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Teach ARM/MC/ELF to handle R_ARM_JUMP24 relocation type for conditional jumps.

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(yes, this is different from R_ARM_CALL)

- Adds a new method getARMBranchTargetOpValue() which handles the
  necessary distinction between the conditional and unconditional br/bl
  needed for ARM/ELF

At least for ARM mode, the needed fixup for conditional versus unconditional
br/bl is identical, but the ARM docs and existing ARM tools expect this
reloc type...

Added a few FIXME's for future naming fixups in ARMInstrInfo.td




git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@124895 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Jason W Kim
2011-02-04 19:47:15 +00:00
parent cb6404711b
commit 685c350ae7
9 changed files with 88 additions and 16 deletions
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3
lib/MC/MachObjectWriter.cpp
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@@ -940,7 +940,8 @@ public:
case ARM::fixup_arm_ldst_pcrel_12:
case ARM::fixup_arm_pcrel_10:
case ARM::fixup_arm_adr_pcrel_12:
case ARM::fixup_arm_branch:
case ARM::fixup_arm_condbranch:
case ARM::fixup_arm_uncondbranch:
RelocType = unsigned(macho::RIT_ARM_Branch24Bit);
// Report as 'long', even though that is not quite accurate.
Log2Size = llvm::Log2_32(4);