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source: soft/giet_vm/giet_libs/stdio.c @ 560

Last change on this file since 560 was 558, checked in by alain, 10 years ago
Introducing new syscalls to handle MWMR compliant coprocessors.
Property svn:executable set to ``*
File size: 26.7 KB

Rev	Line
[521]	1	//////////////////////////////////////////////////////////////////////////////
[258]	2	// File : stdio.c
	3	// Date : 01/04/2010
	4	// Author : alain greiner & Joel Porquet
	5	// Copyright (c) UPMC-LIP6
[521]	6	//////////////////////////////////////////////////////////////////////////////
[258]	7
	8	#include <stdarg.h>
	9	#include <stdio.h>
[267]	10	#include <giet_config.h>
[258]	11
[521]	12	//////////////////////////////////////////////////////////////////////////////
	13	///////////////////// MIPS32 related system calls ///////////////////////
	14	//////////////////////////////////////////////////////////////////////////////
[390]	15
[438]	16	////////////////////////////////////////////
[431]	17	void giet_proc_xyp( unsigned int* cluster_x,
	18	unsigned int* cluster_y,
	19	unsigned int* lpid )
[390]	20	{
[438]	21	sys_call( SYSCALL_PROC_XYP,
[431]	22	(unsigned int)cluster_x,
	23	(unsigned int)cluster_y,
	24	(unsigned int)lpid,
	25	0 );
[390]	26	}
	27
[438]	28	////////////////////////////
	29	unsigned int giet_proctime()
[390]	30	{
[438]	31	return (unsigned int)sys_call( SYSCALL_PROC_TIME,
	32	0, 0, 0, 0 );
[390]	33	}
	34
[438]	35	////////////////////////
	36	unsigned int giet_rand()
[390]	37	{
[438]	38	unsigned int x = (unsigned int)sys_call( SYSCALL_PROC_TIME,
	39	0, 0, 0, 0);
[390]	40	if ((x & 0xF) > 7)
	41	{
	42	return (x*x & 0xFFFF);
	43	}
	44	else
	45	{
	46	return (xxx & 0xFFFF);
	47	}
	48	}
	49
[521]	50	//////////////////////////////////////////////////////////////////////////////
	51	///////////////////// Task context system calls /////////////////////////////
	52	//////////////////////////////////////////////////////////////////////////////
[438]	53
	54	////////////////////////////////
	55	unsigned int giet_proc_task_id()
	56	{
	57	return (unsigned int)sys_call( SYSCALL_LOCAL_TASK_ID,
	58	0, 0, 0, 0 );
	59	}
	60
	61	//////////////////////////////////
	62	unsigned int giet_global_task_id()
	63	{
	64	return (unsigned int)sys_call( SYSCALL_GLOBAL_TASK_ID,
	65	0, 0, 0, 0 );
	66	}
	67
	68	/////////////////////////////
	69	unsigned int giet_thread_id()
	70	{
	71	return (unsigned int)sys_call( SYSCALL_THREAD_ID,
	72	0, 0, 0, 0 );
	73	}
	74
	75
[521]	76	//////////////////////////////////////////////////////////////////////////////
	77	///////////////////// Coprocessors system calls ////////////////////////////
	78	//////////////////////////////////////////////////////////////////////////////
[295]	79
[521]	80	///////////////////////////////////////////////////
	81	void giet_coproc_alloc( unsigned int coproc_type,
[558]	82	unsigned int* coproc_info )
[521]	83	{
	84	if ( sys_call( SYSCALL_COPROC_ALLOC,
	85	coproc_type,
	86	(unsigned int)coproc_info,
[558]	87	0, 0 ) )
