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/*
* 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>
QEMU_PLUGIN_EXPORT int qemu_plugin_version = QEMU_PLUGIN_VERSION;
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;
}
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