From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from eggs.gnu.org ([209.51.188.92]:55825) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1ghZHQ-0004Qa-4a for qemu-devel@nongnu.org; Thu, 10 Jan 2019 07:17:48 -0500 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1ghZHP-0007Sk-Ax for qemu-devel@nongnu.org; Thu, 10 Jan 2019 07:17:48 -0500 Received: from mail-pl1-x642.google.com ([2607:f8b0:4864:20::642]:46077) by eggs.gnu.org with esmtps (TLS1.0:RSA_AES_128_CBC_SHA1:16) (Exim 4.71) (envelope-from ) id 1ghZHO-0007QH-EH for qemu-devel@nongnu.org; Thu, 10 Jan 2019 07:17:47 -0500 Received: by mail-pl1-x642.google.com with SMTP id a14so5099025plm.12 for ; Thu, 10 Jan 2019 04:17:45 -0800 (PST) From: Richard Henderson Date: Thu, 10 Jan 2019 23:17:25 +1100 Message-Id: <20190110121736.23448-1-richard.henderson@linaro.org> Subject: [Qemu-devel] [PATCH 00/11] target/arm: Implement ARMv8.5-BTI List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , To: qemu-devel@nongnu.org Cc: peter.maydell@linaro.org The branch target identification extension does not yet have kernel or gcc support. It should be in shape for developing those though. In system mode I do honor the GP bit from the page tables. In user-only mode, there is a way to pretend that the GP bit is always set. Further linux-user changes will have to track the ABI that gets developed. In the meantime, provide a statically linable make check-tcg test for the functionality. 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 | 22 ++++ 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, 397 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