From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from eggs.gnu.org ([2001:4830:134:3::10]:45567) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1c49ce-0002Jo-G4 for qemu-devel@nongnu.org; Tue, 08 Nov 2016 11:51:45 -0500 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1c49cb-0004hN-Di for qemu-devel@nongnu.org; Tue, 08 Nov 2016 11:51:44 -0500 Received: from mx0b-001b2d01.pphosted.com ([148.163.158.5]:45677 helo=mx0a-001b2d01.pphosted.com) by eggs.gnu.org with esmtps (TLS1.0:RSA_AES_256_CBC_SHA1:32) (Exim 4.71) (envelope-from ) id 1c49cb-0004hF-97 for qemu-devel@nongnu.org; Tue, 08 Nov 2016 11:51:41 -0500 Received: from pps.filterd (m0098421.ppops.net [127.0.0.1]) by mx0a-001b2d01.pphosted.com (8.16.0.17/8.16.0.17) with SMTP id uA8GmYve030013 for ; Tue, 8 Nov 2016 11:51:40 -0500 Received: from e24smtp01.br.ibm.com (e24smtp01.br.ibm.com [32.104.18.85]) by mx0a-001b2d01.pphosted.com with ESMTP id 26kh3mdmc9-1 (version=TLSv1.2 cipher=AES256-SHA bits=256 verify=NOT) for ; Tue, 08 Nov 2016 11:51:40 -0500 Received: from localhost by e24smtp01.br.ibm.com with IBM ESMTP SMTP Gateway: Authorized Use Only! Violators will be prosecuted for from ; Tue, 8 Nov 2016 14:51:36 -0200 From: Jose Ricardo Ziviani Date: Tue, 8 Nov 2016 14:50:25 -0200 In-Reply-To: <1478623825-8460-1-git-send-email-joserz@linux.vnet.ibm.com> References: <1478623825-8460-1-git-send-email-joserz@linux.vnet.ibm.com> Message-Id: <1478623825-8460-5-git-send-email-joserz@linux.vnet.ibm.com> Subject: [Qemu-devel] [PATCH v5 4/4] target-ppc: Implement bcdctz. 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 bcdctz. converts from BCD to Zoned numeric format. Zoned format uses a byte to represent a digit where the most significant nibble is 0x3 or 0xf, depending on the preferred signal. Signed-off-by: Jose Ricardo Ziviani --- target-ppc/helper.h | 1 + target-ppc/int_helper.c | 43 +++++++++++++++++++++++++++++++++++++ target-ppc/translate/vmx-impl.inc.c | 7 ++++++ 3 files changed, 51 insertions(+) diff --git a/target-ppc/helper.h b/target-ppc/helper.h index 8546bb9..5412da5 100644 --- a/target-ppc/helper.h +++ b/target-ppc/helper.h @@ -374,6 +374,7 @@ DEF_HELPER_4(bcdsub, i32, avr, avr, avr, i32) 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_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 3ecf9d6..c107cee 100644 --- a/target-ppc/int_helper.c +++ b/target-ppc/int_helper.c @@ -2768,6 +2768,49 @@ uint32_t helper_bcdcfz(ppc_avr_t *r, ppc_avr_t *b, uint32_t ps) return cr; } +uint32_t helper_bcdctz(ppc_avr_t *r, ppc_avr_t *b, uint32_t ps) +{ + int i; + int cr = 0; + uint8_t digit = 0; + int sgnb = bcd_get_sgn(b); + int zone_lead = (ps) ? 0xF0 : 0x30; + int invalid = (sgnb == 0); + ppc_avr_t ret = { .u64 = { 0, 0 } }; + + int ox_flag = ((b->u64[HI_IDX] >> 4) != 0); + + for (i = 0; i < 16; i++) { + digit = bcd_get_digit(b, i + 1, &invalid); + + if (unlikely(invalid)) { + break; + } + + ret.u8[BCD_DIG_BYTE(i * 2)] = zone_lead + digit; + } + + if (ps) { + bcd_put_digit(&ret, (sgnb == 1) ? 0xC : 0xD, 1); + } else { + bcd_put_digit(&ret, (sgnb == 1) ? 0x3 : 0x7, 1); + } + + cr = bcd_cmp_zero(b); + + if (ox_flag) { + cr |= 1 << CRF_SO; + } + + if (unlikely(invalid)) { + 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 7e902a9..b05c874 100644 --- a/target-ppc/translate/vmx-impl.inc.c +++ b/target-ppc/translate/vmx-impl.inc.c @@ -973,10 +973,14 @@ GEN_BCD(bcdsub) GEN_BCD2(bcdcfn) GEN_BCD2(bcdctn) GEN_BCD2(bcdcfz) +GEN_BCD2(bcdctz) static void gen_xpnd04_1(DisasContext *ctx) { switch (opc4(ctx->opcode)) { + case 4: + gen_bcdctz(ctx); + break; case 5: gen_bcdctn(ctx); break; @@ -995,6 +999,9 @@ static void gen_xpnd04_1(DisasContext *ctx) static void gen_xpnd04_2(DisasContext *ctx) { switch (opc4(ctx->opcode)) { + case 4: + gen_bcdctz(ctx); + break; case 6: gen_bcdcfz(ctx); break; -- 2.7.4