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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> |
|
- | 33 | ||
32 | 34 | ||
33 | static char digits[] = "0123456789abcdef"; |
35 | static char digits[] = "0123456789abcdef"; |
34 | static spinlock_t printflock; |
36 | static spinlock_t printflock; |
35 | 37 | ||
36 | void print_str(char *str) |
38 | void print_str(char *str) |
37 | { |
39 | { |
38 | int i = 0; |
40 | int i = 0; |
39 | char c; |
41 | char c; |
40 | 42 | ||
41 | while (c = str[i++]) |
43 | while (c = str[i++]) |
42 | putchar(c); |
44 | putchar(c); |
43 | } |
45 | } |
44 | 46 | ||
45 | 47 | ||
46 | /* |
48 | /* |
47 | * This is a universal function for printing hexadecimal numbers of fixed |
49 | * This is a universal function for printing hexadecimal numbers of fixed |
48 | * width. |
50 | * width. |
49 | */ |
51 | */ |
50 | void print_fixed_hex(__u32 num, int width) |
52 | void print_fixed_hex(__u32 num, int width) |
51 | { |
53 | { |
52 | int i; |
54 | int i; |
53 | 55 | ||
54 | for (i = width*8 - 4; i >= 0; i -= 4) |
56 | for (i = width*8 - 4; i >= 0; i -= 4) |
55 | putchar(digits[(num>>i) & 0xf]); |
57 | putchar(digits[(num>>i) & 0xf]); |
56 | } |
58 | } |
57 | 59 | ||
58 | /* |
60 | /* |
59 | * This is a universal function for printing decimal and hexadecimal numbers. |
61 | * This is a universal function for printing decimal and hexadecimal numbers. |
60 | * It prints only significant digits. |
62 | * It prints only significant digits. |
61 | */ |
63 | */ |
62 | void print_number(__u32 num, int base) |
64 | void print_number(__u32 num, int base) |
63 | { |
65 | { |
64 | char d[32+1]; /* this is good enough even for base == 2 */ |
66 | char d[32+1]; /* this is good enough even for base == 2 */ |
65 | int i = 31; |
67 | int i = 31; |
66 | 68 | ||
67 | do { |
69 | do { |
68 | d[i--] = digits[num % base]; |
70 | d[i--] = digits[num % base]; |
69 | } while (num /= base); |
71 | } while (num /= base); |
70 | 72 | ||
71 | d[32] = 0; |
73 | d[32] = 0; |
72 | print_str(&d[i + 1]); |
74 | print_str(&d[i + 1]); |
73 | } |
75 | } |
74 | 76 | ||
75 | /* |
77 | /* |
76 | * This is our function for printing formatted text. |
78 | * This is our function for printing formatted text. |
77 | * It's much simpler than the user-space one. |
79 | * It's much simpler than the user-space one. |
78 | * We are greateful for this function. |
80 | * We are greateful for this function. |
79 | */ |
81 | */ |
80 | void printf(char *fmt, ...) |
82 | void printf(char *fmt, ...) |
81 | { |
83 | { |
82 | int irqpri, i = 0, pos = 0; |
84 | int irqpri, i = 0; |
- | 85 | va_list ap; |
|
83 | char c; |
86 | char c; |
- | 87 | ||
- | 88 | va_start(ap, fmt); |
|
84 | 89 | ||
85 | irqpri = cpu_priority_high(); |
90 | irqpri = cpu_priority_high(); |
86 | spinlock_lock(&printflock); |
91 | spinlock_lock(&printflock); |
- | 92 | ||
87 | while (c = fmt[i++]) { |
93 | while (c = fmt[i++]) { |
88 | switch (c) { |
94 | switch (c) { |
89 | 95 | ||
90 | /* control character */ |
