| /* Copyright (C) 2003-2014 Free Software Foundation, Inc. |
| This file is part of the GNU C Library. |
| Contributed by Andreas Schwab <schwab@suse.de>, 2003. |
| |
| 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/>. */ |
| |
| #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; |
| |
| #define __arch_compare_and_exchange_val_8_acq(mem, newval, oldval) \ |
| ({ __typeof (*(mem)) __ret; \ |
| __asm __volatile ("cas%.b %0,%2,%1" \ |
| : "=d" (__ret), "+m" (*(mem)) \ |
| : "d" (newval), "0" (oldval)); \ |
| __ret; }) |
| |
| #define __arch_compare_and_exchange_val_16_acq(mem, newval, oldval) \ |
| ({ __typeof (*(mem)) __ret; \ |
| __asm __volatile ("cas%.w %0,%2,%1" \ |
| : "=d" (__ret), "+m" (*(mem)) \ |
| : "d" (newval), "0" (oldval)); \ |
| __ret; }) |
| |
| #define __arch_compare_and_exchange_val_32_acq(mem, newval, oldval) \ |
| ({ __typeof (*(mem)) __ret; \ |
| __asm __volatile ("cas%.l %0,%2,%1" \ |
| : "=d" (__ret), "+m" (*(mem)) \ |
| : "d" (newval), "0" (oldval)); \ |
| __ret; }) |
| |
| # define __arch_compare_and_exchange_val_64_acq(mem, newval, oldval) \ |
| ({ __typeof (*(mem)) __ret; \ |
| __typeof (mem) __memp = (mem); \ |
| __asm __volatile ("cas2%.l %0:%R0,%1:%R1,(%2):(%3)" \ |
| : "=d" (__ret) \ |
| : "d" (newval), "r" (__memp), \ |
| "r" ((char *) __memp + 4), "0" (oldval) \ |
| : "memory"); \ |
| __ret; }) |
| |
| #define atomic_exchange_acq(mem, newvalue) \ |
| ({ __typeof (*(mem)) __result = *(mem); \ |
| if (sizeof (*(mem)) == 1) \ |
| __asm __volatile ("1: cas%.b %0,%2,%1;" \ |
| " jbne 1b" \ |
| : "=d" (__result), "+m" (*(mem)) \ |
| : "d" (newvalue), "0" (__result)); \ |
| else if (sizeof (*(mem)) == 2) \ |
| __asm __volatile ("1: cas%.w %0,%2,%1;" \ |
| " jbne 1b" \ |
| : "=d" (__result), "+m" (*(mem)) \ |
| : "d" (newvalue), "0" (__result)); \ |
| else if (sizeof (*(mem)) == 4) \ |
| __asm __volatile ("1: cas%.l %0,%2,%1;" \ |
| " jbne 1b" \ |
| : "=d" (__result), "+m" (*(mem)) \ |
| : "d" (newvalue), "0" (__result)); \ |
| else \ |
| { \ |
| __typeof (mem) __memp = (mem); \ |
| __asm __volatile ("1: cas2%.l %0:%R0,%1:%R1,(%2):(%3);" \ |
| " jbne 1b" \ |
| : "=d" (__result) \ |
| : "d" (newvalue), "r" (__memp), \ |
| "r" ((char *) __memp + 4), "0" (__result) \ |
| : "memory"); \ |
| } \ |
| __result; }) |
| |
| #define atomic_exchange_and_add(mem, value) \ |
| ({ __typeof (*(mem)) __result = *(mem); \ |
| __typeof (*(mem)) __temp; \ |
| if (sizeof (*(mem)) == 1) \ |
| __asm __volatile ("1: move%.b %0,%2;" \ |
| " add%.b %3,%2;" \ |
| " cas%.b %0,%2,%1;" \ |
| " jbne 1b" \ |
| : "=d" (__result), "+m" (*(mem)), \ |
| "=&d" (__temp) \ |
| : "d" (value), "0" (__result)); \ |
| else if (sizeof (*(mem)) == 2) \ |
| __asm __volatile ("1: move%.w %0,%2;" \ |
| " add%.w %3,%2;" \ |
| " cas%.w %0,%2,%1;" \ |
| " jbne 1b" \ |
| : "=d" (__result), "+m" (*(mem)), \ |
| "=&d" (__temp) \ |
| : "d" (value), "0" (__result)); \ |
| else if (sizeof (*(mem)) == 4) \ |
| __asm __volatile ("1: move%.l %0,%2;" \ |
| " add%.l %3,%2;" \ |
| " cas%.l %0,%2,%1;" \ |
| " jbne 1b" \ |
| : "=d" (__result), "+m" (*(mem)), \ |
| "=&d" (__temp) \ |
| : "d" (value), "0" (__result)); \ |
| else \ |
| { \ |
| __typeof (mem) __memp = (mem); \ |
| __asm __volatile ("1: move%.l %0,%1;" \ |
| " move%.l %R0,%R1;" \ |
| " add%.l %2,%1;" \ |
| " addx%.l %R2,%R1;" \ |
| " cas2%.l %0:%R0,%1:%R1,(%3):(%4);" \ |
