Context Navigation

source: soft/giet_vm/giet_libs/stdio.c @ 437

Last change on this file since 437 was 431, checked in by alain, 10 years ago
Introducing fixed format (X_WIDTH / Y_WIDTH / P_WIDTH) for processor index.
Property svn:executable set to ``*
File size: 20.4 KB

Rev	Line
[258]	1	//////////////////////////////////////////////////////////////////////////////////
	2	// File : stdio.c
	3	// Date : 01/04/2010
	4	// Author : alain greiner & Joel Porquet
	5	// Copyright (c) UPMC-LIP6
	6	///////////////////////////////////////////////////////////////////////////////////
	7
	8	#include <stdarg.h>
	9	#include <stdio.h>
[267]	10	#include <giet_config.h>
[258]	11
	12	////////////////////////////////////////////////////////////////////////////////////
[390]	13	///////////////////// MIPS32 related system calls /////////////////////////////
	14	////////////////////////////////////////////////////////////////////////////////////
	15
	16	/////////////////
[431]	17	void giet_proc_xyp( unsigned int* cluster_x,
	18	unsigned int* cluster_y,
	19	unsigned int* lpid )
[390]	20	{
[431]	21	sys_call( SYSCALL_PROCID,
	22	(unsigned int)cluster_x,
	23	(unsigned int)cluster_y,
	24	(unsigned int)lpid,
	25	0 );
[390]	26	}
	27
	28	////////////////////
	29	int giet_proctime()
	30	{
	31	return sys_call( SYSCALL_PROCTIME,
	32	0, 0, 0, 0 );
	33	}
	34
	35	///////////////
	36	int giet_rand()
	37	{
	38	unsigned int x = sys_call(SYSCALL_PROCTIME,
	39	0, 0, 0, 0);
	40	if ((x & 0xF) > 7)
	41	{
	42	return (x*x & 0xFFFF);
	43	}
	44	else
	45	{
	46	return (xxx & 0xFFFF);
	47	}
	48	}
	49
	50	////////////////////////////////////////////////////////////////////////////////////
[295]	51	///////////////////// TTY device related system calls /////////////////////////////
[258]	52	////////////////////////////////////////////////////////////////////////////////////
[295]	53
[352]	54	///////////////////////////////////////////////////////////////////////
[345]	55	static int __printf( char* format, unsigned int channel, va_list* args)
[258]	56	{
[345]	57	int ret; // return value from the syscalls
[258]	58
[295]	59	printf_text:
[258]	60
[295]	61	while (*format)
[258]	62	{
[295]	63	unsigned int i;
	64	for (i = 0 ; format[i] && (format[i] != '%') ; i++);
	65	if (i)
	66	{
	67	ret = sys_call(SYSCALL_TTY_WRITE,
	68	(unsigned int)format,
	69	i,
	70	channel,
[258]	71	0);
	72
[295]	73	if (ret != i) goto return_error;
	74
	75	format += i;
[258]	76	}
[295]	77	if (*format == '%')
[258]	78	{
[295]	79	format++;
	80	goto printf_arguments;
[258]	81	}
	82	}
	83
[345]	84	return 0;
[295]	85
	86	printf_arguments:
	87
[258]	88	{
[295]	89	char buf[20];
	90	char * pbuf;
	91	unsigned int len = 0;
	92	static const char HexaTab[] = "0123456789ABCDEF";
	93	unsigned int i;
[258]	94
[295]	95	switch (*format++)
[258]	96	{