[521]	88	giet_exit("error in giet_coproc_alloc()");
	89	}
	90
[558]	91	/////////////////////////////////////////////////////////
	92	void giet_coproc_release( unsigned int coproc_reg_index )
[521]	93	{
	94	if ( sys_call( SYSCALL_COPROC_RELEASE,
[558]	95	coproc_reg_index,
[521]	96	0, 0, 0 ) )
	97	giet_exit("error in giet_coproc_release()");
	98	}
	99
	100	//////////////////////////////////////////////////////////////////
[558]	101	void giet_coproc_channel_init( unsigned int channel,
[521]	102	giet_coproc_channel_t* desc )
	103	{
	104	if ( sys_call( SYSCALL_COPROC_CHANNEL_INIT,
	105	channel,
	106	(unsigned int)desc,
	107	0, 0 ) )
[558]	108	giet_exit("error in giet_coproc_channel_init()");
[521]	109	}
	110
[558]	111	/////////////////////////////////////////////////////
	112	void giet_coproc_run( unsigned int coproc_reg_index )
[521]	113	{
[558]	114	if ( sys_call( SYSCALL_COPROC_RUN,
	115	coproc_reg_index,
	116	0, 0, 0 ) )
	117	giet_exit("error in giet_coproc_run()");
[521]	118	}
	119
[558]	120	////////////////////////////
	121	void giet_coproc_completed()
[521]	122	{
	123	if ( sys_call( SYSCALL_COPROC_COMPLETED,
[558]	124	0, 0, 0, 0 ) )
[521]	125	giet_exit("error in giet_coproc_completed");
	126	}
	127
	128
	129	//////////////////////////////////////////////////////////////////////////////
	130	///////////////////// TTY device related system calls ///////////////////////
	131	//////////////////////////////////////////////////////////////////////////////
	132
[438]	133	/////////////////////
	134	void giet_tty_alloc()
[258]	135	{
[521]	136	if ( sys_call( SYSCALL_TTY_ALLOC,
	137	0, 0, 0, 0 ) ) giet_exit("error in giet_tty_alloc()");
[438]	138	}
[258]	139
[438]	140	////////////////////////////////////////////////////////////////////////
	141	static int __printf( char* format, unsigned int channel, va_list* args)
	142	{
	143	int ret; // return value from the syscall
	144
[295]	145	printf_text:
[258]	146
[295]	147	while (*format)
[258]	148	{
[295]	149	unsigned int i;
	150	for (i = 0 ; format[i] && (format[i] != '%') ; i++);
	151	if (i)
	152	{
	153	ret = sys_call(SYSCALL_TTY_WRITE,
	154	(unsigned int)format,
	155	i,
	156	channel,
[258]	157	0);
	158
[295]	159	if (ret != i) goto return_error;
	160
	161	format += i;
[258]	162	}
[295]	163	if (*format == '%')
[258]	164	{
[295]	165	format++;
	166	goto printf_arguments;
[258]	167	}
	168	}
	169
[345]	170	return 0;
[295]	171
	172	printf_arguments:
	173
[258]	174	{
[295]	175	char buf[20];
	176	char * pbuf;
	177	unsigned int len = 0;
	178	static const char HexaTab[] = "0123456789ABCDEF";
	179	unsigned int i;
[258]	180
[295]	181	switch (*format++)
[258]	182	{
[295]	183	case ('c'): /* char conversion */
[258]	184	{
[345]	185	int val = va_arg( *args, int );
[295]	186	len = 1;
	187	buf[0] = val;
	188	pbuf = &buf[0];
	189	break;
[258]	190	}
[295]	191	case ('d'): /* 32 bits decimal signed integer */
[258]	192	{
[345]	193	int val = va_arg( *args, int );
[295]	194	if (val < 0)
	195	{
	196	val = -val;
	197	ret = sys_call(SYSCALL_TTY_WRITE,
	198	(unsigned int)"-",
	199	1,
	200	channel,
	201	0);
