// Copyright (c) 2026 Petr Balvín <opensource@petrbalvin.org> (https://petrbalvin.org)
// SPDX-License-Identifier: BSD-3-Clause

//go:build linux && arm64

package debug

import "fmt"

// SetReg modifies a register value in the debuggee.
func (s *Session) SetReg(name string, value uint64) error {
	regs, err := s.GetRegs()
	if err != nil {
		return err
	}
	switch name {
	case "x0":
		regs.X0 = value
	case "x1":
		regs.X1 = value
	case "x2":
		regs.X2 = value
	case "x3":
		regs.X3 = value
	case "x4":
		regs.X4 = value
	case "x5":
		regs.X5 = value
	case "x6":
		regs.X6 = value
	case "x7":
		regs.X7 = value
	case "x8":
		regs.X8 = value
	case "x9":
		regs.X9 = value
	case "x10":
		regs.X10 = value
	case "x11":
		regs.X11 = value
	case "x12":
		regs.X12 = value
	case "x13":
		regs.X13 = value
	case "x14":
		regs.X14 = value
	case "x15":
		regs.X15 = value
	case "x16":
		regs.X16 = value
	case "x17":
		regs.X17 = value
	case "x18":
		regs.X18 = value
	case "x19":
		regs.X19 = value
	case "x20":
		regs.X20 = value
	case "x21":
		regs.X21 = value
	case "x22":
		regs.X22 = value
	case "x23":
		regs.X23 = value
	case "x24":
		regs.X24 = value
	case "x25":
		regs.X25 = value
	case "x26":
		regs.X26 = value
	case "x27":
		regs.X27 = value
	case "x28":
		regs.X28 = value
	case "x29", "fp":
		regs.X29 = value
	case "x30", "lr":
		regs.X30 = value
	case "sp":
		regs.SP = value
	case "pc":
		regs.PC = value
	default:
		return fmt.Errorf("debug: unknown register %q", name)
	}
	return s.SetRegs(&regs)
}