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From: "Alex Bennée" <alex.bennee@linaro.org>
To: peter.maydell@linaro.org
Cc: "Richard Henderson" <richard.henderson@linaro.org>,
	"Emilio G. Cota" <cota@braap.org>,
	"Alex Bennée" <alex.bennee@linaro.org>,
	qemu-devel@nongnu.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> (raw)
In-Reply-To: <20191025063713.23374-1-alex.bennee@linaro.org>

From: "Emilio G. Cota" <cota@braap.org>

Pass arguments with -plugin=libfoo.so,arg=bar,arg=baz

Signed-off-by: Emilio G. Cota <cota@braap.org>
Signed-off-by: Alex Bennée <alex.bennee@linaro.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>

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 <cota@braap.org>
+ *
+ * License: GNU GPL, version 2 or later.
+ *   See the COPYING file in the top-level directory.
+ */
+#include <inttypes.h>
+#include <assert.h>
+#include <stdlib.h>
+#include <string.h>
+#include <unistd.h>
+#include <stdio.h>
+#include <glib.h>
+
+#include <qemu-plugin.h>
+
+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 <cota@braap.org>
+ *
+ * License: GNU GPL, version 2 or later.
+ *   See the COPYING file in the top-level directory.
+ */
+#include <inttypes.h>
+#include <assert.h>
+#include <stdlib.h>
+#include <string.h>
+#include <unistd.h>
+#include <stdio.h>
+
+#include <qemu-plugin.h>
+
+/*
+ * 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 <cota@braap.org>
+ *
+ * License: GNU GPL, version 2 or later.
+ *   See the COPYING file in the top-level directory.
+ */
+#include <inttypes.h>
+#include <assert.h>
+#include <stdlib.h>
+#include <string.h>
+#include <unistd.h>
+#include <stdio.h>
+#include <glib.h>
+
+#include <qemu-plugin.h>
+
+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 <cota@braap.org>
+ *
+ * License: GNU GPL, version 2 or later.
+ *   See the COPYING file in the top-level directory.
+ */
+#include <inttypes.h>
+#include <assert.h>
+#include <stdlib.h>
+#include <string.h>
+#include <unistd.h>
+#include <stdio.h>
+#include <glib.h>
+
+#include <qemu-plugin.h>
+
+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;
+}
-- 
2.20.1