	202	if (ret != 1) goto return_error;
	203	}
	204	for(i = 0; i < 10; i++)
	205	{
	206	buf[9 - i] = HexaTab[val % 10];
	207	if (!(val /= 10)) break;
	208	}
	209	len = i + 1;
	210	pbuf = &buf[9 - i];
	211	break;
[258]	212	}
[295]	213	case ('u'): /* 32 bits decimal unsigned integer */
	214	{
[345]	215	unsigned int val = va_arg( *args, unsigned int );
[295]	216	for(i = 0; i < 10; i++)
	217	{
	218	buf[9 - i] = HexaTab[val % 10];
	219	if (!(val /= 10)) break;
	220	}
	221	len = i + 1;
	222	pbuf = &buf[9 - i];
	223	break;
	224	}
	225	case ('x'): /* 32 bits hexadecimal integer */
	226	{
[345]	227	unsigned int val = va_arg( *args, unsigned int );
[295]	228	ret = sys_call(SYSCALL_TTY_WRITE,
	229	(unsigned int)"0x",
	230	2,
	231	channel,
	232	0);
	233	if (ret != 2) goto return_error;
	234	for(i = 0; i < 8; i++)
	235	{
	236	buf[7 - i] = HexaTab[val % 16];
	237	if (!(val /= 16)) break;
	238	}
	239	len = i + 1;
	240	pbuf = &buf[7 - i];
	241	break;
	242	}
	243	case ('l'): /* 64 bits hexadecimal unsigned */
	244	{
[345]	245	unsigned long long val = va_arg( *args, unsigned long long );
[295]	246	ret = sys_call(SYSCALL_TTY_WRITE,
	247	(unsigned int)"0x",
	248	2,
	249	channel,
	250	0);
	251	if (ret != 2) goto return_error;
	252	for(i = 0; i < 16; i++)
	253	{
	254	buf[15 - i] = HexaTab[val % 16];
	255	if (!(val /= 16)) break;
	256	}
	257	len = i + 1;
	258	pbuf = &buf[15 - i];
	259	break;
	260	}
	261	case ('s'): /* string */
	262	{
[345]	263	char* str = va_arg( args, char );
[295]	264	while (str[len])
	265	{
	266	len++;
	267	}
	268	pbuf = str;
	269	break;
	270	}
	271	default:
	272	goto return_error;
[258]	273	}
	274
[295]	275	ret = sys_call(SYSCALL_TTY_WRITE,
	276	(unsigned int)pbuf,
	277	len,
	278	channel,
	279	0);
	280	if (ret != len) goto return_error;
	281
	282	goto printf_text;
[258]	283	}
	284
[295]	285	return_error:
[345]	286	return 1;
	287	} // end __printf()
[295]	288
[345]	289
	290	////////////////////////////////////////
	291	void giet_tty_printf( char* format, ...)
	292	{
	293	va_list args;
	294
	295	va_start( args, format );
	296	int ret = __printf(format, 0xFFFFFFFF, &args);
[295]	297	va_end( args );
[345]	298
	299	if (ret)
	300	{
[382]	301	giet_exit("ERROR in giet_tty_printf()");
[345]	302	}
[295]	303	} // end giet_tty_printf()
	304
	305	////////////////////////////////////////
	306	void giet_shr_printf( char* format, ...)
[258]	307	{
[295]	308	va_list args;
[345]	309	volatile unsigned int sr_save;
[258]	310
[295]	311	sys_call( SYSCALL_TTY_GET_LOCK,
[501]	312	0,
[295]	313	(unsigned int)&sr_save,
	314	0, 0 );
	315
[345]	316	va_start( args, format );
[501]	317	int ret = __printf(format, 0, &args);
[345]	318	va_end( args );
[258]	319
[295]	320	sys_call( SYSCALL_TTY_RELEASE_LOCK,
[501]	321	0,
[295]	322	(unsigned int)&sr_save,
	323	0, 0 );
[267]	324
[345]	325	if (ret)
[258]	326	{
[345]	327	giet_exit("error in giet_shr_printf()");
[258]	328	}
[345]	329	} // end giet_shr_printf()
[267]	330
[295]	331	/////////////////////////////////
	332	void giet_tty_getc( char * byte )
	333	{
	334	int ret;
	335
	336	do
