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671f760b EC |
1 | /* |
2 | * Copyright (C) 2018, Emilio G. Cota <cota@braap.org> | |
3 | * | |
4 | * License: GNU GPL, version 2 or later. | |
5 | * See the COPYING file in the top-level directory. | |
6 | */ | |
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 | ||
3fb356cc AB |
17 | QEMU_PLUGIN_EXPORT int qemu_plugin_version = QEMU_PLUGIN_VERSION; |
18 | ||
671f760b EC |
19 | static uint64_t insn_count; |
20 | static bool do_inline; | |
21 | ||
22 | static void vcpu_insn_exec_before(unsigned int cpu_index, void *udata) | |
23 | { | |
24 | insn_count++; | |
25 | } | |
26 | ||
27 | static void vcpu_tb_trans(qemu_plugin_id_t id, struct qemu_plugin_tb *tb) | |
28 | { | |
29 | size_t n = qemu_plugin_tb_n_insns(tb); | |
30 | size_t i; | |
31 | ||
32 | for (i = 0; i < n; i++) { | |
33 | struct qemu_plugin_insn *insn = qemu_plugin_tb_get_insn(tb, i); | |
34 | ||
35 | if (do_inline) { | |
36 | qemu_plugin_register_vcpu_insn_exec_inline( | |
37 | insn, QEMU_PLUGIN_INLINE_ADD_U64, &insn_count, 1); | |
38 | } else { | |
39 | qemu_plugin_register_vcpu_insn_exec_cb( | |
40 | insn, vcpu_insn_exec_before, QEMU_PLUGIN_CB_NO_REGS, NULL); | |
41 | } | |
42 | } | |
43 | } | |
44 | ||
45 | static void plugin_exit(qemu_plugin_id_t id, void *p) | |
46 | { | |
47 | g_autofree gchar *out; | |
48 | out = g_strdup_printf("insns: %" PRIu64 "\n", insn_count); | |
49 | qemu_plugin_outs(out); | |
50 | } | |
51 | ||
52 | QEMU_PLUGIN_EXPORT int qemu_plugin_install(qemu_plugin_id_t id, | |
53 | const qemu_info_t *info, | |
54 | int argc, char **argv) | |
55 | { | |
56 | if (argc && !strcmp(argv[0], "inline")) { | |
57 | do_inline = true; | |
58 | } | |
59 | ||
60 | qemu_plugin_register_vcpu_tb_trans_cb(id, vcpu_tb_trans); | |
61 | qemu_plugin_register_atexit_cb(id, plugin_exit, NULL); | |
62 | return 0; | |
63 | } |