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[Mips64][mcjit] Add R_MIPS_PC32 relocation

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This patch adds R_MIPS_PC32 relocation for Mips64.

Patch by Vladimir Radosavljevic.

Differential Revision: http://reviews.llvm.org/D10235


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@239301 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Petar Jovanovic 2015-06-08 14:10:23 +00:00
parent 17e24879cb
commit f8aad6c1ef
2 changed files with 14 additions and 0 deletions
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5
lib/ExecutionEngine/RuntimeDyld/RuntimeDyldELF.cpp
View File

@ -631,6 +631,10 @@ RuntimeDyldELF::evaluateMIPS64Relocation(const SectionEntry &Section,
uint64_t FinalAddress = (Section.LoadAddress + Offset);
return ((Value + Addend - FinalAddress - 4) >> 2) & 0xffff;
}
case ELF::R_MIPS_PC32: {
uint64_t FinalAddress = (Section.LoadAddress + Offset);
return Value + Addend - FinalAddress;
}
case ELF::R_MIPS_PC18_S3: {
uint64_t FinalAddress = (Section.LoadAddress + Offset);
return ((Value + Addend - ((FinalAddress | 7) ^ 7)) >> 3) & 0x3ffff;
@ -669,6 +673,7 @@ void RuntimeDyldELF::applyMIPS64Relocation(uint8_t *TargetPtr,
break;
case ELF::R_MIPS_32:
case ELF::R_MIPS_GPREL32:
case ELF::R_MIPS_PC32:
writeBytesUnaligned(CalculatedValue & 0xffffffff, TargetPtr, 4);
break;
case ELF::R_MIPS_64:

9
test/ExecutionEngine/RuntimeDyld/Mips/ELF_Mips64r2N64_PIC_relocations.s
View File

@ -2,6 +2,15 @@
# RUN: llc -mtriple=mips64el-unknown-linux -relocation-model=pic -filetype=obj -o %T/test_ELF_ExternalFunction_Mips64N64.o %S/Inputs/ExternalFunction.ll
# RUN: llvm-rtdyld -triple=mips64el-unknown-linux -verify -map-section test_ELF_Mips64N64.o,.text=0x1000 -map-section test_ELF_ExternalFunction_Mips64N64.o,.text=0x10000 -check=%s %/T/test_ELF_Mips64N64.o %T/test_ELF_ExternalFunction_Mips64N64.o
.data
# Test R_MIPS_PC32 relocation.
# rtdyld-check: *{4}(R_MIPS_PC32) = (foo - R_MIPS_PC32)[31:0]
R_MIPS_PC32:
.word foo-.
# rtdyld-check: *{4}(R_MIPS_PC32 + 4) = (foo - tmp1)[31:0]
tmp1:
.4byte foo-tmp1
.text
.abicalls
.section .mdebug.abi64,"",@progbits