WebSVN – HelenOS – Diff – /branches/tracing/kernel/generic/src/syscall/syscall.c


/*
 * Copyright (c) 2005 Martin Decky
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 *
 * - Redistributions of source code must retain the above copyright
 *   notice, this list of conditions and the following disclaimer.
 * - Redistributions in binary form must reproduce the above copyright
 *   notice, this list of conditions and the following disclaimer in the
 *   documentation and/or other materials provided with the distribution.
 * - The name of the author may not be used to endorse or promote products
 *   derived from this software without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 */
 
/** @addtogroup generic
 * @{
 */
 
/**
 * @file
 * @brief Syscall table and syscall wrappers.
 */
 
#include <syscall/syscall.h>
#include <proc/thread.h>
#include <proc/task.h>
#include <proc/program.h>
#include <mm/as.h>
#include <print.h>
#include <arch.h>
#include <debug.h>
#include <ddi/device.h>
#include <ipc/sysipc.h>
#include <synch/futex.h>
#include <synch/smc.h>
#include <ddi/ddi.h>
#include <ipc/event.h>
#include <security/cap.h>
#include <sysinfo/sysinfo.h>
#include <console/console.h>
#include <udebug/udebug.h>
 
/** Dispatch system call */
unative_t syscall_handler(unative_t a1, unative_t a2, unative_t a3,
    unative_t a4, unative_t a5, unative_t a6, unative_t id)
{
    unative_t rc;
 
#ifdef CONFIG_UDEBUG
    bool debug;
 
    /*
     * Early check for undebugged tasks. We do not lock anything as this
     * test need not be precise in either way.
     */
    debug = THREAD->udebug.active;
   
    if (debug) {
        THREAD->udebug.uspace_state = NULL;
        udebug_syscall_event(a1, a2, a3, a4, a5, a6, id, 0, false);
    }
#endif
   
    if (id < SYSCALL_END) {
        rc = syscall_table[id](a1, a2, a3, a4, a5, a6);
    } else {
        printf("Task %" PRIu64": Unknown syscall %#" PRIxn, TASK->taskid, id);
        task_kill(TASK->taskid);
        thread_exit();
    }
   
    if (THREAD->interrupted)
        thread_exit();
   
#ifdef CONFIG_UDEBUG
    if (debug) {
        udebug_syscall_event(a1, a2, a3, a4, a5, a6, id, rc, true);
   
        /*
         * Stopping point needed for tasks that only invoke
         * non-blocking system calls. Not needed if the task
         * is not being debugged (it cannot block here).
         */
        udebug_stoppable_begin();
        udebug_stoppable_end();
    }
#endif
   
    return rc;
}
 
syshandler_t syscall_table[SYSCALL_END] = {
    (syshandler_t) sys_klog,
    (syshandler_t) sys_tls_set,
   
    /* Thread and task related syscalls. */
    (syshandler_t) sys_thread_create,
    (syshandler_t) sys_thread_exit,
    (syshandler_t) sys_thread_get_id,
   
    (syshandler_t) sys_task_get_id,
    (syshandler_t) sys_task_set_name,
    (syshandler_t) sys_program_spawn_loader,
   
    /* Synchronization related syscalls. */
    (syshandler_t) sys_futex_sleep_timeout,
    (syshandler_t) sys_futex_wakeup,
    (syshandler_t) sys_smc_coherence,
   
    /* Address space related syscalls. */
    (syshandler_t) sys_as_area_create,
    (syshandler_t) sys_as_area_resize,
    (syshandler_t) sys_as_area_change_flags,
    (syshandler_t) sys_as_area_destroy,
   
    /* IPC related syscalls. */
    (syshandler_t) sys_ipc_call_sync_fast,
    (syshandler_t) sys_ipc_call_sync_slow,
    (syshandler_t) sys_ipc_call_async_fast,
    (syshandler_t) sys_ipc_call_async_slow,
    (syshandler_t) sys_ipc_answer_fast,
    (syshandler_t) sys_ipc_answer_slow,
    (syshandler_t) sys_ipc_forward_fast,
    (syshandler_t) sys_ipc_forward_slow,
    (syshandler_t) sys_ipc_wait_for_call,
    (syshandler_t) sys_ipc_hangup,
    (syshandler_t) sys_ipc_register_irq,
    (syshandler_t) sys_ipc_unregister_irq,
 
