root/tools/objtool/arch.h

INCLUDED FROM

   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 "elf.h"
  12 #include "cfi.h"
  13 
  14 enum insn_type {
  15         INSN_JUMP_CONDITIONAL,
  16         INSN_JUMP_UNCONDITIONAL,
  17         INSN_JUMP_DYNAMIC,
  18         INSN_JUMP_DYNAMIC_CONDITIONAL,
  19         INSN_CALL,
  20         INSN_CALL_DYNAMIC,
  21         INSN_RETURN,
  22         INSN_CONTEXT_SWITCH,
  23         INSN_STACK,
  24         INSN_BUG,
  25         INSN_NOP,
  26         INSN_STAC,
  27         INSN_CLAC,
  28         INSN_STD,
  29         INSN_CLD,
  30         INSN_OTHER,
  31 };
  32 
  33 enum op_dest_type {
  34         OP_DEST_REG,
  35         OP_DEST_REG_INDIRECT,
  36         OP_DEST_MEM,
  37         OP_DEST_PUSH,
  38         OP_DEST_PUSHF,
  39         OP_DEST_LEAVE,
  40 };
  41 
  42 struct op_dest {
  43         enum op_dest_type type;
  44         unsigned char reg;
  45         int offset;
  46 };
  47 
  48 enum op_src_type {
  49         OP_SRC_REG,
  50         OP_SRC_REG_INDIRECT,
  51         OP_SRC_CONST,
  52         OP_SRC_POP,
  53         OP_SRC_POPF,
  54         OP_SRC_ADD,
  55         OP_SRC_AND,
  56 };
  57 
  58 struct op_src {
  59         enum op_src_type type;
  60         unsigned char reg;
  61         int offset;
  62 };
  63 
  64 struct stack_op {
  65         struct op_dest dest;
  66         struct op_src src;
  67 };
  68 
  69 void arch_initial_func_cfi_state(struct cfi_state *state);
  70 
  71 int arch_decode_instruction(struct elf *elf, struct section *sec,
  72                             unsigned long offset, unsigned int maxlen,
  73                             unsigned int *len, enum insn_type *type,
  74                             unsigned long *immediate, struct stack_op *op);
  75 
  76 bool arch_callee_saved_reg(unsigned char reg);
  77 
  78 #endif /* _ARCH_H */