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Sweden-Number/msdos/vxd.c

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/*
* VxD emulation
*
* Copyright 1995 Anand Kumria
*/
#include <fcntl.h>
#include <memory.h>
#include "windows.h"
#include "winbase.h"
#include "msdos.h"
#include "miscemu.h"
#include "selectors.h"
#include "module.h"
#include "task.h"
#include "process.h"
#include "file.h"
#include "debug.h"
#define VXD_BARF(context,name) \
DUMP( "vxd %s: unknown/not implemented parameters:\n" \
"vxd %s: AX %04x, BX %04x, CX %04x, DX %04x, " \
"SI %04x, DI %04x, DS %04x, ES %04x\n", \
(name), (name), AX_reg(context), BX_reg(context), \
CX_reg(context), DX_reg(context), SI_reg(context), \
DI_reg(context), (WORD)DS_reg(context), (WORD)ES_reg(context) )
static WORD VXD_WinVersion(void)
{
WORD version = LOWORD(GetVersion16());
return (version >> 8) | (version << 8);
}
/***********************************************************************
* VXD_VMM
*/
void VXD_VMM ( CONTEXT *context )
{
unsigned service = AX_reg(context);
TRACE(vxd,"[%04x] VMM \n", (UINT16)service);
switch(service)
{
case 0x0000: /* version */
AX_reg(context) = VXD_WinVersion();
RESET_CFLAG(context);
break;
case 0x026d: /* Get_Debug_Flag '/m' */
case 0x026e: /* Get_Debug_Flag '/n' */
AL_reg(context) = 0;
RESET_CFLAG(context);
break;
default:
VXD_BARF( context, "VMM" );
}
}
/***********************************************************************
* VXD_PageFile
*/
void WINAPI VXD_PageFile( CONTEXT *context )
{
unsigned service = AX_reg(context);
/* taken from Ralf Brown's Interrupt List */
TRACE(vxd,"[%04x] PageFile\n", (UINT16)service );
switch(service)
{
case 0x00: /* get version, is this windows version? */
TRACE(vxd,"returning version\n");
AX_reg(context) = VXD_WinVersion();
RESET_CFLAG(context);
break;
case 0x01: /* get swap file info */
TRACE(vxd,"VxD PageFile: returning swap file info\n");
AX_reg(context) = 0x00; /* paging disabled */
ECX_reg(context) = 0; /* maximum size of paging file */
/* FIXME: do I touch DS:SI or DS:DI? */
RESET_CFLAG(context);
break;
case 0x02: /* delete permanent swap on exit */
TRACE(vxd,"VxD PageFile: supposed to delete swap\n");
RESET_CFLAG(context);
break;
case 0x03: /* current temporary swap file size */
TRACE(vxd,"VxD PageFile: what is current temp. swap size\n");
RESET_CFLAG(context);
break;
case 0x04: /* read or write?? INTERRUP.D */
case 0x05: /* cancel?? INTERRUP.D */
case 0x06: /* test I/O valid INTERRUP.D */
default:
VXD_BARF( context, "pagefile" );
break;
}
}
/***********************************************************************
* VXD_Reboot
*/
void VXD_Reboot ( CONTEXT *context )
{
unsigned service = AX_reg(context);
TRACE(vxd,"[%04x] VMM \n", (UINT16)service);
switch(service)
{
case 0x0000: /* version */
AX_reg(context) = VXD_WinVersion();
RESET_CFLAG(context);
break;
default:
VXD_BARF( context, "REBOOT" );
}
}
/***********************************************************************
* VXD_VDD
*/
void VXD_VDD ( CONTEXT *context )
{
unsigned service = AX_reg(context);
TRACE(vxd,"[%04x] VDD \n", (UINT16)service);
switch(service)
{
case 0x0000: /* version */
AX_reg(context) = VXD_WinVersion();
RESET_CFLAG(context);
break;
default:
VXD_BARF( context, "VDD" );
}
}
/***********************************************************************
* VXD_VMD
*/
void VXD_VMD ( CONTEXT *context )
{
unsigned service = AX_reg(context);
TRACE(vxd,"[%04x] VMD \n", (UINT16)service);
switch(service)
{
case 0x0000: /* version */
AX_reg(context) = VXD_WinVersion();
RESET_CFLAG(context);
break;
default:
VXD_BARF( context, "VMD" );
}
}
/***********************************************************************
* VXD_Shell
*/
void WINAPI VXD_Shell( CONTEXT *context )
{
unsigned service = DX_reg(context);
TRACE(vxd,"[%04x] Shell\n", (UINT16)service);
switch (service) /* Ralf Brown says EDX, but I use DX instead */
{
case 0x0000:
TRACE(vxd,"returning version\n");
AX_reg(context) = VXD_WinVersion();
EBX_reg(context) = 1; /* system VM Handle */
break;
case 0x0001:
case 0x0002:
case 0x0003:
case 0x0004:
case 0x0005:
VXD_BARF( context, "shell" );
break;
case 0x0006: /* SHELL_Get_VM_State */
TRACE(vxd,"VxD Shell: returning VM state\n");
/* Actually we don't, not yet. We have to return a structure
* and I am not to sure how to set it up and return it yet,
* so for now let's do nothing. I can (hopefully) get this
* by the next release
*/
/* RESET_CFLAG(context); */
break;
case 0x0007:
case 0x0008:
case 0x0009:
case 0x000A:
case 0x000B:
case 0x000C:
case 0x000D:
case 0x000E:
case 0x000F:
case 0x0010:
case 0x0011:
case 0x0012:
case 0x0013:
case 0x0014:
case 0x0015:
case 0x0016:
VXD_BARF( context, "SHELL" );
break;
/* the new Win95 shell API */
case 0x0100: /* get version */
AX_reg(context) = VXD_WinVersion();
break;
case 0x0104: /* retrieve Hook_Properties list */
case 0x0105: /* call Hook_Properties callbacks */
VXD_BARF( context, "SHELL" );
break;
case 0x0106: /* install timeout callback */
TRACE( vxd, "VxD Shell: ignoring shell callback (%ld sec.)\n",
EBX_reg( context ) );
SET_CFLAG(context);
break;
case 0x0107: /* get version of any VxD */
default:
VXD_BARF( context, "SHELL" );
break;
}
}
/***********************************************************************
* VXD_Comm
*/
void WINAPI VXD_Comm( CONTEXT *context )
{
unsigned service = AX_reg(context);
TRACE(vxd,"[%04x] Comm\n", (UINT16)service);
switch (service)
{
case 0x0000: /* get version */
TRACE(vxd,"returning version\n");
AX_reg(context) = VXD_WinVersion();
RESET_CFLAG(context);
break;
case 0x0001: /* set port global */
case 0x0002: /* get focus */
case 0x0003: /* virtualise port */
