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author | Bruno Cardoso Lopes <bruno.cardoso@gmail.com> | 2009-08-05 00:11:21 +0000 |
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committer | Bruno Cardoso Lopes <bruno.cardoso@gmail.com> | 2009-08-05 00:11:21 +0000 |
commit | e55fef36a93badf6c4925ea2455a1ca6b361357e (patch) | |
tree | ca3cfc71e21e717b62b0dfc93bd1af9bbb0518db /lib/Target/X86/X86Relocations.h | |
parent | 339685269f8bec31eeb0edb98c832dde277c9c7d (diff) | |
download | external_llvm-e55fef36a93badf6c4925ea2455a1ca6b361357e.zip external_llvm-e55fef36a93badf6c4925ea2455a1ca6b361357e.tar.gz external_llvm-e55fef36a93badf6c4925ea2455a1ca6b361357e.tar.bz2 |
1) Proper emit displacements for x86, using absolute relocations where necessary
for ELF to work.
2) RIP addressing: Use SIB bytes for absolute relocations where RegBase=0,
IndexReg=0.
3) The JIT can get the real address of cstpools and jmptables during
code emission, fix that for object code emission
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@78129 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'lib/Target/X86/X86Relocations.h')
-rw-r--r-- | lib/Target/X86/X86Relocations.h | 20 |
1 files changed, 15 insertions, 5 deletions
diff --git a/lib/Target/X86/X86Relocations.h b/lib/Target/X86/X86Relocations.h index aceb9fc..990962d 100644 --- a/lib/Target/X86/X86Relocations.h +++ b/lib/Target/X86/X86Relocations.h @@ -20,7 +20,9 @@ namespace llvm { namespace X86 { /// RelocationType - An enum for the x86 relocation codes. Note that /// the terminology here doesn't follow x86 convention - word means - /// 32-bit and dword means 64-bit. + /// 32-bit and dword means 64-bit. The relocations will be treated + /// by JIT or ObjectCode emitters, this is transparent to the x86 code + /// emitter but JIT and ObjectCode will treat them differently enum RelocationType { /// reloc_pcrel_word - PC relative relocation, add the relocated value to /// the value already in memory, after we adjust it for where the PC is. @@ -30,11 +32,19 @@ namespace llvm { /// value to the value already in memory, after we adjust it for where the /// PIC base is. reloc_picrel_word = 1, - - /// reloc_absolute_word, reloc_absolute_dword - Absolute relocation, just - /// add the relocated value to the value already in memory. + + /// reloc_absolute_word - absolute relocation, just add the relocated + /// value to the value already in memory. reloc_absolute_word = 2, - reloc_absolute_dword = 3 + + /// reloc_absolute_word_sext - absolute relocation, just add the relocated + /// value to the value already in memory. In object files, it represents a + /// value which must be sign-extended when resolving the relocation. + reloc_absolute_word_sext = 3, + + /// reloc_absolute_dword - absolute relocation, just add the relocated + /// value to the value already in memory. + reloc_absolute_dword = 4 }; } } |