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cli.go
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cli.go
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//-----------------------------------------------------------------------------
/*
RISC-V RV32/RV64 Emulator CLI
*/
//-----------------------------------------------------------------------------
package main
import (
"fmt"
cli "github.com/deadsy/go-cli"
"github.com/deadsy/riscv/csr"
"github.com/deadsy/riscv/mem"
"github.com/deadsy/riscv/util"
)
//-----------------------------------------------------------------------------
const maxAdr = (1 << 32) - 1
//-----------------------------------------------------------------------------
// cli related leaf functions
var cmdHelp = cli.Leaf{
Descr: "general help",
F: func(c *cli.CLI, args []string) {
c.GeneralHelp()
},
}
var cmdHistory = cli.Leaf{
Descr: "command history",
F: func(c *cli.CLI, args []string) {
c.SetLine(c.DisplayHistory(args))
},
}
var cmdExit = cli.Leaf{
Descr: "exit application",
F: func(c *cli.CLI, args []string) {
c.Exit()
},
}
//-----------------------------------------------------------------------------
// virtual memory functions
var helpMemDisplay = []cli.Help{
{"<adr> [len]", "address (hex) - default is 0"},
{"", "length (hex) - default is 0x40"},
}
var cmdVmDisplay8 = cli.Leaf{
Descr: "display virtual memory (8-bits)",
F: func(c *cli.CLI, args []string) {
adr, size, err := util.MemArg(0, maxAdr, args)
if err != nil {
c.User.Put(fmt.Sprintf("%s\n", err))
return
}
m := c.User.(*emuApp).mem
c.User.Put(m.Display(adr, size, 8, true))
},
}
var cmdVmDisplay16 = cli.Leaf{
Descr: "display virtual memory (16-bits)",
F: func(c *cli.CLI, args []string) {
adr, size, err := util.MemArg(0, maxAdr, args)
if err != nil {
c.User.Put(fmt.Sprintf("%s\n", err))
return
}
m := c.User.(*emuApp).mem
c.User.Put(m.Display(adr, size, 16, true))
},
}
var cmdVmDisplay32 = cli.Leaf{
Descr: "display virtual memory (32-bits)",
F: func(c *cli.CLI, args []string) {
adr, size, err := util.MemArg(0, maxAdr, args)
if err != nil {
c.User.Put(fmt.Sprintf("%s\n", err))
return
}
m := c.User.(*emuApp).mem
c.User.Put(m.Display(adr, size, 32, true))
},
}
var cmdVmDisplay64 = cli.Leaf{
Descr: "display virtual memory (64-bits)",
F: func(c *cli.CLI, args []string) {
adr, size, err := util.MemArg(0, maxAdr, args)
if err != nil {
c.User.Put(fmt.Sprintf("%s\n", err))
return
}
m := c.User.(*emuApp).mem
c.User.Put(m.Display(adr, size, 64, true))
},
}
// memDisplayMenu submenu items
var memDisplayVm = cli.Menu{
{"b", cmdVmDisplay8, helpMemDisplay},
{"h", cmdVmDisplay16, helpMemDisplay},
{"w", cmdVmDisplay32, helpMemDisplay},
{"d", cmdVmDisplay64, helpMemDisplay},
}
//-----------------------------------------------------------------------------
// physical memory functions
var cmdPmDisplay8 = cli.Leaf{
Descr: "display physical memory (8-bits)",
F: func(c *cli.CLI, args []string) {
adr, size, err := util.MemArg(0, maxAdr, args)
if err != nil {
c.User.Put(fmt.Sprintf("%s\n", err))
return
}
m := c.User.(*emuApp).mem
c.User.Put(m.Display(adr, size, 8, false))
},
}
var cmdPmDisplay16 = cli.Leaf{
Descr: "display physical memory (16-bits)",
F: func(c *cli.CLI, args []string) {
adr, size, err := util.MemArg(0, maxAdr, args)
if err != nil {
c.User.Put(fmt.Sprintf("%s\n", err))
return
}
m := c.User.(*emuApp).mem
c.User.Put(m.Display(adr, size, 16, false))
},
}
var cmdPmDisplay32 = cli.Leaf{
Descr: "display physical memory (32-bits)",
F: func(c *cli.CLI, args []string) {
adr, size, err := util.MemArg(0, maxAdr, args)
if err != nil {
c.User.Put(fmt.Sprintf("%s\n", err))
return
}
m := c.User.(*emuApp).mem
