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authorSergey Fedorov <serge.fdrv@gmail.com>2016-02-11 11:17:32 +0000
committerPeter Maydell <peter.maydell@linaro.org>2016-02-11 11:17:32 +0000
commit568496c0c0f1863a4bc18539962cd8d81baa4e30 (patch)
treef2e5e6fc8b4cc961becd9338dd65e21a9893fbef /include/qom
parent7d197d2db5e99e4c8b20f6771ddc7303acaa1c89 (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/qom')
-rw-r--r--include/qom/cpu.h8
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;