13 Commits

Author SHA1 Message Date
Ying Wang
26e663d479 Fix Mac checkbuild.
Bug: 21669400
Change-Id: I54691661605a2e2c1871781964aed343840b8560
(cherry-pick from commit 33c2d441b8f816722bed984c6e12b82b888c3ca2)
2015-06-08 12:20:16 -07:00
Dmitriy Ivanov
064a9800f3 Do not adjust PT_GNU_STACK segment
Bug: http://b/20687795
Bug: http://b/18051137
Change-Id: Ie8af3892cfbebcc0249e7981284c4ad97ff40317
2015-05-04 18:35:43 +00:00
Dmitriy Ivanov
126b5efa9d Adjust DT_MIPS_RLD_MAP2 value
DT_MIPS_RLD_MAP2 stores the difference between dynamic
  entry address and the address of the _r_debug (used by GDB)
  since the dynamic section and target address are on the
  different sides of the hole it needs to be adjusted accordingly

Bug: http://b/20658994
Bug: http://b/18051137
Change-Id: I4c5e379e8a4c68f029467df6dc660f81a7013a09
(cherry picked from commit 18c935ceabb54a32aff42f99c6d20680ac333157)
2015-04-29 22:10:53 -07:00
Dmitriy Ivanov
7936fa6536 Reduce p_align for program header to page size.
Having p_align > page_size leads to the situation when striping
 packed executables results in unnecessary p_vaddr adjustments.
 And it also may result (with probability 1 - 1/sizeof(uintptr_t)) in
 misaligned segments following .dynstr

Bug: http://b/20629834
Bug: http://b/18051137

(cherry picked from commit b293969c6d4acede62ac7b035dcb598e63574ca0)

Change-Id: I2fb15cf5cb52fada6511d5af93df099fc2cbf7ba
2015-04-27 20:45:04 -07:00
Dmitriy Ivanov
b0b9338ff8 Exit normally when relocations are already packed.
Bug: http://b/18051137
Change-Id: Idfffac5fe965e3cdeabe6d3b2dcd8c275c6ae5df
2015-04-24 12:39:14 -07:00
Dmitriy Ivanov
adfcb97317 Exit normally when packing relocs saves no space.
Bug: http://b/18051137
Change-Id: I43ea5678a677e5d39fb54fafcf3a2f3a252c79b0
2015-04-23 22:54:25 +00:00
Dmitriy Ivanov
f15ceeb784 Always use signed leb128 encoding
According to runs on /system/lib there using
 unsigned leb128 does not save us any additional
 space. In order to keep packing as simple as
 possible switch to using signed leb128 for
 everything.

Bug: http://b/18051137
Change-Id: I1a47cb9eb2175895b3c3f7c13b4c6b1060de86c0
2015-04-22 12:58:38 -07:00
Dmitriy Ivanov
2a6342187a Statically link libc++ for prebuilts
Statically link libc++ to relocation_packer in
 order to make it work from prebuilts

Bug: http://b/18051137
Change-Id: I933ed6a0e48780a26b261069eb6a293432824fe7
2015-04-22 10:43:12 -07:00
Dmitriy Ivanov
bb25bbe19e Adjust DT_VERSYM/VERNEED/VERDEF dynamic sections
This is recent addition to bionic linker. The symbol
  versioning was not supported before therefore this bug
  went unnoticed.

  Also normal exit when there is not enought relocations
  to pack. This is to enable integration of relocation_packer
  to android build system.

Bug: http://b/20139821
Bug: http://b/18051137
Change-Id: Iaf36ae11c8e4b15cf785b6dd1712a3bdcf47cc45
2015-04-21 12:28:21 -07:00
Simon Baldwin
569a752689 Fix comment drift in assorted relocation packer modules.
Some of the commentary in relocation packer code is relevant
only to the packing strategy employed by chromium, and no
longer applies here.  This change fixes or deletes it.

Code comment change only; no functional effect.

Change-Id: Id229ee1d802bba608be15b79bc75bf90df557dab
Signed-off-by: Simon Baldwin <simonb@google.com>
2015-03-26 17:13:19 +00:00
Simon Baldwin
d2bd5739ed Remove unused/unusable relocation packer files.
Removes:
- src/run_length_encoder.h
    artifact of the original packing tool, not used here
- test_data/generate_elf_file_unittest_relocs.sh
- test_data/generate_elf_file_unittest_relocs.py
    test data generation for chromium/gyp, not usable here
- README.TXT
    because it is now almost entirely outdated

Change-Id: Ic4cd372647d9a365dc52833a6cc1cf66f0c95ec9
2015-03-25 16:23:01 +00:00
Dmitriy Ivanov
f8ff6b103b Generalize compression tool
1. One binary for all architectures
 2. Generalize (and slightly improve) compression
 2.1 works on all relocation types (rela?.dyn section only so far)
 2.2 Uses same format to encode ElfW(Rel) as well as ElfW(Rela) tables

Bug: 18051137
Change-Id: I66c95d9076954ca115816fc577d0f5ef274e5e72
2015-03-06 13:01:08 -08:00
Dmitriy Ivanov
87a0617ebe Import relocation packer from chromium repo
Bug: 18051137
Change-Id: Ia67fa11da8247e3f86f70a8ce99e6695f2c05423
2015-03-06 13:01:08 -08:00