| commit | 2ecb2027bc5033dfa92d00d708723053f9689564 | |
| author | Alex Bennée <alex.bennee@linaro.org> | |
| Thu, 17 Dec 2015 13:37:15 +0000 (17 13:37 +0000) | ||
| committer | Peter Maydell <peter.maydell@linaro.org> | |
| Thu, 17 Dec 2015 13:37:15 +0000 (17 13:37 +0000) | ||
| tree | b1a2cbd521d3646c6729572f125d2b8bbf89373f | treesnapshot (tar.gz zip) |
| parent | 29eb3d9a911b13e2a66413ba5cc6c69a0f4a4528 | commitdiff |
target-arm: kvm - implement software breakpoints
These don't involve messing around with debug registers, just setting
the breakpoint instruction in memory. GDB will not use this mechanism if
it can't access the memory to write the breakpoint.
All the kernel has to do is ensure the hypervisor traps the breakpoint
exceptions and returns to userspace.
Signed-off-by: Alex Bennée <alex.bennee@linaro.org>
Message-id: 1449599553-24713-3-git-send-email-alex.bennee@linaro.org
[PMM: Fixed typo in comment]
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
These don't involve messing around with debug registers, just setting
the breakpoint instruction in memory. GDB will not use this mechanism if
it can't access the memory to write the breakpoint.
All the kernel has to do is ensure the hypervisor traps the breakpoint
exceptions and returns to userspace.
Signed-off-by: Alex Bennée <alex.bennee@linaro.org>
Message-id: 1449599553-24713-3-git-send-email-alex.bennee@linaro.org
[PMM: Fixed typo in comment]
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
| target-arm/kvm.c | diffblobblamehistory | |
| target-arm/kvm32.c | diffblobblamehistory | |
| target-arm/kvm64.c | diffblobblamehistory | |
| target-arm/kvm_arm.h | diffblobblamehistory |