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1ea0511456
The following three changes have been added to provide initial Power11 support.
1. Add the directories to hold Power11 files.
2. Add support to select Power11 libraries based on AT_PLATFORM.
3. Let submachine=power11 be set automatically.
Reviewed-by: Florian Weimer <fweimer@redhat.com>
Reviewed-by: Peter Bergner <bergner@linux.ibm.com>
265 lines
6.9 KiB
C
265 lines
6.9 KiB
C
/* Processor capability information handling macros. PowerPC version.
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Copyright (C) 2005-2024 Free Software Foundation, Inc.
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This file is part of the GNU C Library.
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The GNU C Library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Lesser General Public
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License as published by the Free Software Foundation; either
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version 2.1 of the License, or (at your option) any later version.
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The GNU C Library is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public
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License along with the GNU C Library. If not, see
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<https://www.gnu.org/licenses/>. */
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#ifndef _DL_PROCINFO_H
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#define _DL_PROCINFO_H 1
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#include <ldsodefs.h>
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#include <sysdep.h> /* This defines the PPC_FEATURE[2]_* macros. */
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/* Feature masks are all 32-bits in size. */
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#define _DL_HWCAP_SIZE 32
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/* AT_HWCAP2 feature strings follow the AT_HWCAP feature strings. */
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#define _DL_HWCAP2_OFFSET _DL_HWCAP_SIZE
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/* AT_HWCAP3 feature strings follow the AT_HWCAP2 feature strings. */
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#define _DL_HWCAP3_OFFSET (_DL_HWCAP2_OFFSET + _DL_HWCAP_SIZE)
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/* AT_HWCAP4 feature strings follow the AT_HWCAP3 feature strings. */
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#define _DL_HWCAP4_OFFSET (_DL_HWCAP3_OFFSET + _DL_HWCAP_SIZE)
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/* These bits influence library search. */
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#define HWCAP_IMPORTANT (PPC_FEATURE_HAS_ALTIVEC \
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+ PPC_FEATURE_HAS_DFP)
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#define _DL_PLATFORMS_COUNT 17
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#define _DL_FIRST_PLATFORM 32
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/* Mask to filter out platforms. */
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#define _DL_HWCAP_PLATFORM (((1ULL << _DL_PLATFORMS_COUNT) - 1) \
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<< _DL_FIRST_PLATFORM)
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/* Platform bits (relative to _DL_FIRST_PLATFORM). */
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#define PPC_PLATFORM_POWER4 0
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#define PPC_PLATFORM_PPC970 1
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#define PPC_PLATFORM_POWER5 2
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#define PPC_PLATFORM_POWER5_PLUS 3
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#define PPC_PLATFORM_POWER6 4
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#define PPC_PLATFORM_CELL_BE 5
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#define PPC_PLATFORM_POWER6X 6
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#define PPC_PLATFORM_POWER7 7
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#define PPC_PLATFORM_PPCA2 8
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#define PPC_PLATFORM_PPC405 9
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#define PPC_PLATFORM_PPC440 10
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#define PPC_PLATFORM_PPC464 11
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#define PPC_PLATFORM_PPC476 12
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#define PPC_PLATFORM_POWER8 13
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#define PPC_PLATFORM_POWER9 14
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#define PPC_PLATFORM_POWER10 15
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#define PPC_PLATFORM_POWER11 16
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static inline const char *
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__attribute__ ((unused))
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_dl_hwcap_string (int idx)
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{
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return GLRO(dl_powerpc_cap_flags)[idx];
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}
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static inline int
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__attribute__ ((unused, always_inline))
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_dl_string_platform (const char *str)
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{
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if (str == NULL)
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return -1;
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if (strncmp (str, "power", 5) == 0)
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{
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int ret;
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str += 5;
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switch (*str)
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{
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case '1':
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if (str[1] == '0')
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{
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ret = _DL_FIRST_PLATFORM + PPC_PLATFORM_POWER10;
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str++;
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}
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else if (str[1] == '1')
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{
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ret = _DL_FIRST_PLATFORM + PPC_PLATFORM_POWER11;
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str++;
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}
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else
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return -1;
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break;
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case '4':
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ret = _DL_FIRST_PLATFORM + PPC_PLATFORM_POWER4;
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break;
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case '5':
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ret = _DL_FIRST_PLATFORM + PPC_PLATFORM_POWER5;
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if (str[1] == '+')
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{
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ret = _DL_FIRST_PLATFORM + PPC_PLATFORM_POWER5_PLUS;
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++str;
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}
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break;
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case '6':
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ret = _DL_FIRST_PLATFORM + PPC_PLATFORM_POWER6;
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if (str[1] == 'x')
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{
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ret = _DL_FIRST_PLATFORM + PPC_PLATFORM_POWER6X;
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++str;
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}
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break;
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case '7':
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ret = _DL_FIRST_PLATFORM + PPC_PLATFORM_POWER7;
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break;
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case '8':
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ret = _DL_FIRST_PLATFORM + PPC_PLATFORM_POWER8;
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break;
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case '9':
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ret = _DL_FIRST_PLATFORM + PPC_PLATFORM_POWER9;
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break;
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default:
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return -1;
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}
