Commit Graph

591 Commits

Author SHA1 Message Date
Simon Atanasyan 07fe7a943f [Driver] Accept both -m <emulation> and -m<emulation>
GNU linkers accept both variants and at least for MIPS target gcc passes
joined variant of the '-m' option.

Differential Revision: http://reviews.llvm.org/D14133

llvm-svn: 251497
2015-10-28 05:13:12 +00:00
Ed Maste add8ee31a4 Correct relocation type in test header comment
llvm-svn: 251242
2015-10-25 16:30:05 +00:00
Tom Stellard d0626804fc ELF/AMDGPU: Text section should be called .hsatext
Reviewers: atanasyan, ruiu

Subscribers: llvm-commits

Differential Revision: http://reviews.llvm.org/D12447

llvm-svn: 248621
2015-09-25 21:42:30 +00:00
Simon Atanasyan 92480f9a20 [Mips] Rejects all --hash-style arguments except 'sysv' in case of MIPS target
MIPS ABI supports only --hash-style=sysv variant.

llvm-svn: 247796
2015-09-16 13:36:32 +00:00
Simon Atanasyan 49c67236f1 [Mips] Do not show an error if R_MIPS_GPREL32 relocation has a non-local target
This matches GNU linker behaviour.

llvm-svn: 247795
2015-09-16 13:36:24 +00:00
Simon Atanasyan e235d45026 [Mips] Support grouping of multiple consecutive relocations in case of N32 and 64-bit MIPS ABIs
llvm-svn: 246337
2015-08-28 21:39:21 +00:00
Simon Atanasyan 6d39140b6e [Mips] Initial support of the MIPS N32 ABI
llvm-svn: 246334
2015-08-28 21:39:00 +00:00
Rafael Espindola c20fee5dc5 Add a -target to this test.
Without it it fails on 32 bit windows.

llvm-svn: 246297
2015-08-28 13:15:05 +00:00
Tom Stellard 15d1fa1bcc ELF: Add AMDGPU ReaderWriter
This is a basic implementation that allows lld to emit binaries
consumable by the HSA runtime.

Differential Revision: http://reviews.llvm.org/D11267

llvm-svn: 246155
2015-08-27 15:55:44 +00:00
Davide Italiano 21e1cd79d0 [LinkerScript] Enforce uniqueness of output object files...
... in order to avoid conflicts when tests are run in parallel.
This is an attempt to fix PR24591.

llvm-svn: 246153
2015-08-27 15:18:43 +00:00
Davide Italiano b3c7fb7f24 [LinkerScript] Fix a crash when matching wildcards.
Submitted by:	  zan jyu via llvm-dev

llvm-svn: 245792
2015-08-22 20:36:19 +00:00
Simon Atanasyan 814b705984 [Mips] Use 'or' for move instead of [d]addu in PLT entries
Patch by Simon Dardis.

Differential Revision: http://reviews.llvm.org/D12103

llvm-svn: 245491
2015-08-19 20:20:10 +00:00
Denis Protivensky 0c8beb1c95 [LinkerScript] Process program header in PHDRS command
Add PT_PHDR segment depending on its availability in linker script's
PHDRS command, fallback if no linker script is given.
Handle FILEHDR, PHDRS and FLAGS attributes of program header.

Differential Revision: http://reviews.llvm.org/D11589

llvm-svn: 244743
2015-08-12 12:31:35 +00:00
Rafael Espindola 904c81dc9e Add a test for our handling of shndx.
It was already working, but missing a test.

llvm-svn: 244477
2015-08-10 18:28:24 +00:00
Tom Stellard 01da42d8db ELF: Correctly identify SHT_NOTE sections with !SHF_ALLOC as type*Note
Subscribers: llvm-commits

