// Copyright 2022 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.

#include "go_asm.h"
#include "textflag.h"

// func memclrNoHeapPointers(ptr unsafe.Pointer, n uintptr)
TEXT runtime·memclrNoHeapPointers<ABIInternal>(SB),NOSPLIT,$0-16
	ADDV	R4, R5, R6

	// if less than 8 bytes, do one byte at a time
	SGTU	$8, R5, R8
	BNE	R8, out

			}
			*p = memHdr{}
			return unsafe.Pointer(p)
		}
		prevp = p
	}
	return sbrk(n)
}

func memFree(ap unsafe.Pointer, n uintptr) {
	n = memRound(n)
	memclrNoHeapPointers(ap, n)
	bp := (*memHdr)(ap)
	bp.size = n
	bpn := uintptr(ap)
	if memFreelist == 0 {
		bp.next = 0
		memFreelist.set(bp)
		return
	}
	p := memFreelist.ptr()
	if bpn < uintptr(unsafe.Pointer(p)) {

// Copyright 2016 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.

#include "textflag.h"

// See memclrNoHeapPointers Go doc for important implementation constraints.

// void runtime·memclrNoHeapPointers(void*, uintptr)
TEXT runtime·memclrNoHeapPointers<ABIInternal>(SB),NOSPLIT,$0-16
	// X10 = ptr
	// X11 = n

		throw("runtime: internal error")
	}

	if f.list != nil {
		v := unsafe.Pointer(f.list)
		f.list = f.list.next
		f.inuse += f.size
		if f.zero {
			memclrNoHeapPointers(v, f.size)
		}
		return v
	}
	if uintptr(f.nchunk) < f.size {
		f.chunk = uintptr(persistentalloc(uintptr(f.nalloc), 0, f.stat))
		f.nchunk = f.nalloc
	}

	v := unsafe.Pointer(f.chunk)

	{"runtime.panicunsafeslicenilptr", 1},
	{"runtime.unsafestringcheckptr", 1},
	{"runtime.panicunsafestringlen", 1},
	{"runtime.panicunsafestringnilptr", 1},
	{"runtime.memmove", 1},
	{"runtime.memclrNoHeapPointers", 1},
	{"runtime.memclrHasPointers", 1},
	{"runtime.memequal", 1},
	{"runtime.memequal0", 1},
	{"runtime.memequal8", 1},
	{"runtime.memequal16", 1},
	{"runtime.memequal32", 1},