sfja/h4-projekt-gruppe-0-sm
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compiler: use cqo, short ty

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sfja 2025-03-28 00:05:59 +01:00
parent 43740eb9ee
commit ba8da1fccb
3 changed files with 29 additions and 12 deletions
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8
sbc/asm_gen.ts
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@ -33,16 +33,16 @@ export class AsmGen {
}
this.writeln(`sbc__div:`);
this.writeIns(`mov rdx, 0`);
this.writeIns(`mov rax, [rsp+16]`);
this.writeIns(`mov rdi, [rsp+8]`);
this.writeIns(`div rdi`);
this.writeIns(`cqo`);
this.writeIns(`idiv rdi`);
this.writeIns(`ret`);
this.writeln(`sbc__mod:`);
this.writeIns(`mov rdx, 0`);
this.writeIns(`mov rax, [rsp+16]`);
this.writeIns(`mov rdi, [rsp+8]`);
this.writeIns(`div rdi`);
this.writeIns(`cqo`);
this.writeIns(`idiv rdi`);
this.writeIns(`mov rax, rdx`);
this.writeIns(`ret`);

4
sbc/mir.ts
View File

@ -111,7 +111,9 @@ export class FnStringifyer {
case "error":
return "<error>";
case "push":
return `push (${tyToString(k.ty)}) ${this.val(k.val)}`;
return `push (${tyToString(k.ty, { short: true })}) ${
this.val(k.val)
}`;
case "pop":
return "pop";
case "load":

29
sbc/ty.ts
View File

@ -9,7 +9,11 @@ export type Ty =
| { tag: "ptr"; ty: Ty }
| { tag: "fn"; stmt: ast.Stmt; params: Ty[]; returnTy: Ty };
export function tyToString(ty: Ty): string {
type TyToStringOpts = {
short?: boolean;
};
export function tyToString(ty: Ty, opts: TyToStringOpts = {}): string {
switch (ty.tag) {
case "error":
return `<error>`;
@ -24,12 +28,23 @@ export function tyToString(ty: Ty): string {
case "ptr":
return `*${tyToString(ty.ty)}`;
case "fn": {
const k = ty.stmt.kind as ast.StmtKind & { tag: "fn" };
const params = ty.params
.map((param, i) => `${k.params[i].ident}: ${tyToString(param)}`)
.join(", ");
const returnTy = tyToString(ty.returnTy);
return `fn ${k.ident}(${params}) -> ${returnTy}`;
if (!opts.short) {
const k = ty.stmt.kind as ast.StmtKind & { tag: "fn" };
const params = ty.params
.map((param, i) =>
`${k.params[i].ident}: ${tyToString(param)}`
)
.join(", ");
const returnTy = tyToString(ty.returnTy);
return `fn ${k.ident}(${params}) -> ${returnTy}`;
} else {
const k = ty.stmt.kind as ast.StmtKind & { tag: "fn" };
const params = ty.params
.map((param) => tyToString(param))
.join(", ");
const returnTy = tyToString(ty.returnTy);
return `fn(${params}) -> ${returnTy}`;
}
}
}
}