/js/src/sharkctl.cpp
http://github.com/zpao/v8monkey · C++ · 238 lines · 173 code · 30 blank · 35 comment · 15 complexity · 9a57f7a0a3d4d1d4391e10f2d4af5c50 MD5 · raw file
- /* -*- Mode: C; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 4 -*-
- * vim: set ts=8 sw=4 et tw=80:
- *
- * ***** BEGIN LICENSE BLOCK *****
- * Version: MPL 1.1/GPL 2.0/LGPL 2.1
- *
- * The contents of this file are subject to the Mozilla Public License Version
- * 1.1 (the "License"); you may not use this file except in compliance with
- * the License. You may obtain a copy of the License at
- * http://www.mozilla.org/MPL/
- *
- * Software distributed under the License is distributed on an "AS IS" basis,
- * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
- * for the specific language governing rights and limitations under the
- * License.
- *
- * Copyright (C) 2010 Patrick Walton <pcwalton@mimiga.net>
- *
- * Contributor(s):
- * Andreas Gal <gal@mozilla.com>
- *
- * Alternatively, the contents of this file may be used under the terms of
- * either of the GNU General Public License Version 2 or later (the "GPL"),
- * or the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
- * in which case the provisions of the GPL or the LGPL are applicable instead
- * of those above. If you wish to allow use of your version of this file only
- * under the terms of either the GPL or the LGPL, and not to allow others to
- * use your version of this file under the terms of the MPL, indicate your
- * decision by deleting the provisions above and replace them with the notice
- * and other provisions required by the GPL or the LGPL. If you do not delete
- * the provisions above, a recipient may use your version of this file under
- * the terms of any one of the MPL, the GPL or the LGPL.
- *
- * ***** END LICENSE BLOCK ***** */
- #ifdef __APPLE__
- #include "sharkctl.h"
- #include "sharkctl.h"
- #include <stddef.h>
- #include <stdio.h>
- #include <stdlib.h>
- #include <unistd.h>
- #include "jsutil.h"
- #define SHARK_MSG_ACQUIRE 0x29a
- #define SHARK_MSG_RELEASE 0x29b
- #define SHARK_MSG_STOP 0x29c
- #define SHARK_MSG_START 0x29d
- #define RECV_SIZEOF(ty) offsetof(ty, out)
- // Private API in libSystem.dylib
- extern "C" void bootstrap_look_up(mach_port_t special_port, const char *name,
- mach_port_t *dest_port);
- struct chud_client_acquire_msg {
- mach_msg_header_t hdr;
- uint32_t unk0; // always 0
- uint32_t unk1; // always 1
- uint32_t pid;
- uint32_t out[2];
- };
- struct chud_client_start_msg {
- mach_msg_header_t hdr;
- uint32_t unk0; // always 1
- uint32_t name0;
- uint32_t arg2; // always 6
- uint8_t unk1; // always 0
- uint8_t unk2; // always 1
- uint8_t unk3; // uninitialized
- uint8_t unk4; // always 1
- uint32_t unk5; // always 0
- uint32_t unk6; // always 1
- uint32_t name1; // same as name0
- };
- struct chud_client_stop_msg {
- mach_msg_header_t hdr;
- uint32_t out[5];
- };
- struct chud_client_release_msg {
- mach_msg_header_t hdr;
- uint32_t unk0; // always 0
- uint32_t unk1; // always 1
- uint32_t pid;
- uint32_t out[2];
- };
- static mach_port_t
- CreatePort(void)
- {
- mach_port_t bootstrap_port, shark_port = 0;
- task_get_special_port(mach_task_self(), TASK_BOOTSTRAP_PORT,
- &bootstrap_port);
- bootstrap_look_up(bootstrap_port, "CHUD_IPC", &shark_port);
- return shark_port;
- }
- static mach_msg_return_t
- Connect(mach_port_t shark_port)
- {