  parent reply index

Thread overview: 84+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2019-10-25  6:36 [PULL v2 00/73] tcg plugins and testing updates Alex Bennée
2019-10-25  6:36 ` [PULL v2 01/73] travis.yml: reduce scope of the --enable-debug build Alex Bennée
2019-10-25  6:36 ` [PULL v2 02/73] travis.yml: Add libvdeplug-dev to compile-test net/vde.c Alex Bennée
2019-10-25  6:36 ` [PULL v2 03/73] travis.yml: Use libsdl2 instead of libsdl1.2, and install libsdl2-image Alex Bennée
2019-10-25  6:36 ` [PULL v2 04/73] travis.yml: Use newer version of libgnutls and libpng Alex Bennée
2019-10-25  6:36 ` [PULL v2 05/73] travis.yml: Fix the ccache lines Alex Bennée
2019-10-25  6:36 ` [PULL v2 06/73] travis.yml: Test the release tarball Alex Bennée
2019-10-25  6:36 ` [PULL v2 07/73] travis.yml: bump Xcode 10 to latest dot release Alex Bennée
2019-10-25  6:36 ` [PULL v2 08/73] cirrus.yml: add latest Xcode build target Alex Bennée
2019-10-25  6:36 ` [PULL v2 09/73] tests/vm: netbsd autoinstall, using serial console Alex Bennée
2019-10-25  6:36 ` [PULL v2 10/73] tests/vm: Let subclasses disable IPv6 Alex Bennée
2019-10-25  6:36 ` [PULL v2 11/73] tests/vm/netbsd: Disable IPv6 Alex Bennée
2019-10-25  6:36 ` [PULL v2 12/73] travis.yml: cache the clang sanitizer build Alex Bennée
2019-10-25  6:36 ` [PULL v2 13/73] gitlab-ci.yml: Use libvdeplug-dev to compile-test the VDE network backend Alex Bennée
2019-10-25  6:36 ` [PULL v2 14/73] travis.yml: --enable-debug-tcg to check-tcg Alex Bennée
2019-10-25  6:36 ` [PULL v2 15/73] tests/docker: set HOST_ARCH if we don't have ARCH Alex Bennée
2019-10-25  6:36 ` [PULL v2 16/73] tests/docker: update Travis image to a more current version Alex Bennée
2019-10-25  6:36 ` [PULL v2 17/73] trace: expand mem_info:size_shift to 4 bits Alex Bennée
2019-10-25  6:36 ` [PULL v2 18/73] trace: add mmu_index to mem_info Alex Bennée
2019-10-25  6:36 ` [PULL v2 19/73] cpu: introduce cpu_in_exclusive_context() Alex Bennée
2019-10-25  6:36 ` [PULL v2 20/73] translate-all: use cpu_in_exclusive_work_context() in tb_flush Alex Bennée
2019-10-25  6:36 ` [PULL v2 21/73] docs/devel: add plugins.rst design document Alex Bennée
2019-10-25  6:36 ` [PULL v2 22/73] plugin: add user-facing API Alex Bennée
2019-10-25  6:36 ` [PULL v2 23/73] plugin: add core code Alex Bennée
2019-10-25  6:36 ` [PULL v2 24/73] plugin: add implementation of the api Alex Bennée
2019-10-25  6:36 ` [PULL v2 25/73] queue: add QTAILQ_REMOVE_SEVERAL Alex Bennée
2019-10-25  6:36 ` [PULL v2 26/73] cputlb: document get_page_addr_code Alex Bennée
2019-10-25  6:36 ` [PULL v2 27/73] cputlb: introduce get_page_addr_code_hostp Alex Bennée
2019-10-25  6:36 ` [PULL v2 28/73] tcg: add tcg_gen_st_ptr Alex Bennée
2019-10-25  6:36 ` [PULL v2 29/73] plugin-gen: add module for TCG-related code Alex Bennée
2019-10-25  6:36 ` [PULL v2 30/73] atomic_template: add inline trace/plugin helpers Alex Bennée
2019-10-25  6:36 ` [PULL v2 31/73] tcg: let plugins instrument virtual memory accesses Alex Bennée
2019-10-25  6:36 ` [PULL v2 32/73] plugins: implement helpers for resolving hwaddr Alex Bennée
2019-10-25  6:36 ` [PULL v2 33/73] translate-all: notify plugin code of tb_flush Alex Bennée
2019-10-25  6:36 ` [PULL v2 34/73] *-user: notify plugin of exit Alex Bennée
2019-10-25  6:36 ` [PULL v2 35/73] *-user: plugin syscalls Alex Bennée
2019-10-25  6:36 ` [PULL v2 36/73] cpu: hook plugin vcpu events Alex Bennée
2019-10-25  6:36 ` [PULL v2 37/73] plugin-gen: add plugin_insn_append Alex Bennée
