From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from eggs.gnu.org ([2001:4830:134:3::10]:50460) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1aqo9N-0001wy-SY for qemu-devel@nongnu.org; Thu, 14 Apr 2016 16:46:07 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1aqo9K-0004tt-GE for qemu-devel@nongnu.org; Thu, 14 Apr 2016 16:46:05 -0400 Received: from mail-lf0-x231.google.com ([2a00:1450:4010:c07::231]:33714) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1aqo9K-0004ti-64 for qemu-devel@nongnu.org; Thu, 14 Apr 2016 16:46:02 -0400 Received: by mail-lf0-x231.google.com with SMTP id e190so123383800lfe.0 for ; Thu, 14 Apr 2016 13:46:02 -0700 (PDT) From: Sergey Fedorov Date: Thu, 14 Apr 2016 23:45:48 +0300 Message-Id: <1460666749-24452-4-git-send-email-sergey.fedorov@linaro.org> In-Reply-To: <1460666749-24452-1-git-send-email-sergey.fedorov@linaro.org> References: <1460666749-24452-1-git-send-email-sergey.fedorov@linaro.org> MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Subject: [Qemu-devel] [PATCH v3 3/4] cpu-exec: elide more icount code if CONFIG_USER_ONLY List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , To: qemu-devel@nongnu.org Cc: =?UTF-8?q?Alex=20Benn=C3=A9e?= , Sergey Fedorov , Paolo Bonzini , Peter Crosthwaite , Richard Henderson , Sergey Fedorov From: Paolo Bonzini Signed-off-by: Paolo Bonzini [Alex Bennée: #ifndef replay code to match elided functions] Signed-off-by: Alex Bennée Signed-off-by: Sergey Fedorov --- cpu-exec.c | 8 ++++++++ 1 file changed, 8 insertions(+) diff --git a/cpu-exec.c b/cpu-exec.c index 4cba4efc92b2..36942340d7e3 100644 --- a/cpu-exec.c +++ b/cpu-exec.c @@ -192,6 +192,7 @@ static inline tcg_target_ulong cpu_tb_exec(CPUState *cpu, TranslationBlock *itb) return next_tb; } +#ifndef CONFIG_USER_ONLY /* Execute the code without caching the generated code. An interpreter could be used if available. */ static void cpu_exec_nocache(CPUState *cpu, int max_cycles, @@ -216,6 +217,7 @@ static void cpu_exec_nocache(CPUState *cpu, int max_cycles, tb_phys_invalidate(tb, -1); tb_free(tb); } +#endif static TranslationBlock *tb_find_physical(CPUState *cpu, target_ulong pc, @@ -430,12 +432,14 @@ int cpu_exec(CPUState *cpu) } #endif } +#ifndef CONFIG_USER_ONLY } else if (replay_has_exception() && cpu->icount_decr.u16.low + cpu->icount_extra == 0) { /* try to cause an exception pending in the log */ cpu_exec_nocache(cpu, 1, tb_find_fast(cpu), true); ret = -1; break; +#endif } next_tb = 0; /* force lookup of first TB */ @@ -545,6 +549,9 @@ int cpu_exec(CPUState *cpu) case TB_EXIT_ICOUNT_EXPIRED: { /* Instruction counter expired. */ +#ifdef CONFIG_USER_ONLY + abort(); +#else int insns_left = cpu->icount_decr.u32; if (cpu->icount_extra && insns_left >= 0) { /* Refill decrementer and continue execution. */ @@ -564,6 +571,7 @@ int cpu_exec(CPUState *cpu) cpu_loop_exit(cpu); } break; +#endif } default: break; -- 2.8.1