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ntdll: Only update the data that was requested in the destination context. 

Signed-off-by: Alexandre Julliard <julliard@winehq.org>
This commit is contained in:
Alexandre Julliard 2021-06-26 11:13:24 +02:00
parent 8ac411ed6d
commit ee65ea88ee
1 changed files with 51 additions and 49 deletions
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100
dlls/ntdll/unix/thread.c
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@ -174,7 +174,7 @@ static unsigned int get_server_context_flags( const void *context, USHORT machin
if (flags & CONTEXT_I386_SEGMENTS) ret |= SERVER_CTX_SEGMENTS;
if (flags & CONTEXT_I386_FLOATING_POINT) ret |= SERVER_CTX_FLOATING_POINT;
if (flags & CONTEXT_I386_DEBUG_REGISTERS) ret |= SERVER_CTX_DEBUG_REGISTERS;
if (flags & CONTEXT_I386_EXTENDED_REGISTERS) ret |= SERVER_CTX_EXTENDED_REGISTERS;
if (flags & CONTEXT_I386_EXTENDED_REGISTERS) ret |= SERVER_CTX_EXTENDED_REGISTERS | SERVER_CTX_FLOATING_POINT;
if (flags & CONTEXT_I386_XSTATE) ret |= SERVER_CTX_YMM_REGISTERS;
break;
case IMAGE_FILE_MACHINE_AMD64:
@ -594,7 +594,7 @@ static NTSTATUS context_to_server( context_t *to, USHORT to_machine, const void
*/
static NTSTATUS context_from_server( void *dst, const context_t *from, USHORT machine )
{
DWORD i;
DWORD i, to_flags;
switch (MAKELONG( from->machine, machine ))
{
@ -602,8 +602,8 @@ static NTSTATUS context_from_server( void *dst, const context_t *from, USHORT ma
{
I386_CONTEXT *to = dst;
to->ContextFlags = CONTEXT_i386 | (to->ContextFlags & CONTEXT_I386_XSTATE);
if (from->flags & SERVER_CTX_CONTROL)
to_flags = to->ContextFlags & ~CONTEXT_i386;
if ((from->flags & SERVER_CTX_CONTROL) && (to_flags & CONTEXT_I386_CONTROL))
{
to->ContextFlags |= CONTEXT_I386_CONTROL;
to->Ebp = from->ctl.i386_regs.ebp;
@ -613,7 +613,7 @@ static NTSTATUS context_from_server( void *dst, const context_t *from, USHORT ma
to->SegSs = from->ctl.i386_regs.ss;
to->EFlags = from->ctl.i386_regs.eflags;
}
if (from->flags & SERVER_CTX_INTEGER)
if ((from->flags & SERVER_CTX_INTEGER) && (to_flags & CONTEXT_I386_INTEGER))
{
to->ContextFlags |= CONTEXT_I386_INTEGER;
to->Eax = from->integer.i386_regs.eax;
@ -623,7 +623,7 @@ static NTSTATUS context_from_server( void *dst, const context_t *from, USHORT ma
to->Esi = from->integer.i386_regs.esi;
to->Edi = from->integer.i386_regs.edi;
}
if (from->flags & SERVER_CTX_SEGMENTS)
if ((from->flags & SERVER_CTX_SEGMENTS) && (to_flags & CONTEXT_I386_SEGMENTS))
{
to->ContextFlags |= CONTEXT_I386_SEGMENTS;
to->SegDs = from->seg.i386_regs.ds;
@ -631,7 +631,7 @@ static NTSTATUS context_from_server( void *dst, const context_t *from, USHORT ma
to->SegFs = from->seg.i386_regs.fs;
to->SegGs = from->seg.i386_regs.gs;
}
if (from->flags & SERVER_CTX_FLOATING_POINT)
if ((from->flags & SERVER_CTX_FLOATING_POINT) && (to_flags & CONTEXT_I386_FLOATING_POINT))
{
to->ContextFlags |= CONTEXT_I386_FLOATING_POINT;
to->FloatSave.ControlWord = from->fp.i386_regs.ctrl;
