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| author | Alistair Francis <alistair.francis@wdc.com> | 2019-06-21 11:31:56 -0700 |
|---|---|---|
| committer | Alistair Francis <alistair.francis@wdc.com> | 2020-04-25 19:16:11 -0700 |
| commit | a756d0ca693b1bbc24c87f6d58b87cfb6461efdc (patch) | |
| tree | 592ac1364044137606b777e1d57ed16ec26a1478 /sysdeps/unix/sysv/linux/riscv/bits/time64.h | |
| parent | 8439db9276c677fbc11f46dbdf9b2388f5f1de03 (diff) | |
| download | glibc-a756d0ca693b1bbc24c87f6d58b87cfb6461efdc.tar.gz | |
RISC-V: Use 64-bit time_t and off_t for RV32 and RV64
Using the original glibc headers under bits/ let's make small
modifications to use 64-bit time_t and off_t for both RV32 and RV64.
For the typesizes.h, here are justifications for the changes from the
generic version (based on Arnd's very helpful feedback):
- All the !__USE_FILE_OFFSET64 types (__off_t, __ino_t, __rlim_t, ...) are
changed to match the 64-bit replacements.
- __time_t is defined to 64 bit, but no __time64_t is added. This makes sense
as we don't have the time64 support for other 32-bit architectures yet, and
it will be easy to change when that happens.
- __suseconds_t is 64-bit. This matches what we use the kernel ABI for the
few drivers that are relying on 'struct timeval' input arguments in
ioctl, as well as the adjtimex system call. It means that timeval has to
be defined without the padding, unlike timespec, which needs padding.
Diffstat (limited to 'sysdeps/unix/sysv/linux/riscv/bits/time64.h')
| -rw-r--r-- | sysdeps/unix/sysv/linux/riscv/bits/time64.h | 36 |
1 files changed, 36 insertions, 0 deletions
diff --git a/sysdeps/unix/sysv/linux/riscv/bits/time64.h b/sysdeps/unix/sysv/linux/riscv/bits/time64.h new file mode 100644 index 0000000000..7ba0dd1cfd --- /dev/null +++ b/sysdeps/unix/sysv/linux/riscv/bits/time64.h @@ -0,0 +1,36 @@ +/* bits/time64.h -- underlying types for __time64_t. Generic version. + Copyright (C) 2019-2020 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 _BITS_TYPES_H +# error "Never include <bits/time64.h> directly; use <sys/types.h> instead." +#endif + +#ifndef _BITS_TIME64_H +#define _BITS_TIME64_H 1 + +/* Define __TIME64_T_TYPE so that it is always a 64-bit type. */ + +#if __WORDSIZE == 64 +/* If we already have 64-bit time type then use it. */ +# define __TIME64_T_TYPE __TIME_T_TYPE +#else +/* Define a 64-bit time type alongsize the 32-bit one. */ +# define __TIME64_T_TYPE __SQUAD_TYPE +#endif + +#endif /* bits/time64.h */ |