Commit | Line | Data |
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0a30fbc4 | 1 | /* GNU/Linux/SH specific low level interface, for the remote server for GDB. |
c8a86edf | 2 | Copyright 1995, 1996, 1998, 1999, 2000, 2001, 2002, 2003 |
0a30fbc4 DJ |
3 | Free Software Foundation, Inc. |
4 | ||
5 | This file is part of GDB. | |
6 | ||
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. | |
11 | ||
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. | |
16 | ||
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., 59 Temple Place - Suite 330, | |
20 | Boston, MA 02111-1307, USA. */ | |
21 | ||
22 | #include "server.h" | |
58caa3dc | 23 | #include "linux-low.h" |
0a30fbc4 DJ |
24 | |
25 | #ifdef HAVE_SYS_REG_H | |
26 | #include <sys/reg.h> | |
27 | #endif | |
28 | ||
29 | #include <asm/ptrace.h> | |
30 | ||
2ec06d2e | 31 | #define sh_num_regs 41 |
0a30fbc4 DJ |
32 | |
33 | /* Currently, don't check/send MQ. */ | |
2ec06d2e | 34 | static int sh_regmap[] = { |
0a30fbc4 DJ |
35 | 0, 4, 8, 12, 16, 20, 24, 28, |
36 | 32, 36, 40, 44, 48, 52, 56, 60, | |
37 | ||
38 | REG_PC*4, REG_PR*4, REG_GBR*4, -1, | |
39 | REG_MACH*4, REG_MACL*4, REG_SR*4, | |
40 | REG_FPUL*4, REG_FPSCR*4, | |
41 | ||
c8a86edf DJ |
42 | REG_FPREG0*4+0, REG_FPREG0*4+4, REG_FPREG0*4+8, REG_FPREG0*4+12, |
43 | REG_FPREG0*4+16, REG_FPREG0*4+20, REG_FPREG0*4+24, REG_FPREG0*4+28, | |
44 | REG_FPREG0*4+32, REG_FPREG0*4+36, REG_FPREG0*4+40, REG_FPREG0*4+44, | |
45 | REG_FPREG0*4+48, REG_FPREG0*4+52, REG_FPREG0*4+56, REG_FPREG0*4+60, | |
0a30fbc4 DJ |
46 | }; |
47 | ||
2ec06d2e DJ |
48 | static int |
49 | sh_cannot_store_register (int regno) | |
0a30fbc4 DJ |
50 | { |
51 | return 0; | |
52 | } | |
53 | ||
2ec06d2e DJ |
54 | static int |
55 | sh_cannot_fetch_register (int regno) | |
0a30fbc4 DJ |
56 | { |
57 | return 0; | |
58 | } | |
59 | ||
0d62e5e8 DJ |
60 | static CORE_ADDR |
61 | sh_get_pc () | |
62 | { | |
63 | unsigned long pc; | |
64 | collect_register_by_name ("pc", &pc); | |
65 | return pc; | |
66 | } | |
67 | ||
68 | static void | |
69 | sh_set_pc (CORE_ADDR pc) | |
70 | { | |
71 | unsigned long newpc = pc; | |
72 | supply_register_by_name ("pc", &newpc); | |
73 | } | |
74 | ||
75 | /* Correct in either endianness, obviously. */ | |
76 | static const unsigned short sh_breakpoint = 0xc3c3; | |
77 | #define sh_breakpoint_len 2 | |
78 | ||
79 | static int | |
80 | sh_breakpoint_at (CORE_ADDR where) | |
81 | { | |
82 | unsigned short insn; | |
83 | ||
84 | (*the_target->read_memory) (where, (char *) &insn, 2); | |
85 | if (insn == sh_breakpoint) | |
86 | return 1; | |
87 | ||
88 | /* If necessary, recognize more trap instructions here. GDB only uses the | |
89 | one. */ | |
90 | return 0; | |
91 | } | |
92 | ||
2ec06d2e DJ |
93 | struct linux_target_ops the_low_target = { |
94 | sh_num_regs, | |
95 | sh_regmap, | |
96 | sh_cannot_fetch_register, | |
97 | sh_cannot_store_register, | |
0d62e5e8 DJ |
98 | sh_get_pc, |
99 | sh_set_pc, | |
100 | (const char *) &sh_breakpoint, | |
101 | sh_breakpoint_len, | |
102 | NULL, | |
103 | 0, | |
104 | sh_breakpoint_at, | |
2ec06d2e | 105 | }; |