func (c *sigctxt) esp() uint32 { return c.regs().esp }

//go:nosplit
//go:nowritebarrierrec
func (c *sigctxt) eip() uint32 { return c.regs().eip }

func (c *sigctxt) eflags() uint32  { return c.regs().eflags }
func (c *sigctxt) cs() uint32      { return uint32(c.regs().cs) }
func (c *sigctxt) fs() uint32      { return uint32(c.regs().fs) }
func (c *sigctxt) gs() uint32      { return uint32(c.regs().gs) }

}

// PtraceRegsArm64 is the registers used by arm64 binaries.
type PtraceRegsArm64 struct {
	Regs   [31]uint64
	Sp     uint64
	Pc     uint64
	Pstate uint64
}

// PtraceGetRegsArm64 fetches the registers used by arm64 binaries.
func PtraceGetRegsArm64(pid int, regsout *PtraceRegsArm64) error {
	return ptracePtr(PTRACE_GETREGS, pid, 0, unsafe.Pointer(regsout))
}

}

// PtraceSetRegsMips sets the registers used by mips binaries.
func PtraceSetRegsMips(pid int, regs *PtraceRegsMips) error {
	return ptracePtr(PTRACE_SETREGS, pid, 0, unsafe.Pointer(regs))
}

// PtraceRegsMips64 is the registers used by mips64 binaries.
type PtraceRegsMips64 struct {
	Regs     [32]uint64
	Lo       uint64
	Hi       uint64
	Epc      uint64
	Badvaddr uint64
	Status   uint64

package runtime

import (
	"internal/abi"
	"internal/goarch"
	"unsafe"
)

type sigContext struct {
	savedRegs sigcontext
}

func sigctxtSetContextRegister(ctxt *sigctxt, x uint64) {
	ctxt.regs().regs[26] = x
}

func sigctxtAtTrapInstruction(ctxt *sigctxt) bool {
	return *(*uint32)(unsafe.Pointer(ctxt.sigpc())) == 0xd4200000 // BRK 0
}

func sigctxtStatus(ctxt *sigctxt) uint64 {
	return ctxt.r20()
}

}

// PtraceSetRegsMipsle sets the registers used by mipsle binaries.
func PtraceSetRegsMipsle(pid int, regs *PtraceRegsMipsle) error {
	return ptracePtr(PTRACE_SETREGS, pid, 0, unsafe.Pointer(regs))
}

// PtraceRegsMips64le is the registers used by mips64le binaries.
type PtraceRegsMips64le struct {
	Regs     [32]uint64
	Lo       uint64
	Hi       uint64
	Epc      uint64
	Badvaddr uint64
	Status   uint64

}

// 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.
//

	return ptracePtr(PTRACE_GETREGS, pid, 0, unsafe.Pointer(regsout))
}

// PtraceSetRegs386 sets the registers used by 386 binaries.
func PtraceSetRegs386(pid int, regs *PtraceRegs386) error {
	return ptracePtr(PTRACE_SETREGS, pid, 0, unsafe.Pointer(regs))
}

// PtraceRegsAmd64 is the registers used by amd64 binaries.
type PtraceRegsAmd64 struct {
	R15      uint64
	R14      uint64
	R13      uint64
	R12      uint64

}

// PtraceSetRegSetArm64 sets the registers used by arm64 binaries.
func PtraceSetRegSetArm64(pid, addr int, regs *PtraceRegsArm64) error {
	iovec := Iovec{(*byte)(unsafe.Pointer(regs)), uint64(unsafe.Sizeof(*regs))}
	return ptracePtr(PTRACE_SETREGSET, pid, uintptr(addr), unsafe.Pointer(&iovec))

		return x + 1, y + 1.0
	}
	var args *stackArgs
	var regs abi.RegArgs
	intRegs := regs.Ints[:]
	floatRegs := regs.Floats[:]
	fval := float64(42.0)
	if len(intRegs) > 0 {
		intRegs[0] = 42
		floatRegs[0] = math.Float64bits(fval)
	} else {
		args = &stackArgs{
			x0: 42,
			x1: 42.0,
		}
	}

	if _, err := runtime.InjectDebugCall(g, fn, &regs, args, debugCallTKill, false); err != nil {
		t.Fatal(err)

// the caller's frame due to issue #43228.
TEXT crosscall2(SB),NOSPLIT|NOFRAME,$0
	// Start with standard C stack frame layout and linkage, allocate
	// 32 bytes of argument space, save callee-save regs, and set R0 to $0.
	STACK_AND_SAVE_HOST_TO_GO_ABI(32)
	// The above will not preserve R2 (TOC). Save it in case Go is
	// compiled without a TOC pointer (e.g -buildmode=default).
	MOVD	R2, 24(R1)

	// Load the current g.