diff options
Diffstat (limited to 'REORG.TODO/sysdeps/powerpc/dl-procinfo.h')
| -rw-r--r-- | REORG.TODO/sysdeps/powerpc/dl-procinfo.h | 185 |
1 files changed, 185 insertions, 0 deletions
diff --git a/REORG.TODO/sysdeps/powerpc/dl-procinfo.h b/REORG.TODO/sysdeps/powerpc/dl-procinfo.h new file mode 100644 index 0000000000..216d20fbff --- /dev/null +++ b/REORG.TODO/sysdeps/powerpc/dl-procinfo.h @@ -0,0 +1,185 @@ +/* Processor capability information handling macros. PowerPC version. + Copyright (C) 2005-2017 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 + <http://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 15 + +#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 + +static inline const char * +__attribute__ ((unused)) +_dl_hwcap_string (int idx) +{ + return GLRO(dl_powerpc_cap_flags)[idx]; +} + +static inline int +__attribute__ ((unused)) +_dl_string_hwcap (const char *str) +{ + for (int i = 0; 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, "power", 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; + 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 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; + } + default: + /* This should not happen. */ + return -1; + } + _dl_printf ("\n"); + return 0; +} +#endif + +#endif /* dl-procinfo.h */ |