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63d143a2 CM |
1 | /* Copyright (C) 2011 Free Software Foundation, Inc. |
2 | This file is part of the GNU C Library. | |
3 | Contributed by Chris Metcalf <cmetcalf@tilera.com>, 2011. | |
4 | Based on work contributed by Ulrich Drepper <drepper@cygnus.com>, 1998. | |
5 | ||
6 | The GNU C Library is free software; you can redistribute it and/or | |
7 | modify it under the terms of the GNU Lesser General Public | |
8 | License as published by the Free Software Foundation; either | |
9 | version 2.1 of the License, or (at your option) any later version. | |
10 | ||
11 | The GNU C Library 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 GNU | |
14 | Lesser General Public License for more details. | |
15 | ||
16 | You should have received a copy of the GNU Lesser General Public | |
ab84e3ff PE |
17 | License along with the GNU C Library. If not, see |
18 | <http://www.gnu.org/licenses/>. */ | |
63d143a2 CM |
19 | |
20 | #include <sys/uio.h> | |
cde92624 | 21 | #include <_itoa.h> |
63d143a2 CM |
22 | |
23 | /* We will print the register dump in this format: | |
24 | ||
25 | R0: XXXXXXXX XXXXXXXX XXXXXXXX XXXXXXXX XXXXXXXX XXXXXXXX XXXXXXXX XXXXXXXX | |
26 | R8: XXXXXXXX XXXXXXXX XXXXXXXX XXXXXXXX XXXXXXXX XXXXXXXX XXXXXXXX XXXXXXXX | |
27 | R16: XXXXXXXX XXXXXXXX XXXXXXXX XXXXXXXX XXXXXXXX XXXXXXXX XXXXXXXX XXXXXXXX | |
28 | R24: XXXXXXXX XXXXXXXX XXXXXXXX XXXXXXXX XXXXXXXX XXXXXXXX XXXXXXXX XXXXXXXX | |
29 | R32: XXXXXXXX XXXXXXXX XXXXXXXX XXXXXXXX XXXXXXXX XXXXXXXX XXXXXXXX XXXXXXXX | |
30 | R40: XXXXXXXX XXXXXXXX XXXXXXXX XXXXXXXX XXXXXXXX XXXXXXXX XXXXXXXX XXXXXXXX | |
31 | R48: XXXXXXXX XXXXXXXX XXXXXXXX XXXXXXXX | |
32 | R52: XXXXXXXX TP: XXXXXXXX SP: XXXXXXXX LR: XXXXXXXX | |
33 | ||
34 | PC: XXXXXXXX ICS: X FAULTNUM: XX | |
35 | ||
36 | */ | |
37 | ||
38 | static void | |
39 | hexvalue (unsigned long int value, char *buf, size_t len) | |
40 | { | |
41 | char *cp = _itoa_word (value, buf + len, 16, 0); | |
42 | while (cp > buf) | |
43 | *--cp = '0'; | |
44 | } | |
45 | ||
46 | static void | |
47 | register_dump (int fd, mcontext_t *ctx) | |
48 | { | |
49 | char regs[59][8]; | |
50 | struct iovec iov[143]; | |
51 | size_t nr = 0; | |
52 | unsigned int i; | |
53 | ||
54 | #define ADD_STRING(str) \ | |
55 | iov[nr].iov_base = (char *) str; \ | |
56 | iov[nr].iov_len = strlen (str); \ | |
57 | ++nr | |
58 | #define ADD_MEM(str, len) \ | |
59 | iov[nr].iov_base = str; \ | |
60 | iov[nr].iov_len = len; \ | |
61 | ++nr | |
62 | ||
63 | /* Generate strings of register contents. */ | |
64 | for (i = 0; i < 56; ++i) | |
65 | hexvalue (ctx->gregs[i], regs[i], 8); | |
66 | hexvalue (ctx->pc, regs[56], 8); | |
67 | hexvalue (ctx->ics, regs[57], 1); | |
68 | hexvalue (ctx->faultnum, regs[58], 2); | |
69 | ||
70 | /* Generate the output. */ | |
71 | for (i = 0; i < 52;) | |
72 | { | |
73 | const char *prefixes[] = { | |
74 | "Register dump:\n\n R0: ", | |
75 | "\n R8: ", | |
76 | "\n R16: ", | |
77 | "\n R24: ", | |
78 | "\n R32: ", | |
79 | "\n R40: ", | |
80 | "\n R48: " | |
81 | }; | |
82 | ADD_STRING (prefixes[i / 8]); | |
83 | do | |
84 | { | |
85 | ADD_MEM (regs[i], 8); | |
86 | ADD_STRING (" "); | |
87 | } | |
88 | while (++i % 8 && i < 52); | |
89 | } | |
90 | ADD_STRING ("\n R52: "); | |
91 | ADD_MEM (regs[52], 8); | |
92 | ADD_STRING (" TP: "); | |
93 | ADD_MEM (regs[53], 8); | |
94 | ADD_STRING (" SP: "); | |
95 | ADD_MEM (regs[54], 8); | |
96 | ADD_STRING (" LR: "); | |
97 | ADD_MEM (regs[55], 8); | |
98 | ADD_STRING ("\n\n PC: "); | |
99 | ADD_MEM (regs[56], 8); | |
100 | ADD_STRING (" ICS: "); | |
101 | ADD_MEM (regs[57], 1); | |
102 | ADD_STRING (" FAULTNUM: "); | |
103 | ADD_MEM (regs[58], 2); | |
104 | ADD_STRING ("\n"); | |
105 | ||
106 | /* Write the stuff out. */ | |
107 | writev (fd, iov, nr); | |
108 | } | |
109 | ||
110 | ||
111 | #define REGISTER_DUMP register_dump (fd, &ctx->uc_mcontext) |