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https://github.com/RPCS3/llvm-mirror.git
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91dbc78882
Summary:
in the function PPCFunctionInfo::getParmsType(), there is if (Bits > 31 || (Bits > 30 && (Elt != FixedType || hasVectorParms())))
when the Bit is 31 and the Elt is not FixedType(for example the Elt is FloatingType) , the 31th bit will be not encoded, it leave the bit as zero, when the function Expected<SmallString<32>> XCOFF::parseParmsType() the original implement
**// unsigned ParmsNum = FixedParmsNum + FloatingParmsNum;
while (Bits < 32 && ParsedNum < ParmsNum) {
...
}//**
it will look the 31 bits (zero) as FixedType. which should be FloatingType, and get a error.
Reviewers: Jason Liu,ZarkoCA
Differential Revision: https://reviews.llvm.org/D105023
278 lines
8.0 KiB
C++
278 lines
8.0 KiB
C++
//===-- llvm/BinaryFormat/XCOFF.cpp - The XCOFF file format -----*- C++/-*-===//
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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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#include "llvm/BinaryFormat/XCOFF.h"
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#include "llvm/ADT/SmallString.h"
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#include "llvm/ADT/StringRef.h"
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#include "llvm/Support/Errc.h"
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#include "llvm/Support/Error.h"
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using namespace llvm;
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#define SMC_CASE(A) \
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case XCOFF::XMC_##A: \
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return #A;
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StringRef XCOFF::getMappingClassString(XCOFF::StorageMappingClass SMC) {
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switch (SMC) {
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SMC_CASE(PR)
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SMC_CASE(RO)
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SMC_CASE(DB)
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SMC_CASE(GL)
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SMC_CASE(XO)
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SMC_CASE(SV)
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SMC_CASE(SV64)
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SMC_CASE(SV3264)
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SMC_CASE(TI)
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SMC_CASE(TB)
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SMC_CASE(RW)
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SMC_CASE(TC0)
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SMC_CASE(TC)
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SMC_CASE(TD)
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SMC_CASE(DS)
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SMC_CASE(UA)
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SMC_CASE(BS)
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SMC_CASE(UC)
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SMC_CASE(TL)
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SMC_CASE(UL)
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SMC_CASE(TE)
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#undef SMC_CASE
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}
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// TODO: need to add a test case for "Unknown" and other SMC.
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return "Unknown";
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}
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#define RELOC_CASE(A) \
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case XCOFF::A: \
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return #A;
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StringRef XCOFF::getRelocationTypeString(XCOFF::RelocationType Type) {
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switch (Type) {
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RELOC_CASE(R_POS)
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RELOC_CASE(R_RL)
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RELOC_CASE(R_RLA)
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RELOC_CASE(R_NEG)
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RELOC_CASE(R_REL)
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RELOC_CASE(R_TOC)
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RELOC_CASE(R_TRL)
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RELOC_CASE(R_TRLA)
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RELOC_CASE(R_GL)
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RELOC_CASE(R_TCL)
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RELOC_CASE(R_REF)
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RELOC_CASE(R_BA)
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RELOC_CASE(R_BR)
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RELOC_CASE(R_RBA)
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RELOC_CASE(R_RBR)
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RELOC_CASE(R_TLS)
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RELOC_CASE(R_TLS_IE)
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RELOC_CASE(R_TLS_LD)
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RELOC_CASE(R_TLS_LE)
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RELOC_CASE(R_TLSM)
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RELOC_CASE(R_TLSML)
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RELOC_CASE(R_TOCU)
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RELOC_CASE(R_TOCL)
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}
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return "Unknown";
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}
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#undef RELOC_CASE
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#define LANG_CASE(A) \
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case XCOFF::TracebackTable::A: \
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return #A;
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StringRef XCOFF::getNameForTracebackTableLanguageId(
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XCOFF::TracebackTable::LanguageID LangId) {
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switch (LangId) {
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LANG_CASE(C)
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LANG_CASE(Fortran)
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LANG_CASE(Pascal)
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LANG_CASE(Ada)
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LANG_CASE(PL1)
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LANG_CASE(Basic)
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LANG_CASE(Lisp)
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LANG_CASE(Cobol)
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LANG_CASE(Modula2)
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LANG_CASE(Rpg)
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LANG_CASE(PL8)
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LANG_CASE(Assembly)
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LANG_CASE(Java)
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LANG_CASE(ObjectiveC)
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LANG_CASE(CPlusPlus)
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}
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return "Unknown";
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}
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#undef LANG_CASE
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Expected<SmallString<32>> XCOFF::parseParmsType(uint32_t Value,
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unsigned FixedParmsNum,
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unsigned FloatingParmsNum) {
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SmallString<32> ParmsType;
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int Bits = 0;
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unsigned ParsedFixedNum = 0;
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unsigned ParsedFloatingNum = 0;
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unsigned ParsedNum = 0;
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unsigned ParmsNum = FixedParmsNum + FloatingParmsNum;
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// In the function PPCFunctionInfo::getParmsType(), when there are no vector
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// parameters, the 31st bit of ParmsType is always zero even if it indicates a
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// floating point parameter. The parameter type information is lost. There
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// are only 8 GPRs used for parameters passing, the floating parameters
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// also occupy GPRs if there are available, so the 31st bit can never be a
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// fixed parameter. At the same time, we also do not know whether the zero of
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// the 31st bit indicates a float or double parameter type here. Therefore, we
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// ignore the 31st bit.
