0771bd1711
eh_frame_parser is architecture independent, thus the files have been rearchitectured. Some bugs have been fixed in the test. A README file has also been added to eh_frame_parser host test directory. eh_frame_parser is now able to detect empty gaps in .eh_frame_hdr table (missing DWARF information). Fix a bug occuring when parsing backtraces originated from abort(). Fix build missing dependencies issue. |
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| .. | ||
| esp_private | ||
| eh_frame_parser_impl.h | ||
| linker.ld | ||
| main.c | ||
| Makefile | ||
| README.md | ||
Host test for EH_FRAME_PARSER
This test is meant to be run on a Linux x86(_64) host. The main purpose is to trigger a SIGSEV (NULL pointer) exception at runtime in order to generate the backtrace. It is then checked that the functions in the call stack are indeed correctly determined in the right order.
Requirements
A Linux host, x86 or x86_64. In any case, the example will be compiled with
the option -m32, it is then required to have gcc multilibs.
Compile the example
To compile the example, simply type:
make
Run the code
Execute the binary generated:
./eh_frame_test
If everything goes well, the output should be as is:
All tests passed
Known issue
DWARF instructions in x86 binaries include the instruction DW_CFA_expression.
However, this instruction is not supported by the parser, this is why the test
may print the following message:
Unsupported DWARF opcode 0: 0x10
This is not a big problem as the functions implemented for testing the backtrace will not generate unimplemented DWARF instructions.