Differential Revision: http://reviews.llvm.org/D11266

llvm-svn: 244317
2015-08-07 14:36:04 +00:00
Simon Atanasyan 7a400d9af4 [Mips] Implement definition of the DT_MIPS_RLD_MAP_REL dynamic tag
llvm-svn: 243835
2015-08-01 14:53:49 +00:00
Simon Atanasyan 98a857140b [Mips] Implement definition of DT_MIPS_RLD_MAP dynamic tag, .rld_map section, and __RLD_MAP symbol
llvm-svn: 243626
2015-07-30 07:45:55 +00:00
Simon Atanasyan 9191a84392 [Mips] Define _DYNAMIC_LINKING symbol if output is a is dynamically linked executable file
llvm-svn: 243211
2015-07-25 10:18:52 +00:00
Simon Atanasyan 3b6ea7ab4a [Mips] Do not sign-extend addends read from RELA relocation records
llvm-svn: 243208
2015-07-25 10:18:33 +00:00
Denis Protivensky f84acb959b [LinkerScript] Fix case when setting custom NONE segment
llvm-svn: 243006
2015-07-23 11:46:59 +00:00
Denis Protivensky cdc1246750 [ELF] Apply segments from linker scripts
Put sections to segments according to linker scripts if available.
Rework the code of TargetLayout::assignSectionsToSegments so it operates
on the given list of segments, which can be either read from linker scripts
or constructed as before.
Handle NONE segments defined in linker scripts by putting corresponding sections
to PT_NULL segment.
Consider flags set for segments through linker scripts.

Differential Revision: http://reviews.llvm.org/D10918

llvm-svn: 243002
2015-07-23 10:34:30 +00:00
Simon Atanasyan b1600f2eee [Mips] Fix addend writing for R_MIPS_REL32 relocation
llvm-svn: 242760
2015-07-21 05:54:30 +00:00
Simon Atanasyan f9db71eaec [Mips] Handle R_MIPS_JALR relocation to omptimize jalr/jr instructions
llvm-svn: 242759
2015-07-21 05:54:22 +00:00
Adhemerval Zanella 4d0d1babfc [ELF/AArch64] Fix export TLS dynamic symbol
This patch fixes the TLS dynamic variable exportation from .got.plt segments,
created by General-dynamic relocations (TLSDESC).  Current code only export
symbols in dynamic table from .got sections.

llvm-svn: 242142
2015-07-14 13:25:32 +00:00
Rafael Auler 2c4af3ead7 [LinkerScript] Don't create unnecessarily large segments
When using a linker script expression to change the address of a section, even
if the new address is more than a page of distance from the old address, lld
may put everything in the same segment, forcing it to be unnecessarily large.
This patch changes the logic in Segment::assignVirtualAddress() and
Segment::assignFileOffsets() to allow the segment to be sliced into two or more
if it detects a linker script expression that changes a section address.

Differential Revision: http://reviews.llvm.org/D10952

llvm-svn: 242096
2015-07-14 00:34:43 +00:00
Simon Atanasyan b34a080701 [Mips] Support MIPS big-endian 32/64-bits targets
llvm-svn: 242014
2015-07-13 09:11:35 +00:00
Rafael Espindola 9c7a623015 Update for llvm change.
llvm-svn: 241489
2015-07-06 19:21:08 +00:00
Simon Atanasyan 1e7b08b68d [ELF] Fix ELF test cases. Do not provide content for bss sections.
llvm-svn: 241378
2015-07-03 23:06:24 +00:00
Simon Atanasyan a87c17a201 [ELF] Define __start_XXX/__stop_XXX symbols where XXX is a section name
This is GNU ELF linker extension used particularly by LibC code.
If input object files contain section named XXX, and the XXX is a valid C
identifier, and there are undefined or weak symbols __start_XXX/__stop_XXX,
linker should define __start_XXX/__stop_XXX symbols point to the begin/end
of the XXX section correspondingly.

