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cli: add 'jump' command

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Close #2606.
This commit is contained in:
Anna Shaleva 2022-10-12 13:16:19 +03:00
parent 811e09675f
commit 884428ab93
2 changed files with 57 additions and 7 deletions
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46
cli/vm/cli.go
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@ -92,6 +92,15 @@ var commands = []cli.Command{
> break 12`,
Action: handleBreak,
},
{
Name: "jump",
Usage: "Jump to the specified instruction (absolute IP value)",
UsageText: `jump <ip>`,
Description: `jump <ip>
<ip> is mandatory parameter, example:
> jump 12`,
Action: handleJump,
},
{
Name: "estack",
Usage: "Show evaluation stack contents",
@ -559,21 +568,44 @@ func handleBreak(c *cli.Context) error {
if !checkVMIsReady(c.App) {
return nil
}
v := getVMFromContext(c.App)
args := c.Args()
if len(args) != 1 {
return fmt.Errorf("%w: <ip>", ErrMissingParameter)
}
n, err := strconv.Atoi(args[0])
n, err := getInstructionParameter(c)
if err != nil {
return fmt.Errorf("%w: %s", ErrInvalidParameter, err)
return err
}
v := getVMFromContext(c.App)
v.AddBreakPoint(n)
fmt.Fprintf(c.App.Writer, "breakpoint added at instruction %d\n", n)
return nil
}
func handleJump(c *cli.Context) error {
if !checkVMIsReady(c.App) {
return nil
}
n, err := getInstructionParameter(c)
if err != nil {
return err
}
v := getVMFromContext(c.App)
v.Context().Jump(n)
fmt.Fprintf(c.App.Writer, "jumped to instruction %d\n", n)
return nil
}
func getInstructionParameter(c *cli.Context) (int, error) {
args := c.Args()
if len(args) != 1 {
return 0, fmt.Errorf("%w: <ip>", ErrMissingParameter)
}
n, err := strconv.Atoi(args[0])
if err != nil {
return 0, fmt.Errorf("%w: %s", ErrInvalidParameter, err)
}
return n, nil
}
func handleXStack(c *cli.Context) error {
v := getVMFromContext(c.App)
var stackDump string