/* Common things used by the various darwin files
- Copyright (C) 1995, 1996, 1997, 1999, 2000, 2007, 2008, 2009
- 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
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
- along with this program. If not, see <http://www.gnu.org/licenses/>.
-*/
+ 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 "gdb_assert.h"
+#include "gdbthread.h"
-/* Define the threads vector type. */
-DEF_VEC_I (thread_t);
+/* This needs to be overridden by the platform specific nat code. */
+
+class darwin_nat_target : public inf_child_target
+{
+ void create_inferior (const char *exec_file,
+ const std::string &allargs,
+ char **env, int from_tty) override;
+
+ void attach (const char *, int) override;
+
+ void detach (inferior *, int) override;
+
+ ptid_t wait (ptid_t, struct target_waitstatus *, int) override;
+
+ void mourn_inferior () override;
+
+ void kill () override;
+
+ void interrupt () override;
+
+ void resume (ptid_t, int , enum gdb_signal) override;
+
+ bool thread_alive (ptid_t ptid) override;
+
+ std::string pid_to_str (ptid_t) override;
+
+ char *pid_to_exec_file (int pid) override;
+
+ enum target_xfer_status xfer_partial (enum target_object object,
+ const char *annex,
+ gdb_byte *readbuf,
+ const gdb_byte *writebuf,
+ ULONGEST offset, ULONGEST len,
+ ULONGEST *xfered_len) override;
+
+ bool supports_multi_process () override;
+
+ ptid_t get_ada_task_ptid (long lwp, long thread) override;
+};
/* Describe the mach exception handling state for a task. This state is saved
before being changed and restored when a process is detached.
struct darwin_exception_info
{
/* Exceptions handled by the port. */
- exception_mask_t masks[EXC_TYPES_COUNT];
+ exception_mask_t masks[EXC_TYPES_COUNT] {};
/* Ports receiving exception messages. */
- mach_port_t ports[EXC_TYPES_COUNT];
+ mach_port_t ports[EXC_TYPES_COUNT] {};
/* Type of messages sent. */
- exception_behavior_t behaviors[EXC_TYPES_COUNT];
+ exception_behavior_t behaviors[EXC_TYPES_COUNT] {};
/* Type of state to be sent. */
- thread_state_flavor_t flavors[EXC_TYPES_COUNT];
+ thread_state_flavor_t flavors[EXC_TYPES_COUNT] {};
/* Number of elements set. */
- mach_msg_type_number_t count;
+ mach_msg_type_number_t count = 0;
};
-typedef struct darwin_exception_info darwin_exception_info;
-/* Describe an inferior. */
-struct darwin_inferior
+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
{
- /* Inferior PID. */
- int pid;
+ /* 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)
+{
+ return static_cast<darwin_thread_info *> (thread->priv.get ());
+}
+
+/* Describe an inferior. */
+struct darwin_inferior : public private_inferior
+{
/* Corresponding task port. */
- task_t task;
+ task_t task = 0;
- /* Previous port for request notification on task. */
- mach_port_t prev_not_port;
+ /* Port which will receive the dead-name notification for the task port.
+ This is used to detect the death of the task. */
+ mach_port_t notify_port = 0;
/* Initial exception handling. */
darwin_exception_info exception_info;
+ /* Number of messages that have been received but not yet replied. */
+ unsigned int pending_messages = 0;
+
+ /* Set if inferior is not controlled by ptrace(2) but through Mach. */
+ bool no_ptrace = false;
+
+ /* True if this task is suspended. */
+ bool suspended = false;
+
/* Sorted vector of known threads. */
- VEC(thread_t) *threads;
+ std::vector<darwin_thread_t *> threads;
};
-typedef struct darwin_inferior darwin_inferior;
-/* Current inferior. */
-extern darwin_inferior *darwin_inf;
+/* Return the darwin_inferior attached to INF. */
+
+static inline darwin_inferior *
+get_darwin_inferior (inferior *inf)
+{
+ return static_cast<darwin_inferior *> (inf->priv.get ());
+}
/* Exception port. */
extern mach_port_t darwin_ex_port;
-/* Notification port. */
-extern mach_port_t darwin_not_port;
-
/* Port set. */
extern mach_port_t darwin_port_set;
/* A copy of mach_host_self (). */
extern mach_port_t darwin_host_self;
-/* ASSERT_FUNCTION is defined in gdb_assert.h (or not). */
-#ifdef ASSERT_FUNCTION
+/* FUNCTION_NAME is defined in common-utils.h (or not). */
+#ifdef FUNCTION_NAME
#define MACH_CHECK_ERROR(ret) \
- mach_check_error (ret, __FILE__, __LINE__, ASSERT_FUNCTION)
+ mach_check_error (ret, __FILE__, __LINE__, FUNCTION_NAME)
#else
#define MACH_CHECK_ERROR(ret) \
mach_check_error (ret, __FILE__, __LINE__, "??")
void darwin_set_sstep (thread_t thread, int enable);
-/* This one is called in darwin-nat.c, but needs to be provided by the
- platform specific nat code. It allows each platform to add platform specific
- stuff to the darwin_ops. */
-extern void darwin_complete_target (struct target_ops *target);
-
void darwin_check_osabi (darwin_inferior *inf, thread_t thread);
-#endif /* __DARWIN_NAT_H__ */
+#endif /* DARWIN_NAT_H */
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