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Clarified information in libbsd.txt.

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Kevin Polulak 2012-07-11 13:11:04 -05:00 committed by Jennifer Averett
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libbsd.txt
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@ -143,18 +143,19 @@ pre-merged. The Makefile in this kit is automatically generated.
Any changes to sources in the freebsd or contrib directories will need to Any changes to sources in the freebsd or contrib directories will need to
be merged upstream into our master FreeBSD svn checkout. be merged upstream into our master FreeBSD svn checkout.
The FreeBSD sources managed in RTEMS libbsd git repository (e.g. contrib The FreeBSD sources managed in the rtems-libbsd git repository (e.g. contrib
and freebsd directories) contain the "managed" version of the and freebsd directories) contain the "managed" version of the
FreeBSD source. The FreeBSD SVN source is the "master" version. The FreeBSD source. The FreeBSD SVN source is the "master" version. The
freebsd-to-rtems.py script is used to transfer files between the two freebsd-to-rtems.py script is used to transfer files between the two
trees. In general terms, if you have modified FreeBSD in the RTEMS libbsd trees. In general terms, if you have modified FreeBSD (i.e. anything in the
tree, you want to run the script in "revert" or "reverse" mode to move freebsd directory) in the rtems-libbsd tree, you will need to run the script
the source back so you can run an "svn diff" against the upstream FreeBSD in "revert" or "reverse" mode using the -R switch. This will copy the source
source. If you want to transfer source from the FreeBSD SVN checkout to back to your local copy of the FreeBSD source so you can run "svn diff" against
the RTEMS libbsd tree, then you want to run the script in "forward" or the upstream FreeBSD source. If you want to transfer source files from the
default mode. FreeBSD SVN checkout to the rtems-libbsd tree, then you must run the script in
"forward" mode (the default).
=== Building RTEMS libbsd source === Building rtems-libbsd source
You need to configure RTEMS for the desired BSP and install it. The You need to configure RTEMS for the desired BSP and install it. The
following is the script used to build the powerpc/psim BSP for our following is the script used to build the powerpc/psim BSP for our
@ -187,9 +188,9 @@ RTEMS_MAKEFILE_PATH = ${HOME}/newbsd/bsp-install/powerpc-rtems4.11/psim/
INSTALL_BASE = ${HOME}/newbsd/install INSTALL_BASE = ${HOME}/newbsd/install
---- ----
The above installs the RTEMS libbsd kit into a separate place from The above installs the rtems-libbsd kit into a separate place from
RTEMS and the BSP. The RTEMS libbsd tests are built against an installed RTEMS and the BSP. The rtems-libbsd tests are built against an installed
image of the RTEMS libbsd. By keeping it in a separate installation point image of the rtems-libbsd. By keeping it in a separate installation point
from RTEMS itself, this makes it easier to remove a libbsd installation from RTEMS itself, this makes it easier to remove a libbsd installation
and have a clean test point. and have a clean test point.
@ -216,10 +217,10 @@ are important to understand:
* testsuite/ - RTEMS specific tests * testsuite/ - RTEMS specific tests
* libbsd.txt - Documentation in Asciidoc * libbsd.txt - Documentation in Asciidoc
== Moving Code Between FreeBSD SVN and RTEMS libbsd == Moving Code Between FreeBSD SVN and rtems-libbsd
The script freebsd-to-rtems.py is used to copy code from FreeBSD to the The script freebsd-to-rtems.py is used to copy code from FreeBSD to the
RTEMS libbsd tree and to reverse this process. This script attempts to rtems-libbsd tree and to reverse this process. This script attempts to
automate this process as much as possible and performs some transformations automate this process as much as possible and performs some transformations
on the FreeBSD code. Its command line arguments are shown below: on the FreeBSD code. Its command line arguments are shown below:
@ -238,7 +239,7 @@ freebsd-to-rtems.py [args]
---- ----
In its default mode of operation, freebsd-to-rtems.py is used to copy code In its default mode of operation, freebsd-to-rtems.py is used to copy code
from FreeBSD to the RTEMS libbsd tree and perform transformations. In forward from FreeBSD to the rtems-libbsd tree and perform transformations. In forward
mode, the script may be requested to just generate the Makefile. mode, the script may be requested to just generate the Makefile.
In "reverse mode", this script undoes those transformations and copies In "reverse mode", this script undoes those transformations and copies
@ -273,9 +274,9 @@ Generating into /home/joel/newbsd/git/libbsd-8.2
The script may also be used to generate a diff in either forward or reverse The script may also be used to generate a diff in either forward or reverse
direction. direction.
== Initialization of RTEMS libbsd == Initialization of rtems-libbsd
The initialization of the RTEMS libbsd is based on the FreeBSD SYSINIT(9) The initialization of the rtems-libbsd is based on the FreeBSD SYSINIT(9)
infrastructure. The key to initializing a system is to ensure that the desired infrastructure. The key to initializing a system is to ensure that the desired
device drivers are explicitly pulled into the linked application. This plus device drivers are explicitly pulled into the linked application. This plus
linking against the libbsd library will pull in the necessary FreeBSD linking against the libbsd library will pull in the necessary FreeBSD