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d4697bc9 | 1 | /* Copyright (C) 2011-2014 Free Software Foundation, Inc. |
63d143a2 CM |
2 | This file is part of the GNU C Library. |
3 | Contributed by Chris Metcalf <cmetcalf@tilera.com>, 2011. | |
4 | ||
5 | The GNU C Library is free software; you can redistribute it and/or | |
6 | modify it under the terms of the GNU Lesser General Public | |
7 | License as published by the Free Software Foundation; either | |
8 | version 2.1 of the License, or (at your option) any later version. | |
9 | ||
10 | The GNU C Library 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 GNU | |
13 | Lesser General Public License for more details. | |
14 | ||
15 | You should have received a copy of the GNU Lesser General Public | |
ab84e3ff PE |
16 | License along with the GNU C Library. If not, see |
17 | <http://www.gnu.org/licenses/>. */ | |
63d143a2 CM |
18 | |
19 | #include <sys/uio.h> | |
cde92624 | 20 | #include <_itoa.h> |
63d143a2 CM |
21 | |
22 | /* We will print the register dump in this format: | |
23 | ||
24 | R0: XXXXXXXXXXXXXXXX XXXXXXXXXXXXXXXX XXXXXXXXXXXXXXXX XXXXXXXXXXXXXXXX | |
25 | R4: XXXXXXXXXXXXXXXX XXXXXXXXXXXXXXXX XXXXXXXXXXXXXXXX XXXXXXXXXXXXXXXX | |
26 | R8: XXXXXXXXXXXXXXXX XXXXXXXXXXXXXXXX XXXXXXXXXXXXXXXX XXXXXXXXXXXXXXXX | |
27 | R12: XXXXXXXXXXXXXXXX XXXXXXXXXXXXXXXX XXXXXXXXXXXXXXXX XXXXXXXXXXXXXXXX | |
28 | R16: XXXXXXXXXXXXXXXX XXXXXXXXXXXXXXXX XXXXXXXXXXXXXXXX XXXXXXXXXXXXXXXX | |
29 | R20: XXXXXXXXXXXXXXXX XXXXXXXXXXXXXXXX XXXXXXXXXXXXXXXX XXXXXXXXXXXXXXXX | |
30 | R24: XXXXXXXXXXXXXXXX XXXXXXXXXXXXXXXX XXXXXXXXXXXXXXXX XXXXXXXXXXXXXXXX | |
31 | R28: XXXXXXXXXXXXXXXX XXXXXXXXXXXXXXXX XXXXXXXXXXXXXXXX XXXXXXXXXXXXXXXX | |
32 | R32: XXXXXXXXXXXXXXXX XXXXXXXXXXXXXXXX XXXXXXXXXXXXXXXX XXXXXXXXXXXXXXXX | |
33 | R36: XXXXXXXXXXXXXXXX XXXXXXXXXXXXXXXX XXXXXXXXXXXXXXXX XXXXXXXXXXXXXXXX | |
34 | R40: XXXXXXXXXXXXXXXX XXXXXXXXXXXXXXXX XXXXXXXXXXXXXXXX XXXXXXXXXXXXXXXX | |
35 | R44: XXXXXXXXXXXXXXXX XXXXXXXXXXXXXXXX XXXXXXXXXXXXXXXX XXXXXXXXXXXXXXXX | |
36 | R48: XXXXXXXXXXXXXXXX XXXXXXXXXXXXXXXX XXXXXXXXXXXXXXXX XXXXXXXXXXXXXXXX | |
37 | R52: XXXXXXXXXXXXXXXX TP: XXXXXXXXXXXXXXXX | |
38 | SP: XXXXXXXXXXXXXXXX LR: XXXXXXXXXXXXXXXX | |
39 | ||
40 | PC: XXXXXXXXXXXXXXXX ICS: X FAULTNUM: XX | |
41 | ||
42 | */ | |
43 | ||
44 | static void | |
45 | hexvalue (unsigned long int value, char *buf, size_t len) | |
46 | { | |
47 | char *cp = _itoa_word (value, buf + len, 16, 0); | |
48 | while (cp > buf) | |
49 | *--cp = '0'; | |
50 | } | |
51 | ||
52 | static void | |
53 | register_dump (int fd, mcontext_t *ctx) | |
54 | { | |
55 | char regs[59][16]; | |
56 | struct iovec iov[132]; | |
57 | size_t nr = 0; | |
58 | unsigned int i; | |
59 | ||
60 | #define ADD_STRING(str) \ | |
61 | iov[nr].iov_base = (char *) str; \ | |
62 | iov[nr].iov_len = strlen (str); \ | |
63 | ++nr | |
64 | #define ADD_MEM(str, len) \ | |
65 | iov[nr].iov_base = str; \ | |
66 | iov[nr].iov_len = len; \ | |
67 | ++nr | |
68 | ||
69 | /* Generate strings of register contents. */ | |
70 | for (i = 0; i < 56; ++i) | |
71 | hexvalue (ctx->gregs[i], regs[i], 16); | |
72 | hexvalue (ctx->pc, regs[56], 16); | |
73 | hexvalue (ctx->ics, regs[57], 1); | |
74 | hexvalue (ctx->faultnum, regs[58], 2); | |
75 | ||
76 | /* Generate the output. */ | |
77 | for (i = 0; i < 56;) | |
78 | { | |
79 | const char *prefixes[] = { | |
80 | "Register dump:\n\n R0: ", | |
81 | "\n R4: ", | |
82 | "\n R8: ", | |
83 | "\n R12: ", | |
84 | "\n R16: ", | |
85 | "\n R20: ", | |
86 | "\n R24: ", | |
87 | "\n R28: ", | |
88 | "\n R32: ", | |
89 | "\n R36: ", | |
90 | "\n R40: ", | |
91 | "\n R44: ", | |
92 | "\n R48: " | |
93 | }; | |
94 | ADD_STRING (prefixes[i / 4]); | |
95 | do | |
96 | { | |
97 | ADD_MEM (regs[i], 16); | |
98 | ADD_STRING (" "); | |
99 | } | |
100 | while (++i % 4); | |
101 | } | |
102 | ADD_STRING ("\n R52: "); | |
103 | ADD_MEM (regs[52], 16); | |
104 | ADD_STRING (" TP: "); | |
105 | ADD_MEM (regs[53], 16); | |
106 | ADD_STRING ("\n SP: "); | |
107 | ADD_MEM (regs[54], 16); | |
108 | ADD_STRING (" LR: "); | |
109 | ADD_MEM (regs[55], 16); | |
110 | ADD_STRING ("\n\n PC: "); | |
111 | ADD_MEM (regs[56], 16); | |
112 | ADD_STRING (" ICS: "); | |
113 | ADD_MEM (regs[57], 1); | |
114 | ADD_STRING (" FAULTNUM: "); | |
115 | ADD_MEM (regs[58], 2); | |
116 | ADD_STRING ("\n"); | |
117 | ||
118 | /* Write the stuff out. */ | |
119 | writev (fd, iov, nr); | |
120 | } | |
121 | ||
122 | ||
123 | #define REGISTER_DUMP register_dump (fd, &ctx->uc_mcontext) |