Commit | Line | Data |
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7cfbc4a0 | 1 | /* GNU/Linux/m32r specific low level interface, for the remote server for GDB. |
b811d2c2 | 2 | Copyright (C) 2005-2020 Free Software Foundation, Inc. |
7cfbc4a0 KI |
3 | |
4 | This file is part of GDB. | |
5 | ||
6 | This program is free software; you can redistribute it and/or modify | |
7 | it under the terms of the GNU General Public License as published by | |
a9762ec7 | 8 | the Free Software Foundation; either version 3 of the License, or |
7cfbc4a0 KI |
9 | (at your option) any later version. |
10 | ||
11 | This program is distributed in the hope that it will be useful, | |
12 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
13 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
14 | GNU General Public License for more details. | |
15 | ||
16 | You should have received a copy of the GNU General Public License | |
a9762ec7 | 17 | along with this program. If not, see <http://www.gnu.org/licenses/>. */ |
7cfbc4a0 KI |
18 | |
19 | #include "server.h" | |
20 | #include "linux-low.h" | |
21 | ||
22 | #ifdef HAVE_SYS_REG_H | |
23 | #include <sys/reg.h> | |
24 | #endif | |
25 | ||
ef0478f6 TBA |
26 | /* Linux target op definitions for the m32r architecture. */ |
27 | ||
28 | class m32r_target : public linux_process_target | |
29 | { | |
30 | public: | |
31 | ||
aa8d21c9 TBA |
32 | const regs_info *get_regs_info () override; |
33 | ||
3ca4edb6 TBA |
34 | const gdb_byte *sw_breakpoint_from_kind (int kind, int *size) override; |
35 | ||
797bcff5 TBA |
36 | protected: |
37 | ||
38 | void low_arch_setup () override; | |
daca57a7 TBA |
39 | |
40 | bool low_cannot_fetch_register (int regno) override; | |
41 | ||
42 | bool low_cannot_store_register (int regno) override; | |
bf9ae9d8 TBA |
43 | |
44 | bool low_supports_breakpoints () override; | |
45 | ||
46 | CORE_ADDR low_get_pc (regcache *regcache) override; | |
47 | ||
48 | void low_set_pc (regcache *regcache, CORE_ADDR newpc) override; | |
d7146cda TBA |
49 | |
50 | bool low_breakpoint_at (CORE_ADDR pc) override; | |
ef0478f6 TBA |
51 | }; |
52 | ||
53 | /* The singleton target ops object. */ | |
54 | ||
55 | static m32r_target the_m32r_target; | |
56 | ||
bf9ae9d8 TBA |
57 | bool |
58 | m32r_target::low_supports_breakpoints () | |
59 | { | |
60 | return true; | |
61 | } | |
62 | ||
63 | CORE_ADDR | |
64 | m32r_target::low_get_pc (regcache *regcache) | |
65 | { | |
66 | return linux_get_pc_32bit (regcache); | |
67 | } | |
68 | ||
69 | void | |
70 | m32r_target::low_set_pc (regcache *regcache, CORE_ADDR pc) | |
71 | { | |
72 | linux_set_pc_32bit (regcache, pc); | |
73 | } | |
74 | ||
d05b4ac3 UW |
75 | /* Defined in auto-generated file reg-m32r.c. */ |
76 | void init_registers_m32r (void); | |
3aee8918 | 77 | extern const struct target_desc *tdesc_m32r; |
