1 //===-- LanaiMCExpr.cpp - Lanai specific MC expression classes ------------===//
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 #include "LanaiMCExpr.h"
10 #include "llvm/MC/MCAssembler.h"
11 #include "llvm/MC/MCContext.h"
12 #include "llvm/MC/MCStreamer.h"
13 using namespace llvm;
14 
15 #define DEBUG_TYPE "lanaimcexpr"
16 
17 const LanaiMCExpr *LanaiMCExpr::create(VariantKind Kind, const MCExpr *Expr,
18                                        MCContext &Ctx) {
19   return new (Ctx) LanaiMCExpr(Kind, Expr);
20 }
21 
22 void LanaiMCExpr::printImpl(raw_ostream &OS, const MCAsmInfo *MAI) const {
23   if (Kind == VK_Lanai_None) {
24     Expr->print(OS, MAI);
25     return;
26   }
27 
28   switch (Kind) {
29   default:
30     llvm_unreachable("Invalid kind!");
31   case VK_Lanai_ABS_HI:
32     OS << "hi";
33     break;
34   case VK_Lanai_ABS_LO:
35     OS << "lo";
36     break;
37   }
38 
39   OS << '(';
40   const MCExpr *Expr = getSubExpr();
41   Expr->print(OS, MAI);
42   OS << ')';
43 }
44 
45 void LanaiMCExpr::visitUsedExpr(MCStreamer &Streamer) const {
46   Streamer.visitUsedExpr(*getSubExpr());
47 }
48 
49 bool LanaiMCExpr::evaluateAsRelocatableImpl(MCValue &Res,
50                                             const MCAsmLayout *Layout,
51                                             const MCFixup *Fixup) const {
52   if (!getSubExpr()->evaluateAsRelocatable(Res, Layout, Fixup))
53     return false;
54 
55   Res =
56       MCValue::get(Res.getSymA(), Res.getSymB(), Res.getConstant(), getKind());
57 
58   return true;
59 }
60