summaryrefslogtreecommitdiff
path: root/tests/plugin
diff options
context:
space:
mode:
Diffstat (limited to 'tests/plugin')
-rw-r--r--tests/plugin/Makefile28
-rw-r--r--tests/plugin/bb.c64
-rw-r--r--tests/plugin/empty.c30
-rw-r--r--tests/plugin/insn.c61
-rw-r--r--tests/plugin/mem.c97
5 files changed, 280 insertions, 0 deletions
diff --git a/tests/plugin/Makefile b/tests/plugin/Makefile
new file mode 100644
index 0000000000..f9a3546ea3
--- /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 0000000000..45e1de5bd6
--- /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 0000000000..3f60f69027
--- /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 0000000000..e5fd07fb64
--- /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 0000000000..d967388989
--- /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;
+}
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-17 11:47:20 +0000