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Original question:

AM5728: ti.sysbios.family.c64p.Exception

AM5728: ti.sysbios.family.c64p.Exception

Ranganath V N
Intellectual 475 points
Part Number: AM5728
Other Parts Discussed in Thread: SYSBIOS

Hi,

we tried o debug using jtag we are getting the call stack as below shown in the attached image.

And its hard to find out from which function we are getting this exception.

  • 0
    TI__Guru 50045 points

    Please refer to Ch 6 for the detail description on DSP Exception.

    https://www.ti.com/lit/pdf/spru732

    You can try to set a breakpoint at the entry of ti_sysbios_family_c64p_Exception_dispatch_E() and dump the exception registers.

    NRP register should hold the return address which is where the exception occurred.

    Regards,
    Stanley

  • 0 in reply to Stanley Liu
    Intellectual 475 points

    Hi thanks for the response.

    We have captured the register dump on console as shown below that NRP contains the value zero at the time of exception.

    A0=0x95115970 A1=0x0
    A10=0x0 A11=0x97933c64
    A12=0x950dc300 A13=0x9793cdc6
    A14=0x97934590 A15=0x950dbcf0
    A16=0x654 A17=0x1
    A18=0x0 A19=0x811fd8
    A20=0x811ed8 A21=0x2
    A22=0x97943720 A23=0x0
    A24=0x9793ce25 A25=0x950f1c1a
    A26=0x45 A27=0x0
    A28=0x0 A29=0x811f70
    A2=0x950f462c A3=0x25d00200
    A30=0x0 A31=0x811f70
    A4=0x0 A5=0x950eca30
    A6=0x950d6c10 A7=0x979343e0
    A8=0x0 A9=0x97933c64
    AMR=0x61e2598
    B0=0xffffffff B1=0xffffffff
    B10=0x25 B11=0x0
    B12=0x811fb4 B13=0x2d
    B14=0x9793ceec B15=0x811ff0
    B16=0x0 B17=0x950aef28
    B18=0xa B19=0x950aa180
    B20=0x950e9604 B21=0x811fc8
    B22=0x1b B23=0x950ec5f8
    B24=0x950e9bdc B25=0x1be2
    B26=0x112 B27=0x0
    B28=0x1004 B29=0x12
    B2=0xfffffff7 B3=0x0
    B30=0x97940020 B31=0x0
    B4=0x66666666 B5=0x30666666
    B6=0x0 B7=0x5
    B8=0xfffffff1 B9=0x9793cec8
    EFR=0x2 NRP=0x0
    Exception at 0x0
    ILC=0x15000102
    IRP=0x950ddc04
    ITSR=0x20202020
    Instruction fetch exception
    Internal exception: IERR=0x1
    NTSR=0x20202020
    RILC=0x979483c0
    SSR=0x0
    [t=0x0000000d:c3e8df33] ti.sysbios.family.c64p.Exception: ERROR: $F$S
    ti.sysbios.family.c64p.Exception: line 256: E_exceptionMax: pc = 0x00000000, sp = 0x9793cc9e.
    xdc.runtime.Error.raise: terminating executio

  • 0 in reply to Stanley Liu
    Intellectual 475 points

    This is the disassembly code at the time of exception as in call stack it is showing.