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[174.21.9.133]) by smtp.gmail.com with ESMTPSA id 6-v6sm17441210pgl.6.2018.10.16.10.49.39 (version=TLS1_2 cipher=ECDHE-RSA-CHACHA20-POLY1305 bits=256/256); Tue, 16 Oct 2018 10:49:39 -0700 (PDT) From: Richard Henderson To: qemu-devel@nongnu.org Date: Tue, 16 Oct 2018 10:49:08 -0700 Message-Id: <20181016174911.9052-19-richard.henderson@linaro.org> X-Mailer: git-send-email 2.17.2 In-Reply-To: <20181016174911.9052-1-richard.henderson@linaro.org> References: <20181016174911.9052-1-richard.henderson@linaro.org> X-detected-operating-system: by eggs.gnu.org: Genre and OS details not recognized. X-Received-From: 2607:f8b0:4864:20::42a Subject: [Qemu-devel] [PULL 18/21] target/s390x: Split do_cdsg, do_lpq, do_stpq X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.21 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: peter.maydell@linaro.org Errors-To: qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org Sender: "Qemu-devel" Reviewed-by: David Hildenbrand Signed-off-by: Richard Henderson --- target/s390x/mem_helper.c | 128 ++++++++++++++++++-------------------- 1 file changed, 61 insertions(+), 67 deletions(-) diff --git a/target/s390x/mem_helper.c b/target/s390x/mem_helper.c index e106f61b4e..b5858d2fa2 100644 --- a/target/s390x/mem_helper.c +++ b/target/s390x/mem_helper.c @@ -1380,57 +1380,58 @@ uint32_t HELPER(trXX)(CPUS390XState *env, uint32_t r1, uint32_t r2, return cc; } -static void do_cdsg(CPUS390XState *env, uint64_t addr, - uint32_t r1, uint32_t r3, bool parallel) +void HELPER(cdsg)(CPUS390XState *env, uint64_t addr, + uint32_t r1, uint32_t r3) { uintptr_t ra = GETPC(); Int128 cmpv = int128_make128(env->regs[r1 + 1], env->regs[r1]); Int128 newv = int128_make128(env->regs[r3 + 1], env->regs[r3]); Int128 oldv; + uint64_t oldh, oldl; bool fail; - if (parallel) { -#if !HAVE_CMPXCHG128 - cpu_loop_exit_atomic(ENV_GET_CPU(env), ra); -#else - int mem_idx = cpu_mmu_index(env, false); - TCGMemOpIdx oi = make_memop_idx(MO_TEQ | MO_ALIGN_16, mem_idx); - oldv = helper_atomic_cmpxchgo_be_mmu(env, addr, cmpv, newv, oi, ra); - fail = !int128_eq(oldv, cmpv); -#endif - } else { - uint64_t oldh, oldl; + check_alignment(env, addr, 16, ra); - check_alignment(env, addr, 16, ra); + oldh = cpu_ldq_data_ra(env, addr + 0, ra); + oldl = cpu_ldq_data_ra(env, addr + 8, ra); - oldh = cpu_ldq_data_ra(env, addr + 0, ra); - oldl = cpu_ldq_data_ra(env, addr + 8, ra); - - oldv = int128_make128(oldl, oldh); - fail = !int128_eq(oldv, cmpv); - if (fail) { - newv = oldv; - } - - cpu_stq_data_ra(env, addr + 0, int128_gethi(newv), ra); - cpu_stq_data_ra(env, addr + 8, int128_getlo(newv), ra); + oldv = int128_make128(oldl, oldh); + fail = !int128_eq(oldv, cmpv); + if (fail) { + newv = oldv; } + cpu_stq_data_ra(env, addr + 0, int128_gethi(newv), ra); + cpu_stq_data_ra(env, addr + 8, int128_getlo(newv), ra); + env->cc_op = fail; env->regs[r1] = int128_gethi(oldv); env->regs[r1 + 1] = int128_getlo(oldv); } -void HELPER(cdsg)(CPUS390XState *env, uint64_t addr, - uint32_t r1, uint32_t r3) -{ - do_cdsg(env, addr, r1, r3, false); -} - void HELPER(cdsg_parallel)(CPUS390XState *env, uint64_t addr, uint32_t r1, uint32_t r3) { - do_cdsg(env, addr, r1, r3, true); + uintptr_t ra = GETPC(); + Int128 