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author | Kartik Agaram <vc@akkartik.com> | 2020-01-01 18:22:19 -0800 |
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committer | Kartik Agaram <vc@akkartik.com> | 2020-01-01 18:42:48 -0800 |
commit | 65409d2312e702a48d3cf5b32479d25266bda3c3 (patch) | |
tree | 62a7262fce61f2302109246da4536ce6f8e9ef80 /tools/iso/kernel.soso/vmm.h | |
parent | a6da50ad30d2e1825575ffef497ab450a8f26e94 (diff) | |
download | mu-65409d2312e702a48d3cf5b32479d25266bda3c3.tar.gz |
5858
Move script to create a Soso boot image into a sub-directory. I'm trying to streamline newcomer attention to just a couple of use cases.
Diffstat (limited to 'tools/iso/kernel.soso/vmm.h')
-rw-r--r-- | tools/iso/kernel.soso/vmm.h | 48 |
1 files changed, 48 insertions, 0 deletions
diff --git a/tools/iso/kernel.soso/vmm.h b/tools/iso/kernel.soso/vmm.h new file mode 100644 index 00000000..f7955afb --- /dev/null +++ b/tools/iso/kernel.soso/vmm.h @@ -0,0 +1,48 @@ +#ifndef VMM_H +#define VMM_H + +#include "common.h" + +typedef struct Process Process; +typedef struct List List; + +extern uint32 *gKernelPageDirectory; + +extern uint8 gKernelPageHeapBitmap[]; + + +#define SET_PAGEFRAME_USED(bitmap, pageIndex) bitmap[((uint32) pageIndex)/8] |= (1 << (((uint32) pageIndex)%8)) +#define SET_PAGEFRAME_UNUSED(bitmap, p_addr) bitmap[((uint32) p_addr/PAGESIZE_4M)/8] &= ~(1 << (((uint32) p_addr/PAGESIZE_4M)%8)) +#define IS_PAGEFRAME_USED(bitmap, pageIndex) (bitmap[((uint32) pageIndex)/8] & (1 << (((uint32) pageIndex)%8))) + +#define SET_PAGEHEAP_USED(pageIndex) gKernelPageHeapBitmap[((uint32) pageIndex)/8] |= (1 << (((uint32) pageIndex)%8)) +#define SET_PAGEHEAP_UNUSED(p_addr) gKernelPageHeapBitmap[((uint32) p_addr/PAGESIZE_4K)/8] &= ~(1 << (((uint32) p_addr/PAGESIZE_4K)%8)) +#define IS_PAGEHEAP_USED(pageIndex) (gKernelPageHeapBitmap[((uint32) pageIndex)/8] & (1 << (((uint32) pageIndex)%8))) + +char* getPageFrame4M(); +void releasePageFrame4M(uint32 p_addr); + +uint32 *getPdFromReservedArea4K(); +void releasePdFromReservedArea4K(uint32 *); + +void initializeMemory(uint32 high_mem); + +uint32 *createPd(); +void destroyPd(uint32 *); +uint32 *copyPd(uint32* pd); + +BOOL addPageToPd(uint32* pd, char *v_addr, char *p_addr, int flags); +BOOL removePageFromPd(uint32* pd, char *v_addr, BOOL releasePageFrame); + +void enablePaging(); +void disablePaging(); + +uint32 getTotalPageCount(); +uint32 getUsedPageCount(); +uint32 getFreePageCount(); + +void initializeProcessMmap(Process* process); +void* mapMemory(Process* process, uint32 nBytes, uint32 pAddress, List* pAddressList); +BOOL unmapMemory(Process* process, uint32 nBytes, uint32 vAddress); + +#endif // VMM_H |