valgrind_arm64.s

Documentation: runtime

     1// Copyright 2025 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//go:build valgrind && linux
     6
     7#include "textflag.h"
     8
     9// See valgrind_amd64.s for notes about this assembly.
    10
    11// func valgrindClientRequest(uintptr, uintptr, uintptr, uintptr, uintptr, uintptr) (ret uintptr)
    12TEXT runtime·valgrindClientRequest(SB), NOSPLIT, $0-56
    13	// Load the address of the first of the (contiguous) arguments into x4.
    14	MOVD $args+0(FP), R4
    15
    16	// Zero x3, since some requests may not populate it.
    17	MOVD ZR, R3
    18
    19	// Emit the special preamble.
    20	ROR $3, R12; ROR $13, R12
    21	ROR $51, R12; ROR $61, R12
    22
    23	// "Execute" the client request.
    24	ORR R10, R10
    25
    26	// Copy the result out of x3.
    27	MOVD R3, ret+48(FP)
    28
    29	RET
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