99 lines
1.9 KiB
ArmAsm
99 lines
1.9 KiB
ArmAsm
// Copyright 2018 Google Inc.
|
|
//
|
|
// Licensed under the Apache License, Version 2.0 (the "License");
|
|
// you may not use this file except in compliance with the License.
|
|
// You may obtain a copy of the License at
|
|
//
|
|
// http://www.apache.org/licenses/LICENSE-2.0
|
|
//
|
|
// Unless required by applicable law or agreed to in writing, software
|
|
// distributed under the License is distributed on an "AS IS" BASIS,
|
|
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
|
// See the License for the specific language governing permissions and
|
|
// limitations under the License.
|
|
|
|
// +build amd64
|
|
|
|
// test_util_amd64.s provides AMD64 test functions.
|
|
|
|
#include "funcdata.h"
|
|
#include "textflag.h"
|
|
|
|
TEXT ·Getpid(SB),NOSPLIT,$0
|
|
NO_LOCAL_POINTERS
|
|
MOVQ $39, AX // getpid
|
|
SYSCALL
|
|
RET
|
|
|
|
TEXT ·Touch(SB),NOSPLIT,$0
|
|
start:
|
|
MOVQ 0(AX), BX // deref AX
|
|
MOVQ $39, AX // getpid
|
|
SYSCALL
|
|
JMP start
|
|
|
|
TEXT ·HaltLoop(SB),NOSPLIT,$0
|
|
start:
|
|
HLT
|
|
JMP start
|
|
|
|
TEXT ·SyscallLoop(SB),NOSPLIT,$0
|
|
start:
|
|
SYSCALL
|
|
JMP start
|
|
|
|
TEXT ·SpinLoop(SB),NOSPLIT,$0
|
|
start:
|
|
JMP start
|
|
|
|
TEXT ·FloatingPointWorks(SB),NOSPLIT,$0-8
|
|
NO_LOCAL_POINTERS
|
|
MOVQ $1, AX
|
|
MOVQ AX, X0
|
|
MOVQ $39, AX // getpid
|
|
SYSCALL
|
|
MOVQ X0, AX
|
|
CMPQ AX, $1
|
|
SETEQ ret+0(FP)
|
|
RET
|
|
|
|
#define TWIDDLE_REGS() \
|
|
NOTQ R15; \
|
|
NOTQ R14; \
|
|
NOTQ R13; \
|
|
NOTQ R12; \
|
|
NOTQ BP; \
|
|
NOTQ BX; \
|
|
NOTQ R11; \
|
|
NOTQ R10; \
|
|
NOTQ R9; \
|
|
NOTQ R8; \
|
|
NOTQ AX; \
|
|
NOTQ CX; \
|
|
NOTQ DX; \
|
|
NOTQ SI; \
|
|
NOTQ DI; \
|
|
NOTQ SP;
|
|
|
|
TEXT ·TwiddleRegsSyscall(SB),NOSPLIT,$0
|
|
TWIDDLE_REGS()
|
|
SYSCALL
|
|
RET // never reached
|
|
|
|
TEXT ·TwiddleRegsFault(SB),NOSPLIT,$0
|
|
TWIDDLE_REGS()
|
|
JMP AX // must fault
|
|
RET // never reached
|
|
|
|
#define READ_FS() BYTE $0x64; BYTE $0x48; BYTE $0x8b; BYTE $0x00;
|
|
#define READ_GS() BYTE $0x65; BYTE $0x48; BYTE $0x8b; BYTE $0x00;
|
|
|
|
TEXT ·TwiddleSegments(SB),NOSPLIT,$0
|
|
MOVQ $0x0, AX
|
|
READ_GS()
|
|
MOVQ AX, BX
|
|
MOVQ $0x0, AX
|
|
READ_FS()
|
|
SYSCALL
|
|
RET // never reached
|