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Commit Graph

36 Commits

Author SHA1 Message Date
Kevin Enderby
63cf89d532 The second part of support for generating dwarf for assembly source files. This
generates the dwarf Compile Unit DIE and a dwarf subprogram DIE for each
non-temporary label.

The next part will be to get the clang driver to enable this when assembling
a .s file.  rdar://9275556

llvm-svn: 146262
2011-12-09 18:09:40 +00:00
Bill Wendling
408386e3ef Add a field for the compact unwind encoding.
llvm-svn: 135446
2011-07-19 00:00:05 +00:00
Evan Cheng
10c6820ff4 Move getInitialFrameState from TargetFrameInfo to MCAsmInfo (suggestions for
better location welcome).

llvm-svn: 135438
2011-07-18 22:29:13 +00:00
Rafael Espindola
b7c942431f Add support for producing .deubg_frame sections.
llvm-svn: 131121
2011-05-10 03:54:12 +00:00
Rafael Espindola
0baeced1f4 Don't force relaxation of AdvanceLoc instructions on OS X. gdb is happy with
the smaller encoding and this cuts 270336 bytes from a release version of
clang and 1246272 bytes from a debug build.

llvm-svn: 131067
2011-05-08 14:35:21 +00:00
Rafael Espindola
003a45810d Switch Darwin to the generic CIE/FDE printer.
llvm-svn: 131031
2011-05-06 22:29:04 +00:00
Rafael Espindola
eb5d0cb4f4 GCC uses a different encoding of pointers in the FDE when using
-fno-dwarf2-cfi-asm. Implement the same behavior.

llvm-svn: 130637
2011-05-01 04:49:54 +00:00
Rafael Espindola
a664fdf4cd Add an alternative implementation of CIE and FDE emission that outputs them
in the same order as the one in CodeGen.

llvm-svn: 130471
2011-04-29 02:42:28 +00:00
Rafael Espindola
7bc992c8d3 Add a small temporary hack for producing identical eh_frame sections on OS X.
This removes one of the main advantages of moving eh_frame to MC, but
makes the transition a lot easier to debug (run md5).

llvm-svn: 130379
2011-04-28 04:04:14 +00:00
Rafael Espindola
133c684456 Factor a bit of code to MCStreamer::EmitLabel. Keep track of the last
non private symbol. This will be use for handling

foo:
  .cfi_startproc
  ...

On OS X where we have to create a foo.eh symbol.

llvm-svn: 130305
2011-04-27 15:21:19 +00:00
Rafael Espindola
5c5bb3e9a6 Fix the case of a .cfi_rel_offset before any .cfi_def_cfa_offset.
llvm-svn: 129362
2011-04-12 16:12:03 +00:00
Rafael Espindola
7c4de15c7b Implement .cfi_same_value.
llvm-svn: 129361
2011-04-12 15:31:05 +00:00
Rafael Espindola
3fdd045643 Implement .cfi_remember_state and .cfi_restore_state.
llvm-svn: 122602
2010-12-28 18:36:23 +00:00
Rafael Espindola
c97d642bf7 Relax address updates in the eh_frame section.
llvm-svn: 122591
2010-12-28 05:39:27 +00:00
Rafael Espindola
0552cb0638 Start adding basic support for emitting the call frame instructions.
llvm-svn: 122590
2010-12-28 04:15:37 +00:00
Rafael Espindola
12c30aed07 Add support for .cfi_lsda.
llvm-svn: 122584
2010-12-27 15:56:22 +00:00
Rafael Espindola
e7e67fce10 Add support for the same encodings of the personality function that gnu as
supports.

llvm-svn: 122577
2010-12-27 00:36:05 +00:00
Rafael Espindola
0e665e502d Fixed version of 121434 with no new memory leaks.
llvm-svn: 121471
2010-12-10 07:39:47 +00:00
Rafael Espindola
011e168728 Revert my previous patch to make the valgrind bots happy.
llvm-svn: 121461
2010-12-10 04:01:09 +00:00
Rafael Espindola
03ad1e8f1f Initial support for the cfi directives. This is just enough to get
f:
        .cfi_startproc
        nop
        .cfi_endproc

assembled (on ELF).

llvm-svn: 121434
2010-12-09 23:48:29 +00:00
Rafael Espindola
1bf8d261f1 Remember the contents of leb and dwarfline fragments when relaxing. This avoids
having to evaluate the expression again when writing.

llvm-svn: 120920
2010-12-04 21:58:52 +00:00
Rafael Espindola
50b6170457 Next step: Only pad debug_line when the target is darwin. Add a FIXME to avoid
doing that if the target is darwin10 or newer.

