WebSVN – HelenOS – Diff – /branches/dynload/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>
 
/** Print a hex integer into klog */
static unative_t sys_debug_putint(unative_t i)
{
    printf("[task:0x%x]", i);
    return 0;
}
 
/** 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) {
        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_putint,
    (syshandler_t) sys_debug_enable_console,
    (syshandler_t) sys_debug_disable_console,
   
    (syshandler_t) sys_ipc_connect_kbox
};
 
/** @}
 */
 

Rev 4348	Rev 4389
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	/** Print a hex integer into klog */	57	/** Print a hex integer into klog */
58	static unative_t sys_debug_putint(unative_t i)	58	static unative_t sys_debug_putint(unative_t i)
59	{	59	{
60	printf("[task:0x%x]", i);	60	printf("[task:0x%x]", i);
61	return 0;	61	return 0;
62	}	62	}
63		63
64	/** Dispatch system call */	64	/** Dispatch system call */
65	unative_t syscall_handler(unative_t a1, unative_t a2, unative_t a3,	65	unative_t syscall_handler(unative_t a1, unative_t a2, unative_t a3,
66	unative_t a4, unative_t a5, unative_t a6, unative_t id)	66	unative_t a4, unative_t a5, unative_t a6, unative_t id)
67	{	67	{
68	unative_t rc;	68	unative_t rc;
69		69
70	#ifdef CONFIG_UDEBUG	70	#ifdef CONFIG_UDEBUG
-		71	bool debug;
-		72
-		73	/*
-		74	* Early check for undebugged tasks. We do not lock anything as this
-		75	* test need not be precise in either way.
-		76	*/
-		77	debug = THREAD->udebug.active;
-		78
-		79	if (debug) {
71	udebug_syscall_event(a1, a2, a3, a4, a5, a6, id, 0, false);	80	udebug_syscall_event(a1, a2, a3, a4, a5, a6, id, 0, false);
-		81	}
72	#endif	82	#endif
73		83
74	if (id < SYSCALL_END) {	84	if (id < SYSCALL_END) {
75	rc = syscall_table[id](a1, a2, a3, a4, a5, a6);	85	rc = syscall_table[id](a1, a2, a3, a4, a5, a6);
76	} else {	86	} else {
77	printf("Task %" PRIu64": Unknown syscall %#" PRIxn, TASK->taskid, id);	87	printf("Task %" PRIu64": Unknown syscall %#" PRIxn, TASK->taskid, id);
78	task_kill(TASK->taskid);	88	task_kill(TASK->taskid);
79	thread_exit();	89	thread_exit();
80	}	90	}
81		91
82	if (THREAD->interrupted)	92	if (THREAD->interrupted)
83	thread_exit();	93	thread_exit();
84		94
85	#ifdef CONFIG_UDEBUG	95	#ifdef CONFIG_UDEBUG
-		96	if (debug) {
86	udebug_syscall_event(a1, a2, a3, a4, a5, a6, id, rc, true);	97	udebug_syscall_event(a1, a2, a3, a4, a5, a6, id, rc, true);
87		98
88	/*	99	/*
89	* Stopping point needed for tasks that only invoke non-blocking	100	* Stopping point needed for tasks that only invoke
90	* system calls.	101	* non-blocking system calls. Not needed if the task
-		102	* is not being debugged (it cannot block here).
91	*/	103	*/
92	udebug_stoppable_begin();	104	udebug_stoppable_begin();
93	udebug_stoppable_end();	105	udebug_stoppable_end();
-		106	}
94	#endif	107	#endif
95		108
96	return rc;	109	return rc;
97	}	110	}
98		111
99	syshandler_t syscall_table[SYSCALL_END] = {	112	syshandler_t syscall_table[SYSCALL_END] = {
100	(syshandler_t) sys_klog,	113	(syshandler_t) sys_klog,
101	(syshandler_t) sys_tls_set,	114	(syshandler_t) sys_tls_set,
102		115
103	/* Thread and task related syscalls. */	116	/* Thread and task related syscalls. */
104	(syshandler_t) sys_thread_create,	117	(syshandler_t) sys_thread_create,
105	(syshandler_t) sys_thread_exit,	118	(syshandler_t) sys_thread_exit,
106	(syshandler_t) sys_thread_get_id,	119	(syshandler_t) sys_thread_get_id,
107		120
108	(syshandler_t) sys_task_get_id,	121	(syshandler_t) sys_task_get_id,
