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Completed :lower16: / :upper16: support for movw / movt pairs on Darwin.

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- Fixed :upper16: fix up routine. It should be shifting down the top 16 bits first.
- Added support for Thumb2 :lower16: and :upper16: fix up.
- Added :upper16: and :lower16: relocation support to mach-o object writer.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@123424 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Evan Cheng
2011-01-14 02:38:49 +00:00
parent b6436e5be1
commit f3eb3bba16
8 changed files with 221 additions and 44 deletions
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5
lib/Target/ARM/ARMFixupKinds.h
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@@ -70,9 +70,10 @@ enum Fixups {
// The next two are for the movt/movw pair
// the 16bit imm field are split into imm{15-12} and imm{11-0}
// Fixme: We need new ones for Thumb.
fixup_arm_movt_hi16, // :upper16:
fixup_arm_movw_lo16, // :lower16:
fixup_t2_movt_hi16, // :upper16:
fixup_t2_movw_lo16, // :lower16:
// It is possible to create an "immediate" that happens to be pcrel.
// movw r0, :lower16:Foo-(Bar+8) and movt r0, :upper16:Foo-(Bar+8)
@@ -80,6 +81,8 @@ enum Fixups {
// Needed to support ELF::R_ARM_MOVT_PREL and ELF::R_ARM_MOVW_PREL_NC
fixup_arm_movt_hi16_pcrel, // :upper16:
fixup_arm_movw_lo16_pcrel, // :lower16:
fixup_t2_movt_hi16_pcrel, // :upper16:
fixup_t2_movw_lo16_pcrel, // :lower16:
// Marker
LastTargetFixupKind,