f5bdee7fdf
The most notable change is in sigsetjmp/siglongjmp. The former stores LR signed with the current SP into jmp_buf. Calling siglongjmp reads a signed LR and the corresponding SP from jmp_buf. This way not only the checksum provides some means of integrity protection but Pointer Authentication too. Test: Tested on FVP with BTI enabled. Change-Id: I9d720239775f8d2829a677901f546c4b14b5cbe5
46 lines
1.9 KiB
ArmAsm
46 lines
1.9 KiB
ArmAsm
/*
|
|
* Copyright (C) 2019 The Android Open Source Project
|
|
* All rights reserved.
|
|
*
|
|
* Redistribution and use in source and binary forms, with or without
|
|
* modification, are permitted provided that the following conditions
|
|
* are met:
|
|
* * Redistributions of source code must retain the above copyright
|
|
* notice, this list of conditions and the following disclaimer.
|
|
* * Redistributions in binary form must reproduce the above copyright
|
|
* notice, this list of conditions and the following disclaimer in
|
|
* the documentation and/or other materials provided with the
|
|
* distribution.
|
|
*
|
|
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
|
|
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
|
|
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
|
|
* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
|
|
* COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
|
|
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
|
|
* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
|
|
* OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
|
|
* AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
|
|
* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
|
|
* OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
|
|
* SUCH DAMAGE.
|
|
*/
|
|
|
|
#include <private/bionic_asm.h>
|
|
|
|
#define FUNCTION_DELEGATE(name, impl) \
|
|
ENTRY(name); \
|
|
b impl; \
|
|
END(name)
|
|
|
|
FUNCTION_DELEGATE(memchr, __memchr_aarch64_mte)
|
|
FUNCTION_DELEGATE(stpcpy, __stpcpy_aarch64_mte)
|
|
FUNCTION_DELEGATE(strchr, __strchr_aarch64_mte)
|
|
FUNCTION_DELEGATE(strchrnul, __strchrnul_aarch64_mte)
|
|
FUNCTION_DELEGATE(strcmp, __strcmp_aarch64_mte)
|
|
FUNCTION_DELEGATE(strcpy, __strcpy_aarch64_mte)
|
|
FUNCTION_DELEGATE(strlen, __strlen_aarch64_mte)
|
|
FUNCTION_DELEGATE(strrchr, __strrchr_aarch64_mte)
|
|
FUNCTION_DELEGATE(strncmp, __strncmp_aarch64_mte)
|
|
|
|
NOTE_GNU_PROPERTY()
|