113 lines
4.5 KiB
Python
Executable File
113 lines
4.5 KiB
Python
Executable File
#!/usr/bin/env python
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#coding: utf-8
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#
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# Usage: run `command script import -r misc/lldb_cruby.py` on LLDB
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#
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import lldb
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import commands
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import os
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import shlex
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def lldb_init(debugger):
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target = debugger.GetSelectedTarget()
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global SIZEOF_VALUE
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SIZEOF_VALUE = target.FindFirstType("VALUE").GetByteSize()
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g = globals()
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for enum in target.FindFirstGlobalVariable('ruby_dummy_gdb_enums'):
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enum = enum.GetType()
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members = enum.GetEnumMembers()
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for i in xrange(0, members.GetSize()):
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member = members.GetTypeEnumMemberAtIndex(i)
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name = member.GetName()
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value = member.GetValueAsUnsigned()
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g[name] = value
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def fixnum_p(x):
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return x & RUBY_FIXNUM_FLAG != 0
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def flonum_p(x):
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return (x&RUBY_FLONUM_MASK) == RUBY_FLONUM_FLAG
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def lldb_rp(debugger, command, result, internal_dict):
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target = debugger.GetSelectedTarget()
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process = target.GetProcess()
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thread = process.GetSelectedThread()
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frame = thread.GetSelectedFrame()
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if frame.IsValid():
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val = frame.EvaluateExpression(command)
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else:
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val = target.EvaluateExpression(command)
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error = val.GetError()
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if error.Fail():
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print >> result, error
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return
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num = val.GetValueAsSigned()
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if num == RUBY_Qfalse:
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print >> result, 'false'
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elif num == RUBY_Qtrue:
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print >> result, 'true'
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elif num == RUBY_Qnil:
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print >> result, 'nil'
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elif num == RUBY_Qundef:
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print >> result, 'undef'
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elif fixnum_p(num):
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print >> result, num >> 1
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elif flonum_p(num):
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debugger.HandleCommand("print rb_float_value(%0#x)" % val.GetValueAsUnsigned())
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elif num & RUBY_IMMEDIATE_MASK:
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print >> result, 'immediate(%x)' % num
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else:
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tRBasic = target.FindFirstType("struct RBasic").GetPointerType()
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val = val.Cast(tRBasic)
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flags = val.GetValueForExpressionPath("->flags").GetValueAsUnsigned()
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if (flags & RUBY_FL_PROMOTED) == RUBY_FL_PROMOTED:
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print >> result, "[PROMOTED] "
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flType = flags & RUBY_T_MASK
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if flType == RUBY_T_NONE:
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print >> result, 'T_NONE: %s' % val.Dereference()
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elif flType == RUBY_T_NIL:
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print >> result, 'T_NIL: %s' % val.Dereference()
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elif flType == RUBY_T_OBJECT:
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tRObject = target.FindFirstType("struct RObject").GetPointerType()
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val = val.Cast(tRObject)
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print >> result, 'T_OBJECT: %s' % val.Dereference()
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elif flType == RUBY_T_STRING:
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tRString = target.FindFirstType("struct RString").GetPointerType()
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val = val.Cast(tRString)
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if flags & RSTRING_NOEMBED:
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print >> result, val.GetValueForExpressionPath("->as.heap")
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else:
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print >> result, val.GetValueForExpressionPath("->as.ary")
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elif flType == RUBY_T_ARRAY:
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tRArray = target.FindFirstType("struct RArray").GetPointerType()
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val = val.Cast(tRArray)
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if flags & RUBY_FL_USER1:
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len = ((flags & (RUBY_FL_USER3|RUBY_FL_USER4)) >> (RUBY_FL_USHIFT+3))
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print >> result, "T_ARRAY: len=%d (embed)" % len
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if len == 0:
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print >> result, "{(empty)}"
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else:
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print >> result, val.GetValueForExpressionPath("->as.ary")
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else:
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len = val.GetValueForExpressionPath("->as.heap.len").GetValueAsSigned()
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print >> result, "T_ARRAY: len=%d " % len
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#print >> result, val.GetValueForExpressionPath("->as.heap")
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if flags & RUBY_FL_USER2:
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shared = val.GetValueForExpressionPath("->as.heap.aux.shared").GetValueAsUnsigned()
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print >> result, "(shared) shared=%016x " % shared
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else:
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capa = val.GetValueForExpressionPath("->as.heap.aux.capa").GetValueAsSigned()
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print >> result, "(ownership) capa=%d " % capa
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if len == 0:
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print >> result, "{(empty)}"
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else:
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debugger.HandleCommand("expression -Z %d -fx -- (const VALUE*)((struct RArray*)%d)->as.heap.ptr" % (len, val.GetValueAsUnsigned()))
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debugger.HandleCommand("p (struct RArray *) %0#x" % val.GetValueAsUnsigned())
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def __lldb_init_module(debugger, internal_dict):
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debugger.HandleCommand("command script add -f lldb_cruby.lldb_rp rp")
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lldb_init(debugger)
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print "lldb scripts for ruby has been installed."
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