86_64-softmmu (Ubuntu 16.04 guest). Host: Intel i7-4790K @ 4.00GHz

 2.4x +-+--------------------------------------------------------------------------------------------------------------+-+
      |                                                                                                                  |
      |   cross                                                                                                          |
 2.2x +cross+jr..........................................................................+++...........................+-+
      |                                                                                   |                              |
      |                                                                               +++ |                              |
   2x +-+..............................................................................|..|............................+-+
      |                                                                                |  |                              |
      |                                                                                |  |                              |
 1.8x +-+..............................................................................|####...........................+-+
      |                                                                                |# |#                             |
      |                                                                              **** |#                             |
 1.6x +-+............................................................................*.|*.|#...........................+-+
      |                                                                              * |* |#                             |
      |                                                                              * |* |#                             |
 1.4x +-+.......................................................................+++..*.|*.|#...........................+-+
      |                                                      ++++++             #### * |*++#             +++             |
      |                        +++                            |  |              #++# *++*  #          +++ |              |
 1.2x +-+......................###.....####....+++............|..|...........****..#.*..*..#....####...|.###.....####..+-+
      |        +++          **** #  ****  #    ####          ***###          *++*  # *  *  #    #++#  ****|#  +++#++#    |
      |    ****###     +++  *++* #  *++*  #  ++#  #    ####  *|* |#     +++  *  *  # *  *  #  ***  #  *| *|#  ****  #    |
   1x +-++-*++*++#++***###++*++*+#++*+-*++#+****++#++***++#+-*+*++#-+****##++*++*-+#+*++*-+#++*+*++#++*-+*+#++*++*++#-++-+
      |    *  *  #  * *  #  *  * #  *  *  # *  *  #  * *  #  *|* |#  *++* #  *  *  # *  *  #  * *  #  *  * #  *  *  #    |
      |    *  *  #  * *  #  *  * #  *  *  # *  *  #  * *  #  *+*++#  *  * #  *  *  # *  *  #  * *  #  *  * #  *  *  #    |
 0.8x +-+--****###--***###--****##--****###-****###--***###--***###--****##--****###-****###--***###--****##--****###--+-+
         astar   bzip2      gcc   gobmk h264ref   hmmlibquantum      mcf omnetpperlbench   sjengxalancbmk   hmean
  png: http://imgur.com/DU36YFU

NB. 'cross' represents the previous commit.

Reviewed-by: Alex Bennée <alex.bennee@linaro.org>
Reviewed-by: Richard Henderson <rth@twiddle.net>
Signed-off-by: Emilio G. Cota <cota@braap.org>
Message-Id: <1493263764-18657-11-git-send-email-cota@braap.org>
Signed-off-by: Richard Henderson <rth@twiddle.net>
2017-06-05 09:25:42 -07:00
Emilio G. Cota
fe62089563 target/i386: optimize cross-page direct jumps in softmmu
Instead of unconditionally exiting to the exec loop, use the
gen_jr helper to jump to the target if it is valid.

Perf impact: see next commit's log.

Reviewed-by: Richard Henderson <rth@twiddle.net>
Signed-off-by: Emilio G. Cota <cota@braap.org>
Message-Id: <1493263764-18657-10-git-send-email-cota@braap.org>
Signed-off-by: Richard Henderson <rth@twiddle.net>
2017-06-05 09:25:42 -07:00
Emilio G. Cota
1ebb1af1b8 target/i386: introduce gen_jr helper to generate lookup_and_goto_ptr
This helper will be used by subsequent changes.

Reviewed-by: Alex Bennée <alex.bennee@linaro.org>
Signed-off-by: Emilio G. Cota <cota@braap.org>
Message-Id: <1493263764-18657-9-git-send-email-cota@braap.org>
Signed-off-by: Richard Henderson <rth@twiddle.net>
2017-06-05 09:25:42 -07:00
Emilio G. Cota
8a6b28c7b5 target/arm: optimize indirect branches
Speed up indirect branches by jumping to the target if it is valid.

Softmmu measurements (see later commit for user-mode results):

Note: baseline (i.e. speedup == 1x) is QEMU v2.9.0.

