// Copyright 2014 Bloomberg Finance LP. All rights reserved. // // Redistribution and use in source and binary forms, with or without // modification, are permitted provided that the following conditions are // met: // // * Redistributions of source code must retain the above copyright // notice, this list of conditions and the following disclaimer. // * Redistributions in binary form must reproduce the above // copyright notice, this list of conditions and the following disclaimer // in the documentation and/or other materials provided with the // distribution. // * Neither the name of Bloomberg Finance LP. nor the names of its // contributors may be used to endorse or promote products derived from // this software without specific prior written permission. // // THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS // "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT // LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR // A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT // OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, // SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT // LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, // DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY // THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT // (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE // OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. // This file is an internal atomic implementation, use atomicops.h instead. #ifndef GOOGLE_PROTOBUF_ATOMICOPS_INTERNALS_AIX_H_ #define GOOGLE_PROTOBUF_ATOMICOPS_INTERNALS_AIX_H_ namespace google { namespace protobuf { namespace internal { inline Atomic32 NoBarrier_CompareAndSwap(volatile Atomic32* ptr, Atomic32 old_value, Atomic32 new_value) { Atomic32 result; asm volatile ( "1: lwarx %[res], %[zero], %[obj] \n\t" // load and reserve " cmpw %[cmp], %[res] \n\t" // compare values " bne- 2f \n\t" " stwcx. %[val], %[zero], %[obj] \n\t" // store new value " bne- 1b \n\t" "2: \n\t" : [res] "=&b" (result) : [obj] "b" (ptr), [cmp] "b" (old_value), [val] "b" (new_value), [zero] "i" (0) : "cr0", "ctr"); return result; } inline Atomic32 NoBarrier_AtomicExchange(volatile Atomic32* ptr, Atomic32 new_value) { Atomic32 result; asm volatile ( "1: lwarx %[res], %[zero], %[obj] \n\t" " stwcx. %[val], %[zero], %[obj] \n\t" " bne- 1b \n\t" : [res] "=&b" (result) : [obj] "b" (ptr), [val] "b" (new_value), [zero] "i" (0) : "cr0", "ctr"); return result; } inline Atomic32 NoBarrier_AtomicIncrement(volatile Atomic32* ptr, Atomic32 increment) { Atomic32 result; asm volatile ( "1: lwarx %[res], %[zero], %[obj] \n\t" // load and reserve " add %[res], %[val], %[res] \n\t" // add the operand " stwcx. %[res], %[zero], %[obj] \n\t" // store old value // if still reserved " bne- 1b \n\t" : [res] "=&b" (result) : [obj] "b" (ptr), [val] "b" (increment), [zero] "i" (0) : "cr0", "ctr"); return result; } inline void MemoryBarrierInternal(void) { asm volatile ( " lwsync \n\t" " isync \n\t" : : : "memory"); } inline Atomic32 Barrier_AtomicIncrement(volatile Atomic32* ptr, Atomic32 increment) { Atomic32 result; asm volatile ( " lwsync \n\t" "1: lwarx %[res], %[zero], %[obj] \n\t" // load and reserve " add %[res], %[val], %[res] \n\t" // add