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gdbstub: Fix gdb_register_coprocessor() register counting
Commit a0e372f reorganized the register counting for GDB. While it seems correct not to let the total number of registers skyrocket in an SMP scenario through a static variable, the distinction between total register count and 'g' packet register count (last_reg vs. num_g_regs) got lost among the way. Fix this by introducing CPUState::gdb_num_g_regs and using that in gdb_handle_packet(). Reported-by: Aneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com> Cc: qemu-stable@nongnu.org (stable-1.6) Tested-by: Aneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com> Tested-by: Max Filippov <jcmvbkbc@gmail.com> Tested-by: Peter Maydell <peter.maydell@linaro.org> Signed-off-by: Andreas Färber <afaerber@suse.de>
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