- Impact on Boot time

| setup  | ARM debian jessie boot+shutdown time | stddev |
|--------+--------------------------------------+--------|
| v2.9.0 |                                 8.84 |   0.07 |
| +cross |                                 8.85 |   0.03 |
| +jr    |                                 8.83 |   0.06 |

-                            NBench, arm-softmmu (debian jessie guest). Host: Intel i7-4790K @ 4.00GHz

  1.3x +-+-------------------------------------------------------------------------------------------------------------+-+
       |                                                                                                                 |
       |   cross                                                          ####                                           |
 1.25x +cross+jr..........................................................#++#.........................................+-+
       |                                                        ####      #  #                                           |
       |                                                     +++#  #      #  #                                           |
       |                                      +++            ****  #      #  #                                           |
  1.2x +-+...................................####............*..*..#......#..#.........................................+-+
       |                                  ****  #            *  *  #      #  #     ####                                  |
       |                                  *  *  #            *  *  #      #  #     #  #                                  |
 1.15x +-+................................*..*..#............*..*..#......#..#.....#..#................................+-+
       |                                  *  *  #            *  *  #      #  #     #  #                                  |
       |                                  *  *  #      ####  *  *  #      #  #     #  #                                  |
       |                                  *  *  #      #  #  *  *  #      #  #     #  #                         ####     |
  1.1x +-+................................*..*..#......#..#..*..*..#......#..#.....#..#.........................#..#...+-+
       |                                  *  *  #      #  #  *  *  #      #  #     #  #                         #  #     |
       |                                  *  *  #      #  #  *  *  #      #  #     #  #                         #  #     |
 1.05x +-+..........................####..*..*..#......#..#..*..*..#......#..#.....#..#......+++............*****..#...+-+
       |                        *****  #  *  *  #      #  #  *  *  #  *****  #     #  #   +++ |    ****###  *   *  #     |
       |                        *+++*  #  *  *  #      #  #  *  *  #  *+++*  #  ****  #  *****###  *  *  #  *   *  #     |
       |     *****###  +++####  *   *  #  *  *  #  *****  #  *  *  #  *   *  #  *  *  #  * | *++#  *  *  #  *   *  #     |
    1x +-++-+*+++*-+#++****++#++*+-+*++#+-*++*++#-+*+++*-+#++*++*++#++*+-+*++#+-*++*++#-+*+++*-+#++*++*++#++*+-+*++#+-++-+
       |     *   *  #  *  *  #  *   *  #  *  *  #  *   *  #  *  *  #  *   *  #  *  *  #  *   *  #  *  *  #  *   *  #     |
       |     *   *  #  *  *  #  *   *  #  *  *  #  *   *  #  *  *  #  *   *  #  *  *  #  *   *  #  *  *  #  *   *  #     |
 0.95x +-+---*****###--****###--*****###--****###--*****###--****###--*****###--****###--*****###--****###--*****###---+-+
       ASSIGNMENT BITFIELD   FOURFP EMULATION   HUFFMAN   LU DECOMPOSITIONEURAL NNUMERIC SOSTRING SORT     hmean
  png: http://imgur.com/eOLmZNR

NB. 'cross' represents the previous commit.

Signed-off-by: Emilio G. Cota <cota@braap.org>
Message-Id: <1493263764-18657-8-git-send-email-cota@braap.org>
[rth: Replace gen_jr global variable with DISAS_EXIT state.]
Signed-off-by: Richard Henderson <rth@twiddle.net>
2017-06-05 09:25:42 -07:00
Emilio G. Cota
7ad55b4ffd target/arm: optimize cross-page direct jumps in softmmu
Instead of unconditionally exiting to the exec loop, use the
lookup_and_goto_ptr helper to jump to the target if it is valid.

Perf impact: see next commit's log.

Reviewed-by: Alex Bennée <alex.bennee@linaro.org>
Reviewed-by: Richard Henderson <rth@twiddle.net>
Signed-off-by: Emilio G. Cota <cota@braap.org>
Message-Id: <1493263764-18657-7-git-send-email-cota@braap.org>
Signed-off-by: Richard Henderson <rth@twiddle.net>
2017-06-05 09:25:42 -07:00
Richard Henderson
1639a965d3 target/nios2: Fix 64-bit ilp32 compilation
Avoid a "cast from pointer to integer of different size" warning
by using the proper host type.

Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Reviewed-by: Alex Bennée <alex.bennee@linaro.org>
Signed-off-by: Richard Henderson <rth@twiddle.net>
2017-06-05 09:25:42 -07:00
Luc MICHEL
95e9a242e2 target/arm: add data cache invalidation cp15 instruction to cortex-r5
The cp15, CRn=15, opc1=0, CRm=5, opc2=0 instruction invalidates all the
data cache on the cortex-r5. Implementing it as a NOP.

