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[81.2.115.148]) by smtp.gmail.com with ESMTPSA id z135sm2596784wmc.45.2019.06.06.10.46.26 (version=TLS1_2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128/128); Thu, 06 Jun 2019 10:46:26 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linaro.org; s=google; h=from:to:cc:subject:date:message-id:in-reply-to:references :mime-version:content-transfer-encoding; bh=SqWr88JmOAGI6frdEkmtZ44krQlgsO0nSdjyrz4VGyg=; b=Zz61whG9O7K9HTb414mdrU89nSEyewjhCilA30j+pdjTslp1Vog/Uu+q/kTfsZ3JgY a1m3LHESmS9Uakee8rwobhWsHi3iwmOIOUDyEWvIT9Vkv1Jnga1prUPzThdSSwD+vOUW otU0yMdx04wwRLI4lJ5PRZLlwy/8Jtz2DMeVeQmVpLYS2gYTiWg8AGgUMKarFEXV0iDf aoztRMAk7+2G3ZOTEfin3vsc3iC0DnBnNARGX57JSV1hj8WkMVWaY7QmXMtqhYaZzzn5 tDqGjEfRI54EWzVSAjKTqXn8UTPdYcA4Y/eOtUBkGpGE3ykJuwp3dHqGZoYBqclWRRkN 8ogw== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:from:to:cc:subject:date:message-id:in-reply-to :references:mime-version:content-transfer-encoding; bh=SqWr88JmOAGI6frdEkmtZ44krQlgsO0nSdjyrz4VGyg=; b=YqGsu7rbXwzXCNxXKVz8kluzuzvVHAyx36KF4kHMm9vIKmOvcvMtZyzVjNmSCarNYj 2qvKljfQyC00c51hGc1iKAjpfJLkMDn4vm8dhYYeA0Q8bH23fX8ZUiDtO1khbeXVvcQl tuFpaw0Aun4oKzSjbDsRw5EX8yN1AksHfZ14z/Ap/tdSmHcMNVpPGyg9Ly8V634jLKNE HZSJqkTYFyzFjEyscSvTbkCxvVLWpI4dGxSlCerkksnH3k9fh/DM4x4rlY9ifKCmjZ5e DbQ8ry0BPAiuuJOgrIKpW+sUWr2/MRfr9oMVqW77jhy2M41mGHtT316jGliOlwqxVBXY byQg== X-Gm-Message-State: APjAAAV2OAC7XDJirojg0sR79vfSUOXD7JQeitsZvU9202xR1WpOMZxw jVjoEJf9kmwyxD0iQEmQhjomcQ== X-Google-Smtp-Source: APXvYqxQ20CCRqBX+hurKTAYNqOxiQFO22Lp+dbFY1lx3/mXHKFBrZmlIqr9TSMMx/8tdRTfOb6rvg== X-Received: by 2002:a5d:4b49:: with SMTP id w9mr6084238wrs.113.1559843187147; Thu, 06 Jun 2019 10:46:27 -0700 (PDT) From: Peter Maydell To: qemu-arm@nongnu.org, qemu-devel@nongnu.org Date: Thu, 6 Jun 2019 18:45:41 +0100 Message-Id: <20190606174609.20487-15-peter.maydell@linaro.org> X-Mailer: git-send-email 2.20.1 In-Reply-To: <20190606174609.20487-1-peter.maydell@linaro.org> References: <20190606174609.20487-1-peter.maydell@linaro.org> MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable X-detected-operating-system: by eggs.gnu.org: Genre and OS details not recognized. X-Received-From: 2a00:1450:4864:20::442 Subject: [Qemu-devel] [PATCH 14/42] target/arm: Convert VFP two-register transfer insns to decodetree X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.21 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Richard Henderson Errors-To: qemu-devel-bounces+importer=patchew.org@nongnu.org Sender: "Qemu-devel" X-ZohoMail-DKIM: fail (Header signature does not verify) Content-Type: text/plain; charset="utf-8" Convert the VFP two-register transfer instructions to decodetree (in the v8 Arm ARM these are the "Advanced SIMD and floating-point 64-bit move" encoding group). Again, we expand out the sequences involving gen_vfp_msr() and gen_msr_vfp(). Signed-off-by: Peter Maydell Reviewed-by: Richard Henderson --- target/arm/translate-vfp.inc.c | 70 ++++++++++++++++++++++++++++++++++ target/arm/translate.c | 46 +--------------------- target/arm/vfp.decode | 5 +++ 3 files changed, 77 insertions(+), 44 deletions(-) diff --git a/target/arm/translate-vfp.inc.c b/target/arm/translate-vfp.inc.c index 74c10f9024b..5f081221b83 100644 --- a/target/arm/translate-vfp.inc.c +++ b/target/arm/translate-vfp.inc.c @@ -783,3 +783,73 @@ static bool trans_VMOV_single(DisasContext *s, arg_VMO= V_single *a) =20 return true; } + +static bool trans_VMOV_64_sp(DisasContext *s, arg_VMOV_64_sp *a) +{ + TCGv_i32 tmp; + + /* + * VMOV between two general-purpose registers and two single precision + * floating point registers + */ + if (!vfp_access_check(s)) { + return true; + } + + if (a->op) { + /* fpreg to gpreg */ + tmp =3D tcg_temp_new_i32(); + neon_load_reg32(tmp, a->vm); + store_reg(s, a->rt, tmp); + tmp =3D tcg_temp_new_i32(); + neon_load_reg32(tmp, a->vm + 1); + store_reg(s, a->rt2, tmp); + } else { + /* gpreg to fpreg */ + tmp =3D load_reg(s, a->rt); + neon_store_reg32(tmp, a->vm); + tmp =3D load_reg(s, a->rt2); + neon_store_reg32(tmp, a->vm + 1); + } + + return true; +} + +static bool trans_VMOV_64_dp(DisasContext *s, arg_VMOV_64_sp *a) +{ + TCGv_i32 tmp; + + /* + * VMOV between two general-purpose registers and one double precision + * floating point register + */ + + /* UNDEF accesses to D16-D31 if they don't exist */ + if (!dc_isar_feature(aa32_fp_d32, s) && (a->vm & 0x10)) { + return false; + } + + if (!vfp_access_check(s)) { + return true; + } + + if (a->op) { + /* fpreg to gpreg */ + tmp =3D tcg_temp_new_i32(); + neon_load_reg32(tmp, a->vm * 2); + store_reg(s, a->rt, tmp); + tmp =3D tcg_temp_new_i32(); + neon_load_reg32(tmp, a->vm * 2 + 1); + store_reg(s, a->rt2, tmp); + } else { + /* gpreg to fpreg */ + tmp =3D load_reg(s, a->rt); + neon_store_reg32(tmp, a->vm * 2); + tcg_temp_free_i32(tmp); + tmp =3D load_reg(s, a->rt2); + neon_store_reg32(tmp, a->vm * 2 + 1); + tcg_temp_free_i32(tmp); + } + + return true; +} diff --git a/target/arm/translate.c b/target/arm/translate.c index 6bb0e994cc5..a57d972eaa7 100644 --- a/target/arm/translate.c +++ b/target/arm/translate.c @@ -3703,50 +3703,8 @@ static int disas_vfp_insn(DisasContext *s, uint32_t = insn) case 0xc: case 0xd: if ((insn & 0x03e00000) =3D=3D 0x00400000) { - /* two-register transfer */ - rn =3D (insn >> 16) & 0xf; - rd =3D (insn >> 12) & 0xf; - if (dp) { - VFP_DREG_M(rm, insn); - } else { - rm =3D VFP_SREG_M(insn); - } - - if (insn & ARM_CP_RW_BIT) { - /* vfp->arm */ - if (dp) { - gen_mov_F0_vreg(0, rm * 2); - tmp =3D gen_vfp_mrs(); - store_reg(s, rd, tmp); - gen_mov_F0_vreg(0, rm * 2 + 1); - tmp =3D gen_vfp_mrs(); - store_reg(s, rn, tmp); - } else { - gen_mov_F0_vreg(0, rm); - tmp =3D gen_vfp_mrs(); - store_reg(s, rd, tmp); - gen_mov_F0_vreg(0, rm + 1); - tmp =3D gen_vfp_mrs(); - store_reg(s, rn, tmp); - } - } else { - /* arm->vfp */ - if (dp) { - tmp =3D load_reg(s, rd); - gen_vfp_msr(tmp); - gen_mov_vreg_F0(0, rm * 2); - tmp =3D load_reg(s, rn); - gen_vfp_msr(tmp); - gen_mov_vreg_F0(0, rm * 2 + 1); - } else { - tmp =3D load_reg(s, rd); - gen_vfp_msr(tmp); - gen_mov_vreg_F0(0, rm); - tmp =3D load_reg(s, rn); - gen_vfp_msr(tmp); - gen_mov_vreg_F0(0, rm + 1); - } - } + /* Already handled by decodetree */ + return 1; } else { /* Load/store */ rn =3D (insn >> 16) & 0xf; diff --git a/target/arm/vfp.decode b/target/arm/vfp.decode index bb7de403df3..134f1c9ef58 100644 --- a/target/arm/vfp.decode +++ b/target/arm/vfp.decode @@ -66,3 +66,8 @@ VDUP ---- 1110 1 b:1 q:1 0 .... rt:4 1011 . 0 e:1= 1 0000 \ VMSR_VMRS ---- 1110 111 l:1 reg:4 rt:4 1010 0001 0000 VMOV_single ---- 1110 000 l:1 .... rt:4 1010 . 001 0000 \ vn=3D%vn_sp + +VMOV_64_sp ---- 1100 010 op:1 rt2:4 rt:4 1010 00.1 .... \ + vm=3D%vm_sp +VMOV_64_dp ---- 1100 010 op:1 rt2:4 rt:4 1011 00.1 .... \ + vm=3D%vm_dp --=20 2.20.1