[267]	337	{
[295]	338	ret = sys_call(SYSCALL_TTY_READ,
	339	(unsigned int)byte, // buffer address
	340	1, // number of characters
	341	0xFFFFFFFF, // channel index from task context
	342	0);
	343	if ( ret < 0 ) giet_exit("error in giet_tty_getc()");
[267]	344	}
[295]	345	while (ret != 1);
	346	}
[267]	347
[295]	348	/////////////////////////////////////
	349	void giet_tty_gets( char* buf,
	350	unsigned int bufsize )
	351	{
	352	int ret;
	353	unsigned char byte;
	354	unsigned int index = 0;
	355
	356	while (index < (bufsize - 1))
	357	{
	358	do
	359	{
	360	ret = sys_call(SYSCALL_TTY_READ,
	361	(unsigned int)(&byte),
	362	1,
	363	0xFFFFFFFF,
	364	0);
	365	if ( ret < 0 ) giet_exit("error in giet_tty_gets()");
	366	}
	367	while (ret != 1);
	368
	369	if (byte == 0x0A) /* LF */
	370	{
	371	break;
	372	}
	373	else if ((byte == 0x7F) && (index > 0)) /* DEL */
	374	{
	375	index--;
	376	}
	377	else
	378	{
	379	buf[index] = byte;
	380	index++;
	381	}
	382	}
	383	buf[index] = 0;
[258]	384	}
	385
[295]	386	///////////////////////////////////////
	387	void giet_tty_getw( unsigned int* val )
	388	{
	389	unsigned char buf[32];
	390	unsigned int string_byte = 0x00000000; // string containing one single byte
	391	unsigned int string_cancel = 0x00082008; // string containing BS/SPACE/BS
	392	unsigned int save = 0;
	393	unsigned int dec = 0;
	394	unsigned int done = 0;
	395	unsigned int overflow = 0;
	396	unsigned int length = 0;
	397	unsigned int i;
	398	unsigned int channel = 0xFFFFFFFF;
	399	int ret; // return value from syscalls
	400
	401	// get characters
	402	while (done == 0)
	403	{
	404	// read one character
	405	do
	406	{
	407	ret = sys_call( SYSCALL_TTY_READ,
	408	(unsigned int)(&string_byte),
	409	1,
	410	channel,
	411	0);
	412	if ( ret < 0 ) giet_exit("error in giet_tty_getw()");
	413	}
	414	while (ret != 1);
[258]	415
[295]	416	// analyse character
	417	if ((string_byte > 0x2F) && (string_byte < 0x3A)) /* decimal character */
	418	{
	419	buf[length] = (unsigned char)string_byte;
	420	length++;
[258]	421
[295]	422	// echo
	423	ret = sys_call( SYSCALL_TTY_WRITE,
	424	(unsigned int)(&string_byte),
	425	1,
	426	channel,
	427	0 );
	428	if ( ret < 0 ) giet_exit("error in giet_tty_gets()");
	429	}
	430	else if (string_byte == 0x0A) /* LF character */
	431	{
	432	done = 1;
	433	}
	434	else if ( (string_byte == 0x7F) \|\| /* DEL character */
	435	(string_byte == 0x08) ) /* BS character */
	436	{
	437	if ( length > 0 )
	438	{
	439	length--; // cancel the character
	440
	441	ret = sys_call( SYSCALL_TTY_WRITE,
	442	(unsigned int)(&string_cancel),
	443	3,
	444	channel,
	445	0 );
[352]	446	if ( ret < 0 ) giet_exit("error in giet_tty_getw()");
[295]	447	}
	448	}
	449
	450	// test buffer overflow
	451	if ( length >= 32 )
	452	{
	453	overflow = 1;
	454	done = 1;
	455	}
	456	} // end while characters
	457
	458	// string to int conversion with overflow detection
	459	if ( overflow == 0 )
	460	{
	461	for (i = 0; (i < length) && (overflow == 0) ; i++)
	462	{
	463	dec = dec * 10 + (buf[i] - 0x30);
	464	if (dec < save) overflow = 1;
