github.com/huandu/go@v0.0.0-20151114150818-04e615e41150/src/cmd/internal/obj/stack.go (about)

     1  // Copyright 2011 The Go Authors.  All rights reserved.
     2  // Use of this source code is governed by a BSD-style
     3  // license that can be found in the LICENSE file.
     4  
     5  // Inferno utils/5l/span.c
     6  // http://code.google.com/p/inferno-os/source/browse/utils/5l/span.c
     7  //
     8  //	Copyright © 1994-1999 Lucent Technologies Inc.  All rights reserved.
     9  //	Portions Copyright © 1995-1997 C H Forsyth (forsyth@terzarima.net)
    10  //	Portions Copyright © 1997-1999 Vita Nuova Limited
    11  //	Portions Copyright © 2000-2007 Vita Nuova Holdings Limited (www.vitanuova.com)
    12  //	Portions Copyright © 2004,2006 Bruce Ellis
    13  //	Portions Copyright © 2005-2007 C H Forsyth (forsyth@terzarima.net)
    14  //	Revisions Copyright © 2000-2007 Lucent Technologies Inc. and others
    15  //	Portions Copyright © 2009 The Go Authors.  All rights reserved.
    16  //
    17  // Permission is hereby granted, free of charge, to any person obtaining a copy
    18  // of this software and associated documentation files (the "Software"), to deal
    19  // in the Software without restriction, including without limitation the rights
    20  // to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
    21  // copies of the Software, and to permit persons to whom the Software is
    22  // furnished to do so, subject to the following conditions:
    23  //
    24  // The above copyright notice and this permission notice shall be included in
    25  // all copies or substantial portions of the Software.
    26  //
    27  // THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
    28  // IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
    29  // FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL THE
    30  // AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
    31  // LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
    32  // OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
    33  // THE SOFTWARE.
    34  
    35  package obj
    36  
    37  // For the linkers. Must match Go definitions.
    38  // TODO(rsc): Share Go definitions with linkers directly.
    39  
    40  const (
    41  	STACKSYSTEM = 0
    42  	StackSystem = STACKSYSTEM
    43  	StackBig    = 4096
    44  	StackGuard  = 640*stackGuardMultiplier + StackSystem
    45  	StackSmall  = 128
    46  	StackLimit  = StackGuard - StackSystem - StackSmall
    47  )
    48  
    49  const (
    50  	StackPreempt = -1314 // 0xfff...fade
    51  )