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[97.113.7.119]) by smtp.gmail.com with ESMTPSA id r27sm21020406pgn.25.2019.08.19.08.17.45 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Mon, 19 Aug 2019 08:17:45 -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; bh=aAsgcvP1KNeiO2DyuHvEBM+1rf528V/HzEzeINYjmQQ=; b=YabwG0qDHJQ3zR8wemiC7oSISh8CtnYF2SufRC1eX5C2WRTHZXnzd9i9BpHaVhS1i2 iMpwDXxZyGK0mj7EFqUf4gTB5rBTvRs7Gms8/fdIafSscK8JrEB3fZ/hcAH1d3hCmgmI VIjqJ2I0cTnhmh93LAaTEqQQCJYxPtOq79Ur7XKtgZ0OUAUpbKS789Hv3uIW+l83H+Hi JQ/OCi6ydmFemLzC99zLwQf2UEktbvSWQk6afWkEBDKiJdn0NfgfKLNv7cAH0dvAbrIL K3DA+5FAOHfFf4cFUqqcL+91XRSSLWV+unSq+e3tJxzTpY0BZcfvDsKl0Gx54J33hdB8 HALw== 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; bh=aAsgcvP1KNeiO2DyuHvEBM+1rf528V/HzEzeINYjmQQ=; b=mJvN5E+d+t4rFVcgcY251/fo2MzdbjMcfWphC3FLGhNzcnoEVkbxpWAol36xnFJBs5 jtvIKtJX4pCkkRRzwxewGDT1gWbGxYBlKx2Isg+R0pD4GPaJZJFL+icRtRRaUIoruhxU UUhm39zTCC7qb4lwDv3VjQGPd0pWSlYKNbDWQV3KHyVfAPzwwSOsdH7qr8pJfA/jpcHu uc7VYXfbw7Gthi7sA3crfeECSlenMwBtZJJMDng3VD9g4XqGR/CeowaIDyNRDCQgAQSz Nl3++CcvFHXduiiQ3hrIcXmaG2rMWC7aD8Qz369n1w8nOVI4gwYrww8Wh1AizprQxd6N lpRA== X-Gm-Message-State: APjAAAUVK4TANPsx4VbWysRVz4U6gDQ+hxCbOkjuLL1K1GcBxejSQiB8 q2PGaacfZrmr1keAc9zjCpZ2XX5Q8ck= X-Google-Smtp-Source: APXvYqzOb3flQFpF/coP68QsC0S0Rp+nwTy6EsLIlNSvOA5qc00fB/LgSUjQkCy+4DF+sB+Ie8k9XQ== X-Received: by 2002:a65:690f:: with SMTP id s15mr19835734pgq.432.1566227866271; Mon, 19 Aug 2019 08:17:46 -0700 (PDT) From: Richard Henderson To: qemu-devel@nongnu.org Date: Mon, 19 Aug 2019 08:17:41 -0700 Message-Id: <20190819151743.17267-2-richard.henderson@linaro.org> X-Mailer: git-send-email 2.17.1 In-Reply-To: <20190819151743.17267-1-richard.henderson@linaro.org> References: <20190819151743.17267-1-richard.henderson@linaro.org> X-detected-operating-system: by eggs.gnu.org: Genre and OS details not recognized. X-Received-From: 2607:f8b0:4864:20::431 Subject: [Qemu-devel] [PULL 1/3] decodetree: Allow !function with no input bits X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: peter.maydell@linaro.org Errors-To: qemu-devel-bounces+importer=patchew.org@nongnu.org Sender: "Qemu-devel" X-ZohoMail-DKIM: fail (Header signature does not verify) Content-Transfer-Encoding: quoted-printable MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Call this form a "parameter", returning a value extracted from the DisasContext. Reviewed-by: Philippe Mathieu-Daude Signed-off-by: Richard Henderson --- docs/devel/decodetree.rst | 8 ++++- scripts/decodetree.py | 49 ++++++++++++++++++++++++------- tests/decode/err_field6.decode | 5 ++++ tests/decode/succ_function.decode | 6 ++++ 4 files changed, 56 insertions(+), 12 deletions(-) create mode 100644 tests/decode/err_field6.decode create mode 100644 tests/decode/succ_function.decode diff --git a/docs/devel/decodetree.rst b/docs/devel/decodetree.rst index 44ac621ea8..ce7f52308f 100644 --- a/docs/devel/decodetree.rst +++ b/docs/devel/decodetree.rst @@ -23,7 +23,7 @@ Fields =20 Syntax:: =20 - field_def :=3D '%' identifier ( unnamed_field )+ ( !function=3Dident= ifier )? + field_def :=3D '%' identifier ( unnamed_field )* ( !function=3Dident= ifier )? unnamed_field :=3D number ':' ( 's' ) number =20 For *unnamed_field*, the first number is the least-significant bit position @@ -34,6 +34,12 @@ present, they are concatenated. In this way one can def= ine disjoint fields. If ``!function`` is specified, the concatenated result is passed through t= he named function, taking and returning an integral value. =20 +One may use ``!function`` with zero ``unnamed_fields``. This case is call= ed +a *parameter*, and the named function is only passed the ``DisasContext`` +and returns an integral value extracted from there. + +A field with no ``unnamed_fields`` and no ``!function`` is in error. + FIXME: the fields of the structure into which this result will be stored is restricted to ``int``. Which means that we cannot expand 64-bit items. =20 diff --git a/scripts/decodetree.py b/scripts/decodetree.py index d7a59d63ac..f6f7368774 100755 --- a/scripts/decodetree.py +++ b/scripts/decodetree.py @@ -245,7 +245,7 @@ class ConstField: =20 =20 class FunctionField: - """Class representing a field passed through an expander""" + """Class representing a field passed through a function""" def __init__(self, func, base): self.mask =3D base.mask self.sign =3D base.sign @@ -266,6 +266,27 @@ class FunctionField: # end FunctionField =20 =20 +class ParameterField: + """Class representing a pseudo-field read from a function""" + def __init__(self, func): + self.mask =3D 0 + self.sign =3D 0 + self.func =3D func + + def __str__(self): + return self.func + + def str_extract(self): + return self.func + '(ctx)' + + def __eq__(self, other): + return self.func =3D=3D other.func + + def __ne__(self, other): + return not self.__eq__(other) +# end ParameterField + + class Arguments: """Class representing the extracted fields of a format""" def __init__(self, nm, flds, extern): @@ -433,17 +454,23 @@ def parse_field(lineno, name, toks): =20 if width > insnwidth: error(lineno, 'field too large') - if len(subs) =3D=3D 1: - f =3D subs[0] + if len(subs) =3D=3D 0: + if func: + f =3D ParameterField(func) + else: + error(lineno, 'field with no value') else: - mask =3D 0 - for s in subs: - if mask & s.mask: - error(lineno, 'field components overlap') - mask |=3D s.mask - f =3D MultiField(subs, mask) - if func: - f =3D FunctionField(func, f) + if len(subs) =3D=3D 1: + f =3D subs[0] + else: + mask =3D 0 + for s in subs: + if mask & s.mask: + error(lineno, 'field components overlap') + mask |=3D s.mask + f =3D MultiField(subs, mask) + if func: + f =3D FunctionField(func, f) =20 if name in fields: error(lineno, 'duplicate field', name) diff --git a/tests/decode/err_field6.decode b/tests/decode/err_field6.decode new file mode 100644 index 0000000000..a719884572 --- /dev/null +++ b/tests/decode/err_field6.decode @@ -0,0 +1,5 @@ +# This work is licensed under the terms of the GNU LGPL, version 2 or late= r. +# See the COPYING.LIB file in the top-level directory. + +# Diagnose no bits in field +%field diff --git a/tests/decode/succ_function.decode b/tests/decode/succ_function= .decode new file mode 100644 index 0000000000..7751b1784e --- /dev/null +++ b/tests/decode/succ_function.decode @@ -0,0 +1,6 @@ +# This work is licensed under the terms