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asm_linux_riscv64.s (1041B)

      1 // Copyright 2019 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 //go:build riscv64 && gc
      6 
      7 #include "textflag.h"
      8 
      9 //
     10 // System calls for linux/riscv64.
     11 //
     12 // Where available, just jump to package syscall's implementation of
     13 // these functions.
     14 
     15 TEXT ·Syscall(SB),NOSPLIT,$0-56
     16 	JMP	syscall·Syscall(SB)
     17 
     18 TEXT ·Syscall6(SB),NOSPLIT,$0-80
     19 	JMP	syscall·Syscall6(SB)
     20 
     21 TEXT ·SyscallNoError(SB),NOSPLIT,$0-48
     22 	CALL	runtime·entersyscall(SB)
     23 	MOV	a1+8(FP), A0
     24 	MOV	a2+16(FP), A1
     25 	MOV	a3+24(FP), A2
     26 	MOV	trap+0(FP), A7	// syscall entry
     27 	ECALL
     28 	MOV	A0, r1+32(FP)	// r1
     29 	MOV	A1, r2+40(FP)	// r2
     30 	CALL	runtime·exitsyscall(SB)
     31 	RET
     32 
     33 TEXT ·RawSyscall(SB),NOSPLIT,$0-56
     34 	JMP	syscall·RawSyscall(SB)
     35 
     36 TEXT ·RawSyscall6(SB),NOSPLIT,$0-80
     37 	JMP	syscall·RawSyscall6(SB)
     38 
     39 TEXT ·RawSyscallNoError(SB),NOSPLIT,$0-48
     40 	MOV	a1+8(FP), A0
     41 	MOV	a2+16(FP), A1
     42 	MOV	a3+24(FP), A2
     43 	MOV	trap+0(FP), A7	// syscall entry
     44 	ECALL
     45 	MOV	A0, r1+32(FP)
     46 	MOV	A1, r2+40(FP)
     47 	RET