@ -644,7 +644,7 @@ static NTSTATUS context_from_server( void *dst, const context_t *from, USHORT ma
to->FloatSave.Cr0NpxState = from->fp.i386_regs.cr0npx;
memcpy( to->FloatSave.RegisterArea, from->fp.i386_regs.regs, sizeof(to->FloatSave.RegisterArea) );
}
if (from->flags & SERVER_CTX_DEBUG_REGISTERS)
if ((from->flags & SERVER_CTX_DEBUG_REGISTERS) && (to_flags & CONTEXT_I386_DEBUG_REGISTERS))
{
to->ContextFlags |= CONTEXT_I386_DEBUG_REGISTERS;
to->Dr0 = from->debug.i386_regs.dr0;
@ -654,13 +654,12 @@ static NTSTATUS context_from_server( void *dst, const context_t *from, USHORT ma
to->Dr6 = from->debug.i386_regs.dr6;
to->Dr7 = from->debug.i386_regs.dr7;
}
if (from->flags & SERVER_CTX_EXTENDED_REGISTERS)
if ((from->flags & SERVER_CTX_EXTENDED_REGISTERS) && (to_flags & CONTEXT_I386_EXTENDED_REGISTERS))
{
to->ContextFlags |= CONTEXT_I386_EXTENDED_REGISTERS;
memcpy( to->ExtendedRegisters, from->ext.i386_regs, sizeof(to->ExtendedRegisters) );
}
if (from->flags & SERVER_CTX_YMM_REGISTERS &&
(to->ContextFlags & CONTEXT_I386_XSTATE) == CONTEXT_I386_XSTATE)
if ((from->flags & SERVER_CTX_YMM_REGISTERS) && (to_flags & CONTEXT_I386_XSTATE))
{
CONTEXT_EX *xctx = (CONTEXT_EX *)(to + 1);
XSTATE *xs = (XSTATE *)((char *)xctx + xctx->XState.Offset);
@ -682,8 +681,8 @@ static NTSTATUS context_from_server( void *dst, const context_t *from, USHORT ma
{
I386_CONTEXT *to = dst;
to->ContextFlags = CONTEXT_i386 | (to->ContextFlags & CONTEXT_I386_XSTATE);
if (from->flags & SERVER_CTX_CONTROL)
to_flags = to->ContextFlags & ~CONTEXT_i386;
if ((from->flags & SERVER_CTX_CONTROL) && (to_flags & CONTEXT_I386_CONTROL))
{
to->ContextFlags |= CONTEXT_I386_CONTROL;
to->Ebp = from->ctl.x86_64_regs.rbp;
@ -693,7 +692,7 @@ static NTSTATUS context_from_server( void *dst, const context_t *from, USHORT ma
to->SegSs = from->ctl.x86_64_regs.ss;
to->EFlags = from->ctl.x86_64_regs.flags;
}
if (from->flags & SERVER_CTX_INTEGER)
if ((from->flags & SERVER_CTX_INTEGER) && (to_flags & CONTEXT_I386_INTEGER))
{
to->ContextFlags |= CONTEXT_I386_INTEGER;
to->Eax = from->integer.x86_64_regs.rax;
@ -703,7 +702,7 @@ static NTSTATUS context_from_server( void *dst, const context_t *from, USHORT ma
to->Esi = from->integer.x86_64_regs.rsi;
to->Edi = from->integer.x86_64_regs.rdi;
}
if (from->flags & SERVER_CTX_SEGMENTS)
if ((from->flags & SERVER_CTX_SEGMENTS) && (to_flags & CONTEXT_I386_SEGMENTS))
{
to->ContextFlags |= CONTEXT_I386_SEGMENTS;
to->SegDs = from->seg.x86_64_regs.ds;
@ -713,11 +712,18 @@ static NTSTATUS context_from_server( void *dst, const context_t *from, USHORT ma
}
if (from->flags & SERVER_CTX_FLOATING_POINT)
{
to->ContextFlags |= CONTEXT_I386_EXTENDED_REGISTERS | CONTEXT_I386_FLOATING_POINT;
memcpy( to->ExtendedRegisters, from->fp.x86_64_regs.fpregs, sizeof(to->ExtendedRegisters) );
fpux_to_fpu( &to->FloatSave, (XMM_SAVE_AREA32 *)from->fp.x86_64_regs.fpregs );
if (to_flags & CONTEXT_I386_EXTENDED_REGISTERS)
{
to->ContextFlags |= CONTEXT_I386_EXTENDED_REGISTERS;
memcpy( to->ExtendedRegisters, from->fp.x86_64_regs.fpregs, sizeof(to->ExtendedRegisters) );
