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/* Processor capability information handling macros. PowerPC version.
Copyright (C) 2005-2024 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, see
<https://www.gnu.org/licenses/>. */
#ifndef _DL_PROCINFO_H
#define _DL_PROCINFO_H 1
#include <ldsodefs.h>
#include <sysdep.h> /* This defines the PPC_FEATURE[2]_* macros. */
/* The total number of available bits (including those prior to
_DL_HWCAP_FIRST). Some of these bits might not be used. */
#define _DL_HWCAP_COUNT 64
/* Features started at bit 31 and decremented as new features were added. */
#define _DL_HWCAP_LAST 31
/* AT_HWCAP2 features started at bit 31 and decremented as new features were
added. HWCAP2 feature bits start at bit 0. */
#define _DL_HWCAP2_LAST 31
/* These bits influence library search. */
#define HWCAP_IMPORTANT (PPC_FEATURE_HAS_ALTIVEC \
+ PPC_FEATURE_HAS_DFP)
#define _DL_PLATFORMS_COUNT 16
#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
#define PPC_PLATFORM_POWER7 7
#define PPC_PLATFORM_PPCA2 8
#define PPC_PLATFORM_PPC405 9
#define PPC_PLATFORM_PPC440 10
#define PPC_PLATFORM_PPC464 11
#define PPC_PLATFORM_PPC476 12
#define PPC_PLATFORM_POWER8 13
#define PPC_PLATFORM_POWER9 14
#define PPC_PLATFORM_POWER10 15
static inline const char *
__attribute__ ((unused))
_dl_hwcap_string (int idx)
{
return GLRO(dl_powerpc_cap_flags)[idx];
}
static inline int
__attribute__ ((unused, always_inline))
_dl_string_platform (const char *str)
{
if (str == NULL)
return -1;
if (strncmp (str, "power", 5) == 0)
{
int ret;
str += 5;
switch (*str)
{
case '1':
if (str[1] == '0')
{
ret = _DL_FIRST_PLATFORM + PPC_PLATFORM_POWER10;
str++;
}
else
return -1;
break;
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;
case '7':
ret = _DL_FIRST_PLATFORM + PPC_PLATFORM_POWER7;
break;
case '8':
ret = _DL_FIRST_PLATFORM + PPC_PLATFORM_POWER8;
break;
case '9':
ret = _DL_FIRST_PLATFORM + PPC_PLATFORM_POWER9;
break;
default:
return -1;
}
if (str[1] == '\0')
return ret;
}
else if (strncmp (str, "ppc", 3) == 0)
{
if (strcmp (str + 3, "970") == 0)
return _DL_FIRST_PLATFORM + PPC_PLATFORM_PPC970;
else if (strcmp (str + 3, "-cell-be") == 0)
return _DL_FIRST_PLATFORM + PPC_PLATFORM_CELL_BE;
else if (strcmp (str + 3, "a2") == 0)
return _DL_FIRST_PLATFORM + PPC_PLATFORM_PPCA2;
else if (strcmp (str + 3, "405") == 0)
return _DL_FIRST_PLATFORM + PPC_PLATFORM_PPC405;
else if (strcmp (str + 3, "440") == 0)
return _DL_FIRST_PLATFORM + PPC_PLATFORM_PPC440;
else if (strcmp (str + 3, "464") == 0)
return _DL_FIRST_PLATFORM + PPC_PLATFORM_PPC464;
else if (strcmp (str + 3, "476") == 0)
return _DL_FIRST_PLATFORM + PPC_PLATFORM_PPC476;
}
return -1;
}
#if IS_IN (rtld)
static inline void
cache_geometry (const char * name, unsigned long int geometry)
{
unsigned long int assocty, line;
_dl_printf ("%s", name);
line = geometry & 0xffff;
assocty = (geometry >> 16) & 0xffff;
if (line == 0)
_dl_printf ("Unknown line size, ");
else
_dl_printf ("%luB line size, ", line);
switch (assocty)
{
case 0:
_dl_printf ("Unknown associativity");
break;
case 1:
_dl_printf ("Directly mapped");
break;
case 0xffff:
_dl_printf ("Fully associative");
break;
default:
_dl_printf ("%lu-way set associative", assocty);
}
}
static inline int
__attribute__ ((unused))
_dl_procinfo (unsigned int type, unsigned long int word)
{
switch(type)
{
case AT_HWCAP:
_dl_printf ("AT_HWCAP: ");
for (int i = 0; i <= _DL_HWCAP_LAST; ++i)
if (word & (1 << i))
_dl_printf (" %s", _dl_hwcap_string (i));
break;
case AT_HWCAP2:
{
unsigned int offset = _DL_HWCAP_LAST + 1;
_dl_printf ("AT_HWCAP2: ");
/* We have to go through them all because the kernel added the
AT_HWCAP2 features starting with the high bits. */
for (int i = 0; i <= _DL_HWCAP2_LAST; ++i)
if (word & (1 << i))
_dl_printf (" %s", _dl_hwcap_string (offset + i));
break;
}
case AT_L1I_CACHEGEOMETRY:
{
cache_geometry ("AT_L1I_CACHEGEOMETRY: ", word);
break;
}
case AT_L1D_CACHEGEOMETRY:
{
cache_geometry ("AT_L1D_CACHEGEOMETRY: ", word);
break;
}
case AT_L2_CACHEGEOMETRY:
{
cache_geometry ("AT_L2_CACHEGEOMETRY: ", word);
break;
}
case AT_L3_CACHEGEOMETRY:
{
cache_geometry ("AT_L3_CACHEGEOMETRY: ", word);
break;
}
default:
/* Fallback to generic output mechanism. */
return -1;
}
_dl_printf ("\n");
return 0;
}
#endif
#endif /* dl-procinfo.h */
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