From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mailman by lists.gnu.org with tmda-scanned (Exim 4.43) id 1LWIKK-0001Cd-VK for qemu-devel@nongnu.org; Sun, 08 Feb 2009 17:40:37 -0500 Received: from exim by lists.gnu.org with spam-scanned (Exim 4.43) id 1LWIKJ-0001Bh-RK for qemu-devel@nongnu.org; Sun, 08 Feb 2009 17:40:36 -0500 Received: from [199.232.76.173] (port=50692 helo=monty-python.gnu.org) by lists.gnu.org with esmtp (Exim 4.43) id 1LWIKJ-0001BR-HG for qemu-devel@nongnu.org; Sun, 08 Feb 2009 17:40:35 -0500 Received: from mx20.gnu.org ([199.232.41.8]:62950) by monty-python.gnu.org with esmtps (TLS-1.0:RSA_AES_256_CBC_SHA1:32) (Exim 4.60) (envelope-from ) id 1LWIKJ-0006hs-6S for qemu-devel@nongnu.org; Sun, 08 Feb 2009 17:40:35 -0500 Received: from mail.codesourcery.com ([65.74.133.4]) by mx20.gnu.org with esmtp (Exim 4.60) (envelope-from ) id 1LWIKI-0005eX-Dt for qemu-devel@nongnu.org; Sun, 08 Feb 2009 17:40:34 -0500 Date: Sun, 8 Feb 2009 14:40:33 -0800 From: Nathan Froyd Subject: Re: [Qemu-devel] [PATCH 12/14] Add vct{u,s}xs instructions Message-ID: <20090208224033.GR15286@codesourcery.com> References: <1232657054-30100-1-git-send-email-froydnj@codesourcery.com> <1232657054-30100-13-git-send-email-froydnj@codesourcery.com> <20090204144623.GE19995@volta.aurel32.net> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20090204144623.GE19995@volta.aurel32.net> Reply-To: qemu-devel@nongnu.org List-Id: qemu-devel.nongnu.org List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , To: qemu-devel@nongnu.org Use round-to-zero mode for conversion, convert to int64_t in all cases, and properly set VSCR_SAT for negative values in vctuxs. Signed-off-by: Nathan Froyd --- target-ppc/helper.h | 2 ++ target-ppc/op_helper.c | 27 +++++++++++++++++++++++++++ target-ppc/translate.c | 2 ++ 3 files changed, 31 insertions(+), 0 deletions(-) diff --git a/target-ppc/helper.h b/target-ppc/helper.h index 089955b..3ee04b2 100644 --- a/target-ppc/helper.h +++ b/target-ppc/helper.h @@ -253,6 +253,8 @@ DEF_HELPER_2(vrfip, void, avr, avr) DEF_HELPER_2(vrfiz, void, avr, avr) DEF_HELPER_3(vcfux, void, avr, avr, i32) DEF_HELPER_3(vcfsx, void, avr, avr, i32) +DEF_HELPER_3(vctuxs, void, avr, avr, i32) +DEF_HELPER_3(vctsxs, void, avr, avr, i32) DEF_HELPER_1(efscfsi, i32, i32) DEF_HELPER_1(efscfui, i32, i32) diff --git a/target-ppc/op_helper.c b/target-ppc/op_helper.c index d40caf0..e4c446d 100644 --- a/target-ppc/op_helper.c +++ b/target-ppc/op_helper.c @@ -2288,6 +2288,33 @@ void helper_vcmpbfp_dot (ppc_avr_t *r, ppc_avr_t *a, ppc_avr_t *b) vcmpbfp_internal(r, a, b, 1); } +#define VCT(suffix, satcvt, element) \ + void helper_vct##suffix (ppc_avr_t *r, ppc_avr_t *b, uint32_t uim) \ + { \ + int i; \ + int sat = 0; \ + float_status s = env->vec_status; \ + set_float_rounding_mode(float_round_to_zero, &s); \ + for (i = 0; i < ARRAY_SIZE(r->f); i++) { \ + if (float32_is_nan(b->f[i]) || \ + float32_is_signaling_nan(b->f[i])) { \ + r->element[i] = 0; \ + } else { \ + float64 t = float32_to_float64(b->f[i], &s); \ + int64_t j; \ + t = float64_scalbn(t, uim, &s); \ + j = float64_to_int64(t, &s); \ + r->element[i] = satcvt(j, &sat); \ + } \ + } \ + if (sat) { \ + env->vscr |= (1 << VSCR_SAT); \ + } \ + } +VCT(uxs, cvtsduw, u32) +VCT(sxs, cvtsdsw, s32) +#undef VCT + void helper_vmaddfp (ppc_avr_t *r, ppc_avr_t *a, ppc_avr_t *b, ppc_avr_t *c) { int i; diff --git a/target-ppc/translate.c b/target-ppc/translate.c index a722f65..4d5b45a 100644 --- a/target-ppc/translate.c +++ b/target-ppc/translate.c @@ -6521,6 +6521,8 @@ GEN_VXFORM_UIMM(vsplth, 6, 9); GEN_VXFORM_UIMM(vspltw, 6, 10); GEN_VXFORM_UIMM(vcfux, 5, 12); GEN_VXFORM_UIMM(vcfsx, 5, 13); +GEN_VXFORM_UIMM(vctuxs, 5, 14); +GEN_VXFORM_UIMM(vctsxs, 5, 15); GEN_HANDLER(vsldoi, 0x04, 0x16, 0xFF, 0x00000400, PPC_ALTIVEC) { -- 1.6.0.5