ldelf: Provide access to TS load address

Propagate ELF load address from ldelf to user mode context as a
preparation for load address relative memory regions.

Signed-off-by: Imre Kis <imre.kis@arm.

ldelf: Provide access to TS load address

Propagate ELF load address from ldelf to user mode context as a
preparation for load address relative memory regions.

Signed-off-by: Imre Kis <imre.kis@arm.com>
Acked-by: Jens Wiklander <jens.wiklander@linaro.org>

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core, ldelf: add support for RISC-V

RISC-V support of argument for ldelf dump state.

Signed-off-by: Marouene Boubakri <marouene.boubakri@nxp.com>
Reviewed-by: Jerome Forissier <jerome.forissier@lin

core, ldelf: add support for RISC-V

RISC-V support of argument for ldelf dump state.

Signed-off-by: Marouene Boubakri <marouene.boubakri@nxp.com>
Reviewed-by: Jerome Forissier <jerome.forissier@linaro.org>

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core, ldelf: replace is_arm32 with is_32bit

To refer to 32-bit mode, this commit replace is_arm32 with is_32bit
in the following files:
- core/kernel/ldelf_loader.c
- ldelf/include/ldelf.h
- ldelf/m

core, ldelf: replace is_arm32 with is_32bit

To refer to 32-bit mode, this commit replace is_arm32 with is_32bit
in the following files:
- core/kernel/ldelf_loader.c
- ldelf/include/ldelf.h
- ldelf/main.c

Signed-off-by: Marouene Boubakri <marouene.boubakri@nxp.com>
Reviewed-by: Jerome Forissier <jerome.forissier@linaro.org>

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ldelf: Add support for mapping ELF executable sections as guarded

Introduce LDELF_MAP_FLAG_BTI to indicate if ELF supports BTI. A
BTI instruction is used to guard against the execution of instructio

ldelf: Add support for mapping ELF executable sections as guarded

Introduce LDELF_MAP_FLAG_BTI to indicate if ELF supports BTI. A
BTI instruction is used to guard against the execution of instructions
that are not the intended target of a branch. The executable pages need
to be marked as guarded to ensure that BTI doesn't execute as NOP.

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

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core: ldelf: implement separate syscalls for ldelf

Implements a separate syscall handler for ldelf to decouple it from user
TAs and enable using it for all TSs. The calling convention is the same
as

core: ldelf: implement separate syscalls for ldelf

Implements a separate syscall handler for ldelf to decouple it from user
TAs and enable using it for all TSs. The calling convention is the same
as for utee_* syscalls. To distinguish between the different SVCs, the
syscall handler pointer is updated before entering ldelf and restored
after returning. The step of opening a system PTA session and invoking
the commands there is eliminated, the necessary functionality is
implemented in the ldelf syscall functions.

Acked-by: Etienne Carriere <etienne.carriere@linaro.org>
Reviewed-by: Jens Wiklander <jens.wiklander@linaro.org>
Signed-off-by: Balint Dobszay <balint.dobszay@arm.com>

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core, ldelf: add support for runtime loading of shared libraries

This commit prepares the introduction of libdl, a dynamic linking
library which will allow TAs to load shared libraries at run time,

core, ldelf: add support for runtime loading of shared libraries

This commit prepares the introduction of libdl, a dynamic linking
library which will allow TAs to load shared libraries at run time,
and resolve symbols on demand. It adds the following function to the
system PTA, inspired from the POSIX dlopen() and dlsym():

- system_dlopen(): takes a UUID and flags. Performs an upcall into
ldelf which then uses the usual system PTA functions to load an map the
requested library into the address space of the calling TA.
- system_dlsym(): takes a UUID and a symbol name. The symbol is
looked up in the library specified by UUID by calling into ldelf. If
UUID is all zeros, all the mapped binaries are searched.

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

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ldelf: fix comment

ldelf_dump() does not exist, the comment about struct dump_entry_arg
should refer to ldelf_arg::dump_entry() instead.

Signed-off-by: Jerome Forissier <jerome.forissier@linaro.org

ldelf: fix comment

ldelf_dump() does not exist, the comment about struct dump_entry_arg
should refer to ldelf_arg::dump_entry() instead.

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

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ldelf: ftrace: pass ftrace buffer address to kernel

Enable support to pass ftrace buffer address to kernel during loading
of particular TA. It is required to support function execution time
feature

ldelf: ftrace: pass ftrace buffer address to kernel

Enable support to pass ftrace buffer address to kernel during loading
of particular TA. It is required to support function execution time
feature since kernel needs to update timestamps in ftrace buffer during
TA suspends for proper execution time.

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

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ldelf: support TA ftrace

Adds support in ldelf to dump ftrace data.

Reviewed-by: Sumit Garg <sumit.garg@linaro.org>
Acked-by: Jerome Forissier <jerome.forissier@linaro.org>
Signed-off-by: Jens Wikl

ldelf: support TA ftrace

Adds support in ldelf to dump ftrace data.

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

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ldelf: support dumping memory map

Adds support in ldelf to dump memory maps.

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

Add user mode ELF loader

Adds ldelf which loads user mode TAs while in user mode. The TA ELF file is
loaded and relocated by ldelf before the TA can be executed.

Reviewed-by: Jerome Forissier <jero

Add user mode ELF loader

Adds ldelf which loads user mode TAs while in user mode. The TA ELF file is
loaded and relocated by ldelf before the TA can be executed.

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

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