[SOLVED]Reading memory with J-Link Commander and MMU

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  • [SOLVED]Reading memory with J-Link Commander and MMU

    Hi!

    I use a ARM7TDMI core:

    Simple question : in J-Link Commander, if I execute a mem32 command to read memory when the MMU is activated, does the mem32 command will return the content of the physical memory location or the virtual memory location as converted by the MMU?

    In other word, does J-Link commander ignore the MMU state to read memory?

    Also, but I understand that this may not be the good forum to ask this question, does gdb (I'm using gnu gdb to debug) ignore the MMU when reading memory?

    Thanks in advance!

  • Hi,

    GDB just requests memory from the GDB stub (J-Link GDBServer).
    J-Link GDBServer uses the J-Link to access the target.

    For ARM7/9 J-Link will "see" the same memory the CPU sees since the memory is read via the CPU.
    So the MMU is taken into consideration when reading / writing memory.


    Best regards
    Alex
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