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use std::ops::DerefMut;
use std::result;
use std::vec::Vec;
use crate::common::SectionId;
use crate::write::{
DebugAbbrev, DebugFrame, DebugInfo, DebugInfoReference, DebugLine, DebugLineStr, DebugLoc,
DebugLocLists, DebugRanges, DebugRngLists, DebugStr, EhFrame, Writer,
};
macro_rules! define_section {
($name:ident, $offset:ident, $docs:expr) => {
#[doc=$docs]
#[derive(Debug, Default)]
pub struct $name<W: Writer>(pub W);
impl<W: Writer> $name<W> {
/// Return the offset of the next write.
pub fn offset(&self) -> $offset {
$offset(self.len())
}
}
impl<W: Writer> From<W> for $name<W> {
#[inline]
fn from(w: W) -> Self {
$name(w)
}
}
impl<W: Writer> Deref for $name<W> {
type Target = W;
#[inline]
fn deref(&self) -> &W {
&self.0
}
}
impl<W: Writer> DerefMut for $name<W> {
#[inline]
fn deref_mut(&mut self) -> &mut W {
&mut self.0
}
}
impl<W: Writer> Section<W> for $name<W> {
#[inline]
fn id(&self) -> SectionId {
SectionId::$name
}
}
};
}
/// Functionality common to all writable DWARF sections.
pub trait Section<W: Writer>: DerefMut<Target = W> {
/// Returns the DWARF section kind for this type.
fn id(&self) -> SectionId;
/// Returns the ELF section name for this type.
fn name(&self) -> &'static str {
self.id().name()
}
}
/// All of the writable DWARF sections.
#[derive(Debug, Default)]
pub struct Sections<W: Writer> {
/// The `.debug_abbrev` section.
pub debug_abbrev: DebugAbbrev<W>,
/// The `.debug_info` section.
pub debug_info: DebugInfo<W>,
/// The `.debug_line` section.
pub debug_line: DebugLine<W>,
/// The `.debug_line_str` section.
pub debug_line_str: DebugLineStr<W>,
/// The `.debug_ranges` section.
pub debug_ranges: DebugRanges<W>,
/// The `.debug_rnglists` section.
pub debug_rnglists: DebugRngLists<W>,
/// The `.debug_loc` section.
pub debug_loc: DebugLoc<W>,
/// The `.debug_loclists` section.
pub debug_loclists: DebugLocLists<W>,
/// The `.debug_str` section.
pub debug_str: DebugStr<W>,
/// The `.debug_frame` section.
pub debug_frame: DebugFrame<W>,
/// The `.eh_frame` section.
pub eh_frame: EhFrame<W>,
/// Unresolved references in the `.debug_info` section.
pub(crate) debug_info_refs: Vec<DebugInfoReference>,
/// Unresolved references in the `.debug_loc` section.
pub(crate) debug_loc_refs: Vec<DebugInfoReference>,
/// Unresolved references in the `.debug_loclists` section.
pub(crate) debug_loclists_refs: Vec<DebugInfoReference>,
}
impl<W: Writer + Clone> Sections<W> {
/// Create a new `Sections` using clones of the given `section`.
pub fn new(section: W) -> Self {
Sections {
debug_abbrev: DebugAbbrev(section.clone()),
debug_info: DebugInfo(section.clone()),
debug_line: DebugLine(section.clone()),
debug_line_str: DebugLineStr(section.clone()),
debug_ranges: DebugRanges(section.clone()),
debug_rnglists: DebugRngLists(section.clone()),
debug_loc: DebugLoc(section.clone()),
debug_loclists: DebugLocLists(section.clone()),
debug_str: DebugStr(section.clone()),
debug_frame: DebugFrame(section.clone()),
eh_frame: EhFrame(section.clone()),
debug_info_refs: Vec::new(),
debug_loc_refs: Vec::new(),
debug_loclists_refs: Vec::new(),
}
}
}
impl<W: Writer> Sections<W> {
/// For each section, call `f` once with a shared reference.
pub fn for_each<F, E>(&self, mut f: F) -> result::Result<(), E>
where
F: FnMut(SectionId, &W) -> result::Result<(), E>,
{
macro_rules! f {
($s:expr) => {
f($s.id(), &$s)
};
}
// Ordered so that earlier sections do not reference later sections.
f!(self.debug_abbrev)?;
f!(self.debug_str)?;
f!(self.debug_line_str)?;
f!(self.debug_line)?;
f!(self.debug_ranges)?;
f!(self.debug_rnglists)?;
f!(self.debug_loc)?;
f!(self.debug_loclists)?;
f!(self.debug_info)?;
f!(self.debug_frame)?;
f!(self.eh_frame)?;
Ok(())
}
/// For each section, call `f` once with a mutable reference.
pub fn for_each_mut<F, E>(&mut self, mut f: F) -> result::Result<(), E>
where
F: FnMut(SectionId, &mut W) -> result::Result<(), E>,
{
macro_rules! f {
($s:expr) => {
f($s.id(), &mut $s)
};
}
// Ordered so that earlier sections do not reference later sections.
f!(self.debug_abbrev)?;
f!(self.debug_str)?;
f!(self.debug_line_str)?;
f!(self.debug_line)?;
f!(self.debug_ranges)?;
f!(self.debug_rnglists)?;
f!(self.debug_loc)?;
f!(self.debug_loclists)?;
f!(self.debug_info)?;
f!(self.debug_frame)?;
f!(self.eh_frame)?;
Ok(())
}
}
|