the operand " stwcx. %[res], %[zero], %[obj] \n\t" // store old value // if still reserved " bne- 1b \n\t" " isync \n\t" : [res] "=&b" (result) : [obj] "b" (ptr), [val] "b" (increment), [zero] "i" (0) : "cr0", "ctr"); return result; } inline Atomic32 Acquire_CompareAndSwap(volatile Atomic32* ptr, Atomic32 old_value, Atomic32 new_value) { Atomic32 result; asm volatile ( "1: lwarx %[res], %[zero], %[obj] \n\t" // load and reserve " cmpw %[cmp], %[res] \n\t" // compare values " bne- 2f \n\t" " stwcx. %[val], %[zero], %[obj] \n\t" // store new value " bne- 1b \n\t" " isync \n\t" "2: \n\t" : [res] "=&b" (result) : [obj] "b" (ptr), [cmp] "b" (old_value), [val] "b" (new_value), [zero] "i" (0) : "cr0", "ctr"); return result; } inline Atomic32 Release_CompareAndSwap(volatile Atomic32* ptr, Atomic32 old_value, Atomic32 new_value) { Atomic32 result; asm volatile ( " lwsync \n\t" "1: lwarx %[res], %[zero], %[obj] \n\t" // load and reserve " cmpw %[cmp], %[res] \n\t" // compare values " bne- 2f \n\t" " stwcx. %[val], %[zero], %[obj] \n\t" // store new value " bne- 1b \n\t" "2: \n\t" : [res] "=&b" (result) : [obj] "b" (ptr), [cmp] "b" (old_value), [val] "b" (new_value), [zero] "i" (0) : "cr0", "ctr"); return result; } inline void NoBarrier_Store(volatile Atomic32* ptr, Atomic32 value) { *ptr = value; } inline void Acquire_Store(volatile Atomic32* ptr, Atomic32 value) { asm volatile ( " stw %[val], %[obj] \n\t" " isync \n\t" : [obj] "=m" (*ptr) : [val] "b" (value)); } inline void Release_Store(volatile Atomic32* ptr, Atomic32 value) { asm volatile ( " lwsync \n\t" " stw %[val], %[obj] \n\t" : [obj] "=m" (*ptr) : [val] "b" (value)); } inline Atomic32 NoBarrier_Load(volatile const Atomic32* ptr) { return *ptr; } inline Atomic32 Acquire_Load(volatile const Atomic32* ptr) { Atomic32 result; asm volatile ( "1: lwz %[res], %[obj] \n\t" " cmpw %[res], %[res] \n\t" // create data // dependency for // load/load ordering " bne- 1b \n\t" // never taken " isync \n\t" : [res] "=b" (result) : [obj] "m" (*ptr), [zero] "i" (0) : "cr0", "ctr"); return result; } inline Atomic32 Release_Load(volatile const Atomic32* ptr) { Atomic32 result; asm volatile ( " lwsync \n\t" "1: lwz %[res], %[obj] \n\t" " cmpw %[res], %[res] \n\t" // create data // dependency for // load/load ordering " bne- 1b \n\t" // never taken : [res] "=b" (result) : [obj] "m" (*ptr), [zero] "i" (0) : "cr0", "ctr"); return result; } #ifdef GOOGLE_PROTOBUF_ARCH_64_BIT inline Atomic64 NoBarrier_CompareAndSwap(volatile Atomic64* ptr, Atomic64 old_value, Atomic64 new_value) { Atomic64 result; asm volatile ( "1: ldarx %[res], %[zero], %[obj] \n\t" // load and reserve " cmpd %[cmp], %[res] \n\t" // compare values " bne- 2f \n\t" " stdcx. %[val], %[zero], %[obj] \n\t" // store the new value " bne- 1b \n\t" "2: \n\t" : [res] "=&b" (result) : [obj] "b" (ptr), [cmp] "b" (old_value), [val] "b" (new_value), [zero] "i" (0) : "cr0", "ctr"); return result; } inline Atomic64 NoBarrier_AtomicExchange(volatile Atomic64* ptr, Atomic64 new_value) { Atomic64 result; asm volatile ( "1: ldarx %[res], %[zero], %[obj] \n\t" " stdcx. %[val], %[zero], %[obj] \n\t" " bne- 1b \n\t" : [res] "=&b" (result) : [obj] "b" (ptr), [val] "b" (new_value), [zero] "i" (0) : "cr0", "ctr"); return