}
if (to_flags & CONTEXT_I386_FLOATING_POINT)
{
to->ContextFlags |= CONTEXT_I386_FLOATING_POINT;
fpux_to_fpu( &to->FloatSave, (XMM_SAVE_AREA32 *)from->fp.x86_64_regs.fpregs );
}
}
if (from->flags & SERVER_CTX_DEBUG_REGISTERS)
if ((from->flags & SERVER_CTX_DEBUG_REGISTERS) && (to_flags & CONTEXT_I386_DEBUG_REGISTERS))
{
to->ContextFlags |= CONTEXT_I386_DEBUG_REGISTERS;
to->Dr0 = from->debug.x86_64_regs.dr0;
@ -727,8 +733,7 @@ static NTSTATUS context_from_server( void *dst, const context_t *from, USHORT ma
to->Dr6 = from->debug.x86_64_regs.dr6;
to->Dr7 = from->debug.x86_64_regs.dr7;
}
if (from->flags & SERVER_CTX_YMM_REGISTERS &&
(to->ContextFlags & CONTEXT_I386_XSTATE) == CONTEXT_I386_XSTATE)
if ((from->flags & SERVER_CTX_YMM_REGISTERS) && (to_flags & CONTEXT_I386_XSTATE))
{
CONTEXT_EX *xctx = (CONTEXT_EX *)(to + 1);
XSTATE *xs = (XSTATE *)((char *)xctx + xctx->XState.Offset);
@ -750,8 +755,8 @@ static NTSTATUS context_from_server( void *dst, const context_t *from, USHORT ma
{
AMD64_CONTEXT *to = dst;
to->ContextFlags = CONTEXT_AMD64 | (to->ContextFlags & CONTEXT_AMD64_XSTATE);
if (from->flags & SERVER_CTX_CONTROL)
to_flags = to->ContextFlags & ~CONTEXT_i386;
if ((from->flags & SERVER_CTX_CONTROL) && (to_flags & CONTEXT_AMD64_CONTROL))
{
to->ContextFlags |= CONTEXT_AMD64_CONTROL;
to->Rbp = from->ctl.x86_64_regs.rbp;
@ -761,8 +766,7 @@ static NTSTATUS context_from_server( void *dst, const context_t *from, USHORT ma
to->SegSs = from->ctl.x86_64_regs.ss;
to->EFlags = from->ctl.x86_64_regs.flags;
}
if (from->flags & SERVER_CTX_INTEGER)
if ((from->flags & SERVER_CTX_INTEGER) && (to_flags & CONTEXT_AMD64_INTEGER))
{
to->ContextFlags |= CONTEXT_AMD64_INTEGER;
to->Rax = from->integer.x86_64_regs.rax;
@ -780,7 +784,7 @@ static NTSTATUS context_from_server( void *dst, const context_t *from, USHORT ma
to->R14 = from->integer.x86_64_regs.r14;
to->R15 = from->integer.x86_64_regs.r15;
}
if (from->flags & SERVER_CTX_SEGMENTS)
if ((from->flags & SERVER_CTX_SEGMENTS) && (to_flags & CONTEXT_AMD64_SEGMENTS))
{
to->ContextFlags |= CONTEXT_AMD64_SEGMENTS;
to->SegDs = from->seg.x86_64_regs.ds;
@ -788,13 +792,13 @@ static NTSTATUS context_from_server( void *dst, const context_t *from, USHORT ma
to->SegFs = from->seg.x86_64_regs.fs;
to->SegGs = from->seg.x86_64_regs.gs;
}
if (from->flags & SERVER_CTX_FLOATING_POINT)
if ((from->flags & SERVER_CTX_FLOATING_POINT) && (to_flags & CONTEXT_AMD64_FLOATING_POINT))
{
to->ContextFlags |= CONTEXT_AMD64_FLOATING_POINT;
memcpy( &to->u.FltSave, from->fp.x86_64_regs.fpregs, sizeof(from->fp.x86_64_regs.fpregs) );
to->MxCsr = to->u.FltSave.MxCsr;
}
if (from->flags & SERVER_CTX_DEBUG_REGISTERS)
if ((from->flags & SERVER_CTX_DEBUG_REGISTERS) && (to_flags & CONTEXT_AMD64_DEBUG_REGISTERS))
{
to->ContextFlags |= CONTEXT_AMD64_DEBUG_REGISTERS;
to->Dr0 = from->debug.x86_64_regs.dr0;
@ -804,8 +808,7 @@ static NTSTATUS context_from_server( void *dst, const context_t *from, USHORT ma
to->Dr6 = from->debug.x86_64_regs.dr6;
