With the change in SDK 0.11.1 to newlib to remove
-DMISSING_SYSCALL_NAMES we now need to implement a version of
_gettimeofday. Previously with pre SDK 0.11.1 we had a recursive mess
of _gettimeofday_r -> gettimeofday -> _gettimeofday_r. (which are all
implemented in newlib and thus we didn't get a link error).
With SDK 0.11.1 we have: _gettimeofday_r -> _gettimeofday. And we
should provide a version of _gettimeofday.
Fixes#22484
Signed-off-by: Kumar Gala <kumar.gala@linaro.org>
On xtensa we always need to implement the reentrant fs syscall
functions. So remove the #ifndef CONFIG_POSIX_API protection around
them and add needed externs.
Signed-off-by: Kumar Gala <kumar.gala@linaro.org>
The xcc specific reentrant syscall implementations are actually useful
for xtensa in general. So move that code from being specific to
intel_s1000 / xcc into generic newlib/libc-hooks.c. This is in prep
for the Zephyr SDK dropping -DMISSING_SYSCALL_NAMES which will make
its version of newlib on xtensa match behavior with xcc.
Signed-off-by: Kumar Gala <kumar.gala@linaro.org>
This commit refactors kernel and arch headers to establish a boundary
between private and public interface headers.
The refactoring strategy used in this commit is detailed in the issue
This commit introduces the following major changes:
1. Establish a clear boundary between private and public headers by
removing "kernel/include" and "arch/*/include" from the global
include paths. Ideally, only kernel/ and arch/*/ source files should
reference the headers in these directories. If these headers must be
used by a component, these include paths shall be manually added to
the CMakeLists.txt file of the component. This is intended to
discourage applications from including private kernel and arch
headers either knowingly and unknowingly.
- kernel/include/ (PRIVATE)
This directory contains the private headers that provide private
kernel definitions which should not be visible outside the kernel
and arch source code. All public kernel definitions must be added
to an appropriate header located under include/.
- arch/*/include/ (PRIVATE)
This directory contains the private headers that provide private
architecture-specific definitions which should not be visible
outside the arch and kernel source code. All public architecture-
specific definitions must be added to an appropriate header located
under include/arch/*/.
- include/ AND include/sys/ (PUBLIC)
This directory contains the public headers that provide public
kernel definitions which can be referenced by both kernel and
application code.
- include/arch/*/ (PUBLIC)
This directory contains the public headers that provide public
architecture-specific definitions which can be referenced by both
kernel and application code.
2. Split arch_interface.h into "kernel-to-arch interface" and "public
arch interface" divisions.
- kernel/include/kernel_arch_interface.h
* provides private "kernel-to-arch interface" definition.
* includes arch/*/include/kernel_arch_func.h to ensure that the
interface function implementations are always available.
* includes sys/arch_interface.h so that public arch interface
definitions are automatically included when including this file.
- arch/*/include/kernel_arch_func.h
* provides architecture-specific "kernel-to-arch interface"
implementation.
* only the functions that will be used in kernel and arch source
files are defined here.
- include/sys/arch_interface.h
* provides "public arch interface" definition.
* includes include/arch/arch_inlines.h to ensure that the
architecture-specific public inline interface function
implementations are always available.
- include/arch/arch_inlines.h
* includes architecture-specific arch_inlines.h in
include/arch/*/arch_inline.h.
- include/arch/*/arch_inline.h
* provides architecture-specific "public arch interface" inline
function implementation.
* supersedes include/sys/arch_inline.h.
3. Refactor kernel and the existing architecture implementations.
- Remove circular dependency of kernel and arch headers. The
following general rules should be observed:
* Never include any private headers from public headers
* Never include kernel_internal.h in kernel_arch_data.h
* Always include kernel_arch_data.h from kernel_arch_func.h
* Never include kernel.h from kernel_struct.h either directly or
indirectly. Only add the kernel structures that must be referenced
from public arch headers in this file.