	465	save = dec;
	466	}
	467	}
	468
	469	// final evaluation
	470	if ( overflow == 0 )
	471	{
	472	// return value
	473	*val = dec;
	474	}
	475	else
	476	{
	477	// cancel all echo characters
	478	for (i = 0; i < length ; i++)
	479	{
	480	ret = sys_call( SYSCALL_TTY_WRITE,
	481	(unsigned int)(&string_cancel),
	482	3,
	483	channel,
	484	0 );
[352]	485	if ( ret < 0 ) giet_exit("error in giet_tty_getw()");
[295]	486	}
	487	// echo character '0'
	488	string_byte = 0x30;
	489	ret = sys_call( SYSCALL_TTY_WRITE,
	490	(unsigned int)(&string_byte),
	491	1,
	492	channel,
	493	0 );
[352]	494	if ( ret < 0 ) giet_exit("error in giet_tty_getw()");
[295]	495
	496	// return 0 value
	497	*val = 0;
	498	}
	499	}
	500
	501
[258]	502	//////////////////////////////////////////////////////////////////////////////////
	503	///////////////////// TIMER related system calls ////////////////////////////////
	504	//////////////////////////////////////////////////////////////////////////////////
	505
[295]	506	///////////////////////
[438]	507	void giet_timer_alloc()
[258]	508	{
[438]	509	if ( sys_call( SYSCALL_TIM_ALLOC,
	510	0, 0, 0, 0 ) ) giet_exit("error in giet_timer_alloc()");
[258]	511	}
[295]	512
[438]	513	////////////////////////////////////////////
	514	void giet_timer_start( unsigned int period )
	515	{
	516	if ( sys_call( SYSCALL_TIM_START,
	517	period,
	518	0, 0, 0 ) ) giet_exit("error in giet_timer_start()");
	519	}
	520
[295]	521	//////////////////////
	522	void giet_timer_stop()
[258]	523	{
[438]	524	if ( sys_call( SYSCALL_TIM_STOP,
	525	0, 0, 0, 0 ) ) giet_exit("error in giet_timer_stop()");
[258]	526	}
	527
	528
	529	//////////////////////////////////////////////////////////////////////////////////
	530	/////////////// Frame buffer device related system calls ///////////////////////
	531	//////////////////////////////////////////////////////////////////////////////////
	532
[438]	533	/////////////////////////
	534	void giet_fbf_cma_alloc()
[258]	535	{
[438]	536	if ( sys_call( SYSCALL_FBF_CMA_ALLOC,
	537	0, 0, 0, 0 ) ) giet_exit("error in giet_fbf_cma_alloc()");
[258]	538	}
[295]	539
	540	///////////////////////////////////////////
[438]	541	void giet_fbf_cma_start( void * buf0,
	542	void * buf1,
	543	unsigned int length )
[258]	544	{
[438]	545	if ( sys_call( SYSCALL_FBF_CMA_START,
[295]	546	(unsigned int)buf0,
	547	(unsigned int)buf1,
[438]	548	length,
	549	0 ) ) giet_exit("error in giet_fbf_cma_start()");
[258]	550	}
[295]	551
[438]	552	////////////////////////////////////////////////
	553	void giet_fbf_cma_display( unsigned int buffer )
[258]	554	{
[438]	555	if ( sys_call( SYSCALL_FBF_CMA_DISPLAY,
	556	buffer,
	557	0, 0, 0 ) ) giet_exit("error in giet_fbf_cma_display()");
[258]	558	}
[295]	559
	560	////////////////////////
[438]	561	void giet_fbf_cma_stop()
[258]	562	{
[438]	563	if ( sys_call( SYSCALL_FBF_CMA_STOP,
	564	0, 0, 0, 0 ) ) giet_exit("error in giet_fbf_cma_stop()");
[258]	565	}
	566
[438]	567	//////////////////////////////////////////////
	568	void giet_fbf_sync_write( unsigned int offset,