96 | /* control character */ |
91 | case '%': |
97 | case '%': |
92 | switch (c = fmt[i++]) { |
98 | switch (c = fmt[i++]) { |
93 | 99 | ||
94 | /* percentile itself */ |
100 | /* percentile itself */ |
95 | case '%': |
101 | case '%': |
96 | break; |
102 | break; |
97 | 103 | ||
98 | /* |
104 | /* |
99 | * String and character conversions. |
105 | * String and character conversions. |
100 | */ |
106 | */ |
101 | case 's': |
107 | case 's': |
102 | print_str((char *) *(((__address *) &fmt + (++pos)))); |
108 | print_str(va_arg(ap, char_ptr)); |
103 | goto loop; |
109 | goto loop; |
104 | 110 | ||
105 | case 'c': |
111 | case 'c': |
106 | c = *((char *) ((__address *)(&fmt + (++pos)))); |
112 | c = va_arg(ap, char); |
107 | break; |
113 | break; |
108 | 114 | ||
109 | /* |
115 | /* |
110 | * Hexadecimal conversions with fixed width. |
116 | * Hexadecimal conversions with fixed width. |
111 | */ |
117 | */ |
112 | case 'L': |
118 | case 'L': |
113 | print_str("0x"); |
119 | print_str("0x"); |
114 | case 'l': |
120 | case 'l': |
115 | print_fixed_hex(*((__address *)(&fmt + (++pos))),INT32); |
121 | print_fixed_hex(va_arg(ap, __native), INT32); |
116 | goto loop; |
122 | goto loop; |
117 | 123 | ||
118 | case 'W': |
124 | case 'W': |
119 | print_str("0x"); |
125 | print_str("0x"); |
120 | case 'w': |
126 | case 'w': |
121 | print_fixed_hex(*((__address *)(&fmt + (++pos))),INT16); |
127 | print_fixed_hex(va_arg(ap, __native), INT16); |
122 | goto loop; |
128 | goto loop; |
123 | 129 | ||
124 | case 'B': |
130 | case 'B': |
125 | print_str("0x"); |
131 | print_str("0x"); |
126 | case 'b': |
132 | case 'b': |
127 | print_fixed_hex(*((__address *)(&fmt + (++pos))),INT8); |
133 | print_fixed_hex(va_arg(ap, __native), INT8); |
128 | goto loop; |
134 | goto loop; |
129 | 135 | ||
130 | /* |
136 | /* |
131 | * Decimal and hexadecimal conversions. |
137 | * Decimal and hexadecimal conversions. |
132 | */ |
138 | */ |
133 | case 'd': |
139 | case 'd': |
134 | print_number(*((__address *)(&fmt + (++pos))), 10); |
140 | print_number(va_arg(ap, __native), 10); |
135 | goto loop; |
141 | goto loop; |
136 | 142 | ||
137 | case 'X': |
143 | case 'X': |
138 | print_str("0x"); |
144 | print_str("0x"); |
139 | case 'x': |
145 | case 'x': |
140 | print_number(*((__address *)(&fmt + (++pos))), 16); |
146 | print_number(va_arg(ap, __native), 16); |
141 | goto loop; |
147 | goto loop; |
142 | 148 | ||
143 | /* |
149 | /* |
144 | * Bad formatting. |
150 | * Bad formatting. |
145 | */ |
151 | */ |
146 | default: |
152 | default: |
147 | goto out; |
153 | goto out; |
148 | } |
154 | } |
149 | 155 | ||
150 | default: putchar(c); |
156 | default: putchar(c); |
151 | } |
157 | } |
152 | 158 | ||
153 | loop: |
159 | loop: |
154 | ; |
160 | ; |
155 | } |
161 | } |
156 | 162 | ||
157 | out: |
163 | out: |
158 | spinlock_unlock(&printflock); |
164 | spinlock_unlock(&printflock); |
159 | cpu_priority_restore(irqpri); |
165 | cpu_priority_restore(irqpri); |
- | 166 | ||
- | 167 | va_end(ap); |
|
160 | } |
168 | } |
161 | 169 |