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b76e6f8825
This reverts CL 190098. Reason for revert: broke several builders. Change-Id: I69161352f9ded02537d8815f259c4d391edd9220 Reviewed-on: https://go-review.googlesource.com/c/go/+/201519 Run-TryBot: Bryan C. Mills <bcmills@google.com> Reviewed-by: Austin Clements <austin@google.com> Reviewed-by: Dan Scales <danscales@google.com>
34 lines
907 B
Go
34 lines
907 B
Go
// Copyright 2011 The Go Authors. All rights reserved.
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// Use of this source code is governed by a BSD-style
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// license that can be found in the LICENSE file.
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package objabi
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// For the linkers. Must match Go definitions.
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const (
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STACKSYSTEM = 0
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StackSystem = STACKSYSTEM
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StackBig = 4096
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StackSmall = 128
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)
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const (
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StackPreempt = -1314 // 0xfff...fade
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)
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// Initialize StackGuard and StackLimit according to target system.
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var StackGuard = 880*stackGuardMultiplier() + StackSystem
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var StackLimit = StackGuard - StackSystem - StackSmall
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// stackGuardMultiplier returns a multiplier to apply to the default
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// stack guard size. Larger multipliers are used for non-optimized
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// builds that have larger stack frames or for specific targets.
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func stackGuardMultiplier() int {
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// On AIX, a larger stack is needed for syscalls.
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if GOOS == "aix" {
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return 2
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}
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return stackGuardMultiplierDefault
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}
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