Commit Graph

40 Commits

Author SHA1 Message Date
Hal Finkel e3c2626aa4 [ELF2] Make the system page size a target-dependent property
The required page alignment is different on different targets. On PowerPC, for
example, we need 64K pages (the loader won't set different permissions on a
finer granularity than that). I've set the existing targets to what I believe
to be the correct values, and have updated the regression tests accordingly.

llvm-svn: 249760
2015-10-08 22:23:54 +00:00
Hal Finkel 6c2a3b8368 [ELF2] Make the .plt entry size target dependent
The size of a .plt entry is different on different targets (it is,
specifically, much larger than 8 on all PPC ABIs). There is no functional
change here (later patches to create .plt entries for PPC64 will depend on this
change).

llvm-svn: 249756
2015-10-08 21:51:31 +00:00
Hal Finkel 4729064a1c Revert: r249728 - Roll back r249726 and r249723 because they broke buildbots.
Reapply r249726 (and r249723), hopefully with the correct test fixups this time.

Original commit message:

Address a FIXME in ELF/Writer.cpp: Make VAStart a target-dependent property.
I've set the values for the existing targets to what I believe to be the
correct values, and updated the regression tests accordingly.

llvm-svn: 249752
2015-10-08 21:25:04 +00:00
Rui Ueyama af21d92320 ELF2: Do not pass GotVA because it's accessible as Out<ELFT>::Got->getVA().
llvm-svn: 249729
2015-10-08 20:06:07 +00:00
Rui Ueyama 7114f0597b Roll back r249726 and r249723 because they broke buildbots.
llvm-svn: 249728
2015-10-08 20:00:02 +00:00
Hal Finkel eb84ce8bd1 [ELF2] Make VAStart a target-dependent property
Address a FIXME in ELF/Writer.cpp: Make VAStart a target-dependent property.
I've set the values for the existing targets to what I believe to be the
correct values, and updated the regression tests accordingly.

llvm-svn: 249723
2015-10-08 19:36:39 +00:00
Davide Italiano c3858ab82e [ELF2] Garbage collect or{16,64}le. They're now unused.
llvm-svn: 249628
2015-10-07 22:11:20 +00:00
Davide Italiano 06d843226b [ELF2/AArch64] _ABS* relocations don't read contents. Fix it.
Spotted by: Rafael Espindola.

llvm-svn: 249627
2015-10-07 22:10:02 +00:00
George Rimar 730c27894a [ELF2] - fix to use PLT/GOT for DSO function calls (X86TargetInfo)
Differential Revision: http://reviews.llvm.org/D13522

llvm-svn: 249588
2015-10-07 18:46:13 +00:00
Rui Ueyama ee8c53bbe2 ELF2: Inline small functions.
llvm-svn: 249449
2015-10-06 19:57:01 +00:00
Davide Italiano ef4be6b4fe [ELF2/AArch64] Function names should start with a verb (lower case).
Pointed out by: Rafael Espindola.

llvm-svn: 249443
2015-10-06 19:01:32 +00:00
Rui Ueyama 87bc41bcee ELF2: Use shorter names before this file grows larger.
llvm-svn: 249441
2015-10-06 18:54:43 +00:00
Rui Ueyama 33bb1a23b3 ELF2: or{16,32,64}le should really do bitwise-OR.
llvm-svn: 249436
2015-10-06 18:11:18 +00:00
Rui Ueyama 190beb3144 ELF2: Define or{16,32,64}le that are analogous to add32le.
llvm-svn: 249435
2015-10-06 18:08:03 +00:00
Davide Italiano b4606e183e [ELF2/AArch64] Read the right amount of bytes.
This was clearly wrong (thanks Rui for spotting), and I honestly would 
like to get this tested so such mistakes won't repeat. Unfortunately, I
wasn't (easily) able to craft a test that exposes the bad behavior.
Ideally, we would like to get tests of this kind for all relocations, but
at the time of writing, this is not true. So, for now just fix this bug
and try to re-evaluate a way to test this in the future.

llvm-svn: 249359
2015-10-05 22:43:42 +00:00
Rafael Espindola ae24400424 Create R_X86_64_RELATIVE when needed.
The dynamic relocation code needs refactoring, but it is probably better
to do it with this test passing.

llvm-svn: 249340
2015-10-05 19:30:12 +00:00
Davide Italiano df88f968e3 [ELF2/AArch64] Add support for AARCH64_ABS{16,32,64} relocations.
I saw these in the wild while trying to link shared libraries.

