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Update gimli

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This commit is contained in:
Philip Craig 2019-02-09 17:15:15 +10:00
parent 1eba7e5f5e
commit e2a869e166
2 changed files with 79 additions and 150 deletions
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2
Cargo.lock generated
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@ -312,7 +312,7 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
[[package]]
name = "gimli"
version = "0.16.1"
source = "git+https://github.com/gimli-rs/gimli.git#955c33ed0056374ab349b1a175f743db3f571e0d"
source = "git+https://github.com/gimli-rs/gimli.git#1278ccb7b6eaa8eea3b9c082f18a282d3c48703b"
dependencies = [
"arrayvec 0.4.10 (registry+https://github.com/rust-lang/crates.io-index)",
"byteorder 1.3.1 (registry+https://github.com/rust-lang/crates.io-index)",

227
src/debuginfo.rs
View File

@ -7,10 +7,9 @@ use std::marker::PhantomData;
use syntax::source_map::FileName;
use gimli::write::{
Address, AttributeValue, CompilationUnit, DebugAbbrev, DebugInfo, DebugLine, DebugRanges,
DebugRngLists, DebugStr, EndianVec, LineProgram, LineProgramId, LineProgramTable, Range,
RangeList, Result, SectionId, StringTable, UnitEntryId, UnitId, UnitTable,
Writer, FileId, LineStringTable, DebugLineStr, LineString,
Address, AttributeValue, DwarfUnit, EndianVec, LineProgram, Range,
RangeList, Result, SectionId, UnitEntryId,
Writer, FileId, LineStringTable, LineString, Sections,
};
use gimli::{Encoding, Format, RunTimeEndian};
@ -51,29 +50,34 @@ fn line_program_add_file(line_program: &mut LineProgram, line_strings: &mut Line
}
}
#[derive(Clone)]
struct DebugReloc {
offset: u32,
size: u8,
name: String,
name: DebugRelocName,
addend: i64,
}
#[derive(Clone)]
enum DebugRelocName {
Section(SectionId),
Symbol(usize),
}
impl DebugReloc {
fn name<'a>(&self, ctx: &'a DebugContext) -> &'a str {
match self.name {
DebugRelocName::Section(id) => id.name(),
DebugRelocName::Symbol(index) => ctx.symbols.get_index(index).unwrap(),
}
}
}
pub struct DebugContext<'tcx> {
// Encoding info
endian: RunTimeEndian,
symbols: indexmap::IndexSet<String>,
// Main data
units: UnitTable,
line_programs: LineProgramTable,
// Side tables
strings: StringTable,
line_strings: LineStringTable,
// Global ids
unit_id: UnitId,
global_line_program: LineProgramId,
dwarf: DwarfUnit,
unit_range_list: RangeList,
_dummy: PhantomData<&'tcx ()>,
@ -89,6 +93,8 @@ impl<'a, 'tcx: 'a> DebugContext<'tcx> {
address_size,
};
let mut dwarf = DwarfUnit::new(encoding);
// FIXME: how to get version when building out of tree?
// Normally this would use option_env!("CFG_VERSION").
