gdb: add target_ops::supports_displaced_step

[deliverable/binutils-gdb.git] / gdb / darwin-nat.h

diff --git a/gdb/darwin-nat.h b/gdb/darwin-nat.h
index 89a7c06f6a1a89419aad90dccc87c89f1064138b..86bb338921220593e2461b8efb0f99f8089f42f2 100644 (file)
--- a/gdb/darwin-nat.h
+++ b/gdb/darwin-nat.h
@@ -1,5 +1,5 @@
 /* Common things used by the various darwin files
-   Copyright (C) 1995-2018 Free Software Foundation, Inc.
+   Copyright (C) 1995-2020 Free Software Foundation, Inc.
 
    This program is free software; you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
@@ -14,13 +14,66 @@
    You should have received a copy of the GNU General Public License
    along with this program.  If not, see <http://www.gnu.org/licenses/>.  */
 
-#ifndef __DARWIN_NAT_H__
-#define __DARWIN_NAT_H__
+#ifndef DARWIN_NAT_H
+#define DARWIN_NAT_H
 
 #include "inf-child.h"
 #include <mach/mach.h>
 #include "gdbthread.h"
 
+struct darwin_exception_msg
+{
+  mach_msg_header_t header;
+
+  /* Thread and task taking the exception.  */
+  mach_port_t thread_port;
+  mach_port_t task_port;
+
+  /* Type of the exception.  */
+  exception_type_t ex_type;
+
+  /* Machine dependent details.  */
+  mach_msg_type_number_t data_count;
+  integer_t ex_data[2];
+};
+
+enum darwin_msg_state
+{
+  /* The thread is running.  */
+  DARWIN_RUNNING,
+
+  /* The thread is stopped.  */
+  DARWIN_STOPPED,
+
+  /* The thread has sent a message and waits for a reply.  */
+  DARWIN_MESSAGE
+};
+
+struct darwin_thread_info : public private_thread_info
+{
+  /* The thread port from a GDB point of view.  */
+  thread_t gdb_port = 0;
+
+  /* The thread port from the inferior point of view.  Not to be used inside
+     gdb except for get_ada_task_ptid.  */
+  thread_t inf_port = 0;
+
+  /* Current message state.
+     If the kernel has sent a message it expects a reply and the inferior
+     can't be killed before.  */
+  enum darwin_msg_state msg_state = DARWIN_RUNNING;
+
+  /* True if this thread is single-stepped.  */
+  bool single_step = false;
+
+  /* True if a signal was manually sent to the thread.  */
+  bool signaled = false;
+
+  /* The last exception received.  */
+  struct darwin_exception_msg event {};
+};
+typedef struct darwin_thread_info darwin_thread_t;
+
 /* This needs to be overridden by the platform specific nat code.  */
 
 class darwin_nat_target : public inf_child_target
@@ -45,7 +98,7 @@ class darwin_nat_target : public inf_child_target
 
   bool thread_alive (ptid_t ptid) override;
 
-  const char *pid_to_str (ptid_t) override;
+  std::string pid_to_str (ptid_t) override;
 
   char *pid_to_exec_file (int pid) override;
 
@@ -59,6 +112,21 @@ class darwin_nat_target : public inf_child_target
   bool supports_multi_process () override;
 
   ptid_t get_ada_task_ptid (long lwp, long thread) override;
+
+private:
+  ptid_t wait_1 (ptid_t, struct target_waitstatus *);
+  void check_new_threads (inferior *inf);
+  int decode_exception_message (mach_msg_header_t *hdr,
+                               inferior **pinf,
+                               darwin_thread_t **pthread);
+  ptid_t decode_message (mach_msg_header_t *hdr,
+                        darwin_thread_t **pthread,
+                        inferior **pinf,
+                        target_waitstatus *status);
+  void stop_inferior (inferior *inf);
+  void init_thread_list (inferior *inf);
+  void ptrace_him (int pid);
+  int cancel_breakpoint (ptid_t ptid);
 };
 
 /* Describe the mach exception handling state for a task.  This state is saved
@@ -83,59 +151,6 @@ struct darwin_exception_info
   mach_msg_type_number_t count = 0;
 };
 
-struct darwin_exception_msg
-{
-  mach_msg_header_t header;
-
-  /* Thread and task taking the exception.  */
-  mach_port_t thread_port;
-  mach_port_t task_port;
-
-  /* Type of the exception.  */
-  exception_type_t ex_type;
-
-  /* Machine dependent details.  */
-  mach_msg_type_number_t data_count;
-  integer_t ex_data[2];
-};
-
-enum darwin_msg_state
-{
-  /* The thread is running.  */
-  DARWIN_RUNNING,
-
-  /* The thread is stopped.  */
-  DARWIN_STOPPED,
-
-  /* The thread has sent a message and waits for a reply.  */
-  DARWIN_MESSAGE
-};
-
-struct darwin_thread_info : public private_thread_info
-{
-  /* The thread port from a GDB point of view.  */
-  thread_t gdb_port = 0;
-
-  /* The thread port from the inferior point of view.  Not to be used inside
-     gdb except for get_ada_task_ptid.  */
-  thread_t inf_port = 0;
-
-  /* Current message state.
-     If the kernel has sent a message it expects a reply and the inferior
-     can't be killed before.  */
-  enum darwin_msg_state msg_state = DARWIN_RUNNING;
-
-  /* True if this thread is single-stepped.  */
-  bool single_step = false;
-
-  /* True if a signal was manually sent to the thread.  */
-  bool signaled = false;
-
-  /* The last exception received.  */
-  struct darwin_exception_msg event {};
-};
-typedef struct darwin_thread_info darwin_thread_t;
-
 static inline darwin_thread_info *
 get_darwin_thread_info (class thread_info *thread)
 {
@@ -201,4 +216,4 @@ void darwin_set_sstep (thread_t thread, int enable);
 
 void darwin_check_osabi (darwin_inferior *inf, thread_t thread);
 
-#endif /* __DARWIN_NAT_H__ */
+#endif /* DARWIN_NAT_H */