From patchwork Fri Oct 25 06:36:59 2019 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Patchwork-Submitter: =?utf-8?q?Alex_Benn=C3=A9e?= X-Patchwork-Id: 11211461 Return-Path: Received: from mail.kernel.org (pdx-korg-mail-1.web.codeaurora.org [172.30.200.123]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id 9F3CF13BD for ; Fri, 25 Oct 2019 06:58:42 +0000 (UTC) Received: from lists.gnu.org (lists.gnu.org [209.51.188.17]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id 643CB21D71 for ; Fri, 25 Oct 2019 06:58:42 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=fail reason="signature verification failed" (2048-bit key) header.d=linaro.org header.i=@linaro.org header.b="E9w/5TQU" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 643CB21D71 Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=linaro.org Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=qemu-devel-bounces+patchwork-qemu-devel=patchwork.kernel.org@nongnu.org Received: from localhost ([::1]:56266 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1iNtYW-0007M2-Nu for patchwork-qemu-devel@patchwork.kernel.org; Fri, 25 Oct 2019 02:58:40 -0400 Received: from eggs.gnu.org ([2001:470:142:3::10]:35684) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1iNtE9-0003UE-45 for qemu-devel@nongnu.org; Fri, 25 Oct 2019 02:37:39 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1iNtE7-0008UV-60 for qemu-devel@nongnu.org; Fri, 25 Oct 2019 02:37:37 -0400 Received: from mail-wr1-x430.google.com ([2a00:1450:4864:20::430]:42521) by eggs.gnu.org with esmtps (TLS1.0:RSA_AES_128_CBC_SHA1:16) (Exim 4.71) (envelope-from ) id 1iNtE6-0008Ts-VJ for qemu-devel@nongnu.org; Fri, 25 Oct 2019 02:37:35 -0400 Received: by mail-wr1-x430.google.com with SMTP id r1so902161wrs.9 for ; Thu, 24 Oct 2019 23:37:34 -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=J5mwez8/3JgAsIrNmKybl1GLPKvB5P922l8oGG8eRMA=; b=E9w/5TQUAp6jdk9+CbKxG5Yl3oW0bD4ZX/SSnleoKdOGiIngdaGCBdMwHBs57YW5U2 fqyjfTmUwGRaXGs5PwUt65uGnxGJfsLGj2LCTW3bxGaPEaQr57trc9jFODJ3FaGEFchS 0zvNJmhx6rx6dpvJ4vNkH44ImH++DkBosSCGfn0XsbMvkKB0nnpulk1OrZZ8VDm2ZotU q6Z6G/pgCrhGxwcDALw3/sIjj3pZAnrigfbSbeLgi1FdCEZQvMTTHsB4O7nnr42VxHXL /J7PCYHt1o/AvwnXgn3qXpNdsA6vmzbPI2655vORAUnlMtacskeNXxQBEa11rIge3DvE NvzA== 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=J5mwez8/3JgAsIrNmKybl1GLPKvB5P922l8oGG8eRMA=; b=rxvK5chselQU4VbG2UeZBn9axGcCTYA5BX8UU7pUiaQ8UrCihsyIyRmz2COFprQoJB P1n8t8AJbIrw5uopQavYfC5AaaAnC8cfn3LVYr8bH1aY2o+XQJxg//8AGVB8aPKZ9HQq DQIxzYKpgc0IXP+fJfLOn5L7ckFiFtOG0pLAfbEJdb3hKKnaFYQqpsJA33tZOGYDXe4P H2r6VPSY8X4PZUovTNu7Ca8EYHfYH4qboazDzGBPy1lXG24S6PV1CaUUZ7HReno5C3Qa zeamQA9dDpJURvLZib24RrhVM8z8WSp6XRL5oOiiU2GAyILCKxe7WLVraFCK5gC4xj90 Rfqw== X-Gm-Message-State: APjAAAUht/FPiVpz3AQIbUFKz2DuxtHnbGwkOmRyA0EwUiT/GFx0iDDH kJqI/nz8Pj8n6Rn7YcrdzQs1XQ== X-Google-Smtp-Source: APXvYqzPL7RL3ZbdhkdVAGxYeyV1MHVsI0afWmGOu6usjkiFZa/DxBP+GfyFQYn4KsPZmh7RL9D3iA== X-Received: