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List: soot-list
Subject: Re: [Soot-list] Soot JCmpExpr, JCmpgExpr,JCmplExpr statements
From: "Steven Arzt" <Steven.Arzt () cased ! de>
Date: 2015-03-30 13:11:36
Message-ID: 012201d06aeb$0d39e060$27ada120$ () cased ! de
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Hi Christian,
The comparison expressions compare two numeric values. In your example, l0
is checked against zero. If the value in l0 is zero, $b3 is set to true,
otherwise it is set to false. The “if” condition evaluates this variable and
either falls through to the next statement or jumps to some other statement
father away.
Best regards,
Steven
Von: soot-list-bounces@CS.McGill.CA [mailto:soot-list-bounces@CS.McGill.CA]
Im Auftrag von christian.grosse@comhem.se
Gesendet: Montag, 30. März 2015 14:17
An: soot-list@CS.McGill.CA
Betreff: [Soot-list] Soot JCmpExpr, JCmpgExpr,JCmplExpr statements
Hi everyone,
I have a question about: JCmpExpr(and perhaps JCmpgExpr,JCmplExpr)
statements.
For example i get this generated Jimple code:
.
.
.
$b3 = l0 cmp 0L; <JCmpExpr>
if ($b3 != 0) <JIfStmt>
.
.
.
I am not sure how to interpret this code segment. What is stored in the $b3
variable? Is it a comparison for equality? Are the JCmpExpr, JCmpgExpr and
JCmplExpr always followed by a JIfStmt in Jimple? Any and all help would be
appreciated! Smile
Best regards,
Christian G.
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class=WordSection1><p class=MsoNormal><span lang=EN-US \
style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'>Hi \
Christian,<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US \
style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'><o:p> </o:p></span></p><p \
class=MsoNormal><span lang=EN-US \
style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'>The \
comparison expressions compare two numeric values. In your example, l0 is checked \
against zero. If the value in l0 is zero, $b3 is set to true, otherwise it is set to \
false. The “if” condition evaluates this variable and either falls \
through to the next statement or jumps to some other statement father \
away.<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US \
style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'><br>Best \
regards,<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US \
style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'> \
Steven<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US \
style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'><o:p> </o:p></span></p><div><div \
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class=MsoNormal><b><span lang=EN-US \
style='font-size:10.0pt;font-family:"Tahoma","sans-serif"'>Von:</span></b><span \
lang=EN-US style='font-size:10.0pt;font-family:"Tahoma","sans-serif"'> \
soot-list-bounces@CS.McGill.CA [mailto:soot-list-bounces@CS.McGill</span><span \
style='font-size:10.0pt;font-family:"Tahoma","sans-serif"'>.CA] <b>Im Auftrag von \
</b>christian.grosse@comhem.se<br><b>Gesendet:</b> Montag, 30. März 2015 \
14:17<br><b>An:</b> soot-list@CS.McGill.CA<br><b>Betreff:</b> [Soot-list] Soot \
JCmpExpr, JCmpgExpr,JCmplExpr statements<o:p></o:p></span></p></div></div><p \
class=MsoNormal><o:p> </o:p></p><div><div><div><div><div><p \
class=MsoNormal><span style='color:black'>Hi everyone,</span><span \
style='font-family:"Calibri","sans-serif";color:black'><o:p></o:p></span></p></div><div><p \
class=MsoNormal><span style='color:black'>I have a question about: JCmpExpr(and \
perhaps JCmpgExpr,JCmplExpr) statements. </span><span \
style='font-family:"Calibri","sans-serif";color:black'><o:p></o:p></span></p></div><div><p \
class=MsoNormal><span \
style='font-family:"Calibri","sans-serif";color:black'> <o:p></o:p></span></p></div><div><p \
class=MsoNormal><span style='color:black'>For example i get this generated Jimple \
code:<br>.<br>.<br>.<br>$b3 = l0 cmp 0L; \
<JCmpExpr><br>if ($b3 != \
0) \
<JIfStmt><br>.<br>.<br>.</span><span \
style='font-family:"Calibri","sans-serif";color:black'><br><br>I am not sure how to \
</span><span style='color:black'>interpret this code segment. What is stored in the \
$b3 variable? Is it a comparison for equality? Are the JCmpExpr, JCmpgExpr and \
JCmplExpr always followed by a JIfStmt in Jimple? Any and all help would be \
appreciated! <img width=19 height=19 id="_x0000_i1025" \
src="cid:image001.png@01D06AFB.D0A3B6B0" alt=Smile></span><span \
style='font-family:"Calibri","sans-serif";color:black'><o:p></o:p></span></p></div><div><p \
class=MsoNormal><span \
style='font-family:"Calibri","sans-serif";color:black'> <o:p></o:p></span></p></div><div><p \
class=MsoNormal><span style='color:black'>Best regards,</span><span \
style='font-family:"Calibri","sans-serif";color:black'><br></span><span \
style='color:black'>Christian G.</span><span \
style='font-family:"Calibri","sans-serif";color:black'><o:p></o:p></span></p></div></div></div></div></div></div></body></html>
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