	569	void * buffer,
	570	unsigned int length )
	571	{
	572	if ( sys_call( SYSCALL_FBF_SYNC_WRITE,
	573	offset,
	574	(unsigned int)buffer,
	575	length,
	576	0 ) ) giet_exit("error in giet_fbf_sync_write()");
	577	}
[258]	578
[438]	579	/////////////////////////////////////////////
	580	void giet_fbf_sync_read( unsigned int offset,
	581	void * buffer,
	582	unsigned int length )
	583	{
	584	if ( sys_call( SYSCALL_FBF_SYNC_READ,
	585	offset,
	586	(unsigned int)buffer,
	587	length,
	588	0 ) ) giet_exit("error in giet_fbf_sync_read()");
	589	}
	590
	591
[258]	592	//////////////////////////////////////////////////////////////////////////////////
	593	/////////////////////// NIC related system calls /////////////////////////////////
	594	//////////////////////////////////////////////////////////////////////////////////
	595
[501]	596	////////////////////////////////////////////////////
	597	unsigned int giet_nic_rx_alloc( unsigned int xmax,
	598	unsigned int ymax )
[258]	599	{
[461]	600	int channel = sys_call( SYSCALL_NIC_ALLOC,
	601	1,
[501]	602	xmax,
	603	ymax,
	604	0 );
[487]	605	if ( channel < 0 ) giet_exit("error in giet_nic_rx_alloc()");
[461]	606
[487]	607	return (unsigned int)channel;
[258]	608	}
[295]	609
[501]	610	////////////////////////////////////////////////////
	611	unsigned int giet_nic_tx_alloc( unsigned int xmax,
	612	unsigned int ymax )
[258]	613	{
[461]	614	int channel = sys_call( SYSCALL_NIC_ALLOC,
[501]	615	0,
	616	xmax,
	617	ymax,
	618	0 );
[461]	619	if ( channel < 0 ) giet_exit("error in giet_nic_tx_alloc()");
	620
[487]	621	return (unsigned int)channel;
[450]	622	}
	623
[487]	624	//////////////////////////////////////////////
	625	void giet_nic_rx_start( unsigned int channel )
[450]	626	{
[461]	627	if ( sys_call( SYSCALL_NIC_START,
	628	1,
[487]	629	channel,
	630	0, 0 ) ) giet_exit("error in giet_nic_rx_start()");
[450]	631	}
	632
[487]	633	//////////////////////////////////////////////
	634	void giet_nic_tx_start( unsigned int channel )
[450]	635	{
[461]	636	if ( sys_call( SYSCALL_NIC_START,
	637	0,
[487]	638	channel,
	639	0, 0 ) ) giet_exit("error in giet_nic_tx_start()");
[450]	640	}
	641
[461]	642	///////////////////////////////////////////////////////////
	643	void giet_nic_rx_move( unsigned int channel, void* buffer )
[450]	644	{
[461]	645	if ( sys_call( SYSCALL_NIC_MOVE,
	646	1,
	647	channel,
[438]	648	(unsigned int)buffer,
[461]	649	0 ) ) giet_exit("error in giet_nic_rx_move()");
[258]	650	}
	651
[461]	652	///////////////////////////////////////////////////////////
	653	void giet_nic_tx_move( unsigned int channel, void* buffer )
[438]	654	{
[461]	655	if ( sys_call( SYSCALL_NIC_MOVE,
	656	0,
	657	channel,
[438]	658	(unsigned int)buffer,
[461]	659	0 ) ) giet_exit("error in giet_nic_tx_move()");
[438]	660	}
	661
[487]	662	/////////////////////////////////////////////
	663	void giet_nic_rx_stop( unsigned int channel )
[450]	664	{
[461]	665	if ( sys_call( SYSCALL_NIC_STOP,
	666	1,
[487]	667	channel,
	668	0, 0 ) ) giet_exit("error in giet_nic_rx_stop()");
[450]	669	}
	670