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if (str[1] == '\0')
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return ret;
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}
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else if (strncmp (str, "ppc", 3) == 0)
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{
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if (strcmp (str + 3, "970") == 0)
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return _DL_FIRST_PLATFORM + PPC_PLATFORM_PPC970;
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else if (strcmp (str + 3, "-cell-be") == 0)
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return _DL_FIRST_PLATFORM + PPC_PLATFORM_CELL_BE;
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else if (strcmp (str + 3, "a2") == 0)
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return _DL_FIRST_PLATFORM + PPC_PLATFORM_PPCA2;
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else if (strcmp (str + 3, "405") == 0)
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return _DL_FIRST_PLATFORM + PPC_PLATFORM_PPC405;
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else if (strcmp (str + 3, "440") == 0)
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return _DL_FIRST_PLATFORM + PPC_PLATFORM_PPC440;
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else if (strcmp (str + 3, "464") == 0)
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return _DL_FIRST_PLATFORM + PPC_PLATFORM_PPC464;
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else if (strcmp (str + 3, "476") == 0)
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return _DL_FIRST_PLATFORM + PPC_PLATFORM_PPC476;
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}
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return -1;
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}
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#if IS_IN (rtld)
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static inline void
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cache_geometry (const char * name, unsigned long int geometry)
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{
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unsigned long int assocty, line;
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_dl_printf ("%s", name);
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line = geometry & 0xffff;
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assocty = (geometry >> 16) & 0xffff;
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if (line == 0)
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_dl_printf ("Unknown line size, ");
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else
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_dl_printf ("%luB line size, ", line);
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switch (assocty)
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{
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case 0:
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_dl_printf ("Unknown associativity");
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break;
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case 1:
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_dl_printf ("Directly mapped");
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break;
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case 0xffff:
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_dl_printf ("Fully associative");
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break;
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default:
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_dl_printf ("%lu-way set associative", assocty);
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}
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}
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static inline int
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__attribute__ ((unused))
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_dl_procinfo (unsigned int type, unsigned long int word)
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{
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switch(type)
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{
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case AT_HWCAP:
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_dl_printf ("AT_HWCAP: ");
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for (int i = 0; i < _DL_HWCAP_SIZE; ++i)
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if (word & (1 << i))
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_dl_printf (" %s", _dl_hwcap_string (i));
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break;
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case AT_HWCAP2:
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{
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_dl_printf ("AT_HWCAP2: ");
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/* We have to go through them all because the kernel added the
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AT_HWCAP2 features starting with the high bits. */
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for (int i = 0; i < _DL_HWCAP_SIZE; ++i)
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if (word & (1 << i))
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_dl_printf (" %s", _dl_hwcap_string (_DL_HWCAP2_OFFSET + i));
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break;
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}
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case AT_HWCAP3:
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{
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_dl_printf ("AT_HWCAP3: ");
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/* We have to go through them all because the kernel added the
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AT_HWCAP3 features starting with the high bits. */
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for (int i = 0; i < _DL_HWCAP_SIZE; ++i)
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if (word & (1 << i))
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_dl_printf (" %s", _dl_hwcap_string (_DL_HWCAP3_OFFSET + i));
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break;
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}
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case AT_HWCAP4:
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{
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_dl_printf ("AT_HWCAP4: ");
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/* We have to go through them all because the kernel added the
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AT_HWCAP4 features starting with the high bits. */
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for (int i = 0; i <= _DL_HWCAP_SIZE; ++i)
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if (word & (1 << i))
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_dl_printf (" %s", _dl_hwcap_string (_DL_HWCAP4_OFFSET + i));
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break;
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}
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case AT_L1I_CACHEGEOMETRY:
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{
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cache_geometry ("AT_L1I_CACHEGEOMETRY: ", word);
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break;
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}
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case AT_L1D_CACHEGEOMETRY:
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{
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cache_geometry ("AT_L1D_CACHEGEOMETRY: ", word);
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break;
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}
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case AT_L2_CACHEGEOMETRY:
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{
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cache_geometry ("AT_L2_CACHEGEOMETRY: ", word);
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break;
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}
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case AT_L3_CACHEGEOMETRY:
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{
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cache_geometry ("AT_L3_CACHEGEOMETRY: ", word);
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break;
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}
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default:
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/* Fallback to generic output mechanism. */
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return -1;
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}
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_dl_printf ("\n");
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return 0;
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}
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#endif
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#endif /* dl-procinfo.h */
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