From patchwork Thu Oct 17 00:25:07 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Ian Rogers X-Patchwork-Id: 13839335 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id 46DD8D2F7DE for ; Thu, 17 Oct 2024 02:31:09 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender:List-Subscribe:List-Help :List-Post:List-Archive:List-Unsubscribe:List-Id:Content-Type:To:From:Subject :References:Mime-Version:Message-Id:In-Reply-To:Date:Reply-To:Cc: Content-Transfer-Encoding:Content-ID:Content-Description:Resent-Date: Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:List-Owner; bh=XkIA/FyfXW8ws5sjRdf4oBh+1+aldg/GVrUyDFRat30=; b=HeXTdCr9LhNmhGNAxgjDcKOiWu kz1CP4PeD24LXKPiWNmMx4Gwyp6+JFOdOkZ0pOgOekE/YRzlsCN9q91InLxWLqSDb8fRxwwIGpNvW rI49Cd8AhHmnr0UwaER7t0f/QqrrylxaO1B47HeAZrXle2EVlrLNnDIgsiOXgi98WDaPxC0GBwSDN LZSX7zZ4SGm4WnA5go606GGtaL9YHIVMb1SGaXnXGxM+hs/yFwh/pyJqRykelYkHMtJ/ogMVPdQIC NssScKEvKmfW/jCp5IiM4cwaMMq41iQw7OU6somIEwSNEadlebXClNCkLGrbeyA4bKQ+n6n0TLdc3 kU2d5gLA==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.98 #2 (Red Hat Linux)) id 1t1GHw-0000000DYfO-0XEw; Thu, 17 Oct 2024 02:30:56 +0000 Received: from mail-yb1-xb4a.google.com ([2607:f8b0:4864:20::b4a]) by bombadil.infradead.org with esmtps (Exim 4.98 #2 (Red Hat Linux)) id 1t1EKo-0000000DKDV-0ps1 for linux-arm-kernel@lists.infradead.org; Thu, 17 Oct 2024 00:25:48 +0000 Received: by mail-yb1-xb4a.google.com with SMTP id 3f1490d57ef6-e292a6bdd72so697768276.0 for ; Wed, 16 Oct 2024 17:25:45 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=20230601; t=1729124745; x=1729729545; darn=lists.infradead.org; h=to:from:subject:references:mime-version:message-id:in-reply-to:date :from:to:cc:subject:date:message-id:reply-to; bh=XkIA/FyfXW8ws5sjRdf4oBh+1+aldg/GVrUyDFRat30=; b=nM1BnWBLCsC0lh5r4MEWrkhrCee1r5QGWhGqqYztohymCf9ge+ZYsHGdWROgtm755M hSxQaqlh2qvyaWsTxIWNlXiseIF8QqliA5k7Uo4COyj1HCdkmDgqTaUum28KHc0egYU4 OpP93JDDFwWReZk9ckLv+UC5n0ft6MsPnZqJxsApdcZOb1dbdg2vMXU5pO/cMpjplS2v 8jcqFyZVL2QHAJ6U46cacNoM9fOjuZJAqYSDNX4K5rlmw8lYhJIzt05dTtJy9EXwTVZX vhqflZJHWxhdL/iRuSSk32FRT2r1rQ7olykmPU5YKCsqXZUpP01qixFks8XFw1kuCenu tR2g== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1729124745; x=1729729545; h=to:from:subject:references:mime-version:message-id:in-reply-to:date :x-gm-message-state:from:to:cc:subject:date:message-id:reply-to; bh=XkIA/FyfXW8ws5sjRdf4oBh+1+aldg/GVrUyDFRat30=; b=TSqWhB7JLoRIbO0e3RVVEtAgn07rBxMFIe4U31cmAc/PMBYSO5HZ4F0SGIzvpfQ6HP hBFQYNfEy326oRSWUvXLsttCIh3Tjz3RJnK31mg4ggW/LSgGrwRVK3Tr8FEkWkuAmYW8 N+04ogif/4xzJ1KS4VdeR9ESeHQSFyUDkVkMN6/a1KJO1iYdITE2qIpR+SENZgLmxlHS ZSNMeAJwcPRGZKMNPABGxscFh/aW/LV3tL05L8R4NvIu8qISKZWu3uLQxfflz5jS8W8y +xq3HtZ2dlCAyOxQIOBE7BnVanqSXVnFDBc6tKZxDGjJ3St77VjaxcxiE9aW3JfBNU/m 3vFg== X-Forwarded-Encrypted: i=1; AJvYcCVtbDPvtg0TXmT4M7R1KBDNJnhB02D4J6fqZBpKF2X226Ise6o5kTjOzwvvPEW4PekjC/aotYLxMn5njy4CURnT@lists.infradead.org X-Gm-Message-State: AOJu0YxPp9D83JJQ8BPBJZRQVEMi/m0ME/gFWu378BCDy2Pj4Xe8jSwF XQTm7f9JHuZfYV8diiYn10vN13bABsJKMH4MtrXbaorH3tjsLhyyxc7g30QUAsMABcsw1IhJ6HX 1mZc08Q== X-Google-Smtp-Source: AGHT+IFe1Hb6lpRahuVZ4DDC/bHM6yCUrUEOQ+AJ0+tNqmO08JGP6ePh7fxc0X0rMoFvoFsezm94Q0V+zEE6 X-Received: from irogers.svl.corp.google.com ([2620:15c:2c5:11:a00a:f237:9bc0:79c]) (user=irogers job=sendgmr) by 2002:a25:a267:0:b0:e28:ec75:75ed with SMTP