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Add support for ARM and AArch64 big endian objects to 

RelocVisitor.

Patch by Charlie Turner.

llvm-svn: 219109
This commit is contained in:
Eric Christopher 2014-10-06 07:02:58 +00:00
parent 47e079d45e
commit 9864519c8b
3 changed files with 43 additions and 4 deletions
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17
llvm/include/llvm/Object/RelocVisitor.h
View File

@ -304,7 +304,8 @@ private:
// AArch64 ELF
RelocToApply visitELF_AARCH64_ABS32(RelocationRef R, uint64_t Value) {
int64_t Addend = getAddend64LE(R);
int64_t Addend;
getELFRelocationAddend(R, Addend);
int64_t Res = Value + Addend;
// Overflow check allows for both signed and unsigned interpretation.
@ -315,7 +316,8 @@ private:
}
RelocToApply visitELF_AARCH64_ABS64(RelocationRef R, uint64_t Value) {
int64_t Addend = getAddend64LE(R);
int64_t Addend;
getELFRelocationAddend(R, Addend);
return RelocToApply(Value + Addend, 8);
}
@ -352,8 +354,15 @@ private:
}
RelocToApply visitELF_ARM_ABS32(RelocationRef R, uint64_t Value) {
int64_t Addend = getAddend32LE(R);
return RelocToApply(Value + Addend, 4);
int64_t Addend;
getELFRelocationAddend(R, Addend);
int64_t Res = Value + Addend;
// Overflow check allows for both signed and unsigned interpretation.
if (Res < INT32_MIN || Res > UINT32_MAX)
HasError = true;
return RelocToApply(static_cast<uint32_t>(Res), 4);
}
};

14
llvm/test/DebugInfo/AArch64/big-endian-dump.ll Normal file
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@ -0,0 +1,14 @@
; RUN: llc -O0 -filetype=obj -mtriple=aarch64_be-none-linux < %s | llvm-dwarfdump -
target datalayout = "E-m:e-i64:64-i128:128-n32:64-S128"
!llvm.dbg.cu = !{!0}
!llvm.module.flags = !{!3, !4}
!llvm.ident = !{!5}
!0 = metadata !{i32 786449, metadata !1, i32 12, metadata !"clang version 3.6.0 ", i1 false, metadata !"", i32 0, metadata !2, metadata !2, metadata !2, metadata !2, metadata !2, metadata !"", i32 1} ; [ DW_TAG_compile_unit ] [/a/empty.c] [DW_LANG_C99]
!1 = metadata !{metadata !"empty.c", metadata !"/a"}
!2 = metadata !{}
!3 = metadata !{i32 2, metadata !"Dwarf Version", i32 4}
!4 = metadata !{i32 2, metadata !"Debug Info Version", i32 1}
!5 = metadata !{metadata !"clang version 3.6.0 "}

16
llvm/test/DebugInfo/ARM/big-endian-dump.ll Normal file
View File

@ -0,0 +1,16 @@
; RUN: llc -O0 -filetype=obj -mtriple=armeb-none-linux < %s | llvm-dwarfdump -
target datalayout = "E-m:e-p:32:32-i64:64-v128:64:128-n32-S64"
!llvm.dbg.cu = !{!0}
!llvm.module.flags = !{!3, !4, !5, !6}
!llvm.ident = !{!7}
!0 = metadata !{i32 786449, metadata !1, i32 12, metadata !"clang version 3.6.0 ", i1 false, metadata !"", i32 0, metadata !2, metadata !2, metadata !2, metadata !2, metadata !2, metadata !"", i32 1} ; [ DW_TAG_compile_unit ] [/a/empty.c] [DW_LANG_C99]
!1 = metadata !{metadata !"empty.c", metadata !"/a"}
!2 = metadata !{}
!3 = metadata !{i32 2, metadata !"Dwarf Version", i32 4}
!4 = metadata !{i32 2, metadata !"Debug Info Version", i32 1}
!5 = metadata !{i32 1, metadata !"wchar_size", i32 4}
!6 = metadata !{i32 1, metadata !"min_enum_size", i32 4}
!7 = metadata !{metadata !"clang version 3.6.0 "}