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, 256 insertions, 0 deletions

diff --git a/gdb/gdbserver/proc-service.c b/gdb/gdbserver/proc-service.c
new file mode 100644
index 0000000..becf565
--- /dev/null
+++ b/gdb/gdbserver/proc-service.c
@@ -0,0 +1,256 @@
+/* libthread_db helper functions for the remote server for GDB.
+   Copyright 2002
+   Free Software Foundation, Inc.
+
+   Contributed by MontaVista Software.
+
+   This file is part of GDB.
+
+   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
+   the Free Software Foundation; either version 2 of the License, or
+   (at your option) any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   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, write to the Free Software
+   Foundation, Inc., 59 Temple Place - Suite 330,
+   Boston, MA 02111-1307, USA.  */
+
+#include "server.h"
+
+/* This file is currently tied to GNU/Linux.  It should scale well to
+   another libthread_db implementation, with the approriate gdbserver
+   hooks, but for now this means we can use GNU/Linux's target data.  */
+
+#include "linux-low.h"
+
+/* Correct for all GNU/Linux targets (for quite some time).  */
+#define GDB_GREGSET_T elf_gregset_t
+#define GDB_FPREGSET_T elf_fpregset_t
+
+#ifndef HAVE_ELF_FPREGSET_T
+/* Make sure we have said types.  Not all platforms bring in <linux/elf.h>
+   via <sys/procfs.h>.  */
+#ifdef HAVE_LINUX_ELF_H   
+#include <linux/elf.h>    
+#endif
+#endif
+
+#include "../gdb_proc_service.h"
+
+typedef struct ps_prochandle *gdb_ps_prochandle_t;
+typedef void *gdb_ps_read_buf_t;
+typedef const void *gdb_ps_write_buf_t;
+typedef size_t gdb_ps_size_t;
+
+/* FIXME redo this right */
+#if 0
+#ifndef HAVE_LINUX_REGSETS
+#error HAVE_LINUX_REGSETS required!
+#else
+static struct regset_info *
+gregset_info(void)
+{
+  int i = 0;
+
+  while (target_regsets[i].size != -1)
+    {
+      if (target_regsets[i].type == GENERAL_REGS)
+	break;
+      i++;
+    }
+
+  return &target_regsets[i];
+}
+
+static struct regset_info *
+fpregset_info(void)
+{
+  int i = 0;
+
+  while (target_regsets[i].size != -1)
+    {
+      if (target_regsets[i].type == FP_REGS)
+	break;
+      i++;
+    }
+
+  return &target_regsets[i];
+}
+#endif
+#endif
+
+/* Search for the symbol named NAME within the object named OBJ within
+   the target process PH.  If the symbol is found the address of the
+   symbol is stored in SYM_ADDR.  */
+
+ps_err_e
+ps_pglobal_lookup (gdb_ps_prochandle_t ph, const char *obj,
+		   const char *name, paddr_t *sym_addr)
+{
+  CORE_ADDR addr;
+
+  if (look_up_one_symbol (name, &addr) == 0)
+    return PS_NOSYM;
+
+  *sym_addr = (paddr_t) (unsigned long) addr;
+  return PS_OK;
+}
+
+/* Read SIZE bytes from the target process PH at address ADDR and copy
+   them into BUF.  */
+
+ps_err_e
+ps_pdread (gdb_ps_prochandle_t ph, paddr_t addr,
+	   gdb_ps_read_buf_t buf, gdb_ps_size_t size)
+{
+  read_inferior_memory (addr, buf, size);
+  return PS_OK;
+}
+
+/* Write SIZE bytes from BUF into the target process PH at address ADDR.  */
+
+ps_err_e
+ps_pdwrite (gdb_ps_prochandle_t ph, paddr_t addr,
+	    gdb_ps_write_buf_t buf, gdb_ps_size_t size)
+{
+  return write_inferior_memory (addr, buf, size);
+}
+
