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Initial commit of LLDB port of debug utility
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@58927 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
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naruse
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138
misc/lldb_cruby.py
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138
misc/lldb_cruby.py
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#!/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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RUBY_T_NONE = 0x00
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RUBY_T_OBJECT = 0x01
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RUBY_T_CLASS = 0x02
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RUBY_T_MODULE = 0x03
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RUBY_T_FLOAT = 0x04
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RUBY_T_STRING = 0x05
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RUBY_T_REGEXP = 0x06
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RUBY_T_ARRAY = 0x07
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RUBY_T_HASH = 0x08
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RUBY_T_STRUCT = 0x09
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RUBY_T_BIGNUM = 0x0a
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RUBY_T_FILE = 0x0b
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RUBY_T_DATA = 0x0c
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RUBY_T_MATCH = 0x0d
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RUBY_T_COMPLEX = 0x0e
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RUBY_T_RATIONAL = 0x0f
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RUBY_T_NIL = 0x11
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RUBY_T_TRUE = 0x12
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RUBY_T_FALSE = 0x13
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RUBY_T_SYMBOL = 0x14
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RUBY_T_FIXNUM = 0x15
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RUBY_T_UNDEF = 0x16
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RUBY_T_IMEMO = 0x1a
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RUBY_T_NODE = 0x1b
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RUBY_T_ICLASS = 0x1c
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RUBY_T_ZOMBIE = 0x1d
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RUBY_T_MASK = 0x1f
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RUBY_FL_WB_PROTECTED = (1<<5)
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RUBY_FL_PROMOTED0 = (1<<5)
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RUBY_FL_PROMOTED1 = (1<<6)
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RUBY_FL_PROMOTED = RUBY_FL_PROMOTED0|RUBY_FL_PROMOTED1
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RUBY_FL_FINALIZE = (1<<7)
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RUBY_FL_TAINT = (1<<8)
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RUBY_FL_UNTRUSTED = RUBY_FL_TAINT
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RUBY_FL_EXIVAR = (1<<10)
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RUBY_FL_FREEZE = (1<<11)
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RUBY_FL_USHIFT = 12
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RUBY_FL_USER0 = (1<<(RUBY_FL_USHIFT+0))
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RUBY_FL_USER1 = (1<<(RUBY_FL_USHIFT+1))
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RUBY_FL_USER2 = (1<<(RUBY_FL_USHIFT+2))
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RUBY_FL_USER3 = (1<<(RUBY_FL_USHIFT+3))
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RUBY_FL_USER4 = (1<<(RUBY_FL_USHIFT+4))
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RUBY_FL_USER5 = (1<<(RUBY_FL_USHIFT+5))
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RUBY_FL_USER6 = (1<<(RUBY_FL_USHIFT+6))
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RUBY_FL_USER7 = (1<<(RUBY_FL_USHIFT+7))
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RUBY_FL_USER8 = (1<<(RUBY_FL_USHIFT+8))
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RUBY_FL_USER9 = (1<<(RUBY_FL_USHIFT+9))
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RUBY_FL_USER10 = (1<<(RUBY_FL_USHIFT+10))
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RUBY_FL_USER11 = (1<<(RUBY_FL_USHIFT+11))
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RUBY_FL_USER12 = (1<<(RUBY_FL_USHIFT+12))
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RUBY_FL_USER13 = (1<<(RUBY_FL_USHIFT+13))
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RUBY_FL_USER14 = (1<<(RUBY_FL_USHIFT+14))
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RUBY_FL_USER15 = (1<<(RUBY_FL_USHIFT+15))
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RUBY_FL_USER16 = (1<<(RUBY_FL_USHIFT+16))
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RUBY_FL_USER17 = (1<<(RUBY_FL_USHIFT+17))
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RUBY_FL_USER18 = (1<<(RUBY_FL_USHIFT+18))
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RUBY_FL_USER19 = (1<<(RUBY_FL_USHIFT+19))
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RSTRING_NOEMBED = RUBY_FL_USER1
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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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val = frame.EvaluateExpression(command)
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num = val.GetValueAsSigned()
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if num == 0:
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print('false')
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elif num == 0x14:
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print('nil')
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elif num == 8:
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print('nil')
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elif num == 0x34:
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print('Qundef')
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elif num & 1 != 0:
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print(num >> 1)
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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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flType = flags & RUBY_T_MASK
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if 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(val.GetValueForExpressionPath("->as.heap"))
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else:
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print(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("T_ARRAY: len=%d (embed)" % len)
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if len == 0:
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print "{(empty)}"
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else:
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print(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("T_ARRAY: len=%d " % len)
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#print(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 "(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 "(ownership) capa=%d " % capa
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if len == 0:
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print "{(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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print "lldb scripts for ruby has been installed."
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