[295]	97	case ('c'): /* char conversion */
[258]	98	{
[345]	99	int val = va_arg( *args, int );
[295]	100	len = 1;
	101	buf[0] = val;
	102	pbuf = &buf[0];
	103	break;
[258]	104	}
[295]	105	case ('d'): /* 32 bits decimal signed integer */
[258]	106	{
[345]	107	int val = va_arg( *args, int );
[295]	108	if (val < 0)
	109	{
	110	val = -val;
	111	ret = sys_call(SYSCALL_TTY_WRITE,
	112	(unsigned int)"-",
	113	1,
	114	channel,
	115	0);
	116	if (ret != 1) goto return_error;
	117	}
	118	for(i = 0; i < 10; i++)
	119	{
	120	buf[9 - i] = HexaTab[val % 10];
	121	if (!(val /= 10)) break;
	122	}
	123	len = i + 1;
	124	pbuf = &buf[9 - i];
	125	break;
[258]	126	}
[295]	127	case ('u'): /* 32 bits decimal unsigned integer */
	128	{
[345]	129	unsigned int val = va_arg( *args, unsigned int );
[295]	130	for(i = 0; i < 10; i++)
	131	{
	132	buf[9 - i] = HexaTab[val % 10];
	133	if (!(val /= 10)) break;
	134	}
	135	len = i + 1;
	136	pbuf = &buf[9 - i];
	137	break;
	138	}
	139	case ('x'): /* 32 bits hexadecimal integer */
	140	{
[345]	141	unsigned int val = va_arg( *args, unsigned int );
[295]	142	ret = sys_call(SYSCALL_TTY_WRITE,
	143	(unsigned int)"0x",
	144	2,
	145	channel,
	146	0);
	147	if (ret != 2) goto return_error;
	148	for(i = 0; i < 8; i++)
	149	{
	150	buf[7 - i] = HexaTab[val % 16];
	151	if (!(val /= 16)) break;
	152	}
	153	len = i + 1;
	154	pbuf = &buf[7 - i];
	155	break;
	156	}
	157	case ('l'): /* 64 bits hexadecimal unsigned */
	158	{
[345]	159	unsigned long long val = va_arg( *args, unsigned long long );
[295]	160	ret = sys_call(SYSCALL_TTY_WRITE,
	161	(unsigned int)"0x",
	162	2,
	163	channel,
	164	0);
	165	if (ret != 2) goto return_error;
	166	for(i = 0; i < 16; i++)
	167	{
	168	buf[15 - i] = HexaTab[val % 16];
	169	if (!(val /= 16)) break;
	170	}
	171	len = i + 1;
	172	pbuf = &buf[15 - i];
	173	break;
	174	}
	175	case ('s'): /* string */
	176	{
[345]	177	char* str = va_arg( args, char );
[295]	178	while (str[len])
	179	{
	180	len++;
	181	}
	182	pbuf = str;
	183	break;
	184	}
	185	default:
	186	goto return_error;
[258]	187	}
	188
[295]	189	ret = sys_call(SYSCALL_TTY_WRITE,
	190	(unsigned int)pbuf,
	191	len,
	192	channel,
	193	0);
	194	if (ret != len) goto return_error;
	195
	196	goto printf_text;
[258]	197	}
	198
[295]	199	return_error:
[345]	200	return 1;
	201	} // end __printf()
[295]	202
[345]	203
	204	////////////////////////////////////////
	205	void giet_tty_printf( char* format, ...)
	206	{
	207	va_list args;
	208
	209	va_start( args, format );
	210	int ret = __printf(format, 0xFFFFFFFF, &args);
[295]	211	va_end( args );
[345]	212
	213	if (ret)
	214	{
[382]	215	giet_exit("ERROR in giet_tty_printf()");
[345]	216	}
[295]	217	} // end giet_tty_printf()
	218
	219	////////////////////////////////////////
	220	void giet_shr_printf( char* format, ...)