c.User.Put(m.Display(adr, size, 32, false))
},
}
var cmdPmDisplay64 = cli.Leaf{
Descr: "display physical memory (64-bits)",
F: func(c *cli.CLI, args []string) {
adr, size, err := util.MemArg(0, maxAdr, args)
if err != nil {
c.User.Put(fmt.Sprintf("%s\n", err))
return
}
m := c.User.(*emuApp).mem
c.User.Put(m.Display(adr, size, 64, false))
},
}
// memDisplayMenu submenu items
var memDisplayPm = cli.Menu{
{"b", cmdPmDisplay8, helpMemDisplay},
{"h", cmdPmDisplay16, helpMemDisplay},
{"w", cmdPmDisplay32, helpMemDisplay},
{"d", cmdPmDisplay64, helpMemDisplay},
}
//-----------------------------------------------------------------------------
var helpGo = []cli.Help{
{"<adr>", "address (hex) - default is PC"},
}
func goLoop(c *cli.CLI) bool {
m := c.User.(*emuApp).cpu
err := m.Run()
if err != nil {
c.User.Put(fmt.Sprintf("%s\r\n", err))
return true
}
return false
}
var cmdGo = cli.Leaf{
Descr: "run the emulation (ctrl-d to stop)",
F: func(c *cli.CLI, args []string) {
m := c.User.(*emuApp).cpu
adr, err := util.AddrArg(uint(m.PC), maxAdr, args)
if err != nil {
c.User.Put(fmt.Sprintf("%s\n", err))
return
}
m.PC = uint64(adr)
c.Loop(func() bool { return goLoop(c) }, cli.KeycodeCtrlD)
},
}
func traceLoop(c *cli.CLI) bool {
m := c.User.(*emuApp).cpu
s := m.Disassemble(uint(m.PC))
err := m.Run()
c.User.Put(fmt.Sprintf("%s\r\n", s))
if err != nil {
c.User.Put(fmt.Sprintf("%s\r\n", err))
return true
}
return false
}
var cmdTrace = cli.Leaf{
Descr: "run the emulation with tracing (ctrl-d to stop)",
F: func(c *cli.CLI, args []string) {
m := c.User.(*emuApp).cpu
adr, err := util.AddrArg(uint(m.PC), maxAdr, args)
if err != nil {
c.User.Put(fmt.Sprintf("%s\n", err))
return
}
m.PC = uint64(adr)
c.Loop(func() bool { return traceLoop(c) }, cli.KeycodeCtrlD)
},
}
var cmdStep = cli.Leaf{
Descr: "single step the emulation",
F: func(c *cli.CLI, args []string) {
m := c.User.(*emuApp).cpu
adr, err := util.AddrArg(uint(m.PC), maxAdr, args)
if err != nil {
c.User.Put(fmt.Sprintf("%s\n", err))
return
}
m.PC = uint64(adr)
s := m.Disassemble(adr)
err = m.Run()
c.User.Put(fmt.Sprintf("%s\n", s))
if err != nil {
c.User.Put(fmt.Sprintf("%s\n", err))
}
},
}
//-----------------------------------------------------------------------------
var helpDisassemble = []cli.Help{
{"[adr] [len]", "address (hex) - default is current pc"},
{"", "length (hex) - default is 0x10"},
}
var cmdDisassemble = cli.Leaf{
Descr: "disassemble memory",
F: func(c *cli.CLI, args []string) {
m := c.User.(*emuApp).cpu
adr, size, err := util.MemArg(uint(m.PC), maxAdr, args)
if err != nil {
c.User.Put(fmt.Sprintf("%s\n", err))
return
}
n := int(size)
for n > 0 {
da := m.Disassemble(adr)
c.User.Put(fmt.Sprintf("%s\n", da))
adr += da.Length
n -= int(da.Length)
}
},
}
//-----------------------------------------------------------------------------
var cmdFloatRegisters = cli.Leaf{
Descr: "display float registers",
F: func(c *cli.CLI, args []string) {
m := c.User.(*emuApp).cpu
c.User.Put(fmt.Sprintf("%s\n", m.FloatRegs()))
},
}
var cmdIntRegisters = cli.Leaf{
Descr: "display integer registers",
F: func(c *cli.CLI, args []string) {
m := c.User.(*emuApp).cpu
c.User.Put(fmt.Sprintf("%s\n", m.IntRegs()))
},
}
//-----------------------------------------------------------------------------
var cmdReset = cli.Leaf{
Descr: "reset the cpu",
F: func(c *cli.CLI, args []string) {
m := c.User.(*emuApp).cpu
m.Reset()
},
}
//-----------------------------------------------------------------------------
var cmdSymbol = cli.Leaf{
Descr: "display the symbol table",
F: func(c *cli.CLI, args []string) {
m := c.User.(*emuApp).mem
c.User.Put(fmt.Sprintf("%s\n", m.Symbols()))
},
}
