Commit Graph

34 Commits

Author SHA1 Message Date
Denis Protivensky f2c22f4ff8 [ARM] report_fatal_error for not implemented functionality
llvm-svn: 238017
2015-05-22 12:39:05 +00:00
Denis Protivensky 214122cffc [ARM] Implement R_ARM_GLOB_DAT for GOT entries
This is used when referencing global or static data in shared
objects. This is also used when function's address is taken and
function call is made indirectly.

llvm-svn: 238014
2015-05-22 11:00:31 +00:00
Denis Protivensky 679c2c3639 [ARM] Check overflow of R_ARM_THM_JUMP11
llvm-svn: 236842
2015-05-08 12:45:11 +00:00
Denis Protivensky 73e927885c [ARM] Check overflow of R_ARM_CALL/JUMP24
llvm-svn: 236841
2015-05-08 12:36:40 +00:00
Denis Protivensky a0cffffcfa [ARM] Check overflow of R_ARM_THM_CALL/JUMP24
llvm-svn: 236839
2015-05-08 12:34:43 +00:00
Denis Protivensky 1a3bd31e52 [ARM] Check overflow of R_ARM_PREL31
llvm-svn: 236729
2015-05-07 14:05:30 +00:00
Denis Protivensky cf4e031b36 [ARM] llvm_unreachable => make_dynamic_error in R_ARM_BASE_PREL
llvm-svn: 236727
2015-05-07 13:44:51 +00:00
Denis Protivensky aaeba9ebb9 [ARM] llvm_unreachable => make_*_reloc_error in group relocs
llvm-svn: 236726
2015-05-07 13:41:44 +00:00
Denis Protivensky bc11ba4061 [ARM] Return directly from switch in relocation handler
llvm-svn: 236724
2015-05-07 13:12:11 +00:00
Denis Protivensky 9c3738ccef [ARM] Add return codes to relocation handlers
llvm-svn: 236723
2015-05-07 12:44:20 +00:00
Adhemerval Zanella d31aadf515 Add missing snippets from r235880
llvm-svn: 235890
2015-04-27 15:13:17 +00:00
Leny Kholodov 9e4292c0ec [ARM] Replace branches to undefined weak functions with NOP
According to the code model (ARM, Thumb, Thumb2) this patch updates the b/bl/blx 0 instructions with NOP.
test/elf/ARM/weak-branch.test has been added with tests for all available NOP (A1, T1, T2 encodings).

Differential Revision: http://reviews.llvm.org/D8807

llvm-svn: 235498
2015-04-22 11:47:53 +00:00
Denis Protivensky 0575c5de68 [ARM] Implement R_ARM_TLS_IE32 for dynamic executable
llvm-svn: 235182
2015-04-17 11:30:29 +00:00
Rui Ueyama 921b8e93bb ELF: Remove redundant namespace qualifiers.
llvm-svn: 234938
2015-04-14 20:39:06 +00:00
Denis Protivensky fb8afb8f81 [ARM] Implement PLT for dynamic pass
This includes implementation of PLT0 entry.

For testing, libfn.so binary is added since
there's no way to link shared objects with lld yet.

llvm-svn: 234588
2015-04-10 11:41:27 +00:00
Rui Ueyama 17a2fa1e32 Remove redundant parentheses.
llvm-svn: 234558
2015-04-10 02:18:23 +00:00
Denis Protivensky 455e44b0e4 [ARM] clang-format ARM sources
llvm-svn: 234474
2015-04-09 10:17:22 +00:00
Denis Protivensky dd7adf7a18 [ARM] Rename applyThmReloc => applyThumb32Reloc
llvm-svn: 234302
2015-04-07 07:14:13 +00:00
Rui Ueyama a5f1ae1ad0 ELF: Use short variable names in <Arch>RelocationHandlers.cpp.
Functions in the files are hard to read because of line wrapping.
Use shorter names for local variables so that the lines fit
within 80 columns.

llvm-svn: 234087
2015-04-04 04:22:27 +00:00
Leny Kholodov 95ed78b85a [ARM] Implementation of R_ARM_TARGET1 relocation
This patch provides implementation of R_ARM_TARGET1 relocation with
configuration of its behaviour from a command line. This patch provides
two command line options for GnuLd driver: --arm-target1-rel and
--arm-target1-abs (similar to ld option names with extra prefix 'arm-').
So user may choose which behaviour of R_ARM_TARGET1 is preferred for his
implementation of libc.

