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, 2008 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 3 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, see <http://www.gnu.org/licenses/>. */
21 #include "linux-low.h"
22 #include <sys/ptrace.h>
25 #define cris_num_regs 32
27 /* Locations need to match <include/asm/arch/ptrace.h>. */
28 static int cris_regmap
[] = {
29 15*4, 14*4, 13*4, 12*4,
42 cris_cannot_store_register (int regno
)
44 if (cris_regmap
[regno
] == -1)
47 return (regno
>= cris_num_regs
);
51 cris_cannot_fetch_register (int regno
)
53 if (cris_regmap
[regno
] == -1)
56 return (regno
>= cris_num_regs
);
59 extern int debug_threads
;
65 collect_register_by_name ("pc", &pc
);
67 fprintf (stderr
, "stop pc is %08lx\n", pc
);
72 cris_set_pc (CORE_ADDR pc
)
74 unsigned long newpc
= pc
;
75 supply_register_by_name ("pc", &newpc
);
78 static const unsigned short cris_breakpoint
= 0xe938;
79 #define cris_breakpoint_len 2
82 cris_breakpoint_at (CORE_ADDR where
)
86 (*the_target
->read_memory
) (where
, (unsigned char *) &insn
,
88 if (insn
== cris_breakpoint
)
91 /* If necessary, recognize more trap instructions here. GDB only uses the
96 /* We only place breakpoints in empty marker functions, and thread locking
97 is outside of the function. So rather than importing software single-step,
98 we can just run until exit. */
100 cris_reinsert_addr (void)
103 collect_register_by_name ("srp", &pc
);
107 struct linux_target_ops the_low_target
= {
110 cris_cannot_fetch_register
,
111 cris_cannot_store_register
,
114 (const unsigned char *) &cris_breakpoint
,