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58a48a3e3b
Updates #40724 Change-Id: I07a01ac1bda71214f01f4a72e15ab469ef275725 Reviewed-on: https://go-review.googlesource.com/c/go/+/719423 Reviewed-by: Vishwanatha HD <vishwanatha.hd@ibm.com> Reviewed-by: Keith Randall <khr@google.com> Reviewed-by: David Chase <drchase@google.com> Reviewed-by: Keith Randall <khr@golang.org> LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com>
48 lines
954 B
ArmAsm
48 lines
954 B
ArmAsm
// Copyright 2022 The Go Authors. All rights reserved.
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// Use of this source code is governed by a BSD-style
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// license that can be found in the LICENSE file.
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#include "textflag.h"
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// func Syscall6(num, a1, a2, a3, a4, a5, a6 uintptr) (r1, r2, errno uintptr)
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TEXT ยทSyscall6<ABIInternal>(SB),NOSPLIT,$0-80
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#ifdef GOEXPERIMENT_regabiargs
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MOVD R2, R1
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MOVD R3, R2
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MOVD R4, R3
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MOVD R5, R4
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MOVD R6, R5
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MOVD R7, R6
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MOVD R8, R7
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#else
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MOVD num+0(FP), R1 // syscall entry
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MOVD a1+8(FP), R2
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MOVD a2+16(FP), R3
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MOVD a3+24(FP), R4
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MOVD a4+32(FP), R5
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MOVD a5+40(FP), R6
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MOVD a6+48(FP), R7
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#endif
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SYSCALL
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MOVD $0xfffffffffffff001, R8
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CMPUBLT R2, R8, ok
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#ifdef GOEXPERIMENT_regabiargs
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MOVD $0, R3
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NEG R2, R4
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MOVD $-1, R2
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#else
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MOVD $-1, r1+56(FP)
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MOVD $0, r2+64(FP)
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NEG R2, R2
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MOVD R2, errno+72(FP)
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#endif
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RET
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ok:
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#ifdef GOEXPERIMENT_regabiargs
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MOVD $0, R4
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#else
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MOVD R2, r1+56(FP)
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MOVD R3, r2+64(FP)
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MOVD $0, errno+72(FP)
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#endif
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RET
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