| 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 | |
| 14 | #include <qemu-plugin.h> |
| 15 | |
| 16 | QEMU_PLUGIN_EXPORT int qemu_plugin_version = QEMU_PLUGIN_VERSION; |
| 17 | |
| 18 | /* |
| 19 | * Empty TB translation callback. |
| 20 | * This allows us to measure the overhead of injecting and then |
| 21 | * removing empty instrumentation. |
| 22 | */ |
| 23 | static void vcpu_tb_trans(struct qemu_plugin_tb *tb, void *userdata) |
| 24 | { } |
| 25 | |
| 26 | QEMU_PLUGIN_EXPORT int qemu_plugin_install(qemu_plugin_id_t id, |
| 27 | const qemu_info_t *info, |
| 28 | int argc, char **argv) |
| 29 | { |
| 30 | qemu_plugin_register_vcpu_tb_trans_cb(id, vcpu_tb_trans, NULL); |
| 31 | return 0; |
| 32 | } |