Hello @lolgrep . First i want to say, that 16 chapter is a huge one! Thank you so for it!
But i’m having the issue with the custom disassembler (dd command). I’d use some from your git repo and synced it just this month (after the book update came).
So previously in that chapter i’d used dd and everything’s going well.
But on page 228, where you dump the [UIDebuggingInformationOverlay prepareDebuggingOverlay] assembly with dd, my copy of dd didn’t work.
Here’s what i’m doing here:
methods UIDebuggingInformationOverlay and i get follow output.
<UIDebuggingInformationOverlay: 0x10cf712a0>:
in UIDebuggingInformationOverlay:
Class Methods:
+ (void) prepareDebuggingOverlay; (0x10c58e036)
+ (void) pushDisableApplyingConfigurations; (0x10c58e2e7)
+ (void) popDisableApplyingConfigurations; (0x10c58e2f4)
+ (id) overlay; (0x10c58e1a6)
Properties:
@property (retain, nonatomic) UIEvent* lastTouch; (@synthesize lastTouch = _lastTouch;)
@property (nonatomic) struct CGPoint drawingOrigin; (@synthesize drawingOrigin = _drawingOrigin;)
@property (readonly, nonatomic) UIDebuggingInformationOverlayViewController* overlayViewController;
@property (retain, nonatomic) UIDebuggingInformationRootTableViewController* rootTableViewController;
@property (nonatomic) BOOL checkingTouches; (@synthesize checkingTouches = _checkingTouches;)
@property (nonatomic) BOOL touchCaptureEnabled; (@synthesize touchCaptureEnabled = _touchCaptureEnabled;)
@property (retain, nonatomic) NSMutableArray* touchObservers; (@synthesize touchObservers = _touchObservers;)
@property (retain, nonatomic) UIWindow* inspectedWindow; (@synthesize inspectedWindow = _inspectedWindow;)
Instance Methods:
- (id) hitTest:(struct CGPoint)arg1 withEvent:(id)arg2; (0x10c58e831)
- (id) lastTouch; (0x10c58ef4c)
- (id) inspectedWindow; (0x10c58ef27)
- (void) setInspectedWindow:(id)arg1; (0x10c58ef38)
- (void) setTouchCaptureEnabled:(BOOL)arg1; (0x10c58eef2)
- (id) overlayViewController; (0x10c58e024)
- (void) setCheckingTouches:(BOOL)arg1; (0x10c58eed2)
- (void) toggleFullscreen; (0x10c58e7f4)
- (void) toggleVisibility; (0x10c58e301)
- (void) setRootTableViewController:(id)arg1; (0x10c58ed9a)
- (id) rootTableViewController; (0x10c58ed4a)
- (BOOL) checkingTouches; (0x10c58eec2)
- (id) touchObservers; (0x10c58ef02)
- (void) setLastTouch:(id)arg1; (0x10c58ef5d)
- (BOOL) touchCaptureEnabled; (0x10c58eee2)
- (void) setTouchObservers:(id)arg1; (0x10c58ef13)
- (struct CGPoint) drawingOrigin; (0x10c58ef71)
- (void) setDrawingOrigin:(struct CGPoint)arg1; (0x10c58ef89)
- (void) .cxx_destruct; (0x10c58efa1)
- (id) init; (0x10c58df62)
- (id) initWithFrame:(struct CGRect)arg1; (0x10c58ec9a)
(UIWindow ...)
So as i’m interested in the + (void) prepareDebuggingOverlay; (0x10c58e036) class method, i’d copy its pointer address and try to paste it in dd, like:
dd 0x10c58e036, and get follow ouput:
Traceback (most recent call last):
File "/Volumes/devel/apple/lldb_scripts/release/disassemble.py", line 42, in handle_command
output += generateAssemblyFromSymbol(sym, options)
File "/Volumes/devel/apple/lldb_scripts/release/disassemble.py", line 105, in generateAssemblyFromSymbol
showComments, modName = generateDescriptionByAddress(addr)
File "/Volumes/devel/apple/lldb_scripts/release/disassemble.py", line 186, in generateDescriptionByAddress
idType = ds.getType('id')
AttributeError: 'module' object has no attribute 'getType'
In the same time disassemble -s 0x10c58e036 are working well, i mean it prints out the function of the interests:
UIKit`+[UIDebuggingInformationOverlay prepareDebuggingOverlay]: 0x10c58e036 <+0>: push rbp
0x10c58e037 <+1>: mov rbp, rsp
0x10c58e03a <+4>: push r15
0x10c58e03c <+6>: push r14
0x10c58e03e <+8>: push r13
0x10c58e040 <+10>: push r12
0x10c58e042 <+12>: push rbx
0x10c58e043 <+13>: push rax
0x10c58e044 <+14>: call 0x10c58efe3 ; _UIGetDebuggingOverlayEnabled
0x10c58e049 <+19>: test al, al
0x10c58e04b <+21>: je 0x10c58e154 ; <+286>
Also in the same time dd 0x10c58df62 which is - (id) init; (0x10c58df62) method are doing well either and prints out the colored output in the same lldb session.
Also i mentioned, that problem occurs not only with the prepareDebuggingOverlay method. It also occurs with the - (id) initWithFrame:(struct CGRect)arg1; (0x10c58ec9a) method. Like:
dd 0x10c58ec9a gives the same input:
Traceback (most recent call last):
File "/Volumes/devel/hack/apple/lldb_scripts/release/disassemble.py", line 42, in handle_command
output += generateAssemblyFromSymbol(sym, options)
File "/Volumes/devel/hack/apple/lldb_scripts/release/disassemble.py", line 105, in generateAssemblyFromSymbol
showComments, modName = generateDescriptionByAddress(addr)
File "/Volumes/devel/hack/apple/lldb_scripts/release/disassemble.py", line 186, in generateDescriptionByAddress
idType = ds.getType('id')
AttributeError: 'module' object has no attribute 'getType'
Maybe do you have any idea how to fix it or any workaround that issue, or you’ve mentioned any mistake in my workflow which cause such behaviour?