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while (Bits < 31 && ParsedNum < ParmsNum) {
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if (++ParsedNum > 1)
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ParmsType += ", ";
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if ((Value & TracebackTable::ParmTypeIsFloatingBit) == 0) {
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// Fixed parameter type.
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ParmsType += "i";
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++ParsedFixedNum;
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Value <<= 1;
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++Bits;
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} else {
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if ((Value & TracebackTable::ParmTypeFloatingIsDoubleBit) == 0)
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// Float parameter type.
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ParmsType += "f";
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else
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// Double parameter type.
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ParmsType += "d";
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++ParsedFloatingNum;
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Value <<= 2;
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Bits += 2;
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}
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}
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// We have more parameters than the 32 Bits could encode.
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if (ParsedNum < ParmsNum)
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ParmsType += ", ...";
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if (Value != 0u || ParsedFixedNum > FixedParmsNum ||
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ParsedFloatingNum > FloatingParmsNum)
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return createStringError(errc::invalid_argument,
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"ParmsType encodes can not map to ParmsNum "
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"parameters in parseParmsType.");
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return ParmsType;
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}
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SmallString<32> XCOFF::getExtendedTBTableFlagString(uint8_t Flag) {
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SmallString<32> Res;
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if (Flag & ExtendedTBTableFlag::TB_OS1)
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Res += "TB_OS1 ";
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if (Flag & ExtendedTBTableFlag::TB_RESERVED)
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Res += "TB_RESERVED ";
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if (Flag & ExtendedTBTableFlag::TB_SSP_CANARY)
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Res += "TB_SSP_CANARY ";
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if (Flag & ExtendedTBTableFlag::TB_OS2)
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Res += "TB_OS2 ";
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if (Flag & ExtendedTBTableFlag::TB_EH_INFO)
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Res += "TB_EH_INFO ";
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if (Flag & ExtendedTBTableFlag::TB_LONGTBTABLE2)
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Res += "TB_LONGTBTABLE2 ";
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// Two of the bits that haven't got used in the mask.
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if (Flag & 0x06)
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Res += "Unknown ";
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// Pop the last space.
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Res.pop_back();
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return Res;
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}
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Expected<SmallString<32>>
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XCOFF::parseParmsTypeWithVecInfo(uint32_t Value, unsigned FixedParmsNum,
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unsigned FloatingParmsNum,
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unsigned VectorParmsNum) {
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SmallString<32> ParmsType;
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unsigned ParsedFixedNum = 0;
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unsigned ParsedFloatingNum = 0;
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unsigned ParsedVectorNum = 0;
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unsigned ParsedNum = 0;
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unsigned ParmsNum = FixedParmsNum + FloatingParmsNum + VectorParmsNum;
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for (int Bits = 0; Bits < 32 && ParsedNum < ParmsNum; Bits += 2) {
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if (++ParsedNum > 1)
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ParmsType += ", ";
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switch (Value & TracebackTable::ParmTypeMask) {
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case TracebackTable::ParmTypeIsFixedBits:
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ParmsType += "i";
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++ParsedFixedNum;
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break;
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case TracebackTable::ParmTypeIsVectorBits:
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ParmsType += "v";
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++ParsedVectorNum;
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break;
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case TracebackTable::ParmTypeIsFloatingBits:
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ParmsType += "f";
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++ParsedFloatingNum;
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break;
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case TracebackTable::ParmTypeIsDoubleBits:
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ParmsType += "d";
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++ParsedFloatingNum;
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break;
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default:
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assert(false && "Unrecognized bits in ParmsType.");
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}
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Value <<= 2;
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}
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// We have more parameters than the 32 Bits could encode.
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if (ParsedNum < ParmsNum)
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ParmsType += ", ...";
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if (Value != 0u || ParsedFixedNum > FixedParmsNum ||
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ParsedFloatingNum > FloatingParmsNum || ParsedVectorNum > VectorParmsNum)
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return createStringError(
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errc::invalid_argument,
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"ParmsType encodes can not map to ParmsNum parameters "
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"in parseParmsTypeWithVecInfo.");
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return ParmsType;
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}
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Expected<SmallString<32>> XCOFF::parseVectorParmsType(uint32_t Value,
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unsigned ParmsNum) {
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SmallString<32> ParmsType;
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unsigned ParsedNum = 0;
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for (int Bits = 0; ParsedNum < ParmsNum && Bits < 32; Bits += 2) {
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if (++ParsedNum > 1)
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ParmsType += ", ";
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switch (Value & TracebackTable::ParmTypeMask) {
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case TracebackTable::ParmTypeIsVectorCharBit:
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ParmsType += "vc";
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break;
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case TracebackTable::ParmTypeIsVectorShortBit:
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ParmsType += "vs";
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break;
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case TracebackTable::ParmTypeIsVectorIntBit:
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ParmsType += "vi";
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break;
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case TracebackTable::ParmTypeIsVectorFloatBit:
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ParmsType += "vf";
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break;
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}
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Value <<= 2;
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}
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// We have more parameters than the 32 Bits could encode.
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if (ParsedNum < ParmsNum)
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ParmsType += ", ...";
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if (Value != 0u)
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return createStringError(errc::invalid_argument,
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"ParmsType encodes more than ParmsNum parameters "
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"in parseVectorParmsType.");
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return ParmsType;
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}
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