mirror of
https://github.com/netbirdio/gvisor.git
synced 2026-05-22 17:12:49 -07:00
Konstantin Bogomolov
4a0bf841d9
In practice we don't seem to ever use it. PiperOrigin-RevId: 681073641
98 lines
2.1 KiB
ArmAsm
98 lines
2.1 KiB
ArmAsm
// Copyright 2024 The gVisor Authors.
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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#include "textflag.h"
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// func RawSyscall6(trap, a1, a2, a3, a4, a5, a6 uintptr) (r1, errno)
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TEXT ·RawSyscall6(SB),NOSPLIT,$0-72
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MOVD trap+0(FP), R8 // syscall entry
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MOVD a1+8(FP), R0
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MOVD a2+16(FP), R1
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MOVD a3+24(FP), R2
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MOVD a4+32(FP), R3
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MOVD a5+40(FP), R4
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MOVD a6+48(FP), R5
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SVC
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CMN $4095, R0
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BCC ok
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MOVD $-1, R4
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MOVD R4, r1+56(FP)
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NEG R0, R0
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MOVD R0, errno+64(FP)
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RET
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ok:
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MOVD R0, r1+56(FP)
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MOVD ZR, errno+64(FP)
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RET
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// func RawSyscall(trap, a1, a2, a3 uintptr) (r1, errno)
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TEXT ·RawSyscall(SB),NOSPLIT,$0-48
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MOVD trap+0(FP), R8 // syscall entry
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MOVD a1+8(FP), R0
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MOVD a2+16(FP), R1
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MOVD a3+24(FP), R2
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MOVD ZR, R3
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MOVD ZR, R4
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MOVD ZR, R5
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SVC
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CMN $4095, R0
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BCC ok
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MOVD $-1, R4
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MOVD R4, r1+32(FP)
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NEG R0, R0
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MOVD R0, errno+40(FP)
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RET
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ok:
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MOVD R0, r1+32(FP)
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MOVD ZR, errno+40(FP)
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RET
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// func RawSyscallErrno6(trap, a1, a2, a3, a4, a5, a6 uintptr) (errno unix.Errno)
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TEXT ·RawSyscallErrno6(SB),NOSPLIT,$0-64
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MOVD trap+0(FP), R8 // syscall entry
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MOVD a1+8(FP), R0
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MOVD a2+16(FP), R1
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MOVD a3+24(FP), R2
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MOVD a4+32(FP), R3
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MOVD a5+40(FP), R4
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MOVD a6+48(FP), R5
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SVC
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CMN $4095, R0
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BCC ok
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NEG R0, R0
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MOVD R0, ret+56(FP) // errno
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RET
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ok:
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MOVD ZR, ret+56(FP) // errno
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RET
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// func RawSyscallErrno(trap, a1, a2, a3 uintptr) (errno unix.Errno)
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TEXT ·RawSyscallErrno(SB),NOSPLIT,$0-40
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MOVD trap+0(FP), R8 // syscall entry
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MOVD a1+8(FP), R0
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MOVD a2+16(FP), R1
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MOVD a3+24(FP), R2
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MOVD ZR, R3
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MOVD ZR, R4
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MOVD ZR, R5
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SVC
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CMN $4095, R0
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BCC ok
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NEG R0, R0
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MOVD R0, ret+32(FP) // errno
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RET
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ok:
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MOVD ZR, ret+32(FP) // errno
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RET
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