Are you happy with how the project is going?

[Denis Obrezkov]

2017-06-17 22:11 GMT+03:00 Denis Obrezkov <denisobrezkov at gmail.com>:

>
>>> Can you run RTEMS hello world? Or does printf make that too large? If
>> that is
>> too large, you need to force the tests to switch to printk(). There is
>> some magic
>> in testsuites/configure.ac for that.
>>
>> The low ticker examples (especially the last one) will show configure
>> options
>> to cut memory use.
>>
>> But these are hacks on individual tests. If there is a simulator which
>> has interrupts,
>> I would be testing on it since you will be battling the architecture not
>> a RAM limit.
>> Your project is the port not to put RTEMS into a tiny memory space. :)
>>
>> --joel
>>
>>
>>> --
>>> Regards, Denis Obrezkov
>>>
>>
>> I was able to run the low ticker example further than in my earlier
> attempts.
>
> But now I have a problem with it:
> #0  memset (m=0xb98a0641, c=0, n=102) at ../../../../../gcc-7.1.0/
> newlib/libc/string/memset.c:62
> #1  0x20403168 in _Heap_Initialize (heap=0xb98a0641, heap_area_begin_ptr=0x80002456,
> heap_area_size=7082, page_size=8)
>     at /home/reprofy/Projects/riscv/rtems/development/rtems/
> kernel/rtems-riscv/c/src/../../cpukit/score/src/heap.c:230
> #2  0x20400954 in RTEMS_Malloc_Initialize (areas=0x80003f78, area_count=1,
> extend=0x0)
>     at /home/reprofy/Projects/riscv/rtems/development/rtems/
> kernel/rtems-riscv/c/src/../../cpukit/libcsupport/src/
> malloc_initialize.c:40
> #3  0x20400378 in bsp_work_area_initialize_default
> (area_begin=0x80000e10, area_size=12784) at ../../../../../.././hifive1/
> lib/include/bsp/bootcard.h:158
> #4  0x204003c0 in bsp_work_area_initialize () at
> /home/reprofy/Projects/riscv/rtems/development/rtems/
> kernel/rtems-riscv/c/src/lib/libbsp/riscv32/hifive1/../../
> shared/bspgetworkarea.c:61
> #5  0x204021bc in rtems_initialize_executive () at
> /home/reprofy/Projects/riscv/rtems/development/rtems/
> kernel/rtems-riscv/c/src/../../cpukit/sapi/src/exinit.c:95
> #6  0x2040031c in boot_card (cmdline=0x0) at /home/reprofy/Projects/riscv/
> rtems/development/rtems/kernel/rtems-riscv/c/src/lib/
> libbsp/riscv32/hifive1/../../shared/bootcard.c:76
> #7  0x20400064 in _end_clear_bss () at /home/reprofy/Projects/riscv/
> rtems/development/rtems/kernel/rtems-riscv/c/src/lib/
> libbsp/riscv32/hifive1/start/start.S:116
>
> I want to figure out, why it wants to use memset on these addresses,
> because 0x80004000 is the maximum available address.
>
>
> --
> Regards, Denis Obrezkov
>

I was able to proceed further after adding
#define CONFIGURE_UNIFIED_WORK_AREAS
to init.c of low_ticker example.
Now I get an error:
#0  0x2040d940 in _Chain_Initialize_node (the_node=0x80003ec0) at
../../cpukit/../../../hifive1/lib/include/rtems/score/chainimpl.h:127
#1  0x2040da82 in _Chain_Iterator_initialize (the_chain=0x80000320
<_User_extensions_List>, the_registry=0x8000032c
<_User_extensions_List+12>, the_iterator=0x80003ec0,
    direction=CHAIN_ITERATOR_FORWARD) at
../../cpukit/../../../hifive1/lib/include/rtems/score/chainimpl.h:1049
#2  0x2040de90 in _User_extensions_Iterate (arg=0x80003f18,
visitor=0x2040dd48 <_User_extensions_Fatal_visitor>,
direction=CHAIN_ITERATOR_FORWARD)
    at
/home/reprofy/Projects/riscv/rtems/development/rtems/kernel/rtems-riscv/c/src/../../cpukit/score/src/userextiterate.c:174
#3  0x204036c4 in _User_extensions_Fatal (source=INTERNAL_ERROR_CORE,
error=4) at
../../cpukit/../../../hifive1/lib/include/rtems/score/userextimpl.h:307
#4  0x204036e8 in _Terminate (the_source=INTERNAL_ERROR_CORE, the_error=4)
at
/home/reprofy/Projects/riscv/rtems/development/rtems/kernel/rtems-riscv/c/src/../../cpukit/score/src/interr.c:35
#5  0x20403730 in _Internal_error
(core_error=INTERNAL_ERROR_INTERRUPT_STACK_TOO_SMALL)
    at
/home/reprofy/Projects/riscv/rtems/development/rtems/kernel/rtems-riscv/c/src/../../cpukit/score/src/interr.c:44
#6  0x20403824 in _ISR_Handler_initialization () at
/home/reprofy/Projects/riscv/rtems/development/rtems/kernel/rtems-riscv/c/src/../../cpukit/score/src/isr.c:51
#7  0x20402170 in rtems_initialize_data_structures () at
/home/reprofy/Projects/riscv/rtems/development/rtems/kernel/rtems-riscv/c/src/../../cpukit/sapi/src/exinit.c:82
#8  0x204021bc in rtems_initialize_executive () at
/home/reprofy/Projects/riscv/rtems/development/rtems/kernel/rtems-riscv/c/src/../../cpukit/sapi/src/exinit.c:95
#9  0x2040031c in boot_card (cmdline=0x0) at
/home/reprofy/Projects/riscv/rtems/development/rtems/kernel/rtems-riscv/c/src/lib/libbsp/riscv32/hifive1/../../shared/bootcard.c:76
#10 0xffffcd98 in ?? ()

And I found out that rtems_minimum_stack_size variable is 0xab817bb3.
And I don't know why - in the low ticker example it is set to 512.

-- 
Regards, Denis Obrezkov
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