From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from eggs.gnu.org ([2001:4830:134:3::10]:45207) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1dDbs1-0001bE-Gh for qemu-devel@nongnu.org; Wed, 24 May 2017 15:22:58 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1dDbs0-0000s2-Na for qemu-devel@nongnu.org; Wed, 24 May 2017 15:22:57 -0400 Received: from mail-qk0-x242.google.com ([2607:f8b0:400d:c09::242]:32986) by eggs.gnu.org with esmtps (TLS1.0:RSA_AES_128_CBC_SHA1:16) (Exim 4.71) (envelope-from ) id 1dDbs0-0000rs-JR for qemu-devel@nongnu.org; Wed, 24 May 2017 15:22:56 -0400 Received: by mail-qk0-x242.google.com with SMTP id o85so27686811qkh.0 for ; Wed, 24 May 2017 12:22:56 -0700 (PDT) Sender: Richard Henderson From: Richard Henderson Date: Wed, 24 May 2017 12:22:16 -0700 Message-Id: <20170524192246.15905-4-rth@twiddle.net> In-Reply-To: <20170524192246.15905-1-rth@twiddle.net> References: <20170524192246.15905-1-rth@twiddle.net> Subject: [Qemu-devel] [PATCH v2 03/33] target/s390x: Use unwind data for helper_nc List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , To: qemu-devel@nongnu.org Cc: thuth@redhat.com, aurelien@aurel32.net Signed-off-by: Richard Henderson --- target/s390x/mem_helper.c | 31 ++++++++++++++++++------------- target/s390x/translate.c | 1 - 2 files changed, 18 insertions(+), 14 deletions(-) diff --git a/target/s390x/mem_helper.c b/target/s390x/mem_helper.c index 90b62fa..7d6133b 100644 --- a/target/s390x/mem_helper.c +++ b/target/s390x/mem_helper.c @@ -119,23 +119,28 @@ static void fast_memmove(CPUS390XState *env, uint64_t dest, uint64_t src, } /* and on array */ -uint32_t HELPER(nc)(CPUS390XState *env, uint32_t l, uint64_t dest, - uint64_t src) +static uint32_t do_helper_nc(CPUS390XState *env, uint32_t l, uint64_t dest, + uint64_t src, uintptr_t ra) { - int i; - unsigned char x; - uint32_t cc = 0; + uint32_t i; + uint8_t c = 0; HELPER_LOG("%s l %d dest %" PRIx64 " src %" PRIx64 "\n", __func__, l, dest, src); + for (i = 0; i <= l; i++) { - x = cpu_ldub_data(env, dest + i) & cpu_ldub_data(env, src + i); - if (x) { - cc = 1; - } - cpu_stb_data(env, dest + i, x); + uint8_t x = cpu_ldub_data_ra(env, src + i, ra); + x &= cpu_ldub_data_ra(env, dest + i, ra); + c |= x; + cpu_stb_data_ra(env, dest + i, x, ra); } - return cc; + return c != 0; +} + +uint32_t HELPER(nc)(CPUS390XState *env, uint32_t l, uint64_t dest, + uint64_t src) +{ + return do_helper_nc(env, l, dest, src, GETPC()); } /* xor on array */ @@ -1213,8 +1218,8 @@ uint32_t HELPER(ex)(CPUS390XState *env, uint32_t cc, uint64_t v1, get_address(env, 0, b2, d2)); break; case 0x400: - cc = helper_nc(env, l, get_address(env, 0, b1, d1), - get_address(env, 0, b2, d2)); + cc = do_helper_nc(env, l, get_address(env, 0, b1, d1), + get_address(env, 0, b2, d2), 0); break; case 0x500: cc = helper_clc(env, l, get_address(env, 0, b1, d1), diff --git a/target/s390x/translate.c b/target/s390x/translate.c index d6736e4..7e4cc6c 100644 --- a/target/s390x/translate.c +++ b/target/s390x/translate.c @@ -3043,7 +3043,6 @@ static ExitStatus op_nabsf128(DisasContext *s, DisasOps *o) static ExitStatus op_nc(DisasContext *s, DisasOps *o) { TCGv_i32 l = tcg_const_i32(get_field(s->fields, l1)); - potential_page_fault(s); gen_helper_nc(cc_op, cpu_env, l, o->addr1, o->in2); tcg_temp_free_i32(l); set_cc_static(s); -- 2.9.4