- Relocate syscall_handler.h to include/ so it can be used in the
public code. This is necessary because many user-mode public codes
reference the functions defined in this header.
- Relocate kernel_arch_thread.h to include/arch/*/thread.h. This is
necessary to provide architecture-specific thread definition for
'struct k_thread' in kernel.h.
- Remove any private header dependencies from public headers using
the following methods:
* If dependency is not required, simply omit
* If dependency is required,
- Relocate a portion of the required dependencies from the
private header to an appropriate public header OR
- Relocate the required private header to make it public.
This commit supersedes #20047, addresses #19666, and fixes#3056.
Signed-off-by: Stephanos Ioannidis <root@stephanos.io>
These calls are buildable on common sanitycheck platforms, but are not
invoked at runtime in any tests accessible to CI. The changes are
mostly mechanical, so the risk is low, but this commit is separated
from the main API change to allow for more careful review.
Signed-off-by: Andy Ross <andrew.j.ross@intel.com>
The solution from #14312 of using -isystem to prioritize the position of
the libc directory bypasses the effect of -ffreestanding with respect to
libc symbols expected to be present in a non-hosted environment.
Further, it breaks C++ with the ARM Embedded toolchain as the system
fails to find the right file with #include_next.
Use a more fine-grained solution that explicitly includes the underlying
newlib header required for <inttypes.h> support before moving on to
include the next available one, whether system or non-system.
Closes#17564
Signed-off-by: Peter Bigot <peter.bigot@nordicsemi.no>
With the upcoming riscv64 support, it is best to use "riscv" as the
subdirectory name and common symbols as riscv32 and riscv64 support
code is almost identical. Then later decide whether 32-bit or 64-bit
compilation is wanted.
Redirects for the web documentation are also included.
Then zephyrbot complained about this:
"
New files added that are not covered in CODEOWNERS:
dts/riscv/microsemi-miv.dtsi
dts/riscv/riscv32-fe310.dtsi
Please add one or more entries in the CODEOWNERS file to cover
those files
"
So I assigned them to those who created them. Feel free to readjust
as necessary.
Signed-off-by: Nicolas Pitre <npitre@baylibre.com>
move misc/util.h to sys/util.h and
create a shim for backward-compatibility.
No functional changes to the headers.
A warning in the shim can be controlled with CONFIG_COMPAT_INCLUDES.
Related to #16539
Signed-off-by: Anas Nashif <anas.nashif@intel.com>
move misc/libc-hooks.h to sys/libc-hooks.h and
create a shim for backward-compatibility.
No functional changes to the headers.
A warning in the shim can be controlled with CONFIG_COMPAT_INCLUDES.
Related to #16539
Signed-off-by: Anas Nashif <anas.nashif@intel.com>
move misc/errno_private.h to sys/errno_private.h and
create a shim for backward-compatibility.
No functional changes to the headers.
A warning in the shim can be controlled with CONFIG_COMPAT_INCLUDES.
Related to #16539
Signed-off-by: Anas Nashif <anas.nashif@intel.com>
In ARM builds with support for user mode, i.e. with
CONFIG_USERSPACE=y, we need to align the beginning
of the heap space, to respect the ARM MPU region
alignment requirements.
Signed-off-by: Ioannis Glaropoulos <Ioannis.Glaropoulos@nordicsemi.no>
USED_RAM_END_ADDR is not used when Kconfig option
CONFIG_NEWLIB_LIBC_ALIGNED_HEAP_SIZE is defined,
therefore, we do not need to define the macro in
that specific case.
Signed-off-by: Ioannis Glaropoulos <Ioannis.Glaropoulos@nordicsemi.no>
Add an option for building with newlib-nano library.
The newlib-nano library for ARM embedded processors is a part of the
GNU Tools for ARM Embedded Processors.
Add mem_alloc tests with newlib nano.
Signed-off-by: Benoit Leforestier <benoit.leforestier@gmail.com>
Depending on configuration, this value could end up as
a variable and not an array symbol, causing a crash if
newlib decides to call _sbrk on behalf of a user thread,
which needs to perform arithmetic on it.
