1//===-- XCoreInstPrinter.cpp - Convert XCore MCInst to assembly syntax ----===//
2//
3// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
4// See https://llvm.org/LICENSE.txt for license information.
5// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
6//
7//===----------------------------------------------------------------------===//
8//
9// This class prints an XCore MCInst to a .s file.
10//
11//===----------------------------------------------------------------------===//
12
13#include "XCoreInstPrinter.h"
14#include "llvm/ADT/StringRef.h"
15#include "llvm/MC/MCExpr.h"
16#include "llvm/MC/MCInst.h"
17#include "llvm/MC/MCRegister.h"
18#include "llvm/MC/MCSymbol.h"
19#include "llvm/Support/Casting.h"
20#include "llvm/Support/ErrorHandling.h"
21#include "llvm/Support/raw_ostream.h"
22#include <cassert>
23
24using namespace llvm;
25
26#define DEBUG_TYPE "asm-printer"
27
28#include "XCoreGenAsmWriter.inc"
29
30void XCoreInstPrinter::printRegName(raw_ostream &OS, MCRegister Reg) {
31 OS << StringRef(getRegisterName(Reg)).lower();
32}
33
34void XCoreInstPrinter::printInst(const MCInst *MI, uint64_t Address,
35 StringRef Annot, const MCSubtargetInfo &STI,
36 raw_ostream &O) {
37 printInstruction(MI, Address, O);
38 printAnnotation(OS&: O, Annot);
39}
40
41void XCoreInstPrinter::
42printInlineJT(const MCInst *MI, int opNum, raw_ostream &O) {
43 report_fatal_error(reason: "can't handle InlineJT");
44}
45
46void XCoreInstPrinter::
47printInlineJT32(const MCInst *MI, int opNum, raw_ostream &O) {
48 report_fatal_error(reason: "can't handle InlineJT32");
49}
50
51static void printExpr(const MCExpr *Expr, const MCAsmInfo *MAI,
52 raw_ostream &OS) {
53 int Offset = 0;
54 const MCSymbolRefExpr *SRE;
55
56 if (const MCBinaryExpr *BE = dyn_cast<MCBinaryExpr>(Val: Expr)) {
57 SRE = dyn_cast<MCSymbolRefExpr>(Val: BE->getLHS());
58 const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(Val: BE->getRHS());
59 assert(SRE && CE && "Binary expression must be sym+const.");
60 Offset = CE->getValue();
61 } else {
62 SRE = dyn_cast<MCSymbolRefExpr>(Val: Expr);
63 assert(SRE && "Unexpected MCExpr type.");
64 }
65 assert(SRE->getSpecifier() == 0);
66
67 SRE->getSymbol().print(OS, MAI);
68
69 if (Offset) {
70 if (Offset > 0)
71 OS << '+';
72 OS << Offset;
73 }
74}
75
76void XCoreInstPrinter::
77printOperand(const MCInst *MI, unsigned OpNo, raw_ostream &O) {
78 const MCOperand &Op = MI->getOperand(i: OpNo);
79 if (Op.isReg()) {
80 printRegName(OS&: O, Reg: Op.getReg());
81 return;
82 }
83
84 if (Op.isImm()) {
85 O << Op.getImm();
86 return;
87 }
88
89 assert(Op.isExpr() && "unknown operand kind in printOperand");
90 printExpr(Expr: Op.getExpr(), MAI: &MAI, OS&: O);
91}
92