1//===-- SparcMCExpr.cpp - Sparc specific MC expression classes --------===//
2//
3//                     The LLVM Compiler Infrastructure
4//
5// This file is distributed under the University of Illinois Open Source
6// License. See LICENSE.TXT for details.
7//
8//===----------------------------------------------------------------------===//
9//
10// This file contains the implementation of the assembly expression modifiers
11// accepted by the Sparc architecture (e.g. "%hi", "%lo", ...).
12//
13//===----------------------------------------------------------------------===//
14
15#include "SparcMCExpr.h"
16#include "llvm/MC/MCAssembler.h"
17#include "llvm/MC/MCContext.h"
18#include "llvm/MC/MCObjectStreamer.h"
19#include "llvm/MC/MCSymbolELF.h"
20#include "llvm/Object/ELF.h"
21
22
23using namespace llvm;
24
25#define DEBUG_TYPE "sparcmcexpr"
26
27const SparcMCExpr*
28SparcMCExpr::create(VariantKind Kind, const MCExpr *Expr,
29                      MCContext &Ctx) {
30    return new (Ctx) SparcMCExpr(Kind, Expr);
31}
32
33void SparcMCExpr::printImpl(raw_ostream &OS, const MCAsmInfo *MAI) const {
34
35  bool closeParen = printVariantKind(OS, Kind);
36
37  const MCExpr *Expr = getSubExpr();
38  Expr->print(OS, MAI);
39
40  if (closeParen)
41    OS << ')';
42}
43
44bool SparcMCExpr::printVariantKind(raw_ostream &OS, VariantKind Kind)
45{
46  bool closeParen = true;
47  switch (Kind) {
48  case VK_Sparc_None:     closeParen = false; break;
49  case VK_Sparc_LO:       OS << "%lo(";  break;
50  case VK_Sparc_HI:       OS << "%hi(";  break;
51  case VK_Sparc_H44:      OS << "%h44("; break;
52  case VK_Sparc_M44:      OS << "%m44("; break;
53  case VK_Sparc_L44:      OS << "%l44("; break;
54  case VK_Sparc_HH:       OS << "%hh(";  break;
55  case VK_Sparc_HM:       OS << "%hm(";  break;
56    // FIXME: use %pc22/%pc10, if system assembler supports them.
57  case VK_Sparc_PC22:     OS << "%hi("; break;
58  case VK_Sparc_PC10:     OS << "%lo("; break;
59    // FIXME: use %got22/%got10, if system assembler supports them.
60  case VK_Sparc_GOT22:    OS << "%hi("; break;
61  case VK_Sparc_GOT10:    OS << "%lo("; break;
62  case VK_Sparc_WPLT30:   closeParen = false; break;
63  case VK_Sparc_R_DISP32: OS << "%r_disp32("; break;
64  case VK_Sparc_TLS_GD_HI22:   OS << "%tgd_hi22(";   break;
65  case VK_Sparc_TLS_GD_LO10:   OS << "%tgd_lo10(";   break;
66  case VK_Sparc_TLS_GD_ADD:    OS << "%tgd_add(";    break;
67  case VK_Sparc_TLS_GD_CALL:   OS << "%tgd_call(";   break;
68  case VK_Sparc_TLS_LDM_HI22:  OS << "%tldm_hi22(";  break;
69  case VK_Sparc_TLS_LDM_LO10:  OS << "%tldm_lo10(";  break;
70  case VK_Sparc_TLS_LDM_ADD:   OS << "%tldm_add(";   break;
71  case VK_Sparc_TLS_LDM_CALL:  OS << "%tldm_call(";  break;
72  case VK_Sparc_TLS_LDO_HIX22: OS << "%tldo_hix22("; break;
73  case VK_Sparc_TLS_LDO_LOX10: OS << "%tldo_lox10("; break;
74  case VK_Sparc_TLS_LDO_ADD:   OS << "%tldo_add(";   break;
75  case VK_Sparc_TLS_IE_HI22:   OS << "%tie_hi22(";   break;
76  case VK_Sparc_TLS_IE_LO10:   OS << "%tie_lo10(";   break;
