CONTEXT structure (winnt.h)
Contains processor-specific register data. The system uses CONTEXT structures to perform various internal operations. Refer to the header file WinNT.h for definitions of this structure for each processor architecture.
Syntax
typedef struct _CONTEXT {
DWORD64 P1Home;
DWORD64 P2Home;
DWORD64 P3Home;
DWORD64 P4Home;
DWORD64 P5Home;
DWORD64 P6Home;
DWORD ContextFlags;
DWORD MxCsr;
WORD SegCs;
WORD SegDs;
WORD SegEs;
WORD SegFs;
WORD SegGs;
WORD SegSs;
DWORD EFlags;
DWORD64 Dr0;
DWORD64 Dr1;
DWORD64 Dr2;
DWORD64 Dr3;
DWORD64 Dr6;
DWORD64 Dr7;
DWORD64 Rax;
DWORD64 Rcx;
DWORD64 Rdx;
DWORD64 Rbx;
DWORD64 Rsp;
DWORD64 Rbp;
DWORD64 Rsi;
DWORD64 Rdi;
DWORD64 R8;
DWORD64 R9;
DWORD64 R10;
DWORD64 R11;
DWORD64 R12;
DWORD64 R13;
DWORD64 R14;
DWORD64 R15;
DWORD64 Rip;
union {
XMM_SAVE_AREA32 FltSave;
NEON128 Q[16];
ULONGLONG D[32];
struct {
M128A Header[2];
M128A Legacy[8];
M128A Xmm0;
M128A Xmm1;
M128A Xmm2;
M128A Xmm3;
M128A Xmm4;
M128A Xmm5;
M128A Xmm6;
M128A Xmm7;
M128A Xmm8;
M128A Xmm9;
M128A Xmm10;
M128A Xmm11;
M128A Xmm12;
M128A Xmm13;
M128A Xmm14;
M128A Xmm15;
} DUMMYSTRUCTNAME;
DWORD S[32];
} DUMMYUNIONNAME;
M128A VectorRegister[26];
DWORD64 VectorControl;
DWORD64 DebugControl;
DWORD64 LastBranchToRip;
DWORD64 LastBranchFromRip;
DWORD64 LastExceptionToRip;
DWORD64 LastExceptionFromRip;
} CONTEXT, *PCONTEXT;
Members
P1Home
P2Home
P3Home
P4Home
P5Home
P6Home
ContextFlags
MxCsr
SegCs
SegDs
SegEs
SegFs
SegGs
SegSs
EFlags
Dr0
Dr1
Dr2
Dr3
Dr6
Dr7
Rax
Rcx
Rdx
Rbx
Rsp
Rbp
Rsi
Rdi
R8
R9
R10
R11
R12
R13
R14
R15
Rip
DUMMYUNIONNAME
DUMMYUNIONNAME.FltSave
DUMMYUNIONNAME.Q[16]
DUMMYUNIONNAME.D[32]
DUMMYUNIONNAME.DUMMYSTRUCTNAME
DUMMYUNIONNAME.DUMMYSTRUCTNAME.Header[2]
DUMMYUNIONNAME.DUMMYSTRUCTNAME.Legacy[8]
DUMMYUNIONNAME.DUMMYSTRUCTNAME.Xmm0
DUMMYUNIONNAME.DUMMYSTRUCTNAME.Xmm1
DUMMYUNIONNAME.DUMMYSTRUCTNAME.Xmm2
DUMMYUNIONNAME.DUMMYSTRUCTNAME.Xmm3
DUMMYUNIONNAME.DUMMYSTRUCTNAME.Xmm4
DUMMYUNIONNAME.DUMMYSTRUCTNAME.Xmm5
DUMMYUNIONNAME.DUMMYSTRUCTNAME.Xmm6
DUMMYUNIONNAME.DUMMYSTRUCTNAME.Xmm7
DUMMYUNIONNAME.DUMMYSTRUCTNAME.Xmm8
DUMMYUNIONNAME.DUMMYSTRUCTNAME.Xmm9
DUMMYUNIONNAME.DUMMYSTRUCTNAME.Xmm10
DUMMYUNIONNAME.DUMMYSTRUCTNAME.Xmm11
DUMMYUNIONNAME.DUMMYSTRUCTNAME.Xmm12
DUMMYUNIONNAME.DUMMYSTRUCTNAME.Xmm13
DUMMYUNIONNAME.DUMMYSTRUCTNAME.Xmm14
DUMMYUNIONNAME.DUMMYSTRUCTNAME.Xmm15
DUMMYUNIONNAME.S[32]
VectorRegister[26]
VectorControl
DebugControl
LastBranchToRip
LastBranchFromRip
LastExceptionToRip
LastExceptionFromRip
Requirements
| Requirement | Value |
|---|---|
| Minimum supported client | Windows XP [desktop apps only] |
| Minimum supported server | Windows Server 2003 [desktop apps only] |
| Header | winnt.h (include Windows.h) |