| " jbne 1b" \ |
| : "=d" (__result), "=&d" (__temp) \ |
| : "d" (value), "r" (__memp), \ |
| "r" ((char *) __memp + 4), "0" (__result) \ |
| : "memory"); \ |
| } \ |
| __result; }) |
| |
| #define atomic_add(mem, value) \ |
| (void) ({ if (sizeof (*(mem)) == 1) \ |
| __asm __volatile ("add%.b %1,%0" \ |
| : "+m" (*(mem)) \ |
| : "id" (value)); \ |
| else if (sizeof (*(mem)) == 2) \ |
| __asm __volatile ("add%.w %1,%0" \ |
| : "+m" (*(mem)) \ |
| : "id" (value)); \ |
| else if (sizeof (*(mem)) == 4) \ |
| __asm __volatile ("add%.l %1,%0" \ |
| : "+m" (*(mem)) \ |
| : "id" (value)); \ |
| else \ |
| { \ |
| __typeof (mem) __memp = (mem); \ |
| __typeof (*(mem)) __oldval = *__memp; \ |
| __typeof (*(mem)) __temp; \ |
| __asm __volatile ("1: move%.l %0,%1;" \ |
| " move%.l %R0,%R1;" \ |
| " add%.l %2,%1;" \ |
| " addx%.l %R2,%R1;" \ |
| " cas2%.l %0:%R0,%1:%R1,(%3):(%4);" \ |
| " jbne 1b" \ |
| : "=d" (__oldval), "=&d" (__temp) \ |
| : "d" (value), "r" (__memp), \ |
| "r" ((char *) __memp + 4), "0" (__oldval) \ |
| : "memory"); \ |
| } \ |
| }) |
| |
| #define atomic_increment_and_test(mem) \ |
| ({ char __result; \ |
| if (sizeof (*(mem)) == 1) \ |
| __asm __volatile ("addq%.b %#1,%1; seq %0" \ |
| : "=dm" (__result), "+m" (*(mem))); \ |
| else if (sizeof (*(mem)) == 2) \ |
| __asm __volatile ("addq%.w %#1,%1; seq %0" \ |
| : "=dm" (__result), "+m" (*(mem))); \ |
| else if (sizeof (*(mem)) == 4) \ |
| __asm __volatile ("addq%.l %#1,%1; seq %0" \ |
| : "=dm" (__result), "+m" (*(mem))); \ |
| else \ |
| { \ |
| __typeof (mem) __memp = (mem); \ |
| __typeof (*(mem)) __oldval = *__memp; \ |
| __typeof (*(mem)) __temp; \ |
| __asm __volatile ("1: move%.l %1,%2;" \ |
| " move%.l %R1,%R2;" \ |
| " addq%.l %#1,%2;" \ |
| " addx%.l %5,%R2;" \ |
| " seq %0;" \ |
| " cas2%.l %1:%R1,%2:%R2,(%3):(%4);" \ |
| " jbne 1b" \ |
| : "=&dm" (__result), "=d" (__oldval), \ |
| "=&d" (__temp) \ |
| : "r" (__memp), "r" ((char *) __memp + 4), \ |
| "d" (0), "1" (__oldval) \ |
| : "memory"); \ |
| } \ |
| __result; }) |
| |
| #define atomic_decrement_and_test(mem) \ |
| ({ char __result; \ |
| if (sizeof (*(mem)) == 1) \ |
| __asm __volatile ("subq%.b %#1,%1; seq %0" \ |
| : "=dm" (__result), "+m" (*(mem))); \ |
| else if (sizeof (*(mem)) == 2) \ |
| __asm __volatile ("subq%.w %#1,%1; seq %0" \ |
| : "=dm" (__result), "+m" (*(mem))); \ |
| else if (sizeof (*(mem)) == 4) \ |
| __asm __volatile ("subq%.l %#1,%1; seq %0" \ |
| : "=dm" (__result), "+m" (*(mem))); \ |
| else \ |
| { \ |
| __typeof (mem) __memp = (mem); \ |
| __typeof (*(mem)) __oldval = *__memp; \ |
| __typeof (*(mem)) __temp; \ |
| __asm __volatile ("1: move%.l %1,%2;" \ |
| " move%.l %R1,%R2;" \ |
| " subq%.l %#1,%2;" \ |
| " subx%.l %5,%R2;" \ |
| " seq %0;" \ |
| " cas2%.l %1:%R1,%2:%R2,(%3):(%4);" \ |
| " jbne 1b" \ |
| : "=&dm" (__result), "=d" (__oldval), \ |
| "=&d" (__temp) \ |
| : "r" (__memp), "r" ((char *) __memp + 4), \ |
| "d" (0), "1" (__oldval) \ |
| : "memory"); \ |
| } \ |
| __result; }) |
| |
| #define atomic_bit_set(mem, bit) \ |
| __asm __volatile ("bfset %0{%1,#1}" \ |
| : "+m" (*(mem)) \ |
| : "di" (sizeof (*(mem)) * 8 - (bit) - 1)) |
| |
| #define atomic_bit_test_set(mem, bit) \ |
| ({ char __result; \ |
| __asm __volatile ("bfset %1{%2,#1}; sne %0" \ |
| : "=dm" (__result), "+m" (*(mem)) \ |
| : "di" (sizeof (*(mem)) * 8 - (bit) - 1)); \ |
| __result; }) |
