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authorPeter Maydell <peter.maydell@linaro.org>2020-05-07 14:47:55 +0100
committerPeter Maydell <peter.maydell@linaro.org>2020-05-14 15:03:08 +0100
commitc888f7e0fdcc09c86004330ab5cad62bf98cc71c (patch)
tree13e517c10433aeed092c6977c7dea558e02d3573 /blockdev.c
parent035b448b84f3557206abc44d786c5d3db2638f7d (diff)
target/arm: Use correct GDB XML for M-profile cores
GDB's remote protocol requires M-profile cores to use the feature name 'org.gnu.gdb.arm.m-profile' instead of the 'org.gnu.gdb.arm.core' feature used for A- and R-profile cores. We weren't doing this, which meant GDB treated our M-profile cores like A-profile ones. This mostly doesn't matter, but for instance means that it doesn't correctly handle backtraces where an M-profile exception frame is involved. Ship a copy of GDB's arm-m-profile.xml and use it on the M-profile cores. The integer registers have the same offsets as the arm-core.xml, but register 25 is the M-profile XPSR rather than the A-profile CPSR, so we need to update arm_cpu_gdb_read_register() and arm_cpu_gdb_write_register() to handle XSPR reads and writes. Fixes: https://bugs.launchpad.net/qemu/+bug/1877136 Signed-off-by: Peter Maydell <peter.maydell@linaro.org> Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org> Message-id: 20200507134755.13997-1-peter.maydell@linaro.org
Diffstat (limited to 'blockdev.c')
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