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| author | Antonio Nino Diaz <antonio.ninodiaz@arm.com> | 2018-08-17 10:45:47 +0100 |
|---|---|---|
| committer | Antonio Nino Diaz <antonio.ninodiaz@arm.com> | 2018-08-22 10:26:05 +0100 |
| commit | 27989a8e34a44ff8e6a2e5b011123a09fd8a82c7 (patch) | |
| tree | ac823ae747872ad9e3868f94cc0e6f6602dfeb42 /docs | |
| parent | 2c5aca6eaab998271ab17792486cf67dd2e67711 (diff) | |
| download | platform_external_arm-trusted-firmware-27989a8e34a44ff8e6a2e5b011123a09fd8a82c7.tar.gz platform_external_arm-trusted-firmware-27989a8e34a44ff8e6a2e5b011123a09fd8a82c7.tar.bz2 platform_external_arm-trusted-firmware-27989a8e34a44ff8e6a2e5b011123a09fd8a82c7.zip | |
libc: Introduce files from SCC
Taken from http://git.simple-cc.org/scc/ from the following commit:
67508ad14af314cea2229783d3c084f28c41daf0
Permission has been granted from the author to use them under the
license BSD-3-Clause instead of ISC.
Change-Id: I65c0ce3ab60c49d34a57533af12a74bd7bde88e5
Signed-off-by: Antonio Nino Diaz <antonio.ninodiaz@arm.com>
Diffstat (limited to 'docs')
| -rw-r--r-- | docs/porting-guide.rst | 32 |
1 files changed, 7 insertions, 25 deletions
diff --git a/docs/porting-guide.rst b/docs/porting-guide.rst index 65f39b0a0..de7b5dba3 100644 --- a/docs/porting-guide.rst +++ b/docs/porting-guide.rst @@ -2982,32 +2982,13 @@ contains those C library definitions required by the local implementation. If more functionality is required, the needed library functions will need to be added to the local implementation. -Versions of `FreeBSD`_ headers can be found in ``include/lib/stdlib``. Some of -these headers have been cut down in order to simplify the implementation. In -order to minimize changes to the header files, the `FreeBSD`_ layout has been -maintained. The generic C library definitions can be found in -``include/lib/stdlib`` with more system and machine specific declarations in -``include/lib/stdlib/sys`` and ``include/lib/stdlib/machine``. +Some C headers have been obtained from `FreeBSD`_ and `SCC`_, while others have +been written specifically for TF-A. Fome implementation files have been obtained +from `FreeBSD`_, others have been written specifically for TF-A as well. The +files can be found in ``include/lib/libc`` and ``lib/libc``. -The local C library implementations can be found in ``lib/stdlib``. In order to -extend the C library these files may need to be modified. It is recommended to -use a release version of `FreeBSD`_ as a starting point. - -The C library header files in the `FreeBSD`_ source tree are located in the -``include`` and ``sys/sys`` directories. `FreeBSD`_ machine specific definitions -can be found in the ``sys/<machine-type>`` directories. These files define things -like 'the size of a pointer' and 'the range of an integer'. Since an AArch64 -port for `FreeBSD`_ does not yet exist, the machine specific definitions are -based on existing machine types with similar properties (for example SPARC64). - -Where possible, C library function implementations were taken from `FreeBSD`_ -as found in the ``lib/libc`` directory. - -A copy of the `FreeBSD`_ sources can be downloaded with ``git``. - -:: - - git clone git://github.com/freebsd/freebsd.git -b origin/release/9.2.0 +SCC can be found in `http://www.simple-cc.org/`_. A copy of the `FreeBSD`_ +sources can be obtained from `http://github.com/freebsd/freebsd`_. Storage abstraction layer ------------------------- @@ -3082,3 +3063,4 @@ amount of open resources per driver. .. _Arm Generic Interrupt Controller version 2.0 (GICv2): http://infocenter.arm.com/help/topic/com.arm.doc.ihi0048b/index.html .. _3.0 (GICv3): http://infocenter.arm.com/help/topic/com.arm.doc.ihi0069b/index.html .. _FreeBSD: http://www.freebsd.org +.. _SCC: http://www.simple-cc.org/ |