libutils: add division routines from LLVM compiler-rt

Add division routines needed to provide __udivti3() needed for long long
divisions in mbedtls.

Selected files are imported from the compiler-rt

libutils: add division routines from LLVM compiler-rt

Add division routines needed to provide __udivti3() needed for long long
divisions in mbedtls.

Selected files are imported from the compiler-rt directory in LLVM
version 20.1.3, tag llvmorg-20.1, to lib/libutils/compiler-rt with no
local changes except for the added sub.mk files.

Link: https://github.com/OP-TEE/optee_os/pull/7359
Link: https://github.com/OP-TEE/optee_os/issues/7374
Signed-off-by: Jens Wiklander <jens.wiklander@linaro.org>
Reviewed-by: Jerome Forissier <jerome.forissier@linaro.org>

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lib.mk: centralize profiling flag (-pg)

Code cleanup, no functional change. This commit avoids the duplication of
the -pg flag in the library makefiles.

Signed-off-by: Jerome Forissier <jerome.fori

lib.mk: centralize profiling flag (-pg)

Code cleanup, no functional change. This commit avoids the duplication of
the -pg flag in the library makefiles.

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

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Add support for user TA profiling with gprof (-pg)

Adds the infrastructure to collect profiling information from Trusted
Applications running in user mode and instrumented with -pg.
Enable with: CFG

Add support for user TA profiling with gprof (-pg)

Adds the infrastructure to collect profiling information from Trusted
Applications running in user mode and instrumented with -pg.
Enable with: CFG_TA_GPROF_SUPPORT=y.

Profiling support in itself adds no significant performance overhead.
Instrumented applications however may run 1.3x - 2x slower, and have a
larger .bss section (+1.36 times .text size for 32-bit TAs, +1.77 times
.text size for 64-bit ones).

Signed-off-by: Jerome Forissier <jerome.forissier@linaro.org>
Tested-by: Jerome Forissier <jerome.forissier@linaro.org> (D02 64-bit)
Tested-by: Jerome Forissier <jerome.forissier@linaro.org> (QEMU 32-bit)
Reviewed-by: Jens Wiklander <jens.wiklander@linaro.org>

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Add options to build user libraries with profiling enabled (-pg)

Set CFG_TA_GPROF=y to build libutee and the user-mode versions of
libutils and libmpa with the -pg flag (gprof profiling).
This featu

Add options to build user libraries with profiling enabled (-pg)

Set CFG_TA_GPROF=y to build libutee and the user-mode versions of
libutils and libmpa with the -pg flag (gprof profiling).
This feature depends on TA profiling support in OP-TEE core which will
be introduced in a later commit.

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

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Make compilation of lib/libutils/isoc configurable again

Commit c3e0bd74e4cf ("Delete libutil_with_isoc") wrongly assumed that
the code in lib/libutils/isoc is mandatory for any OP-TEE build. This i

Make compilation of lib/libutils/isoc configurable again

Commit c3e0bd74e4cf ("Delete libutil_with_isoc") wrongly assumed that
the code in lib/libutils/isoc is mandatory for any OP-TEE build. This is
not true for some non-upstream platforms which can find the functions in
external libraries.

Therefore, this commits makes the thing configurable again through
CFG_LIBUTILS_WITH_ISOC (default: y).

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

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Delete libutil_with_isoc

OP-TEE won't build unless $(libutil_with_isoc) is 'y', so this variable
is not needed.

Signed-off-by: Jerome Forissier <jerome.forissier@linaro.org>
Reviewed-by: Joakim Bec

Delete libutil_with_isoc

OP-TEE won't build unless $(libutil_with_isoc) is 'y', so this variable
is not needed.

Signed-off-by: Jerome Forissier <jerome.forissier@linaro.org>
Reviewed-by: Joakim Bech <joakim.bech@linaro.org>

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Open-source the TEE Core

Signed-off-by: Pascal Brand <pascal.brand@st.com>