2002-06-11 Daniel Jacobowitz <drow@mvista.com>

	* gdbserver/thread-db.c: New file.
	* gdbserver/proc-service.c: New file.
	* gdbserver/acinclude.m4: New file.
	* gdbserver/Makefile.in: Add GDBSERVER_LIBS, gdb_proc_service_h,
	proc-service.o, and thread-db.o.
	(linux-low.o): Add USE_THREAD_DB.
	* gdbserver/acconfig.h: Add HAVE_PRGREGSET_T, HAVE_PRFPREGSET_T,
	HAVE_LWPID_T, HAVE_PSADDR_T, and PRFPREGSET_T_BROKEN.
	* gdbserver/aclocal.m4: Regenerated.
	* gdbserver/config.in: Regenerated.
	* gdbserver/configure: Regenerated.
	* gdbserver/configure.in: Check for proc_service.h, sys/procfs.h,
	thread_db.h, and linux/elf.h headrs.
	Check for lwpid_t, psaddr_t, prgregset_t, prfpregset_t, and
	PRFPREGSET_T_BROKEN.  Introduce srv_thread_depfiles and USE_THREAD_DB.
	Check for -lthread_db and thread support.
	* gdbserver/configure.srv: Enable thread_db support for ARM, i386, MIPS,
	PowerPC, and SuperH.
	* gdbserver/i387-fp.c: Constify arguments.
	* gdbserver/i387-fp.h: Likewise.
	* gdbserver/inferiors.c: (struct thread_info): Renamed from
	`struct inferior_info'.  Remove PID member.  Use generic inferior
	list header.  All uses updated.
	(inferiors, signal_pid): Removed.
	(all_threads): New variable.
	(get_thread): Define.
	(add_inferior_to_list): New function.
	(for_each_inferior): New function.
	(change_inferior_id): New function.
	(add_inferior): Removed.
	(remove_inferior): New function.
	(add_thread): New function.
	(free_one_thread): New function.
	(remove_thread): New function.
	(clear_inferiors): Use for_each_inferior and free_one_thread.
	(find_inferior): New function.
	(find_inferior_id): New function.
	(inferior_target_data): Update argument type.
	(set_inferior_target_data): Likewise.
	(inferior_regcache_data): Likewise.
	(set_inferior_regcache_data): Likewise.
	* gdbserver/linux-low.c (linux_bp_reinsert): Remove.
	(all_processes, stopping_threads, using_thrads)
	(struct pending_signals, debug_threads, pid_of): New.
	(inferior_pid): Replace with macro.
	(struct inferior_linux_data): Remove.
	(get_stop_pc, add_process): New functions.
	(linux_create_inferior): Restore SIGRTMIN+1 before calling exec.
	Use add_process and add_thread.
	(linux_attach_lwp): New function, based on old linux_attach.  Use
	add_process and add_thread.  Set stop_expected for new threads.
	(linux_attach): New function.
	(linux_kill_one_process): New function.
	(linux_kill): Kill all LWPs.
	(linux_thread_alive): Use find_inferior_id.
	(check_removed_breakpoints, status_pending_p): New functions.
	(linux_wait_for_process): Renamed from linux_wait_for_one_inferior.
	Update.  Use WNOHANG.  Wait for cloned processes also.  Update process
	struct for the found process.
	(linux_wait_for_event): New function.
	(linux_wait): Use it.  Support LWPs.
	(send_sigstop, wait_for_sigstop, stop_all_processes)
	(linux_resume_one_process, linux_continue_one_process): New functions.
	(linux_resume): Support LWPs.
	(REGISTER_RAW_SIZE): Remove.
	(fetch_register): Use register_size instead.  Call supply_register.
	(usr_store_inferior_registers): Likewise.  Call collect_register.
	Fix recursive case.
	(regsets_fetch_inferior_registers): Improve error message.
	(regsets_store_inferior_registers): Add debugging.
	(linux_look_up_symbols): Call thread_db_init if USE_THREAD_DB.
	(unstopped_p, linux_signal_pid): New functions.
	(linux_target_ops): Add linux_signal_pid.
	(linux_init_signals): New function.
	(initialize_low): Call it.  Initialize using_threads.
	* gdbserver/regcache.c (inferior_regcache_data): Add valid
	flag.
	(get_regcache): Fetch registers lazily.  Add fetch argument
	and update all callers.
	(regcache_invalidate_one, regcache_invalidate): New
	functions.
	(new_register_cache): Renamed from create_register_cache.
	Return the new regcache.
	(free_register_cache): Change argument to a void *.
	(registers_to_string, registers_from_string): Call get_regcache
	with fetch flag set.
	(register_data): Make static.  Pass fetch flag to get_regcache.
	(supply_register): Call get_regcache with fetch flag clear.
	(collect_register): Call get_regcache with fetch flag set.
	(collect_register_as_string): New function.
	* gdbserver/regcache.h: Update.
	* gdbserver/remote-utils.c (putpkt): Flush after debug output and use
	stderr.
	Handle input interrupts while waiting for an ACK.
	(input_interrupt): Use signal_pid method.
	(getpkt): Flush after debug output and use stderr.
	(outreg): Use collect_register_as_string.
	(new_thread_notify, dead_thread_notify): New functions.
	(prepare_resume_reply): Check using_threads.  Set thread_from_wait
	and general_thread.
	(look_up_one_symbol): Flush after debug output.
	* gdbserver/server.c (step_thread, server_waiting): New variables.
	(start_inferior): Don't use signal_pid.  Update call to mywait.
	(attach_inferior): Update call to mywait.
	(handle_query): Handle qfThreadInfo and qsThreadInfo.
	(main): Don't fetch/store registers explicitly.  Use
	set_desired_inferior.  Support proposed ``Hs'' packet.  Update
	calls to mywait.
	* gdbserver/server.h: Update.
	(struct inferior_list, struct_inferior_list_entry): New.
	* gdbserver/target.c (set_desired_inferior): New.
	(write_inferior_memory): Constify.
	(mywait): New function.
	* gdbserver/target.h: Update.
	(struct target_ops): New signal_pid method.
	(mywait): Removed macro, added prototype.

