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C++ project linking problem

F D

Hi everyone,

I created a C++ project and implemented some basic classes. The compilation works fine but in the linking process I get some errors. I don't really know what I do wrong. I assume someone familiar with using C++ and RealView can help.

Here are the error messages I get:

linking...
.\Obj\OrigaII_Test.axf: Error: L6218E: Undefined symbol __aeabi_unwind_cpp_pr0 (referred from new.o).
.\Obj\OrigaII_Test.axf: Error: L6218E: Undefined symbol __rt_new_handler_addr (referred from new.o).
.\Obj\OrigaII_Test.axf: Error: L6218E: Undefined symbol abort (referred from arm_exceptions_terminate.o).
.\Obj\OrigaII_Test.axf: Error: L6218E: Undefined symbol __rt_eh_globals_addr (referred from arm_exceptions_globs.o).
Target not created

Thank you,
Frank

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  • 0 in reply to Philip Philipov

    Hi Philip,

    you should not publish third party source code files, it is legally not correct!

    Here is a part of a startup-code that shows the parts of interest:

    ;  Enter User Mode and set its Stack Pointer

                EXPORT __initial_sp

 ; Enter the C code -------------------------------------------------------------

                IMPORT  __main
                LDR     R0, =__main
                BX      R0

.
.
.

; User Initial Stack & Heap
                AREA    |.text|, CODE, READONLY

                IMPORT  __use_two_region_memory
                EXPORT  __user_initial_stackheap
__user_initial_stackheap

                LDR     R0, =  Heap_Mem
                LDR     R1, =(Stack_Mem + USR_Stack_Size)
                LDR     R2, = (Heap_Mem +      Heap_Size)
                LDR     R3, = Stack_Mem
                BX      LR
                ENDIF

    Take a look at other startup files in your code samples if you need more info. I hope this helps.

    Frank

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  • 0 in reply to F D

    Hi F D
    Thanks for your opinion.

    I added EXPORT __initial_sp only because i have other codes.

    ;  Enter User Mode and set its Stack Pointer

                EXPORT __initial_sp ; <---- here
                MSR     CPSR_c, #Mode_USR
                MOV     SP, R0
                SUB     SL, SP, #USR_Stack_Size


; Enter the C code

                IMPORT  __main
                LDR     R0, =__main
                BX      R0


; User Initial Stack & Heap
                AREA    |.text|, CODE, READONLY

                IMPORT  __use_two_region_memory
                EXPORT  __user_initial_stackheap
__user_initial_stackheap

                LDR     R0, = Heap_Mem
                LDR     R1, = (Stack_Mem + USR_Stack_Size)
                LDR     R2, = (Heap_Mem +      Heap_Size)
                LDR     R3, = Stack_Mem
                BX      LR


    But, the error message is:

    assembling LPC2300.s...
LPC2300.s(500): error: A1145E: Undefined exported symbol '__initial_sp'


    The Micro-Lib option is checked.

    What can i do?

  • 0 in reply to Philip Philipov

    Again take a look at the startup files provided in your RealView MDK installation (for example Keil\ARM\Startup\Philips\LPC2300.s).

    Missing is the declaration for __initial_sp defined as:

                    AREA    STACK, NOINIT, READWRITE, ALIGN=3

Stack_Mem       SPACE   USR_Stack_Size
__initial_sp    SPACE   ISR_Stack_Size

  • 0 in reply to Robert  

    Thanks,

    i used LPC2300.s 2006 version, i downloaded new version and the problem is solved.

    Thank you very much again.