For example, without support of this extension statically linked executables
for X86_64 and Mips (maybe other) targets do not flush IO buffers at the end
of executing.

llvm-svn: 241341
2015-07-03 11:25:37 +00:00
Adhemerval Zanella dbd75b7fa0 [ELF/AArch64] Initial General-dynamic TLS support
This patch adds initial general-dynamic TLS support for AArch64.  Currently
no optimization is done to realx for more performance-wise models (initial-exec
or local-exec).  This patch also only currently handles correctly executable
generation, although priliminary DSO support through PLT specific creation
is also added.

With this change clang/llvm bootstrap with lld is possible in static configuration
(some DSO creation fails due missing Linker script support, not AArch64 specific),
although make check also shows some issues.

llvm-svn: 241192
2015-07-01 21:35:39 +00:00
Simon Atanasyan 253125af03 [Mips] Reject R_MIPS_CALL16 against local symbols
llvm-svn: 240765
2015-06-26 07:25:20 +00:00
Simon Atanasyan b7bcff8796 [Mips] Create LA25 stubs for all branch relocations
llvm-svn: 240763
2015-06-26 07:25:06 +00:00
Rafael Espindola 69e942aefe Update for llvm change.
llvm-svn: 240658
2015-06-25 17:04:12 +00:00
Adhemerval Zanella 3ebea27d66 [ELF] Fix .init_array initialization
Some compilers may not add the section symbol in '.symtab' for the
.init_array and 'ldd' just ignore it.  It results in global constructor
not being called in final executable.

This patch add both '.init_array' and '.fini_array' to be added in
Atom graph generation even when the section contains no symbol.  An
already existing testcase is modified to check for such scenario.

The issue fixes the llvm test-suite regressions for both Single
and MultiSource files.

llvm-svn: 240570
2015-06-24 19:26:00 +00:00
Simon Atanasyan 356d7c52b6 [Mips] Support R_MICROMIPS_HI0_LO16 relocation handling
llvm-svn: 240268
2015-06-22 09:27:05 +00:00
Simon Atanasyan f44f854af3 [Mips] Support R_MICROMIPS_LITERAL relocation handling
llvm-svn: 240267
2015-06-22 09:26:57 +00:00
Simon Atanasyan 692e792575 [Mips] Support R_MIPS_LITERAL relocation handling
llvm-svn: 240266
2015-06-22 09:26:48 +00:00
Simon Atanasyan ca0fe2f4a4 [Mips] Support R_MICROMIPS_SUB relocation handling
llvm-svn: 240265
2015-06-22 09:26:41 +00:00
Simon Atanasyan 1af72b898c [Mips] Reject R_MIPS_GPREL32 against external symbols
llvm-svn: 240264
2015-06-22 09:26:33 +00:00
Simon Atanasyan 74a07c5457 [Mips] Fix test case - do not use R_MIPS_GPREL32 against external symbols
No functional changes.

llvm-svn: 240263
2015-06-22 09:26:25 +00:00
Simon Atanasyan b5d26b1433 [Mips] Reject position-dependent relocations in case of shared library linking
llvm-svn: 240262
2015-06-22 09:26:20 +00:00
Simon Atanasyan 7851f3b111 [Mips] Fix test case - do not use R_MIPS_HI16 for shared library linking
No functional changes.

llvm-svn: 240261
2015-06-22 09:26:12 +00:00
Simon Atanasyan 46d97f246b [Mips] Support R_MICROMIPS_HIGHER / R_MICROMIPS_HIGHEST relocations handling
llvm-svn: 240260
2015-06-22 09:26:05 +00:00
Simon Atanasyan e55110454d [Mips] Support R_MIPS_HIGHER / R_MIPS_HIGHEST relocations handling
llvm-svn: 240259
2015-06-22 09:25:57 +00:00
Simon Atanasyan faf558224d [Mips] Use new llvm-readobj -mips-reginfo flag to check .reginfo content
No functional changes.

