273 lines
5.8 KiB
C
273 lines
5.8 KiB
C
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/***
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*setjmp.h - definitions/declarations for setjmp/longjmp routines
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*
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* Copyright (c) 1985-1996, Microsoft Corporation. All rights reserved.
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*
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*Purpose:
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* This file defines the machine-dependent buffer used by
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* setjmp/longjmp to save and restore the program state, and
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* declarations for those routines.
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* [ANSI/System V]
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*
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* The setjmp() that will be used by those who include this file
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* is _setjmpex, which is safe for use with try/except/finally,
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* but is slow. See <crt/setjmpex.h> and <crt/setjmp.h> for more.
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*
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****/
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#ifndef _INC_SETJMP
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#include <signal.h>
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#ifndef __cplusplus
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#define _CRTAPI1 __cdecl
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#define _CRTAPI2 __cdecl
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/*
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* Posix programs use _setjmpex by default.
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*/
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/*
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* Definitions specific to particular setjmp implementations.
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*/
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#if defined(_M_IX86)
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#define longjmp _longjmpex
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#define setjmp _setjmp
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/*
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* MS C8-32 or older MS C6-386 compilers
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*/
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#define _JBLEN 16
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#define _JBTYPE int
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/*
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* Define jump buffer layout for x86 setjmp/longjmp
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*/
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typedef struct __JUMP_BUFFER {
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unsigned long Ebp;
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unsigned long Ebx;
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unsigned long Edi;
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unsigned long Esi;
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unsigned long Esp;
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unsigned long Eip;
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unsigned long Registration;
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unsigned long TryLevel;
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unsigned long Cookie;
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unsigned long UnwindFunc;
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unsigned long UnwindData[6];
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} _JUMP_BUFFER;
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#elif defined(_ALPHA_)
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/*
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* Alpha implementations need a _JBLEN of 20 quadwords.
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* A double is used only to obtain quadword size and alignment.
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*/
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#define _JBLEN 20
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#define _JBTYPE double
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#define _setjmp setjmp
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/*
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* Define jump buffer layout for Alpha setjmp/longjmp.
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* A double is used only to obtain quadword size and alignment.
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*/
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typedef struct __JUMP_BUFFER {
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unsigned long Fp;
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unsigned long Pc;
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unsigned long Seb;
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unsigned long Type;
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double FltF2;
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double FltF3;
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double FltF4;
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double FltF5;
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double FltF6;
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double FltF7;
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double FltF8;
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double FltF9;
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double IntS0;
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double IntS1;
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double IntS2;
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double IntS3;
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double IntS4;
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double IntS5;
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double IntS6;
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double IntSp;
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double Fir;
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double Fill;
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} _JUMP_BUFFER;
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#elif defined(_M_IA64)
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/*
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* Length is 528 bytes
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* Since this is allocated as an array of "__int64", the
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* number of entries required is 66.
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*
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* All IA64 implementations need _JBLEN of 66
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*/
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#define _JBLEN 66
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#define _JBTYPE __int64
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#ifndef _INC_SETJMPEX
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#define setjmp _setjmp
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#endif
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/*
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* Define jump buffer layout for IA64 setjmp/longjmp.
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*/
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typedef struct __JUMP_BUFFER {
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//
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// x86 reserved.
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//
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unsigned long iAReserved[6];
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//
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// x86 C9.0 compatibility
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//
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unsigned long Registration; // point to the UnwindData field.
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unsigned long TryLevel; // ignored by setjmp
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unsigned long Cookie; // set to "VC20" by setjmp
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unsigned long UnwindFunc; // set to EM longjmp() by setjmp
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//
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//
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// First dword is zero to indicate it's an exception registration
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// record prepared by EM setjmp function.
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// Second dword is set to 0 for unsafe EM setjmp, and 1 for safe
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// EM setjmp.
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// Third dword is set to the setjmp site memory stack frame pointer.
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// Fourth dword is set to the setjmp site backing store frame pointer.
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//
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unsigned long UnwindData[6];
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//
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// floating point status register,
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// and preserved floating point registers fs0 - fs19
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//
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long double FltS0;
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long double PadS0;
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long double FltS1;
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long double PadS1;
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long double FltS2;
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long double PadS2;
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long double FltS3;
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long double PadS3;
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long double FltS4;
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long double PadS4;
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long double FltS5;
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long double PadS5;
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long double FltS6;
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long double PadS6;
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long double FltS7;
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long double PadS7;
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long double FltS8;
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long double PadS8;
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long double FltS9;
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long double PadS9;
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long double FltS10;
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long double PadS10;
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long double FltS11;
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long double PadS11;
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long double FltS12;
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long double PadS12;
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long double FltS13;
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long double PadS13;
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long double FltS14;
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long double PadS14;
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long double FltS15;
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long double PadS15;
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long double FltS16;
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long double PadS16;
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long double FltS17;
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long double PadS17;
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long double FltS18;
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long double PadS18;
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long double FltS19;
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long double PadS19;
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__int64 FPSR;
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//
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// return link and preserved branch registers bs0 - bs4
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//
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__int64 StIIP; // continuation address
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__int64 BrS0;
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__int64 BrS1;
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__int64 BrS2;
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__int64 BrS3;
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__int64 BrS4;
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//
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// preserved general registers s0 - s3, sp, nats
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//
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__int64 IntS0;
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__int64 IntS1;
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__int64 IntS2;
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__int64 IntS3;
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//
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// bsp, pfs, unat, lc
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//
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__int64 RsBSP;
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__int64 RsPFS; // previous frame marker (cfm of setjmp's caller)
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__int64 ApUNAT; // User Nat collection register (preserved)
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__int64 ApLC; // loop counter
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__int64 IntSp; // memory stack pointer
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__int64 IntNats; // Nat bits of preserved integer regs s0 - s3
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__int64 Preds; // predicates
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} _JUMP_BUFFER;
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#endif /* MIPS/Alpha/PPC/IA64 */
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/* define the buffer type for holding the state information */
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#ifndef _JMP_BUF_DEFINED
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typedef _JBTYPE jmp_buf[_JBLEN];
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#define _JMP_BUF_DEFINED
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#endif
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#ifndef _SIGJMP_BUF_DEFINED
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#define _SIGJMP_BUF_DEFINED
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/*
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* sigjmp buf is just a jmp_buf plus an int to say whether the sigmask
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* is saved or not, and a sigmask_t for the mask if it is saved.
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*/
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typedef _JBTYPE sigjmp_buf[_JBLEN + 2];
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#endif /* _SIGJMP_BUF_DEFINED */
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extern _JBTYPE * __cdecl _sigjmp_store_mask(sigjmp_buf, int);
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#define sigsetjmp(_env, _save) \
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setjmp(_sigjmp_store_mask((_env), (_save)))
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/* function prototypes */
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int __cdecl setjmp(jmp_buf);
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void __cdecl longjmp(jmp_buf, int);
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void __cdecl siglongjmp(sigjmp_buf, int);
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/* function prototypes */
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#endif /* __cplusplus */
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#define _INC_SETJMP
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#endif /* _INC_SETJMP */
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