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llvm-6502/test/MC/ELF/merge.s

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Replace coff-/elf-dump with llvm-readobj git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@179361 91177308-0d34-0410-b5e6-96231b3b80d8
2013-04-12 04:06:46 +00:00
// RUN: llvm-mc -filetype=obj -triple x86_64-pc-linux-gnu %s -o - | llvm-readobj -r | FileCheck %s
Move ELF to HasReliableSymbolDifference=true. Also take the opportunity to put symbols defined in merge sections in independent atoms. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@114786 91177308-0d34-0410-b5e6-96231b3b80d8
2010-09-25 05:42:19 +00:00
Completely rewrite ELFObjectWriter::RecordRelocation. I started trying to fix a small issue, but this code has seen a small fix too many. The old code was fairly convoluted. Some of the issues it had: * It failed to check if a symbol difference was in the some section when converting a relocation to pcrel. * It failed to check if the relocation was already pcrel. * The pcrel value computation was wrong in some cases (relocation-pc.s) * It was missing quiet a few cases where it should not convert symbol relocations to section relocations, leaving the backends to patch it up. * It would not propagate the fact that it had changed a relocation to pcrel, requiring a quiet nasty work around in ARM. * It was missing comments. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@205076 91177308-0d34-0410-b5e6-96231b3b80d8
2014-03-29 06:26:49 +00:00
// Test that relocations with local symbols in a mergeable section are done
// with a reference to the symbol if the offset is non zero.
Tests that now pass. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@115622 91177308-0d34-0410-b5e6-96231b3b80d8
2010-10-05 15:43:32 +00:00
movsd .Lfoo(%rip), %xmm1
movl $.Lfoo, %edi
movl $.Lfoo+2, %edi
Use a relocation against the symbol if it is a PLT and the symbol is in another section. Common because of linkonce sections. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@115718 91177308-0d34-0410-b5e6-96231b3b80d8
2010-10-05 23:57:26 +00:00
jmp foo@PLT
Correctly handle GOTPCREL relocations. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@115793 91177308-0d34-0410-b5e6-96231b3b80d8
2010-10-06 16:23:36 +00:00
movq foo@GOTPCREL, %rax
If a symbol is global, reloc against it even if it is in a mergeable section. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@115817 91177308-0d34-0410-b5e6-96231b3b80d8
2010-10-06 19:27:21 +00:00
movq zed, %rax
Completely rewrite ELFObjectWriter::RecordRelocation. I started trying to fix a small issue, but this code has seen a small fix too many. The old code was fairly convoluted. Some of the issues it had: * It failed to check if a symbol difference was in the some section when converting a relocation to pcrel. * It failed to check if the relocation was already pcrel. * The pcrel value computation was wrong in some cases (relocation-pc.s) * It was missing quiet a few cases where it should not convert symbol relocations to section relocations, leaving the backends to patch it up. * It would not propagate the fact that it had changed a relocation to pcrel, requiring a quiet nasty work around in ARM. * It was missing comments. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@205076 91177308-0d34-0410-b5e6-96231b3b80d8
2014-03-29 06:26:49 +00:00
movsd .Lfoo+4(%rip), %xmm1
Tests that now pass. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@115622 91177308-0d34-0410-b5e6-96231b3b80d8
2010-10-05 15:43:32 +00:00
Move ELF to HasReliableSymbolDifference=true. Also take the opportunity to put symbols defined in merge sections in independent atoms. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@114786 91177308-0d34-0410-b5e6-96231b3b80d8
2010-09-25 05:42:19 +00:00
.section .sec1,"aM",@progbits,16
.Lfoo:
If a symbol is global, reloc against it even if it is in a mergeable section. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@115817 91177308-0d34-0410-b5e6-96231b3b80d8
2010-10-06 19:27:21 +00:00
zed:
.global zed
Move ELF to HasReliableSymbolDifference=true. Also take the opportunity to put symbols defined in merge sections in independent atoms. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@114786 91177308-0d34-0410-b5e6-96231b3b80d8
2010-09-25 05:42:19 +00:00
Use a relocation against the symbol if it is a PLT and the symbol is in another section. Common because of linkonce sections. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@115718 91177308-0d34-0410-b5e6-96231b3b80d8
2010-10-05 23:57:26 +00:00
.section bar,"ax",@progbits
foo:
Replace coff-/elf-dump with llvm-readobj git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@179361 91177308-0d34-0410-b5e6-96231b3b80d8
2013-04-12 04:06:46 +00:00
// CHECK: Relocations [
Change how we iterate over relocations on ELF. For COFF and MachO, sections semantically have relocations that apply to them. That is not the case on ELF. In relocatable objects (.o), a section with relocations in ELF has offsets to another section where the relocations should be applied. In dynamic objects and executables, relocations don't have an offset, they have a virtual address. The section sh_info may or may not point to another section, but that is not actually used for resolving the relocations. This patch exposes that in the ObjectFile API. It has the following advantages: * Most (all?) clients can handle this more efficiently. They will normally walk all relocations, so doing an effort to iterate in a particular order doesn't save time. * llvm-readobj now prints relocations in the same way the native readelf does. * probably most important, relocations that don't point to any section are now visible. This is the case of relocations in the rela.dyn section. See the updated relocation-executable.test for example. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@182908 91177308-0d34-0410-b5e6-96231b3b80d8
2013-05-30 03:05:14 +00:00
// CHECK-NEXT: Section (2) .rela.text {
Replace coff-/elf-dump with llvm-readobj git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@179361 91177308-0d34-0410-b5e6-96231b3b80d8
2013-04-12 04:06:46 +00:00
// CHECK-NEXT: 0x{{[^ ]+}} R_X86_64_PC32 .Lfoo 0x{{[^ ]+}}
// CHECK-NEXT: 0x{{[^ ]+}} R_X86_64_32 .sec1 0x{{[^ ]+}}
// CHECK-NEXT: 0x{{[^ ]+}} R_X86_64_32 .Lfoo 0x{{[^ ]+}}
// CHECK-NEXT: 0x{{[^ ]+}} R_X86_64_PLT32 foo 0x{{[^ ]+}}
// CHECK-NEXT: 0x{{[^ ]+}} R_X86_64_GOTPCREL foo 0x{{[^ ]+}}
// CHECK-NEXT: 0x{{[^ ]+}} R_X86_64_32S zed 0x{{[^ ]+}}
Completely rewrite ELFObjectWriter::RecordRelocation. I started trying to fix a small issue, but this code has seen a small fix too many. The old code was fairly convoluted. Some of the issues it had: * It failed to check if a symbol difference was in the some section when converting a relocation to pcrel. * It failed to check if the relocation was already pcrel. * The pcrel value computation was wrong in some cases (relocation-pc.s) * It was missing quiet a few cases where it should not convert symbol relocations to section relocations, leaving the backends to patch it up. * It would not propagate the fact that it had changed a relocation to pcrel, requiring a quiet nasty work around in ARM. * It was missing comments. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@205076 91177308-0d34-0410-b5e6-96231b3b80d8
2014-03-29 06:26:49 +00:00
// CHECK-NEXT: 0x{{[^ ]+}} R_X86_64_PC32 .sec1 0x{{[^ ]+}}
Replace coff-/elf-dump with llvm-readobj git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@179361 91177308-0d34-0410-b5e6-96231b3b80d8
2013-04-12 04:06:46 +00:00
// CHECK-NEXT: }
// CHECK-NEXT: ]
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