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author | Zack Weinberg <zackw@panix.com> | 2017-06-08 15:39:03 -0400 |
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committer | Zack Weinberg <zackw@panix.com> | 2017-06-08 15:39:03 -0400 |
commit | 5046dbb4a7eba5eccfd258f92f4735c9ffc8d069 (patch) | |
tree | 4470480d904b65cf14ca524f96f79eca818c3eaf /REORG.TODO/sysdeps/unix/sysv/linux/aarch64/cpu-features.h | |
parent | 199fc19d3aaaf57944ef036e15904febe877fc93 (diff) | |
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Prepare for radical source tree reorganization.zack/build-layout-experiment
All top-level files and directories are moved into a temporary storage
directory, REORG.TODO, except for files that will certainly still
exist in their current form at top level when we're done (COPYING,
COPYING.LIB, LICENSES, NEWS, README), all old ChangeLog files (which
are moved to the new directory OldChangeLogs, instead), and the
generated file INSTALL (which is just deleted; in the new order, there
will be no generated files checked into version control).
Diffstat (limited to 'REORG.TODO/sysdeps/unix/sysv/linux/aarch64/cpu-features.h')
-rw-r--r-- | REORG.TODO/sysdeps/unix/sysv/linux/aarch64/cpu-features.h | 49 |
1 files changed, 49 insertions, 0 deletions
diff --git a/REORG.TODO/sysdeps/unix/sysv/linux/aarch64/cpu-features.h b/REORG.TODO/sysdeps/unix/sysv/linux/aarch64/cpu-features.h new file mode 100644 index 0000000000..c92b650984 --- /dev/null +++ b/REORG.TODO/sysdeps/unix/sysv/linux/aarch64/cpu-features.h @@ -0,0 +1,49 @@ +/* Initialize CPU feature data. AArch64 version. + This file is part of the GNU C Library. + Copyright (C) 2017 Free Software Foundation, Inc. + + 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 _CPU_FEATURES_AARCH64_H +#define _CPU_FEATURES_AARCH64_H + +#include <stdint.h> + +#define MIDR_PARTNUM_SHIFT 4 +#define MIDR_PARTNUM_MASK (0xfff << MIDR_PARTNUM_SHIFT) +#define MIDR_PARTNUM(midr) \ + (((midr) & MIDR_PARTNUM_MASK) >> MIDR_PARTNUM_SHIFT) +#define MIDR_ARCHITECTURE_SHIFT 16 +#define MIDR_ARCHITECTURE_MASK (0xf << MIDR_ARCHITECTURE_SHIFT) +#define MIDR_ARCHITECTURE(midr) \ + (((midr) & MIDR_ARCHITECTURE_MASK) >> MIDR_ARCHITECTURE_SHIFT) +#define MIDR_VARIANT_SHIFT 20 +#define MIDR_VARIANT_MASK (0xf << MIDR_VARIANT_SHIFT) +#define MIDR_VARIANT(midr) \ + (((midr) & MIDR_VARIANT_MASK) >> MIDR_VARIANT_SHIFT) +#define MIDR_IMPLEMENTOR_SHIFT 24 +#define MIDR_IMPLEMENTOR_MASK (0xff << MIDR_IMPLEMENTOR_SHIFT) +#define MIDR_IMPLEMENTOR(midr) \ + (((midr) & MIDR_IMPLEMENTOR_MASK) >> MIDR_IMPLEMENTOR_SHIFT) + +#define IS_THUNDERX(midr) (MIDR_IMPLEMENTOR(midr) == 'C' \ + && MIDR_PARTNUM(midr) == 0x0a1) + +struct cpu_features +{ + uint64_t midr_el1; +}; + +#endif /* _CPU_FEATURES_AARCH64_H */ |