mirror of
git://projects.qi-hardware.com/iris.git
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157 lines
4.1 KiB
Plaintext
157 lines
4.1 KiB
Plaintext
#pypp 0
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#ifndef _KERNEL_HH
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#define _KERNEL_HH
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#include "boot-programs/sos.h"
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#ifndef EXTERN
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#define EXTERN extern
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#endif
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#define NULL 0
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struct Object_base
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struct Page
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struct Thread
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struct Message
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struct Receiver
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struct Capability
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struct Memory
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#include "arch.hh"
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struct Object_base:
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// Next and previous object of any type in the same page.
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Object_base *prev_obj, *next_obj
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void free_obj (Memory *parent)
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inline bool is_free ()
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template <typename _T> //
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struct Object : public Object_base:
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// Next and previous object of the same type in any page.
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_T *prev, *next
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struct Free : public Object <Free>:
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// This marker is ~0. No other kernel structure may allow this value
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// at this point. It is used to recognize free chunks.
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unsigned marker
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bool Object_base::is_free ():
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return ((Free *)this)->marker == ~0
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struct Page : public Object <Page>:
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unsigned physical
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struct Thread : public Object <Thread>:
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Memory *address_space
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unsigned pc, sp
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Thread_arch arch
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Thread *schedule_prev, *schedule_next
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Receiver *receivers
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struct Message : public Object <Message>:
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Capability *capabilities[4]
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unsigned data[4]
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unsigned protected_data
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struct Receiver : public Object <Receiver>:
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Thread *owner
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Receiver *prev_owned, *next_owned
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Capability *capabilities
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Message *messages
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void own (Thread *o)
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void orphan ()
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struct Capability : public Object <Capability>:
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Receiver *target
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Capability *children
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Capability *sibling_prev, *sibling_next
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unsigned protected_data
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void invoke (unsigned d0, unsigned d1, unsigned d2, unsigned d3, Capability *c0, Capability *c1, Capability *c2, Capability *c3)
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void invalidate ()
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struct Cappage : public Object <Cappage>:
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Capability *page
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struct Memory : public Object <Memory>:
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Memory *parent
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Free *frees
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Page *pages
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Thread *threads
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Receiver *receivers
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Capability *capabilities
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Memory *memories
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unsigned limit, used
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Memory_arch arch
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inline bool map (Page *page, unsigned address, bool write)
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inline void unmap (Page *page, unsigned address)
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inline Page *get_mapping (unsigned address, bool *writable)
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// Allocation of pages.
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bool use ()
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void unuse ()
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unsigned palloc ()
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unsigned zalloc ()
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void pfree (unsigned page)
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void zfree (unsigned page)
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// Allocation routines for kernel structures
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void *search_free (unsigned size, void **first)
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Page *alloc_page ()
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Thread *alloc_thread ()
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Message *alloc_message (Capability *source)
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Receiver *alloc_receiver ()
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Capability *alloc_capability (Receiver *target, Capability **parent, unsigned protected_data)
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Memory *alloc_memory ()
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void free_page (Page *page)
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void free_thread (Thread *thread)
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void free_message (Message *message)
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void free_receiver (Receiver *receiver)
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void free_capability (Capability *capability)
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void free_memory (Memory *mem)
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Capability *find_capability (unsigned code)
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// Functions which can be called from assembly must not be mangled.
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extern "C":
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// Panic. n is sent over caps led. message is currently ignored.
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void panic (unsigned n, char const *message = "")
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// Debug: switch caps led
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void led (bool one, bool two, bool three)
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void dbg_sleep (unsigned ms)
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void schedule ()
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struct FreePage:
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FreePage *next
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EXTERN FreePage *zero_pages, *junk_pages
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EXTERN Memory top_memory
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EXTERN Thread *sleepers, *runners
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EXTERN Thread idle
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EXTERN Memory idle_memory
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EXTERN Page idle_page
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EXTERN Thread *first_scheduled
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EXTERN Thread *current
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// Defined in arch.cc
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void Thread_arch_init (Thread *thread)
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void Memory_arch_init (Memory *mem)
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void Memory_arch_free (Memory *mem)
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bool Memory_arch_map (Memory *mem, Page *page, unsigned address, bool write)
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void Memory_arch_unmap (Memory *mem, Page *page, unsigned address)
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Page *Memory_arch_get_mapping (Memory *mem, unsigned address, bool *writable)
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void arch_invoke ()
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void arch_schedule (Thread *previous, Thread *target)
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bool Memory::map (Page *page, unsigned address, bool write):
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return Memory_arch_map (this, page, address, write)
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void Memory::unmap (Page *page, unsigned address):
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Memory_arch_unmap (this, page, address)
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Page *Memory::get_mapping (unsigned address, bool *writable):
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return Memory_arch_get_mapping (this, address, writable)
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#endif
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