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ntdll: Build an initial WoW context on ARM64.

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This commit is contained in:
Alexandre Julliard 2023-02-24 11:45:45 +01:00
parent 5c831122c9
commit ecb80c6e79
1 changed files with 29 additions and 0 deletions
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29
dlls/ntdll/unix/signal_arm64.c
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@ -1390,6 +1390,8 @@ void DECLSPEC_HIDDEN call_init_thunk( LPTHREAD_START_ROUTINE entry, void *arg, B
struct arm64_thread_data *thread_data = (struct arm64_thread_data *)&teb->GdiTebBatch;
struct syscall_frame *frame = thread_data->syscall_frame;
CONTEXT *ctx, context = { CONTEXT_ALL };
I386_CONTEXT *i386_context;
ARM_CONTEXT *arm_context;
context.u.s.X0 = (DWORD64)entry;
context.u.s.X1 = (DWORD64)arg;
@ -1397,6 +1399,33 @@ void DECLSPEC_HIDDEN call_init_thunk( LPTHREAD_START_ROUTINE entry, void *arg, B
context.Sp = (DWORD64)teb->Tib.StackBase;
context.Pc = (DWORD64)pRtlUserThreadStart;
if ((i386_context = get_cpu_area( IMAGE_FILE_MACHINE_I386 )))
{
i386_context->ContextFlags = CONTEXT_I386_ALL;
i386_context->Eax = (ULONG_PTR)entry;
i386_context->Ebx = (arg == peb ? get_wow_teb( teb )->Peb : (ULONG_PTR)arg);
i386_context->Esp = get_wow_teb( teb )->Tib.StackBase - 16;
i386_context->Eip = pLdrSystemDllInitBlock->pRtlUserThreadStart;
i386_context->SegCs = 0x23;
i386_context->SegDs = 0x2b;
i386_context->SegEs = 0x2b;
i386_context->SegFs = 0x53;
i386_context->SegGs = 0x2b;
i386_context->SegSs = 0x2b;
i386_context->EFlags = 0x202;
i386_context->FloatSave.ControlWord = 0x27f;
((XSAVE_FORMAT *)i386_context->ExtendedRegisters)->MxCsr = 0x1f80;
}
else if ((arm_context = get_cpu_area( IMAGE_FILE_MACHINE_ARMNT )))
{
arm_context->ContextFlags = CONTEXT_ARM_ALL;
arm_context->R0 = (ULONG_PTR)entry;
arm_context->R1 = (arg == peb ? get_wow_teb( teb )->Peb : (ULONG_PTR)arg);
arm_context->Sp = get_wow_teb( teb )->Tib.StackBase;
arm_context->Pc = pLdrSystemDllInitBlock->pRtlUserThreadStart;
if (arm_context->Pc & 1) arm_context->Cpsr |= 0x20; /* thumb mode */
}
if (suspend) wait_suspend( &context );
ctx = (CONTEXT *)((ULONG_PTR)context.Sp & ~15) - 1;