From 382107b84741a38b93e818e7f9d84cd7654eb7da Mon Sep 17 00:00:00 2001
From: pompolic <pompolic@special-circumstanc.es>
Date: Fri, 21 Apr 2023 22:57:38 +0200
Subject: [PATCH] Add horrible hack to set fields of our mock objects in memory
---
.../test_stack_frame_parser_context.py | 16 ++++++++++++----
1 file changed, 12 insertions(+), 4 deletions(-)
diff --git a/gdb-port/tests/integration/test_stack_frame_parser_context.py b/gdb-port/tests/integration/test_stack_frame_parser_context.py
index e41f6db..59e3abe 100644
--- a/gdb-port/tests/integration/test_stack_frame_parser_context.py
+++ b/gdb-port/tests/integration/test_stack_frame_parser_context.py
@@ -46,6 +46,13 @@ class TestParserContextWhenReturningFromStackFrames(unittest.TestCase):
def setUp(self):
self.a = Parser("a", 128)
self.b = Parser("b", 32)
+ self.harena_t = gdb.lookup_type("HArena")
+ self.arena = gdb.parse_and_eval("malloc(sizeof(HArena))").cast(self.harena_t.pointer()).dereference() # Quick and dirty way to allocate something in the process GDB is debugging (the inferior)
+ self.hps_t = gdb.lookup_type("HParseState")
+ self.test_parse_state = gdb.parse_and_eval("malloc(sizeof(HParseState))").cast(self.hps_t.pointer()).dereference()
+ # TODO: make this independent of endianness and pointer size
+ gdb.selected_inferior().write_memory(int(self.test_parse_state.address)+(self.hps_t['arena'].bitpos//8), int(self.arena.address).to_bytes(8, 'little')) # horrible, horrible way to set the
+ self.hps_t = self.test_parse_state.address.dereference() # "refresh" the gdb.Value, since the effects of .write_memory() don't seem to show up
self.top_level_parse = TopLevelParse()
self.top_level_parse.parser_objs[32] = self.b
self.top_level_parse.parser_objs[128] = self.a
@@ -55,10 +62,10 @@ class TestParserContextWhenReturningFromStackFrames(unittest.TestCase):
self.top_level_parse.enter_h_packrat_parse(self.a.address)
#TODO: are we initializing from scratch for every test?
- self.top_level_parse.enter_h_do_parse(400, 256, self.a.address)
+ self.top_level_parse.enter_h_do_parse(self.test_parse_state.address, self.arena.address, self.a.address)
self.top_level_parse.parse_virtual(self.a.address)
self.top_level_parse.enter_perform_lowlevel_parse(self.a.address)
- self.top_level_parse.enter_h_do_parse(400, 256, self.b.address)
+ self.top_level_parse.enter_h_do_parse(self.test_parse_state.address, self.arena.address, self.b.address)
self.top_level_parse.parse_virtual(self.b.address)
self.top_level_parse.enter_perform_lowlevel_parse(self.b.address)
@@ -68,8 +75,9 @@ class TestParserContextWhenReturningFromStackFrames(unittest.TestCase):
def test_after_return_from_h_do_parse(self):
hps_t = gdb.lookup_type("HParseState")
- test_parse_state = gdb.Value(b'\x00'*80, hps_t)
+ #test_parse_state = gdb.Value(b'\x00'*80, hps_t)
+ test_parse_state = gdb.parse_and_eval("malloc(sizeof(HParseState))").cast(hps_t.pointer()).dereference()
self.top_level_parse.return_from_perform_lowlevel_parse()
- self.top_level_parse.return_from_h_do_parse(test_parse_state, self.b.address, 0)
+ self.top_level_parse.return_from_h_do_parse(self.test_parse_state.address, self.b.address, 0)
self.assertIs(self.top_level_parse.peek_parser(), self.a)
--
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