mirror of
https://github.com/netbirdio/gvisor.git
synced 2026-05-22 17:12:49 -07:00
170 lines
3.6 KiB
ArmAsm
170 lines
3.6 KiB
ArmAsm
// Copyright 2019 The gVisor Authors.
|
|
//
|
|
// 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 arm64
|
|
|
|
// test_util_arm64.s provides ARM64 test functions.
|
|
|
|
#include "funcdata.h"
|
|
#include "textflag.h"
|
|
|
|
#define SYS_GETPID 172
|
|
|
|
// This function simulates the getpid syscall.
|
|
TEXT ·Getpid(SB),NOSPLIT,$0
|
|
NO_LOCAL_POINTERS
|
|
MOVD $SYS_GETPID, R8
|
|
SVC
|
|
RET
|
|
|
|
TEXT ·AddrOfGetpid(SB),NOSPLIT,$0-8
|
|
MOVD $·Getpid(SB), R0
|
|
MOVD R0, ret+0(FP)
|
|
RET
|
|
|
|
TEXT ·touch(SB),NOSPLIT,$0
|
|
start:
|
|
MOVD 0(R8), R1
|
|
MOVD $SYS_GETPID, R8 // getpid
|
|
SVC
|
|
B start
|
|
|
|
TEXT ·AddrOfTouch(SB),NOSPLIT,$0-8
|
|
MOVD $·touch(SB), R0
|
|
MOVD R0, ret+0(FP)
|
|
RET
|
|
|
|
TEXT ·haltLoop(SB),NOSPLIT,$0
|
|
start:
|
|
HLT
|
|
B start
|
|
|
|
TEXT ·AddrOfHaltLoop(SB),NOSPLIT,$0-8
|
|
MOVD $·haltLoop(SB), R0
|
|
MOVD R0, ret+0(FP)
|
|
RET
|
|
|
|
// This function simulates a loop of syscall.
|
|
TEXT ·syscallLoop(SB),NOSPLIT,$0
|
|
start:
|
|
SVC
|
|
B start
|
|
|
|
TEXT ·AddrOfSyscallLoop(SB),NOSPLIT,$0-8
|
|
MOVD $·syscallLoop(SB), R0
|
|
MOVD R0, ret+0(FP)
|
|
RET
|
|
|
|
TEXT ·spinLoop(SB),NOSPLIT,$0
|
|
start:
|
|
B start
|
|
|
|
TEXT ·AddrOfSpinLoop(SB),NOSPLIT,$0-8
|
|
MOVD $·spinLoop(SB), R0
|
|
MOVD R0, ret+0(FP)
|
|
RET
|
|
|
|
TEXT ·TLSWorks(SB),NOSPLIT,$0
|
|
NO_LOCAL_POINTERS
|
|
MOVD $0x6789, R5
|
|
MSR R5, TPIDR_EL0
|
|
MOVD $SYS_GETPID, R8 // getpid
|
|
SVC
|
|
MRS TPIDR_EL0, R6
|
|
CMP R5, R6
|
|
BNE isNaN
|
|
MOVD $1, R0
|
|
MOVD R0, ret+0(FP)
|
|
RET
|
|
isNaN:
|
|
MOVD $0, ret+0(FP)
|
|
RET
|
|
|
|
TEXT ·FloatingPointWorks(SB),NOSPLIT,$0
|
|
NO_LOCAL_POINTERS
|
|
// gc will touch fpsimd, so we should test it.
|
|
// such as in <runtime.deductSweepCredit>.
|
|
FMOVD $(9.9), F0
|
|
MOVD $SYS_GETPID, R8 // getpid
|
|
SVC
|
|
FMOVD $(9.9), F1
|
|
FCMPD F0, F1
|
|
BNE isNaN
|
|
MOVD $1, R0
|
|
MOVD R0, ret+0(FP)
|
|
RET
|
|
isNaN:
|
|
MOVD $0, ret+0(FP)
|
|
RET
|
|
|
|
// MVN: bitwise logical NOT
|
|
// This case simulates an application that modified R0-R30.
|
|
#define TWIDDLE_REGS() \
|
|
MVN R0, R0; \
|
|
MVN R1, R1; \
|
|
MVN R2, R2; \
|
|
MVN R3, R3; \
|
|
MVN R4, R4; \
|
|
MVN R5, R5; \
|
|
MVN R6, R6; \
|
|
MVN R7, R7; \
|
|
MVN R8, R8; \
|
|
MVN R9, R9; \
|
|
MVN R10, R10; \
|
|
MVN R11, R11; \
|
|
MVN R12, R12; \
|
|
MVN R13, R13; \
|
|
MVN R14, R14; \
|
|
MVN R15, R15; \
|
|
MVN R16, R16; \
|
|
MVN R17, R17; \
|
|
MVN R18_PLATFORM, R18_PLATFORM; \
|
|
MVN R19, R19; \
|
|
MVN R20, R20; \
|
|
MVN R21, R21; \
|
|
MVN R22, R22; \
|
|
MVN R23, R23; \
|
|
MVN R24, R24; \
|
|
MVN R25, R25; \
|
|
MVN R26, R26; \
|
|
MVN R27, R27; \
|
|
MVN g, g; \
|
|
MVN R29, R29; \
|
|
MVN R30, R30;
|
|
|
|
TEXT ·twiddleRegsSyscall(SB),NOSPLIT,$0
|
|
TWIDDLE_REGS()
|
|
MSR R10, TPIDR_EL0
|
|
// Trapped in el0_svc.
|
|
SVC
|
|
RET // never reached
|
|
|
|
TEXT ·AddrOfTwiddleRegsSyscall(SB),NOSPLIT,$0-8
|
|
MOVD $·twiddleRegsSyscall(SB), R0
|
|
MOVD R0, ret+0(FP)
|
|
RET
|
|
|
|
TEXT ·twiddleRegsFault(SB),NOSPLIT,$0
|
|
TWIDDLE_REGS()
|
|
MSR R10, TPIDR_EL0
|
|
// Trapped in el0_ia.
|
|
// Branch to Register branches unconditionally to an address in <Rn>.
|
|
JMP (R6) // <=> br x6, must fault
|
|
RET // never reached
|
|
|
|
TEXT ·AddrOfTwiddleRegsFault(SB),NOSPLIT,$0-8
|
|
MOVD $·twiddleRegsFault(SB), R0
|
|
MOVD R0, ret+0(FP)
|
|
RET
|