tools/objtool/arch.h

   1 /* SPDX-License-Identifier: GPL-2.0-or-later */
   2 /*
   3  * Copyright (C) 2015 Josh Poimboeuf <jpoimboe@redhat.com>
   4  */
   5
   6 #ifndef _ARCH_H
   7 #define _ARCH_H
   8
   9 #include <stdbool.h>
  10 #include <linux/list.h>
  11 #include "objtool.h"
  12 #include "cfi.h"
  13
  14 #include <asm/orc_types.h>
  15
  16 enum insn_type {
  17         INSN_JUMP_CONDITIONAL,
  18         INSN_JUMP_UNCONDITIONAL,
  19         INSN_JUMP_DYNAMIC,
  20         INSN_JUMP_DYNAMIC_CONDITIONAL,
  21         INSN_CALL,
  22         INSN_CALL_DYNAMIC,
  23         INSN_RETURN,
  24         INSN_CONTEXT_SWITCH,
  25         INSN_BUG,
  26         INSN_NOP,
  27         INSN_STAC,
  28         INSN_CLAC,
  29         INSN_STD,
  30         INSN_CLD,
  31         INSN_OTHER,
  32 };
  33
  34 enum op_dest_type {
  35         OP_DEST_REG,
  36         OP_DEST_REG_INDIRECT,
  37         OP_DEST_MEM,
  38         OP_DEST_PUSH,
  39         OP_DEST_PUSHF,
  40         OP_DEST_LEAVE,
  41 };
  42
  43 struct op_dest {
  44         enum op_dest_type type;
  45         unsigned char reg;
  46         int offset;
  47 };
  48
  49 enum op_src_type {
  50         OP_SRC_REG,
  51         OP_SRC_REG_INDIRECT,
  52         OP_SRC_CONST,
  53         OP_SRC_POP,
  54         OP_SRC_POPF,
  55         OP_SRC_ADD,
  56         OP_SRC_AND,
  57 };
  58
  59 struct op_src {
  60         enum op_src_type type;
  61         unsigned char reg;
  62         int offset;
  63 };
  64
  65 struct stack_op {
  66         struct op_dest dest;
  67         struct op_src src;
  68         struct list_head list;
  69 };
  70
  71 struct instruction;
  72
  73 void arch_initial_func_cfi_state(struct cfi_init_state *state);
  74
  75 int arch_decode_instruction(const struct elf *elf, const struct section *sec,
  76                             unsigned long offset, unsigned int maxlen,
  77                             unsigned int *len, enum insn_type *type,
  78                             unsigned long *immediate,
  79                             struct list_head *ops_list);
  80
  81 bool arch_callee_saved_reg(unsigned char reg);
  82
  83 unsigned long arch_jump_destination(struct instruction *insn);
  84
  85 unsigned long arch_dest_rela_offset(int addend);
  86
  87 #endif /* _ARCH_H */