1 | /* |
---|
2 | * x86_printf.c - A printf function for x86 (debug only). |
---|
3 | * |
---|
4 | * Copyright (c) [don't know exactly, found on the internet... anyway, this |
---|
5 | * file will be removed soon...] |
---|
6 | * |
---|
7 | * This file is part of ALMOS-MKH. |
---|
8 | * |
---|
9 | * ALMOS-MKH is free software; you can redistribute it and/or modify it |
---|
10 | * under the terms of the GNU General Public License as published by |
---|
11 | * the Free Software Foundation; version 2.0 of the License. |
---|
12 | * |
---|
13 | * ALMOS-MKH is distributed in the hope that it will be useful, but |
---|
14 | * WITHOUT ANY WARRANTY; without even the implied warranty of |
---|
15 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
---|
16 | * General Public License for more details. |
---|
17 | * |
---|
18 | * You should have received a copy of the GNU General Public License |
---|
19 | * along with ALMOS-MKH.; if not, write to the Free Software Foundation, |
---|
20 | * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA |
---|
21 | */ |
---|
22 | |
---|
23 | #include <hal_types.h> |
---|
24 | #include <hal_boot.h> |
---|
25 | #include <hal_internal.h> |
---|
26 | |
---|
27 | #include <memcpy.h> |
---|
28 | #include <thread.h> |
---|
29 | #include <string.h> |
---|
30 | #include <process.h> |
---|
31 | #include <printk.h> |
---|
32 | #include <vmm.h> |
---|
33 | #include <core.h> |
---|
34 | #include <cluster.h> |
---|
35 | |
---|
36 | #define roundup(x, y) ((((x)+((y)-1))/(y))*(y)) |
---|
37 | #define CONS_X_SIZE 160 |
---|
38 | #define CONS_Y_SIZE 80 |
---|
39 | |
---|
40 | extern intptr_t iom_base; |
---|
41 | size_t cons_ptr __in_kdata = 0; |
---|
42 | |
---|
43 | void x86_panic(char *msg) |
---|
44 | { |
---|
45 | x86_printf("!!!!! PANIC !!!!!\n"); |
---|
46 | x86_printf("-> %s\n", msg); |
---|
47 | x86_printf("!!!!!!!!!!!!!!!!!\n"); |
---|
48 | while (1); |
---|
49 | } |
---|
50 | |
---|
51 | static void x86_putc(char c) |
---|
52 | { |
---|
53 | if (c == '\n') { |
---|
54 | cons_ptr = roundup(cons_ptr, CONS_X_SIZE); |
---|
55 | return; |
---|
56 | } |
---|
57 | |
---|
58 | char *video = (char *)iom_base + (0xB8000 - IOM_BEGIN) + cons_ptr; |
---|
59 | *video = c; |
---|
60 | cons_ptr++, video++; |
---|
61 | *video = 0x7; |
---|
62 | cons_ptr++, video++; |
---|
63 | } |
---|
64 | |
---|
65 | static void x86_itoa(char *buf, unsigned long int n, int base) |
---|
66 | { |
---|
67 | unsigned long int tmp; |
---|
68 | int i, j; |
---|
69 | |
---|
70 | tmp = n; |
---|
71 | i = 0; |
---|
72 | |
---|
73 | do { |
---|
74 | tmp = n % base; |
---|
75 | buf[i++] = (tmp < 10) ? (tmp + '0') : (tmp + 'a' - 10); |
---|
76 | } while (n /= base); |
---|
77 | buf[i--] = 0; |
---|
78 | |
---|
79 | for (j = 0; j < i; j++, i--) { |
---|
80 | tmp = buf[j]; |
---|
81 | buf[j] = buf[i]; |
---|
82 | buf[i] = tmp; |
---|
83 | } |
---|
84 | } |
---|
85 | |
---|
86 | static void x86_ztoa(char *buf, uint64_t n, uint64_t base) |
---|
87 | { |
---|
88 | uint64_t tmp; |
---|
89 | int i, j; |
---|
90 | |
---|
91 | tmp = n; |
---|
92 | i = 0; |
---|
93 | |
---|
94 | do { |
---|
95 | tmp = n % base; |
---|
96 | buf[i++] = (tmp < 10) ? (tmp + '0') : (tmp + 'a' - 10); |
---|
97 | } while (n /= base); |
---|
98 | buf[i--] = 0; |
---|
99 | |
---|
100 | for (j = 0; j < i; j++, i--) { |
---|
101 | tmp = buf[j]; |
---|
102 | buf[j] = buf[i]; |
---|
