778345 - Use the ARM assembly code in lib/freebl/mpi/mpi_arm.c for iOS

Status: NEW

(NSS :: Libraries, defect, P2)

Description

[Wan-Teh Chang]

Ted: could you take this bug?  I don't know how to build NSS for iOS.

In bug 572085, Makoto Kato added ARM assembly code to MPI, but it is
only used for Linux/ARM:
http://bonsai.mozilla.org/cvsblame.cgi?file=mozilla/security/nss/lib/freebl/Makefile&rev=1.121&mark=176,197-202#176

I assume Android is already covered by Linux/ARM.  Makoto or Ted,
could you confirm this?

We should also use that assembly code for iOS.

To use the assembly code in mpi_arm.c, NSS needs to be compiled with
-DMP_ASSEMBLY_MULTIPLY -DMP_ASSEMBLY_SQUARE

NOTE: we can look into writing ARM assembly code for a division routine
s_mpv_div_2dx1d and compiling NSS with -DMP_ASSEMBLY_DIV_2DX1D.

We can also try compiling NSS with -DMP_USE_UINT_DIGIT -DSHA_NO_LONG_LONG
for iOS.

Comment 1

[Kai Engert [:KaiE:]]

needs a new target milestone

Comment 2

[BugBot [:suhaib / :marco/ :calixte]]

The bug assignee didn't login in Bugzilla in the last months and this bug has priority 'P2'.
:beurdouche, could you have a look please?
For more information, please visit auto_nag documentation.

Comment 3

[Marco Castelluccio [:marco]]

We have modified the bot to only consider P1 as high priority, so I'm cancelling the needinfo here.