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#include <synch/waitq.h>
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#include <synch/waitq.h>
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#include <synch/spinlock.h>
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#include <synch/spinlock.h>
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#include <arch/types.h>
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#include <arch/types.h>
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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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#include <func.h>
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#include <print.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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chardev_t *stdout = NULL;
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__u8 _getc(chardev_t *chardev)
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__u8 _getc(chardev_t *chardev)
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{
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{
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    __u8 ch;
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    __u8 ch;
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    ipl_t ipl;
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    ipl_t ipl;
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    if (haltstate) {
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        /* If we are here, we are hopefully on the processor, that
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         * issued the 'halt' command, so proceed to read the character
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         * directly from input
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         */
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        if (chardev->op->read)
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            return chardev->op->read(chardev);
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        /* no other way of interacting with user, halt */
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        printf("cpu: halted - no kconsole\n");
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        cpu_halt();
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    }
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    waitq_sleep(&chardev->wq);
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    waitq_sleep(&chardev->wq);
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    ipl = interrupts_disable();
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    ipl = interrupts_disable();
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    spinlock_lock(&chardev->lock);
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    spinlock_lock(&chardev->lock);
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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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    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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void putchar(char c)
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{
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{
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    if (stdout->op->write)
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    stdout->op->write(stdout, c);
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        stdout->op->write(stdout, c);
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}
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}