default:
VXD_BARF( context, "comm" );
}
}
/***********************************************************************
* VXD_Timer
*/
void VXD_Timer( CONTEXT *context )
{
unsigned service = AX_reg(context);
TRACE(vxd,"[%04x] Virtual Timer\n", (UINT16)service);
switch(service)
{
case 0x0000: /* version */
AX_reg(context) = VXD_WinVersion();
RESET_CFLAG(context);
break;
case 0x0100: /* clock tick time, in 840nsecs */
EAX_reg(context) = GetTickCount();
EDX_reg(context) = EAX_reg(context) >> 22;
EAX_reg(context) <<= 10; /* not very precise */
break;
case 0x0101: /* current Windows time, msecs */
case 0x0102: /* current VM time, msecs */
EAX_reg(context) = GetTickCount();
break;
default:
VXD_BARF( context, "VTD" );
}
}
/***********************************************************************
* VXD_TimerAPI
*/
static DWORD System_Time = 0;
static WORD System_Time_Selector = 0;
static void System_Time_Tick( WORD timer ) { System_Time += 55; }
void VXD_TimerAPI ( CONTEXT *context )
{
unsigned service = AX_reg(context);
TRACE(vxd,"[%04x] TimerAPI \n", (UINT16)service);
switch(service)
{
case 0x0000: /* version */
AX_reg(context) = VXD_WinVersion();
RESET_CFLAG(context);
break;
case 0x0009: /* get system time selector */
if ( !System_Time_Selector )
{
System_Time_Selector = SELECTOR_AllocBlock( &System_Time, sizeof(DWORD),
SEGMENT_DATA, FALSE, TRUE );
CreateSystemTimer( 55, System_Time_Tick );
}
AX_reg(context) = System_Time_Selector;
RESET_CFLAG(context);
break;
default:
VXD_BARF( context, "VTDAPI" );
}
}
/***********************************************************************
* VXD_ConfigMG
*/
void VXD_ConfigMG ( CONTEXT *context )
{
unsigned service = AX_reg(context);
TRACE(vxd,"[%04x] ConfigMG \n", (UINT16)service);
switch(service)
{
case 0x0000: /* version */
AX_reg(context) = VXD_WinVersion();
RESET_CFLAG(context);
break;
default:
VXD_BARF( context, "CONFIGMG" );
}
}
/***********************************************************************
* VXD_Enable
*/
void VXD_Enable ( CONTEXT *context )
{
unsigned service = AX_reg(context);
TRACE(vxd,"[%04x] Enable \n", (UINT16)service);
switch(service)
{
case 0x0000: /* version */
AX_reg(context) = VXD_WinVersion();
RESET_CFLAG(context);
break;
default:
VXD_BARF( context, "ENABLE" );
}
}
/***********************************************************************
* VXD_APM
*/
void VXD_APM ( CONTEXT *context )
{
unsigned service = AX_reg(context);
TRACE(vxd,"[%04x] APM \n", (UINT16)service);
switch(service)
{
case 0x0000: /* version */
AX_reg(context) = VXD_WinVersion();
RESET_CFLAG(context);
break;
default:
VXD_BARF( context, "APM" );
}
}
/***********************************************************************
* VXD_Win32s
*
* This is an implementation of the services of the Win32s VxD.
* Since official documentation of these does not seem to be available,
* certain arguments of some of the services remain unclear.
*
* FIXME: The following services are currently unimplemented:
* Exception handling (0x01, 0x1C)
* Debugger support (0x0C, 0x14, 0x17)
* Low-level memory access (0x02, 0x03, 0x0A, 0x0B)
* Memory Statistics (0x1B)
*
*
* We have a specific problem running Win32s on Linux (and probably also
* the other x86 unixes), since Win32s tries to allocate its main 'flat
* code/data segment' selectors with a base of 0xffff0000 (and limit 4GB).
* The rationale for this seems to be that they want one the one hand to
* be able to leave the Win 3.1 memory (starting with the main DOS memory)
* at linear address 0, but want at other hand to have offset 0 of the
* flat data/code segment point to an unmapped page (to catch NULL pointer
* accesses). Hence they allocate the flat segments with a base of 0xffff0000
* so that the Win 3.1 memory area at linear address zero shows up in the
* flat segments at offset 0x10000 (since linear addresses wrap around at
* 4GB). To compensate for that discrepancy between flat segment offsets
* and plain linear addresses, all flat pointers passed between the 32-bit
* and the 16-bit parts of Win32s are shifted by 0x10000 in the appropriate
* direction by the glue code (mainly) in W32SKRNL and WIN32S16.
*
* The problem for us is now that Linux does not allow a LDT selector with
* base 0xffff0000 to be created, since it would 'see' a part of the kernel
* address space. To address this problem we introduce *another* offset:
* We add 0x10000 to every linear address we get as an argument from Win32s.
* This means especially that the flat code/data selectors get actually
* allocated with base 0x0, so that flat offsets and (real) linear addresses
* do again agree! In fact, every call e.g. of a Win32s VxD service now
* has all pointer arguments (which are offsets in the flat data segement)
* first reduced by 0x10000 by the W32SKRNL glue code, and then again
* increased by 0x10000 by *our* code.
*
* Note that to keep everything consistent, this offset has to be applied by
* every Wine function that operates on 'linear addresses' passed to it by
* Win32s. Fortunately, since Win32s does not directly call any Wine 32-bit
* API routines, this affects only two locations: this VxD and the DPMI
* handler. (NOTE: Should any Win32s application pass a linear address to
* any routine apart from those, e.g. some other VxD handler, that code
* would have to take the offset into account as well!)
*
* The application of the offset is triggered by marking the current process
* as a Win32s process by setting the PDB32_WIN32S_PROC flag in the process
* database. This is done the first time any application calls the GetVersion()
* service of the Win32s VxD. (Note that the flag is never removed.)
