// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.

#include "textflag.h"
#include "cgo/abi_arm64.h"

TEXT _rt0_arm64_darwin(SB),NOSPLIT|NOFRAME,$0
	MOVD	$runtime·rt0_go(SB), R2
	BL	(R2)
exit:
	MOVD	$0, R0
	MOVD	$1, R16	// sys_exit
	SVC	$0x80
	B	exit

// When linking with -buildmode=c-archive or -buildmode=c-shared,

// appropriately so different callbacks start with different
// CALL instruction in runtime·callbackasm. This determines
// which Go callback function is executed later on.

TEXT runtime·callbackasm(SB),NOSPLIT|NOFRAME,$0
`)
	for i := 0; i < maxCallback; i++ {
		buf.WriteString("\tCALL\truntime·callbackasm1(SB)\n")
	}

	filename := fmt.Sprintf("zcallback_windows.s")
	err := os.WriteFile(filename, buf.Bytes(), 0666)

// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.

#include "textflag.h"

// func publicationBarrier()
TEXT ·publicationBarrier(SB),NOSPLIT|NOFRAME,$0-0
	FENCE

// Copyright 2023 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"

TEXT	·getFP(SB), NOSPLIT|NOFRAME, $0-8
	MOVD	R29, ret+0(FP)

// ppc64 code that will overwrite this register.
//
// If !iscgo, this is a no-op.
//
// NOTE: setg_gcc<> assume this clobbers only R31.
TEXT runtime·save_g(SB),NOSPLIT|NOFRAME,$0-0
#ifndef GOOS_aix
#ifndef GOOS_openbsd
	MOVBZ	runtime·iscgo(SB), R31
	CMP	R31, $0
	BEQ	nocgo
#endif
#endif
	MOVD	runtime·tls_g(SB), R31
	MOVD	g, 0(R31)

nocgo:
	RET

TEXT runtime·memequal(SB),NOSPLIT|NOFRAME,$0-13
	MOVW	a+0(FP), R0
	MOVW	b+4(FP), R2
	CMP	R0, R2
	B.EQ	eq
	MOVW	size+8(FP), R1
	CMP	$0, R1
	B.EQ	eq		// short path to handle 0-byte case
	MOVW	$ret+12(FP), R7
	B	memeqbody<>(SB)
eq:
	MOVW	$1, R0
	MOVB	R0, ret+12(FP)
	RET

// memequal_varlen(a, b unsafe.Pointer) bool
TEXT runtime·memequal_varlen(SB),NOSPLIT|NOFRAME,$0-9
	MOVW	a+0(FP), R0
	MOVW	b+4(FP), R2

//go:build linux && (mips64 || mips64le)

#include "textflag.h"

TEXT _rt0_mips64_linux(SB),NOSPLIT,$0
	JMP	_main<>(SB)

TEXT _rt0_mips64le_linux(SB),NOSPLIT,$0
	JMP	_main<>(SB)

TEXT _main<>(SB),NOSPLIT|NOFRAME,$0
	// In a statically linked binary, the stack contains argc,
	// argv as argc string pointers followed by a NULL, envv as a
	// sequence of string pointers followed by a NULL, and auxv.
	// There is no TLS base pointer.

// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.

#include "textflag.h"

// func syncIcache(p uintptr)
TEXT main·syncIcache(SB), NOSPLIT|NOFRAME, $0-0
	SYNC
	MOVD (R3), R3
	ICBI (R3)
	ISYNC

#define	CTXT	S10

// func memequal(a, b unsafe.Pointer, size uintptr) bool
TEXT runtime·memequal<ABIInternal>(SB),NOSPLIT|NOFRAME,$0-25
	// X10 = a_base
	// X11 = b_base
	// X12 = size
	JMP	memequal<>(SB)

// func memequal_varlen(a, b unsafe.Pointer) bool
TEXT runtime·memequal_varlen<ABIInternal>(SB),NOSPLIT|NOFRAME,$0-17
	MOV	8(CTXT), X12    // compiler stores size at offset 8 in the closure
	// X10 = a_base
	// X11 = b_base

// s390x code that will overwrite this register.
//
// If !iscgo, this is a no-op.
//
// NOTE: setg_gcc<> assume this clobbers only R10 and R11.
TEXT runtime·save_g(SB),NOSPLIT|NOFRAME,$0-0
	MOVB	runtime·iscgo(SB),  R10
	CMPBEQ	R10, $0, nocgo
	MOVW	AR0, R11
	SLD	$32, R11
	MOVW	AR1, R11
	MOVD	runtime·tls_g(SB), R10
	MOVD	g, 0(R10)(R11*1)
nocgo:
	RET