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| author | Alex Bennée <alex.bennee@linaro.org> | 2015-12-17 13:37:15 +0000 |
|---|---|---|
| committer | Peter Maydell <peter.maydell@linaro.org> | 2015-12-17 13:37:15 +0000 |
| commit | 2ecb2027bc5033dfa92d00d708723053f9689564 (patch) | |
| tree | b1a2cbd521d3646c6729572f125d2b8bbf89373f /target-arm/kvm32.c | |
| parent | 29eb3d9a911b13e2a66413ba5cc6c69a0f4a4528 (diff) | |
| download | qemu-2ecb2027bc5033dfa92d00d708723053f9689564.zip qemu-2ecb2027bc5033dfa92d00d708723053f9689564.tar.gz qemu-2ecb2027bc5033dfa92d00d708723053f9689564.tar.bz2 | |
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>
Diffstat (limited to 'target-arm/kvm32.c')
| -rw-r--r-- | target-arm/kvm32.c | 18 |
1 files changed, 18 insertions, 0 deletions
diff --git a/target-arm/kvm32.c b/target-arm/kvm32.c index df1e2b0..5ce969f 100644 --- a/target-arm/kvm32.c +++ b/target-arm/kvm32.c @@ -475,3 +475,21 @@ int kvm_arch_get_registers(CPUState *cs) return 0; } + +int kvm_arch_insert_sw_breakpoint(CPUState *cs, struct kvm_sw_breakpoint *bp) +{ + qemu_log_mask(LOG_UNIMP, "%s: guest debug not yet implemented\n", __func__); + return -EINVAL; +} + +int kvm_arch_remove_sw_breakpoint(CPUState *cs, struct kvm_sw_breakpoint *bp) +{ + qemu_log_mask(LOG_UNIMP, "%s: guest debug not yet implemented\n", __func__); + return -EINVAL; +} + +bool kvm_arm_handle_debug(CPUState *cs, struct kvm_debug_exit_arch *debug_exit) +{ + qemu_log_mask(LOG_UNIMP, "%s: guest debug not yet implemented\n", __func__); + return false; +} |