Signed-off-by: Luc MICHEL <luc.michel@git.antfield.fr>
Signed-off-by: Michael Tokarev <mjt@tls.msk.ru>
2017-06-04 18:42:55 +03:00
Peter Maydell
d47a851cae migration/next for 20170601
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Merge remote-tracking branch 'remotes/juanquintela/tags/migration/20170601' into staging

migration/next for 20170601

# gpg: Signature made Thu 01 Jun 2017 17:51:04 BST
# gpg:                using RSA key 0xF487EF185872D723
# gpg: Good signature from "Juan Quintela <quintela@redhat.com>"
# gpg:                 aka "Juan Quintela <quintela@trasno.org>"
# Primary key fingerprint: 1899 FF8E DEBF 58CC EE03  4B82 F487 EF18 5872 D723

* remotes/juanquintela/tags/migration/20170601:
  migration: Move include/migration/block.h into migration/
  migration: Export ram.c functions in its own file
  migration: Create include for migration snapshots
  migration: Export rdma.c functions in its own file
  migration: Export tls.c functions in its own file
  migration: Export socket.c functions in its own file
  migration: Export fd.c functions in its own file
  migration: Export exec.c functions in its own file
  migration: Split qemu-file.h
  migration: Remove unneeded includes of migration/vmstate.h
  migration: shut src return path unconditionally
  migration: fix leak of src file on dst
  migration: Remove section_id parameter from vmstate_load
  migration: loadvm handlers are not used
  migration: Use savevm_handlers instead of loadvm copy

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2017-06-02 14:07:53 +01:00
Peter Maydell
3bef701256 arm: Implement HFNMIENA support for M profile MPU
Implement HFNMIENA support for the M profile MPU. This bit controls
whether the MPU is treated as enabled when executing at execution
priorities of less than zero (in NMI, HardFault or with the FAULTMASK
bit set).

Doing this requires us to use a different MMU index for "running
at execution priority < 0", because we will have different
access permissions for that case versus the normal case.

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Message-id: 1493122030-32191-14-git-send-email-peter.maydell@linaro.org
2017-06-02 11:51:49 +01:00
Michael Davidsaver
29c483a506 arm: add MPU support to M profile CPUs
The M series MPU is almost the same as the already implemented R
profile MPU (v7 PMSA).  So all we need to implement here is the MPU
register interface in the system register space.

This implementation has the same restriction as the R profile MPU
that it doesn't permit regions to be sized down smaller than 1K.

We also do not yet implement support for MPU_CTRL.HFNMIENA; this
bit should if zero disable use of the MPU when running HardFault,
NMI or with FAULTMASK set to 1 (ie at an execution priority of
less than zero) -- if the MPU is enabled we don't treat these
cases any differently.

Signed-off-by: Michael Davidsaver <mdavidsaver@gmail.com>
Message-id: 1493122030-32191-13-git-send-email-peter.maydell@linaro.org
[PMM: Keep all the bits in mpu_ctrl field, rather than
 using SCTLR bits for them; drop broken HFNMIENA support;
 various cleanup]
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2017-06-02 11:51:48 +01:00
Michael Davidsaver
5dd0641d23 armv7m: Classify faults as MemManage or BusFault
General logic is that operations stopped by the MPU are MemManage,
and those which go through the MPU and are caught by the unassigned
handle are BusFault. Distinguish these by looking at the
exception.fsr values, and set the CFSR bits and (if appropriate)
fill in the BFAR or MMFAR with the exception address.

Signed-off-by: Michael Davidsaver <mdavidsaver@gmail.com>
Message-id: 1493122030-32191-12-git-send-email-peter.maydell@linaro.org
[PMM: i-side faults do not set BFAR/MMFAR, only d-side;
 added some CPU_LOG_INT logging]
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
2017-06-02 11:51:48 +01:00
Peter Maydell
790a11503c arm: All M profile cores are PMSA
All M profile CPUs are PMSA, so set the feature bit.
(We haven't actually implemented the M profile MPU register
interface yet, but setting this feature bit gives us closer
to correct behaviour for the MPU-disabled case.)

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Message-id: 1493122030-32191-11-git-send-email-peter.maydell@linaro.org
2017-06-02 11:51:48 +01:00
Michael Davidsaver
3a00d560bc armv7m: Implement M profile default memory map
Add support for the M profile default memory map which is used
if the MPU is not present or disabled.

The main differences in behaviour from implementing this
correctly are that we set the PAGE_EXEC attribute on
the right regions of memory, such that device regions
are not executable.

