Commit | Line | Data |
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7cfbc4a0 | 1 | /* GNU/Linux/m32r specific low level interface, for the remote server for GDB. |
32d0add0 | 2 | Copyright (C) 2005-2015 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 | ||
d05b4ac3 UW |
26 | /* Defined in auto-generated file reg-m32r.c. */ |
27 | void init_registers_m32r (void); | |
3aee8918 | 28 | extern const struct target_desc *tdesc_m32r; |
d05b4ac3 | 29 | |
7cfbc4a0 KI |
30 | #define m32r_num_regs 25 |
31 | ||
32 | static int m32r_regmap[] = { | |
33 | #ifdef PT_R0 | |
34 | PT_R0, PT_R1, PT_R2, PT_R3, PT_R4, PT_R5, PT_R6, PT_R7, | |
35 | PT_R8, PT_R9, PT_R10, PT_R11, PT_R12, PT_FP, PT_LR, PT_SPU, | |
36 | PT_PSW, PT_CBR, PT_SPI, PT_SPU, PT_BPC, PT_PC, PT_ACCL, PT_ACCH, PT_EVB | |
37 | #else | |
38 | 4 * 4, 4 * 5, 4 * 6, 4 * 7, 4 * 0, 4 * 1, 4 * 2, 4 * 8, | |
39 | 4 * 9, 4 * 10, 4 * 11, 4 * 12, 4 * 13, 4 * 24, 4 * 25, 4 * 23, | |
40 | 4 * 19, 4 * 31, 4 * 26, 4 * 23, 4 * 20, 4 * 30, 4 * 16, 4 * 15, 4 * 32 | |
41 | #endif | |
42 | }; | |
43 | ||
44 | static int | |
45 | m32r_cannot_store_register (int regno) | |
46 | { | |
47 | return (regno >= m32r_num_regs); | |
48 | } | |
49 | ||
50 | static int | |
51 | m32r_cannot_fetch_register (int regno) | |
52 | { | |
53 | return (regno >= m32r_num_regs); | |
54 | } | |
55 | ||
56 | static CORE_ADDR | |
442ea881 | 57 | m32r_get_pc (struct regcache *regcache) |
7cfbc4a0 KI |
58 | { |
59 | unsigned long pc; | |
442ea881 PA |
60 | collect_register_by_name (regcache, "pc", &pc); |
61 | if (debug_threads) | |
87ce2a04 | 62 | debug_printf ("stop pc is %08lx\n", pc); |
7cfbc4a0 KI |
63 | return pc; |
64 | } | |
65 | ||
66 | static void | |
442ea881 | 67 | m32r_set_pc (struct regcache *regcache, CORE_ADDR pc) |
7cfbc4a0 KI |
68 | { |
69 | unsigned long newpc = pc; | |
442ea881 | 70 | supply_register_by_name (regcache, "pc", &newpc); |
7cfbc4a0 KI |
71 | } |
72 | ||
73 | static const unsigned short m32r_breakpoint = 0x10f1; | |
74 | #define m32r_breakpoint_len 2 | |
75 | ||
76 | static int | |
77 | m32r_breakpoint_at (CORE_ADDR where) | |
78 | { | |
79 | unsigned short insn; | |
80 | ||
f450004a DJ |
81 | (*the_target->read_memory) (where, (unsigned char *) &insn, |
82 | m32r_breakpoint_len); | |
7cfbc4a0 KI |
83 | if (insn == m32r_breakpoint) |
84 | return 1; | |
85 | ||
86 | /* If necessary, recognize more trap instructions here. GDB only uses the | |
87 | one. */ | |
88 | return 0; | |
89 | } | |
90 | ||
3aee8918 PA |
91 | static void |
92 | m32r_arch_setup (void) | |
93 | { | |
94 | current_process ()->tdesc = tdesc_m32r; | |
95 | } | |
96 | ||
97 | static struct usrregs_info m32r_usrregs_info = | |
98 | { | |
99 | m32r_num_regs, | |
100 | m32r_regmap, | |
101 | }; | |
102 | ||
103 | static struct regs_info regs_info = | |
104 | { | |
105 | NULL, /* regset_bitmap */ | |
106 | &m32r_usrregs_info, | |
107 | }; | |
108 | ||
109 | static const struct regs_info * | |
110 | m32r_regs_info (void) | |
111 | { | |
112 | return ®s_info; | |
113 | } | |
114 | ||
7cfbc4a0 | 115 | struct linux_target_ops the_low_target = { |
3aee8918 PA |
116 | m32r_arch_setup, |
117 | m32r_regs_info, | |
7cfbc4a0 KI |
118 | m32r_cannot_fetch_register, |
119 | m32r_cannot_store_register, | |
c14dfd32 | 120 | NULL, /* fetch_register */ |
7cfbc4a0 KI |
121 | m32r_get_pc, |
122 | m32r_set_pc, | |
f450004a | 123 | (const unsigned char *) &m32r_breakpoint, |
7cfbc4a0 KI |
124 | m32r_breakpoint_len, |
125 | NULL, | |
126 | 0, | |
127 | m32r_breakpoint_at, | |
128 | }; | |
3aee8918 PA |
129 | |
130 | void | |
131 | initialize_low_arch (void) | |
132 | { | |
133 | init_registers_m32r (); | |
134 | } |