Adding upstream version 1.65.7.

Signed-off-by: Daniel Baumann <daniel@debian.org>

libc32.go

@@ -0,0 +1,81 @@
+// 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 !linux && (arm || 386)
+
+package libc // import "modernc.org/libc"
+
+import (
+	"unsafe"
+
+	"modernc.org/libc/limits"
+	"modernc.org/libc/sys/types"
+)
+
+const (
+	heapSize = 1 << 30 // Adjust for your debugging session requirements and system RAM size.
+)
+
+type (
+	// RawMem represents the biggest byte array the runtime can handle
+	RawMem [1<<31 - 1]byte
+
+	// 32-5*4 = 12 bytes left to pad
+	stackHeaderPadding struct {
+		a uintptr
+		b uintptr
+		c uintptr
+	}
+)
+
+type bits []int
+
+func newBits(n int) (r bits)  { return make(bits, (n+31)>>5) }
+func (b bits) has(n int) bool { return b != nil && b[n>>5]&(1<<uint(n&31)) != 0 }
+func (b bits) set(n int)      { b[n>>5] |= 1 << uint(n&31) }
+
+func Xstrchrnul(tls *TLS, s uintptr, c int32) (r uintptr) {
+	return x___strchrnul(tls, s, c)
+}
+
+func x___strchrnul(tls *TLS, s uintptr, c int32) (r uintptr) {
+	var k types.Size_t
+	var w uintptr
+	_, _ = k, w
+	c = int32(uint8(c))
+	if !(c != 0) {
+		return s + uintptr(Xstrlen(tls, s))
+	}
+	for {
+		if !(uint32(s)%Uint32FromInt64(4) != 0) {
+			break
+		}
+		if !(*(*int8)(unsafe.Pointer(s)) != 0) || int32(*(*uint8)(unsafe.Pointer(s))) == c {
+			return s
+		}
+		goto _1
+	_1:
+		s++
+	}
+	k = uint32(-Int32FromInt32(1)) / Uint32FromInt32(limits.UCHAR_MAX) * uint32(c)
+	w = s
+	for {
+		if !(!((*(*uint32)(unsafe.Pointer(w))-uint32(-Int32FromInt32(1))/Uint32FromInt32(limits.UCHAR_MAX)) & ^*(*uint32)(unsafe.Pointer(w)) & (uint32(-Int32FromInt32(1))/Uint32FromInt32(limits.UCHAR_MAX)*uint32(Int32FromInt32(limits.UCHAR_MAX)/Int32FromInt32(2)+Int32FromInt32(1))) != 0) && !((*(*uint32)(unsafe.Pointer(w))^k-uint32(-Int32FromInt32(1))/Uint32FromInt32(limits.UCHAR_MAX)) & ^(*(*uint32)(unsafe.Pointer(w))^k) & (uint32(-Int32FromInt32(1))/Uint32FromInt32(limits.UCHAR_MAX)*uint32(Int32FromInt32(limits.UCHAR_MAX)/Int32FromInt32(2)+Int32FromInt32(1))) != 0)) {
+			break
+		}
+		goto _2
+	_2:
+		w += 4
+	}
+	s = w
+	for {
+		if !(*(*int8)(unsafe.Pointer(s)) != 0 && int32(*(*uint8)(unsafe.Pointer(s))) != c) {
+			break
+		}
+		goto _3
+	_3:
+		s++
+	}
+	return s
+}