From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from eggs.gnu.org ([2001:4830:134:3::10]:57190) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1c76V0-0006AE-Jw for qemu-devel@nongnu.org; Wed, 16 Nov 2016 15:08:03 -0500 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1c76Ux-0003nI-DS for qemu-devel@nongnu.org; Wed, 16 Nov 2016 15:08:02 -0500 Received: from mx0a-001b2d01.pphosted.com ([148.163.156.1]:58010) by eggs.gnu.org with esmtps (TLS1.0:RSA_AES_256_CBC_SHA1:32) (Exim 4.71) (envelope-from ) id 1c76Ux-0003nC-4w for qemu-devel@nongnu.org; Wed, 16 Nov 2016 15:07:59 -0500 Received: from pps.filterd (m0098410.ppops.net [127.0.0.1]) by mx0a-001b2d01.pphosted.com (8.16.0.17/8.16.0.17) with SMTP id uAGK4Bai127954 for ; Wed, 16 Nov 2016 15:07:58 -0500 Received: from e24smtp03.br.ibm.com (e24smtp03.br.ibm.com [32.104.18.24]) by mx0a-001b2d01.pphosted.com with ESMTP id 26rvx2kjjf-1 (version=TLSv1.2 cipher=AES256-SHA bits=256 verify=NOT) for ; Wed, 16 Nov 2016 15:07:58 -0500 Received: from localhost by e24smtp03.br.ibm.com with IBM ESMTP SMTP Gateway: Authorized Use Only! Violators will be prosecuted for from ; Wed, 16 Nov 2016 18:07:55 -0200 From: Jose Ricardo Ziviani Date: Wed, 16 Nov 2016 18:07:27 -0200 In-Reply-To: <1479326850-8369-1-git-send-email-joserz@linux.vnet.ibm.com> References: <1479326850-8369-1-git-send-email-joserz@linux.vnet.ibm.com> Message-Id: <1479326850-8369-2-git-send-email-joserz@linux.vnet.ibm.com> Subject: [Qemu-devel] [PATCH 1/4] target-ppc: Implement bcdcfsq. 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 bcdcfsq.: Decimal convert from signed quadword. It is possible to convert values less than 10^31-1 or greater than -10^31-1 to be represented in packed decimal format. Signed-off-by: Jose Ricardo Ziviani --- target-ppc/helper.h | 1 + target-ppc/int_helper.c | 48 +++++++++++++++++++++++++++++++++++++ target-ppc/translate/vmx-impl.inc.c | 7 ++++++ 3 files changed, 56 insertions(+) diff --git a/target-ppc/helper.h b/target-ppc/helper.h index da00f0a..87f533c 100644 --- a/target-ppc/helper.h +++ b/target-ppc/helper.h @@ -382,6 +382,7 @@ DEF_HELPER_3(bcdcfn, i32, avr, avr, i32) 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_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 9ac204a..db65a51 100644 --- a/target-ppc/int_helper.c +++ b/target-ppc/int_helper.c @@ -2874,6 +2874,54 @@ uint32_t helper_bcdctz(ppc_avr_t *r, ppc_avr_t *b, uint32_t ps) return cr; } +uint32_t helper_bcdcfsq(ppc_avr_t *r, ppc_avr_t *b, uint32_t ps) +{ + int i; + int cr = 0; + int ox_flag = 0; + uint64_t digit = 0; + uint64_t carry = 0; + uint64_t lo_value = 0; + uint64_t hi_value = 0; + uint64_t max = ULLONG_MAX; + ppc_avr_t ret = { .u64 = { 0, 0 } }; + + if (b->s64[HI_IDX] < 0) { + hi_value = -b->s64[HI_IDX]; + lo_value = b->s64[LO_IDX]; + bcd_put_digit(&ret, 0xD, 0); + } else if (b->s64[HI_IDX] == 0 && b->s64[LO_IDX] < 0) { + lo_value = -b->s64[LO_IDX]; + bcd_put_digit(&ret, 0xD, 0); + } else { + hi_value = b->s64[HI_IDX]; + lo_value = b->s64[LO_IDX]; + bcd_put_digit(&ret, bcd_preferred_sgn(0, ps), 0); + } + + if (unlikely(hi_value > 0x7e37be2022)) { + ox_flag = 1; + } + + carry = hi_value; + for (i = 0; i < 32; i++, max /= 10, lo_value /= 10) { + digit = ((max % 10) * hi_value) + (lo_value % 10) + carry; + carry = (digit > 9) ? digit / 10 : 0; + + bcd_put_digit(&ret, (carry) ? digit % 10 : digit, i + 1); + } + + cr = bcd_cmp_zero(&ret); + + if (unlikely(ox_flag)) { + cr |= 1 << CRF_SO; + } + + *r = ret; + + 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 7143eb3..36141e5 100644 --- a/target-ppc/translate/vmx-impl.inc.c +++ b/target-ppc/translate/vmx-impl.inc.c @@ -989,10 +989,14 @@ GEN_BCD2(bcdcfn) GEN_BCD2(bcdctn) GEN_BCD2(bcdcfz) GEN_BCD2(bcdctz) +GEN_BCD2(bcdcfsq) static void gen_xpnd04_1(DisasContext *ctx) { switch (opc4(ctx->opcode)) { + case 2: + gen_bcdcfsq(ctx); + break; case 4: gen_bcdctz(ctx); break; @@ -1014,6 +1018,9 @@ static void gen_xpnd04_1(DisasContext *ctx) static void gen_xpnd04_2(DisasContext *ctx) { switch (opc4(ctx->opcode)) { + case 2: + gen_bcdcfsq(ctx); + break; case 4: gen_bcdctz(ctx); break; -- 2.7.4