WebSVN – HelenOS-historic – Diff – /SPARTAN/trunk/src/debug/print.c


/*
 * Copyright (C) 2001-2004 Jakub Jermar
 * 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.
 */
 
#include <putchar.h>
#include <print.h>
#include <synch/spinlock.h>
#include <arch/arg.h>
 
 
static char digits[] = "0123456789abcdef"; /**< Hexadecimal characters */
static spinlock_t printflock;              /**< printf spinlock */
 
 
/** Print NULL terminated string
 *
 * Print characters from str using putchar() until
 * \x00 character is reached.
 *
 * @param str Characters to print.
 *
 */
void print_str(const char *str)
{
        int i = 0;
    char c;
   
    while (c = str[i++])
        putchar(c);
}
 
 
/** Print hexadecimal digits
 *
 * Print fixed count of hexadecimal digits from
 * the number num. The digits are printed in
 * natural left-to-right order starting with
 * the width-th digit.
 *
 * @param num   Number containing digits.
 * @param width Count of digits to print.
 *
 */
void print_fixed_hex(const __native num, const int width)
{
    int i;
   
    for (i = width*8 - 4; i >= 0; i -= 4)
        putchar(digits[(num>>i) & 0xf]);
}
 
 
/** Print number in given base
 *
 * Print significant digits of a number in given
 * base.
 *
 * @param num  Number to print.
 * @param base Base to print the number in (should
 *             be in range 2 .. 16).
 *
 */
void print_number(const __native num, const int base)
{
    int val = num;
    char d[sizeof(__native)*8+1];       /* this is good enough even for base == 2 */
        int i = sizeof(__native)*8-1;
   
    do {
        d[i--] = digits[val % base];
    } while (val /= base);
   
    d[sizeof(__native)*8] = 0; 
    print_str(&d[i + 1]);
}
 
 
/** General formatted text print
 *
 * Print text formatted according the fmt parameter
 * and variant arguments. Each formatting directive
 * begins with % (percentage) character and one of the
 * following character:
 *
 * %    Prints the percentage character.
 * s    The next variant argument is threated as char*
 *      and printed as a NULL terminated string.
 * c    The next variant argument is threated as a single char.
 * l    The next variant argument is threated as a 32b integer
 *      and printed in full hexadecimal width.
 * L    As with 'l', but '0x' is prefixed.
 * w    The next variant argument is threated as a 16b integer
 *      and printed in full hexadecimal width.
 * W    As with 'w', but '0x' is prefixed.
 * b    The next variant argument is threated as a 8b integer
 *      and printed in full hexadecimal width.
 * N    As with 'b', but '0x' is prefixed.
 * d    The next variant argument is threated as integer
 *      and printed in standard decimal format (only significant
 *      digits).
 * x    The next variant argument is threated as integer
 *      and printed in standard hexadecimal format (only significant
 *      digits).
 * X    As with 'x', but '0x' is prefixed.
 *
 * All other characters from fmt except the formatting directives
 * are printed in verbatim.
 *
 * @param fmt Formatting NULL terminated string.
 *
 */
void printf(const char *fmt, ...)
{
    int irqpri, i = 0;
    va_list ap;
    char c;
 
    va_start(ap, fmt);
 
    irqpri = cpu_priority_high();
    spinlock_lock(&printflock);
 
    while (c = fmt[i++]) {
        switch (c) {
 
            /* control character */
            case '%':
                switch (c = fmt[i++]) {
 
                /* percentile itself */
                case '%':
                    break;
 
                /*
                 * String and character conversions.
                 */
                case 's':
                    print_str(va_arg(ap, char_ptr));
                    goto loop;
 
                case 'c':
                    c = (char) va_arg(ap, int);
                    break;
 
                /*
                         * Hexadecimal conversions with fixed width.
                         */
                case 'L':
                    print_str("0x");
                case 'l':
                        print_fixed_hex(va_arg(ap, __native), INT32);
                    goto loop;
 
                case 'W':
                    print_str("0x");
                case 'w':
                        print_fixed_hex(va_arg(ap, __native), INT16);
                    goto loop;
 
                case 'B':
                    print_str("0x");
                case 'b':
                        print_fixed_hex(va_arg(ap, __native), INT8);
                    goto loop;
 
                /*
                         * Decimal and hexadecimal conversions.
                         */
                case 'd':
                        print_number(va_arg(ap, __native), 10);
                    goto loop;
 
                case 'X':
                            print_str("0x");
                case 'x':
                        print_number(va_arg(ap, __native), 16);
                    goto loop;
       
