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Rollup merge of #130747 - folkertdev:c-cmse-nonsecure-entry-error-messages, r=compiler-errors

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improve error messages for `C-cmse-nonsecure-entry` functions

fixes https://github.com/rust-lang/rust/issues/81347

tracking issue: https://github.com/rust-lang/rust/issues/75835

brings error messages and testing for `C-cmse-nonsecure-entry` in line with `C-cmse-nonsecure-call`.

r? `@compiler-errors`
This commit is contained in:
Matthias Krüger 2024-10-15 05:12:35 +02:00 committed by GitHub
commit 731e360d15
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GPG Key ID: B5690EEEBB952194
14 changed files with 612 additions and 108 deletions
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15
compiler/rustc_hir_analysis/messages.ftl
View File

@ -68,18 +68,21 @@ hir_analysis_closure_implicit_hrtb = implicit types in closure signatures are fo
hir_analysis_cmse_call_generic =
function pointers with the `"C-cmse-nonsecure-call"` ABI cannot contain generics in their type
hir_analysis_cmse_call_inputs_stack_spill =
arguments for `"C-cmse-nonsecure-call"` function too large to pass via registers
hir_analysis_cmse_entry_generic =
functions with the `"C-cmse-nonsecure-entry"` ABI cannot contain generics in their type
hir_analysis_cmse_inputs_stack_spill =
arguments for `"{$abi_name}"` function too large to pass via registers
.label = {$plural ->
[false] this argument doesn't
*[true] these arguments don't
} fit in the available registers
.note = functions with the `"C-cmse-nonsecure-call"` ABI must pass all their arguments via the 4 32-bit available argument registers
.note = functions with the `"{$abi_name}"` ABI must pass all their arguments via the 4 32-bit available argument registers
hir_analysis_cmse_call_output_stack_spill =
return value of `"C-cmse-nonsecure-call"` function too large to pass via registers
hir_analysis_cmse_output_stack_spill =
return value of `"{$abi_name}"` function too large to pass via registers
.label = this type doesn't fit in the available registers
.note1 = functions with the `"C-cmse-nonsecure-call"` ABI must pass their result via the available return registers
.note1 = functions with the `"{$abi_name}"` ABI must pass their result via the available return registers
.note2 = the result must either be a (transparently wrapped) i64, u64 or f64, or be at most 4 bytes in size
hir_analysis_coerce_unsized_may = the trait `{$trait_name}` may only be implemented for a coercion between structures

17
compiler/rustc_hir_analysis/src/errors.rs
View File

@ -1627,23 +1627,25 @@ pub(crate) struct InvalidReceiverTy<'tcx> {
pub(crate) struct EffectsWithoutNextSolver;
#[derive(Diagnostic)]
#[diag(hir_analysis_cmse_call_inputs_stack_spill, code = E0798)]
#[diag(hir_analysis_cmse_inputs_stack_spill, code = E0798)]
#[note]
pub(crate) struct CmseCallInputsStackSpill {
pub(crate) struct CmseInputsStackSpill {
#[primary_span]
#[label]
pub span: Span,
pub plural: bool,
pub abi_name: &'static str,
}
#[derive(Diagnostic)]
#[diag(hir_analysis_cmse_call_output_stack_spill, code = E0798)]
#[diag(hir_analysis_cmse_output_stack_spill, code = E0798)]
#[note(hir_analysis_note1)]
#[note(hir_analysis_note2)]
pub(crate) struct CmseCallOutputStackSpill {
pub(crate) struct CmseOutputStackSpill {
#[primary_span]
#[label]
pub span: Span,
pub abi_name: &'static str,
}
#[derive(Diagnostic)]
@ -1659,3 +1661,10 @@ pub(crate) struct BadReturnTypeNotation {
#[primary_span]
pub span: Span,
}
#[derive(Diagnostic)]
#[diag(hir_analysis_cmse_entry_generic, code = E0798)]
pub(crate) struct CmseEntryGeneric {
#[primary_span]
pub span: Span,
}

