SuperHack

home *** CD-ROM | disk | FTP | other *** search

/ SuperHack / SuperHack CD.bin / CODING / WINDOWS / TVCACHE.ZIP / VCASM.ASM < prev next >

Wrap

Assembly Source File | 1996-01-05 | 6.7 KB | 396 lines

;====================================================================== ; ; VCASM.asm ; ; Copyright (c) 1995 Mark Russinovich and Bryce Cogswell ; ; This file contains the assembly language interface wrappers for ; tvcache. Note that register save/restores were determined ; many times through actual monitoring of the real vcache's usage. ; ;====================================================================== .386p NO_SEGMENTS=1 include vmm.inc include vsegment.inc .list VXD_LOCKED_DATA_SEG VXD_LOCKED_DATA_ENDS VXD_LOCKED_CODE_SEG extern _CTVCACHE_Get_Version : near extern _CTVCACHE_Register : near extern _CTVCACHE_GetSize : near extern _CTVCACHE_CheckAvail : near extern _CTVCACHE_FindBlock : near extern _CTVCACHE_FreeBlock : near extern _CTVCACHE_MakeMRU : near extern _CTVCACHE_Hold : near extern _CTVCACHE_Unhold : near extern _CTVCACHE_Enum : near extern _CTVCACHE_TestHold : near extern _CTVCACHE_GetStats : near extern _CTVCACHE_Deregister : near extern _CTVCACHE_SwapBuffers : near extern _CTVCACHE_RelinquishPage: near extern _CTVCACHE_UseThisPage : near extern _CTVCACHE_AdjustMinimum : near BeginProc _TVCache_Get_Version push ecx push edx call _CTVCACHE_Get_Version xor ebx, ebx clc pop edx pop ecx ret EndProc _TVCache_Get_Version BeginProc _TVCache_Register push ecx push edx push ecx ; nblocks push esi ; buffer discard proc call _CTVCACHE_Register add esp, 8 pop edx pop ecx ret ; eax = fsd id EndProc _TVCache_Register BeginProc _TVCache_GetSize push edi push esi push ebp mov ebp, esp sub esp, 8 ; create space for returns lea edx, [ebp-4] push edx ; pointer to minsize lea edx, [ebp-8] push edx ; pointer to maxsize movzx eax, ah push eax ; fsd id call _CTVCACHE_GetSize add esp, 3*4 ; eax = cursize pop edx ; maxsize pop ecx ; minsize pop ebp pop esi pop edi ret EndProc _TVCache_GetSize BeginProc _TVCache_CheckAvail push ecx push ecx movzx eax, ah push eax call _CTVCACHE_CheckAvail add esp, 8 pop ecx cmp eax, ecx ret EndProc _TVCache_CheckAvail BeginProc _TVCache_FindBlock push edx push ecx push ebp mov ebp, esp sub esp, 12 ; create space for returns lea edx, [ebp-4] push edx ; pointer to buffer address lea edx, [ebp-8] push edx ; pointer to cache locked lea edx, [ebp-12] push edx ; pointer to cache block push edi ; key 2 push ebx ; key 1 movzx edx, al ; flags push edx movzx edx, ah ; fsd id push edx call _CTVCACHE_FindBlock mov edx, eax add esp, 7*4 ; pop off fsdid, opt, key1, key2 pop esi ; cache block handle pop ecx ; block is locked (BOOL) pop eax ; buffer address mov esp, ebp pop ebp ; set up the flags cmp edx, 1 jnz notfound neg ecx ; clear zero flag if locked clc pop ecx pop edx ret notfound: neg ecx ; clear zero flag if locked stc pop ecx pop edx ret EndProc _TVCache_FindBlock BeginProc _TVCache_FreeBlock pusha push esi call _CTVCACHE_FreeBlock add esp, 4 popa ret EndProc _TVCache_FreeBlock BeginProc _TVCache_MakeMRU pusha push esi call _CTVCACHE_MakeMRU