go-delve/delve · error

could not get floating point registers: %v

Error message

could not get floating point registers: %v

What it means

Error "could not get floating point registers: %v" thrown in go-delve/delve.

Source

Thrown at pkg/proc/native/threads_linux_riscv64.go:25

	"syscall"
	"unsafe"

	sys "golang.org/x/sys/unix"

	"github.com/go-delve/delve/pkg/proc"
	"github.com/go-delve/delve/pkg/proc/linutil"
	"golang.org/x/arch/riscv64/riscv64asm"
)

func (thread *nativeThread) fpRegisters() ([]proc.Register, []byte, error) {
	var err error
	var riscv64_fpregs linutil.RISCV64PtraceFpRegs

	thread.dbp.execPtraceFunc(func() { err = ptraceGetFpRegset(thread.ID, &riscv64_fpregs) })
	fpregs := riscv64_fpregs.Decode()

	if err != nil {
		err = fmt.Errorf("could not get floating point registers: %v", err.Error())
	}

	return fpregs, riscv64_fpregs.Fregs, err
}

func (t *nativeThread) restoreRegisters(savedRegs proc.Registers) error {
	var restoreRegistersErr error

	sr := savedRegs.(*linutil.RISCV64Registers)
	t.dbp.execPtraceFunc(func() {
		restoreRegistersErr = ptraceSetGRegs(t.ID, sr.Regs)
		if restoreRegistersErr != syscall.Errno(0) {
			return
		}

		if sr.Fpregset != nil {
			iov := sys.Iovec{Base: &sr.Fpregset[0], Len: uint64(len(sr.Fpregset))}
			_, _, restoreRegistersErr = syscall.Syscall6(syscall.SYS_PTRACE, sys.PTRACE_SETREGSET, uintptr(t.ID), uintptr(elf.NT_FPREGSET), uintptr(unsafe.Pointer(&iov)), 0, 0)

View on GitHub (pinned to a23773e6c3)

When it happens

Trigger: Thrown at pkg/proc/native/threads_linux_riscv64.go:25 when the library encounters an invalid state.

Common situations: See trigger scenarios.

AI-assisted analysis of go-delve/delve@a23773e6c3 (2026-08-31). Data as JSON: /api/errors/4a22cb4290b91897. Report an issue: GitHub.