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Diffstat (limited to 'sysdeps/powerpc/dl-procinfo.h')
| -rw-r--r-- | sysdeps/powerpc/dl-procinfo.h | 144 |
1 files changed, 144 insertions, 0 deletions
diff --git a/sysdeps/powerpc/dl-procinfo.h b/sysdeps/powerpc/dl-procinfo.h new file mode 100644 index 0000000000..0bf935385a --- /dev/null +++ b/sysdeps/powerpc/dl-procinfo.h @@ -0,0 +1,144 @@ +/* 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 */ |