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 <arch/cfi_regs.h> 10 #include <linux/list.h> 11 12 #define CFI_UNDEFINED -1 13 #define CFI_CFA -2 14 #define CFI_SP_INDIRECT -3 15 #define CFI_BP_INDIRECT -4 16 17 struct cfi_reg { 18 int base; 19 int offset; 20 }; 21 22 struct cfi_init_state { 23 struct cfi_reg regs[CFI_NUM_REGS]; 24 struct cfi_reg cfa; 25 }; 26 27 struct cfi_state { 28 struct hlist_node hash; /* must be first, cficmp() */ 29 struct cfi_reg regs[CFI_NUM_REGS]; 30 struct cfi_reg vals[CFI_NUM_REGS]; 31 struct cfi_reg cfa; 32 int stack_size; 33 int drap_reg, drap_offset; 34 unsigned char type; 35 bool bp_scratch; 36 bool drap; 37 bool end; 38 }; 39 40 #endif /* _OBJTOOL_CFI_H */ 41