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hvf: add guest debugging handlers for Apple Silicon hosts

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Guests can now be debugged through the gdbstub. Support is added for
single-stepping, software breakpoints, hardware breakpoints and
watchpoints. The code has been structured like the KVM counterpart.

While guest debugging is enabled, the guest can still read and write the
DBG*_EL1 registers but they don't have any effect.

Signed-off-by: Francesco Cagnin <fcagnin@quarkslab.com>
Message-id: 20230601153107.81955-5-fcagnin@quarkslab.com
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
This commit is contained in:
Francesco Cagnin 2023-06-06 10:19:30 +01:00 • committed by Peter Maydell
parent f41520402c
commit eb2edc42b1
7 changed files with 520 additions and 2 deletions
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9
target/i386/hvf/hvf.c
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@ -703,3 +703,12 @@ int hvf_arch_remove_hw_breakpoint(target_ulong addr, target_ulong len, int type)
void hvf_arch_remove_all_hw_breakpoints(void)
{
}
void hvf_arch_update_guest_debug(CPUState *cpu)
{
}
inline bool hvf_arch_supports_guest_debug(void)
{
return false;
}