diff options
| author | Sergey Fedorov <serge.fdrv@gmail.com> | 2016-02-11 11:17:32 +0000 |
|---|---|---|
| committer | Peter Maydell <peter.maydell@linaro.org> | 2016-02-11 11:17:32 +0000 |
| commit | 568496c0c0f1863a4bc18539962cd8d81baa4e30 (patch) | |
| tree | f2e5e6fc8b4cc961becd9338dd65e21a9893fbef /include | |
| parent | 7d197d2db5e99e4c8b20f6771ddc7303acaa1c89 (diff) | |
cpu: Add callback to check architectural watchpoint match
When QEMU watchpoint matches, that is not definitely an architectural
watchpoint match yet. If it is a stop-before-access watchpoint then that
is hardly possible to ignore it after throwing a TCG exception.
A special callback is introduced to check for architectural watchpoint
match before raising a TCG exception.
Signed-off-by: Sergey Fedorov <serge.fdrv@gmail.com>
Message-id: 1454256948-10485-2-git-send-email-serge.fdrv@gmail.com
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Diffstat (limited to 'include')
| -rw-r--r-- | include/qom/cpu.h | 8 |
1 files changed, 6 insertions, 2 deletions
diff --git a/include/qom/cpu.h b/include/qom/cpu.h index 035179c09c..ff54600e71 100644 --- a/include/qom/cpu.h +++ b/include/qom/cpu.h @@ -64,6 +64,7 @@ typedef uint64_t vaddr; #define CPU_GET_CLASS(obj) OBJECT_GET_CLASS(CPUClass, (obj), TYPE_CPU) typedef struct CPUState CPUState; +typedef struct CPUWatchpoint CPUWatchpoint; typedef void (*CPUUnassignedAccess)(CPUState *cpu, hwaddr addr, bool is_write, bool is_exec, int opaque, @@ -106,6 +107,8 @@ struct TranslationBlock; * a memory access with the specified memory transaction attributes. * @gdb_read_register: Callback for letting GDB read a register. * @gdb_write_register: Callback for letting GDB write a register. + * @debug_check_watchpoint: Callback: return true if the architectural + * watchpoint whose address has matched should really fire. * @debug_excp_handler: Callback for handling debug exceptions. * @write_elf64_note: Callback for writing a CPU-specific ELF note to a * 64-bit VM coredump. @@ -165,6 +168,7 @@ typedef struct CPUClass { int (*asidx_from_attrs)(CPUState *cpu, MemTxAttrs attrs); int (*gdb_read_register)(CPUState *cpu, uint8_t *buf, int reg); int (*gdb_write_register)(CPUState *cpu, uint8_t *buf, int reg); + bool (*debug_check_watchpoint)(CPUState *cpu, CPUWatchpoint *wp); void (*debug_excp_handler)(CPUState *cpu); int (*write_elf64_note)(WriteCoreDumpFunction f, CPUState *cpu, @@ -207,14 +211,14 @@ typedef struct CPUBreakpoint { QTAILQ_ENTRY(CPUBreakpoint) entry; } CPUBreakpoint; -typedef struct CPUWatchpoint { +struct CPUWatchpoint { vaddr vaddr; vaddr len; vaddr hitaddr; MemTxAttrs hitattrs; int flags; /* BP_* */ QTAILQ_ENTRY(CPUWatchpoint) entry; -} CPUWatchpoint; +}; struct KVMState; struct kvm_run; |