*
*/
void VXD_Win32s( CONTEXT *context )
{
switch (AX_reg(context))
{
case 0x0000: /* Get Version */
/*
* Input: None
*
* Output: EAX: LoWord: Win32s Version (1.30)
* HiWord: VxD Version (200)
*
* EBX: Build (172)
*
* ECX: ??? (1)
*
* EDX: Debugging Flags
*
* EDI: Error Flag
* 0 if OK,
* 1 if VMCPD VxD not found
*/
TRACE(vxd, "GetVersion()\n");
EAX_reg(context) = VXD_WinVersion() | (200 << 16);
EBX_reg(context) = 0;
ECX_reg(context) = 0;
EDX_reg(context) = 0;
EDI_reg(context) = 0;
/*
* If this is the first time we are called for this process,
* hack the memory image of WIN32S16 so that it doesn't try
* to access the GDT directly ...
*
* The first code segment of WIN32S16 (version 1.30) contains
* an unexported function somewhere between the exported functions
* SetFS and StackLinearToSegmented that tries to find a selector
* in the LDT that maps to the memory image of the LDT itself.
* If it succeeds, it stores this selector into a global variable
* which will be used to speed up execution by using this selector
* to modify the LDT directly instead of using the DPMI calls.
*
* To perform this search of the LDT, this function uses the
* sgdt and sldt instructions to find the linear address of
* the (GDT and then) LDT. While those instructions themselves
* execute without problem, the linear address that sgdt returns
* points (at least under Linux) to the kernel address space, so
* that any subsequent access leads to a segfault.
*
* Fortunately, WIN32S16 still contains as a fallback option the
* mechanism of using DPMI calls to modify LDT selectors instead
* of direct writes to the LDT. Thus we can circumvent the problem
* by simply replacing the first byte of the offending function
* with an 'retf' instruction. This means that the global variable
* supposed to contain the LDT alias selector will remain zero,
* and hence WIN32S16 will fall back to using DPMI calls.
*
* The heuristic we employ to _find_ that function is as follows:
* We search between the addresses of the exported symbols SetFS
* and StackLinearToSegmented for the byte sequence '0F 01 04'
* (this is the opcode of 'sgdt [si]'). We then search backwards
* from this address for the last occurrance of 'CB' (retf) that marks
* the end of the preceeding function. The following byte (which
* should now be the first byte of the function we are looking for)
* will be replaced by 'CB' (retf).
*
* This heuristic works for the retail as well as the debug version
* of Win32s version 1.30. For versions earlier than that this
* hack should not be necessary at all, since the whole mechanism
* ('PERF130') was introduced only in 1.30 to improve the overall
* performance of Win32s.
*/
if (!(PROCESS_Current()->flags & PDB32_WIN32S_PROC))
{
HMODULE16 hModule = GetModuleHandle16("win32s16");
SEGPTR func1 = (SEGPTR)WIN32_GetProcAddress16(hModule, "SetFS");
SEGPTR func2 = (SEGPTR)WIN32_GetProcAddress16(hModule,
"StackLinearToSegmented");
if ( hModule && func1 && func2
&& SELECTOROF(func1) == SELECTOROF(func2))
{
BYTE *start = PTR_SEG_TO_LIN(func1);
BYTE *end = PTR_SEG_TO_LIN(func2);
BYTE *p, *retv = NULL;
int found = 0;
for (p = start; p < end; p++)
if (*p == 0xCB) found = 0, retv = p;
else if (*p == 0x0F) found = 1;
else if (*p == 0x01 && found == 1) found = 2;
else if (*p == 0x04 && found == 2) { found = 3; break; }
else found = 0;
if (found == 3 && retv)
{
TRACE(vxd, "PERF130 hack: "
"Replacing byte %02X at offset %04X:%04X\n",
*(retv+1), SELECTOROF(func1),
OFFSETOF(func1) + retv+1-start);
*(retv+1) = (BYTE)0xCB;
}
}
}
/*
* Mark process as Win32s, so that subsequent DPMI calls
* will perform the W32S_APP2WINE/W32S_WINE2APP address shift.
*/
PROCESS_Current()->flags |= PDB32_WIN32S_PROC;
break;
case 0x0001: /* Install Exception Handling */
/*
* Input: EBX: Flat address of W32SKRNL Exception Data
*
* ECX: LoWord: Flat Code Selector
* HiWord: Flat Data Selector
*
* EDX: Flat address of W32SKRNL Exception Handler
* (this is equal to W32S_BackTo32 + 0x40)
*
* ESI: SEGPTR KERNEL.HASGPHANDLER
*
* EDI: SEGPTR phCurrentTask (KERNEL.THHOOK + 0x10)
*
* Output: EAX: 0 if OK
*/
TRACE(vxd, "[0001] EBX=%lx ECX=%lx EDX=%lx ESI=%lx EDI=%lx\n",
EBX_reg(context), ECX_reg(context), EDX_reg(context),
ESI_reg(context), EDI_reg(context));
/* FIXME */
EAX_reg(context) = 0;
break;
case 0x0002: /* Set Page Access Flags */
/*
* Input: EBX: New access flags
* Bit 2: User Page if set, Supervisor Page if clear
* Bit 1: Read-Write if set, Read-Only if clear
*
* ECX: Size of memory area to change
*
* EDX: Flat start address of memory area
*
* Output: EAX: Size of area changed
*/
TRACE(vxd, "[0002] EBX=%lx ECX=%lx EDX=%lx\n",
EBX_reg(context), ECX_reg(context), EDX_reg(context));
/* FIXME */
EAX_reg(context) = ECX_reg(context);
break;
case 0x0003: /* Get Page Access Flags */
/*
* Input: EDX: Flat address of page to query
*
* Output: EAX: Page access flags
* Bit 2: User Page if set, Supervisor Page if clear
* Bit 1: Read-Write if set, Read-Only if clear
*/
TRACE(vxd, "[0003] EDX=%lx\n", EDX_reg(context));
/* FIXME */
EAX_reg(context) = 6;
break;
case 0x0004: /* Map Module */
/*
* Input: ECX: IMTE (offset in Module Table) of new module
*
* EDX: Flat address of Win32s Module Table
*
* Output: EAX: 0 if OK
*/
if (!EDX_reg(context) || CX_reg(context) == 0xFFFF)
{
TRACE(vxd, "MapModule: Initialization call\n");
EAX_reg(context) = 0;
}
else
{
/*
* Structure of a Win32s Module Table Entry:
*/
struct Win32sModule
{
DWORD flags;
DWORD flatBaseAddr;
LPCSTR moduleName;
LPCSTR pathName;
LPCSTR unknown;
LPBYTE baseAddr;
DWORD hModule;
DWORD relocDelta;
};
/*
* Note: This function should set up a demand-paged memory image
* of the given module. Since mmap does not allow file offsets
* not aligned at 1024 bytes, we simply load the image fully
* into memory.
