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move CMSE validation to hir_analysis
This commit is contained in:
Folkert
parent
8a3dd7fb5f
commit
7b63734961
@ -5,6 +5,7 @@ inputs and outputs.
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is relevant.
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- outputs must either fit in 4 bytes, or be a foundational type of
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size 8 (`i64`, `u64`, `f64`).
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- no generics can be used in the signature
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For more information,
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see [arm's aapcs32](https://github.com/ARM-software/abi-aa/releases).
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@ -58,6 +58,19 @@ hir_analysis_cannot_capture_late_bound_ty =
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hir_analysis_closure_implicit_hrtb = implicit types in closure signatures are forbidden when `for<...>` is present
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.label = `for<...>` is here
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hir_analysis_cmse_call_generic =
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function pointers with the `"C-cmse-nonsecure-call"` ABI cannot contain generics in their type
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hir_analysis_cmse_call_inputs_stack_spill =
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arguments for `"C-cmse-nonsecure-call"` function too large to pass via registers
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.label = these arguments don't fit in the available registers
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.note = functions with the `"C-cmse-nonsecure-call"` ABI must pass all their arguments via the 4 32-bit available argument registers
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hir_analysis_cmse_call_output_stack_spill =
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return value of `"C-cmse-nonsecure-call"` function too large to pass via registers
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.label = this type doesn't fit in the available registers
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.note = functions with the `"C-cmse-nonsecure-call"` ABI must pass their result via the available return registers
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hir_analysis_coerce_unsized_may = the trait `{$trait_name}` may only be implemented for a coercion between structures
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hir_analysis_coerce_unsized_multi = implementing the trait `CoerceUnsized` requires multiple coercions
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@ -1287,9 +1287,10 @@ pub(super) fn check_transparent<'tcx>(tcx: TyCtxt<'tcx>, adt: ty::AdtDef<'tcx>)
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(span, trivial, check_non_exhaustive(tcx, ty).break_value())
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});
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let non_trivial_fields = field_infos
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.clone()
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.filter_map(|(span, trivial, _non_exhaustive)| if !trivial { Some(span) } else { None });
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let non_trivial_fields =
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field_infos.clone().filter_map(
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|(span, trivial, _non_exhaustive)| if !trivial { Some(span) } else { None },
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);
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let non_trivial_count = non_trivial_fields.clone().count();
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if non_trivial_count >= 2 {
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bad_non_zero_sized_fields(
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@ -1682,3 +1682,28 @@ pub struct InvalidReceiverTy<'tcx> {
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#[note]
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#[help]
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pub struct EffectsWithoutNextSolver;
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#[derive(Diagnostic)]
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#[diag(hir_analysis_cmse_call_inputs_stack_spill, code = E0798)]
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#[note]
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pub struct CmseCallInputsStackSpill {
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#[primary_span]
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#[label]
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pub span: Span,
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}
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#[derive(Diagnostic)]
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#[diag(hir_analysis_cmse_call_output_stack_spill, code = E0798)]
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#[note]
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pub struct CmseCallOutputStackSpill {
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#[primary_span]
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#[label]
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pub span: Span,
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}
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#[derive(Diagnostic)]
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#[diag(hir_analysis_cmse_call_generic, code = E0798)]
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pub struct CmseCallGeneric {
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#[primary_span]
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pub span: Span,
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}
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152
compiler/rustc_hir_analysis/src/hir_ty_lowering/cmse.rs
Normal file
152
compiler/rustc_hir_analysis/src/hir_ty_lowering/cmse.rs
Normal file
@ -0,0 +1,152 @@
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use rustc_errors::DiagCtxtHandle;
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use rustc_hir as hir;
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use rustc_hir::HirId;
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use rustc_middle::ty::layout::LayoutError;
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use rustc_middle::ty::{self, ParamEnv, TyCtxt};
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use rustc_span::Span;
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use rustc_target::spec::abi;
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use crate::errors;
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/// Check conditions on inputs and outputs that the cmse ABIs impose: arguments and results MUST be
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/// returned via registers (i.e. MUST NOT spill to the stack). LLVM will also validate these
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/// conditions, but by checking them here rustc can emit nicer error messages.
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pub fn validate_cmse_abi<'tcx>(
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tcx: TyCtxt<'tcx>,
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dcx: &DiagCtxtHandle<'_>,
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hir_id: HirId,
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abi: abi::Abi,
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fn_sig: ty::PolyFnSig<'tcx>,
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) {
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if let abi::Abi::CCmseNonSecureCall = abi {
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let hir_node = tcx.hir_node(hir_id);
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let hir::Node::Ty(hir::Ty {
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span: bare_fn_span,
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kind: hir::TyKind::BareFn(bare_fn_ty),
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..