id 3f1490d57ef6-e29780ec57amr6223276.0.1729124744652; Wed, 16 Oct 2024 17:25:44 -0700 (PDT) Date: Wed, 16 Oct 2024 17:25:07 -0700 In-Reply-To: <20241017002520.59124-1-irogers@google.com> Message-Id: <20241017002520.59124-8-irogers@google.com> Mime-Version: 1.0 References: <20241017002520.59124-1-irogers@google.com> X-Mailer: git-send-email 2.47.0.105.g07ac214952-goog Subject: [PATCH v3 07/20] perf dwarf-regs: Move x86 dwarf-regs out of arch From: Ian Rogers To: Peter Zijlstra , Ingo Molnar , Arnaldo Carvalho de Melo , Namhyung Kim , Mark Rutland , Alexander Shishkin , Jiri Olsa , Ian Rogers , Adrian Hunter , Kan Liang , John Garry , Will Deacon , James Clark , Mike Leach , Leo Yan , Guo Ren , Paul Walmsley , Palmer Dabbelt , Albert Ou , Nick Terrell , "Masami Hiramatsu (Google)" , Changbin Du , Guilherme Amadio , Yang Jihong , Aditya Gupta , Athira Rajeev , Masahiro Yamada , Bibo Mao , Huacai Chen , Kajol Jain , Atish Patra , Shenlin Liang , Anup Patel , Oliver Upton , "Steinar H. Gunderson" , "Dr. David Alan Gilbert" , Chen Pei , Dima Kogan , Przemek Kitszel , "David S. Miller" , Alexander Lobakin , linux-kernel@vger.kernel.org, linux-perf-users@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-csky@vger.kernel.org, linux-riscv@lists.infradead.org X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20241016_172546_276539_820A61B1 X-CRM114-Status: GOOD ( 16.65 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org Move arch/x86/util/dwarf-regs.c to util/dwarf-regs-x86.c and compile in unconditionally. To avoid get_arch_regnum being duplicated, rename to get_x86_regnum and add to get_dwarf_regnum switch. For get_arch_regstr, this was unused on x86 unless the machine type was EM_NONE. Map that case to EM_HOST and remove get_arch_regstr from dwarf-regs-x86.c. Signed-off-by: Ian Rogers --- tools/perf/arch/x86/util/Build | 3 --- tools/perf/util/Build | 1 + .../dwarf-regs.c => util/dwarf-regs-x86.c} | 24 +------------------ tools/perf/util/dwarf-regs.c | 17 +++++++++++++ tools/perf/util/include/dwarf-regs.h | 8 +++++++ 5 files changed, 27 insertions(+), 26 deletions(-) rename tools/perf/{arch/x86/util/dwarf-regs.c => util/dwarf-regs-x86.c} (77%) diff --git a/tools/perf/arch/x86/util/Build b/tools/perf/arch/x86/util/Build index 9705cda4f240..70af491a6dd7 100644 --- a/tools/perf/arch/x86/util/Build +++ b/tools/perf/arch/x86/util/Build @@ -12,9 +12,6 @@ perf-util-y += evsel.o perf-util-y += iostat.o perf-util-y += env.o -perf-util-$(CONFIG_LIBDW) += dwarf-regs.o -perf-util-$(CONFIG_BPF_PROLOGUE) += dwarf-regs.o - perf-util-$(CONFIG_LOCAL_LIBUNWIND) += unwind-libunwind.o perf-util-$(CONFIG_LIBDW_DWARF_UNWIND) += unwind-libdw.o diff --git a/tools/perf/util/Build b/tools/perf/util/Build index 1eedead5f2f2..4c615611b9d7 100644 --- a/tools/perf/util/Build +++ b/tools/perf/util/Build @@ -203,6 +203,7 @@ endif perf-util-$(CONFIG_LIBDW) += probe-finder.o perf-util-$(CONFIG_LIBDW) += dwarf-aux.o perf-util-$(CONFIG_LIBDW) += dwarf-regs.o +perf-util-$(CONFIG_LIBDW) += dwarf-regs-x86.o perf-util-$(CONFIG_LIBDW) += debuginfo.o perf-util-$(CONFIG_LIBDW) += annotate-data.o diff --git a/tools/perf/arch/x86/util/dwarf-regs.c b/tools/perf/util/dwarf-regs-x86.c similarity index 77% rename from tools/perf/arch/x86/util/dwarf-regs.c rename to tools/perf/util/dwarf-regs-x86.c