[487]	671	/////////////////////////////////////////////
	672	void giet_nic_tx_stop( unsigned int channel )
[450]	673	{
[461]	674	if ( sys_call( SYSCALL_NIC_STOP,
	675	0,
[487]	676	channel,
	677	0, 0 ) ) giet_exit("error in giet_nic_tx_stop()");
[450]	678	}
	679
[487]	680	//////////////////////////////////////////////
	681	void giet_nic_rx_stats( unsigned int channel )
[461]	682	{
	683	if ( sys_call( SYSCALL_NIC_STATS,
	684	1,
[487]	685	channel,
	686	0, 0 ) ) giet_exit("error in giet_nic_rx_stats()");
[461]	687	}
[450]	688
[487]	689	//////////////////////////////////////////////
	690	void giet_nic_tx_stats( unsigned int channel )
[461]	691	{
	692	if ( sys_call( SYSCALL_NIC_STATS,
	693	0,
[487]	694	channel,
	695	0, 0 ) ) giet_exit("error in giet_nic_tx_stats()");
[461]	696	}
	697
[487]	698	//////////////////////////////////////////////
	699	void giet_nic_rx_clear( unsigned int channel )
[461]	700	{
	701	if ( sys_call( SYSCALL_NIC_CLEAR,
	702	1,
[487]	703	channel,
	704	0, 0 ) ) giet_exit("error in giet_nic_rx_clear()");
[461]	705	}
	706
[487]	707	//////////////////////////////////////////////
	708	void giet_nic_tx_clear( unsigned int channel )
[461]	709	{
	710	if ( sys_call( SYSCALL_NIC_CLEAR,
	711	0,
[487]	712	channel,
	713	0, 0 ) ) giet_exit("error in giet_nic_tx_clear()");
[461]	714	}
	715
	716
	717
[295]	718	///////////////////////////////////////////////////////////////////////////////////
	719	///////////////////// FAT related system calls ////////////////////////////////////
	720	///////////////////////////////////////////////////////////////////////////////////
[258]	721
[295]	722	///////////////////////////////////////////
	723	int giet_fat_open( const char* pathname,
	724	unsigned int flags )
	725	{
[550]	726	int ret = sys_call( SYSCALL_FAT_OPEN,
	727	(unsigned int)pathname,
	728	flags,
	729	0, 0 );
	730	if ( ret < 0 ) giet_exit("error in giet_fat_open()");
	731	return ret;
[295]	732	}
[258]	733
[295]	734	////////////////////////////////////
	735	void giet_fat_read( unsigned int fd,
	736	void* buffer,
	737	unsigned int count,
	738	unsigned int offset )
	739	{
	740	if ( sys_call( SYSCALL_FAT_READ,
	741	fd,
	742	(unsigned int)buffer,
	743	count,
[390]	744	offset ) != count ) giet_exit("ERROR in giet_fat_read()");
[295]	745	}
	746
	747	/////////////////////////////////////
	748	void giet_fat_write( unsigned int fd,
	749	void* buffer,
	750	unsigned int count,
	751	unsigned int offset )
	752	{
	753	if ( sys_call( SYSCALL_FAT_WRITE,
	754	fd,
	755	(unsigned int)buffer,
	756	count,
[390]	757	offset ) != count ) giet_exit("ERROR in giet_fat_write()");
[295]	758	}
	759
	760	/* variant implementing the UNIX spec
[258]	761	///////////////////////////////////////////////////////////////////////////////////
[295]	762	// This system call writes to a file identified by the "fd" file descriptor.
	763	// - "buffer" is the source buffer virtual address (must be word aligned).
	764	// - "count" is a number of bytes (must be multiple of 4).
	765	// It uses the implicit "lseek" pointer in file descriptor.
