| Christopher Ferris | 8cf61da | 2014-09-24 17:05:20 -0700 | [diff] [blame] | 1 | /* |
| 2 | * Copyright (C) 2008 The Android Open Source Project |
| 3 | * All rights reserved. |
| Bernhard Rosenkraenzer | 7e4fa56 | 2014-03-05 11:40:57 +0100 | [diff] [blame] | 4 | * |
| Christopher Ferris | 8cf61da | 2014-09-24 17:05:20 -0700 | [diff] [blame] | 5 | * Redistribution and use in source and binary forms, with or without |
| 6 | * modification, are permitted provided that the following conditions |
| 7 | * are met: |
| 8 | * * Redistributions of source code must retain the above copyright |
| 9 | * notice, this list of conditions and the following disclaimer. |
| 10 | * * Redistributions in binary form must reproduce the above copyright |
| 11 | * notice, this list of conditions and the following disclaimer in |
| 12 | * the documentation and/or other materials provided with the |
| 13 | * distribution. |
| Bernhard Rosenkraenzer | 7e4fa56 | 2014-03-05 11:40:57 +0100 | [diff] [blame] | 14 | * |
| Christopher Ferris | 8cf61da | 2014-09-24 17:05:20 -0700 | [diff] [blame] | 15 | * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS |
| 16 | * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT |
| 17 | * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS |
| 18 | * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE |
| 19 | * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, |
| 20 | * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, |
| 21 | * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS |
| 22 | * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED |
| 23 | * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, |
| 24 | * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT |
| 25 | * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF |
| 26 | * SUCH DAMAGE. |
| Bernhard Rosenkraenzer | 7e4fa56 | 2014-03-05 11:40:57 +0100 | [diff] [blame] | 27 | */ |
| 28 | |
| Christopher Ferris | 8cf61da | 2014-09-24 17:05:20 -0700 | [diff] [blame] | 29 | // Prototype: void *memcpy (void *dst, const void *src, size_t count). |
| 30 | |
| Bernhard Rosenkraenzer | 7e4fa56 | 2014-03-05 11:40:57 +0100 | [diff] [blame] | 31 | #include <private/bionic_asm.h> |
| 32 | |
| Christopher Ferris | 8cf61da | 2014-09-24 17:05:20 -0700 | [diff] [blame] | 33 | ENTRY(__memcpy_chk) |
| 34 | cmp x2, x3 |
| 35 | b.hi __memcpy_chk_fail |
| Bernhard Rosenkraenzer | 7e4fa56 | 2014-03-05 11:40:57 +0100 | [diff] [blame] | 36 | |
| Christopher Ferris | 8cf61da | 2014-09-24 17:05:20 -0700 | [diff] [blame] | 37 | // Fall through to memcpy... |
| 38 | END(__memcpy_chk) |
| Bernhard Rosenkraenzer | 7e4fa56 | 2014-03-05 11:40:57 +0100 | [diff] [blame] | 39 | |
| 40 | ENTRY(memcpy) |
| Christopher Ferris | 8cf61da | 2014-09-24 17:05:20 -0700 | [diff] [blame] | 41 | #include "memcpy_base.S" |
| Bernhard Rosenkraenzer | 7e4fa56 | 2014-03-05 11:40:57 +0100 | [diff] [blame] | 42 | END(memcpy) |
| Christopher Ferris | 8cf61da | 2014-09-24 17:05:20 -0700 | [diff] [blame] | 43 | |
| 44 | ENTRY_PRIVATE(__memcpy_chk_fail) |
| 45 | // Preserve for accurate backtrace. |
| 46 | stp x29, x30, [sp, -16]! |
| 47 | .cfi_def_cfa_offset 16 |
| 48 | .cfi_rel_offset x29, 0 |
| 49 | .cfi_rel_offset x30, 8 |
| 50 | |
| 51 | adrp x0, error_string |
| 52 | add x0, x0, :lo12:error_string |
| Elliott Hughes | b83d674 | 2016-02-25 20:33:47 -0800 | [diff] [blame^] | 53 | bl __fortify_fatal |
| Christopher Ferris | 8cf61da | 2014-09-24 17:05:20 -0700 | [diff] [blame] | 54 | END(__memcpy_chk_fail) |
| 55 | |
| 56 | .data |
| 57 | .align 2 |
| 58 | error_string: |
| 59 | .string "memcpy: prevented write past end of buffer" |