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Author SHA1 Message Date
Matthew Maurer
2411a5e789 Export memalign to linker 
In order to support demangling of rust symbols by the linker, we are
adding a small Rust component. Rust expects `memalign` to be present in
hosted environments, and it doesn't appear costly to enable it.

Bug: 178565008
Test: m, killall -11 keystore2 produced mangled names in tombstone
Change-Id: I8fc749000fa02a3b760c8cc55be3348b9964d931
 2021-08-17 15:08:49 -07:00
Ryan Prichard
083d850b30 Move the linker allocator into libc 
Rename LinkerMemoryAllocator -> BionicAllocator
Rename LinkerSmallObjectAllocator -> BionicSmallObjectAllocator

libc and the linker need to share an instance of the allocator for
allocating and freeing dynamic ELF TLS memory (DTVs and segments). The
linker also continues to use this allocator.

Bug: http://b/78026329
Test: /data/nativetest/bionic-unit-tests-static
Test: /data/nativetest64/bionic-unit-tests-static
Test: /data/nativetest/linker-unit-tests/linker-unit-tests32
Test: /data/nativetest64/linker-unit-tests/linker-unit-tests64
Change-Id: I2da037006ddf8041a75f3eba2071a8fcdcc223ce
 2019-01-25 15:31:35 -08:00
Elliott Hughes
b177085ce7 Add reallocarray(3). 
Originally a BSD extension, now in glibc too. We've used it internally
for a while.

(cherry-pick of e4b13f7e3ca68edfcc5faedc5e7d4e13c4e8edb9.)

Bug: http://b/112163459
Test: ran tests
Change-Id: I813c3a62b13ddb91ba41e32a5a853d09207ea6bc
Merged-In: I813c3a62b13ddb91ba41e32a5a853d09207ea6bc
 2018-09-26 14:24:18 -07:00
Josh Gao
72282add20 linker_memory: return success in enable_fallback_allocator. 
Instead of aborting when in use, return a bool instead.

Test: debuggerd_test
Change-Id: Ifd2e4439303c95054298b0a05e0cb648ded1306c
 2018-01-24 15:08:53 -08:00
Christopher Ferris
7a3681e5b6 Move libc_log code into libasync_safe. 
This library is used by a number of different libraries in the system.
Make it easy for platform libraries to use this library and create
an actual exported include file.

Change the names of the functions to reflect the new name of the library.

Run clang_format on the async_safe_log.cpp file since the formatting is
all over the place.

Bug: 31919199

Test: Compiled for angler/bullhead, and booted.
Test: Ran bionic unit tests.
Test: Ran the malloc debug tests.
Change-Id: I8071bf690c17b0ea3bc8dc5749cdd5b6ad58478a
 2017-05-03 08:50:43 -07:00
Josh Gao
222272ece9 linker_memory: allow fallback allocator to be turned on and off. 
Let the fallback allocator be used on multiple threads (as long as only
one thread is using it at once).

Bug: http://b/35858739
Change-Id: Id3e2fc6b7c093c6e56870524ffda28946de09e29
 2017-03-08 16:43:59 -08:00
Josh Gao
4509e0ec94 Merge changes from topic 'debuggerd_inproc' 
* changes:
  linker: use fallback crash handler dumping.
  linker: add android_use_fallback_allocator.
 2017-02-16 23:11:52 +00:00
Josh Gao
9ccccc1a95 linker: add android_use_fallback_allocator. 
Add a function to enable a fallback allocator to use for crash handling
in a signal handler.

Bug: http://b/34684590
Test: crasher PR_SET_NO_NEW_PRIVS
Change-Id: Ifa5de636164f34b8cb2fdec4471c20f8516b6dbe
 2017-02-15 17:00:16 -08:00
Dimitry Ivanov
bcc4da9b75 Unify linker files under one license (BSD) 
Historically we had part of the linker licensed under BSD and
another part under Apache 2 license. This commit makes all the
linker code licensed under BSD license.

Test: m
Change-Id: I11b8163ae75966b5768d3fe992679de376106515
 2017-02-15 15:35:33 -08:00
Dmitriy Ivanov
19656ce537 General purpose memory allocator for linker. 
Add basic general purpose memory allocator to
 linker in order to enable usage of other libraries
 like libziparchive.

Change-Id: I4a680ebb36ed5ba67c61249f81dba9f567808434
 2015-03-16 11:19:53 -07:00