Nios® V Embedded Processor Design Handbook

ID 726952
Date 7/08/2024
Public

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6.2.3.4.2. Correlating Trace Data to Software ELF

By examining the contents of the objdump file, you can compare the captured instruction trace to the software image executed by the Nios® V processor. The objdump file is a copy of the processor's .elf file in a human-readable format that contains C/C++ code fragments, symbolic function names, assembly instructions, and address locations. It is generated automatically after a successful software compilation.
Although the objdump file contains vast amounts of information decoded from the.elf, the Nios® V processor's instructions appear one per line in this file, in the following format:
<Address>: <Opcode> <Assembly Mnemonic>

For example, the instructions from Figure Analyzing results are:

314:  ff010113  addi  sp,sp,-16
318:  00112623  sw    ra,12(sp)
31c:  00812423  sw    s0,8(sp)
320:  01010413  addi  s0,sp,16