109	(syshandler_t) sys_task_set_name,	122	(syshandler_t) sys_task_set_name,
110	(syshandler_t) sys_program_spawn_loader,	123	(syshandler_t) sys_program_spawn_loader,
111		124
112	/* Synchronization related syscalls. */	125	/* Synchronization related syscalls. */
113	(syshandler_t) sys_futex_sleep_timeout,	126	(syshandler_t) sys_futex_sleep_timeout,
114	(syshandler_t) sys_futex_wakeup,	127	(syshandler_t) sys_futex_wakeup,
115	(syshandler_t) sys_smc_coherence,	128	(syshandler_t) sys_smc_coherence,
116		129
117	/* Address space related syscalls. */	130	/* Address space related syscalls. */
118	(syshandler_t) sys_as_area_create,	131	(syshandler_t) sys_as_area_create,
119	(syshandler_t) sys_as_area_resize,	132	(syshandler_t) sys_as_area_resize,
120	(syshandler_t) sys_as_area_change_flags,	133	(syshandler_t) sys_as_area_change_flags,
121	(syshandler_t) sys_as_area_destroy,	134	(syshandler_t) sys_as_area_destroy,
122		135
123	/* IPC related syscalls. */	136	/* IPC related syscalls. */
124	(syshandler_t) sys_ipc_call_sync_fast,	137	(syshandler_t) sys_ipc_call_sync_fast,
125	(syshandler_t) sys_ipc_call_sync_slow,	138	(syshandler_t) sys_ipc_call_sync_slow,
126	(syshandler_t) sys_ipc_call_async_fast,	139	(syshandler_t) sys_ipc_call_async_fast,
127	(syshandler_t) sys_ipc_call_async_slow,	140	(syshandler_t) sys_ipc_call_async_slow,
128	(syshandler_t) sys_ipc_answer_fast,	141	(syshandler_t) sys_ipc_answer_fast,
129	(syshandler_t) sys_ipc_answer_slow,	142	(syshandler_t) sys_ipc_answer_slow,
130	(syshandler_t) sys_ipc_forward_fast,	143	(syshandler_t) sys_ipc_forward_fast,
131	(syshandler_t) sys_ipc_forward_slow,	144	(syshandler_t) sys_ipc_forward_slow,
132	(syshandler_t) sys_ipc_wait_for_call,	145	(syshandler_t) sys_ipc_wait_for_call,
133	(syshandler_t) sys_ipc_hangup,	146	(syshandler_t) sys_ipc_hangup,
134	(syshandler_t) sys_ipc_register_irq,	147	(syshandler_t) sys_ipc_register_irq,
135	(syshandler_t) sys_ipc_unregister_irq,	148	(syshandler_t) sys_ipc_unregister_irq,
136		149
137	/* Event notification syscalls. */	150	/* Event notification syscalls. */
138	(syshandler_t) sys_event_subscribe,	151	(syshandler_t) sys_event_subscribe,
139		152
140	/* Capabilities related syscalls. */	153	/* Capabilities related syscalls. */
141	(syshandler_t) sys_cap_grant,	154	(syshandler_t) sys_cap_grant,
142	(syshandler_t) sys_cap_revoke,	155	(syshandler_t) sys_cap_revoke,
143		156
144	/* DDI related syscalls. */	157	/* DDI related syscalls. */
145	(syshandler_t) sys_device_assign_devno,	158	(syshandler_t) sys_device_assign_devno,
146	(syshandler_t) sys_physmem_map,	159	(syshandler_t) sys_physmem_map,
147	(syshandler_t) sys_iospace_enable,	160	(syshandler_t) sys_iospace_enable,
148	(syshandler_t) sys_preempt_control,	161	(syshandler_t) sys_preempt_control,
149		162
150	/* Sysinfo syscalls */	163	/* Sysinfo syscalls */
151	(syshandler_t) sys_sysinfo_valid,	164	(syshandler_t) sys_sysinfo_valid,
152	(syshandler_t) sys_sysinfo_value,	165	(syshandler_t) sys_sysinfo_value,
153		166
154	/* Debug calls */	167	/* Debug calls */
155	(syshandler_t) sys_debug_putint,	168	(syshandler_t) sys_debug_putint,
156	(syshandler_t) sys_debug_enable_console,	169	(syshandler_t) sys_debug_enable_console,
157	(syshandler_t) sys_debug_disable_console,	170	(syshandler_t) sys_debug_disable_console,
158		171
159	(syshandler_t) sys_ipc_connect_kbox	172	(syshandler_t) sys_ipc_connect_kbox
160	};	173	};
161		174
162	/** @}	175	/** @}
163	*/	176	*/
164		177

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(root)/branches/dynload/kernel/generic/src/syscall/syscall.c @ 3674 – Rev 4348 → 4389