let producer = format!("cranelift fn (rustc version {})", "unknown version");
@ -98,34 +104,27 @@ impl<'a, 'tcx: 'a> DebugContext<'tcx> {
None => tcx.crate_name(LOCAL_CRATE).to_string(),
};
let mut strings = StringTable::default();
let mut line_strings = LineStringTable::default();
let mut units = UnitTable::default();
let mut line_programs = LineProgramTable::default();
let global_line_program = line_programs.add(LineProgram::new(
let line_program = LineProgram::new(
encoding,
1,
1,
-5,
14,
LineString::new(comp_dir.as_bytes(), encoding, &mut line_strings),
LineString::new(name.as_bytes(), encoding, &mut line_strings),
LineString::new(comp_dir.as_bytes(), encoding, &mut dwarf.line_strings),
LineString::new(name.as_bytes(), encoding, &mut dwarf.line_strings),
None,
));
);
dwarf.unit.line_program = line_program;
let unit_id = units.add(CompilationUnit::new(encoding));
{
let name = strings.add(&*name);
let comp_dir = strings.add(&*comp_dir);
let name = dwarf.strings.add(&*name);
let comp_dir = dwarf.strings.add(&*comp_dir);
let unit = units.get_mut(unit_id);
let root = unit.root();
let root = unit.get_mut(root);
let root = dwarf.unit.root();
let root = dwarf.unit.get_mut(root);
root.set(
gimli::DW_AT_producer,
AttributeValue::StringRef(strings.add(producer)),
AttributeValue::StringRef(dwarf.strings.add(producer)),
);
root.set(
gimli::DW_AT_language,
@ -133,10 +132,6 @@ impl<'a, 'tcx: 'a> DebugContext<'tcx> {
);
root.set(gimli::DW_AT_name, AttributeValue::StringRef(name));
root.set(gimli::DW_AT_comp_dir, AttributeValue::StringRef(comp_dir));
root.set(
gimli::DW_AT_stmt_list,
AttributeValue::LineProgramRef(global_line_program),
);
root.set(
gimli::DW_AT_low_pc,
AttributeValue::Address(Address::Absolute(0)),
@ -147,14 +142,7 @@ impl<'a, 'tcx: 'a> DebugContext<'tcx> {
endian: target_endian(tcx),
symbols: indexmap::IndexSet::new(),
strings,
line_strings,
units,
line_programs,
unit_id,
global_line_program,
dwarf,
unit_range_list: RangeList(Vec::new()),
_dummy: PhantomData,
@ -164,11 +152,13 @@ impl<'a, 'tcx: 'a> DebugContext<'tcx> {
fn emit_location(&mut self, tcx: TyCtxt<'a, 'tcx, 'tcx>, entry_id: UnitEntryId, span: Span) {
let loc = tcx.sess.source_map().lookup_char_pos(span.lo());
let line_program = self.line_programs.get_mut(self.global_line_program);
let file_id = line_program_add_file(line_program, &mut self.line_strings, &loc.file.name);
let file_id = line_program_add_file(
&mut self.dwarf.unit.line_program,
&mut self.dwarf.line_strings,
&loc.file.name,
);
let unit = self.units.get_mut(self.unit_id);
let entry = unit.get_mut(entry_id);
let entry = self.dwarf.unit.get_mut(entry_id);
entry.set(gimli::DW_AT_decl_file, AttributeValue::FileIndex(file_id));
entry.set(
@ -183,73 +173,37 @@ impl<'a, 'tcx: 'a> DebugContext<'tcx> {
}
pub fn emit(&mut self, artifact: &mut Artifact) {
let unit = self.units.get_mut(self.unit_id);
let unit_range_list_id = unit.ranges.add(self.unit_range_list.clone());
let root = unit.root();
let root = unit.get_mut(root);
let unit_range_list_id = self.dwarf.unit.ranges.add(self.unit_range_list.clone());
let root = self.dwarf.unit.root();
let root = self.dwarf.unit.get_mut(root);
root.set(
gimli::DW_AT_ranges,
AttributeValue::RangeListRef(unit_range_list_id),
);