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}) = hir_node
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else {
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// might happen when this ABI is used incorrectly. That will be handled elsewhere
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return;
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};
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// fn(u32, u32, u32, u16, u16) -> u32,
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// ^^^^^^^^^^^^^^^^^^^^^^^ ^^^
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let output_span = bare_fn_ty.decl.output.span();
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let inputs_span = match (
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bare_fn_ty.param_names.first(),
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bare_fn_ty.decl.inputs.first(),
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bare_fn_ty.decl.inputs.last(),
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) {
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(Some(ident), Some(ty1), Some(ty2)) => ident.span.to(ty1.span).to(ty2.span),
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_ => *bare_fn_span,
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};
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match is_valid_cmse_inputs(tcx, fn_sig) {
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Ok(true) => {}
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Ok(false) => {
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dcx.emit_err(errors::CmseCallInputsStackSpill { span: inputs_span });
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}
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Err(layout_err) => {
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if let Some(err) = cmse_layout_err(layout_err, inputs_span) {
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dcx.emit_err(err);
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}
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}
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}
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match is_valid_cmse_output(tcx, fn_sig) {
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Ok(true) => {}
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Ok(false) => {
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dcx.emit_err(errors::CmseCallOutputStackSpill { span: output_span });
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}
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Err(layout_err) => {
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if let Some(err) = cmse_layout_err(layout_err, output_span) {
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dcx.emit_err(err);
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}
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}
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};
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}
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}
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/// Returns whether the inputs will fit into the available registers
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fn is_valid_cmse_inputs<'tcx>(
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tcx: TyCtxt<'tcx>,
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fn_sig: ty::PolyFnSig<'tcx>,
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) -> Result<bool, &'tcx LayoutError<'tcx>> {
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let mut accum = 0u64;
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for arg_def in fn_sig.inputs().iter() {
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let layout = tcx.layout_of(ParamEnv::reveal_all().and(*arg_def.skip_binder()))?;
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let align = layout.layout.align().abi.bytes();
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let size = layout.layout.size().bytes();
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accum += size;
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accum = accum.next_multiple_of(Ord::max(4, align));
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}
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// i.e. 4 32-bit registers
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Ok(accum <= 16)
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}
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/// Returns whether the output will fit into the available registers
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fn is_valid_cmse_output<'tcx>(
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tcx: TyCtxt<'tcx>,
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fn_sig: ty::PolyFnSig<'tcx>,
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) -> Result<bool, &'tcx LayoutError<'tcx>> {
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let mut ret_ty = fn_sig.output().skip_binder();
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let layout = tcx.layout_of(ParamEnv::reveal_all().and(ret_ty))?;
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let size = layout.layout.size().bytes();
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if size <= 4 {
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return Ok(true);
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} else if size > 8 {
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return Ok(false);
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}
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// next we need to peel any repr(transparent) layers off
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'outer: loop {
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let ty::Adt(adt_def, args) = ret_ty.kind() else {
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break;
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};
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if !adt_def.repr().transparent() {
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break;
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}
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// the first field with non-trivial size and alignment must be the data
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for variant_def in adt_def.variants() {
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for field_def in variant_def.fields.iter() {
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let ty = field_def.ty(tcx, args);
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let layout = tcx.layout_of(ParamEnv::reveal_all().and(ty))?;
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if !layout.layout.is_1zst() {
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ret_ty = ty;
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continue 'outer;
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}
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}
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}
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}
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Ok(ret_ty == tcx.types.i64 || ret_ty == tcx.types.u64 || ret_ty == tcx.types.f64)
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}
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fn cmse_layout_err<'tcx>(
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layout_err: &'tcx LayoutError<'tcx>,
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span: Span,
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) -> Option<crate::errors::CmseCallGeneric> {
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use LayoutError::*;
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match layout_err {
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Unknown(ty) => {
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if ty.is_impl_trait() {
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None // prevent double reporting of this error
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} else {
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Some(errors::CmseCallGeneric { span })
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}
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}
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SizeOverflow(..) | NormalizationFailure(..) | ReferencesError(..) | Cycle(..) => {
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None // not our job to report these
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}
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}
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}
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@ -14,6 +14,7 @@
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//! trait references and bounds.
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mod bounds;
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mod cmse;
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pub mod errors;
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pub mod generics;
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mod lint;
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@ -1748,7 +1749,11 @@ impl<'tcx> dyn HirTyLowerer<'tcx> + '_ {
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generic_segments.iter().map(|GenericPathSegment(_, index)| index).collect();
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let _ = self.prohibit_generic_args(
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path.segments.iter().enumerate().filter_map(|(index, seg)| {
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if !indices.contains(&index) { Some(seg) } else { None }
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if !indices.contains(&index) {
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Some(seg)
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} else {
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None
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}
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}),
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GenericsArgsErrExtend::DefVariant,
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);
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@ -2324,6 +2329,9 @@ impl<'tcx> dyn HirTyLowerer<'tcx> + '_ {
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let fn_ty = tcx.mk_fn_sig(input_tys, output_ty, decl.c_variadic, safety, abi);
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let bare_fn_ty = ty::Binder::bind_with_vars(fn_ty, bound_vars);
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// reject function types that violate cmse ABI requirements
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cmse::validate_cmse_abi(self.tcx(), &self.dcx(), hir_id, abi, bare_fn_ty);
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// Find any late-bound regions declared in return type that do
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// not appear in the arguments. These are not well-formed.
