| // Copyright 2016 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. |
| |
| // +build linux |
| // +build mips mipsle |
| |
| #include "textflag.h" |
| #include "funcdata.h" |
| |
| // |
| // System calls for mips, Linux |
| // |
| |
| // func Syscall(trap uintptr, a1, a2, a3 uintptr) (r1, r2, err uintptr); |
| TEXT ·Syscall(SB),NOSPLIT,$0-28 |
| JAL runtime·entersyscall(SB) |
| MOVW a1+4(FP), R4 |
| MOVW a2+8(FP), R5 |
| MOVW a3+12(FP), R6 |
| MOVW R0, R7 |
| MOVW trap+0(FP), R2 // syscall entry |
| SYSCALL |
| BEQ R7, ok |
| MOVW $-1, R1 |
| MOVW R1, r1+16(FP) // r1 |
| MOVW R0, r2+20(FP) // r2 |
| MOVW R2, err+24(FP) // errno |
| JAL runtime·exitsyscall(SB) |
| RET |
| ok: |
| MOVW R2, r1+16(FP) // r1 |
| MOVW R3, r2+20(FP) // r2 |
| MOVW R0, err+24(FP) // errno |
| JAL runtime·exitsyscall(SB) |
| RET |
| |
| // func Syscall6(trap trap, a1, a2, a3, a4, a5, a6 uintptr) (r1, r2, err uintptr); |
| // 5th and 6th arg go at sp+16, sp+20. |
| // Note that frame size of 20 means that 24 bytes gets reserved on stack. |
| TEXT ·Syscall6(SB),NOSPLIT,$20-40 |
| NO_LOCAL_POINTERS |
| JAL runtime·entersyscall(SB) |
| MOVW a1+4(FP), R4 |
| MOVW a2+8(FP), R5 |
| MOVW a3+12(FP), R6 |
| MOVW a4+16(FP), R7 |
| MOVW a5+20(FP), R8 |
| MOVW a6+24(FP), R9 |
| MOVW R8, 16(R29) |
| MOVW R9, 20(R29) |
| MOVW trap+0(FP), R2 // syscall entry |
| SYSCALL |
| BEQ R7, ok6 |
| MOVW $-1, R1 |
| MOVW R1, r1+28(FP) // r1 |
| MOVW R0, r2+32(FP) // r2 |
| MOVW R2, err+36(FP) // errno |
| JAL runtime·exitsyscall(SB) |
| RET |
| ok6: |
| MOVW R2, r1+28(FP) // r1 |
| MOVW R3, r2+32(FP) // r2 |
| MOVW R0, err+36(FP) // errno |
| JAL runtime·exitsyscall(SB) |
| RET |
| |
| // func Syscall9(trap trap, a1, a2, a3, a4, a5, a6, a7, a8, a9 uintptr) (r1, r2, err uintptr); |
| // Actually Syscall8 but the rest of the code expects it to be named Syscall9. |
| TEXT ·Syscall9(SB),NOSPLIT,$28-52 |
| NO_LOCAL_POINTERS |
| JAL runtime·entersyscall(SB) |
| MOVW a1+4(FP), R4 |
| MOVW a2+8(FP), R5 |
| MOVW a3+12(FP), R6 |
| MOVW a4+16(FP), R7 |
| MOVW a5+20(FP), R8 |
| MOVW a6+24(FP), R9 |
| MOVW a7+28(FP), R10 |
| MOVW a8+32(FP), R11 |
| MOVW R8, 16(R29) |
| MOVW R9, 20(R29) |
| MOVW R10, 24(R29) |
| MOVW R11, 28(R29) |
| MOVW trap+0(FP), R2 // syscall entry |
| SYSCALL |
| BEQ R7, ok9 |
| MOVW $-1, R1 |
| MOVW R1, r1+40(FP) // r1 |
| MOVW R0, r2+44(FP) // r2 |
| MOVW R2, err+48(FP) // errno |
| JAL runtime·exitsyscall(SB) |
| RET |
| ok9: |
| MOVW R2, r1+40(FP) // r1 |
| MOVW R3, r2+44(FP) // r2 |
| MOVW R0, err+48(FP) // errno |
| JAL runtime·exitsyscall(SB) |
| RET |
| |
| TEXT ·RawSyscall(SB),NOSPLIT,$24-28 |
| MOVW a1+4(FP), R4 |
| MOVW a2+8(FP), R5 |
| MOVW a3+12(FP), R6 |
| MOVW trap+0(FP), R2 // syscall entry |
| SYSCALL |
| BEQ R7, ok1 |
| MOVW $-1, R1 |
| MOVW R1, r1+16(FP) // r1 |
| MOVW R0, r2+20(FP) // r2 |
| MOVW R2, err+24(FP) // errno |
| RET |
| ok1: |
| MOVW R2, r1+16(FP) // r1 |
| MOVW R3, r2+20(FP) // r2 |
| MOVW R0, err+24(FP) // errno |
| RET |
| |
| TEXT ·RawSyscall6(SB),NOSPLIT,$20-40 |
| MOVW a1+4(FP), R4 |
| MOVW a2+8(FP), R5 |
| MOVW a3+12(FP), R6 |
| MOVW a4+16(FP), R7 |
| MOVW a5+20(FP), R8 |
| MOVW a6+24(FP), R9 |
| MOVW R8, 16(R29) |
| MOVW R9, 20(R29) |
| MOVW trap+0(FP), R2 // syscall entry |
| SYSCALL |
| BEQ R7, ok2 |
| MOVW $-1, R1 |
| MOVW R1, r1+28(FP) // r1 |
| MOVW R0, r2+32(FP) // r2 |
| MOVW R2, err+36(FP) // errno |
| RET |
| ok2: |
| MOVW R2, r1+28(FP) // r1 |
| MOVW R3, r2+32(FP) // r2 |
| MOVW R0, err+36(FP) // errno |
| RET |
| |
| TEXT ·rawSyscallNoError(SB),NOSPLIT,$20-24 |
| MOVW a1+4(FP), R4 |
| MOVW a2+8(FP), R5 |
| MOVW a3+12(FP), R6 |
| MOVW trap+0(FP), R2 // syscall entry |
| SYSCALL |
| MOVW R2, r1+16(FP) // r1 |
| MOVW R3, r2+20(FP) // r2 |
| RET |
