Commit | Line | Data |
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0a30fbc4 | 1 | /* GNU/Linux/SH specific low level interface, for the remote server for GDB. |
6aba47ca | 2 | Copyright (C) 1995, 1996, 1998, 1999, 2000, 2001, 2002, 2003, 2005, 2007 |
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 | |
a9762ec7 | 9 | the Free Software Foundation; either version 3 of the License, or |
0a30fbc4 DJ |
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 | |
a9762ec7 | 18 | along with this program. If not, see <http://www.gnu.org/licenses/>. */ |
0a30fbc4 DJ |
19 | |
20 | #include "server.h" | |
58caa3dc | 21 | #include "linux-low.h" |
0a30fbc4 DJ |
22 | |
23 | #ifdef HAVE_SYS_REG_H | |
24 | #include <sys/reg.h> | |
25 | #endif | |
26 | ||
27 | #include <asm/ptrace.h> | |
28 | ||
2ec06d2e | 29 | #define sh_num_regs 41 |
0a30fbc4 DJ |
30 | |
31 | /* Currently, don't check/send MQ. */ | |
2ec06d2e | 32 | static int sh_regmap[] = { |
0a30fbc4 DJ |
33 | 0, 4, 8, 12, 16, 20, 24, 28, |
34 | 32, 36, 40, 44, 48, 52, 56, 60, | |
35 | ||
36 | REG_PC*4, REG_PR*4, REG_GBR*4, -1, | |
37 | REG_MACH*4, REG_MACL*4, REG_SR*4, | |
38 | REG_FPUL*4, REG_FPSCR*4, | |
39 | ||
c8a86edf DJ |
40 | REG_FPREG0*4+0, REG_FPREG0*4+4, REG_FPREG0*4+8, REG_FPREG0*4+12, |
41 | REG_FPREG0*4+16, REG_FPREG0*4+20, REG_FPREG0*4+24, REG_FPREG0*4+28, | |
42 | REG_FPREG0*4+32, REG_FPREG0*4+36, REG_FPREG0*4+40, REG_FPREG0*4+44, | |
43 | REG_FPREG0*4+48, REG_FPREG0*4+52, REG_FPREG0*4+56, REG_FPREG0*4+60, | |
0a30fbc4 DJ |
44 | }; |
45 | ||
2ec06d2e DJ |
46 | static int |
47 | sh_cannot_store_register (int regno) | |
0a30fbc4 DJ |
48 | { |
49 | return 0; | |
50 | } | |
51 | ||
2ec06d2e DJ |
52 | static int |
53 | sh_cannot_fetch_register (int regno) | |
0a30fbc4 DJ |
54 | { |
55 | return 0; | |
56 | } | |
57 | ||
0d62e5e8 DJ |
58 | static CORE_ADDR |
59 | sh_get_pc () | |
60 | { | |
61 | unsigned long pc; | |
62 | collect_register_by_name ("pc", &pc); | |
63 | return pc; | |
64 | } | |
65 | ||
66 | static void | |
67 | sh_set_pc (CORE_ADDR pc) | |
68 | { | |
69 | unsigned long newpc = pc; | |
70 | supply_register_by_name ("pc", &newpc); | |
71 | } | |
72 | ||
73 | /* Correct in either endianness, obviously. */ | |
74 | static const unsigned short sh_breakpoint = 0xc3c3; | |
75 | #define sh_breakpoint_len 2 | |
76 | ||
77 | static int | |
78 | sh_breakpoint_at (CORE_ADDR where) | |
79 | { | |
80 | unsigned short insn; | |
81 | ||
f450004a | 82 | (*the_target->read_memory) (where, (unsigned char *) &insn, 2); |
0d62e5e8 DJ |
83 | if (insn == sh_breakpoint) |
84 | return 1; | |
85 | ||
86 | /* If necessary, recognize more trap instructions here. GDB only uses the | |
87 | one. */ | |
88 | return 0; | |
89 | } | |
90 | ||
0d37add9 DJ |
91 | /* Provide only a fill function for the general register set. ps_lgetregs |
92 | will use this for NPTL support. */ | |
93 | ||
94 | static void sh_fill_gregset (void *buf) | |
95 | { | |
96 | int i; | |
97 | ||
98 | for (i = 0; i < 23; i++) | |
99 | if (sh_regmap[i] != -1) | |
100 | collect_register (i, (char *) buf + sh_regmap[i]); | |
101 | } | |
102 | ||
103 | struct regset_info target_regsets[] = { | |
104 | { 0, 0, 0, GENERAL_REGS, sh_fill_gregset, NULL }, | |
105 | { 0, 0, -1, -1, NULL, NULL } | |
106 | }; | |
107 | ||
2ec06d2e DJ |
108 | struct linux_target_ops the_low_target = { |
109 | sh_num_regs, | |
110 | sh_regmap, | |
111 | sh_cannot_fetch_register, | |
112 | sh_cannot_store_register, | |
0d62e5e8 DJ |
113 | sh_get_pc, |
114 | sh_set_pc, | |
f450004a | 115 | (const unsigned char *) &sh_breakpoint, |
0d62e5e8 DJ |
116 | sh_breakpoint_len, |
117 | NULL, | |
118 | 0, | |
119 | sh_breakpoint_at, | |
2ec06d2e | 120 | }; |