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ruby--ruby/misc
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Aaron Patterson 09679f486c Add an lldb script to print YJIT comments 
This script is an lldb helper that just loops through all the comments
stored and prints out the comment along with the address corresponding
to the comment.

For example, I'm crashing in JIT code at address 0x0000000110000168.
Using the `lc` helper I can see that it's probably crashing inside the
exit back to the interpreter

```
(lldb) bt 5
* thread #1, queue = 'com.apple.main-thread', stop reason = EXC_BAD_ACCESS (code=1, address=0x22220021)
    frame #0: 0x0000000110000168
  * frame #1: 0x00000001002b5ff5 miniruby`invoke_block_from_c_bh [inlined] invoke_block(ec=0x0000000100e05350, iseq=0x0000000100c1ff10, self=0x0000000100c76cc0, captured=<unavailable>, cref=0x0000000000000000, type=<unavailable>, opt_pc=<unavailable>) at vm.c:1268:12
    frame #2: 0x00000001002b5f7d miniruby`invoke_block_from_c_bh [inlined] invoke_iseq_block_from_c(ec=<unavailable>, captured=<unavailable>, self=0x0000000100c76cc0, argc=2, argv=<unavailable>, kw_splat=0, passed_block_handler=0x0000000000000000, cref=0x0000000000000000, is_lambda=<unavailable>, me=0x0000000000000000) at vm.c:1340
    frame #3: 0x00000001002b5e14 miniruby`invoke_block_from_c_bh(ec=<unavailable>, block_handler=<unavailable>, argc=<unavailable>, argv=<unavailable>, kw_splat=0, passed_block_handler=0x0000000000000000, cref=0x0000000000000000, is_lambda=<unavailable>, force_blockarg=0) at vm.c:1358
    frame #4: 0x000000010029860b miniruby`rb_yield_values(n=<unavailable>) at vm_eval.c:0
(lldb) lc
0x11000006d "putobject_INT2FIX_1_"
0x110000083 "leave"
0x110000087 "check for interrupts"
0x110000087 "RUBY_VM_CHECK_INTS(ec)"
0x110000098 "check for finish frame"
0x1100000ed "getlocal_WC_0"
0x110000107 "getlocal_WC_1"
0x11000012a "opt_send_without_block"
0x110000139 "opt_send_without_block"
0x11000013c "exit to interpreter"
```
2021-10-20 18:19:37 -04:00
..
expand_tabs.rb
lldb_cruby.py lldb: Get rid of error at unpreserved encodings [ci skip] 2021-09-29 22:31:24 +09:00
lldb_disasm.py
lldb_yjit.py Add an lldb script to print YJIT comments 2021-10-20 18:19:37 -04:00
rb_optparse.bash
rb_optparse.zsh
README
ruby-style.el
test_lldb_cruby.rb

README 

README             this file
rb_optparse.bash   bash completion script
rb_optparse.zsh    zsh completion script
ruby-style.el      Ruby's C/C++ mode style for emacs
lldb_cruby.py      LLDB port of debug utility
test_lldb_cruby.rb test file for LLDB port