llvm-svn: 249254
2015-10-04 00:59:16 +00:00
Davide Italiano 0b6974bfe0 [ELF/AArch64] Support R_AARCH64_ADR_PREL_PG_H121 relocation.
llvm-svn: 249246
2015-10-03 19:56:07 +00:00
Davide Italiano d9b5be4c83 [ELF/AArch64] Fix a couple of typos. My bad, sorry.
llvm-svn: 249201
2015-10-02 22:17:09 +00:00
Davide Italiano 318ca22914 [ELF2/AArch64] Add comment and change name to match the one of the ABI.
Fix style while I'm here.

llvm-svn: 249198
2015-10-02 22:13:51 +00:00
Davide Italiano 1f31a2c11c [ELF2/AArch64] Add support for R_AARCH64_ADR_PREL_PG_H121
llvm-svn: 249195
2015-10-02 22:00:42 +00:00
Rafael Espindola 3c412e14cc Expand a comment a bit.
llvm-svn: 248894
2015-09-30 12:30:58 +00:00
Rui Ueyama 5ba3ac4f10 Simplify switch statements. NFC.
llvm-svn: 248871
2015-09-30 01:40:08 +00:00
Rui Ueyama e3fbc89c44 ELF2: Do not use host pointer size to calculate x86_64 relocation addresses.
Previous code had a potential portability issue because intptr_t is
not guaranteed to be 64 bit.

llvm-svn: 248856
2015-09-29 23:25:21 +00:00
Rafael Espindola 9a0db7cbef Fix typo.
llvm-svn: 248855
2015-09-29 23:23:53 +00:00
Rafael Espindola 3ef3a4c9ff Start adding support for static programs using dynamic libraries.
This is just enough for a hello world using a dynamic glibc.

llvm-svn: 248854
2015-09-29 23:22:16 +00:00
Rui Ueyama 1500a90093 ELF2: Do not create ArrayRefs and use const arrays instead. NFC.
llvm-svn: 248844
2015-09-29 23:00:47 +00:00
Rafael Espindola 8acb95c7ab Add support for R_386_GOT32.
llvm-svn: 248799
2015-09-29 14:42:37 +00:00
Rafael Espindola 6d7fcdb518 Add R_386_GOTPC support.
llvm-svn: 248793
2015-09-29 13:36:32 +00:00
Simon Atanasyan 49829a1bfe [ELF2] Add initial MIPS support
Besides a trivial MIPS support the patch introduces new TargetInfo class
member getDefaultEntry() to override default name of the entry symbol.
MIPS uses __start for that.

Differential Revision:  http://reviews.llvm.org/D13227

llvm-svn: 248779
2015-09-29 05:34:03 +00:00
Davide Italiano 1d750a6fc3 [ELF2/AArch64] Support for R_AARCH64_ADR_PREL_LO21 relocation.
llvm-svn: 248679
2015-09-27 08:45:38 +00:00
Davide Italiano cde9336717 [ELF2] Add initial AArch64 support.
Differential Revision:	http://reviews.llvm.org/D13167

llvm-svn: 248641
2015-09-26 00:32:04 +00:00
Rafael Espindola 0872ea3954 Simplify with some ideas from COFF:
* add using namespace llvm::support::endian.
* create a add32le static helper.

Thanks to Rui for the suggestion.

llvm-svn: 248491
2015-09-24 14:16:02 +00:00
Rafael Espindola cdfecffd80 Add support for relocating R_X86_64_GOTPCREL.
llvm-svn: 248425
2015-09-23 20:08:25 +00:00
Rafael Espindola 7f07442bb6 Move the last remaining hard coded relocations to Target.
Unfortunately the i386 and x86_64 relocation have the same numerical value
and it is a probably a bit much to add got support for another architecture
just to test this.

llvm-svn: 248326
2015-09-22 21:35:51 +00:00
Rafael Espindola 1d6063e804 Stub out ARM and PPC targets so that we can use a switch to create them.
llvm-svn: 248324
2015-09-22 21:24:52 +00:00
Rafael Espindola 3efa4e982e Add a token ppc64 reloc just to have a test showing that we handle BE.
llvm-svn: 248321
2015-09-22 21:12:55 +00:00
Rafael Espindola c40108858d Move relocation processing to Target.
I will add a couple of ppc64 relocs in the next patches.

llvm-svn: 248319
2015-09-22 20:54:08 +00:00
Rafael Espindola 8c21fad1e8 Fix a merge problem.
r248289 got lots when I moved code to Target.cpp. Sorry about that.

llvm-svn: 248317
2015-09-22 20:06:19 +00:00
Rafael Espindola 01205f79a4 Start adding target abstractions.
This is just enough to get PLT working on 32 bit x86.

The idea behind using a virtual interface is that it should be easy to
convert any of the functions to template parameters if any turns out to be
performance critical.

llvm-svn: 248308
2015-09-22 18:19:46 +00:00