Alexandre Julliard : ntdll: Support the __os_arm64x_helper functions in the loader.

[Alexandre Julliard]

Module: wine
Branch: master
Commit: 4a026f4230d2888fd57f26bcc5efe5d98c0091e4
URL:    https://gitlab.winehq.org/wine/wine/-/commit/4a026f4230d2888fd57f26bcc5efe5d...

Author: Alexandre Julliard 
Date:   Fri Mar  8 09:57:10 2024 +0100

ntdll: Support the __os_arm64x_helper functions in the loader.

---

dlls/ntdll/loader.c     | 28 +++++++++++++++++++++-------
 dlls/ntdll/ntdll_misc.h |  9 +++++++++
 include/winnt.h         |  9 +++++++++
 3 files changed, 39 insertions(+), 7 deletions(-)

diff --git a/dlls/ntdll/loader.c b/dlls/ntdll/loader.c
index 765fb5b1617..b389a16d2a7 100644
--- a/dlls/ntdll/loader.c
+++ b/dlls/ntdll/loader.c
@@ -240,18 +240,23 @@ static void module_push_unload_trace( const WINE_MODREF *wm )

#ifdef __arm64ec__

+static void update_hybrid_pointer( void *module, const IMAGE_SECTION_HEADER *sec, UINT rva, void *ptr )
+{
+    if (!rva) return;
+
+    if (rva < sec->VirtualAddress || rva >= sec->VirtualAddress + sec->Misc.VirtualSize)
+        ERR( "rva %x outside of section %s (%lx-%lx)\n", rva,
+             sec->Name, sec->VirtualAddress, sec->VirtualAddress + sec->Misc.VirtualSize );
+    else
+        *(void **)get_rva( module, rva ) = ptr;
+}
+
 static void update_hybrid_metadata( void *module, IMAGE_NT_HEADERS *nt,
                                     const IMAGE_ARM64EC_METADATA *metadata )
 {
     DWORD i, protect_old;
     const IMAGE_SECTION_HEADER *sec = IMAGE_FIRST_SECTION( nt );

-    if (metadata->Version != 1)
-    {
-        ERR( "unknown version %lu\n", metadata->Version );
-        return;
-    }
-
     /* assume that all pointers are in the same section */

for (i = 0; i < nt->FileHeader.NumberOfSections; i++, sec++)
@@ -264,13 +269,22 @@ static void update_hybrid_metadata( void *module, IMAGE_NT_HEADERS *nt,

NtProtectVirtualMemory( NtCurrentProcess(), &base, &size, PAGE_READWRITE, &protect_old );

-#define SET_FUNC(func,val) *(void **)get_rva( module, metadata->func ) = val
+#define SET_FUNC(func,val) update_hybrid_pointer( module, sec, metadata->func, val )
             SET_FUNC( __os_arm64x_dispatch_call, __os_arm64x_check_call );
             SET_FUNC( __os_arm64x_dispatch_call_no_redirect, __os_arm64x_dispatch_call_no_redirect );
             SET_FUNC( __os_arm64x_dispatch_fptr, __os_arm64x_dispatch_fptr );
             SET_FUNC( __os_arm64x_dispatch_icall, __os_arm64x_check_icall );
             SET_FUNC( __os_arm64x_dispatch_icall_cfg, __os_arm64x_check_icall_cfg );
             SET_FUNC( __os_arm64x_dispatch_ret, __os_arm64x_dispatch_ret );
+            SET_FUNC( __os_arm64x_helper0, __os_arm64x_helper0 );
+            SET_FUNC( __os_arm64x_helper1, __os_arm64x_helper1 );
+            SET_FUNC( __os_arm64x_helper2, __os_arm64x_helper2 );
+            SET_FUNC( __os_arm64x_helper3, __os_arm64x_helper3 );
+            SET_FUNC( __os_arm64x_helper4, __os_arm64x_helper4 );
+            SET_FUNC( __os_arm64x_helper5, __os_arm64x_helper5 );
+            SET_FUNC( __os_arm64x_helper6, __os_arm64x_helper6 );
+            SET_FUNC( __os_arm64x_helper7, __os_arm64x_helper7 );
+            SET_FUNC( __os_arm64x_helper8, __os_arm64x_helper8 );
             SET_FUNC( GetX64InformationFunctionPointer, __os_arm64x_get_x64_information );
             SET_FUNC( SetX64InformationFunctionPointer, __os_arm64x_set_x64_information );
 #undef SET_FUNC
diff --git a/dlls/ntdll/ntdll_misc.h b/dlls/ntdll/ntdll_misc.h
index 171ded98c67..cc467d44966 100644
--- a/dlls/ntdll/ntdll_misc.h
+++ b/dlls/ntdll/ntdll_misc.h
@@ -170,6 +170,15 @@ extern void *__os_arm64x_dispatch_fptr;
 extern void *__os_arm64x_dispatch_ret;
 extern void *__os_arm64x_get_x64_information;
 extern void *__os_arm64x_set_x64_information;
+extern void *__os_arm64x_helper0;
+extern void *__os_arm64x_helper1;
+extern void *__os_arm64x_helper2;
+extern void *__os_arm64x_helper3;
+extern void *__os_arm64x_helper4;
+extern void *__os_arm64x_helper5;
+extern void *__os_arm64x_helper6;
+extern void *__os_arm64x_helper7;
+extern void *__os_arm64x_helper8;

#endif

diff --git a/include/winnt.h b/include/winnt.h
index 7adbc1d3761..e7c322fd127 100644
--- a/include/winnt.h
+++ b/include/winnt.h
@@ -4044,6 +4044,15 @@ typedef struct _IMAGE_ARM64EC_METADATA
     ULONG  ExtraRFETableSize;
     ULONG  __os_arm64x_dispatch_fptr;
     ULONG  AuxiliaryIATCopy;
+    ULONG  __os_arm64x_helper0;
+    ULONG  __os_arm64x_helper1;
+    ULONG  __os_arm64x_helper2;
+    ULONG  __os_arm64x_helper3;
+    ULONG  __os_arm64x_helper4;
+    ULONG  __os_arm64x_helper5;
+    ULONG  __os_arm64x_helper6;
+    ULONG  __os_arm64x_helper7;
+    ULONG  __os_arm64x_helper8;
 } IMAGE_ARM64EC_METADATA;

typedef struct _IMAGE_ARM64EC_REDIRECTION_ENTRY