tree-wide: use ROUNDUP_DIV() where applicable

Use ROUNDUP_DIV() instead of ROUNDUP(..., size) / size where applicable.

Signed-off-by: Etienne Carriere <etienne.carriere@foss.st.com>
Reviewed-by: Je

tree-wide: use ROUNDUP_DIV() where applicable

Use ROUNDUP_DIV() instead of ROUNDUP(..., size) / size where applicable.

Signed-off-by: Etienne Carriere <etienne.carriere@foss.st.com>
Reviewed-by: Jens Wiklander <jens.wiklander@linaro.org>

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core: use BB_MEMDUP_USER() where needed

Uses BB_MEMDUP_USER() instead of bb_memdup_user() where the destination
buffer isn't a void * in order to avoid using a extra void * variable to
handle the ou

core: use BB_MEMDUP_USER() where needed

Uses BB_MEMDUP_USER() instead of bb_memdup_user() where the destination
buffer isn't a void * in order to avoid using a extra void * variable to
handle the output pointer from bb_memdup_user().

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

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core: fix reading result in ldelf_dlopen()

The commit 52e7b1a67f8f ("core: use user-access functions in ldelf
interaction") start to use a bounce buffer to initialize the argument
for LDELF_DL_ENTRY

core: fix reading result in ldelf_dlopen()

The commit 52e7b1a67f8f ("core: use user-access functions in ldelf
interaction") start to use a bounce buffer to initialize the argument
for LDELF_DL_ENTRY_DLSYM. However, it also reads the result of
LDELF_DL_ENTRY_DLSYM from the bounce buffer. This is an error since the
result of LDELF_DL_ENTRY_DLSYM still remains on the stack used by ldelf.
So fix this by reading the result from the ldelf stack.

Fixes: 52e7b1a67f8f ("core: use user-access functions in ldelf interaction")
Signed-off-by: Jens Wiklander <jens.wiklander@linaro.org>
Reviewed-by: Jerome Forissier <jerome.forissier@linaro.org>

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core: fix ldelf invalid access to user stack with CFG_PAN=y

When CFG_PAN is enabled, OP-TEE kernel can not directly access the user
memory, otherwise an exception occurs. To fix it, we apply user-ac

core: fix ldelf invalid access to user stack with CFG_PAN=y

When CFG_PAN is enabled, OP-TEE kernel can not directly access the user
memory, otherwise an exception occurs. To fix it, we apply user-access
functions when ldelf gets the parameters from the user stack "arg".

Fixes: 52e7b1a67f8f ("core: use user-access functions in ldelf interaction")
Signed-off-by: Alvin Chang <alvinga@andestech.com>
Reviewed-by: Jens Wiklander <jens.wiklander@linaro.org>

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core: use user-access functions in ldelf interaction

When interacting with LDELF, replace implicit user space accesses from
privileged mode using proper user-access functions.

Co-developed-by: Seon

core: use user-access functions in ldelf interaction

When interacting with LDELF, replace implicit user space accesses from
privileged mode using proper user-access functions.

Co-developed-by: Seonghyun Park <seonghp@amazon.com>
Signed-off-by: Seonghyun Park <seonghp@amazon.com>
Signed-off-by: Jens Wiklander <jens.wiklander@linaro.org>
Reviewed-by: Etienne Carriere <etienne.carriere@foss.st.com>

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core: add bounce buffer to user mode context

Adds a bounce buffer for user space buffer to be used during syscall
processing to avoid unchecked privileged access into user space memory.

bb_alloc(),

core: add bounce buffer to user mode context

Adds a bounce buffer for user space buffer to be used during syscall
processing to avoid unchecked privileged access into user space memory.

bb_alloc(), bb_free(), and bb_reset() are added to manage memory
allocation from the bounce buffer.

Signed-off-by: Jens Wiklander <jens.wiklander@linaro.org>
Reviewed-by: Etienne Carriere <etienne.carriere@foss.st.com>

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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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core: kernel: move ldelf_loader.c to core/kernel

Make other architecture implementations benefit from ldelf_loader.c,
therefore move it from core/arch/arm/kernel to core/kernel.
The header file is a

core: kernel: move ldelf_loader.c to core/kernel

Make other architecture implementations benefit from ldelf_loader.c,
therefore move it from core/arch/arm/kernel to core/kernel.
The header file is already located outside the arch folder.

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

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