Thread: [xmlvm-users] missing instruction

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Hello all

I was using some float->byte conversion and I got this exception:
 'XMLVM missing byte code instruction', reason: 'dex:rem-float-2addr'

How can this be mplemented?

documentation for DEX instructions can be found here:
http://www.netmite.com/android/mydroid/dalvik/docs/dalvik-bytecode.html

"Floating point remainder after division. This function is different 
than IEEE 754 remainder and is defined as result == a - 
roundTowardZero(a / b) * b"

On 4/3/11 3:40 PM, Panayotis Katsaloulis wrote:
> Hello all
>
> I was using some float->byte conversion and I got this exception:
>   'XMLVM missing byte code instruction', reason: 'dex:rem-float-2addr'
>
> How can this be mplemented?
>
>
>
> ------------------------------------------------------------------------------
> Create and publish websites with WebMatrix
> Use the most popular FREE web apps or write code yourself;
> WebMatrix provides all the features you need to develop and
> publish your website. http://p.sf.net/sfu/ms-webmatrix-sf
> _______________________________________________
> xmlvm-users mailing list
> xml...@li...
> https://lists.sourceforge.net/lists/listinfo/xmlvm-users

My guess is something like this:

<xsl:template match="dex:rem-float|dex:rem-float-2addr">
  <xsl:text>    _r</xsl:text>
  <xsl:value-of select="@vx"/>
  <xsl:text>.f = _r</xsl:text>
  <xsl:value-of select="@vy"/>
  <xsl:text>.f % _r</xsl:text>
  <xsl:value-of select="@vz"/>
  <xsl:text>.f;
</xsl:text>
</xsl:template>

Although I am a bit puzzled that we implemented these 2addr instructions
like this so far, as they should only have two registers. Will double check.

// Sascha

On Mon, Apr 4, 2011 at 12:40 AM, Panayotis Katsaloulis <
pan...@pa...> wrote:

> Hello all
>
> I was using some float->byte conversion and I got this exception:
>  'XMLVM missing byte code instruction', reason: 'dex:rem-float-2addr'
>
> How can this be mplemented?
>
>
>
>
> ------------------------------------------------------------------------------
> Create and publish websites with WebMatrix
> Use the most popular FREE web apps or write code yourself;
> WebMatrix provides all the features you need to develop and
> publish your website. http://p.sf.net/sfu/ms-webmatrix-sf
> _______________________________________________
> xmlvm-users mailing list
> xml...@li...
> https://lists.sourceforge.net/lists/listinfo/xmlvm-users
>

actually,

result == a - truncf(a / b) * b.

<xsl:template match="dex:rem-float|dex:rem-float-2addr">
   <xsl:text>    _r</xsl:text>
   <xsl:value-of select="@vx"/>
   <xsl:text>.f = _r</xsl:text>
   <xsl:value-of select="@vy"/>
   <xsl:text>.f - truncf(_r</xsl:text>
   <xsl:value-of select="@vy"/>
   <xsl:text>.f / _r</xsl:text>
   <xsl:value-of select="@vz"/>
   <xsl:text>.f) * _r</xsl:text>
   <xsl:value-of select="@vz"/>
   <xsl:text>.f;&nl;</xsl:text>
</xsl:template>

Panayotis: can you please add this to the ObjC stylesheet and I will do 
this for the C stylesheet (I have some other uncommitted changes so it 
is not convenient for me to commit).

Arno

On 4/3/11 3:49 PM, Sascha Haeberling wrote:
> My guess is something like this:
>
> <xsl:template match="dex:rem-float|dex:rem-float-2addr">
> <xsl:text>    _r</xsl:text>
> <xsl:value-of select="@vx"/>
> <xsl:text>.f = _r</xsl:text>
> <xsl:value-of select="@vy"/>
> <xsl:text>.f % _r</xsl:text>
> <xsl:value-of select="@vz"/>
> <xsl:text>.f;
> </xsl:text>
> </xsl:template>
>
> Although I am a bit puzzled that we implemented these 2addr instructions
> like this so far, as they should only have two registers. Will double check.
>
> // Sascha
>
> On Mon, Apr 4, 2011 at 12:40 AM, Panayotis Katsaloulis
> <pan...@pa... <mailto:pan...@pa...>> wrote:
>
>     Hello all
>
>     I was using some float->byte conversion and I got this exception:
>     'XMLVM missing byte code instruction', reason: 'dex:rem-float-2addr'
>
>     How can this be mplemented?
>
>
>
>     ------------------------------------------------------------------------------
>     Create and publish websites with WebMatrix
>     Use the most popular FREE web apps or write code yourself;
>     WebMatrix provides all the features you need to develop and
>     publish your website. http://p.sf.net/sfu/ms-webmatrix-sf
>     _______________________________________________
>     xmlvm-users mailing list
>     xml...@li...
>     <mailto:xml...@li...>
>     https://lists.sourceforge.net/lists/listinfo/xmlvm-users
>
>
>
>
> ------------------------------------------------------------------------------
> Create and publish websites with WebMatrix
> Use the most popular FREE web apps or write code yourself;
> WebMatrix provides all the features you need to develop and
> publish your website. http://p.sf.net/sfu/ms-webmatrix-sf
>
>
>
> _______________________________________________
> xmlvm-users mailing list
> xml...@li...
> https://lists.sourceforge.net/lists/listinfo/xmlvm-users

