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9b254dd1 | 1 | /* Copyright (C) 2007, 2008 Free Software Foundation, Inc. |
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2 | |
3 | This file is part of GDB. | |
4 | ||
5 | This program is free software; you can redistribute it and/or modify | |
6 | it under the terms of the GNU General Public License as published by | |
a9762ec7 | 7 | the Free Software Foundation; either version 3 of the License, or |
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8 | (at your option) any later version. |
9 | ||
10 | This program is distributed in the hope that it will be useful, | |
11 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
12 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
13 | GNU General Public License for more details. | |
14 | ||
15 | You should have received a copy of the GNU General Public License | |
a9762ec7 | 16 | along with this program. If not, see <http://www.gnu.org/licenses/>. */ |
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17 | |
18 | #include "server.h" | |
19 | #include "win32-low.h" | |
20 | ||
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21 | #ifndef CONTEXT_FLOATING_POINT |
22 | #define CONTEXT_FLOATING_POINT 0 | |
23 | #endif | |
24 | ||
68070c10 | 25 | static void |
34b34921 | 26 | arm_get_thread_context (win32_thread_info *th, DEBUG_EVENT* current_event) |
68070c10 | 27 | { |
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28 | th->context.ContextFlags = \ |
29 | CONTEXT_FULL | \ | |
30 | CONTEXT_FLOATING_POINT; | |
31 | ||
32 | GetThreadContext (th->h, &th->context); | |
33 | } | |
34 | ||
35 | static void | |
36 | arm_set_thread_context (win32_thread_info *th, DEBUG_EVENT* current_event) | |
37 | { | |
38 | SetThreadContext (th->h, &th->context); | |
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39 | } |
40 | ||
41 | #define context_offset(x) ((int)&(((CONTEXT *)NULL)->x)) | |
42 | static const int mappings[] = { | |
43 | context_offset (R0), | |
44 | context_offset (R1), | |
45 | context_offset (R2), | |
46 | context_offset (R3), | |
47 | context_offset (R4), | |
48 | context_offset (R5), | |
49 | context_offset (R6), | |
50 | context_offset (R7), | |
51 | context_offset (R8), | |
52 | context_offset (R9), | |
53 | context_offset (R10), | |
54 | context_offset (R11), | |
55 | context_offset (R12), | |
56 | context_offset (Sp), | |
57 | context_offset (Lr), | |
58 | context_offset (Pc), | |
59 | -1, /* f0 */ | |
60 | -1, /* f1 */ | |
61 | -1, /* f2 */ | |
62 | -1, /* f3 */ | |
63 | -1, /* f4 */ | |
64 | -1, /* f5 */ | |
65 | -1, /* f6 */ | |
66 | -1, /* f7 */ | |
67 | -1, /* fps */ | |
68 | context_offset (Psr), | |
69 | }; | |
70 | #undef context_offset | |
71 | ||
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72 | /* Return a pointer into a CONTEXT field indexed by gdb register number. |
73 | Return a pointer to an dummy register holding zero if there is no | |
74 | corresponding CONTEXT field for the given register number. */ | |
75 | static char * | |
76 | regptr (CONTEXT* c, int r) | |
77 | { | |
78 | if (mappings[r] < 0) | |
79 | { | |
80 | static ULONG zero; | |
81 | /* Always force value to zero, in case the user tried to write | |
82 | to this register before. */ | |
83 | zero = 0; | |
84 | return (char *) &zero; | |
85 | } | |
86 | else | |
87 | return (char *) c + mappings[r]; | |
88 | } | |
89 | ||
90 | /* Fetch register from gdbserver regcache data. */ | |
91 | static void | |
92 | arm_fetch_inferior_register (win32_thread_info *th, int r) | |
93 | { | |
94 | char *context_offset = regptr (&th->context, r); | |
95 | supply_register (r, context_offset); | |
96 | } | |
97 | ||
98 | /* Store a new register value into the thread context of TH. */ | |
99 | static void | |
100 | arm_store_inferior_register (win32_thread_info *th, int r) | |
101 | { | |
102 | collect_register (r, regptr (&th->context, r)); | |
103 | } | |
104 | ||
105 | /* Correct in either endianness. We do not support Thumb yet. */ | |
c5674cf1 | 106 | static const unsigned long arm_wince_breakpoint = 0xe6000010; |
34b34921 | 107 | #define arm_wince_breakpoint_len 4 |
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108 | |
109 | struct win32_target_ops the_low_target = { | |
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110 | sizeof (mappings) / sizeof (mappings[0]), |
111 | NULL, /* initial_stuff */ | |
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112 | arm_get_thread_context, |
113 | arm_set_thread_context, | |
114 | NULL, /* thread_added */ | |
115 | arm_fetch_inferior_register, | |
116 | arm_store_inferior_register, | |
68070c10 | 117 | NULL, /* single_step */ |
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118 | (const unsigned char *) &arm_wince_breakpoint, |
119 | arm_wince_breakpoint_len, | |
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120 | "arm" /* arch_string */ |
121 | }; |