tools/objtool/cfi.h

   1 /*
   2  * Copyright (C) 2015-2017 Josh Poimboeuf <jpoimboe@redhat.com>
   3  *
   4  * This program is free software; you can redistribute it and/or
   5  * modify it under the terms of the GNU General Public License
   6  * as published by the Free Software Foundation; either version 2
   7  * of the License, or (at your option) any later version.
   8  *
   9  * This program is distributed in the hope that it will be useful,
  10  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  11  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  12  * GNU General Public License for more details.
  13  *
  14  * You should have received a copy of the GNU General Public License
  15  * along with this program; if not, see <http://www.gnu.org/licenses/>.
  16  */
  17
  18 #ifndef _OBJTOOL_CFI_H
  19 #define _OBJTOOL_CFI_H
  20
  21 #define CFI_UNDEFINED           -1
  22 #define CFI_CFA                 -2
  23 #define CFI_SP_INDIRECT         -3
  24 #define CFI_BP_INDIRECT         -4
  25
  26 #define CFI_AX                  0
  27 #define CFI_DX                  1
  28 #define CFI_CX                  2
  29 #define CFI_BX                  3
  30 #define CFI_SI                  4
  31 #define CFI_DI                  5
  32 #define CFI_BP                  6
  33 #define CFI_SP                  7
  34 #define CFI_R8                  8
  35 #define CFI_R9                  9
  36 #define CFI_R10                 10
  37 #define CFI_R11                 11
  38 #define CFI_R12                 12
  39 #define CFI_R13                 13
  40 #define CFI_R14                 14
  41 #define CFI_R15                 15
  42 #define CFI_RA                  16
  43 #define CFI_NUM_REGS            17
  44
  45 struct cfi_reg {
  46         int base;
  47         int offset;
  48 };
  49
  50 struct cfi_state {
  51         struct cfi_reg cfa;
  52         struct cfi_reg regs[CFI_NUM_REGS];
  53 };
  54
  55 #endif /* _OBJTOOL_CFI_H */