Op 24-10-2012 01:57, Greg Clayton schreef:
On Oct 23, 2012, at 7:48 AM, Carlo Kok <[email protected]> wrote:
Op 22-10-2012 10:43, Carlo Kok schreef:
LLVM's debug info generator is perfect happy with multiple
DW_TAG_compile_unit's in 1 IR file.
Even after compiling to .o, the object file contains two of them,
however when linking with ld (osx) and then loading with LLDB there's
only one eSymbolTypeObjectFile in the file (Which make sense) and an
eSymbolTypeSourceFile "source" before that so during debugging, it only
accepts the first source file for breakpoints. Is there a way to change
how I emit it in LLVM or fix in LLDB to get this to work properly?
My IR (compiled as x86_64):
http://pastebin.com/DAF7nhDe
dwarfdump of the file:
http://pastebin.com/CYarpscv
(looks ok)
The DWARF is _not_ OK. it is truncated and can't find the abbeviation code for
the first DIE inside the compile unit.
Try running dwarfdump with the --verify option (if you are running the MacOSX
version of dwarfdump:
dwarfdump --verify "/Users/ck/Library/Application Support/RemObjects
Software/Oxygene/CrossBox/c30b0ae7-8aaf-4ea4-b102-845951c60691/Build/CocoaApplication1.o"
----------------------------------------------------------------------
File: /Users/ck/Library/Application Support/RemObjects
Software/Oxygene/CrossBox/c30b0ae7-8aaf-4ea4-b102-845951c60691/Build/CocoaApplication1.o
(x86_64)
----------------------------------------------------------------------
Verifying Compile Unit Header chain..... ok
Verifying .debug_info... ok
The reason it looks truncated is because of:
0x00000000: Abbreviation code note found in 'debug_abbrev' class for
code: 100
the LLVM I use uses a dwarf3 attribute that dwarfdump doesn't support yet.
nm of the mach-o executable looks wrong:
http://pastebin.com/EyiWc4Dj
Don't use "nm", it likes to reorder your symbols and the symbol ordering is
very important. Try dsymutil with the -s option:
dsymutil -s ./c30b0ae7-8aaf-4ea4-b102-845951c60691/CocoaApplication1
It looks ok from what I can tell. Though the ".pas" extension on the source
files looks worrysome?
dsymutil: http://pastebin.com/Ju91RHaj
.pas is the extension for the source files my uses.
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