v8/tools/gdbinit

# Copyright 2014 the V8 project authors. All rights reserved.
# Use of this source code is governed by a BSD-style license that can be
# found in the LICENSE file.

# Print HeapObjects.
define job
call _v8_internal_Print_Object((void*)($arg0))
end
document job
Print a v8 JavaScript object
Usage: job tagged_ptr
end

# Print Code objects containing given PC.
define jco
call _v8_internal_Print_Code((void*)($arg0))
end
document jco
Print a v8 Code object from an internal code address
Usage: jco pc
end

# Print TypeFeedbackVector
define jfv
call _v8_internal_Print_TypeFeedbackVector((void*)($arg0))
end
document jfv
Print a v8 TypeFeedbackVector object
Usage: jtv tagged_ptr
end

# Print DescriptorArray.
define jda
call _v8_internal_Print_DescriptorArray((void*)($arg0))
end
document jda
Print a v8 DescriptorArray object
Usage: jda tagged_ptr
end

# Print TransitionArray.
define jta
call _v8_internal_Print_TransitionArray((void*)($arg0))
end
document jta
Print a v8 TransitionArray object
Usage: jta tagged_ptr
end

# Print JavaScript stack trace.
define jst
call _v8_internal_Print_StackTrace()
end
document jst
Print the current JavaScript stack trace
Usage: jst
end

# Skip the JavaScript stack.
define jss
set $js_entry_sp=v8::internal::Isolate::Current()->thread_local_top()->js_entry_sp_
set $rbp=*(void**)$js_entry_sp
set $rsp=$js_entry_sp + 2*sizeof(void*)
set $pc=*(void**)($js_entry_sp+sizeof(void*))
end
document jss
Skip the jitted stack on x64 to where we entered JS last.
Usage: jss
end

set disassembly-flavor intel
set disable-randomization off