summaryrefslogtreecommitdiff
path: root/sysdeps/powerpc/dl-procinfo.h
blob: 0bf935385a8e77bedc20dff0d03d47b1506f6aaa (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
/* Processor capability information handling macros.  PowerPC version.
   Copyright (C) 2005, 2006 Free Software Foundation, Inc.
   This file is part of the GNU C Library.

   The GNU C Library is free software; you can redistribute it and/or
   modify it under the terms of the GNU Lesser General Public
   License as published by the Free Software Foundation; either
   version 2.1 of the License, or (at your option) any later version.

   The GNU C Library is distributed in the hope that it will be useful,
   but WITHOUT ANY WARRANTY; without even the implied warranty of
   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
   Lesser General Public License for more details.

   You should have received a copy of the GNU Lesser General Public
   License along with the GNU C Library; if not, write to the Free
   Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
   02111-1307 USA.  */

#ifndef _DL_PROCINFO_H
#define _DL_PROCINFO_H	1

#include <ldsodefs.h>
#include <sysdep.h>		/* This defines the PPC_FEATURE_* macros.  */

/* There are 20 bits used, but they are bits 12..31.  */
#define _DL_HWCAP_FIRST		9
#define _DL_HWCAP_COUNT		32

/* These bits influence library search.  */
#define HWCAP_IMPORTANT		(PPC_FEATURE_HAS_ALTIVEC \
				+ PPC_FEATURE_HAS_DFP)

#define _DL_PLATFORMS_COUNT	7

#define _DL_FIRST_PLATFORM      32
/* Mask to filter out platforms.  */
#define _DL_HWCAP_PLATFORM      (((1ULL << _DL_PLATFORMS_COUNT) - 1) \
                                 << _DL_FIRST_PLATFORM)

/* Platform bits (relative to _DL_FIRST_PLATFORM).  */
#define PPC_PLATFORM_POWER4		0
#define PPC_PLATFORM_PPC970		1
#define PPC_PLATFORM_POWER5		2
#define PPC_PLATFORM_POWER5_PLUS	3
#define PPC_PLATFORM_POWER6		4
#define PPC_PLATFORM_CELL_BE		5
#define PPC_PLATFORM_POWER6X		6

static inline const char *
__attribute__ ((unused))
_dl_hwcap_string (int idx)
{
  return GLRO(dl_powerpc_cap_flags)[idx - _DL_HWCAP_FIRST];
}

static inline const char *
__attribute__ ((unused))
_dl_platform_string (int idx)
{
  return GLRO(dl_powerpc_platforms)[idx - _DL_FIRST_PLATFORM];
}

static inline int
__attribute__ ((unused))
_dl_string_hwcap (const char *str)
{
  for (int i = _DL_HWCAP_FIRST; i < _DL_HWCAP_COUNT; ++i)
    if (strcmp (str, _dl_hwcap_string (i)) == 0)
      return i;
  return -1;
}

static inline int
__attribute__ ((unused, always_inline))
_dl_string_platform (const char *str)
{
  if (str == NULL)
    return -1;

  if (strncmp (str, GLRO(dl_powerpc_platforms)[PPC_PLATFORM_POWER4], 5) == 0)
    {
      int ret;
      str += 5;
      switch (*str)
	{
	case '4':
	  ret = _DL_FIRST_PLATFORM + PPC_PLATFORM_POWER4;
	  break;
	case '5':
	  ret = _DL_FIRST_PLATFORM + PPC_PLATFORM_POWER5;
	  if (str[1] == '+')
	    {
	      ret = _DL_FIRST_PLATFORM + PPC_PLATFORM_POWER5_PLUS;
	      ++str;
	    }
	  break;
	case '6':
	  ret = _DL_FIRST_PLATFORM + PPC_PLATFORM_POWER6;
	  if (str[1] == 'x')
	    {
	      ret = _DL_FIRST_PLATFORM + PPC_PLATFORM_POWER6X;
	      ++str;
	    }
	  break;
	default:
	  return -1;
	}
      if (str[1] == '\0')
	return ret;
    }
  else if (strncmp (str, GLRO(dl_powerpc_platforms)[PPC_PLATFORM_PPC970],
		    3) == 0)
    {
      if (strcmp (str + 3, GLRO(dl_powerpc_platforms)[PPC_PLATFORM_PPC970]
			   + 3) == 0)
	return _DL_FIRST_PLATFORM + PPC_PLATFORM_PPC970;
      else if (strcmp (str + 3,
		       GLRO(dl_powerpc_platforms)[PPC_PLATFORM_CELL_BE] + 3)
	       == 0)
	return _DL_FIRST_PLATFORM + PPC_PLATFORM_CELL_BE;
    }

  return -1;
}

#ifdef IS_IN_rtld
static inline int
__attribute__ ((unused))
_dl_procinfo (int word)
{
  _dl_printf ("AT_HWCAP:       ");

  for (int i = _DL_HWCAP_FIRST; i < _DL_HWCAP_COUNT; ++i)
    if (word & (1 << i))
      _dl_printf (" %s", _dl_hwcap_string (i));

  _dl_printf ("\n");

  return 0;
}
#endif

#endif /* dl-procinfo.h */