From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from eggs.gnu.org ([2001:4830:134:3::10]:46586) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1Zjl7G-0002ZO-TP for qemu-devel@nongnu.org; Wed, 07 Oct 2015 05:34:34 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1Zjl7D-0005CX-Lb for qemu-devel@nongnu.org; Wed, 07 Oct 2015 05:34:30 -0400 Received: from mail-pa0-x236.google.com ([2607:f8b0:400e:c03::236]:33867) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1Zjl7D-0005Bz-9L for qemu-devel@nongnu.org; Wed, 07 Oct 2015 05:34:27 -0400 Received: by padhy16 with SMTP id hy16so16520172pad.1 for ; Wed, 07 Oct 2015 02:34:27 -0700 (PDT) Sender: Richard Henderson From: Richard Henderson Date: Wed, 7 Oct 2015 20:33:15 +1100 Message-Id: <1444210397-20679-18-git-send-email-rth@twiddle.net> In-Reply-To: <1444210397-20679-1-git-send-email-rth@twiddle.net> References: <1444210397-20679-1-git-send-email-rth@twiddle.net> Subject: [Qemu-devel] [PULL 17/19] target-tilegx: Implement v2mults instruction List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , To: qemu-devel@nongnu.org Cc: peter.maydell@linaro.org, Chen Gang From: Chen Gang Signed-off-by: Chen Gang Message-Id: <1443956491-26850-3-git-send-email-gang.chen.5i5j@gmail.com> Signed-off-by: Richard Henderson --- target-tilegx/helper.h | 1 + target-tilegx/simd_helper.c | 15 +++++++++++++++ target-tilegx/translate.c | 4 ++++ 3 files changed, 20 insertions(+) diff --git a/target-tilegx/helper.h b/target-tilegx/helper.h index c58ee20..bbcc476 100644 --- a/target-tilegx/helper.h +++ b/target-tilegx/helper.h @@ -16,6 +16,7 @@ DEF_HELPER_FLAGS_2(v2int_h, TCG_CALL_NO_RWG_SE, i64, i64, i64) DEF_HELPER_FLAGS_2(v2int_l, TCG_CALL_NO_RWG_SE, i64, i64, i64) DEF_HELPER_FLAGS_2(v1multu, TCG_CALL_NO_RWG_SE, i64, i64, i64) +DEF_HELPER_FLAGS_2(v2mults, TCG_CALL_NO_RWG_SE, i64, i64, i64) DEF_HELPER_FLAGS_2(v1shl, TCG_CALL_NO_RWG_SE, i64, i64, i64) DEF_HELPER_FLAGS_2(v1shru, TCG_CALL_NO_RWG_SE, i64, i64, i64) DEF_HELPER_FLAGS_2(v1shrs, TCG_CALL_NO_RWG_SE, i64, i64, i64) diff --git a/target-tilegx/simd_helper.c b/target-tilegx/simd_helper.c index d294671..6d7bb5c 100644 --- a/target-tilegx/simd_helper.c +++ b/target-tilegx/simd_helper.c @@ -41,6 +41,21 @@ uint64_t helper_v1multu(uint64_t a, uint64_t b) return r; } +uint64_t helper_v2mults(uint64_t a, uint64_t b) +{ + uint64_t r = 0; + int i; + + /* While the instruction talks about signed inputs, with a + truncated result the sign of the inputs doesn't matter. */ + for (i = 0; i < 64; i += 16) { + unsigned ae = extract64(a, i, 16); + unsigned be = extract64(b, i, 16); + r = deposit64(r, i, 16, ae * be); + } + return r; +} + uint64_t helper_v1shl(uint64_t a, uint64_t b) { uint64_t m; diff --git a/target-tilegx/translate.c b/target-tilegx/translate.c index 034cbc2..eb2d0b1 100644 --- a/target-tilegx/translate.c +++ b/target-tilegx/translate.c @@ -1355,7 +1355,11 @@ static TileExcp gen_rrr_opcode(DisasContext *dc, unsigned opext, case OE_RRR(V2MNZ, 0, X1): case OE_RRR(V2MULFSC, 0, X0): case OE_RRR(V2MULS, 0, X0): + return TILEGX_EXCP_OPCODE_UNIMPLEMENTED; case OE_RRR(V2MULTS, 0, X0): + gen_helper_v2mults(tdest, tsrca, tsrcb); + mnemonic = "v2mults"; + break; case OE_RRR(V2MZ, 0, X0): case OE_RRR(V2MZ, 0, X1): case OE_RRR(V2PACKH, 0, X0): -- 2.4.3