Stop threads when attaching to a PID that is the tgid.

[deliverable/binutils-gdb.git] / gdb / gdbserver / linux-m68k-low.c

diff --git a/gdb/gdbserver/linux-m68k-low.c b/gdb/gdbserver/linux-m68k-low.c
index 760de6e05352854040b05aa051bdf59729e7db90..f266997c24baa67d6aa69acdcfc05b5f128f887b 100644 (file)
--- a/gdb/gdbserver/linux-m68k-low.c
+++ b/gdb/gdbserver/linux-m68k-low.c
@@ -1,12 +1,12 @@
 /* GNU/Linux/m68k specific low level interface, for the remote server for GDB.
-   Copyright 1995, 1996, 1998, 1999, 2000, 2001, 2002
-   Free Software Foundation, Inc.
+   Copyright (C) 1995, 1996, 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005,
+   2007, 2008, 2009, 2010, 2011 Free Software Foundation, Inc.
 
    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
+   the Free Software Foundation; either version 3 of the License, or
    (at your option) any later version.
 
    This program is distributed in the hope that it will be useful,
@@ -15,18 +15,20 @@
    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.  */
+   along with this program.  If not, see <http://www.gnu.org/licenses/>.  */
 
 #include "server.h"
 #include "linux-low.h"
 
+/* Defined in auto-generated file reg-m68k.c.  */
+void init_registers_m68k (void);
+
 #ifdef HAVE_SYS_REG_H
 #include <sys/reg.h>
 #endif
 
-#define m68k_num_regs 31
+#define m68k_num_regs 29
+#define m68k_num_gregs 18
 
 /* This table must line up with REGISTER_NAMES in tm-m68k.h */
 static int m68k_regmap[] =
@@ -64,9 +66,126 @@ m68k_cannot_fetch_register (int regno)
   return (regno >= m68k_num_regs);
 }
 
+#ifdef HAVE_PTRACE_GETREGS
+#include <sys/procfs.h>
+#include <sys/ptrace.h>
+
+static void
+m68k_fill_gregset (struct regcache *regcache, void *buf)
+{
+  int i;
+
+  for (i = 0; i < m68k_num_gregs; i++)
+    collect_register (regcache, i, (char *) buf + m68k_regmap[i]);
+}
+
+static void
+m68k_store_gregset (struct regcache *regcache, const void *buf)
+{
+  int i;
+
+  for (i = 0; i < m68k_num_gregs; i++)
+    supply_register (regcache, i, (const char *) buf + m68k_regmap[i]);
+}
+
+static void
+m68k_fill_fpregset (struct regcache *regcache, void *buf)
+{
+  int i;
+
+  for (i = m68k_num_gregs; i < m68k_num_regs; i++)
+    collect_register (regcache, i, ((char *) buf
+                        + (m68k_regmap[i] - m68k_regmap[m68k_num_gregs])));
+}
+
+static void
+m68k_store_fpregset (struct regcache *regcache, const void *buf)
+{
+  int i;
+
+  for (i = m68k_num_gregs; i < m68k_num_regs; i++)
+    supply_register (regcache, i, ((const char *) buf
+                        + (m68k_regmap[i] - m68k_regmap[m68k_num_gregs])));
+}
+
+#endif /* HAVE_PTRACE_GETREGS */
+
+struct regset_info target_regsets[] = {
+#ifdef HAVE_PTRACE_GETREGS
+  { PTRACE_GETREGS, PTRACE_SETREGS, 0, sizeof (elf_gregset_t),
+    GENERAL_REGS,
+    m68k_fill_gregset, m68k_store_gregset },
+  { PTRACE_GETFPREGS, PTRACE_SETFPREGS, 0, sizeof (elf_fpregset_t),
+    FP_REGS,
+    m68k_fill_fpregset, m68k_store_fpregset },
+#endif /* HAVE_PTRACE_GETREGS */
+  { 0, 0, 0, -1, -1, NULL, NULL }
+};
+
+static const unsigned char m68k_breakpoint[] = { 0x4E, 0x4F };
+#define m68k_breakpoint_len 2
+
+static CORE_ADDR
+m68k_get_pc (struct regcache *regcache)
+{
+  unsigned long pc;
+
+  collect_register_by_name (regcache, "pc", &pc);
+  return pc;
+}
+
+static void
+m68k_set_pc (struct regcache *regcache, CORE_ADDR value)
+{
+  unsigned long newpc = value;
+
+  supply_register_by_name (regcache, "pc", &newpc);
+}
+
+static int
+m68k_breakpoint_at (CORE_ADDR pc)
+{
+  unsigned char c[2];
+
+  read_inferior_memory (pc, c, 2);
+  if (c[0] == 0x4E && c[1] == 0x4F)
+    return 1;
+
+  return 0;
+}
+
+#include <asm/ptrace.h>
+
+#ifdef PTRACE_GET_THREAD_AREA
+/* Fetch the thread-local storage pointer for libthread_db.  */
+
+ps_err_e
+ps_get_thread_area (const struct ps_prochandle *ph,
+                   lwpid_t lwpid, int idx, void **base)
+{
+  if (ptrace (PTRACE_GET_THREAD_AREA, lwpid, NULL, base) != 0)
+    return PS_ERR;
+
+  /* IDX is the bias from the thread pointer to the beginning of the
+     thread descriptor.  It has to be subtracted due to implementation
+     quirks in libthread_db.  */
+  *base = (void *) ((char *)*base - idx);
+
+  return PS_OK;
+}
+#endif /* PTRACE_GET_THREAD_AREA */
+
 struct linux_target_ops the_low_target = {
+  init_registers_m68k,
   m68k_num_regs,
   m68k_regmap,
   m68k_cannot_fetch_register,
   m68k_cannot_store_register,
+  m68k_get_pc,
+  m68k_set_pc,
+  m68k_breakpoint,
+  m68k_breakpoint_len,
+  NULL,
+  2,
+  m68k_breakpoint_at,
 };