*/
struct Win32sModule *moduleTable =
(struct Win32sModule *)W32S_APP2WINE(EDX_reg(context), W32S_OFFSET);
struct Win32sModule *module = moduleTable + ECX_reg(context);
IMAGE_NT_HEADERS *nt_header = PE_HEADER(module->baseAddr);
IMAGE_SECTION_HEADER *pe_seg = PE_SECTIONS(module->baseAddr);
HFILE32 image = FILE_Open(module->pathName, O_RDONLY,0);
BOOL32 error = (image == INVALID_HANDLE_VALUE32);
UINT32 i;
TRACE(vxd, "MapModule: Loading %s\n", module->pathName);
for (i = 0;
!error && i < nt_header->FileHeader.NumberOfSections;
i++, pe_seg++)
if(!(pe_seg->Characteristics & IMAGE_SCN_CNT_UNINITIALIZED_DATA))
{
DWORD off = pe_seg->PointerToRawData;
DWORD len = pe_seg->SizeOfRawData;
LPBYTE addr = module->baseAddr + pe_seg->VirtualAddress;
TRACE(vxd, "MapModule: "
"Section %d at %08lx from %08lx len %08lx\n",
i, (DWORD)addr, off, len);
if ( _llseek32(image, off, SEEK_SET) != off
|| _lread32(image, addr, len) != len)
error = TRUE;
}
_lclose32(image);
if (error)
ERR(vxd, "MapModule: Unable to load %s\n", module->pathName);
else if (module->relocDelta != 0)
{
IMAGE_DATA_DIRECTORY *dir = nt_header->OptionalHeader.DataDirectory
+ IMAGE_DIRECTORY_ENTRY_BASERELOC;
IMAGE_BASE_RELOCATION *r = (IMAGE_BASE_RELOCATION *)
(dir->Size? module->baseAddr + dir->VirtualAddress : 0);
TRACE(vxd, "MapModule: Reloc delta %08lx\n", module->relocDelta);
while (r && r->VirtualAddress)
{
LPBYTE page = module->baseAddr + r->VirtualAddress;
int count = (r->SizeOfBlock - 8) / 2;
TRACE(vxd, "MapModule: %d relocations for page %08lx\n",
count, (DWORD)page);
for(i = 0; i < count; i++)
{
int offset = r->TypeOffset[i] & 0xFFF;
int type = r->TypeOffset[i] >> 12;
switch(type)
{
case IMAGE_REL_BASED_ABSOLUTE:
break;
case IMAGE_REL_BASED_HIGH:
*(WORD *)(page+offset) += HIWORD(module->relocDelta);
break;
case IMAGE_REL_BASED_LOW:
*(WORD *)(page+offset) += LOWORD(module->relocDelta);
break;
case IMAGE_REL_BASED_HIGHLOW:
*(DWORD*)(page+offset) += module->relocDelta;
break;
default:
WARN(vxd, "MapModule: Unsupported fixup type\n");
break;
}
}
r = (IMAGE_BASE_RELOCATION *)((LPBYTE)r + r->SizeOfBlock);
}
}
EAX_reg(context) = 0;
RESET_CFLAG(context);
}
break;
case 0x0005: /* UnMap Module */
/*
* Input: EDX: Flat address of module image
*
* Output: EAX: 1 if OK
*/
TRACE(vxd, "UnMapModule: %lx\n", (DWORD)W32S_APP2WINE(EDX_reg(context), W32S_OFFSET));
/* As we didn't map anything, there's nothing to unmap ... */
EAX_reg(context) = 1;
break;
case 0x0006: /* VirtualAlloc */
/*
* Input: ECX: Current Process
*
* EDX: Flat address of arguments on stack
*
* DWORD *retv [out] Flat base address of allocated region
* LPVOID base [in] Flat address of region to reserve/commit
* DWORD size [in] Size of region
* DWORD type [in] Type of allocation
* DWORD prot [in] Type of access protection
*
* Output: EAX: NtStatus
*/
{
DWORD *stack = (DWORD *)W32S_APP2WINE(EDX_reg(context), W32S_OFFSET);
DWORD *retv = (DWORD *)W32S_APP2WINE(stack[0], W32S_OFFSET);
LPVOID base = (LPVOID) W32S_APP2WINE(stack[1], W32S_OFFSET);
DWORD size = stack[2];
DWORD type = stack[3];
DWORD prot = stack[4];
DWORD result;
TRACE(vxd, "VirtualAlloc(%lx, %lx, %lx, %lx, %lx)\n",
(DWORD)retv, (DWORD)base, size, type, prot);
if (type & 0x80000000)
{
WARN(vxd, "VirtualAlloc: strange type %lx\n", type);
type &= 0x7fffffff;
}
if (!base && (type & MEM_COMMIT) && prot == PAGE_READONLY)
{
WARN(vxd, "VirtualAlloc: NLS hack, allowing write access!\n");
prot = PAGE_READWRITE;
}
result = (DWORD)VirtualAlloc(base, size, type, prot);
if (W32S_WINE2APP(result, W32S_OFFSET))
*retv = W32S_WINE2APP(result, W32S_OFFSET),
EAX_reg(context) = STATUS_SUCCESS;
else
*retv = 0,
EAX_reg(context) = STATUS_NO_MEMORY; /* FIXME */
}
