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
40static 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
88static 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
95static 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
110static 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
118static int
119tls_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