3949
Comment: typo fix (nice => niche)
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4103
Update bug status and rearrange the table a bit
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Deletions are marked like this. | Additions are marked like this. |
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|| '''Package''' || '''Assigned-to''' || '''Debian Bug''' || || dpkg || <MERGED> || [[DebianBug:575158|#575158]] || || eglibc || Kyle Moffett || [[DebianBug:579778|#579778]] || || gcc-4.3 || || || || gcc-4.4 || Kyle Moffett || [[DebianBug:579780|#579780]] || || lintian || Sebastian || [[DebianBug:581314|#581314]] || || openoffice || Sebastian || || || openssh || <MERGED> || [[DebianBug:579843|#579843]] || || openssl || Kyle Moffett || [[DebianBug:579805|#579805]] || || strace || Sebastian || [[DebianBug:579842|#579842]] || || util-linux || Sebastian || [[DebianBug:579844|#579844]] || || xulrunner || Sebastian || || |
|| '''Package''' || '''Assigned-to''' || '''Status''' || '''Debian Bug''' || || dpkg || Kyle Moffett || Merged || [[DebianBug:575158|#575158]] || || eglibc || Kyle Moffett || Submitted || [[DebianBug:579778|#579778]] || || gcc-4.3 || || TODO || || || gcc-4.4 || Kyle Moffett || Merged/Buggy || [[DebianBug:579780|#579780]] || || lintian || Sebastian || Submitted || [[DebianBug:581314|#581314]] || || openoffice || Sebastian || TODO || || || openssh || Sebastian || Merged || [[DebianBug:579843|#579843]] || || openssl || Kyle Moffett || Submitted || [[DebianBug:579805|#579805]] || || strace || Sebastian || Submitted || [[DebianBug:579842|#579842]] || || util-linux || Sebastian || Submitted || [[DebianBug:579844|#579844]] || || xulrunner || Sebastian || TODO || || |
Line 25: | Line 25: |
|| '''Package''' || '''Version''' || '''VCS Commit''' || || dpkg || UNRELEASED || [[http://git.debian.org/?p=dpkg/dpkg.git;a=commitdiff;h=feb5792|feb5792 (GIT)]] || || openssh || UNRELEASED || [[http://bzr.debian.org/loggerhead/pkg-ssh/openssh/trunk/revision/3431?|r3431 (BZR)]] || |
|| '''Package''' || '''Version''' || '''VCS Commit''' || '''Comment''' || || dpkg || UNRELEASED || [[http://git.debian.org/?p=dpkg/dpkg.git;a=commitdiff;h=feb5792|feb5792 (GIT)]] || || || gcc-4.4 || 4.4.4-2 || FIXME: Where is this? || Still buggy || || openssh || UNRELEASED || [[http://bzr.debian.org/loggerhead/pkg-ssh/openssh/trunk/revision/3431?|r3431 (BZR)]] || || |
Contents
Current status
Current 'powerpcspe' bug list
http://bugs.debian.org/cgi-bin/pkgreport.cgi?tag=powerpcspe;users=debian-powerpcspe@breakpoint.cc
Packages which need fixes to build natively (List is incomplete)
Package |
Assigned-to |
Status |
Debian Bug |
dpkg |
Kyle Moffett |
Merged |
|
eglibc |
Kyle Moffett |
Submitted |
|
gcc-4.3 |
|
TODO |
|
gcc-4.4 |
Kyle Moffett |
Merged/Buggy |
|
lintian |
Sebastian |
Submitted |
|
openoffice |
Sebastian |
TODO |
|
openssh |
Sebastian |
Merged |
|
openssl |
Kyle Moffett |
Submitted |
|
strace |
Sebastian |
Submitted |
|
util-linux |
Sebastian |
Submitted |
|
xulrunner |
Sebastian |
TODO |
|
Packages for which fixes have been merged
Package |
Version |
VCS Commit |
Comment |
dpkg |
UNRELEASED |
|
|
gcc-4.4 |
4.4.4-2 |
FIXME: Where is this? |
Still buggy |
openssh |
UNRELEASED |
|
Architecture summary
The 'powerpcspe' architecture is a binary-incompatible variant of the PowerPC/POWER designed and supported by FreeScale and IBM. It is also known under the trade names "e500"/"MPC8500" and "e200"/"MPC5xx".
Additional information can be found at:
Instruction set
In particular, the 'powerpcspe' architecture lacks the classic FPU with dedicated FPRs found on most other PowerPC systems. It is replaced with a set of "SPE" instructions which perform floating-point operations on the integer registers.
In an unfortunate choice of architecture design, the instructions used for the "SPE" operations overlap with those for the Altivec unit on most other modern PowerPC cores.
Chipset details
The "e500v2"-series chips have 64-bit GPRs, where the high 32-bits are accessible only via the special "SPE" instructions, allowing them to make efficient use of the "double" datatype.
The relatively rare "e500v1"-series chips have only 32-bit GPRs, and require software traps and emulation to support native "double".
The "e200z3" and "e200z6" chips have no support for floating point at all, but with software traps and emulation are binary-compatible with the "e500"-series chips.
GCC/EGLIBC considerations
The Debian port to this architecture specifically chooses to optimize for the higher-end chips (e500v2), as most of the others are targeted at automotive applications or no longer in production.
GCC by default builds correctly with full support for the e500v2 as long as the following options are passed to "configure":
--with-cpu=8548
--enable-e500_double
--with-long-double-128
Please note that the --with-long-double-128 is desired to match the behavior of long double on other PowerPC-based platforms. (Otherwise long double is exactly the same as double).
Final notes
At this time the 'powerpcspe' architecture port is still very much an unofficial port. While we hope that will change in the future, it is entirely possible that the embedded niche of the processor will make such an official Debian port problematic.