                /*
                 * Bad formatting.
                 */
                default:
                    goto out;
                }
 
            default: putchar(c);
        }
   
loop:
        ;
    }
 
out:
    spinlock_unlock(&printflock);
    cpu_priority_restore(irqpri);
   
    va_end(ap);
}
 

Rev 61	Rev 63
1	/*	1	/*
2	* Copyright (C) 2001-2004 Jakub Jermar	2	* Copyright (C) 2001-2004 Jakub Jermar
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	#include <putchar.h>	29	#include <putchar.h>
30	#include <print.h>	30	#include <print.h>
31	#include <synch/spinlock.h>	31	#include <synch/spinlock.h>
32	#include <arch/arg.h>	32	#include <arch/arg.h>
33		33
34		34
35	static char digits[] = "0123456789abcdef"; /*< Hexadecimal characters /	35	static char digits[] = "0123456789abcdef"; /*< Hexadecimal characters /
36	static spinlock_t printflock; /*< printf spinlock /	36	static spinlock_t printflock; /*< printf spinlock /
37		37
38		38
39	/** Print NULL terminated string	39	/** Print NULL terminated string
40	*	40	*
41	* Print characters from str using putchar() until	41	* Print characters from str using putchar() until
42	* \x00 character is reached.	42	* \x00 character is reached.
43	*	43	*
44	* @param str Characters to print.	44	* @param str Characters to print.
45	*	45	*
46	*/	46	*/
47	void print_str(char *str)	47	void print_str(const char *str)
48	{	48	{
49	int i = 0;	49	int i = 0;
50	char c;	50	char c;
51		51
52	while (c = str[i++])	52	while (c = str[i++])
53	putchar(c);	53	putchar(c);
54	}	54	}
55		55
56		56
57	/** Print hexadecimal digits	57	/** Print hexadecimal digits
58	*	58	*
59	* Print fixed count of hexadecimal digits from	59	* Print fixed count of hexadecimal digits from
60	* the number num. The digits are printed in	60	* the number num. The digits are printed in
61	* natural left-to-right order starting with	61	* natural left-to-right order starting with
62	* the width-th digit.	62	* the width-th digit.
63	*	63	*
64	* @param num Number containing digits.	64	* @param num Number containing digits.
65	* @param width Count of digits to print.	65	* @param width Count of digits to print.
66	*	66	*
67	*/	67	*/
68	void print_fixed_hex(__native num, int width)	68	void print_fixed_hex(const __native num, const int width)
69	{	69	{
70	int i;	70	int i;
71		71
72	for (i = width*8 - 4; i >= 0; i -= 4)	72	for (i = width*8 - 4; i >= 0; i -= 4)
73	putchar(digits[(num>>i) & 0xf]);	73	putchar(digits[(num>>i) & 0xf]);
74	}	74	}
75		75
76		76
77	/** Print number in given base	77	/** Print number in given base
78	*	78	*
79	* Print significant digits of a number in given	79	* Print significant digits of a number in given
80	* base.	80	* base.
81	*	81	*
82	* @param num Number to print.	82	* @param num Number to print.
83	* @param base Base to print the number in (should	83	* @param base Base to print the number in (should
84	* be in range 2 .. 16).	84	* be in range 2 .. 16).
85	*	85	*
86	*/	86	*/
87	void print_number(__native num, int base)	87	void print_number(const __native num, const int base)
88	{	88	{
-		89	int val = num;
89	char d[sizeof(__native)8+1]; / this is good enough even for base == 2 */	90	char d[sizeof(__native)8+1]; / this is good enough even for base == 2 */
90	int i = sizeof(__native)*8-1;	91	int i = sizeof(__native)*8-1;
91		92
92	do {	93	do {
93	d[i--] = digits[num % base];	94	d[i--] = digits[val % base];
94	} while (num /= base);	95	} while (val /= base);
95		96
96	d[sizeof(__native)*8] = 0;	97	d[sizeof(__native)*8] = 0;
97	print_str(&d[i + 1]);	98	print_str(&d[i + 1]);
98	}	99	}
99		100
100		101
101	/** General formatted text print	102	/** General formatted text print
102	*	103	*
103	* Print text formatted according the fmt parameter	104	* Print text formatted according the fmt parameter
104	* and variant arguments. Each formatting directive	105	* and variant arguments. Each formatting directive
105	* begins with % (percentage) character and one of the	106	* begins with % (percentage) character and one of the
106	* following character:	107	* following character:
107	*	108	*
108	* % Prints the percentage character.	109	* % Prints the percentage character.
109	* s The next variant argument is threated as char*	110	* s The next variant argument is threated as char*
110	* and printed as a NULL terminated string.	111	* and printed as a NULL terminated string.
111	* c The next variant argument is threated as a single char.	112	* c The next variant argument is threated as a single char.
112	* l The next variant argument is threated as a 32b integer	113	* l The next variant argument is threated as a 32b integer
113	* and printed in full hexadecimal width.	114	* and printed in full hexadecimal width.
