Philippe Mathieu-Daudé b3e88abb20 gdbstub: Consider GDBFeature::base_reg in gdb_register_coprocessor() ...

When a feature XML file provides a "regnum=" tag to indicate
the registers base index, respect it, as it might not be the
same as our current number of registered entries, in particular
when there are gaps.

This fixes a bug with the "power-fpu.xml" file [*] which was
loaded at index 70 while the base register is 71. This latent
bug was exposed by commit 1ec0fbe2dd ("target/ppc: Fix
CPUClass::gdb_num_core_regs value").

[*] https://lore.kernel.org/qemu-devel/e44df309-d40d-46f0-88a8-7ac55f9a3634@fhofhammer.de/

Reported-by: Florian Hofhammer <florian.hofhammer@fhofhammer.de>
Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Reviewed-by: Pierrick Bouvier <pierrick.bouvier@linaro.org>
Tested-by: Pierrick Bouvier <pierrick.bouvier@linaro.org>
Link: https://lore.kernel.org/qemu-devel/20260310232045.58440-13-philmd@linaro.org
Signed-off-by: Pierrick Bouvier <pierrick.bouvier@linaro.org>

2026-03-10 17:12:18 -07:00

2.5 KiB

Raw Permalink Blame History

View Raw