Use fallthrough pseudo-keyword in switch/case statements

Use fallthrough; in switch/case statements. Imported libraries
(libtomcrypt, libmbedtls) are not modified to minimize differences with
upstre

Use fallthrough pseudo-keyword in switch/case statements

Use fallthrough; in switch/case statements. Imported libraries
(libtomcrypt, libmbedtls) are not modified to minimize differences with
upstream.

Signed-off-by: Jerome Forissier <jerome@forissier.org>
Reviewed-by: Jens Wiklander <jens.wiklander@linaro.org>

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libutils: add sprintf()

Preparing for C++ support in TAs.

Implement sprintf() in libutils.

Signed-off-by: Jerome Forissier <jerome@forissier.org>
Acked-by: Etienne Carriere <etienne.carriere@linar

libutils: add sprintf()

Preparing for C++ support in TAs.

Implement sprintf() in libutils.

Signed-off-by: Jerome Forissier <jerome@forissier.org>
Acked-by: Etienne Carriere <etienne.carriere@linaro.org>
Reviewed-by: Jens Wiklander <jens.wiklander@linaro.org>

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Add SPDX license identifiers

Adds one SPDX-License-Identifier line [1] to each source files that
contains license text.

Generated by [2]:
spdxify.py --add-spdx optee_os/

The scancode tool [3] wa

Add SPDX license identifiers

Adds one SPDX-License-Identifier line [1] to each source files that
contains license text.

Generated by [2]:
spdxify.py --add-spdx optee_os/

The scancode tool [3] was used to double check the license matching
code in the Python script. All the licenses detected by scancode are
either detected by spdxify.py, or have no SPDX identifier, or are false
matches.

Link: [1] https://spdx.org/licenses/
Link: [2] https://github.com/jforissier/misc/blob/f7b56c8/spdxify.py
Link: [3] https://github.com/nexB/scancode-toolkit
Signed-off-by: Jerome Forissier <jerome.forissier@linaro.org>
Acked-by: Joakim Bech <joakim.bech@linaro.org>

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Format UUID strings correctly

Prior to this patch although GlobalPlatform specifies that TAs and such
are identified with UUIDs, we don't format them quite right when turning
them into strings. Per

Format UUID strings correctly

Prior to this patch although GlobalPlatform specifies that TAs and such
are identified with UUIDs, we don't format them quite right when turning
them into strings. Per https://www.ietf.org/rfc/rfc4122.txt, there
should be another hyphen after the first two bytes of clockSeqAndNode.

Unfortunately, fixing this breaks compatibility between how TAs are
built, and when the OS loads them.

With this patch UUID string are formated with the additional hyphen as
for instance: f81d4fae-7dec-11d0-a765-00a0c91e6bf6

Reviewed-by: Jerome Forissier <jerome.forissier@linaro.org>
Fixes: https://github.com/OP-TEE/optee_os/issues/857
Tested-by: Jens Wiklander <jens.wiklander@linaro.org> (QEMU)
Signed-off-by: Jens Wiklander <jens.wiklander@linaro.org>

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libutils: add %pUl format for UUIDs

The debug traces in tee_ta_manager.c do not show the last 8 bytes of
the TA UUIDs, which makes the output confusing sometimes.
This commit adds support for a new

libutils: add %pUl format for UUIDs

The debug traces in tee_ta_manager.c do not show the last 8 bytes of
the TA UUIDs, which makes the output confusing sometimes.
This commit adds support for a new printf format for little-endian
encoded UUIDs: %pUl, and uses it in tee_ta_manager.c. For example:

TEE_UUID uuid;
DMSG("UUID: %pUl", (void *)&uuid);

...will print something like:

[...] UUID: cb3e5ba0-adf1-11e0-998b0002a5d5c51b

The new format is available when using the trace macros or the new
functions: snprintk(), vsnprintk() declared in <printk.h>.
But, snprintf() and vsnprintf() are not modified in order not to break
standard compliance.

This format is taken from the Linux kernel [1].

[1] https://www.kernel.org/doc/Documentation/printk-formats.txt

Signed-off-by: Jerome Forissier <jerome.forissier@linaro.org>
Reviewed-by: Jens Wiklander <jens.wiklander@linaro.org>
Reviewed-by: Pascal Brand <pascal.brand@linaro.org>

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