/* * Copyright (c) 2003-2011 Hewlett-Packard Development Company, L.P. * * Permission is hereby granted, free of charge, to any person obtaining a copy * of this software and associated documentation files (the "Software"), to deal * in the Software without restriction, including without limitation the rights * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell * copies of the Software, and to permit persons to whom the Software is * furnished to do so, subject to the following conditions: * * The above copyright notice and this permission notice shall be included in * all copies or substantial portions of the Software. * * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE * SOFTWARE.
*/
#include"../all_atomic_load_store.h"
#include"../all_acquire_release_volatile.h"
#include"../test_and_set_t_is_char.h"
#ifdef _ILP32 /* 32-bit HP/UX code. */ /* This requires pointer "swizzling". Pointers need to be expanded */ /* to 64 bits using the addp4 instruction before use. This makes it */ /* hard to share code, but we try anyway. */ # define AO_LEN "4" /* We assume that addr always appears in argument position 1 in asm */ /* code. If it is clobbered due to swizzling, we also need it in */ /* second position. Any later arguments are referenced symbolically, */ /* so that we don't have to worry about their position. This requires*/ /* gcc 3.1, but you shouldn't be using anything older than that on */ /* IA64 anyway. */ /* The AO_MASK macro is a workaround for the fact that HP/UX gcc */ /* appears to otherwise store 64-bit pointers in ar.ccv, i.e. it */ /* doesn't appear to clear high bits in a pointer value we pass into */ /* assembly code, even if it is supposedly of type AO_t. */ # define AO_IN_ADDR "1"(addr) # define AO_OUT_ADDR , "=r"(addr) # define AO_SWIZZLE "addp4 %1=0,%1;;\n" # define AO_MASK(ptr) __asm__ __volatile__("zxt4 %1=%1": "=r"(ptr) : "0"(ptr)) #else # define AO_LEN "8" # define AO_IN_ADDR "r"(addr) # define AO_OUT_ADDR # define AO_SWIZZLE # define AO_MASK(ptr) /* empty */ #endif/* !_ILP32 */
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