1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
|
// Copyright 2021-2023 Vector 35 Inc.
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
use crate::dwarfdebuginfo::{DebugInfoBuilder, TypeUID};
use crate::helpers::*;
use crate::types::get_type;
use gimli::{constants, DebuggingInformationEntry, Dwarf, Reader, Unit};
use std::ffi::CString;
fn get_parameters<R: Reader<Offset = usize>>(
dwarf: &Dwarf<R>,
unit: &Unit<R>,
entry: &DebuggingInformationEntry<R>,
debug_info_builder: &mut DebugInfoBuilder,
) -> Vec<Option<(CString, TypeUID)>> {
if !entry.has_children() {
vec![]
} else {
// We make a new tree from the current entry to iterate over its children
// TODO : We could instead pass the `entries` object down from parse_dwarf to avoid parsing the same object multiple times
let mut sub_die_tree = unit.entries_tree(Some(entry.offset())).unwrap();
let root = sub_die_tree.root().unwrap();
let mut result = vec![];
let mut children = root.children();
while let Some(child) = children.next().unwrap() {
match child.entry().tag() {
constants::DW_TAG_formal_parameter => {
let name = debug_info_builder.get_name(dwarf, unit, child.entry());
let type_ = get_type(dwarf, unit, child.entry(), debug_info_builder);
if let Some(parameter_name) = name {
if let Some(parameter_type) = type_ {
result.push(Some((parameter_name, parameter_type)));
} else {
result.push(Some((parameter_name, 0)))
}
} else {
result.push(None)
}
}
constants::DW_TAG_unspecified_parameters => (),
_ => (),
}
}
result
}
}
pub fn parse_function_entry<R: Reader<Offset = usize>>(
dwarf: &Dwarf<R>,
unit: &Unit<R>,
entry: &DebuggingInformationEntry<R>,
debug_info_builder: &mut DebugInfoBuilder,
) {
// TODO : Handle OOT, stubs/trampolines
// Collect function properties (if they exist in this DIE)
let full_name = debug_info_builder.get_name(dwarf, unit, entry);
let raw_name = get_raw_name(dwarf, unit, entry);
let return_type = get_type(dwarf, unit, entry, debug_info_builder);
let address = get_start_address(dwarf, unit, entry);
let parameters = get_parameters(dwarf, unit, entry, debug_info_builder);
debug_info_builder.insert_function(full_name, raw_name, return_type, address, parameters);
}
|