add esp, 4 popa ret EndProc _TVCache_MakeMRU BeginProc _TVCache_Hold pusha pushfd push esi call _CTVCACHE_Hold add esp, 4 popfd inc eax popa ret EndProc _TVCache_Hold BeginProc _TVCache_Unhold pusha pushfd push esi call _CTVCACHE_Unhold add esp, 4 popfd dec eax popa ret EndProc _TVCache_Unhold BeginProc _TVCache_Enum pusha push ebp ; ref 3 push ecx ; ref 2 push ebx ; ref 1 push edx ; callback function movzx eax, ah push eax ; fsd id call _CTVCACHE_Enum add esp, 20 popa ret EndProc _TVCache_Enum BeginProc _TVCache_TestHandle ret EndProc _TVCache_TestHandle BeginProc _TVCache_VerifySums ret EndProc _TVCache_VerifySums BeginProc _TVCache_RecalcSums ret EndProc _TVCache_RecalcSums BeginProc _TVCache_TestHold push ecx push edx push esi push edi push esi call _CTVCACHE_TestHold add esp, 4 or eax, eax pop edi pop esi pop edx pop ecx ret EndProc _TVCache_TestHold BeginProc _TVCache_GetStats push eax push ebp push esi mov ebp, esp sub esp, 16 lea eax, [ebp-4] ; discarded blocks push eax lea eax, [ebp-8] ; base address push eax lea eax, [ebp-12] ; hits push eax lea eax, [ebp-16] ; misses push eax call _CTVCACHE_GetStats add esp, 16 pop ebx ; misses pop ecx ; hits pop edx ; base pop edi ; discards mov esp, ebp pop esi pop ebp pop eax ret EndProc _TVCache_GetStats BeginProc _TVCache_Deregister pusha push eax call _CTVCACHE_Deregister add esp, 4 popa ret EndProc _TVCache_Deregister BeginProc _TVCache_AdjustMinimum movzx eax, ah ; fsd id push eax push ecx ; quota call _CTVCACHE_AdjustMinimum add esp, 8 cmp eax, 1 ret EndProc _TVCache_AdjustMinimum BeginProc _TVCache_SwapBuffers pusha push edi push esi call _CTVCACHE_SwapBuffers add esp, 8 cmp eax, 1 popa ret EndProc _TVCache_SwapBuffers BeginProc _TVCache_RelinquishPage push ecx push edx call _CTVCACHE_RelinquishPage pop edx pop ecx ret EndProc _TVCache_RelinquishPage BeginProc _TVCache_UseThisPage pusha push eax call _CTVCACHE_UseThisPage add esp, 4 popa ret EndProc _TVCache_UseThisPage ;---------------------------------------------------------------------- ; ; EnumCallback ; ; This is the only non-API wrapper. It is used to call the specified ; callback during enum functions. ; ;---------------------------------------------------------------------- Public EnumCallback EnumCallback PROC C USES eax ebx ecx edx esi edi ebp, callback: DWORD, blockid : DWORD, refebx : DWORD, refecx : DWORD, refebp : DWORD, hold : DWORD mov esi, blockid mov edx, callback mov edi, hold mov eax, refebx mov ebx, [eax] mov eax, refecx mov ecx, [eax] mov eax, refebp push ebp mov ebp, [eax] cmp edi, 1 ; make the call call edx mov edx, ebp pop ebp mov eax, refebp mov [eax], edx mov eax, refebx mov [eax], ebx mov eax, refecx mov [eax], ecx ret EnumCallback ENDP BeginProc __TVCache_CreateLookupCache xor eax, eax ret EndProc __TVCache_CreateLookupCache BeginProc __TVCache_CloseLookupCache ret EndProc __TVCache_CloseLookupCache BeginProc __TVCache_DeleteLookupCache ret EndProc __TVCache_DeleteLookupCache BeginProc __TVCache_Lookup ret EndProc __TVCache_Lookup BeginProc __TVCache_UpdateLookup ret EndProc __TVCache_UpdateLookup VXD_LOCKED_CODE_ENDS end