let mut debug_abbrev = DebugAbbrev::from(WriterRelocate::new(self));
let mut debug_info = DebugInfo::from(WriterRelocate::new(self));
let mut debug_str = DebugStr::from(WriterRelocate::new(self));
let mut debug_line_str = DebugLineStr::from(WriterRelocate::new(self));
let mut debug_line = DebugLine::from(WriterRelocate::new(self));
let mut debug_ranges = DebugRanges::from(WriterRelocate::new(self));
let mut debug_rnglists = DebugRngLists::from(WriterRelocate::new(self));
let mut sections = Sections::new(WriterRelocate::new(self));
self.dwarf.write(&mut sections).unwrap();
let debug_str_offsets = self.strings.write(&mut debug_str).unwrap();
let debug_line_str_offsets = self.line_strings.write(&mut debug_line_str).unwrap();
let _: Result<()> = sections.for_each_mut(|id, section| {
if !section.writer.slice().is_empty() {
artifact
.declare_with(
id.name(),
Decl::DebugSection,
section.writer.take(),
)
.unwrap();
}
Ok(())
});
let debug_line_offsets = self.line_programs.write(&mut debug_line, &debug_line_str_offsets, &debug_str_offsets).unwrap();
self.units
.write(
&mut debug_abbrev,
&mut debug_info,
&mut debug_ranges,
&mut debug_rnglists,
&debug_line_offsets,
&debug_line_str_offsets,
&debug_str_offsets,
)
.unwrap();
macro decl_section($section:ident = $name:ident) {
artifact
.declare_with(
SectionId::$section.name(),
Decl::DebugSection,
$name.0.writer.into_vec(),
)
.unwrap();
}
decl_section!(DebugAbbrev = debug_abbrev);
decl_section!(DebugInfo = debug_info);
decl_section!(DebugStr = debug_str);
decl_section!(DebugLine = debug_line);
decl_section!(DebugLineStr = debug_line_str);
let debug_ranges_not_empty = !debug_ranges.0.writer.slice().is_empty();
if debug_ranges_not_empty {
decl_section!(DebugRanges = debug_ranges);
}
let debug_rnglists_not_empty = !debug_rnglists.0.writer.slice().is_empty();
if debug_rnglists_not_empty {
decl_section!(DebugRngLists = debug_rnglists);
}
macro sect_relocs($section:ident = $name:ident) {
for reloc in $name.0.relocs {
let _: Result<()> = sections.for_each(|id, section| {
for reloc in &section.relocs {
artifact
.link_with(
faerie::Link {
from: SectionId::$section.name(),
to: &reloc.name,
from: id.name(),
to: reloc.name(self),
at: u64::from(reloc.offset),
},
faerie::Reloc::Debug {
@ -259,25 +213,8 @@ impl<'a, 'tcx: 'a> DebugContext<'tcx> {
)
.expect("faerie relocation error");
}
}
sect_relocs!(DebugAbbrev = debug_abbrev);
sect_relocs!(DebugInfo = debug_info);
sect_relocs!(DebugStr = debug_str);
sect_relocs!(DebugLine = debug_line);
sect_relocs!(DebugLineStr = debug_line_str);
if debug_ranges_not_empty {
sect_relocs!(DebugRanges = debug_ranges);
}
if debug_rnglists_not_empty {
sect_relocs!(DebugRngLists = debug_rnglists);
}
}
fn section_name(&self, id: SectionId) -> String {
id.name().to_string()
Ok(())
});
}
}
@ -298,13 +235,12 @@ impl<'a, 'b, 'tcx: 'b> FunctionDebugContext<'a, 'tcx> {
) -> Self {
let (symbol, _) = debug_context.symbols.insert_full(name.to_string());
let unit = debug_context.units.get_mut(debug_context.unit_id);
// FIXME: add to appropriate scope intead of root
let scope = unit.root();
let scope = debug_context.dwarf.unit.root();
let entry_id = unit.add(scope, gimli::DW_TAG_subprogram);
let entry = unit.get_mut(entry_id);
let name_id = debug_context.strings.add(name);