    /* Event notification syscalls. */
    (syshandler_t) sys_event_subscribe,
   
    /* Capabilities related syscalls. */
    (syshandler_t) sys_cap_grant,
    (syshandler_t) sys_cap_revoke,
   
    /* DDI related syscalls. */
    (syshandler_t) sys_device_assign_devno,
    (syshandler_t) sys_physmem_map,
    (syshandler_t) sys_iospace_enable,
    (syshandler_t) sys_preempt_control,
   
    /* Sysinfo syscalls */
    (syshandler_t) sys_sysinfo_valid,
    (syshandler_t) sys_sysinfo_value,
   
    /* Debug calls */
    (syshandler_t) sys_debug_enable_console,
    (syshandler_t) sys_debug_disable_console,
   
    (syshandler_t) sys_ipc_connect_kbox
};
 
/** @}
 */
 

Rev 4377	Rev 4692
1	/*	1	/*
2	* Copyright (c) 2005 Martin Decky	2	* Copyright (c) 2005 Martin Decky
3	* All rights reserved.	3	* All rights reserved.
4	*	4	*
5	* Redistribution and use in source and binary forms, with or without	5	* Redistribution and use in source and binary forms, with or without
6	* modification, are permitted provided that the following conditions	6	* modification, are permitted provided that the following conditions
7	* are met:	7	* are met:
8	*	8	*
9	* - Redistributions of source code must retain the above copyright	9	* - Redistributions of source code must retain the above copyright
10	* notice, this list of conditions and the following disclaimer.	10	* notice, this list of conditions and the following disclaimer.
11	* - Redistributions in binary form must reproduce the above copyright	11	* - Redistributions in binary form must reproduce the above copyright
12	* notice, this list of conditions and the following disclaimer in the	12	* notice, this list of conditions and the following disclaimer in the
13	* documentation and/or other materials provided with the distribution.	13	* documentation and/or other materials provided with the distribution.
14	* - The name of the author may not be used to endorse or promote products	14	* - The name of the author may not be used to endorse or promote products
15	* derived from this software without specific prior written permission.	15	* derived from this software without specific prior written permission.
16	*	16	*
17	* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR	17	* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
18	* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES	18	* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
19	* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.	19	* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
20	* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,	20	* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
21	* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT	21	* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
22	* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,	22	* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
23	* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY	23	* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
24	* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT	24	* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
25	* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF	25	* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
26	* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.	26	* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
27	*/	27	*/
28		28
29	/** @addtogroup generic	29	/** @addtogroup generic
30	* @{	30	* @{
31	*/	31	*/
32		32
33	/**	33	/**
34	* @file	34	* @file
35	* @brief Syscall table and syscall wrappers.	35	* @brief Syscall table and syscall wrappers.
36	*/	36	*/