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//
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21
tests/ui/cmse-nonsecure/cmse-nonsecure-call/generics.rs
Normal file
21
tests/ui/cmse-nonsecure/cmse-nonsecure-call/generics.rs
Normal file
@ -0,0 +1,21 @@
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//@ compile-flags: --target thumbv8m.main-none-eabi --crate-type lib
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//@ needs-llvm-components: arm
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#![feature(abi_c_cmse_nonsecure_call, no_core, lang_items)]
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#![no_core]
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#[lang = "sized"]
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pub trait Sized {}
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#[lang = "copy"]
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pub trait Copy {}
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impl Copy for u32 {}
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#[repr(C)]
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struct Wrapper<T>(T);
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struct Test<T: Copy> {
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f1: extern "C-cmse-nonsecure-call" fn<U: Copy>(U, u32, u32, u32) -> u64, //~ ERROR cannot find type `U` in this scope
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//~^ ERROR function pointer types may not have generic parameters
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f2: extern "C-cmse-nonsecure-call" fn(impl Copy, u32, u32, u32) -> u64,
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//~^ ERROR `impl Trait` is not allowed in `fn` pointer parameters
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f3: extern "C-cmse-nonsecure-call" fn(T, u32, u32, u32) -> u64, //~ ERROR [E0798]
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f4: extern "C-cmse-nonsecure-call" fn(Wrapper<T>, u32, u32, u32) -> u64, //~ ERROR [E0798]
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}
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47
tests/ui/cmse-nonsecure/cmse-nonsecure-call/generics.stderr
Normal file
47
tests/ui/cmse-nonsecure/cmse-nonsecure-call/generics.stderr
Normal file
@ -0,0 +1,47 @@
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error: function pointer types may not have generic parameters
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--> $DIR/generics.rs:15:42
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LL | f1: extern "C-cmse-nonsecure-call" fn<U: Copy>(U, u32, u32, u32) -> u64,
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| ^^^^^^^^^
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error[E0412]: cannot find type `U` in this scope
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--> $DIR/generics.rs:15:52
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LL | struct Test<T: Copy> {
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| - similarly named type parameter `T` defined here
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LL | f1: extern "C-cmse-nonsecure-call" fn<U: Copy>(U, u32, u32, u32) -> u64,
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| ^
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help: a type parameter with a similar name exists
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|
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LL | f1: extern "C-cmse-nonsecure-call" fn<U: Copy>(T, u32, u32, u32) -> u64,
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| ~
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help: you might be missing a type parameter
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LL | struct Test<T: Copy, U> {
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| +++
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error[E0562]: `impl Trait` is not allowed in `fn` pointer parameters
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--> $DIR/generics.rs:17:43
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LL | f2: extern "C-cmse-nonsecure-call" fn(impl Copy, u32, u32, u32) -> u64,
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| ^^^^^^^^^
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|
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= note: `impl Trait` is only allowed in arguments and return types of functions and methods
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error[E0798]: function pointers with the `"C-cmse-nonsecure-call"` ABI cannot contain generics in their type
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--> $DIR/generics.rs:19:43
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|
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LL | f3: extern "C-cmse-nonsecure-call" fn(T, u32, u32, u32) -> u64,
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| ^^^^^^^^^^^^^^^^
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error[E0798]: function pointers with the `"C-cmse-nonsecure-call"` ABI cannot contain generics in their type
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--> $DIR/generics.rs:20:43
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|
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LL | f4: extern "C-cmse-nonsecure-call" fn(Wrapper<T>, u32, u32, u32) -> u64,
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| ^^^^^^^^^^^^^^^^^^^^^^^^^
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error: aborting due to 5 previous errors
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Some errors have detailed explanations: E0412, E0562, E0798.
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For more information about an error, try `rustc --explain E0412`.
