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Add atomicops for AIX/POWER + IBM xlC compiler.

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pull/69/head
Andrew Paprocki 10 years ago
parent 4eaa16f7a9
commit ebb41981c8
3 changed files with 459 additions and 0 deletions
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  1. 14
      src/google/protobuf/stubs/atomicops.h
  2. 440
      src/google/protobuf/stubs/atomicops_internals_aix.h
  3. 5
      src/google/protobuf/stubs/platform_macros.h

14
src/google/protobuf/stubs/atomicops.h
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@ -62,6 +62,15 @@ namespace google {
namespace protobuf {
namespace internal {
#if defined(GOOGLE_PROTOBUF_ARCH_POWER)
#if defined(_LP64) || defined(__LP64__)
typedef int32 Atomic32;
typedef intptr_t Atomic64;
#else
typedef intptr_t Atomic32;
typedef int64 Atomic64;
#endif
#else
typedef int32 Atomic32;
#ifdef GOOGLE_PROTOBUF_ARCH_64_BIT
// We need to be able to go between Atomic64 and AtomicWord implicitly. This
@ -75,6 +84,7 @@ typedef int64 Atomic64;
typedef intptr_t Atomic64;
#endif
#endif
#endif
// Use AtomicWord for a machine-sized pointer. It will use the Atomic32 or
// Atomic64 routines below, depending on your architecture.
@ -179,6 +189,10 @@ GOOGLE_PROTOBUF_ATOMICOPS_ERROR
#elif defined(GOOGLE_PROTOBUF_OS_SOLARIS)
#include <google/protobuf/stubs/atomicops_internals_solaris.h>
// AIX
#elif defined(GOOGLE_PROTOBUF_OS_AIX)
#include <google/protobuf/stubs/atomicops_internals_aix.h>
// Apple.
#elif defined(GOOGLE_PROTOBUF_OS_APPLE)
#include <google/protobuf/stubs/atomicops_internals_macosx.h>

440
src/google/protobuf/stubs/atomicops_internals_aix.h
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@ -0,0 +1,440 @@
// 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 MemoryBarrier(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_

5
src/google/protobuf/stubs/platform_macros.h
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@ -72,6 +72,9 @@
#else
#define GOOGLE_PROTOBUF_ARCH_32_BIT 1
#endif
#elif defined(_POWER)
#define GOOGLE_PROTOBUF_ARCH_POWER 1
#define GOOGLE_PROTOBUF_ARCH_64_BIT 1
#elif defined(__GNUC__)
# if (((__GNUC__ == 4) && (__GNUC_MINOR__ >= 7)) || (__GNUC__ > 4))
// We fallback to the generic Clang/GCC >= 4.7 implementation in atomicops.h
@ -96,6 +99,8 @@ GOOGLE_PROTOBUF_PLATFORM_ERROR
#define GOOGLE_PROTOBUF_OS_NACL
#elif defined(sun)
#define GOOGLE_PROTOBUF_OS_SOLARIS
#elif defined(_AIX)
#define GOOGLE_PROTOBUF_OS_AIX
#endif
#undef GOOGLE_PROTOBUF_PLATFORM_ERROR

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