Signed-off-by: Andrew Boie <andrew.p.boie@intel.com>
Update the files which contain no license information with the
'Apache-2.0' SPDX license identifier. Many source files in the tree are
missing licensing information, which makes it harder for compliance
tools to determine the correct license.
By default all files without license information are under the default
license of Zephyr, which is Apache version 2.
Signed-off-by: Anas Nashif <anas.nashif@intel.com>
When we build with newlib we don't set -nostdinc. In that case make
sure that we leave it to the toolchain to set the system include paths.
The one exception to leaving to the toolchain to set the system include
paths is the path to the newlib headers. Since we build
with -ffreestanding we need to make sure the newlib header path is the
before the toolchain headers. Otherwise the toolchain's 'freestanding'
headers get picked up and that causes issues (for example getting PRI*64
defined properly from inttypes.h due to __STDC_HOSTED__ being '0').
For newlib we accomplish this by having the only system header specified
by zephyr_system_include_directories() being just the newlib headers.
Note: for minlibc we leave things alone as things just happen to work as
the -I include of the libc headers takes precedence over -isystem so we
get the libc headers over the toolchain ones. For the newlib case it
appears that setting both -I and -isystem for the same dir causes the
-I to be ignored.
Fixes#14310
Signed-off-by: Kumar Gala <kumar.gala@linaro.org>
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>
In case newlib is enabled, but POSIX subsys isn't, there're adhoc
implementations of read() and write() which work only with adhoc
stdin/stdout emulation layer. These are backed by system calls named
like "read" and "write". Rename all these functions and syscalls to
explicitly mention stdin/stdout in the names, to free namespace
for the implementation of generic read/write syscalls which will
integrate with POSIX fdtable.
Signed-off-by: Paul Sokolovsky <paul.sokolovsky@linaro.org>
This is an integral part of userspace and cannot be used
on its own. Fold into the main userspace configuration.
Signed-off-by: Andrew Boie <andrew.p.boie@intel.com>
We need a generic name for the partition containing
essential C library globals. We're going to need to
add the stack canary guard to this area so user mode
can read it.
Signed-off-by: Andrew Boie <andrew.p.boie@intel.com>
This was never a long-term solution, more of a gross hack
to get test cases working until we could figure out a good
end-to-end solution for memory domains that generated
appropriate linker sections. Now that we have this with
the app shared memory feature, and have converted all tests
to remove it, delete this feature.
To date all userspace APIs have been tagged as 'experimental'
which sidesteps deprecation policies.
Signed-off-by: Andrew Boie <andrew.p.boie@intel.com>
* Newlib now defines a special z_newlib_partition containing
all globals relevant to newlib. Most of these are in libc.a
with a heap tracking variable in newlib's hooks.
* Both C libraries now expose a k_mem_partition containing the
bounds of the malloc heap arena. Threads that want to use
libc malloc() will need to add this to their memory domain.
* z_newlib_get_heap_bounds has been removed, in favor of the
memory partition for the heap arena
* ztest now includes the C library partitions in its memory
domain.
* The mem_alloc test now runs in user mode to prove that this
all works for both C libraries.
Signed-off-by: Andrew Boie <andrew.p.boie@intel.com>
These changes were obtained by running a script created by
Ulf Magnusson <Ulf.Magnusson@nordicsemi.no> for the following
specification:
1. Read the contents of all dts_fixup.h files in Zephyr
2. Check the left-hand side of the #define macros (i.e. the X in
#define X Y)
3. Check if that name is also the name of a Kconfig option
3.a If it is, then do nothing
3.b If it is not, then replace CONFIG_ with DT_ or add DT_ if it
has neither of these two prefixes
4. Replace the use of the changed #define in the code itself
(.c, .h, .ld)
Additionally, some tweaks had to be added to this script to catch some
of the macros used in the code in a parameterized form, e.g.:
- CONFIG_GPIO_STM32_GPIO##__SUFFIX##_BASE_ADDRESS
- CONFIG_UART_##idx##_TX_PIN
- I2C_SBCON_##_num##_BASE_ADDR
and to prevent adding DT_ prefix to the following symbols:
- FLASH_START
- FLASH_SIZE
- SRAM_START
- SRAM_SIZE
- _ROM_ADDR
- _ROM_SIZE
- _RAM_ADDR
- _RAM_SIZE
which are surprisingly also defined in some dts_fixup.h files.
