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author | Bruce Beare <bruce.j.beare@intel.com> | 2011-06-20 10:29:50 -0700 |
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committer | Bruce Beare <bruce.j.beare@intel.com> | 2011-06-20 14:44:44 -0700 |
commit | 39640842823ba4cd42bd11514c0da39aa939519f (patch) | |
tree | c2cddf3319145716533bc9d12ad1d6bb5c047f59 /libc/arch-arm | |
parent | 4d9b75a9b08c19cef81b22f889edba61257fb356 (diff) | |
download | bionic-39640842823ba4cd42bd11514c0da39aa939519f.zip bionic-39640842823ba4cd42bd11514c0da39aa939519f.tar.gz bionic-39640842823ba4cd42bd11514c0da39aa939519f.tar.bz2 |
Enable functional DSO object destruction
Unfortunately, legacy .so files for ARM don't have a correct crtbegin file.
Consequently, we have to grandfather the old __dso_handle behaviour.
Add some ifdefs for ARM to allow it to use the old code until we can work
out a transition.
Change-Id: I6a28f368267d792c94e1d985d8344023bc632f6f
Author: H.J. Lu <hongjiu.lu@intel.com>
Signed-off-by: Bruce Beare <bruce.j.beare@intel.com>
Diffstat (limited to 'libc/arch-arm')
-rw-r--r-- | libc/arch-arm/bionic/atexit.S | 69 | ||||
-rw-r--r-- | libc/arch-arm/bionic/crtbegin_dynamic.S | 1 | ||||
-rw-r--r-- | libc/arch-arm/bionic/crtbegin_so.S | 6 | ||||
-rw-r--r-- | libc/arch-arm/bionic/crtbegin_static.S | 1 |
4 files changed, 77 insertions, 0 deletions
diff --git a/libc/arch-arm/bionic/atexit.S b/libc/arch-arm/bionic/atexit.S new file mode 100644 index 0000000..aa1e18d --- /dev/null +++ b/libc/arch-arm/bionic/atexit.S @@ -0,0 +1,69 @@ +/* + * Copyright (C) 2011 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. + */ + +#ifndef CRT_LEGACY_WORKAROUND + .arch armv5te + .fpu softvfp + .eabi_attribute 20, 1 + .eabi_attribute 21, 1 + .eabi_attribute 23, 3 + .eabi_attribute 24, 1 + .eabi_attribute 25, 1 + .eabi_attribute 26, 2 + .eabi_attribute 30, 4 + .eabi_attribute 18, 4 + .code 16 + .section .text.atexit,"ax",%progbits + .align 2 + .global atexit + .hidden atexit + .code 16 + .thumb_func + .type atexit, %function +atexit: + .fnstart +.LFB0: + .save {r4, lr} + push {r4, lr} +.LCFI0: + ldr r3, .L3 + mov r1, #0 + @ sp needed for prologue +.LPIC0: + add r3, pc + ldr r2, [r3] + bl __cxa_atexit + pop {r4, pc} +.L4: + .align 2 +.L3: + .word __dso_handle-(.LPIC0+4) +.LFE0: + .fnend + .size atexit, .-atexit +#endif diff --git a/libc/arch-arm/bionic/crtbegin_dynamic.S b/libc/arch-arm/bionic/crtbegin_dynamic.S index d18e715..0999084 100644 --- a/libc/arch-arm/bionic/crtbegin_dynamic.S +++ b/libc/arch-arm/bionic/crtbegin_dynamic.S @@ -85,3 +85,4 @@ __CTOR_LIST__: .long -1 #include "__dso_handle.S" +#include "atexit.S" diff --git a/libc/arch-arm/bionic/crtbegin_so.S b/libc/arch-arm/bionic/crtbegin_so.S index bb6b3e2..9275b1e 100644 --- a/libc/arch-arm/bionic/crtbegin_so.S +++ b/libc/arch-arm/bionic/crtbegin_so.S @@ -52,4 +52,10 @@ __FINI_ARRAY__: .long -1 .long __on_dlclose +#ifdef CRT_LEGACY_WORKAROUND #include "__dso_handle.S" +#else +#include "__dso_handle_so.S" +#endif + +#include "atexit.S" diff --git a/libc/arch-arm/bionic/crtbegin_static.S b/libc/arch-arm/bionic/crtbegin_static.S index 6f9cf25..13b05b2 100644 --- a/libc/arch-arm/bionic/crtbegin_static.S +++ b/libc/arch-arm/bionic/crtbegin_static.S @@ -86,3 +86,4 @@ __CTOR_LIST__: #include "__dso_handle.S" +#include "atexit.S" |