github.com/hikaru7719/go@v0.0.0-20181025140707-c8b2ac68906a/src/runtime/msan_arm64.s (about)

     1  // Copyright 2018 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  // +build msan
     6  
     7  #include "go_asm.h"
     8  #include "textflag.h"
     9  
    10  #define RARG0 R0
    11  #define RARG1 R1
    12  #define FARG R3
    13  
    14  // func runtime·domsanread(addr unsafe.Pointer, sz uintptr)
    15  // Called from msanread.
    16  TEXT	runtime·domsanread(SB), NOSPLIT, $0-16
    17  	MOVD	addr+0(FP), RARG0
    18  	MOVD	size+8(FP), RARG1
    19  	// void __msan_read_go(void *addr, uintptr_t sz);
    20  	MOVD	$__msan_read_go(SB), FARG
    21  	JMP	msancall<>(SB)
    22  
    23  // func runtime·msanwrite(addr unsafe.Pointer, sz uintptr)
    24  // Called from instrumented code.
    25  TEXT	runtime·msanwrite(SB), NOSPLIT, $0-16
    26  	MOVD	addr+0(FP), RARG0
    27  	MOVD	size+8(FP), RARG1
    28  	// void __msan_write_go(void *addr, uintptr_t sz);
    29  	MOVD	$__msan_write_go(SB), FARG
    30  	JMP	msancall<>(SB)
    31  
    32  // func runtime·msanmalloc(addr unsafe.Pointer, sz uintptr)
    33  TEXT	runtime·msanmalloc(SB), NOSPLIT, $0-16
    34  	MOVD	addr+0(FP), RARG0
    35  	MOVD	size+8(FP), RARG1
    36  	// void __msan_malloc_go(void *addr, uintptr_t sz);
    37  	MOVD	$__msan_malloc_go(SB), FARG
    38  	JMP	msancall<>(SB)
    39  
    40  // func runtime·msanfree(addr unsafe.Pointer, sz uintptr)
    41  TEXT	runtime·msanfree(SB), NOSPLIT, $0-16
    42  	MOVD	addr+0(FP), RARG0
    43  	MOVD	size+8(FP), RARG1
    44  	// void __msan_free_go(void *addr, uintptr_t sz);
    45  	MOVD	$__msan_free_go(SB), FARG
    46  	JMP	msancall<>(SB)
    47  
    48  // Switches SP to g0 stack and calls (FARG). Arguments already set.
    49  TEXT	msancall<>(SB), NOSPLIT, $0-0
    50  	MOVD	g_m(g), R10
    51  	MOVD	m_g0(R10), R11
    52  	MOVD	RSP, R19	// callee-saved
    53  	CMP	R11, g
    54  	BEQ	g0stack
    55  
    56  	MOVD	(g_sched+gobuf_sp)(R11), R4
    57  	MOVD	R4, RSP
    58  
    59  g0stack:
    60  	BL	(FARG)
    61  	MOVD	R19, RSP
    62  	RET