1 files changed, 54 insertions, 0 deletions
diff --git a/include/user/cpu_loop.h b/include/user/cpu_loop.h
index b0d4704018..589c66543f 100644
--- a/include/user/cpu_loop.h
+++ b/include/user/cpu_loop.h
@@ -20,9 +20,63 @@
 #ifndef USER_CPU_LOOP_H
 #define USER_CPU_LOOP_H
 
+#include "exec/abi_ptr.h"
+#include "exec/mmu-access-type.h"
 #include "exec/log.h"
+#include "exec/target_long.h"
 #include "special-errno.h"
 
+/**
+ * adjust_signal_pc:
+ * @pc: raw pc from the host signal ucontext_t.
+ * @is_write: host memory operation was write, or read-modify-write.
+ *
+ * Alter @pc as required for unwinding.  Return the type of the
+ * guest memory access -- host reads may be for guest execution.
+ */
+MMUAccessType adjust_signal_pc(uintptr_t *pc, bool is_write);
+
+/**
+ * handle_sigsegv_accerr_write:
+ * @cpu: the cpu context
+ * @old_set: the sigset_t from the signal ucontext_t
+ * @host_pc: the host pc, adjusted for the signal
+ * @host_addr: the host address of the fault
+ *
+ * Return true if the write fault has been handled, and should be re-tried.
+ */
+bool handle_sigsegv_accerr_write(CPUState *cpu, sigset_t *old_set,
+                                 uintptr_t host_pc, abi_ptr guest_addr);
+
+/**
+ * cpu_loop_exit_sigsegv:
+ * @cpu: the cpu context
+ * @addr: the guest address of the fault
+ * @access_type: access was read/write/execute
+ * @maperr: true for invalid page, false for permission fault
+ * @ra: host pc for unwinding
+ *
+ * Use the TCGCPUOps hook to record cpu state, do guest operating system
+ * specific things to raise SIGSEGV, and jump to the main cpu loop.
+ */
+G_NORETURN void cpu_loop_exit_sigsegv(CPUState *cpu, target_ulong addr,
+                                      MMUAccessType access_type,
+                                      bool maperr, uintptr_t ra);
+
+/**
+ * cpu_loop_exit_sigbus:
+ * @cpu: the cpu context
+ * @addr: the guest address of the alignment fault
+ * @access_type: access was read/write/execute
+ * @ra: host pc for unwinding
+ *
+ * Use the TCGCPUOps hook to record cpu state, do guest operating system
+ * specific things to raise SIGBUS, and jump to the main cpu loop.
+ */
+G_NORETURN void cpu_loop_exit_sigbus(CPUState *cpu, target_ulong addr,
+                                     MMUAccessType access_type,
+                                     uintptr_t ra);
+
 G_NORETURN void cpu_loop(CPUArchState *env);
 
 void target_exception_dump(CPUArchState *env, const char *fmt, int code);