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@ -1,7 +1,6 @@
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//@ build-fail
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//@ compile-flags: --target thumbv8m.main-none-eabi --crate-type lib
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//@ needs-llvm-components: arm
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#![feature(abi_c_cmse_nonsecure_call, no_core, lang_items, intrinsics)]
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#![feature(abi_c_cmse_nonsecure_call, no_core, lang_items)]
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#![no_core]
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#[lang = "sized"]
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pub trait Sized {}
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@ -15,15 +14,10 @@ pub struct AlignRelevant(u32);
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#[no_mangle]
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pub fn test(
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f1: extern "C-cmse-nonsecure-call" fn(u32, u32, u32, u32, u32) -> u32,
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f2: extern "C-cmse-nonsecure-call" fn(u32, u32, u32, u16, u16) -> u32,
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f3: extern "C-cmse-nonsecure-call" fn(u32, u64, u32) -> u32,
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f4: extern "C-cmse-nonsecure-call" fn(AlignRelevant, u32) -> u32,
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f5: extern "C-cmse-nonsecure-call" fn([u32; 5]) -> u32,
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f1: extern "C-cmse-nonsecure-call" fn(u32, u32, u32, u32, u32), //~ ERROR [E0798]
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f2: extern "C-cmse-nonsecure-call" fn(u32, u32, u32, u16, u16), //~ ERROR [E0798]
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f3: extern "C-cmse-nonsecure-call" fn(u32, u64, u32), //~ ERROR [E0798]
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f4: extern "C-cmse-nonsecure-call" fn(AlignRelevant, u32), //~ ERROR [E0798]
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f5: extern "C-cmse-nonsecure-call" fn([u32; 5]), //~ ERROR [E0798]
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) {
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f1(1, 2, 3, 4, 5); //~ ERROR [E0798]
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f2(1, 2, 3, 4, 5); //~ ERROR [E0798]
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f3(1, 2, 3); //~ ERROR [E0798]
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f4(AlignRelevant(1), 2); //~ ERROR [E0798]
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f5([0xAA; 5]); //~ ERROR [E0798]
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}
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@ -1,57 +1,42 @@
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error[E0798]: arguments for `C-cmse-nonsecure-call` function too large to pass via registers
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--> $DIR/params-via-stack.rs:24:5
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error[E0798]: arguments for `"C-cmse-nonsecure-call"` function too large to pass via registers
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--> $DIR/params-via-stack.rs:17:43
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|
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LL | f1: extern "C-cmse-nonsecure-call" fn(u32, u32, u32, u32, u32) -> u32,
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| -- this function uses the `C-cmse-nonsecure-call` ABI
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...
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LL | f1(1, 2, 3, 4, 5);
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| ^^^^^^^^^^^^^^^^^ but its arguments don't fit in the available registers
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LL | f1: extern "C-cmse-nonsecure-call" fn(u32, u32, u32, u32, u32),
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| ^^^^^^^^^^^^^^^^^^^^^^^ these arguments don't fit in the available registers
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|
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= note: functions with the `C-cmse-nonsecure-call` ABI must pass all their arguments via the 4 32-bit available argument registers
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= note: functions with the `"C-cmse-nonsecure-call"` ABI must pass all their arguments via the 4 32-bit available argument registers
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error[E0798]: arguments for `C-cmse-nonsecure-call` function too large to pass via registers
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--> $DIR/params-via-stack.rs:25:5
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error[E0798]: arguments for `"C-cmse-nonsecure-call"` function too large to pass via registers
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--> $DIR/params-via-stack.rs:18:43
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|
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LL | f2: extern "C-cmse-nonsecure-call" fn(u32, u32, u32, u16, u16) -> u32,
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| -- this function uses the `C-cmse-nonsecure-call` ABI
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...
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LL | f2(1, 2, 3, 4, 5);
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| ^^^^^^^^^^^^^^^^^ but its arguments don't fit in the available registers
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LL | f2: extern "C-cmse-nonsecure-call" fn(u32, u32, u32, u16, u16),
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| ^^^^^^^^^^^^^^^^^^^^^^^ these arguments don't fit in the available registers
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|
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= 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 `"C-cmse-nonsecure-call"` ABI must pass all their arguments via the 4 32-bit available argument registers
|
||||
|
||||
error[E0798]: arguments for `C-cmse-nonsecure-call` function too large to pass via registers
|
||||
--> $DIR/params-via-stack.rs:26:5
|
||||
error[E0798]: arguments for `"C-cmse-nonsecure-call"` function too large to pass via registers
|
||||
--> $DIR/params-via-stack.rs:19:43
|
||||
|
|
||||
LL | f3: extern "C-cmse-nonsecure-call" fn(u32, u64, u32) -> u32,
|
||||
| -- this function uses the `C-cmse-nonsecure-call` ABI
|
||||
...
|
||||
LL | f3(1, 2, 3);
|
||||
| ^^^^^^^^^^^ but its arguments don't fit in the available registers
|
||||
LL | f3: extern "C-cmse-nonsecure-call" fn(u32, u64, u32),
|
||||
| ^^^^^^^^^^^^^ 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 `"C-cmse-nonsecure-call"` ABI must pass all their arguments via the 4 32-bit available argument registers
|
||||
|
||||
error[E0798]: arguments for `C-cmse-nonsecure-call` function too large to pass via registers
|
||||
--> $DIR/params-via-stack.rs:27:5
|
||||
error[E0798]: arguments for `"C-cmse-nonsecure-call"` function too large to pass via registers
|
||||
--> $DIR/params-via-stack.rs:20:43
|
||||
|
|
||||
LL | f4: extern "C-cmse-nonsecure-call" fn(AlignRelevant, u32) -> u32,
|
||||
| -- this function uses the `C-cmse-nonsecure-call` ABI
|
||||
...
