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| author | Rafael Espindola <rafael.espindola@gmail.com> | 2010-09-22 17:43:04 +0000 |
|---|---|---|
| committer | Rafael Espindola <rafael.espindola@gmail.com> | 2010-09-22 17:43:04 +0000 |
| commit | 1963572f9de87cd1ac5f16e504e27c3c26267e6f (patch) | |
| tree | 2d868083e3709a4fe73d365a62b7a7a6fa639da0 | |
| parent | a2244cb38781e596110023399c7902b5ee5087fe (diff) | |
Correctly align bss.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@114556 91177308-0d34-0410-b5e6-96231b3b80d8
| -rw-r--r-- | lib/MC/MCELFStreamer.cpp | 6 | ||||
| -rw-r--r-- | test/MC/ELF/align-bss.s | 17 |
2 files changed, 23 insertions, 0 deletions
diff --git a/lib/MC/MCELFStreamer.cpp b/lib/MC/MCELFStreamer.cpp index fd01594613..9b46b836ca 100644 --- a/lib/MC/MCELFStreamer.cpp +++ b/lib/MC/MCELFStreamer.cpp @@ -322,9 +322,15 @@ void MCELFStreamer::EmitCommonSymbol(MCSymbol *Symbol, uint64_t Size, SectionKind::getBSS()); MCSectionData &SectData = getAssembler().getOrCreateSectionData(*Section); + new MCAlignFragment(ByteAlignment, 0, 1, ByteAlignment, &SectData); + MCFragment *F = new MCFillFragment(0, 0, Size, &SectData); SD.setFragment(F); Symbol->setSection(*Section); + + // Update the maximum alignment of the section if necessary. + if (ByteAlignment > SectData.getAlignment()) + SectData.setAlignment(ByteAlignment); } else { SD.setCommon(Size, ByteAlignment); } diff --git a/test/MC/ELF/align-bss.s b/test/MC/ELF/align-bss.s new file mode 100644 index 0000000000..b6a3ba8cc4 --- /dev/null +++ b/test/MC/ELF/align-bss.s @@ -0,0 +1,17 @@ +// RUN: llvm-mc -filetype=obj -triple x86_64-pc-linux-gnu %s -o - | elf-dump | FileCheck %s + +// Test that the bss section is correctly aligned + + .local foo + .comm foo,2048,16 + +// CHECK: ('sh_name', 13) # '.bss' +// CHECK-NEXT: ('sh_type', 8) +// CHECK-NEXT: ('sh_flags', 3) +// CHECK-NEXT: ('sh_addr', 0) +// CHECK-NEXT: ('sh_offset', 64) +// CHECK-NEXT: ('sh_size', 2048) +// CHECK-NEXT: ('sh_link', 0) +// CHECK-NEXT: ('sh_info', 0) +// CHECK-NEXT: ('sh_addralign', 16) +// CHECK-NEXT: ('sh_entsize', 0) |