[Bug libc/986] New: getcontext, setcontext, swapcontext are not implemeted for e500

[Bug libc/986] New: getcontext, setcontext, swapcontext are not implemeted for e500

[dtemirbulatov at ru dot mvista dot com]

Such functions don`t work correctly because fpu model is different for e500. For
example by calling getcontext function the process terminates with illegal
instruction error.

-- 
           Summary: getcontext, setcontext, swapcontext are not implemeted
                    for e500
           Product: glibc
           Version: 2.3.5
            Status: NEW
          Severity: normal
          Priority: P1
         Component: libc
        AssignedTo: gotom at debian dot or dot jp
        ReportedBy: dtemirbulatov at ru dot mvista dot com
                CC: amodra at bigpond dot net dot au,glibc-bugs at sources
                    dot redhat dot com


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[Bug libc/986] getcontext, setcontext, swapcontext are not implemeted for e500

[dtemirbulatov at ru dot mvista dot com]

------- Additional Comments From dtemirbulatov at ru dot mvista dot com  2005-05-31 19:23 -------
Created an attachment (id=502)
 --> (http://sources.redhat.com/bugzilla/attachment.cgi?id=502&action=view)
proposed patch


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[Bug libc/986] getcontext, setcontext, swapcontext are not implemeted for e500

[guptan at hotmail dot com]

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           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |guptan at hotmail dot com


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[Bug libc/986] getcontext, setcontext, swapcontext are not implemeted for e500

[guptan at hotmail dot com]

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           What    |Removed                     |Added
----------------------------------------------------------------------------
  GCC build triplet|                            |kumar,corey


http://sources.redhat.com/bugzilla/show_bug.cgi?id=986

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[Bug libc/986] getcontext, setcontext, swapcontext are not implemeted for e500

[guptan at hotmail dot com]

-- 
           What    |Removed                     |Added
----------------------------------------------------------------------------
  GCC build triplet|kumar,corey                 |


http://sources.redhat.com/bugzilla/show_bug.cgi?id=986

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[Bug libc/986] getcontext, setcontext, swapcontext are not implemeted for e500

[dtemirbulatov at ru dot mvista dot com]

-- 
           What    |Removed                     |Added
----------------------------------------------------------------------------
   GCC host triplet|                            |i686-pc-linux-gnu
 GCC target triplet|                            |powerpc-linux-gnuspe


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[Bug libc/986] getcontext, setcontext, swapcontext are not implemeted for e500

[gotom at debian dot or dot jp]

------- Additional Comments From gotom at debian dot or dot jp  2005-06-01 11:23 -------
It seems your version is based on old glibc 2.3.2.  In the latest version,
getcontext is existed in (ex) 
sysdeps/unix/sysv/linux/powerpc/powerpc32/ directory and so on.
Could you check it again?

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           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|NEW                         |WAITING


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[Bug libc/986] getcontext, setcontext, swapcontext are not implemeted for e500

[dtemirbulatov at ru dot mvista dot com]

------- Additional Comments From dtemirbulatov at ru dot mvista dot com  2005-06-01 11:55 -------
yes, sorry I was wrong about 2.3.5. Illegal instruction occurs only under
glibc-2.3.2. But in 2.3.5, it still does not save whole fpu context(64-bit GPRs)
for e500.

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[Bug libc/986] getcontext, setcontext, swapcontext are not implemeted for e500

[gtolstolytkin at ru dot mvista dot com]

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           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |gtolstolytkin at ru dot
                   |                            |mvista dot com


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[Bug libc/986] getcontext, setcontext, swapcontext are not implemeted for e500

[gotom at debian dot or dot jp]

------- Additional Comments From gotom at debian dot or dot jp  2005-06-01 14:57 -------
Steven, could you look at this report?

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           What    |Removed                     |Added
----------------------------------------------------------------------------
         AssignedTo|gotom at debian dot or dot  |sjmunroe at us dot ibm dot
                   |jp                          |com
             Status|WAITING                     |ASSIGNED


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[Bug libc/986] getcontext, setcontext, swapcontext are not implemeted for e500

[sjmunroe at us dot ibm dot com]

------- Additional Comments From sjmunroe at us dot ibm dot com  2005-06-01 16:33 -------
 special purpose embeded (Book-E) processor which does not conform to the core
PowerPC architecture. It is a 32-bit (LR,CTR, XER) processor with combined
64-bit GPR/FPR set plus Accumulator.

The current glibc port targets powerpc32 and powerpc64 conform to the SysV ABI
PowerPC[32-bit] Processor Supplement and the 64-bit PowerPC ELF ABI Supplement
and fully support the standard PowerPC Architecure for 32-/64-bit
implementations/modes.

So this is not a bug. The current powerpc32/powerpc64 implementations are
correct according to thier respective ABIs.

e500 would have to be a separate target/ABI. And will require a separate port.

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[Bug libc/986] getcontext, setcontext, swapcontext are not implemeted for e500

[amodra at bigpond dot net dot au]

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           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|amodra at bigpond dot net   |
                   |dot au                      |


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[Bug libc/986] getcontext, setcontext, swapcontext are not implemeted for e500

[dtemirbulatov at ru dot mvista dot com]

------- Additional Comments From dtemirbulatov at ru dot mvista dot com  2005-06-06 19:40 -------
Created an attachment (id=508)
 --> (http://sources.redhat.com/bugzilla/attachment.cgi?id=508&action=view)
proposed patch


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           What    |Removed                     |Added
----------------------------------------------------------------------------
 Attachment #502 is|0                           |1
           obsolete|                            |


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[Bug libc/986] getcontext, setcontext, swapcontext are not implemeted for e500

[sjmunroe at us dot ibm dot com]

------- Additional Comments From sjmunroe at us dot ibm dot com  2005-06-06 21:41 -------
This is not sufficient:

1) setcontext is not the only function that needs to be different between
powerpc32 and e500 what ever. Also the versioning cruft either does not apply or
needs to be different.

2) I don't think your patch has the correct directory path for a add-on port.
Also I don't think the spe is a valid autoconf target plaform.

3) What IS you ABI and where is it documented? 

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[Bug libc/986] getcontext, setcontext, swapcontext are not implemeted for e500

[drepper at redhat dot com]

------- Additional Comments From drepper at redhat dot com  2005-09-22 20:23 -------
This is not of any interest since it's not for a regular chip.  Embedded crap
isn't supported in glibc.

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           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|ASSIGNED                    |RESOLVED
         Resolution|                            |WONTFIX


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