Optimization issue in RISC-V BSP

[Gedare Bloom]

On Thu, Jul 27, 2017 at 7:43 PM, Denis Obrezkov <denisobrezkov at gmail.com> wrote:
> I didn't want to enable optimization because I was afraid of new mistakes.
> So, I enabled -Os and now I have:
> _Terminate (the_source=the_source at entry=INTERNAL_ERROR_CORE,
> the_error=the_error at entry=3)
>     at
> /home/reprofy/Projects/riscv/rtems/development/rtems/kernel/rtems-riscv/c/src/../../cpukit/score/src/interr.c:44
> 44        _CPU_Fatal_halt( the_source, the_error );
> (gdb) i s
> #0  _Terminate (the_source=the_source at entry=INTERNAL_ERROR_CORE,
> the_error=the_error at entry=3)
>     at
> /home/reprofy/Projects/riscv/rtems/development/rtems/kernel/rtems-riscv/c/src/../../cpukit/score/src/interr.c:44
> #1  0x20401672 in _Internal_error
> (core_error=core_error at entry=INTERNAL_ERROR_WORKSPACE_ALLOCATION)
>     at
> /home/reprofy/Projects/riscv/rtems/development/rtems/kernel/rtems-riscv/c/src/../../cpukit/score/src/interr.c:51
> #2  0x20404968 in _Workspace_Allocate_or_fatal_error (size=<optimized out>)
> at ../../cpukit/../../../hifive1/lib/include/rtems/score/heapimpl.h:137
> #3  0x20401f76 in _Objects_Extend_information (information=0x80000ad4
> <_RTEMS_tasks_Information>)
>     at
> /home/reprofy/Projects/riscv/rtems/development/rtems/kernel/rtems-riscv/c/src/../../cpukit/score/src/objectextendinformation.c:70
> #4  0x20402110 in _Objects_Do_initialize_information
> (information=information at entry=0x80000ad4 <_RTEMS_tasks_Information>,
> the_api=the_api at entry=OBJECTS_CLASSIC_API,
>     the_class=<optimized out>, maximum=maximum at entry=124, size=<optimized
> out>, is_string=<optimized out>,
> maximum_name_length=maximum_name_length at entry=4)
>     at
> /home/reprofy/Projects/riscv/rtems/development/rtems/kernel/rtems-riscv/c/src/../../cpukit/score/src/objectinitializeinformation.c:118
> #5  0x20402e3a in _Thread_Initialize_information
> (information=information at entry=0x80000ad4 <_RTEMS_tasks_Information>,
> the_api=the_api at entry=OBJECTS_CLASSIC_API,
>     the_class=the_class at entry=1, maximum=124,
> is_string=is_string at entry=false,
> maximum_name_length=maximum_name_length at entry=4)
>     at
> /home/reprofy/Projects/riscv/rtems/development/rtems/kernel/rtems-riscv/c/src/../../cpukit/score/src/thread.c:57
> #6  0x20400ff8 in _RTEMS_tasks_Manager_initialization () at
> /home/reprofy/Projects/riscv/rtems/development/rtems/kernel/rtems-riscv/c/src/../../cpukit/rtems/src/tasks.c:72
> #7  0x2040112e in rtems_initialize_executive () at
> /home/reprofy/Projects/riscv/rtems/development/rtems/kernel/rtems-riscv/c/src/../../cpukit/sapi/src/exinit.c:92
> #8  0x20400496 in boot_card (cmdline=<optimized out>) at
> /home/reprofy/Projects/riscv/rtems/development/rtems/kernel/rtems-riscv/c/src/lib/libbsp/riscv32/hifive1/../../shared/bootcard.c:78
>
> Though, the size of executable is much lower (almost two times),
> but I get this mistake. And as for now I can't understand do I have the
> error
> due to optimization or has the optimization revealed another issue?
>

Most likely it has revealed another issue. It appears that the
workspace is out of room and the allocate request fails. This could be
a problem in the application's configuration (CONFIGURE_XXX macros) or
is another side-effect of the memory constraints on your device. How
much workspace is there available in your linker script, can you tell?
Are you using unified heap and workspace?


> --
> Regards, Denis Obrezkov
>
> _______________________________________________
> devel mailing list
> devel at rtems.org
> http://lists.rtems.org/mailman/listinfo/devel