114	* L As with 'l', but '0x' is prefixed.	115	* L As with 'l', but '0x' is prefixed.
115	* w The next variant argument is threated as a 16b integer	116	* w The next variant argument is threated as a 16b integer
116	* and printed in full hexadecimal width.	117	* and printed in full hexadecimal width.
117	* W As with 'w', but '0x' is prefixed.	118	* W As with 'w', but '0x' is prefixed.
118	* b The next variant argument is threated as a 8b integer	119	* b The next variant argument is threated as a 8b integer
119	* and printed in full hexadecimal width.	120	* and printed in full hexadecimal width.
120	* N As with 'b', but '0x' is prefixed.	121	* N As with 'b', but '0x' is prefixed.
121	* d The next variant argument is threated as integer	122	* d The next variant argument is threated as integer
122	* and printed in standard decimal format (only significant	123	* and printed in standard decimal format (only significant
123	* digits).	124	* digits).
124	* x The next variant argument is threated as integer	125	* x The next variant argument is threated as integer
125	* and printed in standard hexadecimal format (only significant	126	* and printed in standard hexadecimal format (only significant
126	* digits).	127	* digits).
127	* X As with 'x', but '0x' is prefixed.	128	* X As with 'x', but '0x' is prefixed.
128	*	129	*
129	* All other characters from fmt except the formatting directives	130	* All other characters from fmt except the formatting directives
130	* are printed in verbatim.	131	* are printed in verbatim.
131	*	132	*
132	* @param fmt Formatting NULL terminated string.	133	* @param fmt Formatting NULL terminated string.
133	*	134	*
134	*/	135	*/
135	void printf(char *fmt, ...)	136	void printf(const char *fmt, ...)
136	{	137	{
137	int irqpri, i = 0;	138	int irqpri, i = 0;
138	va_list ap;	139	va_list ap;
139	char c;	140	char c;
140		141
141	va_start(ap, fmt);	142	va_start(ap, fmt);
142		143
143	irqpri = cpu_priority_high();	144	irqpri = cpu_priority_high();
144	spinlock_lock(&printflock);	145	spinlock_lock(&printflock);
145		146
146	while (c = fmt[i++]) {	147	while (c = fmt[i++]) {
147	switch (c) {	148	switch (c) {
148		149
149	/* control character */	150	/* control character */
150	case '%':	151	case '%':
151	switch (c = fmt[i++]) {	152	switch (c = fmt[i++]) {
152		153
153	/* percentile itself */	154	/* percentile itself */
154	case '%':	155	case '%':
155	break;	156	break;
156		157
157	/*	158	/*
158	* String and character conversions.	159	* String and character conversions.
159	*/	160	*/
160	case 's':	161	case 's':
161	print_str(va_arg(ap, char_ptr));	162	print_str(va_arg(ap, char_ptr));
162	goto loop;	163	goto loop;
163		164
164	case 'c':	165	case 'c':
165	c = (char) va_arg(ap, int);	166	c = (char) va_arg(ap, int);
166	break;	167	break;
167		168
168	/*	169	/*
169	* Hexadecimal conversions with fixed width.	170	* Hexadecimal conversions with fixed width.
170	*/	171	*/
171	case 'L':	172	case 'L':
172	print_str("0x");	173	print_str("0x");
173	case 'l':	174	case 'l':
174	print_fixed_hex(va_arg(ap, __native), INT32);	175	print_fixed_hex(va_arg(ap, __native), INT32);
175	goto loop;	176	goto loop;
176		177
177	case 'W':	178	case 'W':
178	print_str("0x");	179	print_str("0x");
179	case 'w':	180	case 'w':
180	print_fixed_hex(va_arg(ap, __native), INT16);	181	print_fixed_hex(va_arg(ap, __native), INT16);
181	goto loop;	182	goto loop;
182		183
183	case 'B':	184	case 'B':
184	print_str("0x");	185	print_str("0x");
185	case 'b':	186	case 'b':
186	print_fixed_hex(va_arg(ap, __native), INT8);	187	print_fixed_hex(va_arg(ap, __native), INT8);
187	goto loop;	188	goto loop;
188		189
189	/*	190	/*
190	* Decimal and hexadecimal conversions.	191	* Decimal and hexadecimal conversions.
191	*/	192	*/
192	case 'd':	193	case 'd':
193	print_number(va_arg(ap, __native), 10);	194	print_number(va_arg(ap, __native), 10);
194	goto loop;	195	goto loop;
195		196
196	case 'X':	197	case 'X':
197	print_str("0x");	198	print_str("0x");
198	case 'x':	199	case 'x':
199	print_number(va_arg(ap, __native), 16);	200	print_number(va_arg(ap, __native), 16);
200	goto loop;	201	goto loop;
201		202
202	/*	203	/*
203	* Bad formatting.	204	* Bad formatting.
204	*/	205	*/
205	default:	206	default:
206	goto out;	207	goto out;
207	}	208	}
208		209
209	default: putchar(c);	210	default: putchar(c);
210	}	211	}
211		212
212	loop:	213	loop:
213	;	214	;
214	}	215	}
215		216
216	out:	217	out:
217	spinlock_unlock(&printflock);	218	spinlock_unlock(&printflock);
218	cpu_priority_restore(irqpri);	219	cpu_priority_restore(irqpri);
219		220
220	va_end(ap);	221	va_end(ap);
221	}	222	}
222		223

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(root)/SPARTAN/trunk/src/debug/print.c – Rev 61 → 63