break;
case 0x0007: /* VirtualFree */
/*
* Input: ECX: Current Process
*
* EDX: Flat address of arguments on stack
*
* DWORD *retv [out] TRUE if success, FALSE if failure
* LPVOID base [in] Flat address of region
* DWORD size [in] Size of region
* DWORD type [in] Type of operation
*
* Output: EAX: NtStatus
*/
{
DWORD *stack = (DWORD *)W32S_APP2WINE(EDX_reg(context), W32S_OFFSET);
DWORD *retv = (DWORD *)W32S_APP2WINE(stack[0], W32S_OFFSET);
LPVOID base = (LPVOID) W32S_APP2WINE(stack[1], W32S_OFFSET);
DWORD size = stack[2];
DWORD type = stack[3];
DWORD result;
TRACE(vxd, "VirtualFree(%lx, %lx, %lx, %lx)\n",
(DWORD)retv, (DWORD)base, size, type);
result = VirtualFree(base, size, type);
if (result)
*retv = TRUE,
EAX_reg(context) = STATUS_SUCCESS;
else
*retv = FALSE,
EAX_reg(context) = STATUS_NO_MEMORY; /* FIXME */
}
break;
case 0x0008: /* VirtualProtect */
/*
* Input: ECX: Current Process
*
* EDX: Flat address of arguments on stack
*
* DWORD *retv [out] TRUE if success, FALSE if failure
* LPVOID base [in] Flat address of region
* DWORD size [in] Size of region
* DWORD new_prot [in] Desired access protection
* DWORD *old_prot [out] Previous access protection
*
* Output: EAX: NtStatus
*/
{
DWORD *stack = (DWORD *)W32S_APP2WINE(EDX_reg(context), W32S_OFFSET);
DWORD *retv = (DWORD *)W32S_APP2WINE(stack[0], W32S_OFFSET);
LPVOID base = (LPVOID) W32S_APP2WINE(stack[1], W32S_OFFSET);
DWORD size = stack[2];
DWORD new_prot = stack[3];
DWORD *old_prot = (DWORD *)W32S_APP2WINE(stack[4], W32S_OFFSET);
DWORD result;
TRACE(vxd, "VirtualProtect(%lx, %lx, %lx, %lx, %lx)\n",
(DWORD)retv, (DWORD)base, size, new_prot, (DWORD)old_prot);
result = VirtualProtect(base, size, new_prot, old_prot);
if (result)
*retv = TRUE,
EAX_reg(context) = STATUS_SUCCESS;
else
*retv = FALSE,
EAX_reg(context) = STATUS_NO_MEMORY; /* FIXME */
}
break;
case 0x0009: /* VirtualQuery */
/*
* Input: ECX: Current Process
*
* EDX: Flat address of arguments on stack
*
* DWORD *retv [out] Nr. bytes returned
* LPVOID base [in] Flat address of region
* LPMEMORY_BASIC_INFORMATION info [out] Info buffer
* DWORD len [in] Size of buffer
*
* Output: EAX: NtStatus
*/
{
DWORD *stack = (DWORD *)W32S_APP2WINE(EDX_reg(context), W32S_OFFSET);
DWORD *retv = (DWORD *)W32S_APP2WINE(stack[0], W32S_OFFSET);
LPVOID base = (LPVOID) W32S_APP2WINE(stack[1], W32S_OFFSET);
LPMEMORY_BASIC_INFORMATION info =
(LPMEMORY_BASIC_INFORMATION)W32S_APP2WINE(stack[2], W32S_OFFSET);
DWORD len = stack[3];
DWORD result;
TRACE(vxd, "VirtualQuery(%lx, %lx, %lx, %lx)\n",
(DWORD)retv, (DWORD)base, (DWORD)info, len);
result = VirtualQuery(base, info, len);
*retv = result;
EAX_reg(context) = STATUS_SUCCESS;
}
break;
case 0x000A: /* SetVirtMemProcess */
/*
* Input: ECX: Process Handle
*
* EDX: Flat address of region
*
* Output: EAX: NtStatus
*/
TRACE(vxd, "[000a] ECX=%lx EDX=%lx\n",
ECX_reg(context), EDX_reg(context));
/* FIXME */
EAX_reg(context) = STATUS_SUCCESS;
break;
case 0x000B: /* ??? some kind of cleanup */
/*
* Input: ECX: Process Handle
*
* Output: EAX: NtStatus
*/
TRACE(vxd, "[000b] ECX=%lx\n", ECX_reg(context));
/* FIXME */
EAX_reg(context) = STATUS_SUCCESS;
break;
case 0x000C: /* Set Debug Flags */
/*
* Input: EDX: Debug Flags
*
* Output: EDX: Previous Debug Flags
*/
FIXME(vxd, "[000c] EDX=%lx\n", EDX_reg(context));
/* FIXME */
EDX_reg(context) = 0;
break;
case 0x000D: /* NtCreateSection */
/*
* Input: EDX: Flat address of arguments on stack
*
* HANDLE32 *retv [out] Handle of Section created
* DWORD flags1 [in] (?? unknown ??)
* DWORD atom [in] Name of Section to create
* LARGE_INTEGER *size [in] Size of Section
* DWORD protect [in] Access protection
* DWORD flags2 [in] (?? unknown ??)
