// asan{read,write} are nosplit because they may be called between
// fork and exec, when the stack must not grow. See issue #50391.

//go:linkname asanread
//go:nosplit
func asanread(addr unsafe.Pointer, sz uintptr) {
	sp := getcallersp()
	pc := getcallerpc()
	doasanread(addr, sz, sp, pc)
}

//go:linkname asanwrite
//go:nosplit
func asanwrite(addr unsafe.Pointer, sz uintptr) {
	sp := getcallersp()

// license that can be found in the LICENSE file.

//go:build asan

package asan

import (
	"unsafe"
)

const Enabled = true

//go:linkname Read runtime.asanread
func Read(addr unsafe.Pointer, len uintptr)

//go:linkname Write runtime.asanwrite

package runtime

import (
	"unsafe"
)

const asanenabled = false

// Because asanenabled is false, none of these functions should be called.

func asanread(addr unsafe.Pointer, sz uintptr)            { throw("asan") }
func asanwrite(addr unsafe.Pointer, sz uintptr)           { throw("asan") }
func asanunpoison(addr unsafe.Pointer, sz uintptr)        { throw("asan") }

)

// Syms holds known symbols.
var Syms symsStruct

type symsStruct struct {
	AssertE2I         *obj.LSym
	AssertE2I2        *obj.LSym
	AssertI2I         *obj.LSym
	AssertI2I2        *obj.LSym
	Asanread          *obj.LSym
	Asanwrite         *obj.LSym
	CgoCheckMemmove   *obj.LSym
	CgoCheckPtrWrite  *obj.LSym
	CheckPtrAlignment *obj.LSym
	Deferproc         *obj.LSym
	Deferprocat       *obj.LSym

	}
	if raceenabled {
		racereadrangepc(unsafe.Pointer(ptr),
			uintptr(n),
			getcallerpc(),
			abi.FuncPCABIInternal(slicebytetostring))
	}
	if msanenabled {
		msanread(unsafe.Pointer(ptr), uintptr(n))
	}
	if asanenabled {
		asanread(unsafe.Pointer(ptr), uintptr(n))
	}
	if n == 1 {
		p := unsafe.Pointer(&staticuint64s[*ptr])
		if goarch.BigEndian {
			p = add(p, 7)
		}

		}
	}

	if raceenabled {
		callerpc := getcallerpc()
		pc := abi.FuncPCABIInternal(makeslicecopy)
		racereadrangepc(from, copymem, callerpc, pc)
	}
	if msanenabled {
		msanread(from, copymem)
	}
	if asanenabled {
		asanread(from, copymem)
	}

	memmove(to, from, copymem)

	return to
}

// makeslice should be an internal detail,
// but widely used packages access it using linkname.

			raceWriteObjectPC(c.elemtype, cas.elem, casePC(casi), chanrecvpc)
		}
	}
	if msanenabled {
		if casi < nsends {
			msanread(cas.elem, c.elemtype.Size_)
		} else if cas.elem != nil {
			msanwrite(cas.elem, c.elemtype.Size_)
		}
	}
	if asanenabled {
		if casi < nsends {
			asanread(cas.elem, c.elemtype.Size_)
		} else if cas.elem != nil {
			asanwrite(cas.elem, c.elemtype.Size_)
		}
	}

			// fall back to making the syscall directly.
			sysSigaction(sig, new, old)
		}
	}

	if msanenabled && old != nil {
		msanread(unsafe.Pointer(old), unsafe.Sizeof(*old))
	}
	if asanenabled && old != nil {
		asanread(unsafe.Pointer(old), unsafe.Sizeof(*old))
	}
}

// callCgoSigaction calls the sigaction function in the runtime/cgo package

	{"runtime.racefuncexit", 1},
	{"runtime.raceread", 1},
	{"runtime.racewrite", 1},
	{"runtime.racereadrange", 1},
	{"runtime.racewriterange", 1},
	{"runtime.msanread", 1},
	{"runtime.msanwrite", 1},
	{"runtime.msanmove", 1},
	{"runtime.asanread", 1},
	{"runtime.asanwrite", 1},
	{"runtime.checkptrAlignment", 1},
	{"runtime.checkptrArithmetic", 1},
	{"runtime.libfuzzerTraceCmp1", 1},

		raceReadObjectPC(typ, src, getcallerpc(), abi.FuncPCABIInternal(reflect_typedmemmove))
	}
	if msanenabled {
		msanwrite(dst, typ.Size_)
		msanread(src, typ.Size_)
	}
	if asanenabled {
		asanwrite(dst, typ.Size_)
		asanread(src, typ.Size_)
	}
	typedmemmove(typ, dst, src)
}

//go:linkname reflectlite_typedmemmove internal/reflectlite.typedmemmove