From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from eggs.gnu.org ([2001:4830:134:3::10]:50244) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1cA7aH-0001tf-5d for qemu-devel@nongnu.org; Thu, 24 Nov 2016 22:54:00 -0500 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1cA7aC-0005Go-RJ for qemu-devel@nongnu.org; Thu, 24 Nov 2016 22:53:57 -0500 Received: from mx0a-001b2d01.pphosted.com ([148.163.156.1]:43746) by eggs.gnu.org with esmtps (TLS1.0:RSA_AES_256_CBC_SHA1:32) (Exim 4.71) (envelope-from ) id 1cA7aC-0005GO-IG for qemu-devel@nongnu.org; Thu, 24 Nov 2016 22:53:52 -0500 Received: from pps.filterd (m0098399.ppops.net [127.0.0.1]) by mx0a-001b2d01.pphosted.com (8.16.0.17/8.16.0.17) with SMTP id uAP3mZYl030119 for ; Thu, 24 Nov 2016 22:53:51 -0500 Received: from e24smtp04.br.ibm.com (e24smtp04.br.ibm.com [32.104.18.25]) by mx0a-001b2d01.pphosted.com with ESMTP id 26xa4w4tqq-1 (version=TLSv1.2 cipher=AES256-SHA bits=256 verify=NOT) for ; Thu, 24 Nov 2016 22:53:51 -0500 Received: from localhost by e24smtp04.br.ibm.com with IBM ESMTP SMTP Gateway: Authorized Use Only! Violators will be prosecuted for from ; Fri, 25 Nov 2016 01:53:48 -0200 From: Jose Ricardo Ziviani Date: Fri, 25 Nov 2016 01:53:31 -0200 In-Reply-To: <1480046013-24788-1-git-send-email-joserz@linux.vnet.ibm.com> References: <1480046013-24788-1-git-send-email-joserz@linux.vnet.ibm.com> Message-Id: <1480046013-24788-3-git-send-email-joserz@linux.vnet.ibm.com> Subject: [Qemu-devel] [PATCH v3 2/4] target-ppc: Implement bcdctsq. instruction List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , To: qemu-ppc@nongnu.org Cc: qemu-devel@nongnu.org, david@gibson.dropbear.id.au, nikunj@linux.vnet.ibm.com, bharata@linux.vnet.ibm.com bcdctsq.: Decimal convert to signed quadword. It is possible to convert packed decimal values to signed quadwords. Signed-off-by: Jose Ricardo Ziviani Reviewed-by: David Gibson --- target-ppc/helper.h | 1 + target-ppc/int_helper.c | 40 +++++++++++++++++++++++++++++++++++++ target-ppc/translate/vmx-impl.inc.c | 7 +++++++ 3 files changed, 48 insertions(+) diff --git a/target-ppc/helper.h b/target-ppc/helper.h index efb384a..d404e0b 100644 --- a/target-ppc/helper.h +++ b/target-ppc/helper.h @@ -383,6 +383,7 @@ DEF_HELPER_3(bcdctn, i32, avr, avr, i32) DEF_HELPER_3(bcdcfz, i32, avr, avr, i32) DEF_HELPER_3(bcdctz, i32, avr, avr, i32) DEF_HELPER_3(bcdcfsq, i32, avr, avr, i32) +DEF_HELPER_3(bcdctsq, i32, avr, avr, i32) DEF_HELPER_2(xsadddp, void, env, i32) DEF_HELPER_2(xssubdp, void, env, i32) diff --git a/target-ppc/int_helper.c b/target-ppc/int_helper.c index 9d753e2..4153f19 100644 --- a/target-ppc/int_helper.c +++ b/target-ppc/int_helper.c @@ -2912,6 +2912,46 @@ uint32_t helper_bcdcfsq(ppc_avr_t *r, ppc_avr_t *b, uint32_t ps) return cr; } +uint32_t helper_bcdctsq(ppc_avr_t *r, ppc_avr_t *b, uint32_t ps) +{ + uint8_t i; + int cr; + uint64_t carry; + uint64_t unused; + uint64_t lo_value; + uint64_t hi_value = 0; + int sgnb = bcd_get_sgn(b); + int invalid = (sgnb == 0); + + lo_value = bcd_get_digit(b, 31, &invalid); + for (i = 30; i > 0; i--) { + mulu64(&lo_value, &carry, lo_value, 10ULL); + mulu64(&hi_value, &unused, hi_value, 10ULL); + lo_value += bcd_get_digit(b, i, &invalid); + hi_value += carry; + + if (unlikely(invalid)) { + break; + } + } + + if (sgnb == -1) { + r->s64[LO_IDX] = -lo_value; + r->s64[HI_IDX] = ~hi_value + !r->s64[LO_IDX]; + } else { + r->s64[LO_IDX] = lo_value; + r->s64[HI_IDX] = hi_value; + } + + cr = bcd_cmp_zero(b); + + if (unlikely(invalid)) { + cr = CRF_SO; + } + + return cr; +} + void helper_vsbox(ppc_avr_t *r, ppc_avr_t *a) { int i; diff --git a/target-ppc/translate/vmx-impl.inc.c b/target-ppc/translate/vmx-impl.inc.c index 36141e5..1579b58 100644 --- a/target-ppc/translate/vmx-impl.inc.c +++ b/target-ppc/translate/vmx-impl.inc.c @@ -990,10 +990,14 @@ GEN_BCD2(bcdctn) GEN_BCD2(bcdcfz) GEN_BCD2(bcdctz) GEN_BCD2(bcdcfsq) +GEN_BCD2(bcdctsq) static void gen_xpnd04_1(DisasContext *ctx) { switch (opc4(ctx->opcode)) { + case 0: + gen_bcdctsq(ctx); + break; case 2: gen_bcdcfsq(ctx); break; @@ -1018,6 +1022,9 @@ static void gen_xpnd04_1(DisasContext *ctx) static void gen_xpnd04_2(DisasContext *ctx) { switch (opc4(ctx->opcode)) { + case 0: + gen_bcdctsq(ctx); + break; case 2: gen_bcdcfsq(ctx); break; -- 2.7.4