Signed-off-by: Michael Davidsaver <mdavidsaver@gmail.com>
Message-id: 1493122030-32191-10-git-send-email-peter.maydell@linaro.org
[PMM: rephrased comment and commit message; don't mark
 the flash memory region as not-writable; list all
 the cases in the default map explicitly rather than
 using a 'default' case for the non-executable regions]
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2017-06-02 11:51:48 +01:00
Michael Davidsaver
c9f9f1246d armv7m: Improve "-d mmu" tracing for PMSAv7 MPU
Improve the "-d mmu" tracing for the PMSAv7 MPU translation
process as an aid in debugging guest MPU configurations:
 * fix a missing newline for a guest-error log
 * report the region number with guest-error or unimp
   logs of bad region register values
 * add a log message for the overall result of the lookup
 * print "0x" prefix for hex values

Signed-off-by: Michael Davidsaver <mdavidsaver@gmail.com>
Reviewed-by: Alistair Francis <alistair.francis@xilinx.com>
Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Message-id: 1493122030-32191-9-git-send-email-peter.maydell@linaro.org
[PMM: a little tidyup, report region number in all messages
 rather than just one]
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2017-06-02 11:51:48 +01:00
Peter Maydell
e9235c6983 arm: Remove unnecessary check on cpu->pmsav7_dregion
Now that we enforce both:
 * pmsav7_dregion == 0 implies has_mpu == false
 * PMSA with has_mpu == false means SCTLR.M cannot be set
we can remove a check on pmsav7_dregion from get_phys_addr_pmsav7(),
because we can only reach this code path if the MPU is enabled
(and so region_translation_disabled() returned false).

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Message-id: 1493122030-32191-8-git-send-email-peter.maydell@linaro.org
2017-06-02 11:51:48 +01:00
Peter Maydell
06312febfb arm: Don't let no-MPU PMSA cores write to SCTLR.M
If the CPU is a PMSA config with no MPU implemented, then the
SCTLR.M bit should be RAZ/WI, so that the guest can never
turn on the non-existent MPU.

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Alistair Francis <alistair.francis@xilinx.com>
Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Message-id: 1493122030-32191-7-git-send-email-peter.maydell@linaro.org
2017-06-02 11:51:48 +01:00
Peter Maydell
f50cd31413 arm: Don't clear ARM_FEATURE_PMSA for no-mpu configs
Fix the handling of QOM properties for PMSA CPUs with no MPU:

Allow no-MPU to be specified by either:
 * has-mpu = false
 * pmsav7_dregion = 0
and make setting one imply the other. Don't clear the PMSA
feature bit in this situation.

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Alistair Francis <alistair.francis@xilinx.com>
Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Message-id: 1493122030-32191-6-git-send-email-peter.maydell@linaro.org
2017-06-02 11:51:47 +01:00
Peter Maydell
452a095526 arm: Clean up handling of no-MPU PMSA CPUs
ARM CPUs come in two flavours:
 * proper MMU ("VMSA")
 * only an MPU ("PMSA")
For PMSA, the MPU may be implemented, or not (in which case there
is default "always acts the same" behaviour, but it isn't guest
programmable).

QEMU is a bit confused about how we indicate this: we have an
ARM_FEATURE_MPU, but it's not clear whether this indicates
"PMSA, not VMSA" or "PMSA and MPU present" , and sometimes we
use it for one purpose and sometimes the other.

Currently trying to implement a PMSA-without-MPU core won't
work correctly because we turn off the ARM_FEATURE_MPU bit
and then a lot of things which should still exist get
turned off too.

As the first step in cleaning this up, rename the feature
bit to ARM_FEATURE_PMSA, which indicates a PMSA CPU (with
or without MPU).

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Alistair Francis <alistair.francis@xilinx.com>
Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Message-id: 1493122030-32191-5-git-send-email-peter.maydell@linaro.org
2017-06-02 11:51:47 +01:00
Peter Maydell
e7b921c2d9 arm: Use different ARMMMUIdx values for M profile
Make M profile use completely separate ARMMMUIdx values from
those that A profile CPUs use. This is a prelude to adding
support for the MPU and for v8M, which together will require
6 MMU indexes which don't map cleanly onto the A profile
uses:
 non secure User
 non secure Privileged
 non secure Privileged, execution priority < 0
 secure User
 secure Privileged
 secure Privileged, execution priority < 0

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Message-id: 1493122030-32191-4-git-send-email-peter.maydell@linaro.org
2017-06-02 11:51:47 +01:00
Peter Maydell
8bd5c82030 arm: Add support for M profile CPUs having different MMU index semantics
The M profile CPU's MPU has an awkward corner case which we
would like to implement with a different MMU index.

We can avoid having to bump the number of MMU modes ARM
uses, because some of our existing MMU indexes are only
used by non-M-profile CPUs, so we can borrow one.
To avoid that getting too confusing, clean up the code
to try to keep the two meanings of the index separate.

Instead of ARMMMUIdx enum values being identical to core QEMU
MMU index values, they are now the core index values with some
high bits set. Any particular CPU always uses the same high
bits (so eventually A profile cores and M profile cores will
use different bits). New functions arm_to_core_mmu_idx()
and core_to_arm_mmu_idx() convert between the two.

In general core index values are stored in 'int' types, and
ARM values are stored in ARMMMUIdx types.

