[Qemu-commits] [qemu/qemu] ec603b: tcg: Record code_gen_buffer address for user-only ...

[GitHub]

  Branch: refs/heads/master
  Home:   https://github.com/qemu/qemu
  Commit: ec603b5584fa71213ef8f324fe89e4b27cc9d2bc
      
https://github.com/qemu/qemu/commit/ec603b5584fa71213ef8f324fe89e4b27cc9d2bc
  Author: Richard Henderson <address@hidden>
  Date:   2017-11-15 (Wed, 15 Nov 2017)

  Changed paths:
    M accel/tcg/atomic_template.h
    M accel/tcg/cputlb.c
    M accel/tcg/user-exec.c
    M include/exec/cpu_ldst.h
    M include/exec/cpu_ldst_useronly_template.h

  Log Message:
  -----------
  tcg: Record code_gen_buffer address for user-only memory helpers

When we handle a signal from a fault within a user-only memory helper,
we cannot cpu_restore_state with the PC found within the signal frame.
Use a TLS variable, helper_retaddr, to record the unwind start point
to find the faulting guest insn.

Tested-by: Alex Bennée <address@hidden>
Reviewed-by: Alex Bennée <address@hidden>
Reported-by: Peter Maydell <address@hidden>
Signed-off-by: Richard Henderson <address@hidden>


  Commit: 3bdb5fcc9a08a9a47ce30c4e0c2d64c95190b49d
      
https://github.com/qemu/qemu/commit/3bdb5fcc9a08a9a47ce30c4e0c2d64c95190b49d
  Author: Richard Henderson <address@hidden>
  Date:   2017-11-15 (Wed, 15 Nov 2017)

  Changed paths:
    M target/arm/helper-a64.c

  Log Message:
  -----------
  target/arm: Use helper_retaddr in stxp helpers

We use raw memory primitives along the !parallel_cpus paths in order to
simplify the endianness handling.  Because of that, we did not benefit
from the generic changes to cpu_ldst_user_only_template.h.

The simplest fix is to manipulate helper_retaddr here.

Reviewed-by: Alex Bennée <address@hidden>
Signed-off-by: Richard Henderson <address@hidden>


  Commit: 3c5f9c3f35dd3b6d1d1cd68c9d4d86fc3c59c397
      
https://github.com/qemu/qemu/commit/3c5f9c3f35dd3b6d1d1cd68c9d4d86fc3c59c397
  Author: Richard Henderson <address@hidden>
  Date:   2017-11-15 (Wed, 15 Nov 2017)

  Changed paths:
    M target/arm/helper-a64.c

  Log Message:
  -----------
  target/arm: Fix GETPC usage in do_paired_cmpxchg64_l/be

Use of GETPC must be restricted to those functions that are
directly called from TCG generated code.

Reviewed-by: Alex Bennée <address@hidden>
Fixes: 2399d4e7cec22ecf1c51062d2ebfd45220dbaace
Signed-off-by: Richard Henderson <address@hidden>


  Commit: 6a7cb8c3d674815cab08d884740d203fded12249
      
https://github.com/qemu/qemu/commit/6a7cb8c3d674815cab08d884740d203fded12249
  Author: Peter Maydell <address@hidden>
  Date:   2017-11-16 (Thu, 16 Nov 2017)

  Changed paths:
    M accel/tcg/atomic_template.h
    M accel/tcg/cputlb.c
    M accel/tcg/user-exec.c
    M include/exec/cpu_ldst.h
    M include/exec/cpu_ldst_useronly_template.h
    M target/arm/helper-a64.c

  Log Message:
  -----------
  Merge remote-tracking branch 'remotes/rth/tags/pull-tcg-20171115' into staging

User-mode memory helper fixes

# gpg: Signature made Wed 15 Nov 2017 12:32:33 GMT
# gpg:                using RSA key 0x64DF38E8AF7E215F
# gpg: Good signature from "Richard Henderson <address@hidden>"
# Primary key fingerprint: 7A48 1E78 868B 4DB6 A85A  05C0 64DF 38E8 AF7E 215F

* remotes/rth/tags/pull-tcg-20171115:
  target/arm: Fix GETPC usage in do_paired_cmpxchg64_l/be
  target/arm: Use helper_retaddr in stxp helpers
  tcg: Record code_gen_buffer address for user-only memory helpers

Signed-off-by: Peter Maydell <address@hidden>


Compare: https://github.com/qemu/qemu/compare/8048082f7a11...6a7cb8c3d674