	* gdbserver/linux-low.h (regset_func): Removed.
	(regset_fill_func, regset_store_func): New.
	(enum regset_type): New.
	(struct regset_info): Add type field.  Use new operation types.
	(struct linux_target_ops): stop_pc renamed to get_pc.
	Add decr_pc_after_break and breakpoint_at.
	(get_process, get_thread_proess, get_process_thread)
	(strut process_info, all_processes, linux_attach_lwp)
	(thread_db_init): New.

	* gdbserver/linux-arm-low.c (arm_get_pc, arm_set_pc,
	arm_breakpoint, arm_breakpoint_len, arm_breakpoint_at): New.
	(the_low_target): Add new members.
	* gdbserver/linux-i386-low.c (i386_store_gregset, i386_store_fpregset)
	(i386_store_fpxregset): Constify.
	(target_regsets): Add new kind identifier.
	(i386_get_pc): Renamed from i386_stop_pc.  Simplify.
	(i386_set_pc): Add debugging.
	(i386_breakpoint_at): New function.
	(the_low_target): Add new members.
	* gdbserver/linux-mips-low.c (mips_get_pc, mips_set_pc)
	(mips_breakpoint, mips_breakpoint_len, mips_reinsert_addr)
	(mips_breakpoint_at): New.
	(the_low_target): Add new members.
	* gdbserver/linux-ppc-low.c (ppc_get_pc, ppc_set_pc)
	(ppc_breakpoint, ppc_breakpoint_len, ppc_breakpoint_at): New.
	(the_low_target): Add new members.
	* gdbserver/linux-sh-low.c (sh_get_pc, sh_set_pc)
	(sh_breakpoint, sh_breakpoint_len, sh_breakpoint_at): New.
	(the_low_target): Add new members.
	* gdbserver/linux-x86-64-low.c (target_regsets): Add new kind
	identifier.

1 files changed, 68 insertions, 3 deletions

diff --git a/gdb/gdbserver/linux-low.h b/gdb/gdbserver/linux-low.h
index b484982..bae76b7 100644
--- a/gdb/gdbserver/linux-low.h
+++ b/gdb/gdbserver/linux-low.h
@@ -19,12 +19,21 @@
    Boston, MA 02111-1307, USA.  */
 
 #ifdef HAVE_LINUX_REGSETS
-typedef void (*regset_func) (void *);
+typedef void (*regset_fill_func) (void *);
+typedef void (*regset_store_func) (const void *);
+enum regset_type {
+  GENERAL_REGS,
+  FP_REGS,
+  EXTENDED_REGS,
+};
+
 struct regset_info
 {
   int get_request, set_request;
   int size;
-  regset_func fill_function, store_function;
+  enum regset_type type;
+  regset_fill_func fill_function;
+  regset_store_func store_function;
 };
 extern struct regset_info target_regsets[];
 #endif
@@ -39,11 +48,67 @@ struct linux_target_ops
      store the register, and 2 if failure to store the register
      is acceptable.  */
   int (*cannot_store_register) (int);
-  CORE_ADDR (*stop_pc) (void);
+  CORE_ADDR (*get_pc) (void);
   void (*set_pc) (CORE_ADDR newpc);
   const char *breakpoint;
   int breakpoint_len;
   CORE_ADDR (*breakpoint_reinsert_addr) (void);
+
+
+  int decr_pc_after_break;
+  int (*breakpoint_at) (CORE_ADDR pc);
 };
 
 extern struct linux_target_ops the_low_target;
+
+#define get_process(inf) ((struct process_info *)(inf))
+#define get_thread_process(thr) (get_process (inferior_target_data (thr)))
+#define get_process_thread(proc) ((struct thread_info *) \
+				  find_inferior_id (&all_threads, \
+				  get_process (proc)->tid))
+
+struct process_info
+{
+  struct inferior_list_entry head;
+  int thread_known;
+  int lwpid;
+  int tid;
+
+  /* If this flag is set, the next SIGSTOP will be ignored (the process will
+     be immediately resumed).  */
+  int stop_expected;
+
+  /* If this flag is set, the process is known to be stopped right now (stop
+     event already received in a wait()).  */
+  int stopped;
+
+  /* If this flag is set, we have sent a SIGSTOP to this process and are
+     waiting for it to stop.  */
+  int sigstop_sent;
+
+  /* If this flag is set, STATUS_PENDING is a waitstatus that has not yet
+     been reported.  */
+  int status_pending_p;
+  int status_pending;
+
+  /* If this flag is set, the pending status is a (GDB-placed) breakpoint.  */
+  int pending_is_breakpoint;
+  CORE_ADDR pending_stop_pc;
+
+  /* If this is non-zero, it is a breakpoint to be reinserted at our next
+     stop (SIGTRAP stops only).  */
+  CORE_ADDR bp_reinsert;
+
+  /* If this flag is set, the last continue operation on this process
+     was a single-step.  */
+  int stepping;
+
+  /* If this is non-zero, it points to a chain of signals which need to
+     be delivered to this process.  */
+  struct pending_signals *pending_signals;
+};
+extern struct inferior_list all_processes;
+
+void linux_attach_lwp (int pid, int tid);
+
+int thread_db_init (void);