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Message-id: 1493122030-32191-3-git-send-email-peter.maydell@linaro.org
2017-06-02 11:51:47 +01:00
Peter Maydell
e517d95b63 arm: Use the mmu_idx we're passed in arm_cpu_do_unaligned_access()
When identifying the DFSR format for an alignment fault, use
the mmu index that we are passed, rather than calling cpu_mmu_index()
to get the mmu index for the current CPU state. This doesn't actually
make any difference since the only cases where the current MMU index
differs from the index used for the load are the "unprivileged
load/store" instructions, and in that case the mmu index may
differ but the translation regime is the same (apart from the
"use from Hyp mode" case which is UNPREDICTABLE).
However it's the more logical thing to do.

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Alistair Francis <alistair.francis@xilinx.com>
Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Message-id: 1493122030-32191-2-git-send-email-peter.maydell@linaro.org
2017-06-02 11:51:47 +01:00
Wei Huang
2b3ffa9292 target/arm: clear PMUVER field of AA64DFR0 when vPMU=off
The PMUv3 driver of linux kernel (in arch/arm64/kernel/perf_event.c)
relies on the PMUVER field of id_aa64dfr0_el1 to decide if PMU support
is present or not. This patch clears the PMUVER field under TCG mode
when vPMU=off. Without it, PMUv3 will init insider guest VMs even
with vPMU=off. This patch also removes a redundant line inside the
if-statement.

Signed-off-by: Wei Huang <wei@redhat.com>
Message-id: 1495123889-32301-1-git-send-email-wei@redhat.com
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2017-06-02 11:51:47 +01:00
Juan Quintela
107da9acb5 migration: Remove unneeded includes of migration/vmstate.h
Signed-off-by: Juan Quintela <quintela@redhat.com>
Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Reviewed-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
2017-06-01 18:49:22 +02:00
Aurelien Jarno
be53081a61 target/sh4: fix RTE instruction delay slot
The ReTurn from Exception (RTE) instruction loads the system register
(SR) with the saved system register (SSR). It has a delay slot, and
behaves specially according to the SH4 manual:

  The SR value accessed by the instruction in the RTE delay slot is the
  value restored from SSR by the RTE instruction. The SR and MD values
  defined prior to RTE execution are used to fetch the instruction in
  the RTE delay slot.

The instruction in the delay slot being often a NOP, it doesn't cause
any issue most of the time except in some rare cases where the NOP is
being splitted in a different TB (for example when the TCG op buffer
is full). In that case the NOP is fetched with the user permissions
and causes an instruction TLB protection violation exception.

This patches fixes that by introducing a new delay slot flag for the
RTE instruction. Given it's a privileged instruction, the RTE delay
slot instruction is always fetched in privileged mode. It is therefore
enough to to check for this flag in cpu_mmu_index.

Reviewed-by: Richard Henderson <rth@twiddle.net>
Signed-off-by: Aurelien Jarno <aurelien@aurel32.net>
2017-05-30 21:00:56 +02:00
Aurelien Jarno
5c6f3eb7db target/sh4: ignore interrupts in a delay slot
Delay slots are indivisible, therefore avoid scheduling an interrupt in
the delay slot. However exceptions are possible.

Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Reviewed-by: Richard Henderson <rth@twiddle.net>
Signed-off-by: Aurelien Jarno <aurelien@aurel32.net>
2017-05-30 21:00:56 +02:00
Aurelien Jarno
9a562ae7ba target/sh4: introduce DELAY_SLOT_MASK
This will make easier the introduction of a new flag in the next
patches.

Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Reviewed-by: Richard Henderson <rth@twiddle.net>
Signed-off-by: Aurelien Jarno <aurelien@aurel32.net>
2017-05-30 21:00:56 +02:00
Aurelien Jarno
73479c5c87 target/sh4: fix reset when using a kernel and an initrd
When a masked exception happens, the SH4 CPU generates a non-masked
reset exception, which then jumps to the reset vector at address
0xA0000000. While this is emulated correctly in QEMU, this does not
work when using a kernel and initrd as this address then contain an
illegal instruction (and there is no guarantee the kernel and initrd
haven't been overwritten).

Therefore call qemu_system_reset_request to reload the kernel and initrd
and load the program counter to the kernel entry point.

Reviewed-by: Richard Henderson <rth@twiddle.net>
Signed-off-by: Aurelien Jarno <aurelien@aurel32.net>
2017-05-30 21:00:56 +02:00
Aurelien Jarno
324189babb target/sh4: log unauthorized accesses using qemu_log_mask
qemu_log_mask() is preferred over fprintf() for logging errors.

Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Reviewed-by: Richard Henderson <rth@twiddle.net>
Signed-off-by: Aurelien Jarno <aurelien@aurel32.net>
2017-05-30 18:28:00 +02:00
Stefan Hajnoczi
5bb0d22cb4 ppc patch queue 2017-05-25
Assorted accumulated patches.  These are nearly all bugfixes at one
 level or another - some for longstanding problems, others for some
 regressions caused by more recent cleanups.
 
 This includes preliminary patches towards fixing migration for Radix
 Page Table guests under POWER9 and also fixing some migration
 regressions due to the re-organization of the interrupt controller
 code.  Not all the pieces are there yet, so those still won't quite
 work, but the preliminary changes make sense on their own.
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Merge remote-tracking branch 'dgibson/tags/ppc-for-2.10-20170525' into staging

ppc patch queue 2017-05-25

Assorted accumulated patches.  These are nearly all bugfixes at one
level or another - some for longstanding problems, others for some
regressions caused by more recent cleanups.

This includes preliminary patches towards fixing migration for Radix
Page Table guests under POWER9 and also fixing some migration
regressions due to the re-organization of the interrupt controller
code.  Not all the pieces are there yet, so those still won't quite
work, but the preliminary changes make sense on their own.

# gpg: Signature made Thu 25 May 2017 04:50:00 AM BST
# gpg:                using RSA key 0x6C38CACA20D9B392
# gpg: Good signature from "David Gibson <david@gibson.dropbear.id.au>"
# gpg:                 aka "David Gibson (kernel.org) <dwg@kernel.org>"
# gpg:                 aka "David Gibson (Red Hat) <dgibson@redhat.com>"
# gpg:                 aka "David Gibson (ozlabs.org) <dgibson@ozlabs.org>"
# Primary key fingerprint: 75F4 6586 AE61 A66C C44E  87DC 6C38 CACA 20D9 B392

* dgibson/tags/ppc-for-2.10-20170525:
  xics: add unrealize handler
  hw/ppc/spapr.c: recover pending LMB unplug info in spapr_lmb_release
  hw/ppc: migrating the DRC state of hotplugged devices
  hw/ppc: removing drc->detach_cb and drc->detach_cb_opaque
  hw/ppc/spapr.c: adding pending_dimm_unplugs to sPAPRMachineState
  spapr: add pre_plug function for memory
  pseries: Restore support for total vcpus not a multiple of threads-per-core for old machine types
  pseries: Split CAS PVR negotiation out into a separate function
  spapr: fix error reporting in xics_system_init()
  spapr_cpu_core: drop reference on ICP object during CPU realization
  hw/ppc/spapr_events.c: removing 'exception' from sPAPREventLogEntry
  spapr: ensure core_slot isn't NULL in spapr_core_unplug()
  xics_kvm: cache already enabled vCPU ids
  spapr: Consolidate HPT freeing code into a routine
  spapr-cpu-core: release ICP object when realization fails
  spapr: sanitize error handling in spapr_ics_create()
  ppc/xics: simplify prototype of xics_spapr_init()
  target/ppc: reset reservation in do_rfi()

Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
2017-05-30 09:44:58 +01:00
Stefan Hajnoczi
d0eda02938 QAPI patches for 2017-05-23
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Merge remote-tracking branch 'armbru/tags/pull-qapi-2017-05-23' into staging

QAPI patches for 2017-05-23

# gpg: Signature made Tue 23 May 2017 12:33:32 PM BST
# gpg:                using RSA key 0x3870B400EB918653
# gpg: Good signature from "Markus Armbruster <armbru@redhat.com>"
# gpg:                 aka "Markus Armbruster <armbru@pond.sub.org>"
# Primary key fingerprint: 354B C8B3 D7EB 2A6B 6867  4E5F 3870 B400 EB91 8653

* armbru/tags/pull-qapi-2017-05-23:
  qapi-schema: Remove obsolete note from ObjectTypeInfo
  block: Use QDict helpers for --force-share
  shutdown: Expose bool cause in SHUTDOWN and RESET events
  shutdown: Add source information to SHUTDOWN and RESET
  shutdown: Preserve shutdown cause through replay
  shutdown: Prepare for use of an enum in reset/shutdown_request
  shutdown: Simplify shutdown_signal
  sockets: Plug memory leak in socket_address_flatten()
  scripts/qmp/qom-set: fix the value argument passed to srv.command()

Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
2017-05-30 09:33:40 +01:00
Nikunj A Dadhania
a8b7373421 target/ppc: reset reservation in do_rfi()
For transitioning back to userspace after the interrupt.

