r14                  uint64
	r15                  uint64
	rip                  uint64
	anon0                [512]byte
	vectorregister       [26]m128a
	vectorcontrol        uint64
	debugcontrol         uint64
	lastbranchtorip      uint64
	lastbranchfromrip    uint64
	lastexceptiontorip   uint64
	lastexceptionfromrip uint64
}

func (c *context) ip() uintptr { return uintptr(c.rip) }
func (c *context) sp() uintptr { return uintptr(c.rsp) }

}

// case 16
func (h *debugCallHandler) restoreSigContext(ctxt *sigctxt) {
	// Restore all registers except RIP and RSP.
	rip, rsp := ctxt.rip(), ctxt.rsp()
	fp := ctxt.regs().fpstate
	*ctxt.regs() = h.sigCtxt.savedRegs
	ctxt.regs().fpstate = fp
	*fp = h.sigCtxt.savedFP
	ctxt.set_rip(rip)
	ctxt.set_rsp(rsp)
}

// storeRegArgs sets up argument registers in the signal
// context state from an abi.RegArgs.
//

func (c *sigctxt) r14() uint64 { return c.regs().r14 }
func (c *sigctxt) r15() uint64 { return c.regs().r15 }

//go:nosplit
//go:nowritebarrierrec
func (c *sigctxt) rip() uint64 { return c.regs().rip }

func (c *sigctxt) rflags() uint64  { return c.regs().eflags }
func (c *sigctxt) cs() uint64      { return uint64(c.regs().cs) }
func (c *sigctxt) fs() uint64      { return uint64(c.regs().fs) }

	print("r14    ", hex(c.r14()), "\n")
	print("r15    ", hex(c.r15()), "\n")
	print("rip    ", hex(c.rip()), "\n")
	print("rflags ", hex(c.rflags()), "\n")
	print("cs     ", hex(c.cs()), "\n")
	print("fs     ", hex(c.fs()), "\n")
	print("gs     ", hex(c.gs()), "\n")
}

//go:nosplit
//go:nowritebarrierrec
func (c *sigctxt) sigpc() uintptr { return uintptr(c.rip()) }

func (c *sigctxt) setsigpc(x uint64) { c.set_rip(x) }

func (c *sigctxt) r14() uint64 { return c.regs().r14 }
func (c *sigctxt) r15() uint64 { return c.regs().r15 }

//go:nosplit
//go:nowritebarrierrec
func (c *sigctxt) rip() uint64 { return c.regs().rip }

func (c *sigctxt) rflags() uint64  { return c.regs().rflags }
func (c *sigctxt) cs() uint64      { return c.regs().cs }
func (c *sigctxt) fs() uint64      { return c.regs().fs }

	padding     [3]uint16
}

type xmmreg struct {
	element [4]uint32
}

type fpstate struct {
	cwd       uint16
	swd       uint16
	ftw       uint16
	fop       uint16
	rip       uint64
	rdp       uint64
	mxcsr     uint32
	mxcr_mask uint32
	_st       [8]fpxreg
	_xmm      [16]xmmreg
	padding   [24]uint32
}

type fpxreg1 struct {
	significand [4]uint16

package cgotest

/*
#include <windows.h>
USHORT backtrace(ULONG FramesToCapture, PVOID *BackTrace) {
#ifdef _AMD64_
	CONTEXT context;
	RtlCaptureContext(&context);
	ULONG64 ControlPc;
	ControlPc = context.Rip;
	int i;
	for (i = 0; i < FramesToCapture; i++) {
		PRUNTIME_FUNCTION FunctionEntry;
		ULONG64 ImageBase;
		VOID *HandlerData;
		ULONG64 EstablisherFrame;

rcx     0x33b5
rdx     0x0
rdi     0x1
rsi     0x7684
rbp     0x7684
rsp     0xafb8
r8      0x0
r9      0x0
r10     0x1002
r11     0x206
r12     0x0
r13     0x0
r14     0x7c48
r15     0xa000
rip     0x1b7d
rflags  0x10202
cs      0x27
fs      0x10
gs      0x48

    {
        exceptionCount++;
        // prepare context to resume execution
        CONTEXT *c = ExceptionInfo->ContextRecord;
#ifdef _AMD64_
        c->Rip = *(DWORD64 *)c->Rsp;
        c->Rsp += 8;
#elif defined(_X86_)
        c->Eip = *(DWORD *)c->Esp;
        c->Esp += 4;
#else
        c->Pc = c->Lr;
#endif
#ifdef _ARM64_

	Rbx      uint64
	R11      uint64
	R10      uint64
	R9       uint64
	R8       uint64
	Rax      uint64
	Rcx      uint64
	Rdx      uint64
	Rsi      uint64
	Rdi      uint64
	Orig_rax uint64
	Rip      uint64
	Cs       uint64
	Eflags   uint64
	Rsp      uint64
	Ss       uint64
	Fs_base  uint64
	Gs_base  uint64
	Ds       uint64
	Es       uint64
	Fs       uint64
	Gs       uint64
}