| /* Copyright (C) 2003-2014 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/>. */ |
| |
| #include <stdint.h> |
| #include <sysdep.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 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; |
| |
| |
| /* Microblaze does not have byte and halfword forms of load and reserve and |
| store conditional. So for microblaze we stub out the 8- and 16-bit forms. */ |
| #define __arch_compare_and_exchange_bool_8_acq(mem, newval, oldval) \ |
| (abort (), 0) |
| |
| #define __arch_compare_and_exchange_bool_16_acq(mem, newval, oldval) \ |
| (abort (), 0) |
| |
| #define __arch_compare_and_exchange_bool_8_rel(mem, newval, oldval) \ |
| (abort (), 0) |
| |
| #define __arch_compare_and_exchange_bool_16_rel(mem, newval, oldval) \ |
| (abort (), 0) |
| |
| #define __arch_compare_and_exchange_val_32_acq(mem, newval, oldval) \ |
| ({ \ |
| __typeof (*(mem)) __tmp; \ |
| __typeof (mem) __memp = (mem); \ |
| int test; \ |
| __asm __volatile ( \ |
| " addc r0, r0, r0;" \ |
| "1: lwx %0, %3, r0;" \ |
| " addic %1, r0, 0;" \ |
| " bnei %1, 1b;" \ |
| " cmp %1, %0, %4;" \ |
| " bnei %1, 2f;" \ |
| " swx %5, %3, r0;" \ |
| " addic %1, r0, 0;" \ |
| " bnei %1, 1b;" \ |
| "2:" \ |
| : "=&r" (__tmp), \ |
| "=&r" (test), \ |
| "=m" (*__memp) \ |
| : "r" (__memp), \ |
| "r" (oldval), \ |
| "r" (newval) \ |
| : "cc", "memory"); \ |
| __tmp; \ |
| }) |
| |
| #define __arch_compare_and_exchange_val_64_acq(mem, newval, oldval) \ |
| (abort (), (__typeof (*mem)) 0) |
| |
| #define atomic_compare_and_exchange_val_acq(mem, newval, oldval) \ |
| ({ \ |
| __typeof (*(mem)) __result; \ |
| if (sizeof (*mem) == 4) \ |
| __result = __arch_compare_and_exchange_val_32_acq (mem, newval, oldval); \ |
| else if (sizeof (*mem) == 8) \ |
| __result = __arch_compare_and_exchange_val_64_acq (mem, newval, oldval); \ |
| else \ |
| abort (); \ |
| __result; \ |
| }) |
| |
| #define atomic_compare_and_exchange_val_rel(mem, newval, oldval) \ |
| ({ \ |
| __typeof (*(mem)) __result; \ |
| if (sizeof (*mem) == 4) \ |
| __result = __arch_compare_and_exchange_val_32_acq (mem, newval, oldval); \ |
| else if (sizeof (*mem) == 8) \ |
| __result = __arch_compare_and_exchange_val_64_acq (mem, newval, oldval); \ |
| else \ |
| abort (); \ |
| __result; \ |
| }) |
| |
| #define __arch_atomic_exchange_32_acq(mem, value) \ |
| ({ \ |
| __typeof (*(mem)) __tmp; \ |
| __typeof (mem) __memp = (mem); \ |
| int test; \ |
| __asm __volatile ( \ |
| " addc r0, r0, r0;" \ |
| "1: lwx %0, %4, r0;" \ |
| " addic %1, r0, 0;" \ |
| " bnei %1, 1b;" \ |
| " swx %3, %4, r0;" \ |
| " addic %1, r0, 0;" \ |
| " bnei %1, 1b;" \ |
| : "=&r" (__tmp), \ |
| "=&r" (test), \ |
| "=m" (*__memp) \ |
| : "r" (value), \ |
| "r" (__memp) \ |
| : "cc", "memory"); \ |
| __tmp; \ |
| }) |
| |
| #define __arch_atomic_exchange_64_acq(mem, newval) \ |
| (abort (), (__typeof (*mem)) 0) |
| |
| #define atomic_exchange_acq(mem, value) \ |
| ({ \ |
| __typeof (*(mem)) __result; \ |
| if (sizeof (*mem) == 4) \ |
| __result = __arch_atomic_exchange_32_acq (mem, value); \ |
| else if (sizeof (*mem) == 8) \ |
| __result = __arch_atomic_exchange_64_acq (mem, value); \ |
| else \ |
| abort (); \ |
| __result; \ |
| }) |
| |
