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libc32.go (776B)

      1 // Copyright 2020 The Libc 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 //go:build 386 || arm
      6 // +build 386 arm
      7 
      8 package libc // import "modernc.org/libc"
      9 
     10 const (
     11 	heapSize = 1 << 30 // Adjust for your debugging session requirements and system RAM size.
     12 )
     13 
     14 type (
     15 	// RawMem represents the biggest byte array the runtime can handle
     16 	RawMem [1<<31 - 1]byte
     17 
     18 	// 32-5*4 = 12 bytes left to pad
     19 	stackHeaderPadding struct {
     20 		a uintptr
     21 		b uintptr
     22 		c uintptr
     23 	}
     24 )
     25 
     26 type bits []int
     27 
     28 func newBits(n int) (r bits)  { return make(bits, (n+31)>>5) }
     29 func (b bits) has(n int) bool { return b != nil && b[n>>5]&(1<<uint(n&31)) != 0 }
     30 func (b bits) set(n int)      { b[n>>5] |= 1 << uint(n&31) }