github.com/dorkamotorka/go/src@v0.0.0-20230614113921-187095f0e316/syscall/asm_linux_loong64.s (about) 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 // 8 // System calls for loong64, Linux 9 // 10 11 // func rawVforkSyscall(trap, a1, a2 uintptr) (r1, err uintptr) 12 TEXT ·rawVforkSyscall(SB),NOSPLIT,$0-40 13 MOVV a1+8(FP), R4 14 MOVV a2+16(FP), R5 15 MOVV $0, R6 16 MOVV $0, R7 17 MOVV $0, R8 18 MOVV $0, R9 19 MOVV trap+0(FP), R11 // syscall entry 20 SYSCALL 21 MOVW $-4096, R12 22 BGEU R12, R4, ok 23 MOVV $-1, R12 24 MOVV R12, r1+24(FP) // r1 25 SUBVU R4, R0, R4 26 MOVV R4, err+32(FP) // errno 27 RET 28 ok: 29 MOVV R4, r1+24(FP) // r1 30 MOVV R0, err+32(FP) // errno 31 RET 32 33 TEXT ·rawSyscallNoError(SB),NOSPLIT,$0-48 34 MOVV a1+8(FP), R4 35 MOVV a2+16(FP), R5 36 MOVV a3+24(FP), R6 37 MOVV R0, R7 38 MOVV R0, R8 39 MOVV R0, R9 40 MOVV trap+0(FP), R11 // syscall entry 41 SYSCALL 42 MOVV R4, r1+32(FP) 43 MOVV R0, r2+40(FP) // r2 is not used. Always set to 0. 44 RET