157
compiler/rustc_hir_analysis/src/hir_ty_lowering/cmse.rs
View File

@ -1,8 +1,8 @@
use rustc_errors::{DiagCtxtHandle, E0781, struct_span_code_err};
use rustc_hir::{self as hir, HirId};
use rustc_middle::bug;
use rustc_middle::ty::layout::LayoutError;
use rustc_middle::ty::{self, ParamEnv, TyCtxt};
use rustc_span::Span;
use rustc_target::spec::abi;
use crate::errors;
@ -17,61 +17,104 @@ pub(crate) fn validate_cmse_abi<'tcx>(
abi: abi::Abi,
fn_sig: ty::PolyFnSig<'tcx>,
) {
if let abi::Abi::CCmseNonSecureCall = abi {
let hir_node = tcx.hir_node(hir_id);
let hir::Node::Ty(hir::Ty {
span: bare_fn_span,
kind: hir::TyKind::BareFn(bare_fn_ty),
..
}) = hir_node
else {
let span = match tcx.parent_hir_node(hir_id) {
hir::Node::Item(hir::Item {
kind: hir::ItemKind::ForeignMod { .. }, span, ..
}) => *span,
_ => tcx.hir().span(hir_id),
let abi_name = abi.name();
match abi {
abi::Abi::CCmseNonSecureCall => {
let hir_node = tcx.hir_node(hir_id);
let hir::Node::Ty(hir::Ty {
span: bare_fn_span,
kind: hir::TyKind::BareFn(bare_fn_ty),
..
}) = hir_node
else {
let span = match tcx.parent_hir_node(hir_id) {
hir::Node::Item(hir::Item {
kind: hir::ItemKind::ForeignMod { .. },
span,
..
}) => *span,
_ => tcx.hir().span(hir_id),
};
struct_span_code_err!(
tcx.dcx(),
span,
E0781,
"the `\"C-cmse-nonsecure-call\"` ABI is only allowed on function pointers"
)
.emit();
return;
};
struct_span_code_err!(
tcx.dcx(),
span,
E0781,
"the `\"C-cmse-nonsecure-call\"` ABI is only allowed on function pointers"
)
.emit();
return;
};
match is_valid_cmse_inputs(tcx, fn_sig) {
Ok(Ok(())) => {}
Ok(Err(index)) => {
// fn(x: u32, u32, u32, u16, y: u16) -> u32,
// ^^^^^^
let span = bare_fn_ty.param_names[index]
.span
.to(bare_fn_ty.decl.inputs[index].span)
.to(bare_fn_ty.decl.inputs.last().unwrap().span);
let plural = bare_fn_ty.param_names.len() - index != 1;
dcx.emit_err(errors::CmseCallInputsStackSpill { span, plural });
}
Err(layout_err) => {
if let Some(err) = cmse_layout_err(layout_err, *bare_fn_span) {
dcx.emit_err(err);
match is_valid_cmse_inputs(tcx, fn_sig) {
Ok(Ok(())) => {}
Ok(Err(index)) => {
// fn(x: u32, u32, u32, u16, y: u16) -> u32,
// ^^^^^^
let span = bare_fn_ty.param_names[index]
.span
.to(bare_fn_ty.decl.inputs[index].span)
.to(bare_fn_ty.decl.inputs.last().unwrap().span);
let plural = bare_fn_ty.param_names.len() - index != 1;
dcx.emit_err(errors::CmseInputsStackSpill { span, plural, abi_name });
}
Err(layout_err) => {
if should_emit_generic_error(abi, layout_err) {
dcx.emit_err(errors::CmseCallGeneric { span: *bare_fn_span });
}
}
}
match is_valid_cmse_output(tcx, fn_sig) {
Ok(true) => {}
Ok(false) => {
let span = bare_fn_ty.decl.output.span();
dcx.emit_err(errors::CmseOutputStackSpill { span, abi_name });
}
Err(layout_err) => {
if should_emit_generic_error(abi, layout_err) {
dcx.emit_err(errors::CmseCallGeneric { span: *bare_fn_span });
}
}
};
}
abi::Abi::CCmseNonSecureEntry => {
let hir_node = tcx.hir_node(hir_id);
let Some(hir::FnSig { decl, span: fn_sig_span, .. }) = hir_node.fn_sig() else {
// might happen when this ABI is used incorrectly. That will be handled elsewhere
return;
};
match is_valid_cmse_output(tcx, fn_sig) {
Ok(true) => {}
Ok(false) => {
let span = bare_fn_ty.decl.output.span();
dcx.emit_err(errors::CmseCallOutputStackSpill { span });
}
Err(layout_err) => {
if let Some(err) = cmse_layout_err(layout_err, *bare_fn_span) {
dcx.emit_err(err);
match is_valid_cmse_inputs(tcx, fn_sig) {
Ok(Ok(())) => {}
Ok(Err(index)) => {
// fn f(x: u32, y: u32, z: u32, w: u16, q: u16) -> u32,
// ^^^^^^
let span = decl.inputs[index].span.to(decl.inputs.last().unwrap().span);
let plural = decl.inputs.len() - index != 1;
dcx.emit_err(errors::CmseInputsStackSpill { span, plural, abi_name });
}
Err(layout_err) => {
if should_emit_generic_error(abi, layout_err) {
dcx.emit_err(errors::CmseEntryGeneric { span: *fn_sig_span });
}
}
}
};
match is_valid_cmse_output(tcx, fn_sig) {
Ok(true) => {}
Ok(false) => {
let span = decl.output.span();
dcx.emit_err(errors::CmseOutputStackSpill { span, abi_name });
}
Err(layout_err) => {
if should_emit_generic_error(abi, layout_err) {
dcx.emit_err(errors::CmseEntryGeneric { span: *fn_sig_span });
}
}
};
}
_ => (),
}
}
@ -152,22 +195,22 @@ fn is_valid_cmse_output<'tcx>(
Ok(ret_ty == tcx.types.i64 || ret_ty == tcx.types.u64 || ret_ty == tcx.types.f64)
}
fn cmse_layout_err<'tcx>(
layout_err: &'tcx LayoutError<'tcx>,
span: Span,
) -> Option<crate::errors::CmseCallGeneric> {
fn should_emit_generic_error<'tcx>(abi: abi::Abi, layout_err: &'tcx LayoutError<'tcx>) -> bool {
use LayoutError::*;
match layout_err {
Unknown(ty) => {
if ty.is_impl_trait() {
None // prevent double reporting of this error
} else {
Some(errors::CmseCallGeneric { span })
match abi {
abi::Abi::CCmseNonSecureCall => {
// prevent double reporting of this error
!ty.is_impl_trait()
}
abi::Abi::CCmseNonSecureEntry => true,
_ => bug!("invalid ABI: {abi}"),
}
}
SizeOverflow(..) | NormalizationFailure(..) | ReferencesError(..) | Cycle(..) => {
None // not our job to report these
false // not our job to report these
}
}
}

