Linux x86 low-level debug register comment synchronization

[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 aa5a5dd5a967b0b2456001bd7a1e661a8d956eae..4501904e391a8607c21e91c0059935d8b491eb1e 100644 (file)
--- a/gdb/gdbserver/linux-m68k-low.c
+++ b/gdb/gdbserver/linux-m68k-low.c
@@ -1,12 +1,11 @@
 /* GNU/Linux/m68k specific low level interface, for the remote server for GDB.
-   Copyright (C) 1995, 1996, 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005
-   Free Software Foundation, Inc.
+   Copyright (C) 1995-2015 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,
@@ -15,13 +14,15 @@
    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., 51 Franklin Street, Fifth Floor,
-   Boston, MA 02110-1301, 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);
+extern const struct target_desc *tdesc_m68k;
+
 #ifdef HAVE_SYS_REG_H
 #include <sys/reg.h>
 #endif
@@ -70,75 +71,75 @@ m68k_cannot_fetch_register (int regno)
 #include <sys/ptrace.h>
 
 static void
-m68k_fill_gregset (void *buf)
+m68k_fill_gregset (struct regcache *regcache, void *buf)
 {
   int i;
 
   for (i = 0; i < m68k_num_gregs; i++)
-    collect_register (i, (char *) buf + m68k_regmap[i]);
+    collect_register (regcache, i, (char *) buf + m68k_regmap[i]);
 }
 
 static void
-m68k_store_gregset (const void *buf)
+m68k_store_gregset (struct regcache *regcache, const void *buf)
 {
   int i;
 
   for (i = 0; i < m68k_num_gregs; i++)
-    supply_register (i, (const char *) buf + m68k_regmap[i]);
+    supply_register (regcache, i, (const char *) buf + m68k_regmap[i]);
 }
 
 static void
-m68k_fill_fpregset (void *buf)
+m68k_fill_fpregset (struct regcache *regcache, void *buf)
 {
   int i;
 
   for (i = m68k_num_gregs; i < m68k_num_regs; i++)
-    collect_register (i, ((char *) buf
-                         + (m68k_regmap[i] - m68k_regmap[m68k_num_gregs])));
+    collect_register (regcache, i, ((char *) buf
+                        + (m68k_regmap[i] - m68k_regmap[m68k_num_gregs])));
 }
 
 static void
-m68k_store_fpregset (const void *buf)
+m68k_store_fpregset (struct regcache *regcache, const void *buf)
 {
   int i;
 
   for (i = m68k_num_gregs; i < m68k_num_regs; i++)
-    supply_register (i, ((const char *) buf
+    supply_register (regcache, i, ((const char *) buf
                         + (m68k_regmap[i] - m68k_regmap[m68k_num_gregs])));
 }
 
 #endif /* HAVE_PTRACE_GETREGS */
 
-struct regset_info target_regsets[] = {
+static struct regset_info m68k_regsets[] = {
 #ifdef HAVE_PTRACE_GETREGS
-  { PTRACE_GETREGS, PTRACE_SETREGS, sizeof (elf_gregset_t),
+  { PTRACE_GETREGS, PTRACE_SETREGS, 0, sizeof (elf_gregset_t),
     GENERAL_REGS,
     m68k_fill_gregset, m68k_store_gregset },
-  { PTRACE_GETFPREGS, PTRACE_SETFPREGS, sizeof (elf_fpregset_t),
+  { PTRACE_GETFPREGS, PTRACE_SETFPREGS, 0, sizeof (elf_fpregset_t),
     FP_REGS,
     m68k_fill_fpregset, m68k_store_fpregset },
 #endif /* HAVE_PTRACE_GETREGS */
-  { 0, 0, -1, -1, NULL, NULL }
+  { 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 ()
+m68k_get_pc (struct regcache *regcache)
 {
   unsigned long pc;
 
-  collect_register_by_name ("pc", &pc);
+  collect_register_by_name (regcache, "pc", &pc);
   return pc;
 }
 
 static void
-m68k_set_pc (CORE_ADDR value)
+m68k_set_pc (struct regcache *regcache, CORE_ADDR value)
 {
   unsigned long newpc = value;
 
-  supply_register_by_name ("pc", &newpc);
+  supply_register_by_name (regcache, "pc", &newpc);
 }
 
 static int
@@ -153,11 +154,65 @@ m68k_breakpoint_at (CORE_ADDR pc)
   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 */
+
+static struct regsets_info m68k_regsets_info =
+  {
+    m68k_regsets, /* regsets */
+    0, /* num_regsets */
+    NULL, /* disabled_regsets */
+  };
+
+static struct usrregs_info m68k_usrregs_info =
+  {
+    m68k_num_regs,
+    m68k_regmap,
+  };
+
+static struct regs_info regs_info =
+  {
+    NULL, /* regset_bitmap */
+    &m68k_usrregs_info,
+    &m68k_regsets_info
+  };
+
+static const struct regs_info *
+m68k_regs_info (void)
+{
+  return &regs_info;
+}
+
+static void
+m68k_arch_setup (void)
+{
+  current_process ()->tdesc = tdesc_m68k;
+}
+
 struct linux_target_ops the_low_target = {
-  m68k_num_regs,
-  m68k_regmap,
+  m68k_arch_setup,
+  m68k_regs_info,
   m68k_cannot_fetch_register,
   m68k_cannot_store_register,
+  NULL, /* fetch_register */
   m68k_get_pc,
   m68k_set_pc,
   m68k_breakpoint,
@@ -166,3 +221,12 @@ struct linux_target_ops the_low_target = {
   2,
   m68k_breakpoint_at,
 };
+
+void
+initialize_low_arch (void)
+{
+  /* Initialize the Linux target descriptions.  */
+  init_registers_m68k ();
+
+  initialize_regsets_info (&m68k_regsets_info);
+}