[258]	221	{
[295]	222	va_list args;
[345]	223	const int channel = 0;
	224	volatile unsigned int sr_save;
[258]	225
[295]	226	sys_call( SYSCALL_TTY_GET_LOCK,
	227	channel,
	228	(unsigned int)&sr_save,
	229	0, 0 );
	230
[345]	231	va_start( args, format );
	232	int ret = __printf(format, channel, &args);
	233	va_end( args );
[258]	234
[295]	235	sys_call( SYSCALL_TTY_RELEASE_LOCK,
	236	channel,
	237	(unsigned int)&sr_save,
	238	0, 0 );
[267]	239
[345]	240	if (ret)
[258]	241	{
[345]	242	giet_exit("error in giet_shr_printf()");
[258]	243	}
[345]	244	} // end giet_shr_printf()
[267]	245
[295]	246	/////////////////////////////////
	247	void giet_tty_getc( char * byte )
	248	{
	249	int ret;
	250
	251	do
[267]	252	{
[295]	253	ret = sys_call(SYSCALL_TTY_READ,
	254	(unsigned int)byte, // buffer address
	255	1, // number of characters
	256	0xFFFFFFFF, // channel index from task context
	257	0);
	258	if ( ret < 0 ) giet_exit("error in giet_tty_getc()");
[267]	259	}
[295]	260	while (ret != 1);
	261	}
[267]	262
[295]	263	/////////////////////////////////////
	264	void giet_tty_gets( char* buf,
	265	unsigned int bufsize )
	266	{
	267	int ret;
	268	unsigned char byte;
	269	unsigned int index = 0;
	270
	271	while (index < (bufsize - 1))
	272	{
	273	do
	274	{
	275	ret = sys_call(SYSCALL_TTY_READ,
	276	(unsigned int)(&byte),
	277	1,
	278	0xFFFFFFFF,
	279	0);
	280	if ( ret < 0 ) giet_exit("error in giet_tty_gets()");
	281	}
	282	while (ret != 1);
	283
	284	if (byte == 0x0A) /* LF */
	285	{
	286	break;
	287	}
	288	else if ((byte == 0x7F) && (index > 0)) /* DEL */
	289	{
	290	index--;
	291	}
	292	else
	293	{
	294	buf[index] = byte;
	295	index++;
	296	}
	297	}
	298	buf[index] = 0;
[258]	299	}
	300
[295]	301	///////////////////////////////////////
	302	void giet_tty_getw( unsigned int* val )
	303	{
	304	unsigned char buf[32];
	305	unsigned int string_byte = 0x00000000; // string containing one single byte
	306	unsigned int string_cancel = 0x00082008; // string containing BS/SPACE/BS
	307	unsigned int save = 0;
	308	unsigned int dec = 0;
	309	unsigned int done = 0;
	310	unsigned int overflow = 0;
	311	unsigned int length = 0;
	312	unsigned int i;
	313	unsigned int channel = 0xFFFFFFFF;
	314	int ret; // return value from syscalls
	315
	316	// get characters
	317	while (done == 0)
	318	{
	319	// read one character
	320	do
	321	{
	322	ret = sys_call( SYSCALL_TTY_READ,
	323	(unsigned int)(&string_byte),
	324	1,
	325	channel,
	326	0);
	327	if ( ret < 0 ) giet_exit("error in giet_tty_getw()");
	328	}
	329	while (ret != 1);
[258]	330
[295]	331	// analyse character
	332	if ((string_byte > 0x2F) && (string_byte < 0x3A)) /* decimal character */
	333	{
	334	buf[length] = (unsigned char)string_byte;
	335	length++;
[258]	336
[295]	337	// echo
	338	ret = sys_call( SYSCALL_TTY_WRITE,
	339	(unsigned int)(&string_byte),
	340	1,
	341	channel,
	342	0 );
	343	if ( ret < 0 ) giet_exit("error in giet_tty_gets()");
	344	}
	345	else if (string_byte == 0x0A) /* LF character */
	346	{
	347	done = 1;
	348	}
	349	else if ( (string_byte == 0x7F) \|\| /* DEL character */
	350	(string_byte == 0x08) ) /* BS character */
	351	{
	352	if ( length > 0 )
	353	{
	354	length--; // cancel the character
	355
	356	ret = sys_call( SYSCALL_TTY_WRITE,
	357	(unsigned int)(&string_cancel),
	358	3,
	359	channel,
	360	0 );
[352]	361	if ( ret < 0 ) giet_exit("error in giet_tty_getw()");
[295]	362	}
	363	}
	364
