diff options
Diffstat (limited to 'src/syscall/asm_linux_arm64.s')
| -rw-r--r-- | src/syscall/asm_linux_arm64.s | 141 |
1 files changed, 141 insertions, 0 deletions
diff --git a/src/syscall/asm_linux_arm64.s b/src/syscall/asm_linux_arm64.s new file mode 100644 index 0000000..fb22f8d --- /dev/null +++ b/src/syscall/asm_linux_arm64.s @@ -0,0 +1,141 @@ +// Copyright 2015 The Go Authors. All rights reserved. +// Use of this source code is governed by a BSD-style +// license that can be found in the LICENSE file. + +#include "textflag.h" + +// func Syscall(trap int64, a1, a2, a3 int64) (r1, r2, err int64); +TEXT ·Syscall(SB),NOSPLIT,$0-56 + BL runtime·entersyscall(SB) + MOVD a1+8(FP), R0 + MOVD a2+16(FP), R1 + MOVD a3+24(FP), R2 + MOVD $0, R3 + MOVD $0, R4 + MOVD $0, R5 + MOVD trap+0(FP), R8 // syscall entry + SVC + CMN $4095, R0 + BCC ok + MOVD $-1, R4 + MOVD R4, r1+32(FP) // r1 + MOVD ZR, r2+40(FP) // r2 + NEG R0, R0 + MOVD R0, err+48(FP) // errno + BL runtime·exitsyscall(SB) + RET +ok: + MOVD R0, r1+32(FP) // r1 + MOVD R1, r2+40(FP) // r2 + MOVD ZR, err+48(FP) // errno + BL runtime·exitsyscall(SB) + RET + +TEXT ·Syscall6(SB),NOSPLIT,$0-80 + BL runtime·entersyscall(SB) + MOVD a1+8(FP), R0 + MOVD a2+16(FP), R1 + MOVD a3+24(FP), R2 + MOVD a4+32(FP), R3 + MOVD a5+40(FP), R4 + MOVD a6+48(FP), R5 + MOVD trap+0(FP), R8 // syscall entry + SVC + CMN $4095, R0 + BCC ok + MOVD $-1, R4 + MOVD R4, r1+56(FP) // r1 + MOVD ZR, r2+64(FP) // r2 + NEG R0, R0 + MOVD R0, err+72(FP) // errno + BL runtime·exitsyscall(SB) + RET +ok: + MOVD R0, r1+56(FP) // r1 + MOVD R1, r2+64(FP) // r2 + MOVD ZR, err+72(FP) // errno + BL runtime·exitsyscall(SB) + RET + +TEXT ·RawSyscall(SB),NOSPLIT,$0-56 + MOVD a1+8(FP), R0 + MOVD a2+16(FP), R1 + MOVD a3+24(FP), R2 + MOVD $0, R3 + MOVD $0, R4 + MOVD $0, R5 + MOVD trap+0(FP), R8 // syscall entry + SVC + CMN $4095, R0 + BCC ok + MOVD $-1, R4 + MOVD R4, r1+32(FP) // r1 + MOVD ZR, r2+40(FP) // r2 + NEG R0, R0 + MOVD R0, err+48(FP) // errno + RET +ok: + MOVD R0, r1+32(FP) // r1 + MOVD R1, r2+40(FP) // r2 + MOVD ZR, err+48(FP) // errno + RET + +TEXT ·RawSyscall6(SB),NOSPLIT,$0-80 + MOVD a1+8(FP), R0 + MOVD a2+16(FP), R1 + MOVD a3+24(FP), R2 + MOVD a4+32(FP), R3 + MOVD a5+40(FP), R4 + MOVD a6+48(FP), R5 + MOVD trap+0(FP), R8 // syscall entry + SVC + CMN $4095, R0 + BCC ok + MOVD $-1, R4 + MOVD R4, r1+56(FP) // r1 + MOVD ZR, r2+64(FP) // r2 + NEG R0, R0 + MOVD R0, err+72(FP) // errno + RET +ok: + MOVD R0, r1+56(FP) // r1 + MOVD R1, r2+64(FP) // r2 + MOVD ZR, err+72(FP) // errno + RET + +// func rawVforkSyscall(trap, a1 uintptr) (r1, err uintptr) +TEXT ·rawVforkSyscall(SB),NOSPLIT,$0-32 + MOVD a1+8(FP), R0 + MOVD $0, R1 + MOVD $0, R2 + MOVD $0, R3 + MOVD $0, R4 + MOVD $0, R5 + MOVD trap+0(FP), R8 // syscall entry + SVC + CMN $4095, R0 + BCC ok + MOVD $-1, R4 + MOVD R4, r1+16(FP) // r1 + NEG R0, R0 + MOVD R0, err+24(FP) // errno + RET +ok: + MOVD R0, r1+16(FP) // r1 + MOVD ZR, err+24(FP) // errno + RET + + +// func rawSyscallNoError(trap uintptr, a1, a2, a3 uintptr) (r1, r2 uintptr); +TEXT ·rawSyscallNoError(SB),NOSPLIT,$0-48 + MOVD a1+8(FP), R0 + MOVD a2+16(FP), R1 + MOVD a3+24(FP), R2 + MOVD $0, R3 + MOVD $0, R4 + MOVD $0, R5 + MOVD trap+0(FP), R8 // syscall entry + SVC + MOVD R0, r1+32(FP) + MOVD R1, r2+40(FP) + RET |