From nobody Mon Nov 25 04:37:37 2024 Received: from mail-pg1-f201.google.com (mail-pg1-f201.google.com [209.85.215.201]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 3CFF91DDC32 for ; Thu, 21 Nov 2024 20:42:47 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=209.85.215.201 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1732221769; cv=none; b=diFUc1I5hmO1F2lkeWSg7QheGpyvOBJvShiuUuhXLOYcNLt1Q2nvBiHVUcO0RARweZ1Z4Ulrmqnw/8oVoToU1tGVb8kLulLXcqnX3pWQSTFZGOj7qMMYldHljOecG241cJ5Jf47skWbtNSAfkk897wY6w2+YQoVWAfyUSy/BYvM= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1732221769; c=relaxed/simple; bh=K2ie+K5BAHLttox7QOvj2Jlq5yVsu82vs8hCoTiovzM=; h=Date:In-Reply-To:Mime-Version:References:Message-ID:Subject:From: To:Cc:Content-Type; b=htM7aRdR3kQivr/pAjrOXb020SF/p27CjrVK8+CdMqT8muxouTflQ5TT2B5tVtBDcd9D7mjxV4xtxRLPOavk9UL82tDpMZzpEgwgmKplaoWDhCMp9H2EpkDC8LLFJ0OhcLAjk5jgaxljWNPxVFVUvjm9LCKK+ci8ofluEh+BBgI= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=pass (p=reject dis=none) header.from=google.com; spf=pass smtp.mailfrom=flex--samitolvanen.bounces.google.com; dkim=pass (2048-bit key) header.d=google.com header.i=@google.com header.b=o94OEAQV; arc=none smtp.client-ip=209.85.215.201 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=reject dis=none) header.from=google.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=flex--samitolvanen.bounces.google.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=google.com header.i=@google.com header.b="o94OEAQV" Received: by mail-pg1-f201.google.com with SMTP id 41be03b00d2f7-7fb966ee0cdso1007242a12.1 for ; Thu, 21 Nov 2024 12:42:47 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=20230601; t=1732221766; x=1732826566; darn=vger.kernel.org; h=cc:to:from:subject:message-id:references:mime-version:in-reply-to :date:from:to:cc:subject:date:message-id:reply-to; bh=R5PScQuWHy6DjhROn8PczIndaWix8yzkVmRsn1uGhjo=; b=o94OEAQVDVbMV/K8Emp3pz5YzZ37kl/48tHM9WAZF2YKeO+npPgdrI9KRLlBiLXTPC Yr9Jpud/mlAPrrDrpc3RzB1aH5CPJAedxEK4GOcLJP3jsDT3k3hE7sBRM9dTy+Sm0EYc kINl50XoJd4eI7FBN99adPHokhw5nnkXvrbgIgb1M79hrfLcKWbAAkiFjElV9i9VGWft T8NxYDgBr63wIB7OcJQvQ4P0CG7EBt+S+DEpC8LXbQy2zC4bc7zJ/f4ZZQ27clKzHaC2 C1u/Z+MsiBdD0OLqh2Xl5N8qrFPDPv7t+2Lz1rWR2xh8DKOq2RpVPOX21A+iHVtFtAUD RzCg== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1732221766; x=1732826566; h=cc:to:from:subject:message-id:references:mime-version:in-reply-to :date:x-gm-message-state:from:to:cc:subject:date:message-id:reply-to; bh=R5PScQuWHy6DjhROn8PczIndaWix8yzkVmRsn1uGhjo=; b=Dx/0E7kgZxB6u6upNPNezW2AiZipdL8/cO8xC6M4OaxOIQd0GPqjz851khExB0UFJ0 v7Yeu5vopLK0sZ2lF5v+J+mO7LGDY1o31S3+IGGUssILYFryQUptSrKX0X4VLODrJIml 1ArMaiiKpI5j4wy6BwPpegR92cL180Rxd1xrHGb9tJ4TEQTMZ86JDryw1y5wQYjbpR14 Sxj38Y2xvRmIsyK0qlCMk10aHkqkAP4qqqbvLrgKRS+k1y84okL6/wj7kzLjoWbtD9sc eAF+sf7nZDGTafDYKjDDZhcJY0kefyM10zF97MMLsP95fKGBH9hOtFNIZlI6vymTzW4O 1Xcw== X-Forwarded-Encrypted: i=1; AJvYcCV304De+X4Z7JR6VwMeicmgW4Fh1/ycNgnGbtsFwpJ/Gk4wMAzC56TZLdkD7FFnHb5xALuRIub1QVGq854=@vger.kernel.org X-Gm-Message-State: AOJu0YwVv059CQ0t5f+RguJUN3yBp9SkViEaGeb7n98XG3mX3QoTJgX0 4dcvi3fcjQPWRXujszQBXCLUWgxO82Vn81F/vwmEg7EZLXmvkn96bgpBVEPRVE4+ox7M/hKpDcs FfMkm4t8a8ybOHktEDadA1izodg== X-Google-Smtp-Source: AGHT+IF3193DVDNoTowEC34YpIeXHuT6+LHh9FOvMUqYp9Gv+NbxW05RZWgElbfmVyDREsBBIVfSTX89nLZeLEUq1k0= X-Received: from samitolvanen.c.googlers.com ([fda3:e722:ac3:cc00:7f:e700:c0a8:4f92]) (user=samitolvanen job=sendgmr) by 2002:a63:5921:0:b0:7ea:68e2:176b with SMTP id 41be03b00d2f7-7fbb44ac1d9mr2886a12.1.1732221766514; Thu, 21 Nov 2024 12:42:46 -0800 (PST) Date: Thu, 21 Nov 2024 20:42:27 +0000 In-Reply-To: <20241121204220.2378181-20-samitolvanen@google.com> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: Mime-Version: 1.0 References: <20241121204220.2378181-20-samitolvanen@google.com> X-Developer-Key: i=samitolvanen@google.com; a=openpgp; fpr=35CCFB63B283D6D3AEB783944CB5F6848BBC56EE X-Developer-Signature: v=1; a=openpgp-sha256; l=5759; i=samitolvanen@google.com; h=from:subject; bh=K2ie+K5BAHLttox7QOvj2Jlq5yVsu82vs8hCoTiovzM=; b=owGbwMvMwCEWxa662nLh8irG02pJDOn2s/UrKq3LtlTGmF/emH9nRrDQ6s2nEss3Na59sfTFl F/rT70x7ShlYRDjYJAVU2Rp+bp66+7vTqmvPhdJwMxhZQIZwsDFKQA3mYPhf4iKpIT7us+O4txT RX13HsrRvr5+Z+1uZ5u7088WqdyM/8XIsO2zf07YmwCeio5fnzMlOA/fMo78MuWWk1ylzZkeqXv JPAA= X-Mailer: git-send-email 2.47.0.371.ga323438b13-goog Message-ID: <20241121204220.2378181-26-samitolvanen@google.com> Subject: [PATCH v6 06/18] gendwarfksyms: Expand subroutine_type From: Sami Tolvanen To: Masahiro Yamada , Luis Chamberlain , Miguel Ojeda , Greg Kroah-Hartman Cc: Matthew Maurer , Alex Gaynor , Gary Guo , Petr Pavlu , Daniel Gomez , Neal Gompa , Hector Martin , Janne Grunau , Miroslav Benes , Asahi Linux , Sedat Dilek , linux-kbuild@vger.kernel.org, linux-kernel@vger.kernel.org, linux-modules@vger.kernel.org, rust-for-linux@vger.kernel.org, Sami Tolvanen Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset="utf-8" Add support for expanding DW_TAG_subroutine_type and the parameters in DW_TAG_formal_parameter. Use this to also expand subprograms. Example output with --dump-dies: subprogram ( formal_parameter pointer_type { const_type { base_type char byte_size(1) encoding(6) } } ) -> base_type unsigned long byte_size(8) encoding(7) Signed-off-by: Sami Tolvanen Reviewed-by: Petr Pavlu --- scripts/gendwarfksyms/dwarf.c | 84 ++++++++++++++++++++++++++- scripts/gendwarfksyms/gendwarfksyms.h | 4 ++ 2 files changed, 85 insertions(+), 3 deletions(-) diff --git a/scripts/gendwarfksyms/dwarf.c b/scripts/gendwarfksyms/dwarf.c index 1d67ee18a388..7e6b477d7c12 100644 --- a/scripts/gendwarfksyms/dwarf.c +++ b/scripts/gendwarfksyms/dwarf.c @@ -211,6 +211,15 @@ DEFINE_PROCESS_UDATA_ATTRIBUTE(alignment) DEFINE_PROCESS_UDATA_ATTRIBUTE(byte_size) DEFINE_PROCESS_UDATA_ATTRIBUTE(encoding) =20 +/* Match functions -- die_match_callback_t */ +#define DEFINE_MATCH(type) \ + static bool match_##type##_type(Dwarf_Die *die) \ + { \ + return dwarf_tag(die) =3D=3D DW_TAG_##type##_type; \ + } + +DEFINE_MATCH(formal_parameter) + bool match_all(Dwarf_Die *die) { return true; @@ -223,19 +232,28 @@ int process_die_container(struct state *state, struct= die *cache, Dwarf_Die current; int res; =20 + /* Track the first item in lists. */ + if (state) + state->first_list_item =3D true; + res =3D checkp(dwarf_child(die, ¤t)); while (!res) { if (match(¤t)) { /* <0 =3D error, 0 =3D continue, >0 =3D stop */ res =3D checkp(func(state, cache, ¤t)); if (res) - return res; + goto out; } =20 res =3D checkp(dwarf_siblingof(¤t, ¤t)); } =20 - return 0; + res =3D 0; +out: + if (state) + state->first_list_item =3D false; + + return res; } =20 static int process_type(struct state *state, struct die *parent, @@ -255,6 +273,40 @@ static void process_type_attr(struct state *state, str= uct die *cache, process(cache, "base_type void"); } =20 +static void process_list_comma(struct state *state, struct die *cache) +{ + if (state->first_list_item) { + state->first_list_item =3D false; + } else { + process(cache, " ,"); + process_linebreak(cache, 0); + } +} + +/* Comma-separated with DW_AT_type */ +static void __process_list_type(struct state *state, struct die *cache, + Dwarf_Die *die, const char *type) +{ + const char *name =3D get_name_attr(die); + + process_list_comma(state, cache); + process(cache, type); + process_type_attr(state, cache, die); + if (name) { + process(cache, " "); + process(cache, name); + } +} + +#define DEFINE_PROCESS_LIST_TYPE(type) = \ + static void process_##type##_type(struct state *state, \ + struct die *cache, Dwarf_Die *die) \ + { \ + __process_list_type(state, cache, die, #type " "); \ + } + +DEFINE_PROCESS_LIST_TYPE(formal_parameter) + /* Container types with DW_AT_type */ static void __process_type(struct state *state, struct die *cache, Dwarf_Die *die, const char *type) @@ -289,6 +341,29 @@ DEFINE_PROCESS_TYPE(shared) DEFINE_PROCESS_TYPE(volatile) DEFINE_PROCESS_TYPE(typedef) =20 +static void __process_subroutine_type(struct state *state, struct die *cac= he, + Dwarf_Die *die, const char *type) +{ + process(cache, type); + process(cache, " ("); + process_linebreak(cache, 1); + /* Parameters */ + check(process_die_container(state, cache, die, process_type, + match_formal_parameter_type)); + process_linebreak(cache, -1); + process(cache, ")"); + process_linebreak(cache, 0); + /* Return type */ + process(cache, "-> "); + process_type_attr(state, cache, die); +} + +static void process_subroutine_type(struct state *state, struct die *cache, + Dwarf_Die *die) +{ + __process_subroutine_type(state, cache, die, "subroutine_type"); +} + static void process_base_type(struct state *state, struct die *cache, Dwarf_Die *die) { @@ -359,8 +434,11 @@ static int process_type(struct state *state, struct di= e *parent, Dwarf_Die *die) PROCESS_TYPE(rvalue_reference) PROCESS_TYPE(shared) PROCESS_TYPE(volatile) + /* Subtypes */ + PROCESS_TYPE(formal_parameter) /* Other types */ PROCESS_TYPE(base) + PROCESS_TYPE(subroutine) PROCESS_TYPE(typedef) default: debug("unimplemented type: %x", tag); @@ -390,7 +468,7 @@ static void process_symbol(struct state *state, Dwarf_D= ie *die, static int __process_subprogram(struct state *state, struct die *cache, Dwarf_Die *die) { - process(cache, "subprogram"); + __process_subroutine_type(state, cache, die, "subprogram"); return 0; } =20 diff --git a/scripts/gendwarfksyms/gendwarfksyms.h b/scripts/gendwarfksyms/= gendwarfksyms.h index a6b9a697bb17..39bdc9e121b5 100644 --- a/scripts/gendwarfksyms/gendwarfksyms.h +++ b/scripts/gendwarfksyms/gendwarfksyms.h @@ -65,6 +65,7 @@ extern int dump_dies; #define checkp(expr) __check(expr, __res < 0) =20 /* Consistent aliases (DW_TAG__type) for DWARF tags */ +#define DW_TAG_formal_parameter_type DW_TAG_formal_parameter #define DW_TAG_typedef_type DW_TAG_typedef =20 /* @@ -159,6 +160,9 @@ void die_map_free(void); struct state { struct symbol *sym; Dwarf_Die die; + + /* List expansion */ + bool first_list_item; }; =20 typedef int (*die_callback_t)(struct state *state, struct die *cache, --=20 2.47.0.371.ga323438b13-goog