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#include <typedefs.h>
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#include <typedefs.h>
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#include <arch.h>
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#include <arch.h>
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/** Standard input character device. */
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/** Standard input character device. */
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chardev_t *stdin = NULL;
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chardev_t *stdin = NULL;
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chardev_t *stdout = NULL;
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/** Get string from character device.
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/** Get string from character device.
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 *
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 *
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 * Read characters from character device until first occurrence
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 * Read characters from character device until first occurrence
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 * of newline character.
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 * of newline character.
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    ch = chardev->buffer[(chardev->index - chardev->counter) % CHARDEV_BUFLEN];
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    ch = chardev->buffer[(chardev->index - chardev->counter) % CHARDEV_BUFLEN];
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    chardev->counter--;
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    chardev->counter--;
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    spinlock_unlock(&chardev->lock);
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    spinlock_unlock(&chardev->lock);
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    interrupts_restore(ipl);
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    interrupts_restore(ipl);
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    chardev->op->resume();
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    chardev->op->resume(chardev);
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    return ch;
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    return ch;
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}
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}
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void putchar(char c)
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{
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    stdout->op->write(stdout, c);
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}