of the GNU LGPL, version 2 or late= r. +# See the COPYING.LIB file in the top-level directory. + +# "Field" as parameter pulled from DisasContext. +%foo !function=3Dfoo +foo 00000000000000000000000000000000 %foo --=20 2.17.1 From nobody Tue Nov 11 20:52:15 2025 Delivered-To: importer@patchew.org Received-SPF: pass (zoho.com: domain of gnu.org designates 209.51.188.17 as permitted sender) client-ip=209.51.188.17; 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X-Received-From: 2607:f8b0:4864:20::629 Subject: [Qemu-devel] [PULL 2/3] decodetree: Suppress redundant declaration warnings X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: peter.maydell@linaro.org Errors-To: qemu-devel-bounces+importer=patchew.org@nongnu.org Sender: "Qemu-devel" X-ZohoMail-DKIM: fail (Header signature does not verify) We can tell that a decodetree input file is "secondary" when it uses an argument set marked "!extern". This indicates that at least one of the insn translation functions will have already been declared by the "primary" input file, but given only the secondary we cannot tell which. Avoid redundant declaration warnings by suppressing them with pragmas. Tested-by: Philippe Mathieu-Daud=C3=A9 Reviewed-by: Philippe Mathieu-Daud=C3=A9 Reviewed-by: Alistair Francis Suggested-by: Philippe Mathieu-Daud=C3=A9 Signed-off-by: Richard Henderson --- scripts/decodetree.py | 22 ++++++++++++++++++++++ 1 file changed, 22 insertions(+) diff --git a/scripts/decodetree.py b/scripts/decodetree.py index f6f7368774..d8c59cab60 100755 --- a/scripts/decodetree.py +++ b/scripts/decodetree.py @@ -33,6 +33,7 @@ arguments =3D {} formats =3D {} patterns =3D [] allpatterns =3D [] +anyextern =3D False =20 translate_prefix =3D 'trans' translate_scope =3D 'static ' @@ -482,12 +483,14 @@ def parse_arguments(lineno, name, toks): """Parse one argument set from TOKS at LINENO""" global arguments global re_ident + global anyextern =20 flds =3D [] extern =3D False for t in toks: if re_fullmatch('!extern', t): extern =3D True + anyextern =3D True continue if not re_fullmatch(re_ident, t): error(lineno, 'invalid argument set token "{0}"'.format(t)) @@ -1188,6 +1191,7 @@ def main(): global insnmask global decode_function global variablewidth + global anyextern =20 decode_scope =3D 'static ' =20 @@ -1248,6 +1252,19 @@ def main(): # A single translate function can be invoked for different patterns. # Make sure that the argument sets are the same, and declare the # function only once. + # + # If we're sharing formats, we're likely also sharing trans_* function= s, + # but we can't tell which ones. Prevent issues from the compiler by + # suppressing redundant declaration warnings. + if anyextern: + output("#ifdef CONFIG_PRAGMA_DIAGNOSTIC_AVAILABLE\n", + "# pragma GCC diagnostic push\n", + "# pragma GCC diagnostic ignored \"-Wredundant-decls\"\n", + "# ifdef __clang__\n" + "# pragma GCC diagnostic ignored \"-Wtypedef-redefinition\= "\n", + "# endif\n", + "#endif\n\n") + out_pats =3D {} for i in allpatterns: if i.name in out_pats: @@ -1259,6 +1276,11 @@ def main(): out_pats[i.name] =3D i output('\n') =20 + if anyextern: + output("#ifdef CONFIG_PRAGMA_DIAGNOSTIC_AVAILABLE\n", + "# pragma