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Text file src/internal/runtime/syscall/asm_linux_s390x.s

Documentation: internal/runtime/syscall

     1// Copyright 2022 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 "textflag.h"
     6
     7// func Syscall6(num, a1, a2, a3, a4, a5, a6 uintptr) (r1, r2, errno uintptr)
     8TEXT ·Syscall6(SB),NOSPLIT,$0-80
     9	MOVD	num+0(FP), R1	// syscall entry
    10	MOVD	a1+8(FP), R2
    11	MOVD	a2+16(FP), R3
    12	MOVD	a3+24(FP), R4
    13	MOVD	a4+32(FP), R5
    14	MOVD	a5+40(FP), R6
    15	MOVD	a6+48(FP), R7
    16	SYSCALL
    17	MOVD	$0xfffffffffffff001, R8
    18	CMPUBLT	R2, R8, ok
    19	MOVD	$-1, r1+56(FP)
    20	MOVD	$0, r2+64(FP)
    21	NEG	R2, R2
    22	MOVD	R2, errno+72(FP)
    23	RET
    24ok:
    25	MOVD	R2, r1+56(FP)
    26	MOVD	R3, r2+64(FP)
    27	MOVD	$0, errno+72(FP)
    28	RET

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