1 /* i386 specific core note handling.
2 Copyright (C) 2007-2010 Red Hat, Inc.
3 This file is part of elfutils.
4
5 This file is free software; you can redistribute it and/or modify
6 it under the terms of either
7
8 * the GNU Lesser General Public License as published by the Free
9 Software Foundation; either version 3 of the License, or (at
10 your option) any later version
11
12 or
13
14 * the GNU General Public License as published by the Free
15 Software Foundation; either version 2 of the License, or (at
16 your option) any later version
17
18 or both in parallel, as here.
19
20 elfutils is distributed in the hope that it will be useful, but
21 WITHOUT ANY WARRANTY; without even the implied warranty of
22 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
23 General Public License for more details.
24
25 You should have received copies of the GNU General Public License and
26 the GNU Lesser General Public License along with this program. If
27 not, see <http://www.gnu.org/licenses/>. */
28
29 #ifdef HAVE_CONFIG_H
30 # include <config.h>
31 #endif
32
33 #include <elf.h>
34 #include <inttypes.h>
35 #include <stddef.h>
36 #include <stdio.h>
37 #include <sys/time.h>
38
39 #define BACKEND i386_
40 #include "libebl_CPU.h"
41
42
43 static const Ebl_Register_Location prstatus_regs[] =
44 {
45 #define GR(at, n, dwreg) \
46 { .offset = at * 4, .regno = dwreg, .count = n, .bits = 32 }
47 #define SR(at, n, dwreg) \
48 { .offset = at * 4, .regno = dwreg, .count = n, .bits = 16, .pad = 2 }
49
50 GR (0, 1, 3), /* %ebx */
51 GR (1, 2, 1), /* %ecx-%edx */
52 GR (3, 2, 6), /* %esi-%edi */
53 GR (5, 1, 5), /* %ebp */
54 GR (6, 1, 0), /* %eax */
55 SR (7, 1, 43), /* %ds */
56 SR (8, 1, 40), /* %es */
57 SR (9, 1, 44), /* %fs */
58 SR (10, 1, 45), /* %gs */
59 /* 11, 1, orig_eax */
60 GR (12, 1, 8), /* %eip */
61 SR (13, 1, 41), /* %cs */
62 GR (14, 1, 9), /* eflags */
63 GR (15, 1, 4), /* %esp */
64 SR (16, 1, 42), /* %ss */
65
66 #undef GR
67 #undef SR
68 };
69 #define PRSTATUS_REGS_SIZE (17 * 4)
70
71 #define ULONG uint32_t
72 #define PID_T int32_t
73 #define UID_T uint16_t
74 #define GID_T uint16_t
75 #define ALIGN_ULONG 4
76 #define ALIGN_PID_T 4
77 #define ALIGN_UID_T 2
78 #define ALIGN_GID_T 2
79 #define TYPE_ULONG ELF_T_WORD
80 #define TYPE_PID_T ELF_T_SWORD
81 #define TYPE_UID_T ELF_T_HALF
82 #define TYPE_GID_T ELF_T_HALF
83
84 #define PRSTATUS_REGSET_ITEMS \
85 { \
86 .name = "orig_eax", .type = ELF_T_SWORD, .format = 'd', \
87 .offset = offsetof (struct EBLHOOK(prstatus), pr_reg) + (4 * 11), \
88 .group = "register" \
89 }
90
91 static const Ebl_Register_Location fpregset_regs[] =
92 {
93 { .offset = 0, .regno = 37, .count = 2, .bits = 32 }, /* fctrl-fstat */
94 { .offset = 7 * 4, .regno = 11, .count = 8, .bits = 80 }, /* stN */
95 };
96 #define FPREGSET_SIZE 108
97
98 static const Ebl_Register_Location prxfpreg_regs[] =
99 {
100 { .offset = 0, .regno = 37, .count = 2, .bits = 16 }, /* fctrl-fstat */
101 { .offset = 24, .regno = 39, .count = 1, .bits = 32 }, /* mxcsr */
102 { .offset = 32, .regno = 11, .count = 8, .bits = 80, .pad = 6 }, /* stN */
103 { .offset = 32 + 128, .regno = 21, .count = 8, .bits = 128 }, /* xmm */
104 };
105
106 #define EXTRA_NOTES \
107 EXTRA_REGSET (NT_PRXFPREG, 512, prxfpreg_regs) \
108 case NT_386_TLS: \
109 return tls_info (nhdr->n_descsz, regs_offset, nregloc, reglocs, \
110 nitems, items); \
111 EXTRA_NOTES_IOPERM
112
113 static const Ebl_Core_Item tls_items[] =
114 {
115 { .type = ELF_T_WORD, .offset = 0x0, .format = 'd', .name = "index" },
116 { .type = ELF_T_WORD, .offset = 0x4, .format = 'x', .name = "base" },
117 { .type = ELF_T_WORD, .offset = 0x8, .format = 'x', .name = "limit" },
118 { .type = ELF_T_WORD, .offset = 0xc, .format = 'x', .name = "flags" },
119 };
120
121 static int
tls_info(GElf_Word descsz,GElf_Word * regs_offset,size_t * nregloc,const Ebl_Register_Location ** reglocs,size_t * nitems,const Ebl_Core_Item ** items)122 tls_info (GElf_Word descsz, GElf_Word *regs_offset,
123 size_t *nregloc, const Ebl_Register_Location **reglocs,
124 size_t *nitems, const Ebl_Core_Item **items)
125 {
126 if (descsz % 16 != 0)
127 return 0;
128
129 *regs_offset = 0;
130 *nregloc = 0;
131 *reglocs = NULL;
132 *nitems = sizeof tls_items / sizeof tls_items[0];
133 *items = tls_items;
134 return 1;
135 }
136
137 #include "x86_corenote.c"
138 #include "linux-core-note.c"
139