llvm-svn: 239962
2015-06-17 22:28:38 +00:00
Simon Atanasyan f8b082a6aa [Mips] Support R_MICROMIPS_GPREL16 / R_MICROMIPS_GPREL7_S2 relocations handling
llvm-svn: 239960
2015-06-17 22:27:54 +00:00
Simon Atanasyan 17478c5804 [Mips] Support R_MIPS_16 relocation handling
llvm-svn: 239959
2015-06-17 22:27:39 +00:00
Adhemerval Zanella b19f5cfee6 [ELF/x86_64] Fix initial-exec TLS access
Current approach for initial-exec in ELF/x86_64 is to create a GOT entry
and change the relocation to R_X86_64_PC32 to be handled as a GOT offfset.
However there are two issues with this approach: 1. the R_X86_64_PC32 is
not really required since the GOT relocation will be handle dynamically and
2. the TLS symbols are not being exported externally and then correct
realocation are not being applied.

This patch fixes the R_X86_64_GOTTPOFF handling by just emitting a
R_X86_64_TPOFF64 dynamically one; it also sets R_X86_64_TPOFF64 to be
handled by runtime one.  For second part, the patches uses a similar
strategy used for aarch64, by reimplementing buildDynamicSymbolTable
from X86_64ExecutableWriter and adding the TLS symbols in the dynamic
symbol table.

Some tests had to be adjusted due the now missing R_X86_64_PC32 relocation.
With this test the simple testcase:

* t1.c:

__thread int t0;
__thread int t1;
__thread int t2;
__thread int t3;

* t0.c:

extern __thread int t0;
extern __thread int t1;
extern __thread int t2;
extern __thread int t3;

__thread int t4;
__thread int t5;
__thread int t6;
__thread int t7;

int main ()
{
  t0 = 1;
  t1 = 2;
  t2 = 3;
  t3 = 4;

  t4 = 5;
  t5 = 6;
  t6 = 7;
  t7 = 8;

  printf ("%i %i %i %i\n", t0, t1, t2, t3);
  printf ("%i %i %i %i\n", t4, t5, t6, t7);

  return 0;
}

Shows correct output for x86_64.

llvm-svn: 239908
2015-06-17 14:00:12 +00:00
Adhemerval Zanella 9c5831f3de [ELF] Fix wrong TBSS size
This patch fixes the wrong .tbss segment size generated for cases where
multiple modules have non initialized threads variables.  For instance:

* t0.c

__thread int x0;
__thread int x1;
__thread int x2;

extern __thread int e0;
extern __thread int e1;
extern __thread int e2;
extern __thread int e3;

int foo0 ()
{
  return x0;
}

int main ()
{
  return x0;
}

* t1.c

__thread int e0;
__thread int e1;
__thread int e2;
__thread int e3;


lld is generating (for aarch64):

  [14] .tbss             NOBITS           0000000000401000  00001000
       0000000000000010  0000000000000000 WAT       0     0     4

Where is just taking in consideration the largest tbss segment, not all
from all objects.  ld generates a correct output:

  [17] .tbss             NOBITS           0000000000410dec  00000dec
       000000000000001c  0000000000000000 WAT       0     0     4

This issue is at 'lib/ReaderWriter/ELF/SegmentChunks.cpp' where
Segment<ELFT>::assignVirtualAddress is setting wrong slice values, not taking care
of although tbss segments file size does noy play role in other segment virtual
address placement, its size should still be considered.

llvm-svn: 239906
2015-06-17 13:46:07 +00:00
Denis Protivensky 1aaf736d89 [LinkerScript] Add matching of output sections to segments
Add method to query segments for specified output section name.
Return error if the section is assigned to unknown segment.
Check matching of sections to segments during layout on the subject of correctness.
NOTE: no actual functionality of using custom segments is implemented.

Differential Revision: http://reviews.llvm.org/D10359

llvm-svn: 239719
2015-06-15 08:00:51 +00:00