xref: /freebsd/contrib/llvm-project/llvm/lib/ExecutionEngine/JITLink/aarch64.cpp (revision a90b9d0159070121c221b966469c3e36d912bf82)
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
82