YAMAMOTO Takashi 0e76a16545 tools/esp32/backtrace.gdbscript: don't modify registers
* it wasn't intended.

* it doesn't always work:

    (gdb) source tools/esp32/backtrace.gdbscript
    (gdb) esp32_bt 0x40139706 0x80139811 0x3ffafd40
    Attempt to assign to an unmodifiable value.
    (gdb)
2021-06-28 01:11:34 -05:00
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