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 17 QEMU_PLUGIN_EXPORT int qemu_plugin_version = QEMU_PLUGIN_VERSION; 18 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 = g_strdup_printf("insns: %" PRIu64 "\n", insn_count); 48 qemu_plugin_outs(out); 49 } 50 51 QEMU_PLUGIN_EXPORT int qemu_plugin_install(qemu_plugin_id_t id, 52 const qemu_info_t *info, 53 int argc, char **argv) 54 { 55 if (argc && !strcmp(argv[0], "inline")) { 56 do_inline = true; 57 } 58 59 qemu_plugin_register_vcpu_tb_trans_cb(id, vcpu_tb_trans); 60 qemu_plugin_register_atexit_cb(id, plugin_exit, NULL); 61 return 0; 62 } 63