	365	// test buffer overflow
	366	if ( length >= 32 )
	367	{
	368	overflow = 1;
	369	done = 1;
	370	}
	371	} // end while characters
	372
	373	// string to int conversion with overflow detection
	374	if ( overflow == 0 )
	375	{
	376	for (i = 0; (i < length) && (overflow == 0) ; i++)
	377	{
	378	dec = dec * 10 + (buf[i] - 0x30);
	379	if (dec < save) overflow = 1;
	380	save = dec;
	381	}
	382	}
	383
	384	// final evaluation
	385	if ( overflow == 0 )
	386	{
	387	// return value
	388	*val = dec;
	389	}
	390	else
	391	{
	392	// cancel all echo characters
	393	for (i = 0; i < length ; i++)
	394	{
	395	ret = sys_call( SYSCALL_TTY_WRITE,
	396	(unsigned int)(&string_cancel),
	397	3,
	398	channel,
	399	0 );
[352]	400	if ( ret < 0 ) giet_exit("error in giet_tty_getw()");
[295]	401	}
	402	// echo character '0'
	403	string_byte = 0x30;
	404	ret = sys_call( SYSCALL_TTY_WRITE,
	405	(unsigned int)(&string_byte),
	406	1,
	407	channel,
	408	0 );
[352]	409	if ( ret < 0 ) giet_exit("error in giet_tty_getw()");
[295]	410
	411	// return 0 value
	412	*val = 0;
	413	}
	414	}
	415
	416
[258]	417	//////////////////////////////////////////////////////////////////////////////////
	418	///////////////////// TIMER related system calls ////////////////////////////////
	419	//////////////////////////////////////////////////////////////////////////////////
	420
[295]	421	///////////////////////
	422	void giet_timer_start()
[258]	423	{
[295]	424	if ( sys_call( SYSCALL_TIMER_START, 0, 0, 0, 0 ) )
	425	giet_exit("error in giet_timer_start()");
[258]	426	}
[295]	427
	428	//////////////////////
	429	void giet_timer_stop()
[258]	430	{
[295]	431	if ( sys_call( SYSCALL_TIMER_STOP, 0, 0, 0, 0 ) )
	432	giet_exit("error in giet_timer_stop()");
[258]	433	}
	434
	435
	436	//////////////////////////////////////////////////////////////////////////////////
	437	/////////////// Frame buffer device related system calls ///////////////////////
	438	//////////////////////////////////////////////////////////////////////////////////
	439
[295]	440	////////////////////////////////////////////
	441	void giet_fb_sync_write( unsigned int offset,
[258]	442	void * buffer,
	443	unsigned int length )
	444	{
[295]	445	if ( sys_call( SYSCALL_FB_SYNC_WRITE,
	446	offset,
	447	(unsigned int)buffer,
	448	length,
	449	0 ) ) giet_exit("error in giet_fb_sync_write()");
[258]	450	}
[295]	451
	452	///////////////////////////////////////////
	453	void giet_fb_sync_read( unsigned int offset,
	454	void * buffer,
	455	unsigned int length )
[258]	456	{
[295]	457	if ( sys_call( SYSCALL_FB_SYNC_READ,
	458	offset,
	459	(unsigned int)buffer,
	460	length,
	461	0 ) ) giet_exit("error in giet_fb_sync_read()");
[258]	462	}
[295]	463
	464	/////////////////////////////////////////
	465	void giet_fb_cma_init( void * buf0,
	466	void * buf1,
	467	unsigned int length )
[258]	468	{
[295]	469	if ( sys_call( SYSCALL_FB_CMA_INIT,
	470	(unsigned int)buf0,
	471	(unsigned int)buf1,
	472	length,
	473	0 ) ) giet_exit("error in giet_fb_cma_init()");
[258]	474	}
[295]	475
	476	///////////////////////////////////////////////
	477	void giet_fb_cma_write( unsigned int buffer_id )
[258]	478	{
[295]	479	if ( sys_call( SYSCALL_FB_CMA_WRITE,
	480	buffer_id,
	481	0, 0, 0 ) ) giet_exit("error in giet_fb_cma_write()");
[258]	482	}
[295]	483
	484	////////////////////////
	485	void giet_fb_cma_stop()
[258]	486	{
[295]	487	if ( sys_call( SYSCALL_FB_CMA_STOP,
