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AJvYcCWuTQC4vT19lY9PKuX9Cihxgd4OnjWS2yEULipOinLvErJMe/mbOoaI+Rff9FowjR1n2ec+uw==@lists.linux.dev X-Gm-Message-State: AOJu0Yz6idA7VOKlbg6fieQhjoy0JYhAe9X1STDteSQ4qKemTzUVUBa9 ag1QTBAdeB4lU8SgcJ9siSwkcm4piq1PT+GuejYjQszDt0iVfdCAnMt3S2AkAEdoH8YMrT9RzkK ZjZ4U+xHoBGru7iVD0prc1SInRg== X-Google-Smtp-Source: AGHT+IFTrAucXWOZ9cZin4iLnAuYNLU0EypeB1Z89LIS9DMR6Ty9nh8TVw3+ALRwnadMOVxAECwEdv5BsoMa/bUsExI= X-Received: from samitolvanen.c.googlers.com ([fda3:e722:ac3:cc00:7f:e700:c0a8:4f92]) (user=samitolvanen job=sendgmr) by 2002:a63:6247:0:b0:7d5:e48:4286 with SMTP id 41be03b00d2f7-7ea320e1a64mr17a12.7.1728412731505; Tue, 08 Oct 2024 11:38:51 -0700 (PDT) Date: Tue, 8 Oct 2024 18:38:32 +0000 In-Reply-To: <20241008183823.36676-21-samitolvanen@google.com> Precedence: bulk X-Mailing-List: asahi@lists.linux.dev List-Id: List-Subscribe: List-Unsubscribe: Mime-Version: 1.0 References: <20241008183823.36676-21-samitolvanen@google.com> X-Developer-Key: i=samitolvanen@google.com; a=openpgp; fpr=35CCFB63B283D6D3AEB783944CB5F6848BBC56EE X-Developer-Signature: v=1; a=openpgp-sha256; l=2343; i=samitolvanen@google.com; h=from:subject; bh=mITPyravUpQ/bJzC6y0bi7OfUc6olmVCmSnsnJKAM7Q=; b=owGbwMvMwCEWxa662nLh8irG02pJDOmsNSotQRLVu8W36TyxnBn03Kh8W8wLl9zpO/6c+5uir zeHSyygo5SFQYyDQVZMkaXl6+qtu787pb76XCQBM4eVCWQIAxenAExk5xJGhgW6sTfmOap9F+2d dj/kZfa9k0X8vx0SbpTtlLaVf3TpRTsjw0IVqdWfXtzz9zknuvFfs55LlIl/QB73x//S4bUObNb L+QA= X-Mailer: git-send-email 2.47.0.rc0.187.ge670bccf7e-goog Message-ID: <20241008183823.36676-29-samitolvanen@google.com> Subject: [PATCH v4 08/19] gendwarfksyms: Expand array_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-Type: text/plain; charset="UTF-8" Add support for expanding DW_TAG_array_type, and the subrange type indicating array size. Example source code: const char *s[34]; Output with --dump-dies: variable array_type[34] { pointer_type { const_type { base_type char byte_size(1) encoding(6) } } byte_size(8) } Signed-off-by: Sami Tolvanen Acked-by: Neal Gompa Reviewed-by: Petr Pavlu --- scripts/gendwarfksyms/dwarf.c | 30 ++++++++++++++++++++++++++++++ 1 file changed, 30 insertions(+) diff --git a/scripts/gendwarfksyms/dwarf.c b/scripts/gendwarfksyms/dwarf.c index 7e6b477d7c12..ade9b3b7b119 100644 --- a/scripts/gendwarfksyms/dwarf.c +++ b/scripts/gendwarfksyms/dwarf.c @@ -219,6 +219,7 @@ DEFINE_PROCESS_UDATA_ATTRIBUTE(encoding) } DEFINE_MATCH(formal_parameter) +DEFINE_MATCH(subrange) bool match_all(Dwarf_Die *die) { @@ -341,6 +342,33 @@ DEFINE_PROCESS_TYPE(shared) DEFINE_PROCESS_TYPE(volatile) DEFINE_PROCESS_TYPE(typedef) +static void process_subrange_type(struct state *state, struct die *cache, + Dwarf_Die *die) +{ + Dwarf_Word count = 0; + + if (get_udata_attr(die, DW_AT_count, &count)) + process_fmt(cache, "[%" PRIu64 "]", count); + else if (get_udata_attr(die, DW_AT_upper_bound, &count)) + process_fmt(cache, "[%" PRIu64 "]", count + 1); + else + process(cache, "[]"); +} + +static void process_array_type(struct state *state, struct die *cache, + Dwarf_Die *die) +{ + process(cache, "array_type"); + /* Array size */ + check(process_die_container(state, cache, die, process_type, + match_subrange_type)); + process(cache, " {"); + process_linebreak(cache, 1); + process_type_attr(state, cache, die); + process_linebreak(cache, -1); + process(cache, "}"); +} + static void __process_subroutine_type(struct state *state, struct die *cache, Dwarf_Die *die, const char *type) { @@ -436,7 +464,9 @@ static int process_type(struct state *state, struct die *parent, Dwarf_Die *die) PROCESS_TYPE(volatile) /* Subtypes */ PROCESS_TYPE(formal_parameter) + PROCESS_TYPE(subrange) /* Other types */ + PROCESS_TYPE(array) PROCESS_TYPE(base) PROCESS_TYPE(subroutine) PROCESS_TYPE(typedef) -- 2.47.0.rc0.187.ge670bccf7e-goog