77  case VK_Sparc_TLS_IE_LD:     OS << "%tie_ld(";     break;
78  case VK_Sparc_TLS_IE_LDX:    OS << "%tie_ldx(";    break;
79  case VK_Sparc_TLS_IE_ADD:    OS << "%tie_add(";    break;
80  case VK_Sparc_TLS_LE_HIX22:  OS << "%tle_hix22(";  break;
81  case VK_Sparc_TLS_LE_LOX10:  OS << "%tle_lox10(";  break;
82  }
83  return closeParen;
84}
85
86SparcMCExpr::VariantKind SparcMCExpr::parseVariantKind(StringRef name)
87{
88  return StringSwitch<SparcMCExpr::VariantKind>(name)
89    .Case("lo",  VK_Sparc_LO)
90    .Case("hi",  VK_Sparc_HI)
91    .Case("h44", VK_Sparc_H44)
92    .Case("m44", VK_Sparc_M44)
93    .Case("l44", VK_Sparc_L44)
94    .Case("hh",  VK_Sparc_HH)
95    .Case("hm",  VK_Sparc_HM)
96    .Case("pc22",  VK_Sparc_PC22)
97    .Case("pc10",  VK_Sparc_PC10)
98    .Case("got22", VK_Sparc_GOT22)
99    .Case("got10", VK_Sparc_GOT10)
100    .Case("r_disp32",   VK_Sparc_R_DISP32)
101    .Case("tgd_hi22",   VK_Sparc_TLS_GD_HI22)
102    .Case("tgd_lo10",   VK_Sparc_TLS_GD_LO10)
103    .Case("tgd_add",    VK_Sparc_TLS_GD_ADD)
104    .Case("tgd_call",   VK_Sparc_TLS_GD_CALL)
105    .Case("tldm_hi22",  VK_Sparc_TLS_LDM_HI22)
106    .Case("tldm_lo10",  VK_Sparc_TLS_LDM_LO10)
107    .Case("tldm_add",   VK_Sparc_TLS_LDM_ADD)
108    .Case("tldm_call",  VK_Sparc_TLS_LDM_CALL)
109    .Case("tldo_hix22", VK_Sparc_TLS_LDO_HIX22)
110    .Case("tldo_lox10", VK_Sparc_TLS_LDO_LOX10)
111    .Case("tldo_add",   VK_Sparc_TLS_LDO_ADD)
112    .Case("tie_hi22",   VK_Sparc_TLS_IE_HI22)
113    .Case("tie_lo10",   VK_Sparc_TLS_IE_LO10)
114    .Case("tie_ld",     VK_Sparc_TLS_IE_LD)
115    .Case("tie_ldx",    VK_Sparc_TLS_IE_LDX)
116    .Case("tie_add",    VK_Sparc_TLS_IE_ADD)
117    .Case("tle_hix22",  VK_Sparc_TLS_LE_HIX22)
118    .Case("tle_lox10",  VK_Sparc_TLS_LE_LOX10)
119    .Default(VK_Sparc_None);
120}
121
122Sparc::Fixups SparcMCExpr::getFixupKind(SparcMCExpr::VariantKind Kind) {
123  switch (Kind) {
124  default: llvm_unreachable("Unhandled SparcMCExpr::VariantKind");
125  case VK_Sparc_LO:       return Sparc::fixup_sparc_lo10;
126  case VK_Sparc_HI:       return Sparc::fixup_sparc_hi22;
127  case VK_Sparc_H44:      return Sparc::fixup_sparc_h44;
128  case VK_Sparc_M44:      return Sparc::fixup_sparc_m44;
129  case VK_Sparc_L44:      return Sparc::fixup_sparc_l44;
130  case VK_Sparc_HH:       return Sparc::fixup_sparc_hh;
131  case VK_Sparc_HM:       return Sparc::fixup_sparc_hm;
132  case VK_Sparc_PC22:     return Sparc::fixup_sparc_pc22;
133  case VK_Sparc_PC10:     return Sparc::fixup_sparc_pc10;
134  case VK_Sparc_GOT22:    return Sparc::fixup_sparc_got22;
135  case VK_Sparc_GOT10:    return Sparc::fixup_sparc_got10;
136  case VK_Sparc_WPLT30:   return Sparc::fixup_sparc_wplt30;
137  case VK_Sparc_TLS_GD_HI22:   return Sparc::fixup_sparc_tls_gd_hi22;
138  case VK_Sparc_TLS_GD_LO10:   return Sparc::fixup_sparc_tls_gd_lo10;
139  case VK_Sparc_TLS_GD_ADD:    return Sparc::fixup_sparc_tls_gd_add;
140  case VK_Sparc_TLS_GD_CALL:   return Sparc::fixup_sparc_tls_gd_call;
