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remove special case around peripherals from codegen

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This commit is contained in:
Jorge Aparicio 2017-12-09 13:07:52 +01:00
parent e97afa71ce
commit 1830bdbe5c
1 changed files with 114 additions and 209 deletions
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135
macros/src/trans.rs
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@ -27,12 +27,7 @@ pub fn app(app: &App, ownerships: &Ownerships) -> Tokens {
quote!(#(#root)*)
}
fn idle(
app: &App,
ownerships: &Ownerships,
main: &mut Vec<Tokens>,
root: &mut Vec<Tokens>,
) {
fn idle(app: &App, ownerships: &Ownerships, main: &mut Vec<Tokens>, root: &mut Vec<Tokens>) {
let krate = krate();
let mut mod_items = vec![];
@ -45,8 +40,6 @@ fn idle(
}
if !app.idle.resources.is_empty() {
let device = &app.device;
let mut needs_reexport = false;
for name in &app.idle.resources {
if ownerships[name].is_owned() {
@ -66,7 +59,10 @@ fn idle(
let mut rfields = vec![];
for name in &app.idle.resources {
if ownerships[name].is_owned() {
if let Some(resource) = app.resources.get(name) {
let resource = app.resources.get(name).expect(&format!(
"BUG: resource {} assigned to `idle` has no definition",
name
));
let ty = &resource.ty;
rfields.push(quote! {
@ -83,15 +79,6 @@ fn idle(
#name: #super_::#_name.as_mut(),
}
});
} else {
rfields.push(quote! {
pub #name: &'static mut ::#device::#name,
});
rexprs.push(quote! {
#name: &mut *::#device::#name.get(),
});
}
} else {
rfields.push(quote! {
pub #name: #super_::_resource::#name,
@ -162,16 +149,19 @@ fn init(app: &App, main: &mut Vec<Tokens>, root: &mut Vec<Tokens>) {
let krate = krate();
let mut tys = vec![quote!(init::Peripherals)];
let mut exprs = vec![quote!{
let mut exprs = vec![
quote!{
init::Peripherals {
core: ::#device::CorePeripherals::steal(),
device: ::#device::Peripherals::steal(),
}
}];
},
];
let mut ret = None;
let mut mod_items = vec![];
let (init_resources, late_resources): (Vec<_>, Vec<_>) = app.resources.iter()
let (init_resources, late_resources): (Vec<_>, Vec<_>) = app.resources
.iter()
.partition(|&(_, res)| res.expr.is_some());
if !init_resources.is_empty() {
@ -363,7 +353,9 @@ fn resources(app: &App, ownerships: &Ownerships, root: &mut Vec<Tokens>) {
// For owned resources we don't need claim() or borrow()
}
Ownership::Shared { ceiling } => {
if let Some(resource) = app.resources.get(name) {
let resource = app.resources
.get(name)
.expect(&format!("BUG: resource {} has no definition", name));
let ty = &resource.ty;
let res_rvalue = if resource.expr.is_some() {
quote!(#_name)
@ -436,81 +428,6 @@ fn resources(app: &App, ownerships: &Ownerships, root: &mut Vec<Tokens>) {
}
}
});
} else {
impl_items.push(quote! {
type Data = #device::#name;
fn borrow<'cs>(
&'cs self,
t: &'cs #krate::Threshold,
) -> &'cs #krate::Static<#device::#name> {
assert!(t.value() >= #ceiling);
unsafe {
#krate::Static::ref_(&*#device::#name.get())
}
}
fn borrow_mut<'cs>(
&'cs mut self,
t: &'cs #krate::Threshold,
) -> &'cs mut #krate::Static<#device::#name> {
assert!(t.value() >= #ceiling);
unsafe {
#krate::Static::ref_mut(
&mut *#device::#name.get(),
)
}
}
fn claim<R, F>(
&self,
t: &mut #krate::Threshold,
f: F,
) -> R
where
F: FnOnce(
&#krate::Static<#device::#name>,
&mut #krate::Threshold) -> R
{
unsafe {
#krate::claim(
#krate::Static::ref_(
&*#device::#name.get(),
),
#ceiling,
#device::NVIC_PRIO_BITS,
t,
f,
)
}
}
fn claim_mut<R, F>(
&mut self,
t: &mut #krate::Threshold,
f: F,
) -> R
where
F: FnOnce(
&mut #krate::Static<#device::#name>,
&mut #krate::Threshold) -> R
{
unsafe {
#krate::claim(
#krate::Static::ref_mut(
&mut *#device::#name.get(),
),
#ceiling,
#device::NVIC_PRIO_BITS,
t,
f,
)
}
}
});
}
impls.push(quote! {
#[allow(unsafe_code)]
@ -568,9 +485,7 @@ fn tasks(app: &App, ownerships: &Ownerships, root: &mut Vec<Tokens>) {
let _name = Ident::new(format!("_{}", name.as_ref()));
match ownerships[name] {
Ownership::Shared { ceiling }
if ceiling > task.priority =>
{
Ownership::Shared { ceiling } if ceiling > task.priority => {
needs_threshold = true;
fields.push(quote! {
@ -585,7 +500,10 @@ fn tasks(app: &App, ownerships: &Ownerships, root: &mut Vec<Tokens>) {
}
_ => {
lifetime = Some(quote!('a));
if let Some(resource) = app.resources.get(name) {
let resource = app.resources
.get(name)
.expect(&format!("BUG: resource {} has no definition", name));
needs_reexport = true;
let ty = &resource.ty;
@ -602,18 +520,6 @@ fn tasks(app: &App, ownerships: &Ownerships, root: &mut Vec<Tokens>) {
#name: ::#krate::Static::ref_mut(::#_name.as_mut()),
}
});
} else {
fields.push(quote! {
pub #name:
&'a mut ::#krate::Static<::#device::#name>,
});
exprs.push(quote! {
#name: ::#krate::Static::ref_mut(
&mut *::#device::#name.get(),
),
});
}
}
}
}
@ -674,8 +580,7 @@ fn tasks(app: &App, ownerships: &Ownerships, root: &mut Vec<Tokens>) {
let path = &task.path;
let _name = Ident::new(format!("_{}", name));
let export_name =
Lit::Str(name.as_ref().to_owned(), StrStyle::Cooked);
let export_name = Lit::Str(name.as_ref().to_owned(), StrStyle::Cooked);
root.push(quote! {
#[allow(non_snake_case)]
#[allow(unsafe_code)]