Documentation
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Overview ¶
Package debugger provides an interactive stepping debugger for go6502 with breakpoints on instruction type, register values and memory location.
Example ¶
An example interactive debugging session:
$ go run go6502.go --via-ssd1306 --debug CPU PC:0xF31F AC:0x00 X:0x00 Y:0x00 SP:0x00 SR:--_b-i-- Next: SEI implied $F31F> step CPU PC:0xF320 AC:0x00 X:0x00 Y:0x00 SP:0x00 SR:--_b---- Next: LDX immediate $FF $F320> break-register X $FF Breakpoint set: X = $FF (255) $F320> continue Breakpoint for X = $FF (255) CPU PC:0xF322 AC:0x00 X:0xFF Y:0x00 SP:0x00 SR:n-_b---- Next: TXS implied $F322> step Breakpoint for X = $FF (255) CPU PC:0xF323 AC:0x00 X:0xFF Y:0x00 SP:0xFF SR:n-_b---- Next: CLI implied $F323> Breakpoint for X = $FF (255) CPU PC:0xF324 AC:0x00 X:0xFF Y:0x00 SP:0xFF SR:n-_b-i-- Next: CLD implied $F324> Breakpoint for X = $FF (255) CPU PC:0xF325 AC:0x00 X:0xFF Y:0x00 SP:0xFF SR:n-_b-i-- Next: JMP absolute $F07B $F325> break-instruction nop $F325> r Breakpoint for X = $FF (255) CPU PC:0xF07B AC:0x00 X:0xFF Y:0x00 SP:0xFF SR:n-_b-i-- Next: LDA immediate $00 $F07B> q
Index ¶
Constants ¶
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Variables ¶
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Functions ¶
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Types ¶
type Debugger ¶
type Debugger struct {
// contains filtered or unexported fields
}
func NewDebugger ¶
NewDebugger creates a debugger. Be sure to defer a call to Debugger.Shutdown() afterwards, or your terminal will be left in a broken state.
func (*Debugger) BeforeExecute ¶
func (d *Debugger) BeforeExecute(in cpu.Instruction)
BeforeExecute receives each cpu.Instruction just before the program counter is incremented and the instruction executed.
func (*Debugger) QueueCommands ¶
Queue a list of commands to be executed at the next prompt(s). This is useful for accepting a list of commands as a CLI parameter.
Source Files
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