by 2002:a5d:4808:: with SMTP id l8mr1268388wrq.118.1571985453718; Thu, 24 Oct 2019 23:37:33 -0700 (PDT) Received: from zen.linaroharston ([51.148.130.216]) by smtp.gmail.com with ESMTPSA id h205sm1147080wmf.35.2019.10.24.23.37.22 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Thu, 24 Oct 2019 23:37:24 -0700 (PDT) Received: from zen.lan (localhost [127.0.0.1]) by zen.linaroharston (Postfix) with ESMTP id 4F65E1FFD1; Fri, 25 Oct 2019 07:37:19 +0100 (BST) From: =?utf-8?q?Alex_Benn=C3=A9e?= To: peter.maydell@linaro.org Subject: [PULL v2 59/73] tests/plugin: add sample plugins Date: Fri, 25 Oct 2019 07:36:59 +0100 Message-Id: <20191025063713.23374-60-alex.bennee@linaro.org> X-Mailer: git-send-email 2.20.1 In-Reply-To: <20191025063713.23374-1-alex.bennee@linaro.org> References: <20191025063713.23374-1-alex.bennee@linaro.org> MIME-Version: 1.0 X-detected-operating-system: by eggs.gnu.org: Genre and OS details not recognized. X-Received-From: 2a00:1450:4864:20::430 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: Richard Henderson , "Emilio G. Cota" , =?utf-8?q?Alex_Benn=C3=A9e?= , qemu-devel@nongnu.org Errors-To: qemu-devel-bounces+patchwork-qemu-devel=patchwork.kernel.org@nongnu.org Sender: "Qemu-devel" From: "Emilio G. Cota" Pass arguments with -plugin=libfoo.so,arg=bar,arg=baz Signed-off-by: Emilio G. Cota Signed-off-by: Alex Bennée Reviewed-by: Richard Henderson diff --git a/configure b/configure index eabe84af6ed..f77c4dc09a6 100755 --- a/configure +++ b/configure @@ -7903,6 +7903,7 @@ DIRS="$DIRS roms/seabios roms/vgabios" LINKS="Makefile" LINKS="$LINKS tests/tcg/lm32/Makefile po/Makefile" LINKS="$LINKS tests/tcg/Makefile.target tests/fp/Makefile" +LINKS="$LINKS tests/plugin/Makefile" LINKS="$LINKS pc-bios/optionrom/Makefile pc-bios/keymaps" LINKS="$LINKS pc-bios/s390-ccw/Makefile" LINKS="$LINKS roms/seabios/Makefile roms/vgabios/Makefile" diff --git a/tests/plugin/Makefile b/tests/plugin/Makefile new file mode 100644 index 00000000000..f9a3546ea32 --- /dev/null +++ b/tests/plugin/Makefile @@ -0,0 +1,28 @@ +BUILD_DIR := $(CURDIR)/../.. + +include $(BUILD_DIR)/config-host.mak +include $(SRC_PATH)/rules.mak + +$(call set-vpath, $(SRC_PATH)/tests/plugin) + +NAMES := +NAMES += bb +NAMES += empty +NAMES += insn +NAMES += mem + +SONAMES := $(addsuffix .so,$(addprefix lib,$(NAMES))) + +QEMU_CFLAGS += -fPIC +QEMU_CFLAGS += -I$(SRC_PATH)/include/qemu + +all: $(SONAMES) + +lib%.so: %.o + $(CC) -shared -Wl,-soname,$@ -o $@ $^ $(LDLIBS) + +clean: + rm -f *.o *.so *.d + rm -Rf .libs + +.PHONY: all clean diff --git a/tests/plugin/bb.c b/tests/plugin/bb.c new file mode 100644 index 00000000000..45e1de5bd68 --- /dev/null +++ b/tests/plugin/bb.c @@ -0,0 +1,64 @@ +/* + * Copyright (C) 2018, Emilio G. Cota + * + * License: GNU GPL, version 2 or later. + * See the COPYING file in the top-level directory. + */ +#include +#include +#include +#include +#include +#include +#include + +#include + +static uint64_t bb_count; +static uint64_t insn_count; +static bool do_inline; + +static void plugin_exit(qemu_plugin_id_t id, void *p) +{ + g_autofree gchar *out; + out = g_strdup_printf("bb's: %" PRIu64", insns: %" PRIu64 "\n", + bb_count, insn_count); + qemu_plugin_outs(out); +} + +static void vcpu_tb_exec(unsigned int cpu_index, void *udata) +{ + unsigned long n_insns = (unsigned long)udata; + + insn_count += n_insns; + bb_count++; +} + +static void vcpu_tb_trans(qemu_plugin_id_t id, struct qemu_plugin_tb *tb) +{ + unsigned long n_insns = qemu_plugin_tb_n_insns(tb); + + if (do_inline) { + qemu_plugin_register_vcpu_tb_exec_inline(tb, QEMU_PLUGIN_INLINE_ADD_U64, + &bb_count, 1); + qemu_plugin_register_vcpu_tb_exec_inline(tb, QEMU_PLUGIN_INLINE_ADD_U64, + &insn_count, n_insns); + } else { + qemu_plugin_register_vcpu_tb_exec_cb(tb, vcpu_tb_exec, + QEMU_PLUGIN_CB_NO_REGS, + (void *)n_insns); + } +} + +QEMU_PLUGIN_EXPORT int qemu_plugin_install(qemu_plugin_id_t id, + const qemu_info_t *info, + int argc, char **argv) +{ + if (argc && strcmp(argv[0], "inline") == 0) { + do_inline = true; + } + + qemu_plugin_register_vcpu_tb_trans_cb(id, vcpu_tb_trans); + qemu_plugin_register_atexit_cb(id, plugin_exit, NULL); + return 0; +} diff --git a/tests/plugin/empty.c b/tests/plugin/empty.c new file mode 100644 index 00000000000..3f60f690278 --- /dev/null +++ b/tests/plugin/empty.c @@ -0,0 +1,30 @@ +/* + * Copyright (C) 2018, Emilio G. Cota + * + * License: GNU GPL, version 2 or later. + * See the COPYING file in the top-level directory. + */ +#include +#include +#include +#include +#include +#include + +#include + +/* + * Empty TB translation callback. + * This allows us to measure the overhead of injecting and then + * removing empty instrumentation. + */ +static void vcpu_tb_trans(qemu_plugin_id_t id, struct qemu_plugin_tb *tb) +{ } + +QEMU_PLUGIN_EXPORT int qemu_plugin_install(qemu_plugin_id_t id, + const qemu_info_t *info, + int argc, char **argv) +{ + qemu_plugin_register_vcpu_tb_trans_cb(id, vcpu_tb_trans); + return 0; +} diff --git a/tests/plugin/insn.c b/tests/plugin/insn.c new file mode 100644 index 00000000000..e5fd07fb64b --- /dev/null +++ b/tests/plugin/insn.c @@ -0,0 +1,61 @@ +/* + * Copyright (C) 2018, Emilio G. Cota + * + * License: GNU GPL, version 2 or later. + * See the COPYING file in the top-level directory. + */ +#include +#include +#include +#include +#include +#include +#include + +#include + +static uint64_t insn_count; +static bool do_inline; + +static void vcpu_insn_exec_before(unsigned int cpu_index, void *udata) +{ + insn_count++; +} + +static void vcpu_tb_trans(qemu_plugin_id_t id, struct qemu_plugin_tb *tb) +{ + size_t n = qemu_plugin_tb_n_insns(tb); + size_t i; + + for (i = 0; i < n; i++) { + struct qemu_plugin_insn *insn = qemu_plugin_tb_get_insn(tb, i); + + if (do_inline) { + qemu_plugin_register_vcpu_insn_exec_inline( + insn, QEMU_PLUGIN_INLINE_ADD_U64, &insn_count, 