1berry/ruby
1
0
Fork 0
Code Issues Packages Projects Releases Wiki Activity

add rb_id2str to lldb debugging scripts

Browse Source
This commit is contained in:
Aaron Patterson 2021-05-24 16:02:17 -07:00
parent 4aaa98e626
commit 45ddefb14a
No known key found for this signature in database
GPG Key ID: 953170BCB4FFAFC6
1 changed files with 46 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

46
misc/lldb_cruby.py
View File

@ -655,6 +655,51 @@ def ruby_types(debugger):
return types return types
def rb_ary_entry(target, ary, idx, result):
tRArray = target.FindFirstType("struct RArray").GetPointerType()
ary = ary.Cast(tRArray)
flags = ary.GetValueForExpressionPath("->flags").GetValueAsUnsigned()
if flags & RUBY_FL_USER1:
ptr = ary.GetValueForExpressionPath("->as.ary")
else:
ptr = ary.GetValueForExpressionPath("->as.heap.ptr")
ptr_addr = ptr.GetValueAsUnsigned() + (idx * ptr.GetType().GetByteSize())
return target.CreateValueFromAddress("ary_entry[%d]" % idx, lldb.SBAddress(ptr_addr, target), ptr.GetType().GetPointeeType())
def rb_id_to_serial(id_val):
if id_val > tLAST_OP_ID:
return id_val >> RUBY_ID_SCOPE_SHIFT
else:
return id_val
def rb_id2str(debugger, command, result, internal_dict):
if not ('RUBY_Qfalse' in globals()):
lldb_init(debugger)
target = debugger.GetSelectedTarget()
process = target.GetProcess()
thread = process.GetSelectedThread()
frame = thread.GetSelectedFrame()
global_symbols = target.FindFirstGlobalVariable("ruby_global_symbols")
id_val = frame.EvaluateExpression(command).GetValueAsUnsigned()
num = rb_id_to_serial(id_val)
last_id = global_symbols.GetChildMemberWithName("last_id").GetValueAsUnsigned()
ID_ENTRY_SIZE = 2
ID_ENTRY_UNIT = int(target.FindFirstGlobalVariable("ID_ENTRY_UNIT").GetValue())
ids = global_symbols.GetChildMemberWithName("ids")
if (num <= last_id):
idx = num // ID_ENTRY_UNIT
ary = rb_ary_entry(target, ids, idx, result)
pos = (num % ID_ENTRY_UNIT) * ID_ENTRY_SIZE
id_str = rb_ary_entry(target, ary, pos, result)
lldb_inspect(debugger, target, result, id_str)
def __lldb_init_module(debugger, internal_dict): def __lldb_init_module(debugger, internal_dict):
debugger.HandleCommand("command script add -f lldb_cruby.lldb_rp rp") debugger.HandleCommand("command script add -f lldb_cruby.lldb_rp rp")
debugger.HandleCommand("command script add -f lldb_cruby.count_objects rb_count_objects") debugger.HandleCommand("command script add -f lldb_cruby.count_objects rb_count_objects")
@ -665,6 +710,7 @@ def __lldb_init_module(debugger, internal_dict):
debugger.HandleCommand("command script add -f lldb_cruby.rb_backtrace rbbt") debugger.HandleCommand("command script add -f lldb_cruby.rb_backtrace rbbt")
debugger.HandleCommand("command script add -f lldb_cruby.dump_page dump_page") debugger.HandleCommand("command script add -f lldb_cruby.dump_page dump_page")
debugger.HandleCommand("command script add -f lldb_cruby.dump_page_rvalue dump_page_rvalue") debugger.HandleCommand("command script add -f lldb_cruby.dump_page_rvalue dump_page_rvalue")
debugger.HandleCommand("command script add -f lldb_cruby.rb_id2str rb_id2str")
lldb_init(debugger) lldb_init(debugger)
print("lldb scripts for ruby has been installed.") print("lldb scripts for ruby has been installed.")