Whether a floating-point implementation supports trapping of
floating-point exceptions is implementation defined. At least Qemu,
Cortex-A53, and Cortex-A72 do not support them.
Calls from Thumb code into ARM code require the use of a BLX instruction
and an optional offset prefix instruction. The BLX instruction encoding
requires that the least significant bit be 0 in all cases while the BL
instruction for Thumb-to-Thumb calls includes that bit as part of the
offset. This ensures that bit 0 of the BLX is set to 0 as required by
the instruction encoding specification.
Fix _CPU_SMP_Get_current_processor(), since read from register MPIDR_EL1
(the least significant byte) is not always right,for example the least
significant byte of MPIDR_EL1 is always zero for cortex-a55.
aarch64 has a thread ID register TPIDR_EL1 available for for OS management
purposes. RTEMS stores per-CPU control in TPIDR_EL1 when the core startup,
so we can use _Per_CPU_Get_index() to get current processor index.
update #5064
Coverity CID 1619144
In rtems_aio_completed_list_op() memory was getting freed without releasing
a lock.
This commit should also solve coverity issues 1619145, 1619143 and 1619142
since they all seem to be generated by rtems_aio_completed_list_op().
Closes#5127
- change type unsigned to uint64_t, it might overflowed if
the size is greater the 4GB.
- increase buffer size is to eliminate the compiler's warning
that the buffer might be too small
For example, printf("%+i", 1) prints "+1". However, kvprintf() did
print just "1" for this example. According to PRINTF(3):
A sign must always be placed before a number produced by a signed
conversion.
For "%+r" radix conversions, keep the "+" handling as it is, since this
is a non-standard conversion. For "%+p" pointer conversions, continue
to ignore the sign modifier to be in line with libc.
This change allows to support the ' conversion modifier in the future.
Reviewed by: imp
Pull Request: https://github.com/freebsd/freebsd-src/pull/1310
The struct timespec tv_sec member is of type time_t. Make sure that all
variables related to this member are of the type time_t. This is important for
targets where long is a 32-bit type and time_t a 64-bit type.
Reviewed by: imp
Pull Request: https://github.com/freebsd/freebsd-src/pull/1373
Resurrect proper file comment. Order copyrights according to template. Remove
white space at the end of line. Do error checks early. Define objects under
optional extern "C".
Update #5047.
Modified the body of lio_listio(), to make sure it return -1 and sets
errno to ENOSYS, when RTEMS_POSIX_API is not defined.
The psxenosys test has been modified to test for lio_listio() only
when RTEMS_POSIX_API is not defined. In the test all the puts() have
been removed. If kept they would have made the output of the test depending
on the build configuration, making the content of psxenosys.scn inconsistent.
Removing the puts() makes the .scn file valid regardless of the build
configuration.
Additionally, rtems_aio_notify() in aio_misc.c has been modified,
simplifying it and reducing the part inside the ifdef.
Closes#5125
This commit adds support for lio_listio().
psxaio05 has been added to test the new method.
To avoid code duplication, the body of aio_read and aio_write has been
moved in two helper methods. In this way i can use it also in lio_listio().
In addition to that, a limit on the number of total aio operation enqueued
has been added.
Updates rtems/programs/gsoc#29
This offset is already accounted for by Stack_check_Usable_stack_start()
called from Stack_check_Visit_stack() and adding it a second time can
cause interaction beyond the bounds of the stack.
The default exception handler uses the Save Program Status Register
(SPSR), however, if _ARMV4_Exception_reserved_default() would get
called, the state of this register is unpredictable. Replace potential
calls to _ARMV4_Exception_reserved_default() with an undefined
instruction.
