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
43static 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
91static 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
98static 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
113static 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
121static int
122tls_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