194 lines
6.9 KiB
C
194 lines
6.9 KiB
C
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/* Common things used by the various *gnu-nat.c files
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Copyright (C) 1995-2022 Free Software Foundation, Inc.
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Written by Miles Bader <miles@gnu.ai.mit.edu>
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 3 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program. If not, see <http://www.gnu.org/licenses/>. */
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#ifndef GNU_NAT_H
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#define GNU_NAT_H
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#include "defs.h"
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/* Work around conflict between Mach's 'thread_info' function, and GDB's
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'thread_info' class. Make the former available as 'mach_thread_info'. */
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#define thread_info mach_thread_info
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/* Mach headers are not yet ready for C++ compilation. */
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extern "C"
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{
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#include <mach.h>
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}
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#undef thread_info
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/* Divert 'mach_thread_info' to the original Mach 'thread_info' function. */
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extern __typeof__ (mach_thread_info) mach_thread_info asm ("thread_info");
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#include <unistd.h>
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#include "inf-child.h"
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struct inf;
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extern struct inf *gnu_current_inf;
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/* Converts a GDB pid to a struct proc. */
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struct proc *inf_tid_to_thread (struct inf *inf, int tid);
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typedef void (inf_threads_ftype) (struct proc *thread, void *arg);
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/* Call F for every thread in inferior INF, passing ARG as second parameter. */
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void inf_threads (struct inf *inf, inf_threads_ftype *f, void *arg);
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/* Makes sure that INF's thread list is synced with the actual process. */
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int inf_update_procs (struct inf *inf);
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/* A proc is either a thread, or the task (there can only be one task proc
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because it always has the same TID, PROC_TID_TASK). */
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struct proc
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{
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thread_t port; /* The task or thread port. */
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int tid; /* The GDB pid (actually a thread id). */
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int num; /* An id number for threads, to print. */
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mach_port_t saved_exc_port; /* The task/thread's real exception port. */
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mach_port_t exc_port; /* Our replacement, which for. */
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int sc; /* Desired suspend count. */
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int cur_sc; /* Implemented suspend count. */
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int run_sc; /* Default sc when the program is running. */
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int pause_sc; /* Default sc when gdb has control. */
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int resume_sc; /* Sc resulting from the last resume. */
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int detach_sc; /* SC to leave around when detaching
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from program. */
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thread_state_data_t state; /* Registers, &c. */
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int state_valid:1; /* True if STATE is up to date. */
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int state_changed:1;
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int aborted:1; /* True if thread_abort has been called. */
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int dead:1; /* We happen to know it's actually dead. */
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/* Bit mask of registers fetched by gdb. This is used when we re-fetch
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STATE after aborting the thread, to detect that gdb may have out-of-date
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information. */
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unsigned long fetched_regs;
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struct inf *inf; /* Where we come from. */
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struct proc *next;
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};
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/* The task has a thread entry with this TID. */
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#define PROC_TID_TASK (-1)
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#define proc_is_task(proc) ((proc)->tid == PROC_TID_TASK)
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#define proc_is_thread(proc) ((proc)->tid != PROC_TID_TASK)
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extern int __proc_pid (struct proc *proc);
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/* Return printable description of proc. */
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extern char *proc_string (struct proc *proc);
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#define proc_debug(_proc, msg, args...) \
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do { struct proc *__proc = (_proc); \
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debug ("{proc %d/%d %s}: " msg, \
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__proc_pid (__proc), __proc->tid, \
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host_address_to_string (__proc) , ##args); } while (0)
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extern bool gnu_debug_flag;
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#define debug(msg, args...) \
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do { if (gnu_debug_flag) \
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gdb_printf (gdb_stdlog, "%s:%d: " msg "\r\n", \
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__FILE__ , __LINE__ , ##args); } while (0)
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/* A prototype generic GNU/Hurd target. The client can override it
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with local methods. */
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struct gnu_nat_target : public inf_child_target
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{
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void attach (const char *, int) override;
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bool attach_no_wait () override
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{ return true; }
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void detach (inferior *, int) override;
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void resume (ptid_t, int, enum gdb_signal) override;
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ptid_t wait (ptid_t, struct target_waitstatus *, target_wait_flags) override;
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enum target_xfer_status xfer_partial (enum target_object object,
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const char *annex,
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gdb_byte *readbuf,
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const gdb_byte *writebuf,
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ULONGEST offset, ULONGEST len,
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ULONGEST *xfered_len) override;
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int find_memory_regions (find_memory_region_ftype func, void *data)
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override;
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void kill () override;
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void create_inferior (const char *, const std::string &,
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char **, int) override;
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void mourn_inferior () override;
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bool thread_alive (ptid_t ptid) override;
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std::string pid_to_str (ptid_t) override;
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void stop (ptid_t) override;
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void inf_validate_procs (struct inf *inf);
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void inf_suspend (struct inf *inf);
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void inf_set_traced (struct inf *inf, int on);
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void steal_exc_port (struct proc *proc, mach_port_t name);
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/* Make sure that the state field in PROC is up to date, and return a
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pointer to it, or 0 if something is wrong. If WILL_MODIFY is true,
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makes sure that the thread is stopped and aborted first, and sets
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the state_changed field in PROC to true. */
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thread_state_t proc_get_state (struct proc *proc, int will_modify);
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private:
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void inf_clear_wait (struct inf *inf);
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void inf_cleanup (struct inf *inf);
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void inf_startup (struct inf *inf, int pid);
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int inf_update_suspends (struct inf *inf);
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void inf_set_pid (struct inf *inf, pid_t pid);
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void inf_steal_exc_ports (struct inf *inf);
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void inf_validate_procinfo (struct inf *inf);
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void inf_validate_task_sc (struct inf *inf);
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void inf_restore_exc_ports (struct inf *inf);
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void inf_set_threads_resume_sc (struct inf *inf,
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struct proc *run_thread,
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int run_others);
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int inf_set_threads_resume_sc_for_signal_thread (struct inf *inf);
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void inf_resume (struct inf *inf);
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void inf_set_step_thread (struct inf *inf, struct proc *proc);
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void inf_detach (struct inf *inf);
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void inf_attach (struct inf *inf, int pid);
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void inf_signal (struct inf *inf, enum gdb_signal sig);
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void inf_continue (struct inf *inf);
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struct proc *make_proc (struct inf *inf, mach_port_t port, int tid);
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void proc_abort (struct proc *proc, int force);
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struct proc *_proc_free (struct proc *proc);
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int proc_update_sc (struct proc *proc);
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kern_return_t proc_get_exception_port (struct proc *proc, mach_port_t * port);
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kern_return_t proc_set_exception_port (struct proc *proc, mach_port_t port);
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mach_port_t _proc_get_exc_port (struct proc *proc);
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void proc_steal_exc_port (struct proc *proc, mach_port_t exc_port);
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void proc_restore_exc_port (struct proc *proc);
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int proc_trace (struct proc *proc, int set);
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};
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/* The final/concrete instance. */
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extern gnu_nat_target *gnu_target;
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#endif /* GNU_NAT_H */
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