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#!/usr/bin/env python
import lldb
import re
# Trim trailing numbers on symbols.
#
def trim_basename(name):
return re.sub(r"(caml.*)_[0-9]+", r"\1", name)
# Print backtrace by walking LLDB frames
#
def print_backtrace(debugger, command, result, dict):
"""
Walk process call stack printing out frame names
"""
target = debugger.GetSelectedTarget()
if target:
process = target.GetProcess()
if process:
frame_info = {}
thread = process.GetSelectedThread()
for thread in process:
for frame in thread:
print("frame %i: %s`%s"% (frame.idx, frame.module.file.basename, trim_basename(frame.name)))
else:
result.SetError('No current process for the debugger. Has a process to debug been launched?')
else:
result.SetError('No current target for the debugger. Has a process to debug been launched?')
# Usage:
# (lldb) backtrace
# Create breakpoint at address
# lldb.target.BreakpointCreateByAddress(0x0000000100005ad0)
# Create breakpoint on Regex
# lldb.target.BreakpointCreateByRegex("camlFib.fib_*")
def create_breakpoint(debugger, command, result, dict):
"""
Create breakpoints based on symbol names
"""
target = debugger.GetSelectedTarget()
if target:
breakpoint = target.BreakpointCreateByRegex(command)
if (breakpoint and breakpoint.GetNumLocations() == 1):
print(f"Breakpoint created for regex {command}." )
else:
print(f"No matches for breakpoint regex {command}.")
result.SetError(f"No matches for breakpoint regex {command}.")
else:
result.SetError('No current target for the debugger. Has a process to debug been launched?')
def __lldb_init_module(debugger, internal_dict):
# Install commands for printing backtrace and setting breakpoints
debugger.HandleCommand('command script add -f %s.print_backtrace backtrace' % __name__)
debugger.HandleCommand('command script add -f %s.create_breakpoint create' % __name__)
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