| /* jmpbuf.h -*-C++-*- |
| * |
| ************************************************************************* |
| * |
| * @copyright |
| * Copyright (C) 2009-2013, Intel Corporation |
| * All rights reserved. |
| * |
| * @copyright |
| * 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 Intel Corporation nor the names of its |
| * contributors may be used to endorse or promote products derived |
| * from this software without specific prior written permission. |
| * |
| * @copyright |
| * 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 |
| * HOLDER 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. |
| **************************************************************************/ |
| |
| /** |
| * @file jmpbuf.h |
| * |
| * @brief Macros and functions to access the _JUMP_BUFFER initialized by a |
| * call to CILK_SETJMP before a cilk_spawn or cilk_sync. The definition of |
| * CILK_SETJMP and CILK_LONGJMP are OS dependent and in abi.h |
| * |
| */ |
| |
| #ifndef INCLUDED_JMPBUF_DOT_H |
| #define INCLUDED_JMPBUF_DOT_H |
| |
| #include <cilk/common.h> |
| #include <internal/abi.h> |
| #include <stddef.h> |
| #include <setjmp.h> |
| |
| #if 0 /* defined CILK_USE_C_SETJMP && defined JB_RSP */ |
| # define JMPBUF_SP(ctx) (ctx)[0].__jmpbuf[JB_RSP] |
| # define JMPBUF_FP(ctx) (ctx)[0].__jmpbuf[JB_RBP] |
| # define JMPBUF_PC(ctx) (ctx)[0].__jmpbuf[JB_PC] |
| #elif 0 /* defined CILK_USE_C_SETJMP && defined JB_SP */ |
| # define JMPBUF_SP(ctx) (ctx)[0].__jmpbuf[JB_SP] |
| # define JMPBUF_FP(ctx) (ctx)[0].__jmpbuf[JB_BP] |
| # define JMPBUF_PC(ctx) (ctx)[0].__jmpbuf[JB_PC] |
| #elif defined _WIN64 |
| # define JMPBUF_SP(ctx) ((_JUMP_BUFFER*)(&(ctx)))->Rsp |
| # define JMPBUF_FP(ctx) ((_JUMP_BUFFER*)(&(ctx)))->Rbp |
| # define JMPBUF_PC(ctx) ((_JUMP_BUFFER*)(&(ctx)))->Rip |
| #elif defined _WIN32 |
| /** Fetch stack pointer from a __cilkrts_stack_frame */ |
| # define JMPBUF_SP(ctx) (ctx).Esp |
| /** Fetch frame pointer from a __cilkrts_stack_frame */ |
| # define JMPBUF_FP(ctx) (ctx).Ebp |
| /** Fetch program counter from a __cilkrts_stack_frame */ |
| # define JMPBUF_PC(ctx) (ctx).Eip |
| #else /* defined __GNUC__ || defined __ICC */ |
| /* word 0 is frame address |
| * word 1 is resume address |
| * word 2 is stack address */ |
| # define JMPBUF_FP(ctx) (ctx)[0] |
| # define JMPBUF_PC(ctx) (ctx)[1] |
| # define JMPBUF_SP(ctx) (ctx)[2] |
| #endif |
| |
| /** |
| * @brief Get frame pointer from jump buffer in__cilkrts_stack_frame. |
| */ |
| #define FP(SF) JMPBUF_FP((SF)->ctx) |
| |
| /** |
| * @brief Get program counter from jump buffer in__cilkrts_stack_frame. |
| */ |
| #define PC(SF) JMPBUF_PC((SF)->ctx) |
| |
| /** |
| * @brief Get stack pointer from jump buffer in__cilkrts_stack_frame. |
| */ |
| #define SP(SF) JMPBUF_SP((SF)->ctx) |
| |
| |
| __CILKRTS_BEGIN_EXTERN_C |
| |
| /** |
| * Fetch the stack pointer from a __cilkrts_stack_frame. The jmpbuf was |
| * initialized before a cilk_spawn or cilk_sync. |
| * |
| * @param sf __cilkrts_stack_frame containing the jmpbuf. |
| * |
| * @return the stack pointer from the ctx. |
| */ |
| inline char *__cilkrts_get_sp(__cilkrts_stack_frame *sf) |
| { |
| return (char *)SP(sf); |
| } |
| |
| /** |
| * Calculate the frame size from __cilkrts_stack_frame. The jmpbuf was |
| * initialized before a cilk_spawn or cilk_sync. |
| * |
| * @warning Returning an arbitrary value on Windows! |
| * |
| * @param sf __cilkrts_stack_frame containing the jmpbuf. |
| * |
| * @return the stack pointer from the ctx. |
| */ |
| inline ptrdiff_t __cilkrts_get_frame_size(__cilkrts_stack_frame *sf) |
| { |
| #ifdef _WIN32 |
| if (0 == SP(sf)) |
| return 256; // Arbitrary! |
| #endif |
| return (ptrdiff_t)FP(sf) - (ptrdiff_t)SP(sf); |
| } |
| |
| __CILKRTS_END_EXTERN_C |
| |
| #endif // ! defined(INCLUDED_JMPBUF_DOT_H) |