modernc.org/libc@v1.24.1/libc64.go (about)

     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 amd64 || arm64 || ppc64le || riscv64 || s390x || loong64
     6  // +build amd64 arm64 ppc64le riscv64 s390x loong64
     7  
     8  package libc // import "modernc.org/libc"
     9  
    10  const (
    11  	heapSize = 2 << 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<<50 - 1]byte
    17  
    18  	// 48-5*8 = 8 bytes left to pad
    19  	stackHeaderPadding struct {
    20  		a uintptr
    21  	}
    22  )
    23  
    24  type bits []int
    25  
    26  func newBits(n int) (r bits)  { return make(bits, (n+63)>>6) }
    27  func (b bits) has(n int) bool { return b != nil && b[n>>6]&(1<<uint(n&63)) != 0 }
    28  func (b bits) set(n int)      { b[n>>6] |= 1 << uint(n&63) }