|
||||
LL | f4(AlignRelevant(1), 2);
|
||||
| ^^^^^^^^^^^^^^^^^^^^^^^ but its arguments don't fit in the available registers
|
||||
LL | f4: extern "C-cmse-nonsecure-call" fn(AlignRelevant, u32),
|
||||
| ^^^^^^^^^^^^^^^^^^ 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 `"C-cmse-nonsecure-call"` ABI must pass all their arguments via the 4 32-bit available argument registers
|
||||
|
||||
error[E0798]: arguments for `C-cmse-nonsecure-call` function too large to pass via registers
|
||||
--> $DIR/params-via-stack.rs:28:5
|
||||
error[E0798]: arguments for `"C-cmse-nonsecure-call"` function too large to pass via registers
|
||||
--> $DIR/params-via-stack.rs:21:43
|
||||
|
|
||||
LL | f5: extern "C-cmse-nonsecure-call" fn([u32; 5]) -> u32,
|
||||
| -- this function uses the `C-cmse-nonsecure-call` ABI
|
||||
...
|
||||
LL | f5([0xAA; 5]);
|
||||
| ^^^^^^^^^^^^^ but its arguments don't fit in the available registers
|
||||
LL | f5: extern "C-cmse-nonsecure-call" fn([u32; 5]),
|
||||
| ^^^^^^^^ 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 `"C-cmse-nonsecure-call"` ABI must pass all their arguments via the 4 32-bit available argument registers
|
||||
|
||||
error: aborting due to 5 previous errors
|
||||
|
||||
|
||||
@ -1,7 +1,6 @@
|
||||
//@ build-fail
|
||||
//@ compile-flags: --target thumbv8m.main-none-eabi --crate-type lib
|
||||
//@ needs-llvm-components: arm
|
||||
#![feature(abi_c_cmse_nonsecure_call, no_core, lang_items, intrinsics)]
|
||||
#![feature(abi_c_cmse_nonsecure_call, no_core, lang_items)]
|
||||
#![no_core]
|
||||
#[lang = "sized"]
|
||||
pub trait Sized {}
|
||||
@ -23,21 +22,18 @@ pub struct ReprCAlign16(u16);
|
||||
|
||||
#[no_mangle]
|
||||
pub fn test(
|
||||
f1: extern "C-cmse-nonsecure-call" fn() -> ReprCU64,
|
||||
f2: extern "C-cmse-nonsecure-call" fn() -> ReprCBytes,
|
||||
f3: extern "C-cmse-nonsecure-call" fn() -> U64Compound,
|
||||
f4: extern "C-cmse-nonsecure-call" fn() -> ReprCAlign16,
|
||||
f5: extern "C-cmse-nonsecure-call" fn() -> [u8; 5],
|
||||
f6: extern "C-cmse-nonsecure-call" fn() -> u128, //~ WARNING [improper_ctypes_definitions]
|
||||
f7: extern "C-cmse-nonsecure-call" fn() -> i128, //~ WARNING [improper_ctypes_definitions]
|
||||
f1: extern "C-cmse-nonsecure-call" fn() -> ReprCU64, //~ ERROR [E0798]
|
||||
f2: extern "C-cmse-nonsecure-call" fn() -> ReprCBytes, //~ ERROR [E0798]
|
||||
f3: extern "C-cmse-nonsecure-call" fn() -> U64Compound, //~ ERROR [E0798]
|
||||
f4: extern "C-cmse-nonsecure-call" fn() -> ReprCAlign16, //~ ERROR [E0798]
|
||||
f5: extern "C-cmse-nonsecure-call" fn() -> [u8; 5], //~ ERROR [E0798]
|
||||
) {
|
||||
f1(); //~ ERROR [E0798]
|
||||
f2(); //~ ERROR [E0798]
|
||||
f3(); //~ ERROR [E0798]
|
||||
f4(); //~ ERROR [E0798]
|
||||
f5(); //~ ERROR [E0798]
|
||||
f6(); //~ ERROR [E0798]
|
||||
f7(); //~ ERROR [E0798]
|
||||
}
|
||||
|
||||
#[allow(improper_ctypes_definitions)]
|
||||
struct Test {
|
||||
u128: extern "C-cmse-nonsecure-call" fn() -> u128, //~ ERROR [E0798]
|
||||
i128: extern "C-cmse-nonsecure-call" fn() -> i128, //~ ERROR [E0798]
|
||||
}
|
||||
|
||||
#[repr(C)]
|
||||
@ -52,9 +48,7 @@ pub union ReprRustUnionU64 {
|
||||
|
||||
#[no_mangle]
|
||||
pub fn test_union(
|
||||
f1: extern "C-cmse-nonsecure-call" fn() -> ReprRustUnionU64, //~ WARNING [improper_ctypes_definitions]
|
||||
f2: extern "C-cmse-nonsecure-call" fn() -> ReprCUnionU64,
|
||||
f1: extern "C-cmse-nonsecure-call" fn() -> ReprRustUnionU64, //~ ERROR [E0798]
|
||||
f2: extern "C-cmse-nonsecure-call" fn() -> ReprCUnionU64, //~ ERROR [E0798]
