== This Week ==
* SVE ACLE (8/10)
- Addressing comments by Richard for svlsl_wide
- Created patch for svcls / svclz
* Validation (2/10)
- WIP hcqc wrapper script
== Next Week ==
- Continue ongoing tasks
(Short week, 2 days)
Progress:
* VIRT-65 [QEMU upstream maintainership]
- catching up on email/review backlogs from the holidays
- investigating a weird failure where running 'make check' in a loop
would cause make to complain "make: write error: stdout". This seems
to be because one or two of our test cases would put stdin/stdout
into O_NONBLOCK, which then made make's output routines fall over...
thanks
-- PMM
== This Week ==
* SVE ACLE (8/10)
- WIP patches for svlsl_wide, integer comparisons and cls/clz.
* Public holiday (2/10)
== Next Week ==
- Continue ongoing tasks
[VIRT-327 # Richard's upstream QEMU work ]
Some tcg-op-gvec work in support of MCA's target/ppc AltiVec work.
But in the process filled in the blanks for target/arm to take
advantage of the new entry points.
Rebased my August linux-user split work, reorg'ed for advice, and
posted v5.
Reviewing Cota's dynamic sized tlb patch set. TODO: I want to update
the aarch64 backend for this before finalizing a data structure layout.
[VIRT-339 # ARMv8.5-BTI, Branch Target Identification ]
Posted v1. We'll not talk about mailing lists any further. :-P
Merry Christmas, all!
r~
== Progress ==
* FDPIC
- (GNU-499) GCC: wait for feedback on v4 patches
- (GNU-411) GDB: it seems qemu's gdbstub needs patches to support
packets needed by fdpic. Tried to build gdbserver for fdpic, but the
code base changed a lot since our original port.
* GCC upstream validation:
- reported a few regressions
- dealing with some random results, still
- qemu-3.1.0-rc3, memory consumption: no time to really look at the
problem. Unable to match time's figures with LSF's
* GCC:
- (GNU-99) rebased ubsan / bare-metal patches. Using gcc-built
libubsan worked with an in-house llvm-based toolchain. POC is OK, but
a clean implementation is still far.
* misc (conf-calls, meetings, emails, ....)
- reviewing/submitted infra script patches
- dealing with nasty ST-internal infrastructure problems
- (GNU-592): improved benchmarking scripts
- looking at new build servers configs
== Next ==
FDPIC:
- GCC: handle feedback on v4 patches
- GDB: update patches
- uclibc-ng: look at how to test fdpic mode with openadk
Validation:
- isolate if/why qemu-3.1.0-rc3 consumes more memory than 2.11 for
aarch64-linux target
Posting this to an internal list because v8.5 is still NDA.
There are a lot of holes to be filled wrt the user-level ABI.
In the meantime, I have a cpu property to turn on GP for all
pages. Which means that to test it, I provide a complete
statically linked program, so that nothing uses indirect
branches except that the ones I use myself.
r~
Richard Henderson (11):
target/arm: Introduce isar_feature_aa64_bti
target/arm: Add PSTATE.BTYPE
target/arm: Add BT and BTYPE to tb->flags
target/arm: Record the GP bit for a page in MemTxAttrs
target/arm: Default handling of BTYPE during translation
target/arm: Reset btype for direct branches and syscalls
target/arm: Set btype for indirect branches
target/arm: Add guarded_pages cpu property for user-only
target/arm: Enable BTI for -cpu max
linux-user/aarch64: Reset btype for signal handlers
tests/tcg/aarch64: Add bti smoke test
include/exec/memattrs.h | 2 +
target/arm/cpu.h | 22 +++-
target/arm/internals.h | 6 +
target/arm/translate.h | 9 ++
linux-user/aarch64/signal.c | 4 +
target/arm/cpu64.c | 24 ++++
target/arm/helper.c | 28 +++--
target/arm/translate-a64.c | 196 +++++++++++++++++++++++++++++-
tests/tcg/aarch64/bti-1.c | 61 ++++++++++
tests/tcg/aarch64/bti-crt.inc.c | 51 ++++++++
tests/tcg/aarch64/Makefile.target | 7 +-
11 files changed, 399 insertions(+), 11 deletions(-)
create mode 100644 tests/tcg/aarch64/bti-1.c
create mode 100644 tests/tcg/aarch64/bti-crt.inc.c
--
2.17.2
=== Work done during the last week ===
* LLVM-432 (Support arithmetic on FileCheck regex variable): in progress
+ finished cleaning up code
+ rebase on top of trunk
+ fix all issues discovered with check-all
+ add detection of conflict between numeric variable and pattern variable
+ add memory management (yay for shared_ptr)
* GNU-593 (Tied softfloat mul and div): upstream review
+ search for a non-elf arm target
-> none seems supported
* Fix issues with -mslow-flash-data: committed
+ finish testing patch for big endian and respond to upstream comments
* GNU-598 (Do not select hardfloat when targeting Thumb-1 with mfpu
set): upstream review
+ write and test patch, submit upstream
* GNU-597 (pr77904.c test failure): upstream review
+ Investigate whether code added for PR77904 should be kept
+ test and submit patch for external review
=== Plan for week 51 ===
* DSGHACK-25 (Support arithmetic on FileCheck regex variable):
+ extend testcase coverage (add tests for latest syntax change and
add more negative testing)
+ clean up the code written last week
+ improve documentation
* Tied softfloat mul and div:
+ get it committed
* GNU-598 (Do not select hardfloat when targeting Thumb-1 with mfpu set):
+ get it committed
* GNU-597 (pr77904.c test failure):
+ get it committed
* Try to reproduce perf issue mentioned in week #30's weekly report on
latest perf
o 4 days week.
o GNU releases:
* Gave support for 6.5-2018.12-rc1
o LLVM
* Tested and uploaded 7.0.1-rc3 ARM and AArch64 binaries
* Machine Outliner on ARM prototype:
- Fixed a bug in tailcall handling on ARM
- Working on an issue with outlined calls through function pointers
o Misc
* Various meetings and discussions.