Finally, some manual corrections had to be done as well:
- name##_IRQ -> DT_##name##_IRQ in uart_stm32.c
Signed-off-by: Andrzej Głąbek <andrzej.glabek@nordicsemi.no>
read/write/etc. are defined in case CONFIG_POSIX_API is defined, and
we shouldn't provide duplicates.
Signed-off-by: Paul Sokolovsky <paul.sokolovsky@linaro.org>
write() function is not supposed to change buffer passed to it, so
propagate const pointer param to all write-like functions used/defined
in this file.
Signed-off-by: Paul Sokolovsky <paul.sokolovsky@linaro.org>
The read/write implementations call directly into the console drivers
using the hook mechanism, causing faults if invoked from user mode.
Add system calls for read() and write() such that we do a privilege
elevation first.
Signed-off-by: Andrew Boie <andrew.p.boie@intel.com>
The errno "variable" is required to be thread-specific.
It gets defined to a macro which dereferences a pointer
returned by a kernel function.
In user mode, we cannot simply read/write the thread struct.
We do not have thread-local storage mechanism, so for now
use the lowest address of the thread stack to store this
value, since this is guaranteed to be read/writable by
a user thread.
The downside of this approach is potential stack corruption
if the stack pointer goes down this far but does not exceed
the location, since a fault won't be generated in this case.
Signed-off-by: Andrew Boie <andrew.p.boie@intel.com>
We utilize defines like -ESHUTDOWN in the network stack. To support
this errno value with newlib we need to enable
__LINUX_ERRNO_EXTENSIONS__.
Signed-off-by: Kumar Gala <kumar.gala@linaro.org>
Add IEEE 1003.1 Posix Style file system API support.
These API's will internally use corresponding Zephyr
File System API's.
Signed-off-by: Ramakrishna Pallala <ramakrishna.pallala@intel.com>
MPU devices that enforce power-of-two alignment now
specify the size of the buffer used for the newlib heap.
This buffer will be properly aligned and a pointer
exposed in a kernel header, such that it can be added
to a user thread's memory domain configuration if
necessary.
MPU devices that don't have these restrictions allocate
the heap as normal.
In all cases, if an MPU/MMU region needs to be programmed,
the z_newlib_get_heap_bounds() API will return the necessary
information.
Given how precious MPU regions are, no automatic programming
of the MPU is done; applications will need to do this as
needed in their memory domain configurations.
On x86, the x86 MMU-specific code has been moved to arch/x86
using the new z_newlib_get_heap_bounds() API.
Fixes: #6814
Signed-off-by: Andrew Boie <andrew.p.boie@intel.com>
Newlib uses any RAM between _end and the bounds of physical
RAM for the _sbrk() heap. Set up a user-writable region
so that this works properly on x86.
Signed-off-by: Andrew Boie <andrew.p.boie@intel.com>
Calling POSIX exit() function in Zephyr w/newlib leads to printing
"exit" to stdout followed by infinite loop. That message was
printed without a newline though, leading to confusing artifacts
in the console output.
Signed-off-by: Paul Sokolovsky <paul.sokolovsky@linaro.org>
We want to support other toolchain not based on GCC, so the variable is
confusing, use ZEPHYR_TOOLCHAIN_VARIANT instead.
Signed-off-by: Anas Nashif <anas.nashif@intel.com>
CROSS_COMPILE is a KBuild feature that was dropped during the CMake
migration. It is now re-introduced. Documentation for it is still
lacking, but at least it now behaves as expected.