* HFILE32 hFile [in] Handle of file to map
* DWORD psp [in] (Win32s: PSP that hFile belongs to)
*
* Output: EAX: NtStatus
*/
{
DWORD *stack = (DWORD *) W32S_APP2WINE(EDX_reg(context), W32S_OFFSET);
HANDLE32 *retv = (HANDLE32 *)W32S_APP2WINE(stack[0], W32S_OFFSET);
DWORD flags1 = stack[1];
DWORD atom = stack[2];
LARGE_INTEGER *size = (LARGE_INTEGER *)W32S_APP2WINE(stack[3], W32S_OFFSET);
DWORD protect = stack[4];
DWORD flags2 = stack[5];
HFILE32 hFile = HFILE16_TO_HFILE32(stack[6]);
DWORD psp = stack[7];
HANDLE32 result = INVALID_HANDLE_VALUE32;
char name[128];
TRACE(vxd, "NtCreateSection(%lx, %lx, %lx, %lx, %lx, %lx, %lx, %lx)\n",
(DWORD)retv, flags1, atom, (DWORD)size, protect, flags2,
(DWORD)hFile, psp);
if (!atom || GlobalGetAtomName32A(atom, name, sizeof(name)))
{
TRACE(vxd, "NtCreateSection: name=%s\n", atom? name : NULL);
result = CreateFileMapping32A(hFile, NULL, protect,
size? size->HighPart : 0,
size? size->LowPart : 0,
atom? name : NULL);
}
if (result == INVALID_HANDLE_VALUE32)
WARN(vxd, "NtCreateSection: failed!\n");
else
TRACE(vxd, "NtCreateSection: returned %lx\n", (DWORD)result);
if (result != INVALID_HANDLE_VALUE32)
*retv = result,
EAX_reg(context) = STATUS_SUCCESS;
else
*retv = result,
EAX_reg(context) = STATUS_NO_MEMORY; /* FIXME */
}
break;
case 0x000E: /* NtOpenSection */
/*
* Input: EDX: Flat address of arguments on stack
*
* HANDLE32 *retv [out] Handle of Section opened
* DWORD protect [in] Access protection
* DWORD atom [in] Name of Section to create
*
* Output: EAX: NtStatus
*/
{
DWORD *stack = (DWORD *)W32S_APP2WINE(EDX_reg(context), W32S_OFFSET);
HANDLE32 *retv = (HANDLE32 *)W32S_APP2WINE(stack[0], W32S_OFFSET);
DWORD protect = stack[1];
DWORD atom = stack[2];
HANDLE32 result = INVALID_HANDLE_VALUE32;
char name[128];
TRACE(vxd, "NtOpenSection(%lx, %lx, %lx)\n",
(DWORD)retv, protect, atom);
if (atom && GlobalGetAtomName32A(atom, name, sizeof(name)))
{
TRACE(vxd, "NtOpenSection: name=%s\n", name);
result = OpenFileMapping32A(protect, FALSE, name);
}
if (result == INVALID_HANDLE_VALUE32)
WARN(vxd, "NtOpenSection: failed!\n");
else
TRACE(vxd, "NtOpenSection: returned %lx\n", (DWORD)result);
if (result != INVALID_HANDLE_VALUE32)
*retv = result,
EAX_reg(context) = STATUS_SUCCESS;
else
*retv = result,
EAX_reg(context) = STATUS_NO_MEMORY; /* FIXME */
}
break;
case 0x000F: /* NtCloseSection */
/*
* Input: EDX: Flat address of arguments on stack
*
* HANDLE32 handle [in] Handle of Section to close
* DWORD *id [out] Unique ID (?? unclear ??)
*
* Output: EAX: NtStatus
*/
{
DWORD *stack = (DWORD *)W32S_APP2WINE(EDX_reg(context), W32S_OFFSET);
HANDLE32 handle = stack[0];
DWORD *id = (DWORD *)W32S_APP2WINE(stack[1], W32S_OFFSET);
TRACE(vxd, "NtCloseSection(%lx, %lx)\n", (DWORD)handle, (DWORD)id);
CloseHandle(handle);
if (id) *id = 0; /* FIXME */
EAX_reg(context) = STATUS_SUCCESS;
}
break;
case 0x0010: /* NtDupSection */
/*
* Input: EDX: Flat address of arguments on stack
*
* HANDLE32 handle [in] Handle of Section to duplicate
*
* Output: EAX: NtStatus
*/
{
DWORD *stack = (DWORD *)W32S_APP2WINE(EDX_reg(context), W32S_OFFSET);
HANDLE32 handle = stack[0];
TRACE(vxd, "NtDupSection(%lx)\n", (DWORD)handle);
/* Handle is 'duplicated' by incrementing RefCount */
HANDLE_GetObjPtr(PROCESS_Current(), handle, K32OBJ_MEM_MAPPED_FILE, 0,NULL);
EAX_reg(context) = STATUS_SUCCESS;
}
break;
case 0x0011: /* NtMapViewOfSection */
/*
* Input: EDX: Flat address of arguments on stack
*
* HANDLE32 SectionHandle [in] Section to be mapped
* DWORD ProcessHandle [in] Process to be mapped into
* DWORD * BaseAddress [in/out] Address to be mapped at
* DWORD ZeroBits [in] (?? unclear ??)
* DWORD CommitSize [in] (?? unclear ??)
* LARGE_INTEGER *SectionOffset [in] Offset within section
* DWORD * ViewSize [in] Size of view
* DWORD InheritDisposition [in] (?? unclear ??)
* DWORD AllocationType [in] (?? unclear ??)
* DWORD Protect [in] Access protection
*
* Output: EAX: NtStatus
*/
{
DWORD * stack = (DWORD *)W32S_APP2WINE(EDX_reg(context), W32S_OFFSET);
HANDLE32 SectionHandle = stack[0];
DWORD ProcessHandle = stack[1]; /* ignored */
DWORD * BaseAddress = (DWORD *)W32S_APP2WINE(stack[2], W32S_OFFSET);
DWORD ZeroBits = stack[3];
DWORD CommitSize = stack[4];
LARGE_INTEGER *SectionOffset = (LARGE_INTEGER *)W32S_APP2WINE(stack[5], W32S_OFFSET);
DWORD * ViewSize = (DWORD *)W32S_APP2WINE(stack[6], W32S_OFFSET);
DWORD InheritDisposition = stack[7];
DWORD AllocationType = stack[8];
DWORD Protect = stack[9];
LPBYTE address = (LPBYTE)(BaseAddress?