d05b4ac3 | 78 | |
7cfbc4a0 KI |
79 | #define m32r_num_regs 25 |
80 | ||
81 | static int m32r_regmap[] = { | |
82 | #ifdef PT_R0 | |
83 | PT_R0, PT_R1, PT_R2, PT_R3, PT_R4, PT_R5, PT_R6, PT_R7, | |
84 | PT_R8, PT_R9, PT_R10, PT_R11, PT_R12, PT_FP, PT_LR, PT_SPU, | |
85 | PT_PSW, PT_CBR, PT_SPI, PT_SPU, PT_BPC, PT_PC, PT_ACCL, PT_ACCH, PT_EVB | |
86 | #else | |
87 | 4 * 4, 4 * 5, 4 * 6, 4 * 7, 4 * 0, 4 * 1, 4 * 2, 4 * 8, | |
88 | 4 * 9, 4 * 10, 4 * 11, 4 * 12, 4 * 13, 4 * 24, 4 * 25, 4 * 23, | |
89 | 4 * 19, 4 * 31, 4 * 26, 4 * 23, 4 * 20, 4 * 30, 4 * 16, 4 * 15, 4 * 32 | |
90 | #endif | |
91 | }; | |
92 | ||
daca57a7 TBA |
93 | bool |
94 | m32r_target::low_cannot_store_register (int regno) | |
7cfbc4a0 KI |
95 | { |
96 | return (regno >= m32r_num_regs); | |
97 | } | |
98 | ||
daca57a7 TBA |
99 | bool |
100 | m32r_target::low_cannot_fetch_register (int regno) | |
7cfbc4a0 KI |
101 | { |
102 | return (regno >= m32r_num_regs); | |
103 | } | |
104 | ||
7cfbc4a0 KI |
105 | static const unsigned short m32r_breakpoint = 0x10f1; |
106 | #define m32r_breakpoint_len 2 | |
107 | ||
3ca4edb6 | 108 | /* Implementation of target ops method "sw_breakpoint_from_kind". */ |
dd373349 | 109 | |
3ca4edb6 TBA |
110 | const gdb_byte * |
111 | m32r_target::sw_breakpoint_from_kind (int kind, int *size) | |
dd373349 AT |
112 | { |
113 | *size = m32r_breakpoint_len; | |
114 | return (const gdb_byte *) &m32r_breakpoint; | |
115 | } | |
116 | ||
d7146cda TBA |
117 | bool |
118 | m32r_target::low_breakpoint_at (CORE_ADDR where) | |
7cfbc4a0 KI |
119 | { |
120 | unsigned short insn; | |
121 | ||
d7146cda | 122 | read_memory (where, (unsigned char *) &insn, m32r_breakpoint_len); |
7cfbc4a0 | 123 | if (insn == m32r_breakpoint) |
d7146cda | 124 | return true; |
7cfbc4a0 KI |
125 | |
126 | /* If necessary, recognize more trap instructions here. GDB only uses the | |
127 | one. */ | |
d7146cda | 128 | return false; |
7cfbc4a0 KI |
129 | } |
130 | ||
797bcff5 TBA |
131 | void |
132 | m32r_target::low_arch_setup () | |
3aee8918 PA |
133 | { |
134 | current_process ()->tdesc = tdesc_m32r; | |
135 | } | |
136 | ||
137 | static struct usrregs_info m32r_usrregs_info = | |
138 | { | |
139 | m32r_num_regs, | |
140 | m32r_regmap, | |
141 | }; | |
142 | ||
aa8d21c9 | 143 | static struct regs_info myregs_info = |
3aee8918 PA |
144 | { |
145 | NULL, /* regset_bitmap */ | |
146 | &m32r_usrregs_info, | |
147 | }; | |
148 | ||
aa8d21c9 TBA |
149 | const regs_info * |
150 | m32r_target::get_regs_info () | |
3aee8918 | 151 | { |
aa8d21c9 | 152 | return &myregs_info; |
3aee8918 PA |
153 | } |
154 | ||
ef0478f6 TBA |
155 | /* The linux target ops object. */ |
156 | ||
157 | linux_process_target *the_linux_target = &the_m32r_target; | |
158 | ||
3aee8918 PA |
159 | void |
160 | initialize_low_arch (void) | |
161 | { | |
162 | init_registers_m32r (); | |
163 | } |