From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from eggs.gnu.org ([208.118.235.92]:57991) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1UMslp-0003Gk-4E for qemu-devel@nongnu.org; Tue, 02 Apr 2013 00:24:33 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1UMsll-0007QF-CK for qemu-devel@nongnu.org; Tue, 02 Apr 2013 00:24:29 -0400 Received: from mail-gg0-x229.google.com ([2607:f8b0:4002:c02::229]:37123) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1UMsll-0007QB-5r for qemu-devel@nongnu.org; Tue, 02 Apr 2013 00:24:25 -0400 Received: by mail-gg0-f169.google.com with SMTP id j5so3171ggn.14 for ; Mon, 01 Apr 2013 21:24:24 -0700 (PDT) Sender: Richard Henderson From: Richard Henderson Date: Mon, 1 Apr 2013 21:23:20 -0700 Message-Id: <1364876610-3933-18-git-send-email-rth@twiddle.net> In-Reply-To: <1364876610-3933-1-git-send-email-rth@twiddle.net> References: <1364876610-3933-1-git-send-email-rth@twiddle.net> Subject: [Qemu-devel] [PATCH v3 17/27] tcg-ppc64: Implement bswap64 List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , To: qemu-devel@nongnu.org Cc: av1474@comtv.ru, agraf@suse.de, aurelien@aurel32.net Reviewed-by: Aurelien Jarno Signed-off-by: Richard Henderson --- tcg/ppc64/tcg-target.c | 35 +++++++++++++++++++++++++++++++++++ tcg/ppc64/tcg-target.h | 2 +- 2 files changed, 36 insertions(+), 1 deletion(-) diff --git a/tcg/ppc64/tcg-target.c b/tcg/ppc64/tcg-target.c index d8131ec..1806364 100644 --- a/tcg/ppc64/tcg-target.c +++ b/tcg/ppc64/tcg-target.c @@ -1706,6 +1706,40 @@ static void tcg_out_op (TCGContext *s, TCGOpcode opc, const TCGArg *args, } break; + case INDEX_op_bswap64_i64: + a0 = args[0], a1 = args[1], a2 = 0; + if (a0 == a1) { + a0 = 0; + a2 = a1; + } + + /* a1 = # abcd efgh */ + /* a0 = rl32(a1, 8) # 0000 fghe */ + tcg_out_rlw(s, RLWINM, a0, a1, 8, 0, 31); + /* a0 = dep(a0, rl32(a1, 24), 0xff000000) # 0000 hghe */ + tcg_out_rlw(s, RLWIMI, a0, a1, 24, 0, 7); + /* a0 = dep(a0, rl32(a1, 24), 0x0000ff00) # 0000 hgfe */ + tcg_out_rlw(s, RLWIMI, a0, a1, 24, 16, 23); + + /* a0 = rl64(a0, 32) # hgfe 0000 */ + /* a2 = rl64(a1, 32) # efgh abcd */ + tcg_out_rld(s, RLDICL, a0, a0, 32, 0); + tcg_out_rld(s, RLDICL, a2, a1, 32, 0); + + /* a0 = dep(a0, rl32(a2, 8), 0xffffffff) # hgfe bcda */ + tcg_out_rlw(s, RLWIMI, a0, a2, 8, 0, 31); + /* a0 = dep(a0, rl32(a2, 24), 0xff000000) # hgfe dcda */ + tcg_out_rlw(s, RLWIMI, a0, a2, 24, 0, 7); + /* a0 = dep(a0, rl32(a2, 24), 0x0000ff00) # hgfe dcba */ + tcg_out_rlw(s, RLWIMI, a0, a2, 24, 16, 23); + + if (a0 == 0) { + tcg_out_mov(s, TCG_TYPE_I64, args[0], a0); + /* Revert the source rotate that we performed above. */ + tcg_out_rld(s, RLDICL, a1, a1, 32, 0); + } + break; + default: tcg_dump_ops (s); tcg_abort (); @@ -1816,6 +1850,7 @@ static const TCGTargetOpDef ppc_op_defs[] = { { INDEX_op_bswap16_i64, { "r", "r" } }, { INDEX_op_bswap32_i32, { "r", "r" } }, { INDEX_op_bswap32_i64, { "r", "r" } }, + { INDEX_op_bswap64_i64, { "r", "r" } }, { -1 }, }; diff --git a/tcg/ppc64/tcg-target.h b/tcg/ppc64/tcg-target.h index bd011b8..d8e1820 100644 --- a/tcg/ppc64/tcg-target.h +++ b/tcg/ppc64/tcg-target.h @@ -102,7 +102,7 @@ typedef enum { #define TCG_TARGET_HAS_ext32u_i64 1 #define TCG_TARGET_HAS_bswap16_i64 1 #define TCG_TARGET_HAS_bswap32_i64 1 -#define TCG_TARGET_HAS_bswap64_i64 0 +#define TCG_TARGET_HAS_bswap64_i64 1 #define TCG_TARGET_HAS_not_i64 1 #define TCG_TARGET_HAS_neg_i64 1 #define TCG_TARGET_HAS_andc_i64 0 -- 1.8.1.4