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Sweden-Number/dlls/kernel32/module.c

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/*
* Modules
*
* Copyright 1995 Alexandre Julliard
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
*/
#include <fcntl.h>
#include <stdarg.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <sys/types.h>
#include "ntstatus.h"
#define WIN32_NO_STATUS
#include "winerror.h"
#include "windef.h"
#include "winbase.h"
#include "winternl.h"
#include "kernel_private.h"
#include "psapi.h"
#include "wine/exception.h"
#include "wine/list.h"
#include "wine/asm.h"
#include "wine/debug.h"
WINE_DEFAULT_DEBUG_CHANNEL(module);
/****************************************************************************
* GetDllDirectoryA (KERNEL32.@)
*/
DWORD WINAPI GetDllDirectoryA( DWORD buf_len, LPSTR buffer )
{
UNICODE_STRING str;
NTSTATUS status;
WCHAR data[MAX_PATH];
DWORD len;
str.Buffer = data;
str.MaximumLength = sizeof(data);
for (;;)
{
status = LdrGetDllDirectory( &str );
if (status != STATUS_BUFFER_TOO_SMALL) break;
if (str.Buffer != data) HeapFree( GetProcessHeap(), 0, str.Buffer );
str.MaximumLength = str.Length;
if (!(str.Buffer = HeapAlloc( GetProcessHeap(), 0, str.MaximumLength )))
{
status = STATUS_NO_MEMORY;
break;
}
}
if (!set_ntstatus( status )) return 0;
len = FILE_name_WtoA( str.Buffer, str.Length / sizeof(WCHAR), NULL, 0 );
if (buffer && buf_len > len)
{
FILE_name_WtoA( str.Buffer, -1, buffer, buf_len );
}
else
{
len++; /* for terminating null */
if (buffer) *buffer = 0;
}
if (str.Buffer != data) HeapFree( GetProcessHeap(), 0, str.Buffer );
return len;
}
/****************************************************************************
* GetDllDirectoryW (KERNEL32.@)
*/
DWORD WINAPI GetDllDirectoryW( DWORD buf_len, LPWSTR buffer )
{
UNICODE_STRING str;
NTSTATUS status;
str.Buffer = buffer;
str.MaximumLength = min( buf_len, UNICODE_STRING_MAX_CHARS ) * sizeof(WCHAR);
status = LdrGetDllDirectory( &str );
if (status == STATUS_BUFFER_TOO_SMALL) status = STATUS_SUCCESS;
if (!set_ntstatus( status )) return 0;
return str.Length / sizeof(WCHAR);
}
/****************************************************************************
* SetDllDirectoryA (KERNEL32.@)
*/
BOOL WINAPI SetDllDirectoryA( LPCSTR dir )
{
WCHAR *dirW = NULL;
BOOL ret;
if (dir && !(dirW = FILE_name_AtoW( dir, TRUE ))) return FALSE;
ret = SetDllDirectoryW( dirW );
HeapFree( GetProcessHeap(), 0, dirW );
return ret;
}
/****************************************************************************
* SetDllDirectoryW (KERNEL32.@)
*/
BOOL WINAPI SetDllDirectoryW( LPCWSTR dir )
{
UNICODE_STRING str;
RtlInitUnicodeString( &str, dir );
return set_ntstatus( LdrSetDllDirectory( &str ));
}
/***********************************************************************
* GetBinaryTypeW [KERNEL32.@]
*
* Determine whether a file is executable, and if so, what kind.
*
* PARAMS
* lpApplicationName [I] Path of the file to check
* lpBinaryType [O] Destination for the binary type
*
* RETURNS
* TRUE, if the file is an executable, in which case lpBinaryType is set.
* FALSE, if the file is not an executable or if the function fails.
