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envelope-from=qemu-devel-bounces+importer=patchew.org@nongnu.org; helo=lists.gnu.org; Received-SPF: pass client-ip=205.220.180.131; envelope-from=brian.cain@oss.qualcomm.com; helo=mx0b-0031df01.pphosted.com X-Spam_score_int: -10 X-Spam_score: -1.1 X-Spam_bar: - X-Spam_report: (-1.1 / 5.0 requ) BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, RCVD_IN_DNSWL_LOW=-0.7, RCVD_IN_VALIDITY_RPBL_BLOCKED=0.819, RCVD_IN_VALIDITY_SAFE_BLOCKED=0.903, SPF_HELO_NONE=0.001, SPF_PASS=-0.001 autolearn=no autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: qemu development List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: qemu-devel-bounces+importer=patchew.org@nongnu.org Sender: qemu-devel-bounces+importer=patchew.org@nongnu.org X-ZohoMail-DKIM: pass (identity @qualcomm.com) X-ZM-MESSAGEID: 1773202433811154100 From: Brian Cain Reviewed-by: Taylor Simpson Signed-off-by: Brian Cain --- target/hexagon/cpu.h | 1 + target/hexagon/cpu_helper.h | 1 + target/hexagon/cpu_helper.c | 36 ++++++++++++++++++++++++++++++++++++ target/hexagon/op_helper.c | 3 ++- 4 files changed, 40 insertions(+), 1 deletion(-) diff --git a/target/hexagon/cpu.h b/target/hexagon/cpu.h index 3446910feb6..6168fea3b5f 100644 --- a/target/hexagon/cpu.h +++ b/target/hexagon/cpu.h @@ -50,6 +50,7 @@ #define PRED_WRITES_MAX 5 /* 4 insns + endloop */ #define VSTORES_MAX 2 #define MAX_TLB_ENTRIES 1024 +#define THREADS_MAX 8 =20 #define CPU_RESOLVING_TYPE TYPE_HEXAGON_CPU #ifndef CONFIG_USER_ONLY diff --git a/target/hexagon/cpu_helper.h b/target/hexagon/cpu_helper.h index 72f83d62a54..dc99b4c294b 100644 --- a/target/hexagon/cpu_helper.h +++ b/target/hexagon/cpu_helper.h @@ -20,5 +20,6 @@ void clear_wait_mode(CPUHexagonState *env); void hexagon_ssr_set_cause(CPUHexagonState *env, uint32_t cause); void hexagon_start_threads(CPUHexagonState *env, uint32_t mask); void hexagon_stop_thread(CPUHexagonState *env); +void hexagon_resume_threads(CPUHexagonState *env, uint32_t mask); =20 #endif diff --git a/target/hexagon/cpu_helper.c b/target/hexagon/cpu_helper.c index 729ffa47eed..dcb07283494 100644 --- a/target/hexagon/cpu_helper.c +++ b/target/hexagon/cpu_helper.c @@ -87,6 +87,42 @@ void hexagon_set_sys_pcycle_count(CPUHexagonState *env, = uint64_t cycles) } } =20 +static void hexagon_resume_thread(CPUHexagonState *env) +{ + CPUState *cs =3D env_cpu(env); + clear_wait_mode(env); + /* + * The wait instruction keeps the PC pointing to itself + * so that it has an opportunity to check for interrupts. + * + * When we come out of wait mode, adjust the PC to the + * next executable instruction. + */ + env->gpr[HEX_REG_PC] =3D env->wait_next_pc; + cs =3D env_cpu(env); + ASSERT_DIRECT_TO_GUEST_UNSET(env, cs->exception_index); + cs->halted =3D false; + cs->exception_index =3D HEX_EVENT_NONE; + qemu_cpu_kick(cs); +} + +void hexagon_resume_threads(CPUHexagonState *current_env, uint32_t mask) +{ + CPUState *cs; + CPUHexagonState *env; + + g_assert(bql_locked()); + CPU_FOREACH(cs) { + env =3D cpu_env(cs); + g_assert(env->threadId < THREADS_MAX); + if ((mask & (0x1 << env->threadId))) { + if (get_exe_mode(env) =3D=3D HEX_EXE_MODE_WAIT) { + hexagon_resume_thread(env); + } + } + } +} + void hexagon_modify_ssr(CPUHexagonState *env, uint32_t new, uint32_t old) { g_assert(bql_locked()); diff --git a/target/hexagon/op_helper.c b/target/hexagon/op_helper.c index dff6092dd8a..9090a5c20ab 100644 --- a/target/hexagon/op_helper.c +++ b/target/hexagon/op_helper.c @@ -1586,7 +1586,8 @@ void HELPER(wait)(CPUHexagonState *env, uint32_t PC) =20 void HELPER(resume)(CPUHexagonState *env, uint32_t mask) { - g_assert_not_reached(); + BQL_LOCK_GUARD(); + hexagon_resume_threads(env, mask); } =20 uint32_t HELPER(getimask)(CPUHexagonState *env, uint32_t tid) --=20 2.34.1