77
tests/ui/cmse-nonsecure/cmse-nonsecure-entry/generics.rs Normal file
View File

@ -0,0 +1,77 @@
//@ compile-flags: --target thumbv8m.main-none-eabi --crate-type lib
//@ needs-llvm-components: arm
#![feature(cmse_nonsecure_entry, c_variadic, no_core, lang_items)]
#![no_core]
#[lang = "sized"]
pub trait Sized {}
#[lang = "copy"]
pub trait Copy {}
impl Copy for u32 {}
#[repr(C)]
struct Wrapper<T>(T);
impl<T: Copy> Wrapper<T> {
extern "C-cmse-nonsecure-entry" fn ambient_generic(_: T, _: u32, _: u32, _: u32) -> u64 {
//~^ ERROR [E0798]
0
}
extern "C-cmse-nonsecure-entry" fn ambient_generic_nested(
//~^ ERROR [E0798]
_: Wrapper<T>,
_: u32,
_: u32,
_: u32,
) -> u64 {
0
}
}
extern "C-cmse-nonsecure-entry" fn introduced_generic<U: Copy>(
//~^ ERROR [E0798]
_: U,
_: u32,
_: u32,
_: u32,
) -> u64 {
0
}
extern "C-cmse-nonsecure-entry" fn impl_trait(_: impl Copy, _: u32, _: u32, _: u32) -> u64 {
//~^ ERROR [E0798]
0
}
extern "C-cmse-nonsecure-entry" fn reference(x: &usize) -> usize {
*x
}
trait Trait {}
extern "C-cmse-nonsecure-entry" fn trait_object(x: &dyn Trait) -> &dyn Trait {
//~^ ERROR return value of `"C-cmse-nonsecure-entry"` function too large to pass via registers [E0798]
x
}
extern "C-cmse-nonsecure-entry" fn static_trait_object(
x: &'static dyn Trait,
) -> &'static dyn Trait {
//~^ ERROR return value of `"C-cmse-nonsecure-entry"` function too large to pass via registers [E0798]
x
}
#[repr(transparent)]
struct WrapperTransparent<'a>(&'a dyn Trait);
extern "C-cmse-nonsecure-entry" fn wrapped_trait_object(
x: WrapperTransparent,
) -> WrapperTransparent {
//~^ ERROR return value of `"C-cmse-nonsecure-entry"` function too large to pass via registers [E0798]
x
}
extern "C-cmse-nonsecure-entry" fn c_variadic(_: u32, _: ...) {
//~^ ERROR only foreign, `unsafe extern "C"`, or `unsafe extern "C-unwind"` functions may have a C-variadic arg
//~| ERROR requires `va_list` lang_item
}