37		37
38	#include <syscall/syscall.h>	38	#include <syscall/syscall.h>
39	#include <proc/thread.h>	39	#include <proc/thread.h>
40	#include <proc/task.h>	40	#include <proc/task.h>
41	#include <proc/program.h>	41	#include <proc/program.h>
42	#include <mm/as.h>	42	#include <mm/as.h>
43	#include <print.h>	43	#include <print.h>
44	#include <arch.h>	44	#include <arch.h>
45	#include <debug.h>	45	#include <debug.h>
46	#include <ddi/device.h>	46	#include <ddi/device.h>
47	#include <ipc/sysipc.h>	47	#include <ipc/sysipc.h>
48	#include <synch/futex.h>	48	#include <synch/futex.h>
49	#include <synch/smc.h>	49	#include <synch/smc.h>
50	#include <ddi/ddi.h>	50	#include <ddi/ddi.h>
51	#include <ipc/event.h>	51	#include <ipc/event.h>
52	#include <security/cap.h>	52	#include <security/cap.h>
53	#include <sysinfo/sysinfo.h>	53	#include <sysinfo/sysinfo.h>
54	#include <console/console.h>	54	#include <console/console.h>
55	#include <udebug/udebug.h>	55	#include <udebug/udebug.h>
56		56
57	/** Dispatch system call */	57	/** Dispatch system call */
58	unative_t syscall_handler(unative_t a1, unative_t a2, unative_t a3,	58	unative_t syscall_handler(unative_t a1, unative_t a2, unative_t a3,
59	unative_t a4, unative_t a5, unative_t a6, unative_t id)	59	unative_t a4, unative_t a5, unative_t a6, unative_t id)
60	{	60	{
61	unative_t rc;	61	unative_t rc;
62		62
63	#ifdef CONFIG_UDEBUG	63	#ifdef CONFIG_UDEBUG
-		64	bool debug;
-		65
-		66	/*
-		67	* Early check for undebugged tasks. We do not lock anything as this
-		68	* test need not be precise in either way.
-		69	*/
-		70	debug = THREAD->udebug.active;
-		71
-		72	if (debug) {
64	THREAD->udebug.uspace_state = NULL;	73	THREAD->udebug.uspace_state = NULL;
65	udebug_syscall_event(a1, a2, a3, a4, a5, a6, id, 0, false);	74	udebug_syscall_event(a1, a2, a3, a4, a5, a6, id, 0, false);
-		75	}
66	#endif	76	#endif
67		77
68	if (id < SYSCALL_END) {	78	if (id < SYSCALL_END) {
69	rc = syscall_table[id](a1, a2, a3, a4, a5, a6);	79	rc = syscall_table[id](a1, a2, a3, a4, a5, a6);
70	} else {	80	} else {
71	printf("Task %" PRIu64": Unknown syscall %#" PRIxn, TASK->taskid, id);	81	printf("Task %" PRIu64": Unknown syscall %#" PRIxn, TASK->taskid, id);
72	task_kill(TASK->taskid);	82	task_kill(TASK->taskid);
73	thread_exit();	83	thread_exit();
74	}	84	}
75		85
76	if (THREAD->interrupted)	86	if (THREAD->interrupted)
77	thread_exit();	87	thread_exit();
78		88
79	#ifdef CONFIG_UDEBUG	89	#ifdef CONFIG_UDEBUG
-		90	if (debug) {
80	udebug_syscall_event(a1, a2, a3, a4, a5, a6, id, rc, true);	91	udebug_syscall_event(a1, a2, a3, a4, a5, a6, id, rc, true);
81		92
82	/*	93	/*
83	* Stopping point needed for tasks that only invoke non-blocking	94	* Stopping point needed for tasks that only invoke
84	* system calls.	95	* non-blocking system calls. Not needed if the task
-		96	* is not being debugged (it cannot block here).
85	*/	97	*/
86	udebug_stoppable_begin();	98	udebug_stoppable_begin();
87	udebug_stoppable_end();	99	udebug_stoppable_end();
-		100	}
88	#endif	101	#endif
89		102
90	return rc;	103	return rc;
91	}	104	}
92		105
93	syshandler_t syscall_table[SYSCALL_END] = {	106	syshandler_t syscall_table[SYSCALL_END] = {
94	(syshandler_t) sys_klog,	107	(syshandler_t) sys_klog,
95	(syshandler_t) sys_tls_set,	108	(syshandler_t) sys_tls_set,
96		109
97	/* Thread and task related syscalls. */	110	/* Thread and task related syscalls. */
98	(syshandler_t) sys_thread_create,	111	(syshandler_t) sys_thread_create,
99	(syshandler_t) sys_thread_exit,	112	(syshandler_t) sys_thread_exit,
100	(syshandler_t) sys_thread_get_id,	113	(syshandler_t) sys_thread_get_id,
