The uniprocessor schedulers had some special case logic for the
PRIORITY_PSEUDO_ISR priority. Tasks with a priority of PRIORITY_PSEUDO_ISR
were allowed to preempt a not preemptible task. If other higher priority task
are made ready while a PRIORITY_PSEUDO_ISR task preempts a not preemptible
task, then the other tasks run before the not preemptible task. This made the
RTEMS_NO_PREEMPT mode ineffective.
Remove the PRIORITY_PSEUDO_ISR special case logic. This simplifies the
uniprocessor schedulers. Move the uniprocessor-specific scheduler support to
the new header file <rtems/score/scheduleruniimpl.h>.
Close#2365.
The build option definitions were rearranged such that the option
definitions used in the linker script were not available. This caused
linker errors when building.
This alters the AArch64 page table generation and mapping code and MMU
configuration to use page table level 0 in addition to levels 1, 2, and
3. This allows the mapping of up to 48 bits of memory space and is the
maximum that can be mapped without relying on additional processor
extensions. Mappings are restricted based on the number of physical
address bits that the CPU supports.
In case the Newlib _REENT_THREAD_LOCAL configuration option is enabled, the
struct _reent is not defined (there is only a forward declaration in
<sys/reent.h>). Instead, the usual members of struct _reent are available as
dedicatd thread-local storage objects.
Update #4560.
Sort the .noinit* input sections by name first, then by alignment if two
sections have the same name. This allows the placement of begin/end symbols to
initialize some areas with a special value.
Update #4678.
When fdt_get_string return null, `namep` is not correctly reset.
From the document of `fdt_getprop_by_offset`, the parameter `namep` will
be always overwritten (that is, it will be overwritten without exception
of error occurance).
As for the caller (like
e097c097fe/native/jni/magiskboot/dtb.cpp (L42)),
the code may be like:
```cpp
size_t size;
const char *name;
auto *value = fdt_getprop_by_offset(fdt, prop, &name, &size);
```
and if `value == nullptr`, `size` is also be overwritten correctly but
`name` is not, which is quite inconsistent.
This commit makes sure `name` and `size` behavior consistently (reset to
reasonable value) when error occurs.
Signed-off-by: LoveSy <shana@zju.edu.cn>
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
Commit 21275b58a5 ("score: Static
Objects_Information initialization") introduced an off-by-one error in the
maintenance of inactive objects.
Close#4677.
Place the statically allocated object control blocks, local tables, and thread
queue heads into the dedicated .noinit intput sections. The output section is
not zero initialized. Placing these elements into the .noinit section reduces
the system initialization time by decreasing the .bss section size.
It may improve the cache efficiency since the mostly read local tables are
placed in a contiguous memory area.
Update #4678.
Sort the .noinit* input sections by name first, then by alignment if two
sections have the same name. This allows the placement of begin/end symbols to
initialize some areas with a special value.
Update #4678.
Exceptions during system initialization work only on targets which do not need
a registration of exception frames during the global construction. In
particular, targets which use the DWARF2 unwinder cannot use exceptions during
system initialization.
