paging.c File Reference

#include <vmm/vmm.h>
#include <lib/kprintf.h>
#include <lib/kmalloc.h>
#include <ubixos/types.h>
#include <ubixos/kpanic.h>
#include <ubixos/sched.h>
#include <ubixos/spinlock.h>
#include <string.h>
#include <assert.h>

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Functions
int	mmap (struct thread *td, struct mmap_args *uap)
int	munmap (struct thread *td, struct munmap_args *uap)
int	obreak (struct thread *td, struct obreak_args *uap)
int	vmm_cleanVirtualSpace (uint32_t addr)
void *	vmm_getFreeMallocPage (uInt16 count)
int	vmm_pagingInit ()
int	vmm_remapPage (uInt32 source, uInt32 dest, uInt16 perms)
int	vmmClearVirtualPage (uInt32 pageAddr)
void *	vmmGetFreeKernelPage (pidType pid, uInt16 count)
void *	vmmMapFromTask (pidType pid, void *ptr, uInt32 size)
Variables
static spinLock_t	fkpSpinLock = SPIN_LOCK_INITIALIZER
uInt32 *	kernelPageDirectory = 0x0
static spinLock_t	rmpSpinLock = SPIN_LOCK_INITIALIZER

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Function Documentation

int mmap	(	struct thread *	td,
		struct mmap_args *	uap
	)

Definition at line 453 of file paging.c.

References _current, mmap_args::addr, mmap_args::fd, mmap_args::flags, taskStruct::id, kprintf(), mmap_args::len, mmap_args::pad, mmap_args::pos, mmap_args::prot, thread::td_retval, VM_TASK, vmmGetFreeVirtualPage(), and x1000.

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int munmap	(	struct thread *	td,
		struct munmap_args *	uap
	)

Definition at line 516 of file paging.c.

References kprintf().

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int obreak	(	struct thread *	td,
		struct obreak_args *	uap
	)

Definition at line 478 of file paging.c.

References _current, btoc, ctob, taskStruct::id, K_PANIC, kprintf(), obreak_args::nsize, PAGE_DEFAULT, round_page, thread::vm_daddr, thread::vm_dsize, vmm_remapPage(), and vmmFindFreePage().

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int vmm_cleanVirtualSpace

(

uint32_t

addr

)

Definition at line 522 of file paging.c.

References kprintf(), PAGE_COW, PAGE_PRESENT, PAGE_STACK, parentPageDirAddr, tablesBaseAddress, and x1000.

Referenced by sysExec().

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void* vmm_getFreeMallocPage

(

uInt16

count

)

Definition at line 401 of file paging.c.

References fkpSpinLock, K_PANIC, KERNEL_PAGE_DEFAULT, spinLock(), spinUnlock(), sysID, tablesBaseAddress, vmm_remapPage(), vmmClearVirtualPage(), vmmFindFreePage(), and x1000.

Referenced by getEmptyDesc().

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int vmm_pagingInit

(

)

Definition at line 59 of file paging.c.

References _vmm_pageFault, K_PANIC, KERNEL_PAGE_DEFAULT, kernelPageDirectory, kprintf(), memset(), numPages, pageEntries, sysID, vmm_remapPage(), vmmFindFreePage(), vmmMemoryMap, vmmMemoryMapAddr, x1, and x1000.

Referenced by vmm_init().

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int vmm_remapPage	(	uInt32	source,
		uInt32	dest,
		uInt16	perms
	)

Definition at line 160 of file paging.c.

References _current, freePage(), taskStruct::id, K_PANIC, KERNEL_PAGE_DEFAULT, kprintf(), PAGE_COW, PAGE_DEFAULT, PAGE_PRESENT, PAGE_STACK, pageEntries, parentPageDirAddr, rmpSpinLock, spinLock(), spinUnlock(), tablesBaseAddress, vmmFindFreePage(), and x1000.

Referenced by elf_loadfile(), execFile(), kmod_load(), ldEnable(), obreak(), sys_exec(), sysExec(), vmm_getFreeMallocPage(), vmm_pagingInit(), vmmGetFreeKernelPage(), vmmGetFreePage(), vmmGetFreeVirtualPage(), and vmmMapFromTask().

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int vmmClearVirtualPage

(

uInt32

pageAddr

)

Definition at line 314 of file paging.c.

References pageEntries.

Referenced by vmm_getFreeMallocPage(), vmmGetFreeKernelPage(), vmmGetFreePage(), and vmmGetFreeVirtualPage().

void* vmmGetFreeKernelPage	(	pidType	pid,
		uInt16	count
	)

Definition at line 253 of file paging.c.

References fkpSpinLock, K_PANIC, KERNEL_PAGE_DEFAULT, spinLock(), spinUnlock(), tablesBaseAddress, vmm_remapPage(), vmmClearVirtualPage(), and vmmFindFreePage().

Referenced by vmmCopyVirtualSpace().

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void* vmmMapFromTask	(	pidType	pid,
		void *	ptr,
		uInt32	size
	)

Definition at line 332 of file paging.c.

References _current, tssStruct::cr3, K_PANIC, KERNEL_PAGE_DEFAULT, taskStruct::oInfo, schedFindTask(), tablesBaseAddress, taskStruct::tss, vmm_remapPage(), vmmUnmapPage(), osInfo::vmStart, and x1000.

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Variable Documentation

spinLock_t fkpSpinLock = SPIN_LOCK_INITIALIZER [static]

Definition at line 43 of file paging.c.

Referenced by vmm_getFreeMallocPage(), and vmmGetFreeKernelPage().

uInt32* kernelPageDirectory = 0x0

Definition at line 40 of file paging.c.

Referenced by _int8(), execFile(), execThread(), idt_init(), and vmm_pagingInit().

spinLock_t rmpSpinLock = SPIN_LOCK_INITIALIZER [static]

Definition at line 44 of file paging.c.

Referenced by vmm_remapPage().

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