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Rev 4296 Rev 4420
Line 42... Line 42...
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#include <ddi/irq.h>
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#include <ddi/irq.h>
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#include <ddi/ddi.h>
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#include <ddi/ddi.h>
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#include <ipc/event.h>
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#include <ipc/event.h>
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#include <ipc/irq.h>
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#include <ipc/irq.h>
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#include <arch.h>
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#include <arch.h>
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#include <func.h>
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#include <print.h>
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#include <print.h>
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#include <putchar.h>
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#include <putchar.h>
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#include <atomic.h>
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#include <atomic.h>
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#include <syscall/copy.h>
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#include <syscall/copy.h>
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#include <errno.h>
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#include <errno.h>
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/** Number of stored (not printed) kernel log characters */
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/** Number of stored (not printed) kernel log characters */
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static size_t klog_stored = 0;
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static size_t klog_stored = 0;
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/** Number of stored kernel log characters for uspace */
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/** Number of stored kernel log characters for uspace */
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static size_t klog_uspace = 0;
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static size_t klog_uspace = 0;
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/** Silence output */
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bool silent = false;
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/** Kernel log spinlock */
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/** Kernel log spinlock */
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SPINLOCK_INITIALIZE(klog_lock);
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SPINLOCK_INITIALIZE(klog_lock);
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/** Physical memory area used for klog buffer */
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/** Physical memory area used for klog buffer */
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static parea_t klog_parea;
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static parea_t klog_parea;
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- 
 
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static indev_operations_t stdin_ops = {
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    .poll = NULL
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};
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/** Silence output */
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bool silent = false;
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/** Standard input and output character devices */
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/** Standard input and output character devices */
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indev_t *stdin = NULL;
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indev_t *stdin = NULL;
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outdev_t *stdout = NULL;
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outdev_t *stdout = NULL;
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 88 
 
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indev_t *stdin_wire(void)
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{
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    if (stdin == NULL) {
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        stdin = malloc(sizeof(indev_t), FRAME_ATOMIC);
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        if (stdin != NULL)
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            indev_initialize("stdin", stdin, &stdin_ops);
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    }
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 96 
   
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    return stdin;
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}
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/** Initialize kernel logging facility
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/** Initialize kernel logging facility
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 *
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 *
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 * The shared area contains kernel cyclic buffer. Userspace application may
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 * The shared area contains kernel cyclic buffer. Userspace application may
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 * be notified on new data with indication of position and size
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 * be notified on new data with indication of position and size
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 * of the data within the circular buffer.
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 * of the data within the circular buffer.
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    spinlock_unlock(&klog_lock);
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    spinlock_unlock(&klog_lock);
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}
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}
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 124 
 
111 
void grab_console(void)
 125 
void grab_console(void)
112 
{
 126 
{
- 
 
 127 
    bool prev = silent;
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 128 
   
113 
    silent = false;
 129 
    silent = false;
114 
    arch_grab_console();
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    arch_grab_console();
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    /* Force the console to print the prompt */
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    if ((stdin) && (prev))
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        indev_push_character(stdin, '\n');
115 
}
 135 
}
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117 
void release_console(void)
 137 
void release_console(void)
118 
{
 138 
{
119 
    silent = true;
 139 
    silent = true;
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{
 156 
{
137 
    release_console();
 157 
    release_console();
138 
    return true;
 158 
    return true;
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}
 159 
}
140 
 
 160 
 
141 
bool check_poll(indev_t *indev)
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142 
{
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143 
    if (indev == NULL)
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        return false;
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146 
    if (indev->op == NULL)
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        return false;
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149 
    return (indev->op->poll != NULL);
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}
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152 
/** Get character from input character device. Do not echo character.
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153 
 *
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154 
 * @param indev Input character device.
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 * @return Character read.
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156 
 *
 - 
 
157 
 */
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158 
wchar_t _getc(indev_t *indev)
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159 
{
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160 
    if (atomic_get(&haltstate)) {
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161 
        /* If we are here, we are hopefully on the processor that
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162 
         * issued the 'halt' command, so proceed to read the character
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163 
         * directly from input
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164 
         */
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        if (check_poll(indev))
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            return indev->op->poll(indev);
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167 
       
 - 
 
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        /* No other way of interacting with user */
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169 
        interrupts_disable();
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170 
       
 - 
 
171 
        if (CPU)
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172 
            printf("cpu%u: ", CPU->id);
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173 
        else
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174 
            printf("cpu: ");
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175 
        printf("halted (no polling input)\n");
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        cpu_halt();
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177 
    }
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178 
   
 - 
 
179 
    waitq_sleep(&indev->wq);
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180 
    ipl_t ipl = interrupts_disable();
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181 
    spinlock_lock(&indev->lock);
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182 
    wchar_t ch = indev->buffer[(indev->index - indev->counter) % INDEV_BUFLEN];
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183 
    indev->counter--;
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184 
    spinlock_unlock(&indev->lock);
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185 
    interrupts_restore(ipl);
 - 
 
186 
   
 - 
 
187 
    return ch;
 - 
 
188 
}
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189 
 
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190 
/** Get string from input character device.
 161 
/** Get string from input character device.
191 
 *
 162 
 *
192 
 * Read characters from input character device until first occurrence
 163 
 * Read characters from input character device until first occurrence
193 
 * of newline character.
 164 
 * of newline character.
194 
 *
 165 
 *
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204 
    size_t offset = 0;
 175 
    size_t offset = 0;
205 
    count_t count = 0;
 176 
    count_t count = 0;
206 
    buf[offset] = 0;
 177 
    buf[offset] = 0;
207 
   
 178 
   
208 
    wchar_t ch;
 179 
    wchar_t ch;
209 
    while ((ch = _getc(indev)) != '\n') {
 180 
    while ((ch = indev_pop_character(indev)) != '\n') {
210 
        if (ch == '\b') {
 181 
        if (ch == '\b') {
211 
            if (count > 0) {
 182 
            if (count > 0) {
212 
                /* Space, backspace, space */
 183 
                /* Space, backspace, space */
213 
                putchar('\b');
 184 
                putchar('\b');
214 
                putchar(' ');
 185 
                putchar(' ');
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230 
}
 201 
}
231 
 
 202 
 
232 
/** Get character from input device & echo it to screen */
 203 
/** Get character from input device & echo it to screen */
233 
wchar_t getc(indev_t *indev)
 204 
wchar_t getc(indev_t *indev)
234 
{
 205 
{
235 
    wchar_t ch = _getc(indev);
 206 
    wchar_t ch = indev_pop_character(indev);
236 
    putchar(ch);
 207 
    putchar(ch);
237 
    return ch;
 208 
    return ch;
238 
}
 209 
}
239 
 
 210 
 
240 
void klog_update(void)
 211 
void klog_update(void)