1); + } else { + qemu_plugin_register_vcpu_insn_exec_cb( + insn, vcpu_insn_exec_before, QEMU_PLUGIN_CB_NO_REGS, NULL); + } + } +} + +static void plugin_exit(qemu_plugin_id_t id, void *p) +{ + g_autofree gchar *out; + out = g_strdup_printf("insns: %" PRIu64 "\n", insn_count); + qemu_plugin_outs(out); +} + +QEMU_PLUGIN_EXPORT int qemu_plugin_install(qemu_plugin_id_t id, + const qemu_info_t *info, + int argc, char **argv) +{ + if (argc && !strcmp(argv[0], "inline")) { + do_inline = true; + } + + qemu_plugin_register_vcpu_tb_trans_cb(id, vcpu_tb_trans); + qemu_plugin_register_atexit_cb(id, plugin_exit, NULL); + return 0; +} diff --git a/tests/plugin/mem.c b/tests/plugin/mem.c new file mode 100644 index 00000000000..d9673889896 --- /dev/null +++ b/tests/plugin/mem.c @@ -0,0 +1,97 @@ +/* + * Copyright (C) 2018, Emilio G. Cota + * + * License: GNU GPL, version 2 or later. + * See the COPYING file in the top-level directory. + */ +#include +#include +#include +#include +#include +#include +#include + +#include + +static uint64_t mem_count; +static uint64_t io_count; +static bool do_inline; +static bool do_haddr; +static enum qemu_plugin_mem_rw rw = QEMU_PLUGIN_MEM_RW; + +static void plugin_exit(qemu_plugin_id_t id, void *p) +{ + g_autoptr(GString) out = g_string_new(""); + + g_string_printf(out, "mem accesses: %" PRIu64 "\n", mem_count); + if (do_haddr) { + g_string_append_printf(out, "io accesses: %" PRIu64 "\n", mem_count); + } + qemu_plugin_outs(out->str); +} + +static void vcpu_mem(unsigned int cpu_index, qemu_plugin_meminfo_t meminfo, + uint64_t vaddr, void *udata) +{ + if (do_haddr) { + struct qemu_plugin_hwaddr *hwaddr; + hwaddr = qemu_plugin_get_hwaddr(meminfo, vaddr); + if (qemu_plugin_hwaddr_is_io(hwaddr)) { + io_count++; + } else { + mem_count++; + } + } else { + mem_count++; + } +} + +static void vcpu_tb_trans(qemu_plugin_id_t id, struct qemu_plugin_tb *tb) +{ + size_t n = qemu_plugin_tb_n_insns(tb); + size_t i; + + for (i = 0; i < n; i++) { + struct qemu_plugin_insn *insn = qemu_plugin_tb_get_insn(tb, i); + + if (do_inline) { + qemu_plugin_register_vcpu_mem_inline(insn, rw, + QEMU_PLUGIN_INLINE_ADD_U64, + &mem_count, 1); + } else { + qemu_plugin_register_vcpu_mem_cb(insn, vcpu_mem, + QEMU_PLUGIN_CB_NO_REGS, + rw, NULL); + } + } +} + +QEMU_PLUGIN_EXPORT int qemu_plugin_install(qemu_plugin_id_t id, + const qemu_info_t *info, + int argc, char **argv) +{ + if (argc) { + if (argc >= 3) { + if (!strcmp(argv[2], "haddr")) { + do_haddr = true; + } + } + if (argc >= 2) { + const char *str = argv[1]; + + if (!strcmp(str, "r")) { + rw = QEMU_PLUGIN_MEM_R; + } else if (!strcmp(str, "w")) { + rw = QEMU_PLUGIN_MEM_W; + } + } + if (!strcmp(argv[0], "inline")) { + do_inline = true; + } + } + + qemu_plugin_register_vcpu_tb_trans_cb(id, vcpu_tb_trans); + qemu_plugin_register_atexit_cb(id, plugin_exit, NULL); + return 0; +}