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9 Commits

Author SHA1 Message Date
Fangrui Song f0374e7db2 [test] lld/test/: change llvm-objdump single-dash long options to double-dash options 2020-03-15 17:48:36 -07:00
Jordan Rupprecht 9d4a6b1bb2 [llvm-objdump] Further rearrange llvm-objdump sections for compatability 
Summary:
rL371826 rearranged some output from llvm-objdump for GNU objdump compatability, but there still seem to be some more.

I think this rearrangement is a little closer. Overview of the ordering which matches GNU objdump:
* Archive headers
* File headers
* Section headers
* Symbol table
* Dwarf debugging
* Relocations (if `--disassemble` is not used)
* Section contents
* Disassembly

Reviewers: jhenderson, justice_adams, grimar, ychen, espindola

Reviewed By: jhenderson

Subscribers: aprantl, emaste, arichardson, jrtc27, atanasyan, seiya, llvm-commits, MaskRay

Tags: #llvm

Differential Revision: https://reviews.llvm.org/D68066

llvm-svn: 373671
 2019-10-03 22:01:08 +00:00
Fangrui Song d4306e90cb [ELF][X86] Allow PT_LOAD to have overlapping p_offset ranges on EM_X86_64 
Port the D64906 technique to EM_X86_64.

Differential Revision: https://reviews.llvm.org/D67482

llvm-svn: 371958
 2019-09-16 07:05:34 +00:00
Simon Atanasyan 37a1d6eca3 Convert the eh-frame-hdr-abs-fde.s test to use x86 as a target architecture 
The test checks common functionality. Let's use `x86` (generic LLD target)
as a target architecture.

llvm-svn: 354336
 2019-02-19 15:17:43 +00:00
Fangrui Song eb75b8f8f7 [ELF] Move `# REQUIRES:` line to the top 
llvm-svn: 335625
 2018-06-26 16:58:19 +00:00
Simon Atanasyan 2bd98af563 [ELF][MIPS] Exclude mips .got from PT_GNU_RELRO segment 
On MIPS .got section cannot be included into the PT_GNU_RELRO segment.
Sometimes it might work, but in general it is unsupported. One of the
problem is that all sections marked by SHF_MIPS_GPREL should be grouped
together because data in these sections is addressable with a gp
relative address, but such sections might be writable.

This patch exclude mips .got from PT_GNU_RELRO segment and group
SHF_MIPS_GPREL sections.

llvm-svn: 292161
 2017-01-16 21:17:23 +00:00
George Rimar 3fb5a6dc9e [ELF] - Add support of proccessing of the rest allocatable synthetic sections from linkerscript. 
This change continues what was started by D27040
Now all allocatable synthetics should be available from script side.

Differential revision: https://reviews.llvm.org/D27131

llvm-svn: 288150
 2016-11-29 16:05:27 +00:00
Rafael Espindola a22b082e46 Always create a .got on mips. 
The _gp* family of symbols is defined as an offset in .got, and it is
not at all clear what should happen when .got is not defined.

This will allow some simplifications on how these symbols are handled.

llvm-svn: 266063
 2016-04-12 13:21:13 +00:00
Simon Atanasyan ea423e261f [ELF] Fix reading of PC values of FDEs 
The patch fixes two related problems:
- If CIE augmentation string has 'L' token the CIE contains a byte
  defines LSDA encoding. We should skip this byte in `getFdeEncoding`
  routine. Before this fix we do not skip it and if the next token
  is 'R' treat this byte as FDE encoding.
- FDE encoding format has separate flags e.g. DW_EH_PE_pcrel for
  definition of relative pointers. We should add .eh_frame address to
  the PC value iif the DW_EH_PE_pcrel is specified.

http://www.airs.com/blog/archives/460

There is one more not fixed problem in this code. If PC value is encoded
using signed relative format e.g. DW_EH_PE_sdata4 | DW_EH_PE_pcrel we
should sign extend result of read32 to perform calculation correctly.
I am going to fix that in a separate patch.

Differential Revision: http://reviews.llvm.org/D17733

llvm-svn: 262461
 2016-03-02 05:38:42 +00:00