llvm/lib/ExecutionEngine/JITLink/aarch64.cpp

   1 //===---- aarch64.cpp - Generic JITLink aarch64 edge kinds, utilities -----===//
   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 // Generic utilities for graphs representing aarch64 objects.
  10 //
  11 //===----------------------------------------------------------------------===//
  12
  13 #include "llvm/ExecutionEngine/JITLink/aarch64.h"
  14
  15 #define DEBUG_TYPE "jitlink"
  16
  17 namespace llvm {
  18 namespace jitlink {
  19 namespace aarch64 {
  20
  21 const char NullPointerContent[8] = {0x00, 0x00, 0x00, 0x00,
  22                                     0x00, 0x00, 0x00, 0x00};
  23
  24 const char PointerJumpStubContent[12] = {
  25     0x10, 0x00, 0x00, (char)0x90u, // ADRP x16, <imm>@page21
  26     0x10, 0x02, 0x40, (char)0xf9u, // LDR x16, [x16, <imm>@pageoff12]
  27     0x00, 0x02, 0x1f, (char)0xd6u  // BR  x16
  28 };
  29
  30 const char *getEdgeKindName(Edge::Kind R) {
  31   switch (R) {
  32   case Pointer64:
  33     return "Pointer64";
  34   case Pointer32:
  35     return "Pointer32";
  36   case Delta64:
  37     return "Delta64";
  38   case Delta32:
  39     return "Delta32";
  40   case NegDelta64:
  41     return "NegDelta64";
  42   case NegDelta32:
  43     return "NegDelta32";
  44   case Branch26PCRel:
  45     return "Branch26PCRel";
  46   case MoveWide16:
  47     return "MoveWide16";
  48   case LDRLiteral19:
  49     return "LDRLiteral19";
  50   case TestAndBranch14PCRel:
  51     return "TestAndBranch14PCRel";
  52   case CondBranch19PCRel:
  53     return "CondBranch19PCRel";
  54   case ADRLiteral21:
  55     return "ADRLiteral21";
  56   case Page21:
  57     return "Page21";
  58   case PageOffset12:
  59     return "PageOffset12";
  60   case RequestGOTAndTransformToPage21:
  61     return "RequestGOTAndTransformToPage21";
  62   case RequestGOTAndTransformToPageOffset12:
  63     return "RequestGOTAndTransformToPageOffset12";
  64   case RequestGOTAndTransformToDelta32:
  65     return "RequestGOTAndTransformToDelta32";
  66   case RequestTLVPAndTransformToPage21:
  67     return "RequestTLVPAndTransformToPage21";
  68   case RequestTLVPAndTransformToPageOffset12:
  69     return "RequestTLVPAndTransformToPageOffset12";
  70   case RequestTLSDescEntryAndTransformToPage21:
  71     return "RequestTLSDescEntryAndTransformToPage21";
  72   case RequestTLSDescEntryAndTransformToPageOffset12:
  73     return "RequestTLSDescEntryAndTransformToPageOffset12";
  74   default:
  75     return getGenericEdgeKindName(static_cast<Edge::Kind>(R));
  76   }
  77 }
  78
  79 } // namespace aarch64
  80 } // namespace jitlink
  81 } // namespace llvm