It looks like, at some point in the past, initializing thread stacks
was the responsibility of the arch layer. After that was centralized,
we forgot to remove the related conditional header inclusion. Fixed.
Signed-off-by: Charles E. Youse <charles.youse@intel.com>
* use IRQ_ACT to check nest interrupt
* implement an asm macro for nest interrupt check
* no need to use exc_nest_count, remove it
Signed-off-by: Wayne Ren <wei.ren@synopsys.com>
* do not use a specific variable (saved_r0/saved_sp) to free r0
/exchange sp, but use stack to do that.
* it will make code scalable, e.g. for SMP, no need to define
variables for each core
Signed-off-by: Wayne Ren <wei.ren@synopsys.com>
* as ilink has a copy in ERET, it can be reused as a gp
* use ilink to do the job of arc_exc_saved_sp to save 4 bytes
and save some cycles because no load/store of memory
* it will make code scalable, e.g. for SMP, no need to
define variables for each core
Signed-off-by: Wayne Ren <wei.ren@synopsys.com>
This is now called z_arch_esf_t, conforming to our naming
convention.
This needs to remain a typedef due to how our offset generation
header mechanism works.
Signed-off-by: Andrew Boie <andrew.p.boie@intel.com>
We introduce a new z_fatal_print() API and replace all
occurrences of exception handling code to use it.
This routes messages to the logging subsystem if enabled.
Otherwise, messages are sent to printk().
Signed-off-by: Andrew Boie <andrew.p.boie@intel.com>
* z_NanoFatalErrorHandler() is now moved to common kernel code
and renamed z_fatal_error(). Arches dump arch-specific info
before calling.
* z_SysFatalErrorHandler() is now moved to common kernel code
and renamed k_sys_fatal_error_handler(). It is now much simpler;
the default policy is simply to lock interrupts and halt the system.
If an implementation of this function returns, then the currently
running thread is aborted.
* New arch-specific APIs introduced:
- z_arch_system_halt() simply powers off or halts the system.
* We now have a standard set of fatal exception reason codes,
namespaced under K_ERR_*
* CONFIG_SIMPLE_FATAL_ERROR_HANDLER deleted
* LOG_PANIC() calls moved to k_sys_fatal_error_handler()
Signed-off-by: Andrew Boie <andrew.p.boie@intel.com>
* if thread switchs in interrupt, the target sp must be in
thread's kernel stack, no need to do hardware sp switch
Signed-off-by: Wayne Ren <wei.ren@synopsys.com>
If the offset within the thread struct to the
ARC arch-specific 'relinquish_cause' member is too
large, ld_s instructions referencing it will not
compile. This happens easily if CONFIG_THREAD_NAME
reserves a name buffer within the thread struct, since
all the arch-specific members come last.
Use the regular 'ld' instruction instead.
Signed-off-by: Andrew Boie <andrew.p.boie@intel.com>
* here use new style z_arch_switch,i.e. CONFIG_USE_SWITCH
to replace old swap mechnism.
* it's also required by SMP support
Signed-off-by: Wayne Ren <wei.ren@synopsys.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/printk.h to sys/printk.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/dlist.h to sys/dlist.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/__assert.h to sys/__assert.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>
ARC EM4 is just a baseline configuration of ARC EM family of CPU cores.
But with addition of more featuers like caches, DSP extensions etc
we're effectively getting EM6, EM5D etc templates.
So to not confuse users let's talk about families of ARC cores
as that's what makes sense together with extra features but not
templates itself.
Signed-off-by: Alexey Brodkin <abrodkin@synopsys.com>
The compiler generates errors of the form
error: "CONFIG_STACK_POINTER_RANDOM" is not defined, evaluates to 0
[-Werror=undef]
when -Wundef is used and the config option was turned off. Change
check to if defined().
Signed-off-by: Bradley Bolen <bbolen@lexmark.com>
The compiler generates errors of the form
error: "CONFIG_ARC_FIRQ" is not defined, evaluates to 0 [-Werror=undef]
when -Wundef is used and the config option was turned off. Change
check to if defined().
Signed-off-by: Bradley Bolen <bbolen@lexmark.com>
The compiler generates errors of the form
error: "CONFIG_USERSPACE" is not defined, evaluates to 0 [-Werror=undef]
when -Wundef is used and the config option was turned off. Change
check to if defined().
