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4949c8df9b
This fixes https://bugs.llvm.org/show_bug.cgi?id=40072. GNU addr2line's --functions switch is off by default, has a short alias of -f, and does not take an argument. This patch changes llvm-symbolizer to allow the second and third point (changing the default behaviour may have negative impacts on users). If the option is missing a value, it now treats it as "linkage". This change does cause one previously valid command-line to behave differently. Before --functions <value> was accepted, but now only --functions=<value> is allowed (as well as --functions). The old behaviour will result in the value being treated as a positional argument. The previous testing for --functions=short has been pulled out into a new test that also tests the other accepted values and option formats. Reviewed by: ruiu Differential Revision: https://reviews.llvm.org/D57049 llvm-svn: 351968
130 lines
3.3 KiB
ReStructuredText
130 lines
3.3 KiB
ReStructuredText
llvm-symbolizer - convert addresses into source code locations
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==============================================================
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SYNOPSIS
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--------
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:program:`llvm-symbolizer` [options]
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DESCRIPTION
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-----------
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:program:`llvm-symbolizer` reads object file names and addresses from standard
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input and prints corresponding source code locations to standard output.
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If object file is specified in command line, :program:`llvm-symbolizer`
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processes only addresses from standard input, the rest is output verbatim.
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This program uses debug info sections and symbol table in the object files.
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EXAMPLE
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--------
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.. code-block:: console
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$ cat addr.txt
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a.out 0x4004f4
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/tmp/b.out 0x400528
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/tmp/c.so 0x710
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/tmp/mach_universal_binary:i386 0x1f84
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/tmp/mach_universal_binary:x86_64 0x100000f24
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$ llvm-symbolizer < addr.txt
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main
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/tmp/a.cc:4
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f(int, int)
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/tmp/b.cc:11
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h_inlined_into_g
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/tmp/header.h:2
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g_inlined_into_f
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/tmp/header.h:7
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f_inlined_into_main
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/tmp/source.cc:3
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main
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/tmp/source.cc:8
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_main
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/tmp/source_i386.cc:8
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_main
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/tmp/source_x86_64.cc:8
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$ cat addr2.txt
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0x4004f4
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0x401000
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$ llvm-symbolizer -obj=a.out < addr2.txt
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main
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/tmp/a.cc:4
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foo(int)
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/tmp/a.cc:12
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$cat addr.txt
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0x40054d
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$llvm-symbolizer -inlining -print-address -pretty-print -obj=addr.exe < addr.txt
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0x40054d: inc at /tmp/x.c:3:3
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(inlined by) main at /tmp/x.c:9:0
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$llvm-symbolizer -inlining -pretty-print -obj=addr.exe < addr.txt
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inc at /tmp/x.c:3:3
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(inlined by) main at /tmp/x.c:9:0
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OPTIONS
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-------
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.. option:: -obj, -exe, -e
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Path to object file to be symbolized.
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.. option:: -functions[=<none|short|linkage>], -f
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Specify the way function names are printed (omit function name,
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print short function name, or print full linkage name, respectively).
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Defaults to ``linkage``.
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.. option:: -use-symbol-table
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Prefer function names stored in symbol table to function names
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in debug info sections. Defaults to true.
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.. option:: -demangle, -C
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Print demangled function names. Defaults to true.
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.. option:: -no-demangle
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Don't print demangled function names.
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.. option:: -inlining
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If a source code location is in an inlined function, prints all the
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inlnied frames. Defaults to true.
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.. option:: -default-arch
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If a binary contains object files for multiple architectures (e.g. it is a
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Mach-O universal binary), symbolize the object file for a given architecture.
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You can also specify architecture by writing ``binary_name:arch_name`` in the
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input (see example above). If architecture is not specified in either way,
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address will not be symbolized. Defaults to empty string.
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.. option:: -dsym-hint=<path/to/file.dSYM>
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(Darwin-only flag). If the debug info for a binary isn't present in the default
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location, look for the debug info at the .dSYM path provided via the
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``-dsym-hint`` flag. This flag can be used multiple times.
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.. option:: -print-address, -addresses, -a
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Print address before the source code location. Defaults to false.
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.. option:: -pretty-print, -p
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Print human readable output. If ``-inlining`` is specified, enclosing scope is
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prefixed by (inlined by). Refer to listed examples.
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.. option:: -basenames, -s
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Strip directories when printing the file path.
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EXIT STATUS
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-----------
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:program:`llvm-symbolizer` returns 0. Other exit codes imply internal program error.
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