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[bpf] fix a bug which causes incorrect big endian reloc fixup

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o Add bpfeb support in BPF dwarfdump unit test case

Signed-off-by: Yonghong Song <yhs@fb.com>
Signed-off-by: Alexei Starovoitov <ast@fb.com>

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@302265 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Alexei Starovoitov 2017-05-05 18:05:00 +00:00
parent 7b3685be8d
commit 0a1cb7297f
2 changed files with 3 additions and 1 deletions
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2
lib/Target/BPF/MCTargetDesc/BPFAsmBackend.cpp
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@ -70,7 +70,7 @@ void BPFAsmBackend::applyFixup(const MCFixup &Fixup, char *Data,
unsigned Size = Fixup.getKind() == FK_Data_4 ? 4 : 8;
for (unsigned i = 0; i != Size; ++i) {
unsigned Idx = IsLittleEndian ? i : Size - i;
unsigned Idx = IsLittleEndian ? i : Size - i - 1;
Data[Fixup.getOffset() + Idx] = uint8_t(Value >> (i * 8));
}
} else {

2
test/CodeGen/BPF/dwarfdump.ll
View File

@ -1,5 +1,7 @@
; RUN: llc -O2 -march=bpfel %s -o %t -filetype=obj
; RUN: llvm-dwarfdump -debug-dump=line %t | FileCheck %s
; RUN: llc -O2 -march=bpfeb %s -o %t -filetype=obj
; RUN: llvm-dwarfdump -debug-dump=line %t | FileCheck %s
source_filename = "testprog.c"
target datalayout = "e-m:e-p:64:64-i64:64-n32:64-S128"