Signed-off-by: Bradley Bolen <bbolen@lexmark.com>
Update the name of mem-domain API function to add a partition
so that it complies with the 'z_' prefix convention. Correct
the function documentation.
Signed-off-by: Ioannis Glaropoulos <Ioannis.Glaropoulos@nordicsemi.no>
The struct _caller_saved is not used. Most architectures put
automatically the registers onto stack, in others architectures the
exception code does it.
Signed-off-by: Flavio Ceolin <flavio.ceolin@intel.com>
The struct _kernel_ach exists only because ARC' s port needed it, in
all other ports this was defined as an empty struct. Turns out that
this struct is not required even for ARC anymore, this is a legacy
code from nanokernel time.
Signed-off-by: Flavio Ceolin <flavio.ceolin@intel.com>
Right now only numerical values are printed which must
be looked up in the Designware ARCv2 ISA Programmer's
Reference, which is not public.
Add a non-default Kconfig to print more information at
the expense of footprint, and enable it for all the simulator
targets.
We only print code/parameter details for machine check and
protection violations, more may be added later as desired.
This should cover all the exceptions we commonly encounter
for memory protection.
Signed-off-by: Andrew Boie <andrew.p.boie@intel.com>
* fix the stack allocation and initialization
for mpu stack guard when USERSPACE is not configured
* fixes#15163
Signed-off-by: Wayne Ren <wei.ren@synopsys.com>
* it's not reliable to use exc_nest_count to decide nest interrupt.
A better option is to use IRQ_ACT
* ext_nest_count is just used to switch interrupt stack
Signed-off-by: Wayne Ren <wei.ren@synopsys.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>
This macro is slated for complete removal, as it's not possible
on arches with an MPU stack guard to know the true buffer bounds
without also knowing the runtime state of its associated thread.
As removing this completely would be invasive to where we are
in the 1.14 release, demote to a private kernel Z_ API instead.
The current way that the macro is being used internally will
not cause any undue harm, we just don't want any external code
depending on it.
The final work to remove this (and overhaul stack specification in
general) will take place in 1.15 in the context of #14269Fixes: #14766
Signed-off-by: Andrew Boie <andrew.p.boie@intel.com>
Rename reserved function names in arch/ subdirectory. The Python
script gen_priv_stacks.py was updated to follow the 'z_' prefix
naming.
Signed-off-by: Patrik Flykt <patrik.flykt@intel.com>
Similar issue to what was fixed earlier in the MPUv3
code. start + size should be <= r_addr_end. Fixes
a problem where the last byte of an MPU region is
incorrectly reported as out-of-bounds.
Fixes: #15131
Signed-off-by: Andrew Boie <andrew.p.boie@intel.com>
* mpu stack guard exception is a kind of mpu violation exception
* use SW way to distingusih it from other mpu vioation exception
Signed-off-by: Wayne Ren <wei.ren@synopsys.com>
* HW_STACK_PROTECTION can be done by STACK_
CHECKING or MPU stack guard. ARC STACK_CHECKING is prioritized
over MPU-based stack guard
Signed-off-by: Wayne Ren <wei.ren@synopsys.com>
stack check exception may come out with other protection
vilation, e.g. MPU read/write. So the possible paramter
will be 0x02 | [0x4 | 0x8].
Signed-off-by: Wayne Ren <wei.ren@synopsys.com>
BIT macro uses an unsigned int avoiding implementation-defined behavior
when shifting signed types.
MISRA-C rule 10.1
Signed-off-by: Flavio Ceolin <flavio.ceolin@intel.com>
This commit cleans up names of system power management functions by
assuring that:
- all functions start with 'sys_pm_' prefix
- API functions which should not be exposed to the user start with '_'
- name of the function hints at its purpose
Signed-off-by: Piotr Mienkowski <piotr.mienkowski@gmail.com>
The code was probing the byte immediately after the last byte
of the buffer, instead of the last byte of the buffer.
Signed-off-by: Andrew Boie <andrew.p.boie@intel.com>
It's simpler and cleaner to move read_timer_start_of_isr to
_isr_demux. But the interrupt latency may be not accurate.
Signed-off-by: Wayne Ren <wei.ren@synopsys.com>
Charles E. Youse