103 | buf[i] = tmp; |
---|
104 | } |
---|
105 | } |
---|
106 | |
---|
107 | void x86_printf(char *s, ...) |
---|
108 | { |
---|
109 | va_list ap; |
---|
110 | |
---|
111 | char buf[16]; |
---|
112 | int i, j, size, buflen, neg; |
---|
113 | |
---|
114 | unsigned char c; |
---|
115 | int ival; |
---|
116 | unsigned int uival; |
---|
117 | uint64_t zval; |
---|
118 | |
---|
119 | va_start(ap, s); |
---|
120 | |
---|
121 | while ((c = *s++)) { |
---|
122 | size = 0; |
---|
123 | neg = 0; |
---|
124 | |
---|
125 | if (c == 0) |
---|
126 | break; |
---|
127 | else if (c == '%') { |
---|
128 | c = *s++; |
---|
129 | if (c >= '0' && c <= '9') { |
---|
130 | size = c - '0'; |
---|
131 | c = *s++; |
---|
132 | } |
---|
133 | |
---|
134 | if (c == 'z') { |
---|
135 | zval = va_arg(ap, uint64_t); |
---|
136 | x86_ztoa(buf, zval, 10); |
---|
137 | |
---|
138 | buflen = strlen(buf); |
---|
139 | if (buflen < size) |
---|
140 | for (i = size, j = buflen; i >= 0; i--, j--) |
---|
141 | buf[i] = (j >= 0) ? buf[j] : '0'; |
---|
142 | |
---|
143 | x86_printf(buf); |
---|
144 | } else if (c == 'Z') { |
---|
145 | zval = va_arg(ap, uint64_t); |
---|
146 | x86_ztoa(buf, zval, 16); |
---|
147 | |
---|
148 | buflen = strlen(buf); |
---|
149 | if (buflen < size) |
---|
150 | for (i = size, j = buflen; i >= 0; i--, j--) |
---|
151 | buf[i] = (j >= 0) ? buf[j] : '0'; |
---|
152 | |
---|
153 | x86_printf("0x%s", buf); |
---|
154 | } else if (c == 'd') { |
---|
155 | ival = va_arg(ap, int); |
---|
156 | if (ival < 0) { |
---|
157 | uival = 0 - ival; |
---|
158 | neg++; |
---|
159 | } else |
---|
160 | uival = ival; |
---|
161 | x86_itoa(buf, uival, 10); |
---|
162 | |
---|
163 | buflen = strlen(buf); |
---|
164 | if (buflen < size) |
---|
165 | for (i = size, j = buflen; i >= 0; |
---|
166 | i--, j--) |
---|
167 | buf[i] = |
---|
168 | (j >= |
---|
169 | 0) ? buf[j] : '0'; |
---|
170 | |
---|
171 | if (neg) |
---|
172 | x86_printf("-%s", buf); |
---|
173 | else |
---|
174 | x86_printf(buf); |
---|
175 | } else if (c == 'u') { |
---|
176 | uival = va_arg(ap, int); |
---|
177 | x86_itoa(buf, uival, 10); |
---|
178 | |
---|
179 | buflen = strlen(buf); |
---|
180 | if (buflen < size) |
---|
181 | for (i = size, j = buflen; i >= 0; |
---|
182 | i--, j--) |
---|
183 | buf[i] = |
---|
184 | (j >= |
---|
185 | 0) ? buf[j] : '0'; |
---|
186 | |
---|
187 | x86_printf(buf); |
---|
188 | } else if (c == 'x' || c == 'X') { |
---|
189 | uival = va_arg(ap, int); |
---|
190 | x86_itoa(buf, uival, 16); |
---|
191 | |
---|
192 | buflen = strlen(buf); |
---|
193 | if (buflen < size) |
---|
194 | for (i = size, j = buflen; i >= 0; |
---|
195 | i--, j--) |
---|
196 | buf[i] = |
---|
197 | (j >= |
---|
198 | 0) ? buf[j] : '0'; |
---|
199 | |
---|
200 | x86_printf("0x%s", buf); |
---|
201 | } else if (c == 'p') { |
---|
202 | uival = va_arg(ap, int); |
---|
203 | x86_itoa(buf, uival, 16); |
---|
204 | size = 8; |
---|
205 | |
---|
206 | buflen = strlen(buf); |
---|
207 | if (buflen < size) |
---|
208 | for (i = size, j = buflen; i >= 0; |
---|
209 | i--, j--) |
---|
210 | buf[i] = |
---|
211 | (j >= |
---|
212 | 0) ? buf[j] : '0'; |
---|
213 | |
---|
214 | x86_printf("0x%s", buf); |
---|
215 | } else if (c == 's') { |
---|
216 | x86_printf((char *) va_arg(ap, int)); |
---|
217 | } |
---|
218 | } else |
---|
219 | x86_putc(c); |
---|
220 | } |
---|
221 | |
---|
222 | return; |
---|
223 | } |
---|