mirror of
https://github.com/c64scene-ar/llvm-6502.git
synced 2024-12-21 00:32:23 +00:00
685c350ae7
(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
98 lines
3.4 KiB
C++
98 lines
3.4 KiB
C++
//===-- ARM/ARMFixupKinds.h - ARM Specific Fixup Entries --------*- C++ -*-===//
|
|
//
|
|
// The LLVM Compiler Infrastructure
|
|
//
|
|
// This file is distributed under the University of Illinois Open Source
|
|
// License. See LICENSE.TXT for details.
|
|
//
|
|
//===----------------------------------------------------------------------===//
|
|
|
|
#ifndef LLVM_ARM_ARMFIXUPKINDS_H
|
|
#define LLVM_ARM_ARMFIXUPKINDS_H
|
|
|
|
#include "llvm/MC/MCFixup.h"
|
|
|
|
namespace llvm {
|
|
namespace ARM {
|
|
enum Fixups {
|
|
// fixup_arm_ldst_pcrel_12 - 12-bit PC relative relocation for symbol
|
|
// addresses
|
|
fixup_arm_ldst_pcrel_12 = FirstTargetFixupKind,
|
|
|
|
// fixup_t2_ldst_pcrel_12 - Equivalent to fixup_arm_ldst_pcrel_12, with
|
|
// the 16-bit halfwords reordered.
|
|
fixup_t2_ldst_pcrel_12,
|
|
|
|
// 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).
|
|
fixup_arm_pcrel_10,
|
|
// fixup_t2_pcrel_10 - Equivalent to fixup_arm_pcrel_10, accounting for
|
|
// the short-swapped encoding of Thumb2 instructions.
|
|
fixup_t2_pcrel_10,
|
|
// fixup_thumb_adr_pcrel_10 - 10-bit PC relative relocation for symbol
|
|
// addresses where the lower 2 bits are not encoded (so it's encoded as an
|
|
// 8-bit immediate).
|
|
fixup_thumb_adr_pcrel_10,
|
|
// fixup_arm_adr_pcrel_12 - 12-bit PC relative relocation for the ADR
|
|
// instruction.
|
|
fixup_arm_adr_pcrel_12,
|
|
// fixup_t2_adr_pcrel_12 - 12-bit PC relative relocation for the ADR
|
|
// instruction.
|
|
fixup_t2_adr_pcrel_12,
|
|
// fixup_arm_condbranch - 24-bit PC relative relocation for conditional branch
|
|
// instructions.
|
|
fixup_arm_condbranch,
|
|
// fixup_arm_uncondbranch - 24-bit PC relative relocation for
|
|
// branch instructions. (unconditional)
|
|
fixup_arm_uncondbranch,
|
|
// fixup_t2_condbranch - 20-bit PC relative relocation for Thumb2 direct
|
|
// uconditional branch instructions.
|
|
fixup_t2_condbranch,
|
|
// fixup_t2_uncondbranch - 20-bit PC relative relocation for Thumb2 direct
|
|
// branch unconditional branch instructions.
|
|
fixup_t2_uncondbranch,
|
|
|
|
// fixup_arm_thumb_br - 12-bit fixup for Thumb B instructions.
|
|
fixup_arm_thumb_br,
|
|
|
|
// fixup_arm_thumb_blx - Fixup for Thumb BL instructions.
|
|
fixup_arm_thumb_bl,
|
|
|
|
// fixup_arm_thumb_blx - Fixup for Thumb BLX instructions.
|
|
fixup_arm_thumb_blx,
|
|
|
|
// fixup_arm_thumb_cb - Fixup for Thumb branch instructions.
|
|
fixup_arm_thumb_cb,
|
|
|
|
// fixup_arm_thumb_cp - Fixup for Thumb load/store from constant pool instrs.
|
|
fixup_arm_thumb_cp,
|
|
|
|
// fixup_arm_thumb_bcc - Fixup for Thumb conditional branching instructions.
|
|
fixup_arm_thumb_bcc,
|
|
|
|
// The next two are for the movt/movw pair
|
|
// the 16bit imm field are split into imm{15-12} and imm{11-0}
|
|
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)
|
|
// result in different reloc tags than the above two.
|
|
// 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,
|
|
NumTargetFixupKinds = LastTargetFixupKind - FirstTargetFixupKind
|
|
};
|
|
}
|
|
}
|
|
|
|
#endif
|