[258]	766	///////////////////////////////////////////////////////////////////////////////////
[295]	767	void giet_fat_write( unsigned int fd,
	768	void* buffer,
	769	unsigned int count ) // number of bytes
[258]	770	{
[295]	771	return sys_call( SYSCALL_FAT_WRITE,
	772	fd,
	773	(unsigned int)buffer,
	774	count, 0 );
[258]	775	}
[295]	776	*/
	777
	778	/////////////////////////////////////
	779	void giet_fat_lseek( unsigned int fd,
	780	unsigned int offset,
	781	unsigned int whence )
[258]	782	{
[295]	783	if ( sys_call( SYSCALL_FAT_LSEEK,
	784	fd,
	785	offset,
	786	whence,
[390]	787	0 ) ) giet_exit("ERROR in giet_fat_lseek()");
[258]	788	}
[295]	789
	790	//////////////////////////////////////
	791	void giet_fat_fstat( unsigned int fd )
[258]	792	{
[295]	793	if ( sys_call( SYSCALL_FAT_FSTAT,
	794	fd,
[390]	795	0, 0, 0 ) ) giet_exit("ERROR in giet_fat_lseek()");
[258]	796	}
[295]	797
	798	/////////////////////////////////////
	799	void giet_fat_close( unsigned int fd )
[258]	800	{
[295]	801	if ( sys_call( SYSCALL_FAT_CLOSE,
	802	fd,
[390]	803	0, 0, 0 ) ) giet_exit("ERROR in giet_fat_close()");
[258]	804	}
[295]	805
	806
	807
	808
[390]	809	//////////////////////////////////////////////////////////////////////////////////
	810	///////////////////// Miscellaneous system calls /////////////////////////////////
	811	//////////////////////////////////////////////////////////////////////////////////
	812
[295]	813	//////////////////////////////
	814	void giet_exit( char* string )
[258]	815	{
[295]	816	sys_call( SYSCALL_EXIT,
	817	(unsigned int)string,
	818	0, 0, 0 );
[258]	819	}
[295]	820
	821	/////////////////////////////////////////
	822	void giet_assert( unsigned int condition,
	823	char* string )
[258]	824	{
[295]	825	if ( condition == 0 ) giet_exit( string );
[258]	826	}
[295]	827
[390]	828	//////////////////////////
	829	void giet_context_switch()
	830	{
	831	sys_call( SYSCALL_CTX_SWITCH,
	832	0, 0, 0, 0 );
	833	}
	834
[501]	835	/////////////////////////////////////////////////
	836	void giet_procs_number( unsigned int* x_size,
	837	unsigned int* y_size,
	838	unsigned int* nprocs )
[438]	839	{
[501]	840	if ( sys_call( SYSCALL_PROCS_NUMBER,
	841	(unsigned int)x_size,
	842	(unsigned int)y_size,
	843	(unsigned int)nprocs,
	844	0 ) ) giet_exit("ERROR in giet_procs_number()");
[438]	845	}
	846
[295]	847	////////////////////////////////////////////////////
	848	void giet_vobj_get_vbase( char* vspace_name,
	849	char* vobj_name,
[438]	850	unsigned int* vbase )
[258]	851	{
[295]	852	if ( sys_call( SYSCALL_VOBJ_GET_VBASE,
	853	(unsigned int) vspace_name,
	854	(unsigned int) vobj_name,
[438]	855	(unsigned int) vbase,
[390]	856	0 ) ) giet_exit("ERROR in giet_vobj_get_vbase()");
[258]	857	}
[260]	858
[438]	859	////////////////////////////////////////////////////
	860	void giet_vobj_get_length( char* vspace_name,
	861	char* vobj_name,
	862	unsigned int* length )
[260]	863	{
[438]	864	if ( sys_call( SYSCALL_VOBJ_GET_LENGTH,
	865	(unsigned int) vspace_name,
	866	(unsigned int) vobj_name,
	867	(unsigned int) length,
	868	0 ) ) giet_exit("ERROR in giet_vobj_get_length()");
[260]	869	}
	870
[295]	871	/////////////////////////////////////////
	872	void giet_heap_info( unsigned int* vaddr,
[368]	873	unsigned int* length,
	874	unsigned int x,
	875	unsigned int y )
[258]	876	{
[295]	877	if ( sys_call( SYSCALL_HEAP_INFO,
	878	(unsigned int)vaddr,
	879	(unsigned int)length,
[368]	880	x,
[390]	881	y ) ) giet_exit("ERROR in giet_heap_info()");
[258]	882	}
	883
[390]	884	/////////////////////////////////////////
	885	void giet_get_xy( void* ptr,
	886	unsigned int* px,
	887	unsigned int* py )
	888	{
	889	if ( sys_call( SYSCALL_GET_XY,
	890	(unsigned int)ptr,
	891	(unsigned int)px,
	892	(unsigned int)py,
	893	0 ) ) giet_exit("ERROR in giet_get_xy()");
	894	}
	895
[258]	896	// Local Variables:
	897	// tab-width: 4
	898	// c-basic-offset: 4
	899	// c-file-offsets:((innamespace . 0)(inline-open . 0))
	900	// indent-tabs-mode: nil
	901	// End:
	902	// vim: filetype=c:expandtab:shiftwidth=4:tabstop=4:softtabstop=4
	903

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