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14 Commits

Author SHA1 Message Date
Alexey Samsonov d60859b21e DWARF parser: Fix DWARF-2/3 incompatibility: size of DW_FORM_ref_addr is the same as DW_FORM_addr in DWARF2, and is 4/8 bytes on 32/64-bit DWARF starting from DWARF3. Adding a test for this is a huge pain - generating and uploading pre-built binary with DWARF3 debug info is way too ugly, and writing fine-grained unittests for DebugInfo is impossible, as it doesn't expose any headers in include/llvm. That said, I'm going to choose the second approach and submit the patch exposing DebugInfo headers for review soon enough. 
llvm-svn: 179095
 2013-04-09 14:09:42 +00:00
Eric Christopher 7d1d713f59 Add a space to the end of the line so we don't get "itsbounds" in output. 
llvm-svn: 171487
 2013-01-04 18:30:36 +00:00
Eric Christopher da4b2195fc Extend the dumping infrastructure to deal with additional 
sections for debug info. These are some of the dwo sections from the
DWARF5 split debug info proposal. Update the fission-cu.ll testcase
to show what we should be able to dump more of now.

Work in progress: Ultimately the relocations will be gone for the
dwo section and the strings will be a different form (as well as
the rest of the sections will be included).

llvm-svn: 171428
 2013-01-02 23:52:13 +00:00
Alexey Samsonov c942e6b781 Add support for fetching inlining context (stack of source code locations) 
by instruction address from DWARF.

Add --inlining flag to llvm-dwarfdump to demonstrate and test this functionality,
so that "llvm-dwarfdump --inlining --address=0x..." now works much like
"addr2line -i 0x...", provided that the binary has debug info
(Clang's -gline-tables-only *is* enough).

llvm-svn: 163128
 2012-09-04 08:12:33 +00:00
Eric Christopher 20b897b693 Formatting cleanup. 
llvm-svn: 162499
 2012-08-23 23:26:57 +00:00
Eric Christopher 9142ea7bec Add an assert here in case parsing gave us a NULL compile unit. 
llvm-svn: 162498
 2012-08-23 23:21:11 +00:00
Eric Christopher 0ef6ebc7e4 Tidy. 
llvm-svn: 162421
 2012-08-23 00:52:49 +00:00
Alexey Samsonov e16e16add6 DebugInfo library: add support for fetching absolute paths to source files 
(instead of basenames) from DWARF. Use this behavior in llvm-dwarfdump tool.

Reviewed by Benjamin Kramer.

llvm-svn: 160496
 2012-07-19 07:03:58 +00:00
Alexey Samsonov 5cbbf4ca57 Fix a bug in DebugInfo lib, extend a comment for one of the methods 
llvm-svn: 159707
 2012-07-04 09:42:54 +00:00
Alexey Samsonov f4462fa3ca This patch extends the libLLVMDebugInfo which contains a minimalistic DWARF parser: 
1) DIContext is now able to return function name for a given instruction address (besides file/line info).
2) llvm-dwarfdump accepts flag --functions that prints the function name (if address is specified by --address flag).
3) test case that checks the basic functionality of llvm-dwarfdump added

llvm-svn: 159512
 2012-07-02 05:54:45 +00:00
Benjamin Kramer 6dda032003 DWARF: Print line tables per compile unit, so they get the right address size. 
llvm-svn: 139808
 2011-09-15 18:02:20 +00:00
Benjamin Kramer 3266493603 DWARF: Generate the address lookup table from the DIE tree if .debug_aranges is not available. 
Ported from LLDB.

llvm-svn: 139732
 2011-09-14 20:52:27 +00:00
Benjamin Kramer 1b2a65ca3a DebugInfo: Don't print DIEs multiple times. 
llvm-svn: 139671
 2011-09-14 00:15:32 +00:00
Benjamin Kramer aa2f78f5e6 Sketch out a DWARF parser. 
This introduces a new library to LLVM: libDebugInfo. It will provide debug information
parsing to LLVM. Much of the design and some of the code is taken from the LLDB project.

It also contains an llvm-dwarfdump tool that can dump the abbrevs and DIEs from an
object file. It can be used to write tests for DWARF input and output easily.

llvm-svn: 139627
 2011-09-13 19:42:23 +00:00