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Rev 2441 Rev 2630
Line 73... Line 73...
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        newmap = (uint8_t *) malloc(BITS2BYTES(bits), FRAME_ATOMIC);
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        newmap = (uint8_t *) malloc(BITS2BYTES(bits), FRAME_ATOMIC);
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        if (!newmap)
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        if (!newmap)
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            return ENOMEM;
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            return ENOMEM;
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        bitmap_initialize(&oldiomap, task->arch.iomap.map, task->arch.iomap.bits);
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        bitmap_initialize(&oldiomap, task->arch.iomap.map,
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            task->arch.iomap.bits);
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        bitmap_initialize(&task->arch.iomap, newmap, bits);
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        bitmap_initialize(&task->arch.iomap, newmap, bits);
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        /*
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        /*
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         * Mark the new range inaccessible.
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         * Mark the new range inaccessible.
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         */
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         */
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        bitmap_set_range(&task->arch.iomap, oldiomap.bits, bits - oldiomap.bits);
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        bitmap_set_range(&task->arch.iomap, oldiomap.bits,
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            bits - oldiomap.bits);
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        /*
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        /*
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         * In case there really existed smaller iomap,
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         * In case there really existed smaller iomap,
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         * copy its contents and deallocate it.
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         * copy its contents and deallocate it.
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         */    
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         */    
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        if (oldiomap.bits) {
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        if (oldiomap.bits) {
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            bitmap_copy(&task->arch.iomap, &oldiomap, oldiomap.bits);
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            bitmap_copy(&task->arch.iomap, &oldiomap,
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                oldiomap.bits);
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            free(oldiomap.map);
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            free(oldiomap.map);
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        }
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        }
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    }
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    }
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    /*
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    /*
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    if ((bits = TASK->arch.iomap.bits)) {
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    if ((bits = TASK->arch.iomap.bits)) {
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        bitmap_t iomap;
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        bitmap_t iomap;
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        task_t *task = TASK;
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        task_t *task = TASK;
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        ASSERT(TASK->arch.iomap.map);
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        ASSERT(TASK->arch.iomap.map);
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        bitmap_initialize(&iomap, CPU->arch.tss->iomap, TSS_IOMAP_SIZE * 8);
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        bitmap_initialize(&iomap, CPU->arch.tss->iomap,
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            TSS_IOMAP_SIZE * 8);
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        bitmap_copy(&iomap, &task->arch.iomap, task->arch.iomap.bits);
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        bitmap_copy(&iomap, &task->arch.iomap, task->arch.iomap.bits);
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        /*
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        /*
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         * It is safe to set the trailing eight bits because of the extra
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         * It is safe to set the trailing eight bits because of the
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         * convenience byte in TSS_IOMAP_SIZE.
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         * extra convenience byte in TSS_IOMAP_SIZE.
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         */
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         */
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        bitmap_set_range(&iomap, ALIGN_UP(TASK->arch.iomap.bits, 8), 8);
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        bitmap_set_range(&iomap, ALIGN_UP(TASK->arch.iomap.bits, 8), 8);
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    }
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    }
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    spinlock_unlock(&TASK->lock);
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    spinlock_unlock(&TASK->lock);
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