W32S_APP2WINE(*BaseAddress, W32S_OFFSET) : 0);
DWORD access = 0, result;
switch (Protect & ~(PAGE_GUARD|PAGE_NOCACHE))
{
case PAGE_READONLY: access = FILE_MAP_READ; break;
case PAGE_READWRITE: access = FILE_MAP_WRITE; break;
case PAGE_WRITECOPY: access = FILE_MAP_COPY; break;
case PAGE_EXECUTE_READ: access = FILE_MAP_READ; break;
case PAGE_EXECUTE_READWRITE: access = FILE_MAP_WRITE; break;
case PAGE_EXECUTE_WRITECOPY: access = FILE_MAP_COPY; break;
}
TRACE(vxd, "NtMapViewOfSection"
"(%lx, %lx, %lx, %lx, %lx, %lx, %lx, %lx, %lx, %lx)\n",
(DWORD)SectionHandle, ProcessHandle, (DWORD)BaseAddress,
ZeroBits, CommitSize, (DWORD)SectionOffset, (DWORD)ViewSize,
InheritDisposition, AllocationType, Protect);
TRACE(vxd, "NtMapViewOfSection: "
"base=%lx, offset=%lx, size=%lx, access=%lx\n",
(DWORD)address, SectionOffset? SectionOffset->LowPart : 0,
ViewSize? *ViewSize : 0, access);
result = (DWORD)MapViewOfFileEx(SectionHandle, access,
SectionOffset? SectionOffset->HighPart : 0,
SectionOffset? SectionOffset->LowPart : 0,
ViewSize? *ViewSize : 0, address);
TRACE(vxd, "NtMapViewOfSection: result=%lx\n", result);
if (W32S_WINE2APP(result, W32S_OFFSET))
{
if (BaseAddress) *BaseAddress = W32S_WINE2APP(result, W32S_OFFSET);
EAX_reg(context) = STATUS_SUCCESS;
}
else
EAX_reg(context) = STATUS_NO_MEMORY; /* FIXME */
}
break;
case 0x0012: /* NtUnmapViewOfSection */
/*
* Input: EDX: Flat address of arguments on stack
*
* DWORD ProcessHandle [in] Process (defining address space)
* LPBYTE BaseAddress [in] Base address of view to be unmapped
*
* Output: EAX: NtStatus
*/
{
DWORD *stack = (DWORD *)W32S_APP2WINE(EDX_reg(context), W32S_OFFSET);
DWORD ProcessHandle = stack[0]; /* ignored */
LPBYTE BaseAddress = (LPBYTE)W32S_APP2WINE(stack[1], W32S_OFFSET);
TRACE(vxd, "NtUnmapViewOfSection(%lx, %lx)\n",
ProcessHandle, (DWORD)BaseAddress);
UnmapViewOfFile(BaseAddress);
EAX_reg(context) = STATUS_SUCCESS;
}
break;
case 0x0013: /* NtFlushVirtualMemory */
/*
* Input: EDX: Flat address of arguments on stack
*
* DWORD ProcessHandle [in] Process (defining address space)
* LPBYTE *BaseAddress [in?] Base address of range to be flushed
* DWORD *ViewSize [in?] Number of bytes to be flushed
* DWORD *unknown [???] (?? unknown ??)
*
* Output: EAX: NtStatus
*/
{
DWORD *stack = (DWORD *)W32S_APP2WINE(EDX_reg(context), W32S_OFFSET);
DWORD ProcessHandle = stack[0]; /* ignored */
DWORD *BaseAddress = (DWORD *)W32S_APP2WINE(stack[1], W32S_OFFSET);
DWORD *ViewSize = (DWORD *)W32S_APP2WINE(stack[2], W32S_OFFSET);
DWORD *unknown = (DWORD *)W32S_APP2WINE(stack[3], W32S_OFFSET);
LPBYTE address = (LPBYTE)(BaseAddress? W32S_APP2WINE(*BaseAddress, W32S_OFFSET) : 0);
DWORD size = ViewSize? *ViewSize : 0;
TRACE(vxd, "NtFlushVirtualMemory(%lx, %lx, %lx, %lx)\n",
ProcessHandle, (DWORD)BaseAddress, (DWORD)ViewSize,
(DWORD)unknown);
TRACE(vxd, "NtFlushVirtualMemory: base=%lx, size=%lx\n",
(DWORD)address, size);
FlushViewOfFile(address, size);
EAX_reg(context) = STATUS_SUCCESS;
}
break;
case 0x0014: /* Get/Set Debug Registers */
/*
* Input: ECX: 0 if Get, 1 if Set
*
* EDX: Get: Flat address of buffer to receive values of
* debug registers DR0 .. DR7
* Set: Flat address of buffer containing values of
* debug registers DR0 .. DR7 to be set
* Output: None
*/
FIXME(vxd, "[0014] ECX=%lx EDX=%lx\n",
ECX_reg(context), EDX_reg(context));
/* FIXME */
break;
case 0x0015: /* Set Coprocessor Emulation Flag */
/*
* Input: EDX: 0 to deactivate, 1 to activate coprocessor emulation
*
* Output: None
*/
TRACE(vxd, "[0015] EDX=%lx\n", EDX_reg(context));
/* We don't care, as we always have a coprocessor anyway */
break;
case 0x0016: /* Init Win32S VxD PSP */
/*
* If called to query required PSP size:
*
* Input: EBX: 0
* Output: EDX: Required size of Win32s VxD PSP
*
* If called to initialize allocated PSP:
*
* Input: EBX: LoWord: Selector of Win32s VxD PSP
* HiWord: Paragraph of Win32s VxD PSP (DOSMEM)
* Output: None
*/
if (EBX_reg(context) == 0)
EDX_reg(context) = 0x80;
else
{
PDB *psp = PTR_SEG_OFF_TO_LIN(BX_reg(context), 0);
psp->nbFiles = 32;
psp->fileHandlesPtr = MAKELONG(HIWORD(EBX_reg(context)), 0x5c);
memset((LPBYTE)psp + 0x5c, '\xFF', 32);
}
break;
case 0x0017: /* Set Break Point */
/*
* Input: EBX: Offset of Break Point
* CX: Selector of Break Point
*
* Output: None
*/
FIXME(vxd, "[0017] EBX=%lx CX=%x\n",
EBX_reg(context), CX_reg(context));
/* FIXME */
break;
case 0x0018: /* VirtualLock */
/*
* Input: ECX: Current Process
*
* EDX: Flat address of arguments on stack
*
* DWORD *retv [out] TRUE if success, FALSE if failure
* LPVOID base [in] Flat address of range to lock
* DWORD size [in] Size of range
*
* Output: EAX: NtStatus
*/
{
DWORD *stack = (DWORD *)W32S_APP2WINE(EDX_reg(context), W32S_OFFSET);
DWORD *retv = (DWORD *)W32S_APP2WINE(stack[0], W32S_OFFSET);
LPVOID base = (LPVOID) W32S_APP2WINE(stack[1], W32S_OFFSET);
DWORD size = stack[2];
DWORD result;
TRACE(vxd, "VirtualLock(%lx, %lx, %lx)\n",
(DWORD)retv, (DWORD)base, size);
result = VirtualLock(base, size);
if (result)
*retv = TRUE,
EAX_reg(context) = STATUS_SUCCESS;
else
*retv = FALSE,
EAX_reg(context) = STATUS_NO_MEMORY; /* FIXME */
}
break;
case 0x0019: /* VirtualUnlock */
/*
* Input: ECX: Current Process
*
* EDX: Flat address of arguments on stack
*
* DWORD *retv [out] TRUE if success, FALSE if failure
* LPVOID base [in] Flat address of range to unlock
* DWORD size [in] Size of range
*
* Output: EAX: NtStatus
*/
{
DWORD *stack = (DWORD *)W32S_APP2WINE(EDX_reg(context), W32S_OFFSET);
DWORD *retv = (DWORD *)W32S_APP2WINE(stack[0], W32S_OFFSET);
LPVOID base = (LPVOID) W32S_APP2WINE(stack[1], W32S_OFFSET);
DWORD size = stack[2];
DWORD result;
TRACE(vxd, "VirtualUnlock(%lx, %lx, %lx)\n",
(DWORD)retv, (DWORD)base, size);
result = VirtualUnlock(base, size);
if (result)
*retv = TRUE,
EAX_reg(context) = STATUS_SUCCESS;
else
*retv = FALSE,
EAX_reg(context) = STATUS_NO_MEMORY; /* FIXME */
}
break;
case 0x001A: /* KGetSystemInfo */
/*
* Input: None
*
* Output: ECX: Start of sparse memory arena
* EDX: End of sparse memory arena
*/
TRACE(vxd, "KGetSystemInfo()\n");
/*
* Note: Win32s reserves 0GB - 2GB for Win 3.1 and uses 2GB - 4GB as
* sparse memory arena. We do it the other way around, since
* we have to reserve 3GB - 4GB for Linux, and thus use
* 0GB - 3GB as sparse memory arena.
