| /* |
| * Copyright (c) 2012 The Native Client Authors. All rights reserved. |
| * Use of this source code is governed by a BSD-style license that can be |
| * found in the LICENSE file. |
| */ |
| |
| #include "native_client/src/include/arm_sandbox.h" |
| |
| /* |
| * assume 32-byte trampoline slots, 16-byte bundles. |
| */ |
| #define GETTIMEOFDAY_ADDR 0x10500 |
| |
| .data |
| timebuf: |
| .space 0x200 /* enough for a timeval */ |
| |
| .text |
| .globl SyscallReturnIsSandboxed |
| .p2align 4 |
| SyscallReturnIsSandboxed: |
| nop |
| push {lr} |
| ldr r0, addrOfTimeBuf |
| mov r1, #0 |
| |
| adr lr, bad |
| ldr r2, addrOfGetTimeOfDaySyscallAddr |
| bic r2, r2, #0xf000000f |
| bx r2 |
| |
| eor r0, r0, #1 |
| bad: pop {lr} |
| bic lr, lr, #0xf000000f |
| bx lr |
| |
| .p2align 4 |
| .word NACL_INSTR_ARM_LITERAL_POOL_HEAD |
| /* |
| * Put a disallowed instruction here to ensure that the bkpt |
| * data bundle marker works. If the marker does not work, then |
| * whether this code passes the validator is a matter of chance. |
| */ |
| mov pc, r0 |
| addrOfGetTimeOfDaySyscallAddr: |
| .word GETTIMEOFDAY_ADDR |
| addrOfTimeBuf: |
| .word timebuf |
