tools/objtool/cfi.h

   1 /* SPDX-License-Identifier: GPL-2.0-or-later */
   2 /*
   3  * Copyright (C) 2015-2017 Josh Poimboeuf <jpoimboe@redhat.com>
   4  */
   5
   6 #ifndef _OBJTOOL_CFI_H
   7 #define _OBJTOOL_CFI_H
   8
   9 #include "cfi_regs.h"
  10
  11 #define CFI_UNDEFINED           -1
  12 #define CFI_CFA                 -2
  13 #define CFI_SP_INDIRECT         -3
  14 #define CFI_BP_INDIRECT         -4
  15
  16 struct cfi_reg {
  17         int base;
  18         int offset;
  19 };
  20
  21 struct cfi_init_state {
  22         struct cfi_reg regs[CFI_NUM_REGS];
  23         struct cfi_reg cfa;
  24 };
  25
  26 struct cfi_state {
  27         struct cfi_reg regs[CFI_NUM_REGS];
  28         struct cfi_reg vals[CFI_NUM_REGS];
  29         struct cfi_reg cfa;
  30         int stack_size;
  31         int drap_reg, drap_offset;
  32         unsigned char type;
  33         bool bp_scratch;
  34         bool drap;
  35         bool end;
  36 };
  37
  38 #endif /* _OBJTOOL_CFI_H */