141  case VK_Sparc_TLS_LDM_HI22:  return Sparc::fixup_sparc_tls_ldm_hi22;
142  case VK_Sparc_TLS_LDM_LO10:  return Sparc::fixup_sparc_tls_ldm_lo10;
143  case VK_Sparc_TLS_LDM_ADD:   return Sparc::fixup_sparc_tls_ldm_add;
144  case VK_Sparc_TLS_LDM_CALL:  return Sparc::fixup_sparc_tls_ldm_call;
145  case VK_Sparc_TLS_LDO_HIX22: return Sparc::fixup_sparc_tls_ldo_hix22;
146  case VK_Sparc_TLS_LDO_LOX10: return Sparc::fixup_sparc_tls_ldo_lox10;
147  case VK_Sparc_TLS_LDO_ADD:   return Sparc::fixup_sparc_tls_ldo_add;
148  case VK_Sparc_TLS_IE_HI22:   return Sparc::fixup_sparc_tls_ie_hi22;
149  case VK_Sparc_TLS_IE_LO10:   return Sparc::fixup_sparc_tls_ie_lo10;
150  case VK_Sparc_TLS_IE_LD:     return Sparc::fixup_sparc_tls_ie_ld;
151  case VK_Sparc_TLS_IE_LDX:    return Sparc::fixup_sparc_tls_ie_ldx;
152  case VK_Sparc_TLS_IE_ADD:    return Sparc::fixup_sparc_tls_ie_add;
153  case VK_Sparc_TLS_LE_HIX22:  return Sparc::fixup_sparc_tls_le_hix22;
154  case VK_Sparc_TLS_LE_LOX10:  return Sparc::fixup_sparc_tls_le_lox10;
155  }
156}
157
158bool
159SparcMCExpr::evaluateAsRelocatableImpl(MCValue &Res,
160                                       const MCAsmLayout *Layout,
161                                       const MCFixup *Fixup) const {
162  return getSubExpr()->evaluateAsRelocatable(Res, Layout, Fixup);
163}
164
165static void fixELFSymbolsInTLSFixupsImpl(const MCExpr *Expr, MCAssembler &Asm) {
166  switch (Expr->getKind()) {
167  case MCExpr::Target:
168    llvm_unreachable("Can't handle nested target expr!");
169    break;
170
171  case MCExpr::Constant:
172    break;
173
174  case MCExpr::Binary: {
175    const MCBinaryExpr *BE = cast<MCBinaryExpr>(Expr);
176    fixELFSymbolsInTLSFixupsImpl(BE->getLHS(), Asm);
177    fixELFSymbolsInTLSFixupsImpl(BE->getRHS(), Asm);
178    break;
179  }
180
181  case MCExpr::SymbolRef: {
182    const MCSymbolRefExpr &SymRef = *cast<MCSymbolRefExpr>(Expr);
183    cast<MCSymbolELF>(SymRef.getSymbol()).setType(ELF::STT_TLS);
184    break;
185  }
186
187  case MCExpr::Unary:
188    fixELFSymbolsInTLSFixupsImpl(cast<MCUnaryExpr>(Expr)->getSubExpr(), Asm);
189    break;
190  }
191
192}
193
194void SparcMCExpr::fixELFSymbolsInTLSFixups(MCAssembler &Asm) const {
195  switch(getKind()) {
196  default: return;
197  case VK_Sparc_TLS_GD_HI22:
198  case VK_Sparc_TLS_GD_LO10:
199  case VK_Sparc_TLS_GD_ADD:
200  case VK_Sparc_TLS_GD_CALL:
201  case VK_Sparc_TLS_LDM_HI22:
202  case VK_Sparc_TLS_LDM_LO10:
203  case VK_Sparc_TLS_LDM_ADD:
204  case VK_Sparc_TLS_LDM_CALL:
205  case VK_Sparc_TLS_LDO_HIX22:
206  case VK_Sparc_TLS_LDO_LOX10:
207  case VK_Sparc_TLS_LDO_ADD:
208  case VK_Sparc_TLS_IE_HI22:
209  case VK_Sparc_TLS_IE_LO10:
210  case VK_Sparc_TLS_IE_LD:
211  case VK_Sparc_TLS_IE_LDX:
212  case VK_Sparc_TLS_IE_ADD:
213  case VK_Sparc_TLS_LE_HIX22:
214  case VK_Sparc_TLS_LE_LOX10: break;
215  }
216  fixELFSymbolsInTLSFixupsImpl(getSubExpr(), Asm);
217}
218
219void SparcMCExpr::visitUsedExpr(MCStreamer &Streamer) const {
220  Streamer.visitUsedExpr(*getSubExpr());
221}
222