122 lines
3.2 KiB
Go
122 lines
3.2 KiB
Go
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// Copyright (c) 2026 Petr Balvín <opensource@petrbalvin.org> (https://petrbalvin.org)
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// SPDX-License-Identifier: BSD-3-Clause
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//go:build freebsd && riscv64
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package debug
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import "fmt"
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func printRegs(regs *Regs, codeBase, funcOff uint64) {
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fmt.Printf(" PC = %#016x (func+%#x)\n", regs.PC, regs.PC-codeBase-funcOff)
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fmt.Printf(" SP = %#016x FP = %#016x\n", regs.Sp, regs.S0)
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fmt.Printf(" RA = %#016x\n", regs.Ra)
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fmt.Printf(" A0 = %#016x A1 = %#016x\n", regs.A0, regs.A1)
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fmt.Printf(" A2 = %#016x A3 = %#016x\n", regs.A2, regs.A3)
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fmt.Printf(" A4 = %#016x A5 = %#016x\n", regs.A4, regs.A5)
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fmt.Printf(" A6 = %#016x A7 = %#016x\n", regs.A6, regs.A7)
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fmt.Printf(" T0 = %#016x T1 = %#016x\n", regs.T0, regs.T1)
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fmt.Printf(" T2 = %#016x T3 = %#016x\n", regs.T2, regs.T3)
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fmt.Printf(" T4 = %#016x T5 = %#016x\n", regs.T4, regs.T5)
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fmt.Printf(" T6 = %#016x\n", regs.T6)
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fmt.Printf(" S1 = %#016x S2 = %#016x\n", regs.S1, regs.S2)
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fmt.Printf(" S3 = %#016x S4 = %#016x\n", regs.S3, regs.S4)
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fmt.Printf(" S5 = %#016x S6 = %#016x\n", regs.S5, regs.S6)
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fmt.Printf(" S7 = %#016x S8 = %#016x\n", regs.S7, regs.S8)
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fmt.Printf(" S9 = %#016x S10 = %#016x\n", regs.S9, regs.S10)
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fmt.Printf(" S11 = %#016x\n", regs.S11)
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}
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func printVectorRegs(v *VectorRegs) {
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fmt.Println("\n FP registers (F0-F31):")
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for i := 0; i < 32; i += 2 {
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fmt.Printf(" F%-2d = %#018x F%-2d = %#018x\n", i, v.F[i], i+1, v.F[i+1])
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}
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fmt.Printf(" FCSR = %#x\n", v.FCSR)
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}
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// SetReg modifies a register value in the debuggee.
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func (s *Session) SetReg(name string, value uint64) error {
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regs, err := s.GetRegs()
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if err != nil {
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return err
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}
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switch name {
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case "pc":
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regs.PC = value
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case "ra", "x1":
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regs.Ra = value
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case "sp", "x2":
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regs.Sp = value
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case "gp", "x3":
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regs.Gp = value
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case "tp", "x4":
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regs.Tp = value
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case "t0", "x5":
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regs.T0 = value
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case "t1", "x6":
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regs.T1 = value
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case "t2", "x7":
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regs.T2 = value
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case "s0", "fp", "x8":
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regs.S0 = value
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case "s1", "x9":
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regs.S1 = value
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case "a0", "x10":
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regs.A0 = value
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case "a1", "x11":
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regs.A1 = value
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case "a2", "x12":
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regs.A2 = value
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case "a3", "x13":
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regs.A3 = value
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case "a4", "x14":
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regs.A4 = value
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case "a5", "x15":
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regs.A5 = value
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case "a6", "x16":
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regs.A6 = value
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case "a7", "x17":
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regs.A7 = value
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case "s2", "x18":
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regs.S2 = value
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case "s3", "x19":
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regs.S3 = value
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case "s4", "x20":
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regs.S4 = value
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case "s5", "x21":
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regs.S5 = value
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case "s6", "x22":
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regs.S6 = value
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case "s7", "x23":
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regs.S7 = value
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case "s8", "x24":
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regs.S8 = value
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case "s9", "x25":
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regs.S9 = value
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case "s10", "x26":
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regs.S10 = value
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case "s11", "x27":
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regs.S11 = value
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case "t3", "x28":
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regs.T3 = value
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case "t4", "x29":
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regs.T4 = value
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case "t5", "x30":
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regs.T5 = value
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case "t6", "x31":
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regs.T6 = value
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default:
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return fmt.Errorf("debug: unknown register %q", name)
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}
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return s.SetRegs(®s)
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}
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// archReturnAddr reads the return address from RA (riscv64 convention).
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func archReturnAddr(s *Session, regs *Regs) (uint64, error) {
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return regs.Ra, nil
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}
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// archSPLabel returns the SP register name for display.
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func archSPLabel() string { return "SP" }
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