99 lines
2.7 KiB
C
99 lines
2.7 KiB
C
/*
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* Copyright (C) 2018, Emilio G. Cota <cota@braap.org>
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*
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* License: GNU GPL, version 2 or later.
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* See the COPYING file in the top-level directory.
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*/
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#include <inttypes.h>
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#include <assert.h>
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#include <stdlib.h>
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#include <string.h>
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#include <unistd.h>
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#include <stdio.h>
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#include <glib.h>
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#include <qemu-plugin.h>
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QEMU_PLUGIN_EXPORT int qemu_plugin_version = QEMU_PLUGIN_VERSION;
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static uint64_t mem_count;
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static uint64_t io_count;
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static bool do_inline;
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static bool do_haddr;
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static enum qemu_plugin_mem_rw rw = QEMU_PLUGIN_MEM_RW;
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static void plugin_exit(qemu_plugin_id_t id, void *p)
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{
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g_autoptr(GString) out = g_string_new("");
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g_string_printf(out, "mem accesses: %" PRIu64 "\n", mem_count);
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if (do_haddr) {
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g_string_append_printf(out, "io accesses: %" PRIu64 "\n", io_count);
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}
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qemu_plugin_outs(out->str);
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}
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static void vcpu_mem(unsigned int cpu_index, qemu_plugin_meminfo_t meminfo,
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uint64_t vaddr, void *udata)
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{
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if (do_haddr) {
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struct qemu_plugin_hwaddr *hwaddr;
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hwaddr = qemu_plugin_get_hwaddr(meminfo, vaddr);
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if (qemu_plugin_hwaddr_is_io(hwaddr)) {
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io_count++;
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} else {
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mem_count++;
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}
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} else {
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mem_count++;
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}
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}
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static void vcpu_tb_trans(qemu_plugin_id_t id, struct qemu_plugin_tb *tb)
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{
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size_t n = qemu_plugin_tb_n_insns(tb);
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size_t i;
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for (i = 0; i < n; i++) {
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struct qemu_plugin_insn *insn = qemu_plugin_tb_get_insn(tb, i);
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if (do_inline) {
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qemu_plugin_register_vcpu_mem_inline(insn, rw,
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QEMU_PLUGIN_INLINE_ADD_U64,
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&mem_count, 1);
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} else {
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qemu_plugin_register_vcpu_mem_cb(insn, vcpu_mem,
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QEMU_PLUGIN_CB_NO_REGS,
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rw, NULL);
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}
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}
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}
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QEMU_PLUGIN_EXPORT int qemu_plugin_install(qemu_plugin_id_t id,
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const qemu_info_t *info,
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int argc, char **argv)
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{
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if (argc) {
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if (argc >= 3) {
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if (!strcmp(argv[2], "haddr")) {
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do_haddr = true;
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}
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}
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if (argc >= 2) {
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const char *str = argv[1];
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if (!strcmp(str, "r")) {
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rw = QEMU_PLUGIN_MEM_R;
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} else if (!strcmp(str, "w")) {
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rw = QEMU_PLUGIN_MEM_W;
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}
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}
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if (!strcmp(argv[0], "inline")) {
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do_inline = true;
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}
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}
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qemu_plugin_register_vcpu_tb_trans_cb(id, vcpu_tb_trans);
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qemu_plugin_register_atexit_cb(id, plugin_exit, NULL);
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return 0;
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}
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