On Apr 4, 2011, at 2:02 AM, Arno Puder wrote:

> 
> actually,
> 
> result == a - truncf(a / b) * b.
> 
> <xsl:template match="dex:rem-float|dex:rem-float-2addr">
>   <xsl:text>    _r</xsl:text>
>   <xsl:value-of select="@vx"/>
>   <xsl:text>.f = _r</xsl:text>
>   <xsl:value-of select="@vy"/>
>   <xsl:text>.f - truncf(_r</xsl:text>
>   <xsl:value-of select="@vy"/>
>   <xsl:text>.f / _r</xsl:text>
>   <xsl:value-of select="@vz"/>
>   <xsl:text>.f) * _r</xsl:text>
>   <xsl:value-of select="@vz"/>
>   <xsl:text>.f;&nl;</xsl:text>
> </xsl:template>
> 
> Panayotis: can you please add this to the ObjC stylesheet and I will do 
> this for the C stylesheet (I have some other uncommitted changes so it 
> is not convenient for me to commit).
> 
> Arno

No problem

If this works, you should be also able to do this with double (replace .f
with .d and truncf with tunc).

On Mon, Apr 4, 2011 at 1:17 AM, Panayotis Katsaloulis <
pan...@pa...> wrote:

>
> On Apr 4, 2011, at 2:02 AM, Arno Puder wrote:
>
> >
> > actually,
> >
> > result == a - truncf(a / b) * b.
> >
> > <xsl:template match="dex:rem-float|dex:rem-float-2addr">
> >   <xsl:text>    _r</xsl:text>
> >   <xsl:value-of select="@vx"/>
> >   <xsl:text>.f = _r</xsl:text>
> >   <xsl:value-of select="@vy"/>
> >   <xsl:text>.f - truncf(_r</xsl:text>
> >   <xsl:value-of select="@vy"/>
> >   <xsl:text>.f / _r</xsl:text>
> >   <xsl:value-of select="@vz"/>
> >   <xsl:text>.f) * _r</xsl:text>
> >   <xsl:value-of select="@vz"/>
> >   <xsl:text>.f;&nl;</xsl:text>
> > </xsl:template>
> >
> > Panayotis: can you please add this to the ObjC stylesheet and I will do
> > this for the C stylesheet (I have some other uncommitted changes so it
> > is not convenient for me to commit).
> >
> > Arno
>
>
> No problem
>
>
>
> ------------------------------------------------------------------------------
> Create and publish websites with WebMatrix
> Use the most popular FREE web apps or write code yourself;
> WebMatrix provides all the features you need to develop and
> publish your website. http://p.sf.net/sfu/ms-webmatrix-sf
> _______________________________________________
> xmlvm-users mailing list
> xml...@li...
> https://lists.sourceforge.net/lists/listinfo/xmlvm-users
>

On 04 Απρ 2011, at 2:25 π.μ., Sascha Haeberling wrote:

> If this works, you should be also able to do this with double (replace .f with .d and truncf with tunc).

No, it doesn't work, I get this exception when parsing 

 ERROR: XsltRunner: Could not create transformer for xmlvm2objc.xsl: Failed to compile stylesheet. 1 error detected.
Exception in thread "main" java.lang.reflect.InvocationTargetException
	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
	at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
	at java.lang.reflect.Method.invoke(Method.java:597)
	at com.simontuffs.onejar.Boot.run(Boot.java:306)
	at com.simontuffs.onejar.Boot.main(Boot.java:159)
Caused by: java.lang.NullPointerException
	at org.xmlvm.proc.XsltRunner.runXSLT(XsltRunner.java:87)
	at org.xmlvm.proc.out.ObjectiveCOutputProcess.genObjC(ObjectiveCOutputProcess.java:100)
	at org.xmlvm.proc.out.ObjectiveCOutputProcess.process(ObjectiveCOutputProcess.java:59)
	at org.xmlvm.proc.XmlvmProcessImpl.preprocess(XmlvmProcessImpl.java:212)
	at org.xmlvm.proc.out.IPhoneOutputProcess.process(IPhoneOutputProcess.java:65)
	at org.xmlvm.proc.XmlvmProcessor.process(XmlvmProcessor.java:139)
	at org.xmlvm.Main.main(Main.java:54)
	... 6 more
/Users/teras/Works/Development/Mobile/Active/EggWars/nbproject/xcode.xml:179: The following error occurred while executing this line:
/Users/teras/Works/Development/Mobile/Active/EggWars/nbproject/xcode.xml:99: Java returned: 1