motorhead/qemu
1
0
Fork 0
mirror of https://github.com/Motorhead1991/qemu.git synced 2025-08-07 01:33:56 -06:00
Code Issues Projects Releases Packages Wiki Activity Actions

cpu: Add callback to check architectural watchpoint match

Browse source 
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>
This commit is contained in:
Sergey Fedorov 2016-02-11 11:17:32 +00:00 • committed by Peter Maydell
parent 7d197d2db5
commit 568496c0c0
3 changed files with 21 additions and 2 deletions
Download patch file Download diff file Expand all files Collapse all files

8
include/qom/cpu.h
View file

@ -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;