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#ifdef CONFIG_UDEBUG
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#ifdef CONFIG_UDEBUG
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/** Write directly into a page, bypassing area flags.
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/** Write directly into a page, bypassing area flags.
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 *
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 *
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 * This allows a debugger to write into a page that is mapped read-only
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 * This allows a debugger to write into a page that is mapped read-only
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 * (such as the text segment). Naturally, this is only possible if the
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 * (such as the text segment). Naturally, this can only be done if the
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 * correspoinding area is not shared and anonymous.
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 * correspoinding area is private (not shared) and anonymous.
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 *
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 *
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 * FIXME: doesn't take into account that it isn't a good idea to write
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 * If this is not the case, this function calls as_area_make_writeable()
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 * into the frame if the area is shared or isn't anonymous
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 * first.
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 */
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 */
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static int debug_write_inside_page(uintptr_t va, void *data, size_t n)
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static int debug_write_inside_page(uintptr_t va, void *data, size_t n)
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{
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{
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    uintptr_t page;
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    uintptr_t page;
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    pte_t *pte;
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    pte_t *pte;