We need a format code for struct packing that fits in
a pointer value, "I" is fixed at 32-bit.
The conversion of string to pointer value now prints
8 bytes. This works for 32-bit since the leading
4 digits are always zero.
The replaced length check uses sizeof(void *) and not 4.
Signed-off-by: Andrew Boie <andrew.p.boie@intel.com>
Promote a handy and often-overlooked sys.exit() feature: Passing it a
string (or any other non-int object) prints it to stderr and exits with
status 1.
See the documentation at
https://docs.python.org/3/library/sys.html#sys.exit.
This indirectly prints some errors to stderr that previously went to
stdout.
Signed-off-by: Ulf Magnusson <Ulf.Magnusson@nordicsemi.no>
Not needed in Python. Detected by check C0325 in pylint3.
Also replace an
if len(tag):
with just
if tag:
Empty strings, byte strings, lists, etc., are falsy in Python.
Signed-off-by: Ulf Magnusson <Ulf.Magnusson@nordicsemi.no>
Needs to be at the beginning of the file. Fixes a pylint warning:
scripts/process_gperf.py:26:-1: W0105: String statement has no
effect (pointless-string-statement)
Signed-off-by: Ulf Magnusson <Ulf.Magnusson@nordicsemi.no>
Python 3.7 throws a FutureWarning when it thinks it
has found a nested set in a regular expression.
We weren't actually; just trying to match some brackets.
Escape them instead. No functional difference.
Fixes: #11961
Signed-off-by: Andrew Boie <andrew.p.boie@intel.com>
This patch adds the generation and incorporation of privileged stack
regions that are used by ARM user mode threads. This patch adds the
infrastructure for privileged stacks. Later patches will utilize the
generated stacks and helper functions.
Signed-off-by: Chunlin Han <chunlin.han@linaro.org>
Signed-off-by: Andy Gross <andy.gross@linaro.org>
It is desired behaviour that when 'make VERBOSE=1' is invoked, the
underlying scripts will be invoked in 'verbose mode', e.g. they have
the flag --verbose passed to them.
This patch modifies all the underlying scripts in the build system to
inject --verbose into the command line when the environment variable
VERBOSE is set.
The environment variable VERBOSE is a CMake concept. CMake will
generate Makefile's that read this environment variable and try to
behave accordingly. Unfortunately, the generated ninja build systems
behave differently and will have to be invoked like this:
VERBOSE=1 ninja -v
This fixes#4851
Signed-off-by: Sebastian Bøe <sebastian.boe@nordicsemi.no>
All system calls made from userspace which involve pointers to kernel
objects (including device drivers) will need to have those pointers
validated; userspace should never be able to crash the kernel by passing
it garbage.
The actual validation with _k_object_validate() will be in the system
call receiver code, which doesn't exist yet.
- CONFIG_USERSPACE introduced. We are somewhat far away from having an
end-to-end implementation, but at least need a Kconfig symbol to
guard the incoming code with. Formal documentation doesn't exist yet
either, but will appear later down the road once the implementation is
mostly finalized.
- In the memory region for RAM, the data section has been moved last,
past bss and noinit. This ensures that inserting generated tables
with addresses of kernel objects does not change the addresses of
those objects (which would make the table invalid)
- The DWARF debug information in the generated ELF binary is parsed to
fetch the locations of all kernel objects and pass this to gperf to
create a perfect hash table of their memory addresses.
- The generated gperf code doesn't know that we are exclusively working
with memory addresses and uses memory inefficently. A post-processing
script process_gperf.py adjusts the generated code before it is
compiled to work with pointer values directly and not strings
containing them.
- _k_object_init() calls inserted into the init functions for the set of
kernel object types we are going to support so far
Issue: ZEP-2187
Signed-off-by: Andrew Boie <andrew.p.boie@intel.com>