|
||||
) {
|
||||
f1(); //~ ERROR [E0798]
|
||||
f2(); //~ ERROR [E0798]
|
||||
}
|
||||
|
||||
@ -1,133 +1,75 @@
|
||||
warning: `extern` fn uses type `u128`, which is not FFI-safe
|
||||
--> $DIR/return-via-stack.rs:31:9
|
||||
error[E0798]: return value of `"C-cmse-nonsecure-call"` function too large to pass via registers
|
||||
--> $DIR/return-via-stack.rs:35:50
|
||||
|
|
||||
LL | f6: extern "C-cmse-nonsecure-call" fn() -> u128,
|
||||
| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ not FFI-safe
|
||||
LL | u128: extern "C-cmse-nonsecure-call" fn() -> u128,
|
||||
| ^^^^ this type doesn't fit in the available registers
|
||||
|
|
||||
= note: 128-bit integers don't currently have a known stable ABI
|
||||
= note: `#[warn(improper_ctypes_definitions)]` on by default
|
||||
= note: functions with the `"C-cmse-nonsecure-call"` ABI must pass their result via the available return registers
|
||||
|
||||
warning: `extern` fn uses type `i128`, which is not FFI-safe
|
||||
--> $DIR/return-via-stack.rs:32:9
|
||||
error[E0798]: return value of `"C-cmse-nonsecure-call"` function too large to pass via registers
|
||||
--> $DIR/return-via-stack.rs:36:50
|
||||
|
|
||||
LL | f7: extern "C-cmse-nonsecure-call" fn() -> i128,
|
||||
| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ not FFI-safe
|
||||
LL | i128: extern "C-cmse-nonsecure-call" fn() -> i128,
|
||||
| ^^^^ this type doesn't fit in the available registers
|
||||
|
|
||||
= note: 128-bit integers don't currently have a known stable ABI
|
||||
= note: functions with the `"C-cmse-nonsecure-call"` ABI must pass their result via the available return registers
|
||||
|
||||
warning: `extern` fn uses type `ReprRustUnionU64`, which is not FFI-safe
|
||||
--> $DIR/return-via-stack.rs:55:9
|
||||
|
|
||||
LL | f1: extern "C-cmse-nonsecure-call" fn() -> ReprRustUnionU64,
|
||||
| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ not FFI-safe
|
||||
|
|
||||
= help: consider adding a `#[repr(C)]` or `#[repr(transparent)]` attribute to this union
|
||||
= note: this union has unspecified layout
|
||||
note: the type is defined here
|
||||
--> $DIR/return-via-stack.rs:49:1
|
||||
|
|
||||
LL | pub union ReprRustUnionU64 {
|
||||
| ^^^^^^^^^^^^^^^^^^^^^^^^^^
|
||||
|
||||
error[E0798]: return value of `C-cmse-nonsecure-call` function too large to pass via registers
|
||||
--> $DIR/return-via-stack.rs:34:5
|
||||
error[E0798]: return value of `"C-cmse-nonsecure-call"` function too large to pass via registers
|
||||
--> $DIR/return-via-stack.rs:25:48
|
||||
|
|
||||
LL | f1: extern "C-cmse-nonsecure-call" fn() -> ReprCU64,
|
||||
| -- this function uses the `C-cmse-nonsecure-call` ABI
|
||||
...
|
||||
LL | f1();
|
||||
| ^^^^ but its return value doesn't fit in the available registers
|
||||
| ^^^^^^^^ this type doesn't fit in the available registers
|
||||
|
|
||||
= note: functions with the `C-cmse-nonsecure-call` ABI must pass their result via the available return registers
|
||||
= note: functions with the `"C-cmse-nonsecure-call"` ABI must pass their result via the available return registers
|
||||
|
||||
error[E0798]: return value of `C-cmse-nonsecure-call` function too large to pass via registers
|
||||
--> $DIR/return-via-stack.rs:35:5
|
||||
error[E0798]: return value of `"C-cmse-nonsecure-call"` function too large to pass via registers
|
||||
--> $DIR/return-via-stack.rs:26:48
|
||||
|
|
||||
LL | f2: extern "C-cmse-nonsecure-call" fn() -> ReprCBytes,
|
||||
| -- this function uses the `C-cmse-nonsecure-call` ABI
|
||||
...
