diff options
Diffstat (limited to 'contrib/llvm/lib/Target/ARM/MCTargetDesc/ARMFixupKinds.h')
| -rw-r--r-- | contrib/llvm/lib/Target/ARM/MCTargetDesc/ARMFixupKinds.h | 24 |
1 files changed, 23 insertions, 1 deletions
diff --git a/contrib/llvm/lib/Target/ARM/MCTargetDesc/ARMFixupKinds.h b/contrib/llvm/lib/Target/ARM/MCTargetDesc/ARMFixupKinds.h index 350c92d..0085feb 100644 --- a/contrib/llvm/lib/Target/ARM/MCTargetDesc/ARMFixupKinds.h +++ b/contrib/llvm/lib/Target/ARM/MCTargetDesc/ARMFixupKinds.h @@ -1,4 +1,4 @@ -//===-- ARM/ARMFixupKinds.h - ARM Specific Fixup Entries --------*- C++ -*-===// +//===-- ARMFixupKinds.h - ARM Specific Fixup Entries ------------*- C++ -*-===// // // The LLVM Compiler Infrastructure // @@ -23,6 +23,9 @@ enum Fixups { // the 16-bit halfwords reordered. fixup_t2_ldst_pcrel_12, + // fixup_arm_pcrel_10_unscaled - 10-bit PC relative relocation for symbol + // addresses used in LDRD/LDRH/LDRB/etc. instructions. All bits are encoded. + fixup_arm_pcrel_10_unscaled, // fixup_arm_pcrel_10 - 10-bit PC relative relocation for symbol addresses // used in VFP instructions where the lower 2 bits are not encoded // (so it's encoded as an 8-bit immediate). @@ -56,6 +59,25 @@ enum Fixups { // fixup_arm_thumb_br - 12-bit fixup for Thumb B instructions. fixup_arm_thumb_br, + // The following fixups handle the ARM BL instructions. These can be + // conditionalised; however, the ARM ELF ABI requires a different relocation + // in that case: R_ARM_JUMP24 instead of R_ARM_CALL. The difference is that + // R_ARM_CALL is allowed to change the instruction to a BLX inline, which has + // no conditional version; R_ARM_JUMP24 would have to insert a veneer. + // + // MachO does not draw a distinction between the two cases, so it will treat + // fixup_arm_uncondbl and fixup_arm_condbl as identical fixups. + + // fixup_arm_uncondbl - Fixup for unconditional ARM BL instructions. + fixup_arm_uncondbl, + + // fixup_arm_condbl - Fixup for ARM BL instructions with nontrivial + // conditionalisation. + fixup_arm_condbl, + + // fixup_arm_blx - Fixup for ARM BLX instructions. + fixup_arm_blx, + // fixup_arm_thumb_bl - Fixup for Thumb BL instructions. fixup_arm_thumb_bl, |
