1 /* GNU/Linux/CRIS specific low level interface, for the remote server for GDB.
2 Copyright (C) 1995, 1996, 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005,
3 2007 Free Software Foundation, Inc.
5 This file is part of GDB.
7 This program is free software; you can redistribute it and/or modify
8 it under the terms of the GNU General Public License as published by
9 the Free Software Foundation; either version 2 of the License, or
10 (at your option) any later version.
12 This program is distributed in the hope that it will be useful,
13 but WITHOUT ANY WARRANTY; without even the implied warranty of
14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 GNU General Public License for more details.
17 You should have received a copy of the GNU General Public License
18 along with this program; if not, write to the Free Software
19 Foundation, Inc., 51 Franklin Street, Fifth Floor,
20 Boston, MA 02110-1301, USA. */
23 #include "linux-low.h"
24 #include <sys/ptrace.h>
27 #define cris_num_regs 32
29 /* Locations need to match <include/asm/arch/ptrace.h>. */
30 static int cris_regmap[] = {
31 15*4, 14*4, 13*4, 12*4,
44 cris_cannot_store_register (int regno)
46 if (cris_regmap[regno] == -1)
49 return (regno >= cris_num_regs);
53 cris_cannot_fetch_register (int regno)
55 if (cris_regmap[regno] == -1)
58 return (regno >= cris_num_regs);
61 extern int debug_threads;
67 collect_register_by_name ("pc", &pc);
69 fprintf (stderr, "stop pc is %08lx\n", pc);
74 cris_set_pc (CORE_ADDR pc)
76 unsigned long newpc = pc;
77 supply_register_by_name ("pc", &newpc);
80 static const unsigned short cris_breakpoint = 0xe938;
81 #define cris_breakpoint_len 2
84 cris_breakpoint_at (CORE_ADDR where)
88 (*the_target->read_memory) (where, (unsigned char *) &insn,
90 if (insn == cris_breakpoint)
93 /* If necessary, recognize more trap instructions here. GDB only uses the
98 /* We only place breakpoints in empty marker functions, and thread locking
99 is outside of the function. So rather than importing software single-step,
100 we can just run until exit. */
102 cris_reinsert_addr (void)
105 collect_register_by_name ("srp", &pc);
109 struct linux_target_ops the_low_target = {
112 cris_cannot_fetch_register,
113 cris_cannot_store_register,
116 (const unsigned char *) &cris_breakpoint,