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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 inline_mem_count;
20static uint64_t cb_mem_count;
21static uint64_t io_count;
22static bool do_inline, do_callback;
23static bool do_haddr;
24static enum qemu_plugin_mem_rw rw = QEMU_PLUGIN_MEM_RW;
25
26static void plugin_exit(qemu_plugin_id_t id, void *p)
27{
28 g_autoptr(GString) out = g_string_new("");
29
30 if (do_inline) {
31 g_string_printf(out, "inline mem accesses: %" PRIu64 "\n", inline_mem_count);
32 }
33 if (do_callback) {
34 g_string_append_printf(out, "callback mem accesses: %" PRIu64 "\n", cb_mem_count);
35 }
36 if (do_haddr) {
37 g_string_append_printf(out, "io accesses: %" PRIu64 "\n", io_count);
38 }
39 qemu_plugin_outs(out->str);
40}
41
42static void vcpu_mem(unsigned int cpu_index, qemu_plugin_meminfo_t meminfo,
43 uint64_t vaddr, void *udata)
44{
45 if (do_haddr) {
46 struct qemu_plugin_hwaddr *hwaddr;
47 hwaddr = qemu_plugin_get_hwaddr(meminfo, vaddr);
48 if (qemu_plugin_hwaddr_is_io(hwaddr)) {
49 io_count++;
50 } else {
51 cb_mem_count++;
52 }
53 } else {
54 cb_mem_count++;
55 }
56}
57
58static void vcpu_tb_trans(qemu_plugin_id_t id, struct qemu_plugin_tb *tb)
59{
60 size_t n = qemu_plugin_tb_n_insns(tb);
61 size_t i;
62
63 for (i = 0; i < n; i++) {
64 struct qemu_plugin_insn *insn = qemu_plugin_tb_get_insn(tb, i);
65
66 if (do_inline) {
67 qemu_plugin_register_vcpu_mem_inline(insn, rw,
68 QEMU_PLUGIN_INLINE_ADD_U64,
69 &inline_mem_count, 1);
70 }
71 if (do_callback) {
72 qemu_plugin_register_vcpu_mem_cb(insn, vcpu_mem,
73 QEMU_PLUGIN_CB_NO_REGS,
74 rw, NULL);
75 }
76 }
77}
78
79QEMU_PLUGIN_EXPORT int qemu_plugin_install(qemu_plugin_id_t id,
80 const qemu_info_t *info,
81 int argc, char **argv)
82{
83
84 for (int i = 0; i < argc; i++) {
85 char *opt = argv[i];
86 g_autofree char **tokens = g_strsplit(opt, "=", 2);
87
88 if (g_strcmp0(tokens[0], "haddr") == 0) {
89 if (!qemu_plugin_bool_parse(tokens[0], tokens[1], &do_haddr)) {
90 fprintf(stderr, "boolean argument parsing failed: %s\n", opt);
91 return -1;
92 }
93 } else if (g_strcmp0(tokens[0], "track") == 0) {
94 if (g_strcmp0(tokens[1], "r") == 0) {
95 rw = QEMU_PLUGIN_MEM_R;
96 } else if (g_strcmp0(tokens[1], "w") == 0) {
97 rw = QEMU_PLUGIN_MEM_W;
98 } else if (g_strcmp0(tokens[1], "rw") == 0) {
99 rw = QEMU_PLUGIN_MEM_RW;
100 } else {
101 fprintf(stderr, "invaild value for argument track: %s\n", opt);
102 return -1;
103 }
104 } else if (g_strcmp0(tokens[0], "inline") == 0) {
105 if (!qemu_plugin_bool_parse(tokens[0], tokens[1], &do_inline)) {
106 fprintf(stderr, "boolean argument parsing failed: %s\n", opt);
107 return -1;
108 }
109 } else if (g_strcmp0(tokens[0], "callback") == 0) {
110 if (!qemu_plugin_bool_parse(tokens[0], tokens[1], &do_callback)) {
111 fprintf(stderr, "boolean argument parsing failed: %s\n", opt);
112 return -1;
113 }
114 } else {
115 fprintf(stderr, "option parsing failed: %s\n", opt);
116 return -1;
117 }
118 }
119
120 qemu_plugin_register_vcpu_tb_trans_cb(id, vcpu_tb_trans);
121 qemu_plugin_register_atexit_cb(id, plugin_exit, NULL);
122 return 0;
123}
124