index 530905118cd4..7a55c65e8da6 100644 --- a/tools/perf/arch/x86/util/dwarf-regs.c +++ b/tools/perf/util/dwarf-regs-x86.c @@ -11,28 +11,6 @@ #include /* for ARRAY_SIZE */ #include -#define DEFINE_DWARF_REGSTR_TABLE 1 -#include "dwarf-regs-table.h" - -/* Return architecture dependent register string (for kprobe-tracer) */ -const char *get_arch_regstr(unsigned int n) -{ -#if defined(__i386__) - size_t len = ARRAY_SIZE(x86_32_regstr_tbl); -#else - size_t len = ARRAY_SIZE(x86_64_regstr_tbl); -#endif - - if (n >= len) - return NULL; - -#if defined(__i386__) - return x86_32_regstr_tbl[n]; -#else - return x86_64_regstr_tbl[n]; -#endif -} - struct dwarf_regs_idx { const char *name; int idx; @@ -58,7 +36,7 @@ static const struct dwarf_regs_idx x86_regidx_table[] = { { "rip", DWARF_REG_PC }, }; -int get_arch_regnum(const char *name) +int get_x86_regnum(const char *name) { unsigned int i; diff --git a/tools/perf/util/dwarf-regs.c b/tools/perf/util/dwarf-regs.c index 86b3ef638fbb..eac99a246737 100644 --- a/tools/perf/util/dwarf-regs.c +++ b/tools/perf/util/dwarf-regs.c @@ -32,9 +32,17 @@ const char *get_dwarf_regstr(unsigned int n, unsigned int machine, unsigned int flags __maybe_unused) { +#if EM_HOST == EM_X86_64 || EM_HOST == EM_386 + if (machine == EM_NONE) { + /* Generic arch - use host arch */ + machine = EM_HOST; + } +#endif switch (machine) { +#if EM_HOST != EM_X86_64 && EM_HOST != EM_386 case EM_NONE: /* Generic arch - use host arch */ return get_arch_regstr(n); +#endif case EM_386: return __get_dwarf_regstr(x86_32_regstr_tbl, n); case EM_X86_64: @@ -65,10 +73,12 @@ const char *get_dwarf_regstr(unsigned int n, unsigned int machine, return NULL; } +#if EM_HOST != EM_X86_64 && EM_HOST != EM_386 __weak int get_arch_regnum(const char *name __maybe_unused) { return -ENOTSUP; } +#endif /* Return DWARF register number from architecture register name */ int get_dwarf_regnum(const char *name, unsigned int machine, unsigned int flags __maybe_unused) @@ -90,9 +100,16 @@ int get_dwarf_regnum(const char *name, unsigned int machine, unsigned int flags machine = EM_HOST; } switch (machine) { +#if EM_HOST != EM_X86_64 && EM_HOST != EM_386 case EM_HOST: reg = get_arch_regnum(regname); break; +#endif + case EM_X86_64: + fallthrough; + case EM_386: + reg = get_x86_regnum(regname); + break; default: pr_err("ELF MACHINE %x is not supported.\n", machine); } diff --git a/tools/perf/util/include/dwarf-regs.h b/tools/perf/util/include/dwarf-regs.h index 925525405e2d..062623aefd5a 100644 --- a/tools/perf/util/include/dwarf-regs.h +++ b/tools/perf/util/include/dwarf-regs.h @@ -79,7 +79,10 @@ #define DWARF_REG_FB 0xd3affb /* random number */ #ifdef HAVE_LIBDW_SUPPORT +#if !defined(__x86_64__) && !defined(__i386__) const char *get_arch_regstr(unsigned int n); +#endif + /** * get_dwarf_regstr() - Returns ftrace register string from DWARF regnum. * @n: DWARF register number. @@ -88,7 +91,12 @@ const char *get_arch_regstr(unsigned int n); */ const char *get_dwarf_regstr(unsigned int n, unsigned int machine, unsigned int flags); +int get_x86_regnum(const char *name); + +#if !defined(__x86_64__) && !defined(__i386__) int get_arch_regnum(const char *name); +#endif + /* * get_dwarf_regnum - Returns DWARF regnum from register name * name: architecture register name