61358d4fbe
This patch builds TOC and adds common relocations for ppc64. To build TOC, sections belong to TOC are merged into one section, serves as GOT and small data accessing. Relocations commonly seen in local function call, external function call and global variable reference are added. References - https://youtu.be/i-inxFudrgI - https://maskray.me/blog/2023-02-26-linker-notes-on-power-isa - https://openpowerfoundation.org/specifications/64bitelfabi/ Reviewed By: lhames Differential Revision: https://reviews.llvm.org/D154198
78 lines
2.4 KiB
C++
78 lines
2.4 KiB
C++
//===----- ppc64.cpp - Generic JITLink ppc64 edge kinds, utilities ------===//
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//
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// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
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// See https://llvm.org/LICENSE.txt for license information.
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// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
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//
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//===----------------------------------------------------------------------===//
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//
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// Generic utilities for graphs representing 64-bit PowerPC objects.
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//
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//===----------------------------------------------------------------------===//
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#include "llvm/ExecutionEngine/JITLink/ppc64.h"
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#define DEBUG_TYPE "jitlink"
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namespace llvm::jitlink::ppc64 {
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const char NullPointerContent[8] = {0x00, 0x00, 0x00, 0x00,
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0x00, 0x00, 0x00, 0x00};
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const char PointerJumpStubContent_little[20] = {
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0x18, 0x00, 0x41, (char)0xf8, // std r2, 24(r1)
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0x00, 0x00, (char)0x82, 0x3d, // addis r12, r2, OffHa
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0x00, 0x00, (char)0x8c, (char)0xe9, // ld r12, OffLo(r12)
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(char)0xa6, 0x03, (char)0x89, 0x7d, // mtctr r12
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0x20, 0x04, (char)0x80, 0x4e, // bctr
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};
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const char PointerJumpStubContent_big[20] = {
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(char)0xf8, 0x41, 0x00, 0x18, // std r2, 24(r1)
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0x3d, (char)0x82, 0x00, 0x00, // addis r12, r2, OffHa
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(char)0xe9, (char)0x8c, 0x00, 0x00, // ld r12, OffLo(r12)
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0x7d, (char)0x89, 0x03, (char)0xa6, // mtctr r12
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0x4e, (char)0x80, 0x04, 0x20, // bctr
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};
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const char *getEdgeKindName(Edge::Kind K) {
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switch (K) {
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case Pointer64:
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return "Pointer64";
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case Pointer32:
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return "Pointer32";
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case Delta64:
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return "Delta64";
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case Delta32:
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return "Delta32";
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case NegDelta32:
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return "NegDelta32";
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case Delta16:
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return "Delta16";
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case Delta16HA:
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return "Delta16HA";
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case Delta16LO:
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return "Delta16LO";
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case TOCDelta16HA:
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return "TOCDelta16HA";
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case TOCDelta16LO:
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return "TOCDelta16LO";
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case TOCDelta16DS:
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return "TOCDelta16DS";
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case TOCDelta16LODS:
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return "TOCDelta16LODS";
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case CallBranchDelta:
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return "CallBranchDelta";
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case CallBranchDeltaRestoreTOC:
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return "CallBranchDeltaRestoreTOC";
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case RequestPLTCallStub:
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return "RequestPLTCallStub";
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case RequestPLTCallStubSaveTOC:
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return "RequestPLTCallStubSaveTOC";
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default:
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return getGenericEdgeKindName(static_cast<Edge::Kind>(K));
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}
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}
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} // end namespace llvm::jitlink::ppc64
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