199c400387
This relocation is used in order to address GOT entries using 15 bit offset in ldr instruction. The offset is calculated relative to GOT section page address.
86 lines
2.6 KiB
C++
86 lines
2.6 KiB
C++
//===---- aarch64.cpp - Generic JITLink aarch64 edge kinds, utilities -----===//
|
|
//
|
|
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
|
|
// See https://llvm.org/LICENSE.txt for license information.
|
|
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
|
|
//
|
|
//===----------------------------------------------------------------------===//
|
|
//
|
|
// Generic utilities for graphs representing aarch64 objects.
|
|
//
|
|
//===----------------------------------------------------------------------===//
|
|
|
|
#include "llvm/ExecutionEngine/JITLink/aarch64.h"
|
|
|
|
#define DEBUG_TYPE "jitlink"
|
|
|
|
namespace llvm {
|
|
namespace jitlink {
|
|
namespace aarch64 {
|
|
|
|
const char NullPointerContent[8] = {0x00, 0x00, 0x00, 0x00,
|
|
0x00, 0x00, 0x00, 0x00};
|
|
|
|
const char PointerJumpStubContent[12] = {
|
|
0x10, 0x00, 0x00, (char)0x90u, // ADRP x16, <imm>@page21
|
|
0x10, 0x02, 0x40, (char)0xf9u, // LDR x16, [x16, <imm>@pageoff12]
|
|
0x00, 0x02, 0x1f, (char)0xd6u // BR x16
|
|
};
|
|
|
|
const char *getEdgeKindName(Edge::Kind R) {
|
|
switch (R) {
|
|
case Pointer64:
|
|
return "Pointer64";
|
|
case Pointer32:
|
|
return "Pointer32";
|
|
case Delta64:
|
|
return "Delta64";
|
|
case Delta32:
|
|
return "Delta32";
|
|
case NegDelta64:
|
|
return "NegDelta64";
|
|
case NegDelta32:
|
|
return "NegDelta32";
|
|
case Branch26PCRel:
|
|
return "Branch26PCRel";
|
|
case MoveWide16:
|
|
return "MoveWide16";
|
|
case LDRLiteral19:
|
|
return "LDRLiteral19";
|
|
case TestAndBranch14PCRel:
|
|
return "TestAndBranch14PCRel";
|
|
case CondBranch19PCRel:
|
|
return "CondBranch19PCRel";
|
|
case ADRLiteral21:
|
|
return "ADRLiteral21";
|
|
case Page21:
|
|
return "Page21";
|
|
case PageOffset12:
|
|
return "PageOffset12";
|
|
case GotPageOffset15:
|
|
return "GotPageOffset15";
|
|
case RequestGOTAndTransformToPage21:
|
|
return "RequestGOTAndTransformToPage21";
|
|
case RequestGOTAndTransformToPageOffset12:
|
|
return "RequestGOTAndTransformToPageOffset12";
|
|
case RequestGOTAndTransformToPageOffset15:
|
|
return "RequestGOTAndTransformToPageOffset15";
|
|
case RequestGOTAndTransformToDelta32:
|
|
return "RequestGOTAndTransformToDelta32";
|
|
case RequestTLVPAndTransformToPage21:
|
|
return "RequestTLVPAndTransformToPage21";
|
|
case RequestTLVPAndTransformToPageOffset12:
|
|
return "RequestTLVPAndTransformToPageOffset12";
|
|
case RequestTLSDescEntryAndTransformToPage21:
|
|
return "RequestTLSDescEntryAndTransformToPage21";
|
|
case RequestTLSDescEntryAndTransformToPageOffset12:
|
|
return "RequestTLSDescEntryAndTransformToPageOffset12";
|
|
default:
|
|
return getGenericEdgeKindName(static_cast<Edge::Kind>(R));
|
|
}
|
|
}
|
|
|
|
} // namespace aarch64
|
|
} // namespace jitlink
|
|
} // namespace llvm
|