From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from eggs.gnu.org ([2001:4830:134:3::10]:58966) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1bHboE-0006kF-Td for qemu-devel@nongnu.org; Mon, 27 Jun 2016 15:03:06 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1bHboC-0008OB-7X for qemu-devel@nongnu.org; Mon, 27 Jun 2016 15:03:01 -0400 Received: from out3-smtp.messagingengine.com ([66.111.4.27]:46305) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1bHbo9-0008GQ-Uy for qemu-devel@nongnu.org; Mon, 27 Jun 2016 15:03:00 -0400 From: "Emilio G. Cota" Date: Mon, 27 Jun 2016 15:02:09 -0400 Message-Id: <1467054136-10430-24-git-send-email-cota@braap.org> In-Reply-To: <1467054136-10430-1-git-send-email-cota@braap.org> References: <1467054136-10430-1-git-send-email-cota@braap.org> Subject: [Qemu-devel] [RFC 23/30] target-arm: add atomic_xchg helper List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , To: QEMU Developers , MTTCG Devel Cc: =?UTF-8?q?Alex=20Benn=C3=A9e?= , Paolo Bonzini , Richard Henderson , Sergey Fedorov , Alvise Rigo , Peter Maydell Signed-off-by: Emilio G. Cota --- target-arm/helper.c | 10 ++++++++++ target-arm/helper.h | 3 +++ 2 files changed, 13 insertions(+) diff --git a/target-arm/helper.c b/target-arm/helper.c index b38bfbd..adab296 100644 --- a/target-arm/helper.c +++ b/target-arm/helper.c @@ -9444,3 +9444,13 @@ uint32_t HELPER(cmpxchgq)(CPUARMState *env, uint32_t addr, uint64_t old, read = cpu_cmpxchgq_data_ra(env, addr, old, new, GETPC()); return read != old; } + +uint32_t HELPER(atomic_xchgb)(CPUARMState *env, uint32_t addr, uint32_t val) +{ + return cpu_atomic_xchgb_data_ra(env, addr, val, GETPC()); +} + +uint32_t HELPER(atomic_xchgl)(CPUARMState *env, uint32_t addr, uint32_t val) +{ + return cpu_atomic_xchgl_data_ra(env, addr, val, GETPC()); +} diff --git a/target-arm/helper.h b/target-arm/helper.h index f3d6f26..7a36bb3 100644 --- a/target-arm/helper.h +++ b/target-arm/helper.h @@ -542,6 +542,9 @@ DEF_HELPER_4(cmpxchgw, i32, env, i32, i64, i32) DEF_HELPER_4(cmpxchgl, i32, env, i32, i64, i32) DEF_HELPER_5(cmpxchgq, i32, env, i32, i64, i32, i32) +DEF_HELPER_3(atomic_xchgb, i32, env, i32, i32) +DEF_HELPER_3(atomic_xchgl, i32, env, i32, i32) + #ifdef TARGET_AARCH64 #include "helper-a64.h" #endif -- 2.5.0