to->Dr7 = from->debug.x86_64_regs.dr7;
}
if (from->flags & SERVER_CTX_YMM_REGISTERS &&
(to->ContextFlags & CONTEXT_AMD64_XSTATE) == CONTEXT_AMD64_XSTATE)
if ((from->flags & SERVER_CTX_YMM_REGISTERS) && (to_flags & CONTEXT_AMD64_XSTATE))
{
CONTEXT_EX *xctx = (CONTEXT_EX *)(to + 1);
XSTATE *xs = (XSTATE *)((char *)xctx + xctx->XState.Offset);
@ -827,8 +830,8 @@ static NTSTATUS context_from_server( void *dst, const context_t *from, USHORT ma
{
AMD64_CONTEXT *to = dst;
to->ContextFlags = CONTEXT_AMD64;
if (from->flags & SERVER_CTX_CONTROL)
to_flags = to->ContextFlags & ~CONTEXT_i386;
if ((from->flags & SERVER_CTX_CONTROL) && (to_flags & CONTEXT_AMD64_CONTROL))
{
to->ContextFlags |= CONTEXT_AMD64_CONTROL;
to->Rbp = from->ctl.i386_regs.ebp;
@ -838,8 +841,7 @@ static NTSTATUS context_from_server( void *dst, const context_t *from, USHORT ma
to->SegSs = from->ctl.i386_regs.ss;
to->EFlags = from->ctl.i386_regs.eflags;
}
if (from->flags & SERVER_CTX_INTEGER)
if ((from->flags & SERVER_CTX_INTEGER) && (to_flags & CONTEXT_AMD64_INTEGER))
{
to->ContextFlags |= CONTEXT_AMD64_INTEGER;
to->Rax = from->integer.i386_regs.eax;
@ -857,7 +859,7 @@ static NTSTATUS context_from_server( void *dst, const context_t *from, USHORT ma
to->R14 = 0;
to->R15 = 0;
}
if (from->flags & SERVER_CTX_SEGMENTS)
if ((from->flags & SERVER_CTX_SEGMENTS) && (to_flags & CONTEXT_AMD64_SEGMENTS))
{
to->ContextFlags |= CONTEXT_AMD64_SEGMENTS;
to->SegDs = from->seg.i386_regs.ds;
@ -865,12 +867,12 @@ static NTSTATUS context_from_server( void *dst, const context_t *from, USHORT ma
to->SegFs = from->seg.i386_regs.fs;
to->SegGs = from->seg.i386_regs.gs;
}
if (from->flags & SERVER_CTX_EXTENDED_REGISTERS)
if ((from->flags & SERVER_CTX_EXTENDED_REGISTERS) && (to_flags & CONTEXT_AMD64_FLOATING_POINT))
{
to->ContextFlags |= CONTEXT_AMD64_FLOATING_POINT;
memcpy( &to->u.FltSave, from->ext.i386_regs, sizeof(to->u.FltSave) );
}
else if (from->flags & SERVER_CTX_FLOATING_POINT)
else if ((from->flags & SERVER_CTX_FLOATING_POINT) && (to_flags & CONTEXT_AMD64_FLOATING_POINT))
{
I386_FLOATING_SAVE_AREA fpu;
@ -886,7 +888,7 @@ static NTSTATUS context_from_server( void *dst, const context_t *from, USHORT ma
memcpy( fpu.RegisterArea, from->fp.i386_regs.regs, sizeof(fpu.RegisterArea) );
fpu_to_fpux( &to->u.FltSave, &fpu );
}
if (from->flags & SERVER_CTX_DEBUG_REGISTERS)
if ((from->flags & SERVER_CTX_DEBUG_REGISTERS) && (to_flags & CONTEXT_AMD64_DEBUG_REGISTERS))
{
to->ContextFlags |= CONTEXT_AMD64_DEBUG_REGISTERS;
to->Dr0 = from->debug.i386_regs.dr0;
@ -896,8 +898,7 @@ static NTSTATUS context_from_server( void *dst, const context_t *from, USHORT ma
to->Dr6 = from->debug.i386_regs.dr6;
to->Dr7 = from->debug.i386_regs.dr7;
}
if (from->flags & SERVER_CTX_YMM_REGISTERS &&
(to->ContextFlags & CONTEXT_AMD64_XSTATE) == CONTEXT_AMD64_XSTATE)
if ((from->flags & SERVER_CTX_YMM_REGISTERS) && (to_flags & CONTEXT_AMD64_XSTATE))
{
CONTEXT_EX *xctx = (CONTEXT_EX *)(to + 1);
XSTATE *xs = (XSTATE *)((char *)xctx + xctx->XState.Offset);