78
tests/ui/cmse-nonsecure/cmse-nonsecure-entry/generics.stderr Normal file
View File

@ -0,0 +1,78 @@
error: only foreign, `unsafe extern "C"`, or `unsafe extern "C-unwind"` functions may have a C-variadic arg
--> $DIR/generics.rs:74:55
|
LL | extern "C-cmse-nonsecure-entry" fn c_variadic(_: u32, _: ...) {
| ^^^^^^
error[E0798]: functions with the `"C-cmse-nonsecure-entry"` ABI cannot contain generics in their type
--> $DIR/generics.rs:31:1
|
LL | / extern "C-cmse-nonsecure-entry" fn introduced_generic<U: Copy>(
LL | |
LL | | _: U,
LL | | _: u32,
LL | | _: u32,
LL | | _: u32,
LL | | ) -> u64 {
| |________^
error[E0798]: functions with the `"C-cmse-nonsecure-entry"` ABI cannot contain generics in their type
--> $DIR/generics.rs:41:1
|
LL | extern "C-cmse-nonsecure-entry" fn impl_trait(_: impl Copy, _: u32, _: u32, _: u32) -> u64 {
| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
error[E0798]: functions with the `"C-cmse-nonsecure-entry"` ABI cannot contain generics in their type
--> $DIR/generics.rs:15:5
|
LL | extern "C-cmse-nonsecure-entry" fn ambient_generic(_: T, _: u32, _: u32, _: u32) -> u64 {
| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
error[E0798]: functions with the `"C-cmse-nonsecure-entry"` ABI cannot contain generics in their type
--> $DIR/generics.rs:20:5
|
LL | / extern "C-cmse-nonsecure-entry" fn ambient_generic_nested(
LL | |
LL | | _: Wrapper<T>,
LL | | _: u32,
LL | | _: u32,
LL | | _: u32,
LL | | ) -> u64 {
| |____________^
error[E0798]: return value of `"C-cmse-nonsecure-entry"` function too large to pass via registers
--> $DIR/generics.rs:52:67
|
LL | extern "C-cmse-nonsecure-entry" fn trait_object(x: &dyn Trait) -> &dyn Trait {
| ^^^^^^^^^^ this type doesn't fit in the available registers
|
= note: functions with the `"C-cmse-nonsecure-entry"` ABI must pass their result via the available return registers
= note: the result must either be a (transparently wrapped) i64, u64 or f64, or be at most 4 bytes in size
error[E0798]: return value of `"C-cmse-nonsecure-entry"` function too large to pass via registers
--> $DIR/generics.rs:59:6
|
LL | ) -> &'static dyn Trait {
| ^^^^^^^^^^^^^^^^^^ this type doesn't fit in the available registers
|
= note: functions with the `"C-cmse-nonsecure-entry"` ABI must pass their result via the available return registers
= note: the result must either be a (transparently wrapped) i64, u64 or f64, or be at most 4 bytes in size
error[E0798]: return value of `"C-cmse-nonsecure-entry"` function too large to pass via registers
--> $DIR/generics.rs:69:6
|
LL | ) -> WrapperTransparent {
| ^^^^^^^^^^^^^^^^^^ this type doesn't fit in the available registers
|
= note: functions with the `"C-cmse-nonsecure-entry"` ABI must pass their result via the available return registers
= note: the result must either be a (transparently wrapped) i64, u64 or f64, or be at most 4 bytes in size
error: requires `va_list` lang_item
--> $DIR/generics.rs:74:55
|
LL | extern "C-cmse-nonsecure-entry" fn c_variadic(_: u32, _: ...) {
| ^^^^^^
error: aborting due to 9 previous errors
For more information about this error, try `rustc --explain E0798`.