*
* NOTES
* The type of executable is a property that determines which subsystem an
* executable file runs under. lpBinaryType can be set to one of the following
* values:
* SCS_32BIT_BINARY: A Win32 based application
* SCS_64BIT_BINARY: A Win64 based application
* SCS_DOS_BINARY: An MS-Dos based application
* SCS_WOW_BINARY: A Win16 based application
* SCS_PIF_BINARY: A PIF file that executes an MS-Dos based app
* SCS_POSIX_BINARY: A POSIX based application ( Not implemented )
* SCS_OS216_BINARY: A 16bit OS/2 based application
*
* To find the binary type, this function reads in the files header information.
* If extended header information is not present it will assume that the file
* is a DOS executable. If extended header information is present it will
* determine if the file is a 16, 32 or 64 bit Windows executable by checking the
* flags in the header.
*
* ".com" and ".pif" files are only recognized by their file name extension,
* as per native Windows.
*/
BOOL WINAPI GetBinaryTypeW( LPCWSTR name, LPDWORD type )
{
static const WCHAR comW[] = { '.','c','o','m',0 };
static const WCHAR pifW[] = { '.','p','i','f',0 };
HANDLE hfile, mapping;
NTSTATUS status;
const WCHAR *ptr;
TRACE("%s\n", debugstr_w(name) );
if (type == NULL) return FALSE;
hfile = CreateFileW( name, GENERIC_READ, FILE_SHARE_READ, NULL, OPEN_EXISTING, 0, 0 );
if ( hfile == INVALID_HANDLE_VALUE )
return FALSE;
status = NtCreateSection( &mapping, STANDARD_RIGHTS_REQUIRED | SECTION_QUERY,
NULL, NULL, PAGE_READONLY, SEC_IMAGE, hfile );
CloseHandle( hfile );
switch (status)
{
case STATUS_SUCCESS:
{
SECTION_IMAGE_INFORMATION info;
status = NtQuerySection( mapping, SectionImageInformation, &info, sizeof(info), NULL );
CloseHandle( mapping );
if (status) return FALSE;
switch (info.Machine)
{
case IMAGE_FILE_MACHINE_I386:
case IMAGE_FILE_MACHINE_ARM:
case IMAGE_FILE_MACHINE_THUMB:
case IMAGE_FILE_MACHINE_ARMNT:
case IMAGE_FILE_MACHINE_POWERPC:
*type = SCS_32BIT_BINARY;
return TRUE;
case IMAGE_FILE_MACHINE_AMD64:
case IMAGE_FILE_MACHINE_ARM64:
*type = SCS_64BIT_BINARY;
return TRUE;
}
return FALSE;
}
case STATUS_INVALID_IMAGE_WIN_16:
*type = SCS_WOW_BINARY;
return TRUE;
case STATUS_INVALID_IMAGE_WIN_32:
*type = SCS_32BIT_BINARY;
return TRUE;
case STATUS_INVALID_IMAGE_WIN_64:
*type = SCS_64BIT_BINARY;
return TRUE;
case STATUS_INVALID_IMAGE_NE_FORMAT:
*type = SCS_OS216_BINARY;
return TRUE;
case STATUS_INVALID_IMAGE_PROTECT:
*type = SCS_DOS_BINARY;
return TRUE;
case STATUS_INVALID_IMAGE_NOT_MZ:
if ((ptr = wcsrchr( name, '.' )))
{
if (!wcsicmp( ptr, comW ))
{
*type = SCS_DOS_BINARY;
return TRUE;
}
if (!wcsicmp( ptr, pifW ))
{
*type = SCS_PIF_BINARY;
return TRUE;
}
}
return FALSE;
default:
return FALSE;
}
}
/***********************************************************************
* GetBinaryTypeA [KERNEL32.@]
* GetBinaryType [KERNEL32.@]
*
* See GetBinaryTypeW.
*/
BOOL WINAPI GetBinaryTypeA( LPCSTR lpApplicationName, LPDWORD lpBinaryType )
{
ANSI_STRING app_nameA;
TRACE("%s\n", debugstr_a(lpApplicationName));
/* Sanity check.