| #define atomic_exchange_rel(mem, value) \ |
| ({ \ |
| __typeof (*(mem)) __result; \ |
| if (sizeof (*mem) == 4) \ |
| __result = __arch_atomic_exchange_32_acq (mem, value); \ |
| else if (sizeof (*mem) == 8) \ |
| __result = __arch_atomic_exchange_64_acq (mem, value); \ |
| else \ |
| abort (); \ |
| __result; \ |
| }) |
| |
| #define __arch_atomic_exchange_and_add_32(mem, value) \ |
| ({ \ |
| __typeof (*(mem)) __tmp; \ |
| __typeof (mem) __memp = (mem); \ |
| int test; \ |
| __asm __volatile ( \ |
| " addc r0, r0, r0;" \ |
| "1: lwx %0, %4, r0;" \ |
| " addic %1, r0, 0;" \ |
| " bnei %1, 1b;" \ |
| " add %1, %3, %0;" \ |
| " swx %1, %4, r0;" \ |
| " addic %1, r0, 0;" \ |
| " bnei %1, 1b;" \ |
| : "=&r" (__tmp), \ |
| "=&r" (test), \ |
| "=m" (*__memp) \ |
| : "r" (value), \ |
| "r" (__memp) \ |
| : "cc", "memory"); \ |
| __tmp; \ |
| }) |
| |
| #define __arch_atomic_exchange_and_add_64(mem, value) \ |
| (abort (), (__typeof (*mem)) 0) |
| |
| #define atomic_exchange_and_add(mem, value) \ |
| ({ \ |
| __typeof (*(mem)) __result; \ |
| if (sizeof (*mem) == 4) \ |
| __result = __arch_atomic_exchange_and_add_32 (mem, value); \ |
| else if (sizeof (*mem) == 8) \ |
| __result = __arch_atomic_exchange_and_add_64 (mem, value); \ |
| else \ |
| abort (); \ |
| __result; \ |
| }) |
| |
| #define __arch_atomic_increment_val_32(mem) \ |
| ({ \ |
| __typeof (*(mem)) __val; \ |
| int test; \ |
| __asm __volatile ( \ |
| " addc r0, r0, r0;" \ |
| "1: lwx %0, %3, r0;" \ |
| " addic %1, r0, 0;" \ |
| " bnei %1, 1b;" \ |
| " addi %0, %0, 1;" \ |
| " swx %0, %3, r0;" \ |
| " addic %1, r0, 0;" \ |
| " bnei %1, 1b;" \ |
| : "=&r" (__val), \ |
| "=&r" (test), \ |
| "=m" (*mem) \ |
| : "r" (mem), \ |
| "m" (*mem) \ |
| : "cc", "memory"); \ |
| __val; \ |
| }) |
| |
| #define __arch_atomic_increment_val_64(mem) \ |
| (abort (), (__typeof (*mem)) 0) |
| |
| #define atomic_increment_val(mem) \ |
| ({ \ |
| __typeof (*(mem)) __result; \ |
| if (sizeof (*(mem)) == 4) \ |
| __result = __arch_atomic_increment_val_32 (mem); \ |
| else if (sizeof (*(mem)) == 8) \ |
| __result = __arch_atomic_increment_val_64 (mem); \ |
| else \ |
| abort (); \ |
| __result; \ |
| }) |
| |
| #define atomic_increment(mem) ({ atomic_increment_val (mem); (void) 0; }) |
| |
| #define __arch_atomic_decrement_val_32(mem) \ |
| ({ \ |
| __typeof (*(mem)) __val; \ |
| int test; \ |
| __asm __volatile ( \ |
| " addc r0, r0, r0;" \ |
| "1: lwx %0, %3, r0;" \ |
| " addic %1, r0, 0;" \ |
| " bnei %1, 1b;" \ |
| " rsubi %0, %0, 1;" \ |
| " swx %0, %3, r0;" \ |
| " addic %1, r0, 0;" \ |
| " bnei %1, 1b;" \ |
| : "=&r" (__val), \ |
| "=&r" (test), \ |
| "=m" (*mem) \ |
| : "r" (mem), \ |
| "m" (*mem) \ |
| : "cc", "memory"); \ |
| __val; \ |
| }) |
| |
| #define __arch_atomic_decrement_val_64(mem) \ |
| (abort (), (__typeof (*mem)) 0) |
| |
| #define atomic_decrement_val(mem) \ |
| ({ \ |
| __typeof (*(mem)) __result; \ |
| if (sizeof (*(mem)) == 4) \ |
| __result = __arch_atomic_decrement_val_32 (mem); \ |
| else if (sizeof (*(mem)) == 8) \ |
| __result = __arch_atomic_decrement_val_64 (mem); \ |
| else \ |
| abort (); \ |
| __result; \ |
| }) |
| |
| #define atomic_decrement(mem) ({ atomic_decrement_val (mem); (void) 0; }) |