Differential Revision: http://reviews.llvm.org/D8707

llvm-svn: 234009
2015-04-03 12:03:47 +00:00
Rui Ueyama c351f9563a Use DEBUG_TYPE and DEBUG instead of DEBUG_WITH_TYPE.
llvm-svn: 233710
2015-03-31 16:48:57 +00:00
Denis Protivensky 7eda022521 [ARM] Handle GOT relocations
This includes relocs needed to link against glibc:
R_ARM_BASE_PREL
R_ARM_GOT_BREL

Every reloc is accompanied with a test case.

llvm-svn: 233383
2015-03-27 16:29:08 +00:00
Leny Kholodov 28074d6e9b [ARM] Implementation of PLT: handling of IFUNC calls (gnu_indirect_function)
This diff includes implementation of linking calls to ifunc functions.
It provides ifunc entries in PLT and corresponding relocations (R_ARM_ALU_PC_G0_NC,
R_ARM_ALU_PC_G1_NC, R_ARM_LDR_PC_G2 for link-time and R_ARM_IRELATIVE for run-time).

Differential Revision: http://reviews.llvm.org/D7833

llvm-svn: 233277
2015-03-26 14:57:50 +00:00
Leny Kholodov 4fdbf55730 Revert blank line after test commit
llvm-svn: 233268
2015-03-26 10:44:14 +00:00
Leny Kholodov 1d01cc7c1b Commit access verification: blank line has been added
llvm-svn: 233267
2015-03-26 10:37:53 +00:00
Denis Protivensky 9e473d0929 [ARM] Handle mapping symbols
Mapping symbols should have their own code models,
and in some places must be treated in a specific way.
Make $t denote Thumb code, and $a and $d denote ARM code.
Set size, binding and type of mapping symbols to what the specification says.

Differential Revision: http://reviews.llvm.org/D8601

llvm-svn: 233259
2015-03-26 07:47:16 +00:00
Denis Protivensky 91141e87b1 [ARM] Implement static (initial exec) TLS model
This includes handling of R_ARM_TLS_IE32 and R_ARM_TLS_LE32 relocs.

Differential Revision: http://reviews.llvm.org/D8353

llvm-svn: 232708
2015-03-19 06:47:44 +00:00
Denis Protivensky 5a106191fa [ARM] Read initial addend for REL32 and PREL31 relocs
llvm-svn: 232474
2015-03-17 13:51:32 +00:00
Denis Protivensky e458ab4577 [ARM] Implement relocations: R_ARM_REL32, R_ARM_THM_JUMP11, R_ARM_PREL31
Test case for every relocation is added.

Differential Revision: http://reviews.llvm.org/D7565

llvm-svn: 232464
2015-03-17 09:18:24 +00:00
Rui Ueyama 25b87a4b5b Remove include/lld/Core/Endian.h and use llvm/Support/Endian.h instead.
llvm-svn: 231005
2015-03-02 20:31:43 +00:00
Rui Ueyama 7cea026a63 Add {read,write}{16,32,64}{le,be} functions.
Nothing wrong with reinterpret_cast<llvm::support::ulittle32_t *>(loc),
but that's redundant and not great from readability point of view.
The new functions are wrappers for that kind of reinterpet_casts.

Surprisingly or unsurprisingly, there was no use of big endian read
and write. {read,write}{16,32,64}be have no user. But I think they
still worth to be there in the header for completeness.

http://reviews.llvm.org/D7927

llvm-svn: 230725
2015-02-27 03:18:46 +00:00
Denis Protivensky b635ae8388 [lld][ARM] Add relocations to perform function calls
Added relocations to perform function calls with and without passing arguments.
ARM-only, Thumb-only and mixed mode code generations are supported.
Only simple veneers (direct instruction modification) are supported as ARM-Thumb interwork.

Differential Revision: http://reviews.llvm.org/D7223

llvm-svn: 227961
2015-02-03 10:48:37 +00:00
Denis Protivensky f9d020d412 [ARM] Correctly use make_unhandled_reloc_error
llvm-svn: 227184
2015-01-27 08:47:15 +00:00
Greg Fitzgerald 8a1887f1f1 [ELF] Minimal implementation for ARM static linking
The code is able to statically link the simplest case of:

  int main() { return 0; }

* Only works with ARM code - no Thumb code, no interwork (-marm -mno-thumb-interwork)
* musl libc built with no interwork and no Thumb code

Differential Revision: http://reviews.llvm.org/D6716

From: Denis Protivensky <dprotivensky@accesssoftek.com>
llvm-svn: 226643
2015-01-21 07:35:48 +00:00