|
||||
LL | f2();
|
||||
| ^^^^ but its return value doesn't fit in the available registers
|
||||
| ^^^^^^^^^^ this type doesn't fit in the available registers
|
||||
|
|
||||
= note: functions with the `C-cmse-nonsecure-call` ABI must pass their result via the available return registers
|
||||
= note: functions with the `"C-cmse-nonsecure-call"` ABI must pass their result via the available return registers
|
||||
|
||||
error[E0798]: return value of `C-cmse-nonsecure-call` function too large to pass via registers
|
||||
--> $DIR/return-via-stack.rs:36:5
|
||||
error[E0798]: return value of `"C-cmse-nonsecure-call"` function too large to pass via registers
|
||||
--> $DIR/return-via-stack.rs:27:48
|
||||
|
|
||||
LL | f3: extern "C-cmse-nonsecure-call" fn() -> U64Compound,
|
||||
| -- this function uses the `C-cmse-nonsecure-call` ABI
|
||||
...
|
||||
LL | f3();
|
||||
| ^^^^ but its return value doesn't fit in the available registers
|
||||
| ^^^^^^^^^^^ this type doesn't fit in the available registers
|
||||
|
|
||||
= note: functions with the `C-cmse-nonsecure-call` ABI must pass their result via the available return registers
|
||||
= note: functions with the `"C-cmse-nonsecure-call"` ABI must pass their result via the available return registers
|
||||
|
||||
error[E0798]: return value of `C-cmse-nonsecure-call` function too large to pass via registers
|
||||
--> $DIR/return-via-stack.rs:37:5
|
||||
error[E0798]: return value of `"C-cmse-nonsecure-call"` function too large to pass via registers
|
||||
--> $DIR/return-via-stack.rs:28:48
|
||||
|
|
||||
LL | f4: extern "C-cmse-nonsecure-call" fn() -> ReprCAlign16,
|
||||
| -- this function uses the `C-cmse-nonsecure-call` ABI
|
||||
...
|
||||
LL | f4();
|
||||
| ^^^^ but its return value doesn't fit in the available registers
|
||||
| ^^^^^^^^^^^^ this type doesn't fit in the available registers
|
||||
|
|
||||
= note: functions with the `C-cmse-nonsecure-call` ABI must pass their result via the available return registers
|
||||
= note: functions with the `"C-cmse-nonsecure-call"` ABI must pass their result via the available return registers
|
||||
|
||||
error[E0798]: return value of `C-cmse-nonsecure-call` function too large to pass via registers
|
||||
--> $DIR/return-via-stack.rs:38:5
|
||||
error[E0798]: return value of `"C-cmse-nonsecure-call"` function too large to pass via registers
|
||||
--> $DIR/return-via-stack.rs:29:48
|
||||
|
|
||||
LL | f5: extern "C-cmse-nonsecure-call" fn() -> [u8; 5],
|
||||
| -- this function uses the `C-cmse-nonsecure-call` ABI
|
||||
...
|
||||
LL | f5();
|
||||
| ^^^^ but its return value doesn't fit in the available registers
|
||||
| ^^^^^^^ this type doesn't fit in the available registers
|
||||
|
|
||||
= note: functions with the `C-cmse-nonsecure-call` ABI must pass their result via the available return registers
|
||||
= note: functions with the `"C-cmse-nonsecure-call"` ABI must pass their result via the available return registers
|
||||
|
||||
error[E0798]: return value of `C-cmse-nonsecure-call` function too large to pass via registers
|
||||
--> $DIR/return-via-stack.rs:39:5
|
||||
|
|
||||
LL | f6: extern "C-cmse-nonsecure-call" fn() -> u128,
|
||||
| -- this function uses the `C-cmse-nonsecure-call` ABI
|
||||
...
|
||||
LL | f6();
|
||||
| ^^^^ but its return value doesn't fit in the available registers
|
||||
|
|
||||
= note: functions with the `C-cmse-nonsecure-call` ABI must pass their result via the available return registers
|
||||
|
||||
error[E0798]: return value of `C-cmse-nonsecure-call` function too large to pass via registers
|
||||
--> $DIR/return-via-stack.rs:40:5
|
||||
|
|
||||
LL | f7: extern "C-cmse-nonsecure-call" fn() -> i128,
|
||||
| -- this function uses the `C-cmse-nonsecure-call` ABI
|
||||
...
|
||||
LL | f7();
|
||||
| ^^^^ but its return value doesn't fit in the available registers
|
||||
|
|
||||
= note: functions with the `C-cmse-nonsecure-call` ABI must pass their result via the available return registers
|
||||
|
||||
error[E0798]: return value of `C-cmse-nonsecure-call` function too large to pass via registers
|
||||
--> $DIR/return-via-stack.rs:58:5
|
||||
error[E0798]: return value of `"C-cmse-nonsecure-call"` function too large to pass via registers
|
||||
--> $DIR/return-via-stack.rs:51:48
|
||||
|
|
||||
LL | f1: extern "C-cmse-nonsecure-call" fn() -> ReprRustUnionU64,
|
||||
| -- this function uses the `C-cmse-nonsecure-call` ABI
|
||||
...