	488	0, 0, 0, 0 ) ) giet_exit("error in giet_fb_cma_stop()");
[258]	489	}
	490
	491
	492	//////////////////////////////////////////////////////////////////////////////////
	493	/////////////////////// NIC related system calls /////////////////////////////////
	494	//////////////////////////////////////////////////////////////////////////////////
	495
[295]	496	/////////////////////////
	497	void giet_nic_cma_start()
[258]	498	{
[295]	499	if ( sys_call( SYSCALL_NIC_CMA_START, 0, 0, 0, 0 ) )
	500	giet_exit("error in giet_nic_cma_start()");
[258]	501	}
[295]	502
	503	/////////////////////////
	504	void giet_nic_cma_stop()
[258]	505	{
[295]	506	if ( sys_call( SYSCALL_NIC_CMA_STOP, 0, 0, 0, 0 ) )
	507	giet_exit("error in giet_nic_cma_stop()");
[258]	508	}
	509
[295]	510	///////////////////////////////////////////////////////////////////////////////////
	511	///////////////////// FAT related system calls ////////////////////////////////////
	512	///////////////////////////////////////////////////////////////////////////////////
[258]	513
[295]	514	///////////////////////////////////////////
	515	int giet_fat_open( const char* pathname,
	516	unsigned int flags )
	517	{
	518	return sys_call( SYSCALL_FAT_OPEN,
	519	(unsigned int)pathname,
	520	flags,
	521	0, 0 );
	522	}
[258]	523
[295]	524	////////////////////////////////////
	525	void giet_fat_read( unsigned int fd,
	526	void* buffer,
	527	unsigned int count,
	528	unsigned int offset )
	529	{
	530	if ( sys_call( SYSCALL_FAT_READ,
	531	fd,
	532	(unsigned int)buffer,
	533	count,
[390]	534	offset ) != count ) giet_exit("ERROR in giet_fat_read()");
[295]	535	}
	536
	537	/////////////////////////////////////
	538	void giet_fat_write( unsigned int fd,
	539	void* buffer,
	540	unsigned int count,
	541	unsigned int offset )
	542	{
	543	if ( sys_call( SYSCALL_FAT_WRITE,
	544	fd,
	545	(unsigned int)buffer,
	546	count,
[390]	547	offset ) != count ) giet_exit("ERROR in giet_fat_write()");
[295]	548	}
	549
	550	/* variant implementing the UNIX spec
[258]	551	///////////////////////////////////////////////////////////////////////////////////
[295]	552	// This system call writes to a file identified by the "fd" file descriptor.
	553	// - "buffer" is the source buffer virtual address (must be word aligned).
	554	// - "count" is a number of bytes (must be multiple of 4).
	555	// It uses the implicit "lseek" pointer in file descriptor.
[258]	556	///////////////////////////////////////////////////////////////////////////////////
[295]	557	void giet_fat_write( unsigned int fd,
	558	void* buffer,
	559	unsigned int count ) // number of bytes
[258]	560	{
[295]	561	return sys_call( SYSCALL_FAT_WRITE,
	562	fd,
	563	(unsigned int)buffer,
	564	count, 0 );
[258]	565	}
[295]	566	*/
	567
	568	/////////////////////////////////////
	569	void giet_fat_lseek( unsigned int fd,
	570	unsigned int offset,
	571	unsigned int whence )
[258]	572	{
[295]	573	if ( sys_call( SYSCALL_FAT_LSEEK,
	574	fd,
	575	offset,
	576	whence,
[390]	577	0 ) ) giet_exit("ERROR in giet_fat_lseek()");
[258]	578	}
[295]	579
	580	//////////////////////////////////////
	581	void giet_fat_fstat( unsigned int fd )
[258]	582	{
[295]	583	if ( sys_call( SYSCALL_FAT_FSTAT,
	584	fd,
[390]	585	0, 0, 0 ) ) giet_exit("ERROR in giet_fat_lseek()");
[258]	586	}
[295]	587
	588	/////////////////////////////////////
	589	void giet_fat_close( unsigned int fd )
[258]	590	{
[295]	591	if ( sys_call( SYSCALL_FAT_CLOSE,
