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92 Commits

Author SHA1 Message Date
Théophile Bastian 52ea92dcf8 Fix various problems in PC list handling 2018-05-11 15:52:38 +02:00
Théophile Bastian bc05e8270c Add --pc-list switch to generate_eh_elf 2018-05-11 15:52:08 +02:00
Théophile Bastian 13ebe46df2 Refactor extract_pc 
This is meant to make it easy to call the pc extractor from some other
python code as well, to call it from generate_eh_elf.py
 2018-05-11 13:09:58 +02:00
Théophile Bastian 26d7b2afd5 Add C++ code to make use of .pc_list 2018-05-11 13:09:35 +02:00
Théophile Bastian 83b304db95 Add script to extract all valid PCs of ELFs 2018-05-09 17:57:26 +02:00
Théophile Bastian 789e79613c Refactor python shared snippets 2018-05-09 17:55:57 +02:00
Théophile Bastian 066f1f06c1 Add compare_sizes: compare eh_elf vs eh_frame size 2018-05-09 15:32:42 +02:00
Théophile Bastian ba75dfa95f Fix eh_elf path error 
The function `readlink` does not null-terminate its strings…
 2018-05-09 15:32:34 +02:00
Théophile Bastian 7b6ff32465 Enhance Makefile for tests 2018-05-09 12:40:52 +02:00
Théophile Bastian 9aa74ad1f7 Add parameter --remote 
Allows to offload the heavy steps (the compilation .c -> .o) to some
remote server
 2018-05-07 15:49:22 +02:00
Théophile Bastian afe2d0b7c7 stack_walker: adapt to switch generation policies 2018-05-02 15:08:37 +02:00
Théophile Bastian c18027a0d2 generate_eh_elf.py: update to use dwarf-assembly options 2018-05-02 15:08:31 +02:00
Théophile Bastian 4b327c7c56 eh_elf generator: now also producing global switch 2018-05-02 14:58:48 +02:00
Théophile Bastian 601fb2fcd0 Python: make compatible with 3.5 
subprocess.*(…, encoding='utf-8') → .decode('utf-8')
 2018-05-02 14:47:05 +02:00
Théophile Bastian f8cdeda962 Ignore *.bin under tests/ 2018-04-27 17:33:16 +02:00
Théophile Bastian b8f6a2302c Fix stack walk display 2018-04-27 17:32:49 +02:00
Théophile Bastian 4595bb48fb StackWalker: multiple fixes 
Includes adding a few failsafe guards, translating the instruction
pointer before handing it to the eh_elf.so, a few cosmetic changes, ...
 2018-04-27 17:31:53 +02:00
Théophile Bastian f00ec34b4e CodeGenerator: use hex for switches' bounds 2018-04-27 17:07:58 +02:00
Théophile Bastian 467cfbf0cc CodeGenerator: fix badly generated eh_elf 2018-04-27 17:07:34 +02:00
Théophile Bastian 0318fabeb0 generate_eh_elf: compile in C to avoid name mangling 
This made symbol lookup problematic…
 2018-04-27 11:36:36 +02:00
Théophile Bastian 39ecc7a8c1 Use those functions in stack_walked.cpp test 2018-04-27 11:06:25 +02:00
Théophile Bastian f7151c6621 Implement missing stack_walker.cpp functions 2018-04-27 11:06:06 +02:00
Théophile Bastian da38a9d521 Move _fde_func_t typedef to shared .h 2018-04-27 11:05:34 +02:00
Théophile Bastian 69e6c10c36 Add fde_handler_for_pc (untested) 
This is an abstraction function to get the _fde_yyy function out of the
eh_elf for a given PC
 2018-04-26 19:48:00 +02:00
Théophile Bastian 4ab7d0a594 Add a simple stack_walker test 2018-04-26 19:17:34 +02:00
Théophile Bastian f587eadbcc Add a tentative stack walker using eh_elfs 
This is only a beginning: this does so far load the appropriate
eh_elf.so files and read a context. Unwinding is still absent.
 2018-04-26 19:16:01 +02:00
Théophile Bastian be221f68d5 Check mtime to avoid recreating existing so 2018-04-26 19:15:37 +02:00
Théophile Bastian 353a97c49d Refactor code generation: use shared/context_struct.h 
This allows #include'ing `context_struct.h` in the stack walker
implementation as well
 2018-04-25 18:11:59 +02:00
Théophile Bastian 771aec2621 Remove debug output 2018-04-25 17:49:02 +02:00
Théophile Bastian ff0f8c90df Allow unimplemented registers to appear in DWARF 
The presence of such a register — eg. rcx, which is actually used in CFA
on a few lines of libgcc_s.so on my system — will yield an assert(0) in
the produced code, but will at least not fail to compile alltogether.
 2018-04-25 17:34:31 +02:00
Théophile Bastian 31f811eca4 Add python script to compile easily 2018-04-25 17:33:59 +02:00
Théophile Bastian c07b0623e4 Add generation of a lookup function 2018-04-24 17:44:09 +02:00
Théophile Bastian 44543d85d3 Generate compilable C code, untested 2018-04-23 18:58:05 +02:00
Théophile Bastian d13b625cc5 SimpleDwarf, DwarfReader: fix machine registers 2018-04-23 16:46:03 +02:00
Théophile Bastian dc6072e991 Add simple main 2018-04-23 16:22:32 +02:00
Théophile Bastian f6e9b8ebd2 Add Makefile 2018-04-23 16:22:27 +02:00
Théophile Bastian f9f64e9606 SimpleDwarf: few fixes 2018-04-23 16:12:10 +02:00
Théophile Bastian 8bf2e1e49d SimpleDwarf: add pretty-printing operator<< 2018-04-23 15:59:10 +02:00
Théophile Bastian 13e3647629 Add libdwarfpp-based DwarfReader 2018-04-23 15:09:52 +02:00
Théophile Bastian 8c2191f487 Add simplistic Dwarf representation 
This is only representing a small fragment of Dwarf, **on purpose**: in
practice, the huge majority of Dwarf observed in the wild belongs to
this fragment.
 2018-04-23 15:09:48 +02:00
Théophile Bastian 32c3ec3745 Add README 2018-04-20 11:41:06 +02:00
Théophile Bastian c3109c60f4
Initial commit 2018-04-20 11:33:48 +02:00