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7cfbc4a0 KI |
1 | /* GNU/Linux/m32r specific low level interface, for the remote server for GDB. |
2 | Copyright 2005 Free Software Foundation, Inc. | |
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 | |
8 | the Free Software Foundation; either version 2 of the License, or | |
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 | |
17 | along with this program; if not, write to the Free Software | |
18 | Foundation, Inc., 59 Temple Place - Suite 330, | |
19 | Boston, MA 02111-1307, USA. */ | |
20 | ||
21 | #include "server.h" | |
22 | #include "linux-low.h" | |
23 | ||
24 | #ifdef HAVE_SYS_REG_H | |
25 | #include <sys/reg.h> | |
26 | #endif | |
27 | ||
28 | #define m32r_num_regs 25 | |
29 | ||
30 | static int m32r_regmap[] = { | |
31 | #ifdef PT_R0 | |
32 | PT_R0, PT_R1, PT_R2, PT_R3, PT_R4, PT_R5, PT_R6, PT_R7, | |
33 | PT_R8, PT_R9, PT_R10, PT_R11, PT_R12, PT_FP, PT_LR, PT_SPU, | |
34 | PT_PSW, PT_CBR, PT_SPI, PT_SPU, PT_BPC, PT_PC, PT_ACCL, PT_ACCH, PT_EVB | |
35 | #else | |
36 | 4 * 4, 4 * 5, 4 * 6, 4 * 7, 4 * 0, 4 * 1, 4 * 2, 4 * 8, | |
37 | 4 * 9, 4 * 10, 4 * 11, 4 * 12, 4 * 13, 4 * 24, 4 * 25, 4 * 23, | |
38 | 4 * 19, 4 * 31, 4 * 26, 4 * 23, 4 * 20, 4 * 30, 4 * 16, 4 * 15, 4 * 32 | |
39 | #endif | |
40 | }; | |
41 | ||
42 | static int | |
43 | m32r_cannot_store_register (int regno) | |
44 | { | |
45 | return (regno >= m32r_num_regs); | |
46 | } | |
47 | ||
48 | static int | |
49 | m32r_cannot_fetch_register (int regno) | |
50 | { | |
51 | return (regno >= m32r_num_regs); | |
52 | } | |
53 | ||
54 | static CORE_ADDR | |
55 | m32r_get_pc () | |
56 | { | |
57 | unsigned long pc; | |
58 | collect_register_by_name ("pc", &pc); | |
59 | return pc; | |
60 | } | |
61 | ||
62 | static void | |
63 | m32r_set_pc (CORE_ADDR pc) | |
64 | { | |
65 | unsigned long newpc = pc; | |
66 | supply_register_by_name ("pc", &newpc); | |
67 | } | |
68 | ||
69 | static const unsigned short m32r_breakpoint = 0x10f1; | |
70 | #define m32r_breakpoint_len 2 | |
71 | ||
72 | static int | |
73 | m32r_breakpoint_at (CORE_ADDR where) | |
74 | { | |
75 | unsigned short insn; | |
76 | ||
77 | (*the_target->read_memory) (where, (char *) &insn, m32r_breakpoint_len); | |
78 | if (insn == m32r_breakpoint) | |
79 | return 1; | |
80 | ||
81 | /* If necessary, recognize more trap instructions here. GDB only uses the | |
82 | one. */ | |
83 | return 0; | |
84 | } | |
85 | ||
86 | struct linux_target_ops the_low_target = { | |
87 | m32r_num_regs, | |
88 | m32r_regmap, | |
89 | m32r_cannot_fetch_register, | |
90 | m32r_cannot_store_register, | |
91 | m32r_get_pc, | |
92 | m32r_set_pc, | |
93 | (const char *) &m32r_breakpoint, | |
94 | m32r_breakpoint_len, | |
95 | NULL, | |
96 | 0, | |
97 | m32r_breakpoint_at, | |
98 | }; |