16
tests/ui/cmse-nonsecure/cmse-nonsecure-entry/params-on-registers.rs
View File

@ -1,16 +0,0 @@
//@ build-pass
//@ compile-flags: --target thumbv8m.main-none-eabi --crate-type lib
//@ needs-llvm-components: arm
#![feature(cmse_nonsecure_entry, no_core, lang_items)]
#![no_core]
#![crate_type = "lib"]
#[lang = "sized"]
trait Sized {}
#[lang = "copy"]
trait Copy {}
impl Copy for u32 {}
#[no_mangle]
pub extern "C-cmse-nonsecure-entry" fn entry_function(_: u32, _: u32, _: u32, d: u32) -> u32 {
d
}

21
tests/ui/cmse-nonsecure/cmse-nonsecure-entry/params-on-stack.rs
View File

@ -1,21 +0,0 @@
//@ build-fail
//@ compile-flags: --target thumbv8m.main-none-eabi --crate-type lib
//@ needs-llvm-components: arm
#![feature(cmse_nonsecure_entry, no_core, lang_items)]
#![no_core]
#[lang = "sized"]
trait Sized {}
#[lang = "copy"]
trait Copy {}
impl Copy for u32 {}
#[no_mangle]
pub extern "C-cmse-nonsecure-entry" fn entry_function(
_: u32,
_: u32,
_: u32,
_: u32,
e: u32,
) -> u32 {
e
}

4
tests/ui/cmse-nonsecure/cmse-nonsecure-entry/params-on-stack.stderr
View File

@ -1,4 +0,0 @@
error: <unknown>:0:0: in function entry_function i32 (i32, i32, i32, i32, i32): secure entry function requires arguments on stack
error: aborting due to 1 previous error

26
tests/ui/cmse-nonsecure/cmse-nonsecure-entry/params-via-stack.rs Normal file
View File

@ -0,0 +1,26 @@
//@ compile-flags: --target thumbv8m.main-none-eabi --crate-type lib
//@ needs-llvm-components: arm
#![feature(cmse_nonsecure_entry, no_core, lang_items)]
#![no_core]
#[lang = "sized"]
trait Sized {}
#[lang = "copy"]
trait Copy {}
impl Copy for u32 {}
#[repr(C, align(16))]
#[allow(unused)]
pub struct AlignRelevant(u32);
#[no_mangle]
pub extern "C-cmse-nonsecure-entry" fn f1(_: u32, _: u32, _: u32, _: u32, _: u32, _: u32) {} //~ ERROR [E0798]
#[no_mangle]
pub extern "C-cmse-nonsecure-entry" fn f2(_: u32, _: u32, _: u32, _: u16, _: u16) {} //~ ERROR [E0798]
#[no_mangle]
pub extern "C-cmse-nonsecure-entry" fn f3(_: u32, _: u64, _: u32) {} //~ ERROR [E0798]
#[no_mangle]
pub extern "C-cmse-nonsecure-entry" fn f4(_: AlignRelevant, _: u32) {} //~ ERROR [E0798]
#[no_mangle]
#[allow(improper_ctypes_definitions)]
pub extern "C-cmse-nonsecure-entry" fn f5(_: [u32; 5]) {} //~ ERROR [E0798]

43
tests/ui/cmse-nonsecure/cmse-nonsecure-entry/params-via-stack.stderr Normal file
View File

