[Bug 922946] [NEW] Ubuntu 11.10 omap/armv7 OpenSSL built without ARMv4 optimization

[James Yonan]

Public bug reported:

I'm running the "OMAP" build of Ubuntu 11.10 on armv7.

root at omap:~/ovpn3/test/cli# uname -a
Linux omap 3.1.0-psp3 #1 SMP Fri Dec 23 10:44:55 UTC 2011 armv7l armv7l armv7l GNU/Linux

I noticed that the OpenSSL build with this distro wasn't built with
ARMv4 optimizations.  As a result, certain crypto operations such as AES
use the slow C version instead of the fast armv4 asm version.

You can confirm this by running an app that uses OpenSSL in gdb and
running "disas AES_encrypt".

The resulting disassembly should match the ARMv4 ASM code in
crypto/aes/asm/aes-armv4.pl in the OpenSSL distro.

When building OpenSSL, make sure to specify armv4 to get the asm
optimizations:

  ./Configure linux-armv4
  make

James

** Affects: openssl (Ubuntu)
     Importance: Undecided
         Status: New


** Tags: armel

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https://bugs.launchpad.net/bugs/922946

Title:
  Ubuntu 11.10 omap/armv7 OpenSSL built without ARMv4 optimization

Status in “openssl” package in Ubuntu:
  New

Bug description:
  I'm running the "OMAP" build of Ubuntu 11.10 on armv7.

  root at omap:~/ovpn3/test/cli# uname -a
  Linux omap 3.1.0-psp3 #1 SMP Fri Dec 23 10:44:55 UTC 2011 armv7l armv7l armv7l GNU/Linux

  I noticed that the OpenSSL build with this distro wasn't built with
  ARMv4 optimizations.  As a result, certain crypto operations such as
  AES use the slow C version instead of the fast armv4 asm version.

  You can confirm this by running an app that uses OpenSSL in gdb and
  running "disas AES_encrypt".

  The resulting disassembly should match the ARMv4 ASM code in
  crypto/aes/asm/aes-armv4.pl in the OpenSSL distro.

  When building OpenSSL, make sure to specify armv4 to get the asm
  optimizations:

    ./Configure linux-armv4
    make

  James

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