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[elf2] Add R_X86_64_32S. 

llvm-svn: 247758
This commit is contained in:
Michael J. Spencer 2015-09-16 00:24:19 +00:00
parent 92063b3bf2
commit 75e5fda3de
3 changed files with 27 additions and 3 deletions
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10
lld/ELF/Writer.cpp
View File

@ -501,12 +501,18 @@ template <class ELFT> void OutputSection<ELFT>::writeTo(uint8_t *Buf) {
support::endian::write64le(Location, SymVA + RI.r_addend);
break;
case llvm::ELF::R_X86_64_32: {
case llvm::ELF::R_X86_64_32S:
APInt VA(64, SymVA);
APInt Addend(64, RI.r_addend, true);
APInt Result64 = VA + Addend;
APInt Result = Result64.trunc(32);
if (Result.zext(64) != Result64)
error("Relocation out of range");
if (Type == llvm::ELF::R_X86_64_32) {
if (Result.zext(64) != Result64)
error("Relocation out of range");
} else
if (Result.sext(64) != Result64)
error("R_X86_64_32S out of range");
support::endian::write32le(Location, Result.getZExtValue());
break;
}

9
lld/test/elf2/relocation-32S-error.s Normal file
View File

@ -0,0 +1,9 @@
// RUN: llvm-mc -filetype=obj -triple=x86_64-pc-linux %s -o %t
// RUN: not lld -flavor gnu2 %t -o %t2 2>&1 | FileCheck %s
// REQUIRES: x86
.global _start
_start:
movq _start - 0x1000000000000, %rdx
#CHECK: R_X86_64_32S out of range

11
lld/test/elf2/relocation.s
View File

@ -35,10 +35,19 @@ R_X86_64_32:
// CHECK-NEXT: R_X86_64_32:
// CHECK-NEXT: 12000: {{.*}} movl $73728, %edx
.section .R_X86_64_32S,"ax",@progbits
.global R_X86_64_32S
R_X86_64_32S:
movq lulz - 0x100000, %rdx
// CHECK: Disassembly of section .R_X86_64_32S:
// CHECK-NEXT: R_X86_64_32S:
// CHECK-NEXT: {{.*}}: {{.*}} movq -978935, %rdx
.section .R_X86_64_64,"a",@progbits
.global R_X86_64_64
R_X86_64_64:
.quad R_X86_64_64
// CHECK: Contents of section .R_X86_64_64:
// CHECK-NEXT: 13000 00300100 00000000
// CHECK-NEXT: 14000 00400100 00000000