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7#include <inttypes.h>
8#include <assert.h>
9#include <stdlib.h>
10#include <string.h>
11#include <unistd.h>
12#include <stdio.h>
13#include <glib.h>
14
15#include <qemu-plugin.h>
16
17QEMU_PLUGIN_EXPORT int qemu_plugin_version = QEMU_PLUGIN_VERSION;
18
19static uint64_t insn_count;
20static bool do_inline;
21
22static void vcpu_insn_exec_before(unsigned int cpu_index, void *udata)
23{
24 static uint64_t last_pc;
25 uint64_t this_pc = GPOINTER_TO_UINT(udata);
26 if (this_pc == last_pc) {
27 g_autofree gchar *out = g_strdup_printf("detected repeat execution @ 0x%"
28 PRIx64 "\n", this_pc);
29 qemu_plugin_outs(out);
30 }
31 last_pc = this_pc;
32 insn_count++;
33}
34
35static void vcpu_tb_trans(qemu_plugin_id_t id, struct qemu_plugin_tb *tb)
36{
37 size_t n = qemu_plugin_tb_n_insns(tb);
38 size_t i;
39
40 for (i = 0; i < n; i++) {
41 struct qemu_plugin_insn *insn = qemu_plugin_tb_get_insn(tb, i);
42
43 if (do_inline) {
44 qemu_plugin_register_vcpu_insn_exec_inline(
45 insn, QEMU_PLUGIN_INLINE_ADD_U64, &insn_count, 1);
46 } else {
47 uint64_t vaddr = qemu_plugin_insn_vaddr(insn);
48 qemu_plugin_register_vcpu_insn_exec_cb(
49 insn, vcpu_insn_exec_before, QEMU_PLUGIN_CB_NO_REGS,
50 GUINT_TO_POINTER(vaddr));
51 }
52 }
53}
54
55static void plugin_exit(qemu_plugin_id_t id, void *p)
56{
57 g_autofree gchar *out = g_strdup_printf("insns: %" PRIu64 "\n", insn_count);
58 qemu_plugin_outs(out);
59}
60
61QEMU_PLUGIN_EXPORT int qemu_plugin_install(qemu_plugin_id_t id,
62 const qemu_info_t *info,
63 int argc, char **argv)
64{
65 if (argc && !strcmp(argv[0], "inline")) {
66 do_inline = true;
67 }
68
69 qemu_plugin_register_vcpu_tb_trans_cb(id, vcpu_tb_trans);
70 qemu_plugin_register_atexit_cb(id, plugin_exit, NULL);
71 return 0;
72}
73
