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97 lines
3.4 KiB
C
97 lines
3.4 KiB
C
/*
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* Support for the Unix part of builtin dlls
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*
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* Copyright 2019 Alexandre Julliard
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2.1 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
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*/
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#include <stdarg.h>
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#include "ntstatus.h"
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#define WIN32_NO_STATUS
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#include "windef.h"
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#include "winbase.h"
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#include "winternl.h"
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#include "wine/unixlib.h"
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static inline void *image_base(void)
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{
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#ifdef __WINE_PE_BUILD
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extern IMAGE_DOS_HEADER __ImageBase;
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return (void *)&__ImageBase;
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#else
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extern IMAGE_NT_HEADERS __wine_spec_nt_header;
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return (void *)((__wine_spec_nt_header.OptionalHeader.ImageBase + 0xffff) & ~0xffff);
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#endif
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}
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static NTSTATUS WINAPI unix_call_fallback( unixlib_handle_t handle, unsigned int code, void *args )
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{
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return STATUS_DLL_NOT_FOUND;
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}
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static inline void *get_dispatcher( const char *name )
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{
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UNICODE_STRING ntdll_name = RTL_CONSTANT_STRING( L"ntdll.dll" );
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HMODULE module;
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void **dispatcher;
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LdrGetDllHandle( NULL, 0, &ntdll_name, &module );
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dispatcher = RtlFindExportedRoutineByName( module, "__wine_unix_call_dispatcher" );
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return dispatcher ? *dispatcher : (void *)unix_call_fallback;
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}
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static NTSTATUS WINAPI unix_call_init( unixlib_handle_t handle, unsigned int code, void *args )
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{
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InterlockedExchangePointer( (void **)&__wine_unix_call_dispatcher,
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get_dispatcher( "__wine_unix_call_dispatcher" ));
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return __wine_unix_call_dispatcher( handle, code, args );
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}
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unixlib_handle_t __wine_unixlib_handle = 0;
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NTSTATUS (WINAPI *__wine_unix_call_dispatcher)( unixlib_handle_t, unsigned int, void * ) = unix_call_init;
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#ifdef __arm64ec__
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static NTSTATUS WINAPI unix_call_init_arm64ec( unixlib_handle_t handle, unsigned int code, void *args );
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static __attribute__((used)) NTSTATUS (WINAPI *__wine_unix_call_dispatcher_arm64ec)( unixlib_handle_t, unsigned int, void * ) = unix_call_init_arm64ec;
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static NTSTATUS WINAPI unix_call_init_arm64ec( unixlib_handle_t handle, unsigned int code, void *args )
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{
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InterlockedExchangePointer( (void **)&__wine_unix_call_dispatcher_arm64ec,
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get_dispatcher( "__wine_unix_call_dispatcher_arm64ec" ));
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return __wine_unix_call_arm64ec( handle, code, args );
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}
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NTSTATUS __attribute__((naked)) __wine_unix_call_arm64ec( unixlib_handle_t handle, unsigned int code, void *args )
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{
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asm( ".seh_proc \"#__wine_unix_call_arm64ec\"\n\t"
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".seh_endprologue\n\t"
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"adrp x16, __wine_unix_call_dispatcher_arm64ec\n\t"
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"ldr x16, [x16, #:lo12:__wine_unix_call_dispatcher_arm64ec]\n\t"
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"br x16\n\t"
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".seh_endproc" );
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}
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#endif
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NTSTATUS WINAPI __wine_init_unix_call(void)
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{
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return NtQueryVirtualMemory( GetCurrentProcess(), image_base(), MemoryWineUnixFuncs,
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&__wine_unixlib_handle, sizeof(__wine_unixlib_handle), NULL );
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}
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