Suggested-by: Richard Henderson <rth@twiddle.net>
Signed-off-by: Nikunj A Dadhania <nikunj@linux.vnet.ibm.com>
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
2017-05-24 11:39:52 +10:00
Eric Blake
cf83f14005 shutdown: Add source information to SHUTDOWN and RESET
Time to wire up all the call sites that request a shutdown or
reset to use the enum added in the previous patch.

It would have been less churn to keep the common case with no
arguments as meaning guest-triggered, and only modified the
host-triggered code paths, via a wrapper function, but then we'd
still have to audit that I didn't miss any host-triggered spots;
changing the signature forces us to double-check that I correctly
categorized all callers.

Since command line options can change whether a guest reset request
causes an actual reset vs. a shutdown, it's easy to also add the
information to reset requests.

Signed-off-by: Eric Blake <eblake@redhat.com>
Acked-by: David Gibson <david@gibson.dropbear.id.au> [ppc parts]
Reviewed-by: Mark Cave-Ayland <mark.cave-ayland@ilande.co.uk> [SPARC part]
Reviewed-by: Cornelia Huck <cornelia.huck@de.ibm.com> [s390x parts]
Message-Id: <20170515214114.15442-5-eblake@redhat.com>
Reviewed-by: Markus Armbruster <armbru@redhat.com>
Signed-off-by: Markus Armbruster <armbru@redhat.com>
2017-05-23 13:28:17 +02:00
Christian Borntraeger
cb4f4bc353 s390/kvm: do not reset riccb on initial cpu reset
The riccb is kept unchanged during initial cpu reset. Move the data
structure to the other registers that are unchanged.

Signed-off-by: Christian Borntraeger <borntraeger@de.ibm.com>
Signed-off-by: Cornelia Huck <cornelia.huck@de.ibm.com>
2017-05-19 12:31:28 +02:00
Xiao Feng Ren
bab482d740 s390x/css: ccw translation infrastructure
Implement a basic infrastructure of handling channel I/O instruction
interception for passed through subchannels:
1. Branch the code path of instruction interception handling by
   SubChannel type.
2. For a passed-through subchannel, issue the ORB to kernel to do ccw
   translation and perform an I/O operation.
3. Assign different condition code based on the I/O result, or
   trigger a program check.

Signed-off-by: Xiao Feng Ren <renxiaof@linux.vnet.ibm.com>
Signed-off-by: Dong Jia Shi <bjsdjshi@linux.vnet.ibm.com>
Message-Id: <20170517004813.58227-12-bjsdjshi@linux.vnet.ibm.com>
Signed-off-by: Cornelia Huck <cornelia.huck@de.ibm.com>
2017-05-19 12:29:01 +02:00
Xiao Feng Ren
274250c301 s390x/css: add s390-squash-mcss machine option
We want to support real (i.e. not virtual) channel devices
even for guests that do not support MCSS-E (where guests may
see devices from any channel subsystem image at once). As all
virtio-ccw devices are in css 0xfe (and show up in the default
css 0 for guests not activating MCSS-E), we need an option to
squash both the virtio subchannels and e.g. passed-through
subchannels from their real css (0-3, or 0 for hosts not
activating MCSS-E) into the default css. This will be
exploited in a later patch.

Signed-off-by: Xiao Feng Ren <renxiaof@linux.vnet.ibm.com>
Signed-off-by: Dong Jia Shi <bjsdjshi@linux.vnet.ibm.com>
Message-Id: <20170517004813.58227-4-bjsdjshi@linux.vnet.ibm.com>
Signed-off-by: Cornelia Huck <cornelia.huck@de.ibm.com>
2017-05-19 12:29:01 +02:00
Stefan Hajnoczi
2ccbd47c1d migration/next for 20170517
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Merge remote-tracking branch 'quintela/tags/migration/20170517' into staging

migration/next for 20170517

# gpg: Signature made Wed 17 May 2017 11:46:36 AM BST
# gpg:                using RSA key 0xF487EF185872D723
# gpg: Good signature from "Juan Quintela <quintela@redhat.com>"
# gpg:                 aka "Juan Quintela <quintela@trasno.org>"
# Primary key fingerprint: 1899 FF8E DEBF 58CC EE03  4B82 F487 EF18 5872 D723

* quintela/tags/migration/20170517:
  migration: Move check_migratable() into qdev.c
  migration: Move postcopy stuff to postcopy-ram.c
  migration: Move page_cache.c to migration/
  migration: Create migration/blocker.h
  ram: Rename RAM_SAVE_FLAG_COMPRESS to RAM_SAVE_FLAG_ZERO
  migration: Pass Error ** argument to {save,load}_vmstate
  migration: Fix regression with compression threads

Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
2017-05-18 10:05:52 +01:00
Eduardo Habkost
e90f2a8c3e qdev: Replace cannot_instantiate_with_device_add_yet with !user_creatable
cannot_instantiate_with_device_add_yet was introduced by commit
efec3dd631 to replace no_user. It was
supposed to be a temporary measure.

