1 /* GNU/Linux/SH specific low level interface, for the remote server for GDB.
2 Copyright (C) 1995, 1996, 1998, 1999, 2000, 2001, 2002, 2003, 2005, 2007,
3 2008, 2009, 2010 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"
23 /* Defined in auto-generated file reg-sh.c. */
24 void init_registers_sh (void);
30 #include <asm/ptrace.h>
32 #define sh_num_regs 41
34 /* Currently, don't check/send MQ. */
35 static int sh_regmap
[] = {
36 0, 4, 8, 12, 16, 20, 24, 28,
37 32, 36, 40, 44, 48, 52, 56, 60,
39 REG_PC
*4, REG_PR
*4, REG_GBR
*4, -1,
40 REG_MACH
*4, REG_MACL
*4, REG_SR
*4,
41 REG_FPUL
*4, REG_FPSCR
*4,
43 REG_FPREG0
*4+0, REG_FPREG0
*4+4, REG_FPREG0
*4+8, REG_FPREG0
*4+12,
44 REG_FPREG0
*4+16, REG_FPREG0
*4+20, REG_FPREG0
*4+24, REG_FPREG0
*4+28,
45 REG_FPREG0
*4+32, REG_FPREG0
*4+36, REG_FPREG0
*4+40, REG_FPREG0
*4+44,
46 REG_FPREG0
*4+48, REG_FPREG0
*4+52, REG_FPREG0
*4+56, REG_FPREG0
*4+60,
50 sh_cannot_store_register (int regno
)
56 sh_cannot_fetch_register (int regno
)
65 collect_register_by_name ("pc", &pc
);
70 sh_set_pc (CORE_ADDR pc
)
72 unsigned long newpc
= pc
;
73 supply_register_by_name ("pc", &newpc
);
76 /* Correct in either endianness, obviously. */
77 static const unsigned short sh_breakpoint
= 0xc3c3;
78 #define sh_breakpoint_len 2
81 sh_breakpoint_at (CORE_ADDR where
)
85 (*the_target
->read_memory
) (where
, (unsigned char *) &insn
, 2);
86 if (insn
== sh_breakpoint
)
89 /* If necessary, recognize more trap instructions here. GDB only uses the
94 /* Provide only a fill function for the general register set. ps_lgetregs
95 will use this for NPTL support. */
97 static void sh_fill_gregset (void *buf
)
101 for (i
= 0; i
< 23; i
++)
102 if (sh_regmap
[i
] != -1)
103 collect_register (i
, (char *) buf
+ sh_regmap
[i
]);
106 struct regset_info target_regsets
[] = {
107 { 0, 0, 0, GENERAL_REGS
, sh_fill_gregset
, NULL
},
108 { 0, 0, -1, -1, NULL
, NULL
}
111 struct linux_target_ops the_low_target
= {
115 sh_cannot_fetch_register
,
116 sh_cannot_store_register
,
119 (const unsigned char *) &sh_breakpoint
,