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Remove obsoleted lldb_yjit.py

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which clearly seems to be written for Ruby 3.1 YJIT that was not
rewritten in Rust yet. Since it has been left there as is, I don't think
anybody is actively using this script. We could add a new one if we need
it again.
This commit is contained in:
Takashi Kokubun 2024-01-08 15:50:09 -08:00
parent 5ecf2d2880
commit 0a30fc6211
1 changed files with 0 additions and 47 deletions
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47
misc/lldb_yjit.py
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@ -1,47 +0,0 @@
#!/usr/bin/env python
#coding: utf-8
#
# Usage: run `command script import -r misc/lldb_yjit.py` on LLDB
#
from __future__ import print_function
import lldb
import os
import shlex
def list_comments(debugger, command, result, internal_dict):
target = debugger.GetSelectedTarget()
process = target.GetProcess()
thread = process.GetSelectedThread()
frame = thread.GetSelectedFrame()
# Get the different types we need
rb_darray_meta_t = target.FindFirstType("rb_darray_meta_t")
codeblock_t = target.FindFirstType("codeblock_t")
yjit_comment = target.FindFirstType("yjit_comment")
# Get the global variables we need
comments = target.FindFirstGlobalVariable("yjit_code_comments")
cb = target.FindFirstGlobalVariable("cb").Cast(codeblock_t.GetPointerType())
# Get the address of the memory block we're using
mem_addr = cb.GetChildMemberWithName("mem_block").GetValueAsUnsigned()
# Find the size of the darray comment list
meta = comments.Cast(rb_darray_meta_t.GetPointerType())
size = meta.GetChildMemberWithName("size").GetValueAsUnsigned()
# Get the address of the block following the metadata header
t_offset = comments.GetValueAsUnsigned() + rb_darray_meta_t.GetByteSize()
# Loop through each comment and print
for t in range(0, size):
addr = lldb.SBAddress(t_offset + (t * yjit_comment.GetByteSize()), target)
comment = target.CreateValueFromAddress("yjit_comment", addr, yjit_comment)
string = comment.GetChildMemberWithName("comment")
comment_offset = mem_addr + comment.GetChildMemberWithName("offset").GetValueAsUnsigned()
print("%0#x %s" % (comment_offset, string.GetSummary()), file = result)
def __lldb_init_module(debugger, internal_dict):
debugger.HandleCommand("command script add -f lldb_yjit.list_comments lc")