diff options
Diffstat (limited to 'src/syscall/asm_linux_mipsx.s')
| -rw-r--r-- | src/syscall/asm_linux_mipsx.s | 150 |
1 files changed, 150 insertions, 0 deletions
diff --git a/src/syscall/asm_linux_mipsx.s b/src/syscall/asm_linux_mipsx.s new file mode 100644 index 0000000..5727e4d --- /dev/null +++ b/src/syscall/asm_linux_mipsx.s @@ -0,0 +1,150 @@ +// 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 |