Text file src/runtime/tls_arm64.s

     1	// Copyright 2015 The Go Authors. All rights reserved.
     2	// Use of this source code is governed by a BSD-style
     3	// license that can be found in the LICENSE file.
     4	
     5	#include "go_asm.h"
     6	#include "go_tls.h"
     7	#include "funcdata.h"
     8	#include "textflag.h"
     9	#include "tls_arm64.h"
    10	
    11	TEXT runtime·load_g(SB),NOSPLIT,$0
    12		MOVB	runtime·iscgo(SB), R0
    13		CMP	$0, R0
    14		BEQ	nocgo
    15	
    16		MRS_TPIDR_R0
    17	#ifdef GOOS_darwin
    18		// Darwin sometimes returns unaligned pointers
    19		AND	$0xfffffffffffffff8, R0
    20	#endif
    21		MOVD	runtime·tls_g(SB), R27
    22		ADD	R27, R0
    23		MOVD	0(R0), g
    24	
    25	nocgo:
    26		RET
    27	
    28	TEXT runtime·save_g(SB),NOSPLIT,$0
    29		MOVB	runtime·iscgo(SB), R0
    30		CMP	$0, R0
    31		BEQ	nocgo
    32	
    33		MRS_TPIDR_R0
    34	#ifdef GOOS_darwin
    35		// Darwin sometimes returns unaligned pointers
    36		AND	$0xfffffffffffffff8, R0
    37	#endif
    38		MOVD	runtime·tls_g(SB), R27
    39		ADD	R27, R0
    40		MOVD	g, 0(R0)
    41	
    42	nocgo:
    43		RET
    44	
    45	#ifdef TLSG_IS_VARIABLE
    46	#ifdef GOOS_android
    47	// Use the free TLS_SLOT_APP slot #2 on Android Q.
    48	// Earlier androids are set up in gcc_android.c.
    49	DATA runtime·tls_g+0(SB)/8, $16
    50	#endif
    51	GLOBL runtime·tls_g+0(SB), NOPTR, $8
    52	#else
    53	GLOBL runtime·tls_g+0(SB), TLSBSS, $8
    54	#endif

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