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/** @file
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/** @file
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 */
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 */
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#include <proc/thread.h>
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#include <proc/thread.h>
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#include <arch/proc/thread.h>
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#include <arch/proc/thread.h>
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#include <mm/frame.h>
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#include <mm/slab.h>
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#include <mm/page.h>
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#include <arch/mm/page.h>
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#include <arch/trap/regwin.h>
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#include <align.h>
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#include <align.h>
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void thr_constructor_arch(thread_t *t)
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void thr_constructor_arch(thread_t *t)
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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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void thr_destructor_arch(thread_t *t)
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void thr_destructor_arch(thread_t *t)
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{
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{
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    if (t->arch.uspace_window_buffer) {
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    if (t->arch.uspace_window_buffer) {
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        uintptr_t uw_buf = (uintptr_t) t->arch.uspace_window_buffer;
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        /*
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        /*
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         * Mind the possible alignment of the userspace window buffer
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         * Mind the possible alignment of the userspace window buffer
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         * belonging to a killed thread.
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         * belonging to a killed thread.
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         */
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         */
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        frame_free(KA2PA(ALIGN_DOWN((uintptr_t)
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        free((uint8_t *) ALIGN_DOWN(uw_buf, UWB_ALIGNMENT));
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            t->arch.uspace_window_buffer, PAGE_SIZE)));
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    }
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    }
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}
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}
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void thread_create_arch(thread_t *t)
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void thread_create_arch(thread_t *t)
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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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         * The thread needs userspace window buffer and the object
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         * The thread needs userspace window buffer and the object
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         * returned from the slab allocator doesn't have any.
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         * returned from the slab allocator doesn't have any.
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         */
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         */
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        t->arch.uspace_window_buffer = frame_alloc(ONE_FRAME, FRAME_KA);
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        t->arch.uspace_window_buffer = malloc(UWB_ASIZE, 0);
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    } else {
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    } else {
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        uintptr_t uw_buf = (uintptr_t) t->arch.uspace_window_buffer;
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        uintptr_t uw_buf = (uintptr_t) t->arch.uspace_window_buffer;
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        /*
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        /*
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         * Mind the possible alignment of the userspace window buffer
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         * Mind the possible alignment of the userspace window buffer
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         * belonging to a killed thread.
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         * belonging to a killed thread.
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         */
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         */
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        t->arch.uspace_window_buffer = (uint8_t *) ALIGN_DOWN(uw_buf,
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        t->arch.uspace_window_buffer = (uint8_t *) ALIGN_DOWN(uw_buf,
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            PAGE_SIZE);
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            UWB_ASIZE);
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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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 */
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 */