@ -0,0 +1,43 @@
error[E0798]: arguments for `"C-cmse-nonsecure-entry"` function too large to pass via registers
--> $DIR/params-via-stack.rs:16:78
|
LL | pub extern "C-cmse-nonsecure-entry" fn f1(_: u32, _: u32, _: u32, _: u32, _: u32, _: u32) {}
| ^^^^^^^^^^^ these arguments don't fit in the available registers
|
= note: functions with the `"C-cmse-nonsecure-entry"` ABI must pass all their arguments via the 4 32-bit available argument registers
error[E0798]: arguments for `"C-cmse-nonsecure-entry"` function too large to pass via registers
--> $DIR/params-via-stack.rs:18:78
|
LL | pub extern "C-cmse-nonsecure-entry" fn f2(_: u32, _: u32, _: u32, _: u16, _: u16) {}
| ^^^ this argument doesn't fit in the available registers
|
= note: functions with the `"C-cmse-nonsecure-entry"` ABI must pass all their arguments via the 4 32-bit available argument registers
error[E0798]: arguments for `"C-cmse-nonsecure-entry"` function too large to pass via registers
--> $DIR/params-via-stack.rs:20:62
|
LL | pub extern "C-cmse-nonsecure-entry" fn f3(_: u32, _: u64, _: u32) {}
| ^^^ this argument doesn't fit in the available registers
|
= note: functions with the `"C-cmse-nonsecure-entry"` ABI must pass all their arguments via the 4 32-bit available argument registers
error[E0798]: arguments for `"C-cmse-nonsecure-entry"` function too large to pass via registers
--> $DIR/params-via-stack.rs:22:64
|
LL | pub extern "C-cmse-nonsecure-entry" fn f4(_: AlignRelevant, _: u32) {}
| ^^^ this argument doesn't fit in the available registers
|
= note: functions with the `"C-cmse-nonsecure-entry"` ABI must pass all their arguments via the 4 32-bit available argument registers
error[E0798]: arguments for `"C-cmse-nonsecure-entry"` function too large to pass via registers
--> $DIR/params-via-stack.rs:26:46
|
LL | pub extern "C-cmse-nonsecure-entry" fn f5(_: [u32; 5]) {}
| ^^^^^^^^ this argument doesn't fit in the available registers
|
= note: functions with the `"C-cmse-nonsecure-entry"` ABI must pass all their arguments via the 4 32-bit available argument registers
error: aborting due to 5 previous errors
For more information about this error, try `rustc --explain E0798`.

84
tests/ui/cmse-nonsecure/cmse-nonsecure-entry/return-via-stack.rs Normal file
View File

@ -0,0 +1,84 @@
//@ compile-flags: --target thumbv8m.main-none-eabi --crate-type lib
//@ needs-llvm-components: arm
#![feature(cmse_nonsecure_entry, no_core, lang_items)]
#![no_core]
#[lang = "sized"]
pub trait Sized {}
#[lang = "copy"]
pub trait Copy {}
impl Copy for u32 {}
impl Copy for u8 {}
#[repr(C)]
pub struct ReprCU64(u64);
#[repr(C)]
pub struct ReprCBytes(u8, u8, u8, u8, u8);
#[repr(C)]
pub struct U64Compound(u32, u32);
#[repr(C, align(16))]
pub struct ReprCAlign16(u16);
#[no_mangle]
pub extern "C-cmse-nonsecure-entry" fn f1() -> ReprCU64 {
//~^ ERROR [E0798]
ReprCU64(0)
}
#[no_mangle]
pub extern "C-cmse-nonsecure-entry" fn f2() -> ReprCBytes {
//~^ ERROR [E0798]
ReprCBytes(0, 1, 2, 3, 4)
}
#[no_mangle]
pub extern "C-cmse-nonsecure-entry" fn f3() -> U64Compound {
//~^ ERROR [E0798]
U64Compound(2, 3)
}
#[no_mangle]
pub extern "C-cmse-nonsecure-entry" fn f4() -> ReprCAlign16 {
//~^ ERROR [E0798]
ReprCAlign16(4)
}
#[no_mangle]
#[allow(improper_ctypes_definitions)]
pub extern "C-cmse-nonsecure-entry" fn f5() -> [u8; 5] {
//~^ ERROR [E0798]
[0xAA; 5]
}
#[no_mangle]
#[allow(improper_ctypes_definitions)]
pub extern "C-cmse-nonsecure-entry" fn u128() -> u128 {
//~^ ERROR [E0798]
123
}
#[no_mangle]
#[allow(improper_ctypes_definitions)]
pub extern "C-cmse-nonsecure-entry" fn i128() -> i128 {
//~^ ERROR [E0798]
456
}
#[repr(Rust)]
pub union ReprRustUnionU64 {
_unused: u64,
}
#[repr(C)]
pub union ReprCUnionU64 {
_unused: u64,
}
#[no_mangle]
#[allow(improper_ctypes_definitions)]
pub extern "C-cmse-nonsecure-entry" fn union_rust() -> ReprRustUnionU64 {
//~^ ERROR [E0798]
ReprRustUnionU64 { _unused: 1 }
}
#[no_mangle]
pub extern "C-cmse-nonsecure-entry" fn union_c() -> ReprCUnionU64 {
//~^ ERROR [E0798]
ReprCUnionU64 { _unused: 2 }
}

