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Add support for parsing the DW_AT_ranges attributes

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This enables the DWARF reader to properly parse DW_AT_ranges attributes
in compilation units and functions. Code covered by a function is now
represented by a vector of ranges instead of a single contiguous range
and DW_AT_ranges entries are used to populate it. All the code and tests
that assumed functions to be contiguous entities has been updated to
reflect the change. DW_AT_ranges attributes found in compilation units
are parsed but no data is generated for them as it is not currently needed.

BUG=754

Change-Id: I310391b525aaba0dd329f1e3187486f2e0c6d442
Reviewed-on: https://chromium-review.googlesource.com/1124721
Reviewed-by: Ted Mielczarek <ted.mielczarek@gmail.com>
This commit is contained in:
Gabriele Svelto
2018-08-04 00:59:34 +02:00
committed by Ted Mielczarek
parent 7b98edabb6
commit 16e08520e6
20 changed files with 653 additions and 122 deletions
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3
Makefile.am
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@@ -574,6 +574,7 @@ src_tools_linux_dump_syms_dump_syms_SOURCES = \
src/common/dwarf_cfi_to_module.cc \
src/common/dwarf_cu_to_module.cc \
src/common/dwarf_line_to_module.cc \
src/common/dwarf_range_list_handler.cc \
src/common/language.cc \
src/common/module.cc \
src/common/path_helper.cc \
@@ -622,6 +623,7 @@ src_tools_mac_dump_syms_dump_syms_mac_SOURCES = \
src/common/dwarf_cfi_to_module.cc \
src/common/dwarf_cu_to_module.cc \
src/common/dwarf_line_to_module.cc \
src/common/dwarf_range_list_handler.cc \
src/common/language.cc \
src/common/md5.cc \
src/common/module.cc \
@@ -661,6 +663,7 @@ src_common_dumper_unittest_SOURCES = \
src/common/dwarf_cu_to_module_unittest.cc \
src/common/dwarf_line_to_module.cc \
src/common/dwarf_line_to_module_unittest.cc \
src/common/dwarf_range_list_handler.cc \
src/common/language.cc \
src/common/memory_range_unittest.cc \
src/common/module.cc \