llvm/lib/Target/AArch64/MCTargetDesc/AArch64FixupKinds.h

   1 //===-- AArch64FixupKinds.h - AArch64 Specific Fixup Entries ----*- C++ -*-===//
   2 //
   3 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
   4 // See https://llvm.org/LICENSE.txt for license information.
   5 // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
   6 //
   7 //===----------------------------------------------------------------------===//
   8
   9 #ifndef LLVM_LIB_TARGET_AARCH64_MCTARGETDESC_AARCH64FIXUPKINDS_H
  10 #define LLVM_LIB_TARGET_AARCH64_MCTARGETDESC_AARCH64FIXUPKINDS_H
  11
  12 #include "llvm/MC/MCFixup.h"
  13
  14 namespace llvm {
  15 namespace AArch64 {
  16
  17 enum Fixups {
  18   // A 21-bit pc-relative immediate inserted into an ADR instruction.
  19   fixup_aarch64_pcrel_adr_imm21 = FirstTargetFixupKind,
  20
  21   // A 21-bit pc-relative immediate inserted into an ADRP instruction.
  22   fixup_aarch64_pcrel_adrp_imm21,
  23
  24   // 12-bit fixup for add/sub instructions. No alignment adjustment. All value
  25   // bits are encoded.
  26   fixup_aarch64_add_imm12,
  27
  28   // unsigned 12-bit fixups for load and store instructions.
  29   fixup_aarch64_ldst_imm12_scale1,
  30   fixup_aarch64_ldst_imm12_scale2,
  31   fixup_aarch64_ldst_imm12_scale4,
  32   fixup_aarch64_ldst_imm12_scale8,
  33   fixup_aarch64_ldst_imm12_scale16,
  34
  35   // The high 19 bits of a 21-bit pc-relative immediate. Same encoding as
  36   // fixup_aarch64_pcrel_adrhi, except this is used by pc-relative loads and
  37   // generates relocations directly when necessary.
  38   fixup_aarch64_ldr_pcrel_imm19,
  39
  40   // FIXME: comment
  41   fixup_aarch64_movw,
  42
  43   // The high 9 bits of a 11-bit pc-relative immediate.
  44   fixup_aarch64_pcrel_branch9,
  45
  46   // The high 14 bits of a 21-bit pc-relative immediate.
  47   fixup_aarch64_pcrel_branch14,
  48
  49   // The high 16 bits of a 18-bit unsigned PC-relative immediate. Used by
  50   // pointer authentication, only within a function, so no relocation can be
  51   // generated.
  52   fixup_aarch64_pcrel_branch16,
  53
  54   // The high 19 bits of a 21-bit pc-relative immediate. Same encoding as
  55   // fixup_aarch64_pcrel_adrhi, except this is use by b.cc and generates
  56   // relocations directly when necessary.
  57   fixup_aarch64_pcrel_branch19,
  58
  59   // The high 26 bits of a 28-bit pc-relative immediate.
  60   fixup_aarch64_pcrel_branch26,
  61
  62   // The high 26 bits of a 28-bit pc-relative immediate. Distinguished from
  63   // branch26 only on ELF.
  64   fixup_aarch64_pcrel_call26,
  65
  66   // Marker
  67   LastTargetFixupKind,
  68   NumTargetFixupKinds = LastTargetFixupKind - FirstTargetFixupKind
  69 };
  70
  71 } // end namespace AArch64
  72 } // end namespace llvm
  73
  74 #endif