101		114
102	(syshandler_t) sys_task_get_id,	115	(syshandler_t) sys_task_get_id,
103	(syshandler_t) sys_task_set_name,	116	(syshandler_t) sys_task_set_name,
104	(syshandler_t) sys_program_spawn_loader,	117	(syshandler_t) sys_program_spawn_loader,
105		118
106	/* Synchronization related syscalls. */	119	/* Synchronization related syscalls. */
107	(syshandler_t) sys_futex_sleep_timeout,	120	(syshandler_t) sys_futex_sleep_timeout,
108	(syshandler_t) sys_futex_wakeup,	121	(syshandler_t) sys_futex_wakeup,
109	(syshandler_t) sys_smc_coherence,	122	(syshandler_t) sys_smc_coherence,
110		123
111	/* Address space related syscalls. */	124	/* Address space related syscalls. */
112	(syshandler_t) sys_as_area_create,	125	(syshandler_t) sys_as_area_create,
113	(syshandler_t) sys_as_area_resize,	126	(syshandler_t) sys_as_area_resize,
114	(syshandler_t) sys_as_area_change_flags,	127	(syshandler_t) sys_as_area_change_flags,
115	(syshandler_t) sys_as_area_destroy,	128	(syshandler_t) sys_as_area_destroy,
116		129
117	/* IPC related syscalls. */	130	/* IPC related syscalls. */
118	(syshandler_t) sys_ipc_call_sync_fast,	131	(syshandler_t) sys_ipc_call_sync_fast,
119	(syshandler_t) sys_ipc_call_sync_slow,	132	(syshandler_t) sys_ipc_call_sync_slow,
120	(syshandler_t) sys_ipc_call_async_fast,	133	(syshandler_t) sys_ipc_call_async_fast,
121	(syshandler_t) sys_ipc_call_async_slow,	134	(syshandler_t) sys_ipc_call_async_slow,
122	(syshandler_t) sys_ipc_answer_fast,	135	(syshandler_t) sys_ipc_answer_fast,
123	(syshandler_t) sys_ipc_answer_slow,	136	(syshandler_t) sys_ipc_answer_slow,
124	(syshandler_t) sys_ipc_forward_fast,	137	(syshandler_t) sys_ipc_forward_fast,
125	(syshandler_t) sys_ipc_forward_slow,	138	(syshandler_t) sys_ipc_forward_slow,
126	(syshandler_t) sys_ipc_wait_for_call,	139	(syshandler_t) sys_ipc_wait_for_call,
127	(syshandler_t) sys_ipc_hangup,	140	(syshandler_t) sys_ipc_hangup,
128	(syshandler_t) sys_ipc_register_irq,	141	(syshandler_t) sys_ipc_register_irq,
129	(syshandler_t) sys_ipc_unregister_irq,	142	(syshandler_t) sys_ipc_unregister_irq,
130		143
131	/* Event notification syscalls. */	144	/* Event notification syscalls. */
132	(syshandler_t) sys_event_subscribe,	145	(syshandler_t) sys_event_subscribe,
133		146
134	/* Capabilities related syscalls. */	147	/* Capabilities related syscalls. */
135	(syshandler_t) sys_cap_grant,	148	(syshandler_t) sys_cap_grant,
136	(syshandler_t) sys_cap_revoke,	149	(syshandler_t) sys_cap_revoke,
137		150
138	/* DDI related syscalls. */	151	/* DDI related syscalls. */
139	(syshandler_t) sys_device_assign_devno,	152	(syshandler_t) sys_device_assign_devno,
140	(syshandler_t) sys_physmem_map,	153	(syshandler_t) sys_physmem_map,
141	(syshandler_t) sys_iospace_enable,	154	(syshandler_t) sys_iospace_enable,
142	(syshandler_t) sys_preempt_control,	155	(syshandler_t) sys_preempt_control,
143		156
144	/* Sysinfo syscalls */	157	/* Sysinfo syscalls */
145	(syshandler_t) sys_sysinfo_valid,	158	(syshandler_t) sys_sysinfo_valid,
146	(syshandler_t) sys_sysinfo_value,	159	(syshandler_t) sys_sysinfo_value,
147		160
148	/* Debug calls */	161	/* Debug calls */
149	(syshandler_t) sys_debug_enable_console,	162	(syshandler_t) sys_debug_enable_console,
150	(syshandler_t) sys_debug_disable_console,	163	(syshandler_t) sys_debug_disable_console,
151		164
152	(syshandler_t) sys_ipc_connect_kbox	165	(syshandler_t) sys_ipc_connect_kbox
153	};	166	};
154		167
155	/** @}	168	/** @}
156	*/	169	*/
157		170

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(root)/branches/tracing/kernel/generic/src/syscall/syscall.c – Rev 4377 → 4692