| Message ID | 20231128155609.198744-1-victor.donascimento@arm.com |
|---|---|
| Headers | show |
| Series | aarch64: Add Armv9.4-a 128-bit system-register read/write support | expand |
Victor Do Nascimento <victor.donascimento@arm.com> writes: > Changes from v1 - > https://gcc.gnu.org/pipermail/gcc-patches/2023-November/635531.html > > * [PATCH 4/5] - For `error_at' message, put feature name in quotes. > * [PATCH 4/5] - For `aarch64_retrieve_sysreg' function, add > description of new parameter to comments. > * [PATCH 5/5] - Reduce the minimum arch requirements of the system > register unit tests, selectively using `#pragma GCC target' when > testing 128-bit sysreg r/w functions. OK for the series, thanks, with the changelog tweak that Kyrill asked for. 1-3 had already been approved and I agree that the new versions of 4 and 5 address the review comments. Richard > --- > > Given the introduction of optional 128-bit page table descriptor and > translation hardening extension support with the Arm9.4-a > architecture, this patch series introduces the necessary changes to > the aarch64-specific builtin code to enable the reading and writing of > 128-bit system registers. In so doing, the following ACLE builtins and > feature macro are made available to the compiler: > > * __uint128_t __arm_rsr128(const char *special_register); > * void __arm_wsr128(const char *special_register, __uint128_t value); > * __ARM_FEATURE_SYSREG128. > > Finally, in order to update the GCC system-register database bringing > it in line with Binutils, and in so doing add the relevant 128-bit > system registers to GCC, this patch also introduces the Guarded > Control Stack (GCS) `+gcs' architecture modifier flag, allowing the > inclusion of the novel GCS system registers which are now supported > and also present in the `aarch64-sys-regs.def' system register > database. > > Victor Do Nascimento (5): > aarch64: Add march flags for +the and +d128 arch extensions > aarch64: Add support for GCS system registers with the +gcs modifier > aarch64: Sync `aarch64-sys-regs.def' with Binutils. > aarch64: Implement 128-bit extension to ACLE sysreg r/w builtins > aarch64: Add rsr128 and wsr128 ACLE tests > > gcc/config/aarch64/aarch64-arches.def | 2 + > gcc/config/aarch64/aarch64-builtins.cc | 50 ++++++++++++++++--- > gcc/config/aarch64/aarch64-c.cc | 1 + > .../aarch64/aarch64-option-extensions.def | 6 +++ > gcc/config/aarch64/aarch64-protos.h | 2 +- > gcc/config/aarch64/aarch64-sys-regs.def | 30 +++++++---- > gcc/config/aarch64/aarch64.cc | 9 +++- > gcc/config/aarch64/aarch64.h | 21 ++++++++ > gcc/config/aarch64/aarch64.md | 18 +++++++ > gcc/config/aarch64/arm_acle.h | 11 ++++ > gcc/doc/invoke.texi | 8 +++ > gcc/testsuite/gcc.target/aarch64/acle/rwsr.c | 32 ++++++++++++ > 12 files changed, 170 insertions(+), 20 deletions(-)