Add the target_ops needed for software breakpoints in GDBServer.

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

diff --git a/gdb/gdbserver/linux-cris-low.c b/gdb/gdbserver/linux-cris-low.c
index 283d9165e7e93af82e3b98d2592b37cb762e5eae..d7b70e3eae3620b6baec445dc950681710d06ed6 100644 (file)
--- a/gdb/gdbserver/linux-cris-low.c
+++ b/gdb/gdbserver/linux-cris-low.c
@@ -1,12 +1,11 @@
 /* GNU/Linux/CRIS specific low level interface, for the remote server for GDB.
-   Copyright (C) 1995, 1996, 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005,
-   2007 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"
-#include <sys/ptrace.h>
+#include "nat/gdb_ptrace.h"
+
+/* Defined in auto-generated file reg-cris.c.  */
+void init_registers_cris (void);
+extern const struct target_desc *tdesc_cris;
 
 /* CRISv10 */
 #define cris_num_regs 32
@@ -37,7 +38,7 @@ static int cris_regmap[] = {
   -1, 17*4, -1, 16*4,
   -1, -1, -1, 18*4,
   -1, 17*4, -1, -1
-  
+
 };
 
 static int
@@ -45,7 +46,7 @@ cris_cannot_store_register (int regno)
 {
   if (cris_regmap[regno] == -1)
     return 1;
-  
+
   return (regno >= cris_num_regs);
 }
 
@@ -61,25 +62,34 @@ cris_cannot_fetch_register (int regno)
 extern int debug_threads;
 
 static CORE_ADDR
-cris_get_pc (void)
+cris_get_pc (struct regcache *regcache)
 {
   unsigned long pc;
-  collect_register_by_name ("pc", &pc);
+  collect_register_by_name (regcache, "pc", &pc);
   if (debug_threads)
-    fprintf (stderr, "stop pc is %08lx\n", pc);
+    debug_printf ("stop pc is %08lx\n", pc);
   return pc;
 }
 
 static void
-cris_set_pc (CORE_ADDR pc)
+cris_set_pc (struct regcache *regcache, CORE_ADDR pc)
 {
   unsigned long newpc = pc;
-  supply_register_by_name ("pc", &newpc);
+  supply_register_by_name (regcache, "pc", &newpc);
 }
 
 static const unsigned short cris_breakpoint = 0xe938;
 #define cris_breakpoint_len 2
 
+/* Implementation of linux_target_ops method "sw_breakpoint_from_kind".  */
+
+static const gdb_byte *
+cris_sw_breakpoint_from_kind (int kind, int *size)
+{
+  *size = cris_breakpoint_len;
+  return (const gdb_byte *) &cris_breakpoint;
+}
+
 static int
 cris_breakpoint_at (CORE_ADDR where)
 {
@@ -101,20 +111,46 @@ cris_breakpoint_at (CORE_ADDR where)
 static CORE_ADDR
 cris_reinsert_addr (void)
 {
+  struct regcache *regcache = get_thread_regcache (current_thread, 1);
   unsigned long pc;
-  collect_register_by_name ("srp", &pc);
+  collect_register_by_name (regcache, "srp", &pc);
   return pc;
 }
 
+static void
+cris_arch_setup (void)
+{
+  current_process ()->tdesc = tdesc_cris;
+}
+
+static struct usrregs_info cris_usrregs_info =
+  {
+    cris_num_regs,
+    cris_regmap,
+  };
+
+static struct regs_info regs_info =
+  {
+    NULL, /* regset_bitmap */
+    &cris_usrregs_info,
+  };
+
+static const struct regs_info *
+cris_regs_info (void)
+{
+  return &regs_info;
+}
+
 struct linux_target_ops the_low_target = {
-  cris_num_regs,
-  cris_regmap,
+  cris_arch_setup,
+  cris_regs_info,
   cris_cannot_fetch_register,
   cris_cannot_store_register,
+  NULL, /* fetch_register */
   cris_get_pc,
   cris_set_pc,
-  (const unsigned char *) &cris_breakpoint,
-  cris_breakpoint_len,
+  NULL, /* breakpoint_kind_from_pc */
+  cris_sw_breakpoint_from_kind,
   cris_reinsert_addr,
   0,
   cris_breakpoint_at,
@@ -123,3 +159,9 @@ struct linux_target_ops the_low_target = {
   0,
   0,
 };
+
+void
+initialize_low_arch (void)
+{
+  init_registers_cris ();
+}