*
* FIXME: What about other OSes ?
*/
ECX_reg(context) = W32S_WINE2APP(0x00000000, W32S_OFFSET);
EDX_reg(context) = W32S_WINE2APP(0xbfffffff, W32S_OFFSET);
break;
case 0x001B: /* KGlobalMemStat */
/*
* Input: ESI: Flat address of buffer to receive memory info
*
* Output: None
*/
{
struct Win32sMemoryInfo
{
DWORD DIPhys_Count; /* Total physical pages */
DWORD DIFree_Count; /* Free physical pages */
DWORD DILin_Total_Count; /* Total virtual pages (private arena) */
DWORD DILin_Total_Free; /* Free virtual pages (private arena) */
DWORD SparseTotal; /* Total size of sparse arena (bytes ?) */
DWORD SparseFree; /* Free size of sparse arena (bytes ?) */
};
struct Win32sMemoryInfo *info =
(struct Win32sMemoryInfo *)W32S_APP2WINE(ESI_reg(context), W32S_OFFSET);
FIXME(vxd, "KGlobalMemStat(%lx)\n", (DWORD)info);
/* FIXME */
}
break;
case 0x001C: /* Enable/Disable Exceptions */
/*
* Input: ECX: 0 to disable, 1 to enable exception handling
*
* Output: None
*/
TRACE(vxd, "[001c] ECX=%lx\n", ECX_reg(context));
/* FIXME */
break;
case 0x001D: /* VirtualAlloc called from 16-bit code */
/*
* Input: EDX: Segmented address of arguments on stack
*
* LPVOID base [in] Flat address of region to reserve/commit
* DWORD size [in] Size of region
* DWORD type [in] Type of allocation
* DWORD prot [in] Type of access protection
*
* Output: EAX: NtStatus
* EDX: Flat base address of allocated region
*/
{
DWORD *stack = PTR_SEG_OFF_TO_LIN(LOWORD(EDX_reg(context)),
HIWORD(EDX_reg(context)));
LPVOID base = (LPVOID)W32S_APP2WINE(stack[0], W32S_OFFSET);
DWORD size = stack[1];
DWORD type = stack[2];
DWORD prot = stack[3];
DWORD result;
TRACE(vxd, "VirtualAlloc16(%lx, %lx, %lx, %lx)\n",
(DWORD)base, size, type, prot);
if (type & 0x80000000)
{
WARN(vxd, "VirtualAlloc16: strange type %lx\n", type);
type &= 0x7fffffff;
}
result = (DWORD)VirtualAlloc(base, size, type, prot);
if (W32S_WINE2APP(result, W32S_OFFSET))
EDX_reg(context) = W32S_WINE2APP(result, W32S_OFFSET),
EAX_reg(context) = STATUS_SUCCESS;
else
EDX_reg(context) = 0,
EAX_reg(context) = STATUS_NO_MEMORY; /* FIXME */
TRACE(vxd, "VirtualAlloc16: returning base %lx\n", EDX_reg(context));
}
break;
case 0x001E: /* VirtualFree called from 16-bit code */
/*
* Input: EDX: Segmented address of arguments on stack
*
* LPVOID base [in] Flat address of region
* DWORD size [in] Size of region
* DWORD type [in] Type of operation
*
* Output: EAX: NtStatus
* EDX: TRUE if success, FALSE if failure
*/
{
DWORD *stack = PTR_SEG_OFF_TO_LIN(LOWORD(EDX_reg(context)),
HIWORD(EDX_reg(context)));
LPVOID base = (LPVOID)W32S_APP2WINE(stack[0], W32S_OFFSET);
DWORD size = stack[1];
DWORD type = stack[2];
DWORD result;
TRACE(vxd, "VirtualFree16(%lx, %lx, %lx)\n",
(DWORD)base, size, type);
result = VirtualFree(base, size, type);
if (result)
EDX_reg(context) = TRUE,
EAX_reg(context) = STATUS_SUCCESS;
else
EDX_reg(context) = FALSE,
EAX_reg(context) = STATUS_NO_MEMORY; /* FIXME */
}
break;
case 0x001F: /* FWorkingSetSize */
/*
* Input: EDX: 0 if Get, 1 if Set
*
* ECX: Get: Buffer to receive Working Set Size
* Set: Buffer containing Working Set Size
*
* Output: NtStatus
*/
{
DWORD *ptr = (DWORD *)W32S_APP2WINE(ECX_reg(context), W32S_OFFSET);
BOOL32 set = EDX_reg(context);
TRACE(vxd, "FWorkingSetSize(%lx, %lx)\n", (DWORD)ptr, (DWORD)set);
if (set)
/* We do it differently ... */;
else
*ptr = 0x100;
EAX_reg(context) = STATUS_SUCCESS;
}
break;
default:
VXD_BARF( context, "W32S" );
}
}
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