1 /* 2 * Copyright (C) 2015 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 _ARCH_H 19 #define _ARCH_H 20 21 #include <stdbool.h> 22 #include <linux/list.h> 23 #include "elf.h" 24 #include "cfi.h" 25 26 #define INSN_JUMP_CONDITIONAL 1 27 #define INSN_JUMP_UNCONDITIONAL 2 28 #define INSN_JUMP_DYNAMIC 3 29 #define INSN_CALL 4 30 #define INSN_CALL_DYNAMIC 5 31 #define INSN_RETURN 6 32 #define INSN_CONTEXT_SWITCH 7 33 #define INSN_STACK 8 34 #define INSN_BUG 9 35 #define INSN_NOP 10 36 #define INSN_OTHER 11 37 #define INSN_LAST INSN_OTHER 38 39 enum op_dest_type { 40 OP_DEST_REG, 41 OP_DEST_REG_INDIRECT, 42 OP_DEST_MEM, 43 OP_DEST_PUSH, 44 OP_DEST_LEAVE, 45 }; 46 47 struct op_dest { 48 enum op_dest_type type; 49 unsigned char reg; 50 int offset; 51 }; 52 53 enum op_src_type { 54 OP_SRC_REG, 55 OP_SRC_REG_INDIRECT, 56 OP_SRC_CONST, 57 OP_SRC_POP, 58 OP_SRC_ADD, 59 OP_SRC_AND, 60 }; 61 62 struct op_src { 63 enum op_src_type type; 64 unsigned char reg; 65 int offset; 66 }; 67 68 struct stack_op { 69 struct op_dest dest; 70 struct op_src src; 71 }; 72 73 void arch_initial_func_cfi_state(struct cfi_state *state); 74 75 int arch_decode_instruction(struct elf *elf, struct section *sec, 76 unsigned long offset, unsigned int maxlen, 77 unsigned int *len, unsigned char *type, 78 unsigned long *immediate, struct stack_op *op); 79 80 bool arch_callee_saved_reg(unsigned char reg); 81 82 #endif /* _ARCH_H */ 83