+/* Get the general registers of LWP LWPID within the target process PH
+   and store them in GREGSET.  */
+
+ps_err_e
+ps_lgetregs (gdb_ps_prochandle_t ph, lwpid_t lwpid, prgregset_t gregset)
+{
+#if 0
+  struct thread_info *reg_inferior, *save_inferior;
+  void *regcache;
+
+  reg_inferior = (struct thread_info *) find_inferior_id (&all_threads,
+							  lwpid);
+  if (reg_inferior == NULL)
+    return PS_ERR;
+
+  save_inferior = current_inferior;
+  current_inferior = reg_inferior;
+
+  regcache = new_register_cache ();
+  the_target->fetch_registers (0, regcache);
+  gregset_info()->fill_function (gregset, regcache);
+  free_register_cache (regcache);
+
+  current_inferior = save_inferior;
+  return PS_OK;
+#endif
+  /* FIXME */
+  return PS_ERR;
+}
+
+/* Set the general registers of LWP LWPID within the target process PH
+   from GREGSET.  */
+
+ps_err_e
+ps_lsetregs (gdb_ps_prochandle_t ph, lwpid_t lwpid, const prgregset_t gregset)
+{
+#if 0
+  struct thread_info *reg_inferior, *save_inferior;
+  void *regcache;
+
+  reg_inferior = (struct thread_info *) find_inferior_id (&all_threads, lwpid);
+  if (reg_inferior == NULL)
+    return PS_ERR;
+
+  save_inferior = current_inferior;
+  current_inferior = reg_inferior;
+
+  regcache = new_register_cache ();
+  gregset_info()->store_function (gregset, regcache);
+  the_target->store_registers (0, regcache);
+  free_register_cache (regcache);
+
+  current_inferior = save_inferior;
+
+  return PS_OK;
+#endif
+  /* FIXME */
+  return PS_ERR;
+}
+
+/* Get the floating-point registers of LWP LWPID within the target
+   process PH and store them in FPREGSET.  */
+
+ps_err_e
+ps_lgetfpregs (gdb_ps_prochandle_t ph, lwpid_t lwpid,
+	       gdb_prfpregset_t *fpregset)
+{
+#if 0
+  struct thread_info *reg_inferior, *save_inferior;
+  void *regcache;
+
+  reg_inferior = (struct thread_info *) find_inferior_id (&all_threads, lwpid);
+  if (reg_inferior == NULL)
+    return PS_ERR;
+
+  save_inferior = current_inferior;
+  current_inferior = reg_inferior;
+
+  regcache = new_register_cache ();
+  the_target->fetch_registers (0, regcache);
+  fpregset_info()->fill_function (fpregset, regcache);
+  free_register_cache (regcache);
+
+  current_inferior = save_inferior;
+
+  return PS_OK;
+#endif
+  /* FIXME */
+  return PS_ERR;
+}
+
+/* Set the floating-point registers of LWP LWPID within the target
+   process PH from FPREGSET.  */
+
+ps_err_e
+ps_lsetfpregs (gdb_ps_prochandle_t ph, lwpid_t lwpid,
+	       const gdb_prfpregset_t *fpregset)
+{
+#if 0
+  struct thread_info *reg_inferior, *save_inferior;
+  void *regcache;
+
+  reg_inferior = (struct thread_info *) find_inferior_id (&all_threads, lwpid);
+  if (reg_inferior == NULL)
+    return PS_ERR;
+
+  save_inferior = current_inferior;
+  current_inferior = reg_inferior;
+
+  regcache = new_register_cache ();
+  fpregset_info()->store_function (fpregset, regcache);
+  the_target->store_registers (0, regcache);
+  free_register_cache (regcache);
+
+  current_inferior = save_inferior;
+
+  return PS_OK;
+#endif
+  /* FIXME */
+  return PS_ERR;
+}
+
+/* Return overall process id of the target PH.  Special for GNU/Linux
+   -- not used on Solaris.  */
+
+pid_t
+ps_getpid (gdb_ps_prochandle_t ph)
+{
+  return ph->pid;
+}
+
+