This fixes
*) Direct object emission was producing objects without the workaround on
   darwin9.
*) Assembly printing was producing objects with the workaround on linux.

llvm-svn: 120866
2010-12-04 00:31:13 +00:00
Rafael Espindola
3e119b0bb4 Try to resolve symbol differences early, and if successful create a plain
data fragment. This reduces the time to assemble the test in 8711 from 60s to
54s.

llvm-svn: 120767
2010-12-03 00:55:40 +00:00
Devang Patel
77a1457f1a It may not be an option to skip .debug_line if there are file reference in already emitted debug info. So, for now, emit dummy line table entry to make older linker and assemblers happy. This is not a new behavior, original AsmPrinter emitted similar line table entries.
llvm-svn: 120760
2010-12-03 00:10:48 +00:00
Rafael Espindola
5f582e980e Remove some #includes.
llvm-svn: 119967
2010-11-22 11:53:17 +00:00
Rafael Espindola
7c6bd9e0f9 Add a MCLineSectionOrder vector so that we produce the line tables in a
deterministic order.

llvm-svn: 119795
2010-11-19 07:41:23 +00:00
Rafael Espindola
b33e5e07e1 Change some methods in MCDwarf.cpp to be able to handle an arbitrary
MCStreamer instead of just MCObjectStreamer. Address changes cannot
be as efficient as we have to use DW_LNE_set_addres, but at least
most of the logic is shared.

This will be used so that, with CodeGen still using EmitDwarfLocDirective,
llvm-gcc is able to produce debug_line sections without needing an
assembler that supports .loc.

llvm-svn: 119777
2010-11-19 02:26:16 +00:00
Rafael Espindola
857b73093c Add const.
llvm-svn: 119380
2010-11-16 20:56:23 +00:00
Rafael Espindola
00c5605efc Parse and remember discriminators in .loc line. I try to output them with
another patch.
This lets us parse a bit more of the gcc 4.5 output.

llvm-svn: 118975
2010-11-13 03:18:27 +00:00
Kevin Enderby
f3d8ed8368 Did my commit for the last patch for the .loc directory from the wrong place and
missed a bunch of files.  Here the rest.  Sorry about that.

llvm-svn: 115173
2010-09-30 17:16:09 +00:00
Benjamin Kramer
739963f98e Remove noisy semicolon.
llvm-svn: 112673
2010-08-31 23:38:13 +00:00
Kevin Enderby
cc1c9257f6 This is the second of three patches to implement support for the .loc directive
and output the dwarf line number tables.  This takes the current loc info after
an instruction is assembled and saves the needed info into an object that has
vector and for each section.  These objects will be used for the final patch to 
build and emit the encoded dwarf line number tables.  Again for now this is only
in the Mach-O streamer but at some point will move to a more generic place.

llvm-svn: 112668
2010-08-31 22:55:11 +00:00
Kevin Enderby
024b04ad93 First bit of support for the dwarf .loc directive. This patch updates the
needed parsing for the .loc directive and saves the current info from that
into the context.  The next patch will take the current loc info after an
instruction is assembled and save that info into a vector for each section for
use to build the line number tables.  The patch after that will encode the info
from those vectors into the output file as the dwarf line tables.

llvm-svn: 111956
2010-08-24 20:32:42 +00:00
Kevin Enderby
8303a64b0a Next bit of support for the dwarf .file directive. This patch takes the
previously collected info from the .file directives and outputs the encoded
bytes for it.  For now this is only in the Mach-O streamer but at some point
will move to a more generic place.

llvm-svn: 110617
2010-08-09 22:52:14 +00:00
Benjamin Kramer
85d8649a9c Stop leaking std::strings in GetDwarfFile.
llvm-svn: 109746
2010-07-29 13:53:19 +00:00
Kevin Enderby
3f202e65e8 Added first bit of support for the dwarf .file directive. This patch collects
the info from the .file directive and makes file and directory tables that
will eventually be put out as part of the dwarf info in the output file.

llvm-svn: 109651
2010-07-28 20:55:35 +00:00