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

//go:build linux && riscv64

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 "pc":
		regs.PC = value
	case "ra", "x1":
		regs.Ra = value
	case "sp", "x2":
		regs.Sp = value
	case "gp", "x3":
		regs.Gp = value
	case "tp", "x4":
		regs.Tp = value
	case "t0", "x5":
		regs.T0 = value
	case "t1", "x6":
		regs.T1 = value
	case "t2", "x7":
		regs.T2 = value
	case "s0", "fp", "x8":
		regs.S0 = value
	case "s1", "x9":
		regs.S1 = value
	case "a0", "x10":
		regs.A0 = value
	case "a1", "x11":
		regs.A1 = value
	case "a2", "x12":
		regs.A2 = value
	case "a3", "x13":
		regs.A3 = value
	case "a4", "x14":
		regs.A4 = value
	case "a5", "x15":
		regs.A5 = value
	case "a6", "x16":
		regs.A6 = value
	case "a7", "x17":
		regs.A7 = value
	case "s2", "x18":
		regs.S2 = value
	case "s3", "x19":
		regs.S3 = value
	case "s4", "x20":
		regs.S4 = value
	case "s5", "x21":
		regs.S5 = value
	case "s6", "x22":
		regs.S6 = value
	case "s7", "x23":
		regs.S7 = value
	case "s8", "x24":
		regs.S8 = value
	case "s9", "x25":
		regs.S9 = value
	case "s10", "x26":
		regs.S10 = value
	case "s11", "x27":
		regs.S11 = value
	case "t3", "x28":
		regs.T3 = value
	case "t4", "x29":
		regs.T4 = value
	case "t5", "x30":
		regs.T5 = value
	case "t6", "x31":
		regs.T6 = value
	default:
		return fmt.Errorf("debug: unknown register %q", name)
	}
	return s.SetRegs(&regs)
}