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https://github.com/golang/go
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58 lines
1.3 KiB
ArmAsm
58 lines
1.3 KiB
ArmAsm
// Copyright 2009 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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//
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// System calls for arm, Linux
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//
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// TODO(kaib): handle error returns
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// func Syscall(syscall uintptr, a1, a2, a3 uintptr) (r1, r2, err uintptr);
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TEXT syscall·Syscall(SB),7,$0
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BL runtime·entersyscall(SB)
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MOVW 4(SP), R7
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MOVW 8(SP), R0
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MOVW 12(SP), R1
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MOVW 16(SP), R2
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SWI $0
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MOVW R0, 20(SP) // r1
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MOVW R1, 24(SP) // r2
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MOVW $0, R0
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MOVW R0, 28(SP) // errno
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BL runtime·exitsyscall(SB)
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RET
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// func Syscall6(trap uintptr, a1, a2, a3, a4, a5, a6 uintptr) (r1, r2, err uintptr);
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// Actually Syscall5 but the rest of the code expects it to be named Syscall6.
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TEXT syscall·Syscall6(SB),7,$0
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BL runtime·entersyscall(SB)
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MOVW 4(SP), R7 // syscall entry
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MOVW 8(SP), R0
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MOVW 12(SP), R1
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MOVW 16(SP), R2
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MOVW 20(SP), R3
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MOVW 24(SP), R4
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MOVW 28(SP), R5
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SWI $0
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MOVW R0, 32(SP) // r1
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MOVW R1, 36(SP) // r2
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MOVW $0, R0
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MOVW R0, 40(SP) // errno
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BL runtime·exitsyscall(SB)
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RET
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// func RawSyscall(trap uintptr, a1, a2, a3 uintptr) (r1, r2, err uintptr);
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TEXT syscall·RawSyscall(SB),7,$0
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MOVW 4(SP), R7 // syscall entry
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MOVW 8(SP), R0
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MOVW 12(SP), R1
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MOVW 16(SP), R2
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SWI $0
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MOVW R0, 20(SP) // r1
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MOVW R1, 24(SP) // r2
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MOVW $0, R0
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MOVW R0, 28(SP) // errno
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RET
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