int i386_set_ldt(int, const union ldt_entry *, int);

*/

// setldt(int entry, int address, int limit)
TEXT runtime·setldt(SB),NOSPLIT,$32
	MOVL	base+4(FP), BX
	// see comment in sys_linux_386.s; freebsd is similar
	ADDL	$0x4, BX

	// set up data_desc
	LEAL	16(SP), AX	// struct data_desc
	MOVL	$0, 0(AX)
	MOVL	$0, 4(AX)

	MOVW	BX, 2(AX)
	SHRL	$16, BX
	MOVB	BX, 4(AX)
	SHRL	$8, BX

	//TODO VFMINV V11.S4, F9                   // 69f9b06e
	//TODO VFMLA V6.S[0], F2, F14              // 4e10865f
	//TODO VFMLA V28.S[2], V2.S2, V30.S2       // 5e189c0f
	VFMLA V29.S2, V20.S2, V14.S2               // 8ece3d0e
	//TODO VFMLS V24.D[1], F3, F17             // 7158d85f
	//TODO VFMLS V10.S[0], V11.S2, V10.S2      // 6a518a0f
	VFMLS V29.S2, V27.S2, V17.S2               // 71cfbd0e

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

//go:build msan

#include "go_asm.h"
#include "go_tls.h"
#include "funcdata.h"
#include "textflag.h"

// This is like race_amd64.s, but for the msan calls.
// See race_amd64.s for detailed comments.

#ifdef GOOS_windows
#define RARG0 CX
#define RARG1 DX
#define RARG2 R8
#define RARG3 R9
#else
#define RARG0 DI
#define RARG1 SI
#define RARG2 DX

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

// The runtime package uses //go:linkname to push a few functions into this
// package but we still need a .s file so the Go tool does not pass -complete
// to the go tool compile so the latter does not complain about Go functions

	MOVW $SYS_clock_gettime, R7
	SWI $0

	MOVW 8(R13), R0 // sec.low
	MOVW 12(R13), R4 // sec.high
	MOVW 16(R13), R2 // nsec

	MOVW $1000000000, R3
	MULLU R0, R3, (R1, R0)
	MUL R3, R4
	ADD.S R2, R0
	ADC R4, R1

	MOVW R0, ret_lo+0(FP)
	MOVW R1, ret_hi+4(FP)
	RET

TEXT runtime·asmSigaction(SB),NOSPLIT|NOFRAME,$0
	MOVW sig+0(FP), R0		// arg 1 sig
	MOVW new+4(FP), R1		// arg 2 act

// Inferno's libkern/vlop-arm.s
// https://bitbucket.org/inferno-os/inferno-os/src/master/libkern/vlop-arm.s
//
//         Copyright © 1994-1999 Lucent Technologies Inc. All rights reserved.
//         Revisions Copyright © 2000-2007 Vita Nuova Holdings Limited (www.vitanuova.com).  All rights reserved.
//         Portions Copyright 2009 The Go Authors. All rights reserved.
//
// Permission is hereby granted, free of charge, to any person obtaining a copy

	SRD     R9, R11, R11    // x[len(z)-2] >> s
	SLD     $3, R8, R12
	MOVD    (R6)(R12), R12
	SLD     R5, R12, R12    // x[len(z)-1]<<ŝ
	OR      R12, R11, R11   // x[len(z)-2]>>s | x[len(z)-1]<<ŝ
	MOVD    R11, (R3)(R10)  // z[len(z)-2]=x[len(z)-2]>>s | x[len(z)-1]<<ŝ
loopexit:
	ADD     $-1, R4
	SLD     $3, R4
	MOVD    (R6)(R4), R5
	SRD     R9, R5, R5      // x[len(z)-1]>>s
	MOVD    R5, (R3)(R4)    // z[len(z)-1]=x[len(z)-1]>>s

TEXT runtime·usleep(SB),NOSPLIT,$16-4
	MOVW	usec+0(FP), R3

	// Use magic constant 0x8637bd06 and shift right 51
	// to perform usec/1000000.
	MOVD	$0x8637bd06, R4
	MULLD	R3, R4, R4	// Convert usec to S.
	SRD	$51, R4, R4
	MOVD	R4, 8(R1)	// Store to tv_sec

	MOVD	$1000000, R5
	MULLW	R4, R5, R5	// Convert tv_sec back into uS
	SUB	R5, R3, R5	// Compute remainder uS.
	MULLD	$1000, R5, R5	// Convert to nsec

	VPADDD B, A, A; VPXOR A, D, D; VPSHUFB ·rol8<>(SB), D, D                          \
	VPADDD D, C, C; VPXOR C, B, B; VPSLLD $7, B, T; VPSRLD $25, B, B; VPXOR T, B, B

#define polyAdd(S) ADDQ S, acc0; ADCQ 8+S, acc1; ADCQ $1, acc2
#define polyMulStage1 MOVQ (0*8)(BP), AX; MOVQ AX, t2; MULQ acc0; MOVQ AX, t0; MOVQ DX, t1; MOVQ (0*8)(BP), AX; MULQ acc1; IMULQ acc2, t2; ADDQ AX, t1; ADCQ DX, t2

#include "funcdata.h"

// bool armcas(int32 *val, int32 old, int32 new)
// Atomically:
//	if(*val == old){
//		*val = new;
//		return 1;
//	}else
//		return 0;
//
// To implement ·cas in sys_$GOOS_arm.s
// using the native instructions, use:
//
//	TEXT ·cas(SB),NOSPLIT,$0
//		B	·armcas(SB)
//
TEXT ·armcas(SB),NOSPLIT,$0-13
	MOVW	ptr+0(FP), R1
	MOVW	old+4(FP), R2
	MOVW	new+8(FP), R3
casl:
	LDREX	(R1), R0