src/untrusted/irt/elf_restart_arm.S - Issue 7276050: Change startup ABI for untrusted code to be C-compatible

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Side by Side Diff: src/untrusted/irt/elf_restart_arm.S

Issue 7276050: Change startup ABI for untrusted code to be C-compatible (Closed) Base URL: svn://svn.chromium.org/native_client/trunk/src/native_client

Patch Set: Created 9 years, 5 months ago

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1 /*

2 * Copyright (c) 2011 The Native Client Authors. All rights reserved.

3 * Use of this source code is governed by a BSD-style license that can be

4 * found in the LICENSE file.

5 */

6

7 /*

8 * The ELF entry point ABI is such that assembly code is required to

9 * call the entry point.

10 * See http://code.google.com/p/nativeclient/issues/detail?id=1131

11 */

12

13 #include "native_client/src/trusted/service_runtime/nacl_config.h"

14

15 /*

16 * arg 1: r0, new stack pointer

17 * arg 2: r1, entry point

18 * arg 3: r2, atexit function, to be left in r0

19 */

20 .global jump_to_elf_start

21 jump_to_elf_start:

22 mov sp, r0

23 bic sp, sp, #NACL_DATA_FLOW_MASK

24

25 mov r0, r2

26 nop

27

28 bic r1, r1, #NACL_CONTROL_FLOW_MASK

29 bx r1

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