// Copyright 2020 The Libc Authors. All rights reserved. // Use of this source code is governed by a BSD-style // license that can be found in the LICENSE file. //go:build ((amd64 || loong64) && !linux) || arm64 || ppc64le || riscv64 || s390x || mips64le package libc // import "modernc.org/libc" import ( "unsafe" "modernc.org/libc/limits" "modernc.org/libc/sys/types" ) const ( heapSize = 2 << 30 // Adjust for your debugging session requirements and system RAM size. ) type ( // RawMem represents the biggest byte array the runtime can handle RawMem [1<<50 - 1]byte // 48-5*8 = 8 bytes left to pad stackHeaderPadding struct { a uintptr } ) type bits []int func newBits(n int) (r bits) { return make(bits, (n+63)>>6) } func (b bits) has(n int) bool { return b != nil && b[n>>6]&(1<<uint(n&63)) != 0 } func (b bits) set(n int) { b[n>>6] |= 1 << uint(n&63) } func Xstrchrnul(tls *TLS, s uintptr, c int32) (r uintptr) { if __ccgo_strace { trc("tls=%v s=%v c=%v, (%v:)", tls, s, c, origin(2)) defer func() { trc("-> %v", r) }() } var k types.Size_t var w uintptr _, _ = k, w c = int32(uint8(uint8(c))) if !(c != 0) { return s + uintptr(Xstrlen(tls, s)) } for { if !(uint64(uint64(s))%Uint64FromInt64(8) != 0) { break } if !(*(*int8)(unsafe.Pointer(s)) != 0) || int32(*(*uint8)(unsafe.Pointer(s))) == c { return s } goto _1 _1: s++ } k = uint64(-Int32FromInt32(1)) / Uint64FromInt32(limits.UCHAR_MAX) * uint64(uint64(c)) w = s for { if !(!((*(*uint64)(unsafe.Pointer(w))-uint64(-Int32FromInt32(1))/Uint64FromInt32(limits.UCHAR_MAX)) & ^*(*uint64)(unsafe.Pointer(w)) & (uint64(-Int32FromInt32(1))/Uint64FromInt32(limits.UCHAR_MAX)*uint64(Int32FromInt32(limits.UCHAR_MAX)/Int32FromInt32(2)+Int32FromInt32(1))) != 0) && !((*(*uint64)(unsafe.Pointer(w))^k-uint64(-Int32FromInt32(1))/Uint64FromInt32(limits.UCHAR_MAX)) & ^(*(*uint64)(unsafe.Pointer(w))^k) & (uint64(-Int32FromInt32(1))/Uint64FromInt32(limits.UCHAR_MAX)*uint64(Int32FromInt32(limits.UCHAR_MAX)/Int32FromInt32(2)+Int32FromInt32(1))) != 0)) { break } goto _2 _2: w += 8 } s = w for { if !(*(*int8)(unsafe.Pointer(s)) != 0 && int32(*(*uint8)(unsafe.Pointer(s))) != c) { break } goto _3 _3: s++ } return s }