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docs/system/gdb.rst: Add some more heading structure 

We're about to add a new section to gdb.rst. In
preparation, add some more headings so it isn't just
one huge run-on section.

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Alex Bennée <alex.bennee@linaro.org>
Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Message-Id: <20210325175023.13838-2-peter.maydell@linaro.org>
Message-Id: <20210401102530.12030-9-alex.bennee@linaro.org>
This commit is contained in:
Peter Maydell 2021-04-01 11:25:27 +01:00 committed by Alex Bennée
parent 1cb8d12f79
commit acb0a27eb8
1 changed files with 7 additions and 1 deletions
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@ -45,7 +45,11 @@ Here are some useful tips in order to use gdb on system code:
3. Use ``set architecture i8086`` to dump 16 bit code. Then use
``x/10i $cs*16+$eip`` to dump the code at the PC position.
Advanced debugging options:
Advanced debugging options
==========================
Changing single-stepping behaviour
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
The default single stepping behavior is step with the IRQs and timer
service routines off. It is set this way because when gdb executes a
@ -88,6 +92,8 @@ three commands you can query and set the single step behavior:
sending: "qemu.sstep=0x5"
received: "OK"
Examining physical memory
^^^^^^^^^^^^^^^^^^^^^^^^^
Another feature that QEMU gdbstub provides is to toggle the memory GDB
works with, by default GDB will show the current process memory respecting