//-----------------------------------------------------------------------------
var cmdCSR = cli.Leaf{
Descr: "display the control and status registers",
F: func(c *cli.CLI, args []string) {
csr := c.User.(*emuApp).cpu.CSR
c.User.Put(fmt.Sprintf("%s\n", csr.Display()))
},
}
//-----------------------------------------------------------------------------
var cmdMap = cli.Leaf{
Descr: "display the memory map",
F: func(c *cli.CLI, args []string) {
m := c.User.(*emuApp).mem
c.User.Put(fmt.Sprintf("%s\n", m.Map()))
},
}
//-----------------------------------------------------------------------------
// memory monitors
var helpBreakPointAdd = []cli.Help{}
var helpBreakPointSetClr = []cli.Help{}
var cmdBreakPointAdd = cli.Leaf{
Descr: "add a monitor point",
F: func(c *cli.CLI, args []string) {
},
}
var cmdBreakPointSet = cli.Leaf{
Descr: "set a monitor point",
F: func(c *cli.CLI, args []string) {
},
}
var cmdBreakPointClr = cli.Leaf{
Descr: "clear a monitor point",
F: func(c *cli.CLI, args []string) {
},
}
var cmdBreakPointShow = cli.Leaf{
Descr: "show the monitor points",
F: func(c *cli.CLI, args []string) {
m := c.User.(*emuApp).mem
c.User.Put(fmt.Sprintf("%s\n", m.DisplayBreakPoints()))
},
}
// memBreakPointMenu submenu items
var memBreakPointMenu = cli.Menu{
{"add", cmdBreakPointAdd, helpBreakPointAdd},
{"clr", cmdBreakPointClr, helpBreakPointSetClr},
{"set", cmdBreakPointSet, helpBreakPointSetClr},
{"show", cmdBreakPointShow},
}
//-----------------------------------------------------------------------------
var helpPageTable = []cli.Help{
{"<va> <mode> <attr>", "address (hex) - default is PC"},
{"", "mode (u/s/m) - cpu mode - default is s(upervisor)"},
{"", "attr (rwxm) - access attribute - default is r(ead)"},
}
var cmdPageTable = cli.Leaf{
Descr: "display a page table walk",
F: func(c *cli.CLI, args []string) {
var err error
cpu := c.User.(*emuApp).cpu
m := c.User.(*emuApp).mem
addr := uint(cpu.PC)
mode := csr.ModeS
attr := mem.AttrR
if len(args) >= 1 {
addr, err = m.AddrArg(args[0])
if err != nil {
c.User.Put(fmt.Sprintf("%s\n", err))
return
}
}
if len(args) >= 2 {
mode, err = csr.ModeArg(args[1])
if err != nil {
c.User.Put(fmt.Sprintf("%s\n", err))
return
}
}
if len(args) >= 3 {
attr, err = mem.AttrArg(args[2])
if err != nil {
c.User.Put(fmt.Sprintf("%s\n", err))
return
}
}
c.User.Put(fmt.Sprintf("%s\n", m.PageTableWalk(addr, mode, attr)))
},
}
//-----------------------------------------------------------------------------
var cmdHost = cli.Leaf{
Descr: "display host state",
F: func(c *cli.CLI, args []string) {
host := c.User.(*emuApp).host
c.User.Put(fmt.Sprintf("%s\n", host))
},
}
//-----------------------------------------------------------------------------
var cmdErrors = cli.Leaf{
Descr: "display emulation errors",
F: func(c *cli.CLI, args []string) {
cpu := c.User.(*emuApp).cpu
c.User.Put(fmt.Sprintf("%s\n", cpu.DisplayErrorBuffer()))
},
}
//-----------------------------------------------------------------------------
// root menu
var menuRoot = cli.Menu{
{"csr", cmdCSR},
{"da", cmdDisassemble, helpDisassemble},
{"errors", cmdErrors},
{"exit", cmdExit},
{"go", cmdGo, helpGo},
{"help", cmdHelp},
{"history", cmdHistory, cli.HistoryHelp},
{"host", cmdHost},
{"map", cmdMap},
{"mm", memBreakPointMenu, "memory monitor functions"},
{"pm", memDisplayPm, "physical memory menu"},
{"pt", cmdPageTable, helpPageTable},
{"rf", cmdFloatRegisters},
{"ri", cmdIntRegisters},
{"reset", cmdReset},
{"step", cmdStep, helpGo},
{"sym", cmdSymbol},
{"trace", cmdTrace, helpGo},
{"vm", memDisplayVm, "virtual memory menu"},
}
//-----------------------------------------------------------------------------