Signed-off-by: Sebastian Bøe <sebastian.boe@nordicsemi.no>
Introducing CMake is an important step in a larger effort to make
Zephyr easy to use for application developers working on different
platforms with different development environment needs.
Simplified, this change retains Kconfig as-is, and replaces all
Makefiles with CMakeLists.txt. The DSL-like Make language that KBuild
offers is replaced by a set of CMake extentions. These extentions have
either provided simple one-to-one translations of KBuild features or
introduced new concepts that replace KBuild concepts.
This is a breaking change for existing test infrastructure and build
scripts that are maintained out-of-tree. But for FW itself, no porting
should be necessary.
For users that just want to continue their work with minimal
disruption the following should suffice:
Install CMake 3.8.2+
Port any out-of-tree Makefiles to CMake.
Learn the absolute minimum about the new command line interface:
$ cd samples/hello_world
$ mkdir build && cd build
$ cmake -DBOARD=nrf52_pca10040 ..
$ cd build
$ make
PR: zephyrproject-rtos#4692
docs: http://docs.zephyrproject.org/getting_started/getting_started.html
Signed-off-by: Sebastian Boe <sebastian.boe@nordicsemi.no>
This patch adds in the include to get the CONFIG_SRAM definitions on
systems which are using device tree generation.
Change-Id: Ie61efbcdfc900a2c682a2fb8bbaecb61071a20f8
Signed-off-by: Andy Gross <andy.gross@linaro.org>
Replace the existing Apache 2.0 boilerplate header with an SPDX tag
throughout the zephyr code tree. This patch was generated via a
script run over the master branch.
Also updated doc/porting/application.rst that had a dependency on
line numbers in a literal include.
Manually updated subsys/logging/sys_log.c that had a malformed
header in the original file. Also cleanup several cases that already
had a SPDX tag and we either got a duplicate or missed updating.
Jira: ZEP-1457
Change-Id: I6131a1d4ee0e58f5b938300c2d2fc77d2e69572c
Signed-off-by: David B. Kinder <david.b.kinder@intel.com>
Signed-off-by: Kumar Gala <kumar.gala@linaro.org>
added USED_RAM_SIZE and MAX_HEAP_SIZE definitions for
SOC_RISCV32_QEMU and SOC_RISCV32_PULPINO.
Otherwise, not passing sanitycheck
Change-Id: Ia32b12e1694dc472e9f7f9eb10c5f2e12e928c3a
Signed-off-by: Jean-Paul Etienne <fractalclone@gmail.com>
We get these out of system.h instead. A clause in libc-hooks.c
for newlib added since we don't get RAM size from
CONFIG_SRAM_BASE_ADDRESS.
Change-Id: Ic35113395b951f625e8e29658afe19c525037964
Signed-off-by: Andrew Boie <andrew.p.boie@intel.com>
Some variants of newlib build and expect namespace protected stubs
(typically having an underscore prefix). To support such newlib variants
change all the stubs to the namespace protect version and use function
aliases to support the nonprotected namespace version.
Change-Id: I6a4162eca949afec96b152ffe6f60b87c4496c4d
Signed-off-by: Kumar Gala <kumar.gala@linaro.org>
We only need to implement fstat(), so drop the _fstat implementation and
have fstat() match the newlib docs for minimal implementation and only
set st_mode = S_IFCHR.
Change-Id: Iba9042707d1ee5975ab98293cfe20e2996b17c05
Signed-off-by: Kumar Gala <kumar.gala@linaro.org>
Although it's unclear why x86 has a different naming convention,
this scales better.
Change-Id: I939b9d4d04b1833391304700a7c12c9c8607192f
Signed-off-by: Andrew Boie <andrew.p.boie@intel.com>
The RAM config symbols need to be updated as they were named by the
commit:
1a1f7fd arc: make SRAM/DCCM values configurable
Change-Id: Ieeb06de2f77b4c9e10a0bc32d8318834ce150f5e
Signed-off-by: Bogdan Davidoaia <bogdan.m.davidoaia@intel.com>