GCC diagnostic pop\n", + "#endif\n\n") + for n in sorted(formats.keys()): f =3D formats[n] f.output_extract() --=20 2.17.1 From nobody Tue Nov 11 20:52:15 2025 Delivered-To: importer@patchew.org Received-SPF: pass (zoho.com: domain of gnu.org designates 209.51.188.17 as permitted sender) client-ip=209.51.188.17; envelope-from=qemu-devel-bounces+importer=patchew.org@nongnu.org; helo=lists.gnu.org; Authentication-Results: mx.zohomail.com; dkim=fail; spf=pass (zoho.com: domain of gnu.org designates 209.51.188.17 as permitted sender) smtp.mailfrom=qemu-devel-bounces+importer=patchew.org@nongnu.org; dmarc=fail(p=none dis=none) header.from=linaro.org ARC-Seal: i=1; a=rsa-sha256; t=1566228025; cv=none; d=zoho.com; s=zohoarc; b=SCmC0sbrtp1tLsKzIn62H0xBBm6gGdx/AKjSwUsJ0Vl9JEmM4Eo6x7g49AWqdI/FRHFO7tphMJAHk7MIKsIcAUCU2HPV3zJ78sAfOBNvUqaTFt4gLXFKp3b75nxY5EyT7JvF/0RWx8yKUYdgW2w406EqSGIiCbdu/Qg/fUJwt7c= ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=zoho.com; s=zohoarc; t=1566228025; h=Content-Type:Content-Transfer-Encoding:Cc:Date:From:In-Reply-To:List-Subscribe:List-Post:List-Id:List-Archive:List-Help:List-Unsubscribe:MIME-Version:Message-ID:References:Sender:Subject:To:ARC-Authentication-Results; bh=FYIOkeCFDs+BgfZApqGQTYKi9ofiCzdQQpabShx+clA=; b=gPiKa5idTFT2Qy3pnkw3ylKA+LXE/FC3pJMIabE7hkPscRMIZuygihqWKEMr0TFJuEJV1TKDRoLwz03YzpEp6RZBbqyRqfTHEtGM52ijZSUZHt4IZMLBuYS8gAjCkKUe7JikGgcfZI8KJFK2k5ltpxjLwtCXbAgsoYqRFqogKHo= ARC-Authentication-Results: i=1; mx.zoho.com; dkim=fail; spf=pass (zoho.com: domain of gnu.org designates 209.51.188.17 as permitted sender) smtp.mailfrom=qemu-devel-bounces+importer=patchew.org@nongnu.org; dmarc=fail header.from= (p=none dis=none) header.from= Return-Path: Received: from lists.gnu.org (lists.gnu.org [209.51.188.17]) by mx.zohomail.com with SMTPS id 1566228025819706.7537079444377; Mon, 19 Aug 2019 08:20:25 -0700 (PDT) Received: from localhost ([::1]:54276 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1hzjSK-0004BJ-14 for importer@patchew.org; Mon, 19 Aug 2019 11:20:24 -0400 Received: from eggs.gnu.org ([2001:470:142:3::10]:53018) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1hzjPy-0002Ut-3H for qemu-devel@nongnu.org; Mon, 19 Aug 2019 11:17:59 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1hzjPw-0002Wn-Pk for qemu-devel@nongnu.org; Mon, 19 Aug 2019 11:17:57 -0400 Received: from mail-pf1-x42d.google.com ([2607:f8b0:4864:20::42d]:35964) by eggs.gnu.org with esmtps (TLS1.0:RSA_AES_128_CBC_SHA1:16) (Exim 4.71) (envelope-from ) id 1hzjPw-0002Rn-Iq for qemu-devel@nongnu.org; Mon, 19 Aug 2019 11:17:56 -0400 Received: by mail-pf1-x42d.google.com with SMTP id w2so1349214pfi.3 for ; Mon, 19 Aug 2019 08:17:50 -0700 (PDT) Received: from localhost.localdomain (97-113-7-119.tukw.qwest.net. [97.113.7.119]) by smtp.gmail.com with ESMTPSA id r27sm21020406pgn.25.2019.08.19.08.17.47 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Mon, 19 Aug 2019 08:17:47 -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=FYIOkeCFDs+BgfZApqGQTYKi9ofiCzdQQpabShx+clA=; b=ltAd+58YwCh5eaUQEsu2K4Js+5xQgGw9JIVMFYOr/3Jb49QKktf0Wb/JhDgils9xXZ iY51U5XNUY5VZMVWwBxeRzVALpmDZsvajMSGsVbP/0WGChTxiL8a4BOkln1bv0v4ioi1 +basAvd3MtrGMdhCKpaWh3UUafeJFcI4Jod6L7/qK+Zqx6/uZ+GSRWIOmUwUl5GdcIUX bvdmXYn0G/9VhlFaCTRDeK8JQoGxjuOjQMYA0MytTRqmO/nMEc4A2OFzbPUgu+6oBArE 7YIOK0FaiczpHILdMOnWdqJdPqVATWtd2rBglf8Oca8JIbaTFkHX7q/KOnC0Ujhklagz /fCg== 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=FYIOkeCFDs+BgfZApqGQTYKi9ofiCzdQQpabShx+clA=; b=V55bCHpQnZmj0vpjDXNJas0eOsDTqPJKukXk5Adi18ZVWea4fdv78XQ1ifWczWR3vv +5zybmPxmPa+VlJIeB6rq2Yq3s0NJg2SsCi8m4GQ34IryNSBL05kMsndDg2CS55jnMgB Y+oEJiowrfj5uMBoaUGjMfjhOalEoY2PAIcK8VwIGajTxv+Zd1AFr4zbY7Q5ZEKxQup8 yGw1FMdoqoWmfWhxZ67rQreB/BokQ6SetWO9+W4u7hr9DeToJDyuVyp/x48IwkkwtwfA rg7VmRPqL/5G9JKgjNPqd4GLrIEqD06jsLhE8Djw8srIonAk0Ywg/xp1HBOcqErIuCmU r49g== X-Gm-Message-State: APjAAAXwA48XM8V0soxj+oPUkNaT6laXLQ3oGOknbYYd/pEaQjyvYYdb EvkUgvjzANyIqBDCvDLXtLMrE+livQc= X-Google-Smtp-Source: APXvYqyNjvVuL2i/xaKNgryLYL4/IXw3l4OsJidKNWPYCtzKcrXzmR63YJs2+tMgAj/zBJ+6pdr5XQ== X-Received: by 2002:a65:458d:: with SMTP id o13mr20056311pgq.34.1566227868801; Mon, 19 Aug 2019 08:17:48 -0700 (PDT) From: Richard Henderson To: qemu-devel@nongnu.org Date: Mon, 19 Aug 2019 08:17:43 -0700 Message-Id: <20190819151743.17267-4-richard.henderson@linaro.org> X-Mailer: git-send-email 2.17.1 In-Reply-To: <20190819151743.17267-1-richard.henderson@linaro.org> References: <20190819151743.17267-1-richard.henderson@linaro.org> MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: quoted-printable X-detected-operating-system: by eggs.gnu.org: Genre and OS details not recognized. X-Received-From: 2607:f8b0:4864:20::42d Subject: [Qemu-devel] [PULL 3/3] target/riscv: Remove redundant declaration pragmas X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: peter.maydell@linaro.org Errors-To: qemu-devel-bounces+importer=patchew.org@nongnu.org Sender: "Qemu-devel" X-ZohoMail-DKIM: fail (Header signature does not verify) These are now generated by decodetree itself. Tested-by: Philippe Mathieu-Daud=C3=A9 Reviewed-by: Philippe Mathieu-Daud=C3=A9 Reviewed-by: Alistair Francis Acked-by: Palmer Dabbelt Signed-off-by: Richard Henderson --- target/riscv/translate.c | 19 +------------------ 1 file changed, 1 insertion(+), 18 deletions(-) diff --git a/target/riscv/translate.c b/target/riscv/translate.c index 8d6ab73258..adeddb85f6 100644 --- a/target/riscv/translate.c +++ b/target/riscv/translate.c @@ -708,26 +708,9 @@ static bool gen_shift(DisasContext *ctx, arg_r *a, #include "insn_trans/trans_rvd.inc.c" #include "insn_trans/trans_privileged.inc.c" =20 -/* - * Auto-generated decoder. - * Note that the 16-bit decoder reuses some of the trans_* functions - * initially declared by the 32-bit decoder, which results in duplicate - * declaration warnings. Suppress them. - */ -#ifdef CONFIG_PRAGMA_DIAGNOSTIC_AVAILABLE -# pragma GCC diagnostic push -# pragma GCC diagnostic ignored "-Wredundant-decls" -# ifdef __clang__ -# pragma GCC diagnostic ignored "-Wtypedef-redefinition" -# endif -#endif - +/* Include the auto-generated decoder for 16 bit insn */ #include "decode_insn16.inc.c" =20 -#ifdef CONFIG_PRAGMA_DIAGNOSTIC_AVAILABLE -# pragma GCC diagnostic pop -#endif - static void decode_opc(DisasContext *ctx) { /* check for compressed insn */ --=20 2.17.1