When it was introduced, we had 54
cannot_instantiate_with_device_add_yet=true lines in the code.
Today (3 years later) this number has not shrunk: we now have
57 cannot_instantiate_with_device_add_yet=true lines. I think it
is safe to say it is not a temporary measure, and we won't see
the flag go away soon.

Instead of a long field name that misleads people to believe it
is temporary, replace it a shorter and less misleading field:
user_creatable.

Except for code comments, changes were generated using the
following Coccinelle patch:

  @@
  expression DC;
  @@
  (
  -DC->cannot_instantiate_with_device_add_yet = false;
  +DC->user_creatable = true;
  |
  -DC->cannot_instantiate_with_device_add_yet = true;
  +DC->user_creatable = false;
  )

  @@
  typedef ObjectClass;
  expression dc;
  identifier class, data;
  @@
   static void device_class_init(ObjectClass *class, void *data)
   {
   ...
   dc->hotpluggable = true;
  +dc->user_creatable = true;
   ...
   }

  @@
  @@
   struct DeviceClass {
   ...
  -bool cannot_instantiate_with_device_add_yet;
  +bool user_creatable;
   ...
  }

  @@
  expression DC;
  @@
  (
  -!DC->cannot_instantiate_with_device_add_yet
  +DC->user_creatable
  |
  -DC->cannot_instantiate_with_device_add_yet
  +!DC->user_creatable
  )

Cc: Alistair Francis <alistair.francis@xilinx.com>
Cc: Laszlo Ersek <lersek@redhat.com>
Cc: Marcel Apfelbaum <marcel@redhat.com>
Cc: Markus Armbruster <armbru@redhat.com>
Cc: Peter Maydell <peter.maydell@linaro.org>
Cc: Thomas Huth <thuth@redhat.com>
Acked-by: Alistair Francis <alistair.francis@xilinx.com>
Reviewed-by: Thomas Huth <thuth@redhat.com>
Reviewed-by: Marcel Apfelbaum <marcel@redhat.com>
Acked-by: Marcel Apfelbaum <marcel@redhat.com>
Signed-off-by: Eduardo Habkost <ehabkost@redhat.com>
Message-Id: <20170503203604.31462-2-ehabkost@redhat.com>
[ehabkost: kept "TODO remove once we're there" comment]
Reviewed-by: Markus Armbruster <armbru@redhat.com>
Signed-off-by: Eduardo Habkost <ehabkost@redhat.com>
2017-05-17 10:37:00 -03:00
Juan Quintela
795c40b8bd migration: Create migration/blocker.h
This allows us to remove lots of includes of migration/migration.h

Signed-off-by: Juan Quintela <quintela@redhat.com>
Reviewed-by: Peter Xu <peterx@redhat.com>
Reviewed-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
2017-05-17 12:04:59 +02:00
Stefan Hajnoczi
6a8d834986 Queued target/sh4 patches
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Merge remote-tracking branch 'aurel32/tags/pull-target-sh4-20170513' into staging

Queued target/sh4 patches

# gpg: Signature made Sat 13 May 2017 10:25:41 AM BST
# gpg:                using RSA key 0xBA9C78061DDD8C9B
# gpg: Good signature from "Aurelien Jarno <aurelien@aurel32.net>"
# gpg:                 aka "Aurelien Jarno <aurelien@jarno.fr>"
# gpg:                 aka "Aurelien Jarno <aurel32@debian.org>"
# Primary key fingerprint: 7746 2642 A9EF 94FD 0F77  196D BA9C 7806 1DDD 8C9B

* aurel32/tags/pull-target-sh4-20170513:
  target/sh4: use cpu_loop_exit_restore
  target/sh4: trap unaligned accesses
  target/sh4: movua.l is an SH4-A only instruction
  target/sh4: implement tas.b using atomic helper
  target/sh4: generate fences for SH4
  target/sh4: optimize gen_write_sr using extract op
  target/sh4: optimize gen_store_fpr64
  target/sh4: fold ctx->bstate = BS_BRANCH into gen_conditional_jump
  target/sh4: only save flags state at the end of the TB
  target/sh4: fix BS_EXCP exit
  target/sh4: fix BS_STOP exit
  target/sh4: move DELAY_SLOT_TRUE flag into a separate global
  target/sh4: do not include DELAY_SLOT_TRUE in the TB state
  target/sh4: get rid of DELAY_SLOT_CLEARME
  target/sh4: split ctx->flags into ctx->tbflags and ctx->envflags

Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
2017-05-16 15:26:17 +01:00