From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from eggs.gnu.org ([2001:4830:134:3::10]:46250) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1Zjl6T-0001CO-NT for qemu-devel@nongnu.org; Wed, 07 Oct 2015 05:33:42 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1Zjl6S-0004v6-GA for qemu-devel@nongnu.org; Wed, 07 Oct 2015 05:33:41 -0400 Received: from mail-pa0-x22e.google.com ([2607:f8b0:400e:c03::22e]:35167) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1Zjl6S-0004uu-Ap for qemu-devel@nongnu.org; Wed, 07 Oct 2015 05:33:40 -0400 Received: by pacfv12 with SMTP id fv12so16782717pac.2 for ; Wed, 07 Oct 2015 02:33:40 -0700 (PDT) Sender: Richard Henderson From: Richard Henderson Date: Wed, 7 Oct 2015 20:33:03 +1100 Message-Id: <1444210397-20679-6-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 05/19] target-tilegx: Implement crc instructions List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , To: qemu-devel@nongnu.org Cc: peter.maydell@linaro.org Signed-off-by: Richard Henderson --- target-tilegx/helper.c | 19 +++++++++++++++++++ target-tilegx/helper.h | 2 ++ target-tilegx/translate.c | 8 +++++++- 3 files changed, 28 insertions(+), 1 deletion(-) diff --git a/target-tilegx/helper.c b/target-tilegx/helper.c index a01bb8d..cad5dae 100644 --- a/target-tilegx/helper.c +++ b/target-tilegx/helper.c @@ -21,6 +21,7 @@ #include "cpu.h" #include "qemu-common.h" #include "exec/helper-proto.h" +#include /* For crc32 */ void helper_exception(CPUTLGState *env, uint32_t excp) { @@ -78,3 +79,21 @@ uint64_t helper_shufflebytes(uint64_t dest, uint64_t srca, uint64_t srcb) return vdst; } + +uint64_t helper_crc32_8(uint64_t accum, uint64_t input) +{ + uint8_t buf = input; + + /* zlib crc32 converts the accumulator and output to one's complement. */ + return crc32(accum ^ 0xffffffff, &buf, 1) ^ 0xffffffff; +} + +uint64_t helper_crc32_32(uint64_t accum, uint64_t input) +{ + uint8_t buf[4]; + + stl_le_p(buf, input); + + /* zlib crc32 converts the accumulator and output to one's complement. */ + return crc32(accum ^ 0xffffffff, buf, 4) ^ 0xffffffff; +} diff --git a/target-tilegx/helper.h b/target-tilegx/helper.h index d380d3b..72c8e92 100644 --- a/target-tilegx/helper.h +++ b/target-tilegx/helper.h @@ -4,6 +4,8 @@ DEF_HELPER_FLAGS_1(cnttz, TCG_CALL_NO_RWG_SE, i64, i64) DEF_HELPER_FLAGS_1(pcnt, TCG_CALL_NO_RWG_SE, i64, i64) DEF_HELPER_FLAGS_1(revbits, TCG_CALL_NO_RWG_SE, i64, i64) DEF_HELPER_FLAGS_3(shufflebytes, TCG_CALL_NO_RWG_SE, i64, i64, i64, i64) +DEF_HELPER_FLAGS_2(crc32_8, TCG_CALL_NO_RWG_SE, i64, i64, i64) +DEF_HELPER_FLAGS_2(crc32_32, 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(v1shl, TCG_CALL_NO_RWG_SE, i64, i64, i64) diff --git a/target-tilegx/translate.c b/target-tilegx/translate.c index 6bfb1af..3e5a8ea 100644 --- a/target-tilegx/translate.c +++ b/target-tilegx/translate.c @@ -750,9 +750,15 @@ static TileExcp gen_rrr_opcode(DisasContext *dc, unsigned opext, case OE_RRR(CMULHR, 0, X0): case OE_RRR(CMULH, 0, X0): case OE_RRR(CMUL, 0, X0): + return TILEGX_EXCP_OPCODE_UNIMPLEMENTED; case OE_RRR(CRC32_32, 0, X0): + gen_helper_crc32_32(tdest, tsrca, tsrcb); + mnemonic = "crc32_32"; + break; case OE_RRR(CRC32_8, 0, X0): - return TILEGX_EXCP_OPCODE_UNIMPLEMENTED; + gen_helper_crc32_8(tdest, tsrca, tsrcb); + mnemonic = "crc32_8"; + break; case OE_RRR(DBLALIGN2, 0, X0): case OE_RRR(DBLALIGN2, 0, X1): gen_dblaligni(tdest, tsrca, tsrcb, 16); -- 2.4.3