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137 lines
4.6 KiB
C++
137 lines
4.6 KiB
C++
/* jmpbuf.h -*-C++-*-
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*
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*************************************************************************
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*
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* @copyright
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* Copyright (C) 2009-2013, Intel Corporation
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* All rights reserved.
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*
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* @copyright
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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*
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* * Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* * Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in
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* the documentation and/or other materials provided with the
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* distribution.
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* * Neither the name of Intel Corporation nor the names of its
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* contributors may be used to endorse or promote products derived
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* from this software without specific prior written permission.
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*
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* @copyright
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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* HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
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* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
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* OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
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* AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY
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* WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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**************************************************************************/
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/**
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* @file jmpbuf.h
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*
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* @brief Macros and functions to access the _JUMP_BUFFER initialized by a
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* call to CILK_SETJMP before a cilk_spawn or cilk_sync. The definition of
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* CILK_SETJMP and CILK_LONGJMP are OS dependent and in abi.h
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*
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*/
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#ifndef INCLUDED_JMPBUF_DOT_H
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#define INCLUDED_JMPBUF_DOT_H
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#include <cilk/common.h>
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#include <internal/abi.h>
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#include <stddef.h>
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#include <setjmp.h>
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#if 0 /* defined CILK_USE_C_SETJMP && defined JB_RSP */
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# define JMPBUF_SP(ctx) (ctx)[0].__jmpbuf[JB_RSP]
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# define JMPBUF_FP(ctx) (ctx)[0].__jmpbuf[JB_RBP]
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# define JMPBUF_PC(ctx) (ctx)[0].__jmpbuf[JB_PC]
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#elif 0 /* defined CILK_USE_C_SETJMP && defined JB_SP */
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# define JMPBUF_SP(ctx) (ctx)[0].__jmpbuf[JB_SP]
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# define JMPBUF_FP(ctx) (ctx)[0].__jmpbuf[JB_BP]
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# define JMPBUF_PC(ctx) (ctx)[0].__jmpbuf[JB_PC]
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#elif defined _WIN64
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# define JMPBUF_SP(ctx) ((_JUMP_BUFFER*)(&(ctx)))->Rsp
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# define JMPBUF_FP(ctx) ((_JUMP_BUFFER*)(&(ctx)))->Rbp
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# define JMPBUF_PC(ctx) ((_JUMP_BUFFER*)(&(ctx)))->Rip
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#elif defined _WIN32
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/** Fetch stack pointer from a __cilkrts_stack_frame */
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# define JMPBUF_SP(ctx) (ctx).Esp
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/** Fetch frame pointer from a __cilkrts_stack_frame */
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# define JMPBUF_FP(ctx) (ctx).Ebp
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/** Fetch program counter from a __cilkrts_stack_frame */
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# define JMPBUF_PC(ctx) (ctx).Eip
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#else /* defined __GNUC__ || defined __ICC */
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/* word 0 is frame address
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* word 1 is resume address
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* word 2 is stack address */
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# define JMPBUF_FP(ctx) (ctx)[0]
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# define JMPBUF_PC(ctx) (ctx)[1]
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# define JMPBUF_SP(ctx) (ctx)[2]
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#endif
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/**
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* @brief Get frame pointer from jump buffer in__cilkrts_stack_frame.
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*/
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#define FP(SF) JMPBUF_FP((SF)->ctx)
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/**
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* @brief Get program counter from jump buffer in__cilkrts_stack_frame.
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*/
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#define PC(SF) JMPBUF_PC((SF)->ctx)
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/**
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* @brief Get stack pointer from jump buffer in__cilkrts_stack_frame.
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*/
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#define SP(SF) JMPBUF_SP((SF)->ctx)
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__CILKRTS_BEGIN_EXTERN_C
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/**
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* Fetch the stack pointer from a __cilkrts_stack_frame. The jmpbuf was
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* initialized before a cilk_spawn or cilk_sync.
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*
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* @param sf __cilkrts_stack_frame containing the jmpbuf.
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*
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* @return the stack pointer from the ctx.
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*/
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inline char *__cilkrts_get_sp(__cilkrts_stack_frame *sf)
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{
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return (char *)SP(sf);
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}
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/**
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* Calculate the frame size from __cilkrts_stack_frame. The jmpbuf was
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* initialized before a cilk_spawn or cilk_sync.
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*
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* @warning Returning an arbitrary value on Windows!
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*
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* @param sf __cilkrts_stack_frame containing the jmpbuf.
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*
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* @return the stack pointer from the ctx.
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*/
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inline ptrdiff_t __cilkrts_get_frame_size(__cilkrts_stack_frame *sf)
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{
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#ifdef _WIN32
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if (0 == SP(sf))
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return 256; // Arbitrary!
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#endif
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return (ptrdiff_t)FP(sf) - (ptrdiff_t)SP(sf);
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}
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__CILKRTS_END_EXTERN_C
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#endif // ! defined(INCLUDED_JMPBUF_DOT_H)
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