diff options
| author | Jon Doron <arilou@gmail.com> | 2020-07-09 15:13:17 +0100 |
|---|---|---|
| committer | Alex Bennée <alex.bennee@linaro.org> | 2020-07-11 15:53:00 +0100 |
| commit | 506794677594120ff02a0ad3bfbdcb7b0acca608 (patch) | |
| tree | 0f1d00f6f5867628b857583d0f63d21272b032a3 /docs | |
| parent | 4d7fe02be39e855cdd11376b4d17a85e343fd5c9 (diff) | |
docs: Add to gdbstub documentation the PhyMemMode
The PhyMemMode gdb extension command was missing from the gdb.rst
document.
Signed-off-by: Jon Doron <arilou@gmail.com>
Signed-off-by: Alex Bennée <alex.bennee@linaro.org>
Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Message-Id: <20200601171609.1665397-1-arilou@gmail.com>
Message-Id: <20200709141327.14631-4-alex.bennee@linaro.org>
Diffstat (limited to 'docs')
| -rw-r--r-- | docs/system/gdb.rst | 20 |
1 files changed, 20 insertions, 0 deletions
diff --git a/docs/system/gdb.rst b/docs/system/gdb.rst index a40145fcf8..abda961e2b 100644 --- a/docs/system/gdb.rst +++ b/docs/system/gdb.rst @@ -87,3 +87,23 @@ three commands you can query and set the single step behavior: (gdb) maintenance packet Qqemu.sstep=0x5 sending: "qemu.sstep=0x5" received: "OK" + + +Another feature that QEMU gdbstub provides is to toggle the memory GDB +works with, by default GDB will show the current process memory respecting +the virtual address translation. + +If you want to examine/change the physical memory you can set the gdbstub +to work with the physical memory rather with the virtual one. + +The memory mode can be checked by sending the following command: + +``maintenance packet qqemu.PhyMemMode`` + This will return either 0 or 1, 1 indicates you are currently in the + physical memory mode. + +``maintenance packet Qqemu.PhyMemMode:1`` + This will change the memory mode to physical memory. + +``maintenance packet Qqemu.PhyMemMode:0`` + This will change it back to normal memory mode. |