1 /* i386 specific core note handling.
2 Copyright (C) 2007-2010 Red Hat, Inc.
3 This file is part of Red Hat elfutils.
4
5 Red Hat elfutils is free software; you can redistribute it and/or modify
6 it under the terms of the GNU General Public License as published by the
7 Free Software Foundation; version 2 of the License.
8
9 Red Hat elfutils is distributed in the hope that it will be useful, but
10 WITHOUT ANY WARRANTY; without even the implied warranty of
11 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
12 General Public License for more details.
13
14 You should have received a copy of the GNU General Public License along
15 with Red Hat elfutils; if not, write to the Free Software Foundation,
16 Inc., 51 Franklin Street, Fifth Floor, Boston MA 02110-1301 USA.
17
18 Red Hat elfutils is an included package of the Open Invention Network.
19 An included package of the Open Invention Network is a package for which
20 Open Invention Network licensees cross-license their patents. No patent
21 license is granted, either expressly or impliedly, by designation as an
22 included package. Should you wish to participate in the Open Invention
23 Network licensing program, please visit www.openinventionnetwork.com
24 <http://www.openinventionnetwork.com>. */
25
26 #ifdef HAVE_CONFIG_H
27 # include <config.h>
28 #endif
29
30 #include <elf.h>
31 #include <inttypes.h>
32 #include <stddef.h>
33 #include <stdio.h>
34 #include <sys/time.h>
35
36 #define BACKEND i386_
37 #include "libebl_CPU.h"
38
39
40 static const Ebl_Register_Location prstatus_regs[] =
41 {
42 #define GR(at, n, dwreg) \
43 { .offset = at * 4, .regno = dwreg, .count = n, .bits = 32 }
44 #define SR(at, n, dwreg) \
45 { .offset = at * 4, .regno = dwreg, .count = n, .bits = 16, .pad = 2 }
46
47 GR (0, 1, 3), /* %ebx */
48 GR (1, 2, 1), /* %ecx-%edx */
49 GR (3, 2, 6), /* %esi-%edi */
50 GR (5, 1, 5), /* %ebp */
51 GR (6, 1, 0), /* %eax */
52 SR (7, 1, 43), /* %ds */
53 SR (8, 1, 40), /* %es */
54 SR (9, 1, 44), /* %fs */
55 SR (10, 1, 45), /* %gs */
56 /* 11, 1, orig_eax */
57 GR (12, 1, 8), /* %eip */
58 SR (13, 1, 41), /* %cs */
59 GR (14, 1, 9), /* eflags */
60 GR (15, 1, 4), /* %esp */
61 SR (16, 1, 42), /* %ss */
62
63 #undef GR
64 #undef SR
65 };
66 #define PRSTATUS_REGS_SIZE (17 * 4)
67
68 #define ULONG uint32_t
69 #define PID_T int32_t
70 #define UID_T uint16_t
71 #define GID_T uint16_t
72 #define ALIGN_ULONG 4
73 #define ALIGN_PID_T 4
74 #define ALIGN_UID_T 2
75 #define ALIGN_GID_T 2
76 #define TYPE_ULONG ELF_T_WORD
77 #define TYPE_PID_T ELF_T_SWORD
78 #define TYPE_UID_T ELF_T_HALF
79 #define TYPE_GID_T ELF_T_HALF
80
81 #define PRSTATUS_REGSET_ITEMS \
82 { \
83 .name = "orig_eax", .type = ELF_T_SWORD, .format = 'd', \
84 .offset = offsetof (struct EBLHOOK(prstatus), pr_reg) + (4 * 11), \
85 .group = "register" \
86 }
87
88 static const Ebl_Register_Location fpregset_regs[] =
89 {
90 { .offset = 0, .regno = 37, .count = 2, .bits = 32 }, /* fctrl-fstat */
91 { .offset = 7 * 4, .regno = 11, .count = 8, .bits = 80 }, /* stN */
92 };
93 #define FPREGSET_SIZE 108
94
95 static const Ebl_Register_Location prxfpreg_regs[] =
96 {
97 { .offset = 0, .regno = 37, .count = 2, .bits = 16 }, /* fctrl-fstat */
98 { .offset = 24, .regno = 39, .count = 1, .bits = 32 }, /* mxcsr */
99 { .offset = 32, .regno = 11, .count = 8, .bits = 80, .pad = 6 }, /* stN */
100 { .offset = 32 + 128, .regno = 21, .count = 8, .bits = 128 }, /* xmm */
101 };
102
103 #define EXTRA_NOTES \
104 EXTRA_REGSET (NT_PRXFPREG, 512, prxfpreg_regs) \
105 case NT_386_TLS: \
106 return tls_info (nhdr->n_descsz, regs_offset, nregloc, reglocs, \
107 nitems, items); \
108 EXTRA_NOTES_IOPERM
109
110 static const Ebl_Core_Item tls_items[] =
111 {
112 { .type = ELF_T_WORD, .offset = 0x0, .format = 'd', .name = "index" },
113 { .type = ELF_T_WORD, .offset = 0x4, .format = 'x', .name = "base" },
114 { .type = ELF_T_WORD, .offset = 0x8, .format = 'x', .name = "limit" },
115 { .type = ELF_T_WORD, .offset = 0xc, .format = 'x', .name = "flags" },
116 };
117
118 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)119 tls_info (GElf_Word descsz, GElf_Word *regs_offset,
120 size_t *nregloc, const Ebl_Register_Location **reglocs,
121 size_t *nitems, const Ebl_Core_Item **items)
122 {
123 if (descsz % 16 != 0)
124 return 0;
125
126 *regs_offset = 0;
127 *nregloc = 0;
128 *reglocs = NULL;
129 *nitems = sizeof tls_items / sizeof tls_items[0];
130 *items = tls_items;
131 return 1;
132 }
133
134 #include "x86_corenote.c"
135 #include "linux-core-note.c"
136