CODEWITHSUNDEEP
iosxcodearm64
bcattle
bcattle

Reputation: 12839

XCode: Find out what exception was thrown while stopped at an exception breakpoint

I'm stopped at an exception breakpoint. How can I use the LLDB console to tell which exception was thrown?

According to this comment I should be able to type po $r0 to see the exception object "because it is passed as the first argument to objc_exception_throw" but this register doesn't appear to exist on ARM64.

After reading the iOS ABI Function Call Guide I also tried po $x0 but registers x0 through x18 are all empty.

I'm using XCode 5.1, iOS 7.1 on ARM64.

Upvotes: 2

Views: 254

Answers (1)

Jesse Rusak
Jesse Rusak

Reputation: 57188

Are you sure you have the correct stack frame selected (i.e. the objc_exception_throw frame)?

According to this answer, your po $x0 should work.

Upvotes: 1

Related Questions