	592	fd,
[390]	593	0, 0, 0 ) ) giet_exit("ERROR in giet_fat_close()");
[258]	594	}
[295]	595
	596
[258]	597	//////////////////////////////////////////////////////////////////////////////////
[390]	598	///////////////////// Task context system calls /////////////////////////////////
[258]	599	//////////////////////////////////////////////////////////////////////////////////
[295]	600
	601	///////////////////////
[258]	602	int giet_proc_task_id()
	603	{
	604	return sys_call( SYSCALL_LOCAL_TASK_ID,
	605	0, 0, 0, 0 );
	606	}
[295]	607
	608	/////////////////////////
[258]	609	int giet_global_task_id()
	610	{
	611	return sys_call( SYSCALL_GLOBAL_TASK_ID,
	612	0, 0, 0, 0 );
	613	}
	614
[295]	615	////////////////////
[267]	616	int giet_thread_id()
	617	{
	618	return sys_call( SYSCALL_THREAD_ID,
	619	0, 0, 0, 0 );
	620	}
	621
[295]	622
[390]	623	//////////////////////////////////////////////////////////////////////////////////
	624	///////////////////// Miscellaneous system calls /////////////////////////////////
	625	//////////////////////////////////////////////////////////////////////////////////
	626
[295]	627	//////////////////////////////
	628	void giet_exit( char* string )
[258]	629	{
[295]	630	sys_call( SYSCALL_EXIT,
	631	(unsigned int)string,
	632	0, 0, 0 );
[258]	633	}
[295]	634
	635	/////////////////////////////////////////
	636	void giet_assert( unsigned int condition,
	637	char* string )
[258]	638	{
[295]	639	if ( condition == 0 ) giet_exit( string );
[258]	640	}
[295]	641
[390]	642	//////////////////////////
	643	void giet_context_switch()
	644	{
	645	sys_call( SYSCALL_CTX_SWITCH,
	646	0, 0, 0, 0 );
	647	}
	648
[295]	649	////////////////////////////////////////////////////
	650	void giet_vobj_get_vbase( char* vspace_name,
	651	char* vobj_name,
	652	unsigned int* vobj_vaddr )
[258]	653	{
[295]	654	if ( sys_call( SYSCALL_VOBJ_GET_VBASE,
	655	(unsigned int) vspace_name,
	656	(unsigned int) vobj_name,
	657	(unsigned int) vobj_vaddr,
[390]	658	0 ) ) giet_exit("ERROR in giet_vobj_get_vbase()");
[258]	659	}
[260]	660
[295]	661	///////////////////////////////////////////////
	662	void giet_proc_number( unsigned int cluster_id,
[368]	663	unsigned int* buffer )
[260]	664	{
[295]	665	if ( sys_call( SYSCALL_PROC_NUMBER,
	666	cluster_id,
	667	(unsigned int) buffer,
[390]	668	0, 0) ) giet_exit("ERROR in giet_proc_number()");
[260]	669	}
	670
[295]	671	/////////////////////////////////////////
	672	void giet_heap_info( unsigned int* vaddr,
[368]	673	unsigned int* length,
	674	unsigned int x,
	675	unsigned int y )
[258]	676	{
[295]	677	if ( sys_call( SYSCALL_HEAP_INFO,
	678	(unsigned int)vaddr,
	679	(unsigned int)length,
[368]	680	x,
[390]	681	y ) ) giet_exit("ERROR in giet_heap_info()");
[258]	682	}
	683
[390]	684	/////////////////////////////////////////
	685	void giet_get_xy( void* ptr,
	686	unsigned int* px,
	687	unsigned int* py )
	688	{
	689	if ( sys_call( SYSCALL_GET_XY,
	690	(unsigned int)ptr,
	691	(unsigned int)px,
	692	(unsigned int)py,
	693	0 ) ) giet_exit("ERROR in giet_get_xy()");
	694	}
	695
[258]	696	// Local Variables:
	697	// tab-width: 4
	698	// c-basic-offset: 4
	699	// c-file-offsets:((innamespace . 0)(inline-open . 0))
	700	// indent-tabs-mode: nil
	701	// End:
	702	// vim: filetype=c:expandtab:shiftwidth=4:tabstop=4:softtabstop=4
	703

Note: See TracBrowser for help on using the repository browser.

Download in other formats: