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 bb_count; 20 static uint64_t insn_count; 21 static bool do_inline; 22 23 static void plugin_exit(qemu_plugin_id_t id, void *p) 24 { 25 g_autofree gchar *out; 26 out = g_strdup_printf("bb's: %" PRIu64", insns: %" PRIu64 "\n", 27 bb_count, insn_count); 28 qemu_plugin_outs(out); 29 } 30 31 static void vcpu_tb_exec(unsigned int cpu_index, void *udata) 32 { 33 unsigned long n_insns = (unsigned long)udata; 34 35 insn_count += n_insns; 36 bb_count++; 37 } 38 39 static void vcpu_tb_trans(qemu_plugin_id_t id, struct qemu_plugin_tb *tb) 40 { 41 unsigned long n_insns = qemu_plugin_tb_n_insns(tb); 42 43 if (do_inline) { 44 qemu_plugin_register_vcpu_tb_exec_inline(tb, QEMU_PLUGIN_INLINE_ADD_U64, 45 &bb_count, 1); 46 qemu_plugin_register_vcpu_tb_exec_inline(tb, QEMU_PLUGIN_INLINE_ADD_U64, 47 &insn_count, n_insns); 48 } else { 49 qemu_plugin_register_vcpu_tb_exec_cb(tb, vcpu_tb_exec, 50 QEMU_PLUGIN_CB_NO_REGS, 51 (void *)n_insns); 52 } 53 } 54 55 QEMU_PLUGIN_EXPORT int qemu_plugin_install(qemu_plugin_id_t id, 56 const qemu_info_t *info, 57 int argc, char **argv) 58 { 59 if (argc && strcmp(argv[0], "inline") == 0) { 60 do_inline = true; 61 } 62 63 qemu_plugin_register_vcpu_tb_trans_cb(id, vcpu_tb_trans); 64 qemu_plugin_register_atexit_cb(id, plugin_exit, NULL); 65 return 0; 66 } 67