Signed-off-by: Claudio Fontana <cfontana@suse.de> Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org> Message-Id: <20201015143217.29337-4-cfontana@suse.de> Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
83 lines
2.4 KiB
C
83 lines
2.4 KiB
C
/*
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* QEMU TCG vCPU common functionality
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*
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* Functionality common to all TCG vCPU variants: mttcg, rr and icount.
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*
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* Copyright (c) 2003-2008 Fabrice Bellard
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* Copyright (c) 2014 Red Hat Inc.
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*
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* Permission is hereby granted, free of charge, to any person obtaining a copy
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* of this software and associated documentation files (the "Software"), to deal
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* in the Software without restriction, including without limitation the rights
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* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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* copies of the Software, and to permit persons to whom the Software is
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* furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included in
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* all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
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* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
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* THE SOFTWARE.
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*/
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#include "qemu/osdep.h"
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#include "qemu-common.h"
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#include "sysemu/tcg.h"
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#include "sysemu/replay.h"
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#include "qemu/main-loop.h"
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#include "qemu/guest-random.h"
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#include "exec/exec-all.h"
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#include "hw/boards.h"
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#include "tcg-cpus.h"
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/* common functionality among all TCG variants */
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void tcg_cpus_destroy(CPUState *cpu)
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{
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cpu_thread_signal_destroyed(cpu);
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}
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int tcg_cpus_exec(CPUState *cpu)
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{
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int ret;
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#ifdef CONFIG_PROFILER
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int64_t ti;
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#endif
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assert(tcg_enabled());
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#ifdef CONFIG_PROFILER
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ti = profile_getclock();
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#endif
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cpu_exec_start(cpu);
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ret = cpu_exec(cpu);
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cpu_exec_end(cpu);
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#ifdef CONFIG_PROFILER
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qatomic_set(&tcg_ctx->prof.cpu_exec_time,
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tcg_ctx->prof.cpu_exec_time + profile_getclock() - ti);
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#endif
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return ret;
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}
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/* mask must never be zero, except for A20 change call */
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void tcg_cpus_handle_interrupt(CPUState *cpu, int mask)
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{
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g_assert(qemu_mutex_iothread_locked());
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cpu->interrupt_request |= mask;
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/*
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* If called from iothread context, wake the target cpu in
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* case its halted.
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*/
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if (!qemu_cpu_is_self(cpu)) {
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qemu_cpu_kick(cpu);
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} else {
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qatomic_set(&cpu_neg(cpu)->icount_decr.u16.high, -1);
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}
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}
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