Out-of-tree code can still be using the old file locations. Introduce
header shims to include the headers from the new correct location and
print a warning message.
Add also a new Kconfig symbol to suppress such warning.
The shim will go away after two releases, so make sure to adapt your
application for the new locations.
Signed-off-by: Carlo Caione <ccaione@baylibre.com>
Before introducing the code for ARM64 (AArch64) we need to relocate the
current ARM code to a new AArch32 sub-directory. For now we can assume
that no code is shared between ARM and ARM64.
There are no functional changes. The code is moved to the new location
and the file paths are fixed to reflect this change.
Signed-off-by: Carlo Caione <ccaione@baylibre.com>
We should be adding a compiler barrier for IP register
when we are doing syscall generation on Cortex-M
architecture. The syscall generation itself only
does an SVC trigger; the execution returns to thread
mode and ARM does not guarantee that IP register is
preserved, when we finally get back to the point where
the syscall was invoked. This may be a problem, when
the compiler inlines the arch_syscall_invoke function,
so the IP register may be in use.
Signed-off-by: Ioannis Glaropoulos <Ioannis.Glaropoulos@nordicsemi.no>
Fix the following warning from gcc-9.2:
arm/syscall.h:52:2: error: listing the stack pointer register 'sp'
in a clobber list is deprecated [-Werror=deprecated]
52 | __asm__ volatile("svc %[svid]\n"
| ^~~~~~~
Signed-off-by: Kumar Gala <kumar.gala@linaro.org>
Promote the private z_arch_* namespace, which specifies
the interface between the core kernel and the
architecture code, to a new top-level namespace named
arch_*.
This allows our documentation generation to create
online documentation for this set of interfaces,
and this set of interfaces is worth treating in a
more formal way anyway.
Signed-off-by: Andrew Boie <andrew.p.boie@intel.com>
We need to pass system call args using a register-width
data type and not hard-code this to u32_t.
Signed-off-by: Andrew Boie <andrew.p.boie@intel.com>
We should be adding a compiler barrier for IP and SP
registers when we are doing syscall generation on
ARMv6-M architecture. The syscall generation itself
only does an SVC trigger; the execution returns to
thread mode and ARM does not guarantee that IP
register is preserved, when we finally get back to
the point where the syscall was invoked. The SP
also needs to be preserved for syscalls returning
64-bit results. In that case the r0 may hold a
pointer to the stack where the 64-bit result was
pushed, That is, the stack pointer may have been
changed due to the syscall, and C code needs to
know that.
Signed-off-by: Ioannis Glaropoulos <Ioannis.Glaropoulos@nordicsemi.no>
Refactor z_arch_is_user_context() for ARM, so it uses
the CMSIS CONTROL_nPRIV_Msk instead of hard-coded 0x1.
Fixing also some typos in include/arch/arm/syscall.h.
Signed-off-by: Ioannis Glaropoulos <Ioannis.Glaropoulos@nordicsemi.no>
Update reserved function names starting with one underscore, replacing
them as follows:
'_k_' with 'z_'
'_K_' with 'Z_'
'_handler_' with 'z_handl_'
'_Cstart' with 'z_cstart'
'_Swap' with 'z_swap'
This renaming is done on both global and those static function names
in kernel/include and include/. Other static function names in kernel/
are renamed by removing the leading underscore. Other function names
not starting with any prefix listed above are renamed starting with
a 'z_' or 'Z_' prefix.
Function names starting with two or three leading underscores are not
automatcally renamed since these names will collide with the variants
with two or three leading underscores.
Various generator scripts have also been updated as well as perf,
linker and usb files. These are
drivers/serial/uart_handlers.c
include/linker/kobject-text.ld
kernel/include/syscall_handler.h
scripts/gen_kobject_list.py
scripts/gen_syscall_header.py
Signed-off-by: Patrik Flykt <patrik.flykt@intel.com>
Any word started with underscore followed by and uppercase letter or a
second underscore is a reserved word according with C99.
Signed-off-by: Flavio Ceolin <flavio.ceolin@intel.com>
Split out the arch specific syscall code to reduce include pollution
from other arch related headers. For example on ARM its possible to get
errno.h included via SoC specific headers. Which created an interesting
compile issue because of the order of syscall & errno/errno syscall
inclusion.
Signed-off-by: Kumar Gala <kumar.gala@linaro.org>