result; } inline Atomic64 NoBarrier_AtomicIncrement(volatile Atomic64* ptr, Atomic64 increment) { Atomic64 result; asm volatile ( "1: ldarx %[res], %[zero], %[obj] \n\t" // load and reserve " add %[res], %[res], %[val] \n\t" // add the operand " stdcx. %[res], %[zero], %[obj] \n\t" // store old value if // still reserved " bne- 1b \n\t" : [res] "=&b" (result) : [obj] "b" (ptr), [val] "b" (increment), [zero] "i" (0) : "cr0", "ctr"); return result; } inline Atomic64 Barrier_AtomicIncrement(volatile Atomic64* ptr, Atomic64 increment) { Atomic64 result; asm volatile ( " lwsync \n\t" "1: ldarx %[res], %[zero], %[obj] \n\t" // load and reserve " add %[res], %[res], %[val] \n\t" // add the operand " stdcx. %[res], %[zero], %[obj] \n\t" // store old value if // still reserved " bne- 1b \n\t" " isync \n\t" : [res] "=&b" (result) : [obj] "b" (ptr), [val] "b" (increment), [zero] "i" (0) : "cr0", "ctr"); return result; } inline Atomic64 Acquire_CompareAndSwap(volatile Atomic64* ptr, Atomic64 old_value, Atomic64 new_value) { Atomic64 result; asm volatile ( "1: ldarx %[res], %[zero], %[obj] \n\t" // load and reserve " cmpd %[cmp], %[res] \n\t" // compare values " bne- 2f \n\t" " stdcx. %[val], %[zero], %[obj] \n\t" // store the new value " bne- 1b \n\t" " isync \n\t" "2: \n\t" : [res] "=&b" (result) : [obj] "b" (ptr), [cmp] "b" (old_value), [val] "b" (new_value), [zero] "i" (0) : "cr0", "ctr"); return result; } inline Atomic64 Release_CompareAndSwap(volatile Atomic64* ptr, Atomic64 old_value, Atomic64 new_value) { Atomic64 result; asm volatile ( " lwsync \n\t" "1: ldarx %[res], %[zero], %[obj] \n\t" // load and reserve " cmpd %[cmp], %[res] \n\t" // compare values " bne- 2f \n\t" " stdcx. %[val], %[zero], %[obj] \n\t" // store the new value " bne- 1b \n\t" "2: \n\t" : [res] "=&b" (result) : [obj] "b" (ptr), [cmp] "b" (old_value), [val] "b" (new_value), [zero] "i" (0) : "cr0", "ctr"); return result; } inline void NoBarrier_Store(volatile Atomic64* ptr, Atomic64 value) { *ptr = value; } inline void Acquire_Store(volatile Atomic64* ptr, Atomic64 value) { asm volatile ( " std %[val], %[obj] \n\t" " isync \n\t" : [obj] "=m" (*ptr) : [val] "b" (value)); } inline void Release_Store(volatile Atomic64* ptr, Atomic64 value) { asm volatile ( " lwsync \n\t" " std %[val], %[obj] \n\t" : [obj] "=m" (*ptr) : [val] "b" (value)); } inline Atomic64 NoBarrier_Load(volatile const Atomic64* ptr) { return *ptr; } inline Atomic64 Acquire_Load(volatile const Atomic64* ptr) { Atomic64 result; asm volatile ( "1: ld %[res], %[obj] \n\t" " cmpd %[res], %[res] \n\t" // create data // dependency for // load/load ordering " bne- 1b \n\t" // never taken " isync \n\t" : [res] "=b" (result) : [obj] "m" (*ptr), [zero] "i" (0) : "cr0", "ctr"); return result; } inline Atomic64 Release_Load(volatile const Atomic64* ptr) { Atomic64 result; asm volatile ( " lwsync \n\t" "1: ld %[res], %[obj] \n\t" " cmpd %[res], %[res] \n\t" // create data // dependency for // load/load ordering " bne- 1b \n\t" // never taken : [res] "=b" (result) : [obj] "m" (*ptr), [zero] "i" (0) : "cr0", "ctr"); return result; } #endif } // namespace internal } // namespace protobuf } // namespace google #endif // GOOGLE_PROTOBUF_ATOMICOPS_INTERNALS_SPARC_GCC_H_