84
tests/ui/cmse-nonsecure/cmse-nonsecure-entry/return-via-stack.stderr Normal file
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@ -0,0 +1,84 @@
error[E0798]: return value of `"C-cmse-nonsecure-entry"` function too large to pass via registers
--> $DIR/return-via-stack.rs:25:48
|
LL | pub extern "C-cmse-nonsecure-entry" fn f1() -> ReprCU64 {
| ^^^^^^^^ this type doesn't fit in the available registers
|
= note: functions with the `"C-cmse-nonsecure-entry"` ABI must pass their result via the available return registers
= note: the result must either be a (transparently wrapped) i64, u64 or f64, or be at most 4 bytes in size
error[E0798]: return value of `"C-cmse-nonsecure-entry"` function too large to pass via registers
--> $DIR/return-via-stack.rs:30:48
|
LL | pub extern "C-cmse-nonsecure-entry" fn f2() -> ReprCBytes {
| ^^^^^^^^^^ this type doesn't fit in the available registers
|
= note: functions with the `"C-cmse-nonsecure-entry"` ABI must pass their result via the available return registers
= note: the result must either be a (transparently wrapped) i64, u64 or f64, or be at most 4 bytes in size
error[E0798]: return value of `"C-cmse-nonsecure-entry"` function too large to pass via registers
--> $DIR/return-via-stack.rs:35:48
|
LL | pub extern "C-cmse-nonsecure-entry" fn f3() -> U64Compound {
| ^^^^^^^^^^^ this type doesn't fit in the available registers
|
= note: functions with the `"C-cmse-nonsecure-entry"` ABI must pass their result via the available return registers
= note: the result must either be a (transparently wrapped) i64, u64 or f64, or be at most 4 bytes in size
error[E0798]: return value of `"C-cmse-nonsecure-entry"` function too large to pass via registers
--> $DIR/return-via-stack.rs:40:48
|
LL | pub extern "C-cmse-nonsecure-entry" fn f4() -> ReprCAlign16 {
| ^^^^^^^^^^^^ this type doesn't fit in the available registers
|
= note: functions with the `"C-cmse-nonsecure-entry"` ABI must pass their result via the available return registers
= note: the result must either be a (transparently wrapped) i64, u64 or f64, or be at most 4 bytes in size
error[E0798]: return value of `"C-cmse-nonsecure-entry"` function too large to pass via registers
--> $DIR/return-via-stack.rs:47:48
|
LL | pub extern "C-cmse-nonsecure-entry" fn f5() -> [u8; 5] {
| ^^^^^^^ this type doesn't fit in the available registers
|
= note: functions with the `"C-cmse-nonsecure-entry"` ABI must pass their result via the available return registers
= note: the result must either be a (transparently wrapped) i64, u64 or f64, or be at most 4 bytes in size
error[E0798]: return value of `"C-cmse-nonsecure-entry"` function too large to pass via registers
--> $DIR/return-via-stack.rs:53:50
|
LL | pub extern "C-cmse-nonsecure-entry" fn u128() -> u128 {
| ^^^^ this type doesn't fit in the available registers
|
= note: functions with the `"C-cmse-nonsecure-entry"` ABI must pass their result via the available return registers
= note: the result must either be a (transparently wrapped) i64, u64 or f64, or be at most 4 bytes in size
error[E0798]: return value of `"C-cmse-nonsecure-entry"` function too large to pass via registers
--> $DIR/return-via-stack.rs:59:50
|
LL | pub extern "C-cmse-nonsecure-entry" fn i128() -> i128 {
| ^^^^ this type doesn't fit in the available registers
|
= note: functions with the `"C-cmse-nonsecure-entry"` ABI must pass their result via the available return registers
= note: the result must either be a (transparently wrapped) i64, u64 or f64, or be at most 4 bytes in size
error[E0798]: return value of `"C-cmse-nonsecure-entry"` function too large to pass via registers
--> $DIR/return-via-stack.rs:76:56
|
LL | pub extern "C-cmse-nonsecure-entry" fn union_rust() -> ReprRustUnionU64 {
| ^^^^^^^^^^^^^^^^ this type doesn't fit in the available registers
|
= note: functions with the `"C-cmse-nonsecure-entry"` ABI must pass their result via the available return registers
= note: the result must either be a (transparently wrapped) i64, u64 or f64, or be at most 4 bytes in size
error[E0798]: return value of `"C-cmse-nonsecure-entry"` function too large to pass via registers
--> $DIR/return-via-stack.rs:81:53
|
LL | pub extern "C-cmse-nonsecure-entry" fn union_c() -> ReprCUnionU64 {
| ^^^^^^^^^^^^^ this type doesn't fit in the available registers
|
= note: functions with the `"C-cmse-nonsecure-entry"` ABI must pass their result via the available return registers
= note: the result must either be a (transparently wrapped) i64, u64 or f64, or be at most 4 bytes in size
error: aborting due to 9 previous errors
For more information about this error, try `rustc --explain E0798`.