*/
if ( lpApplicationName == NULL || lpBinaryType == NULL )
return FALSE;
RtlInitAnsiString(&app_nameA, lpApplicationName);
if (!set_ntstatus( RtlAnsiStringToUnicodeString( &NtCurrentTeb()->StaticUnicodeString,
&app_nameA, FALSE )))
return FALSE;
return GetBinaryTypeW(NtCurrentTeb()->StaticUnicodeString.Buffer, lpBinaryType);
}
/***********************************************************************
* GetProcAddress (KERNEL32.@)
*
* Find the address of an exported symbol in a loaded dll.
*
* PARAMS
* hModule [I] Handle to the dll returned by LoadLibraryA().
* function [I] Name of the symbol, or an integer ordinal number < 16384
*
* RETURNS
* Success: A pointer to the symbol in the process address space.
* Failure: NULL. Use GetLastError() to determine the cause.
*/
FARPROC get_proc_address( HMODULE hModule, LPCSTR function )
{
FARPROC fp;
if (!hModule) hModule = NtCurrentTeb()->Peb->ImageBaseAddress;
if ((ULONG_PTR)function >> 16)
{
ANSI_STRING str;
RtlInitAnsiString( &str, function );
if (!set_ntstatus( LdrGetProcedureAddress( hModule, &str, 0, (void**)&fp ))) return NULL;
}
else
if (!set_ntstatus( LdrGetProcedureAddress( hModule, NULL, LOWORD(function), (void**)&fp )))
return NULL;
return fp;
}
#ifdef __x86_64__
/*
* Work around a Delphi bug on x86_64. When delay loading a symbol,
* Delphi saves rcx, rdx, r8 and r9 to the stack. It then calls
* GetProcAddress(), pops the saved registers and calls the function.
* This works fine if all of the parameters are ints. However, since
* it does not save xmm0 - 3, it relies on GetProcAddress() preserving
* these registers if the function takes floating point parameters.
* This wrapper saves xmm0 - 3 to the stack.
*/
extern FARPROC get_proc_address_wrapper( HMODULE module, LPCSTR function );
__ASM_GLOBAL_FUNC( get_proc_address_wrapper,
"pushq %rbp\n\t"
__ASM_SEH(".seh_pushreg %rbp\n\t")
__ASM_CFI(".cfi_adjust_cfa_offset 8\n\t")
__ASM_CFI(".cfi_rel_offset %rbp,0\n\t")
"movq %rsp,%rbp\n\t"
__ASM_SEH(".seh_setframe %rbp,0\n\t")
__ASM_CFI(".cfi_def_cfa_register %rbp\n\t")
"subq $0x40,%rsp\n\t"
__ASM_SEH(".seh_stackalloc 0x40\n\t")
__ASM_SEH(".seh_endprologue\n\t")
"movaps %xmm0,-0x10(%rbp)\n\t"
"movaps %xmm1,-0x20(%rbp)\n\t"
"movaps %xmm2,-0x30(%rbp)\n\t"
"movaps %xmm3,-0x40(%rbp)\n\t"
"call " __ASM_NAME("get_proc_address") "\n\t"
"movaps -0x40(%rbp), %xmm3\n\t"
"movaps -0x30(%rbp), %xmm2\n\t"
"movaps -0x20(%rbp), %xmm1\n\t"
"movaps -0x10(%rbp), %xmm0\n\t"
"leaq 0(%rbp),%rsp\n\t"
__ASM_CFI(".cfi_def_cfa_register %rsp\n\t")
"popq %rbp\n\t"
__ASM_CFI(".cfi_adjust_cfa_offset -8\n\t")
__ASM_CFI(".cfi_same_value %rbp\n\t")
"ret" )
#else /* __x86_64__ */
static inline FARPROC get_proc_address_wrapper( HMODULE module, LPCSTR function )
{
return get_proc_address( module, function );
}
#endif /* __x86_64__ */
FARPROC WINAPI GetProcAddress( HMODULE hModule, LPCSTR function )
{
return get_proc_address_wrapper( hModule, function );
}
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