compiler/rustc_codegen_ssa/src/traits/asm.rs

   1 use super::BackendTypes;
   2 use crate::mir::operand::OperandRef;
   3 use crate::mir::place::PlaceRef;
   4 use rustc_ast::{InlineAsmOptions, InlineAsmTemplatePiece};
   5 use rustc_hir::def_id::DefId;
   6 use rustc_hir::LlvmInlineAsmInner;
   7 use rustc_middle::ty::Instance;
   8 use rustc_span::Span;
   9 use rustc_target::asm::InlineAsmRegOrRegClass;
  10
  11 #[derive(Debug)]
  12 pub enum InlineAsmOperandRef<'tcx, B: BackendTypes + ?Sized> {
  13     In {
  14         reg: InlineAsmRegOrRegClass,
  15         value: OperandRef<'tcx, B::Value>,
  16     },
  17     Out {
  18         reg: InlineAsmRegOrRegClass,
  19         late: bool,
  20         place: Option<PlaceRef<'tcx, B::Value>>,
  21     },
  22     InOut {
  23         reg: InlineAsmRegOrRegClass,
  24         late: bool,
  25         in_value: OperandRef<'tcx, B::Value>,
  26         out_place: Option<PlaceRef<'tcx, B::Value>>,
  27     },
  28     Const {
  29         string: String,
  30     },
  31     SymFn {
  32         instance: Instance<'tcx>,
  33     },
  34     SymStatic {
  35         def_id: DefId,
  36     },
  37 }
  38
  39 #[derive(Debug)]
  40 pub enum GlobalAsmOperandRef {
  41     Const { string: String },
  42 }
  43
  44 pub trait AsmBuilderMethods<'tcx>: BackendTypes {
  45     /// Take an inline assembly expression and splat it out via LLVM
  46     fn codegen_llvm_inline_asm(
  47         &mut self,
  48         ia: &LlvmInlineAsmInner,
  49         outputs: Vec<PlaceRef<'tcx, Self::Value>>,
  50         inputs: Vec<Self::Value>,
  51         span: Span,
  52     ) -> bool;
  53
  54     /// Take an inline assembly expression and splat it out via LLVM
  55     fn codegen_inline_asm(
  56         &mut self,
  57         template: &[InlineAsmTemplatePiece],
  58         operands: &[InlineAsmOperandRef<'tcx, Self>],
  59         options: InlineAsmOptions,
  60         line_spans: &[Span],
  61     );
  62 }
  63
  64 pub trait AsmMethods {
  65     fn codegen_global_asm(
  66         &self,
  67         template: &[InlineAsmTemplatePiece],
  68         operands: &[GlobalAsmOperandRef],
  69         options: InlineAsmOptions,
  70         line_spans: &[Span],
  71     );
  72 }