9
tests/ui/cmse-nonsecure/cmse-nonsecure-entry/trustzone-only.stderr Normal file
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@ -0,0 +1,9 @@
error[E0570]: `"C-cmse-nonsecure-entry"` is not a supported ABI for the current target
--> $DIR/trustzone-only.rs:5:1
|
LL | pub extern "C-cmse-nonsecure-entry" fn entry_function(input: u32) -> u32 {
| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
error: aborting due to 1 previous error
For more information about this error, try `rustc --explain E0570`.

89
tests/ui/cmse-nonsecure/cmse-nonsecure-entry/via-registers.rs Normal file
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@ -0,0 +1,89 @@
//@ build-pass
//@ compile-flags: --target thumbv8m.main-none-eabi --crate-type lib
//@ needs-llvm-components: arm
#![feature(cmse_nonsecure_entry, no_core, lang_items)]
#![no_core]
#![crate_type = "lib"]
#[lang = "sized"]
pub trait Sized {}
#[lang = "copy"]
trait Copy {}
impl Copy for u32 {}
impl Copy for u8 {}
#[repr(transparent)]
pub struct ReprTransparentStruct<T> {
_marker1: (),
_marker2: (),
field: T,
_marker3: (),
}
#[repr(transparent)]
pub enum ReprTransparentEnumU64 {
A(u64),
}
#[repr(C)]
pub struct U32Compound(u16, u16);
#[no_mangle]
pub extern "C-cmse-nonsecure-entry" fn inputs1() {}
#[no_mangle]
pub extern "C-cmse-nonsecure-entry" fn inputs2(_: u32, _: u32, _: u32, _: u32) {}
#[no_mangle]
pub extern "C-cmse-nonsecure-entry" fn inputs3(_: u64, _: u64) {}
#[no_mangle]
#[allow(improper_ctypes_definitions)]
pub extern "C-cmse-nonsecure-entry" fn inputs4(_: u128) {}
#[no_mangle]
pub extern "C-cmse-nonsecure-entry" fn inputs5(_: f64, _: f32, _: f32) {}
#[no_mangle]
pub extern "C-cmse-nonsecure-entry" fn inputs6(_: ReprTransparentStruct<u64>, _: U32Compound) {}
#[no_mangle]
#[allow(improper_ctypes_definitions)]
pub extern "C-cmse-nonsecure-entry" fn inputs7(_: [u32; 4]) {}
#[no_mangle]
pub extern "C-cmse-nonsecure-entry" fn outputs1() -> u32 {
0
}
#[no_mangle]
pub extern "C-cmse-nonsecure-entry" fn outputs2() -> u64 {
0
}
#[no_mangle]
pub extern "C-cmse-nonsecure-entry" fn outputs3() -> i64 {
0
}
#[no_mangle]
pub extern "C-cmse-nonsecure-entry" fn outputs4() -> f64 {
0.0
}
#[no_mangle]
#[allow(improper_ctypes_definitions)]
pub extern "C-cmse-nonsecure-entry" fn outputs5() -> [u8; 4] {
[0xAA; 4]
}
#[no_mangle]
pub extern "C-cmse-nonsecure-entry" fn outputs6() -> ReprTransparentStruct<u64> {
ReprTransparentStruct { _marker1: (), _marker2: (), field: 0xAA, _marker3: () }
}
#[no_mangle]
pub extern "C-cmse-nonsecure-entry" fn outputs7(
) -> ReprTransparentStruct<ReprTransparentStruct<u64>> {
ReprTransparentStruct {
_marker1: (),
_marker2: (),
field: ReprTransparentStruct { _marker1: (), _marker2: (), field: 0xAA, _marker3: () },
_marker3: (),
}
}
#[no_mangle]
pub extern "C-cmse-nonsecure-entry" fn outputs8() -> ReprTransparentEnumU64 {
ReprTransparentEnumU64::A(0)
}
#[no_mangle]
pub extern "C-cmse-nonsecure-entry" fn outputs9() -> U32Compound {
U32Compound(1, 2)
}