2019-10-25  6:36 ` [PULL v2 38/73] cputlb: ensure _cmmu helper functions follow the naming standard Alex Bennée
2019-10-25  6:36 ` [PULL v2 39/73] translator: add translator_ld{ub,sw,uw,l,q} Alex Bennée
2019-10-25  6:36 ` [PULL v2 40/73] target/arm: fetch code with translator_ld Alex Bennée
2019-10-25  6:36 ` [PULL v2 41/73] target/ppc: " Alex Bennée
2019-10-25  6:36 ` [PULL v2 42/73] target/sh4: " Alex Bennée
2019-10-25  6:36 ` [PULL v2 43/73] target/i386: " Alex Bennée
2019-10-25  6:36 ` [PULL v2 44/73] target/hppa: " Alex Bennée
2019-10-25  6:36 ` [PULL v2 45/73] target/m68k: " Alex Bennée
2019-10-25  6:36 ` [PULL v2 46/73] target/alpha: " Alex Bennée
2019-10-25  7:40   ` USB-audio sound issues with qemu-system-ppc in Linux and Windows Howard Spoelstra
2019-10-25  6:36 ` [PULL v2 47/73] target/riscv: fetch code with translator_ld Alex Bennée
2019-10-25  6:36 ` [PULL v2 48/73] target/sparc: " Alex Bennée
2019-10-25  6:36 ` [PULL v2 49/73] target/xtensa: " Alex Bennée
2019-10-25  6:36 ` [PULL v2 50/73] target/openrisc: " Alex Bennée
2019-10-25  6:36 ` [PULL v2 51/73] translator: inject instrumentation from plugins Alex Bennée
2019-10-25  6:36 ` [PULL v2 52/73] configure: add --enable-plugins Alex Bennée
2019-10-25  6:36 ` [PULL v2 53/73] plugin: add API symbols to qemu-plugins.symbols Alex Bennée
2019-10-25  6:36 ` [PULL v2 54/73] plugin: expand the plugin_init function to include an info block Alex Bennée
2019-10-25  6:36 ` [PULL v2 55/73] plugin: add qemu_plugin_insn_disas helper Alex Bennée
2019-10-25  6:36 ` [PULL v2 56/73] plugin: add qemu_plugin_outs helper Alex Bennée
2019-10-25  6:36 ` [PULL v2 57/73] vl: support -plugin option Alex Bennée
2019-10-25  6:36 ` [PULL v2 58/73] linux-user: " Alex Bennée
2019-10-25  6:36 ` Alex Bennée [this message]
2019-10-25  6:37 ` [PULL v2 60/73] tests/tcg/Makefile.target: fix path to config-host.mak Alex Bennée
2019-10-25  6:37 ` [PULL v2 61/73] tests/tcg: set QEMU_OPTS for all cris runs Alex Bennée
2019-10-25  6:37 ` [PULL v2 62/73] tests/tcg: move "virtual" tests to EXTRA_TESTS Alex Bennée
2019-10-25  6:37 ` [PULL v2 63/73] tests/tcg: drop test-i386-fprem from TESTS when not SLOW Alex Bennée
2019-10-25  6:37 ` [PULL v2 64/73] tests/tcg: enable plugin testing Alex Bennée
2019-10-25  6:37 ` [PULL v2 65/73] tests/plugin: add a hotblocks plugin Alex Bennée
2019-10-25  6:37 ` [PULL v2 66/73] tests/plugin: add instruction execution breakdown Alex Bennée
2019-10-25  6:37 ` [PULL v2 67/73] tests/plugin: add hotpages to analyse memory access patterns Alex Bennée
2019-10-25  6:37 ` [PULL v2 68/73] accel/stubs: reduce headers from tcg-stub Alex Bennée
2019-10-25  6:37 ` [PULL v2 69/73] include/exec: wrap cpu_ldst.h in CONFIG_TCG Alex Bennée
2019-10-25  6:37 ` [PULL v2 70/73] .travis.yml: add --enable-plugins tests Alex Bennée
2019-10-25  6:37 ` [PULL v2 71/73] scripts/checkpatch.pl: don't complain about (foo, /* empty */) Alex Bennée
2019-10-25  6:37 ` [PULL v2 72/73] MAINTAINERS: add me for the TCG plugins code Alex Bennée
2019-10-25  6:37 ` [PULL v2 73/73] travis.yml: enable linux-gcc-debug-tcg cache Alex Bennée
2019-10-25 12:59 ` [PULL v2 00/73] tcg plugins and testing updates Markus Armbruster
2019-10-25 15:04   ` Alex Bennée
2019-10-25 20:23     ` Markus Armbruster
2019-10-27 19:44       ` Peter Maydell
2019-10-28  9:07         ` Alex Bennée
2019-11-06 12:42       ` Markus Armbruster
2019-11-08 17:23         ` Peter Maydell
2019-10-25 16:53 ` Peter Maydell
2019-10-25 19:38   ` Alex Bennée

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