From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mailman by lists.gnu.org with tmda-scanned (Exim 4.43) id 1LQA9m-0005uh-Bk for qemu-devel@nongnu.org; Thu, 22 Jan 2009 19:44:22 -0500 Received: from exim by lists.gnu.org with spam-scanned (Exim 4.43) id 1LQA9k-0005uB-KJ for qemu-devel@nongnu.org; Thu, 22 Jan 2009 19:44:21 -0500 Received: from [199.232.76.173] (port=54133 helo=monty-python.gnu.org) by lists.gnu.org with esmtp (Exim 4.43) id 1LQA9k-0005u8-Dg for qemu-devel@nongnu.org; Thu, 22 Jan 2009 19:44:20 -0500 Received: from mx20.gnu.org ([199.232.41.8]:46587) by monty-python.gnu.org with esmtps (TLS-1.0:RSA_AES_256_CBC_SHA1:32) (Exim 4.60) (envelope-from ) id 1LQA9k-0003DS-4F for qemu-devel@nongnu.org; Thu, 22 Jan 2009 19:44:20 -0500 Received: from mail.codesourcery.com ([65.74.133.4]) by mx20.gnu.org with esmtp (Exim 4.60) (envelope-from ) id 1LQA9i-0004E8-VC for qemu-devel@nongnu.org; Thu, 22 Jan 2009 19:44:19 -0500 From: Nathan Froyd Date: Thu, 22 Jan 2009 12:44:07 -0800 Message-Id: <1232657054-30100-8-git-send-email-froydnj@codesourcery.com> In-Reply-To: <1232657054-30100-1-git-send-email-froydnj@codesourcery.com> References: <1232657054-30100-1-git-send-email-froydnj@codesourcery.com> Subject: [Qemu-devel] [PATCH 07/14] Add v{add,sub}fp instructions 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 Cc: Nathan Froyd Split up vaddfp and vsubfp so that we can properly handle magnitude subtraction of infinities. 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 ebdeabe..a5d1972 100644 --- a/target-ppc/helper.h +++ b/target-ppc/helper.h @@ -232,6 +232,8 @@ DEF_HELPER_3(vsum2sws, void, avr, avr, avr) DEF_HELPER_3(vsum4sbs, void, avr, avr, avr) DEF_HELPER_3(vsum4shs, void, avr, avr, avr) DEF_HELPER_3(vsum4ubs, void, avr, avr, avr) +DEF_HELPER_3(vaddfp, void, avr, avr, avr) +DEF_HELPER_3(vsubfp, void, avr, avr, avr) DEF_HELPER_3(vmaxfp, void, avr, avr, avr) DEF_HELPER_3(vminfp, void, avr, avr, avr) diff --git a/target-ppc/op_helper.c b/target-ppc/op_helper.c index 717bbd4..d952113 100644 --- a/target-ppc/op_helper.c +++ b/target-ppc/op_helper.c @@ -2102,6 +2102,33 @@ VARITH(uwm, u32) #undef VARITH_DO #undef VARITH +void helper_vaddfp (ppc_avr_t *r, ppc_avr_t *a, ppc_avr_t *b) +{ + int i; + for (i = 0; i < ARRAY_SIZE(r->f); i++) { + HANDLE_NAN2(r->f[i], a->f[i], b->f[i]) { + r->f[i] = float32_add(a->f[i], b->f[i], &env->vec_status); + } + } +} + +void helper_vsubfp (ppc_avr_t *r, ppc_avr_t *a, ppc_avr_t *b) +{ + int i; + for (i = 0; i < ARRAY_SIZE(r->f); i++) { + HANDLE_NAN2(r->f[i], a->f[i], b->f[i]) { + if (unlikely(float32_is_infinity(a->f[i]) && + float32_is_infinity(b->f[i]) && + float32_is_neg(a->f[i]) == float32_is_neg(b->f[i]))) { + /* Magnitude subtraction of infinities */ + r->u32[i] = 0x7fc00000; + } else { + r->f[i] = float32_sub(a->f[i], b->f[i], &env->vec_status); + } + } + } +} + #define VARITHSAT_CASE(type, op, cvt, element) \ { \ type result = (type)a->element[i] op (type)b->element[i]; \ diff --git a/target-ppc/translate.c b/target-ppc/translate.c index 35693e0..6ff46e0 100644 --- a/target-ppc/translate.c +++ b/target-ppc/translate.c @@ -6395,6 +6395,8 @@ GEN_VXFORM(vsum4sbs, 4, 28); GEN_VXFORM(vsum4shs, 4, 25); GEN_VXFORM(vsum2sws, 4, 26); GEN_VXFORM(vsumsws, 4, 30); +GEN_VXFORM(vaddfp, 5, 0); +GEN_VXFORM(vsubfp, 5, 1); GEN_VXFORM(vmaxfp, 5, 10); GEN_VXFORM(vminfp, 5, 11); -- 1.6.0.5