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[ci skip] Move rb_id2str into new LLDB format

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This commit is contained in:
Matt Valentine-House 2022-09-26 17:08:31 +01:00
parent c44367265d
commit 6eac424e5e
Notes: git 2023-03-21 09:11:18 +00:00 
Merged: https://github.com/ruby/ruby/pull/6448
2 changed files with 50 additions and 1 deletions
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2
misc/lldb_cruby.py
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@ -741,7 +741,7 @@ def __lldb_init_module(debugger, internal_dict):
debugger.HandleCommand("command script add -f lldb_cruby.rb_backtrace rbbt")
debugger.HandleCommand("command script add -f lldb_cruby.dump_page dump_page")
debugger.HandleCommand("command script add -f lldb_cruby.dump_page_rvalue dump_page_rvalue")
debugger.HandleCommand("command script add -f lldb_cruby.rb_id2str rb_id2str")
debugger.HandleCommand("command script add -f lldb_cruby.rb_id2str old_rb_id2str")
lldb_rb.rb_base_command.RbBaseCommand.lldb_init(debugger)

49
misc/lldb_rb/commands/rb_id2str_command.py Normal file
View File

@ -0,0 +1,49 @@
import lldb
from lldb_rb.constants import *
from lldb_rb.utils import *
from lldb_rb.rb_base_command import RbBaseCommand
class RbID2StrCommand(RbBaseCommand):
program = "rb_id2str"
help_string = "convert and print a Ruby ID to a C string and print it to the LLDB console"
def call(self, debugger, command, exe_ctx, result):
global_symbols = self.target.FindFirstGlobalVariable("ruby_global_symbols")
id_val = self.frame.EvaluateExpression(command).GetValueAsUnsigned()
num = self.rb_id_to_serial(id_val)
last_id = global_symbols.GetChildMemberWithName("last_id").GetValueAsUnsigned()
ID_ENTRY_SIZE = 2
ID_ENTRY_UNIT = int(self.target.FindFirstGlobalVariable("ID_ENTRY_UNIT").GetValue())
ids = global_symbols.GetChildMemberWithName("ids")
if num <= last_id:
idx = num // ID_ENTRY_UNIT
ary = self.rb_ary_entry(ids, idx, result)
pos = (num % ID_ENTRY_UNIT) * ID_ENTRY_SIZE
id_str = self.rb_ary_entry(ary, pos, result)
RbInspector(debugger, result, self.ruby_globals).inspect(id_str)
def rb_id_to_serial(self, id_val):
if id_val > self.ruby_globals["tLAST_OP_ID"]:
return id_val >> self.ruby_globals["RUBY_ID_SCOPE_SHIFT"]
else:
return id_val
def rb_ary_entry(self, ary, idx, result):
tRArray = self.target.FindFirstType("struct RArray").GetPointerType()
ary = ary.Cast(tRArray)
flags = ary.GetValueForExpressionPath("->flags").GetValueAsUnsigned()
if flags & self.ruby_globals["RUBY_FL_USER1"]:
ptr = ary.GetValueForExpressionPath("->as.ary")
else:
ptr = ary.GetValueForExpressionPath("->as.heap.ptr")
ptr_addr = ptr.GetValueAsUnsigned() + (idx * ptr.GetType().GetByteSize())
return self.target.CreateValueFromAddress("ary_entry[%d]" % idx, lldb.SBAddress(ptr_addr, self.target), ptr.GetType().GetPointeeType())