diff options
| -rw-r--r-- | libc/sysdeps/linux/or1k/bits/atomic.h | 92 | ||||
| -rw-r--r-- | libpthread/nptl/sysdeps/unix/sysv/linux/or1k/bits/atomic.h | 128 |
2 files changed, 92 insertions, 128 deletions
diff --git a/libc/sysdeps/linux/or1k/bits/atomic.h b/libc/sysdeps/linux/or1k/bits/atomic.h new file mode 100644 index 000000000..233bbdc47 --- /dev/null +++ b/libc/sysdeps/linux/or1k/bits/atomic.h @@ -0,0 +1,92 @@ +/* Copyright (C) 2010-2012 Free Software Foundation, Inc. + This file is part of the GNU C Library. + Contributed by Maxim Kuvyrkov <maxim@codesourcery.com>, 2010. + + 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 _OR1K_BITS_ATOMIC_H +#define _OR1K_BITS_ATOMIC_H + +#include <stdint.h> + +typedef int8_t atomic8_t; +typedef uint8_t uatomic8_t; +typedef int_fast8_t atomic_fast8_t; +typedef uint_fast8_t uatomic_fast8_t; + +typedef int16_t atomic16_t; +typedef uint16_t uatomic16_t; +typedef int_fast16_t atomic_fast16_t; +typedef uint_fast16_t uatomic_fast16_t; + +typedef int32_t atomic32_t; +typedef uint32_t uatomic32_t; +typedef int_fast32_t atomic_fast32_t; +typedef uint_fast32_t uatomic_fast32_t; + +typedef int64_t atomic64_t; +typedef uint64_t uatomic64_t; +typedef int_fast64_t atomic_fast64_t; +typedef uint_fast64_t uatomic_fast64_t; + +typedef intptr_t atomicptr_t; +typedef uintptr_t uatomicptr_t; +typedef intmax_t atomic_max_t; +typedef uintmax_t uatomic_max_t; + + +#ifndef atomic_full_barrier +# define atomic_full_barrier() __asm__ ("" ::: "memory") +#endif + +#ifndef atomic_read_barrier +# define atomic_read_barrier() atomic_full_barrier () +#endif + +#ifndef atomic_write_barrier +# define atomic_write_barrier() atomic_full_barrier () +#endif + +#define atomic_exchange_acq(mem, newval) \ + ({ __typeof (newval) val; \ + \ + __asm__ volatile ( \ + "1: l.lwa %0, 0(%1) \n" \ + " l.swa 0(%1), %2 \n" \ + " l.bnf 1b \n" \ + " l.nop \n" \ + : "=&r"(val) \ + : "r"(mem), "r"(newval) \ + : "cc", "memory"); \ + val; }) + +#define atomic_compare_and_exchange_val_acq(mem, newval, oldval) \ + ({ __typeof (newval) val; \ + \ + __asm__ volatile ( \ + "1: l.lwa %0, 0(%1) \n" \ + " l.sfeq %0, %2 \n" \ + " l.bnf 2f \n" \ + " l.nop \n" \ + " l.swa 0(%1), %3 \n" \ + " l.bnf 1b \n" \ + " l.nop \n" \ + "2: \n" \ + : "=&r"(val) \ + : "r"(mem), "r"(oldval), "r"(newval) \ + : "cc", "memory"); \ + val; }) + +#endif diff --git a/libpthread/nptl/sysdeps/unix/sysv/linux/or1k/bits/atomic.h b/libpthread/nptl/sysdeps/unix/sysv/linux/or1k/bits/atomic.h deleted file mode 100644 index 43440dc3c..000000000 --- a/libpthread/nptl/sysdeps/unix/sysv/linux/or1k/bits/atomic.h +++ /dev/null @@ -1,128 +0,0 @@ -/* Copyright (C) 2010-2012 Free Software Foundation, Inc. - This file is part of the GNU C Library. - Contributed by Maxim Kuvyrkov <maxim@codesourcery.com>, 2010. - - 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_ATOMIC_H -#define _BITS_ATOMIC_H 1 - -#include <stdint.h> - -/* This is needed to break a depencency loop, we do not need errno anyway */ -#ifndef _ERRNO_H -# define _ERRNO_H -# include <sysdep.h> -# undef _ERRNO_H -#else -# include <sysdep.h> -#endif - -/* Or1k has no atomic compare-and-exchange operation, but the - kernel provides userspace atomicity operations. Use them. */ - -typedef int32_t atomic32_t; -typedef uint32_t uatomic32_t; -typedef int_fast32_t atomic_fast32_t; -typedef uint_fast32_t uatomic_fast32_t; - -typedef intptr_t atomicptr_t; -typedef uintptr_t uatomicptr_t; -typedef intmax_t atomic_max_t; -typedef uintmax_t uatomic_max_t; - -/* TODO: Move these to a kernel header */ -#define OR1K_ATOMIC_SWAP 1 -#define OR1K_ATOMIC_CMPXCHG 2 -#define OR1K_ATOMIC_XCHG 3 -#define OR1K_ATOMIC_ADD 4 -#define OR1K_ATOMIC_DECPOS 5 -#define OR1K_ATOMIC_AND 6 -#define OR1K_ATOMIC_OR 7 -#define OR1K_ATOMIC_UMAX 8 -#define OR1K_ATOMIC_UMIN 9 - -#define atomic_compare_and_exchange_val_acq(mem, newval, oldval) \ - ((__typeof (*(mem))) ((sizeof (*(mem)) == 4) ? \ - INTERNAL_SYSCALL (or1k_atomic, , 4, \ - OR1K_ATOMIC_CMPXCHG, mem, oldval, newval) \ - : __atomic_error_bad_argument_size ())) - -#define atomic_exchange_acq(mem, newval) \ - ((__typeof (*(mem))) ((sizeof (*(mem)) == 4) ? \ - INTERNAL_SYSCALL (or1k_atomic, , 3, \ - OR1K_ATOMIC_XCHG, mem, newval) \ - : __atomic_error_bad_argument_size ())) - -#define atomic_exchange_and_add_acq(mem, val) \ - ((__typeof (*(mem))) ((sizeof (*(mem)) == 4) ? \ - INTERNAL_SYSCALL (or1k_atomic, , 3, \ - OR1K_ATOMIC_ADD, mem, val) \ - : __atomic_error_bad_argument_size ())) - -#define atomic_decrement_if_positive(mem) \ - ((__typeof (*(mem))) ((sizeof (*(mem)) == 4) ? \ - INTERNAL_SYSCALL (or1k_atomic, , 2, \ - OR1K_ATOMIC_DECPOS, mem) \ - : __atomic_error_bad_argument_size ())) - -#define atomic_and_val(mem, mask) \ - ((__typeof (*(mem))) ((sizeof (*(mem)) == 4) ? \ - INTERNAL_SYSCALL (or1k_atomic, , 3, \ - OR1K_ATOMIC_AND, mem, mask) \ - : __atomic_error_bad_argument_size ())) - -#define atomic_or_val(mem, mask) \ - ((__typeof (*(mem))) ((sizeof (*(mem)) == 4) ? \ - INTERNAL_SYSCALL (or1k_atomic, , 3, \ - OR1K_ATOMIC_OR, mem, mask) \ - : __atomic_error_bad_argument_size ())) - -#define atomic_max_val(mem, val) \ - ((__typeof (*(mem))) ((sizeof (*(mem)) == 4) ? \ - INTERNAL_SYSCALL (or1k_atomic, , 3, \ - OR1K_ATOMIC_UMAX, mem, val) \ - : __atomic_error_bad_argument_size ())) - -#define atomic_min_val(mem, val) \ - ((__typeof (*(mem))) ((sizeof (*(mem)) == 4) ? \ - INTERNAL_SYSCALL (or1k_atomic, , 3, \ - OR1K_ATOMIC_UMIN, mem, val) \ - : __atomic_error_bad_argument_size ())) - - -/* atomic_bit_test_set in terms of atomic_or_val. */ -#define atomic_bit_test_set(mem, bit) \ - ({ __typeof (*(mem)) __att0_mask = ((__typeof (*(mem))) 1 << (bit)); \ - atomic_or_val ((mem), __att0_mask) & __att0_mask; }) - -/* Various macros that should just be synonyms. */ -#define catomic_exchange_and_add atomic_exchange_and_add -#define atomic_and(mem, mask) ((void) atomic_and_val ((mem), (mask))) -#define catomic_and atomic_and -#define atomic_or(mem, mask) ((void) atomic_or_val ((mem), (mask))) -#define catomic_or atomic_or -#define atomic_max(mem, val) ((void)atomic_max_val ((mem), (val))) -#define catomic_max atomic_max -#define atomic_min(mem, val) ((void)atomic_min_val ((mem), (val))) -#define catomic_min atomic_min -/* - * This non-existent symbol is called for unsupporrted sizes, - * indicating a bug in the caller. - */ -extern int __atomic_error_bad_argument_size(void) - __attribute__ ((error ("bad sizeof atomic argument"))); - -#endif |