cmpv = int128_make128(env->regs[r1 + 1], env->regs[r1]); + Int128 newv = int128_make128(env->regs[r3 + 1], env->regs[r3]); + int mem_idx; + TCGMemOpIdx oi; + Int128 oldv; + bool fail; + + if (!HAVE_CMPXCHG128) { + cpu_loop_exit_atomic(ENV_GET_CPU(env), ra); + } + + mem_idx = cpu_mmu_index(env, false); + oi = make_memop_idx(MO_TEQ | MO_ALIGN_16, mem_idx); + oldv = helper_atomic_cmpxchgo_be_mmu(env, addr, cmpv, newv, oi, ra); + fail = !int128_eq(oldv, cmpv); + + env->cc_op = fail; + env->regs[r1] = int128_gethi(oldv); + env->regs[r1 + 1] = int128_getlo(oldv); } static uint32_t do_csst(CPUS390XState *env, uint32_t r3, uint64_t a1, @@ -2097,16 +2098,25 @@ uint64_t HELPER(lra)(CPUS390XState *env, uint64_t addr) #endif /* load pair from quadword */ -static uint64_t do_lpq(CPUS390XState *env, uint64_t addr, bool parallel) +uint64_t HELPER(lpq)(CPUS390XState *env, uint64_t addr) { uintptr_t ra = GETPC(); uint64_t hi, lo; - if (!parallel) { - check_alignment(env, addr, 16, ra); - hi = cpu_ldq_data_ra(env, addr + 0, ra); - lo = cpu_ldq_data_ra(env, addr + 8, ra); - } else if (HAVE_ATOMIC128) { + check_alignment(env, addr, 16, ra); + hi = cpu_ldq_data_ra(env, addr + 0, ra); + lo = cpu_ldq_data_ra(env, addr + 8, ra); + + env->retxl = lo; + return hi; +} + +uint64_t HELPER(lpq_parallel)(CPUS390XState *env, uint64_t addr) +{ + uintptr_t ra = GETPC(); + uint64_t hi, lo; + + if (HAVE_ATOMIC128) { int mem_idx = cpu_mmu_index(env, false); TCGMemOpIdx oi = make_memop_idx(MO_TEQ | MO_ALIGN_16, mem_idx); Int128 v = helper_atomic_ldo_be_mmu(env, addr, oi, ra); @@ -2120,27 +2130,23 @@ static uint64_t do_lpq(CPUS390XState *env, uint64_t addr, bool parallel) return hi; } -uint64_t HELPER(lpq)(CPUS390XState *env, uint64_t addr) -{ - return do_lpq(env, addr, false); -} - -uint64_t HELPER(lpq_parallel)(CPUS390XState *env, uint64_t addr) -{ - return do_lpq(env, addr, true); -} - /* store pair to quadword */ -static void do_stpq(CPUS390XState *env, uint64_t addr, - uint64_t low, uint64_t high, bool parallel) +void HELPER(stpq)(CPUS390XState *env, uint64_t addr, + uint64_t low, uint64_t high) { uintptr_t ra = GETPC(); - if (!parallel) { - check_alignment(env, addr, 16, ra); - cpu_stq_data_ra(env, addr + 0, high, ra); - cpu_stq_data_ra(env, addr + 8, low, ra); - } else if (HAVE_ATOMIC128) { + check_alignment(env, addr, 16, ra); + cpu_stq_data_ra(env, addr + 0, high, ra); + cpu_stq_data_ra(env, addr + 8, low, ra); +} + +void HELPER(stpq_parallel)(CPUS390XState *env, uint64_t addr, + uint64_t low, uint64_t high) +{ + uintptr_t ra = GETPC(); + + if (HAVE_ATOMIC128) { int mem_idx = cpu_mmu_index(env, false); TCGMemOpIdx oi = make_memop_idx(MO_TEQ | MO_ALIGN_16, mem_idx); Int128 v = int128_make128(low, high); @@ -2150,18 +2156,6 @@ static void do_stpq(CPUS390XState *env, uint64_t addr, } } -void HELPER(stpq)(CPUS390XState *env, uint64_t addr, - uint64_t low, uint64_t high) -{ - do_stpq(env, addr, low, high, false); -} - -void HELPER(stpq_parallel)(CPUS390XState *env, uint64_t addr, - uint64_t low, uint64_t high) -{ - do_stpq(env, addr, low, high, true); -} - /* Execute instruction. This instruction executes an insn modified with the contents of r1. It does not change the executed instruction in memory; it does not change the program counter.