- mach_port_t reply_port = mig_get_reply_port();
- struct chud_client_acquire_msg msg;
- msg.hdr.msgh_bits = 0x1513;
- msg.hdr.msgh_size = sizeof(mach_msg_header_t);
- msg.hdr.msgh_remote_port = shark_port;
- msg.hdr.msgh_local_port = reply_port;
- msg.hdr.msgh_reserved = 0;
- msg.hdr.msgh_id = SHARK_MSG_ACQUIRE;
- msg.unk0 = 0;
- msg.unk1 = 1;
- msg.pid = getpid();
- JS_ASSERT(RECV_SIZEOF(struct chud_client_acquire_msg) == 0x24);
- JS_ASSERT(sizeof(msg) == 0x2c);
- mach_msg_return_t result = mach_msg(&msg.hdr, MACH_SEND_MSG | MACH_RCV_MSG,
- RECV_SIZEOF(struct chud_client_acquire_msg),
- sizeof(msg), reply_port, 0, 0);
- mig_dealloc_reply_port(reply_port);
- return result;
- }
- static mach_msg_return_t
- Start(mach_port_t shark_port, uint32_t name)
- {
- mach_port_t reply_port = mig_get_reply_port();
- struct chud_client_start_msg msg;
- msg.hdr.msgh_bits = 0x80001513;
- msg.hdr.msgh_size = sizeof(mach_msg_header_t);
- msg.hdr.msgh_remote_port = shark_port;
- msg.hdr.msgh_local_port = reply_port;
- msg.hdr.msgh_reserved = 0;
- msg.hdr.msgh_id = SHARK_MSG_START;
- msg.unk0 = 1;
- msg.name0 = name;
- msg.arg2 = 6;
- msg.unk1 = 0;
- msg.unk2 = 1;
- msg.unk3 = 0;
- msg.unk4 = 1;
- msg.unk5 = 0;
- msg.unk6 = 1;
- msg.name1 = name;
- JS_ASSERT(sizeof(msg) == 0x34);
- mach_msg_return_t result = mach_msg(&msg.hdr, MACH_SEND_MSG | MACH_RCV_MSG,
- sizeof(msg), 0x30, reply_port, 0, 0);
- mig_dealloc_reply_port(reply_port);
- return result;
- }
- mach_msg_return_t
- Stop(mach_port_t shark_port)
- {
- mach_port_t reply_port = mig_get_reply_port();
- struct chud_client_stop_msg msg;
- msg.hdr.msgh_bits = 0x1513;
- msg.hdr.msgh_size = sizeof(mach_msg_header_t);
- msg.hdr.msgh_remote_port = shark_port;
- msg.hdr.msgh_local_port = reply_port;
- msg.hdr.msgh_reserved = 0;
- msg.hdr.msgh_id = SHARK_MSG_STOP;
- JS_ASSERT(RECV_SIZEOF(struct chud_client_stop_msg) == 0x18);
- JS_ASSERT(sizeof(msg) == 0x2c);
- mach_msg_return_t result = mach_msg(&msg.hdr, MACH_SEND_MSG | MACH_RCV_MSG,
- RECV_SIZEOF(struct chud_client_stop_msg),
- sizeof(msg), reply_port, 0, 0);
- mig_dealloc_reply_port(reply_port);
- return result;
- }
- static mach_msg_return_t
- Disconnect(mach_port_t shark_port)
- {
- mach_port_t reply_port = mig_get_reply_port();
- struct chud_client_release_msg msg;
- msg.hdr.msgh_bits = 0x1513;
- msg.hdr.msgh_size = sizeof(mach_msg_header_t);
- msg.hdr.msgh_remote_port = shark_port;
- msg.hdr.msgh_local_port = reply_port;
- msg.hdr.msgh_reserved = 0;
- msg.hdr.msgh_id = SHARK_MSG_RELEASE;
- msg.unk0 = 0;
- msg.unk1 = 1;
- msg.pid = getpid();
- JS_ASSERT(RECV_SIZEOF(struct chud_client_release_msg) == 0x24);
- JS_ASSERT(sizeof(msg) == 0x2c);
- mach_msg_return_t result = mach_msg(&msg.hdr, MACH_SEND_MSG | MACH_RCV_MSG,
- RECV_SIZEOF(struct chud_client_release_msg),
- sizeof(msg), reply_port, 0, 0);
- mig_dealloc_reply_port(reply_port);
- return result;
- }
- static mach_port_t shark_port = 0;
- static bool connected = false;
- static bool running = false;
- namespace Shark {
- bool
- Start()
- {
- if (!shark_port && !(shark_port = CreatePort()))
- return false;
- if (!connected && Connect(shark_port))
- return false;
- connected = true;
- if (!running && ::Start(shark_port, 0xdeadbeef))
- return false;
- return running = true;
- };
- void
- Stop()
- {
- if (!shark_port || !connected)
- return;
- ::Stop(shark_port);
- running = false;
- Disconnect(shark_port);
- connected = false;
- }
- }
- #endif