@ -919,8 +920,8 @@ static NTSTATUS context_from_server( void *dst, const context_t *from, USHORT ma
{
ARM_CONTEXT *to = dst;
to->ContextFlags = CONTEXT_ARM;
if (from->flags & SERVER_CTX_CONTROL)
to_flags = to->ContextFlags & ~CONTEXT_ARM;
if ((from->flags & SERVER_CTX_CONTROL) && (to_flags & CONTEXT_ARM_CONTROL))
{
to->ContextFlags |= CONTEXT_ARM_CONTROL;
to->Sp = from->ctl.arm_regs.sp;
@ -928,7 +929,7 @@ static NTSTATUS context_from_server( void *dst, const context_t *from, USHORT ma
to->Pc = from->ctl.arm_regs.pc;
to->Cpsr = from->ctl.arm_regs.cpsr;
}
if (from->flags & SERVER_CTX_INTEGER)
if ((from->flags & SERVER_CTX_INTEGER) && (to_flags & CONTEXT_ARM_INTEGER))
{
to->ContextFlags |= CONTEXT_ARM_INTEGER;
to->R0 = from->integer.arm_regs.r[0];
@ -945,13 +946,13 @@ static NTSTATUS context_from_server( void *dst, const context_t *from, USHORT ma
to->R11 = from->integer.arm_regs.r[11];
to->R12 = from->integer.arm_regs.r[12];
}
if (from->flags & SERVER_CTX_FLOATING_POINT)
if ((from->flags & SERVER_CTX_FLOATING_POINT) && (to_flags & CONTEXT_ARM_FLOATING_POINT))
{
to->ContextFlags |= CONTEXT_ARM_FLOATING_POINT;
for (i = 0; i < 32; i++) to->u.D[i] = from->fp.arm_regs.d[i];
to->Fpscr = from->fp.arm_regs.fpscr;
}
if (from->flags & SERVER_CTX_DEBUG_REGISTERS)
if ((from->flags & SERVER_CTX_DEBUG_REGISTERS) && (to_flags & CONTEXT_ARM_DEBUG_REGISTERS))
{
to->ContextFlags |= CONTEXT_ARM_DEBUG_REGISTERS;
for (i = 0; i < ARM_MAX_BREAKPOINTS; i++) to->Bvr[i] = from->debug.arm_regs.bvr[i];
@ -966,8 +967,9 @@ static NTSTATUS context_from_server( void *dst, const context_t *from, USHORT ma
{
ARM64_NT_CONTEXT *to = dst;
to_flags = to->ContextFlags & ~CONTEXT_ARM64;
to->ContextFlags = CONTEXT_ARM64;
if (from->flags & SERVER_CTX_CONTROL)
if ((from->flags & SERVER_CTX_CONTROL) && (to_flags & CONTEXT_ARM64_CONTROL))
{
to->ContextFlags |= CONTEXT_ARM64_CONTROL;
to->u.s.Fp = from->integer.arm64_regs.x[29];
@ -976,12 +978,12 @@ static NTSTATUS context_from_server( void *dst, const context_t *from, USHORT ma
to->Pc = from->ctl.arm64_regs.pc;
to->Cpsr = from->ctl.arm64_regs.pstate;
}
if (from->flags & SERVER_CTX_INTEGER)
if ((from->flags & SERVER_CTX_INTEGER) && (to_flags & CONTEXT_ARM64_INTEGER))
{
to->ContextFlags |= CONTEXT_ARM64_INTEGER;
for (i = 0; i <= 28; i++) to->u.X[i] = from->integer.arm64_regs.x[i];
}
if (from->flags & SERVER_CTX_FLOATING_POINT)
if ((from->flags & SERVER_CTX_FLOATING_POINT) && (to_flags & CONTEXT_ARM64_FLOATING_POINT))
{
to->ContextFlags |= CONTEXT_ARM64_FLOATING_POINT;
for (i = 0; i < 32; i++)
@ -992,7 +994,7 @@ static NTSTATUS context_from_server( void *dst, const context_t *from, USHORT ma
to->Fpcr = from->fp.arm64_regs.fpcr;
to->Fpsr = from->fp.arm64_regs.fpsr;
}
if (from->flags & SERVER_CTX_DEBUG_REGISTERS)
if ((from->flags & SERVER_CTX_DEBUG_REGISTERS) && (to_flags & CONTEXT_ARM64_DEBUG_REGISTERS))
{
to->ContextFlags |= CONTEXT_ARM64_DEBUG_REGISTERS;
for (i = 0; i < ARM64_MAX_BREAKPOINTS; i++) to->Bcr[i] = from->debug.arm64_regs.bcr[i];