From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from eggs.gnu.org ([2001:4830:134:3::10]:49558) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1eqkAc-0004QA-CP for qemu-devel@nongnu.org; Tue, 27 Feb 2018 13:40:11 -0500 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1eqkAb-0008Bu-JC for qemu-devel@nongnu.org; Tue, 27 Feb 2018 13:40:10 -0500 From: Peter Maydell Date: Tue, 27 Feb 2018 18:39:58 +0000 Message-Id: <20180227183958.15167-1-peter.maydell@linaro.org> Subject: [Qemu-devel] [PATCH] linux-user: Report AArch64 FP16 support via hwcap bits List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , To: qemu-arm@nongnu.org, qemu-devel@nongnu.org Cc: patches@linaro.org, Richard Henderson , =?UTF-8?q?Alex=20Benn=C3=A9e?= Set the appropriate Linux hwcap bits to tell the guest binary if we have implemented half-precision floating point support. Signed-off-by: Peter Maydell --- This is intended to go after Alex's FP16 stuff since it uses the ARM_FEATURE_V8_FP16 bit that defines. There is as yet no kernel definition of an AArch32 hwcap bit to report FP16. Based-on: <20180227143852.11175-1-alex.bennee@linaro.org> linux-user/elfload.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/linux-user/elfload.c b/linux-user/elfload.c index 8bb9a2c3e8..80f1b32fbe 100644 --- a/linux-user/elfload.c +++ b/linux-user/elfload.c @@ -551,6 +551,8 @@ static uint32_t get_elf_hwcap(void) GET_FEATURE(ARM_FEATURE_V8_SM3, ARM_HWCAP_A64_SM3); GET_FEATURE(ARM_FEATURE_V8_SM4, ARM_HWCAP_A64_SM4); GET_FEATURE(ARM_FEATURE_V8_SHA512, ARM_HWCAP_A64_SHA512); + GET_FEATURE(ARM_FEATURE_V8_FP16, + ARM_HWCAP_A64_FPHP | ARM_HWCAP_A64_ASIMDHP); #undef GET_FEATURE return hwcaps; -- 2.16.2