let entry_id = debug_context.dwarf.unit.add(scope, gimli::DW_TAG_subprogram);
let entry = debug_context.dwarf.unit.get_mut(entry_id);
let name_id = debug_context.dwarf.strings.add(name);
entry.set(
gimli::DW_AT_linkage_name,
AttributeValue::StringRef(name_id),
@ -334,8 +270,7 @@ impl<'a, 'b, 'tcx: 'b> FunctionDebugContext<'a, 'tcx> {
isa: &cranelift::codegen::isa::TargetIsa,
source_info_set: &indexmap::IndexSet<SourceInfo>,
) {
let unit = self.debug_context.units.get_mut(self.debug_context.unit_id);
let entry = unit.get_mut(self.entry_id);
let entry = self.debug_context.dwarf.unit.get_mut(self.entry_id);
entry.set(gimli::DW_AT_high_pc, AttributeValue::Udata(code_size as u64));
self.debug_context.unit_range_list.0.push(Range::StartLength {
@ -346,10 +281,7 @@ impl<'a, 'b, 'tcx: 'b> FunctionDebugContext<'a, 'tcx> {
length: code_size as u64,
});
let line_program = self
.debug_context
.line_programs
.get_mut(self.debug_context.global_line_program);
let line_program = &mut self.debug_context.dwarf.unit.line_program;
line_program.begin_sequence(Some(Address::Relative {
symbol: self.symbol,
@ -361,7 +293,7 @@ impl<'a, 'b, 'tcx: 'b> FunctionDebugContext<'a, 'tcx> {
let mut ebbs = func.layout.ebbs().collect::<Vec<_>>();
ebbs.sort_by_key(|ebb| func.offsets[*ebb]); // Ensure inst offsets always increase
let line_strings = &mut self.debug_context.line_strings;
let line_strings = &mut self.debug_context.dwarf.line_strings;
let mut create_row_for_span = |line_program: &mut LineProgram, span: Span| {
let loc = tcx.sess.source_map().lookup_char_pos(span.lo());
let file_id = line_program_add_file(line_program, line_strings, &loc.file.name);
@ -404,23 +336,22 @@ impl<'a, 'b, 'tcx: 'b> FunctionDebugContext<'a, 'tcx> {
}
}
struct WriterRelocate<'a, 'tcx> {
ctx: &'a DebugContext<'tcx>,
#[derive(Clone)]
struct WriterRelocate {
relocs: Vec<DebugReloc>,
writer: EndianVec<RunTimeEndian>,
}
impl<'a, 'tcx> WriterRelocate<'a, 'tcx> {
fn new(ctx: &'a DebugContext<'tcx>) -> Self {
impl WriterRelocate {
fn new(ctx: & DebugContext) -> Self {
WriterRelocate {
ctx,
relocs: Vec::new(),
writer: EndianVec::new(ctx.endian),
}
}
}
impl<'a, 'tcx> Writer for WriterRelocate<'a, 'tcx> {
impl Writer for WriterRelocate {
type Endian = RunTimeEndian;
fn endian(&self) -> Self::Endian {
@ -447,7 +378,7 @@ impl<'a, 'tcx> Writer for WriterRelocate<'a, 'tcx> {
self.relocs.push(DebugReloc {
offset: offset as u32,
size,
name: self.ctx.symbols.get_index(symbol).unwrap().clone(),
name: DebugRelocName::Symbol(symbol),
addend: addend as i64,
});
self.write_word(0, size)
@ -457,11 +388,10 @@ impl<'a, 'tcx> Writer for WriterRelocate<'a, 'tcx> {
fn write_offset(&mut self, val: usize, section: SectionId, size: u8) -> Result<()> {
let offset = self.len() as u32;
let name = self.ctx.section_name(section);
self.relocs.push(DebugReloc {
offset,
size,
name,
name: DebugRelocName::Section(section),
addend: val as i64,
});
self.write_word(0, size)
@ -474,11 +404,10 @@ impl<'a, 'tcx> Writer for WriterRelocate<'a, 'tcx> {
section: SectionId,
size: u8,
) -> Result<()> {
let name = self.ctx.section_name(section);
self.relocs.push(DebugReloc {
offset: offset as u32,
size,
name,
name: DebugRelocName::Section(section),
addend: val as i64,
});
self.write_word_at(offset, 0, size)