|
||||
LL | f1();
|
||||
| ^^^^ but its return value doesn't fit in the available registers
|
||||
| ^^^^^^^^^^^^^^^^ this type doesn't fit in the available registers
|
||||
|
|
||||
= note: functions with the `C-cmse-nonsecure-call` ABI must pass their result via the available return registers
|
||||
= note: functions with the `"C-cmse-nonsecure-call"` ABI must pass their result via the available return registers
|
||||
|
||||
error[E0798]: return value of `C-cmse-nonsecure-call` function too large to pass via registers
|
||||
--> $DIR/return-via-stack.rs:59:5
|
||||
error[E0798]: return value of `"C-cmse-nonsecure-call"` function too large to pass via registers
|
||||
--> $DIR/return-via-stack.rs:52:48
|
||||
|
|
||||
LL | f2: extern "C-cmse-nonsecure-call" fn() -> ReprCUnionU64,
|
||||
| -- this function uses the `C-cmse-nonsecure-call` ABI
|
||||
...
|
||||
LL | f2();
|
||||
| ^^^^ but its return value doesn't fit in the available registers
|
||||
| ^^^^^^^^^^^^^ this type doesn't fit in the available registers
|
||||
|
|
||||
= note: functions with the `C-cmse-nonsecure-call` ABI must pass their result via the available return registers
|
||||
= note: functions with the `"C-cmse-nonsecure-call"` ABI must pass their result via the available return registers
|
||||
|
||||
error: aborting due to 9 previous errors; 3 warnings emitted
|
||||
error: aborting due to 9 previous errors
|
||||
|
||||
For more information about this error, try `rustc --explain E0798`.
|
||||
|
||||
@ -10,10 +10,10 @@ pub trait Copy {}
|
||||
impl Copy for u32 {}
|
||||
|
||||
#[repr(transparent)]
|
||||
pub struct ReprTransparentStructU64 {
|
||||
pub struct ReprTransparentStruct<T> {
|
||||
_marker1: (),
|
||||
_marker2: (),
|
||||
field: u64,
|
||||
field: T,
|
||||
_marker3: (),
|
||||
}
|
||||
|
||||
@ -33,19 +33,9 @@ pub fn params(
|
||||
f3: extern "C-cmse-nonsecure-call" fn(u64, u64),
|
||||
f4: extern "C-cmse-nonsecure-call" fn(u128),
|
||||
f5: extern "C-cmse-nonsecure-call" fn(f64, f32, f32),
|
||||
f6: extern "C-cmse-nonsecure-call" fn(ReprTransparentStructU64, U32Compound),
|
||||
f6: extern "C-cmse-nonsecure-call" fn(ReprTransparentStruct<u64>, U32Compound),
|
||||
f7: extern "C-cmse-nonsecure-call" fn([u32; 4]),
|
||||
) {
|
||||
f1();
|
||||
f2(1, 2, 3, 4);
|
||||
f3(1, 2);
|
||||
f4(1);
|
||||
f5(1.0, 2.0, 3.0);
|
||||
f6(
|
||||
ReprTransparentStructU64 { _marker1: (), _marker2: (), field: 1, _marker3: () },
|
||||
U32Compound(2, 3),
|
||||
);
|
||||
f7([0xDEADBEEF; 4]);
|
||||
}
|
||||
|
||||
#[no_mangle]
|
||||
@ -55,16 +45,9 @@ pub fn returns(
|
||||
f3: extern "C-cmse-nonsecure-call" fn() -> i64,
|
||||
f4: extern "C-cmse-nonsecure-call" fn() -> f64,
|
||||
f5: extern "C-cmse-nonsecure-call" fn() -> [u8; 4],
|
||||
f6: extern "C-cmse-nonsecure-call" fn() -> ReprTransparentStructU64,
|
||||
f7: extern "C-cmse-nonsecure-call" fn() -> ReprTransparentEnumU64,
|
||||
f8: extern "C-cmse-nonsecure-call" fn() -> U32Compound,
|
||||
f6: extern "C-cmse-nonsecure-call" fn() -> ReprTransparentStruct<u64>,
|
||||
f7: extern "C-cmse-nonsecure-call" fn() -> ReprTransparentStruct<ReprTransparentStruct<u64>>,
|
||||
f8: extern "C-cmse-nonsecure-call" fn() -> ReprTransparentEnumU64,
|
||||
f9: extern "C-cmse-nonsecure-call" fn() -> U32Compound,
|
||||
) {
|
||||
f1();
|
||||
f2();
|
||||
f3();
|
||||
f4();
|
||||
f5();
|
||||
f6();
|
||||
f7();
|
||||
f8();
|
||||
}
|
||||
|
||||
Loading…
Reference in New Issue
Block a user