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#!/usr/bin/env python
#coding: utf-8
#
# Usage: run `command script import -r misc/lldb_cruby.py` on LLDB
#
import lldb
import commands
import os
import shlex
RUBY_T_NONE = 0x00
RUBY_T_OBJECT = 0x01
RUBY_T_CLASS = 0x02
RUBY_T_MODULE = 0x03
RUBY_T_FLOAT = 0x04
RUBY_T_STRING = 0x05
RUBY_T_REGEXP = 0x06
RUBY_T_ARRAY = 0x07
RUBY_T_HASH = 0x08
RUBY_T_STRUCT = 0x09
RUBY_T_BIGNUM = 0x0a
RUBY_T_FILE = 0x0b
RUBY_T_DATA = 0x0c
RUBY_T_MATCH = 0x0d
RUBY_T_COMPLEX = 0x0e
RUBY_T_RATIONAL = 0x0f
RUBY_T_NIL = 0x11
RUBY_T_TRUE = 0x12
RUBY_T_FALSE = 0x13
RUBY_T_SYMBOL = 0x14
RUBY_T_FIXNUM = 0x15
RUBY_T_UNDEF = 0x16
RUBY_T_IMEMO = 0x1a
RUBY_T_NODE = 0x1b
RUBY_T_ICLASS = 0x1c
RUBY_T_ZOMBIE = 0x1d
RUBY_T_MASK = 0x1f
RUBY_FL_WB_PROTECTED = (1<<5)
RUBY_FL_PROMOTED0 = (1<<5)
RUBY_FL_PROMOTED1 = (1<<6)
RUBY_FL_PROMOTED = RUBY_FL_PROMOTED0|RUBY_FL_PROMOTED1
RUBY_FL_FINALIZE = (1<<7)
RUBY_FL_TAINT = (1<<8)
RUBY_FL_UNTRUSTED = RUBY_FL_TAINT
RUBY_FL_EXIVAR = (1<<10)
RUBY_FL_FREEZE = (1<<11)
RUBY_FL_USHIFT = 12
RUBY_FL_USER0 = (1<<(RUBY_FL_USHIFT+0))
RUBY_FL_USER1 = (1<<(RUBY_FL_USHIFT+1))
RUBY_FL_USER2 = (1<<(RUBY_FL_USHIFT+2))
RUBY_FL_USER3 = (1<<(RUBY_FL_USHIFT+3))
RUBY_FL_USER4 = (1<<(RUBY_FL_USHIFT+4))
RUBY_FL_USER5 = (1<<(RUBY_FL_USHIFT+5))
RUBY_FL_USER6 = (1<<(RUBY_FL_USHIFT+6))
RUBY_FL_USER7 = (1<<(RUBY_FL_USHIFT+7))
RUBY_FL_USER8 = (1<<(RUBY_FL_USHIFT+8))
RUBY_FL_USER9 = (1<<(RUBY_FL_USHIFT+9))
RUBY_FL_USER10 = (1<<(RUBY_FL_USHIFT+10))
RUBY_FL_USER11 = (1<<(RUBY_FL_USHIFT+11))
RUBY_FL_USER12 = (1<<(RUBY_FL_USHIFT+12))
RUBY_FL_USER13 = (1<<(RUBY_FL_USHIFT+13))
RUBY_FL_USER14 = (1<<(RUBY_FL_USHIFT+14))
RUBY_FL_USER15 = (1<<(RUBY_FL_USHIFT+15))
RUBY_FL_USER16 = (1<<(RUBY_FL_USHIFT+16))
RUBY_FL_USER17 = (1<<(RUBY_FL_USHIFT+17))
RUBY_FL_USER18 = (1<<(RUBY_FL_USHIFT+18))
RUBY_FL_USER19 = (1<<(RUBY_FL_USHIFT+19))
RSTRING_NOEMBED = RUBY_FL_USER1
def lldb_rp(debugger, command, result, internal_dict):
target = debugger.GetSelectedTarget()
process = target.GetProcess()
thread = process.GetSelectedThread()
frame = thread.GetSelectedFrame()
val = frame.EvaluateExpression(command)
num = val.GetValueAsSigned()
if num == 0:
print('false')
elif num == 0x14:
print('nil')
elif num == 8:
print('nil')
elif num == 0x34:
print('Qundef')
elif num & 1 != 0:
print(num >> 1)
else:
tRBasic = target.FindFirstType("struct RBasic").GetPointerType()
val = val.Cast(tRBasic)
flags = val.GetValueForExpressionPath("->flags").GetValueAsUnsigned()
flType = flags & RUBY_T_MASK
if flType == RUBY_T_STRING:
tRString = target.FindFirstType("struct RString").GetPointerType()
val = val.Cast(tRString)
if flags & RSTRING_NOEMBED:
print(val.GetValueForExpressionPath("->as.heap"))
else:
print(val.GetValueForExpressionPath("->as.ary"))
elif flType == RUBY_T_ARRAY:
tRArray = target.FindFirstType("struct RArray").GetPointerType()
val = val.Cast(tRArray)
if flags & RUBY_FL_USER1:
len = ((flags & (RUBY_FL_USER3|RUBY_FL_USER4)) >> (RUBY_FL_USHIFT+3))
print("T_ARRAY: len=%d (embed)" % len)
if len == 0:
print "{(empty)}"
else:
print(val.GetValueForExpressionPath("->as.ary"))
else:
len = val.GetValueForExpressionPath("->as.heap.len").GetValueAsSigned()
print("T_ARRAY: len=%d " % len)
#print(val.GetValueForExpressionPath("->as.heap"))
if flags & RUBY_FL_USER2:
shared = val.GetValueForExpressionPath("->as.heap.aux.shared").GetValueAsUnsigned()
print "(shared) shared=%016x " % shared
else:
capa = val.GetValueForExpressionPath("->as.heap.aux.capa").GetValueAsSigned()
print "(ownership) capa=%d " % capa
if len == 0:
print "{(empty)}"
else:
debugger.HandleCommand("expression -Z %d -fx -- (const VALUE*)((struct RArray*)%d)->as.heap.ptr" % (len, val.GetValueAsUnsigned()))
debugger.HandleCommand("p (struct RArray *) %0#x" % val.GetValueAsUnsigned())
def __lldb_init_module(debugger, internal_dict):
debugger.HandleCommand("command script add -f lldb_cruby.lldb_rp rp")
print "lldb scripts for ruby has been installed."
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